WO2021218290A1

WO2021218290A1 - Gas density relay with online self-checking function, and checking method therefor

Info

Publication number: WO2021218290A1
Application number: PCT/CN2021/076136
Authority: WO
Inventors: 陈进; 黄小泵; 常敏; 金海勇; 夏铁新
Original assignee: 上海乐研电气有限公司
Priority date: 2020-04-29
Filing date: 2021-02-09
Publication date: 2021-11-04
Also published as: CN111446112A

Abstract

Provided are a gas density relay with an online self-checking function, and a checking method therefor. The gas density relay comprises a gas density relay body, a first pressure sensor, a third pressure sensor, a temperature sensor, a pressure regulation mechanism, an online checking contact signal sampling unit and an intelligent control unit. The gas density relay body comprises: a shell; a first sealed gas chamber, which is in communication with an insulating gas chamber of an electrical device, and a second sealed gas chamber, which is filled with a standard compensation gas, the sealed gas chambers being located inside the shell; and a third gas chamber, which is provided with a signal generator and a signal regulation mechanism, wherein the first pressure sensor is in communication with the first sealed gas chamber, and the third pressure sensor is in communication with a third sealed gas chamber; and the intelligent control unit regulates the rise and fall of the pressure in the third sealed gas chamber by controlling the pressure regulation mechanism, so that the gas density relay body produces a contact action to complete checking work of the gas density relay without the need for a maintenance staff member to perform checking on-site, thereby improving the working efficiency and reducing the sealing requirements of a power grid.

Description

一种具有在线自校验功能的气体密度继电器及其校验方法Gas density relay with online self-checking function and checking method thereof

本申请请求 2020年 04月 29日申请的申请号为 202010354521.2(发明名称：一种具有在线自校验功能的气体密度继电器及其校验方法)的中国专利申请的优先权。 Priority of Chinese Patent Application: This application claims the application 29 April 2020 Application No. 202010354521.2 (A gas density relay Verification and calibration method having the function of Title).

技术领域Technical field

本发明涉及电力技术领域，具体涉及一种应用在高压、中压电气设备上，具有在线自校验功能的气体密度继电器及其校验方法。The invention relates to the field of electric power technology, in particular to a gas density relay with online self-checking function applied to high-voltage and medium-voltage electrical equipment and a checking method thereof.

背景技术Background technique

随着无人值守变电站向网络化、数字化方向发展以及对遥控、遥测的要求不断加强，SF6电气设备的气体密度和微水含量状态的在线监测具有重要的现实意义。随着中国智能电网的不断发展，智能高压电气设备作为智能变电站的重要组成部分和关键节点，对智能电网的安全起着举足轻重的作用。高压电气设备目前大多为SF6气体绝缘设备，如果气体密度降低(如泄漏等引起)将严重影响设备的电气性能，对安全运行造成严重隐患。目前在线监测SF6高压电气设备中的气体密度值已经非常普遍了，为此气体密度监测***(气体密度继电器)应用将蓬勃发展。而目前的气体密度监测***(气体密度继电器)基本上是：1)应用远传式SF6气体密度继电器实现密度、压力和温度的采集，上传，实现气体密度在线监测；2)应用气体密度变送器实现密度、压力和温度的采集，上传，实现气体密度在线监测。SF6气体密度继电器是核心和关键部件。With the development of unattended substations in the direction of networking and digitization, and the increasing requirements for remote control and remote measurement, the online monitoring of the gas density and moisture content of SF6 electrical equipment has important practical significance. With the continuous development of China's smart grid, smart high-voltage electrical equipment, as an important part and key node of smart substations, plays a decisive role in the security of smart grids. High-voltage electrical equipment is currently mostly SF6 gas insulated equipment. If the gas density is reduced (caused by leakage, etc.), it will seriously affect the electrical performance of the equipment and cause serious hidden dangers to safe operation. At present, online monitoring of gas density values in SF6 high-voltage electrical equipment has become very common. For this reason, the application of gas density monitoring systems (gas density relays) will flourish. The current gas density monitoring system (gas density relay) is basically: 1) Use remote SF6 gas density relay to collect and upload density, pressure and temperature to realize online gas density monitoring; 2) Use gas density transmission The device realizes the collection and uploading of density, pressure and temperature, and realizes online monitoring of gas density. SF6 gas density relay is the core and key component.

对电气设备上的气体密度继电器进行定期检验，是防患于未然，保障电气设备安全可靠运行的必要措施。《电力预防性试验规程》和《防止电力生产重大事故的二十五项重点要求》都要求要定期地对气体密度继电器进行校验。从实际运行情况来看，对气体密度继电器进行定期校验是保障电力设备安全、可靠运行的必要手段之一。因此，目前气体密度继电器的校验在电力***已经非常重视和普及，各供电公司、发电厂、大型厂矿企业都已经实施。而供电公司、发电厂、大型厂矿企业为完成气体密度继电器的现场校验检测工作需配备测试人员、设备车辆和高价值的SF6气体。包括检测时的停电营业损失在内，粗略计算，每个高压开关站的每年分摊的检测费用约在数万到几十万元左右。另外，检测人员现场校验如果不规范操作，还存在安全隐患。为此，非常必要在现有的气体密度自校验气体密度继电器，尤其是气体密度在线自校验气体密度继电器或***中进行创新，使实现气体密度在线监测的气体密度继电器或组成的监测***中还具有气体密度继电器的校验功能，进而完成(机械式)气体密度继电器的定期校验工作，无须检修人员到现场，以提高工作效率，降低运行维护成本。Regular inspection of gas density relays on electrical equipment is a necessary measure to prevent problems before they occur and ensure the safe and reliable operation of electrical equipment. Both the "Electric Power Preventive Test Regulations" and the "Twenty-Five Key Requirements for Preventing Major Accidents in Electric Power Production" require periodic calibration of gas density relays. Judging from the actual operating conditions, regular calibration of gas density relays is one of the necessary means to ensure the safe and reliable operation of power equipment. Therefore, the current calibration of gas density relays has been attached great importance to and popularized in the power system, and various power supply companies, power plants, and large factories and mines have all implemented it. Power supply companies, power plants, and large factories and mines need to be equipped with testers, equipment vehicles and high-value SF6 gas to complete the on-site verification and testing of gas density relays. Including the loss of power outages during the inspection, a rough calculation shows that the annual inspection costs of each high-voltage switch station are about tens of thousands to hundreds of thousands of yuan. In addition, if the inspectors do not perform the on-site verification, there are still potential safety hazards. For this reason, it is very necessary to innovate in the existing gas density self-calibration gas density relay, especially the gas density online self-calibration gas density relay or system, so that the gas density relay or the monitoring system composed of the online gas density monitoring can be realized. It also has the calibration function of the gas density relay, and then completes the regular calibration work of the (mechanical) gas density relay, without the need for maintenance personnel to go to the site, so as to improve work efficiency and reduce operation and maintenance costs.

发明内容Summary of the invention

本发明的目的在于提供一种具有在线自校验功能的气体密度继电器(或气体密度监测装置)及其校验方法，以解决上述技术背景中提出的问题。The purpose of the present invention is to provide a gas density relay (or gas density monitoring device) with an online self-checking function and a checking method thereof, so as to solve the problems raised in the above technical background.

为实现上述目的，本发明采用以下技术方案：In order to achieve the above objectives, the present invention adopts the following technical solutions:

本申请第一个方面提供了一种具有在线自校验功能的气体密度继电器(或气体密度监测装置)，包括：气体密度继电器本体、第一压力传感器、第三压力传感器、温度传感器、压力调节机构、在线校验接点信号采样单元和智控单元；The first aspect of this application provides a gas density relay (or gas density monitoring device) with an online self-checking function, including: a gas density relay body, a first pressure sensor, a third pressure sensor, a temperature sensor, and a pressure regulator Mechanism, online verification contact signal sampling unit and intelligent control unit;

所述气体密度继电器本体包括：外壳，以及外壳内与电气设备的绝缘气室连通的第一密封气室、充有标准补偿气体的第二密封气室，以及设有信号发生器和信号调节机构的第三气室；The gas density relay body includes: a shell, a first sealed gas chamber in the shell communicating with an insulating gas chamber of an electrical device, a second sealed gas chamber filled with a standard compensation gas, and a signal generator and a signal adjustment mechanism The third air chamber;

所述第一压力传感器与所述第一密封气室相连通；The first pressure sensor communicates with the first sealed air chamber;

所述第三压力传感器，与所述气体密度继电器本体的第三密封气室相连通；The third pressure sensor communicates with the third sealed gas chamber of the gas density relay body;

所述压力调节机构，设置在所述气体密度继电器本体外，所述压力调节机构的气路与所述第三密封气室相连通，被配置为调节所述第三密封气室的气体压力升降，使所述气体密度继电器本体发生接点信号动作；The pressure adjustment mechanism is arranged outside the body of the gas density relay, and the gas path of the pressure adjustment mechanism communicates with the third sealed gas chamber and is configured to adjust the gas pressure rise and fall of the third sealed gas chamber , To cause the gas density relay body to generate a contact signal action;

所述在线校验接点信号采样单元，与所述气体密度继电器本体的信号发生器相连接，被配置为采样所述气体密度继电器本体发生接点信号动作的接点信号；The online verification contact signal sampling unit is connected to the signal generator of the gas density relay body, and is configured to sample the contact signal of the gas density relay body that generates a contact signal action;

所述智控单元，分别与所述压力调节机构、第一压力传感器、第三压力传感器、温度传感器和在线校验接点信号采样单元相连接，被配置为完成所述压力调节机构的控制，压力值采集和温度值采集、和/或气体密度值采集，以及检测所述气体密度继电器本体的接点信号动作值和/或接点信号返回值；The intelligent control unit is respectively connected with the pressure adjustment mechanism, the first pressure sensor, the third pressure sensor, the temperature sensor and the online verification contact signal sampling unit, and is configured to complete the control of the pressure adjustment mechanism. Value collection and temperature value collection, and/or gas density value collection, and detection of the contact signal action value and/or contact signal return value of the gas density relay body;

其中，所述接点信号包括报警、和/或闭锁。Wherein, the contact signal includes alarm and/or lockout.

上述具有在线自校验功能的气体密度继电器指的是其组成元件设计成一体结构；而具有在线自校验功能的气体密度监测装置指的是其组成元件设计成分体结构，灵活组成。The above-mentioned gas density relay with on-line self-checking function refers to the design of its constituent elements into an integrated structure; while the gas density monitoring device with on-line self-checking function refers to the design of its constituent elements into a body structure and flexible composition.

优选地，所述气体密度继电器本体包括：外壳、第一波纹管、第二波纹管、信号发生器、信号调节机构；其中，所述第一波纹管的第一开口端固定在所述外壳的内壁上，所述第一波纹管的第二开口端与第一密封件密封连接，所述第一波纹管的内壁、所述第一密封件、所述外壳的内壁共同围成所述第一密封气室，所述第一密封气室设有与电气设备的绝缘气体相连通的接口；所述第二波纹管的第一开口端与所述第一密封件密封连接，所述第二波纹管的第二开口端口通过第二密封件与所述外壳的内壁连接，所述第一波纹管的外壁、所述第一密封件、所述第二波纹管的外壁、所述第二密封件及所述外壳的内壁共同围成所述第二密封气室；所述第二波纹管的内壁、所述第二密封件及所述外壳的内壁共同围成第三密封气室，所述信号发生器和信号调节机构设置在所述第三密封气室内，所述信号调节机构与所述第一密封件连接，所述信号发生器对应所述信号调节机构设置。Preferably, the gas density relay body includes: a housing, a first bellows, a second bellows, a signal generator, and a signal adjustment mechanism; wherein the first open end of the first bellows is fixed to the housing On the inner wall, the second open end of the first bellows is in hermetically connected with the first seal, and the inner wall of the first bellows, the first seal, and the inner wall of the shell jointly enclose the first A sealed gas chamber, the first sealed gas chamber is provided with an interface communicating with the insulating gas of the electrical equipment; the first open end of the second bellows is in hermetically connected with the first sealing member, and the second bellows The second opening port of the tube is connected to the inner wall of the housing through a second sealing element, the outer wall of the first bellows, the first sealing element, the outer wall of the second bellows, and the second sealing element And the inner wall of the outer shell jointly enclose the second sealed air chamber; the inner wall of the second bellows, the second sealing member and the inner wall of the outer shell jointly enclose a third sealed air chamber, the signal A generator and a signal adjustment mechanism are arranged in the third sealed gas chamber, the signal adjustment mechanism is connected with the first seal, and the signal generator is arranged corresponding to the signal adjustment mechanism.

上述的第一密封气室和第二密封气室的位置可以互换；例如，所述第一波纹管的内壁、所述第一密封件、所述外壳的内壁共同围成所述第二密封气室；所述第一波纹管的外壁、所述第一密封件、所述第二波纹管的外壁、所述第二密封件及所述外壳的内壁共同围成所述第一密封气室，所述第一密封气室设有与电气设备的绝缘气体相连通的接口。The positions of the above-mentioned first sealed air chamber and the second sealed air chamber can be interchanged; for example, the inner wall of the first bellows, the first sealing member, and the inner wall of the housing jointly enclose the second seal Air chamber; the outer wall of the first bellows, the first sealing member, the outer wall of the second bellows, the second sealing member and the inner wall of the housing together enclose the first sealed air chamber , The first sealed gas chamber is provided with an interface communicating with the insulating gas of the electrical equipment.

更优选地，所述第一波纹管的外径大于所述第二波纹管的外径。More preferably, the outer diameter of the first bellows is greater than the outer diameter of the second bellows.

更优选地，所述信号调节机构包括一移动杆，所述移动杆的一端伸入所述第二波纹管内，与所述第一密封件连接，并随第一波纹管的形变产生位移；所述移动杆的另一端伸出所述第二波纹管，固定连接一横杆，所述横杆设有调节螺钉，所述调节螺钉用于在移动杆的推动力下触动所述信号发生器。More preferably, the signal adjustment mechanism includes a moving rod, one end of the moving rod extends into the second corrugated tube, is connected to the first sealing member, and is displaced with the deformation of the first corrugated tube; The other end of the moving rod extends out of the second corrugated tube, and is fixedly connected to a cross rod, the cross rod is provided with an adjusting screw, and the adjusting screw is used to activate the signal generator under the pushing force of the moving rod.

优选地，所述第三压力传感器设置在所述第三密封气室内；或者，所述第三压力传感器设置在所述第三密封气室上，与所述第三密封气室的气路相连通。Preferably, the third pressure sensor is arranged in the third sealed gas chamber; or, the third pressure sensor is arranged on the third sealed gas chamber and is connected to the gas path of the third sealed gas chamber Pass.

优选地，所述信号发生器包括微动开关或磁助式电接点，所述气体密度继电器本体通过所述信号发生器输出接点信号。Preferably, the signal generator includes a micro switch or a magnetic-assisted electric contact, and the gas density relay body outputs a contact signal through the signal generator.

优选地，所述气体密度继电器(或气体密度检测装置)，还包括第二压力传感器，所述第二压力传感器与充有标准补偿气体的第二密封气室相连通。Preferably, the gas density relay (or gas density detection device) further includes a second pressure sensor, and the second pressure sensor communicates with a second sealed gas chamber filled with a standard compensation gas.

优选地，所述智控单元获取所述第一压力传感器、温度传感器采集的气体密度值；或者，所述智控单元获取所述第一压力传感器采集的压力值和温度传感器采集的温度值，完成所述气体密度继电器对所监测的电气设备的气体密度的在线监测。Preferably, the intelligent control unit obtains the gas density value collected by the first pressure sensor and the temperature sensor; or, the intelligent control unit obtains the pressure value collected by the first pressure sensor and the temperature value collected by the temperature sensor, The on-line monitoring of the gas density of the monitored electrical equipment by the gas density relay is completed.

优选地，所述气体密度继电器(或气体密度监测装置)还包括阀，所述阀的一端设有与大气相连通的连接口，所述阀的另一端与所述压力调节机构或所述第三密封气室相连通。Preferably, the gas density relay (or gas density monitoring device) further includes a valve, one end of the valve is provided with a connection port communicating with the atmosphere, and the other end of the valve is connected to the pressure regulating mechanism or the The three sealed air chambers are connected.

更优选地，所述阀还与所述智控单元相连接，在所述智控单元的控制下关闭或开启。More preferably, the valve is also connected to the intelligent control unit, and is closed or opened under the control of the intelligent control unit.

更优选地，所述阀为电动阀、和/或电磁阀，或为压电阀，或为温度控制的阀，或为采用智能记忆材料制作的、采用电加热开启或关闭的新型阀。More preferably, the valve is an electric valve, and/or a solenoid valve, or a piezoelectric valve, or a temperature-controlled valve, or a new type valve made of smart memory material that is opened or closed by electric heating.

更优选地，校验时，所述阀为开启状态；非校验时，所述阀为关闭状态。More preferably, during verification, the valve is in an open state; during non-verification, the valve is in a closed state.

优选地，所述压力调节机构密封在一个腔体或壳体内。Preferably, the pressure adjusting mechanism is sealed in a cavity or housing.

优选地，所述压力调节机构为一密闭气室，所述密闭气室的外部或内部设有加热元件、和/或制冷元件，通过所述加热元件加热、和/或通过所述制冷元件制冷，导致所述密闭气室内的气体的温度变化，进而完成所述第三密封气室的压力升降；或者，Preferably, the pressure adjusting mechanism is a closed air chamber, and a heating element and/or a cooling element are arranged outside or inside the closed air chamber, and the heating element is used for heating and/or the cooling element is used for cooling. , Causing the temperature of the gas in the airtight chamber to change, thereby completing the pressure rise and fall of the third airtight chamber; or,

所述压力调节机构为一端开口的腔体，所述腔体的另一端连通所述第三密封气室；所述腔体内有活塞，所述活塞的一端连接有一个调节杆，所述调节杆的外端连接驱动部件，所述活塞的另一端伸入所述开口内，且与所述腔体的内壁密封接触，所述驱动部件驱动所述调节杆进而带动所述活塞在所述腔体内移动；或者，The pressure adjusting mechanism is a cavity with one end open, and the other end of the cavity is connected to the third sealed air chamber; there is a piston in the cavity, and one end of the piston is connected with an adjusting rod, the adjusting rod The outer end of the piston is connected to a driving part, and the other end of the piston extends into the opening and is in sealing contact with the inner wall of the cavity. The driving part drives the adjusting rod to drive the piston in the cavity Move; or,

所述压力调节机构为一密闭气室，所述密闭气室的内部设有活塞，所述活塞与所述密闭气室的内壁密封接触，所述密闭气室的外面设有驱动部件，所述驱动部件通过电磁力推动所述活塞在所述腔体内移动；或者，The pressure adjustment mechanism is a closed air chamber, the inside of the closed air chamber is provided with a piston, the piston is in sealing contact with the inner wall of the closed air chamber, and the outside of the closed air chamber is provided with a driving part, the The driving component pushes the piston to move in the cavity by electromagnetic force; or,

所述压力调节机构为一端连接驱动部件的气囊，所述气囊在所述驱动部件的驱动下发生体积变化，所述气囊连通所述第三密封气室；或者，The pressure adjusting mechanism is an airbag with one end connected to a driving member, the airbag changes in volume under the driving of the driving member, and the airbag communicates with the third sealed air chamber; or,

所述压力调节机构为波纹管，所述波纹管的一端连通所述第三密封气室，所述波纹管的另一端在驱动部件的驱动下伸缩；或者，The pressure adjusting mechanism is a bellows, one end of the bellows is connected to the third sealed air chamber, and the other end of the bellows is expanded and contracted under the drive of a driving component; or,

所述压力调节机构为一放气阀，所述放气阀为电磁阀或电动阀，或通过电的或气的方式实现的放气阀；或者，The pressure regulating mechanism is a purge valve, and the purge valve is a solenoid valve or an electric valve, or a purge valve realized by electric or pneumatic means; or,

所述压力调节机构为一压缩机；或者，The pressure regulating mechanism is a compressor; or,

所述压力调节机构为一泵，所述泵包括造压泵、增压泵、电动气泵、电磁气泵中的一种；或者，The pressure adjusting mechanism is a pump, and the pump includes one of a pressure generating pump, a boosting pump, an electric air pump, and an electromagnetic air pump; or,

所述压力调节机构为增压阀；The pressure regulating mechanism is a booster valve;

其中，所述驱动部件包括磁力驱动机构、电机、往复运动机构、卡诺循环机构、磁耦合推力机构、加热产生推力机构、电加热产生推力机构、化学反应产生推力机构、气动元件中的一种。Wherein, the driving component includes one of a magnetic drive mechanism, a motor, a reciprocating motion mechanism, a Carnot cycle mechanism, a magnetic coupling thrust mechanism, a heating generating thrust mechanism, an electric heating generating thrust mechanism, a chemical reaction generating thrust mechanism, and a pneumatic element. .

更优选地，所述压力调节机构为一密闭气室时，所述压力调节机构还包括保温件，所述保温件设于所述密闭气室的外面。More preferably, when the pressure adjusting mechanism is a closed air chamber, the pressure adjusting mechanism further includes a heat insulating member, and the heat insulating member is provided outside the closed air chamber.

优选地，所述气体密度继电器本体、所述第一压力传感器为一体化结构；优选地，所述气体密度继电器本体、所述第一压力传感器、温度传感器为一体化结构的远传式气体密度继电器。Preferably, the gas density relay body and the first pressure sensor are integrated structures; preferably, the gas density relay body, the first pressure sensor, and the temperature sensor are remote gas density integrated structures. Relay.

优选地，所述第一压力传感器、温度传感器为一体化结构；或者，所述第一压力传感器、温度传感器为一体化结构的气体密度变送器；或者，所述第一压力传感器和温度传感器组成石英音叉技术的密度检测传感器；优选地，所述在线校验接点信号采样单元、所述智控单元设置在所述气体密度变送器上。Preferably, the first pressure sensor and the temperature sensor are an integrated structure; or the first pressure sensor and the temperature sensor are a gas density transmitter with an integrated structure; or the first pressure sensor and the temperature sensor A density detection sensor composed of quartz tuning fork technology; preferably, the online verification contact signal sampling unit and the intelligent control unit are arranged on the gas density transmitter.

优选地，所述在线校验接点信号采样单元和所述智控单元设置在一起；优选地，所述在线校验接点信号采样单元和所述智控单元密封在一个腔体或壳体内。Preferably, the online verification contact signal sampling unit and the intelligent control unit are arranged together; preferably, the online verification contact signal sampling unit and the intelligent control unit are sealed in a cavity or housing.

优选地，所述第一压力传感器包括至少一个压力传感器；或者，所述第一压力传感器采用由压力传感器和温度传感器组成的气体密度变送器；或者，所述第一压力传感器采用石英音叉技术的密度检测传感器。Preferably, the first pressure sensor includes at least one pressure sensor; or, the first pressure sensor adopts a gas density transmitter composed of a pressure sensor and a temperature sensor; or, the first pressure sensor adopts quartz tuning fork technology The density detection sensor.

优选地，所述第一压力传感器安装于所述气体密度继电器本体的气路上；所述温度传感器安装于所述气体密度继电器本体的气路上或气路外，或安装于所述气体密度继电器本体内，或安装于所述气体密度继电器本体外。Preferably, the first pressure sensor is installed on the gas path of the gas density relay body; the temperature sensor is installed on or outside the gas path of the gas density relay body, or is installed on the gas density relay body Inside, or installed outside the body of the gas density relay.

优选地，所述气体密度继电器本体带有比对密度值输出信号，该比对密度值输出信号与所述智控单元相连接；或者，所述气体密度继电器本体带有比对压力值输出信号，该比对压力值输出信号与所述智控单元相连接。Preferably, the gas density relay body has a comparison density value output signal, and the comparison density value output signal is connected to the intelligent control unit; or, the gas density relay body has a comparison pressure value output signal , The output signal of the comparison pressure value is connected with the intelligent control unit.

优选地，所述在线校验接点信号采样单元包括隔离采样元件，所述隔离采样元件由气体密度继电器本体、或压力调节机构、或智控单元控制；在非校验状态时，所述在线校验接点信号采样单元与气体密度继电器本体的接点信号在电路上相对隔离；在校验状态时，所述在线校验接点信号采样单元切断气体密度继电器本体的接点信号控制回路，将所述气体密度继电器本体的接点与所述智控单元相连接；其中，隔离采样元件包括行程开关、微动开关、按钮、电动开关、位移开关、电磁继电器、光耦、可控硅中的一种。Preferably, the online verification contact signal sampling unit includes an isolated sampling element, and the isolated sampling element is controlled by a gas density relay body, or a pressure adjustment mechanism, or an intelligent control unit; in the non-verification state, the online calibration The contact signal sampling unit of the inspection contact signal and the contact signal of the gas density relay body are relatively isolated on the circuit; in the verification state, the online inspection contact signal sampling unit cuts off the contact signal control circuit of the gas density relay body, and the gas density The contact of the relay body is connected with the intelligent control unit; wherein, the isolation sampling element includes one of a travel switch, a micro switch, a button, an electric switch, a displacement switch, an electromagnetic relay, an optocoupler, and a thyristor.

优选地，所述在线校验接点信号采样单元对所述气体密度继电器本体的接点信号采样满足：所述在线校验接点信号采样单元具有独立的至少两组采样接点，可同时对至少两个接点自动完成校验，且连续测量、无须更换接点或重新选择接点；其中，所述接点包括、但不限于报警接点、报警接点+闭锁接点、报警接点+闭锁1接点+闭锁2接点、报警接点+闭锁接点+超压接点中的一种。Preferably, the online verification contact signal sampling unit for sampling the contact signal of the gas density relay body satisfies: the online verification contact signal sampling unit has at least two independent sets of sampling contacts, which can simultaneously perform sampling of at least two contacts. Automatically complete the calibration, and continuous measurement, no need to replace the contact or re-select the contact; among them, the contact includes, but not limited to alarm contact, alarm contact + lock contact, alarm contact + lock 1 contact + lock 2 contact, alarm contact + One of latching contacts + over-pressure contacts.

优选地，所述在线校验接点信号采样单元对所述气体密度继电器本体的接点信号动作值或其切换值的测试电压不低于24V，即在校验时，在接点信号相应端子之间施加不低于24V电压。Preferably, the test voltage of the on-line verification contact signal sampling unit for the contact signal action value or the switching value of the gas density relay body is not less than 24V, that is, during the verification, the test voltage is applied between the corresponding terminals of the contact signal No less than 24V voltage.

优选地，所述气体密度继电器(或气体密度监测装置)，还包括多通接头，所述气体密度继电器本体、所述第一压力传感器设置在所述多通接头上；或者，Preferably, the gas density relay (or gas density monitoring device) further includes a multi-way connector, and the gas density relay body and the first pressure sensor are arranged on the multi-way connector; or,

所述压力调节机构固定在所述多通接头上；或者，The pressure adjusting mechanism is fixed on the multi-way joint; or,

所述气体密度继电器本体、第一压力传感器、所述压力调节机构设置在所述多通接头上；或者，The gas density relay body, the first pressure sensor, and the pressure adjustment mechanism are arranged on the multi-way joint; or,

所述在线校验接点信号采样单元、智控单元、温度传感器设置在所述多通接头上。The online verification contact signal sampling unit, the intelligent control unit, and the temperature sensor are arranged on the multi-way connector.

优选地，所述气体密度继电器(或气体密度监测装置)，还包括分别与所述气体密度继电器本体和所述智控单元相连接的微水传感器，和/或分别与所述气体密度继电器本体和所述智控单元相连接的分解物传感器。Preferably, the gas density relay (or gas density monitoring device) further includes a micro water sensor connected to the gas density relay body and the intelligent control unit respectively, and/or respectively connected to the gas density relay body Decomposition sensor connected to the intelligent control unit.

优选地，至少两个气体密度继电器本体、至少两个第一压力传感器、至少两个第三压力传感器、至少两个压力调节机构、至少两个在线校验接点信号采样单元和一个智控单元、一个温度传感器，完成所述气体密度继电器的在线校验；或者，Preferably, at least two gas density relay bodies, at least two first pressure sensors, at least two third pressure sensors, at least two pressure adjustment mechanisms, at least two online verification contact signal sampling units and an intelligent control unit, A temperature sensor to complete the online verification of the gas density relay; or,

至少两个气体密度继电器本体、至少两个第一压力传感器、至少两个第三压力传感器、至少两个压力调节机构、至少两个温度传感器、至少两个在线校验接点信号采样单元和一个智控单元，完成所述气体密度继电器的在线校验。At least two gas density relay bodies, at least two first pressure sensors, at least two third pressure sensors, at least two pressure adjustment mechanisms, at least two temperature sensors, at least two online verification contact signal sampling units, and a smart The control unit completes the online verification of the gas density relay.

优选地，所述第一压力传感器或第三压力传感器可以是绝对压力传感器、相对压力传感器、或绝对压力传感器和相对压力传感器；可以是扩散硅压力传感器、MEMS压力传感器、芯片式压力传感器、线圈感应压力传感器(如巴登管附带感应线圈的压力传感器)、电阻压力传感器(如巴登管附带滑线电阻的压力传感器)；可以是模拟量压力传感器，也可以是数字量压力传感器。Preferably, the first pressure sensor or the third pressure sensor can be an absolute pressure sensor, a relative pressure sensor, or an absolute pressure sensor and a relative pressure sensor; it can be a diffused silicon pressure sensor, a MEMS pressure sensor, a chip pressure sensor, a coil Inductive pressure sensor (such as pressure sensor with induction coil attached to Baden tube), resistance pressure sensor (such as pressure sensor with sliding wire resistance attached to Baden tube); it can be an analog pressure sensor or a digital pressure sensor.

优选地，所述温度传感器可以是热电偶、热敏电阻、半导体式；可以接触式和非接触式；可以是热电阻和热电偶。Preferably, the temperature sensor may be a thermocouple, a thermistor, or a semiconductor type; it may be a contact type or a non-contact type; it may be a thermal resistance or a thermocouple.

优选地，所述电气设备包括SF6气体电气设备、SF6混合气体电气设备、环保型气体电气设备、或其它绝缘气体电气设备。Preferably, the electrical equipment includes SF6 gas electrical equipment, SF6 mixed gas electrical equipment, environmentally friendly gas electrical equipment, or other insulated gas electrical equipment.

具体地，所述电气设备包括GIS、GIL、PASS、断路器、电流互感器、电压互感器、变压器、充气柜、环网柜。Specifically, the electrical equipment includes GIS, GIL, PASS, circuit breakers, current transformers, voltage transformers, transformers, gas filling cabinets, and ring network cabinets.

优选地，所述智控单元基于微处理器的嵌入式***内嵌算法及控制程序，自动控制整个校验过程，包含所有外设、逻辑及输入输出。Preferably, the intelligent control unit is based on the embedded algorithm and control program of the embedded system of the microprocessor, and automatically controls the entire verification process, including all peripherals, logic, input and output.

更优选地，所述智控单元基于通用计算机、工控机、ARM芯片、AI芯片、CPU、MCU、FPGA、PLC等、工控主板、嵌入式主控板等内嵌算法及控制程序，自动控制整个校验过程，包含所有外设、逻辑及输入输出。More preferably, the intelligent control unit is based on general-purpose computers, industrial computers, ARM chips, AI chips, CPUs, MCUs, FPGAs, PLCs, etc., industrial control motherboards, embedded main control boards and other embedded algorithms and control programs to automatically control the entire The verification process includes all peripherals, logic, input and output.

优选地，所述智控单元具有电气接口，所述电气接口完成测试数据存储，和/或测试数据导出，和/或测试数据打印，和/或与上位机进行数据通讯，和/或输入模拟量、数字量信息。Preferably, the intelligent control unit has an electrical interface, and the electrical interface completes test data storage, and/or test data export, and/or test data printing, and/or data communication with an upper computer, and/or input simulation Quantity, digital quantity information.

优选地，所述气体密度继电器(或气体密度监测装置)支持基本信息输入，所述基本信息包括出厂编号、精度要求、额定参数、制造厂、运行位置中的一种或几种。Preferably, the gas density relay (or gas density monitoring device) supports the input of basic information, and the basic information includes one or more of the factory number, accuracy requirements, rated parameters, manufacturer, and operating position.

优选地，所述智控单元还包括实现远距离传输测试数据、和/或校验结果的通讯模块。Preferably, the intelligent control unit further includes a communication module that realizes long-distance transmission of test data and/or verification results.

更优选地，所述通讯模块的通讯方式为有线通讯或无线通讯方式。More preferably, the communication mode of the communication module is wired communication or wireless communication.

进一步地，所述有线通讯方式包括RS232总线、RS422总线、RS485总线、CAN-BUS总线、4-20mA、Hart、IIC、SPI、Wire、同轴电缆、PLC电力载波、电缆线中的一种或几种。Further, the wired communication method includes one of RS232 bus, RS422 bus, RS485 bus, CAN-BUS bus, 4-20mA, Hart, IIC, SPI, Wire, coaxial cable, PLC power carrier, cable or Several kinds.

进一步地，所述无线通讯方式包括NB-IOT、2G/3G/4G/5G、WIFI、蓝牙、Lora、Lorawan、Zigbee、红外、超声波、声波、卫星、光波、量子通信、声呐中的一种或几种。Further, the wireless communication method includes one of NB-IOT, 2G/3G/4G/5G, WIFI, Bluetooth, Lora, Lorawan, Zigbee, infrared, ultrasonic, acoustic wave, satellite, light wave, quantum communication, sonar, or Several kinds.

优选地，所述智控单元上还设有时钟，所述时钟被配置为用于定期设置所述气体密度继电器的校验时间，或者记录测试时间，或者记录事件时间。Preferably, the intelligent control unit is also provided with a clock, and the clock is configured to periodically set the calibration time of the gas density relay, or record the test time, or record the event time.

优选地，所述智控单元的控制通过现场控制，和/或通过后台控制。Preferably, the control of the intelligent control unit is through on-site control and/or through background control.

更优选地，所述气体密度继电器(或气体密度监测装置)根据所述后台的设置或指令，完成所述气体密度继电器的在线校验；或者，根据设置的所述气体密度继电器的校验时间，完成所述气体密度继电器的在线校验。More preferably, the gas density relay (or gas density monitoring device) completes the online verification of the gas density relay according to the settings or instructions of the background; or, according to the set verification time of the gas density relay , To complete the online verification of the gas density relay.

优选地，所述气体密度继电器(或气体密度监测装置)还包括：用于人机交互的显示界面，所述显示界面与所述智控单元相连接，实时显示当前的校验数据，和/或支持数据输入。Preferably, the gas density relay (or gas density monitoring device) further includes: a display interface for human-computer interaction, the display interface is connected to the intelligent control unit, and the current calibration data is displayed in real time, and/ Or support data input.

优选地，所述气体密度继电器(或气体密度监测装置)，还包括：用于监控的摄像头。Preferably, the gas density relay (or gas density monitoring device) further includes a camera for monitoring.

优选地，所述气体密度继电器(或气体密度监测装置)还包括接触电阻检测单元；所述接触电阻检测单元与接点信号相连接或直接与信号发生器相连接；在在线校验接点信号采样单元的控制下，气体密度继电器本体的接点信号与其控制回路隔离，在接点信号发生动作时，和/或在接到检测接点接触电阻的指令时，接触电阻检测单元能够检测到气体密度继电器本体的接点接触电阻值。Preferably, the gas density relay (or gas density monitoring device) further includes a contact resistance detection unit; the contact resistance detection unit is connected to the contact signal or directly connected to the signal generator; the contact signal sampling unit is checked online Under the control of the gas density relay body, the contact signal of the gas density relay body is isolated from its control circuit. When the contact signal is activated, and/or when the contact resistance detection command is received, the contact resistance detection unit can detect the contact point of the gas density relay body Contact resistance value.

优选地，所述气体密度继电器(或气体密度监测装置)还包括绝缘电阻检测单元；所述绝缘电阻检测单元与接点信号相连接或直接与信号发生器相连接；在在线校验接点信号采样单元的控制下，气体密度继电器本体的接点信号与其控制回路隔离，在接点信号发生动作时，和/或在接到检测接点绝缘电阻的指令时，绝缘电阻检测单元能够检测到气体密度继电器本体的接点绝缘电阻值。Preferably, the gas density relay (or gas density monitoring device) further includes an insulation resistance detection unit; the insulation resistance detection unit is connected to the contact signal or directly connected to the signal generator; the contact signal sampling unit is checked online Under the control of the gas density relay, the contact signal of the gas density relay body is isolated from its control circuit. When the contact signal is activated, and/or when the instruction to detect the insulation resistance of the contact is received, the insulation resistance detection unit can detect the contact of the gas density relay body Insulation resistance value.

本申请第二个方面提供了一种气体密度继电器的校验方法，包括：The second aspect of this application provides a method for calibrating a gas density relay, including:

正常工作状态时，气体密度继电器监控电气设备内的气体密度值，同时气体密度继电器通过第一压力传感器、温度传感器以及智控单元在线监测电气设备内的气体密度值；In normal working conditions, the gas density relay monitors the gas density value in the electrical equipment, and at the same time the gas density relay monitors the gas density value in the electrical equipment online through the first pressure sensor, the temperature sensor and the intelligent control unit;

气体密度继电器根据设定的校验时间或/和校验指令，以及气体密度值情况，在允许校验气体密度继电器本体的状况下：The gas density relay is based on the set calibration time or/and calibration command, as well as the gas density value, under the condition that the gas density relay body is allowed to be calibrated:

通过智控单元把在线校验接点信号采样单元调整到校验状态，在校验状态下，在线校验接点信号采样单元切断气体密度继电器本体的接点信号的控制回路，将气体密度继电器本体的接点连接至智控单元；The online calibration contact signal sampling unit is adjusted to the calibration state through the intelligent control unit. In the calibration state, the online calibration contact signal sampling unit cuts off the control circuit of the contact signal of the gas density relay body, and connects the contacts of the gas density relay body Connect to the intelligent control unit;

智控单元通过控制压力调节机构，调节所述第三密封气室的压力升降，使得气体密度继电器本体发生接点动作，接点动作通过在线校验接点信号采样单元传递到智控单元，智控单元能够检测出气体密度继电器本体发生接点动作；或者，The intelligent control unit adjusts the pressure rise and fall of the third sealed gas chamber by controlling the pressure adjustment mechanism, so that the contact action of the gas density relay body occurs. The contact action is transmitted to the intelligent control unit through the online verification contact signal sampling unit, and the intelligent control unit can The contact action of the gas density relay body is detected; or,

智控单元通过控制压力调节机构，调节所述第三密封气室的压力升降，使得气体密度继电器本体发生接点动作，接点动作通过在线校验接点信号采样单元传递到智控单元，智控单元能够检测出气体密度继电器本体发生接点动作，以及所述智控单元检测出所述第三密封气室的气体密度值，完成气体密度继电器本体的接点信号动作值的直接或间接校验工作；The intelligent control unit adjusts the pressure rise and fall of the third sealed gas chamber by controlling the pressure adjustment mechanism, so that the contact action of the gas density relay body occurs. The contact action is transmitted to the intelligent control unit through the online verification contact signal sampling unit, and the intelligent control unit can It is detected that the contact action of the gas density relay body occurs, and the intelligent control unit detects the gas density value of the third sealed gas chamber, and completes the direct or indirect verification work of the contact signal action value of the gas density relay body;

当所有的接点信号校验工作完成后，智控单元复原压力调节机构，并将在线校验接点信号采样单元调整到工作状态，气体密度继电器本体的接点信号的控制回路恢复运行正常工作状态。When all the contact signal verification work is completed, the intelligent control unit restores the pressure adjustment mechanism and adjusts the online verification contact signal sampling unit to the working state, and the contact signal control loop of the gas density relay body resumes its normal working state.

优选地，一种气体密度继电器的校验方法，包括：Preferably, a calibration method of a gas density relay includes:

压力调节机构的气路，连通气体密度继电器本体的第三密封气室，从而将所述压力调节机构的气路与所述第三密封气室和设于第三密封气室内的第三压力传感器相连通；The gas path of the pressure regulating mechanism communicates with the third sealed gas chamber of the gas density relay body, thereby connecting the gas path of the pressure regulating mechanism with the third sealed gas chamber and the third pressure sensor arranged in the third sealed gas chamber Connected

气体密度继电器根据设定的校验时间或/和校验指令，以及气体密度值情况，在允许校验气体密度继电器的状况下：According to the set calibration time or/and calibration command, and the gas density value, the gas density relay is allowed to calibrate the gas density relay:

智控单元通过控制压力调节机构，调节所述第三密封气室的压力升降，使所述气体密度继电器本体发生接点信号动作；所述智控单元获取所述气体密度继电器本体发生接点信号动作或切换时、所述第一压力传感器采集的压力值P1和温度传感器采集的温度值T，以及所述第三压力传感器采集的压力值P3，并根据压力值P1和压力值P3计算得到等效气体压力值P；依照该等效气体压力值P，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验；或者， The intelligent control unit adjusts the pressure rise and fall of the third sealed gas chamber by controlling the pressure adjustment mechanism, so that the gas density relay body generates a contact signal action; the intelligent control unit obtains the gas density relay body to generate a contact signal action or When switching, the pressure value P1 collected by the first pressure sensor, the temperature value T collected by the temperature sensor, and the pressure value P3 collected by the third pressure sensor, and the equivalent gas is calculated according to the pressure value P1 and the pressure value P3 Pressure value P; According to the equivalent gas pressure value P, and according to the gas pressure-temperature characteristics, it is converted into a pressure value corresponding to 20°C, that is, the gas density value P ₂₀ , to complete the online calibration of the gas density relay; or,

所述智控单元获取所述气体密度继电器本体发生接点信号动作或切换时、所述第一压力传感器和温度传感器采集的气体密度值P1 ₂₀，以及所述第三压力传感器和温度传感器采集的气体密度值P3 ₂₀，并根据气体密度值P1 ₂₀和气体密度值P3 ₂₀计算得到气体密度值P ₂₀，完成所述气体密度继电器的在线校验； The intelligent control unit acquires operation when a contact signal to the bulk of the gas density relay or switch, the first pressure sensor and the temperature sensor gas density acquisition P1 _20, and the third pressure sensor and a temperature sensor to collect gas density P3 _20, P1 ₂₀ and the gas density and gas density value based on the calculated value P3 ₂₀ the gas density P _20, completing the gas density relay online verification;

更优选地，气体密度继电器本体发生接点信号动作或切换时，其等效气体压力值P＝P1-P3；依照该等效气体压力值P，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验；或者， More preferably, when the gas density relay body generates contact signal action or switching, its equivalent gas pressure value P=P1-P3; according to the equivalent gas pressure value P, and according to the gas pressure-temperature characteristic, it becomes a corresponding 20℃ The pressure value, namely the gas density value P ₂₀ , completes the online verification of the gas density relay; or,

气体密度继电器本体发生接点信号动作或切换时，其等效气体压力值P＝P1-P3*K，其中K为预设系数；依照该等效气体压力值P、温度值T，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验。 When the gas density relay body generates contact signal action or switching, its equivalent gas pressure value P=P1-P3*K, where K is the preset coefficient; according to the equivalent gas pressure value P, temperature value T, and according to the gas pressure -The temperature characteristic is converted into a pressure value corresponding to 20°C, that is, the gas density value P ₂₀ , and the online calibration of the gas density relay is completed.

更优选地，气体密度继电器本体发生接点信号动作或切换时，其气体密度值P ₂₀和气体密度值P1 ₂₀、P3 ₂₀之间的对应关系设计成数据表格，并根据气体密度值P1 ₂₀和气体密度值 P3 ₂₀查询所述数据表格得到对应的气体密度值P ₂₀，完成所述气体密度继电器的在线校验；或者， More preferably, when the gas density relay body generates contact signal action or switching, _{the corresponding relationship between the gas density value P 20} and the gas density values P1 ₂₀ and P3 ₂₀ is designed into a data table, and is based on the gas density value P1 ₂₀ and the gas The density value P3 ₂₀ queries the data table to obtain the corresponding gas density value P ₂₀ to complete the online verification of the gas density relay; or,

气体密度继电器本体发生接点信号动作或切换时，其气体密度值P ₂₀和气体压力值P1、P3以及温度值T之间的对应关系设计成数据表格，并根据气体压力值P1、P3以及温度值T查询所述数据表格得到对应的气体密度值P ₂₀，完成所述气体密度继电器的在线校验。 When the gas density relay body produces contact signal action or switching, _{the corresponding relationship between the gas density value P 20} and the gas pressure value P1, P3 and temperature value T is designed into a data table, and is based on the gas pressure value P1, P3 and temperature value T queries the data table to obtain the corresponding gas density value P ₂₀ , and completes the online verification of the gas density relay.

优选地，所述第一压力传感器和所述第三压力传感器为绝对压力型传感器；或者，所述第一压力传感器和所述第三压力传感器为相对压力型传感器；或者，所述第一压力传感器和所述第三压力传感器不是同类型传感器时，进行大气压的修正。Preferably, the first pressure sensor and the third pressure sensor are absolute pressure sensors; or, the first pressure sensor and the third pressure sensor are relative pressure sensors; or, the first pressure When the sensor and the third pressure sensor are not of the same type, the atmospheric pressure is corrected.

优选地，所述接点信号包括报警、和/或闭锁。Preferably, the contact signal includes alarm and/or lockout.

优选地，所述第一压力传感器、温度传感器为一体化结构；或者，所述第一压力传感器、温度传感器为一体化结构的气体密度变送器；或者，所述第一压力传感器和温度传感器组成石英音叉技术的密度检测传感器。Preferably, the first pressure sensor and the temperature sensor are an integrated structure; or the first pressure sensor and the temperature sensor are a gas density transmitter with an integrated structure; or the first pressure sensor and the temperature sensor Density detection sensor composed of quartz tuning fork technology.

优选地，所述气体密度继电器完成校验后，如有异常，能够自动发出报警，并上传至远端、或发送至指定的接收机上。Preferably, after the gas density relay completes the calibration, if there is an abnormality, it can automatically send an alarm and upload it to the remote end or send it to the designated receiver.

优选地，所述校验方法还包括：现场就地显示气体密度值和校验结果，或通过后台显示气体密度值和校验结果。Preferably, the verification method further includes: displaying the gas density value and the verification result on the spot, or displaying the gas density value and the verification result through the background.

优选地，所述校验方法还包括：所述智控单元的控制通过现场控制，和/或通过后台控制。Preferably, the verification method further includes: controlling the intelligent control unit through on-site control and/or through background control.

与现有技术相比，本发明的技术方案具有以下有益效果：Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

本申请的压力调节机构不是与气体密度继电器本体或电气设备的SF6主气路相连通，而是与气体密度继电器本体的第三密封气室相连通，通过压力调节机构的作用，使得气体密度继电器本体发生接点动作，接点动作通过在线校验接点信号采样单元传递到智控单元，智控单元能够检测出气体密度继电器本体发生接点动作，完成气体密度继电器本体的接点信号动作值的校验工作，无须检修人员到现场校验，实现了对气体密度继电器的全寿命周期智能化管理：有问题才修理，没有问题就不要运维服务。本申请提高了电网的可靠性，大大降低其密封要求，提高了效率，降低了运行维护成本，提高了现场安装的方便性和灵活性，可以实现气体密度继电器的免维护，同时整个校验过程实现了SF6气体零排放，符合环保规程要求。The pressure regulating mechanism of the present application is not connected to the gas density relay body or the SF6 main gas circuit of the electrical equipment, but is connected to the third sealed gas chamber of the gas density relay body. The pressure regulating mechanism makes the gas density relay The contact action occurs on the body, and the contact action is transmitted to the intelligent control unit through the online verification contact signal sampling unit. The intelligent control unit can detect the contact action of the gas density relay body and complete the verification of the contact signal action value of the gas density relay body. There is no need for maintenance personnel to go to the site for verification, and the intelligent management of the entire life cycle of the gas density relay is realized: repairs only if there are problems, no operation and maintenance services if there are no problems. This application improves the reliability of the power grid, greatly reduces its sealing requirements, improves efficiency, reduces operation and maintenance costs, improves the convenience and flexibility of on-site installation, and can realize maintenance-free gas density relays, and at the same time the entire calibration process It has achieved zero emission of SF6 gas and complies with the requirements of environmental protection regulations.

附图说明Description of the drawings

构成本申请的一部分附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings constituting a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

图1是实施例一的具有在线自校验功能的气体密度继电器的结构示意图；Fig. 1 is a schematic diagram of the structure of a gas density relay with online self-checking function in the first embodiment;

图2是实施例二的具有在线自校验功能的气体密度继电器的结构示意图；2 is a schematic diagram of the structure of the gas density relay with online self-checking function of the second embodiment;

图3是实施例三的具有在线自校验功能的气体密度继电器的结构示意图。Fig. 3 is a schematic diagram of the structure of the gas density relay with online self-checking function of the third embodiment.

具体实施方式Detailed ways

为使本发明的目的、技术方案及效果更加清楚、明确，以下参照附图并举实例对本发明进一步详细说明。应当理解，具体实施例仅用以解释本发明，并不用于限定本发明。In order to make the objectives, technical solutions, and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments are only used to explain the present invention, but not used to limit the present invention.

实施例一：Example one:

如图1所示，本实施例提供的一种具有在线自校验功能的气体密度继电器(或气体密度监测装置)，包括：气体密度继电器本体1、第一压力传感器2、第二压力传感器4、第三压力传感器14、温度传感器3、压力调节机构5、在线校验接点信号采样单元6、智控单元7、多通接头9和阀12。气体密度继电器本体1、压力传感器2、温度传感器3、在线校验接点信号采样单元6和智控单元7设置在多通接头9上。As shown in Figure 1, the present embodiment provides a gas density relay (or gas density monitoring device) with an online self-checking function, including: a gas density relay body 1, a first pressure sensor 2, a second pressure sensor 4 , The third pressure sensor 14, the temperature sensor 3, the pressure adjustment mechanism 5, the online verification contact signal sampling unit 6, the intelligent control unit 7, the multi-way connector 9 and the valve 12. The gas density relay body 1, the pressure sensor 2, the temperature sensor 3, the online verification contact signal sampling unit 6 and the intelligent control unit 7 are arranged on the multi-way connector 9.

所述气体密度继电器本体1主要包括：外壳、第一波纹管104、第二波纹管103、信号发生器(本实施例为微动开关)102、信号调节机构101。其中，所述第一波纹管104的第一开口端固定在所述外壳的内壁上，所述第一波纹管104的第二开口端与第一密封件108密封连接，所述第一波纹管104的内壁、所述第一密封件108、所述外壳的内壁共同围成第一密封气室G1，第一密封气室G1内充有密度值为P _20BC的标准补偿气体，即本实施例中的第一密封气室G1为温度补偿标准气室。第二压力传感器4与第一密封气室G1相连通，用于采集第一密封气室G1内的气体压力。所述第二波纹管103的第一开口端与所述第一密封件108密封连接，所述第二波纹管103的第二开口端口通过第二密封件109与所述外壳的内壁固定连接，所述第一波纹管104的外壁、所述第一密封件108、所述第二波纹管103的外壁、所述第二密封件109及所述外壳的内壁共同围成第二密封气室G2，所述第二密封气室G2通过多通接头9与电气设备接头13相连通，即第二密封气室G2与电气设备的绝缘气体相连通。所述第二波纹管103的内壁、所述第二密封件109及所述外壳的内壁共同围成第三密封气室G3，第三压力传感器14设置在第三密封气室G3内。所述信号调节机构 101和所述信号发生器102设置在所述第三密封气室G3内，所述信号调节机构101与所述第一密封件108连接，所述信号发生器102对应所述信号调节机构101设置，所述气体密度继电器本体1通过所述信号发生器102输出接点信号。本实施例中，所述信号调节机构101包括一移动杆，所述移动杆的一端伸入所述第二波纹管103内，与所述第一密封件108连接，并随第一波纹管104的形变产生位移；所述移动杆的另一端伸出所述第二波纹管103，固定连接一横杆(或板件)，所述横杆(或板件)设有若干调节螺钉10101。当第三密封气室G3内的气体压力发生变化，第一密封气室G1和第三密封气室G3作用于第一波纹管104的上端面上的力的平衡被打破，使得第一波纹管104随压力变化发现形变，产生一定的位移，带动移动杆101移动，移动杆101带动调节螺钉10101触动信号发生器102的按钮，信号发生器102发出报警、闭锁信号。 The gas density relay body 1 mainly includes a housing, a first bellows 104, a second bellows 103, a signal generator (micro switch in this embodiment) 102, and a signal adjustment mechanism 101. Wherein, the first open end of the first bellows 104 is fixed on the inner wall of the housing, and the second open end of the first bellows 104 is in sealed connection with the first sealing member 108, and the first bellows The inner wall of 104, the first sealing member 108, and the inner wall of the housing jointly enclose a first sealed gas chamber G1, and the first sealed gas chamber G1 is filled with _{a standard compensation gas with a density of P 20BC} , that is, in this embodiment The first sealed gas chamber G1 in is a temperature-compensated standard gas chamber. The second pressure sensor 4 communicates with the first sealed gas chamber G1 and is used to collect the gas pressure in the first sealed gas chamber G1. The first open end of the second bellows 103 is in sealed connection with the first seal 108, and the second open port of the second bellows 103 is fixedly connected to the inner wall of the housing through the second seal 109, The outer wall of the first bellows 104, the first sealing member 108, the outer wall of the second bellows 103, the second sealing member 109, and the inner wall of the outer shell collectively enclose a second sealed gas chamber G2 The second sealed gas chamber G2 is communicated with the electrical equipment connector 13 through the multi-way joint 9, that is, the second sealed gas chamber G2 is communicated with the insulating gas of the electrical equipment. The inner wall of the second bellows 103, the second sealing member 109, and the inner wall of the shell jointly enclose a third sealed gas chamber G3, and the third pressure sensor 14 is disposed in the third sealed gas chamber G3. The signal adjustment mechanism 101 and the signal generator 102 are arranged in the third sealed gas chamber G3, the signal adjustment mechanism 101 is connected to the first seal 108, and the signal generator 102 corresponds to the The signal adjustment mechanism 101 is provided, and the gas density relay body 1 outputs a contact signal through the signal generator 102. In this embodiment, the signal adjustment mechanism 101 includes a moving rod, one end of the moving rod extends into the second bellows 103, is connected to the first sealing member 108, and follows the first bellows 104 The other end of the movable rod extends out of the second bellows 103, and is fixedly connected to a cross rod (or plate), and the cross rod (or plate) is provided with a number of adjusting screws 10101. When the gas pressure in the third sealed gas chamber G3 changes, the balance of the forces acting on the upper end surface of the first bellows 104 in the first sealed gas chamber G1 and the third sealed gas chamber G3 is broken, so that the first bellows When pressure changes, 104 finds a deformation and produces a certain displacement, which drives the moving rod 101 to move, and the moving rod 101 drives the adjusting screw 10101 to touch the button of the signal generator 102, and the signal generator 102 sends out an alarm and lock signal.

本实施例中，所述第一压力传感器2，与所述气体密度继电器本体1的第二密封气室G2相连通；所述第二压力传感器4，与所述气体密度继电器本体1的第一密封气室G1相连通；所述第三压力传感器14，与所述气体密度继电器本体1的第三密封气室G3相连通。所述压力调节机构5，设置在所述气体密度继电器本体1外，所述压力调节机构5的气路与所述第三密封气室G3相连通，被配置为调节所述第三密封气室G3的气体压力，使所述气体密度继电器本体1发生接点信号动作。所述在线校验接点信号采样单元6，与所述气体密度继电器本体1的信号发生器102直接或间接相连接，被配置为采样所述气体密度继电器本体1发生接点信号动作的接点信号，所述接点信号包括报警、和/或闭锁。所述智控单元7，分别与压力调节机构5、第一压力传感器2、第二压力传感器4、第三压力传感器14、温度传感器3和在线校验接点信号采样单元6相连接，被配置为完成所述压力调节机构5的控制，压力值采集和温度值采集、和/或气体密度值采集，以及检测所述气体密度继电器本体1的接点信号动作值和/或接点信号返回值。第三压力传感器14可以设置在第三密封气室G3上，或者，第三压力传感器14还可以设置在压力调节机构5上，或者与其第三密封G3气室连接的气路上。总之，第三压力传感器14在气路上与第三密封气室G3相连通。In this embodiment, the first pressure sensor 2 is connected to the second sealed gas chamber G2 of the gas density relay body 1; the second pressure sensor 4 is connected to the first gas density relay body 1 The sealed gas chamber G1 is in communication; the third pressure sensor 14 is in communication with the third sealed gas chamber G3 of the gas density relay body 1. The pressure adjusting mechanism 5 is arranged outside the gas density relay body 1, and the gas path of the pressure adjusting mechanism 5 is in communication with the third sealed gas chamber G3, and is configured to adjust the third sealed gas chamber The gas pressure of G3 causes the gas density relay body 1 to generate a contact signal action. The online verification contact signal sampling unit 6 is directly or indirectly connected to the signal generator 102 of the gas density relay body 1, and is configured to sample the contact signal of the gas density relay body 1 that generates the contact signal action, so The contact signal includes alarm and/or lockout. The intelligent control unit 7 is respectively connected to the pressure adjusting mechanism 5, the first pressure sensor 2, the second pressure sensor 4, the third pressure sensor 14, the temperature sensor 3 and the online verification contact signal sampling unit 6, and is configured to The control of the pressure adjusting mechanism 5 is completed, the pressure value collection, the temperature value collection, and/or the gas density value collection, and the detection of the contact signal action value and/or the contact signal return value of the gas density relay body 1 are completed. The third pressure sensor 14 may be arranged on the third sealed gas chamber G3, or the third pressure sensor 14 may also be arranged on the pressure adjusting mechanism 5 or the gas path connected to the third sealed gas chamber G3. In short, the third pressure sensor 14 communicates with the third sealed gas chamber G3 on the gas path.

本实施例的压力调节机构5主要由气囊51、活塞52、密封圈53、连接杆54、驱动部件55组成。所述气囊51与所述气体密度继电器本体1的第三密封气室G3相连通。压力调节机构5根据智控单元7的控制，使得驱动部件55推动连接杆54，进而推动活塞52，进而推动气囊51发生体积变化，完成第三密封气室G3的气体压力的升降。所述驱动部件55包括、但不限于磁力驱动机构、电机、往复运动机构、卡诺循环机构、磁耦合推力机构、加热产生推力机构、电加热产生推力机构、化学反应产生推力机构、气动元件中的一种。The pressure adjustment mechanism 5 of this embodiment is mainly composed of an airbag 51, a piston 52, a sealing ring 53, a connecting rod 54, and a driving component 55. The airbag 51 communicates with the third sealed gas chamber G3 of the gas density relay body 1. According to the control of the intelligent control unit 7, the pressure adjusting mechanism 5 causes the driving component 55 to push the connecting rod 54, thereby pushing the piston 52, and then pushing the airbag 51 to change in volume, completing the lifting and lowering of the gas pressure in the third sealed gas chamber G3. The driving component 55 includes, but is not limited to, a magnetic drive mechanism, a motor, a reciprocating motion mechanism, a Carnot cycle mechanism, a magnetic coupling thrust mechanism, a heating generating thrust mechanism, an electric heating generating thrust mechanism, a chemical reaction generating thrust mechanism, and pneumatic components. Kind of.

压力调节机构5和所述气体密度继电器本体1的第三密封气室G3相连接的气路上设置有阀12，具体地，阀12的一端与所述第三密封气室G3和压力调节机构5的气囊51连通，另一端设有保护罩1201。阀12为电动阀、和/或电磁阀，或为压电阀，或为温度控制的阀，或为采用智能记忆材料制作的、采用电加热开启或关闭的新型阀。非校验状态时，阀12为关闭状态；校验时，阀12为开启状态。A valve 12 is provided on the gas path connecting the pressure regulating mechanism 5 and the third sealed gas chamber G3 of the gas density relay body 1. Specifically, one end of the valve 12 is connected to the third sealed gas chamber G3 and the pressure regulating mechanism 5. The airbag 51 is connected, and the other end is provided with a protective cover 1201. The valve 12 is an electric valve, and/or a solenoid valve, or a piezoelectric valve, or a temperature-controlled valve, or a new type valve made of smart memory material that is opened or closed by electric heating. In the non-calibration state, the valve 12 is in the closed state; in the verification state, the valve 12 is in the open state.

当然，本实施例中的第一密封气室G1和第二密封气室G2的位置可以互换。例如，所述第一波纹管104的内壁、所述第一密封件108、所述外壳的内壁共同围成所述第二密封气室，第二密封气室内充有密度值为P _20BC的标准补偿气体；所述第一波纹管104的外壁、所述第一密封件108、所述第二波纹管103的外壁、所述第二密封件109及所述外壳的内壁共同围成所述第一密封气室，所述第一密封气室设有与电气设备的绝缘气体相连通的接口。具体地，第一密封气室和第二密封气室的位置可以根据需要灵活设计。 Of course, the positions of the first sealed gas chamber G1 and the second sealed gas chamber G2 in this embodiment can be interchanged. For example, the inner wall of the first bellows 104, the first sealing member 108, and the inner wall of the housing jointly enclose the second sealed gas chamber, and the second sealed gas chamber is filled with a standard _{with a density value of P 20BC} Compensation gas; the outer wall of the first bellows 104, the first sealing member 108, the outer wall of the second bellows 103, the second sealing member 109 and the inner wall of the housing together form the first A sealed gas chamber, and the first sealed gas chamber is provided with an interface communicating with the insulating gas of the electrical equipment. Specifically, the positions of the first sealed air chamber and the second sealed air chamber can be flexibly designed as required.

工作原理：working principle:

智控单元7根据第一压力传感器2、温度传感器3监测到电气设备的气体压力和温度，得到相应的20℃压力值P ₂₀(即气体密度值)，可以远传在线监测，即所述智控单元7获取所述第一压力传感器2、温度传感器3采集的气体密度值；或者，所述智控单元7获取所述第一压力传感器2采集的压力值，以及温度传感器3采集的温度值，完成所述气体密度继电器对所监测的电气设备的气体密度的在线监测。同时，所述智控单元7获取所述第三压力传感器14、温度传感器3采集的气体密度值；或者，所述智控单元7获取所述第三压力传感器14采集的压力值和温度传感器3采集的温度值，完成对所述第三密封气室G3的气体密度值的在线监测。此时，第一密封气室G1的气体密度值大于第三密封气室G3的气体密度值，即第一密封气室G1的气体密度值与第三密封气室G3的气体密度值的差值大于某一设定值，由图1可知，信号调节机构101的调节螺钉10101和信号发生器102之间存在相应的距离，此时的调节螺钉10101没有接触信号发生器102，即没有触发信号发生器102，信号发生器102没有动作，其接点信号没有输出。 The intelligent control unit 7 monitors the gas pressure and temperature of the electrical equipment according to the first pressure sensor 2 and the temperature sensor 3, and obtains the corresponding 20°C pressure value P ₂₀ (that is, the gas density value), which can be remotely transmitted online monitoring, that is, the intelligent The control unit 7 obtains the gas density value collected by the first pressure sensor 2 and the temperature sensor 3; or, the intelligent control unit 7 obtains the pressure value collected by the first pressure sensor 2 and the temperature value collected by the temperature sensor 3 , Complete the on-line monitoring of the gas density of the monitored electrical equipment by the gas density relay. At the same time, the intelligent control unit 7 obtains the gas density values collected by the third pressure sensor 14 and the temperature sensor 3; or, the intelligent control unit 7 obtains the pressure values collected by the third pressure sensor 14 and the temperature sensor 3 The collected temperature value completes the online monitoring of the gas density value of the third sealed gas chamber G3. At this time, the gas density value of the first sealed gas chamber G1 is greater than the gas density value of the third sealed gas chamber G3, that is, the difference between the gas density value of the first sealed gas chamber G1 and the gas density value of the third sealed gas chamber G3 More than a certain set value, it can be seen from Figure 1 that there is a corresponding distance between the adjustment screw 10101 of the signal adjustment mechanism 101 and the signal generator 102. At this time, the adjustment screw 10101 does not touch the signal generator 102, that is, no trigger signal is generated. The signal generator 102 and the signal generator 102 do not operate, and their contact signals are not output.

当需要校验密度继电器本体1时，此时如果气体密度值P ₂₀≥设定的安全校验密度值P _S；气体密度继电器就发出指令，智控单元7断开气体密度继电器本体1的控制回路，使得在线校验气体密度继电器本体1时不会影响电气设备的安全运行，也不会在校验时，误发报警信号，或闭锁控制回路。因为气体密度继电器在开始校验前，已经进行气体密度值P ₂₀≥ 设定的安全校验密度值P _S的监测和判断，电气设备的气体是在安全运行范围内的，况且气体泄漏是个缓慢的过程，校验时是安全的。同时，智控单元7连通气体密度继电器本体1的接点采样电路。 When the density relay body 1 needs to be checked, if the gas density value P ₂₀ ≥ the set safety check density value P _S , the gas density relay sends an instruction, and the intelligent control unit 7 disconnects the control of the gas density relay body 1 Circuit, so that the on-line calibration of the gas density relay body 1 will not affect the safe operation of electrical equipment, and will not mistakenly send an alarm signal or block the control circuit during calibration. _{Because the gas density relay has been monitoring and judging the gas density value P 20} ≥ the set safety verification density value P _S before starting the calibration, the gas of the electrical equipment is within the safe operation range, and the gas leakage is slow The process of verification is safe. At the same time, the intelligent control unit 7 is connected to the contact sampling circuit of the gas density relay body 1.

接着，通过智控单元7开启阀12，使得气体密度继电器本体1的所述第三密封气室G3在气路上与压力调节机构5的气路相连通。然后，智控单元7控制压力调节机构5的驱动部件55(可以主要采用电机(马达)和齿轮实现，其方式多样、灵活)，进而调节压力调节机构5的活塞52，使得由活塞52、气囊51、气体密度继电器本体1的所述第三密封气室G3组成的密封腔体发生体积变化(体积减小)，气体密度继电器本体1的所述第三密封气室G3气体的压力逐步上升，作用于第一波纹管104的上端面的压力增大，使得第一波纹管104的上端面和带动调节螺钉10101的移动杆向下产生位移，调节螺钉10101和信号发生器102之间的距离会减小，当距离小于相应的值，信号调节机构101的调节螺钉10101接触到了信号发生器102，即触发信号发生器102，信号发生器102的接点动作(接通)，发出相应的接点信号(报警或闭锁)。接点动作通过在线校验接点信号采样单元6上传到智控单元7，所述智控单元7获取所述气体密度继电器本体1发生接点信号动作或切换时、所述第一压力传感器2采集的压力值P1和温度传感器3采集的温度值T，以及所述第三压力传感器14采集的压力值P3，并根据压力值P1和压力值P3计算得到等效气体压力值P；依照该等效气体压力值P，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验。或者，所述智控单元7获取所述气体密度继电器本体1发生接点信号动作或切换时、所述第一压力传感器2和温度传感器3采集的气体密度值P1 ₂₀，以及所述第三压力传感器14和温度传感器3采集的气体密度值P3 ₂₀，并根据气体密度值P1 ₂₀和气体密度值P3 ₂₀计算得到气体密度值P ₂₀，完成所述气体密度继电器的在线校验。进一步来说，气体密度继电器本体1发生接点信号动作或切换时，其等效气体压力值P＝P1-P3；依照该等效气体压力值P，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验；或者，气体密度继电器本体1发生接点信号动作或切换时，其等效气体压力值P＝P1-P3*K，其中K为预设系数，根据密度继电器本体特性得到；依照该等效气体压力值P、温度值T，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验。或者还可以，气体密度继电器本体1发生接点信号动作或切换时，其气体密度值P ₂₀和气体密度值P1 ₂₀、P3 ₂₀之间的对应关系设计成数据表格，并根据气体密度值P1 ₂₀和气体密度值P3 ₂₀查询所述数据表格得到对应的气体密度值P ₂₀，完成所述气体密度继电器的在线校验；或者，气体密度继电器本体1发生接点信号动作或切换时，其气体密度值P ₂₀和气体压力值P1、P3以及温度值T之间的对应关系设计成数据表格，并根据气体压力值P1、P3以及温度值T查询所述数据表格得到对应的气体密度值P ₂₀，完成所述气体密度继电器的在线校验。例如以所校验的SF6气体密度继电器的参数：额定压力值0.7MPa、报警压力值0.65MPa、闭锁压力值0.60MPa(abs.)为例子。假设校验的温度T＝10℃，本次校验初始时，智控单元7检测到第一密封气室G1(即温度补偿标准气室)的气体压力值P _BCCS＝0.6186MPa(abs.)、对应的气体密度值为P _20BCCS＝0.645MPa(abs.)。假设在校验报警接点信号动作时，所述第一压力传感器2采集的压力值P1＝0.6756MPa，所述温度传感器3采集的温度值T＝10℃，以及所述第三压力传感器14采集的压力值P3＝0.11MPa，根据密度继电器本体特性得到预设系数K＝0.5；则其等效气体压力值P＝P1-P3*K＝0.6756-0.11*0.5＝0.6206MPa(abs.)；依照该等效气体压力值P＝0.6206MPa(abs.)，以及按照气体压力-温度特性换算成为对应20℃的压力值，即报警接点的动作值P _BJD20为0.6471MPa(abs.)，其误差为0.6471-0.65＝-0.0029MPa，这样就方便地完成所述气体密度继电器报警接点的在线校验；假设在校验闭锁接点信号动作时，所述第一压力传感器2采集的压力值P1＝0.6756MPa，所述温度传感器3采集的温度值T＝10℃，以及所述第三压力传感器14采集的压力值P3＝0.182MPa，其等效气体压力值P＝P1-P3*K＝0.6756-0.182*0.5＝0.5846MPa(abs.)；依照该等效气体压力值P＝0.5846MPa(abs.)，以及按照SF6气体压力-温度特性换算成为对应20℃的压力值，即报闭锁警接点的动作值P _BSD20为0.6093MPa(abs.)，其误差为0.6093-0.60＝-0.0093MPa，这样就方便地完成所述气体密度继电器闭锁接点的在线校验。如此反复校验多次(例如2～3次)，然后计算其平均值，这样就完成了气体密度继电器本体1的校验工作。 Then, the valve 12 is opened by the intelligent control unit 7 so that the third sealed gas chamber G3 of the gas density relay body 1 is in communication with the gas path of the pressure adjusting mechanism 5 on the gas path. Then, the intelligent control unit 7 controls the driving part 55 of the pressure adjustment mechanism 5 (which can be realized mainly by electric motors (motors) and gears, which are various and flexible), and then adjusts the piston 52 of the pressure adjustment mechanism 5 so that the piston 52 and the airbag 51. The sealed cavity composed of the third sealed gas chamber G3 of the gas density relay body 1 changes in volume (volume decreases), and the pressure of the gas in the third sealed gas chamber G3 of the gas density relay body 1 gradually rises. The pressure acting on the upper end surface of the first bellows 104 increases, so that the upper end surface of the first bellows 104 and the moving rod that drives the adjustment screw 10101 are displaced downward, and the distance between the adjustment screw 10101 and the signal generator 102 will change. Decrease, when the distance is less than the corresponding value, the adjustment screw 10101 of the signal adjustment mechanism 101 touches the signal generator 102, that is, the signal generator 102 is triggered, the contact of the signal generator 102 is activated (connected), and the corresponding contact signal ( Alarm or lockout). The contact action is uploaded to the intelligent control unit 7 through the online verification contact signal sampling unit 6. The intelligent control unit 7 obtains the pressure collected by the first pressure sensor 2 when the gas density relay body 1 undergoes contact signal action or switching. The value P1, the temperature value T collected by the temperature sensor 3, and the pressure value P3 collected by the third pressure sensor 14, and the equivalent gas pressure value P is calculated according to the pressure value P1 and the pressure value P3; according to the equivalent gas pressure The value P is converted into a pressure value corresponding to 20°C according to the gas pressure-temperature characteristic, that is, the gas density value P ₂₀ , and the online calibration of the gas density relay is completed. _{Alternatively, the intelligent control unit 7 obtains the gas density value P1 20} collected by the first pressure sensor 2 and the temperature sensor 3 when the gas density relay body 1 performs contact signal action or switching, and the third pressure sensor 14 and the gas density value P3 ₂₀ collected by the temperature sensor 3, and calculate the gas density value P ₂₀ according to the gas density value P1 ₂₀ and the gas density value P3 _{20 to} complete the online verification of the gas density relay. Furthermore, when the gas density relay body 1 generates contact signal action or switching, its equivalent gas pressure value P=P1-P3; according to the equivalent gas pressure value P, and according to the gas pressure-temperature characteristic, it becomes 20℃ The pressure value of the gas density value P ₂₀ , to complete the online calibration of the gas density relay; or, when the gas density relay body 1 has contact signal action or switching, its equivalent gas pressure value P=P1-P3*K , Where K is a preset coefficient, which is obtained according to the characteristics of the density relay; according to the equivalent gas pressure value P, temperature value T, and according to the gas pressure-temperature characteristics, it is converted into a pressure value corresponding to 20℃, that is, the gas density value P ₂₀ , To complete the online verification of the gas density relay. Or, when the gas density relay body 1 generates contact signal action or switching, _{the corresponding relationship between the gas density value P 20} and the gas density values P1 ₂₀ , P3 ₂₀ is designed into a data table, and the gas density value P1 ₂₀ and The gas density value P3 ₂₀ queries the data table to obtain the corresponding gas density value P ₂₀ to complete the on-line verification of the gas density relay; or, when the gas density relay body 1 generates contact signal action or switching, its gas density value P _{The corresponding relationship between 20} and the gas pressure values P1, P3 and the temperature value T is designed into a data table, and the data table is queried according to the gas pressure values P1, P3 and the temperature value T to obtain the corresponding gas density value P ₂₀ to complete the calculation The online calibration of the gas density relay. For example, take the verified parameters of the SF6 gas density relay: the rated pressure value of 0.7 MPa, the alarm pressure value of 0.65 MPa, and the blocking pressure value of 0.60 MPa (abs.) as an example. Assuming that the temperature T=10°C of the calibration, at the beginning of this calibration, the intelligent control unit 7 detects the gas pressure value P _{BCCS of the} first sealed gas chamber G1 (ie, temperature-compensated standard gas chamber) = 0.6186MPa(abs.) , The corresponding gas density value is P _20BCCS =0.645MPa(abs.). Suppose that when the alarm contact signal is checked, the pressure value P1 collected by the first pressure sensor 2 = 0.6756 MPa, the temperature value T collected by the temperature sensor 3 = 10°C, and the pressure value collected by the third pressure sensor 14 The pressure value P3＝0.11MPa, the preset coefficient K＝0.5 is obtained according to the characteristics of the density relay; then its equivalent gas pressure value P＝P1-P3*K＝0.6756-0.11*0.5＝0.6206MPa(abs.); according to this The equivalent gas pressure value P=0.6206MPa(abs.), and the pressure value corresponding to 20℃ is converted according to the gas pressure-temperature characteristic, that is, the operating value of the alarm contact P _BJD20 is 0.6471MPa(abs.), and the error is 0.6471 -0.65=-0.0029MPa, in this way, the online verification of the alarm contact of the gas density relay can be conveniently completed; suppose that the pressure value P1 collected by the first pressure sensor 2 = 0.6756MPa when the signal of the locking contact is verified. The temperature value T collected by the temperature sensor 3 = 10°C, and the pressure value P3 collected by the third pressure sensor 14 = 0.182 MPa, and its equivalent gas pressure value P = P1-P3*K = 0.6756-0.182*0.5 ＝0.5846MPa(abs.); According to the equivalent gas pressure value P＝0.5846MPa(abs.), and according to the SF6 gas pressure-temperature characteristics, it is converted into a pressure value corresponding to 20℃, that is, the action value P of the alarm contact closure _{The BSD20} is 0.6093MPa (abs.), and its error is 0.6093-0.60=-0.0093MPa, which makes it easy to complete the online verification of the gas density relay lock contact. This is repeated for many times (for example, 2 to 3 times), and then the average value is calculated. In this way, the calibration of the gas density relay body 1 is completed.

然后，智控单元7断开气体密度继电器本体1的接点采样电路，此时气体密度继电器本体1的接点就与智控单元7不相连。同时，通过智控单元7控制压力调节机构5的驱动部件55，进而调节压力调节机构5的活塞52，使得由活塞52、气囊51、气体密度继电器本体1的所述第三密封气室G3组成的密封腔体发生体积变化(体积增大)，气体密度继电器本体1的所述第三密封气室G3气体的压力逐步减小，作用于第一波纹管104的上端面的压力减小。调节所述第三密封气室G3的气体密度值到规定的设定值后，第一密封气室G1内的气体压力大于第三密封气室G3内的气体压力，就会推动第一波纹管104的上端面和设有调节螺钉10101的移动杆向上移动，使得调节螺钉10101和信号发生器102之间存在相应的距离，调节螺钉10101不接触信号发生器102，同时，智控单元7立即关闭阀12，使得气体密度继电器本体1的所述第三密封气室G3在气路上与压力调节机构5不连通。通过智控单元7连通气体密度继电器本体1的控制回路，气体密度继电器本体1的密度监控回路正常工作，气体密度继电器本体1安全监控电气设备的气体密度，使电气设备安全可靠地工作。这样就方便完成气体密度继电器本体1的在线校验工作，同时在线校验气体密度继电器本体1时不会影响电气设备的安全运行。Then, the intelligent control unit 7 disconnects the contact sampling circuit of the gas density relay body 1, and the contact of the gas density relay body 1 is not connected to the intelligent control unit 7 at this time. At the same time, the drive component 55 of the pressure adjusting mechanism 5 is controlled by the intelligent control unit 7, and then the piston 52 of the pressure adjusting mechanism 5 is adjusted so that it is composed of the piston 52, the air bag 51, and the third sealed gas chamber G3 of the gas density relay body 1. The volume of the sealed cavity changes (increase in volume), the gas pressure of the third sealed gas chamber G3 of the gas density relay body 1 gradually decreases, and the pressure acting on the upper end surface of the first bellows 104 decreases. After adjusting the gas density value of the third sealed gas chamber G3 to the specified set value, the gas pressure in the first sealed gas chamber G1 is greater than the gas pressure in the third sealed gas chamber G3, and the first bellows will be pushed The upper end surface of 104 and the moving rod provided with the adjusting screw 10101 move upwards, so that there is a corresponding distance between the adjusting screw 10101 and the signal generator 102, the adjusting screw 10101 does not touch the signal generator 102, and at the same time, the intelligent control unit 7 is immediately closed The valve 12 makes the third sealed gas chamber G3 of the gas density relay body 1 not communicate with the pressure regulating mechanism 5 on the gas path. The control circuit of the gas density relay body 1 is connected through the intelligent control unit 7, the density monitoring circuit of the gas density relay body 1 works normally, and the gas density relay body 1 safely monitors the gas density of electrical equipment, so that the electrical equipment can work safely and reliably. In this way, it is convenient to complete the online verification work of the gas density relay body 1, and at the same time, the safe operation of the electrical equipment will not be affected when the gas density relay body 1 is verified online.

当气体密度继电器本体1完成了校验工作后，气体密度继电器就进行判定，可以告示检测结果。方式灵活，具体来说可以：1)气体密度继电器可以就地告示，例如通过指示灯、数码或液晶等显示；2)或气体密度继电器可以通过在线远传通讯方式实施上传，例如可以上传到在线监测***的后台；3)或通过无线上传，上传到特定的终端，例如可以无线上传手机；4)或通过别的途径上传；5)或把异常结果通过报警信号线或专用信号线上传；6)单独上传，或与其它信号捆绑上传。总之，气体密度继电器完成在线校验工作后，如有异常，能够自动发出报警，可以上传到远端，或可以发送到指定的接收机上，例如发送到手机。或者，气体密度继电器完成校验工作后，如有异常，智控单元7可以通过气体密度继电器本体1的报警接点信号上传远端(监控室、后台监控平台等)，以及还可以就地显示告示。简单版的气体密度继电器在线校验，可以把校验有异常的结果通过报警信号线上传。可以以一定的规律上传，例如异常时，在报警信号接点并联一个接点，有规律地闭合和断开，可以通过解析得到状况；或通过独立的校验信号线上传。具体可以状态好上传，或有问题上传，也可以通过远传密度在线监测上传，或把校验结果通过单独的校验信号线上传，或通过就地显示，就地报警，或通过无线上传，与智能手机联网上传。其通信方式为有线或无线，有线的通讯方式可以为RS232、RS485、CAN-BUS等工业总线、光纤以太网、4-20mA、Hart、IIC、SPI、Wire、同轴电缆、PLC电力载波等；无线通讯方式可以为2G/3G/4G/5G等、WIFI、蓝牙、Lora、Lorawan、Zigbee、红外、超声波、声波、卫星、光波、量子通信、声呐、传感器内置5G/NB-IOT通讯模块(如NB-IOT)等。总之，可以多重方式，多种组合，充分保证气体密度继电器的可靠性能。After the gas density relay body 1 completes the verification work, the gas density relay will make a judgment and can announce the test result. The method is flexible, specifically: 1) The gas density relay can be displayed on-site, such as display by indicator light, digital or LCD; 2) or the gas density relay can be uploaded through online remote communication, for example, it can be uploaded online Monitor the background of the system; 3) or upload to a specific terminal via wireless upload, such as wireless upload to a mobile phone; 4) or upload via other channels; 5) or upload abnormal results through an alarm signal line or a dedicated signal line; 6 ) Upload alone or bundled with other signals to upload. In short, after the gas density relay completes the online verification work, if there is an abnormality, it can automatically send an alarm, which can be uploaded to the remote end, or can be sent to a designated receiver, such as a mobile phone. Or, after the gas density relay completes the calibration work, if there is an abnormality, the intelligent control unit 7 can upload the remote (monitoring room, background monitoring platform, etc.) through the alarm contact signal of the gas density relay body 1, and can also display the notice on the spot . The simple version of the gas density relay online calibration can upload the abnormal results of the calibration through the alarm signal line. It can be uploaded according to a certain rule. For example, when there is an abnormality, connect a contact in parallel with the alarm signal contact to regularly close and open, and the status can be obtained through analysis; or upload through an independent check signal line. Specifically, it can be uploaded in good condition, or there is a problem, or it can be uploaded through remote transmission density online monitoring, or the verification result can be uploaded through a separate verification signal line, or through local display, local alarm, or through wireless upload, Online upload with smart phone. The communication method is wired or wireless. The wired communication method can be RS232, RS485, CAN-BUS and other industrial buses, optical fiber Ethernet, 4-20mA, Hart, IIC, SPI, Wire, coaxial cable, PLC power carrier, etc.; The wireless communication method can be 2G/3G/4G/5G, etc., WIFI, Bluetooth, Lora, Lorawan, Zigbee, infrared, ultrasonic, sound wave, satellite, light wave, quantum communication, sonar, sensor built-in 5G/NB-IOT communication module (such as NB-IOT) and so on. In short, multiple methods and multiple combinations can be used to fully ensure the reliable performance of the gas density relay.

其中，第一压力传感器2、第三压力传感器14的类型包括：绝对压力传感器、相对压力传感器、或绝对压力传感器和相对压力传感器，数量可以是若干个。压力传感器的形式可以是扩散硅压力传感器、MEMS压力传感器、芯片式压力传感器、线圈感应压力传感器(如巴登管附带感应线圈的压力测量传感器)、电阻压力传感器(如巴登管附带滑线电阻的压力测量传感器)；可以是模拟量压力传感器，也可以是数字量压力传感器。压力采集为压力传感器、压力变送器等各种感压元件，例如扩散硅式、蓝宝石式、压电式、应变片式(电阻应变片式、陶瓷应变片式)。Among them, the types of the first pressure sensor 2 and the third pressure sensor 14 include: an absolute pressure sensor, a relative pressure sensor, or an absolute pressure sensor and a relative pressure sensor, and the number may be several. The pressure sensor can be in the form of a diffused silicon pressure sensor, MEMS pressure sensor, chip pressure sensor, coil induction pressure sensor (such as a pressure measurement sensor with an induction coil in a Baden tube), a resistance pressure sensor (such as a slip wire resistance with a Baden tube) The pressure measurement sensor); it can be an analog pressure sensor or a digital pressure sensor. Pressure collection is a variety of pressure-sensitive components such as pressure sensors and pressure transmitters, such as diffused silicon type, sapphire type, piezoelectric type, strain gauge type (resistance strain gauge type, ceramic strain gauge type).

温度传感器3可以是：热电偶、热敏电阻、半导体式；可以是接触式和非接触式；可以为热电阻和热电偶。总之，温度采集可以用温度传感器、温度变送器等各种感温元件。The temperature sensor 3 can be a thermocouple, a thermistor, or a semiconductor type; it can be a contact type or a non-contact type; it can be a thermal resistance or a thermocouple. In short, temperature collection can use various temperature sensing elements such as temperature sensors and temperature transmitters.

阀12的控制可采用多种传动方式，如手动、电动、液动、气动、涡轮、电磁动、电磁液动、电液动、气液动、正齿轮、伞齿轮驱动等；可以在压力、温度或其它形式传感信号的作用下，按预定的要求动作，或者不依赖传感信号而进行简单的开启或关闭，阀门依靠驱动或自动机构使启闭件作升降、滑移、旋摆或回转运动，从而改变其流道面积的大小以实现其控制功能。所述阀12按驱动方式可以是自动阀类、动力驱动阀类和手动阀类。而自动阀可以包括：电磁驱动、电磁-液压驱动、电-液压驱动、涡轮驱动、正齿轮驱动、伞齿轮驱动、气动驱动、液压驱动、气体-液压驱动、电动驱动、电机(马达)驱动。所述阀可以是自动或手动、半自动。校验过程可以是自动完成的，也可以是通过人工配合半自动完成。阀通过自封阀、手动阀、或不拆卸阀与电气设备直接或间接连接，一体化或分开来连接。阀根据需要，可以为常开型、或常闭型，可以为单向型，或双向型。总之，通过电控阀实现开启或关闭气路。而电控阀采用的方式可以是：电磁阀，电控球阀，电动阀，电控比例阀等等。The valve 12 can be controlled by a variety of transmission modes, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic, electromagnetic hydraulic, electro-hydraulic, pneumatic-hydraulic, spur gear, bevel gear, etc.; it can be driven by pressure, Under the action of temperature or other forms of sensing signals, it will act according to the predetermined requirements, or simply open or close without relying on the sensing signal. The valve relies on the drive or automatic mechanism to make the opening and closing parts lift, slide, swing or swing. Revolving movement, thereby changing the size of the flow channel area to achieve its control function. According to the driving mode, the valve 12 can be an automatic valve, a power driven valve, and a manual valve. The automatic valve may include: electromagnetic drive, electromagnetic-hydraulic drive, electro-hydraulic drive, turbine drive, spur gear drive, bevel gear drive, pneumatic drive, hydraulic drive, gas-hydraulic drive, electric drive, and motor (motor) drive. The valve can be automatic or manual or semi-automatic. The verification process can be completed automatically or semi-automatically through manual cooperation. The valve is directly or indirectly connected to electrical equipment through self-sealing valves, manual valves, or non-disassembled valves, and is connected integrally or separately. The valve can be normally open, normally closed, one-way or two-way according to needs. In short, the air circuit can be opened or closed through the electronic control valve. The electric control valve can be used in the following ways: solenoid valve, electric control ball valve, electric valve, electric control proportional valve and so on.

所述在线校验接点信号采样单元6主要完成气体密度继电器本体1的接点信号采样。即在线校验接点信号采样单元6的基本要求或功能是：1)在校验时不影响电气设备的安全运行。就是在校验时，气体密度继电器本体1的接点信号发生动作时，不会影响电气设备的安全运行；2)气体密度继电器本体1的接点信号控制回路不影响气体密度继电器的性能，特别是不影响智控单元7的性能，不会使得气体密度继电器发生损坏、或影响测试工作。The online verification contact signal sampling unit 6 mainly completes the contact signal sampling of the gas density relay body 1. That is, the basic requirements or functions of the online verification contact signal sampling unit 6 are: 1) Do not affect the safe operation of electrical equipment during verification. That is, during calibration, when the contact signal of the gas density relay body 1 is activated, it will not affect the safe operation of electrical equipment; 2) The contact signal control circuit of the gas density relay body 1 does not affect the performance of the gas density relay, especially if it does not The performance of the intelligent control unit 7 is affected, and the gas density relay will not be damaged, or the test work will not be affected.

所述智控单元7的基本要求或功能是：通过智控单元7完成对阀12的控制、压力调节机构5的控制和信号采集，实现：能够检测到气体密度继电器本体1的接点信号发生动作时的压力值和温度值，换算成对应的20℃时的压力值P ₂₀(密度值)，即能够检测到气体密度继电器本体1的接点动作值P _D20，完成气体密度继电器本体1的校验工作；或者，能够直接检测到气体密度继电器本体1的接点信号发生动作时的密度值P _D20，完成气体密度继电器本体1的校验工作。 The basic requirement or function of the intelligent control unit 7 is: the intelligent control unit 7 completes the control of the valve 12, the control of the pressure adjustment mechanism 5, and signal acquisition, so as to realize that the contact signal of the gas density relay body 1 can be detected to act. Convert the pressure value and temperature value at the time to the corresponding pressure value P ₂₀ _{(density value) at 20℃, that is, the contact action value P D20} of the gas density relay body 1 can be detected, and the calibration of the gas density relay body 1 can be completed _{Or, it can directly detect the density value P D20} when the contact signal of the gas density relay body 1 acts, and complete the verification work of the gas density relay body 1.

当然，智控单元7还可以实现：测试数据存储；和/或测试数据导出；和/或测试数据可打印；和/或可与上位机进行数据通讯；和/或可输入模拟量、数字量信息。所述智控单元7还包括通讯模块，通过通讯模块实现远距离传输测试数据和/或校验结果等信息；当所述的气体密度继电器本体1的额定压力值输出信号时，智控单元7同时采集当时的密度值，完成气体密度继电器本体1的额定压力值校验。同时可以通过所述的气体密度继电器本体1的额定压力值的测试，完成气体密度继电器本体1、压力传感器2、温度传感器3之间的自校验工作，实现免维护。Of course, the intelligent control unit 7 can also realize: test data storage; and/or test data export; and/or test data can be printed; and/or can communicate with the host computer; and/or can input analog and digital quantities information. The intelligent control unit 7 also includes a communication module, which realizes remote transmission of test data and/or verification results and other information through the communication module; when the rated pressure value of the gas density relay body 1 outputs a signal, the intelligent control unit 7 At the same time, the current density value is collected to complete the verification of the rated pressure value of the gas density relay body 1. At the same time, the self-checking work between the gas density relay body 1, the pressure sensor 2, and the temperature sensor 3 can be completed through the test of the rated pressure value of the gas density relay body 1, and maintenance-free is realized.

电气设备，包括SF6气体电气设备、SF6混合气体电气设备、环保型气体电气设备、或其它绝缘气体电气设备。具体地，电气设备包括GIS、GIL、PASS、断路器、电流互感器、电压互感器、变压器、充气柜、环网柜等等。Electrical equipment, including SF6 gas electrical equipment, SF6 mixed gas electrical equipment, environmentally friendly gas electrical equipment, or other insulated gas electrical equipment. Specifically, electrical equipment includes GIS, GIL, PASS, circuit breakers, current transformers, voltage transformers, transformers, gas-filled cabinets, ring network cabinets, and so on.

气体密度继电器本体1、第一压力传感器2、温度传感器3、阀12、压力调节机构5、在线校验接点信号采样单元6、智控单元7和多通接头9之间可以根据需要进行灵活设置。例如气体密度继电器本体1、第一压力传感器2和温度传感器3可以设置在一起；或者阀12和压力调节机构5可以设置在一起。总之，它们间的设置可以灵活排列组合。The gas density relay body 1, the first pressure sensor 2, the temperature sensor 3, the valve 12, the pressure adjustment mechanism 5, the online calibration contact signal sampling unit 6, the intelligent control unit 7 and the multi-way connector 9 can be flexibly set according to needs . For example, the gas density relay body 1, the first pressure sensor 2 and the temperature sensor 3 may be arranged together; or the valve 12 and the pressure regulating mechanism 5 may be arranged together. In short, the settings between them can be flexibly arranged and combined.

气体密度继电器具有安全保护功能，具体就是低于设定值时，气体密度继电器就自动不再进行在线校验，而发出告示信号。例如，当设备的气体密度值小于设定值P _S时，就不校验了。例如：只有当设备的气体密度值≥(报警压力值+0.02MPa)时，才能进行在线校验。 The gas density relay has a safety protection function. Specifically, when the value is lower than the set value, the gas density relay will automatically no longer perform online verification and send out a notice signal. For example, when the gas density device than the set value P _S, not the check. For example: only when the gas density value of the equipment is greater than or equal to (alarm pressure value + 0.02MPa), the online calibration can be performed.

气体密度继电器可以根据设定的时间进行在线校验，也可以根据设定的温度(例如极限高温、高温、极限低温、低温、常温、20度等)进行在线校验。高温、低温、常温、20℃环境温度在线校验时，其误差判定要求是不一样的，例如20℃环境温度校验时，可以根据气体密度继电器的精度要求是1.0级、或1.6级，高温时可以是2.5级。具体可以根据温度的要求，按照相关标准实施。例如按照DL/T 259《六氟化硫气体密度继电器校验规程》中的4.8条温度补偿性能规定，每个温度值所对应的精度要求。The gas density relay can be checked online according to the set time, or according to the set temperature (such as extreme high temperature, high temperature, extreme low temperature, low temperature, normal temperature, 20 degrees, etc.). For online calibration of high temperature, low temperature, normal temperature, and 20℃ ambient temperature, the error judgment requirements are different. For example, when checking the 20℃ ambient temperature, the accuracy requirement of the gas density relay can be 1.0 or 1.6, high temperature Time can be 2.5 levels. Specifically, it can be implemented according to temperature requirements and related standards. For example, in accordance with the 4.8 temperature compensation performance regulations in DL/T 259 "Sulfur hexafluoride Gas Density Relay Calibration Regulations", each temperature value corresponds to the accuracy requirements.

气体密度继电器能够在不同的温度下，不同的时间段进行其误差性能的比较。即不同时期，相同温度范围内的比较，判定气体密度继电器、电气设备的性能。具有历史各个时期的比对、历史与现在的比对。The gas density relay can compare its error performance at different temperatures and time periods. That is to compare the performance of gas density relays and electrical equipment in different periods and within the same temperature range. It has the comparison of various periods of history, the comparison of history and the present.

气体密度继电器可以反复校验多次(例如2～3次)，根据每次的校验结果，计算其平均值。必要时，可以随时对气体密度继电器进行在线校验。The gas density relay can be calibrated multiple times (for example, 2 to 3 times), and the average value is calculated based on the results of each calibration. When necessary, the gas density relay can be checked online at any time.

气体密度继电器具有压力、温度测量及软件换算功能。在不影响电气设备安全运行的前提下，能够在线检测出气体密度继电器本体1的报警和/或闭锁接点动作值和/或返回值。当然报警和/或闭锁接点信号的返回值也可以根据要求不测试。同时，气体密度继电器还可以在线监测电气设备的气体密度值，和/或压力值，和/或温度值，并上传到目标设备实现在线监测。The gas density relay has the functions of pressure and temperature measurement and software conversion. On the premise of not affecting the safe operation of electrical equipment, the alarm and/or blocking contact action value and/or return value of the gas density relay body 1 can be detected online. Of course, the return value of the alarm and/or blocking contact signal can also not be tested as required. At the same time, the gas density relay can also monitor the gas density value, and/or pressure value, and/or temperature value of the electrical equipment online, and upload it to the target device for online monitoring.

实施例二：Embodiment two:

如图2所示，本发明实施例二提供的一种具有在线自校验功能的气体密度继电器(或气体密度监测装置)，包括：气体密度继电器本体1、第一压力传感器2、第三压力传感器14、温度传感器3、压力调节机构5、在线校验接点信号采样单元6、智控单元7、多通接头9和阀12。气体密度继电器本体1、压力传感器2、温度传感器3、在线校验接点信号采样单元6和智控单元7设置在多通接头9上；第三压力传感器14设置在第三密封气室G3内，或第三压力传感器14设置在第三密封气室G3上，与第三密封气室G3相连通。As shown in FIG. 2, the second embodiment of the present invention provides a gas density relay (or gas density monitoring device) with an online self-checking function, including: a gas density relay body 1, a first pressure sensor 2, a third pressure Sensor 14, temperature sensor 3, pressure adjustment mechanism 5, online verification contact signal sampling unit 6, intelligent control unit 7, multi-way connector 9 and valve 12. The gas density relay body 1, the pressure sensor 2, the temperature sensor 3, the online verification contact signal sampling unit 6 and the intelligent control unit 7 are arranged on the multi-way connector 9; the third pressure sensor 14 is arranged in the third sealed gas chamber G3, Or the third pressure sensor 14 is arranged on the third sealed gas chamber G3 and communicates with the third sealed gas chamber G3.

与实施例一有区别的是：The difference from the first embodiment is:

1)本实施例中的第一密封气室G1通过多通接头9与电气设备接头13相连通，即第一密封气室G1与电气设备的绝缘气体相连通。本实施例中的第二密封气室G2内充有密度值为P _20BC的标准补偿气体，即第二密封气室G2为温度补偿标准气室。 1) The first sealed gas chamber G1 in this embodiment is connected to the electrical equipment connector 13 through the multi-way joint 9, that is, the first sealed gas chamber G1 is connected to the insulating gas of the electrical equipment. In this embodiment, the second sealed gas chamber G2 is filled with _{a standard compensation gas with a density value of P 20BC} , that is, the second sealed gas chamber G2 is a temperature compensation standard gas chamber.

2)本实施例的压力调节机构5为一端开口的腔体51，所述腔体51内有活塞52，所述活塞52设有密封圈53，所述活塞52的一端连接有一个调节杆54，所述调节杆54的外端连接驱动部件55，所述活塞52的另一端伸入所述开口内，且与所述腔体51的内壁相接触，所述驱动部件55驱动所述调节杆54进而带动所述活塞52在所述腔体51内移动。所述驱动部件55包括、但不限于磁力驱动机构、电机、往复运动机构、卡诺循环机构、磁耦合推力机构、加热产生推力机构、电加热产生推力机构、化学反应产生推力机构、气动元件中的一种。在一种优选实施例中，压力调节机构5还包括密封件联结件58，密封件联结件58设置在所述腔体51和所述驱动部件55之间，使所述调节杆54穿过所述密封件联结件58连接到驱动部件55，确保整个压力调节机构5具有很好的密封性能。所述密封件联结件58包括、但不限于波纹管、气囊、密封圈中的一种。2) The pressure adjusting mechanism 5 of this embodiment is a cavity 51 with an open end, and a piston 52 is arranged in the cavity 51, the piston 52 is provided with a sealing ring 53, and an adjustment rod 54 is connected to one end of the piston 52 , The outer end of the adjusting rod 54 is connected to the driving member 55, the other end of the piston 52 extends into the opening and is in contact with the inner wall of the cavity 51, and the driving member 55 drives the adjusting rod 54 in turn drives the piston 52 to move in the cavity 51. The driving component 55 includes, but is not limited to, a magnetic drive mechanism, a motor, a reciprocating motion mechanism, a Carnot cycle mechanism, a magnetic coupling thrust mechanism, a heating generating thrust mechanism, an electric heating generating thrust mechanism, a chemical reaction generating thrust mechanism, and pneumatic components. Kind of. In a preferred embodiment, the pressure adjusting mechanism 5 further includes a sealing element coupling member 58 which is arranged between the cavity 51 and the driving member 55 so that the adjusting rod 54 passes through the The sealing member coupling member 58 is connected to the driving member 55 to ensure that the entire pressure regulating mechanism 5 has a good sealing performance. The sealing member coupling member 58 includes, but is not limited to, one of a bellows, an air bag, and a sealing ring.

实施例三：Embodiment three:

如图3所示，本发明实施例三提供的一种具有在线自校验功能的气体密度继电器(或气体密度监测装置)，包括：气体密度继电器本体1、第一压力传感器2、第三压力传感器14、温度传感器3、压力调节机构5、在线校验接点信号采样单元6、智控单元7、多通接头9和阀12。气体密度继电器本体1、压力传感器2、温度传感器3设置在多通接头9上；第三压力传感器14设置在第三密封气室G3内，或第三压力传感器14设置在第三密封气室G3上，与第三密封气室G3相连通。As shown in Figure 3, the third embodiment of the present invention provides a gas density relay (or gas density monitoring device) with an online self-checking function, including: a gas density relay body 1, a first pressure sensor 2, a third pressure Sensor 14, temperature sensor 3, pressure adjustment mechanism 5, online verification contact signal sampling unit 6, intelligent control unit 7, multi-way connector 9 and valve 12. The gas density relay body 1, the pressure sensor 2, and the temperature sensor 3 are arranged on the multi-way joint 9; the third pressure sensor 14 is arranged in the third sealed gas chamber G3, or the third pressure sensor 14 is arranged in the third sealed gas chamber G3 , Communicate with the third sealed gas chamber G3.

与实施例二有区别的是：The difference from the second embodiment is:

1)阀12、压力调节机构5分别独立地与第三密封气室G3相连通。1) The valve 12 and the pressure regulating mechanism 5 are respectively and independently communicated with the third sealed gas chamber G3.

2)本实施例的压力调节机构5主要由气囊51、驱动部件55组成。压力调节机构5根据智控单元7的控制，使得驱动部件55推动气囊51发生体积变化，进而完成第三密封气室G3的气体压力的升降。其中，在线校验接点信号采样单元6、智控单元7与压力调节机构5设置在一起。2) The pressure adjusting mechanism 5 of this embodiment is mainly composed of an airbag 51 and a driving component 55. According to the control of the intelligent control unit 7, the pressure adjusting mechanism 5 causes the driving component 55 to push the airbag 51 to change in volume, thereby completing the lifting and lowering of the gas pressure of the third sealed gas chamber G3. Among them, the online verification contact signal sampling unit 6, the intelligent control unit 7 and the pressure adjusting mechanism 5 are arranged together.

在另一种优选实施例中，所述压力调节机构5还可以为一电磁阀，电磁阀密封在一壳体内部。压力调节机构5根据智能处理器7的控制，使得电磁阀开启，发生压力变化，进而完成第三密封气室G3的气体压力的升降。In another preferred embodiment, the pressure regulating mechanism 5 can also be a solenoid valve, which is sealed inside a housing. According to the control of the intelligent processor 7, the pressure adjusting mechanism 5 causes the solenoid valve to open, and the pressure changes, thereby completing the lifting and lowering of the gas pressure in the third sealed gas chamber G3.

在另一种优选实施例中，所述压力调节机构5还可以由波纹管和驱动部件组成，波纹管与气体密度继电器本体1的第三密封气室G3密封连接在一起，组成一个可靠的密封腔体。压力调节机构5根据智能处理器7的控制，使得驱动部件推动波纹管发生体积变化，进而密封腔体发生体积变化，从而完成第三密封气室G3的气体压力的升降。In another preferred embodiment, the pressure adjusting mechanism 5 may also be composed of a bellows and a driving part. The bellows and the third sealed gas chamber G3 of the gas density relay body 1 are hermetically connected to form a reliable seal. Cavity. According to the control of the intelligent processor 7, the pressure adjusting mechanism 5 causes the drive component to push the bellows to change in volume, and then the sealed cavity to change in volume, thereby completing the lifting and lowering of the gas pressure in the third sealed gas chamber G3.

在另一种优选实施例中，所述压力调节机构5还可以由气室、加热元件、保温件组成，气室与气体密度继电器本体1的第三密封气室G3密封连接在一起，气室的外部(也可以是内部)带有加热元件，通过加热，导致温度的变化，进而完成第三密封气室G3的气体压力的升降。In another preferred embodiment, the pressure adjustment mechanism 5 may also be composed of an air chamber, a heating element, and a heat insulating member. The air chamber and the third sealed air chamber G3 of the gas density relay body 1 are hermetically connected together. The outside (or the inside) of the G3 is equipped with a heating element, which is heated to cause a temperature change, thereby completing the rise and fall of the gas pressure in the third sealed gas chamber G3.

当然，压力调节机构5还可以有多种其它形式，不限于上述所列举的，其它能够实现压力升降功能的机构也均涵盖在本申请的保护范围内。Of course, the pressure adjusting mechanism 5 may also have a variety of other forms, which are not limited to those listed above, and other mechanisms that can realize the pressure lifting function are also covered by the protection scope of the present application.

综上所述，本申请的压力调节机构5不是与气体密度继电器本体1或电气设备的SF6主气路相连通，而是与气体密度继电器本体1的第三密封气室G3相连通，通过压力调节机构5的作用，使得气体密度继电器本体1发生接点动作，接点动作通过在线校验接点信号采样单元6传递到智控单元7，智控单元7能够检测出气体密度继电器本体1发生接点动作，完成气体密度继电器本体1的接点信号动作值的校验工作，无须检修人员到现场校验，实现了对气体密度继电器的全寿命周期智能化管理：有问题才修理，没有问题就不要运维服务。本申请提高了电网的可靠性，大大降低其密封要求，提高了效率，降低了成本，提高了现场安装的方便性和灵活性，可以实现气体密度继电器的免维护，同时整个校验过程实现SF ₆ 气体零排放，符合环保规程要求。 To sum up, the pressure regulating mechanism 5 of the present application is not connected to the gas density relay body 1 or the SF6 main gas circuit of the electrical equipment, but is connected to the third sealed gas chamber G3 of the gas density relay body 1, through the pressure The function of the adjustment mechanism 5 makes the gas density relay body 1 contact action, and the contact action is transmitted to the intelligent control unit 7 through the online verification contact signal sampling unit 6. The intelligent control unit 7 can detect that the gas density relay body 1 has contact action. Complete the verification of the contact signal action value of the gas density relay body 1, without the need for maintenance personnel to verify on site, and realize the intelligent management of the life cycle of the gas density relay: repair only if there is a problem, and no operation and maintenance service if there is no problem . This application improves the reliability of the power grid, greatly reduces its sealing requirements, improves efficiency, reduces costs, and improves the convenience and flexibility of on-site installation. It can achieve maintenance-free gas density relays, and at the same time, the entire calibration process can achieve SF ₆ Zero gas emission, in line with the requirements of environmental protection regulations.

本申请进行了技术创新：压力调节机构5不是与气体密度继电器本体1或电气设备的SF6主气路相连通，从而大大提高了电网的可靠性，降低了其密封要求，以及能够大大降低制造成本，提高了现场安装的方便性和灵活性。This application has carried out a technical innovation: the pressure regulating mechanism 5 is not connected to the gas density relay body 1 or the SF6 main gas circuit of the electrical equipment, thereby greatly improving the reliability of the power grid, reducing its sealing requirements, and greatly reducing manufacturing costs , Improve the convenience and flexibility of on-site installation.

需要说明的是，一种具有在线自校验功能的气体密度继电器一般指的是其组成元件设计成一体结构；而气体密度监测装置一般指的是其组成元件设计成分体结构，灵活组成。所述气体密度继电器可以利用变电站原有的气体密度继电器进行技术改造升级。It should be noted that a gas density relay with on-line self-checking function generally refers to the design of its constituent elements into an integrated structure; and the gas density monitoring device generally refers to the design of its constituent elements into a body structure and flexible composition. The gas density relay can utilize the original gas density relay of the substation for technical transformation and upgrading.

以上对本发明的具体实施例进行了详细描述，但其只是作为范例，本发明并不限制于以上描述的具体实施例。对于本领域技术人员而言，任何对本发明进行的等同修改和替代也都在本发明的范畴之中。因此，在不脱离本发明的精神和范围下所作的均等变换和修改，都应涵盖在本发明的范围内。The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of the present invention should all fall within the scope of the present invention.

Claims

一种具有在线自校验功能的气体密度继电器，其特征在于，包括：气体密度继电器本体、第一压力传感器、第三压力传感器、温度传感器、压力调节机构、在线校验接点信号采样单元和智控单元；A gas density relay with online self-calibration function, which is characterized by comprising: a gas density relay body, a first pressure sensor, a third pressure sensor, a temperature sensor, a pressure adjustment mechanism, an online calibration contact signal sampling unit and a smart Control unit

所述气体密度继电器本体包括：外壳，以及外壳内与电气设备的绝缘气室连通的第一密封气室、充有标准补偿气体的第二密封气室，以及设有信号发生器和信号调节机构的第三气室；The gas density relay body includes: a shell, a first sealed gas chamber in the shell communicating with an insulating gas chamber of an electrical device, a second sealed gas chamber filled with a standard compensation gas, and a signal generator and a signal adjustment mechanism The third air chamber;

所述第一压力传感器与所述第一密封气室相连通；The first pressure sensor communicates with the first sealed air chamber;

所述第三压力传感器，与所述气体密度继电器本体的第三密封气室相连通；The third pressure sensor communicates with the third sealed gas chamber of the gas density relay body;

所述压力调节机构，设置在所述气体密度继电器本体外，所述压力调节机构的气路与所述第三密封气室相连通，被配置为调节所述第三密封气室的气体压力升降，使所述气体密度继电器本体发生接点信号动作；The pressure adjustment mechanism is arranged outside the body of the gas density relay, and the gas path of the pressure adjustment mechanism communicates with the third sealed gas chamber and is configured to adjust the gas pressure rise and fall of the third sealed gas chamber , To cause the gas density relay body to generate a contact signal action;

所述在线校验接点信号采样单元，与所述气体密度继电器本体的信号发生器相连接，被配置为采样所述气体密度继电器本体发生接点信号动作的接点信号；The online verification contact signal sampling unit is connected to the signal generator of the gas density relay body, and is configured to sample the contact signal of the gas density relay body that generates a contact signal action;

所述智控单元，分别与所述压力调节机构、第一压力传感器、第三压力传感器、温度传感器和在线校验接点信号采样单元相连接，被配置为完成所述压力调节机构的控制，压力值采集和温度值采集、和/或气体密度值采集，以及检测所述气体密度继电器本体的接点信号动作值和/或接点信号返回值；The intelligent control unit is respectively connected with the pressure adjustment mechanism, the first pressure sensor, the third pressure sensor, the temperature sensor and the online verification contact signal sampling unit, and is configured to complete the control of the pressure adjustment mechanism. Value collection and temperature value collection, and/or gas density value collection, and detection of the contact signal action value and/or contact signal return value of the gas density relay body;

其中，所述接点信号包括报警、和/或闭锁。Wherein, the contact signal includes alarm and/or lockout.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于，所述气体密度继电器本体包括：外壳、第一波纹管、第二波纹管、信号发生器、信号调节机构；其中，所述第一波纹管的第一开口端固定在所述外壳的内壁上，所述第一波纹管的第二开口端与第一密封件密封连接，所述第一波纹管的内壁、所述第一密封件、所述外壳的内壁共同围成所述第一密封气室，所述第一密封气室设有与电气设备的绝缘气体相连通的接口；所述第二波纹管的第一开口端与所述第一密封件密封连接，所述第二波纹管的第二开口端口通过第二密封件与所述外壳的内壁连接，所述第一波纹管的外壁、所述第一密封件、所述第二波纹管的外壁、所述第二密封件及所述外壳的内壁共同围成所述第二密封气室；所述第二波纹管的内壁、所述第二密封件及所述外壳的内壁共同围成第三密封气室，所述信号发生器和信号调节机构设置在所述第三密封气室内，所述信号调节机构与所述第一密封件连接，所述信号发生器对应所述信号调节机构设置。The gas density relay with online self-checking function according to claim 1, wherein the gas density relay body comprises: a housing, a first bellows, a second bellows, a signal generator, and a signal adjustment mechanism; Wherein, the first open end of the first bellows is fixed on the inner wall of the housing, the second open end of the first bellows is in sealing connection with the first sealing element, and the inner wall of the first bellows, The first sealing member and the inner wall of the housing jointly enclose the first sealed gas chamber, and the first sealed gas chamber is provided with an interface communicating with the insulating gas of the electrical equipment; the second bellows The first open end is in hermetically connected with the first seal, the second open port of the second bellows is connected with the inner wall of the housing through the second seal, the outer wall of the first bellows, the first A sealing member, the outer wall of the second bellows, the second sealing member, and the inner wall of the shell jointly enclose the second sealed air chamber; the inner wall of the second bellows, the second seal The inner wall of the housing and the housing together enclose a third sealed air chamber, the signal generator and the signal adjusting mechanism are arranged in the third sealed air chamber, and the signal adjusting mechanism is connected with the first sealing member, so The signal generator is arranged corresponding to the signal adjustment mechanism.
根据权利要求2所述的具有在线自校验功能的气体密度继电器，其特征在于：所述第一密封气室和所述第二密封气室的位置可互换，即所述第一波纹管的内壁、所述第一密封件、所述外壳的内壁共同围成所述第二密封气室；所述第一波纹管的外壁、所述第一密封件、所述第二波纹管的外壁、所述第二密封件及所述外壳的内壁共同围成所述第一密封气室，所述第一密封气室设有与电气设备的绝缘气体相连通的接口。The gas density relay with online self-checking function according to claim 2, wherein the positions of the first sealed gas chamber and the second sealed gas chamber are interchangeable, that is, the first bellows The inner wall of the first sealing element, the inner wall of the housing together enclose the second sealed air chamber; the outer wall of the first bellows, the first sealing element, and the outer wall of the second bellows , The second sealing member and the inner wall of the housing jointly enclose the first sealed gas chamber, and the first sealed gas chamber is provided with an interface communicating with the insulating gas of the electrical equipment.
根据权利要求2所述的具有在线自校验功能的气体密度继电器，其特征在于：所述第一波纹管的外径大于所述第二波纹管的外径；所述信号调节机构包括一移动杆，所述移动杆的一端伸入所述第二波纹管内，与所述第一密封件连接，并随第一波纹管的形变产生位移；所述移动杆的另一端伸出所述第二波纹管，固定连接一横杆，所述横杆设有调节螺钉，所述调节螺钉用于在移动杆的推动力下触动所述信号发生器。The gas density relay with online self-checking function according to claim 2, wherein the outer diameter of the first bellows is greater than the outer diameter of the second bellows; the signal adjustment mechanism includes a mobile Rod, one end of the moving rod extends into the second bellows, is connected with the first sealing member, and is displaced with the deformation of the first bellows; the other end of the moving rod extends out of the second bellows The corrugated tube is fixedly connected with a cross bar, the cross bar is provided with an adjusting screw, and the adjusting screw is used to touch the signal generator under the pushing force of the moving rod.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述第三压力传感器设置在所述第三密封气室内；或者，所述第三压力传感器设置在所述第三密封气室上，与所述第三密封气室的气路相连通。The gas density relay with online self-checking function according to claim 1, characterized in that: the third pressure sensor is arranged in the third sealed gas chamber; or, the third pressure sensor is arranged in the The third sealed gas chamber is connected with the gas path of the third sealed gas chamber.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述信号发生器包括微动开关或磁助式电接点，所述气体密度继电器本体通过所述信号发生器输出接点信号。The gas density relay with online self-checking function according to claim 1, wherein the signal generator includes a micro switch or a magnetic-assisted electric contact, and the gas density relay body passes through the signal generator Output contact signal.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述气体密度继电器还包括第二压力传感器，所述第二压力传感器与充有标准补偿气体的第一密封气室或第二密封气室相连通。The gas density relay with online self-checking function according to claim 1, characterized in that: the gas density relay further comprises a second pressure sensor, and the second pressure sensor is sealed with a first seal filled with a standard compensation gas. The air chamber or the second sealed air chamber is connected.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述智控单元获取所述第一压力传感器、温度传感器采集的气体密度值；或者，所述智控单元获取所述第一压力传感器采集的压力值和温度传感器采集的温度值，完成所述气体密度继电器对所监测的电气设备的气体密度的在线监测。The gas density relay with online self-checking function according to claim 1, wherein the intelligent control unit obtains the gas density values collected by the first pressure sensor and the temperature sensor; or, the intelligent control unit The pressure value collected by the first pressure sensor and the temperature value collected by the temperature sensor are acquired to complete the online monitoring of the gas density of the monitored electrical equipment by the gas density relay.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述气体密度继电器还包括阀，所述阀的一端设有与大气相连通的连接口，所述阀的另一端与所述压力调节机构或所述第三密封气室相连通。The gas density relay with online self-checking function according to claim 1, characterized in that: the gas density relay further comprises a valve, one end of the valve is provided with a connection port communicating with the atmosphere, and the valve The other end is communicated with the pressure adjusting mechanism or the third sealed air chamber.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述压力调节机构为一密闭气室，所述密闭气室的外部或内部设有加热元件、和/或制冷元件，通过所述加热元件加热、和/或通过所述制冷元件制冷，导致所述密闭气室内的气体的温度变化，进而完成所述第三密封气室的压力升降；或者，The gas density relay with online self-checking function according to claim 1, wherein the pressure adjusting mechanism is a closed gas chamber, and heating elements are provided outside or inside the closed gas chamber, and/or The refrigeration element is heated by the heating element and/or refrigerated by the refrigeration element, which causes the temperature of the gas in the airtight chamber to change, thereby completing the pressure rise and fall of the third airtight chamber; or,

所述压力调节机构为一端开口的腔体，所述腔体的另一端连通所述第三密封气室；所述腔体内有活塞，所述活塞的一端连接有一个调节杆，所述调节杆的外端连接驱动部件，所述活塞的另一端伸入所述开口内，且与所述腔体的内壁密封接触，所述驱动部件驱动所述调节杆进而带动所述活塞在所述腔体内移动；或者，The pressure adjusting mechanism is a cavity with one end open, and the other end of the cavity is connected to the third sealed air chamber; there is a piston in the cavity, and one end of the piston is connected with an adjusting rod, the adjusting rod The outer end of the piston is connected to a driving part, and the other end of the piston extends into the opening and is in sealing contact with the inner wall of the cavity. The driving part drives the adjusting rod to drive the piston in the cavity Move; or,

所述压力调节机构为一密闭气室，所述密闭气室的内部设有活塞，所述活塞与所述密闭气室的内壁密封接触，所述密闭气室的外面设有驱动部件，所述驱动部件通过电磁力推动所述活塞在所述腔体内移动；或者，The pressure adjustment mechanism is a closed air chamber, the inside of the closed air chamber is provided with a piston, the piston is in sealing contact with the inner wall of the closed air chamber, and the outside of the closed air chamber is provided with a driving part, the The driving component pushes the piston to move in the cavity by electromagnetic force; or,

所述压力调节机构为一端连接驱动部件的气囊，所述气囊在所述驱动部件的驱动下发生体积变化，所述气囊连通所述第三密封气室；或者，The pressure adjusting mechanism is an airbag with one end connected to a driving member, the airbag changes in volume under the driving of the driving member, and the airbag communicates with the third sealed air chamber; or,

所述压力调节机构为波纹管，所述波纹管的一端连通所述第三密封气室，所述波纹管的另一端在驱动部件的驱动下伸缩；或者，The pressure adjusting mechanism is a bellows, one end of the bellows is connected to the third sealed air chamber, and the other end of the bellows is expanded and contracted under the drive of a driving component; or,

所述压力调节机构为一放气阀，所述放气阀包括电磁阀或电动阀；或者，The pressure regulating mechanism is a purge valve, and the purge valve includes a solenoid valve or an electric valve; or,

所述压力调节机构为一压缩机；或者，The pressure regulating mechanism is a compressor; or,

所述压力调节机构为一泵，所述泵包括造压泵、增压泵、电动气泵、电磁气泵中的一种；或者，The pressure adjusting mechanism is a pump, and the pump includes one of a pressure generating pump, a boosting pump, an electric air pump, and an electromagnetic air pump; or,

所述压力调节机构为增压阀；The pressure regulating mechanism is a booster valve;

其中，所述驱动部件包括磁力驱动机构、电机、往复运动机构、卡诺循环机构、磁耦合推力机构、加热产生推力机构、电加热产生推力机构、化学反应产生推力机构、气动元件中的一种。Wherein, the driving component includes one of a magnetic drive mechanism, a motor, a reciprocating motion mechanism, a Carnot cycle mechanism, a magnetic coupling thrust mechanism, a heating generating thrust mechanism, an electric heating generating thrust mechanism, a chemical reaction generating thrust mechanism, and a pneumatic element. .
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述第一压力传感器包括至少一个压力传感器；或者，所述第一压力传感器为由压力传感器和温度传感器组成的气体密度变送器；或者，所述第一压力传感器为采用石英音叉技术的密度检测传感器。The gas density relay with online self-checking function according to claim 1, characterized in that: the first pressure sensor comprises at least one pressure sensor; or, the first pressure sensor is composed of a pressure sensor and a temperature sensor Or, the first pressure sensor is a density detection sensor using quartz tuning fork technology.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述第一压力传感器安装于所述气体密度继电器本体的气路上；所述温度传感器安装于所述气体密度继电器本体的气路上或气路外，或安装于所述气体密度继电器本体内，或安装于所述气体密度继电器本体外。The gas density relay with online self-checking function according to claim 1, wherein: the first pressure sensor is installed on the gas path of the gas density relay body; the temperature sensor is installed on the gas density The gas circuit or outside of the relay body, or installed in the gas density relay body, or installed outside the gas density relay body.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述在线校验接点信号采样单元包括隔离采样元件，所述隔离采样元件由气体密度继电器本体、或压力调节机构、或智控单元控制；在非校验状态时，所述在线校验接点信号采样单元通过隔离采样元件与气体密度继电器本体的接点信号在电路上相对隔离；在校验状态时，所述在线校验接点信号采样单元通过隔离采样元件切断气体密度继电器本体的接点信号控制回路，将所述气体密度继电器本体的接点与所述智控单元相连接；其中，隔离采样元件包括行程开关、微动开关、按钮、电动开关、位移开关、电磁继电器、光耦、可控硅中的一种。The gas density relay with on-line self-checking function according to claim 1, wherein the on-line checking contact signal sampling unit comprises an isolated sampling element, and the isolated sampling element is regulated by the gas density relay body or pressure. Mechanism or intelligent control unit; in the non-verification state, the online verification contact signal sampling unit is relatively isolated on the circuit by isolating the sampling element and the contact signal of the gas density relay body; in the verification state, the online verification contact signal sampling unit is relatively isolated on the circuit; The online check contact signal sampling unit cuts off the contact signal control circuit of the gas density relay body through the isolation sampling element, and connects the contact of the gas density relay body to the intelligent control unit; wherein the isolation sampling element includes a travel switch, a micro One of movable switches, buttons, electric switches, displacement switches, electromagnetic relays, optocouplers, and thyristors.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：所述气体密度继电器还包括多通接头，所述气体密度继电器本体、所述第一压力传感器设置在所述多通接头上；或者，所述压力调节机构设置在所述多通接头上；或者，所述气体密度继电器本体、第一压力传感器、所述压力调节机构设置在所述多通接头上；或者，所述在线校验接点信号采样单元、智控单元、温度传感器设置在所述多通接头上。The gas density relay with online self-checking function according to claim 1, characterized in that: the gas density relay further comprises a multi-way connector, and the gas density relay body and the first pressure sensor are arranged in the Or, the pressure adjusting mechanism is arranged on the multi-way connector; or, the gas density relay body, the first pressure sensor, and the pressure adjusting mechanism are arranged on the multi-way connector; or , The online verification contact signal sampling unit, the intelligent control unit, and the temperature sensor are arranged on the multi-way connector.
根据权利要求1所述的具有在线自校验功能的气体密度继电器，其特征在于：至少两个气体密度继电器本体、至少两个第一压力传感器、至少两个第三压力传感器、至少两个压力调节机构、至少两个在线校验接点信号采样单元和一个智控单元、一个温度传感器，完成所述气体密度继电器的在线校验；或者，The gas density relay with online self-checking function according to claim 1, characterized in that: at least two gas density relay bodies, at least two first pressure sensors, at least two third pressure sensors, and at least two pressure sensors. An adjustment mechanism, at least two online verification contact signal sampling units, an intelligent control unit, and a temperature sensor to complete the online verification of the gas density relay; or,

至少两个气体密度继电器本体、至少两个第一压力传感器、至少两个第三压力传感器、至少两个压力调节机构、至少两个温度传感器、至少两个在线校验接点信号采样单元和一个智控单元，完成所述气体密度继电器的在线校验。At least two gas density relay bodies, at least two first pressure sensors, at least two third pressure sensors, at least two pressure adjustment mechanisms, at least two temperature sensors, at least two online verification contact signal sampling units, and a smart The control unit completes the online verification of the gas density relay.
一种如权利要求1所述的具有在线自校验功能的气体密度继电器的校验方法，其特征在于，包括：A method for calibrating a gas density relay with online self-checking function according to claim 1, characterized in that it comprises:

正常工作状态时，气体密度继电器监控电气设备内的气体密度值，同时气体密度继电器通过第一压力传感器、温度传感器以及智控单元在线监测电气设备内的气体密度值；In normal working conditions, the gas density relay monitors the gas density value in the electrical equipment, and at the same time the gas density relay monitors the gas density value in the electrical equipment online through the first pressure sensor, the temperature sensor and the intelligent control unit;

气体密度继电器根据设定的校验时间或/和校验指令，以及气体密度值情况，在允许校验气体密度继电器本体的状况下：The gas density relay is based on the set calibration time or/and calibration command, as well as the gas density value, under the condition that the gas density relay body is allowed to be calibrated:

通过智控单元把在线校验接点信号采样单元调整到校验状态，在校验状态下，在线校验接点信号采样单元切断气体密度继电器本体的接点信号的控制回路，将气体密度继电器本体的接点连接至智控单元；The online calibration contact signal sampling unit is adjusted to the calibration state through the intelligent control unit. In the calibration state, the online calibration contact signal sampling unit cuts off the control circuit of the contact signal of the gas density relay body, and connects the contacts of the gas density relay body Connect to the intelligent control unit;

智控单元通过控制压力调节机构，调节所述第三密封气室的压力升降，使得气体密度继电器本体发生接点动作，接点动作通过在线校验接点信号采样单元传递到智控单元，智控单元能够检测出气体密度继电器本体发生接点动作；或者，The intelligent control unit adjusts the pressure rise and fall of the third sealed gas chamber by controlling the pressure adjustment mechanism, so that the contact action of the gas density relay body occurs. The contact action is transmitted to the intelligent control unit through the online verification contact signal sampling unit, and the intelligent control unit can The contact action of the gas density relay body is detected; or,

智控单元通过控制压力调节机构，调节所述第三密封气室的压力升降，使得气体密度继电器本体发生接点动作，接点动作通过在线校验接点信号采样单元传递到智控单元，智控单元能够检测出气体密度继电器本体发生接点动作，以及所述智控单元检测出所述第三密封气室的气体密度值，完成气体密度继电器本体的接点信号动作值的直接或间接校验工作；The intelligent control unit adjusts the pressure rise and fall of the third sealed gas chamber by controlling the pressure adjustment mechanism, so that the contact action of the gas density relay body occurs. The contact action is transmitted to the intelligent control unit through the online verification contact signal sampling unit, and the intelligent control unit can It is detected that the contact action of the gas density relay body occurs, and the intelligent control unit detects the gas density value of the third sealed gas chamber, and completes the direct or indirect verification work of the contact signal action value of the gas density relay body;

当所有的接点信号校验工作完成后，智控单元复原压力调节机构，并将在线校验接点信号采样单元调整到工作状态，气体密度继电器本体的接点信号的控制回路恢复运行正常工作状态。When all the contact signal verification work is completed, the intelligent control unit restores the pressure adjustment mechanism and adjusts the online verification contact signal sampling unit to the working state, and the contact signal control loop of the gas density relay body resumes its normal working state.
根据权利要求16所述的一种具有在线自校验功能的气体密度继电器的校验方法，其特征在于，包括：The calibration method of a gas density relay with online self-calibration function according to claim 16, characterized in that it comprises:

压力调节机构的气路，连通气体密度继电器本体的第三密封气室，从而将所述压力调节机构的气路与所述第三密封气室和设于第三密封气室内的第三压力传感器相连通；The gas path of the pressure regulating mechanism communicates with the third sealed gas chamber of the gas density relay body, thereby connecting the gas path of the pressure regulating mechanism with the third sealed gas chamber and the third pressure sensor arranged in the third sealed gas chamber Connected

正常工作状态时，气体密度继电器监控电气设备内的气体密度值，同时气体密度继电器通过第一压力传感器、温度传感器以及智控单元在线监测电气设备内的气体密度值；In normal working conditions, the gas density relay monitors the gas density value in the electrical equipment, and at the same time the gas density relay monitors the gas density value in the electrical equipment online through the first pressure sensor, the temperature sensor and the intelligent control unit;

气体密度继电器根据设定的校验时间或/和校验指令，以及气体密度值情况，在允许校验气体密度继电器本体的状况下：The gas density relay is based on the set calibration time or/and calibration command, as well as the gas density value, under the condition that the gas density relay body is allowed to be calibrated:

通过智控单元把在线校验接点信号采样单元调整到校验状态，在校验状态下，在线校验接点信号采样单元切断气体密度继电器本体的接点信号的控制回路，将气体密度继电器本体的接点连接至智控单元；The online calibration contact signal sampling unit is adjusted to the calibration state through the intelligent control unit. In the calibration state, the online calibration contact signal sampling unit cuts off the control circuit of the contact signal of the gas density relay body, and connects the contacts of the gas density relay body Connect to the intelligent control unit;

智控单元通过控制压力调节机构，调节所述第三密封气室的压力升降，使所述气体密度继电器本体发生接点信号动作；所述智控单元获取所述气体密度继电器本体发生接点信号动作或切换时、所述第一压力传感器采集的压力值P1和温度传感器采集的温度值T，以及所述第三压力传感器采集的压力值P3，并根据压力值P1和压力值P3计算得到等效气体压力值P；依照该等效气体压力值P，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验；或者， The intelligent control unit adjusts the pressure rise and fall of the third sealed gas chamber by controlling the pressure adjustment mechanism, so that the gas density relay body generates a contact signal action; the intelligent control unit obtains the gas density relay body to generate a contact signal action or When switching, the pressure value P1 collected by the first pressure sensor, the temperature value T collected by the temperature sensor, and the pressure value P3 collected by the third pressure sensor, and the equivalent gas is calculated according to the pressure value P1 and the pressure value P3 Pressure value P; According to the equivalent gas pressure value P, and according to the gas pressure-temperature characteristics, it is converted into a pressure value corresponding to 20°C, that is, the gas density value P ₂₀ , to complete the online calibration of the gas density relay; or,

所述智控单元获取所述气体密度继电器本体发生接点信号动作或切换时、所述第一压力传感器和温度传感器采集的气体密度值P1 ₂₀，以及所述第三压力传感器和温度传感器采集的气体密度值P3 ₂₀，并根据气体密度值P1 ₂₀和气体密度值P3 ₂₀计算得到气体密度值P ₂₀，完成所述气体密度继电器的在线校验； The intelligent control unit acquires operation when a contact signal to the bulk of the gas density relay or switch, the first pressure sensor and the temperature sensor gas density acquisition P1 _20, and the third pressure sensor and a temperature sensor to collect gas The density value P3 ₂₀ , and the gas density value P _{20 is} calculated according to the gas density value P1 ₂₀ _{and the gas density value P3 20} , and the online verification of the gas density relay is completed;

当所有的接点信号校验工作完成后，智控单元复原压力调节机构，并将在线校验接点信号采样单元调整到工作状态，气体密度继电器本体的接点信号的控制回路恢复运行正常工作状态。When all the contact signal verification work is completed, the intelligent control unit restores the pressure adjustment mechanism and adjusts the online verification contact signal sampling unit to the working state, and the contact signal control loop of the gas density relay body resumes its normal working state.
根据权利要求17所述的一种具有在线自校验功能的气体密度继电器的校验方法，其特征在于，包括：气体密度继电器本体发生接点信号动作或切换时，其等效气体压力值P＝P1-P3；依照该等效气体压力值P，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验；或者， The method for calibrating a gas density relay with online self-checking function according to claim 17, characterized in that it comprises: when the gas density relay body generates contact signal action or switching, its equivalent gas pressure value P= P1-P3; According to the equivalent gas pressure value P, and according to the gas pressure-temperature characteristics, it is converted into a pressure value corresponding to 20°C, that is, the gas density value P ₂₀ , to complete the online calibration of the gas density relay; or,

气体密度继电器本体发生接点信号动作或切换时，其等效气体压力值P＝P1-P3*K，其中K为预设系数；依照该等效气体压力值P、温度值T，以及按照气体压力-温度特性换算成为对应20℃的压力值，即气体密度值P ₂₀，完成所述气体密度继电器的在线校验。 When the gas density relay body generates contact signal action or switching, its equivalent gas pressure value P=P1-P3*K, where K is the preset coefficient; according to the equivalent gas pressure value P, temperature value T, and according to the gas pressure -The temperature characteristic is converted into a pressure value corresponding to 20°C, that is, the gas density value P ₂₀ , and the online calibration of the gas density relay is completed.
根据权利要求17所述的一种具有在线自校验功能的气体密度继电器的校验方法，其特征在于，包括：气体密度继电器本体发生接点信号动作或切换时，其气体密度值P ₂₀和气体密度值P1 ₂₀、P3 ₂₀之间的对应关系设计成数据表格，并根据气体密度值P1 ₂₀和气体密度值P3 ₂₀查询所述数据表格得到对应的气体密度值P ₂₀，完成所述气体密度继电器的在线校验；或者， One of the claim 17 having a check method Verification gas density relay function, characterized by comprising: an operation when the contact signal to the bulk gas density relay or switch, which is the gas density and gas P ₂₀ The corresponding relationship between the density values P1 ₂₀ and P3 ₂₀ is designed into a data table, and _{the data table is inquired according to the gas density value P1 20} and the gas density value P3 _{20 to} obtain the corresponding gas density value P ₂₀ , and the gas density relay is completed Online verification; or,

气体密度继电器本体发生接点信号动作或切换时，其气体密度值P ₂₀和气体压力值P1、P3以及温度值T之间的对应关系设计成数据表格，并根据气体压力值P1、P3以及温度值T查询所述数据表格得到对应的气体密度值P ₂₀，完成所述气体密度继电器的在线校验。 When the gas density relay body produces contact signal action or switching, _{the corresponding relationship between the gas density value P 20} and the gas pressure value P1, P3 and temperature value T is designed into a data table, and is based on the gas pressure value P1, P3 and temperature value T queries the data table to obtain the corresponding gas density value P ₂₀ , and completes the online verification of the gas density relay.
根据权利要求16所述的一种具有在线自校验功能的气体密度继电器的校验方法，其特征在于，包括：所述第一压力传感器和所述第三压力传感器为绝对压力型传感器；或者，所述第一压力传感器和所述第三压力传感器为相对压力型传感器；或者，所述第一压力传感器和所述第三压力传感器不是同类型传感器时，进行大气压的修正。The method for calibrating a gas density relay with online self-calibration function according to claim 16, characterized in that it comprises: the first pressure sensor and the third pressure sensor are absolute pressure sensors; or , The first pressure sensor and the third pressure sensor are relative pressure sensors; or, when the first pressure sensor and the third pressure sensor are not the same type of sensors, the atmospheric pressure correction is performed.