Method for installing thermocouple on inner wall of housing body of high temperature container

Abstract

The invention provides a method for installing a thermocouple on the inner wall of a housing body of a high temperature container. The method comprises following steps of forming a groove in the inner wall of the housing body of the high temperature container, wherein the groove comprises a first groove part and a second groove part; heating the surrounding place of the first groove part to preset temperature; placing a thermocouple into the groove, wherein the sensing part of the thermocouple is arranged in the first groove part and a wire connection part electrically connected with the sensing part is arranged in the second groove part; placing brazing materials in the molten state in the first groove part; cooling and solidifying the brazing materials to form a brazing heat conducting block so as to allow the brazing heat conducting block to connect the sensing part of the thermocouple and the wall face of the first groove part; grinding the brazing heat conducting block so as to align the outer surface of the brazing heat conducting block to the inner wall face of the housing body; and fixing a fixed press sheet on a part corresponding to the wire connection part in the second groove part. According to the invention, by use of the thermocouple, temperature of the inner wall face of the container can be quickly, accurately and highly precisely measured; and original flowing states of fluid in the container are not affected.

Description

technical field [0001] The invention relates to a high-temperature container, and more specifically, relates to a method for installing miniature thermocouples on the inner wall of the casing of the high-temperature container. Background technique [0002] In order to accurately measure the temperature of the inner wall of the high-temperature container, it is necessary to minimize the temperature measurement response time of the temperature measuring device and the influence of the temperature measuring device on the fluid flow field of the inner wall of the container. For this reason, it is necessary to install ultra-fine armored thermocouples on the inner wall of the high-temperature container. The installation process must ensure the smoothness of the inner wall of the temperature measurement place, without affecting the flow and temperature distribution of the fluid in the high-temperature container. Robust temperature measuring thermocouples are required to achieve tem...

AI Technical Summary

Problems solved by technology

Due to the existence of the heat collecting block, the fluid flow in the temperature measurement area of ​​the inner wall of the container is affected, so that the measuring device itself affects the local flow of the fluid in the container, and it is impossible to measure the inner wall temperature more realistically.

Furthermore, due to the heat storage of the heat collecting block and other reasons, the response time of the thermocouple temperature measurement will increase, which will affect the accuracy and effect of the transient wall temperature measurement.

In addition, the thermocouple is welded to the heat collecting block by means of laser welding, etc., the instantaneous temperature of the welding process is high, the damage rate of the ultra-fine thermocouple is high during the welding process, and the operation feasibility of the ultra-fine thermocouple is very low

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