Aerogel thermal insulation material performance testing device

Abstract

This utility model discloses a performance testing device for aerogel thermal insulation materials, including a test chamber. A heat source chamber is fixedly connected to the bottom of the test chamber. A heat source module and a first temperature sensor are fixedly installed inside the heat source chamber. A circular hole communicating with the heat source chamber is provided on the bottom surface of the test chamber. A groove for placing aerogel plate-shaped material is provided around the circular hole. A second temperature sensor is fixedly installed inside the test chamber. A vacuum extraction port and an inflation port are fixedly provided on the side wall of the test chamber. A barometer is provided at the top of the test chamber. This utility model can simulate different pressure environments from high vacuum to high pressure and can be filled with different atmospheres such as inert gas and air, thereby measuring the actual thermal insulation performance of aerogel materials under different atmospheres and pressures. By integrating a ring-shaped semiconductor cooler, the test chamber can be actively cooled to realize the determination of thermal insulation performance under low-temperature environments.

Description

Technical Field

[0001] This utility model relates to the technical field of aerogel material testing devices, specifically to a device for testing the performance of aerogel thermal insulation materials. Background Technology

[0002] Aerogels, as nanoporous super insulating materials, are crucial for performance in extreme environments, such as the vacuum cryogenic environment in aerospace or the high-temperature environment inside new energy battery packs where specific atmospheres may exist. Most existing testing devices operate at ambient temperature and pressure, failing to simulate these special conditions, leading to discrepancies between test results and actual application performance. Utility Model Content

[0003] (I) Technical Issues

[0004] This invention provides a performance testing device for aerogel thermal insulation materials, which solves the problem that most existing testing devices can only test under normal temperature and pressure, and cannot simulate special working conditions such as vacuum cryogenic environment or high temperature specific atmosphere environment in the aerospace field, resulting in deviation between test results and actual application performance.

[0005] (II) Technical Content

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a performance testing device for aerogel thermal insulation materials, including a test chamber, a sealed door hinged to the front of the test chamber, a heat source chamber fixed and connected to the bottom of the test chamber, a heat source module and a first temperature sensor fixedly installed inside the heat source chamber, a circular hole communicating with the heat source chamber on the bottom surface of the test chamber, a groove for placing aerogel plate-like material around the circular hole, a fixing mechanism for pressing the aerogel material fixedly installed on the top surface of the test chamber, a second temperature sensor fixedly installed inside the test chamber; a vacuum pump port for evacuating the gas inside the test chamber fixedly installed on the side wall of the test chamber; an inflation port for filling the test chamber with gas from an external gas source fixedly installed on the side wall of the test chamber; and a barometer for real-time monitoring of the gas pressure inside the test chamber installed at the top of the test chamber.

[0007] Furthermore, a semiconductor cooler is fixedly installed on the rear side wall inside the test chamber. The hot end of the semiconductor cooler extends to the outside of the test chamber and is connected to heat dissipation fins. A cooling fan for actively dissipating heat from the semiconductor cooler is fixedly installed on the rear side of the test chamber.

[0008] Furthermore, the heat source module includes an electric heating plate.

[0009] Furthermore, the sealed door is equipped with a transparent observation window, and the test chamber, the sealed door, and the heat source chamber all adopt a double-layer hollow structure and are filled with thermal insulation cotton.

[0010] Furthermore, the fixing mechanism includes an electric push rod fixedly disposed on the top surface inside the test chamber, and a rectangular frame for pressing the aerogel material is fixedly disposed on the piston end of the electric push rod.

[0011] (III) Technical Effects

[0012] Compared with the prior art, the advantages of this invention are as follows: This invention can simulate different pressure environments from high vacuum to high pressure, and can be filled with different atmospheres such as inert gas and air, thereby measuring the real thermal insulation performance of aerogel materials under different atmospheres and pressures, which greatly expands the application range of the device; by integrating a ring semiconductor cooler, the test chamber can be actively cooled to realize the thermal insulation performance test of aerogel materials under low external environment, which is used to assess the thermal insulation stability of the material. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the main structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of this utility model in use.

[0017] Figure 5 This is a schematic diagram of the cross-sectional structure of this utility model.

[0018] As shown in the figure: 1. Test chamber; 2. Sealed door; 3. Heat source chamber; 4. Heat source module; 5. Circular hole; 6. Groove; 7. First temperature sensor; 8. Second temperature sensor; 9. Vacuum extraction port; 10. Gas filling port; 11. Barometer; 12. Semiconductor cooler; 13. Heat sink fins; 14. Cooling fan; 15. Transparent observation window; 16. Electric push rod; 17. Rectangular frame; 18. Aerogel plate material. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", 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 structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Combined with appendix Figure 1 To be continued Figure 5 A performance testing device for aerogel thermal insulation materials includes a test chamber 1, a sealed door 2 hinged to the front of the test chamber 1, a heat source chamber 3 fixedly connected to the bottom of the test chamber 1, a heat source module 4 and a first temperature sensor 7 fixedly installed inside the heat source chamber 3, a circular hole 5 communicating with the heat source chamber 3 on the bottom surface of the test chamber 1, a groove 6 for placing aerogel plate-shaped material around the circular hole 5, a fixing mechanism for pressing the aerogel material fixedly installed on the top surface of the test chamber 1, a second temperature sensor 8 fixedly installed inside the test chamber 1, a vacuum pump port 9 fixedly installed on the side wall of the test chamber 1 for evacuating the gas inside the test chamber 1, an inflation port 10 fixedly installed on the side wall of the test chamber 1 for filling the test chamber 1 with gas from an external gas source, and a barometer 11 fixedly installed at the top of the test chamber 1 for real-time monitoring of the gas pressure inside the test chamber 1.

[0023] In this embodiment, as a preferred technical solution, a semiconductor cooler 12 is fixedly provided on the rear side wall inside the test chamber 1. The hot end of the semiconductor cooler 12 extends to the outside of the test chamber 1 and is connected to a heat dissipation fin 13. A cooling fan 14 for actively dissipating heat from the semiconductor cooler 12 is fixedly provided on the rear side of the test chamber 1.

[0024] In this embodiment, as a preferred technical solution, the heat source module 4 includes an electric heating plate. The sealed door 2 is provided with a transparent observation window 15. The test box 1, the sealed door 2, and the heat source chamber 3 all adopt a double-layer hollow structure and are filled with heat insulation cotton.

[0025] In this embodiment, as a preferred technical solution, the fixing mechanism includes an electric push rod 16 fixedly disposed on the top surface inside the test chamber 1, and a rectangular frame 17 for pressing the aerogel material is fixedly disposed on the piston end of the electric push rod 16.

[0026] The working process of this utility model is as follows:

[0027] 1. Open the sealing door 2, place the aerogel plate material to be tested into the groove 6 inside the test chamber 1, ensuring that the material covers the round hole 5, close the sealing door 2 and ensure a sealed state.

[0028] 2. Start the electric push rod 16 to drive the rectangular frame 17 to press the aerogel material, ensuring that the material is stable in position during the test and avoiding displacement that could affect the test results.

[0029] 3. If a vacuum environment needs to be simulated, connect an external vacuum pump through the vacuum pumping port 9 fixed on the side wall of the test chamber 1, start the vacuum pump to pump air out of the test chamber 1, and at the same time monitor the air pressure inside the test chamber 1 in real time through the barometer 11 at the top of the test chamber 1 until the air pressure reaches the required vacuum level, then close the control valve of the vacuum pump and the vacuum pumping port 9.

[0030] 4. If a specific atmosphere needs to be simulated, first evacuate the gas in the test chamber 1 according to the above vacuum evacuation steps, and then connect the corresponding gas source (such as inert gas, air, etc.) to the gas filling port 10 fixed on the side wall of the test chamber 1 to fill the test chamber 1 with the specified gas. During this period, the gas pressure is monitored by the barometer 11. After the required pressure is reached, close the control valve of the gas source and the gas filling port 10.

[0031] 5. After the environment adjustment is completed, the test is carried out. The heat source module 4 fixed inside the heat source chamber 3 is started. The heat generated by the heat source module 4 is transferred to the aerogel material through the round hole 5. The heat source temperature is monitored by the first temperature sensor 7 until the temperature reaches the required high temperature test conditions.

[0032] 6. Maintain the temperature of the heat source module 4. Under this condition, observe the data change of the second temperature sensor 8. Evaluate the thermal insulation performance of the aerogel material based on the change value or rate. At the same time as starting the heat source module 4, start the semiconductor cooler 12 fixed inside the rear side wall of the test chamber 1. The semiconductor cooler 12 causes the temperature inside the test chamber 1 to drop. Observe whether the thermal insulation performance of the aerogel changes in a low temperature environment or a low temperature vacuum environment.

[0033] 7. Throughout the test, the temperature of the heat source in the heat source chamber 3 is monitored by the first temperature sensor 7, the temperature of the relevant area of ​​the aerogel material in the test chamber 1 is monitored by the second temperature sensor 8, and the air pressure in the test chamber 1 is monitored by the barometer 11. The thermal insulation performance of the aerogel material under different working conditions (different air pressure, different gas environment, different temperature) is recorded to analyze its thermal insulation performance and thermal stability.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A performance testing device for aerogel thermal insulation materials, comprising a test chamber (1), a sealed door (2) hinged to the front of the test chamber (1), a heat source chamber (3) fixedly connected to the bottom of the test chamber (1), a heat source module (4) and a first temperature sensor (7) fixedly disposed inside the heat source chamber (3), characterized in that: The test chamber (1) has a circular hole (5) communicating with the heat source chamber (3) on the bottom surface inside. The circular hole (5) is surrounded by a groove (6) for placing aerogel plate-shaped material. The test chamber (1) has a fixing mechanism for pressing aerogel material on the top surface inside. The test chamber (1) has a second temperature sensor (8) fixed inside. The side wall of the test chamber (1) is fixed with an external vacuum pump and a vacuum pump port (9) for evacuating the gas inside the test chamber (1); the side wall of the test chamber (1) is fixed with an external gas source and an inflation port (10) for filling the test chamber (1) with gas; and the upper end of the test chamber (1) is equipped with a barometer (11) for real-time monitoring of the gas pressure inside the test chamber (1).

2. The aerogel thermal insulation material performance testing device according to claim 1, characterized in that, A semiconductor cooler (12) is fixedly installed on the rear wall inside the test chamber (1). The hot end of the semiconductor cooler (12) extends to the outside of the test chamber (1) and is connected to a heat dissipation fin (13). A cooling fan (14) for actively dissipating heat from the semiconductor cooler (12) is fixedly installed on the rear side of the test chamber (1).

3. The aerogel thermal insulation material performance testing device according to claim 1, characterized in that, The heat source module (4) includes an electric heating plate.

4. The aerogel thermal insulation material performance testing device according to claim 1, characterized in that, The sealed door (2) is provided with a transparent observation window (15). The test box (1), the sealed door (2) and the heat source chamber (3) all adopt a double-layer hollow structure and are filled with heat insulation cotton.

5. The aerogel thermal insulation material performance testing device according to claim 1, characterized in that, The fixing mechanism includes an electric push rod (16) fixedly installed on the top surface inside the test chamber (1), and a rectangular frame (17) for pressing the aerogel material is fixedly installed on the piston end of the electric push rod (16).

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