CN214066425U

CN214066425U - Air tightness test tool

Info

Publication number: CN214066425U
Application number: CN202120097850.3U
Authority: CN
Inventors: 王刚; 杜鑫; 龙宪泽; 唐江; 余启良; 曾琼程; 王金龙; 杨瑞瑾; 匡萱
Original assignee: Zhuzhou Electrical Locomotive Widege S&t Co ltd
Current assignee: Zhuzhou Electrical Locomotive Widege S&t Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-08-27
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses an air-tight test frock, including sealed box and business turn over gas system, be equipped with the external interface that is used for installing test part on the sealed box, business turn over gas system and sealed box intercommunication. Utilize the utility model discloses when testing the test part, only need to install the test part to external kneck, then aerify or exhaust sealed box through the system of giving vent to anger, can verify the seal reliability of test part.

Description

Air tightness test tool

Technical Field

The utility model belongs to the technical field of the rail transit vehicle, concretely relates to gas tightness test frock.

Background

The components such as the vehicle door are important components on the rail transit vehicle, and the reliability of the sealing is related to the riding comfort of a driver or passengers. As the speed of rail transit vehicles is faster and faster, the noise generated during the running process of the vehicles is also larger and larger. Under the condition of high speed, the sealing performance of some installation parts is not tight due to the action of internal and external pressure, so that the conditions of air leakage, rain leakage and high noise occur. In order to verify the sealing reliability of components such as a vehicle door, an air tightness test tool needs to be designed to verify the reliability of the sealing performance of a product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air-tight test frock to test vehicle installation part's sealing reliability.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an air tightness test frock, includes seal box and business turn over gas system, be equipped with the external interface that is used for installing test part on the seal box, business turn over gas system and seal box intercommunication.

When the test component is tested, the test component is installed at the external interface, and then the sealed box body is inflated or exhausted through the air inlet and outlet system, so that the sealing reliability of the test component can be verified.

Preferably, the air inlet and outlet system comprises a vacuum pump and an air compressor, and the vacuum pump and the air compressor are both communicated with the sealed box body through pipelines. The vacuum pump and the air compressor can respectively provide negative pressure and positive pressure for the sealed box body so as to configure different test pressure environments.

Preferably, the pipeline is provided with a gas pressure meter, a switch valve and a pressure relief valve.

Preferably, the sealed box body is composed of a cubic steel skeleton structure and a skin wrapping the cubic steel skeleton structure, and the external interface is arranged on the side wall of the sealed box body.

Preferably, the bottom of the cubic steel skeleton structure is formed by welding channel steel, and the side wall and the top of the cubic steel skeleton structure are formed by welding square pipes.

Preferably, lifting columns are welded at four corners of the bottom of the cubic steel framework structure.

Preferably, a door frame is fixed to the side wall of the sealed box body through a support plate, and the door frame forms the external interface.

The utility model has the advantages that: the utility model can verify the sealing reliability of the test parts such as the vehicle door, and ensure the quality of the test parts; simultaneously the utility model discloses an external interface has the commonality, and repeatedly usable is many times, has avoided the frock to use once the condemned condition, has reduced the test cost of enterprise.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a connection diagram of the middle sealed box body and the air inlet and outlet system of the present invention;

FIG. 3 is a structural diagram of the sealed box of the present invention;

FIG. 4 is a schematic view of the interior of the sealed box of the present invention;

fig. 5 is a schematic diagram of the interface between the outside and the inside of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The utility model provides a gas tightness test frock, the frock comprises sealed box 1 and air inlet and outlet system 2 two parts, sealed box 1 is the frock main part, provides the required volume space of gas, provides corresponding external interface 3 simultaneously for test part 4. The test member 4 may be a door or other members requiring the verification of the air-tightness test, such as a side window. The air inlet and outlet system 2 provides required air pressure for the test tool and mainly comprises a vacuum pump 5 and an air compressor 6, wherein the vacuum pump 5 is mainly used for pumping negative pressure, and the air compressor 6 is mainly used for pumping positive pressure. The vacuum pump and the air compressor are respectively provided with a corresponding air pressure gauge, a switch device and a pressure relief valve. The barometer is used for detecting the atmospheric pressure during the experiment, and the relief valve is mainly used for the pressure release, selects to take out positive pressure or negative pressure according to the demand of experiment. The vacuum pump 5 and the air compressor 6 are controlled by the electric cabinet, are electrified and started, and are started by selecting the corresponding buttons of the vacuum pump or the air compressor. The air inlet and outlet system 2 is connected with the sealed box body 1 through a pipeline 7, and the pipeline is installed on the sealed box body 1 through a pipeline interface. The barometer, the air pressure control switch valve, the pressure release valve and the like are arranged on the pipeline 7. After the test is started, the vacuum pump 5 or the air compressor 6 is started, the air pressure control switch valve is opened, air enters or is discharged, and when the air pressure meter reaches a certain reading, the air pressure control switch valve is closed to perform related tests. The pressure relief valve is generally used for relieving pressure so as to enable the pressure inside the test tool to be recovered to be normal in sequence.

In this embodiment, the sealed box 1 is composed of a cubic steel skeleton structure 8 and a skin 9. The cubic steel skeleton structure 8 mainly comprises a channel steel 10, a skeleton square tube 11, a hoisting column 12, an underframe supporting channel steel 13, a supporting plate 14, a door frame 15 and other parts. The hoisting post 12 is welded on the channel steel 10, distributed at four corners of the tool, adopts square pipes with proper specifications, needs to be firm and reliable in welding, and hoists the part for transferring the whole tool. The channel steel 10 is the chassis part of the whole tool, and the channel steel with the same specification is cut into the corresponding proper length to form a square frame. The square tube 11 is a framework part of the side face and the top face of the whole tool, and is divided into a left side wall part, a right side wall part, a front side wall part, a rear side wall part and a top side wall part by taking the installation position of a component as a coordinate; each side wall part adopts square tubes with uniform specifications, and the square tubes are cut into square tubes with different lengths according to corresponding space sizes. The chassis supporting channel steel 13 is welded at the bottom of the sealing box body 1, so that the tool can stand on the ground and is convenient for forklift operation. And each side wall needs to be assembled separately and then integrally assembled, and the structural firmness needs to be ensured during welding. The supporting plate 14 and the door frame 15 are positioned on the front side wall to form an external interface 3, the size of all parts which can be used for the experiment needs to be considered for the opening at the position, enough space needs to be reserved, and the experiment requirements of different products are guaranteed. Certain threaded mounting holes need to be reserved on the supporting plate 14, so that subsequent component mounting is facilitated. And after all the parts are installed, installing the skin 9, wherein the size of the skin 9 is determined according to the size of each surface, and the total size is six surfaces, wherein only the skin at the bottom is installed on the inner side of the experimental tool, and the rest skins are installed on the outer side of the tool. The mounting mode of the skin 9 can be welding or riveting, and can also be combined by welding and riveting, and is determined according to the actual situation on site. The whole experiment tool needs to ensure absolute sealing, and all gaps need to be sealed. And after the sealing treatment is finished, a sealing plate is arranged at the position of the external interface 3, the whole tool is completely sealed, and the sealing performance of the sealing box body 1 is tested according to relevant test standards. After passing the check, the test of the corresponding test part 4 is performed.

Claims

1. The utility model provides an air tightness test frock, its characterized in that, includes seal box (1) and business turn over gas system (2), be equipped with on seal box (1) and be used for installing external interface (3) of test part (4), business turn over gas system (2) and seal box (1) intercommunication.

2. The air tightness test tool according to claim 1, wherein the air inlet and outlet system (2) comprises a vacuum pump (5) and an air compressor (6), and the vacuum pump (5) and the air compressor (6) are both communicated with the sealed box body (1) through a pipeline (7).

3. The air tightness test tool according to claim 2, wherein a gas pressure gauge, a switch valve and a pressure relief valve are installed on the pipeline (7).

4. The air-tightness test tool according to claim 1, wherein the sealed box body (1) is composed of a cubic steel skeleton structure (8) and a skin (9) wrapping the cubic steel skeleton structure, and the external interface (3) is arranged on the side wall of the sealed box body (1).

5. The air tightness test tool according to claim 4, wherein the bottom of the cubic steel skeleton structure (8) is formed by welding channel steel (10), and the side wall and the top of the cubic steel skeleton structure are formed by welding square pipes (11).

6. The air tightness test tool according to claim 4, wherein lifting columns (12) are welded at four corners of the bottom of the cubic steel skeleton structure (8).

7. The air-tightness test tool according to claim 1, wherein a door frame (15) is fixed on the side wall of the sealed box body (1) through a support plate (14), and the door frame forms the external interface (3).