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Guide rod type acoustic grating pyrometer

A pyrometer and guide rod technology, used in thermometers, thermometers with physical/chemical changes, measuring devices, etc., can solve problems such as poor accuracy and low measurement upper limit, and achieve improved accuracy, high temperature resistance, and extended use. effect of life

Inactive Publication Date: 2019-07-23
BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low measurement upper limit and poor accuracy of the current temperature measurement method, the technical problem to be solved by the guide rod type acoustic grid pyrometer disclosed in the present invention is: to provide a temperature sensor suitable for high temperature gases, liquids and plasmas below 3000°C The guide rod type acoustic grid pyrometer for temperature field measurement can improve the upper limit and accuracy of measurement

Method used

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  • Guide rod type acoustic grating pyrometer
  • Guide rod type acoustic grating pyrometer

Examples

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Embodiment 1

[0025] Such as figure 1 As shown, the guide rod type acoustic grid pyrometer disclosed in this embodiment includes a guide rod 1 , a sensor 3 , a buffer 2 and an electronic device 4 . Both the guide rod 1 and the buffer 2 and the buffer 2 and the sensor 3 are connected by welding, and the guide rod 1, the buffer 2 and the sensor 3 are guaranteed to be coaxial during welding.

[0026] This embodiment is suitable for the measured medium in an oxidizing environment. The guide rod 1 is made of precious metal iridium. In order to improve the comprehensive mechanical properties of the guide rod 1, the iridium guide rod 1 should be subjected to pressure processing such as forging or rolling.

[0027] The guide rod 1 is a cylinder with a diameter of Φ5mm and a length of 50mm. Five acoustic gratings are arranged along the axial direction of the guide rod 1, and the distance between two adjacent acoustic gratings is 5mm. The axial section of the acoustic grating is a chamfered isoscel...

Embodiment 2

[0033] The guide rod 1 type acoustic grid pyrometer disclosed in this embodiment includes a guide rod 1 , a sensor 3 , a buffer 2 and an electronic device 4 . Both the guide rod 1 and the buffer 2 and the buffer 2 and the sensor 3 are connected by welding, and the guide rod 1, the buffer 2 and the sensor 3 are guaranteed to be coaxial during welding.

[0034] This embodiment is suitable for the measured medium in a reducing or neutral environment, and the guide rod 1 is made of tungsten, a refractory metal material.

[0035] The material of the buffer 2 is molybdenum, and it is welded with the guide rod 1 by vacuum electron beam. The cone angle of the buffer 2 is 22°.

[0036] The guide rod 1 is a cylinder with a diameter of Φ5mm and a length of 50mm. Five acoustic gratings are arranged along the axial direction of the guide rod 1, and the distance between two adjacent acoustic gratings is 5mm. The axial section of the acoustic grating is a chamfered isosceles triangle, the ...

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Abstract

The invention discloses a guide rod type acoustic grating pyrometer, and belongs to the field of thermometers used for high-temperature measurement. The guide rod type acoustic grating pyrometer comprises a guide rod, a sensor, a buffer and electronic equipment. When the guide rod type acoustic grating pyrometer is used in an oxidation environment, the temperature measurement upper limit of the guide rod type acoustic grating pyrometer is 2100DEG C, and when the guide rod type acoustic grating pyrometer is used in a reductive or neutral environment, the temperature upper limit of the guide rodtype acoustic grating pyrometer is 3000DEG C. A high-temperature-resistant metal material is used as a guide rod and forms a pyrometer system with the buffer, the sensor and the electronic equipment,and the propagation speed of the reflection sound wave of the guide rod type acoustic grating is measured to convert a temperature so as to achieve a purpose of temperature measurement. The high-temperature-resistant metal material is used as the guide rod to improve the temperature measurement upper limit. Meanwhile, since the diameter or the equivalent diameter of the guide rod is large, the pyrometer is more durable than a thermocouple with a small diameter, and the service life of the pyrometer is prolonged. The guide rod is adopted, so that the sound wave is propagated in the guide rod,a bending effect is not in the presence, and the accuracy of a temperature measurement result is improved.

Description

technical field [0001] The invention belongs to the field of thermometers for high-temperature measurement, and relates to a guide rod-type acoustic grid pyrometer suitable for measuring the temperature field of high-temperature gases, liquids and plasmas below 3000°C. Background technique [0002] At present, the most commonly used method for measuring high temperature is to use a high temperature sensor based on a thermocouple, and the highest temperature that can be measured is 1700°C. Due to the limitations of the dual wire and the shell material, the upper limit of the measured temperature is low, and the measurement accuracy is poor. Based on the non-contact temperature measurement of the acoustic method, several acoustic emission / reception probes are arranged on the edge of the measured temperature field, and the temperature field is inverted by the propagation speed of the sound wave in the measured medium. Because the probe is not immersed in the measured medium, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/24
CPCG01K11/24
Inventor 赵俭常蕾
Owner BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
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