CN216594001U

CN216594001U - Sealing leakage detection equipment for shell

Info

Publication number: CN216594001U
Application number: CN202123191960.5U
Authority: CN
Inventors: 颜树杭
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-19
Filing date: 2021-12-19
Publication date: 2022-05-24
Anticipated expiration: 2031-12-19

Abstract

The utility model discloses a sealed leakage detection device of a shell, which is used for screening a leakage workpiece by changing the light guide rate of an optical fiber probe and further changing the output signal of an optical fiber switch when leakage gas is guided into a cavity of a leakage detection valve body and colored liquid in the cavity moves downwards under the action of atmospheric pressure.

Description

Sealing leakage detection equipment for shell

Technical Field

The utility model relates to a sealing leakage detection device of a shell, in particular to a leakage prevention test of objects with sealing requirements, such as various stretching pieces, injection-molded pieces, welding pieces, riveting pieces and the like.

Background

At present, leakage-proof tests of objects with sealing requirements in oil filter manufacturers, various cap manufacturers, can manufacturers, valves manufacturers and bottle manufacturers generally adopt immersion tests, comparison tests of front and rear air pressure differences and other methods for judging the leakage-proof tests, and the methods have the defects of high test cost, long period and the like, so that the leakage-proof tests need to be improved.

Disclosure of Invention

In order to solve the defects in the technology, the utility model provides the following technical scheme: four studs (2) are arranged on a base (6), a panel (21) and a top plate (1) are respectively fixed on the studs (2) through nuts, an air cylinder (7) is arranged on the top plate (1), a gas collecting hood (4) is fixed on an air cylinder ejector rod through a flange (3), a positioning spring (37) is fixed inside the gas collecting hood (4), when the air cylinder (7) moves downwards, a workpiece (5) to be detected is fixed on the upper plane of the panel (21) through the spring (37), an air pipe (33) is respectively connected with the gas collecting hood (4) and an air pipe connector of a leakage detection valve body (31), a transparent pipe (32) is tightly matched in a cavity of the leakage detection valve body (31), two optical fiber probes (34) are respectively arranged on two sides of the leakage detection valve body (31) and are positioned on the same plane with an air inlet hole of the leakage detection valve body (31), the leakage detection valve body (31) is fixed on the panel (21) through a screw (36), colored liquid in the cavity of the leakage detection valve body (31) is injected through the water injection port and is communicated with the external atmospheric pressure.

The utility model is characterized in that: when the gas leaked from the tested object is guided into the body cavity of the leak detection valve through the air pipe, the colored liquid in the body cavity moves downwards under the action of the atmospheric pressure, and when the colored liquid is lower than the optical fiber probe, the optical fiber switch has signal output due to the change of the light guide rate, and then the leaked products are sorted out

Compared with the prior art, the utility model has the beneficial effects that: the integrated design has high integral response speed, and the inner diameter of the pipeline in the body cavity of the leakage detection valve can be made very thin, so that the colored liquid level can be obviously reduced by very little gas, and the instantaneous control and measurement can be performed on the micro-leakage product.

Drawings

Fig. 1 is a schematic structural view of a seal leak detection apparatus of a casing.

Detailed Description

The following detailed description of embodiments of the present patent disclosure will be made with reference to the accompanying drawings.

Please refer to FIG. 1

A sealed leakage detection device for a shell is characterized in that four studs (2) are mounted on a base (6), a panel (21) and a top plate (1) are fixed on the studs (2) through nuts respectively, an air cylinder (7) is mounted on the top plate (1), an air collecting hood (4) is fixed on an air cylinder ejector rod through a flange (3), a positioning spring (37) is fixed inside the air collecting hood (4), when the air cylinder (7) moves downwards, a workpiece to be detected (5) is fixed on the upper plane of the panel (21) through the spring (37), an air pipe (33) is connected to an air pipe connector of the air collecting hood (4) and a leakage detection valve body (31) respectively, a transparent pipe (32) is tightly assembled in a cavity of the leakage detection valve body (31), two optical fiber probes (34) are mounted on two sides of the leakage detection valve body (31) respectively and are positioned on the same plane with an air inlet hole of the leakage detection valve body (31), and the leakage detection valve body (31) is fixed on the panel (21) through a screw (36), colored liquid in the cavity of the leakage detection valve body (31) is injected through the colored liquid injection port and is communicated with the external atmospheric pressure.

The working sequence and principle of the utility model are as follows: when the cylinder (7) moves downwards, the workpiece to be detected (5) is fixed on the upper plane of the panel (21) through the spring, high-pressure air enters through a high-pressure air inlet on the lower plane of the panel (21), when the workpiece to be detected (5) leaks, leaked gas flows into a cavity of the leakage detection valve body (31) through the air pipe (33), liquid level of colored liquid in the cavity moves downwards under the action of atmospheric pressure, and when the colored liquid level is lower than the optical fiber probe (34), the optical fiber switch has signal output due to change of light guide rate, and then leaked products are sorted out.

The device is only used for explaining a leakage detection method for reducing the liquid level of colored liquid by leaking gas, further changing the light guide rate, further changing the output signal of the optical fiber switch and further discriminating a leaked workpiece.

The above detailed description of the embodiments of the present invention is not intended to limit the present invention to the above embodiments, and various modifications and changes of the technical solution of the present invention, which are made by those skilled in the art without departing from the spirit of the present invention, should fall within the protection scope defined by the claims of the present invention.

Claims

1. A sealed leakage detection device of a shell is characterized in that four studs (2) are arranged on a base (6), a panel (21) and a top plate (1) are respectively fixed on the studs (2) through nuts, an air cylinder (7) is arranged on the top plate (1), an air collecting hood (4) is fixed on an air cylinder ejector rod through a flange (3), a positioning spring (37) is fixed inside the air collecting hood (4), when the air cylinder (7) moves downwards, a workpiece to be detected (5) is fixed on the upper plane of the panel (21) through the spring (37), an air pipe (33) is respectively connected with the air pipe connector of the air collecting hood (4) and a leakage detection valve body (31), a transparent pipe (32) is tightly assembled in a cavity of the leakage detection valve body (31), two optical fiber probes (34) are respectively arranged on two sides of the leakage detection valve body (31) and are positioned on the same plane with an air inlet hole of the leakage detection valve body (31), the leakage detection valve body (31) is fixed on the panel (21) through a screw (36), colored liquid in the cavity of the leakage detection valve body (31) is injected through the water injection port and is communicated with the external atmospheric pressure.