Air-cooled high temperature sensor

A temperature sensor, air-cooled technology, used in thermometers, instruments, thermometers with directly sensitive electrical/magnetic components, etc., can solve the problems of temperature measurement errors and complex structures of high-temperature temperature sensors, and achieve small thermal conductivity errors. , the effect of simple structure

Inactive Publication Date: 2017-10-20
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of temperature measurement error and complex structure of high temperature temperature sensor, and design an air-cooled high temperature temperature sensor, which can be applied to air flow temperature measurement at 1800°C

Method used

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Embodiment Construction

[0020] Below in conjunction with embodiment and accompanying drawing, the invention is further described.

[0021] An air-cooled high-temperature temperature sensor, including a thermocouple 1, an insulating sleeve 2, a shield cover 3, a casing 4, a mounting flange 5 and an outlet seat 6. After the shielding cover 3 and the shell 4 are welded, the thermocouple 1 is penetrated into the insulating sleeve 2 and put into the shielding cover 3 and the shell 4 together, and a high-temperature sealant is filled between the insulating sleeve 2 and the shell 4 for fixing and sealing. The housing 4 and the mounting flange 5 are welded after being positioned by the groove, and the mounting flange 5 and the outlet seat 6 are also positioned and welded by the groove.

[0022] The material of the thermocouple 1 is platinum rhodium 30-platinum rhodium 6. The insulating sleeve 2 is double-hole alumina ceramics, and the hole diameter is larger than that of the even wire. The shielding cover ...

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Abstract

The invention relates to an air-cooled high temperature sensor which is suitable for the measurement of high temperature air flow temperature below 1800 DEG C and has high temperature measurement accuracy, and belongs to the field of air flow temperature measurement in aviation and aerospace tests. The air-cooled high temperature sensor comprises a shell, a thermocouple, a shielding cover, an insulating sleeve, a mounting flange and an outlet seat. The connection relation is as follows: after the shielding cover is welded with the shell, the thermocouple penetrates into the insulating sleeve to be mounted together into the shielding cover and the shell, a high temperature sealant is filled between the insulating cover and the shell for fixing and sealing; and the shell and the mounting flange are positioned by a groove and then welded, and the mounting flange and the outlet seat are also positioned by a groove and then welded. The air-cooled temperature sensor has the advantages of simple and compact structure, easy processing, low production cost and convenient use and maintenance.

Description

technical field [0001] The invention relates to an air-cooled high-temperature temperature sensor, which is suitable for measuring the temperature of a high-temperature airflow below 1800 DEG C, has high temperature measurement accuracy, and belongs to the field of airflow temperature measurement such as aviation and aerospace tests. Background technique [0002] At present, the sensors used to measure the temperature of high-temperature air flow are divided into two types: dry burning type and cooling type. Most of the shells of dry-fired sensors are made of new composite materials, which have high processing and production costs and poor structural diversity; most of the shells of cooled sensors are made of ordinary metals, and most of them are cooled by water to reduce the temperature of the shell. The temperature of the outer shell, thereby increasing the service time of the sensor in the high temperature environment, the structure is relatively complicated, and the erro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/12
CPCG01K7/12
Inventor 李亚晋赵俭王毅荆卓寅
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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