Device for testing thermal conductivity of interlayer insulation material of liquid hydrogen and liquid oxygen container

Abstract

The utility model relates to liquid hydrogen liquid oxygen container interlayer heat insulation material heat conductivity coefficient testing arrangement, including bottom plate, top plate and side plate, the bottom plate is fixed with base on, and the base is provided with the recess, and the recess is provided with first spring, heat insulating plate and heat conduction plate, and the heat conduction plate is provided with first temperature sensor between heat insulating plate, the top plate is fixed with the cylinder, and the cylinder has telescopic axle, and the lower end of telescopic axle is fixed with lifting plate, and the lifting plate is fixed with punch, and the lower end surface of punch is fixed with heating plate, and heating plate is provided with second temperature sensor between punch, the lifting plate is provided with a plurality of first guide rod, and the upper end of first guide rod is fixed with limit stop, and the lower end is fixed with pressure block, and first guide rod is equipped with second spring, the utility model improves the measurement efficiency and accuracy of heat conductivity coefficient.

Description

Technical Field

[0001] This utility model relates to a testing device for insulation materials used in liquid hydrogen and liquid oxygen containers, and in particular, a testing device for the thermal conductivity of the interlayer insulation material of liquid hydrogen and liquid oxygen containers. Background Technology

[0002] Liquid hydrogen and liquid oxygen containers typically consist of an inner tank and an outer tank. The space between the inner and outer tanks is filled with insulating material to prevent heat transfer. Therefore, the thermal conductivity of the insulating material used in the space is a crucial factor. Before using the insulating material, its thermal conductivity must be tested. Existing devices for testing the thermal conductivity of insulating materials usually require cutting the excessively large insulating material into smaller pieces with shapes that fit the testing device. This testing process is cumbersome, time-consuming, and inefficient. Summary of the Invention

[0003] The purpose of this invention is to provide a device for testing the thermal conductivity of the interlayer insulation material of liquid hydrogen and liquid oxygen containers to improve testing efficiency.

[0004] The technical solution to achieve the purpose of this utility model is as follows:

[0005] A device for testing the thermal conductivity of the insulation material of the interlayer of a liquid hydrogen and liquid oxygen container includes a base plate, a top plate, and a side plate disposed between the base plate and the top plate. A base is fixed on the base plate, and the base is provided with an upward-opening groove. A first spring, a heat insulation plate, and a heat-conducting plate are disposed in the groove. The lower surface of the heat-conducting plate is fixedly connected to the upper surface of the heat insulation plate. The upper end of the first spring abuts against the lower surface of the heat-conducting plate, and the lower end of the first spring abuts against the bottom of the groove. A first temperature sensor is disposed between the heat-conducting plate and the heat insulation plate, in contact with the heat-conducting plate.

[0006] A cylinder is fixed on the top plate. The cylinder has a downwardly extending telescopic shaft. The lower end of the telescopic shaft passes through the top plate. A lifting plate is fixed to the lower end of the telescopic shaft. A punch matching the groove is fixed to the lower surface of the lifting plate. A heating plate is fixed to the lower end face of the punch. A second temperature sensor in contact with the heating plate is provided between the heating plate and the punch.

[0007] The lifting plate is provided with a plurality of first guide rods that pass through the lifting plate and slide in cooperation with the lifting plate. The upper end of the first guide rod is located above the lifting plate and is fixed with a limit block, and the lower end is fixed with a pressure block. The pressure block is located above the base. In the vertical direction, the projection of the pressure block overlaps at least part of the projection of the upper surface of the base. A second spring is fitted on the first guide rod. The upper end of the second spring contacts the lower surface of the lifting plate, and the lower end contacts the upper surface of the pressure block.

[0008] With the above structure, a large area of ​​insulation material directly covers the upper end of the base. Then, the cylinder controls the lifting plate to descend, and the pressure block contacts the insulation material on the upper end of the base. Under the elastic force of the second spring, the pressure block presses the insulation material firmly against the upper surface of the base. Then, the cylinder continues to control the lifting plate to descend, and the punch contacts the insulation material and presses it into the groove of the base. At this time, the punch and the groove cooperate to form a punching and shearing action on the insulation material. The sheared insulation material follows into the groove and is pressed between the heating plate and the heat-conducting plate. Then, the heating plate heats up. By measuring the temperature of the heating plate and the temperature of the heat-conducting plate, the thermal conductivity of the insulation material can be calculated. There is no need to cut the insulation material beforehand, saving time and improving the measurement efficiency. Moreover, during the measurement, the heating plate, insulation material, and heat-conducting plate are all in the groove, reducing the influence of external factors on the measurement results and improving the accuracy of the measurement. This utility model improves the measurement efficiency and accuracy of the thermal conductivity.

[0009] Preferably, in order to ensure the stability of the pressing block's contact with the base, the lower end of the pressing block is provided with an inclined first abutment surface, and the upper end of the base is provided with a second abutment surface that mates with the first abutment surface.

[0010] Preferably, in order to ensure the stability of the lifting plate's lifting, a plurality of second guide rods are fixed on the upper surface of the lifting plate, and the second guide rods extend upward through the top plate and slide in cooperation with the top plate. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the test state of this utility model. Detailed Implementation

[0014] like Figure 1 and Figure 2As shown, the present invention relates to a device for testing the thermal conductivity of the interlayer insulation material of a liquid hydrogen / liquid oxygen container, comprising a base plate 1, a top plate 2, and a side plate 3 disposed between the base plate and the top plate. A base 4 is fixed to the base plate, and the base has an upward-opening groove 41. A first spring 5, a heat insulation plate 6, and a heat-conducting plate 7 are disposed within the groove. The lower surface of the heat-conducting plate is fixedly connected to the upper surface of the heat insulation plate. The upper end of the first spring abuts against the lower surface of the heat-conducting plate, and the lower end of the first spring abuts against the bottom of the groove. A first temperature sensor 8 is disposed between the heat-conducting plate and the heat insulation plate, in contact with the heat-conducting plate. A cylinder 9 is fixed to the top plate, and the cylinder has a downwardly extending telescopic shaft 10. The lower end of the telescopic shaft passes through the top plate, and a lifting plate 11 is fixed to the lower end of the telescopic shaft. A punch 12 matching a groove is fixed to the lower surface of the lifting plate, and a heating plate 13 is fixed to the lower end face of the punch. A second temperature sensor 14 is provided between the heating plate and the punch, contacting the heating plate. The lifting plate is provided with multiple first guide rods 15 that pass through the lifting plate and slide in cooperation with it. The upper end of the first guide rod is located above the lifting plate and is fixed with a limit block 16, and the lower end is fixed with a pressure block 17, which is located above the base. A second spring 18 is fitted on the first guide rod, with the upper end of the second spring contacting the lower surface of the lifting plate and the lower end contacting the upper surface of the pressure block. The lower end of the pressure block is provided with an inclined first abutment surface 19, and the upper end of the base is provided with a second abutment surface 20 that cooperates with the first abutment surface. Multiple second guide rods 21 are fixed to the upper surface of the lifting plate, and the second guide rods extend upward through the top plate and slide in cooperation with it.

[0015] With the above structure, a large area of ​​insulation material directly covers the upper end of the base. Then, the cylinder controls the lifting plate to descend, and the pressure block contacts the insulation material on the upper end of the base. Under the elastic force of the second spring, the pressure block presses the insulation material firmly against the upper surface of the base. Then, the cylinder continues to control the lifting plate to descend, and the punch contacts the insulation material and presses it into the groove of the base. At this time, the punch and the groove cooperate to form a punching and shearing action on the insulation material. The sheared insulation material follows into the groove and is pressed between the heating plate and the heat-conducting plate. Then, the heating plate heats up. By measuring the temperature of the heating plate and the temperature of the heat-conducting plate, the thermal conductivity of the insulation material can be calculated. There is no need to cut the insulation material beforehand, saving time and improving the measurement efficiency. Moreover, during the measurement, the heating plate, insulation material, and heat-conducting plate are all in the groove, reducing the influence of external factors on the measurement results and improving the accuracy of the measurement. This utility model improves the measurement efficiency and accuracy of the thermal conductivity.

[0016] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A device for testing the thermal conductivity of the interlayer insulation material of a liquid hydrogen / liquid oxygen container, characterized in that: The device includes a base plate, a top plate, and a side plate disposed between the base plate and the top plate. A base is fixed on the base plate, and the base is provided with an upward-opening groove. A first spring, a heat insulation plate, and a heat-conducting plate are disposed in the groove. The lower surface of the heat-conducting plate is fixedly connected to the upper surface of the heat insulation plate. The upper end of the first spring abuts against the lower surface of the heat-conducting plate, and the lower end of the first spring abuts against the bottom of the groove. A first temperature sensor is disposed between the heat-conducting plate and the heat insulation plate, and is in contact with the heat-conducting plate. A cylinder is fixed on the top plate. The cylinder has a downwardly extending telescopic shaft. The lower end of the telescopic shaft passes through the top plate. A lifting plate is fixed to the lower end of the telescopic shaft. A punch matching the groove is fixed to the lower surface of the lifting plate. A heating plate is fixed to the lower end face of the punch. A second temperature sensor in contact with the heating plate is provided between the heating plate and the punch. The lifting plate is provided with a plurality of first guide rods that pass through the lifting plate and slide in cooperation with the lifting plate. The upper end of the first guide rod is located above the lifting plate and is fixed with a limit block, and the lower end is fixed with a pressure block. The pressure block is located above the base. In the vertical direction, the projection of the pressure block overlaps at least part of the projection of the upper surface of the base. A second spring is fitted on the first guide rod. The upper end of the second spring contacts the lower surface of the lifting plate, and the lower end contacts the upper surface of the pressure block.

2. The device for testing the thermal conductivity of the interlayer insulation material of a liquid hydrogen / liquid oxygen container according to claim 1, characterized in that: The lower end of the pressure block is provided with an inclined first abutment surface, and the upper end of the base is provided with a second abutment surface that mates with the first abutment surface.

3. The device for testing the thermal conductivity of the interlayer insulation material of a liquid hydrogen / liquid oxygen container according to claim 1, characterized in that: The upper surface of the lifting plate is fixed with a plurality of second guide rods, which extend upward through the top plate and slide in cooperation with the top plate.

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