WO2014090134A1 - Device, system and method for detecting air tightness of backup brake system of high-speed motor train unit - Google Patents

Device, system and method for detecting air tightness of backup brake system of high-speed motor train unit Download PDF

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Publication number
WO2014090134A1
WO2014090134A1 PCT/CN2013/088956 CN2013088956W WO2014090134A1 WO 2014090134 A1 WO2014090134 A1 WO 2014090134A1 CN 2013088956 W CN2013088956 W CN 2013088956W WO 2014090134 A1 WO2014090134 A1 WO 2014090134A1
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Prior art keywords
outlet
inlet
pressure
valve
detection
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PCT/CN2013/088956
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French (fr)
Chinese (zh)
Inventor
单亚男
李志国
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唐山轨道客车有限责任公司
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Publication of WO2014090134A1 publication Critical patent/WO2014090134A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds

Definitions

  • the invention relates to a high-speed EMU detection technology, in particular to a gas-tightness detection device, system and method for a high-speed EMU standby brake system. Background technique
  • the method of airtightness detection of the high-speed EMU standby braking system is to use the entire standby braking system as one or several detection points in the bicycle airtightness test, and other valves in the vehicle air system. Check the air cylinder, piping, pipe joints and other related components to verify whether each test item is leaking.
  • the existing detection method can only detect the leakage point of the module level, and the replacement or overhaul of the module level will inevitably result in the overhaul period. Long and costly conditions. Therefore, the existing method for detecting the airtightness of the standby brake system of the high-speed EMU has the problems of cumbersome maintenance, low efficiency, poor accuracy, and high cost.
  • the invention provides a gas tightness detecting device, system and method for a high-speed EMU standby braking system, which simplifies the detecting process, improves the testing efficiency, improves the detection accuracy, and reduces the testing cost.
  • the invention provides a gas tightness detecting device for a high-speed EMU standby braking system, comprising: a pressure gauge;
  • the invention provides a high-speed EMU standby braking system airtightness detecting system, comprising a braking system and a high-speed EMU standby braking system airtightness detecting device provided by the invention; the braking system comprises high and low voltage control a system and an external component, the high and low pressure control system including a compressed air inlet and outlet;
  • One of the detecting means is provided with a port of the cut-off switch connected to the external element, and the other port is connected to the compressed air inlet and outlet.
  • the invention provides a gas tightness detecting method for a high-speed EMU standby braking system, and detects the air-tightness detecting system of the high-speed EMU standby braking system provided by the present invention, comprising: passing the detecting under the pressure holding state The device detects a first pressure value of the compressed air inlet and outlet;
  • the airtightness of each component of the high and low voltage control system is judged.
  • the invention provides a airtightness detecting method for a high-speed EMU standby braking system, and detects the air-tightness detecting system of the high-speed EMU standby braking system provided by the present invention, comprising: dialing the driver brake valve to the lock Stopping the gear position to intercept the air path between the a outlet and the b inlet, and after inflating through the main air duct for a period of time, respectively detecting the pressure values at the a outlet, the d outlet, and the e inlet;
  • Calculating the 60-second pressure drop values at the a, d, and e inlets are P al , P dl , and P el , respectively;
  • the airtightness detecting device for the high-speed EMU standby braking system provided by the present invention has two ports connected to the second end of the connecting pipe because the first end of the connecting pipe is connected with the pressure gauge. And at least one of the ports is provided with a cut-off switch. When it is required to detect the airtightness of a single component in the module, the port with the cut-off switch can be connected to the external component, and the other port is connected to the compressed air inlet and outlet of the module.
  • FIG. 1 is a schematic structural diagram of a gas tightness detecting device for a high-speed EMU standby braking system according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a gas tightness detecting system for a high-speed EMU standby braking system according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for detecting airtightness of a high-speed EMU standby braking system according to an embodiment of the present invention. detailed description
  • an embodiment of the present invention provides a gas tightness detecting device for a high-speed EMU standby braking system, including: a pressure gauge 101; a connecting pipe 102, the first end of the connecting pipe 102 is connected to the pressure gauge 101, The second end of the connecting tube 102 is provided with two ports, and at least one of the ports is provided with a cut-off switch 103.
  • the port of the detecting device provided with the cut-off switch 103 can be connected to the external component, and the other port is connected to the compressed air inlet and outlet of the module, in the pressure holding state.
  • the initial pressure value of the compressed air inlet and outlet is read out by the pressure gauge 101, and the cutoff switch 103 of the port connecting the detecting device and the external component of the module is closed, and the port of the compressed air inlet and outlet of the connecting module remains in communication state, after unit time
  • the pressure value after the unit time of the compressed air inlet and outlet is read out by the pressure gauge 101, and the initial pressure value and the pressure value after the unit time are subtracted to obtain a pressure drop value per unit time of the compressed air inlet and outlet, and the module can be judged according to the pressure drop value.
  • an embodiment of the present invention provides a airtightness detection system for a high-speed EMU standby brake system, including a brake system and a gas-tightness of a high-speed EMU standby brake system according to an embodiment of the present invention.
  • the braking system includes a high and low voltage control system 201 and an external component, the high and low voltage control system 201 includes a compressed air inlet and outlet; one of the detecting devices is provided with a port of the shutoff switch 103 and the external The components are connected and the other port is connected to the compressed air inlet and outlet.
  • the port of the detecting device provided with the cutoff switch 103 can be connected to the external component, and the other port is connected to the high and low voltage control system 201.
  • the compressed air inlet and outlet, the initial pressure value of the compressed air inlet and outlet is read out by the pressure gauge 101 under the pressure holding state, and the cutoff switch 103 of the port connecting the detecting device and the external component is closed, and the port connecting the compressed air inlet and outlet remains in communication state.
  • the pressure value after the unit time of the compressed air inlet and outlet is read out by the pressure gauge 101, and the initial pressure value and the pressure value after the unit time are subtracted, and the pressure drop value per unit time of the compressed air inlet and outlet is obtained, according to the pressure drop.
  • the value determines the air tightness of the individual components within the high and low voltage control system 201. Thereby, the airtightness detection of the individual components in the high and low voltage control system 201 can be realized, thereby simplifying the detection process, improving the detection efficiency, improving the detection accuracy, and reducing the detection cost.
  • the high and low pressure control system 201 may further include a pressure reducing valve 202, a first check valve 203, a solenoid valve 204, a detecting sleeve 205, a relay valve 206, a piston valve 207, and a second check.
  • the valve 208, the compressed air inlet and outlet may include an outlet 209, a b inlet 210, a c inlet 211, a d outlet 212, and an e inlet 213, wherein the pressure reducing valve is connected between the e inlet 213 and the a outlet 209 202, the first check valve 203 and the electromagnetic valve 204 are sequentially connected between the a outlet 209 and the d outlet 212.
  • the detection sleeve 205 is sequentially connected between the b inlet 210 and the d outlet 212.
  • the relay valve 206 and the piston valve 207 are connected to the second check valve 208 between the b inlet 210 and the c inlet 211, and the c inlet 211 is connected to the control end of the piston valve 207, the e inlet 213 is connected to the regulating end of the relay valve 206;
  • the external component may include a ball valve 301, a driver brake valve 302 and a pressure accumulating tank 303, which are sequentially connected between the a outlet 209 and the b inlet 210, the ball valve 301 is also coupled between the a outlet 209 and the inlet 211;
  • the outer member may further include a main duct 304 and a brake pipe 305, the main air duct 304 is connected to the e inlet 213, and the brake pipe 305 is connected to d Exit 212.
  • the pressure drop value per unit time of the compressed air inlet and outlet can be obtained by the detecting device connected to the compressed air inlet and outlet, so that the pressure reducing valve 202, the first check valve 203, the electromagnetic valve 204, and the detecting sleeve 205 can be The airtightness of the relay valve 206, the piston valve 207, and the second check valve 208 is judged. Since the external components such as the driver brake valve 302, the ball valve 301, and the accumulator tank 303 are installed in a prominent position in the vehicle, it is only necessary to check whether the external components are leaked by using a conventional bubble method, and the airtightness of the external components. Detection can be performed first to ensure the accuracy of individual component detection within the high and low voltage control system 201.
  • the high-speed EMU standby braking system airtightness detecting system includes five said detecting devices, which are respectively disposed at the a-outlet 209, b-inlet 210, c-inlet 211, d
  • a pressure measuring device is connected to the detecting sleeve 205 for measuring the pressure value of the detecting sleeve 205.
  • an embodiment of the present invention provides a method for detecting air tightness of a standby brake system of a high-speed EMU, and detecting air tightness of a standby brake system of a high-speed EMU according to any embodiment of the present invention.
  • the system performs testing, including:
  • Step S001 detecting, by the detecting device, a first pressure value of the compressed air inlet and outlet in a pressure holding state
  • Step S002 closing the cut-off switch 103 at the port of the detecting device connected to the external component, the other port of the detecting device is still in a connected state, and after the unit time, detecting the compression by the detecting device a second pressure value of the air inlet and outlet;
  • Step S003 subtracting the first pressure value and the second pressure value to obtain a pressure drop value per unit time of the compressed air inlet and outlet;
  • Step S004 determining the airtightness of each component of the high and low voltage control system 201 based on the voltage drop value.
  • the airtightness detection of each component in the high and low voltage control system 201 can be realized, thereby simplifying the detection process, improving the detection efficiency, improving the detection accuracy, and reducing the detection cost.
  • an embodiment of the present invention provides a method for detecting air tightness of a standby brake system of a high-speed EMU, and detecting a hermeticity detection system for a standby brake system of a high-speed EMU according to an embodiment of the present invention.
  • the airtightness of the pressure reducing valve 202 is first detected, The body steps are:
  • Step S101 the driver brake valve 302 is turned to the lock gear position to intercept the air path between the a outlet 209 and the b inlet 210, and after being inflated through the main air duct 304 for a period of time, respectively detecting the a pressure value at outlet 209, d outlet 212 and e inlet 213;
  • the air flow in the main duct 304 flows to the piston valve 207 through the e inlet 213, the pressure reducing valve 202 flow, the a outlet 209, the ball valve 301, and the c inlet 211.
  • the piston valve 207 is opened, and the air flow in the main air duct 304 flows through the e inlet 213, the pressure reducing valve 202, the first check valve 203, and the solenoid valve 204 to the d outlet 212, and the air flow in the main air duct 304 passes.
  • the e inlet 213 and the relay valve 206 flow to the d outlet 212.
  • the a outlet 209, the d outlet 212, and the e inlet 213 reach a pressure holding state, and the a outlet 209 is detected respectively. , d outlet 212 and e inlet 213 pressure values.
  • Step S102 closing the cutoff switch 103 at the port connected to the external component of the detecting device connected at the a outlet 209, the d outlet 212 and the e inlet 213, opening the ball valve 301 to cut off the electromagnetic using the opposite principle of the control logic Valve 204, after 60 seconds, respectively detecting the pressure values at the a outlet 209, the d outlet 212 and the inlet 213;
  • Step S103 calculating the 60-second voltage drop values at the a outlet 209, the d outlet 212, and the e inlet 213 are respectively P al , ? ⁇ And! ⁇ ;
  • Step S104 at this time, whether the airtightness of the pressure reducing valve 202 is good affects the 60 second pressure drop value of the a outlet 209 and the e inlet 213, and whether the airtightness of the electromagnetic valve 204 is good or not is 60 for the d outlet 212.
  • the second pressure drop has an influence. Whether the airtightness of the relay valve 206 is good will affect the 60 second pressure drop value of the d outlet 212. Therefore, when P al 5KPa and P el 5KPa, the pressure reducing valve is proved. 202 is airtight, otherwise the pressure reducing valve 202 needs to be repaired or replaced.
  • the airtightness of the first check valve 203 and the electromagnetic valve 204 is detected.
  • Step S105 opening the cutoff switch 103 at the port connected to the external component of the detecting device connected at the a outlet 209, the d outlet 212 and the e inlet 213, closing the ball valve 301 to open the said rule by the opposite principle of the control logic
  • the solenoid valve 204 after being inflated through the main air duct 304 for a period of time, respectively detects the pressure values at the a outlet 209 and the outlet 212 of the d; After the ball valve 301 is closed and the solenoid valve 204 is opened by the opposite principle of the control logic, the air flow in the main air duct 304 flows through the e inlet 213, the pressure reducing valve 202, the first check valve 203, and the solenoid valve 204 to the d outlet 212.
  • the airflow in the main air duct 304 flows through the e inlet 213 and the pressure reducing valve 202 to the a outlet 209.
  • the a outlet 209 and the d outlet 212 reach a pressure holding state, and are respectively detected.
  • the pressure values at the a outlet 209 and the d outlet 212 are respectively detected.
  • Step S106 the cut-off switch 103 at the port connected to the external component of the detecting device connected at the a outlet 209, the d outlet 212 and the e-entry 213 is closed, and after 60 seconds, the a-outlet 209 and the d-out are respectively detected.
  • Step S107 calculating a 60-second voltage drop value at the a outlet 209 and the d outlet 212 as P a2 and P d2, respectively ;
  • Step S108 at this time, whether the airtightness of the electromagnetic valve 204 is good or not affects the 60-second pressure drop value of the a-outlet 209 and the d-outlet 212, and whether the airtightness of the first check valve 203 is good will be the a-outlet 209. And the 60-second pressure drop value of the d outlet 212 has an influence. Therefore, when P dl O. lKPa and P a2 5KPa and P d2 5KPa, it is proved that the solenoid valve 204 is airtight, otherwise the solenoid valve 204 is required. The inspection or replacement is performed; when P a2 5 KPa and P d2 5 KPa, it is proved that the first check valve 203 is airtight, otherwise the first check valve 203 needs to be repaired or replaced.
  • the airtightness of the second check valve 208 and the piston valve 207 is detected in the case where it is determined that the pressure reducing valve 202, the electromagnetic valve 204, and the first check valve 203 are airtight.
  • the specific steps are:
  • Step S109 opening the cutoff switch 103 at the port connected to the external component of the detecting device connected at the a outlet 209, the d outlet 212 and the e inlet 213, hitting the opening valve 301 and driving the driver brake valve 302
  • the air charging position to connect the air path between the a outlet 209 and the b inlet 210, after being inflated through the main air duct 304 for a period of time, respectively detecting the b inlet 210, the c inlet 211 and the d outlet 212 Pressure value, and the pressure value of the detection sleeve 205 is measured by the pressure measuring device;
  • the flow of the air in the main duct 304 through the e inlet 213, the pressure reducing valve 202, the a outlet 209, the ball valve 301 and the c inlet 211 to the control of the piston valve 207 End the air flow in the main duct 304 passes through the e inlet 213, the pressure reducing valve
  • the 202 flow, a outlet 209, the ball valve 301, the driver brake valve 302, the b inlet 210, and the second check valve 208 flow to the control end of the piston valve 207, opening the piston valve 207, and the air flow in the main air duct 304 passes through the e
  • the inlet 213, the pressure reducing valve 202 flow, the a outlet 209, the ball valve 301, the driver brake valve 302, the b inlet 210, the detection sleeve 205, the relay valve 206, and the piston valve 207 flow to the d outlet 212, at the main duct
  • b inlet 210, c inlet 211, d outlet 212, and detection sleeve 205 reach a pressure holding state, at which time the b inlet 210, c inlet 211, d outlet 212, and detection sleeve 205 are detected, respectively.
  • the pressure value at the place is the pressure value at the place.
  • Step S110 closing the cut-off switch 103 at the port connected to the external component of the detecting device at the b inlet 210, the c inlet 211 and the d outlet 212, at which time the piston valve 207 is closed, 60 seconds later, Detecting pressure values at the b inlet 210, the c inlet 211, and the d outlet 212, respectively, and measuring the pressure value of the detection sleeve 205 by the pressure measuring device;
  • Step S111 calculating a 60-second voltage drop value of P b3 at the b inlet 210, the c inlet 211, and the d outlet 212. 3 and P d3 ; calculating the 60 second pressure drop value of the test sleeve 205
  • Step S112 at this time, whether the airtightness of the piston valve 207 is good or not affects the 60-second pressure drop value of the c inlet 211 and the d outlet 212, and whether the airtightness of the second check valve 208 is good will be the c inlet 211.
  • the 60 second pressure drop value has an influence. Whether the airtightness of the detecting sleeve 205 is good will affect the 60 second pressure drop value of the b inlet 210, and whether the airtightness of the relay valve 206 is good will be 60 for the b inlet 210.
  • the second pressure drop has an influence.
  • the detection sleeve 205 and The airtightness of the relay valve 206 is detected, and the specific steps are as follows:
  • Step S113 opening the cut-off switch 103 at the port connected to the external component of the detecting device connected at the b inlet 210, the c inlet 211 and the d outlet 212, after being inflated through the main air duct 304 for a period of time,
  • the pressure values at the b inlet 210 and the d outlet 212 are respectively detected, and the pressure value of the detection sleeve 205 is measured by the pressure measuring device;
  • the air flow in the main air duct 304 passes through the e inlet 213, the pressure reducing valve 202 stream, a exit 209,
  • the ball valve 301 and the c inlet 211 flow to the control end of the piston valve 207, and the air flow in the main air duct 304 passes through the e inlet 213, the pressure reducing valve 202 flow, the a outlet 209, the ball valve 301, the driver brake valve 302, the b inlet 210, and
  • the second check valve 208 flows to the control end of the piston valve
  • the air flow in the main air duct 304 passes through the e inlet 213, the pressure reducing valve 202, the a outlet 209, the ball valve 301, and the driver brake valve. 302, b inlet 210, detection sleeve 205, relay valve 206, and piston valve 207 flow to d outlet 212. After the main air duct 304 is inflated for a period of time, b inlet 210 and d outlet 212 reach a pressure holding state. The pressure values at the b inlet 210, the d outlet 212, and the detection sleeve 205 are detected, respectively.
  • Step S114 closing the cutoff switch 103 at the port of the detecting device connected to the b inlet 210 and the d outlet 212 connected to the external component, at which time the piston valve 207 is still open, and after 60 seconds, respectively detecting a pressure value at the b inlet 210 and the d outlet 212, and the pressure value of the detection sleeve 205 is measured by the pressure measuring device;
  • Step S115 calculating a 60-second pressure drop value of P b4 and P d4 at the b inlet 210 and the d outlet 212 ; calculating a 60-second voltage drop value of the detection sleeve 205
  • Step S116 at this time, whether the airtightness of the detecting sleeve 205 is good will affect the 60-second pressure drop value of the b inlet 210, and whether the airtightness of the relay valve 206 is good will be the b inlet 210 and the d outlet 212.
  • the 60-second pressure drop value has an influence. Therefore, when P b3 -P rl 0.01 KPa and P b4 -P ⁇ 0.01 KPa, it is proved that the detection sleeve 205 is airtight, otherwise the detection sleeve 205 is required.
  • the detection process is simplified, the detection efficiency is improved, the detection period is shortened, the detection accuracy is improved, and the detection cost is reduced.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

A device for detecting the air tightness of a backup brake system of a high-speed motor train unit, comprising a pressure gauge (101) and a connecting pipe (102). A first end of the connecting pipe (102) is connected to the pressure gauge (101), and a second end of the connecting pipe (102) is provided with two ports, wherein at least one port is provided with a cutoff switch thereon (103). Also provided are a system and method for detecting the air tightness of a backup brake system of a high-speed motor train unit. The detection device, system and method can simplify the detection process, improve the detection efficiency and accuracy, and reduce the cost of detection.

Description

高速动车组备用制动***气密性检测装置、 ***及方法 技术领域  Air-tightness detecting device, system and method for high-speed EMU standby braking system
本发明涉及高速动车组检测技术， 尤其涉及一种高速动车组备用制 动***气密性检测装置、 ***及方法。 背景技术  The invention relates to a high-speed EMU detection technology, in particular to a gas-tightness detection device, system and method for a high-speed EMU standby brake system. Background technique
随着我国高速铁路的持续发展， 各型高速动车组相继进入了高级修 程。 按照相关规程规定， 时速 300公里以上高速动车组运行里程数累积 到达 120万公里以上时需要对整车做三级以上高级检修。 而备用制动系 统作为动车组安全运行的最后屏障， 其高级检修技术也是动车组高级修 程中的重要组成。  With the continuous development of China's high-speed railways, various types of high-speed EMUs have successively entered advanced repairs. According to the relevant regulations, when the mileage of high-speed EMUs with a speed of more than 300 kilometers per hour reaches more than 1.2 million kilometers, it is necessary to carry out the third-level and above-level maintenance of the whole vehicle. The standby brake system is the last barrier for the safe operation of the EMU, and its advanced overhaul technology is also an important component of the EMU's advanced maintenance.
目前， 对高速动车组备用制动***进行气密性检测的方法， 是在单 车气密性试验中将整个备用制动***作为一个或几个检测项点， 与车辆 空气***中的其他阀类、 风缸、 管路、 管接头等相关部件一起检测， 验 证各个测试项点是否泄漏。  At present, the method of airtightness detection of the high-speed EMU standby braking system is to use the entire standby braking system as one or several detection points in the bicycle airtightness test, and other valves in the vehicle air system. Check the air cylinder, piping, pipe joints and other related components to verify whether each test item is leaking.
由于备用制动***中的泄漏点一般只是某模块内的单个元件 （功能 单元） ， 应用现有检测方法只能检测出模块级的泄漏点， 而模块级的更 换或检修必然会造成检修周期过长和成本过高的状况。 因此， 现有对高 速动车组备用制动***进行气密性检测的方法， 存在检修过程繁琐、 效 率低、 准确性差、 成本高的问题。 发明内容  Since the leakage point in the standby braking system is generally only a single component (functional unit) in a module, the existing detection method can only detect the leakage point of the module level, and the replacement or overhaul of the module level will inevitably result in the overhaul period. Long and costly conditions. Therefore, the existing method for detecting the airtightness of the standby brake system of the high-speed EMU has the problems of cumbersome maintenance, low efficiency, poor accuracy, and high cost. Summary of the invention
本发明提供一种高速动车组备用制动***气密性检测装置、 ***及 方法， 以简化检测过程、 提高检测效率、 提高检测准确性、 降低检测成 本。  The invention provides a gas tightness detecting device, system and method for a high-speed EMU standby braking system, which simplifies the detecting process, improves the testing efficiency, improves the detection accuracy, and reduces the testing cost.
本发明提供一种高速动车组备用制动***气密性检测装置， 包括： 压力表；  The invention provides a gas tightness detecting device for a high-speed EMU standby braking system, comprising: a pressure gauge;
连接管， 所述连接管第一端连接所述压力表， 所述连接管的第二端 设有两个端口， 其中至少一个端口上设有截断开关。 本发明提供一种高速动车组备用制动***气密性检测***， 包括制 动***和本发明所提供的高速动车组备用制动***气密性检测装置； 所述制动***包括高低压控制***和外部元件， 所述高低压控制系 统包括压缩空气出入口； a connecting tube, a first end of the connecting tube is connected to the pressure gauge, and a second end of the connecting tube is provided with two ports, wherein at least one port is provided with a cut-off switch. The invention provides a high-speed EMU standby braking system airtightness detecting system, comprising a braking system and a high-speed EMU standby braking system airtightness detecting device provided by the invention; the braking system comprises high and low voltage control a system and an external component, the high and low pressure control system including a compressed air inlet and outlet;
所述检测装置的其中一个设有所述截断开关的端口与所述外部元 件连接， 另一个端口与所述压缩空气出入口连接。  One of the detecting means is provided with a port of the cut-off switch connected to the external element, and the other port is connected to the compressed air inlet and outlet.
本发明提供一种高速动车组备用制动***气密性检测方法， 对本发 明所提供的高速动车组备用制动***气密性检测***进行检测， 包括： 在保压状态下， 通过所述检测装置检测所述压缩空气出入口的第一 压力值；  The invention provides a gas tightness detecting method for a high-speed EMU standby braking system, and detects the air-tightness detecting system of the high-speed EMU standby braking system provided by the present invention, comprising: passing the detecting under the pressure holding state The device detects a first pressure value of the compressed air inlet and outlet;
关闭所述检测装置的与所述外部元件连接的端口处的截断开关， 所 述检测装置的另一个端口仍保持连通状态， 在单位时间后， 通过所述检 测装置检测所述压缩空气出入口的第二压力值；  Closing a shutoff switch at a port of the detecting device connected to the external component, the other port of the detecting device remains in a connected state, and after the unit time, detecting the compressed air inlet and outlet by the detecting device Two pressure values;
将所述第一压力值和所述第二压力值相减， 得到所述压缩空气出入 口的单位时间内的压降值；  Subtracting the first pressure value and the second pressure value to obtain a pressure drop value per unit time of the compressed air inlet and outlet;
根据所述压降值， 判断高低压控制***的各元件的气密性。  Based on the pressure drop value, the airtightness of each component of the high and low voltage control system is judged.
本发明提供一种高速动车组备用制动***气密性检测方法， 对本发 明所提供的高速动车组备用制动***气密性检测***进行检测， 包括： 将所述司机制动阀拨至锁止档位， 以截断 a出口和 b入口之间的气 路， 通过所述主风管充气一段时间后， 分别检测所述 a出口、 d出口和 e 入口处的压力值；  The invention provides a airtightness detecting method for a high-speed EMU standby braking system, and detects the air-tightness detecting system of the high-speed EMU standby braking system provided by the present invention, comprising: dialing the driver brake valve to the lock Stopping the gear position to intercept the air path between the a outlet and the b inlet, and after inflating through the main air duct for a period of time, respectively detecting the pressure values at the a outlet, the d outlet, and the e inlet;
关闭连接在 a出口、 d出口和 e入口处的检测装置的与所述外部元 件连接的端口处的截断开关， 打开所述球阀利用控制逻辑相反原理截断 所述电磁阀， 60秒后， 分别检测所述 a出口、 d出口和 e入口处的压力 值；  Closing the shutoff switch at the port connected to the external component of the detecting device at the a outlet, the d outlet and the e inlet, opening the ball valve and cutting off the solenoid valve by the opposite principle of the control logic, respectively, after 60 seconds, respectively detecting Pressure values at the a, d, and e inlets;
计算所述 a出口、 d出口和 e入口处的 60秒压降值分别为 Pal、 Pdl 和 Pel ; Calculating the 60-second pressure drop values at the a, d, and e inlets are P al , P dl , and P el , respectively;
当 Pal 5KPa且 Pel 5KPa时， 则证明所述减压阀气密性良好。 基于上述， 本发明提供的高速动车组备用制动***气密性检测装 置， 由于连接管第一端连接有压力表， 连接管的第二端设有两个端口， 且其中至少一个端口上设有截断开关， 当需要检测模块内的单个元件的 气密性时， 可将设有截断开关的端口与外部元件连接， 另一个端口连接 模块的压缩空气出入口， 在保压状态下将与模块的外部元件连接的端口 的截断开关关闭， 通过检测压缩空气出入口的单位时间内的压降值， 根 据所述压降值， 判断模块内的单个元件的气密性。 由此可以简化检测过 程、 提高检测效率、 提高检测准确性、 降低检测成本。 附图说明 When P al 5KPa and P el 5KPa, it was confirmed that the pressure reducing valve was airtight. Based on the above, the airtightness detecting device for the high-speed EMU standby braking system provided by the present invention has two ports connected to the second end of the connecting pipe because the first end of the connecting pipe is connected with the pressure gauge. And at least one of the ports is provided with a cut-off switch. When it is required to detect the airtightness of a single component in the module, the port with the cut-off switch can be connected to the external component, and the other port is connected to the compressed air inlet and outlet of the module. In the pressed state, the cutoff switch of the port connected to the external component of the module is turned off, and the pressure drop per unit time of the compressed air inlet and outlet is detected, and the airtightness of the individual components in the module is judged according to the voltage drop value. This simplifies the inspection process, improves the detection efficiency, improves the detection accuracy, and reduces the inspection cost. DRAWINGS
图 1为本发明实施例提供的一种高速动车组备用制动***气密性检 测装置的结构示意图；  1 is a schematic structural diagram of a gas tightness detecting device for a high-speed EMU standby braking system according to an embodiment of the present invention;
图 2为本发明实施例提供的一种高速动车组备用制动***气密性检 测***的机构示意图；  2 is a schematic structural diagram of a gas tightness detecting system for a high-speed EMU standby braking system according to an embodiment of the present invention;
图 3为本发明实施例提供的一种高速动车组备用制动***气密性检 测方法的流程图。 具体实施方式  FIG. 3 is a flowchart of a method for detecting airtightness of a high-speed EMU standby braking system according to an embodiment of the present invention. detailed description
请参考图 1， 本发明实施例提供一种高速动车组备用制动***气密 性检测装置， 包括： 压力表 101 ; 连接管 102， 所述连接管 102第一端 连接所述压力表 101， 所述连接管 102的第二端设有两个端口， 其中至 少一个端口上设有截断开关 103。  Referring to FIG. 1 , an embodiment of the present invention provides a gas tightness detecting device for a high-speed EMU standby braking system, including: a pressure gauge 101; a connecting pipe 102, the first end of the connecting pipe 102 is connected to the pressure gauge 101, The second end of the connecting tube 102 is provided with two ports, and at least one of the ports is provided with a cut-off switch 103.
本实施例中， 当需要检测模块内的单个元件的气密性时， 可将检测 装置设有截断开关 103的端口与外部元件连接， 而另一个端口连接模块 的压缩空气出入口， 在保压状态下通过压力表 101读出压缩空气出入口 的初始压力值， 再将检测装置与模块的外部元件连接的端口的截断开关 103关闭， 连接模块的压缩空气出入口的端口仍保持连通状态， 经过单 位时间后通过压力表 101读出压缩空气出入口的单位时间后的压力值， 将初始压力值和单位时间后的压力值相减， 得到压缩空气出入口单位时 间内的压降值， 根据压降值可判断模块内的单个元件的气密性。 由此可 以实现模块内的单个元件的气密性检测， 从而简化了检测过程、 提高了 检测效率、 提高了检测准确性、 降低了检测成本。 请参考图 1和图 2， 本发明实施例提供一种高速动车组备用制动系 统气密性检测***， 包括制动***和本发明实施例所述的高速动车组备 用制动***气密性检测装置； 所述制动***包括高低压控制*** 201和 外部元件， 所述高低压控制*** 201包括压缩空气出入口； 所述检测装 置的其中一个设有所述截断开关 103的端口与所述外部元件连接， 另一 个端口与所述压缩空气出入口连接。 In this embodiment, when it is required to detect the airtightness of a single component in the module, the port of the detecting device provided with the cut-off switch 103 can be connected to the external component, and the other port is connected to the compressed air inlet and outlet of the module, in the pressure holding state. The initial pressure value of the compressed air inlet and outlet is read out by the pressure gauge 101, and the cutoff switch 103 of the port connecting the detecting device and the external component of the module is closed, and the port of the compressed air inlet and outlet of the connecting module remains in communication state, after unit time The pressure value after the unit time of the compressed air inlet and outlet is read out by the pressure gauge 101, and the initial pressure value and the pressure value after the unit time are subtracted to obtain a pressure drop value per unit time of the compressed air inlet and outlet, and the module can be judged according to the pressure drop value. The airtightness of the individual components within. Thereby, the airtightness detection of the individual components in the module can be realized, thereby simplifying the detection process, improving the detection efficiency, improving the detection accuracy, and reducing the detection cost. Referring to FIG. 1 and FIG. 2, an embodiment of the present invention provides a airtightness detection system for a high-speed EMU standby brake system, including a brake system and a gas-tightness of a high-speed EMU standby brake system according to an embodiment of the present invention. a detecting device; the braking system includes a high and low voltage control system 201 and an external component, the high and low voltage control system 201 includes a compressed air inlet and outlet; one of the detecting devices is provided with a port of the shutoff switch 103 and the external The components are connected and the other port is connected to the compressed air inlet and outlet.
本实施例中， 当需要检测高低压控制*** 201内的单个元件的气密 性时， 可将检测装置设有截断开关 103的端口与外部元件连接， 而另一 个端口连接高低压控制*** 201的压缩空气出入口， 在保压状态下通过 压力表 101读出压缩空气出入口的初始压力值， 再将检测装置与外部元 件连接的端口的截断开关 103关闭， 连接压缩空气出入口的端口仍保持 连通状态， 经过单位时间后通过压力表 101读出压缩空气出入口的单位 时间后的压力值， 将初始压力值和单位时间后的压力值相减， 得到压缩 空气出入口单位时间内的压降值， 根据压降值可判断高低压控制*** 201内的单个元件的气密性。 由此可以实现高低压控制*** 201内的单 个元件的气密性检测， 从而简化了检测过程、 提高了检测效率、 提高了 检测准确性、 降低了检测成本。  In this embodiment, when it is required to detect the airtightness of a single component in the high and low voltage control system 201, the port of the detecting device provided with the cutoff switch 103 can be connected to the external component, and the other port is connected to the high and low voltage control system 201. The compressed air inlet and outlet, the initial pressure value of the compressed air inlet and outlet is read out by the pressure gauge 101 under the pressure holding state, and the cutoff switch 103 of the port connecting the detecting device and the external component is closed, and the port connecting the compressed air inlet and outlet remains in communication state. After the unit time, the pressure value after the unit time of the compressed air inlet and outlet is read out by the pressure gauge 101, and the initial pressure value and the pressure value after the unit time are subtracted, and the pressure drop value per unit time of the compressed air inlet and outlet is obtained, according to the pressure drop. The value determines the air tightness of the individual components within the high and low voltage control system 201. Thereby, the airtightness detection of the individual components in the high and low voltage control system 201 can be realized, thereby simplifying the detection process, improving the detection efficiency, improving the detection accuracy, and reducing the detection cost.
本实施例中， 所述高低压控制*** 201， 还可包括减压阀 202、 第 一止回阀 203、 电磁阀 204、 检测套管 205、 继动阀 206、 活塞阀 207和 第二止回阀 208， 所述压缩空气出入口可包括 a出口 209、 b入口 210、 c 入口 211、 d出口 212和 e入口 213，其中，所述 e入口 213和 a出口 209 之间连接有所述减压阀 202， 所述 a出口 209和 d出口 212之间依次连 接有所述第一止回阀 203和电磁阀 204， 所述 b入口 210和 d出口 212 之间依次连接有所述检测套管 205、 继动阀 206和活塞阀 207， 所述 b 入口 210和 c入口 211之间连接有所述第二止回阀 208，所述 c入口 211 连接所述活塞阀 207的控制端， 所述 e入口 213连接所述继动阀 206的 调节端； 所述外部元件可包括球阀 301、 司机制动阀 302和储压罐 303， 依次连接在所述 a出口 209和 b入口 210之间， 所述球阀 301还连接在 所述 a出口 209和 c入口 211之间； 所述外部元件还可包括主风管 304 和制动管 305， 所述主风管 304连接 e入口 213， 所述制动管 305连接 d 出口 212。 其中， 可通过连接在压缩空气出入口处的检测装置得到压缩 空气出入口处的单位时间内的压降值， 从而可对减压阀 202、 第一止回 阀 203、 电磁阀 204、 检测套管 205、 继动阀 206、 活塞阀 207和第二止 回阀 208的气密性进行判断。 由于司机制动阀 302、 球阀 301、 储压罐 303等外部元件安装在车内明显位置， 只需使用常规泡沬法就可以检查 出这些外部元件是否存在泄漏， 另外， 外部元件的气密性可先行进行检 测， 以保证高低压控制*** 201内的单个元件检测的准确性。 In this embodiment, the high and low pressure control system 201 may further include a pressure reducing valve 202, a first check valve 203, a solenoid valve 204, a detecting sleeve 205, a relay valve 206, a piston valve 207, and a second check. The valve 208, the compressed air inlet and outlet may include an outlet 209, a b inlet 210, a c inlet 211, a d outlet 212, and an e inlet 213, wherein the pressure reducing valve is connected between the e inlet 213 and the a outlet 209 202, the first check valve 203 and the electromagnetic valve 204 are sequentially connected between the a outlet 209 and the d outlet 212. The detection sleeve 205 is sequentially connected between the b inlet 210 and the d outlet 212. The relay valve 206 and the piston valve 207 are connected to the second check valve 208 between the b inlet 210 and the c inlet 211, and the c inlet 211 is connected to the control end of the piston valve 207, the e inlet 213 is connected to the regulating end of the relay valve 206; the external component may include a ball valve 301, a driver brake valve 302 and a pressure accumulating tank 303, which are sequentially connected between the a outlet 209 and the b inlet 210, the ball valve 301 is also coupled between the a outlet 209 and the inlet 211; the outer member may further include a main duct 304 and a brake pipe 305, the main air duct 304 is connected to the e inlet 213, and the brake pipe 305 is connected to d Exit 212. Wherein, the pressure drop value per unit time of the compressed air inlet and outlet can be obtained by the detecting device connected to the compressed air inlet and outlet, so that the pressure reducing valve 202, the first check valve 203, the electromagnetic valve 204, and the detecting sleeve 205 can be The airtightness of the relay valve 206, the piston valve 207, and the second check valve 208 is judged. Since the external components such as the driver brake valve 302, the ball valve 301, and the accumulator tank 303 are installed in a prominent position in the vehicle, it is only necessary to check whether the external components are leaked by using a conventional bubble method, and the airtightness of the external components. Detection can be performed first to ensure the accuracy of individual component detection within the high and low voltage control system 201.
在上述技术方案的基础上， 优选的， 高速动车组备用制动***气密 性检测***， 包括五个所述检测装置， 分别设置于所述 a出口 209、 b 入口 210、 c入口 211、 d出口 212和 e入口 213处； 所述检测套管 205 上连接有压力测量装置， 用于测量所述检测套管 205的压力值。 从而可 更为准确的对减压阀 202、 第一止回阀 203、 电磁阀 204、 检测套管 205、 继动阀 206、 活塞阀 207和第二止回阀 208的气密性进行检测。  Based on the above technical solution, preferably, the high-speed EMU standby braking system airtightness detecting system includes five said detecting devices, which are respectively disposed at the a-outlet 209, b-inlet 210, c-inlet 211, d At the outlet 212 and the inlet 213, a pressure measuring device is connected to the detecting sleeve 205 for measuring the pressure value of the detecting sleeve 205. Thereby, the airtightness of the pressure reducing valve 202, the first check valve 203, the solenoid valve 204, the detecting sleeve 205, the relay valve 206, the piston valve 207, and the second check valve 208 can be more accurately detected.
请参考图 1、 图 2和图 3， 本发明实施例提供一种高速动车组备用 制动***气密性检测方法， 对本发明任意实施例所述的高速动车组备用 制动***气密性检测***进行检测， 包括：  Referring to FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of the present invention provides a method for detecting air tightness of a standby brake system of a high-speed EMU, and detecting air tightness of a standby brake system of a high-speed EMU according to any embodiment of the present invention. The system performs testing, including:
步骤 S001 , 在保压状态下， 通过所述检测装置检测所述压缩空气出 入口的第一压力值；  Step S001: detecting, by the detecting device, a first pressure value of the compressed air inlet and outlet in a pressure holding state;
步骤 S002 ,关闭所述检测装置的与所述外部元件连接的端口处的截 断开关 103， 所述检测装置的另一个端口仍保持连通状态， 在单位时间 后， 通过所述检测装置检测所述压缩空气出入口的第二压力值；  Step S002, closing the cut-off switch 103 at the port of the detecting device connected to the external component, the other port of the detecting device is still in a connected state, and after the unit time, detecting the compression by the detecting device a second pressure value of the air inlet and outlet;
步骤 S003 , 将所述第一压力值和所述第二压力值相减， 得到所述压 缩空气出入口的单位时间内的压降值；  Step S003, subtracting the first pressure value and the second pressure value to obtain a pressure drop value per unit time of the compressed air inlet and outlet;
步骤 S004 , 根据所述压降值， 判断高低压控制*** 201的各元件的 气密性。  Step S004, determining the airtightness of each component of the high and low voltage control system 201 based on the voltage drop value.
由此可以实现高低压控制*** 201内各元件的气密性检测， 从而简 化了检测过程、 提高了检测效率、 提高了检测准确性、 降低了检测成本。  Thereby, the airtightness detection of each component in the high and low voltage control system 201 can be realized, thereby simplifying the detection process, improving the detection efficiency, improving the detection accuracy, and reducing the detection cost.
请参考图 1和图 2， 本发明实施例提供一种高速动车组备用制动系 统气密性检测方法， 对本发明实施例所述的高速动车组备用制动***气 密性检测***进行检测， 其中， 先对减压阀 202的气密性进行检测， 具 体步骤为： Referring to FIG. 1 and FIG. 2, an embodiment of the present invention provides a method for detecting air tightness of a standby brake system of a high-speed EMU, and detecting a hermeticity detection system for a standby brake system of a high-speed EMU according to an embodiment of the present invention. Wherein, the airtightness of the pressure reducing valve 202 is first detected, The body steps are:
步骤 S 101 , 将所述司机制动阀 302拨至锁止档位， 以截断 a出口 209和 b入口 210之间的气路， 通过所述主风管 304充气一段时间后， 分别检测所述 a出口 209、 d出口 212和 e入口 213处的压力值；  Step S101, the driver brake valve 302 is turned to the lock gear position to intercept the air path between the a outlet 209 and the b inlet 210, and after being inflated through the main air duct 304 for a period of time, respectively detecting the a pressure value at outlet 209, d outlet 212 and e inlet 213;
a出口 209和 b入口 210之间的气路被截断后， 主风管 304中的气 流通过 e入口 213、 减压阀 202流、 a出口 209、 球阀 301和 c入口 211 流至活塞阀 207的控制端， 将活塞阀 207打开， 主风管 304中的气流通 过 e入口 213、 减压阀 202、 第一止回阀 203和电磁阀 204流至 d出口 212，主风管 304中的气流通过 e入口 213和继动阀 206流至 d出口 212， 在主风管 304充气一段时间后， a出口 209、 d出口 212和 e入口 213处 达到保压状态， 此时分别检测所述 a出口 209、 d出口 212和 e入口 213 处的压力值。  After the air path between the a outlet 209 and the b inlet 210 is cut off, the air flow in the main duct 304 flows to the piston valve 207 through the e inlet 213, the pressure reducing valve 202 flow, the a outlet 209, the ball valve 301, and the c inlet 211. At the control end, the piston valve 207 is opened, and the air flow in the main air duct 304 flows through the e inlet 213, the pressure reducing valve 202, the first check valve 203, and the solenoid valve 204 to the d outlet 212, and the air flow in the main air duct 304 passes. The e inlet 213 and the relay valve 206 flow to the d outlet 212. After the main air duct 304 is inflated for a period of time, the a outlet 209, the d outlet 212, and the e inlet 213 reach a pressure holding state, and the a outlet 209 is detected respectively. , d outlet 212 and e inlet 213 pressure values.
步骤 S102 , 关闭连接在 a出口 209、 d出口 212和 e入口 213处的 检测装置的与所述外部元件连接的端口处的截断开关 103， 打开所述球 阀 301利用控制逻辑相反原理截断所述电磁阀 204， 60秒后， 分别检测 所述 a出口 209、 d出口 212和 e入口 213处的压力值；  Step S102, closing the cutoff switch 103 at the port connected to the external component of the detecting device connected at the a outlet 209, the d outlet 212 and the e inlet 213, opening the ball valve 301 to cut off the electromagnetic using the opposite principle of the control logic Valve 204, after 60 seconds, respectively detecting the pressure values at the a outlet 209, the d outlet 212 and the inlet 213;
步骤 S 103 , 计算所述 a出口 209、 d出口 212和 e入口 213处的 60 秒压降值分别为 Pal、 ？^和！^ ; Step S103, calculating the 60-second voltage drop values at the a outlet 209, the d outlet 212, and the e inlet 213 are respectively P al , ? ^And! ^ ;
步骤 S104 , 此时， 减压阀 202的气密性是否良好会对 a出口 209和 e入口 213的 60秒压降值产生影响， 电磁阀 204的气密性是否良好会对 d出口 212的 60秒压降值产生影响， 继动阀 206的气密性是否良好会对 d出口 212的 60秒压降值产生影响， 因此， 当 Pal 5KPa且 Pel 5KPa 时， 则证明所述减压阀 202气密性良好， 否则则需要对减压阀 202进行 检修或更换。 Step S104, at this time, whether the airtightness of the pressure reducing valve 202 is good affects the 60 second pressure drop value of the a outlet 209 and the e inlet 213, and whether the airtightness of the electromagnetic valve 204 is good or not is 60 for the d outlet 212. The second pressure drop has an influence. Whether the airtightness of the relay valve 206 is good will affect the 60 second pressure drop value of the d outlet 212. Therefore, when P al 5KPa and P el 5KPa, the pressure reducing valve is proved. 202 is airtight, otherwise the pressure reducing valve 202 needs to be repaired or replaced.
本实施例中， 优选的， 在确定减压阀 202气密性良好的情况下， 对 第一止回阀 203和电磁阀 204的气密性进行检测， 具体步骤为：  In the present embodiment, preferably, in the case where it is determined that the pressure reducing valve 202 is airtight, the airtightness of the first check valve 203 and the electromagnetic valve 204 is detected. The specific steps are as follows:
步骤 S 105 , 打开连接在 a出口 209、 d出口 212和 e入口 213处的 检测装置的与所述外部元件连接的端口处的截断开关 103， 关闭所述球 阀 301利用控制逻辑相反原理打开所述电磁阀 204，通过所述主风管 304 充气一段时间后， 分别检测所述 a出口 209和 d出口 212处的压力值； 关闭所述球阀 301利用控制逻辑相反原理打开所述电磁阀 204后， 主风管 304中的气流通过 e入口 213、减压阀 202、第一止回阀 203和电 磁阀 204流至 d出口 212， 主风管 304中的气流通过 e入口 213和减压 阀 202流至 a出口 209， 在主风管 304充气一段时间后， a出口 209和 d 出口 212处达到保压状态， 此时分别检测所述 a出口 209和 d出口 212 处的压力值。 Step S105, opening the cutoff switch 103 at the port connected to the external component of the detecting device connected at the a outlet 209, the d outlet 212 and the e inlet 213, closing the ball valve 301 to open the said rule by the opposite principle of the control logic The solenoid valve 204, after being inflated through the main air duct 304 for a period of time, respectively detects the pressure values at the a outlet 209 and the outlet 212 of the d; After the ball valve 301 is closed and the solenoid valve 204 is opened by the opposite principle of the control logic, the air flow in the main air duct 304 flows through the e inlet 213, the pressure reducing valve 202, the first check valve 203, and the solenoid valve 204 to the d outlet 212. The airflow in the main air duct 304 flows through the e inlet 213 and the pressure reducing valve 202 to the a outlet 209. After the main air duct 304 is inflated for a period of time, the a outlet 209 and the d outlet 212 reach a pressure holding state, and are respectively detected. The pressure values at the a outlet 209 and the d outlet 212.
步骤 S106 , 关闭连接在 a出口 209、 d出口 212和 e入口 213处的 检测装置的与所述外部元件连接的端口处的截断开关 103， 60秒后， 分 别检测所述 a出口 209和 d出口 212处的压力值；  Step S106, the cut-off switch 103 at the port connected to the external component of the detecting device connected at the a outlet 209, the d outlet 212 and the e-entry 213 is closed, and after 60 seconds, the a-outlet 209 and the d-out are respectively detected. Pressure value at 212;
步骤 S107 , 计算所述 a出口 209和 d出口 212处的 60秒压降值分 别为 Pa2和 Pd2 ; Step S107, calculating a 60-second voltage drop value at the a outlet 209 and the d outlet 212 as P a2 and P d2, respectively ;
步骤 S108 , 此时， 电磁阀 204的气密性是否良好会对 a出口 209和 d出口 212的 60秒压降值产生影响，第一止回阀 203的气密性是否良好 会对 a出口 209和 d出口 212的 60秒压降值产生影响， 因此， 当 Pdl O. lKPa且 Pa2 5KPa且 Pd2 5KPa时， 则证明所述电磁阀 204气密性良 好，否则则需要对电磁阀 204进行检修或更换；当 Pa2 5 KPa且 Pd2 5 KPa 时， 则证明所述第一止回阀 203气密性良好， 否则则需要对第一止回阀 203进行检修或更换。 Step S108, at this time, whether the airtightness of the electromagnetic valve 204 is good or not affects the 60-second pressure drop value of the a-outlet 209 and the d-outlet 212, and whether the airtightness of the first check valve 203 is good will be the a-outlet 209. And the 60-second pressure drop value of the d outlet 212 has an influence. Therefore, when P dl O. lKPa and P a2 5KPa and P d2 5KPa, it is proved that the solenoid valve 204 is airtight, otherwise the solenoid valve 204 is required. The inspection or replacement is performed; when P a2 5 KPa and P d2 5 KPa, it is proved that the first check valve 203 is airtight, otherwise the first check valve 203 needs to be repaired or replaced.
本实施例中， 优选的， 在确定减压阀 202、 电磁阀 204和第一止回 阀 203气密性良好的情况下， 对第二止回阀 208和活塞阀 207的气密性 进行检测， 具体步骤为：  In the present embodiment, preferably, the airtightness of the second check valve 208 and the piston valve 207 is detected in the case where it is determined that the pressure reducing valve 202, the electromagnetic valve 204, and the first check valve 203 are airtight. The specific steps are:
步骤 S 109 , 打开连接在 a出口 209、 d出口 212和 e入口 213处的 检测装置的与所述外部元件连接的端口处的截断开关 103， 打所述开球 阀 301并将司机制动阀 302拨至充风档位， 以连通所述 a出口 209和 b 入口 210之间的气路， 通过主风管 304充气一段时间后， 分别检测所述 b入口 210、 c入口 211和 d出口 212处的压力值， 并通过所述压力测量 装置测得所述检测套管 205的压力值；  Step S109, opening the cutoff switch 103 at the port connected to the external component of the detecting device connected at the a outlet 209, the d outlet 212 and the e inlet 213, hitting the opening valve 301 and driving the driver brake valve 302 Turning to the air charging position to connect the air path between the a outlet 209 and the b inlet 210, after being inflated through the main air duct 304 for a period of time, respectively detecting the b inlet 210, the c inlet 211 and the d outlet 212 Pressure value, and the pressure value of the detection sleeve 205 is measured by the pressure measuring device;
a出口 209和 b入口 210之间的气路连通后， 主风管 304中的气流 通过 e入口 213、 减压阀 202流、 a出口 209、 球阀 301和 c入口 211流 至活塞阀 207的控制端， 主风管 304中的气流通过 e入口 213、 减压阀 202流、 a出口 209、 球阀 301、 司机制动阀 302、 b入口 210和第二止回 阀 208流至活塞阀 207的控制端， 将活塞阀 207打开， 主风管 304中的 气流通过 e入口 213、 减压阀 202流、 a出口 209、 球阀 301、 司机制动 阀 302、 b入口 210、 检测套管 205、 继动阀 206和活塞阀 207流至 d出 口 212， 在主风管 304充气一段时间后， b入口 210、 c入口 211、 d出口 212处以及检测套管 205处达到保压状态，此时分别检测所述 b入口 210、 c入口 211、 d出口 212和检测套管 205处的压力值。 After the air path between the outlet 209 and the b inlet 210 is communicated, the flow of the air in the main duct 304 through the e inlet 213, the pressure reducing valve 202, the a outlet 209, the ball valve 301 and the c inlet 211 to the control of the piston valve 207 End, the air flow in the main duct 304 passes through the e inlet 213, the pressure reducing valve The 202 flow, a outlet 209, the ball valve 301, the driver brake valve 302, the b inlet 210, and the second check valve 208 flow to the control end of the piston valve 207, opening the piston valve 207, and the air flow in the main air duct 304 passes through the e The inlet 213, the pressure reducing valve 202 flow, the a outlet 209, the ball valve 301, the driver brake valve 302, the b inlet 210, the detection sleeve 205, the relay valve 206, and the piston valve 207 flow to the d outlet 212, at the main duct 304. After a period of inflation, b inlet 210, c inlet 211, d outlet 212, and detection sleeve 205 reach a pressure holding state, at which time the b inlet 210, c inlet 211, d outlet 212, and detection sleeve 205 are detected, respectively. The pressure value at the place.
步骤 S 110 , 关闭连接在所述 b入口 210、 c入口 211和 d出口 212 处的检测装置的与所述外部元件连接的端口处的截断开关 103， 此时活 塞阀 207关闭， 60秒后， 分别检测所述 b入口 210、 c入口 211和 d出 口 212处的压力值， 并通过所述压力测量装置测得所述检测套管 205的 压力值；  Step S110, closing the cut-off switch 103 at the port connected to the external component of the detecting device at the b inlet 210, the c inlet 211 and the d outlet 212, at which time the piston valve 207 is closed, 60 seconds later, Detecting pressure values at the b inlet 210, the c inlet 211, and the d outlet 212, respectively, and measuring the pressure value of the detection sleeve 205 by the pressure measuring device;
步骤 S 111 , 计算所述 b入口 210、 c入口 211和 d出口 212处的 60 秒压降值为 Pb3、 。3和 Pd3 ;计算所述检测套管 205的 60秒压降值为 Step S111, calculating a 60-second voltage drop value of P b3 at the b inlet 210, the c inlet 211, and the d outlet 212. 3 and P d3 ; calculating the 60 second pressure drop value of the test sleeve 205
步骤 S112 , 此时， 活塞阀 207的气密性是否良好会对 c入口 211和 d出口 212的 60秒压降值产生影响，第二止回阀 208的气密性是否良好 会对 c入口 211的 60秒压降值产生影响，检测套管 205的气密性是否良 好会对 b入口 210的 60秒压降值产生影响， 继动阀 206的气密性是否 良好会对 b入口 210的 60秒压降值产生影响， 因此， 当 Pc3 0.1KPa且 Pd3 5KPa时， 则证明所述活塞阀 207气密性良好， 否则则需要对活塞 阀 207进行检修或更换； 当 Pc3 0.1KPa时， 则证明所述第二止回阀 208 气密性良好， 否则则需要对第二止回阀 208进行检修或更换。 Step S112, at this time, whether the airtightness of the piston valve 207 is good or not affects the 60-second pressure drop value of the c inlet 211 and the d outlet 212, and whether the airtightness of the second check valve 208 is good will be the c inlet 211. The 60 second pressure drop value has an influence. Whether the airtightness of the detecting sleeve 205 is good will affect the 60 second pressure drop value of the b inlet 210, and whether the airtightness of the relay valve 206 is good will be 60 for the b inlet 210. The second pressure drop has an influence. Therefore, when P c3 0.1KPa and P d3 5KPa, it is proved that the piston valve 207 is airtight, otherwise the piston valve 207 needs to be repaired or replaced; when P c3 0.1KPa Then, the second check valve 208 is proved to be airtight, otherwise the second check valve 208 needs to be repaired or replaced.
本实施例中， 优选的， 在确定减压阀 202、 电磁阀 204、 第一止回 阀 203、 活塞阀 207和第二止回阀 208气密性良好的情况下， 对检测套 管 205和继动阀 206的气密性进行检测， 具体步骤为：  In the present embodiment, preferably, in the case where it is determined that the pressure reducing valve 202, the electromagnetic valve 204, the first check valve 203, the piston valve 207, and the second check valve 208 are airtight, the detection sleeve 205 and The airtightness of the relay valve 206 is detected, and the specific steps are as follows:
步骤 S113 , 打开连接在所述 b入口 210、 c入口 211和 d出口 212 处的检测装置的与所述外部元件连接的端口处的截断开关 103， 通过所 述主风管 304充气一段时间后， 分别检测所述 b入口 210和 d出口 212 处的压力值，并通过所述压力测量装置测得所述检测套管 205的压力值； 主风管 304中的气流通过 e入口 213、 减压阀 202流、 a出口 209、 球阀 301和 c入口 211流至活塞阀 207的控制端， 主风管 304中的气流 通过 e入口 213、减压阀 202流、 a出口 209、球阀 301、司机制动阀 302、 b入口 210和第二止回阀 208流至活塞阀 207的控制端， 将活塞阀 207 打开， 主风管 304中的气流通过 e入口 213、减压阀 202流、 a出口 209、 球阀 301、 司机制动阀 302、 b入口 210、 检测套管 205、 继动阀 206和 活塞阀 207流至 d出口 212， 在主风管 304充气一段时间后， b入口 210 和 d出口 212处达到保压状态， 此时分别检测所述 b入口 210、 d出口 212以及检测套管 205处的压力值。 Step S113, opening the cut-off switch 103 at the port connected to the external component of the detecting device connected at the b inlet 210, the c inlet 211 and the d outlet 212, after being inflated through the main air duct 304 for a period of time, The pressure values at the b inlet 210 and the d outlet 212 are respectively detected, and the pressure value of the detection sleeve 205 is measured by the pressure measuring device; the air flow in the main air duct 304 passes through the e inlet 213, the pressure reducing valve 202 stream, a exit 209, The ball valve 301 and the c inlet 211 flow to the control end of the piston valve 207, and the air flow in the main air duct 304 passes through the e inlet 213, the pressure reducing valve 202 flow, the a outlet 209, the ball valve 301, the driver brake valve 302, the b inlet 210, and The second check valve 208 flows to the control end of the piston valve 207 to open the piston valve 207. The air flow in the main air duct 304 passes through the e inlet 213, the pressure reducing valve 202, the a outlet 209, the ball valve 301, and the driver brake valve. 302, b inlet 210, detection sleeve 205, relay valve 206, and piston valve 207 flow to d outlet 212. After the main air duct 304 is inflated for a period of time, b inlet 210 and d outlet 212 reach a pressure holding state. The pressure values at the b inlet 210, the d outlet 212, and the detection sleeve 205 are detected, respectively.
步骤 S114 ,关闭连接在所述 b入口 210和 d出口 212处的检测装置 的与所述外部元件连接的端口处的截断开关 103， 此时活塞阀 207仍为 开启状态， 60秒后，分别检测所述 b入口 210和 d出口 212处的压力值， 并通过所述压力测量装置测得所述检测套管 205的压力值；  Step S114, closing the cutoff switch 103 at the port of the detecting device connected to the b inlet 210 and the d outlet 212 connected to the external component, at which time the piston valve 207 is still open, and after 60 seconds, respectively detecting a pressure value at the b inlet 210 and the d outlet 212, and the pressure value of the detection sleeve 205 is measured by the pressure measuring device;
步骤 S115 , 计算所述 b入口 210和 d出口 212处的 60秒压降值为 Pb4和 Pd4 ; 计算所述检测套管 205的 60秒压降值为 Step S115, calculating a 60-second pressure drop value of P b4 and P d4 at the b inlet 210 and the d outlet 212 ; calculating a 60-second voltage drop value of the detection sleeve 205
步骤 S116 , 此时， 检测套管 205的气密性是否良好会对 b入口 210 的 60秒压降值产生影响， 继动阀 206的气密性是否良好会对 b入口 210 和 d出口 212处的 60秒压降值产生影响， 因此， 当 Pb3-Prl 0.01KPa且 Pb4-P^ 0.01KPa时， 则证明所述检测套管 205气密性良好， 否则则需要 对检测套管 205进行检修或更换； 当 Pdl 0.1KPa且 Pb3 0.1KPa且 Pb4 5KPa且 Pd4 5KPa时， 则证明所述继动阀 206气密性良好， 否则则需 要对继动阀 206进行检修或更换。 Step S116, at this time, whether the airtightness of the detecting sleeve 205 is good will affect the 60-second pressure drop value of the b inlet 210, and whether the airtightness of the relay valve 206 is good will be the b inlet 210 and the d outlet 212. The 60-second pressure drop value has an influence. Therefore, when P b3 -P rl 0.01 KPa and P b4 -P^ 0.01 KPa, it is proved that the detection sleeve 205 is airtight, otherwise the detection sleeve 205 is required. For maintenance or replacement; when P dl 0.1KPa and P b3 0.1KPa and P b4 5KPa and P d4 5KPa, it is proved that the relay valve 206 is airtight, otherwise the relay valve 206 needs to be repaired or replaced. .
以此， 完成对于高低压控制*** 201内的各元件的检测， 简化了检 测过程、 提高了检测效率、 缩短了检测周期， 提高了检测准确性、 降低 了检测成本。  Thereby, the detection of each component in the high and low voltage control system 201 is completed, the detection process is simplified, the detection efficiency is improved, the detection period is shortened, the detection accuracy is improved, and the detection cost is reduced.
最后应说明的是： 以上实施例仅用以说明本发明的技术方案， 而非 对其限制； 尽管参照前述实施例对本发明进行了详细的说明， 本领域的 普通技术人员应当理解： 其依然可以对前述实施例所记载的技术方案进 行修改， 或者对其中部分或者全部技术特征进行等同替换； 而这些修改 或者替换， 并不使相应技术方案的本质脱离本发明实施例技术方案的范 围。  It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some or all of the technical features are equivalently replaced; and the modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

权 利 要 求 书 claims
1、 一种高速动车组备用制动***气密性检测装置， 其特征在于， 包括： 1. An air tightness detection device for a high-speed EMU backup braking system, which is characterized by including:
压力表； pressure gauge;
连接管， 所述连接管第一端连接所述压力表， 所述连接管的第二端 设有两个端口， 其中至少一个端口上设有截断开关。 Connecting pipe, the first end of the connecting pipe is connected to the pressure gauge, the second end of the connecting pipe is provided with two ports, at least one of which is provided with a cut-off switch.
2、 一种高速动车组备用制动***气密性检测***， 其特征在于， 包括制动***和权利要求 1所述的高速动车组备用制动***气密性检测 装置； 2. An air tightness detection system for a high-speed EMU backup braking system, which is characterized in that it includes a braking system and an air-tightness detection device for the high-speed EMU backup braking system described in claim 1;
所述制动***包括高低压控制***和外部元件， 所述高低压控制系 统包括压缩空气出入口； The braking system includes a high and low pressure control system and external components. The high and low pressure control system includes a compressed air inlet and outlet;
所述检测装置的其中一个设有所述截断开关的端口与所述外部元 件连接， 另一个端口与所述压缩空气出入口连接。 One port of the detection device equipped with the cut-off switch is connected to the external component, and the other port is connected to the compressed air inlet and outlet.
3、 根据权利要求 2所述的高速动车组备用制动***气密性检测系 统， 其特征在于， 3. The high-speed EMU backup braking system air tightness detection system according to claim 2, characterized in that,
所述高低压控制***， 还包括减压阀、 第一止回阀、 电磁阀、 检测 套管、 继动阀、 活塞阀和第二止回阀， 所述压缩空气出入口包括 a出口、 b入口、 c入口、 d出口和 e入口， 其中， 所述 e入口和 a出口之间连接 有所述减压阀， 所述 a出口和 d出口之间依次连接有所述第一止回阀和 电磁阀， 所述 b入口和 d出口之间依次连接有所述检测套管、 继动阀和 活塞阀， 所述 b入口和 c入口之间连接有所述第二止回阀， 所述 c入口 连接所述活塞阀的控制端， 所述 e入口连接所述继动阀的调节端； The high and low pressure control system also includes a pressure reducing valve, a first check valve, a solenoid valve, a detection sleeve, a relay valve, a piston valve and a second check valve. The compressed air inlet and outlet includes an outlet a and an inlet b. , c inlet, d outlet and e inlet, wherein the pressure reducing valve is connected between the e inlet and a outlet, and the first check valve and solenoid are connected in sequence between the a outlet and d outlet. valve, the detection sleeve, the relay valve and the piston valve are connected in sequence between the b inlet and the d outlet, the second check valve is connected between the b inlet and the c inlet, the c inlet The control end of the piston valve is connected, and the e inlet is connected to the adjustment end of the relay valve;
所述外部元件包括球阀、 司机制动阀和储压罐， 依次连接在所述 a 出口和 b入口之间， 所述球阀还连接在所述 a出口和 c入口之间； The external components include a ball valve, a driver brake valve and a pressure storage tank, which are connected in turn between the a outlet and the b inlet, and the ball valve is also connected between the a outlet and the c inlet;
所述外部元件还包括主风管和制动管， 所述主风管连接 e入口， 所 述制动管连接 d出口。 The external components also include a main air duct and a brake pipe. The main air duct is connected to the e inlet, and the brake pipe is connected to the d outlet.
4、 根据权利要求 3所述的高速动车组备用制动***气密性检测系 统， 其特征在于， 包括五个所述检测装置， 分别设置于所述 a出口、 b 入口、 c入口、 d出口和 e入口处； 4. The high-speed EMU backup braking system air tightness detection system according to claim 3, characterized in that it includes five detection devices, which are respectively arranged at the a exit, b entrance, c entrance, and d exit. and e entrance;
所述检测套管上连接有压力测量装置， 用于测量所述检测套管的压 力值。 A pressure measuring device is connected to the detection casing for measuring the pressure of the detection casing. force value.
5、 一种高速动车组备用制动***气密性检测方法， 其特征在于， 对权利要求 2-4中任一所述的高速动车组备用制动***气密性检测*** 进行检测， 包括： 5. A method for detecting the air tightness of the high-speed EMU backup braking system, which is characterized by testing the air-tightness detection system of the high-speed EMU backup system described in any one of claims 2-4, including:
在保压状态下， 通过所述检测装置检测所述压缩空气出入口的第一 压力值； In the pressure maintaining state, detect the first pressure value of the compressed air inlet and outlet through the detection device;
关闭所述检测装置的与所述外部元件连接的端口处的截断开关， 所 述检测装置的另一个端口仍保持连通状态， 在单位时间后， 通过所述检 测装置检测所述压缩空气出入口的第二压力值； Close the cut-off switch at the port of the detection device connected to the external component, and the other port of the detection device remains connected. After the unit time, the third port of the compressed air inlet and outlet is detected by the detection device. 2. Pressure value;
将所述第一压力值和所述第二压力值相减， 得到所述压缩空气出入 口的单位时间内的压降值； Subtract the first pressure value and the second pressure value to obtain the pressure drop value per unit time of the compressed air inlet and outlet;
根据所述压降值， 判断高低压控制***的各元件的气密性。 According to the pressure drop value, the air tightness of each component of the high and low pressure control system is judged.
6、 一种高速动车组备用制动***气密性检测方法， 其特征在于， 对权利要求 4所述的高速动车组备用制动***气密性检测***进行检 测， 包括： 6. A method for detecting the air tightness of the high-speed EMU backup braking system, which is characterized by testing the air-tightness detection system of the high-speed EMU backup braking system described in claim 4, including:
将所述司机制动阀拨至锁止档位， 以截断 a出口和 b入口之间的气 路， 通过所述主风管充气一段时间后， 分别检测所述 a出口、 d出口和 e 入口处的压力值； Move the driver's brake valve to the lock position to cut off the air path between the a outlet and the b inlet. After inflating through the main air duct for a period of time, detect the a outlet, d outlet and e inlet respectively. pressure value at;
关闭连接在 a出口、 d出口和 e入口处的检测装置的与所述外部元 件连接的端口处的截断开关， 打开所述球阀利用控制逻辑相反原理截断 所述电磁阀， 60秒后， 分别检测所述 a出口、 d出口和 e入口处的压力 值； Close the cut-off switch at the port connected to the external component of the detection device connected to the a outlet, d outlet and e inlet, open the ball valve and use the opposite principle of control logic to cut off the solenoid valve. After 60 seconds, detect respectively The pressure values at the a outlet, d outlet and e inlet;
计算所述 a出口、 d出口和 e入口处的 60秒压降值分别为 Pal、 Pdl 和 Pel ; Calculate the 60-second pressure drop values at the a outlet, d outlet and e inlet as P al , P dl and P el respectively;
当 Pal 5KPa且 Pel 5KPa时， 则证明所述减压阀气密性良好。 When P al 5KPa and P el 5KPa, it proves that the air tightness of the pressure reducing valve is good.
7、 根据权利要求 6所述的高速动车组备用制动***气密性检测方 法， 其特征在于， 还包括： 7. The air tightness detection method of the high-speed EMU backup braking system according to claim 6, characterized in that it also includes:
打开连接在 a出口、 d出口和 e入口处的检测装置的与所述外部元 件连接的端口处的截断开关， 关闭所述球阀利用控制逻辑相反原理打开 所述电磁阀， 通过所述主风管充气一段时间后， 分别检测所述 a出口和 d出口处的压力值； Open the cut-off switch at the port connected to the external component of the detection device connected at the a outlet, d outlet and e inlet, close the ball valve, use the opposite principle of control logic to open the solenoid valve, and pass the main air duct After inflating for a period of time, detect the outlet a and dThe pressure value at the outlet;
关闭连接在 a出口、 d出口和 e入口处的检测装置的与所述外部元 件连接的端口处的截断开关， 60秒后， 分别检测所述 a出口和 d出口处 的压力值； Turn off the cut-off switch at the port connected to the external component of the detection device connected to the a outlet, d outlet and e inlet, and after 60 seconds, detect the pressure values at the a outlet and d outlet respectively;
计算所述 a出口和 d出口处的 60秒压降值分别为 Pa2和 Pd2 ; Calculate the 60-second pressure drop values at outlet a and outlet d as P a2 and P d2 respectively;
当 Pdl 0.1KPa且 Pa2 5KPa且 Pd2 5KPa时， 则证明所述电磁阀 气密性良好； When P dl 0.1KPa and P a2 5KPa and P d2 5KPa, it proves that the air tightness of the solenoid valve is good;
当 Pa2 5KPa且 Pd2 5KPa时，则证明所述第一止回阀气密性良好。 When P a2 5KPa and P d2 5KPa, it is proved that the air tightness of the first check valve is good.
8、 根据权利要求 7所述的高速动车组备用制动***气密性检测方 法， 其特征在于， 还包括： 8. The air tightness detection method of the high-speed EMU backup braking system according to claim 7, further comprising:
打开连接在 a出口、 d出口和 e入口处的检测装置的与所述外部元 件连接的端口处的截断开关， 打所述开球阀并将司机制动阀拨至充风档 位， 以连通所述 a出口和 b入口之间的气路， 通过主风管充气一段时间 后， 分别检测所述 b入口、 c入口和 d出口处的压力值， 并通过所述压 力测量装置测得所述检测套管的压力值； Open the cut-off switch at the port connected to the external component of the detection device connected to the a outlet, d outlet and e inlet, open the ball valve and move the driver brake valve to the air charging position to connect all After the air path between the a outlet and the b inlet is inflated for a period of time through the main air duct, the pressure values at the b inlet, c inlet and d outlet are respectively detected, and the detection is measured by the pressure measuring device. The pressure value of the casing;
关闭连接在所述 b入口、 c入口和 d出口处的检测装置的与所述外 部元件连接的端口处的截断开关， 60秒后， 分别检测所述 b入口、 c入 口和 d出口处的压力值， 并通过所述压力测量装置测得所述检测套管的 压力值； Turn off the cut-off switch at the port connected to the external component of the detection device connected to the b inlet, c inlet and d outlet. After 60 seconds, detect the pressure at the b inlet, c inlet and d outlet respectively. value, and measure the pressure value of the detection casing through the pressure measuring device;
计算所述 b入口、 c入口和 d出口处的 60秒压降值为？¾3、？。3和 Pd3 ; 计算所述检测套管的 60秒压降值为 Pri ; Calculate the 60 second pressure drop value at the b inlet, c inlet and d outlet? ¾3 ,? . 3 and P d3; calculate the 60-second pressure drop value of the detection casing as P ri;
当 Pc3 0.1KPa且 Pd3 5KPa时， 则证明所述活塞阀气密性良好； 当 Pc3 0.1KPa时， 则证明所述第二止回阀气密性良好。 When P c3 is 0.1KPa and P d3 is 5KPa, it is proved that the air tightness of the piston valve is good; when P c3 is 0.1KPa, it is proved that the air tightness of the second check valve is good.
9、 根据权利要求 8所述的高速动车组备用制动***气密性检测方 法， 其特征在于， 还包括： 9. The air tightness detection method of the high-speed EMU backup braking system according to claim 8, characterized in that it also includes:
打开连接在所述 b入口、 c入口和 d出口处的检测装置的与所述外 部元件连接的端口处的截断开关， 通过所述主风管充气一段时间后， 分 别检测所述 b入口和 d出口处的压力值， 并通过所述压力测量装置测得 所述检测套管的压力值； Turn on the cut-off switch at the port connected to the external component of the detection device connected to the b inlet, c inlet and d outlet. After inflating through the main air duct for a period of time, detect the b inlet and d respectively. The pressure value at the outlet, and the pressure value of the detection sleeve is measured by the pressure measuring device;
关闭连接在所述 b入口和 d出口处的检测装置的与所述外部元件连 接的端口处的截断开关， 60秒后， 分别检测所述 b入口和 d出口处的压 力值， 并通过所述压力测量装置测得所述检测套管的压力值； Close the connection between the detection device connected at the b inlet and d outlet and the external component. The cut-off switch at the connected port, after 60 seconds, detect the pressure values at the b inlet and d outlet respectively, and measure the pressure value of the detection casing through the pressure measuring device;
计算所述 b入口和 d出口处的 60秒压降值为 Pb4和 Pd4; Calculate the 60-second pressure drop values at the b inlet and d outlet as P b4 and P d4;
计算检测套管的 60秒压降值为 Calculate the 60-second pressure drop value of the detection casing as
当 Pb3-Prl 0.01KPa且 Pb4-Pr2 0.01KPa时，则证明所述检测套管气 密性良好； When P b3 -P rl 0.01KPa and P b4 -P r2 0.01KPa, it proves that the air tightness of the detection casing is good;
当？<11 0.1 ？3且？¾3 0.1 ？3且？154 5 ？3且？(14 5 ？3时， 则证 明所述继动阀气密性良好。 when? <11 0.1? 3 And? ¾3 0.1 ? 3 And? 154 5? 3 And? (14 5? 3, it proves that the air tightness of the relay valve is good.
PCT/CN2013/088956 2012-12-14 2013-12-10 Device, system and method for detecting air tightness of backup brake system of high-speed motor train unit WO2014090134A1 (en)

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