CN212988716U - Quick helium leak detection device - Google Patents

Abstract

The utility model discloses a quick helium leak hunting device, including helium leak hunting instrument, clamp, base and thimble, the clamp contains upper and lower two parts, and clamp and base full weld are fixed integrative, and the determinand of clamp, base and helium leak hunting instrument match fixedly, and the leak hunting hole that the determinand of thimble location was equipped with. The utility model discloses simple structure, firm, small, can effectual laminating determinand, applicable in the cylindrical object that detects the axial seal, it is convenient to install during the use.

Description

Quick helium leak detection device

Technical Field

The utility model relates to a testing arrangement, more specifically say, a quick helium leak hunting device, be applicable to the axial seal helium leak hunting test of cylindrical structure.

Background

Welding is the main means of combining and fixing a plurality of objects at present, and in many fields, the reliability and the leakproofness of a welding line must be guaranteed after welding, and the reliability and the leakproofness of the welding line can be effectively verified through nondestructive inspection. The helium leak detection is one of nondestructive tests, and the leak rate of a detected leak hole can be obtained by comparing the detected leak hole with a standard leak hole on a leak detector by adopting a comparison method. Helium leak detection is an irreplaceable means for detecting leak rate in nondestructive inspection.

The society of China is continuously developed, the scale is continuously enlarged, the production technology is continuously improved, welding seams with high requirements are continuously increased, and the helium leak detection is widely applied to various fields. Different methods are required for inspection for different structures.

At present, the tool for the cylindrical helium leak detection test is complex in structure, difficult to install and unsatisfactory in sealing effect, so that the test process is not only troublesome, and the result has great uncertainty.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a quick helium leak hunting device to solve current cylindrical structure and cause the problem of inspection difficulty because of the contact surface is not good effectively sealed.

In order to solve the technical problem, the utility model discloses a following technical scheme solves:

the utility model provides a quick helium leak detection device, includes helium leak detection instrument, clamp, base and thimble, the clamp contains upper and lower two parts, clamp and base full weld are fixed integrative, the fixed determinand of clamp, the base with helium leak detection instrument matches fixedly, the thimble location the leak hunting hole that the determinand was equipped with.

Furthermore, the device also comprises a sealing gasket which is flatly laid and fixed on the hoop so as to increase the sealing performance of the hoop and the object to be detected.

Furthermore, a helium leakage detecting hole is formed in the center of the bottom end of the base and penetrates through the lower part of the clamp; and the sealing gasket is provided with an opening corresponding to the hole of the hoop.

And further, the thimble penetrates through the helium leakage detecting hole of the base to position the position of the helium leakage detecting hole of the object to be detected during measurement.

Furthermore, the object to be measured is cylindrical, and the clamp is matched with the sealing gasket to fix and seal the object to be measured.

The utility model discloses following beneficial effect has:

1. the clamp is simple to fasten, does not need to be additionally provided with other tools, and only needs to be manually disassembled and assembled;

2. the sealing gasket is made of deformable materials such as silicon rubber and the like, so that the service life is long, and the sealing performance is good;

3. the circular arc matched with the circular arc structure is adopted, so that the device can be used for testing objects with various sizes;

4. the clamp can adopt the existing specification in the market, and is convenient to process and manufacture;

5. the thimble positioning method is adopted, so that the position offset phenomenon of a leakage detecting hole of the test object is effectively avoided;

6. the whole scheme has simple processing and low requirement, and does not need a precise instrument for processing.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a diagram of the usage state of the present invention

Detailed Description

The following description of the embodiments of the present invention is provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.

As shown in figure 1, the utility model discloses a quick helium leak detection device includes clamp 1, seal gasket 2, base 3, thimble 4. The clamp 1 comprises an upper part and a lower part, the object to be detected is cylindrical, and the clamp 1 is matched with the sealing gasket 2 to fix and seal the object.

The clamp 1 and the base 3 are fixed into a whole by full welding. Be equipped with helium leak hunting hole from 3 bottom centers of base, the hole runs through to clamp 1 lower part, and seal gasket 2 tiling is fixed on clamp 1, carries out the trompil to seal gasket 2 same position according to the hole site of clamp 1.

When the device is used, as shown in figure 2, the thimble 4 is used for aligning the base 3 with the helium leakage detecting hole of the test object A, then the clamp 1 is used for fastening the test object A, the contact surface of the test object is tightly attached by utilizing the stress deformation of the sealing gasket 2, the external air is isolated, and the effect of eliminating interference is achieved. And after fastening is finished, fixing the base 3 and a helium leakage detecting instrument, and performing helium leakage detecting test.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a quick helium leak detection device, includes helium leak detection instrument, clamp, base and thimble, the clamp contains upper and lower two parts, its characterized in that, clamp and base full weld are fixed integrative, the fixed determinand of clamp, the base with helium leak detection instrument matches fixedly, the thimble location the leak hunting hole that the determinand was equipped with.

2. The rapid helium leak detection device of claim 1 further comprising a sealing gasket mounted flat on said clamp to increase the seal between the clamp and said test object.

3. The rapid helium leak detection device according to claim 2, wherein a helium leak detection hole is formed in the center of the bottom end of the base, and penetrates through the lower portion of the clamp; and the sealing gasket is provided with an opening corresponding to the hole of the hoop.

4. The rapid helium leak detection device according to claim 3, wherein the thimble penetrates from the helium leak detection hole of the base to position the helium leak detection hole of the object to be detected during measurement.

5. The rapid helium leak detector of any of claims 2-4, wherein the test object is cylindrical and the clamp is mated with a sealing gasket to hold it in place.

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