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Temperature measurement system based on ysz:re fluorescence lifetime measurement and its test method and application

A technology of temperature measurement and fluorescence lifetime, applied in the direction of measuring heat, thermometers and thermometers with physical/chemical changes, etc., can solve the problem of low measurement temperature, and achieve high temperature accuracy, wide measurement temperature range, and good stability.

Active Publication Date: 2019-09-27
SHANGHAI JIAOTONG 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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  • Temperature measurement system based on ysz:re fluorescence lifetime measurement and its test method and application
  • Temperature measurement system based on ysz:re fluorescence lifetime measurement and its test method and application
  • Temperature measurement system based on ysz:re fluorescence lifetime measurement and its test method and application

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Embodiment 1

[0052] Such as Figure 1-2 As shown, the temperature measurement system based on YSZ: Re fluorescence lifetime measurement includes a signal transmitter 1, a UV-LED ultraviolet light source electrically connected to the signal transmitter 1, a temperature measurement probe 3, and a 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 turn, and a temperature measurement probe The surface of 3 is sprayed with YSZ:Re fluorescent layer 8, and is connected to UV-LED ultraviolet light source 2 and filter 4 through optical fiber 9;

[0053] Among them, the temperature measuring probe 3 is a single crystal alumina temperature measuring probe coated with a YSZ:Re phosphor layer 8 by plasma spraying. The chemical formula of YSZ:Re in YSZ...

Embodiment 2

[0073] Firstly, the YSZ:Dy powder (with a particle size of 60μm) was prepared by the reverse co-precipitation method, and then the single crystal alumina was cleaned and sandblasted. The 10 μm YSZ:Dy phosphor layer 8 is prepared by plasma spraying technology. Spraying parameters: spraying current is 400A, voltage is 150V, Ar flow 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 delivery rate is 5g / min. The single crystal alumina sprayed on the YSZ:Dy phosphor 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 turns a continuous light source into a pulsed light source with a pulse width of 1 ms and a pulse period of 100 ms. A channel that connects a 550nm high-pass filter, a 600nm low-pass filter, a resistance box 6, an oscilloscope 7, and connects the...

Embodiment 3

[0077] Firstly, YSZ:Eu powder (with a particle size of 80μm) was prepared by the sol-gel liquid phase method, and then the single crystal alumina was cleaned and sandblasted. The 10 μm YSZ:Eu phosphor layer 8 is prepared by plasma spraying technology. Spraying parameters: spraying current is 400A, voltage is 150V, Ar flow 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 delivery rate is 5g / min. The single crystal alumina sprayed on the YSZ:Eu phosphor 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 turns a continuous light source into a pulsed light source with a pulse width of 1 ms and a pulse period of 100 ms. A channel that connects a 570nm high-pass filter, a 625nm low-pass filter, a resistance box 6, an oscilloscope 7, and connects the signal ...

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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 and a test method and application thereof. Background technique [0002] In the prior art, the known methods for measuring the temperature of aero engines, gas turbines and other high-temperature applications are mainly based on the temperature dependence of resistance, thermoelectric effect (thermocouple), color rendering, sound velocity in gas, and scattering Or the spectral distribution of the electromagnetic heat radiation emitted. The temperature measurement used for aero engines and 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 separate the measurement components from the high temperature and ...

Claims

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Application Information

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Patent Type & Authority Patents(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 JIAOTONG UNIV
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