A method for measuring air intake flow rate of aeroengine and gas turbine
A technology for aero-engines and gas turbines, which is used in 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: 2021-11-16
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
Method used
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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 air intake flow rate of aero-engines and gas turbines, including: data measurement, element balance analysis; and calculation of inlet air flow rate, wherein the data measurement includes: measuring the concentration of intake air components in the experimental environment of the complete machine; measuring hydrocarbons Molecular constant of the fuel; measure the concentration of smoke components in the whole machine experiment; measure the fuel flow in the experiment. A method for measuring the air intake flow rate of aero-engines and gas turbines proposed by the present invention only needs to measure the 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 real-time parameter measurement of the experimental flow of the aero-engine and gas turbine can be realized, so as to ensure the monitoring of parameters during the test run of the whole machine, and verify 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