CN219200775U - A portable device for testing airtightness of airtight containers and displacing gas - Google Patents

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

A portable device for testing airtightness of airtight containers and displacing gas

technical field

The utility model belongs to the technical field of airtightness detection and gas replacement, in particular to a portable device for detecting the airtightness of an airtight container and replacing gas.

Background technique

At present, small and medium-sized submersibles or pressure vessels installed outdoors need to be tested for air tightness. After the air tightness test is completed, an inert gas needs to be injected into the interior to ensure that the components are dry and not corroded by the air. The current treatment methods are basically It is to complete the gas replacement by assembling in the factory for air tightness testing and then transport it as a whole, or build a vacuum and gas replacement unit outdoors, which is costly, long cycle and low detection efficiency, which greatly affects the progress of the project.

Therefore be badly in need of a kind of simple in structure, easy to operate, a kind of portable device that is used for detecting airtightness of airtight container and replacement gas that can test airtightness safely and efficiently and accurately and complete gas replacement.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides a portable device for detecting the airtightness of the airtight container and displacing gas. The utility model has the advantages of simple structure, reasonable design, convenient carrying and complete functions. The device is convenient for observing the pressure And flush into the replacement gas, which can safely, efficiently and accurately test the airtightness of the airtight container.

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

A portable device for detecting the airtightness of an airtight container and displacing gas, the portable device includes a valve body group, an air extraction device and a gas source device;

The valve body group includes a valve body, the air suction end of the valve body is connected to the air suction device, the air intake end of the valve body is connected to the air source device, and the detection end of the valve body is connected to the airtight container to be tested; An on-off valve is arranged on the air connection between the suction end and the detection end, and an on-off valve is arranged on the air connection between the air intake end and the detection end.

Further, the valve body group further includes a holder and a pressure gauge, the holder is fixed on the valve body, and the pressure gauge is fixedly connected with the valve body and communicated with the internal air passage of the valve body.

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

Preferably, the switching valve is a needle valve.

Further, the gas source device includes a high-pressure gas cylinder, and the high-pressure gas cylinder communicates with the inlet end of the valve body through a pressure reducing valve.

Further, the air extraction device includes an electric vacuum pump, and the electric vacuum pump communicates with the air extraction end through a solenoid valve.

Furthermore, the air extraction device further includes a switch and a vacuum gauge, the switch is used to turn on or off the electric vacuum pump, and the vacuum gauge is used to measure the vacuum degree of the electric vacuum pump.

In the utility model, the pipeline connections between the components are connected by flexible pipes.

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

Compared with the prior art, the beneficial effects of the utility model are:

1. The utility model has a simple structure and is convenient and quick to install and test;

2. When the utility model is in use, the needle valve, the air source device and the airtight container to be tested are connected by a hose;

3. The fixer of the utility model is arranged at the back of the valve body group, and the fixer is connected with the valve body group. The fixer can fix the valve body group on the surface of the airtight container to be tested, and it is not necessary to hold the valve when vacuuming and maintaining pressure. The body group reduces the error caused by the shaking of the valve body group or falls to the ground and injures personnel and damages the valve body group to improve safety.

4. The utility model is equipped with an electric control box, which is equipped with a switch, a solenoid valve, and a vacuum gauge. The vacuum gauge can read the current pressure value to judge whether it is necessary to adjust the needle valve to reduce the gas flow to achieve the target pressure value. The solenoid valve can automatically close the gas circuit when the switch is closed to prevent gas leakage from causing pressure inaccuracy.

Description of drawings

Fig. 1 is the front structure schematic diagram of the portable device of the present utility model;

FIG. 2 is a schematic diagram of the rear structure of the portable device of the present invention.

Labeled in the figure:

Valve body 1; hose 2; pressure gauge 3; switch valve 4; pressure reducing valve 5; high pressure cylinder 6; electric vacuum pump 7; holder 8; switch 9; solenoid valve 10; vacuum gauge 11;

Detailed ways

The technical solutions of the present utility model will be described in detail below in conjunction with the accompanying drawings and embodiments.

Example 1

As shown in Figure 1-2, this embodiment provides a portable device for detecting the airtightness of a closed container and replacing gas, including a valve body group, an air extraction device and a gas source device;

The valve body group includes a valve body 1, a pressure gauge 3, and a retainer 8;

The gas source device includes a high-pressure gas cylinder 6 and a pressure reducing valve 5 connected in sequence;

The air extraction device includes an electric vacuum pump 7, a switch 9, a solenoid valve 10 and a vacuum gauge 11;

The suction end 13 of the valve body 1 is connected to the electric vacuum pump through the hose 2, the air intake end 15 of the valve body 1 is connected to the air source device through the hose 2, and the detection end 14 of the valve body 1 is connected to the measured An airtight container 12 , the valve body group includes on-off valves 4 arranged on both sides of the valve body 1 .

The pressure gauge 3 is arranged on the upper part 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 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 is a needle valve, and the pressure gauge 3 is an absolute positive and negative pressure gauge.

The specific work process of this embodiment is:

During detection, the suction end 13 of the valve body group is connected to the electric vacuum pump 7 through the hose 2, the air inlet end 15 of the valve body group is connected to the air source device through the hose 2, and the detection end 14 of the valve body group is connected to the airtight device under test. Container 12, close the needle valve valve at the intake end 15, open the needle valve valve at the exhaust end 13, turn on the switch 9 of the electric control box to pump air, close the valve at the exhaust end 13 for a certain period of time when the target vacuum degree is reached, and observe the absolute positive and negative The pressure gauge 3 obtains the air pressure change in the gas path to obtain the airtightness test result of the airtight container 12 .

When the air tightness test reaches the qualified standard, adjust the pressure reducing valve 5 in the air source device to the predetermined pressure, open the valve 15 at the inlet end to inflate, observe that the pressure gauge 3 reaches the predetermined pressure value, and close the valve 15 at the inlet end to complete the gas replacement.

The electric control box is equipped with a switch 9, a solenoid valve 10, and a vacuum gauge 11. The vacuum gauge 11 can roughly read the current pressure value to judge whether it is necessary to adjust the needle valve to reduce the gas flow to achieve the target pressure value. When the switch 9 is turned off, the gas path is automatically closed to prevent gas leakage from causing pressure inaccuracy.

The content of the utility model that is not specified in detail can adopt the conventional technical knowledge in this field.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than limit them. Although the utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that any modification or equivalent replacement of the technical solution of the utility model does not depart from the spirit and scope of the technical solution of the utility model, and all should cover In the scope of the claims of the present utility model.

Claims (8)

1. A portable device for detecting the airtightness of an airtight container and displacing gas, characterized in that, said portable device comprises a valve body group, an air extraction device and a gas source device; The valve body group includes a valve body (1), the air suction end (13) of the valve body (1) communicates with the air extraction device, and the air intake end (15) of the valve body (1) communicates with the air source device, The detection end (14) of the valve body (1) communicates with the airtight container to be tested; a switching valve is set on the communication air path between the suction end (13) and the detection end (14), and the air intake end (15) is connected to the An on-off valve is arranged on the communication air path of the detection end (14). 2. A portable device for detecting the airtightness of an airtight container and displacing gas according to claim 1, wherein the valve body group also includes a retainer (8), and the retainer (8) fixed on the valve body (1). 3. A portable device for detecting the airtightness of an airtight container and displacing gas according to claim 1, wherein the valve body group also includes a pressure gauge (3), and the pressure gauge (3) It is fixedly connected with the valve body (1) and communicated with the internal gas path of the valve body (1). 4. A portable device for detecting the airtightness of an airtight container and displacing gas according to claim 3, characterized in that the pressure gauge (3) is an absolute positive and negative pressure gauge. 5 . A portable device for detecting the airtightness of an airtight container and displacing gas according to claim 1 , wherein the on-off valve is a needle valve. 6 . 6. A kind of portable device for detecting airtightness of airtight container and replacement gas according to claim 1, is characterized in that, described gas source device comprises high-pressure gas cylinder (6), and described high-pressure gas cylinder (6 ) communicates with the intake port (15) of the valve body (1) through the pressure reducing valve (5). 7. A kind of portable device for detecting the airtightness of airtight container and displacement gas according to claim 1, it is characterized in that, described air pumping device comprises electric vacuum pump (7), and described electric vacuum pump (7) passes The solenoid valve (10) communicates with the suction port (13). 8. A kind of portable device that is used to detect the airtightness of airtight container and displacement gas according to claim 7, is characterized in that, described air pumping device also comprises switch (9) and vacuum gauge (11), and described The switch (9) is used to turn on or off the electric vacuum pump (7), and the vacuum gauge (11) is used to measure the vacuum degree of the electric vacuum pump (7).

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