Method for measuring air intake flow of aero-engine and gas turbine
A technology for aero-engines and gas turbines, which is applied to gas turbine devices, engine components, machines/engines, etc., and can solve the problems of difficult and inaccurate measurement of inlet pressure and inlet temperature, and difficulty in measuring intake air flow.
Active Publication Date: 2019-09-06
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
Due to its structural characteristics, it is generally radial air intake, that is, the air intake is the upper ring surface of the casing, and such an air intake mechanism makes it difficult to measure the inlet pressure and inlet temperature, especially during the test run of the whole machine
At the same time, it is generally difficult to measure the intake flow of aero-engines / gas turbines for field tests (without a complete machine test bench).
Therefore, a new measurement method is needed to realize the accurate measurement of the air intake flow rate of aero-engines and gas turbines, so as to make up for the problems of inaccurate and unmeasured
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0036] This method is based on the method of element balance. According to the fuel flow rate and the composition ratio of air and exhaust gas, according to the balance of element content in the import and export, that is, the sum of the content of each element in the air and the content of the elements in the fuel is equal to the content of the elements in the exhaust gas. Intake volume of air out. The method of measuring the air intake flow rate of aeroengine / gas turbine based on element balance only needs to measure the humidity and CO in the intake air 2 , O 2 and CO in the exhaust 2 , CO, C x h y , NO, NO 2 Combining the composition and flow rate of the fuel, the intake air flow can be quickly obtained, and the ...
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The invention discloses a method for measuring the air intake flow of an aero-engine and a gas turbine. The method comprises the steps of data measurement, elemental equilibrium analysis and calculation of inlet air flow, wherein the data measurement comprises the steps of measuring the air intake component concentration in the experimental environment of a complete machine; measuring the molecular constants of a hydrocarbon fuel; measuring the component concentration of flue gas in a whole machine experiment; and measuring the flue flow in the experiment. The method for measuring the air intake flow of the aero-engine and the gas turbine only needs to measure the concentration of CO2 and O2 in intake air and CO2, CO, C*Hy, NO and NO2 in exhaust air, can obtain the air intake flow quicklyby combining the components and flow of fuel, realizes real-time parameter measurement of experimental flow of the whole machine of the aero-engine and the gas turbine, ensures the monitoring of parameters in the test run process of the whole machine, and verifies the design and matching scheme of the whole machine.
Description
technical field [0001] The invention relates to the field of aeroengines and gas turbines, in particular to a method for measuring the air intake flow rate of aeroengines and gas turbines. Background technique [0002] As an important parameter in the design and experiment of aero-engine and gas turbine, the air flow has an important influence on the performance of the engine, so it becomes an indispensable measurement parameter in the component and complete machine verification experiment. On the test bench of aero-engines and gas turbines, the inlet flow rate is generally calculated by measuring the inlet temperature and inlet pressure of the compressor. [0003] Centrifugal compressors have the advantages of flat characteristics, simple structure, and good manufacturability, and are often used in small and medium-thrust aero-engines and small gas turbines. Due to its structural characteristics, it is generally radial air intake, that is, the air intake is the upper ring ...
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IPC IPC(8): F01D21/00F02C7/00F02C9/00
CPCF01D21/003F02C7/00F02C9/00
Inventor 王少林尹钊张华良谢鹏福孙文超谭春青
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI