| STUDY ON RECIPROCATING SEALS FOR A LARGER DIAMETER AXIAL PISTON |
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| 作者姓名： | Yang Jian
Yang Huayong
Xu Bing
State Key Laboratory of Fluid Power
Transmission and Control Zhejiang University Hangzhou China |
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| 作者单位： | Yang Jian
Yang Huayong
Xu Bing
State Key Laboratory of Fluid Power
Transmission and Control，Zhejiang University，Hangzhou 310027，China |
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| 基金项目： | This project is supported by National Natural Science Foundation of China(No.50005019). |
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| 摘 要： | Sealing performance of the reciprocating seals on a larger diameter (100 mm in diameter ) axial piston is theoretically investigated. Based on the characteristics of the clearance flow between the seal and the piston, reasonable boundary conditions for Navier-Stokes equations are determined and the equations are modified, so that the final equations can describe the real flow state of the clearance flow. Through combining the final equations with finite element method, the pressure distributions within the clearance field during the reciprocating motion of the piston and the leakage rate with the pressure are studied. The deflections of the seal which affect sealing performance are calculated as well. Sealing performance of piston seals using oil as the working liquid is compared with using water. It is concluded that the seal using water as the working liquid is under dry friction, which cannot be dealt with the theory of fluid mechanics. The seal structure is only acceptable using oil as the working l
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| 关 键 词： | 大直径 轴向柱塞泵 液压系统 往复式密封 |
STUDY ON RECIPROCATING SEALS FOR A LARGER DIAMETER AXIAL PISTON |
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| Yang Jian
Yang Huayong
Xu Bing
State Key Laboratory of Fluid Power
Transmission and Control,Zhejiang University,Hangzhou ,China.STUDY ON RECIPROCATING SEALS FOR A LARGER DIAMETER AXIAL PISTON[J].Chinese Journal of Mechanical Engineering,2004,17(1):152-155. |
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| Authors: | YangJian YangHuayong XuBing |
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| Affiliation: | StateKeyLaboratoryofFluidPowerTransmissionandControl,ZhejiangUniversity,Hangzhou310027,China |
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| Abstract: | Sealing performance of the reciprocating seals on a larger diameter (100 mm in diameter ) axial piston is theoretically investigated. Based on the characteristics of the clearance flow between the seal and the piston, reasonable boundary conditions for Navier-Stokes equations are determined and the equations are modified, so that the final equations can describe the real flow state of the clearance flow. Through combining the final equations with finite element method, the pressure distributions within the clearance field during the reciprocating motion of the piston and the leakage rate with the pressure are studied. The deflections of the seal which affect sealing performance are calculated as well. Sealing performance of piston seals using oil as the working liquid is compared with using water. It is concluded that the seal using water as the working liquid is under dry friction, which cannot be dealt with the theory of fluid mechanics. The seal structure is only acceptable using oil as the working liquid. |
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| Keywords: | Larger diameter axial piston Reciprocating seals Sealing performance |
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