一种应用于炭素材料透气度测试的试样夹持器
By designing a sample holder that includes an inflatable sealing ring and a gas control system, the problem of inaccurate measurement of carbon material permeability in the prior art has been solved, and accurate measurement of carbon material permeability under high pressure and equipment stability have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA KAIDE MEASUREMENT & CONTROL INSTRUMENT CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
The lack of existing instruments specifically designed for measuring the air permeability of carbon materials leads to inaccurate air permeability measurements and makes the equipment prone to damage.
A sample holder comprising an inflatable sealing ring, a cover plate, a dustproof assembly, and a gas control system was designed to maintain the stability and sealing of the sample under high pressure and provide accurate air permeability measurement.
It enables accurate air permeability measurement of carbon materials under high pressure, improving the reliability and consistency of test results and reducing the risk of equipment damage.
Smart Images
Figure CN224518452U_ABST
Abstract
Claims
1. A sample holder for use in the determination of the air permeability of carbon materials, comprising a cover plate (1), an air-tight seal (2), a sample (3), a sample support rod (5), a connection for a source of compressed air (6), a connection for a pressure gauge (7) and a connection for a source of test gas (8), characterised in that: The inflatable sealing ring (2) can withstand an inflation pressure of 1 MPa, and the test gas source port (8) allows 0.7 MPa of test gas to be introduced. The cover plate (1) is used to press the sample (3) into the holder to ensure the stability of the sample when the air permeability test is performed. The inflatable sealing ring (2) is set around the sample (3) and achieves a tight seal on the sample by inflation. The sample holder also includes a dustproof component (4), which is located below the sample (3) and is used to prevent fragments from entering the gas passage of the holder after the sample is broken. The dustproof component (4) includes a housing inserted into the top of the sample support rod, a gas guide dish (11) set in the housing, and a dustproof cover (10) installed on the top surface of the gas guide dish (11) by fixing screws (9).
2. The sample holder for testing the air permeability of carbon materials according to claim 1, characterized in that: The power supply port (6) is used to supply compressed air or nitrogen to the inflatable sealing ring (2), so that the inflatable sealing ring (2) can effectively fix and seal the sample (3).
3. The sample holder for testing the air permeability of carbon materials according to claim 2, characterized in that: The pressure gauge port (7) is connected to a pressure sensor to measure the pressure applied to the end face of the sample, providing necessary parameters for air permeability calculation.
4. The sample holder for testing the air permeability of carbon materials according to claim 3, characterized in that: The test gas source port (8) is used to connect air, oxygen, nitrogen, hydrogen or helium as test gas.
5. The sample holder for testing the air permeability of carbon materials according to claim 4, characterized in that: The sample holder also includes an automatic adjustment module that can adjust the inflation amount of the required inflatable sealing ring (2) according to the thickness of the sample (3).
6. The sample holder for testing the air permeability of carbon materials according to claim 5, characterized in that: A gas pressure control valve is provided between the power gas source port (6) and the test gas source port (8) to precisely control the pressure entering the inflation seal ring (2) and the flow rate of the test gas.
7. The sample holder for testing the air permeability of carbon materials according to claim 6, characterized in that: The cover plate (1) is equipped with a temperature regulation module, which can maintain a constant temperature on the sample surface during the test.
8. The sample holder for testing the air permeability of carbon materials according to claim 7, characterized in that: The main body of the clamp is made of transparent pressure-resistant material, allowing the operator to directly observe the state of the sample (3) during the test.