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《Lubrication Engineering》 2009-10
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Design of High-speed Pump Mechanical Seal of Acetic Anhydride Production Line

Zhou Guangfeng He Yujie Zhou Shenggui Xiao Xiaping Wang Jun(Technical and Research Center of Fluid Machinery Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China)  
High-speed pump was used in the acetic anhydride plant.According to its characteristics of high rotation speed(linear speed of the sealing end is higher than 25 m/s),large centrifugal force created by moving parts of the mechanical seal,the particularity of the medium it conveyed(poisonous,volatile,corrosive),high temperature of the sealing cavity and easy vaporization of the conveyed medium for high-speed pump used in acetic anhydride production line,static conformation balanced mechanical seal was designed.Friction heat of the end surface was calculated,and thread pumping ring was designed on the moving ring in order to improve heat exchange.The result of site operation shows that when the main pump works,this pumping ring can provide appropriate pressure for the separation liquid,improve the separation liquid cycle speed and take away the friction heat in time,and satisfy the cooling and lubrication requirements of mechanical seal.
【Fund】: 江苏大学基金项目(04JDG040);; 江苏省自然科学基金项目(BK2007095);; 江苏省高校自然科学基础研究项目(06KJB480019)
【CateGory Index】: TH136
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