Extrusion-occlusion dynamic failure analysis of O-ring based on floating bush of water hydraulic pump
(07/10/2022)
The sealing structure of the floating bush is used to connect the cylinder barrel and the valve plate and compensate for the inconsistency of the motion, which is caused by the offset of the cylinder barrel under the external load and the dynamic pressure of the water film. In the process of compensation, the alternative change of clearance size between closing ring and piston bush and the abrupt change of fluid pressure on O-ring make the O-ring extrude and occlude continuously, leading to seal failure and reduced service life. The sealing performance and service life of the O-ring directly
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Tác giả: Zhibin Zhang, Defa Wu, Hao Pang, Yinshui Liu, Wenshu Wei, Ran Li |
Số trang: 11 |
Lĩnh vực: Vật lý |
Năm XB: 2020 |
Loại tài liệu: Bài Báo
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Tiêu đề | Tải về |
Extrusion-occlusion dynamic failure analysis of O-ring based on floating bush of water hydraulic pum | Số trang: 11
| Loại file:
Sealing structure of the floating bush is used for the connection and sealing of the cylinder barrel and the valve plate, which is an indispensable but easily invalid part of the water hydraulic pump. Its sealing performance and service life directly affect the working performance of the water hydraulic pump [1–4]. The geometric relationship of the two-dimensional O-ring is obtained by analyzing the force and motion of cylinder barrel in offset state. Through the finite element analysis, the sealing performance and failure reasons of the floating bush seal structure are obtained, which provides the basis for sealing structure optimization.
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