Extended thermocouple and high-temperature vacuum heating furnace

By designing an extended thermocouple, the problem of insufficient thermocouple measuring end length in high-temperature vacuum heating furnaces was solved, achieving higher measurement accuracy.

CN224175969UActive Publication Date: 2026-04-28JIANGSU IHI FENGDONG VACUUM TECH CO LTD
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Patent Information

Application Number
CN202520896100.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-07
Publication Date
2026-04-28
Estimated Expiration
2035-05-07

AI Technical Summary

Technical Problem

The thermocouple measuring ends of existing high-temperature vacuum heating furnaces are relatively short, resulting in rapid heat loss when the temperature is transmitted to the outside, which affects the accuracy of the measurement.

Method used

Design an extended thermocouple, including a sheath and thermocouple wire. The sheath consists of a straight section and a bent section. The bent section is equipped with a temperature measuring point. The thermocouple wire is laid along the straight section and the bent section to extend the length of the thermocouple. It is then fixed to a high-temperature vacuum heating furnace by a vacuum flange.

Benefits of technology

This reduces heat loss from the thermocouple measuring point to the external terminal, improves the accuracy of the measured temperature, and makes it closer to the actual temperature.

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Abstract

The utility model relates to the technical field of thermocouples, in particular to an extended thermocouple and a high-temperature vacuum heating furnace, and the extended thermocouple comprises a pipe sleeve and a thermocouple wire. The pipe sleeve comprises a straight section and a first bent section, the first bent section is arranged at one end of the straight section, and a temperature measuring point is arranged at the end point, deviating from the straight section, of the first bent section; and the thermocouple wire is arranged to the temperature measuring point along the straight section and the first bent section. The extended thermocouple and the high-temperature vacuum heating furnace provided by the utility model can effectively increase the length of the thermocouple wire in the temperature measurement container, thereby reducing the too fast heat loss from the temperature measurement point of the thermocouple to the external binding post, enabling the temperature measured by the temperature measurement point to be closer to the actual temperature, and improving the measurement precision of the measurement end of the thermocouple.
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