WO2021103245A1 - Leakage detection jig - Google Patents

Abstract

A leakage detection jig, comprising a base (1), a sealing and pressing mechanism (2) located above the base (1), an air cylinder, and a water column (3) provided on the base (1). The base (1) is provided with a fixed position (4); the fixed position (4) is communicated with the bottom of the water column (1) by means of a plurality of connecting pipelines; an air outlet is formed in the upper end of the water column (1); and the sealing and pressing mechanism (2) is located over the fixed position (4).

Description

A leak detection jig Technical field

The invention relates to a leak detection jig.

Background technique

At present, the parts need to be tested for airtightness when they are delivered from the factory. Therefore, the parts need to be tested for airtightness to ensure that the airtightness of different parts meets the required standards under different conditions.

Summary of the invention

The purpose of the present invention is to provide a leak detection jig, which can realize the leak detection of the workpiece.

In order to achieve the above-mentioned object, the present invention provides a leak detection tool, which includes a base, a sealing and pressing mechanism located above the base, an air cylinder, and a water column arranged on the base; the base is provided with a fixed position, so The fixed position is communicated with the bottom of the water column through a plurality of connecting pipes, the upper end of the water column is provided with an air outlet, and the sealing and pressing mechanism is located directly above the fixed position.

In the above-mentioned leak detection tool, the gas storage cylinder is connected with a barometer, and the barometer is arranged on the water column.

In the above-mentioned leak detection tool, the sealing and pressing mechanism is fixed directly above the fixed position by a support frame.

In the above-mentioned leak detection tool, the supporting frame includes a supporting plate and a supporting column connecting the supporting plate and the base, and the sealing and pressing mechanism is arranged on the supporting plate.

In the above-mentioned leak detection jig, the number of the support pillars is four.

In the above-mentioned leak detection tool, the sealing and pressing mechanism includes a hydraulic cylinder fixed to the support plate and a sealing block connected with an end of the hydraulic cylinder facing the fixed position.

In the above-mentioned leak detection tool, the water column includes a column with a containing cavity inside, and a liquid is arranged inside the column; the column is transparent.

Compared with the prior art, the leakage test tool provided by the above technical solution has beneficial effects including: placing the workpiece to be tested on a fixed position, and compressing the upper end surface of the workpiece through a sealing and pressing mechanism Seal to ensure the tightness of the upper end of the work piece, and connect the work piece through the gas cylinder to transport gas. When the work piece leaks, the gas flows through the fixed pipe to the water column to generate bubbles. At this time, you can know whether the work piece is leaking. And by setting up multiple pipes, different positions in the workpiece are tested.

Description of the drawings

Fig. 1 is a schematic diagram of the structure of the leak detection jig of the present invention.

Among them, 1-base, 2-seal pressing mechanism, 21-hydraulic cylinder, 22-seal block, 3-water column, 4-fixed position, 5-barometer, 6-support frame, 61-support plate, 62-support column.

Detailed ways

The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

Please refer to Figure 1, a leak detection tool provided by the present invention includes a base 1, a sealing and pressing mechanism 2 located above the base 1, an air reservoir, and a water column 3 arranged on the base 1; the base 1 is set and fixed Position 4, the fixed position 4 communicates with the bottom of the water column 3 through a number of connecting pipes, the upper end of the water column 3 is provided with an air outlet, and the sealing and pressing mechanism 2 is located directly above the fixed position 4.

Based on the above technical features, by placing the workpiece to be tested on the fixed position 4, and compressing and sealing the upper end surface of the workpiece through the sealing and pressing mechanism 2, the tightness of the upper end of the workpiece is ensured, and the workpiece is connected through an air cylinder. When the work piece leaks, the gas flows through the pipe of the fixed position 4 to the water column 3 to produce bubbles. At this time, it can be known whether the work piece is leaking, and multiple pipes are set to test different positions of the work piece.

The air cylinder is connected with a barometer 5, which is arranged on the water column 3, and the output air pressure of the air cylinder is detected by the barometer 5, which is convenient for observing the air tightness of the workpiece under different air pressures.

The sealing and pressing mechanism 2 is fixed directly above the fixed position 4 by a supporting frame 6. The supporting frame 6 includes a supporting plate 61 and a supporting column 62 connecting the supporting plate 61 and the base 1. The sealing and pressing mechanism 2 is arranged on the supporting plate 61, The number of the supporting pillars 62 is four, which realizes the support of the seal pressing mechanism 2.

The seal pressing mechanism 2 includes a hydraulic cylinder 21 fixed to the support plate 61 and a sealing block 22 connected to the end of the hydraulic cylinder 21 facing the fixed position 4. The hydraulic cylinder 21 pushes the sealing block 22 to abut against the workpiece to realize the sealing of the workpiece .

The water column 3 includes a column with a containing cavity inside, and a liquid is arranged inside the column; the column is transparent, and the bubbling condition of the water column 3 can be easily observed through the transparent column.

In the description of the present invention, it should be noted that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying The description does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected", and "connected" should be understood in a broad sense unless otherwise clearly specified and limited. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood in specific situations.

In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be made. It is regarded as the protection scope of the present invention.

Claims (7)

A leak detection jig, which is characterized in that it comprises a base, a sealing and pressing mechanism located above the base, an air storage cylinder, and a water column arranged on the base; the base is provided with a fixed position, and the fixed position is connected by a plurality of connections The pipeline communicates with the bottom of the water column, the upper end of the water column is provided with an air outlet, and the sealing and pressing mechanism is located directly above the fixed position. The leak detection tool according to claim 1, wherein the gas storage cylinder is connected with a barometer, and the barometer is arranged on the water column. The leak detection tool according to claim 1, wherein the sealing and pressing mechanism is fixed directly above the fixed position by a support frame. The leak detection fixture of claim 3, wherein the support frame comprises a support plate and a support column connecting the support plate and the base, and the sealing and pressing mechanism is arranged on the support plate. The leak detection jig according to claim 4, wherein the number of the support pillars is four. The leak detection tool according to claim 4, wherein the sealing and pressing mechanism comprises a hydraulic cylinder fixed to the support plate and a sealing block connected to an end of the hydraulic cylinder facing the fixed position. The leak detection tool according to claim 1, wherein the water column comprises a column with a containing cavity inside, and a liquid is arranged inside the column; the column is transparent.

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