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Study of the Computer Measurement and Control System of Single Nozzle Flow Tester

Author: WangXiuMei
Tutor: WangYeMu
School: Shenyang University of Technology
Course: Mechanical and Electronic Engineering
Keywords: Nozzle Flow test Image Recognition Spray angle Unevenness
CLC: TP273.5
Type: Master's thesis
Year: 2009
Downloads: 46
Quote: 0
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Abstract


Aero engine fuel nozzle is used as one of the key components of the engine , the atomization characteristics directly affects the fuel in the combustion chamber is atomized and evaporated , blending and the combustion process , and decides the distribution of the fuel in the combustion space . The comprehensive detection and analysis of the performance of the nozzle is necessary to put into use before , which requires a dedicated device for detecting this , the working performance of the equipment , the detection accuracy and the detection efficiency will directly affect the detection of the engine nozzle quality. Single nozzle flow tester is designed to specifically detect nozzle spray characteristics of non-standard equipment . This paper studies the work are as follows : ( 1 ) According to the research content of the paper , introduced the calculation of measurement and control system characteristics , composition and Research ; analysis of the development and research status of the engine fuel nozzles . (2) elaborated the basic function of the fuel flow test , set up a test hardware and software structure ; monitoring and control system works and the way to achieve , given the structure of a flow chart of a measurement and control system . (3 ) for image processing technology to analyze the general process of computer digital image processing , the commonly used method of image processing ; draw the image processing flow chart , write the image recognition and measurement and control system software . ( 4 ) gives the definition of the nozzle the atomization cone angle and nozzle flow nonuniformity and detection methods , the analysis of the the nozzle test system pressure and flow characteristics . By the combination of the measurement and control system and image processing technology , the different temperature , pressure , and nozzle weeks to the characteristics of the spray angle and unevenness in the corner under the conditions , obtained the nozzle atomization characteristics curve under different conditions . Single nozzle flow test measurement and control system development , analysis , monitoring and control system requirements , and build the structure of a the tester measurement and control system hardware and software , and the completion of a measurement and control system software development , the flow characteristics of the engine fuel nozzles test to prove that the flow test measurement and control system is stable and reliable performance . The same time , according to the test results obtained nozzle spray angle and unevenness characteristics under different conditions , and many ways to explain the factors that affect the characteristics of the nozzle atomization .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system > Computer control, computer control system
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