Pressure wave valve control tool for high-speed rail air conditioner intake and exhaust air tightness test

Abstract

The utility model discloses a pressure wave valve control tool for a high-speed rail air conditioner air intake and exhaust air tightness test, and belongs to the technical field of air tightness detection auxiliary tools, and the pressure wave valve control tool is matched with a high-speed rail air conditioner air intake and exhaust air tightness test bench. The tool comprises a miniature external power supply module for supplying power to an electric executive component in the pressure wave valve and an external inflation pipeline for supplying air to a pneumatic executive component in the pressure wave valve. The external inflation pipeline comprises an inflation pipe connected with a pneumatic execution element in the pressure wave valve, a pressure gauge arranged on the inflation pipe, a switch valve, a one-way valve and a quick connecting plug, and the quick connecting plug is connected with a matched connector of an air source. By improving the control tool of the pressure wave valve in high-speed rail air intake and exhaust, the air intake and exhaust airtightness test process of a high-speed rail air conditioner is improved, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary tooling for air tightness testing, specifically relating to a pressure wave valve control tooling for air tightness testing of air intake and exhaust of high-speed rail air conditioners. Background Technology

[0002] During high-speed train operation, a significant pressure difference exists between the air inside and outside the train. If the airtightness of the train is inadequate, it can lead to problems such as whistling, abnormal noises, and localized resonance. The air conditioning unit is an essential component of high-speed trains, and its airtightness directly affects passenger comfort and operational safety. Therefore, ensuring the airtightness of the air conditioning unit during manufacturing is of paramount importance.

[0003] Existing high-speed rail air conditioning units typically undergo a sealing test after assembly. However, detecting and locating leaks at this stage is difficult. While the airtightness test of the entire vehicle unit can at most pinpoint the presence of leaking gas, it is difficult to pinpoint the exact location of the leak. Furthermore, once a leak is discovered at this stage, the entire unit is already installed in the vehicle, making the repair and disassembly process cumbersome and costly. Therefore, a tooling for airtightness testing of the sheet metal casing of the air conditioning unit is needed to determine the specific location of the leak and repair it before the air conditioning unit is fully assembled.

[0004] In current airtightness tests, the pressure wave valve of the air conditioning unit is controlled by an external power supply and an external air source. The wiring is connected to the pressure wave valve via a high-speed rail air conditioning intake and exhaust airtightness test bench, making the airtightness test inconvenient and inefficient. Therefore, how to facilitate airtightness testing of high-speed rail air conditioning intake and exhaust has become an urgent technical problem to be solved. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a pressure wave valve control fixture for the air tightness test of the air intake and exhaust of high-speed rail air conditioners. By improving the control fixture of the pressure wave valve in the air intake and exhaust of high-speed rail, the air tightness test process of the air intake and exhaust of high-speed rail air conditioners is improved and the work efficiency is increased.

[0006] The technical solution adopted in this utility model is: a pressure wave valve control fixture for air tightness testing of high-speed rail air conditioning intake and exhaust, which is used in conjunction with a high-speed rail air conditioning intake and exhaust air tightness test bench. The fixture includes a miniature external power supply module for powering the electric actuator in the pressure wave valve and an external inflation pipeline for supplying air to the pneumatic actuator in the pressure wave valve. The external inflation pipeline includes an inflation pipe connected to the pneumatic actuator in the pressure wave valve, a pressure gauge, a switching valve, a check valve, and a quick connector installed on the inflation pipe. The quick connector is connected to the matching connector of the air source.

[0007] Furthermore, the miniature external power supply module includes a power cord, a control switch mounted on the power cord, a plug connected to the electric actuator in the pressure wave valve, and a matching miniature power bank.

[0008] Furthermore, the high-speed rail air conditioner air tightness test bench includes an air storage box, an air inlet and an air outlet provided on the side of the air storage box, and a docking interface provided on the upper surface of the air storage box to connect with the air inlet and air outlet of the high-speed rail air conditioner. The air inlet is connected to an external air source for air tightness testing through an air supply pipe, and a pressure gauge is provided on the air supply pipe.

[0009] The beneficial effects of this utility model are as follows: by improving the control tooling of the pressure wave valve in the high-speed rail air intake and exhaust, the air tightness test process of the high-speed rail air conditioning intake and exhaust is improved, and the work efficiency is increased. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a diagram showing the assembly of the airtightness test bench for the high-speed rail unit and the high-speed rail air conditioner.

[0012] Figure 3 This is a schematic diagram of a high-speed train unit;

[0013] Figure 4 yes Figure 2 Yes, it is a sectional view;

[0014] Figure 5 This is a schematic diagram of a high-speed rail air conditioning intake and exhaust air tightness test bench;

[0015] In the attached diagram: 1 is the inflation tube, 2 is the pressure gauge, 3 is the switch valve, 4 is the one-way valve, 5 is the quick connector, 6-1 is the air storage tank, 6-2 is the air inlet, 6-3 is the air outlet, 6-4 is the connector, 7-1 is the air inlet and outlet, 8 is the pressure wave valve, 9 is the power cord, 10 is the control switch, and 11 is the mini power bank. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0017] See appendix Figure 1-5A pressure wave valve control fixture for air tightness testing of high-speed rail air conditioning intake and exhaust systems is used in conjunction with a high-speed rail air conditioning intake and exhaust air tightness test bench. The fixture includes a miniature external power supply module for powering the electric actuator in the pressure wave valve 8 and an external inflation pipeline for supplying air to the pneumatic actuator in the pressure wave valve 8. The external inflation pipeline includes an inflation pipe 1 connected to the pneumatic actuator in the pressure wave valve, a pressure gauge 2, a switching valve 4, a one-way valve 3, and a quick-connect connector 5 mounted on the inflation pipe 1. The quick-connect connector 5 is connected to a matching connector of the air source. The miniature external power supply module includes a power cord 9, a control switch 10 mounted on the power cord 9, a plug connected to the electric actuator in the pressure wave valve 8, and a matching miniature power bank 11. The air tightness test bench for the air intake and exhaust of the high-speed rail air conditioner includes an air storage box 6-1, an air inlet 6-2 and an air outlet 6-3 on the side of the air storage box 6-1, and a mating interface 6-4 on the upper surface of the air storage box 6-1 that connects with the air intake and exhaust outlet 7-1 of the high-speed rail air conditioner. The air inlet 6-2 is connected to an external air source for the air tightness test through an air supply pipe, and a pressure gauge is installed on the air supply pipe.

[0018] The aforementioned switch valve 3 is a straight-through switch valve BUC-8, and the check valve 4 is a one-way exhaust and pressure relief valve HVFF-8.

[0019] This utility model relates to a high-speed rail air conditioning unit with a pressure wave valve 8, designed for air tightness testing. The unit's casing is made of sheet metal, and it has an inlet / outlet port 7-1 at the bottom that mates with the interface 6-4 in the air storage tank 6-1. The tooling of this utility model connects to the electric and pneumatic actuators of the pressure wave valve 8 from the inlet / outlet port 7-1. After the pressure wave valve 8 is closed, the quick-connect connector 5 is disconnected from the connector matching the air source.

[0020] Then, place the air conditioning unit on the top surface of the air storage box 6-1, aligning the limiting frame of the air storage box 6-1 with the corresponding connection port on the air conditioning unit's outer casing, and ensuring that the interface 6-4 is sealed and connected to the air inlet and outlet 7-1 of the high-speed rail air conditioner. Inflate the air storage box 6-1 with air through the air inlet 6-2, observing the pressure gauge reading on the air supply pipe. Once the required pressure is reached, shut off the external air source for the airtightness test. First, observe whether the pressure gauge reading drops rapidly. If it does, spray soapy water onto the air conditioning unit casing and observe the bubbles to pinpoint the leak. If the pressure remains stable, there is no leak, and the air conditioning unit casing is airtight.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pressure wave valve control fixture for airtightness testing of high-speed rail air conditioning intake and exhaust systems, used in conjunction with a high-speed rail air conditioning intake and exhaust airtightness testing bench, characterized in that: The tooling includes a miniature external power supply module for powering the electric actuator in the pressure wave valve and an external inflation line for supplying air to the pneumatic actuator in the pressure wave valve. The external inflation line includes an inflation pipe (1) connected to the pneumatic actuator in the pressure wave valve, a pressure gauge (2), a switching valve (4), a check valve (3), and a quick connector (5) installed on the inflation pipe (1). The quick connector (5) is connected to the matching connector of the air source.

2. The pressure wave valve control fixture for the airtightness test of high-speed rail air conditioning intake and exhaust as described in claim 1, characterized in that: The miniature external power supply module includes a power cord (9), a control switch (10) installed on the power cord, a plug connected to the electric actuator in the pressure wave valve, and a matching miniature power bank (11).

3. The pressure wave valve control fixture for the airtightness test of high-speed rail air conditioning intake and exhaust as described in claim 1, characterized in that: The air tightness test bench for the air intake and exhaust of the high-speed rail air conditioner includes an air storage box (6-1), an air inlet (6-2) and an air outlet (6-3) provided on the side of the air storage box (6-1), and a mating interface (6-4) provided on the upper end face of the air storage box (6-1) to connect with the air intake and exhaust of the high-speed rail air conditioner. The air inlet (6-2) is connected to an external air source for air tightness testing through an air supply pipe, and a pressure gauge is provided on the air supply pipe.

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