Air tightness testing device

Abstract

The utility model relates to an air tightness testing device, comprising a pedestal provided with an air pressure testing area and an air inlet channel; the upper cover is provided with a liquid testing area and a liquid inlet channel, and the liquid testing area corresponds to the air pressure testing area; the thin film material comprises a frame and an air tightness testing area, the frame is connected with the base and the upper cover, the air tightness testing area is located between the air pressure testing area and the liquid testing area, an air chamber is formed between the air tightness testing area and the air pressure testing area, and a liquid chamber is formed between the air tightness testing area and the liquid testing area. A developing solution is injected into the liquid cavity through the liquid inlet channel, quantitative gas is introduced into the gas cavity through the gas inlet channel, and the gas pressure of the thin film material in a specific gas pressure environment is achieved. Whether the film material leaks gas in the current gas pressure environment or not can be efficiently judged, and meanwhile the gas leakage point position is rapidly determined.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to an airtightness testing device. Background Technology

[0002] Currently, thin film materials are widely used in various industries. Some thin film materials are made of polymers, such as perfluorosulfonic acid resins. These materials possess high proton conductivity, excellent airtightness, and low electronic conductivity, while also needing resistance to strong acid corrosion. However, when thin film materials are applied in specific pressure environments, leakage problems still exist. Therefore, it is necessary to conduct airtightness tests on thin film materials under specific pressure environments to identify and repair leakage points, ensuring that thin film material products do not experience leakage problems under specific pressure environments. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an airtightness testing device to solve the problem that existing thin film material products have not undergone airtightness testing, which leads to the problem of liquid and air leakage when the thin film material products are used in specific air pressure environments.

[0004] To achieve the above and other related objectives, this utility model provides an airtightness testing device for testing thin film materials. The thin film material includes a frame and an airtightness testing area. The airtightness testing device includes:

[0005] The base is equipped with a pressure testing area and an air intake channel connected to the pressure testing area;

[0006] The top cover is provided with a liquid testing area and a liquid inlet channel communicating with the liquid testing area, and the liquid testing area is set in correspondence with the air pressure testing area;

[0007] The frame is used to connect with the base and the top cover. The airtightness test area is located between the air pressure test area and the liquid test area. A gas chamber is formed between the airtightness test area and the air pressure test area, and a liquid chamber is formed between the airtightness test area and the liquid test area.

[0008] Optionally, the base is provided with a first sink in the air pressure test area, and the first sink is connected to the air inlet channel; the top cover is provided with a second sink in the liquid test area, and the second sink is connected to the liquid inlet channel.

[0009] Optionally, the base is provided with a first sealing groove around the first recess, and the upper cover is provided with a second sealing groove around the second recess. The first sealing groove and the second sealing groove are used to provide a sealing component, and the sealing component is pressed and sealed with the frame.

[0010] Optionally, the base includes a lower pressure plate and a lower pad, the lower pad having a first through hole corresponding to the air pressure test area, the air intake channel being disposed on the lower pressure plate, and the air intake channel communicating with the first through hole.

[0011] Optionally, the upper cover includes an upper pressure plate and an upper gasket. The upper gasket has a second through hole corresponding to the liquid test area. The liquid inlet channel is disposed on the upper pressure plate and communicates with the second through hole. The frame is connected to the lower gasket and the upper gasket.

[0012] Optionally, the lower gasket is provided with a first sealing groove and a second sealing groove on both sides along the thickness direction, and the upper gasket is provided with a third sealing groove and a fourth sealing groove on both sides along the thickness direction. The first sealing groove, the second sealing groove, the third sealing groove and the fourth sealing groove are used to install sealing rings. The sealing rings installed in the first sealing groove and the second sealing groove are used to seal the gas chamber; the sealing rings installed in the third sealing groove and the fourth sealing groove are used to seal the liquid chamber.

[0013] Optionally, both the upper gasket and the lower gasket are flexible gaskets, with the upper gasket being pressed and sealed against the upper pressure plate and the frame; the lower gasket is pressed and sealed against the lower pressure plate and the frame.

[0014] Optionally, the frame is a flexible frame, and the frame is squeezed and sealed with the upper gasket and the lower gasket.

[0015] Optionally, the base is provided with a pressure measuring hole and a pressure measuring element. The pressure measuring hole is used to connect the gas chamber to the pressure measuring element, and the pressure measuring element is used to measure the gas pressure in the gas chamber.

[0016] Optionally, the lower pressure plate, the lower gasket, the upper gasket, and the upper pressure plate are respectively provided with through holes for threading screws, and the upper cover is connected to the base by bolts.

[0017] As described above, this utility model has the following beneficial effects: By connecting the thin film material between the base and the top cover, and placing the airtightness test area of ​​the thin film material between the air pressure test area of ​​the base and the liquid test area of ​​the top cover, a gas chamber is formed between the base and the thin film material, and a liquid chamber is formed between the top cover and the thin film material. A developing solution (such as bromothymol blue aqueous solution) is injected into the liquid chamber through the liquid inlet channel on the top cover, filling the liquid chamber. A quantitative gas (such as carbon dioxide) is introduced into the gas chamber through the air inlet channel on the base, and the gas pressure in the gas chamber reaches the gas pressure value of the thin film material under a specific air pressure environment. By observing whether there is discoloration and discoloration points on the surface of the thin film material in the liquid chamber, it is possible to efficiently determine whether there is leakage of the thin film material under the current gas pressure environment, and at the same time quickly determine the leakage point. Attached Figure Description

[0018] Figure 1 The diagram shown is a structural schematic of an airtightness testing device according to an embodiment of this application.

[0019] Figure 2 The diagram shown is an exploded view of the airtightness testing apparatus illustrated in an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures

[0021] Base 1, lower pressure plate 101, air inlet channel 101a, lower gasket 102, first through hole 102a, pressure measuring hole 103, pressure measuring element 104, upper cover 2, upper pressure plate 201, liquid inlet channel 201a, upper gasket 202, second through hole 202a, thin film material 3, frame 301, air tightness test area 302, through hole 4, screw 5, nut 6. Detailed Implementation

[0022] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0023] Please see Figures 1 to 2It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components relevant to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes and to assist those skilled in the art in understanding and reading the content disclosed in the specification. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0024] Before describing the embodiments of this utility model in detail, the application environment of this utility model will be described first. The technology of this utility model is mainly applied to the field of airtightness testing technology. This utility model is used to solve the problem that existing thin film material products have not undergone airtightness testing, which leads to the problem of liquid and air leakage when the thin film material products are used in specific air pressure environments.

[0025] Please combine Figures 1 to 2 As shown, this utility model provides an airtightness testing device.

[0026] In an exemplary embodiment of this application, an airtightness testing device is used to test a thin film material, the thin film material including a frame 301 and an airtightness testing area 302; the airtightness testing device includes: a base 1, which has a pressure testing area and an air inlet channel 101a communicating with the pressure testing area; and an upper cover 2, which has a liquid testing area and a liquid inlet channel 201a communicating with the liquid testing area, the liquid testing area and the pressure testing area being correspondingly arranged; wherein, the frame 301 is used to connect with the base 1 and the upper cover 2, the airtightness testing area is located between the pressure testing area and the liquid testing area, a gas chamber is formed between the airtightness testing area and the pressure testing area, and a liquid chamber is formed between the airtightness testing area and the liquid testing area.

[0027] In this embodiment, by connecting the thin film material 3 between the base 1 and the top cover 2, and placing the airtightness test area of ​​the thin film material 3 between the air pressure test area of ​​the base 1 and the liquid test area of ​​the top cover 2, a gas chamber is formed between the base 1 and the thin film material 3, and a liquid chamber is formed between the top cover 2 and the thin film material 3. A developing solution (such as bromothymol blue aqueous solution) is injected into the liquid chamber through the liquid inlet channel 201a provided on the top cover 2, filling the liquid chamber. A fixed amount of gas (such as carbon dioxide) is introduced into the gas chamber through the air inlet channel 101a provided on the base 1, and the gas pressure in the gas chamber reaches the gas pressure value of the thin film material 3 under a specific gas pressure environment. By observing whether there is discoloration and discoloration points on the surface of the thin film material 3 in the liquid chamber, it is possible to efficiently determine whether there is leakage in the thin film material 3 under the current gas pressure environment, and at the same time, quickly determine the leakage point.

[0028] In an exemplary embodiment of this application, the base 1 is provided with a first sink in the air pressure test area, and the first sink is connected to the air inlet channel 101a; the upper cover 2 is provided with a second sink in the liquid test area, and the second sink is connected to the liquid inlet channel 201a.

[0029] In this embodiment, the groove depth of the first sink is opened along the thickness direction of the base 1, the air intake channel 101a can be opened along the thickness direction of the base 1 or extended along the width direction of the base 1, and the air intake channel 101a is connected to the air source through a gas pipeline; the groove depth of the second sink extends along the thickness direction of the upper cover 2.

[0030] In an exemplary embodiment of this application, the base 1 is provided with a first sealing groove around the first sink groove, and the upper cover 2 is provided with a second sealing groove around the second sink groove. The first sealing groove and the second sealing groove are used to provide sealing components, and the sealing components are squeezed and sealed with the frame 301.

[0031] In this embodiment, by installing sealing components in the first and second sealing grooves, including but not limited to sealing rings, the gas chamber and liquid chamber are sealed by compression between the sealing components and the frame 301, thus preventing gas and liquid leakage or cross-contamination between the gas in the gas chamber and the liquid medium in the liquid chamber. Furthermore, by sealing the gas chamber with the sealing components, the gas chamber can achieve the gas pressure environment required for testing the airtightness of the thin film material 3, ensuring the accuracy of the test.

[0032] In an exemplary embodiment of this application, the base 1 includes a lower pressure plate 101 and a lower pad 102. The lower pad 102 is provided with a first through hole 102a corresponding to the air pressure test area. An air intake channel 101a is disposed on the lower pressure plate 101 and is connected to the first through hole 102a.

[0033] In this embodiment, the lower pressure plate 101 is a flat plate structure. A lower gasket 102 is stacked on the lower pressure plate 101, and a thin film material 3 is stacked on the lower gasket 102. A cavity, i.e. a gas chamber, is formed between the lower pressure plate 101 and the thin film material 3 through the first through hole 102a opened on the lower gasket 102. The first through hole 102a is a square hole.

[0034] In an exemplary embodiment of this application, the upper cover 2 includes an upper pressure plate 201 and an upper gasket 202. The upper gasket 202 is provided with a second through hole 202a corresponding to the liquid test area. The liquid inlet channel 201a is disposed on the upper pressure plate 201 and communicates with the second through hole 202a. The frame 301 is connected to the lower gasket 102 and the upper gasket 202.

[0035] In this embodiment, the upper pressure plate 201 is a flat plate structure. The upper pressure plate 201 is stacked on the upper gasket 202 and the upper gasket 202 is stacked on the upper pressure plate 201. Since the upper gasket 202 has a second through hole 202a, a cavity, i.e. a liquid chamber, is formed between the film material 3 and the upper pressure plate 201. The second through hole 202a is a square hole.

[0036] It is worth noting that the upper pressure plate 201 is a transparent upper pressure plate made of acrylic material. During the test, the liquid chamber can be directly observed through the upper pressure plate 201 to show the color change of the solution and to determine the leakage point of the thin film material 3.

[0037] In an exemplary embodiment of this application, the lower gasket 102 is provided with a first sealing groove and a second sealing groove on both sides along the thickness direction, and the upper gasket 202 is provided with a third sealing groove and a fourth sealing groove on both sides along the thickness direction. The first sealing groove, the second sealing groove, the third sealing groove and the fourth sealing groove are used to install sealing rings. The sealing rings installed in the first sealing groove and the second sealing groove are used to seal the gas chamber; the sealing rings installed in the third sealing groove and the fourth sealing groove are used to seal the liquid chamber.

[0038] In this embodiment, a first sealing groove and a second sealing groove are respectively provided around the first through hole 102a on both sides of the lower gasket 102 along the thickness direction, and a sealing ring (including but not limited to square nitrile rubber or blue polyurethane sealing ring) is installed in the first sealing groove and the second sealing groove to achieve sealing of the gas chamber; a third sealing groove and a fourth sealing groove are respectively provided around the second through hole 202a on both sides of the upper gasket 202 along the thickness direction, and a sealing ring (including but not limited to square polyurethane or rubber sealing ring) is installed in the third sealing groove and the fourth sealing groove to achieve sealing of the liquid chamber.

[0039] In an exemplary embodiment of this application, both the upper gasket 202 and the lower gasket 102 are flexible gaskets. The upper gasket 202 is squeezed and sealed with the upper pressure plate 201 and the frame 301; the lower gasket 102 is squeezed and sealed with the lower pressure plate 101 and the frame 301.

[0040] In this embodiment, the upper gasket 202 and the lower gasket 102 are, but are not limited to, made of flexible graphite material. Flexible graphite material has good corrosion resistance, high / low temperature resistance, good compression resilience, and high strength. Under the pre-tightening force of the connection between the upper pressure plate 201 and the lower pressure plate 101, the upper gasket 202 is deformed by the pressure plate 201 and the frame 301. The deformation of the upper gasket 202 fills the gap between the upper pressure plate 201 and the frame 301, thereby achieving a sealing effect on the liquid chamber. The lower gasket 102 is deformed by the pressure plate 101 and the frame 301. The deformation of the lower gasket 102 fills the gap between the lower pressure plate 101 and the frame 301, thereby achieving a sealing effect on the gas chamber.

[0041] In an exemplary embodiment of this application, the frame 301 is a flexible frame 301, and the frame 301 is squeezed and sealed with the upper gasket 202 and the lower gasket 102.

[0042] In this embodiment, under the pre-tightening force of the connection between the upper pressure plate 201 and the lower pressure plate 101, the frame 301 is deformed by the compression of the upper gasket 202 and the lower gasket 102. The deformation of the frame 301 fills the gap between the upper gasket 202 and the lower gasket 102. Combined with the compression and sealing of the upper gasket 202 and the lower gasket 102, a double sealing effect can be achieved, further ensuring that the gas chamber and the liquid chamber will not leak during the test.

[0043] In an exemplary embodiment of this application, the base 1 is provided with a pressure measuring hole 103 and a pressure measuring element 104. The pressure measuring hole 103 is used to connect the gas chamber with the pressure measuring element 104, and the pressure measuring element 104 is used to measure the gas pressure in the gas chamber.

[0044] In this embodiment, the pressure measuring hole 103 is provided on the lower pressure plate 101 and is connected to the gas chamber. The pressure measuring element 104 is a pressure gauge and is connected to the pressure measuring hole 103. The gas pressure in the gas chamber can be easily read through the pressure measuring element 104 provided on the lower pressure plate 101.

[0045] In an exemplary embodiment of this application, the lower pressure plate 101, the lower gasket 102, the upper gasket 202 and the upper pressure plate 201 are respectively provided with through holes 4, the through holes 4 are used to pass through screws 5, and the upper cover 2 and the base 1 are connected by bolts.

[0046] In this embodiment, the lower pressure plate 101, lower gasket 102, upper gasket 202, and upper pressure plate 201 are all circumferentially distributed with multiple through holes 4. A screw 5 is inserted into the upper pressure plate 201, passes through the through holes 4 of the upper pressure plate 201, upper gasket 202, lower gasket 102, and lower pressure plate 101, and exits from the lower pressure plate 101. The screw 5 is threadedly connected to the nut 6, so that the nut 6 abuts against the lower pressure plate 101, and the hexagonal bolt head of the screw 5 abuts against the upper pressure plate 201, thereby connecting the upper pressure plate 201 and the lower pressure plate 101 and providing pre-tightening force for the compression sealing of the upper gasket 202, the film material 3, and the lower gasket 102. This allows the testing device of this application to achieve the sealing requirements of the gas chamber and the liquid chamber simultaneously through bolt connection.

[0047] Working principle: This application connects the thin film material 3 between the base 1 and the top cover 2, and places the airtightness test area of ​​the thin film material 3 between the air pressure test area of ​​the base 1 and the liquid test area of ​​the top cover 2, so that a gas chamber is formed between the base 1 and the thin film material 3, and a liquid chamber is formed between the top cover 2 and the thin film material 3. A developing solution (such as bromothymol blue aqueous solution) is injected into the liquid chamber through the liquid inlet channel 201a provided on the top cover 2, filling the liquid chamber. A quantitative gas (such as carbon dioxide) is introduced into the gas chamber through the air inlet channel 101a provided on the base 1, and the gas pressure in the gas chamber reaches the gas pressure value of the thin film material 3 under a specific gas pressure environment. By observing whether there is discoloration and discoloration points on the surface of the thin film material 3 in the liquid chamber, it is possible to efficiently determine whether there is leakage in the thin film material 3 under the current gas pressure environment, and at the same time quickly determine the leakage point.

[0048] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A hermetic test device for testing a thin film material, the thin film material comprising a frame and a hermetic test area, characterized in that, The air tightness testing device comprises: a base provided with an air pressure testing area and an air inlet channel in communication with the air pressure testing area; an upper cover provided with a liquid testing area and a liquid inlet channel in communication with the liquid testing area, the liquid testing area being correspondingly arranged with the air pressure testing area; wherein the frame is used to connect the base and the upper cover, the air tightness testing area is located between the air pressure testing area and the liquid testing area, a gas chamber is formed between the air tightness testing area and the air pressure testing area, and a liquid chamber is formed between the air tightness testing area and the liquid testing area; a pressure measuring hole and a pressure measuring element are provided on the base, the pressure measuring hole is used to communicate the gas chamber with the pressure measuring element, and the pressure measuring element is used to measure the gas pressure in the gas chamber.

2. The air tightness testing apparatus of claim 1, wherein: The base is provided with a first sink at the air pressure testing area, the first sink being in communication with the air inlet channel; the upper cover is provided with a second sink at the liquid testing area, the second sink being in communication with the liquid inlet channel.

3. The air tightness testing apparatus of claim 2, wherein: The base is provided with a first sealing groove around the first sink, the upper cover is provided with a second sealing groove around the second sink, and the first sealing groove and the second sealing groove are used to set a sealing part, the sealing part being extruded and sealed with the frame.

4. The air tightness testing apparatus of claim 1, wherein: The base comprises a lower pressing plate and a lower gasket, the lower gasket is provided with a first through hole corresponding to the air pressure testing area, the air inlet channel is arranged on the lower pressing plate, and the air inlet channel is in communication with the first through hole.

5. The air tightness testing apparatus of claim 4, wherein: The upper cover comprises an upper pressing plate and an upper gasket, the upper gasket is provided with a second through hole corresponding to the liquid testing area, the liquid inlet channel is arranged on the upper pressing plate, and the liquid inlet channel is in communication with the second through hole, and the frame is connected with the lower gasket and the upper gasket.

6. The air tightness testing apparatus of claim 5, wherein: The lower gasket is provided with a first sealing groove and a second sealing groove on both sides along the thickness direction, the upper gasket is provided with a third sealing groove and a fourth sealing groove on both sides along the thickness direction, the first sealing groove, the second sealing groove, the third sealing groove and the fourth sealing groove are used to install a sealing ring, the sealing ring installed in the first sealing groove and the second sealing groove is used to seal the gas chamber; the sealing ring installed in the third sealing groove and the fourth sealing groove is used to seal the liquid chamber.

7. The air tightness testing apparatus of claim 5, wherein: The upper gasket and the lower gasket are flexible gaskets, the upper gasket is extruded and sealed with the upper pressing plate and the frame; and the lower gasket is extruded and sealed with the lower pressing plate and the frame.

8. The air tightness testing apparatus of claim 7, wherein: The frame is a flexible frame, and the frame is extruded and sealed with the upper gasket and the lower gasket.

9. The air tightness testing apparatus of claim 8, wherein: The lower pressing plate, the lower gasket, the upper gasket and the upper pressing plate are correspondingly provided with a through hole, the through hole is used to pass a screw rod, and the upper cover is connected with the base through a bolt.

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