Engine thermal protection structure temperature field multi-mode measuring system

A heat protection structure and measurement system technology, applied in the direction of measuring devices, optical radiation measurement, radiation pyrometry, etc., can solve the problems of direct measurement of temperature field that is not suitable for high-speed changes, time-consuming, etc., to improve measurement accuracy, The effect of overcoming distracting factors

Active Publication Date: 2015-03-25
BEIJING ZHENXING METROLOGY & TEST INST
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Problems solved by technology

However, the multi-wavelength temperature measurement method takes a long time and is not suitable for direct measurement of the rapidly changing temperature field.

Method used

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  • Engine thermal protection structure temperature field multi-mode measuring system
  • Engine thermal protection structure temperature field multi-mode measuring system
  • Engine thermal protection structure temperature field multi-mode measuring system

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Embodiment Construction

[0026] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention.

[0027] figure 1 The structure of the multi-mode measurement system for the engine thermal protection structure temperature field. The multi-mode measurement system for the temperature field of the thermal protection structure of the engine includes a standard radiation source, a radiation temperature measurement and sensing system, a three-dimensional turntable, an on-site control system and a remote comprehensive control system.

[0028] The targets to be tested generally include the engine thermal protection structure, the inner wall and outer wall of the tail nozzle, etc.

[0029] The light emitted by the measured object and the standard radiation s...

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Abstract

The invention relates to an engine thermal protection structure temperature field multi-mode measuring system which comprises a standard radiation source, a radiation temperature measurement sensing system, a three-dimensional rotary table, a field control system and a remote comprehensive control system. Light rays emitted by a measured target and the standard radiation source are detected by the radiation temperature measurement sensing system and form measurement data, the measurement data are transmitted into the remote comprehensive control system by the field control system, and the three-dimensional rotary table is used for adjusting the pitch angle and the azimuth angle of the radiation temperature measurement sensing system. The standard radiation source serves as a real-time correction source and used for providing standard radiation of corresponding measurement wavebands, and the temperature field of the measured target is corrected by quantitatively analyzing the light radiation attenuation rates of the standard radiation source at different wavebands and wavelengths. The radiation temperature measurement sensing system comprises an infrared broadband temperature field measurement device and a visible light and infrared band color comparison and multi-wavelength temperature field measurement device, and the temperature of the measured object is determined according to measurement values obtained through the infrared broadband temperature field measurement device and the visible light and infrared band color comparison and multi-wavelength temperature field measurement device.

Description

technical field [0001] The invention relates to a temperature measurement system, in particular to a multi-mode measurement system for the temperature field of an engine thermal protection structure. Background technique [0002] For the measurement of the temperature field of the thermal protection structure of the engine, the prior art mainly adopts a contact measurement method and an optical non-contact measurement method. Among them, the contact measurement method uses contact temperature sensors such as thermocouples. Due to its shortcomings such as low temperature measurement upper limit, poor dynamic response characteristics, and interference with the measured target, it cannot well meet the temperature measurement requirements of the engine thermal protection structure. Therefore, optical non-contact temperature measurement (also known as radiation temperature measurement) is widely used in engine tests, and its measurement schemes mainly include: band integration an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/52
Inventor 邱超孙红胜张玉国杨旺林任小婉
Owner BEIJING ZHENXING METROLOGY & TEST INST
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