Thermocouple comparison device

Abstract

The utility model relates to the technical field of thermocouples, and discloses a thermocouple comparison device, which comprises a heat insulation box, a heat conductor is detachably mounted in an inner cavity of the heat insulation box, a positioning plate is welded at the upper end of the heat conductor, a plurality of thermocouples are annularly distributed at the upper end of the heat conductor, and signal output ends of the thermocouples are communicated with data cables. According to the technical scheme, through the arrangement of the heat preservation box, the air storage bag and the air guide hose, during testing, the fixing plate can drive the cover plate to seal the heat preservation box, so that the comparison test of the thermocouple is facilitated, and the temperature of the thermocouple can be adjusted in the downward moving process of the fixing plate. The annular air bag is expanded to push the rubber ring to press and fit the penetrating data cable, so that the gap between the data cables is reduced, the heat loss is further reduced, the pressed data cable can be limited through the matching of the rubber ring and the groove, and the accuracy of the thermocouple comparison test is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouples, in particular to a thermocouple comparison device. Background Art

[0002] The thermal pad process qualification test is carried out on the selected thermal pad according to the typical installation technical status of satellite single-machine equipment to verify whether it can achieve the requirement of the installation surface contact heat transfer coefficient not less than 500W / (m2·k) under certain installation process conditions.

[0003] After searching, the publication number is (CN215639858U), which discloses a thermocouple comparison device, including: a constant temperature device and a heat conductor arranged in the constant temperature device; a plurality of thermoelectric coolers are arranged at the bottom of the heat conductor, and the plurality of thermoelectric coolers are arranged circumferentially along the axis of the heat conductor; a platinum resistor is arranged at the top center of the heat conductor, and a plurality of thermocouples are arranged around the periphery of the platinum resistor, and the platinum resistor and the plurality of thermocouples are connected to a temperature display.

[0004] When implementing this technical solution, there are at least the following defects: although the utility model can arrange multiple thermocouples in a ring and observe the temperature at the same time, since multiple thermocouples are connected to data cables for testing, multiple derived data cables cannot be sealed, which will cause the temperature in the insulation box to lose, thereby affecting the accuracy of the data, and it is urgent to improve. Therefore, we propose a thermocouple comparison device. Utility Model Content

[0005] The utility model aims to provide a thermocouple comparison device to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thermocouple comparison device, comprising an insulation box, an inner cavity of the insulation box is detachably mounted with a heat conductor, a positioning plate is welded to the upper end of the heat conductor, a plurality of thermocouples are annularly distributed on the upper end of the heat conductor, a signal output end of the thermocouple is connected to a data cable, a cover plate is movably mounted on the upper end of the insulation box, a through groove is provided in the middle of the cover plate, an annular air bag is bonded to the inner side of the through groove, hydraulic cylinders are detachably mounted on both sides of the upper end of the insulation box, a fixing plate is fixedly mounted on the output end of the hydraulic cylinder, and an air storage bag is bonded to the lower end of the fixing plate on one side.

[0007] By adopting the above technical scheme, the fixed plate can be driven downward by the hydraulic cylinder, so that the fixed plate drives the cover plate to seal the insulation box, thereby facilitating the comparison test of the thermocouples. In addition, during the downward movement of the fixed plate, the annular airbag can be expanded to push the rubber ring to press and fit the passing data cables, thereby reducing the gaps between the data cables and further reducing heat loss. The cooperation between the rubber ring and the groove can limit the compressed data cables, further ensuring the accuracy of the thermocouple comparison test.

[0008] Optionally, the air outlet end of the air storage bag is connected to an air guide hose, and the other end of the air guide hose is connected to the annular air bag.

[0009] By adopting the above technical solution, it is convenient to conduct gas through the gas guide hose, thereby facilitating the compression of the data cable.

[0010] Optionally, a rubber ring is bonded to the inner side of the annular airbag, and a plurality of grooves are formed on the inner side of the rubber ring.

[0011] By adopting the above technical solution, it is convenient to limit the data cable.

[0012] Optionally, a slot is provided in the middle of the positioning plate, and the slots are distributed in a ring shape.

[0013] By adopting the above technical solution, it is easy to ensure the stability of the thermocouple and further improve the accuracy of the comparison data.

[0014] Optionally, the other end of the fixing plate is fixedly connected to the upper end of the cover plate.

[0015] By adopting the above technical solution, it is convenient to drive the cover plate to move, thereby completing the opening or closing of the thermal insulation box.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] The technical solution of the present application, through the provision of an insulation box, a heat conductor, a data cable, a thermocouple, an annular airbag, an air storage bag and an air guide hose, can enable the fixed plate to drive the cover plate to seal the insulation box during testing, thereby facilitating the comparison test of the thermocouples; and during the downward movement of the fixed plate, the annular airbag can expand to push the rubber ring to press and fit the passing data cable, thereby reducing the gap between the data cables and further reducing heat loss; the rubber ring can also cooperate with the groove to limit the compressed data cable, thereby further ensuring the accuracy of the thermocouple comparison test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of a thermocouple comparison device of the utility model;

[0020] Figure 2 This is a schematic diagram of the top view of the cover plate of a thermocouple comparison device of the utility model;

[0021] Figure 3 The utility model is a schematic diagram of the positioning plate structure of a thermocouple comparison device.

[0022] In the figure: 1. Insulation box; 11. Heat conductor; 12. Positioning plate; 13. Slot; 14. Data cable; 15. Thermocouple; 2. Cover plate; 21. Through groove; 22. Annular airbag; 23. Rubber ring; 24. Groove; 3. Hydraulic cylinder; 31. Fixing plate; 32. Air storage bag; 33. Air guide hose. DETAILED DESCRIPTION

[0023] See also Figure 1-3 The utility model provides a technical solution: a thermocouple comparison device, comprising an insulated box 1, a heat conductor 11 is detachably installed in the inner cavity of the insulated box 1, a positioning plate 12 is welded on the upper end of the heat conductor 11, a plurality of thermocouples 15 are arranged in an annular distribution on the upper end of the heat conductor 11, a data cable 14 is connected to the signal output end of the thermocouple 15, a cover plate 2 is movably installed on the upper end of the insulated box 1, a through groove 21 is opened in the middle of the cover plate 2, a ring-shaped air bag 22 is bonded to the inner side of the through groove 21, and the insulated box 1 is provided with a plurality of thermocouples 15. Hydraulic cylinders 3 are detachably installed on both sides of the upper end of the box 1, and a fixing plate 31 is fixedly installed on the output end of the hydraulic cylinder 3. An air storage bag 32 is bonded to the lower end of the fixing plate 31 on one side. A slot 13 is opened in the middle of the positioning plate 12, and the slots 13 are distributed in a ring shape, which is convenient for ensuring the stability of the thermocouple 15 and further improving the accuracy of the comparison data. The other end of the fixing plate 31 is fixedly connected to the upper end of the cover plate 2, which is convenient for driving the cover plate 2 to move, thereby completing the opening or closing of the insulation box 1.

[0024] The gas outlet end of the air storage bag 32 is connected to an air guide hose 33 , and the other end of the air guide hose 33 is connected to the annular air bag 22 , so that the gas can be conducted through the air guide hose 33 , thereby facilitating the compression of the data cable 14 .

[0025] A rubber ring 23 is bonded to the inner side of the annular airbag 22 , and a plurality of grooves 24 are formed on the inner side of the rubber ring 23 to facilitate limiting the data cable 14 .

[0026] During the test, firstly, multiple thermocouples 15 are passed through the through groove 21, and then through the slot 13 one by one to make the thermocouples 15 contact with the heat conductor 11, and then the hydraulic cylinder 3 is opened, so that the fixing plate 31 can be driven downward by the hydraulic cylinder 3, so that the fixing plate 31 drives the cover plate 2 to seal the insulation box 1, thereby facilitating the comparison test of the thermocouples 15, and during the downward movement of the fixing plate 31, the left fixing plate 31 will squeeze the air storage bag 32, and the gas in the air storage bag 32 will be discharged into the annular air bag 22 through the air guide hose 33, so that the annular air bag 22 expands and pushes the rubber ring 23 to press and fit the passed data cable 14, thereby reducing the gap between the data cables 14, further reducing the heat loss, and the cooperation between the rubber ring 23 and the groove 24 can limit the compressed data cable 14, further ensuring the accuracy of the comparison test of the thermocouple 15.

Claims

1. A thermocouple comparison device, comprising an insulation box (1), characterized in that: A heat conductor (11) is detachably mounted in the inner cavity of the heat preservation box (1), a positioning plate (12) is welded to the upper end of the heat conductor (11), a plurality of thermocouples (15) are arranged in an annular pattern on the upper end of the heat preservation box (11), and a data cable (14) is connected to the signal output end of the thermocouple (15). A cover plate (2) is movably mounted on the upper end of the heat preservation box (1), a through groove (21) is provided in the middle of the cover plate (2), and an annular air bag (22) is bonded to the inner side of the through groove (21). Hydraulic cylinders (3) are detachably mounted on both sides of the upper end of the heat preservation box (1), a fixing plate (31) is fixedly mounted on the output end of the hydraulic cylinder (3), and an air storage bag (32) is bonded to the lower end of one side of the fixing plate (31).

2. A thermocouple comparison device according to claim 1, characterized in that: The air outlet end of the air storage bag (32) is connected to an air guide hose (33), and the other end of the air guide hose (33) is connected to the annular air bag (22).

3. A thermocouple comparison device according to claim 2, characterized in that: A rubber ring (23) is bonded to the inner side of the annular airbag (22), and a plurality of grooves (24) are formed on the inner side of the rubber ring (23).

4. A thermocouple comparison device according to claim 2, characterized in that: A slot (13) is provided in the middle of the positioning plate (12), and the slots (13) are distributed in a ring shape.

5. A thermocouple comparison device according to claim 3, characterized in that: The other end of the fixing plate (31) is fixedly connected to the upper end of the cover plate (2).

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