CN218381483U - Air tightness detection device - Google Patents

Abstract

The application relates to an air tightness detection device, which includes a gas storage tank with a preset amount of gas, a test chamber and a barometer. The test chamber is used to accommodate the sample to be tested, and the test chamber and the gas storage tank pass through The pipelines are connected; the air pressure gauge is arranged on the air storage tank or the test chamber or between the air storage tank and the test chamber, and is used to detect the air pressure in the state of air pressure balance between the air storage tank and the test chamber. The air tightness detection device provided by the utility model only needs to place the sample to be tested in the test chamber, then input the gas in the gas storage tank into the test chamber, and read the value on the barometer after stabilization to judge whether the gas in the test chamber is stable. Whether there is an airtightness problem in the sample to be tested, and the components of the airtightness test device are simple and easy to operate, low in cost, small in overall space, relatively light and easy to carry and transport, suitable for various scenarios and locations.

Description

Air tightness detection device

technical field

The present application relates to the technical field of air tightness detection, in particular to an air tightness detection device.

Background technique

Since some key components of the existing equipment are inside the equipment, the external structural parts are often removed to replace the key internal parts during the repair process. It is difficult to judge whether the airtightness of the equipment is normal when the repair is completed It is difficult to place large-scale pneumatic equipment for inspection at the station, and a simple airtightness verification device is urgently needed to check whether the airtightness of the equipment is intact.

Utility model content

Based on this, it is necessary to provide an air tightness detection device.

An air tightness detection device, comprising:

A gas storage tank with a preset amount of gas pre-stored;

A test cavity, used to accommodate the sample to be tested, communicates with the gas storage tank through a pipeline; and

The air pressure gauge is arranged between the air storage tank or the test chamber or between the air storage tank and the test chamber, and is used to detect the air pressure balance between the air storage tank and the test chamber. air pressure.

In one embodiment of the present utility model, the air tightness detection device further includes an inflatable part connected to the gas storage tank for inputting a preset amount of gas into the gas storage tank .

In one embodiment of the present utility model, the air tightness detection device further includes a first switch valve, the first switch valve is arranged between the inflatable part and the gas storage tank, and is used to open or close An airflow channel between the inflatable part and the air storage tank.

In one embodiment of the present utility model, the first switching valve is a one-way valve.

In one embodiment of the present utility model, the air tightness detection device further includes a second switch valve, the second switch valve is arranged between the gas storage tank and the test chamber, and is used to open or Close the gas flow channel between the gas storage tank and the test chamber.

In one embodiment of the present invention, the test chamber includes a casing and a cover that can be sealed and connected, and the casing has a detection chamber for accommodating the sample to be tested, and the casing is also provided with a An opening communicating with the detection chamber, the sample to be tested is put into the accommodating chamber through the opening, and the cover is used to close the opening.

In one embodiment of the present invention, the test cavity further includes a first sealing member, the first sealing member is located between the housing and the cover, and is used to seal the opening.

In one embodiment of the present utility model, the test chamber further includes an inflatable adapter capable of sealing connection with the cover, the cover is provided with an inflatable port, and one end of the inflatable adapter passes through the pipe It communicates with the gas storage tank, and the other end communicates with the detection chamber through the gas filling port.

In one embodiment of the present utility model, the test chamber further includes a second seal, the second seal is located between the cover and the inflation adapter, and is used to seal the inflation port.

In one embodiment of the present invention, the cover and the housing are detachably connected by screws.

Compared with the prior art, the air tightness detection device only needs to place the sample to be tested in the test cavity, then input the gas in the gas storage tank into the test cavity, and read the value on the barometer after stabilization To judge whether the sample to be tested in the test chamber has an airtight problem, the overall detection method and detection structure are relatively simple, the detection cost is low, and the area of the used place is limited.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the traditional technology. Obviously, the accompanying drawings in the following description are only the present invention For some embodiments of the application, those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the air tightness detection device provided by the present application;

Fig. 2 is a schematic diagram of an enlarged structure at X in Fig. 1;

FIG. 3 is a partial structural schematic diagram of the air tightness detection device provided by the present application;

FIG. 4 is an exploded schematic view of a part of the air tightness detection device in FIG. 3 .

Reference signs: 100, air tightness detection device; 10, inflatable part; 20, first switch valve; 30, gas storage tank; 40, barometer; 50, second switch valve; 60, test cavity; 601, Detection chamber; 61, shell; 611, annular sealing groove; 612, opening; 62, cover; 621, inflation port; 63, first seal; 64, inflation adapter; 65, second seal; 70, Pipeline; 80, screws; 200, samples to be tested.

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

It should be noted that when a component is referred to as being “fixed on” or “set on” another component, it may be directly on the other component or there may also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for the purpose of illustration only and do not represent the only implementation Way.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this application, unless otherwise clearly specified and limited, a first feature is “on” or “under” a second feature, which means that the first feature is directly in contact with the second feature, or that the first feature and the second feature are indirectly contact through an intermediary. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or it just means that the first feature is higher in level than the second feature. "Below", "beneath" and "under" the first feature may mean that the first feature is directly below or obliquely below the second feature, or it just means that the level of the first feature is smaller than that of the second feature.

Unless otherwise defined, all technical and scientific terms used in the description of the present application have the same meaning as commonly understood by those skilled in the technical field of the present application. The terms used in the description of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The term "and/or" used in the specification of the present application includes any and all combinations of one or more related listed items.

Since some key components of the existing equipment are inside the equipment, the external structural parts are often removed to replace the key internal parts during the repair process. It is difficult to judge whether the airtightness of the equipment is normal when the repair is completed It is difficult to place large-scale pneumatic equipment for inspection at the station, and a simple airtightness verification device is urgently needed to check whether the airtightness of the equipment is intact.

Based on this, the present application provides an airtightness detection device 100 for detecting the airtightness of equipment, devices, etc. In the following embodiments, equipment, devices or other items that need to be tested for airtightness are referred to as the Sample 200.

Referring to Fig. 1, Fig. 1 is a schematic structural diagram of an airtightness detection device 100 provided by the present application; an airtightness detection device 100 includes a gas storage tank 30 pre-stored with a preset amount of gas, a test chamber 60 and a barometer 40, the test cavity 60 is used to accommodate the sample 200 to be tested, and the test cavity 60 is connected to the gas storage tank 30 through the pipeline 70; the air pressure gauge 40 is arranged on the gas storage tank 30 or the test cavity 60 or the gas storage tank 30 Between the test cavity 60 and the test cavity 60 , it is used to detect the air pressure of the air storage tank 30 and the test cavity 60 under the pressure balance state.

The air-tightness detection device 100 provided by the utility model adopts the form of external inflation to realize the detection of the air-tightness of the equipment. It only needs to place the sample 200 to be tested in the detection chamber 601 and read the value of the barometer 40. Airtightness judgment, the overall structure is simple, the airtightness judgment method is simple, and it is not easy to cause damage to the sample 200 to be tested.

The realization principle of the present utility model is that according to the ideal gas law equation PV=nRT, in the gas storage tank 30, since P and V can be controlled as a fixed value, the amount n of the gas substance obtained is also a fixed value; Gas (that is, the gas of the preset gas amount) is filled into the test chamber 60, and when V increases, P will decrease correspondingly, and then it can be judged whether the gas has entered the inside of the sample 200 to be tested, according to the test of the barometer 40 The obtained value can finally determine whether the sample 200 to be tested has a problem of poor airtightness.

Please refer to FIG. 1 again. Preferably, in this embodiment, the airtightness detection device 100 further includes an inflatable part 10, and the inflatable part 10 is connected to the gas storage tank 30 for inputting a preset amount of gas into the gas storage tank 30. gas. Preferably, in this embodiment, the inflatable element 10 is an air pump.

Further preferably, in this embodiment, the airtightness detection device 100 further includes a first switch valve 20, the first switch valve 20 is arranged between the inflatable part 10 and the gas storage tank 30, and is used to open or close the inflatable part 10 and the airflow passage between the gas storage tank 30.

Preferably, in this embodiment, the first switching valve 20 is a one-way valve. Such an arrangement can facilitate charging the gas storage tank 30 and avoid backflow of the gas in the gas storage tank 30 .

Preferably, in this embodiment, the airtightness detection device 100 further includes a second switch valve 50, the second switch valve 50 is arranged between the gas storage tank 30 and the test chamber 60, and is used to open or close the gas storage tank 30 and the air flow channel between the test chamber. Preferably, in this embodiment, the air pressure gauge 40 is disposed between the test cavity 60 and the air storage tank 30 , and the second switching valve 50 is disposed between the air pressure gauge 40 and the test cavity 60 .

It can be understood that one or both of the first on-off valve 20 and the second on-off valve 50 can be a manual valve or a solenoid valve.

Please refer to Fig. 1 again, and refer to Fig. 2 to Fig. 4 together. Fig. 2 is a schematic diagram of the enlarged structure at X in Fig. 1; FIG. 3 is an exploded schematic diagram of a partial structure of the airtightness detection device 100 . Preferably, in this embodiment, the test chamber 60 includes a casing 61 and a cover 62 that can be sealed and connected, and the casing 61 has a detection chamber 601 inside the casing 61 for accommodating the sample 200 to be tested. The cavity 601 is connected with an opening 612 through which the sample 200 to be tested is put into the containing cavity, and the cover 62 is used to close the opening 612 .

Preferably, in this embodiment, the test cavity 60 further includes a first seal 63 , the first seal 63 is located between the housing 61 and the cover 62 and is used to seal the opening 612 . It can be understood that, as long as the sealing can be achieved, the material and shape of the first sealing member 63 can be selected according to requirements.

Preferably, in this embodiment, the housing 61 is a cylinder, the opening 612 is opened at one end of the housing 61 , and the diameter of the opening 612 is smaller than that of the housing 61 .

Please refer to FIG. 4 again. In this embodiment, preferably, the casing 61 is provided with an annular sealing groove 611 on the peripheral side of the opening 612, and the first sealing member 63 is embedded in the annular sealing groove 611. More preferably, the cover The body 62 is detachably connected to the housing 61 through a screw 80 . In other words, after the first sealing member 63 is put into the annular sealing groove 611 of the casing 61, the cover body 62 and the casing body 61 can be tightened and sealed by the screws 80, and the screw parts 80 pass through the cover body 62 and are connected to the casing 61 is provided with the end wall of the side of the opening 612. During the tightening process of the screw member 80, the cover body 62 will be pressed against the housing 61, so that the first sealing member 63 can be sealed while the cover body 62 is connected to the housing 61. Compress to seal opening 612 .

It can be understood that, in other embodiments, the cover 62 and the housing 61 may also be connected through other connection methods, including but not limited to fastening by buckles.

Please refer to FIGS. 2 to 4 again. Preferably, in this embodiment, the test cavity 60 further includes an inflatable adapter 64 capable of sealingly connecting with the cover 62. The cover 62 is provided with an inflatable port 621. The inflatable adapter 64 One end communicates with the gas storage tank 30 through the pipeline 70 , and the other end communicates with the detection chamber 601 through the gas filling port 621 . The gas in the gas storage tank 30 is more conveniently input into the test chamber 60 through the pipeline 70 by using the inflatable adapter 64 to ensure a more stable testing process.

Please refer to Fig. 2 to Fig. 4 again, further, in this embodiment, the test chamber 60 further includes a second sealing member 65, the second sealing member 65 is located between the cover body 62 and the inflation adapter 64, and is used to seal the inflation Mouth 621. Preferably, the second sealing member 65 is an O-ring, and the inflatable adapter 64 and the cover body 62 are threaded and sealed through the O-ring. It can be understood that, in other embodiments, as long as the inflation port 621 can be sealed, the shape and material of the second sealing member 65 can be selected according to requirements.

The utility model realizes the detection process as follows:

When preparing for detection, first open the first on-off valve 20, close the second on-off valve 50, start the inflatable part 10, so that the inflatable part 10 can deliver gas to the gas storage tank 30, and the barometer 40 can detect and display the input storage tank at this time. The gas pressure value V in the gas tank 30 is _fixed to determine whether to charge the gas of the preset gas amount. When a certain pressure value V _is reached (the pressure value V can be verified according to the actual size of the sample 200 to be tested for airtightness). Circumstances are defined) stop inflating; close the first switch valve 20, then open the first and second switch valves 50, the gas will be automatically charged into the test chamber 60, and the reading value of the barometer 40 will gradually decrease thereupon, When it is reduced to a certain extent, that is, when the air pressure between the test cavity 60 and the air storage tank 30 is balanced, the barometer 40 will maintain a stable state, read the air pressure stability _test value V at this time, and compare V with the stable air pressure of _the good product. The _standard value V is compared to determine whether the airtightness of the sample 200 to be tested is good. If the airtightness of the tested sample 200 is intact, then the external gas from the gas tank 30 in the test cavity 60 will not enter the inside of the sample 200 to be tested, and the V _measurement should be equal to the V _standard ; if the detected sample 200 When there is a leakage problem in the airtightness, the gas will enter the inside of the device and the value of the barometer 40 will be significantly smaller than the value when there is no leakage, that is, the V _measurement will be less than the V _mark . After the test is completed, close the second on-off valve 50 and loosen the screw 80 on the cover 62 to take out the sample, so that multiple samples 200 to be tested can be tested repeatedly.

It should be noted that, the V _standard means that the test sample 200 determined to be a good product (good airtightness) is put into the test cavity 60, and other test conditions are kept unchanged (including the structure of the gas storage tank 30, the Assuming that the amount of gas is constant, the structure of the test cavity 60 is constant, etc.), the air pressure value V _measured by the barometer 40 is measured when the air pressure between the test cavity 60 and the gas storage tank 30 is balanced.

The air tightness detection device 100 provided by the utility model only needs to place the sample 200 to be tested in the test cavity 60, then input the gas in the gas storage tank 30 into the test cavity 60, and read the value on the air pressure gauge 40 after stabilization. The numerical value can determine whether the sample 200 to be tested in the test chamber 60 has airtightness problems, and the components of the airtightness test device are relatively light and easy to carry and transport, and are suitable for various scenarios and locations, including but not limited to after-sales Maintenance points and other small-scale testing places use scenarios, the structure is simple and easy to operate, the cost is low, and the overall space is small. The detection can be realized by inflating the outside of the tested equipment, and the opening 612 of the redundant appearance surface can be removed, so that the waiting time can be maintained. The external aesthetics and safety of the sample 200 were tested.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of this application should be based on the appended claims.

Claims (10)

1. An air tightness detection device, characterized in that, comprising: A gas storage tank with a preset amount of gas pre-stored; A test cavity, used to accommodate the sample to be tested, communicates with the gas storage tank through a pipeline; and The air pressure gauge is arranged between the air storage tank or the test chamber or between the air storage tank and the test chamber, and is used to detect the air pressure balance between the air storage tank and the test chamber. air pressure. 2. The airtightness detection device according to claim 1, characterized in that, the airtightness detection device further comprises an inflatable part connected to the gas storage tank for supplying the air to the gas storage tank Enter the gas of the preset gas volume into the tank. 3. The airtightness detection device according to claim 2, characterized in that, the airtightness detection device further comprises a first switch valve, the first switch valve is arranged between the inflatable part and the gas storage Between the tanks, it is used to open or close the airflow channel between the inflatable part and the air storage tank. 4. The air tightness detection device according to claim 3, wherein the first on-off valve is a one-way valve. 5. The air tightness detection device according to claim 1, characterized in that, the air tightness detection device further comprises a second switch valve, the second switch valve is arranged between the gas storage tank and the test Between the cavities, it is used to open or close the gas flow channel between the gas storage tank and the test cavity. 6. The airtightness detection device according to any one of claims 1 to 5, characterized in that, the test chamber comprises a casing and a cover capable of sealing connection, and the inside of the casing has a The detection cavity of the sample, the housing is also provided with an opening communicating with the detection cavity, the sample to be tested is put into the accommodating cavity through the opening, and the cover is used to close the opening . 7. The airtightness detection device according to claim 6, wherein the test cavity further comprises a first seal, the first seal is located between the housing and the cover, Used to seal the opening. 8. The air tightness testing device according to claim 6, wherein the test chamber further comprises an inflatable adapter capable of sealingly connecting with the cover, the cover is provided with an inflatable port, the One end of the charging adapter is connected to the gas storage tank through the pipeline, and the other end is connected to the detection chamber through the charging port. 9. The airtightness detection device according to claim 8, wherein the test chamber further comprises a second seal, the second seal is located between the cover and the inflatable adapter , for sealing the inflation port. 10 . The airtightness detection device according to claim 6 , wherein the cover and the housing are detachably connected by screws. 11 .

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