Test system of altitude valve and differential pressure valve for railway vehicle

Abstract

The invention relates to the technical field of railway vehicles, and provides a railway vehicle altitude valve and differential pressure valve test system, a differential pressure valve test module is connected with a first gas supply module, an altitude valve test module is connected with a second gas supply module, and a gas source control member is connected between the first gas supply module and the second gas supply module. And the two gas supply modules are connected or disconnected. By arranging the two air supply modules, the differential pressure valve test module and the differential height valve test module and cooperating with the air source control piece which can be switched between the connection state and the cut-off state, independent test of the height valve or the differential pressure valve and simultaneous test of the two types of valves can be flexibly achieved, and the detection efficiency is remarkably improved. And meanwhile, gas circuits do not need to be disassembled or changed when the types of the test valves are switched, and time and labor are saved. In addition, the two air supply modules can supply air independently, it is guaranteed that independent testing or independent air supply type simultaneous testing does not interfere with each other, and the testing stability is improved; mutual complementary air supply can also be realized, and sufficient and stable air volume is provided for synchronous testing.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and in particular to a testing system for height valves and differential pressure valves used in rail vehicles. Background Technology

[0002] Height valves and differential pressure valves are key components of rail vehicles, and their performance directly affects the safety, smoothness, and reliability of vehicle operation. The performance of height valves and differential pressure valves needs to be tested before installation on the vehicle.

[0003] Current testing systems typically only allow testing of one valve among the height valve and differential pressure valve, and cannot test both simultaneously, resulting in low testing efficiency. Furthermore, when the type of test valve needs to be changed, the test air path needs to be adjusted accordingly, which is time-consuming and labor-intensive. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a testing system for height valves and differential pressure valves used in rail vehicles.

[0005] This invention provides a testing system for a height valve and a differential pressure valve for rail vehicles, comprising: a first air supply module; a differential pressure valve testing module connected to the first air supply module; a second air supply module; a height valve testing module connected to the second air supply module; and an air source control component connected between the first air supply module and the second air supply module, used to connect or disconnect the first air supply module and the second air supply module.

[0006] According to the present invention, a testing system for a height valve and a differential pressure valve for rail vehicles further includes: a first pressure regulating valve, which is used to regulate the test pressure of the differential pressure valve testing module; and a second pressure regulating valve, which is used to regulate the test pressure of the height valve testing module.

[0007] According to the present invention, a testing system for a height valve and a differential pressure valve for rail vehicles is provided. The first air supply module includes: a first air source; a first air supply path, the first air supply path being connected between the first air source and the differential pressure valve testing module; and a first air supply control valve, the first air supply control valve being disposed on the first air supply path.

[0008] The second air supply module includes: a second air source; a second air supply path connected between the second air source and the height valve testing module; a second air supply control valve disposed on the second air supply path; a third air supply path connected between the second air source and the height valve testing module, and disposed in parallel with the second air supply path; a pressurization device disposed on the third air supply path; and a third air supply control valve disposed on the third air supply path.

[0009] According to the present invention, a testing system for a height valve and a differential pressure valve for rail vehicles is provided. The differential pressure valve testing module includes: a first differential pressure testing air path, a first end of which is connected to a first air supply air path, and a second end of which is used to connect to port A of the differential pressure valve to be tested; a second differential pressure testing air path, a first end of which is connected to the first air supply air path, and a second end of which is used to connect to port B of the differential pressure valve to be tested; a first pressure sensor, disposed at the second end of the first differential pressure testing air path; a second pressure sensor, disposed at the second end of the second differential pressure testing air path; a first differential pressure testing control valve, disposed at the second end of the first differential pressure testing air path; and a second differential pressure testing control valve, disposed at the second end of the second differential pressure testing air path.

[0010] According to the present invention, a testing system for a height valve and a differential pressure valve for rail vehicles is provided. The differential pressure valve testing module further includes: a third differential pressure test control valve disposed at a first end of a first differential pressure test air path; a fourth differential pressure test control valve disposed at a first end of a second differential pressure test air path; a first differential pressure test air cylinder disposed on the first differential pressure test air path and located between the first differential pressure test control valve and the third differential pressure test control valve; a second differential pressure test air cylinder disposed on the second differential pressure test air path and located between the second differential pressure test control valve and the fourth differential pressure test control valve; a fifth differential pressure test control valve disposed on the first differential pressure test air path and located between the third differential pressure test control valve and the first differential pressure test air cylinder; and a sixth differential pressure test control valve disposed on the second differential pressure test air path and located between the fourth differential pressure test control valve and the second differential pressure test air cylinder.

[0011] According to the present invention, a testing system for a height valve and a differential pressure valve for rail vehicles is provided. The differential pressure valve testing module further includes: a third pressure sensor connected to the first differential pressure test cylinder; and a fourth pressure sensor connected to the second differential pressure test cylinder.

[0012] According to the present invention, a testing system for a height valve and a differential pressure valve for rail vehicles is provided. The height valve testing module includes: a first height testing air passage section, the first end of which is connected to a second air supply module, and the second end of which is connected to port A of the height valve to be tested; a second height testing air passage section, the second end of which is connected to port B of the height valve to be tested; a height valve testing air cylinder assembly, which is connected to the first end of the second height testing air passage section; a first height testing control valve, which is disposed in the first height testing air passage section; a second height testing control valve, which is disposed in the second height testing air passage section; a fifth pressure sensor, which is disposed in the second end of the first height testing air passage section; and a sixth pressure sensor, which is disposed in the second end of the second height testing air passage section.

[0013] According to the present invention, a testing system for a height valve and a differential pressure valve for rail vehicles is provided. The height valve test cylinder assembly includes: multiple test cylinder branches, each of which is connected in parallel and connected in series with a second height test air passage; and a test cylinder control valve assembly, which is connected to each of the test cylinder branches and is used to independently control the connection state between each of the test cylinder branches and the second height test air passage.

[0014] According to the present invention, a testing system for a height valve and a differential pressure valve for rail vehicles is provided. The height valve testing module further includes: an airtightness testing air path, the first end of which is connected in parallel with the first end of the first height testing air path section, and the second end of which is connected in parallel with the first end of the second height testing air path section; and an airtightness testing control valve disposed in the airtightness testing air path.

[0015] The testing system further includes a height valve test air supply control valve, which is located between the second air supply module and the height valve test module.

[0016] A testing system for a height valve and a differential pressure valve for rail vehicles according to the present invention further includes: a barcode scanner for scanning the model QR code of the height valve and the differential pressure valve to be tested; and a controller connected to the barcode scanner, the first air supply module, the second air supply module, the differential pressure valve testing module, the height valve testing module, and the air source control component, and for controlling the working state of the first air supply module, the second air supply module, the differential pressure valve testing module, the height valve testing module, and the air source control component based on the scanning result of the barcode scanner.

[0017] The testing system for height valves and differential pressure valves for rail vehicles provided by this invention includes a first air supply module, a differential pressure valve testing module, a second air supply module, a height valve testing module, and an air source control component. The differential pressure valve testing module is connected to the first air supply module, the height valve testing module is connected to the second air supply module, and the air source control component is connected between the first air supply module and the second air supply module to connect or disconnect the first air supply module and the second air supply module.

[0018] For example, the air supply control component can be a solenoid directional valve, which includes an on position and a off position.

[0019] When in the off position, the first and second air supply modules are mutually shut off and operate independently. The first air supply module can supply air to the differential pressure valve test module independently, enabling independent testing of the differential pressure valve; the second air supply module can supply air to the height valve test module independently, enabling independent testing of the height valve; if the air volume of the first and second air supply modules is sufficient, they can also be activated simultaneously, provided that the two air supply lines are independent, to independently supply air to the corresponding test modules, enabling simultaneous testing of the height valve and the differential pressure valve.

[0020] When in the connected position, the first air supply module and the second air supply module are interconnected, and the two can jointly supply air to the differential pressure valve test module and the height valve test module. When the two types of valves are tested at the same time, sufficient and stable air volume can be guaranteed.

[0021] This testing system, by independently configuring a first air supply module, a second air supply module, and corresponding differential pressure valve testing modules and height valve testing modules, and utilizing an air source control component that can switch between connected and disconnected states, can flexibly perform individual testing of height valves, individual testing of differential pressure valves, and simultaneous testing of both types of valves, effectively improving the testing efficiency of the system. Furthermore, switching between test valve types does not require disassembly or modification of the test air circuit, simplifying the operation process and saving time and manpower. In addition, the two air supply modules can supply air independently to ensure that individual testing or simultaneous testing with independent air supply does not interfere with each other, making the testing process stable and reliable; the two air supply modules can also complement each other to provide sufficient and stable airflow for simultaneous testing of the differential pressure valve testing module and the height valve testing module. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a system schematic diagram of the testing system for height valves and differential pressure valves for rail vehicles provided by the present invention.

[0024] Figure 2 This invention provides a partial system principle of the testing system for height valves and differential pressure valves used in rail vehicles. Figure 1 .

[0025] Figure 3 This invention provides a partial system principle of the testing system for height valves and differential pressure valves used in rail vehicles. Figure 2 .

[0026] Reference numerals: 110, First air source; 120, First air supply path; 130, First air supply control valve; 210, Second air source; 220, Second air supply path; 230, Second air supply control valve; 240, Third air supply path; 250, Pressure boosting device; 260, Third air supply control valve; 310, First differential pressure test path; 320, Second differential pressure test path; 331, First pressure sensor; 332, Second pressure sensor; 333, Third pressure sensor; 334, Fourth pressure sensor; 341, First differential pressure test control valve; 342, Second differential pressure test control valve; 343, Third differential pressure test control valve; 344, Fourth differential pressure test control valve; 345, Fifth differential pressure test control valve; 346, Sixth differential pressure test control valve; 351. Differential pressure test control valve; 352. Differential pressure test air cylinder; 410. First height test air circuit; 420. Second height test air circuit; 430. Height valve test air cylinder assembly; 431. Test air cylinder branch; 432. Test air cylinder control valve assembly; 441. First height test control valve; 442. Second height test control valve; 451. Fifth pressure sensor; 452. Sixth pressure sensor; 460. Air tightness test air circuit; 470. Air tightness test control valve; 480. Height valve test air supply control valve; 500. Air source control component; 610. First pressure regulating valve; 620. Second pressure regulating valve; 700. Gas processor; 810. Differential pressure valve to be tested; 820. Height valve to be tested. Detailed Implementation

[0027] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0030] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples and features of different embodiments or examples described in this specification to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The following is combined Figures 1 to 3 This invention describes a testing system for a height valve and differential pressure valve for rail vehicles, provided by an embodiment of the present invention. It should be understood that the following description is merely an illustrative embodiment of the invention and does not constitute any particular limitation on the invention.

[0033] Embodiments of the present invention provide a testing system for height valves and differential pressure valves used in rail vehicles, such as... Figures 1 to 3It includes: a first air supply module; a differential pressure valve test module connected to the first air supply module; a second air supply module; a height valve test module connected to the second air supply module; and an air source control component 500 connected between the first air supply module and the second air supply module for connecting or disconnecting the first air supply module and the second air supply module.

[0034] In other words, the testing system for the height valve and differential pressure valve for rail vehicles provided by this invention includes a first air supply module, a differential pressure valve testing module, a second air supply module, a height valve testing module, and an air source control component 500. The differential pressure valve testing module is connected to the first air supply module, the height valve testing module is connected to the second air supply module, and the air source control component 500 is connected between the first air supply module and the second air supply module, used to connect or disconnect the first air supply module and the second air supply module.

[0035] For example, the gas source control component 500 can be a solenoid directional valve, which includes an on position and a off position.

[0036] When in the off position, the first and second air supply modules are mutually shut off and operate independently. The first air supply module can supply air to the differential pressure valve test module independently, enabling independent testing of the differential pressure valve; the second air supply module can supply air to the height valve test module independently, enabling independent testing of the height valve; if the air volume of the first and second air supply modules is sufficient, they can also be activated simultaneously, provided that the two air supply lines are independent, to independently supply air to the corresponding test modules, enabling simultaneous testing of the height valve and the differential pressure valve.

[0037] When in the connected position, the first air supply module and the second air supply module are interconnected, and the two can jointly supply air to the differential pressure valve test module and the height valve test module. When the two types of valves are tested at the same time, sufficient and stable air volume can be guaranteed.

[0038] This testing system, through the independent setup of a first air supply module, a second air supply module, and corresponding differential pressure valve testing modules and height valve testing modules, and utilizing an air source control component 500 that can switch between connected and disconnected states, can flexibly perform individual testing of height valves, individual testing of differential pressure valves, and simultaneous testing of both types of valves, effectively improving the testing efficiency of the system. Furthermore, switching between test valve types requires no disassembly or modification of the test air circuit, simplifying the operation process and saving time and manpower. In addition, the two air supply modules can supply air independently to ensure that individual testing or simultaneous testing with independent air supply does not interfere with each other, making the testing process stable and reliable; the two air supply modules can also complement each other to provide sufficient and stable airflow for simultaneous testing of the differential pressure valve testing module and the height valve testing module.

[0039] In one embodiment of the present invention, the testing system further includes: a first pressure regulating valve 610, which is used to regulate the test pressure of the differential pressure valve testing module; and a second pressure regulating valve 620, which is used to regulate the test pressure of the height valve testing module.

[0040] Furthermore, in one embodiment of the present invention, the first air supply module includes: a first air source 110; a first air supply passage 120, the first air supply passage 120 being connected between the first air source 110 and the differential pressure valve test module; and a first air supply control valve 130, the first air supply control valve 130 being disposed on the first air supply passage 120.

[0041] The second air supply module includes: a second air source 210; a second air supply passage 220, which is connected between the second air source 210 and the height valve test module; a second air supply control valve 230, which is installed on the second air supply passage 220; a third air supply passage 240, which is connected between the second air source 210 and the height valve test module and is installed in parallel with the second air supply passage 220; a booster device 250, which is installed on the third air supply passage 240; and a third air supply control valve 260, which is installed on the third air supply passage 240.

[0042] Specifically, for example, the first gas supply module includes a first air source 110, a first gas supply passage 120, and a first gas supply control valve 130. The first gas supply passage 120 is connected between the first air source 110 and the differential pressure valve test module. The first gas supply control valve 130 is installed on the first gas supply passage 120 to control the on / off state of the first gas supply passage 120. The first gas supply passage 120 is also equipped with a gas processor 700, which can filter, dry, and stabilize the gas output from the first air source 110 to ensure that the gas entering the differential pressure valve test module is clean, dry, and has stable pressure.

[0043] The second air supply module includes a second air source 210, a second air supply passage 220, a second air supply control valve 230, a third air supply passage 240, a pressurization device 250, and a third air supply control valve 260. The second air supply passage 220 and the third air supply passage 240 are connected in parallel between the second air source 210 and the height valve test module. The second air supply control valve 230 is installed on the second air supply passage 220, and the third air supply control valve 260 and the pressurization device 250 are installed on the third air supply passage 240. Gas processors 700 can also be installed on the second air supply passage 220 and the third air supply passage 240 to purify, dry, and stabilize the gas output from the second air source 210.

[0044] During routine pressure testing, the second air supply line 220 can be opened and the third air supply line 240 can be closed, allowing the second air source 210 to directly supply air to the height valve test module. When high-pressure testing is required, the third air supply line 240 can be opened, and the supply pressure can be increased through the booster device 250 to meet the high-pressure test requirements of different height valves. By setting up parallel routine and booster air supply lines, and cooperating with the pressure regulating valve and gas processor 700, the test system can operate stably under different pressure levels and test conditions, further expanding the pressure application range.

[0045] A first pressure regulating valve 610 is installed between the first air supply line 120 and the differential pressure valve test module to regulate the test pressure entering the differential pressure valve test module; a second pressure regulating valve 620 is installed between the second air supply line 220 and the height valve test module to regulate the test pressure entering the height valve test module, so that the test system can be adapted to different models and pressure levels of height valves and differential pressure valves, thereby improving the versatility and test accuracy of the test system.

[0046] In one embodiment of the present invention, the differential pressure valve testing module includes: a first differential pressure testing gas path 310, the first end of which is connected to a first gas supply path 120, and the second end of which is used to connect to port A of the differential pressure valve 810 under test; a second differential pressure testing gas path 320, the first end of which is connected to the first gas supply path 120, and the second end of which is used to connect to port B of the differential pressure valve 810 under test; a first pressure sensor 331, which is disposed at the second end of the first differential pressure testing gas path 310; a second pressure sensor 332, which is disposed at the second end of the second differential pressure testing gas path 320; a first differential pressure testing control valve 341, which is disposed at the second end of the first differential pressure testing gas path 310; and a second differential pressure testing control valve 342, which is disposed at the second end of the second differential pressure testing gas path 320.

[0047] In one embodiment of the present invention, the differential pressure valve testing module further includes: a third differential pressure test control valve 343, which is disposed at the first end of the first differential pressure test air path 310; a fourth differential pressure test control valve 344, which is disposed at the first end of the second differential pressure test air path 320; a first differential pressure test air cylinder 351, which is disposed on the first differential pressure test air path 310 and located between the first differential pressure test control valve 341 and the third differential pressure test control valve 343; and a second differential pressure test air cylinder 352, which is disposed on the first differential pressure test air path 310 and located between the first differential pressure test control valve 341 and the third differential pressure test control valve 343; and a second differential pressure test air cylinder 352, which is disposed at the first end of the second differential pressure test air path 320. The differential pressure test air cylinder 352 is installed on the second differential pressure test air circuit 320 and is located between the second differential pressure test control valve 342 and the fourth differential pressure test control valve 344; the fifth differential pressure test control valve 345 is installed on the first differential pressure test air circuit 310 and is located between the third differential pressure test control valve 343 and the first differential pressure test air cylinder 351; the sixth differential pressure test control valve 346 is installed on the second differential pressure test air circuit 320 and is located between the fourth differential pressure test control valve 344 and the second differential pressure test air cylinder 352.

[0048] Furthermore, in one embodiment of the present invention, the differential pressure valve testing module further includes: a third pressure sensor 333, which is connected to the first differential pressure testing cylinder 351; and a fourth pressure sensor 334, which is connected to the second differential pressure testing cylinder 352.

[0049] Specifically, such as Figure 1 and Figure 2 As shown, the differential pressure valve test module includes a first differential pressure test air path 310, a second differential pressure test air path 320, a first pressure sensor 331, a second pressure sensor 332, a first differential pressure test control valve 341, a second differential pressure test control valve 342, a third differential pressure test control valve 343, a fourth differential pressure test control valve 344, a fifth differential pressure test control valve 345, a sixth differential pressure test control valve 346, a first differential pressure test air cylinder 351, a second differential pressure test air cylinder 352, a third pressure sensor 333, and a fourth pressure sensor 334.

[0050] The first differential pressure test air path 310 is connected at its first end to the first air supply air path 120, and at its second end to the port A of the differential pressure valve 810 under test. The second differential pressure test air path 320 is connected at its first end to the first air supply air path 120, and at its second end to the port B of the differential pressure valve 810 under test. The first end of the first differential pressure test air path 310 is equipped with a third differential pressure test control valve 343, and the second end is equipped with a first differential pressure test control valve 341. The first end of the second differential pressure test air path 320 is equipped with a fourth differential pressure test control valve 344, and the second end is equipped with a second differential pressure test control valve 342. A first pressure sensor 331 is located at the second end of the first differential pressure test air path 310 and is used to collect the pressure at port A of the differential pressure valve 810 under test. A second pressure sensor 332 is located at the second end of the second differential pressure test air path 320 and is used to collect the pressure at port B of the differential pressure valve 810 under test.

[0051] The first differential pressure test air path 310 is also equipped with a fifth differential pressure test control valve 345 and a first differential pressure test air cylinder 351. The fifth differential pressure test control valve 345 is located between the third differential pressure test control valve 343 and the first differential pressure test air cylinder 351, and the first differential pressure test air cylinder 351 is located between the fifth differential pressure test control valve 345 and the first differential pressure test control valve 341. The second differential pressure test air path 320 is equipped with a sixth differential pressure test control valve 346 and a second differential pressure test air cylinder 352. The sixth differential pressure test control valve 346 is located between the fourth differential pressure test control valve 344 and the second differential pressure test air cylinder 352, and the second differential pressure test air cylinder 352 is located between the sixth differential pressure test control valve 346 and the second differential pressure test air cylinder 342. The first differential pressure test air cylinder 351 is connected to a third pressure sensor 333, and the second differential pressure test air cylinder 352 is connected to a fourth pressure sensor 334, for real-time monitoring of the pressure in the corresponding air cylinders.

[0052] For example, when conducting a differential pressure valve airtightness test, first connect the A port and B port of the differential pressure valve 810 under test to the second end of the first differential pressure test air path 310 and the second end of the second differential pressure test air path 320, respectively; connect the first differential pressure test control valve 341, the second differential pressure test control valve 342, the third differential pressure test control valve 343, the fourth differential pressure test control valve 344, the fifth differential pressure test control valve 345, and the sixth differential pressure test control valve 346 so that the first air supply air path 120 can independently or jointly supply air to the differential pressure valve 810 under test; when the first pressure sensor 331 and the second pressure sensor 332 stabilize to the target pressure value, close the first differential pressure test control valve 341 and the second differential pressure test control valve 342, and determine the airtightness of the differential pressure valve 810 under test based on the pressure change of the first pressure sensor 331 and the second pressure sensor 332.

[0053] When performing the forward differential pressure test of the differential pressure valve, connect the third differential pressure test control valve 343 and the fifth differential pressure test control valve 345, and cut off the first differential pressure test control valve 341 and the fourth differential pressure test control valve 344 to inflate the first differential pressure test air cylinder 351; after the pressure indication of the third pressure sensor 333 stabilizes at the target pressure value, cut off the third differential pressure test control valve 343 and connect the first differential pressure test control valve 341 and the second differential pressure test control valve 342, so that the first differential pressure test air cylinder 351 fills the second differential pressure test air cylinder 352 through the differential pressure valve 810 to be tested. After the pressure values of the third pressure sensor 333 and the fourth pressure sensor 334 stabilize, calculate whether the pressure difference between the two is within the qualified threshold.

[0054] When performing the reverse differential pressure test of the differential pressure valve, connect the fourth differential pressure test control valve 344 and the sixth differential pressure test control valve 346, and cut off the second differential pressure test control valve 342 and the third differential pressure test control valve 343 to inflate the second differential pressure test air cylinder 352; after the pressure indication of the fourth pressure sensor 334 stabilizes at the target pressure value, cut off the fourth differential pressure test control valve 344 and connect the second differential pressure test control valve 342 and the first differential pressure test control valve 341, so that the second differential pressure test air cylinder 352 fills the first differential pressure test air cylinder 351 through the differential pressure valve 810 to be tested. After the pressure values of the third pressure sensor 333 and the fourth pressure sensor 334 stabilize, calculate whether the pressure difference between the two is within the qualified threshold.

[0055] It should be noted that when performing the forward and reverse differential pressure tests of a normal differential pressure valve, each set of forward differential pressure tests and reverse differential pressure measurements is a complete measurement. If multiple complete measurements meet the requirements, it is considered that this test is qualified. For example, if 3 complete measurements meet the requirements, it is considered that this test is qualified.

[0056] In addition, the differential pressure valve testing module can also perform gas circuit self-test. During the gas circuit self-test, the differential pressure valve 810 under test is not connected first. The second end of the first differential pressure test gas circuit 310 and the second end of the second differential pressure test gas circuit 320 are both closed. The first differential pressure test control valve 341, the second differential pressure test control valve 342, the third differential pressure test control valve 343, the fourth differential pressure test control valve 344, the fifth differential pressure test control valve 345, and the sixth differential pressure test control valve 346 are all opened for air charging. After the air charging is completed, the third differential pressure test control valve 343 and the fourth differential pressure test control valve 344 are closed. Observe the change in the pressure value of any one of the pressure sensors 331, 332, 333, and 334. If it remains unchanged, it indicates that the gas circuit is airtight. If the pressure value decreases, it indicates that there is a leakage problem in the gas circuit. Subsequently, by adjusting the states of the first differential pressure test control valve 341, the second differential pressure test control valve 342, the third differential pressure test control valve 343, the fourth differential pressure test control valve 344, the fifth differential pressure test control valve 345, and the sixth differential pressure test control valve 346, the location of the gas leakage point can be accurately determined.

[0057] In one embodiment of the present invention, the height valve testing module includes: a first height testing air passage 410, a first end of which is connected to a second air supply module, and a second end of which is used to connect to port A of the height valve 820 to be tested; a second height testing air passage 420, the second end of which is used to connect to port B of the height valve 820 to be tested; and a height valve testing air cylinder assembly 430, wherein the height valve testing air cylinder assembly 430 is connected to the second height testing air passage 420. The first end of the device is connected to: a first altitude test control valve 441, which is located in the first altitude test air passage 410; a second altitude test control valve 442, which is located in the second altitude test air passage 420; a fifth pressure sensor 451, which is located at the second end of the first altitude test air passage 410; and a sixth pressure sensor 452, which is located at the second end of the second altitude test air passage 420.

[0058] In one embodiment of the present invention, the height valve test air cylinder assembly 430 includes: a plurality of test air cylinder branches 431, each test air cylinder branch 431 being arranged in parallel with each other and each being connected in series with the second height test air passage section 420; and a test air cylinder control valve assembly 432, which is connected to each test air cylinder branch 431 and is used to independently control the connection state between each test air cylinder branch 431 and the second height test air passage section 420.

[0059] In another embodiment of the present invention, the height valve test module further includes: an airtightness test air passage 460, the first end of which is connected in parallel with the first end of the first height test air passage section 410, and the second end of which is connected in parallel with the first end of the second height test air passage section 420; and an airtightness test control valve 470, which is disposed in the airtightness test air passage 460.

[0060] The testing system also includes a height valve test air supply control valve 480, which is located between the second air supply module and the height valve test module.

[0061] Specifically, such as Figure 1 and Figure 3 As shown, the height valve test module includes a first height test air path section 410, a second height test air path section 420, a height valve test air cylinder assembly 430, a first height test control valve 441, a second height test control valve 442, a fifth pressure sensor 451, a sixth pressure sensor 452, an airtightness test air path 460, and an airtightness test control valve 470. The test system also includes a height valve test air supply control valve 480.

[0062] The first end of the first height test air passage 410 is connected to the second air supply module via the height valve test air supply control valve 480, and the second end of the first height test air passage 410 is connected to port A of the height valve 820 to be tested. The second end of the second height test air passage 420 is connected to port B of the height valve 820 to be tested, and the first end of the second height test air passage 420 is connected to the height valve test air cylinder assembly 430. A first height test control valve 441 is located in the first height test air passage 410, and a second height test control valve 442 is located in the second height test air passage 420, respectively used to control the on / off state of the corresponding air passages. A fifth pressure sensor 451 is located at the second end of the first height test air passage 410 to collect the pressure at port A of the height valve 820 to be tested; a sixth pressure sensor 452 is located at the second end of the second height test air passage 420 to collect the pressure at port B of the height valve 820 to be tested, enabling real-time monitoring of the pressure at both ends of the height valve.

[0063] The height valve test cylinder assembly 430 includes multiple test cylinder branches 431 connected in parallel and a test cylinder control valve assembly 432. Each test cylinder branch 431 includes a test air path and a test cylinder disposed on that test air path. The test air paths are connected in parallel and are all connected in series with the second height test air path section 420. The test cylinder control valve assembly 432 includes multiple test cylinder control valves corresponding to each test air path. Each test cylinder control valve is used to control the connection state of its corresponding test cylinder and the second height test air path section 420. The test cylinders have different volumes to meet the performance testing requirements of the height valve under different load volumes, or to meet the testing requirements of different models of height valves.

[0064] During the airtightness test of the height valve, the height valve test air supply control valve 480 and the first height test control valve 441 are connected, while the second height test control valve 442 and the airtightness test control valve 470 are closed to supply air to the height valve 820 under test. When the pressure value of the fifth pressure sensor 451 reaches the target pressure value, the height valve test air supply control valve 480 and the first height test control valve 441 are closed to stabilize the pressure. After the pressure stabilizes, the leakage of the height valve is determined by the pressure value change of the fifth pressure sensor 451.

[0065] During the blind zone test of the height valve, the height valve test air supply control valve 480 and the first height test control valve 441 are connected, while the second height test control valve 442 and the airtightness test control valve 470 are closed to supply air to the height valve 820 under test. When the pressure value of the fifth pressure sensor 451 reaches the target pressure value, the actuator at the end of the air circuit pushes the end of the height valve lever. When the lever rotates from the center position to the air supply position, that is, when the sixth pressure sensor 452 shows a pressure reading, the height value is recorded as h1. The lever is continued to be pushed, and when the pressure value of the sixth pressure sensor 452 begins to decrease, the height value is recorded as h2. It is then determined whether h1, h2, and h1+h2 meet the test requirements.

[0066] During the time delay test of the height valve, the height valve test air supply control valve 480 and the first height test control valve 441 are connected, while the second height test control valve 442 and the airtightness test control valve 470 are closed to supply air to the height valve 820 under test. When the pressure value of the fifth pressure sensor 451 reaches the target pressure value, the air circuit end actuator pushes the end of the height valve lever, causing the height valve lever to rise or fall rapidly by the target value, for example, causing the height valve lever to rise or fall rapidly by 20mm. The test checks whether the time required for the pressure value of the fifth pressure sensor 451 to start falling from the original target value meets the requirements.

[0067] When conducting the airflow test on the height valve, a suitable test air cylinder branch 431 needs to be selected and connected via the test air cylinder control valve group 432. The height valve test air supply control valve 480, the first height test control valve 441, and the second height test control valve 442 are connected, while the airtightness test control valve 470 is shut off, to supply air to the height valve 820 under test. When the pressure value of the fifth pressure sensor 451 reaches the target pressure value, the air circuit end actuator pushes the end of the height valve lever, causing the lever to move to a certain position, for example, moving the lever up 20mm from the horizontal position. The time required for the pressure value of the test air cylinder on the corresponding test air cylinder branch 431 to rise from 0 to the preset value is then checked to see if it meets the requirements. For example, if the set value of the second pressure regulating valve 620 is 500kPa and the target pressure value of the fifth pressure sensor 451 is 500kPa, the time required for the pressure value of the test air cylinder on the corresponding test air cylinder branch 431 to rise from 0 to 200kPa can be checked to see if it meets the requirements.

[0068] During the venting flow test of the height valve, the height valve test air supply control valve 480, the first height test control valve 441, and the second height test control valve 442 are connected, while the airtightness test control valve 470 is closed, to supply air to the height valve 820 under test. When the pressure value of the fifth pressure sensor 451 reaches the target pressure value, the actuator at the end of the air path pushes the end of the height valve lever, causing the lever to move to a certain position, for example, causing the lever to move down 20mm from the horizontal position. The time required for the pressure value of the test cylinder on the corresponding test cylinder branch 431 to drop from the target value to the preset value is then checked to see if it is qualified. For example, if the set value of the second pressure regulating valve 620 is 500kPa and the target pressure value of the fifth pressure sensor 451 is 500kPa, the time required for the pressure value of the test cylinder on the corresponding test cylinder branch 431 to drop from 500kPa to 300kPa can be checked to see if it is qualified.

[0069] Furthermore, the height valve test module can perform corresponding air tightness tests. During the air tightness test, it is not necessary to install the height valve 820 under test; simply block the second end of the first height test air passage section 410 and the second end of the second height test air passage section 420. Connect the height valve test air supply control valve 480, the first height test control valve 441, the second height test control valve 442, and the air tightness test control valve 470 to charge air into the corresponding air passage. After charging, shut off the height valve test air supply control valve 480. If the pressure values ​​of the fifth pressure sensor 451 and the sixth pressure sensor 452 remain unchanged, it indicates that the air tightness of the air passage is good. If the pressure value of the fifth pressure sensor 451 or the sixth pressure sensor decreases, it indicates that there is an air leak. At this time, by adjusting the operating state of the first height test control valve 441, the second height test control valve 442, and the air tightness test control valve 470, the location of the air leak can be accurately determined.

[0070] In one embodiment of the present invention, the testing system further includes: a barcode scanner for scanning the model QR codes of the height valve 820 and the differential pressure valve 810 under test; and a controller connected to the barcode scanner, the first air supply module, the second air supply module, the differential pressure valve testing module, the height valve testing module, and the air source control component 500, and for controlling the working status of the first air supply module, the second air supply module, the differential pressure valve testing module, the height valve testing module, and the air source control component 500 based on the scanning results of the barcode scanner.

[0071] More specifically, the controller includes an industrial computer and a PLC connected to the industrial computer via signals. The industrial computer, as the upper control unit of the system, is used to realize human-machine interaction, parameter configuration, data processing, data storage, and report generation. The PLC, as the lower control unit, is used to receive control commands from the industrial computer and drive each solenoid valve, air supply module, and test module to perform corresponding actions according to the commands, thereby forming an automated control architecture that coordinates the upper and lower control units.

[0072] The barcode scanner is connected to the industrial control computer and is used to scan the model QR codes on the height valve 820 and differential pressure valve 810 under test. It automatically identifies the model, specifications, rated working pressure, applicable standards and preset test items of the valves under test, and uploads the identification results to the industrial control computer. This realizes automatic identification of the workpieces under test and automatic matching of test items, avoids errors caused by manual input, and improves the intelligence level of the testing system.

[0073] The industrial control computer also has personnel identification function. Testers can verify their identity by logging in with an account and password, swiping a card, or facial recognition. The industrial control computer assigns operation permissions, parameter modification permissions, and data viewing permissions to different personnel according to preset permissions, so as to realize standardized management and traceability of the test process.

[0074] The PLC is electrically connected to the first air supply module, the second air supply module, the differential pressure valve test module, the height valve test module, and each control valve and pressure sensor in the air source control component 500. During the test, the industrial control computer automatically calls up the corresponding test process and test parameters based on the valve model identified by the barcode scanner. The PLC automatically controls the start and stop of each air supply module, adjusts the pressure, and controls the on / off sequence of the control valves in each test air path. It automatically completes automated tests for items such as air tightness, differential pressure characteristics, blind zone, time delay, forward flow, and reverse flow without manual intervention.

[0075] During testing, the PLC collects pressure signals, action time, and pressure drop data from each pressure sensor in real time and uploads them to the industrial control computer. The industrial control computer processes, analyzes, and judges the collected data in real time, automatically determining whether the various performance indicators of the valve under test are qualified, and automatically generates a test data table. The test data table includes information such as valve model, serial number, test time, test personnel, test data for each item, and judgment results. It can realize data storage, query, export, printing, and long-term traceability, improving the integrity and standardization of test data.

[0076] Through the above settings, this testing system integrates barcode scanning and recognition, personnel access control, PLC automation control, industrial computer data processing and report generation, realizing full automation and intelligence of the entire process of valve identification, test process execution, data acquisition and analysis, result judgment and report output, which greatly improves testing efficiency and accuracy and reduces the intensity of manual operation.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A testing system for height valves and differential pressure valves used in rail vehicles, characterized in that, include: First gas supply module; A differential pressure valve testing module, which is connected to the first gas supply module; Second gas supply module; A height valve testing module, which is connected to the second air supply module; A gas source control unit (500) is connected between the first gas supply module and the second gas supply module, and is used to connect or disconnect the first gas supply module and the second gas supply module.

2. The testing system for height valves and differential pressure valves for rail vehicles according to claim 1, characterized in that, The testing system also includes: The first pressure regulating valve (610) is used to regulate the test pressure of the differential pressure valve test module; The second pressure regulating valve (620) is used to regulate the test pressure of the height valve test module.

3. The testing system for height valves and differential pressure valves for rail vehicles according to claim 2, characterized in that, The first gas supply module includes: First wind source (110); The first air supply line (120) is connected between the first air source (110) and the differential pressure valve test module; The first gas supply control valve (130) is installed on the first gas supply passage (120); The second gas supply module includes: Second wind source (210); The second air supply circuit (220) is connected between the second air source (210) and the height valve test module; The second gas supply control valve (230) is installed on the second gas supply passage (220); The third air supply circuit (240) is connected between the second air source (210) and the height valve test module, and is set in parallel with the second air supply circuit (220); A booster device (250) is provided on the third air supply line (240); The third gas supply control valve (260) is installed on the third gas supply passage (240).

4. The testing system for height valves and differential pressure valves for rail vehicles according to claim 3, characterized in that, The differential pressure valve testing module includes: The first differential pressure test air path (310) is connected to the first air supply air path (120) at its first end and to the second end of the first differential pressure test air path (310) at its second end. The second end of the first differential pressure test air path (310) is used to connect to the A port of the differential pressure valve (810) to be tested. The second differential pressure test air path (320) is connected at its first end to the first air supply air path (120), and at its second end to the B port of the differential pressure valve (810) to be tested. The first pressure sensor (331) is disposed at the second end of the first differential pressure test gas path (310); The second pressure sensor (332) is disposed at the second end of the second differential pressure test gas path (320); The first differential pressure test control valve (341) is located at the second end of the first differential pressure test gas path (310); The second differential pressure test control valve (342) is located at the second end of the second differential pressure test gas path (320).

5. The testing system for height valves and differential pressure valves for rail vehicles according to claim 4, characterized in that, The differential pressure valve testing module also includes: The third differential pressure test control valve (343) is located at the first end of the first differential pressure test gas path (310); The fourth differential pressure test control valve (344) is disposed at the first end of the second differential pressure test gas path (320); The first differential pressure test air cylinder (351) is disposed on the first differential pressure test air circuit (310) and located between the first differential pressure test control valve (341) and the third differential pressure test control valve (343); The second differential pressure test air cylinder (352) is disposed on the second differential pressure test air path (320) and located between the second differential pressure test control valve (342) and the fourth differential pressure test control valve (344); The fifth differential pressure test control valve (345) is installed on the first differential pressure test air path (310) and located between the third differential pressure test control valve (343) and the first differential pressure test air cylinder (351). The sixth differential pressure test control valve (346) is installed on the second differential pressure test air path (320) and located between the fourth differential pressure test control valve (344) and the second differential pressure test air cylinder (352).

6. The testing system for height valves and differential pressure valves for rail vehicles according to claim 5, characterized in that, The differential pressure valve testing module also includes: The third pressure sensor (333) is connected to the first differential pressure test cylinder (351); A fourth pressure sensor (334) is connected to the second differential pressure test cylinder (352).

7. The testing system for height valves and differential pressure valves for rail vehicles according to any one of claims 1 to 6, characterized in that, The height valve testing module includes: The first height test air circuit section (410) has a first end connected to the second air supply module and a second end connected to the A port of the height valve (820) to be tested. The second end of the second height test air circuit (420) is used to connect to port B of the height valve (820) to be tested; A height valve test air cylinder assembly (430) is connected to the first end of the second height test air passage section (420); The first height test control valve (441) is located in the first height test air passage (410). The second height test control valve (442) is located in the second height test air passage (420). A fifth pressure sensor (451) is disposed at the second end of the first height test air passage (410); A sixth pressure sensor (452) is disposed at the second end of the second height test air passage (420).

8. The testing system for height valves and differential pressure valves for rail vehicles according to claim 7, characterized in that, The height valve test cylinder assembly (430) includes: Multiple test air cylinder branches (431) are connected in parallel to each other and are all connected in series with the second height test air passage section (420); Test cylinder control valve group (432), which is connected to each of the test cylinder branches (431) and is used to independently control the connection status between each of the test cylinder branches (431) and the second height test air passage (420).

9. The testing system for height valves and differential pressure valves for rail vehicles according to claim 7, characterized in that, The height valve testing module also includes: An airtightness test air passage (460) is provided, wherein the first end of the airtightness test air passage (460) is connected in parallel with the first end of the first height test air passage section (410), and the second end of the airtightness test air passage (460) is connected in parallel with the first end of the second height test air passage section (420). An airtightness test control valve (470) is provided in the airtightness test air passage (460). The testing system also includes: A height valve test air supply control valve (480) is provided between the second air supply module and the height valve test module.

10. The testing system for height valves and differential pressure valves for rail vehicles according to claim 8, characterized in that, The testing system also includes: A barcode scanner, used to scan the model QR codes of the height valve (820) and the differential pressure valve (810) to be tested; The controller is connected to the barcode scanner, the first air supply module, the second air supply module, the differential pressure valve test module, the height valve test module, and the air source control unit (500), and is used to control the working status of the first air supply module, the second air supply module, the differential pressure valve test module, the height valve test module, and the air source control unit (500) based on the scanning result of the barcode scanner.

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