Device and method for calibrating and measuring temperature of inner wall of thin-wall hollow circular tube

A technology of measuring devices and hollow circles, which is applied to measuring devices, thermometers, measuring heat, etc., can solve the problems that the fluid-solid coupling finite element simulation technology is difficult to obtain accurate results, and the cooling gas and the temperature measuring device do not interfere with each other, so as to eliminate The effect of evenly distributing the turbulence of the cooling gas and improving the measurement accuracy

Pending Publication Date: 2022-02-25
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems that the cooling gas inside the thin-walled hollow tube and the temperature measuring device do not interfere with each other and the fluid-solid coupling finite element simulation technology is difficult to obtain accurate results under high temperature conditions, and realize the Accurate measurement of wall temperature

Method used

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  • Device and method for calibrating and measuring temperature of inner wall of thin-wall hollow circular tube
  • Device and method for calibrating and measuring temperature of inner wall of thin-wall hollow circular tube
  • Device and method for calibrating and measuring temperature of inner wall of thin-wall hollow circular tube

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Embodiment 1

[0039] Embodiment 1, providing a thin-walled hollow tube inner wall temperature calibration measurement device, the thickness of the thin-walled hollow tube is ≤ 2mm, the calibration test piece is used in the calibration measurement method, and the center of the calibration test piece is a thin-walled hollow tube 100 , the two ends of the calibration test piece are round tube installation ends 101; the center of the calibration test piece is a continuous smooth hollow circular lumen 102; at least one round tube installation end has a temperature measurement hole 103, and the temperature measurement hole 103 is used For measuring the lumen temperature of the corresponding round tube installation end 101;

[0040] The thin-walled hollow tube 100 has a step through hole 104, the upper opening of the step through hole 104 is gradually expanding, and the shape of the upper opening is non-circular, and the step surface of the step through hole 104 has multiple a pin hole 105;

[00...

Embodiment 2

[0057] Embodiment 2, providing a thin-walled hollow tube inner wall temperature calibration measurement device, the thickness of the thin-walled hollow tube is ≤ 2mm, the calibration test piece is used in the calibration measurement method, and the center of the calibration test piece is a thin-walled hollow tube 100 , the two ends of the calibration test piece are round tube installation ends 101; the center of the calibration test piece is a continuous smooth hollow circular lumen 102; at least one round tube installation end has a temperature measurement hole 103, and the temperature measurement hole 103 is used For measuring the lumen temperature of the corresponding round tube installation end 101;

[0058] The thin-walled hollow tube 100 has a step through hole 104, the upper opening of the step through hole 104 is gradually expanding, and the shape of the upper opening is non-circular, and the step surface of the step through hole 104 has multiple a pin hole 105;

[00...

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Abstract

The invention relates to a device and method for calibrating and measuring the temperature of an inner wall of a thin-wall hollow circular tube, and belongs to the technical field of high-temperature mechanical property testing of high-temperature structural materials. The invention aims to solve the technical problem that internal cooling gas of the thin-wall hollow circular tube does not interfere with a temperature measuring device under a high-temperature condition, so that the temperature of the inner wall of the thin-wall hollow circular tube filled with the cooling gas can be accurately measured. Through assembly of a working thermocouple, a thermocouple cover plate, a positioning pin and a calibration thermocouple on a calibration test piece, a calibration test of introducing cooling gas under a high temperature condition is carried out, so that a temperature response contrast diagram of the calibration thermocouple and the working thermocouple is obtained. According to the test task requirement, the external application temperature and the inner wall temperature of the to-be-tested piece are determined, the temperature response comparison diagram of the corresponding calibration thermocouple and the working thermocouple is looked up, and a heating method with the specified temperature gradient can be achieved on the to-be-tested piece by controlling and finely adjusting the cooling gas pressure and the flow speed of an air compressor.

Description

technical field [0001] The invention relates to the technical field of high-temperature mechanical performance testing of high-temperature structural materials, and specifically provides a thin-walled hollow tube inner wall temperature calibration measurement device and a method thereof, which are suitable for comprehensive mechanical performance tests of aeroengine turbine component materials under temperature gradient conditions. Background technique [0002] The core components such as turbine blades and turbine disks of modern advanced aero-engines are usually cooled by gas cooling technology under their service conditions. The temperature reduction can effectively improve the working environment of turbine blades and turbine disks, improve the strength of turbine blades and turbine disks and prolong its service life. Gas cooling technology occupies a very important position in the development and production of high-performance aero-engines at home and abroad. In genera...

Claims

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Application Information

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IPC IPC(8): G01K1/14G01N3/02G01N3/18
CPCG01K1/14G01N3/02G01N3/18
Inventor 董成利洪健锋李兴无
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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