High-sensitivity integrated construction method of thermocouple transient heat flow sensor

Abstract

The invention discloses a high-sensitivity integrated construction method of a thermocouple transient heat flow sensor, which includes preparing a first metal wire core and a second metal wire core, and forming a plurality of The electrical connection joints of the first metal core or the second metal core connect the electrical connections belonging to the same plane on the multiple first metal cores together to form an electrical connection platform, and connect the multiple first metal cores The electrical joints of the two metal wire cores are adaptively embedded in the joints of the electrical connection platforms of the first metal wire cores to form a multi-core wire; The shrinkage of the double-layer nickel-chromium tube fixes the multi-core wire; the ring-shaped external contact measurement point is set on the surface of the double-layer nickel-chromium tube and the electrical connection platform, and the electrical connection platform composed of multiple electrical joints is used for measurement. The measurement point can increase the capture amount of the induced current at the measurement point, thereby improving the sensitivity and output voltage, and reducing the influence of noise.

Description

technical field [0001] The invention relates to the technical field of heat flow sensors, in particular to a high-sensitivity integrated construction method of a thermocouple transient heat flow sensor. Background technique [0002] The heat flow sensor is a basic tool for measuring heat transfer (heat flux density or heat flux), and is the most critical component of a heat flow meter. The performance and use of the heat flow sensor determine the performance and use of the heat flow meter. [0003] The coaxial thermocouple transient heat flow sensor is an experimental component that uses the Seebeck effect of different electrode materials to form an electromotive force under different temperature gradients and measure it, and then inverts the temperature and heat flow. It is mainly used in aerospace hypersonic aircraft aerodynamics Experiments, hypersonic flow related experiments, etc., have the characteristics of fast response, large measurement range, high precision, and ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-sensitivity integrated construction method of a thermocouple transient heat flow sensor, through multiple measurement nodes and the positive and negative poles of multi-core cores connected in series, the sensitivity and output voltage are improved, and the influence of noise is reduced to solve the problems in the prior art. The technical problem that the input voltage of a single heat flow sensor is easily affected, thereby reducing the measurement accuracy

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