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YSZ: Re fluorescence lifetime measurement-based temperature measurement system, test method thereof and application thereof

A technology of temperature measurement and fluorescence lifetime, which is applied in the direction of measuring heat, thermometers with physical/chemical changes, thermometers, etc., can solve the problem of low temperature measurement, achieve high temperature accuracy, good application prospects, and good flexibility

Active Publication Date: 2017-04-19
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is exactly to provide a kind of testing precision high in order to overcome the defective that above-mentioned prior art exists, and economical practicality is good, and service life is long, the temperature measuring system based on YSZ:Re fluorescence lifetime measurement of stable performance and its testing method and application , to solve the defects of low measurement temperature in the temperature measurement of aero-engine and other high-temperature applications in the prior art

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  • YSZ: Re fluorescence lifetime measurement-based temperature measurement system, test method thereof and application thereof
  • YSZ: Re fluorescence lifetime measurement-based temperature measurement system, test method thereof and application thereof
  • YSZ: Re fluorescence lifetime measurement-based temperature measurement system, test method thereof and application thereof

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Embodiment 1

[0052] Such as Figure 1-2 Shown, based on the temperature measurement system of YSZ:Re fluorescence lifetime measurement, this temperature measurement system comprises signal transmitter 1, the UV-LED ultraviolet light source 2 that is electrically connected with signal transmitter 1, temperature measurement probe 3 and temperature measurement probe The temperature signal processing unit used in conjunction with the needle 3, the temperature signal processing unit includes a filter 4, a photomultiplier tube detector 5, a resistance box 6 and an oscilloscope 7 electrically connected to the photomultiplier tube detector 5 in sequence, and a temperature measurement probe The surface of 3 is sprayed with YSZ:Re fluorescent layer 8, and is connected with UV-LED ultraviolet light source 2, optical filter 4 respectively through optical fiber 9;

[0053] Wherein, the temperature measuring probe 3 is a single crystal aluminum oxide temperature measuring probe whose surface is plasma s...

Embodiment 2

[0073] Firstly, YSZ:Dy powder (with a particle size of 60 μm) was prepared by the reverse co-precipitation method, and then the single crystal alumina was cleaned and sandblasted. A 10 μm YSZ:Dy fluorescent layer 8 was prepared by plasma spraying technology. Spraying parameters: spraying current is 400A, voltage is 150V, Ar flow rate is 45L / min, H 2 The flow rate is 45L / min, the distance between the spray gun and the substrate is 150mm, and the powder feeding rate is 5g / min. The single crystal alumina sprayed with YSZ:Dy fluorescent layer 8 is connected to the optical fiber 9 and divided into two outputs. One is connected to a UV-LED ultraviolet light source 2 with a wavelength of 355nm and a signal transmitter 1. The signal transmitter 1 changes the continuous light source into a pulsed light source with a pulse width of 1ms and a pulse period of 100ms. One connects the 550nm high-pass filter, the 600nm low-pass filter, the resistance box 6, the oscilloscope 7, and connects...

Embodiment 3

[0077] Firstly, YSZ:Eu powder (with a particle size of 80 μm) was prepared by the sol-gel liquid phase method, and then the single crystal alumina was cleaned and sandblasted. A 10 μm YSZ:Eu phosphor layer 8 was prepared by plasma spraying technology. Spraying parameters: spraying current is 400A, voltage is 150V, Ar flow rate is 60L / min, H 2 The flow rate is 20L / min, the distance between the spray gun and the substrate is 150mm, and the powder feeding rate is 5g / min. The single crystal alumina sprayed with YSZ:Eu fluorescent layer 8 is connected to the optical fiber 9 and divided into two outputs. One is connected to a UV-LED ultraviolet light source 2 with a wavelength of 385nm and a signal transmitter 1. The signal transmitter 1 changes the continuous light source into a pulsed light source with a pulse width of 1ms and a pulse period of 100ms. One connects the 570nm high-pass filter, the 625nm low-pass filter, the resistance box 6, the oscilloscope 7, and connects the si...

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Abstract

The invention relates to a YSZ: Re fluorescence lifetime measurement-based temperature measurement system, a test method thereof and the application thereof. The temperature measurement system comprises a signal transmitter, a UV-LED ultraviolet light source electrically connected with the signal transmitter, a temperature measurement probe and a temperature signal processing unit matched with the temperature measurement probe. The temperature signal processing unit comprises an optical filter, a photomultiplier tube detector, a resistance box and an oscilloscope, wherein the resistance box and the oscilloscope are sequentially and electrically connected with the photomultiplier tube detector. The surface of the temperature measurement probe is sprayed with a YSZ: Re fluorescent layer and is respectively connected with the UV-LED ultraviolet light source and the optical filter through optical fibers. The temperature measurement system is used for measuring the temperature of an aircraft engine or a ground gas turbine temperature in the working state. Compared with the prior art, the measurement temperature can be high up to 500-1200 DEG C and the temperature accuracy is high. Through changing the shape of the temperature measurement probe, the temperature measurement probe can be applied to the temperature measurement under different environments. Meanwhile, the temperature field is not affected. The advantages of high temperature accuracy and wide application range are realized.

Description

technical field [0001] The invention belongs to the technical field of inorganic optical materials, and relates to a temperature measurement system based on YSZ:Re fluorescence lifetime measurement, a testing method and an application thereof. Background technique [0002] Methods known in the prior art for measuring the temperature of aero-engines, gas turbines and other high-temperature applications are based on the principle of temperature dependence on electrical resistance, thermoelectric effects (thermocouples), color projection, sound velocity in gases, scattering Or the spectral distribution of the emitted electromagnetic heat radiation, etc. Temperature measurement for aero-engines, gas turbines must withstand extremely high temperatures. In practical applications, traditional thermocouples will age rapidly under such harsh conditions, and their service life will be greatly shortened. Radiation thermometers can isolate the measurement part from the high temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/00
Inventor 杨丽霞赵晓峰郭芳威彭迪刘应征周新义肖平
Owner SHANGHAI JIAO TONG UNIV
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