Integrated block type test chamber structure and gas permeability tester

Abstract

The application discloses an integrated block type test cavity structure and a gas permeability tester, and belongs to the technical field of gas permeation testing.The humidity generating device is integrated in the second test cavity, so that the internal space of the test equipment can be saved, and the equipment volume is reduced; the humidity generating device is integrated in the second test cavity, and there is no external leakage pipeline, so that the test error caused by condensation of the external leakage pipeline is avoided.

Description

Technical Field

[0001] This invention relates to the field of gas permeability testing technology, and in particular to an integrated block-type test chamber structure and a gas permeability tester. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] When testing the gas permeability of packaging materials, it is often necessary to control the humidity of the test gas and carrier gas to keep them within a high range.

[0004] Currently, commonly used gas permeability testers are equipped with humidity generators for controlling the test gas and carrier gas. However, due to their complex structure, the humidity generators need to be placed separately from the test chamber assembly. A large number of pipelines are often required to connect the humidity controller and the test chamber assembly to transmit the test gas and carrier gas.

[0005] The inventors discovered that the above structure occupies a lot of space, and because the humidity values ​​of the test gas and carrier gas are high, even a small temperature difference during transmission in the pipeline will cause condensation, resulting in changes in the humidity values ​​of the test gas and carrier gas. In severe cases, the pipeline may become filled with liquid and block the pipeline. Changes in the humidity values ​​of the test gas and carrier gas can lead to excessive errors in the test data, and in severe cases, it may make the test impossible. Most of the pipelines for the test gas and carrier gas are exposed outside the test chamber, occupying a lot of space and being easily affected by the external environment. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an integrated block-type test chamber structure and a gas permeability tester, which can save internal space of the test equipment, reduce the size of the equipment, and avoid test data errors caused by pipeline condensation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The first aspect of the present invention provides an integrated block-type test cavity structure.

[0009] An integrated block-type test chamber structure includes: a first test chamber and a second test chamber, the first test chamber having a first groove with a first opening, and the second test chamber having a second groove with a second opening, the space between the first opening and the second opening being used to place a sample.

[0010] The first test chamber has a first test gas inlet channel and a first test gas exhaust channel that are connected to the first groove. The second test chamber has a carrier gas inlet channel, a carrier gas exhaust channel and a second test gas inlet channel. The first test gas inlet channel is connected to the second test gas inlet channel, and both the carrier gas inlet channel and the carrier gas exhaust channel are connected to the second groove.

[0011] The second test chamber has a test gas moisture inlet channel and a test gas moisture channel. A test gas humidity generator is also embedded in the second test chamber. The test gas moisture inlet channel is connected to the test gas humidity generator, the test gas humidity generator is connected to the test gas moisture channel, and the test gas moisture channel is connected to the second test gas inlet channel.

[0012] The side of the second test chamber is provided with a humidity sensor seat with a gas passage. The gas passage is provided with a first humidity sensor and is connected to the second test gas inlet channel.

[0013] As a further limitation of the first aspect of the invention, the outlet port of the carrier gas exhaust channel is used to communicate with a gas sensor.

[0014] As a further limitation of the first aspect of the present invention, a second test gas exhaust channel is provided in the second test chamber, and the first test gas exhaust channel is connected to the second test gas exhaust channel.

[0015] As a further limitation of the first aspect of the present invention, the outlet port of the first test gas exhaust channel is located on the side wall of the first test chamber.

[0016] As a further limitation of the first aspect of the present invention, the second test chamber has a first water filling channel that is connected to the test gas humidity generator.

[0017] As a further limitation of the first aspect of the present invention, the first test chamber is provided with a first sealing element for sealing with the sample, the communication position between the first test gas inlet channel and the second test gas inlet channel is provided with a second sealing element, and the communication position between the first test gas exhaust channel and the second test gas exhaust channel is provided with a third sealing element.

[0018] As a further limitation of the first aspect of the present invention, it also includes a first flow regulating valve, which is located at the connection position between the test gas moisture channel and the second test gas inlet channel.

[0019] The second test gas inlet channel includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the first flow regulating valve, and the second port of the first branch channel is located on the side wall of the second test chamber and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat.

[0020] The first port of the second branch channel is located on the side wall of the second test chamber and is sealed and connected to the gas outlet port of the humidity sensor seat. The second port of the second branch channel is sealed and connected to the first test gas inlet channel.

[0021] A second aspect of the present invention provides an integrated block-type test cavity structure.

[0022] An integrated block-type test chamber structure includes: a first test chamber and a second test chamber, the first test chamber having a first groove with a first opening, and the second test chamber having a second groove with a second opening, the space between the first opening and the second opening being used to place a sample.

[0023] The first test chamber has a first test gas inlet channel and a first test gas exhaust channel that are connected to the first groove. The second test chamber has a carrier gas inlet channel, a carrier gas exhaust channel and a second test gas inlet channel. The first test gas inlet channel is connected to the second test gas inlet channel, and both the carrier gas inlet channel and the carrier gas exhaust channel are connected to the second groove.

[0024] The second test chamber has a dry gas channel, a wet gas inlet channel, and a wet gas channel. A test gas humidity generator is also embedded in the second test chamber. The wet gas inlet channel is connected to the test gas humidity generator, the test gas humidity generator is connected to the test gas humidity channel, and the test gas humidity channel is connected to the second flow regulating valve.

[0025] The outlet port of the dry gas channel and the outlet port of the second flow regulating valve are respectively connected to the inlet channel of the second test gas.

[0026] The side of the second test chamber is provided with a humidity sensor seat with a gas passage. The gas passage is provided with a first humidity sensor and is connected to the second test gas inlet channel.

[0027] As a further limitation of the second aspect of the invention, the outlet port of the carrier gas exhaust channel is used to communicate with a gas sensor.

[0028] As a further limitation of the second aspect of the present invention, a second test gas exhaust channel is provided in the second test chamber, and the first test gas exhaust channel is connected to the second test gas exhaust channel.

[0029] As a further limitation of the second aspect of the present invention, the outlet port of the first test gas exhaust channel is located on the side wall of the first test chamber.

[0030] As a further limitation of the second aspect of the present invention, the second test chamber has a first water filling channel that is connected to the test gas humidity generator.

[0031] As a further limitation of the second aspect of the present invention, the first test chamber is provided with a first sealing element for sealing with the sample, the communication position between the first test gas inlet channel and the second test gas inlet channel is provided with a second sealing element, and the communication position between the first test gas exhaust channel and the second test gas exhaust channel is provided with a third sealing element.

[0032] As a further limitation of the second aspect of the present invention, it also includes a test gas dry gas inlet channel, the outlet end of which is connected to a third flow regulating valve, and the third flow regulating valve is connected to the test gas dry gas channel.

[0033] As a further limitation of the second aspect of the present invention, the second test gas inlet channel includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the second flow regulating valve, and the second port of the first branch channel is located on the side wall of the second test chamber and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat.

[0034] The first port of the second branch channel is located on the side wall of the second test chamber and is sealed and connected to the gas outlet port of the humidity sensor seat. The second port of the second branch channel is sealed and connected to the first test gas inlet channel.

[0035] A third aspect of the present invention provides an integrated block-type test cavity structure.

[0036] An integrated block-type test chamber structure includes: a first test chamber and a second test chamber, the first test chamber having a first groove with a first opening, and the second test chamber having a second groove with a second opening, the space between the first opening and the second opening being used to place a sample.

[0037] The first test chamber has a first test gas inlet channel and a first test gas exhaust channel that are connected to the first groove. The second test chamber has a carrier gas inlet channel, a carrier gas moisture channel, a carrier gas exhaust channel, and a second test gas inlet channel.

[0038] The first test gas inlet channel is connected to the second test gas inlet channel, and the carrier gas moisture channel and the carrier gas exhaust channel are both connected to the second groove.

[0039] The carrier gas inlet channel is connected to the inlet end of the carrier gas humidity generator embedded in the second test chamber. The outlet end of the carrier gas humidity generator is connected to the carrier gas moisture channel through the fourth flow regulating valve. A second humidity sensor is provided in the carrier gas moisture channel.

[0040] The second test chamber has a test gas moisture inlet channel and a test gas moisture channel. A test gas humidity generator is also embedded in the second test chamber. The test gas moisture inlet channel is connected to the test gas humidity generator, the test gas humidity generator is connected to the test gas moisture channel, and the test gas moisture channel is connected to the second test gas inlet channel.

[0041] The side of the second test chamber is provided with a humidity sensor seat with a gas passage. The gas passage is provided with a first humidity sensor and is connected to the second test gas inlet channel.

[0042] As a further limitation of the third aspect of the invention, the outlet port of the carrier gas exhaust channel is used to communicate with a gas sensor.

[0043] As a further limitation of the third aspect of the present invention, a second test gas exhaust channel is provided in the second test chamber, and the first test gas exhaust channel is connected to the second test gas exhaust channel.

[0044] As a further limitation of the third aspect of the present invention, the outlet port of the first test gas exhaust channel is located on the side wall of the first test chamber.

[0045] As a further limitation of the third aspect of the present invention, the second test chamber has a first water filling channel that is connected to the test gas humidity generator.

[0046] As a further limitation of the third aspect of the present invention, the second test chamber has a second water filling channel that is connected to the carrier gas humidity generator.

[0047] As a further limitation of the third aspect of the present invention, the first test chamber is provided with a first sealing element for sealing with the sample, the communication position between the first test gas inlet channel and the second test gas inlet channel is provided with a second sealing element, and the communication position between the first test gas exhaust channel and the second test gas exhaust channel is provided with a third sealing element.

[0048] As a further limitation of the third aspect of the present invention, it also includes a first flow regulating valve, which is located at the connection position between the test gas moisture channel and the second test gas inlet channel.

[0049] The second test gas inlet channel includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the first flow regulating valve, and the second port of the first branch channel is located on the side wall of the second test chamber and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat.

[0050] The first port of the second branch channel is located on the side wall of the second test chamber and is sealed and connected to the gas outlet port of the humidity sensor seat. The second port of the second branch channel is sealed and connected to the first test gas inlet channel.

[0051] The fourth aspect of the present invention provides a gas permeability tester, including the integrated block test chamber structure described in the first, second or third aspect of the present invention.

[0052] Compared with the prior art, the beneficial effects of the present invention are:

[0053] 1. This invention innovatively proposes an integrated block-type test chamber structure and a gas permeability tester, which integrates the humidity generating device into the second test chamber, thereby saving internal space of the test equipment and reducing the size of the equipment.

[0054] 2. This invention innovatively proposes an integrated block-type test chamber structure and a gas permeability tester, which integrates the humidity generating device into the second test chamber, eliminating the need for external pipelines and avoiding test errors caused by condensation from external pipelines.

[0055] 3. This invention innovatively proposes an integrated block-type test chamber structure and a gas permeability tester. Each test gas inlet pipe, test gas outlet pipe, carrier gas inlet pipe, and carrier gas outlet pipe are arranged in the first test chamber and the second test chamber, which improves the airtightness and integration, reduces the influence of the external environment, and further avoids test errors.

[0056] 4. This invention innovatively proposes an integrated block-type test chamber structure and a gas permeability tester. The first humidity sensor is located within the gas passage of the humidity sensor holder. seat Located on the side of the second test chamber, it can ensure effective humidity testing and facilitate the disassembly and replacement of the first humidity sensor.

[0057] 5. This invention innovatively proposes an integrated block-type test chamber structure and a gas permeability tester. In one implementation, all external pipelines are set on the second test chamber, and the first test chamber does not need to be connected to external pipelines, which facilitates the removal of the first test chamber and the assembly and disassembly of the sample during the test. Attached Figure Description

[0058] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0059] Figure 1 This is a schematic diagram of the integrated block-type test cavity structure provided in Embodiment 1 of the present invention;

[0060] Figure 2 This is a schematic diagram of the integrated block-type test cavity structure provided in Embodiment 2 of the present invention;

[0061] Figure 3 This is a schematic diagram of the integrated block-type test cavity structure provided in Embodiment 3 of the present invention;

[0062] Figure 4 This is a schematic diagram of the structure of the humidity sensor holder provided in Embodiments 1, 2 and 3 of the present invention;

[0063] The components are as follows: 1. Second test chamber; 2. First test chamber; 3. Sample; 4. Second test gas exhaust channel; 5. Carrier gas exhaust channel; 6. Carrier gas inlet channel; 7. Test gas moisture inlet channel; 8. Test gas humidity generator; 9. First water inlet channel; 10. First flow regulating valve; 11. Test gas moisture channel; 12. Third sealing element; 13. First sealing element; 14. First test gas exhaust channel; 15. First test gas inlet channel; 16. Test gas dry inlet channel; 17. Third flow regulating valve; 18. Second flow regulating valve; 19. Test gas dry channel; 20. Fourth flow regulating valve; 21. Carrier gas humidity generator; 22. Carrier gas moisture channel; 23. Second water inlet channel; 24. First humidity sensor; 25. Second humidity sensor; 26. Second test gas inlet channel; 27. Second sealing element; 28. Fourth seal; 29. ​​Fifth seal; 30. Humidity sensor holder. Detailed Implementation

[0064] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0065] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0066] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0067] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0068] Example 1:

[0069] like Figure 1 As shown, Embodiment 1 of the present invention provides an integrated block-type test cavity structure, including: a first test cavity 2 and a second test cavity 1. The first test cavity 2 has a first groove with a first opening, and the second test cavity 1 has a second groove with a second opening. The space between the first opening and the second opening is used to place a sample 3.

[0070] The first test chamber 2 has a first test gas inlet channel 15 and a first test gas exhaust channel 14 that are connected to the first groove. The second test chamber 1 has a carrier gas inlet channel 6, a carrier gas exhaust channel 5, a second test gas exhaust channel 4, and a second test gas inlet channel 26. The first test gas inlet channel 15 is connected to the second test gas inlet channel 26, the first test gas exhaust channel 14 is connected to the second test gas exhaust channel 4, and both the carrier gas inlet channel 6 and the carrier gas exhaust channel 5 are connected to the second groove.

[0071] The second test chamber 1 has a test gas moisture inlet channel 7 and a test gas moisture channel 11. The second test chamber 1 also has a test gas humidity generator 8 and a first flow regulating valve 10 embedded in it. The test gas moisture inlet channel 7 is connected to the test gas humidity generator 8, the test gas humidity generator 8 is connected to the test gas moisture channel 11, the test gas moisture channel 11 is connected to the second test gas inlet channel, and the first flow regulating valve 10 is located at the connection position between the test gas moisture channel 11 and the second test gas inlet channel.

[0072] The second test chamber 1 has a first water filling channel 9 connected to the test gas humidity generator 8. The side of the second test chamber is provided with a humidity sensor seat 30 with a gas passage. A first humidity sensor 24 is provided in the gas passage. The gas passage is connected to the second test gas inlet channel (the first humidity sensor 24 is used to detect the humidity in the second test gas inlet channel 26). The outlet port of the carrier gas exhaust channel 5 is used to connect with the gas sensor.

[0073] The second test gas inlet channel 26 includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the first flow regulating valve 10. The second port of the first branch channel is located on the side wall of the second test chamber 1 and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat 30 through the fifth sealing member 29.

[0074] The first port of the second branch channel is located on the side wall of the second test chamber 1 and is sealed and connected to the gas outlet port of the humidity sensor seat 30 through the fourth seal 28. The second port of the second branch channel is connected to the first test gas inlet channel.

[0075] In this embodiment, the first test chamber 2 is provided with a first sealing element 13 for sealing with the sample 3. The first sealing element 13 can be a rubber O-ring, a rubber flat washer, a silicone sealing ring, or other sealing components. Those skilled in the art can select according to the specific working conditions, which will not be elaborated here.

[0076] In this embodiment, the mounting groove of the first sealing element 13 is located on the first test cavity.

[0077] In this embodiment, a second sealing element 27 is provided at the connection position between the first test gas inlet channel 15 and the second test gas inlet channel 26, and a third sealing element 12 is provided at the connection position between the first test gas exhaust channel 14 and the second test gas exhaust channel 4. Both the second sealing element 27 and the third sealing element 12 can be rubber O-rings, rubber flat washers, silicone seals, etc., which are used for sealing. Those skilled in the art can select according to specific working conditions, and will not be elaborated here.

[0078] In this embodiment, the mounting groove of the third sealing element 12 can be located on the first test chamber 2 or on the second test chamber 1. Those skilled in the art can choose according to the specific working conditions, which will not be elaborated here.

[0079] More specifically, in this embodiment, the test gas humidity generator 8 is located inside the second test chamber (lower test chamber), which is a cylindrical, cuboid, cube, or other shape space capable of holding enough water;

[0080] One end of the first water filling channel 9 is connected to the bottom of the test gas humidity generator 8, and the other opening of the first water filling channel 9 is located on the side of the second test chamber 1. Connectors, check valves and other components can be installed on this opening.

[0081] In this embodiment, the fourth sealing element 28 and the fifth sealing element 29 can both be rubber O-rings, rubber flat washers, silicone seals, etc., which are used for sealing. Those skilled in the art can select them according to specific working conditions, and will not be elaborated here.

[0082] One end of the test gas moisture inlet channel 7 is located at the top of the test gas humidity generator 8, near the very top. The other end of the test gas moisture inlet channel 7 is located on the side of the second test chamber 1. Connectors and other components can be installed on this opening to connect with pressure regulating valves, proportional valves, and other pressure control elements.

[0083] In this embodiment, one end of the test gas humidity channel 11 is connected to the top of the test gas humidity generator 8, and the other end is connected to the input end of the first flow regulating valve 10.

[0084] The output end of the first flow regulating valve 10 is connected to the second test gas inlet channel 26. The first flow regulating valve 10 can be a manual flow regulating valve, an automatic flow regulating valve, a mass flow controller, or other components used to regulate the gas flow. Those skilled in the art can select according to the specific working conditions, which will not be elaborated here.

[0085] It is understandable that in some other implementations, it is not necessary to open the second test gas exhaust channel 4 in the second test chamber 1. The exhaust port of the first test gas exhaust channel 14 can be directly opened on the side wall of the first test chamber 2. Those skilled in the art can choose according to the specific working conditions, which will not be elaborated here.

[0086] The specific working principle includes:

[0087] Test gas adjusted to a certain pressure enters the test gas humidity generator 8 from the test gas humidity inlet channel 7. Test gas with a certain pressure and high humidity enters the test gas humidity channel 11 from the test gas humidity generator 8. After being throttled by the first flow regulating valve 10, it enters the second test gas inlet channel 26. The pressure of the test gas with a certain pressure and high humidity will decrease as the first flow regulating valve 10 is adjusted, and the humidity will also decrease to a certain value.

[0088] The first humidity sensor 24 detects the humidity of the test gas in the second test gas inlet channel 26. By continuously adjusting the pressure of the test gas, the humidity value detected by the first humidity sensor 24 is changed to achieve the required humidity value.

[0089] A test gas with a certain humidity enters the first test gas inlet channel 15 through the second test gas inlet channel 26, and then enters the first groove of the first test chamber 2 through the first test gas inlet channel 15. Part of the test gas with a certain humidity permeates into the second groove of the second test chamber 1 through the sample 3. The remaining test gas with a certain humidity enters the second test gas exhaust channel 4 through the first test gas exhaust channel 14 and is discharged.

[0090] The carrier gas enters the second groove of the second test chamber 1 through the carrier gas inlet channel 6 and mixes with the test gas with a certain humidity that has permeated in to form a mixed gas. The mixed gas enters the gas sensor through the carrier gas exhaust channel 5, and the gas sensor detects the mixed gas.

[0091] Example 2:

[0092] like Figure 2As shown, Embodiment 2 of the present invention provides an integrated block-type test cavity structure, including: a first test cavity 2 and a second test cavity 1. The first test cavity 2 has a first groove with a first opening, and the second test cavity 1 has a second groove with a second opening. The space between the first opening and the second opening is used to place a sample 3.

[0093] The first test chamber 2 has a first test gas inlet channel 15 and a first test gas exhaust channel 14 that are connected to the first groove. The second test chamber 1 has a carrier gas inlet channel 6, a carrier gas exhaust channel 5, a second test gas exhaust channel 4, and a second test gas inlet channel 26. The first test gas inlet channel 15 is connected to the second test gas inlet channel 26, the first test gas exhaust channel 14 is connected to the second test gas exhaust channel 4, and both the carrier gas inlet channel 6 and the carrier gas exhaust channel 5 are connected to the second groove.

[0094] The second test chamber 1 has a test gas dry gas inlet channel 16, a test gas dry gas channel 19, a test gas wet gas inlet channel 7, and a test gas wet gas channel 11. The second test chamber 1 also has a test gas humidity generator 8 embedded in it. The test gas wet gas inlet channel 7 is connected to the test gas humidity generator 8, the test gas humidity generator 8 is connected to the test gas wet gas channel 11, and the test gas wet gas channel 11 is connected to the second flow regulating valve 18 (used to control the opening and closing of the test gas wet gas channel 11).

[0095] The outlet end of the test gas dry gas inlet channel 16 is connected to the third flow regulating valve 17 (the third flow regulating valve 17 is used to control the opening and closing of the test gas dry gas inlet channel), the third flow regulating valve 17 is connected to the test gas dry gas channel 19, and the outlet port of the test gas dry gas channel 19 and the outlet port of the second flow regulating valve 18 are respectively connected to the second test gas inlet channel 26.

[0096] The second test chamber 1 has a first water filling channel 9 that is connected to the test gas humidity generator 8. The side of the second test chamber 1 is provided with a humidity sensor seat 30 with a gas passage. The gas passage is provided with a first humidity sensor 24. The gas passage is connected to the second test gas inlet channel. The outlet port of the carrier gas exhaust channel 5 is used to connect with the gas sensor.

[0097] The second test gas inlet channel 26 includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the second flow regulating valve 18. The second port of the first branch channel is located on the side wall of the second test chamber 1 and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat 30 through the fifth sealing member 29.

[0098] The first port of the second branch channel is located on the side wall of the second test chamber 1 and is sealed and connected to the gas outlet port of the humidity sensor seat 30 through the fourth seal 28. The second port of the second branch channel is connected to the first test gas inlet channel.

[0099] In this embodiment, the first test chamber 2 is provided with a first sealing element 13 for sealing with the sample 3. The first sealing element 13 can be a rubber O-ring, a rubber flat washer, a silicone sealing ring, or other sealing components. Those skilled in the art can select according to the specific working conditions, which will not be elaborated here.

[0100] In this embodiment, the mounting groove of the first sealing element 13 is located on the first test cavity.

[0101] In this embodiment, a second sealing element 27 is provided at the connection position between the first test gas inlet channel 15 and the second test gas inlet channel 26, and a third sealing element 12 is provided at the connection position between the first test gas exhaust channel 14 and the second test gas exhaust channel 4.

[0102] Both the second sealing element 27 and the third sealing element 12 can be rubber O-rings, rubber flat washers, silicone seals, or other sealing components. Those skilled in the art can select them according to specific working conditions, which will not be elaborated here.

[0103] In this embodiment, the mounting groove of the third sealing element 12 can be located on the first test chamber 2 or on the second test chamber 1. Those skilled in the art can choose according to the specific working conditions, which will not be elaborated here.

[0104] More specifically, in this embodiment, the test gas humidity generator 8 is located inside the second test chamber (lower test chamber), which is a cylindrical, cuboid, cube, or other shape space capable of holding enough water;

[0105] One end of the first water filling channel 9 is connected to the bottom of the test gas humidity generator 8. The other opening of the first water filling channel is located on the side of the second test chamber 1, where components such as connectors and check valves can be installed.

[0106] One end of the test gas moisture inlet channel 7 is located at the top of the test gas humidity generator 8, near the very top. The other end of the test gas moisture inlet channel 7 is located on the side of the second test chamber 1. Connectors and other components can be installed on this opening to connect with pressure regulating valves, proportional valves, and other pressure control elements.

[0107] In this embodiment, one end of the test gas humidity channel 11 is connected to the top of the test gas humidity generator 8, and the other end is connected to the input end of the second flow regulating valve 18.

[0108] In this embodiment, the fourth sealing element 28 and the fifth sealing element 29 can both be rubber O-rings, rubber flat washers, silicone seals, etc., which are used for sealing. Those skilled in the art can select them according to specific working conditions, and will not be elaborated here.

[0109] It is understandable that in some other implementations, it is not necessary to open the second test gas exhaust channel 4 in the second test chamber 1. The exhaust port of the first test gas exhaust channel 14 can be directly opened on the side wall of the first test chamber 2. Those skilled in the art can choose according to the specific working conditions, which will not be elaborated here.

[0110] The specific working principle includes:

[0111] A portion of the test gas enters the test gas humidity generator 8 from the test gas humidity inlet channel 7, and the test gas with higher humidity enters the test gas humidity channel 11 from the test gas humidity generator 8. Under the regulation of the second flow regulating valve 18, a certain flow rate of test gas with higher humidity enters the second test gas inlet channel 26.

[0112] Another portion of the dry test gas enters through the dry test gas inlet channel 16. Under the regulation of the third flow regulating valve 17, a certain flow rate of dry test gas enters the second test gas inlet channel 26 through the dry test gas channel 19 and mixes with a certain flow rate of test gas with higher humidity to achieve a certain flow rate of test gas with a certain humidity.

[0113] By changing the flow rates of the third flow regulating valve 17 and the second flow regulating valve 18, the humidity of the mixed test gas can be adjusted.

[0114] The first humidity sensor 24 detects the humidity of the test gas in the second test gas inlet channel 26. Test gas with a certain humidity enters the first test gas inlet channel 15 from the second test gas inlet channel 26, and then enters the first groove of the first test chamber 2 through the first test gas inlet channel 15. Part of the test gas with a certain humidity permeates into the second groove of the second test chamber 1 through the sample 3. The remaining test gas with a certain humidity enters the second test gas exhaust channel 4 through the first test gas exhaust channel 14 and is discharged.

[0115] The carrier gas enters the second groove of the second test chamber 1 through the carrier gas inlet channel 6 and mixes with the test gas with a certain humidity that has permeated in to form a mixed gas. The mixed gas enters the gas sensor through the carrier gas exhaust channel 5, and the gas sensor detects the mixed gas.

[0116] Example 3:

[0117] like Figure 3 As shown, Embodiment 3 of the present invention provides an integrated block-type test cavity structure, including: a first test cavity 2 and a second test cavity 1. The first test cavity 2 has a first groove with a first opening, and the second test cavity 1 has a second groove with a second opening. The space between the first opening and the second opening is used to place a sample 3.

[0118] The first test chamber 2 has a first test gas inlet channel 15 and a first test gas exhaust channel 14 that are connected to the first groove. The second test chamber 1 has a carrier gas inlet channel 6, a carrier gas moisture channel 22, a carrier gas exhaust channel 5, a second test gas exhaust channel 4, and a second test gas inlet channel 26.

[0119] The first test gas inlet channel 15 is connected to the second test gas inlet channel 26, the first test gas exhaust channel 14 is connected to the second test gas exhaust channel 4, and the carrier gas moisture channel 22 and the carrier gas exhaust channel 5 are both connected to the second groove.

[0120] The carrier gas inlet channel 6 is connected to the inlet end of the carrier gas humidity generator 21 embedded in the second test chamber 1. The outlet end of the carrier gas humidity generator 21 is connected to the carrier gas moisture channel 22 through the fourth flow regulating valve 20. The carrier gas moisture channel 22 is equipped with a second humidity sensor 25.

[0121] The second test chamber 1 has a test gas moisture inlet channel 7 and a test gas moisture channel 11. The second test chamber 1 also has a test gas humidity generator 8 and a first flow regulating valve 10 embedded in it. The test gas moisture inlet channel 7 is connected to the test gas humidity generator 8, the test gas humidity generator 8 is connected to the test gas moisture channel 11, and the test gas moisture channel 11 is connected to the second test gas inlet channel.

[0122] The second test chamber 1 has a first water filling channel 9 that is connected to the test gas humidity generator 8. The side of the second test chamber 1 is provided with a humidity sensor seat 30 with a gas passage. The gas passage is provided with a first humidity sensor 24. The gas passage is connected to the second test gas inlet channel. The outlet port of the carrier gas exhaust channel 5 is used to connect with the gas sensor.

[0123] The second test chamber 1 has a second water supply channel 23 connected to the carrier gas humidity generator 21, and a second humidity sensor 25 is provided on the carrier gas humidity channel 22.

[0124] The second test gas inlet channel 26 includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the first flow regulating valve 10. The second port of the first branch channel is located on the side wall of the second test chamber 1 and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat 30 through the fifth sealing member 29.

[0125] The first port of the second branch channel is located on the side wall of the second test chamber 1 and is sealed and connected to the gas outlet port of the humidity sensor seat 30 through the fourth seal 28. The second port of the second branch channel is connected to the first test gas inlet channel.

[0126] In this embodiment, the first test chamber 2 is provided with a first sealing element 13 for sealing with the sample 3. The first sealing element 13 can be a rubber O-ring, a rubber flat washer, a silicone sealing ring, or other sealing components. Those skilled in the art can select according to the specific working conditions, which will not be elaborated here.

[0127] In this embodiment, the mounting groove of the first sealing element 13 is located on the first test cavity.

[0128] In this embodiment, a second sealing element 27 is provided at the connection position between the first test gas inlet channel 15 and the second test gas inlet channel 26, and a third sealing element 12 is provided at the connection position between the first test gas exhaust channel 14 and the second test gas exhaust channel 4.

[0129] Both the second sealing element 27 and the third sealing element 12 can be rubber O-rings, rubber flat washers, silicone seals, or other sealing components. Those skilled in the art can select them according to specific working conditions, which will not be elaborated here.

[0130] In this embodiment, the mounting groove of the third sealing element 12 can be located on the first test chamber 2 or on the second test chamber 1. Those skilled in the art can choose according to the specific working conditions, which will not be elaborated here.

[0131] More specifically, one end of the carrier gas inlet channel 6 is located on the side of the second test chamber 1, and the other end is located near the top of the carrier gas humidity generator 21.

[0132] The carrier gas humidity generator 21 is located inside the second test chamber 1 and is a cylindrical, cuboid, cube, or other shape space that can hold enough water.

[0133] One end of the second water supply channel 23 is located at the bottom of the carrier gas humidity generator 21, and the other end of the second water supply channel is located on the side of the second test chamber 1. Connectors, check valves and other components can be installed on this opening.

[0134] The output end of the fourth flow regulating valve 20 is connected to the carrier gas moisture channel 22, and the input end of the fourth flow regulating valve 20 is connected to the top surface of the carrier gas humidity generator 21 through a pipeline. The fourth flow regulating valve 20 can be a manual flow regulating valve, an automatic flow regulating valve, a mass flow controller, or other components used to regulate the gas flow.

[0135] One end of the carrier gas moisture channel 22 is connected to the output end of the fourth flow regulating valve 20, and the other end is connected to the second groove of the second test chamber 1. The second humidity sensor 25 is installed in the carrier gas moisture channel 22 to test the humidity of the gas in the carrier gas moisture channel 22.

[0136] In this embodiment, the fourth sealing element 28 and the fifth sealing element 29 can both be rubber O-rings, rubber flat washers, silicone seals, etc., which are used for sealing. Those skilled in the art can select them according to specific working conditions, and will not be elaborated here.

[0137] It is understandable that in some other implementations, it is not necessary to open the second test gas exhaust channel 4 in the second test chamber 1. The exhaust port of the first test gas exhaust channel 14 can be directly opened on the side wall of the first test chamber 2. Those skilled in the art can choose according to the specific working conditions, which will not be elaborated here.

[0138] The specific working principle includes:

[0139] A portion of the test gas enters the test gas humidity generator 8 from the test gas humidity inlet channel 7, and the test gas with higher humidity enters the test gas humidity channel 11 from the test gas humidity generator 8. Under the regulation of the first flow regulating valve 10, a certain flow rate of test gas with higher humidity enters the second test gas inlet channel 26.

[0140] The first humidity sensor 24 detects the humidity of the test gas in the second test gas inlet channel 26. Test gas with a certain humidity enters the first test gas inlet channel 15 from the second test gas inlet channel 26, and then enters the first groove of the first test chamber 2 through the first test gas inlet channel 15. Part of the test gas with a certain humidity permeates into the second groove of the second test chamber 1 through the sample 3. The remaining test gas with a certain humidity enters the second test gas exhaust channel 4 through the first test gas exhaust channel 14 and is discharged.

[0141] The carrier gas enters the second groove of the second test chamber 1 through the carrier gas inlet channel 6, the carrier gas humidity generator 21, and the carrier gas moisture channel 22 (the pressure is regulated by the fourth flow regulating valve 20). It mixes with the test gas with a certain humidity that has permeated in to form a mixed gas. The mixed gas enters the gas sensor through the carrier gas exhaust channel 5, and the gas sensor detects the mixed gas.

[0142] Example 4:

[0143] Embodiment 4 of the present invention provides a gas permeability tester, including the integrated block test chamber structure described in Embodiments 1, 2 or 3 of the present invention.

[0144] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated block-type test cavity structure, characterized in that, include: The first test chamber and the second test chamber are provided. The first test chamber has a first groove with a first opening and the second test chamber has a second groove with a second opening. The space between the first opening and the second opening is used to place the sample. The first test chamber has a first test gas inlet channel and a first test gas exhaust channel that are connected to the first groove. The second test chamber has a carrier gas inlet channel, a carrier gas exhaust channel and a second test gas inlet channel. The first test gas inlet channel is connected to the second test gas inlet channel. The carrier gas inlet channel and the carrier gas exhaust channel are both connected to the second groove. The exhaust port of the carrier gas exhaust channel is used to connect to the gas sensor. The second test chamber has a test gas moisture inlet channel and a test gas moisture channel. A test gas humidity generator is also embedded in the second test chamber. The test gas moisture inlet channel is connected to the test gas humidity generator, the test gas humidity generator is connected to the test gas moisture channel, and the test gas moisture channel is connected to the second test gas inlet channel. The side of the second test chamber is provided with a humidity sensor seat with a gas passage. A first humidity sensor is installed in the gas passage, and the gas passage is connected to the second test gas inlet channel. It also includes a first flow regulating valve, which is located at the connection between the test gas moisture channel and the second test gas inlet channel; The second test gas inlet channel includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the first flow regulating valve, and the second port of the first branch channel is located on the side wall of the second test chamber and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat. The first port of the second branch channel is located on the side wall of the second test chamber and is sealed and connected to the gas outlet port of the humidity sensor seat. The second port of the second branch channel is sealed and connected to the first test gas inlet channel.

2. The integrated block-type test cavity structure as described in claim 1, characterized in that, The second test chamber has a second test gas exhaust channel, and the first test gas exhaust channel is connected to the second test gas exhaust channel.

3. The integrated block-type test cavity structure as described in claim 1, characterized in that, The exhaust port of the first test gas exhaust channel is located on the side wall of the first test chamber.

4. The integrated block-type test cavity structure as described in claim 1, characterized in that, The second test chamber has a first water filling channel that is connected to the test gas humidity generator.

5. The integrated block-type test cavity structure as described in claim 1, characterized in that, The first test chamber is provided with a first sealing element for sealing with the sample, a second sealing element is provided at the connection position between the first test gas inlet channel and the second test gas inlet channel, and a third sealing element is provided at the connection position between the first test gas exhaust channel and the second test gas exhaust channel.

6. An integrated block-type test cavity structure, characterized in that, include: The first test chamber and the second test chamber are provided. The first test chamber has a first groove with a first opening and the second test chamber has a second groove with a second opening. The space between the first opening and the second opening is used to place the sample. The first test chamber has a first test gas inlet channel and a first test gas exhaust channel that are connected to the first groove. The second test chamber has a carrier gas inlet channel, a carrier gas exhaust channel and a second test gas inlet channel. The first test gas inlet channel is connected to the second test gas inlet channel. The carrier gas inlet channel and the carrier gas exhaust channel are both connected to the second groove. The exhaust port of the carrier gas exhaust channel is used to connect to the gas sensor. The second test chamber has a dry gas channel, a wet gas inlet channel, and a wet gas channel. A test gas humidity generator is also embedded in the second test chamber. The wet gas inlet channel is connected to the test gas humidity generator, the test gas humidity generator is connected to the test gas humidity channel, and the test gas humidity channel is connected to the second flow regulating valve. The outlet port of the dry gas channel and the outlet port of the second flow regulating valve are respectively connected to the inlet channel of the second test gas. The side of the second test chamber is provided with a humidity sensor seat with a gas passage. A first humidity sensor is installed in the gas passage, and the gas passage is connected to the second test gas inlet channel. The second test gas inlet channel includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the second flow regulating valve, and the second port of the first branch channel is located on the side wall of the second test chamber and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat. The first port of the second branch channel is located on the side wall of the second test chamber and is sealed and connected to the gas outlet port of the humidity sensor seat. The second port of the second branch channel is sealed and connected to the first test gas inlet channel.

7. The integrated block-type test cavity structure as described in claim 6, characterized in that, The second test chamber has a second test gas exhaust channel, and the first test gas exhaust channel is connected to the second test gas exhaust channel.

8. The integrated block-type test cavity structure as described in claim 6, characterized in that, The exhaust port of the first test gas exhaust channel is located on the side wall of the first test chamber.

9. The integrated block-type test cavity structure as described in claim 6, characterized in that, The second test chamber has a first water filling channel that is connected to the test gas humidity generator.

10. The integrated block-type test cavity structure as described in claim 6, characterized in that, The first test chamber is provided with a first sealing element for sealing with the sample, a second sealing element is provided at the connection position between the first test gas inlet channel and the second test gas inlet channel, and a third sealing element is provided at the connection position between the first test gas exhaust channel and the second test gas exhaust channel.

11. The integrated block-type test cavity structure as described in claim 6, characterized in that, It also includes a test gas dry gas inlet channel, the outlet of which is connected to a third flow regulating valve, which is connected to the test gas dry gas channel.

12. An integrated block-type test cavity structure, characterized in that, include: The first test chamber and the second test chamber are provided. The first test chamber has a first groove with a first opening and the second test chamber has a second groove with a second opening. The space between the first opening and the second opening is used to place the sample. The first test chamber has a first test gas inlet channel and a first test gas exhaust channel that are connected to the first groove. The second test chamber has a carrier gas inlet channel, a carrier gas moisture channel, a carrier gas exhaust channel, and a second test gas inlet channel. The outlet port of the carrier gas exhaust channel is used to connect to a gas sensor. The first test gas inlet channel is connected to the second test gas inlet channel, and the carrier gas moisture channel and the carrier gas exhaust channel are both connected to the second groove. The carrier gas inlet channel is connected to the inlet end of the carrier gas humidity generator embedded in the second test chamber. The outlet end of the carrier gas humidity generator is connected to the carrier gas moisture channel through the fourth flow regulating valve. A second humidity sensor is provided in the carrier gas moisture channel. The second test chamber has a test gas moisture inlet channel and a test gas moisture channel. A test gas humidity generator is also embedded in the second test chamber. The test gas moisture inlet channel is connected to the test gas humidity generator, the test gas humidity generator is connected to the test gas moisture channel, and the test gas moisture channel is connected to the second test gas inlet channel. The side of the second test chamber is provided with a humidity sensor seat with a gas passage. A first humidity sensor is installed in the gas passage, and the gas passage is connected to the second test gas inlet channel. It also includes a first flow regulating valve, which is located at the connection between the test gas moisture channel and the second test gas inlet channel; The second test gas inlet channel includes a first branch channel and a second branch channel. The first port of the first branch channel is connected to the first flow regulating valve, and the second port of the first branch channel is located on the side wall of the second test chamber and is sealed and connected to the inlet port of the gas passage of the humidity sensor seat. The first port of the second branch channel is located on the side wall of the second test chamber and is sealed and connected to the gas outlet port of the humidity sensor seat. The second port of the second branch channel is sealed and connected to the first test gas inlet channel.

13. The integrated block-type test cavity structure as described in claim 12, characterized in that, The second test chamber has a second test gas exhaust channel, and the first test gas exhaust channel is connected to the second test gas exhaust channel.

14. The integrated block-type test cavity structure as described in claim 12, characterized in that, The exhaust port of the first test gas exhaust channel is located on the side wall of the first test chamber.

15. The integrated block-type test cavity structure as described in claim 12, characterized in that, The second test chamber has a first water filling channel that is connected to the test gas humidity generator.

16. The integrated block-type test cavity structure as described in claim 12, characterized in that, The second test chamber has a second water supply channel that is connected to the carrier gas humidity generator.

17. The integrated block-type test cavity structure as described in claim 12, characterized in that, The first test chamber is provided with a first sealing element for sealing with the sample, a second sealing element is provided at the connection position between the first test gas inlet channel and the second test gas inlet channel, and a third sealing element is provided at the connection position between the first test gas exhaust channel and the second test gas exhaust channel.

18. A gas permeability tester, characterized in that, Includes the integrated block test chamber structure as described in any one of claims 1-17.

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