CN219200775U

CN219200775U - Portable device for detecting airtight container and replacing gas

Info

Publication number: CN219200775U
Application number: CN202320018936.1U
Authority: CN
Inventors: 郝程鹏; 包超鹏; 刘明刚; 陈模江; 张连明; 王京
Original assignee: Institute of Acoustics CAS
Current assignee: Institute of Acoustics CAS
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-06-16
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses a portable device for detecting the air tightness of a closed container and replacing gas, which comprises a valve body group, an air extracting device and a gas source device; the valve body group comprises a valve body (1), an air extraction end (13) of the valve body (1) is communicated with an air extraction device, an air inlet end (15) of the valve body (1) is communicated with an air source device, and a detection end (14) of the valve body (1) is communicated with a detected closed container; the air suction end (13) and the detection end (14) are communicated with each other, an on-off valve is arranged on the air passage, and the air inlet end (15) and the detection end (14) are communicated with each other, and the on-off valve is arranged on the air passage. The utility model has simple structure, reasonable design, convenient carrying and complete functions, is convenient for observing pressure and injecting replacement gas, and can safely, efficiently and accurately test the air tightness of the closed container.

Description

Portable device for detecting airtight container and replacing gas

Technical Field

The utility model belongs to the technical field of air tightness detection and gas replacement, and particularly relates to a portable device for detecting air tightness of a closed container and replacing gas.

Background

At present, the medium-sized and small-sized submersible or the pressure vessel arranged outdoors is required to be subjected to air tightness detection, inert gas is injected into the submersible or the pressure vessel after the air tightness detection is finished to ensure that components are dry and are not corroded by air, and the conventional treatment mode is basically to complete gas replacement and then transport integrally through splicing the air tightness detection in a factory building, or to build a vacuum and gas replacement unit in the outdoor field, so that the cost is high, the period is long, the detection efficiency is low, and the progress of projects is greatly influenced.

Therefore, there is an urgent need for a portable device for detecting the airtight container and replacing gas, which has a simple structure, is convenient to operate, can safely, efficiently and accurately test the airtight property and complete the gas replacement.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a portable device for detecting the air tightness and the replacement gas of the closed container, which has the advantages of simple structure, reasonable design, convenient carrying and complete functions, is convenient for observing the pressure and flushing the replacement gas, and can safely, efficiently and accurately test the air tightness of the closed container.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the portable device for detecting the air tightness of the closed container and replacing the air comprises a valve body group, an air extracting device and an air source device;

the valve body group comprises a valve body, the air extraction end of the valve body is communicated with the air extraction device, the air inlet end of the valve body is communicated with the air source device, and the detection end of the valve body is communicated with the sealed container to be detected; the air inlet end is connected with the detection end through an air inlet pipe, and the air inlet end is connected with the detection end through an air inlet pipe.

Further, the valve body group also comprises a fixer and a pressure gauge, wherein the fixer is fixed on the valve body, and the pressure gauge is fixedly connected with the valve body and is communicated with an internal gas circuit of the valve body.

Preferably, the pressure gauge is an absolute positive and negative pressure gauge.

Preferably, the on-off valve is a needle valve.

Further, the air source device comprises a high-pressure air cylinder, and the high-pressure air cylinder is communicated with the air inlet end of the valve body through a pressure reducing valve.

Further, the air exhaust device comprises an electric vacuum pump, and the electric vacuum pump is communicated with the air exhaust end through an electromagnetic valve.

Still further, the air extractor further comprises a switch for switching on or off the electric vacuum pump and a vacuum gauge for measuring the vacuum degree of the electric vacuum pump.

In the utility model, the pipeline connection among the components is realized by adopting a hose.

The valve body group is used for blocking or opening the flow of gas, and the gas source device is used for regulating the pressure of the gas.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model has simple structure and convenient and quick installation and test;

2. when the utility model is used, the hose is used for connecting the needle valve, the air source device and the tested closed container;

3. the fixer is arranged at the rear part of the valve body group, the fixer is connected with the valve body group, the fixer can fix the valve body group on the surface of the tested closed container, the valve body group can be not held by hand during vacuumizing and pressure maintaining, errors caused by shaking of the valve body group or damage to the valve body group by falling on the ground by injuring personnel are reduced, and the safety is improved.

4. The utility model is provided with the electric control box, a switch, an electromagnetic valve and a vacuum gauge are arranged in the electric control box, the vacuum gauge can read the current pressure value to judge whether the needle valve needs to be adjusted to reduce the gas flow so as to reach the target pressure value, and the electromagnetic valve can automatically close the gas path when the switch is closed to prevent inaccurate pressure caused by gas leakage.

Drawings

FIG. 1 is a schematic diagram of a front structure of a portable device according to the present utility model;

fig. 2 is a schematic diagram of the back structure of the portable device of the present utility model.

Marked in the figure as:

a valve body 1; a hose 2; a pressure gauge 3; a switch valve 4; a pressure reducing valve 5; a high pressure gas cylinder 6; an electric vacuum pump 7; a holder 8; a switch 9; a solenoid valve 10; a vacuum gauge 11; the container 12 is closed.

Detailed Description

The technical scheme of the utility model is described in detail below with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1-2, the present embodiment provides a portable device for detecting the tightness of a closed container and replacing gas, which comprises a valve body set, an air extracting device and a gas source device;

the valve body group comprises a valve body 1, a pressure gauge 3 and a fixer 8;

the air source device comprises a high-pressure air cylinder 6 and a pressure reducing valve 5 which are connected in sequence;

the air extracting device comprises an electric vacuum pump 7, a switch 9, an electromagnetic valve 10 and a vacuum meter 11;

the air suction end 13 of the valve body 1 is communicated with the electric vacuum pump through a hose 2, the air inlet end 15 of the valve body 1 is communicated with the air source device through the hose 2, the detection end 14 of the valve body 1 is communicated with the detected closed container 12, and the valve body group comprises switching valves 4 arranged on two sides of the valve body 1.

The pressure gauge 3 is arranged on the upper portion of the valve body group, and the pressure gauge 3 is connected with the valve body group.

The fixer 8 is arranged at the rear part of the valve body group, and the fixer 8 is connected with the valve body group.

The switch 9, the electromagnetic valve 10 and the vacuum gauge 11 form an electric control box, and the electric control box is connected with the electric vacuum pump.

The switch valve 4 adopts a needle valve, and the pressure gauge 3 adopts an absolute positive pressure gauge and an absolute negative pressure gauge.

The specific working process of the embodiment is as follows:

during detection, the air extraction end 13 of the valve body group is communicated with the electric vacuum pump 7 through the hose 2, the air inlet end 15 of the valve body group is communicated with the air source device through the hose 2, the detection end 14 of the valve body group is communicated with the detected closed container 12, the needle valve of the air inlet end 15 is closed, the needle valve of the air extraction end 13 is opened, the electric control box switch 9 is opened to carry out air extraction, the air extraction end 13 is closed for a certain time when the target vacuum degree is reached, and the air pressure change in the air channel is obtained by observing the absolute positive and negative pressure gauge 3 so as to obtain the air tightness detection result of the closed container 12.

When the air tightness detection reaches the qualification standard, the pressure reducing valve 5 in the air source device is adjusted to a preset pressure, the valve at the air inlet end 15 is opened for inflation, and the valve at the air inlet end 15 is closed to complete air replacement when the pressure gauge 3 reaches a preset pressure value.

The switch 9, the electromagnetic valve 10 and the vacuum gauge 11 are arranged in the electric control box, the vacuum gauge 11 can approximately read the current pressure value to judge whether the needle valve needs to be adjusted to enable the gas flow to be reduced so as to reach the target pressure value, and the electromagnetic valve 10 can automatically close the gas path when the switch 9 is closed to prevent the pressure from being inaccurate due to gas leakage.

The utility model may be practiced without these specific details, using any knowledge known in the art.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and are not limiting. Although the present utility model has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the appended claims.

Claims

1. The portable device for detecting the air tightness of the closed container and replacing the air is characterized by comprising a valve body group, an air extracting device and an air source device;

the valve body group comprises a valve body (1), an air extraction end (13) of the valve body (1) is communicated with an air extraction device, an air inlet end (15) of the valve body (1) is communicated with an air source device, and a detection end (14) of the valve body (1) is communicated with a detected closed container; the air suction end (13) and the detection end (14) are communicated with each other, an on-off valve is arranged on the air passage, and the air inlet end (15) and the detection end (14) are communicated with each other, and the on-off valve is arranged on the air passage.

2. A portable device for detecting tightness of a closed container and displacing gas according to claim 1, wherein the valve body group further comprises a holder (8), the holder (8) being fixed to the valve body (1).

3. The portable device for detecting tightness and replacement gas of a closed container according to claim 1, wherein the valve body group further comprises a pressure gauge (3), and the pressure gauge (3) is fixedly connected with the valve body (1) and is communicated with an internal gas path of the valve body (1).

4. A portable device for detecting tightness of a closed container and for displacing gas according to claim 3, wherein said pressure gauge (3) is an absolute positive and negative pressure gauge.

5. The portable device for detecting tightness and replacement gas of a closed container according to claim 1, wherein the on-off valve is a needle valve.

6. A portable device for detecting tightness of a closed container and for displacing gas according to claim 1, characterized in that the gas source means comprise a high-pressure gas cylinder (6), said high-pressure gas cylinder (6) being in communication with the inlet end (15) of the valve body (1) through a pressure reducing valve (5).

7. A portable device for detecting tightness and displacing gas in a closed container according to claim 1, wherein the air extracting device comprises an electric vacuum pump (7), the electric vacuum pump (7) being in communication with an air extracting end (13) through an electromagnetic valve (10).

8. The portable device for detecting tightness and replacement of gas in a closed container according to claim 7, wherein the air extracting device further comprises a switch (9) and a vacuum gauge (11), the switch (9) is used for switching on or off the electric vacuum pump (7), and the vacuum gauge (11) is used for measuring vacuum degree of the electric vacuum pump (7).