A device for testing the air permeability of carbon materials

Abstract

The utility model discloses a kind of carbon material air permeability testing devices, including carbon material board, recess is provided in fixed ring, one end of movable ring is set in recess, carbon material board is set between the end of movable ring and the bottom of recess, inner sealing ring is sealed between the bottom of recess and carbon material board, outer sealing ring is sealed between the end of movable ring and carbon material board, movable ring is fixed on fixed ring by locking sleeve, first air passage is provided on the middle part on fixed ring, second air passage is provided on movable ring, and carbon material board is matched, gas feeding assembly is sealed with first air passage Communication. Carbon material board is sealed in the middle by inner sealing ring and outer sealing ring, then pressurized sealing is carried out by fixed ring, movable ring and locking sleeve, so that the sealing property of carbon material board in testing process is good, more accurate value can be measured, error in testing process is reduced, structure is simple simultaneously, dismounting is convenient, and testing time can be effectively saved.

Description

Technical Field

[0001] This utility model relates to the technical field of air permeability testing equipment, and in particular to an air permeability testing device for carbon materials. Background Technology

[0002] Some carbon products require gas permeability testing. Existing technologies for testing the gas permeability of materials have complex structures, are troublesome to disassemble and assemble, and have poor sealing of some testing equipment, resulting in large errors in the test results and failing to achieve high-precision testing of materials. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a carbon material air permeability testing device.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A carbon material permeability testing device includes a fixed ring, a movable ring, a locking sleeve, an inner sealing ring, an outer sealing ring, a carbon material plate, and an air supply component. The fixed ring has a groove, one end of the movable ring is disposed within the groove, the carbon material plate is disposed between the end of the movable ring and the bottom of the groove, the inner sealing ring is sealed between the bottom of the groove and the carbon material plate, and the outer sealing ring is sealed between the end of the movable ring and the carbon material plate. The movable ring is fixed to the fixed ring by the locking sleeve. A first air passage, cooperating with the carbon material plate, is provided on the upper middle part of the fixed ring, and a second air passage, cooperating with the carbon material plate, is provided on the movable ring. The air supply component is sealed and connected to the first air passage.

[0006] Furthermore, an outer limiting ring is sealed and fixedly provided on the outer wall of the movable ring, and an inner limiting ring that cooperates with the outer limiting ring is provided on the inner wall of the locking sleeve, with the inner wall of the inner limiting ring cooperating with the outer wall of the movable ring.

[0007] Furthermore, an inner sealing groove that mates with the inner sealing ring is provided at the bottom of the groove, and an outer sealing groove that mates with the outer sealing ring is provided at the end of the movable ring.

[0008] Furthermore, the fixing ring is provided with an external thread, and the locking sleeve is provided with an internal thread that mates with the external thread.

[0009] Furthermore, the inner sealing ring and the outer sealing ring are coaxially arranged.

[0010] Furthermore, both the inner sealing ring and the outer sealing ring are rubber sealing rings.

[0011] Furthermore, the gas delivery assembly includes a gas delivery pipe, an inlet valve, a pressure transmitter, a flow transmitter, a vent valve, and a shut-off valve. The output end of the gas delivery pipe is sealed and connected to the first vent. The inlet valve, the pressure transmitter, the flow transmitter, and the shut-off valve are sequentially and sealed on the gas delivery pipe. The vent valve is provided on the gas delivery pipe and is located between the fixed ring and the shut-off valve.

[0012] Furthermore, a pressure regulating valve is provided on the gas pipeline, and the pressure regulating valve is located between the gas inlet valve and the pressure transmitter.

[0013] The beneficial effects of this utility model are:

[0014] 1) In this technology, the carbon material plate is sealed in the middle by an inner sealing ring and an outer sealing ring, and then pressurized and sealed by a fixed ring, a movable ring and a locking sleeve. This makes the carbon material plate have good sealing performance during the test, which can measure more accurate values ​​and reduce errors in the test process. At the same time, the structure is simple and easy to disassemble and assemble, which can effectively save test time.

[0015] 2) In this technology, the inner sealing groove and the outer sealing groove are set to facilitate the installation of the inner sealing ring and the outer sealing ring, and to prevent displacement of the inner sealing ring and the outer sealing ring during installation, which could lead to poor sealing during the experiment.

[0016] 3) In this technology, the retaining ring and the locking sleeve are fixed by threads, which facilitates installation and disassembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection structure of this device;

[0018] Figure 2 This is an exploded view of the carbon material plate during installation.

[0019] In the diagram, 1-fixed ring, 2-movable ring, 3-locking sleeve, 4-inner sealing ring, 5-outer sealing ring, 6-carbon material plate, 7-groove, 8-first vent, 9-second vent, 10-outer limiting ring, 11-inner limiting ring, 12-inner sealing groove, 13-outer sealing groove, 14-gas supply pipe, 15-inlet valve, 16-pressure transmitter, 17-flow transmitter, 18-exhaust valve, 19-stop valve, 20-pressure regulating valve. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] See Figures 1-2 This utility model provides a technical solution:

[0022] A carbon material permeability testing device includes a fixed ring 1, a movable ring 2, a locking sleeve 3, an inner sealing ring 4, an outer sealing ring 5, a carbon material plate 6, and an air supply component. The fixed ring 1 has a groove 7, one end of the movable ring 2 is positioned within the groove 7, and the carbon material plate 6 is positioned between the end of the movable ring 2 and the bottom of the groove 7. The inner sealing ring 4 is sealed between the bottom of the groove 7 and the carbon material plate 6, and the outer sealing ring 5 is sealed between the end of the movable ring 2 and the carbon material plate 6. The movable ring 2 is fixed to the fixed ring 1 by the locking sleeve 3. A first air passage 8, which mates with the carbon material plate 6, is located on the upper middle part of the fixed ring 1. A second air passage 9, which mates with the carbon material plate 6, is located on the movable ring 2. The air supply component is sealed and connected to the first air passage 8. The inner sealing ring 4 and the outer sealing ring 5 are coaxially arranged. Both the inner sealing ring 4 and the outer sealing ring 5 are rubber sealing rings. The fixed ring 1, movable ring 2, and locking sleeve 3 are all made of stainless steel. The first vent 8 on the fixed ring 1 is sealed and connected to the air supply component. The carbon material plate 6 is sandwiched between the inner sealing ring 4 and the outer sealing ring 5 to achieve a seal. The fixed ring 1 and movable ring 2 work together to clamp the inner sealing ring 4 and the outer sealing ring 5. The fixed ring 1 and locking sleeve 3 work together to fix the movable ring 2, the inner sealing ring 4, the outer sealing ring 5, and the carbon material plate 6 inside the space between the fixed ring 1 and the locking sleeve 3. The fixed ring 1, movable ring 2, locking sleeve 3, inner sealing ring 4, outer sealing ring 5, and carbon material plate 6 are all circular and coaxially arranged. The first vent 8 and the second vent 9 have circular cross-sections and are coaxially arranged. The carbon material plate 6 is a carbon product whose air permeability needs to be measured in the experiment.

[0023] In some embodiments, an outer limiting ring 10 is fixedly and sealed on the outer wall of the movable ring 2, and an inner limiting ring 11 that cooperates with the outer limiting ring 10 is provided on the inner wall of the locking sleeve 3. The inner wall of the inner limiting ring 11 cooperates with the outer wall of the movable ring 2. The outer limiting ring 10 and the inner limiting ring 11 cooperate to facilitate the pressing of the end of the movable ring 2 against the outer sealing ring 5, thereby pressing the inner sealing ring 4, the outer sealing ring 5, and the carbon material plate 6 together to achieve a better seal.

[0024] In some embodiments, an inner sealing groove 12 that mates with the inner sealing ring 4 is provided on the bottom of the groove 7, and an outer sealing groove 13 that mates with the outer sealing ring 5 is provided on the end of the movable ring 2. The inner sealing groove 12 and the outer sealing groove 13 facilitate the installation of the inner sealing ring 4 and the outer sealing ring 5, and prevent displacement of the inner sealing ring 4 and the outer sealing ring 5 during installation, which could lead to poor sealing.

[0025] In some embodiments, the retaining ring 1 is provided with an external thread, and the locking sleeve 3 is provided with an internal thread that mates with the external thread. The retaining ring 1 and the locking sleeve 3 are fixed together by threads, which facilitates installation and disassembly.

[0026] In some embodiments, the gas delivery assembly includes a gas delivery pipe 14, an inlet valve 15, a pressure transmitter 16, a flow transmitter 17, a vent valve 18, and a shut-off valve 19. The output end of the gas delivery pipe 14 is sealed and connected to the first ventilation channel 8. The inlet valve 15, pressure transmitter 16, flow transmitter 17, and shut-off valve 19 are sequentially and sealed on the gas delivery pipe 14. The vent valve 18 is provided on the gas delivery pipe 14 and is located between the fixed ring 1 and the shut-off valve 19. A pressure regulating valve 20 is provided on the gas delivery pipe 14 and is located between the inlet valve 15 and the pressure transmitter 16. The gas supply pipe 14 is connected to a gas source at its input end. The gas from the gas source passes through the inlet valve 15, pressure regulating valve 20, pressure transmitter 16, flow transmitter 17, and shut-off valve 19 in sequence before entering the first ventilation channel 8. The gas then passes through the carbon material plate 6 for testing. The pressure transmitter 16 and flow transmitter 17 are both existing technologies. The pressure transmitter 16 and flow transmitter 17 are used together to measure the air permeability of the carbon material plate 6. The inlet valve 15, pressure regulating valve 20, vent valve 18, and shut-off valve 19 are all existing technologies. The inlet valve 15 controls whether the gas supply pipe 14 receives gas, and the shut-off valve 19 controls whether the gas supply pipe 14 enters the carbon material plate 6. The pressure regulating valve 20 is used to adjust the pressure in the gas supply pipe 14, and the vent valve 18 discharges the air from the gas supply pipe 14. The experiment is conducted after the air is discharged.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "one end", "top", "middle", "other end", "coaxial", "one side", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "setting", "installation", "connection", "fixing", "hinged" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A device for testing the air permeability of carbon materials, characterized in that: The assembly includes a fixed ring (1), a movable ring (2), a locking sleeve (3), an inner sealing ring (4), an outer sealing ring (5), a carbon material plate (6), and an air supply component. The fixed ring (1) has a groove (7) inside. One end of the movable ring (2) is disposed within the groove (7). The carbon material plate (6) is disposed between the end of the movable ring (2) and the bottom of the groove (7). The inner sealing ring (4) is sealed between the bottom of the groove (7) and the carbon material plate (6). Between the outer sealing ring (5) and the carbon material plate (6), the outer sealing ring (5) is sealed between the end of the movable ring (2) and the carbon material plate (6). The movable ring (2) is fixed on the fixed ring (1) by the locking sleeve (3). The fixed ring (1) has a first vent (8) that cooperates with the carbon material plate (6) in the middle part. The movable ring (2) has a second vent (9) that cooperates with the carbon material plate (6). The air supply component is sealed and connected to the first vent (8).

2. The carbon material air permeability testing device according to claim 1, characterized in that: An outer limiting ring (10) is fixedly and sealed on the outer wall of the movable ring (2), and an inner limiting ring (11) that cooperates with the outer limiting ring (10) is provided on the inner wall of the locking sleeve (3). The inner wall of the inner limiting ring (11) cooperates with the outer wall of the movable ring (2).

3. A carbon material air permeability testing device according to claim 1 or 2, characterized in that: The bottom of the groove (7) is provided with an inner sealing groove (12) that cooperates with the inner sealing ring (4), and the end of the movable ring (2) is provided with an outer sealing groove (13) that cooperates with the outer sealing ring (5).

4. A carbon material air permeability testing device according to claim 1 or 2, characterized in that: The fixing ring (1) is provided with an external thread, and the locking sleeve (3) is provided with an internal thread that mates with the external thread.

5. A carbon material air permeability testing device according to claim 1 or 2, characterized in that: The inner sealing ring (4) and the outer sealing ring (5) are coaxially arranged.

6. A carbon material air permeability testing device according to claim 1 or 2, characterized in that: Both the inner sealing ring (4) and the outer sealing ring (5) are rubber sealing rings.

7. A carbon material air permeability testing device according to claim 1 or 2, characterized in that: The gas delivery assembly includes a gas delivery pipe (14), an inlet valve (15), a pressure transmitter (16), a flow transmitter (17), a vent valve (18), and a shut-off valve (19). The output end of the gas delivery pipe (14) is sealed and connected to the first ventilation channel (8). The inlet valve (15), the pressure transmitter (16), the flow transmitter (17), and the shut-off valve (19) are sequentially sealed on the gas delivery pipe (14). The vent valve (18) is provided on the gas delivery pipe (14) and is located between the fixed ring (1) and the shut-off valve (19).

8. The carbon material air permeability testing device according to claim 7, characterized in that: A pressure regulating valve (20) is provided on the gas pipeline (14), and the pressure regulating valve (20) is located between the gas inlet valve (15) and the pressure transmitter (16).

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