Radiant heating temperature sensor

A three-layer tubular protective cover for thermocouples allows non-contact measurement of radiant heating temperatures up to 1400K with minimal thermal interference, addressing the limitations of existing methods by using a heat-resistant ceramic housing and quartz glass vacuum flask for accurate, real-time temperature measurement.

RU2865278C1Active Publication Date: 2026-07-01AKTSIONERNOE OBSHCHESTVO OBNINSKOE NAUCHNO PROIZVODSTVENNOE PREDPRIJATIE TEKHNOLOGIJA IM A G ROMASHINA
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Patent Information

Application Number
RU2026100793
Authority / Receiving Office
RU · RU
Patent Type
Patents
Current Assignee / Owner
Filing Date
2026-01-16
Publication Date
2026-07-01
Estimated Expiration
2046-01-16

AI Technical Summary

Technical Problem

Existing non-contact temperature measurement methods are limited by the use of large, low-temperature radiation pyrometers and the difficulty of using thermocouples in close proximity to high-temperature sources, leading to measurement errors and inability to measure radiant heat flux effectively.

Method used

A three-layer tubular protective cover for a radiant heating temperature sensor, featuring a heat-resistant ceramic housing, quartz glass vacuum flask, and high-reflectivity coatings, which isolates the thermocouple from convective and conductive heat exchange, allowing non-contact measurement of temperatures up to 2000K with minimal thermal interference.

Benefits of technology

Enables direct, real-time measurement of radiant heating temperatures with high accuracy and minimal thermal interference, suitable for temperatures up to 1400K, while maintaining a compact design and reusability.

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Abstract

FIELD: thermometry.SUBSTANCE: invention relates to a non-contact method of measuring temperature by radiation. The proposed protective cover for a radiant heating temperature sensor consists of a protective housing made of heat-resistant ceramic material, inside which an insulating vacuum flask made of quartz glass with absolute transparency for electromagnetic radiation in the infrared and visible wavelength spectrum is fixed. The flask is fixed in the housing with an air gap. The housing and flask provide only radiant heat flow to the thermocouple, completely excluding conductive and convective heat exchange with the thermocouple. The thermocouple is located inside the flask and is secured to it on the current-carrying wires, which are soldered into the wall of the flask, ensuring the flask is hermetically sealed and the wires are insulated from each other; the wires in the wall of the outer housing are secured with heat-resistant adhesive. The outer housing comprises a replaceable cap with a cutout for supplying radiant heat flow to the thermocouple, and the size and position of the cutout determines the required solid angle and direction of viewing of the radiant heat flow.EFFECT: proposed protective cover for the temperature sensor allows for a significant increase in the accuracy of measuring the temperature of radiant heating due to a number of its advantages: providing a contactless method for measuring the temperature of radiant heating up to a temperature of 2000 K with a high heating rate, simple design and multiple use, small dimensions, ensuring local temperature measurement.1 cl, 1 dwg
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Citation Information

Patent Citations

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    RU161297U1

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    RU2206072C1

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    RU2822312C1

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    RU75037U1

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    SU147817A1