Sealing Principle Analysis of PTFE Rectangular Sealing Ring of High-pressure Vane PumpJi Hong Lan Bojie Ren Xiaoqing Wang Zhengrong College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou Gansu 730050, China） .AbstractTFE rectangular sealing ring is separately used to seal the radial clearance between high and low pressure region in high-pressure vane pump. The basic sealing principle was analyzed based on aperture flow theory, the two-dinlen- sional axisymmetric finite element model of the rectangular seal was established by ANSYS, and its deformation and stress distribution under hydrostatic pressure were simulated. The results show that greater contact stress is existed in the small region on the low-pressure side of the seal and the external cylindrical surface of the seal is the main seal surface. The part with the maximum contact stress plays a major role in sealing. There is strong zone of Von Mises stress near to the low-pres- sure side of the seal and the shape of the rectangular section is turned into a similar diamond~shaped one. When there are changes in hydrostatic pressure distribution caused by its shape and position errors in the main seal surface, the remarkable change of the stress distribution would taka place as well as the sealing performance.
Key wordsTFE ; rectangular sealing ring; sealing principle ; finite element analysis
|免责声明|手机版|Archiver|氟塑料论坛
( 苏ICP备14011106号-3 )
IP卡
狗仔卡
发表于 2012-3-10 21:18:29
TFE rectangular sealing ring is separately used to seal the radial clearance between high and low pressure region in high-pressure vane pump. The basic sealing principle was analyzed based on aperture flow theory, the two-dinlen- sional axisymmetric finite element model of the rectangular seal was established by ANSYS, and its deformation and stress distribution under hydrostatic pressure were simulated. The results show that greater contact stress is existed in the small region on the low-pressure side of the seal and the external cylindrical surface of the seal is the main seal surface. The part with the maximum contact stress plays a major role in sealing. There is strong zone of Von Mises stress near to the low-pres- sure side of the seal and the shape of the rectangular section is turned into a similar diamond~shaped one. When there are changes in hydrostatic pressure distribution caused by its shape and position errors in the main seal surface, the remarkable change of the stress distribution would taka place as well as the sealing performance.
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡