不规则孔面积数字化测量装置机械结构设计（本科毕业论文设计）.doc
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ABSTRACT
Nozzle Central (also known as the stator blade or director) is an important component of the turbine. And it has two functions : The first function is to control the direction of the air-flow to make flowing air have no impact on entering the turbine ; The second function is to make the gas expand¡¢accelerate and reduce its own pressure .And then it changes the heat energy of the gas into kinetic energy which drives impeller to work.
The area of nozzle ring throat mouth has a great affect in this part .It can increase the pressurization to increase the engine low-velocity torque and to improve its responsiveness when the engine works under idle speed and low speed situations. When the engine works under high speed situation, the nozzle blade wholly opens or has great openness degree, which can make the pressure of the turbocharger less than that of the uncontrolled turbine block and make sure the engine has required air and power. So the study of the measuring area of nozzle ring throat mouth gives a great advantage to studying the turbine's efficiency.
Through discussing the overall scheme for the area measuring of nozzle ring throat mouth in this article, I designed the device structure and specific parts, analyzed the structure application and the tolerance accuracy of main parts and give detailed description for the main parts selection and their application. During the whole process of designing .I read lots of references from home and abroad, referred to lots of specialty knowledge on mechanical industry and finally designed one complete device for measuring the area of nozzle ring throat mouth.
Key words: Nozzle ring throat mouth, Area Measurement, Measurement structure
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ABSTRACT
Nozzle Central (also known as the stator blade or director) is an important component of the turbine. And it has two functions : The first function is to control the direction of the air-flow to make flowing air have no impact on entering the turbine ; The second function is to make the gas expand¡¢accelerate and reduce its own pressure .And then it changes the heat energy of the gas into kinetic energy which drives impeller to work.
The area of nozzle ring throat mouth has a great affect in this part .It can increase the pressurization to increase the engine low-velocity torque and to improve its responsiveness when the engine works under idle speed and low speed situations. When the engine works under high speed situation, the nozzle blade wholly opens or has great openness degree, which can make the pressure of the turbocharger less than that of the uncontrolled turbine block and make sure the engine has required air and power. So the study of the measuring area of nozzle ring throat mouth gives a great advantage to studying the turbine's efficiency.
Through discussing the overall scheme for the area measuring of nozzle ring throat mouth in this article, I designed the device structure and specific parts, analyzed the structure application and the tolerance accuracy of main parts and give detailed description for the main parts selection and their application. During the whole process of designing .I read lots of references from home and abroad, referred to lots of specialty knowledge on mechanical industry and finally designed one complete device for measuring the area of nozzle ring throat mouth.
Key words: Nozzle ring throat mouth, Area Measurement, Measurement structure
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ABSTRACT II
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