Method for measuring concentration and temperature of high-temperature fuel gas of aero-engine

An aero-engine, temperature measurement technology, applied in the field of infrared spectrum analysis, to achieve the effect of reducing volume, weight and cost

Active Publication Date: 2021-06-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The invention solves the problem of simultaneously monitoring the concentration and temperature of high-temperature and high-pressure gas when the aero-engine is running

Method used

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  • Method for measuring concentration and temperature of high-temperature fuel gas of aero-engine
  • Method for measuring concentration and temperature of high-temperature fuel gas of aero-engine
  • Method for measuring concentration and temperature of high-temperature fuel gas of aero-engine

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Embodiment Construction

[0054] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0055]The object of the present invention is to provide a method for measuring gas concentration and temperature during the operation of an aero-engine. The method includes obtaining the infrared thermal radiation spectrum of high-temperature gas through an optical measurement probe, establishing a thermal radiation transfer model of gas inside the engine, and based on the characteristic peak The recognition learning algorithm establishes a high-temperature gas characteristic peak recognition model to determine the type of gas in the radiation spectrum after pretreatment, calculates the...

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Abstract

The invention belongs to the technical field of infrared spectrum analysis. An infrared spectrum separation algorithm of high-temperature and high-pressure gas spectrum transmittance distribution difference is adopted to extract radiation energy from turbine blades and radiation energy from high-temperature gas in a measurement spectrum in real time, by adopting a high-pressure and high-temperature correction algorithm of a gas transmittance spectrum, the temperature of the turbine blades and the concentration condition of each component of the high-temperature fuel gas are calculated according to the measured values, and real-time high-precision measurement of the temperature of the turbine blades and the concentration of the high-temperature fuel gas is achieved.

Description

technical field [0001] The invention belongs to the technical field of infrared spectrum analysis, and particularly relates to a method for measuring gas concentration and temperature during the operation of an aeroengine in real time by using a high-temperature optical probe and an infrared optical fiber spectrometer. Background technique [0002] With the development of the aviation industry, higher requirements are put forward for the performance of the engine thrust, specific gravity, etc., resulting in higher and higher outlet temperatures of the aero-engine combustion chamber. concentration and temperature parameters. Since the aero-engine combustor works in an extreme environment of high temperature and high pressure for a long time, the traditional thermocouple temperature measurement method needs to modify the engine, and there are few measurement points, which cannot fully reflect the temperature distribution of the turbine blade surface, etc., and cannot adapt to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504G01N21/59G01J5/00
CPCG01N21/3504G01N21/59G01J5/0014G01J5/80
Inventor 吕金光梁静秋赵莹泽郑凯丰王惟彪秦余欣陶金王超
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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