Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for Measuring Temperature Uniformity of High Temperature Surface Using Standard Radiation Thermometer

A standard radiation and surface temperature technology, applied in radiation pyrometry, optical radiation measurement, measuring devices, etc., can solve problems such as inability to uniform surface temperature, lack of surface thermometers, etc., and achieve good results and consistency of experimental data Effect

Active Publication Date: 2016-01-27
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for measuring the temperature uniformity of high-temperature surfaces by using a standard radiation thermometer, which is used for measuring the temperature uniformity of high-temperature surfaces, and solves the problem of surface temperature uniformity that cannot be measured without a surface thermometer above 500°C difficult problems, but also for many situations where surface temperature uniformity measurement is not easy to measure by contact thermometry

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for Measuring Temperature Uniformity of High Temperature Surface Using Standard Radiation Thermometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The method for measuring the temperature uniformity of a high-temperature surface by using a standard radiation thermometer according to the present invention includes the following steps:

[0017] (1) Spray black paint with an emissivity greater than 0.88 on the surface of the object to be tested (for example: the black high emissivity paint from OMP, Italy), and the thickness of the coating should be controlled at 0.1mm;

[0018] (2) After the paint described in step (1) is dried, heat the measured object to 1000°C, keep the temperature for 30 minutes, and measure the paint with a spectral emissivity measuring instrument (for example: ET100 spectral emissivity measuring instrument from ET Company, USA) The emissivity data ε, the accuracy of measuring emissivity <0.01;

[0019] (3) After the measurement in step (2) is stable for 10 minutes, use a standard radiation thermometer with adjustable emissivity parameters (for example: the LP5 standard radiation thermometer of the Un...

Embodiment 2

[0023] The method for measuring the temperature uniformity of a high-temperature surface by using a standard radiation thermometer according to the present invention includes the following steps:

[0024] (1) Spray a black paint with an emissivity of 0.9 on the surface of the tested object (for example: the black high-emissivity paint from OMP, Italy), and the thickness of the coating should be controlled at 0.7mm;

[0025] (2) After the paint described in step (1) is dried, heat the object to be tested to 650℃, keep the temperature for 40 minutes, and measure the paint with a spectral emissivity measuring instrument (for example: ET100 spectral emissivity measuring instrument from ET Company in the United States) The emissivity data ε, the accuracy of measuring emissivity <0.01;

[0026] (3) After the step (2) is measured, it is stable for 15 minutes, and a standard radiation thermometer with adjustable emissivity parameters (for example: LP5 standard radiation thermometer from the ...

Embodiment 3

[0029] The method for measuring the temperature uniformity of a high-temperature surface by using a standard radiation thermometer according to the present invention includes the following steps:

[0030] (1) Spray black paint with an emissivity greater than 0.88 on the surface of the object to be tested (for example: the black high emissivity paint from OMP, Italy), and the thickness of the coating should be controlled at 0.1mm;

[0031] (2) After the paint described in step (1) is dried, heat the measured object to 500°C, keep the temperature for 35 minutes, and measure the paint with a spectral emissivity measuring instrument (for example: ET100 spectral emissivity measuring instrument from ET Company in the United States) The emissivity data ε, the accuracy of measuring emissivity <0.01;

[0032] (3) After the measurement in step (2) is stable for 10 minutes, use a standard radiation thermometer with adjustable emissivity parameters (for example: the LP5 standard radiation thermo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for measuring high-temperature surface temperature uniformity by utilizing a standard radiation thermometer. According to the method, a black coating with the emissivity larger than 0.88 is sprayed on the surface of an object to be measured, after the coating is dried, the objected to be measured is heated to 500-1000 DEG C, and then a spectral emissivity measuring instrument is adopted to measure emissivity data epsilon of the coating. The standard radiation thermometer with adjustable emissivity parameters is adopted for measurement, before measurement, the emissivity parameter of the standard radiation thermometer is adjusted to epsilon, 5-9 positions are selected on the surface of the object to be measured, temperature values T1-T5 of the positions are measured respectively, the maximum temperature value is recorded as Tmax, the minimum temperature value is recorded as Tmin, and the computed temperature uniformity of the surface of the object to be measured is Tmax-Tmin. With the method, the surface temperature uniformity of a high-temperature surface with the temperatures higher than 500 DEG C can be measured, and reliable parameters can be provided for application like surface temperature measurement of engines, and stealth material infrared radiation characteristic measurement.

Description

Technical field [0001] The invention relates to the technical field of thermal measurement, in particular to a method for measuring the temperature uniformity of a high-temperature surface by using a standard radiation thermometer. Background technique [0002] The uniformity of high-temperature surface temperature is a characteristic parameter reflecting the temperature distribution of the surface of an object, and it is also an important characteristic in the field of thermal measurement. Many high-temperature measurement and testing tasks, including: engine surface temperature measurement; stealth material infrared radiation characteristics measurement, etc., all put forward requirements for the uniformity of the surface temperature of the measured object. Therefore, accurate measurement of high temperature surface temperature is very necessary. [0003] At present, the usual measurement method is to use a surface thermometer to measure temperature at multiple locations on the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/52
Inventor 张俊祺孙富韬王文革张晓菲赵化业
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH