WO2012129898A1 - Smart multipoint centralized lubrication system having pipeline leak detection feature - Google Patents

Smart multipoint centralized lubrication system having pipeline leak detection feature Download PDF

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Publication number
WO2012129898A1
WO2012129898A1 PCT/CN2011/080059 CN2011080059W WO2012129898A1 WO 2012129898 A1 WO2012129898 A1 WO 2012129898A1 CN 2011080059 W CN2011080059 W CN 2011080059W WO 2012129898 A1 WO2012129898 A1 WO 2012129898A1
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Prior art keywords
oil
controller
sensor
lubrication system
pressure
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PCT/CN2011/080059
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French (fr)
Chinese (zh)
Inventor
王东升
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北京中冶华润科技发展有限公司
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Priority to US13/379,285 priority Critical patent/US8773608B2/en
Publication of WO2012129898A1 publication Critical patent/WO2012129898A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • F16N7/385—Central lubrication systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2260/00—Fail safe
    • F16N2260/02—Indicating
    • F16N2260/08—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/60—Pressure

Definitions

  • the invention relates to a lubrication system, in particular to an intelligent multi-point centralized lubrication system with a pipeline leak detection function.
  • the Chinese patent document CN2482622Y discloses an intelligent multi-point centralized lubrication device previously applied by the inventor, which mainly replaces the single-line and double-line lubrication methods commonly used in the industry, and concentrates oil supply through the oil station, and is supplied to the pipeline through the pipeline.
  • the oil supply controller is installed in front of each oil supply point, and the programmable controller automatically controls the oil supply controller to perform centralized lubrication by means of oil supply on demand, and can further program and monitor the working state through computer programming.
  • the automation and intelligence of the equipment lubrication are realized, and the working environment can be improved and the labor intensity can be reduced.
  • the system solves the problem of concentrated intelligent lubrication, it still has leakage problems from the oil supply controller to the oil supply point, which will directly affect the lubrication effect of the oil supply device. If it is found to be untimely, it will cause damage to the related equipment, thus causing significant loss.
  • the commonly used lubrication system monitors the output of the lubricating oil by monitoring the opening of the corresponding valve. When the valve is detected to be open, the system considers normal supply; when the valve is closed, it is considered that there is no oil supply.
  • the pipeline leak detection function of the lubrication system is particularly important.
  • the present invention provides an intelligent multi-point centralized lubrication system with a pipeline leak detection function, which can realize real-time monitoring of pipeline status and ensure the reliability of equipment oil supply while achieving centralized intelligent lubrication.
  • An intelligent multi-point centralized lubrication system with pipeline leak detection function comprising a gas station and a controller, wherein the oil station is connected in parallel to the oil controller through the pipeline to the lubrication points, and the controller circuit is connected to the oil controller and controlled
  • the oil supply controller is connected with a sensor 1 for detecting the open state thereof and a fuel supply line, and a back pressure valve is installed at a fuel supply point at the end of the oil supply line, and the back pressure valve can be set Opened under a constant pressure; a sensor 2 for detecting a pressure state is installed on the oil supply line, and both the sensor 1 and the sensor 2 are connected to the controller.
  • the oil supply controller is a solenoid valve, a pneumatic valve or a hydraulic valve.
  • the senor is a displacement sensor, a proximity switch or a limit switch for detecting a displacement signal of the spool.
  • the senor 2 is a pressure sensor.
  • back pressure valve and the oil supply point are detachably connected or integrated.
  • controller is composed of a field controller and a host computer
  • host computer may be a computer or a programmable controller for monitoring the working state of each oil supply point.
  • a pressure control valve is disposed on the oil discharge line of the oil station to control oil pressure.
  • a pressure sensor is disposed on the oil discharge line of the oil station for detecting oil pressure.
  • a filter is connected in series to the oil outlet pipe of the oil station.
  • the controller can be a PLC, a microcontroller or a DCS system.
  • the intelligent multi-point centralized lubrication system of the invention controls the oil supply controller (solenoid valve, pneumatic valve or hydraulic valve) to realize intelligent lubrication of each oil supply point by the controller, and further installs before the oil supply point Back pressure valve, when the oil supply controller is opened, the back pressure valve is opened to the oil supply point under the set pressure; when the oil supply controller is closed, the back pressure valve is closed and the oil supply line is kept corresponding
  • the pressure by detecting whether the corresponding pressure is maintained, can confirm whether there is leakage in the pipeline, thereby achieving the leak detection function; further controlling the lubrication system and correspondingly through the controller connected to the sensor and the oil supply controller Metering function.
  • FIG. 1 is a schematic view showing the structure of the first embodiment of the present invention
  • FIG. 2 is a schematic view showing the structure of the second embodiment of the present invention.
  • Fig. 3 is a structural schematic view of the back pressure valve of the embodiment.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 1 a structural schematic diagram of a specific embodiment of the intelligent multi-point centralized lubrication system of the present invention is shown.
  • the whole system includes a gas station 9 and a controller 7, and the oil station 9 supplies the oil controller to the lubrication points in parallel through the oil inlet line 8.
  • the solenoid controller 1 is selected for the oil controller, and the main controller 7 is connected to the solenoid valve 1 and The action is controlled, and the oil station 9 supplies oil to each fuel supply point through the oil inlet pipe 8, and a pressure control valve is disposed on the oil discharge pipe of the oil station to control the oil pressure.
  • a pressure sensor 10 is disposed on the oil discharge line of the oil station for detecting oil pressure, and a filter 11 is connected in series and a pressure control valve 12 is provided to control the oil pressure.
  • the controller 7 employs a PLC programmable controller to which a computer 13 is connected, which can be programmed and monitored by the computer 13 for its operational status.
  • the solenoid valve 1 is mounted with a displacement sensor 2 for detecting the open state of the solenoid valve 1, the outlet of the solenoid valve 1 is connected to the oil supply line 4, and the back pressure valve 5 is installed at the fuel supply point 6 at the end thereof.
  • the back pressure valve 5 is detachably coupled to or integrated with the oil supply point 6; the back pressure valve 5 can be opened at a set pressure; and the oil supply line 4 is mounted with a displacement for detecting a pressure state Sensor two 31.
  • the displacement sensor one, the displacement sensor two 31 and the solenoid valve 1 are electrically connected to the main controller 7, and the main controller 7 can receive information of the two sensors and is used to control the opening and closing of the solenoid valve 1.
  • the displacement sensor 1 detects the displacement signal, and converts the displacement signal into an electrical signal output, and the presence of the back pressure valve 5 can
  • a certain back pressure is formed in the oil supply pipeline 4, and the oil supply pipeline 4 is directly connected to the piston chamber of the displacement sensor 2, and when the solenoid valve 1 is supplied with oil, the back pressure valve 5 is at the end of the oil supply pipeline 4.
  • a certain back pressure is formed in the pipeline, and the back pressure pushes the piston in the piston chamber of the displacement sensor 31 to the right end of the cavity, and the displacement signal is converted into an electric signal and output to the controller 7.
  • the displacement sensor 1 completes the oil supply detection, when it has the electric signal output, it indicates that the oil supply is normal; the displacement sensor 2 31 completes the pipeline leakage detection, and when it has the electric signal output, it indicates the tube The road has no leakage; on the contrary, the oil supply pipeline leaks.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the displacement sensor 231 is correspondingly changed to the pressure sensor 32.
  • the specific structural schematic diagram is as shown in FIG. 2, and the pressure sensor 32 detects the pressure state in the oil supply pipeline 4, and the entire process of oil supply is performed.
  • the displacement sensor 1 completes the oil supply detection
  • the pressure sensor 32 completes the pipeline leakage detection, that is, when the displacement sensor 1 has an electric signal output, it indicates that the oil supply is normal, and vice versa, the oil supply is abnormal, that is, the electromagnetic valve 1 is blocked;
  • the back pressure valve 5 sets the pressure to 3Mpa.
  • the pressure of the pressure sensor is 3Mpa
  • the detection pressure is greater than 3Mpa
  • the back pressure valve 5 is faulty.
  • the detection pressure is less than 3Mpa, the oil supply is indicated.
  • the line 4 has leaked.
  • FIG 3 is a structural schematic view of the back pressure valve 5 used in the present invention, which is composed of a valve body 51, a valve core 52, and a spring 53.
  • the valve core 52 can be pushed against the spring 53.
  • the elastic force is such that the back pressure valve is opened and the corresponding back pressure can be achieved by changing the spring force of the spring 53.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipeline Systems (AREA)
  • Measuring Volume Flow (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A smart multipoint centralized lubrication system having a pipeline leak detection feature comprising an oil station (9) and a controller (7). A lubricating oil is distributed to each lubrication point from the oil station (9) via a pipeline (8) and a parallel-connected oil-supply controller. The controller (7) is circuit-connected to the oil-supply controller and controls the motions thereof. The oil-supply controller is connected to sensor one (2) for use in detecting if the oil-supply controller is in an opened state and to an oil-supply pipeline (4). A back pressure valve (5) is arranged at an oil-supplying point at the end of the oil-supply pipeline (4); the back pressure valve (5) is capable of opening at a set pressure. The oil-supply pipeline (4) has arranged thereon sensor two (31) for use in detecting the state of pressure. Both sensor one (2) and sensor two (31) are connected to the controller (7). The oil-supply controller is controlled by the controller (7), thus allowing smart lubrication of each lubrication point. By detecting if corresponding pressure preceding the oil-supply point is maintained, the presence of a leak can be determined, thereby allowing for the leak detection feature. The controller connected to the sensors and to an electromagnetic valve allows for the controlling of the lubrication system and for a corresponding measurement feature.

Description

具有管路检漏功能的智能多点式集中润滑*** Intelligent multi-point centralized lubrication system with pipeline leak detection function 技术领域Technical field
本发明涉及润滑***，尤其是一种具有管路检漏功能的智能多点式集中润滑***。 The invention relates to a lubrication system, in particular to an intelligent multi-point centralized lubrication system with a pipeline leak detection function.
背景技术Background technique
集中润滑广泛应用于冶金、矿山、建材等不同行业的机械设备润滑。中国专利文献CN2482622Y公开了本发明人早先申请的一种智能多点式集中润滑装置，主要代替行业惯常采用的单线式和双线式两种润滑方式，通过油站集中给油，经管道供至各供油点，在各供油点前安装给油控制器，采用可编程控制器自动控制给油控制器以按需供油的方式进行集中润滑，并可进一步通过计算机编程并监控工作状态，从而实现了设备润滑的自动化和智能化，可改善工作环境，减轻劳动强度。Centralized lubrication is widely used in the lubrication of machinery and equipment in different industries such as metallurgy, mining and building materials. The Chinese patent document CN2482622Y discloses an intelligent multi-point centralized lubrication device previously applied by the inventor, which mainly replaces the single-line and double-line lubrication methods commonly used in the industry, and concentrates oil supply through the oil station, and is supplied to the pipeline through the pipeline. For each oil supply point, the oil supply controller is installed in front of each oil supply point, and the programmable controller automatically controls the oil supply controller to perform centralized lubrication by means of oil supply on demand, and can further program and monitor the working state through computer programming. Thereby, the automation and intelligence of the equipment lubrication are realized, and the working environment can be improved and the labor intensity can be reduced.
该***虽然解决了集中智能润滑问题，但其仍存在给油控制器至供油点的泄露问题，会直接影响供油装置的润滑效果，如果发现不及时还会造成相关设备损坏，从而造成重大损失。常用的润滑***通过监测相应阀门的开启来监控润滑油的输出，当监测到阀门开启时，***认为正常供给；阀门关闭时认为没有供油。但对于工业现场来说，一旦阀后的管路存在泄漏，对于设备来说仍然不能可靠得到供油，依然存在损坏的风险。因此，润滑***的管路检漏功能尤为重要。Although the system solves the problem of concentrated intelligent lubrication, it still has leakage problems from the oil supply controller to the oil supply point, which will directly affect the lubrication effect of the oil supply device. If it is found to be untimely, it will cause damage to the related equipment, thus causing significant loss. The commonly used lubrication system monitors the output of the lubricating oil by monitoring the opening of the corresponding valve. When the valve is detected to be open, the system considers normal supply; when the valve is closed, it is considered that there is no oil supply. However, for the industrial site, once there is a leak in the pipeline behind the valve, the oil supply cannot be reliably obtained for the equipment, and there is still a risk of damage. Therefore, the pipeline leak detection function of the lubrication system is particularly important.
发明内容Summary of the invention
针对以上缺陷，本发明提供一种具有管路检漏功能的智能多点式集中润滑***，在实现集中智能润滑的同时可实现实时监控管路状态，确保设备供油的可靠性。In view of the above drawbacks, the present invention provides an intelligent multi-point centralized lubrication system with a pipeline leak detection function, which can realize real-time monitoring of pipeline status and ensure the reliability of equipment oil supply while achieving centralized intelligent lubrication.
为实现上述目的，本发明通过以下技术方案实现：To achieve the above object, the present invention is achieved by the following technical solutions:
一种具有管路检漏功能的智能多点式集中润滑***，包括油站和控制器，油站通过管道并联给油控制器至各润滑点，所述控制器电路连接给油控制器并控制其动作，所述给油控制器连接有用于检测其开启状态的传感器一和供油管路，在位于供油管路未端的供油点处安装有背压阀，该背压阀能够在设定压力下开启；所述供油管路上安装有用于检测压力状态的传感器二，所述传感器一和传感器二均接入控制器。An intelligent multi-point centralized lubrication system with pipeline leak detection function, comprising a gas station and a controller, wherein the oil station is connected in parallel to the oil controller through the pipeline to the lubrication points, and the controller circuit is connected to the oil controller and controlled In the action, the oil supply controller is connected with a sensor 1 for detecting the open state thereof and a fuel supply line, and a back pressure valve is installed at a fuel supply point at the end of the oil supply line, and the back pressure valve can be set Opened under a constant pressure; a sensor 2 for detecting a pressure state is installed on the oil supply line, and both the sensor 1 and the sensor 2 are connected to the controller.
优选的，所述给油控制器为电磁阀、气动阀或液动阀。Preferably, the oil supply controller is a solenoid valve, a pneumatic valve or a hydraulic valve.
优选的，所述传感器一为位移传感器、接近开关或限位开关，用于检测阀芯的位移信号。Preferably, the sensor is a displacement sensor, a proximity switch or a limit switch for detecting a displacement signal of the spool.
优选的，所述传感器二为压力传感器。Preferably, the sensor 2 is a pressure sensor.
进一步的，所述背压阀与供油点可拆卸地连接在一起或者集成为一体。Further, the back pressure valve and the oil supply point are detachably connected or integrated.
进一步的，所述控制器由现场控制器和上位机组成，所述上位机可以为计算机或可编程控制器，用于监控各供油点的工作状态。Further, the controller is composed of a field controller and a host computer, and the host computer may be a computer or a programmable controller for monitoring the working state of each oil supply point.
所述油站出油管路上设置有压力控制阀控制油压。A pressure control valve is disposed on the oil discharge line of the oil station to control oil pressure.
所述油站出油管路上设置有压力传感器用于检测油压。A pressure sensor is disposed on the oil discharge line of the oil station for detecting oil pressure.
所述油站出油管路上串接有过滤器。A filter is connected in series to the oil outlet pipe of the oil station.
所述控制器可以为PLC、单片机或DCS***。The controller can be a PLC, a microcontroller or a DCS system.
本发明所述的智能多点式集中润滑***，通过控制器控制给油控制器（电磁阀、气动阀或液动阀）实现各供油点的智能润滑，并进一步通过在供油点前安装背压阀，当给油控制器打开时，背压阀在设定压力下打开给供油点正常供油；当给油控制器关闭时，背压阀关闭并使供油管路保持相应的压力，通过检测相应的压力是否保持，可确认管路是否存在泄漏，从而达到检漏功能；进一步的通过与传感器和给油控制器连接的控制器，可实现对该润滑***的控制和相应的计量功能。The intelligent multi-point centralized lubrication system of the invention controls the oil supply controller (solenoid valve, pneumatic valve or hydraulic valve) to realize intelligent lubrication of each oil supply point by the controller, and further installs before the oil supply point Back pressure valve, when the oil supply controller is opened, the back pressure valve is opened to the oil supply point under the set pressure; when the oil supply controller is closed, the back pressure valve is closed and the oil supply line is kept corresponding The pressure, by detecting whether the corresponding pressure is maintained, can confirm whether there is leakage in the pipeline, thereby achieving the leak detection function; further controlling the lubrication system and correspondingly through the controller connected to the sensor and the oil supply controller Metering function.
附图说明DRAWINGS
下面根据实施例与附图对本发明作进一步详细说明。The present invention will be further described in detail below based on the embodiments and the accompanying drawings.
图1是本发明所述实施例一的结构原理示意图；1 is a schematic view showing the structure of the first embodiment of the present invention;
图2是本发明所述实施例二的结构原理示意图；2 is a schematic view showing the structure of the second embodiment of the present invention;
图3是实施例所述背压阀的结构原理图。Fig. 3 is a structural schematic view of the back pressure valve of the embodiment.
图中：In the picture:
1、电磁阀；2、位移传感器一；31、位移传感器二；32、压力传感器；1, solenoid valve; 2, displacement sensor one; 31, displacement sensor two; 32, pressure sensor;
4、供油管路；5、背压阀；6、供油点；7、控制器；8、进油管路；51、阀体；52、阀芯；53、弹簧；9、油站；10、压力传感器；11、过滤器；12、压力控制阀；13、计算机。4, oil supply pipeline; 5, back pressure valve; 6, oil supply point; 7, controller; 8, oil inlet pipeline; 51, valve body; 52, valve core; 53, spring; 9, oil station; , pressure sensor; 11, filter; 12, pressure control valve; 13, computer.
本发明的具体实施方式DETAILED DESCRIPTION OF THE INVENTION
实施例一：Embodiment 1:
如图1所示，给出了本发明所述智能多点式集中润滑***的一个具体实施例结构原理图。As shown in Fig. 1, a structural schematic diagram of a specific embodiment of the intelligent multi-point centralized lubrication system of the present invention is shown.
整个***包括油站9和控制器7，油站9通过进油管路8并联给油控制器至各润滑点，给油控制器选用电磁阀1，所述主控制器7电路连接电磁阀1并控制其动作，由油站9通过进油管路8为各供油点供油，所述油站出油管路上设置有压力控制阀控制油压。油站出油管路上设置有压力传感器10用于检测油压，串接有过滤器11并设置有压力控制阀12控制油压。The whole system includes a gas station 9 and a controller 7, and the oil station 9 supplies the oil controller to the lubrication points in parallel through the oil inlet line 8. The solenoid controller 1 is selected for the oil controller, and the main controller 7 is connected to the solenoid valve 1 and The action is controlled, and the oil station 9 supplies oil to each fuel supply point through the oil inlet pipe 8, and a pressure control valve is disposed on the oil discharge pipe of the oil station to control the oil pressure. A pressure sensor 10 is disposed on the oil discharge line of the oil station for detecting oil pressure, and a filter 11 is connected in series and a pressure control valve 12 is provided to control the oil pressure.
所述控制器7采用PLC可编程控制器，连接有计算机13，能够通过计算机13编程并监控其工作状态。The controller 7 employs a PLC programmable controller to which a computer 13 is connected, which can be programmed and monitored by the computer 13 for its operational status.
电磁阀1上安装有位移传感器一2，该传感器用于检测电磁阀1的开启状态，电磁阀1的出口连接供油管路4，在其未端的供油点6处安装有背压阀5，背压阀5与供油点6可拆卸地连接在一起或者集成为一体；该背压阀5能够在设定压力下开启；所述供油管路4上安装有用于检测压力状态的位移传感器二31。位移传感器一2、位移传感器二31和电磁阀1与主控制器7电连接，该主控制器7可接收两个传感器的信息并用来控制电磁阀1的启闭。The solenoid valve 1 is mounted with a displacement sensor 2 for detecting the open state of the solenoid valve 1, the outlet of the solenoid valve 1 is connected to the oil supply line 4, and the back pressure valve 5 is installed at the fuel supply point 6 at the end thereof. The back pressure valve 5 is detachably coupled to or integrated with the oil supply point 6; the back pressure valve 5 can be opened at a set pressure; and the oil supply line 4 is mounted with a displacement for detecting a pressure state Sensor two 31. The displacement sensor one, the displacement sensor two 31 and the solenoid valve 1 are electrically connected to the main controller 7, and the main controller 7 can receive information of the two sensors and is used to control the opening and closing of the solenoid valve 1.
其相应工作原理如下：The corresponding working principle is as follows:
当压力油从图中所示进油管路8进入后，分别向各个电磁阀1供油，当电磁铁得电后，推动电磁阀芯开启，压力油进入电磁阀下活塞腔，将活塞推到腔体最右端，使压力油通过上活塞腔进入供油管路4，此时压力油推动背压阀5进入供油点6的润滑部位，在此过程中位移传感器一2用于检测活塞运动，每当电磁阀1供油正常时，即下活塞腔活塞运动到腔体最右端时，位移传感器一2检测到位移信号，并将位移信号转换为电信号输出，背压阀5的存在能够使供油管路4内形成一定的背压，而供油管路4又直接与位移传感器二31的活塞腔相连，当电磁阀1供油时，在供油管路4末端背压阀5的作用下，使得管路内形成一定的背压，背压会将位移传感器二31活塞腔内的活塞推至腔体右端，此位移信号转换为电信号输出至控制器7。在供油的整个过程中，位移传感器一2完成供油检测，当其有电信号输出时，表明供油正常；位移传感器二31完成管路泄漏检测，当其有电信号输出时，表明管路无泄漏；反之，供油管路发生泄漏。When the pressure oil enters from the oil inlet pipe 8 shown in the figure, the oil is supplied to each of the solenoid valves 1 respectively. When the electromagnet is energized, the solenoid valve core is pushed to open, and the pressure oil enters the piston cavity under the solenoid valve, pushing the piston to the piston. The rightmost end of the cavity causes the pressurized oil to enter the oil supply line 4 through the upper piston chamber. At this time, the pressure oil pushes the back pressure valve 5 into the lubrication portion of the oil supply point 6, and in the process, the displacement sensor 2 is used to detect the piston movement. When the solenoid valve 1 supplies oil normally, that is, when the lower piston chamber piston moves to the rightmost end of the cavity, the displacement sensor 1 detects the displacement signal, and converts the displacement signal into an electrical signal output, and the presence of the back pressure valve 5 can A certain back pressure is formed in the oil supply pipeline 4, and the oil supply pipeline 4 is directly connected to the piston chamber of the displacement sensor 2, and when the solenoid valve 1 is supplied with oil, the back pressure valve 5 is at the end of the oil supply pipeline 4. Under the action, a certain back pressure is formed in the pipeline, and the back pressure pushes the piston in the piston chamber of the displacement sensor 31 to the right end of the cavity, and the displacement signal is converted into an electric signal and output to the controller 7. In the whole process of oil supply, the displacement sensor 1 completes the oil supply detection, when it has the electric signal output, it indicates that the oil supply is normal; the displacement sensor 2 31 completes the pipeline leakage detection, and when it has the electric signal output, it indicates the tube The road has no leakage; on the contrary, the oil supply pipeline leaks.
实施例二：Embodiment 2:
针对上述实施一，相应的将位移传感器二31改为压力传感器32，具体结构原理图如图2所求，由压力传感器32来检测供油管路4中的压力状态，在供油的整个过程中，位移传感器一2完成供油检测，压力传感器32完成管路泄漏检测，即当位移传感器一2有电信号输出时，表明供油正常，反之，供油不正常即电磁阀1堵塞；如背压阀5设定压力为3Mpa，当压力传感器的检测压力为3Mpa时，说明供油管路4无泄漏，当检测压力大于3Mpa说明背压阀5出现故障，当检测压力小于3Mpa说明供油管路4已发生泄漏。For the first implementation, the displacement sensor 231 is correspondingly changed to the pressure sensor 32. The specific structural schematic diagram is as shown in FIG. 2, and the pressure sensor 32 detects the pressure state in the oil supply pipeline 4, and the entire process of oil supply is performed. In the middle, the displacement sensor 1 completes the oil supply detection, and the pressure sensor 32 completes the pipeline leakage detection, that is, when the displacement sensor 1 has an electric signal output, it indicates that the oil supply is normal, and vice versa, the oil supply is abnormal, that is, the electromagnetic valve 1 is blocked; The back pressure valve 5 sets the pressure to 3Mpa. When the pressure of the pressure sensor is 3Mpa, it indicates that the oil supply line 4 has no leakage. When the detection pressure is greater than 3Mpa, the back pressure valve 5 is faulty. When the detection pressure is less than 3Mpa, the oil supply is indicated. The line 4 has leaked.
图3给出了本发明所采用的背压阀5的结构原理图，其由阀体51、阀芯52、弹簧53构成，当其进口具有一定压力时，可推动阀芯52克服弹簧53的弹力，从而使背压阀打开导通，相应背压大小可通过改变弹簧53的弹力来实现。3 is a structural schematic view of the back pressure valve 5 used in the present invention, which is composed of a valve body 51, a valve core 52, and a spring 53. When the inlet has a certain pressure, the valve core 52 can be pushed against the spring 53. The elastic force is such that the back pressure valve is opened and the corresponding back pressure can be achieved by changing the spring force of the spring 53.
以上结合附图详细描述了本发明的优选实施方式，但是，本发明并不限于上述实施方式中的具体细节，在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，这些简单变型均属于本发明的保护范围，例如，控制终端的形式和安装位置、给油控制器的驱动形式等。The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the embodiments described above, and various modifications may be made to the technical solutions of the present invention within the scope of the technical idea of the present invention. These simple variants are all within the scope of the invention, for example, the form and mounting position of the control terminal, the drive form of the fueling controller, and the like.

Claims (10)

  1. 一种具有管路检漏功能的智能多点式集中润滑***，包括油站和控制器，油站通过管道并联给油控制器至各润滑点，所述控制器电路连接给油控制器并控制其动作，其特征在于，所述给油控制器连接有用于检测其开启状态的传感器一和供油管路，在位于供油管路未端的供油点处安装有背压阀，该背压阀能够在设定压力下开启；所述供油管路上安装有用于检测压力状态的传感器二，所述传感器一和传感器二均接入控制器。 An intelligent multi-point centralized lubrication system with pipeline leak detection function, comprising a gas station and a controller, wherein the oil station is connected in parallel to the oil controller through the pipeline to the lubrication points, and the controller circuit is connected to the oil controller and controlled The action is characterized in that the oil supply controller is connected with a sensor 1 and an oil supply line for detecting the open state thereof, and a back pressure valve is installed at a fuel supply point at the end of the oil supply line, the back pressure The valve can be opened at a set pressure; a sensor 2 for detecting a pressure state is installed on the oil supply line, and both the sensor 1 and the sensor 2 are connected to the controller.
  2. 根据权利要求1所述的智能多点式集中润滑***，其特征在于：所述给油控制器为电磁阀、气动阀或液动阀。The intelligent multi-point centralized lubrication system according to claim 1, wherein the oil supply controller is a solenoid valve, a pneumatic valve or a hydraulic valve.
  3. 根据权利要求1所述的智能多点式集中润滑***，其特征在于：所述传感器一为位移传感器、接近开关或限位开关，用于检测阀芯的位移信号。The intelligent multi-point centralized lubrication system according to claim 1, wherein the sensor is a displacement sensor, a proximity switch or a limit switch for detecting a displacement signal of the spool.
  4. 根据权利要求1所述的智能多点式集中润滑***，其特征在于：所述传感器二为压力传感器。The intelligent multi-point centralized lubrication system according to claim 1, wherein the sensor 2 is a pressure sensor.
  5. 根据权利要求1所述的智能多点式集中润滑***，其特征在于，所述背压阀与供油点可拆卸地连接在一起或者集成为一体。The intelligent multi-point centralized lubrication system according to claim 1, wherein the back pressure valve is detachably coupled to or integrated with the oil supply point.
  6. 根据权利要求1至5所述的任一种智能多点式集中润滑***，其特征在于：所述控制器由现场控制器和上位机组成，所述上位机可以为计算机或可编程控制器，用于监控各供油点的工作状态。The intelligent multi-point centralized lubrication system according to any one of claims 1 to 5, wherein the controller is composed of a field controller and a host computer, and the upper computer can be a computer or a programmable controller. It is used to monitor the working status of each fuel supply point.
  7. 根据权利要求1至5所述的任一种智能多点式集中润滑***，其特征在于：所述油站出油管路上设置有压力控制阀控制油压。The intelligent multi-point centralized lubrication system according to any one of claims 1 to 5, characterized in that: the oil station outlet line is provided with a pressure control valve to control the oil pressure.
  8. 根据权利要求1至5所述的任一种智能多点式集中润滑***，其特征在于：所述油站出油管路上设置有压力传感器用于检测油压。The intelligent multi-point centralized lubrication system according to any one of claims 1 to 5, characterized in that: the oil station outlet line is provided with a pressure sensor for detecting the oil pressure.
  9. 根据权利要求1至5所述的任一种智能多点式集中润滑***，其特征在于：所述油站出油管路上串接有过滤器。The intelligent multi-point centralized lubrication system according to any one of claims 1 to 5, characterized in that: a filter is connected in series to the oil discharge pipe of the oil station.
  10. 根据权利要求1至5所述的任一种智能多点式集中润滑***，其特征在于：所述控制器可以为PLC、单片机或DCS***。The intelligent multi-point centralized lubrication system according to any one of claims 1 to 5, characterized in that the controller can be a PLC, a single chip microcomputer or a DCS system.
PCT/CN2011/080059 2011-03-31 2011-09-22 Smart multipoint centralized lubrication system having pipeline leak detection feature WO2012129898A1 (en)

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