Performance adjustment method of turbofan engine
A technology of turbofan engine and adjustment method, which is applied in the direction of internal combustion engine testing, etc., can solve the problems of long troubleshooting period and large damage to engine parts, and achieve the effect of short troubleshooting period and improved engine performance
Active Publication Date: 2022-01-04
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0004] The performance adjustment method of the turbofan engine provided by the present invention adopts the in-situ adjustment technology of the performance of the bench engine to solve the existing problem that when the performance of the engine is unqualified, the engine needs to be disassembled and reassembled, resulting in damage to the engine parts Large technical problems with long troubleshooting period
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[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered below.
[0026] figure 1 is a schematic structural view of a turbofan engine in a preferred embodiment of the present invention; figure 2 It is a schematic diagram of the assembly structure of the working nozzle of the preferred embodiment of the present invention; image 3 It is a schematic diagram of the assembly structure of the temperature measuring device of the preferred embodiment of the present invention; Figure 4 It is a flow chart of the turbofan engine overall performance adjustment method in the preferred embodiment of the present invention; Figure 5 It is a flowchart of a method for adjusting the overall performance of a turbofan engine according to another preferred embodiment of the present invention.
[0027] Such as Figure 4 As shown, the turbofan ...
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The invention discloses a method for adjusting the overall performance of a turbofan engine, which includes the following steps: S101, when the engine performance parameters are unqualified, obtain the total value of the working flow of each fuel nozzle group and the temperature detector corresponding to the fuel nozzle group Measured exhaust gas temperature value; S102, judging whether the total value of the working flow of the fuel nozzle group and the exhaust gas temperature value measured by the temperature detector corresponding to the fuel nozzle group have a linear correlation; S103, when there is a linear correlation, obtain the exhaust gas The fuel nozzle group corresponding to the temperature detector with the largest air temperature value is the first target correction nozzle group, and the total value of the working flow of the first target correction nozzle group is reduced; S104, re-detect the engine performance parameters until the engine performance parameters are qualified. In the performance adjustment method of the turbofan engine of the present invention, the fuel nozzle group is partially decomposed directly on the test bench without the engine being off the platform, so as to improve the engine performance so that the engine performance meets the requirements.
Description
technical field [0001] The invention relates to the technical field of aero-engine testing, in particular to a method for adjusting the overall performance of a turbofan engine. Background technique [0002] Overall performance is an important technical indicator of aero-engines. At present, when the performance of the test engine is unqualified, the engine is taken off the platform, the engine is disassembled, the cause is found and analyzed, troubleshooting measures are formulated, and then assembly and test run are carried out to finally pass the test. [0003] In the prior art, when the performance of the engine is unqualified, the troubleshooting process adopted is: complete machine disassembly, troubleshooting and reassembly. For engines whose performance is difficult to adjust, it is necessary to repair or replace parts, match and adjust the area of the guide, test run verification and multiple troubleshooting. The implementation period of the entire performance tr...
Claims
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IPC IPC(8): G01M15/05
CPCG01M15/05
Inventor 陈凯谢国宏李文胜曾振旋易海刘萌张旺冯鑫尹世贤夏华腾王超雷远波熊炳文
Owner CHINA HANGFA SOUTH IND CO LTD