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A Probe Temperature Sensing Black Body Cavity for Sapphire Optical Fiber Temperature Sensor

A technology of optical fiber temperature and blackbody cavity, applied in thermometers, thermometers with physical/chemical changes, instruments, etc., can solve problems affecting temperature measurement accuracy and long-term stability, surface degradation, etc., and achieve stable radiation signal and temperature relationship, The effect of stable overall performance and stable emissivity

Active Publication Date: 2016-05-18
SHAANXI ELECTRICAL APPLIANCE RES INST
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the sapphire fiber is in a temperature environment above 1700°C, the surface will be degraded due to high temperature, which will affect the temperature measurement accuracy and long-term stability
Even after the relevant anti-deterioration treatment, the upper limit of the sapphire optical fiber temperature can only be increased to 1800°C, which results in the upper limit of the temperature measurement of the traditional sapphire optical fiber temperature sensor being limited to 1800°C

Method used

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  • A Probe Temperature Sensing Black Body Cavity for Sapphire Optical Fiber Temperature Sensor
  • A Probe Temperature Sensing Black Body Cavity for Sapphire Optical Fiber Temperature Sensor
  • A Probe Temperature Sensing Black Body Cavity for Sapphire Optical Fiber Temperature Sensor

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Embodiment Construction

[0020] like figure 1 , figure 2 As shown, the internal structure of the temperature-sensitive blackbody cavity 1 adopts a box-type structure. The bottom of the temperature-sensitive blackbody cavity 1 is hemispherical, and the upper end is cylindrical. Internal threads are processed at the mouth of the temperature-sensitive blackbody cavity; Circular light shield 2 for radiation adjustment hole 3.

[0021] The core of the present invention is a structural design of a separate temperature-sensitive blackbody cavity. Due to the design of the structure, when the blackbody cavity is in contact with a high-temperature environment, its blackbody radiation performance is more stable than that of a general-structured blackbody cavity, so it can be used in the blackbody cavity When it is separated from the optical fiber, it can still obtain a stable corresponding relationship between the radiation intensity of the black body and the temperature, and then realize the contact measureme...

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Abstract

The invention provides a probe temperature-sensing blackbody cavity for a sapphire optical fiber temperature sensor, wherein the inner structure of the temperature-sensing blackbody cavity adopts a box-type structure, the bottom of the temperature-sensing blackbody cavity is hemispherical, and the upper end is cylindrical. Internal threads are processed; the rear end of the temperature-sensitive blackbody cavity is provided with a circular light shield with radiation adjustment holes. The blackbody cavity of the present invention is made of zirconium boride ceramic material with a melting point higher than 3000°C. The characteristics of the radiation signal of the black body cavity are stable, and it is easy to be received and transmitted by the sapphire optical fiber, thereby ensuring the overall performance of the sensor is stable.

Description

technical field [0001] The invention belongs to the technical field of temperature measurement, and in particular relates to a probe temperature-sensing black body cavity of an improved sapphire optical fiber temperature sensor. Background technique [0002] The sapphire optical fiber temperature sensor is a kind of artificially constructed black body cavity in contact with the measured environment to achieve thermal equilibrium according to Planck's law, and then uses high temperature resistant sapphire optical fiber to transmit the thermal radiation of the high temperature black body cavity, measures the radiation signal and converts the temperature Numeric contact temperature sensor. [0003] The sapphire fiber temperature sensor utilizes the high melting point of the sapphire fiber and the good light transmission characteristics under high temperature conditions. The sputtering film method is used to construct a temperature-sensitive blackbody cavity at the end of the sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32
Inventor 袁玉华阎涛刘统春王超杰朱金薇
Owner SHAANXI ELECTRICAL APPLIANCE RES INST
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