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Rapid response thermocouple temperature sensor

A thermocouple sensor and temperature sensor technology, applied in the field of sensing, can solve the problems of easy open circuit of temperature sensing point, poor dynamic measurement effect, long production cycle, etc., to avoid long curing time, avoid response lag, and shorten response time Effect

Inactive Publication Date: 2014-10-15
BEIJING INST OF AEROSPACE TESTING TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] At present, the thermocouple temperature sensor that can be used in low temperature and high pressure environments adopts a bare temperature sensing point structure, and the temperature sensing point of the temperature sensor is fixed by wrapping low temperature glue, but the low temperature glue takes a long time to fully cure, filling is time-consuming and laborious, and the production cycle is too long. Long, and the thermocouple temperature sensor produced in this way has the disadvantages of long response time, easy open circuit at the temperature sensing point, and low withstand voltage. Under low temperature and high pressure environments, the dynamic measurement effect will be poor and the measured value will be distorted. There are also security risks in

Method used

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  • Rapid response thermocouple temperature sensor

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Embodiment Construction

[0015] Embodiments of the present invention will be described in detail below in conjunction with technical solutions and accompanying drawings.

[0016] The thermocouple wire 9 forms the thermocouple temperature-sensing point 3 by spot welding, and one end of the lead wire of the thermocouple wire 9 passes through the double-hole corundum tube 1 and inserts it into the sealed ball socket 6 .

[0017] Fill the thermally conductive filling material 4 around the temperature sensing point 3 of the temperature sensor thermocouple manufactured through the above process, and then weld it to the head 2, and then weld the head 2 to the long rod end of the sealing ball seat. Assemble the positioning compression block 7, the connecting nut 5 and the compression ring 8 sequentially on the ball end of the sealing ball seat.

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Abstract

The invention relates to a thermocouple temperature sensor which is applied a low-temperature and high-pressure environment and capable of rapidly responding. The thermocouple temperature sensor is composed of a 1 two-hole alundum tube, a 2 sealing head, a 3 thermocouple temperature-sensitive point, 4 heat-conducting filling material, a 5 connecting nut, a 6 sealing ball head base, a 7 positioning compressing block, a 8 compressing ring and a 9 thermocouple wire. The temperature-sensitive point and the sealing head of the temperature sensor are enabled to be connected by adopting a novel structure and welding technology. The sealing head is connected with the long-rod end of the sealing ball head base so that the rapid response effect is achieved, and defects that a conventional glue pouring technology is long in production period, time-consuming and labor-consuming are avoided. The thermocouple temperature sensor can bear 24MPa pressure intensity, 50g acceleration and 3000Hz frequency vibration intensity so that high-precision temperature measurement can be performed within a range of 20K-473K.

Description

technical field [0001] The invention belongs to the technical field of sensing, and relates to a temperature sensor which is applied in a low-temperature and high-pressure environment and can respond quickly. Background technique [0002] Temperature sensors are one of the important test devices in instruments and various products. Because of their wide variety, stable performance, and accurate measurement, they are widely used in various fields of production practice and provide countless conveniences for people's lives. [0003] At present, the thermocouple temperature sensor that can be used in low temperature and high pressure environments adopts a bare temperature sensing point structure, and the temperature sensing point of the temperature sensor is fixed by wrapping low temperature glue, but the low temperature glue takes a long time to fully cure, filling is time-consuming and laborious, and the production cycle is too long. long, and the thermocouple temperature sen...

Claims

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Application Information

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IPC IPC(8): G01K7/02
Inventor 董雪兰玉岐骆明强耿亚璋李山峰高沛杨晓阳
Owner BEIJING INST OF AEROSPACE TESTING TECH
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