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Performance Study on Fluid Field and Temperature Field of Friction Interface in a Mechanical Seal

Author: ZhangMingMing
Tutor: HaoMuMing
School: China University of Petroleum
Course: Chemical Process Equipment
Keywords: Mechanical seal Flow field Temperature field Friction pair CFD
CLC: TH136
Type: Master's thesis
Year: 2008
Downloads: 203
Quote: 4
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Abstract


With the rapid development of the industry , the working conditions of high temperature , high pressure , high speed so that the end face of the mechanical seal friction temperature is too high , and could easily lead to abnormal wear of the seal ring , thermal cracking , deformation and the end of the liquid film vaporization , resulting in seal to fail . Therefore , the study of friction temperature field is very important . However , the seal cavity fluid flow is closely related with the sealing ring heat transfer simultaneously calculate the the seal cavity flow field and the friction temperature field of research should identify mutual influence law . In this paper, computational fluid dynamics (CFD) software numerical calculation of the the seal cavity flow field and friction Vice temperature field , select the fluid within the seal cavity and friction pair face clearance for the study, obtained by solving the three-dimensional NS equations the sealed chamber of the flow field, detailed analysis of the fluid from entering the sealed chamber to the arrival of the entire flow process of the friction pair end clearance to obtain the distribution of pressure of the fluid cavity , the velocity vector distribution , particle trajectory , the vorticity distribution , etc.; then solving the energy equation the obtained distribution and the end face of the temperature rise of the sub - face temperature of the seal chamber and the friction factor . The article also comparative analysis of influencing factors of contacting mechanical seal with spiral groove mechanical seal face temperature distribution and temperature rise . At the same time create a three-dimensional model of the fluid inside the sealed chamber and the friction pair face clearance , meshing transition from the macro scale to the micro scale , and with the mature commercial software visualization capabilities , the flow of fluid in the seal cavity with heat transfer simulation effect is intuitive , easy to observe the flow of formation and development as well as the heat transfer process , to identify the main factors of the end face of the temperature rise , provide the basis for the optimized design of the seal structure and performance , the foundation for subsequent deformation of the seal ring .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Other mechanical components
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