Round chaff type large-scale high-temperature heat flux sensor

Abstract

The invention relates to the field of heat flux measurement, in particular to a round chaff type large-scale high-temperature heat flux sensor. The invention solves the problems that the heat sinking body of the existing round chaff type heat flux sensor is difficult to realize constant temperature, and the like. The round chaff type large-scale high-temperature heat flux sensor comprises a shell with a bottom cover and a heat sinking body, wherein the heat sinking body is composed of a main body and a columnar boss arranged at the center of the top part of the main body, and the top part of the shell is provided with a through hole for inlaying the columnar boss of the top part of the heat sinking body. The columnar boss is inlaid with a round chaff, and the center and the edge of the round chaff are respectively inlaid with lead wires forming thermocouple with the round chaff. The columnar boss is externally sheathed with an adiabatic ring arranged between the main body of the heat sinking body and the shell, and the shell is composed of a tubular shell body and a ceramic top cover. Two disk-shaped ceramic supports are stacked between the bottom part of the main body of the heat sinking body and the bottom cover of the shell, and air adiabatic layers are respectively arranged between the two disk-shaped ceramic supports, between the top disk-shaped ceramic support and the bottom part of the heat sinking body and between the side wall of the main body of the heat sinking body and the inner wall of the shell. With reasonable and optimized structure, the round chaff type large-scale high-temperature heat flux sensor can work for a long time in the high-temperature environment to realize large-scale measurement.

Description

Technical field [0001] The invention relates to the field of heat flow measurement, in particular to a round foil type large-range high-temperature heat flow sensor. Background technique [0002] The existing round foil type heat flow sensor, also known as the Gardon type heat flow sensor, its sensitive head consists of a constantan round foil embedded on the heat sink, and two metal leads welded to the center and the edge of the constantan round foil respectively Composition, in which the constantan round foil and the metal lead form a thermocouple. [0003] When the radiant heat flow is uniformly incident on the surface of the constantan round foil, the heat flow is transferred to the heat sink through the round foil along its radial direction, and a temperature difference is formed between the center and the edge of the round foil, thereby generating thermoelectric potential output . When the temperature of the heat sink body is constant, the incident heat flow is proportional...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the heat sink body of the existing circular foil heat flow sensor is difficult to achieve constant temperature, cannot meet the requirements of long-term work in a high temperature environment, and cannot realize large-range measurement, etc., the present invention provides a circular foil-type large-range sensor. High temperature heat flow sensor

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