Safety valve detection device

Abstract

The invention provides a safety valve detection device, and relates to the technical field of high-speed motor train unit performance detection. The method comprises an air cylinder, a first air path and a second air path, the air cylinder comprises an inlet and an outlet, the inlet is connected with the first air path, and the outlet is connected with the second air path; the first gas circuit comprises a first pressure reducing valve and a first electromagnetic valve, the first pressure reducing valve is located between the air source and the first electromagnetic valve, and the first electromagnetic valve is located between the inlet and the first pressure reducing valve; the second gas circuit comprises a second solenoid valve and a first test interface, and the second solenoid valve is located between the outlet and the first test interface; when the first solenoid valve and the second solenoid valve are in a preset on-off state, the safety valve detection device is used for providing a pressure test environment and / or an air tightness test environment for the to-be-detected safety valve connected to the first test interface. The technical problem of low safety valve detection efficiency in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of high-speed train performance detection, and in particular to a safety valve detection device. Background Art

[0002] The EMU auxiliary air compressor safety valve and bogie bolster safety valve are key components for safe operation. They automatically release pressure when system pressure exceeds a set value, preventing damage to equipment due to overpressure and ensuring stable operation of the entire braking system. Comprehensive inspection and testing of the auxiliary air compressor and bogie bolster safety valves, including air tightness testing, is crucial.

[0003] At present, due to the special design of the auxiliary air compressor safety valve and the bogie rocker safety valve, it is impossible to test them directly at the maintenance site. The safety valve needs to be removed and sent to an external agency for inspection.

[0004] However, existing technologies are unable to conduct autonomous inspections of the auxiliary air compressor safety valve and the bogie bolster safety valve, and the safety valve inspection efficiency is low. Summary of the Invention

[0005] The present application provides a safety valve detection device to solve the problem in existing research that it is impossible to conduct autonomous detection of the auxiliary air compressor safety valve and the bogie rocker safety valve, resulting in low safety valve detection efficiency.

[0006] In a first aspect, the present application provides a safety valve detection device, comprising an air cylinder, a first air path, and a second air path;

[0007] The air cylinder includes an inlet and an outlet, wherein the inlet is connected to the first air path and the outlet is connected to the second air path; the first air path is used to connect to the air source;

[0008] The first air circuit includes a first pressure reducing valve and a first solenoid valve. The first pressure reducing valve is located between the air source and the first solenoid valve, and the first solenoid valve is located between the inlet and the first pressure reducing valve. The first pressure reducing valve is used to reduce the air pressure from the air source to the air cylinder, and the first solenoid valve is used to control the on / off of the first air circuit.

[0009] The second gas circuit includes a second solenoid valve and a first test interface, wherein the second solenoid valve is located between the outlet and the first test interface; wherein the second solenoid valve is used to control the on / off of the second gas circuit, and the first test interface is used to connect to the safety valve to be tested;

[0010] When the first solenoid valve and the second solenoid valve are in a preset switch state, the safety valve detection device is used to provide a pressure test environment and / or an air tightness test environment for the safety valve to be detected connected to the first test interface.

[0011] In one possible design, a ball valve is also included;

[0012] The ball valve is located between the outlet and the second solenoid valve;

[0013] The ball valve is used to adjust the air pressure entering the first test interface.

[0014] In one possible design, the first gas circuit further includes a first wind meter, and the second gas circuit further includes a second wind meter;

[0015] The first air meter is located between the first pressure reducing valve and the first solenoid valve, and is used to detect the air pressure of the first air path;

[0016] The second air meter is located between the ball valve and the second solenoid valve, and is used to detect the air pressure of the second air path.

[0017] In one possible design, a third gas path and a fourth gas path are also included;

[0018] The inlet is connected to the third gas circuit, and the outlet is connected to the fourth gas circuit; the third gas circuit is used to connect to the air source;

[0019] The third air circuit includes a second pressure reducing valve and a third solenoid valve. The second pressure reducing valve is located between the air source and the third solenoid valve, and the third solenoid valve is located between the inlet and the second pressure reducing valve. The second pressure reducing valve is used to reduce the air pressure from the air source to the air cylinder, and the third solenoid valve is used to control the on / off of the third air circuit.

[0020] The fourth gas circuit includes a fourth solenoid valve and a second test interface, and the fourth solenoid valve is located between the outlet and the second test interface; wherein the fourth solenoid valve is used to control the on-off of the fourth gas circuit, and the second test interface is used to connect to the safety valve to be tested;

[0021] When the third solenoid valve and the fourth solenoid valve are in a preset switch state, the safety valve detection device is used to provide a pressure test environment and / or an air tightness test environment for the safety valve to be tested connected to the second test interface;

[0022] The first test interface and the second test interface are different types of test interfaces.

[0023] In a possible design, the first test interface is detachably connected to the second solenoid valve.

[0024] In a possible design, it further includes a safety valve detection bracket and an air cylinder bracket, wherein the air cylinder bracket is fixedly arranged on the safety valve detection bracket;

[0025] The air cylinder bracket is used to fix the air cylinder.

[0026] In one possible design, the safety valve detection bracket is provided with a drawer;

[0027] The drawer is used to store the safety valve to be tested and the first test interface.

[0028] In one possible design, a control component is also included;

[0029] The control component is connected to the first pressure reducing valve, the first solenoid valve and the second solenoid valve respectively, and the control component is used to control the switching status of the first pressure reducing valve, the first solenoid valve and the second solenoid valve according to the pressure test environment and / or the air tightness test environment.

[0030] In one possible design, a pressure acquisition component is also included;

[0031] The pressure collection component is used to collect the pressure status of the safety valve to be tested.

[0032] In one possible design, a data processing component is also included;

[0033] The data processing component is connected to the pressure acquisition component and is used to generate and display pressure test results according to the pressure status.

[0034] The present application provides a safety valve detection device, comprising an air cylinder, a first air circuit, and a second air circuit; the air cylinder comprising an inlet and an outlet, the inlet connected to the first air circuit, and the outlet connected to the second air circuit; the first air circuit comprising a first pressure reducing valve and a first solenoid valve, the first pressure reducing valve being located between an air source and the first solenoid valve, and the first solenoid valve being located between the inlet and the first pressure reducing valve; the second air circuit comprising a second solenoid valve and a first test interface, the second solenoid valve being located between the outlet and the first test interface; wherein, when the first and second solenoid valves are in a preset switch state, the safety valve detection device is configured to provide a pressure test environment and / or an air tightness test environment for the safety valve to be tested, which is connected to the first test interface. Compared to the prior art, which cannot independently test the auxiliary air compressor safety valve and the bogie bolster safety valve, resulting in a technical problem of low safety valve detection efficiency. The present application implements air pressure input to the air cylinder through the first air circuit and performs testing through the second air circuit, thereby achieving autonomous testing of the safety valve and improving safety valve detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 A schematic diagram of the structure of a safety valve detection device provided in an embodiment of the present application Figure 1 ;

[0037] Figure 2A front view of a safety valve detection device provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of the structure of a safety valve detection device provided in an embodiment of the present application Figure 2 ;

[0039] Figure 4 A top view of a safety valve detection device provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of the control component structure of a safety valve detection device provided in an embodiment of the present application;

[0041] Figure 6 A wiring diagram of a control component of a safety valve detection device provided in an embodiment of the present application;

[0042] Figure 7 A schematic diagram of the installation of an auxiliary air compressor safety valve of a safety valve detection device provided in an embodiment of the present application;

[0043] Figure 8 A schematic diagram of a pressure test result of an auxiliary air compressor safety valve of a safety valve detection device provided in an embodiment of the present application;

[0044] Figure 9 A schematic diagram of the air tightness test results of an auxiliary air compressor safety valve of a safety valve detection device provided in an embodiment of the present application;

[0045] Figure 10 A schematic diagram of the installation of a bogie bolster safety valve of a safety valve detection device provided in an embodiment of the present application.

[0046] Description of reference numerals:

[0047] 10-air cylinder; 11-inlet; 12-outlet; 13-air cylinder bracket;

[0048] 20-first gas circuit; 21-first pressure reducing valve; 22-first solenoid valve; 23-first air meter;

[0049] 30 - second gas circuit; 31 - second solenoid valve; 32 - first test interface; 33 - second wind meter;

[0050] 40-Safety valve to be tested; 41-Auxiliary air compressor safety valve; 42-Bogie bolster safety valve;

[0051] 50-Safety valve detection bracket; 51-Drawer; 52-Storage area for auxiliary air compressor safety valve; 53-Storage area for bogie bolster safety valve;

[0052] 60-ball valve;

[0053] 70-pipeline;

[0054] 80-third gas line; 81-second pressure reducing valve; 82-third solenoid valve;

[0055] 90 - fourth gas path; 91 - fourth solenoid valve; 92 - second test interface;

[0056] 101-Start button; 102-Emergency stop button; 103-Stop button;

[0057] 110 - digitization component; 111 - control component; 112 - pressure acquisition component; 113 - data processing component. DETAILED DESCRIPTION

[0058] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0059] In the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described in this application as "exemplary" or "for example" should not be interpreted as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way. In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more.

[0060] It should be noted that the phrase "at the time of..." in the embodiments of this application can refer to the instantaneous occurrence of a certain event or a period of time after the occurrence of the certain event, and this is not specifically limited in this embodiment of the application. Furthermore, the safety valve detection device provided in the embodiments of this application is merely an example, and the safety valve detection device may include more or less content.

[0061] In order to clearly describe the technical solutions of the embodiments of the present application, the following briefly introduces the technologies involved in the embodiments of the present application:

[0062] The EMU's auxiliary air compressor safety valve and bogie bolster safety valve are key components for ensuring safe operation. Their function is to automatically release pressure when system pressure exceeds the set value, preventing equipment damage from overpressure and ensuring stable operation of the entire braking system and other equipment. During the EMU's fourth-level maintenance and overhaul, the auxiliary air compressor safety valve and bogie bolster safety valve require comprehensive inspection and testing, including air tightness testing. Due to their special design, the auxiliary air compressor safety valve and bogie bolster safety valve are more difficult to inspect.

[0063] The auxiliary air compressor safety valve is inside the air compressor frame, and a 2.7bar pressure switch is installed inside the module. When the auxiliary air compressor charging pressure reaches 2.7bar, the pressure switch feeds back the monitoring signal to the brake control unit, and the brake control unit directly controls the auxiliary air compressor to stop, so the opening pressure of the safety valve cannot be detected. During the fourth-level maintenance and inspection of the EMU, the auxiliary air compressor safety valve needs to be removed and tested. Due to the lack of special testing tooling and equipment, it is impossible to test directly at the maintenance site, so the safety valve has been sent to an external agency for inspection, and the inspection fee is 300 yuan per piece.

[0064] After the auxiliary air compressor and bogie bolster safety valves are overhauled and assembled, functional testing is crucial to ensure proper function. Currently, performance parameters, ground testing technology, and equipment for these valves are lacking. Furthermore, the determination of valve damage is entirely left to the supplier, who lacks technical expertise. This makes it impossible to conduct independent testing of these valves during the fourth and fifth stage of EMU maintenance, resulting in inefficient safety valve testing.

[0065] Based on this, an embodiment of the present application provides a safety valve detection device that can be used in the field of high-speed EMU performance detection technology, aiming to solve the above technical problems of the prior art.

[0066] To address the above technical issues, the inventors discovered during their research into high-speed EMU safety valve testing technology that there was a lack of testing equipment and methods for autonomous testing of auxiliary air compressor safety valves and bogie bolster safety valves, resulting in low safety valve testing efficiency. Based on this, the inventors implemented a system whereby the air pressure is input to the air cylinder via the first air circuit and testing is performed via the second air circuit, thereby enabling autonomous testing of the safety valves. This effectively reduces costs, shortens maintenance cycles, improves maintenance quality, and ensures stable operation of the equipment after installation, thereby enhancing safety valve testing efficiency.

[0067] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0068] Figure 1 A schematic diagram of the structure of a safety valve detection device provided in an embodiment of the present application Figure 1 .exist Figure 1 In the embodiment of the present application, the safety valve detection device provided includes an air cylinder 10 , a first air path 20 and a second air path 30 .

[0069] The air cylinder 10 includes an inlet 11 and an outlet 12 . The inlet 11 is connected to the first air path 20 , and the outlet 12 is connected to the second air path 30 . The first air path 20 is used to connect to an air source.

[0070] Specifically, the safety valve detection device further includes a safety valve detection bracket 50 and an air cylinder bracket 13 . The air cylinder bracket 13 is fixedly arranged on the safety valve detection bracket 50 .

[0071] Specifically, the air cylinder bracket 13 is used to fix the air cylinder 10 .

[0072] More specifically, select an air cylinder 10 of appropriate specifications as the air supply source for the entire equipment. Place the air cylinder 10 on a stable air cylinder support 13 to ensure it does not shift or shake during operation. The capacity and pressure rating of the air cylinder 10 must be appropriately selected based on the required air pressure range for the safety valve test to ensure a continuous and stable supply of sufficient air volume for the test.

[0073] In addition, the air cylinder is connected to an external air source of 8.5 to 10 bar.

[0074] Among them, the first air circuit 20 includes a first pressure reducing valve 21 and a first solenoid valve 22. The first pressure reducing valve 21 is located between the air source and the first solenoid valve 22, and the first solenoid valve 22 is located between the inlet and the first pressure reducing valve 21; wherein, the first pressure reducing valve 21 is used to reduce the wind pressure from the air source to the air cylinder, and the first solenoid valve 22 is used to control the on and off of the first air circuit 20.

[0075] Among them, the second air circuit 30 includes a second solenoid valve 31 and a first test interface 32, and the second solenoid valve 31 is located between the outlet and the first test interface 32; wherein, the second solenoid valve 31 is used to control the on and off of the second air circuit 30, and the first test interface 32 is used to connect the safety valve 40 to be tested.

[0076] Specifically, the on-off of each solenoid valve is manually controlled to adjust the wind pressure input to the safety valve 40 to be tested.

[0077] The safety valve detection device further includes a pipeline 70 .

[0078] Specifically, use pipes 70 of appropriate diameter to connect the air cylinder 10 to the various components. During the connection process, plan the pipe routing based on the actual layout, minimizing bends and unnecessary length to reduce wind resistance. Use connectors to ensure tight connections between pipes to prevent air leaks.

[0079] Optionally, the first test interface 32 is detachably connected to the second solenoid valve 31 .

[0080] The connection between the test interface and the solenoid valve is a threaded connection, which makes installation and removal of the test interface easy and quick.

[0081] When the first solenoid valve 22 and the second solenoid valve 31 are in a preset switch state, the safety valve detection device is used to provide a pressure test environment and / or an air tightness test environment for the safety valve 40 to be detected connected to the first test interface 32 .

[0082] It should be noted that the safety valve 40 to be tested may be the auxiliary air compressor safety valve 41 or the bogie bolster safety valve 42 .

[0083] The safety valve 40 to be tested, which is connected to the first test interface 32 , is an auxiliary air compressor safety valve 41 .

[0084] Optionally, the EMU auxiliary air compressor safety valve 41 may be the auxiliary air compressor safety valve U12U12; the bogie bolster safety valve 42 may be the bogie bolster safety valve L06L06.

[0085] The first gas path 20 and the second gas path 30 are used to detect the auxiliary air compressor safety valve.

[0086] It should also be noted that different types of test interfaces should be provided to adapt to various types of safety valves.

[0087] Optional, the test interface of the auxiliary air compressor safety valve U12U12 is relatively special and is designed as a separate structure with a single-point quick-plug structure.

[0088] Optionally, other types of test interfaces should be designed to be able to be quickly and easily connected to and removed from the safety valve.

[0089] In addition, the applicable safety valve specification range should be clearly marked next to each test interface so that staff can make accurate selections during testing.

[0090] This embodiment provides a safety valve detection device, comprising an air cylinder, a first air circuit, and a second air circuit. The air cylinder comprises an inlet and an outlet, the inlet being connected to the first air circuit, and the outlet being connected to the second air circuit. The first air circuit comprises a first pressure reducing valve and a first solenoid valve, the first pressure reducing valve being located between an air source and the first solenoid valve, and the first solenoid valve being located between the inlet and the first pressure reducing valve. The second air circuit comprises a second solenoid valve and a first test interface, the second solenoid valve being located between the outlet and the first test interface. When the first and second solenoid valves are in a preset on / off state, the safety valve detection device is configured to provide a pressure test environment and / or an air tightness test environment for the safety valve to be tested, which is connected to the first test interface. Compared to the prior art, which cannot independently test the auxiliary air compressor safety valve and the bogie bolster safety valve, resulting in a technical problem of low safety valve detection efficiency, the present application implements air pressure input to the air cylinder through the first air circuit and performs testing through the second air circuit, thereby achieving autonomous testing of the safety valve and improving safety valve detection efficiency.

[0091] Figure 2 This is a front view of a safety valve detection device provided in an embodiment of the present application. Figure 2 In the embodiment of the present application, the safety valve detection device further includes a ball valve 60 .

[0092] The ball valve 60 is located between the outlet 12 and the second solenoid valve 31 .

[0093] Specifically, the ball valve 60 is installed between the air cylinder 10 and the subsequent pipeline 70 , that is, between the outlet 12 and the second solenoid valve 31 .

[0094] More specifically, the ball valve 60 is threadedly connected to the first pressure reducing valve 21 through the pipeline 70 .

[0095] The ball valve 60 is used to adjust the air pressure entering the first test interface 32 .

[0096] Specifically, the ball valve 60 is used to precisely adjust the air pressure entering the first test interface 32. By slowly rotating the handle of the ball valve 60, the opening can be gradually adjusted, thereby achieving fine control of the test pressure.

[0097] The safety valve detection bracket 50 is provided with a drawer 51 .

[0098] The drawer 51 is used to store the safety valve 40 to be tested and the first test interface 32 .

[0099] Optionally, the drawer 51 can be used to place the safety valve 40 to be tested and a matching test interface.

[0100] In this embodiment, the ball valve can be flexibly adjusted, that is, by slowly rotating the handle of the ball valve, the opening can be gradually adjusted, thereby achieving fine control of the test pressure, thereby improving the efficiency of safety valve testing.

[0101] Figure 3 A schematic diagram of the structure of a safety valve detection device provided in an embodiment of the present application Figure 2 .exist Figure 3 In the embodiment of the present application, the first air path 20 further includes a first air meter 23 , and the second air path 30 further includes a second air meter 33 .

[0102] Specifically, the wind meter is used to display the wind pressure value in the test circuit in real time to ensure the accuracy of the test results.

[0103] The first air meter 23 is located between the first pressure reducing valve 21 and the first solenoid valve 22 , and is used to detect the air pressure of the first air path 20 .

[0104] The second air meter 33 is located between the ball valve and the second solenoid valve 31 , and is used to detect the air pressure of the second air path 30 .

[0105] Specifically, the first air flow meter 23 is connected to the first pressure reducing valve 21 and the first solenoid valve 22 via a threaded connection via a pipe 70. The first solenoid valve 22 is threadedly connected to the auxiliary air compressor safety valve via a pipe 70. The auxiliary air compressor safety valve is threadedly connected to the second solenoid valve 31 via a pipe 70. The second solenoid valve 31 is threadedly connected to the second air flow meter 33 via a pipe 70. The bogie bolster safety valve is the same as above.

[0106] It should be noted that the ball valve 60 should be installed in a position that is easy to observe and operate. The staff can flexibly adjust the opening of the ball valve 60 according to the pressure value displayed by the wind meter to achieve the set safety valve test air pressure.

[0107] It should be noted that, starting from the outlet 12 of the air cylinder 10 , the pipeline 70 is sequentially connected to the ball valve 60 , the pressure reducing valve, the solenoid valve and the test interface.

[0108] It should also be noted that the entire device is provided with a stable wind pressure by the air cylinder 10. After the air cylinder 10 is opened, the compressed air stored in the air cylinder 10 enters the test circuit through the adjustment of the ball valve 60 and finally reaches the test interface. According to the specifications and requirements of the safety valve 40 to be tested, the staff adjusts the wind pressure in the test circuit to the set value by adjusting the opening of the ball valve 60. At this time, the safety valve 40 to be tested is connected to the corresponding test interface to observe the working status of the safety valve 40 to be tested under the set wind pressure. If the safety valve 40 to be tested can open and close normally under the set wind pressure, and the opening pressure and closing pressure meet its technical standards, the safety valve 40 to be tested is tested and qualified. An air meter is added to the entire pipeline 70, and the pressure value displayed in real time by the air meter provides an intuitive data basis for the operator to judge the performance of the safety valve, ensuring the accuracy and stability of the test of the safety valve 40 to be tested.

[0109] In this embodiment, the wind pressure value in the test circuit is displayed in real time based on the wind meter, and automatic detection is achieved through wind energy, thereby improving the safety valve detection efficiency.

[0110] Figure 4 This is a top view of a safety valve detection device provided in an embodiment of the present application. Figure 4 In the embodiment of the present application, the safety valve detection device further includes a third gas path 80 and a fourth gas path 90 .

[0111] The inlet 11 is connected to the third gas path 80 , and the outlet is connected to the fourth gas path 90 ; the third gas path 80 is used to connect to a wind source.

[0112] The third air circuit 80 includes a second pressure reducing valve 81 and a third solenoid valve 82. The second pressure reducing valve 81 is located between the air source and the third solenoid valve 82, and the third solenoid valve 82 is located between the inlet 11 and the second pressure reducing valve 81. The second pressure reducing valve 81 is used to reduce the wind pressure from the air source to the air cylinder 10, and the third solenoid valve 82 is used to control the on and off of the third air circuit 80.

[0113] The fourth gas circuit 90 includes a fourth solenoid valve 91 and a second test interface 92, and the fourth solenoid valve 91 is located between the outlet and the second test interface 92; wherein, the fourth solenoid valve 91 is used to control the on-off of the fourth gas circuit 90, and the second test interface 92 is used to connect the safety valve to be tested.

[0114] When the third solenoid valve 82 and the fourth solenoid valve 91 are in a preset switch state, the safety valve detection device is used to provide a pressure test environment and / or an air tightness test environment for the safety valve to be detected connected to the second test interface 92 .

[0115] The first test interface 32 and the second test interface 92 are different types of test interfaces.

[0116] Specifically, the safety valve 40 to be tested connected to the first test interface 32 is the auxiliary air compressor safety valve 41 .

[0117] Specifically, the safety valve 40 to be tested connected to the second test interface 92 is the bogie bolster safety valve 42 .

[0118] Specifically, different safety valves are compatible with different test interfaces. These test interfaces should be designed to quickly and easily connect and disconnect from the safety valve. Each test interface should be clearly labeled with the applicable safety valve specification range to ensure accurate selection during testing. The test interface for the auxiliary air compressor safety valve 41 is relatively unique and must be designed as a separate structure with a single-point quick-connect design.

[0119] The drawer 51 further includes an auxiliary air compressor safety valve storage area 52 and a bogie bolster safety valve storage area 53 for storing the auxiliary air compressor safety valve 41 and the bogie bolster safety valve 42 .

[0120] The safety valve detection device further includes a digital component 110 .

[0121] The safety valve detection device further includes a start button 101 for starting the device.

[0122] The safety valve detection device further includes an emergency stop button 102 for emergency stopping the device.

[0123] The safety valve detection device further includes a stop button 103 for stopping the device.

[0124] In this embodiment, based on different detection circuits and test ports, different types of safety valves can be tested, thereby improving the safety valve testing efficiency.

[0125] Figure 5 This is a schematic diagram of the control component structure of a safety valve detection device provided in an embodiment of the present application. Figure 5 In the embodiment of the present application, the safety valve detection device further includes a control component 111.

[0126] Among them, the control component 111 is connected to the first pressure reducing valve 21, the first solenoid valve 22 and the second solenoid valve 31 respectively, and the control component 111 is used to control the switching status of the first pressure reducing valve 21, the first solenoid valve 22 and the second solenoid valve 31 according to the pressure test environment and / or the air tightness test environment.

[0127] Specifically, the control component 111 includes a PLC controller, and the control component 111 controls the entire digital component 110 .

[0128] The safety valve detection device further includes a pressure collection component 112 .

[0129] The pressure collection component 112 is used to collect the pressure status of the safety valve to be tested.

[0130] Specifically, the pressure acquisition component 112 includes a pressure sensor, which can receive and process data sent wirelessly by the detection end, ensuring that the safety valve test pressure data can be collected in real time and accurately.

[0131] Specifically, the pressure sensor collects the test pressure value provided by the safety valve detection device for the safety valve 40 to be detected in real time, and transmits the collected pressure data to the data processing component 113 .

[0132] The safety valve detection device further includes a data processing component 113 .

[0133] The data processing component 113 is connected to the pressure acquisition component 112 and is used to generate and display pressure test results according to the pressure state.

[0134] Specifically, the data processing component 113 includes a tablet computer, which receives and stores pressure data, forms a pressure-time curve, reduces human intervention, automatically determines the test results, and improves the overall quality and efficiency of the safety valve testing work.

[0135] It should be noted that the entire process, from pressure data collection to test result determination, does not require excessive human intervention, which reduces the errors and uncertainties caused by human operation and improves test efficiency and accuracy.

[0136] In one possible embodiment, Figure 6 A wiring diagram of a control component of a safety valve detection device provided in an embodiment of the present application is shown in FIG. Figure 6 As shown:

[0137] Optionally, the digitizing component 110 also includes Bluetooth.

[0138] Optionally, the digitizing component 110 further includes an AC380V power supply to power the test equipment.

[0139] Optionally, the digital component 110 further includes a DC24V power supply to power the solenoid valve and the PLC controller.

[0140] Among them, the PLC controller serves as the core control unit, and its input points I0.0-I0.6 are connected to switches such as the start button 101, the emergency stop button 102 and the stop button 103.

[0141] Among them, the PLC controller serves as the core control unit, and its output points are Q0.0-Q0.6, which can control solenoid valves and other equipment.

[0142] Among them, the PLC controller serves as the core control unit, and its right side is connected to the analog input module and output module.

[0143] Among them, the analog module includes 2 input analog modules and 1 output analog module.

[0144] Among them, AI0+ and AI0- are used to collect the air compressor pressure value, which can convert the analog signal into digital value for processing by the PLC controller.

[0145] In this embodiment, digital components are used, controlled by a PLC controller. A pressure sensor collects test pressure values ​​in real time and transmits them to a tablet computer, generating a pressure-time curve and automatically determining the test results. This entire process reduces human intervention and avoids the errors and uncertainties associated with manual operation. Compared to traditional testing methods, this significantly improves testing efficiency and accuracy, ensuring high-quality safety valve testing.

[0146] Figure 7 A schematic diagram of the installation of an auxiliary air compressor safety valve of a safety valve detection device provided in an embodiment of the present application is shown in FIG. Figure 7 As shown, the installation method of the auxiliary air compressor safety valve 41 includes:

[0147] The first step is to take out the auxiliary air compressor safety valve 41 from the auxiliary air compressor safety valve storage 52 of the drawer 51.

[0148] In the second step, the auxiliary air compressor safety valve 41 is inserted into the first test interface 32 and tightened.

[0149] Furthermore, the pressure testing method of the auxiliary air compressor safety valve 41 includes:

[0150] First, prepare for the stress test.

[0151] The first step is to turn on the power, turn on the start button 101, and start the pressure test through the control component 111.

[0152] In the second step, the first solenoid valve 22 and the second solenoid valve 31 are opened, and the first pressure reducing valve 21, the third solenoid valve 82 and the fourth solenoid valve 91 are closed.

[0153] The third step is to rotate the ball valve 60 and observe the first air meter 23 to slowly increase the pressure in the air cylinder 10 to the starting pressure of the auxiliary air compressor safety valve.

[0154] Step 4: Visually inspect the second air gauge 33. As the pressure increases, the auxiliary air compressor safety valve opens. When the pressure reaches 9.0 bar ± 3%, the auxiliary air compressor safety valve opens.

[0155] Secondly, the preparation work is completed and the stress test is started:

[0156] The first step is to observe the first wind meter 23. The pressure in the air cylinder 10 rises to the opening pressure of the auxiliary air compressor safety valve.

[0157] The second step is a visual inspection of the second air flow meter 33. At a pressure of 9.0 bar + 10%, the auxiliary air compressor safety valve is fully open. Data processing component 113 generates a pressure-time curve. The peak pressure value read on the curve is the opening pressure of the auxiliary air compressor safety valve.

[0158] Once again, the stress test is complete, close the stress test:

[0159] In the first step, the first solenoid valve 22 is closed, the second solenoid valve 31 is opened, the first pressure reducing valve 21 is opened, and the third solenoid valve 82 and the fourth solenoid valve 91 are closed.

[0160] The second step is to observe the first air meter 23 and the pressure in the air cylinder 10 drops to the closing pressure of the auxiliary air compressor safety valve.

[0161] The third step is a visual inspection of the second air flow meter 33. At a pressure of 9.0 bar -10%, the auxiliary air compressor safety valve is fully closed. The data processing component 113 generates a pressure-time curve. The trough value of the pressure reading on the curve is the closing pressure value of the auxiliary air compressor safety valve.

[0162] In one possible embodiment, Figure 8 A schematic diagram of the pressure test results of the auxiliary air compressor safety valve of a safety valve detection device provided in an embodiment of the present application is shown as follows: Figure 8 As shown, the data processing component 113 forms a pressure-time curve.

[0163] Then, test the device for airtightness:

[0164] In the first step, the first solenoid valve 22 is closed, the second solenoid valve 31 is opened, the first pressure reducing valve 21 is closed, and the third solenoid valve 82 and the fourth solenoid valve 91 are closed.

[0165] The second step is to observe the first wind gauge 23 and raise the pressure in the tank to 90% of the set pressure.

[0166] In the third step, when the pressure reaches 8.2 bar, the first solenoid valve 22 is closed.

[0167] The fourth step is to visually inspect the second air flow meter 33 .

[0168] Specifically, there must be no significant pressure drop within 10 seconds. Maintain pressure for 2 minutes and record the pressure leakage to test the air tightness of the auxiliary air compressor safety valve. Data processing component 113 generates a pressure-time curve. If the curve fluctuations are within the qualified range, the pressure maintenance is qualified.

[0169] In one possible embodiment, Figure 9 A schematic diagram of the air tightness test results of the auxiliary air compressor safety valve of a safety valve detection device provided in an embodiment of the present application is shown as follows: Figure 9 As shown, the airtightness test results can be checked.

[0170] Finally, put the finishing touches on the device:

[0171] The first step is to disassemble the auxiliary air compressor safety valve 41 and remove the auxiliary air compressor safety valve 41 from the first test interface 32 .

[0172] The second step is to place the auxiliary air compressor safety valve 41 into the auxiliary air compressor safety valve storage 52.

[0173] It is important to note that the full operational procedures, from safety valve installation, pressure testing, result assessment, to disassembly and storage, specify specific testing pressure standards for the auxiliary air compressor safety valve 41. These include the opening and closing requirements for the auxiliary air compressor safety valve 41 within a specific pressure range, as well as the corresponding pressure standards for the auxiliary air compressor safety valve 41. This significantly improves testing efficiency and accuracy, ensuring high-quality safety valve testing.

[0174] In this embodiment, performance testing was performed on a specific test circuit for the auxiliary air compressor safety valve. This optimized the operational process and explored the testing principles, improving safety valve testing efficiency. This fills a gap in safety valve testing technology, provides new insights and methods for high-speed EMU safety valve testing, and plays a positive role in demonstrating and guiding technological development across the industry.

[0175] Figure 10 A schematic diagram of a bogie bolster safety valve installation diagram of a safety valve detection device provided in an embodiment of the present application is shown in FIG. Figure 10 As shown, the installation method of the bogie bolster safety valve 42 includes:

[0176] The first step is to take out the bogie bolster safety valve 42 from the bogie bolster safety valve storage 53 of the drawer 51.

[0177] The second step is to install the bogie bolster safety valve 42 into the second test interface 92 and tighten it.

[0178] Furthermore, the pressure testing method of the bogie bolster safety valve 42 includes:

[0179] First, prepare for the stress test.

[0180] The first step is to turn on the power supply, turn on the start button 101, and start the pressure test through the PLC controller.

[0181] In the second step, the third solenoid valve 82 and the fourth solenoid valve 91 are opened, the second pressure reducing valve 81 is closed, and the first solenoid valve 22 and the second solenoid valve 31 are closed.

[0182] The third step is to rotate the ball valve 60 and observe the first air gauge 23 to slowly increase the pressure in the air cylinder 10 to the starting pressure of the bogie bolster safety valve 42.

[0183] Step 4: Visually inspect the second air gauge 33. As the pressure increases, the bogie bolster safety valve 42 opens. When the pressure is 8.0 bar ± 3%, the bogie bolster safety valve 42 opens.

[0184] Secondly, the preparation work is completed and the stress test is started:

[0185] The first step is to observe the first air gauge 23. The pressure in the air cylinder 10 rises to the opening pressure of the bogie bolster safety valve 42.

[0186] The second step is a visual inspection of the second air gauge 33. At a pressure of 8.0 bar + 10%, the bogie bolster safety valve 42 is fully open. The digitizer 110 generates a pressure-time curve. The peak pressure reading on the curve represents the opening pressure of the bogie bolster safety valve 42.

[0187] Once again, the stress test is complete, close the stress test:

[0188] In the first step, the third solenoid valve 82 is closed, the fourth solenoid valve 91 is opened, the second pressure reducing valve 81 is opened, and the first solenoid valve 22 and the second solenoid valve 31 are closed.

[0189] The second step is to observe the first air gauge 23 and the pressure in the air cylinder 10 drops to the closing pressure of the bogie bolster safety valve 42.

[0190] The third step is a visual inspection of the second air gauge 33. At a pressure of 8.0 bar -10%, the bogie bolster safety valve 42 is fully closed. The digitizer 110 generates a pressure-time curve. The trough of the pressure reading on the curve represents the closing pressure of the bogie bolster safety valve 42.

[0191] Then, test the device for airtightness:

[0192] In the first step, the third solenoid valve 82 is closed, the fourth solenoid valve 91 is opened, the second pressure reducing valve 81 is closed, and the first solenoid valve 22 and the second solenoid valve 31 are closed.

[0193] The second step is to observe the first wind gauge 23 and raise the pressure in the tank to 90% of the set pressure.

[0194] In the third step, when the pressure reaches 7.2 bar, the third solenoid valve 82 is closed.

[0195] The fourth step is to visually inspect the second air flow meter 33 .

[0196] Specifically, a significant pressure drop can occur within 10 seconds. Maintain pressure for 2 minutes and record the amount of pressure leakage to test the air tightness of the bogie bolster safety valve 42. Maintain pressure for another 5 minutes and record the amount of pressure leakage to test the air tightness of the bogie bolster safety valve 42. The digital component 110 generates a pressure-time curve. If the curve fluctuations are within the acceptable range, the pressure maintenance is qualified.

[0197] Finally, put the finishing touches on the device:

[0198] The first step is to disassemble the bogie bolster safety valve 42 and remove the bogie bolster safety valve 42 from the second test interface 92 .

[0199] In the second step, the bogie bolster safety valve 42 is placed in the bogie bolster safety valve storage 53 .

[0200] It should be noted that the safety valve testing is not limited to the auxiliary air compressor safety valve 41 and the bogie bolster safety valve 42. Different types of safety valves can be tested by simply replacing different types of test interfaces. This expands the testing scope and applicability, greatly improving the versatility and diversity of the testing device.

[0201] It's also worth noting that the entire safety valve process, from installation and pressure testing to result assessment and disassembly and storage, has been standardized. Specific testing pressure standards have been defined for the bogie bolster safety valve 42, including the opening and closing requirements within a specific pressure range and the corresponding pressure standards for the bogie bolster safety valve 42. This significantly improves testing efficiency and accuracy, ensuring high-quality safety valve testing.

[0202] In this embodiment, performance testing was performed on a specific test circuit for bogie bolster safety valves. This optimized the operational process and explored the testing principles, improving safety valve testing efficiency. This fills a gap in safety valve testing technology, provides new insights and methods for high-speed EMU safety valve testing, and plays a positive role in demonstrating and guiding technological development across the industry.

[0203] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

[0204] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A safety valve detection device, characterized in that: It includes an air cylinder, a first air path and a second air path; The air cylinder includes an inlet and an outlet, the inlet is connected to the first air path, and the outlet is connected to the second air path; the first air path is used to connect to an air source; The first air circuit includes a first pressure reducing valve and a first solenoid valve, wherein the first pressure reducing valve is located between the air source and the first solenoid valve, and the first solenoid valve is located between the inlet and the first pressure reducing valve; wherein the first pressure reducing valve is used to reduce the air pressure from the air source to the air cylinder, and the first solenoid valve is used to control the on / off of the first air circuit; The second gas circuit includes a second solenoid valve and a first test interface, wherein the second solenoid valve is located between the outlet and the first test interface; wherein the second solenoid valve is used to control the on / off of the second gas circuit, and the first test interface is used to connect to the safety valve to be tested; When the first solenoid valve and the second solenoid valve are in a preset switch state, the safety valve detection device is used to provide a pressure test environment and / or an air tightness test environment for the safety valve to be detected connected to the first test interface.

2. The safety valve detection device according to claim 1, characterized in that: Also includes ball valves; The ball valve is located between the outlet and the second solenoid valve; The ball valve is used to adjust the air pressure entering the first test interface.

3. The safety valve detection device according to claim 2, characterized in that: The first gas circuit further includes a first wind meter, and the second gas circuit further includes a second wind meter; The first air meter is located between the first pressure reducing valve and the first solenoid valve, and is used to detect the air pressure of the first air path; The second air meter is located between the ball valve and the second solenoid valve, and is used to detect the air pressure of the second air path.

4. The safety valve detection device according to any one of claims 1 to 3, characterized in that: Also included are a third gas path and a fourth gas path; The inlet is connected to the third gas circuit, and the outlet is connected to the fourth gas circuit; the third gas circuit is used to connect to the air source; The third air circuit includes a second pressure reducing valve and a third solenoid valve, wherein the second pressure reducing valve is located between the air source and the third solenoid valve, and the third solenoid valve is located between the inlet and the second pressure reducing valve; wherein the second pressure reducing valve is used to reduce the air pressure from the air source to the air cylinder, and the third solenoid valve is used to control the on / off of the third air circuit; The fourth gas circuit includes a fourth solenoid valve and a second test interface, wherein the fourth solenoid valve is located between the outlet and the second test interface; wherein the fourth solenoid valve is used to control the on / off of the fourth gas circuit, and the second test interface is used to connect to the safety valve to be tested; Wherein, when the third solenoid valve and the fourth solenoid valve are in a preset switch state, the safety valve detection device is used to provide a pressure test environment and / or an air tightness test environment for the safety valve to be tested connected to the second test interface; The first test interface and the second test interface are different types of test interfaces.

5. The safety valve detection device according to any one of claims 1 to 3, characterized in that: The first test interface is detachably connected to the second solenoid valve.

6. The safety valve detection device according to any one of claims 1 to 3, characterized in that: It also includes a safety valve detection bracket and an air cylinder bracket, wherein the air cylinder bracket is fixedly arranged on the safety valve detection bracket; The air cylinder bracket is used to fix the air cylinder.

7. The safety valve detection device according to claim 6, characterized in that: The safety valve detection bracket is provided with a drawer; The drawer is used to store the safety valve to be tested and the first test interface.

8. The safety valve detection device according to any one of claims 1 to 3, characterized in that: Also included are control components; The control component is connected to the first pressure reducing valve, the first solenoid valve and the second solenoid valve respectively, and the control component is used to control the switching status of the first pressure reducing valve, the first solenoid valve and the second solenoid valve according to the pressure test environment and / or the air tightness test environment.

9. The safety valve detection device according to claim 8, characterized in that: Also included is a pressure acquisition component; The pressure collection component is used to collect the pressure status of the safety valve to be tested.

10. The safety valve detection device according to claim 9, characterized in that: Also included are data processing components; The data processing component is connected to the pressure acquisition component and is used to generate and display pressure test results according to the pressure state.

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