| 纯水密封径向间隙优化设计及仿真计算 |
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| 引用本文： | 孟令宇,王伟,周如林,赵玉贝,乔子石,刘宇航. 纯水密封径向间隙优化设计及仿真计算[J]. 液压与气动, 2022, 0(6): 127-134. DOI: 10.11832/j.issn.1000-4858.2022.06.015 |
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| 作者姓名： | 孟令宇 王伟 周如林 赵玉贝 乔子石 刘宇航 |
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| 作者单位： | 1.北京天玛智控科技股份有限公司, 北京 101399; 2.中国矿业大学(北京) 机电与信息工程学院, 北京 100083 |
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| 基金项目： | 中国煤炭科工集团科技创新创业基金资助项目(2020-TD-MS009);北京天地玛珂电液控制系统有限公司项目(2020TM007-J1) |
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| 摘 要： | 纯水密封摩擦力大、泄漏量大、寿命短,无法为矿井液压系统稳定工作提供可靠有效的保障,从而导致开采过程中出现安全隐患。针对上述问题,利用有限元分析软件ANSYS建立复合密封件二维轴对称模型,在其他条件相同的情况下,分析不同径向间隙、不同压力载荷对密封静态和动态性能的影响,得到密封接触应力变化时对密封性能的影响规律,通过对不同径向间隙进行参数化设计,找到满足工作条件的最优径向间隙。仿真分析表明:径向间隙为0.25 mm时,复合密封件在1.5倍公称压力下的接触应力为49.854 MPa,密封效果最好;径向密封间隙为0.375 mm时,接触应力过小会导致泄漏现象产生;径向间隙为0.125 mm时,虽然密封性能进一步提升,但是接触应力的增大导致密封件磨损加速。实验表明:0.25 mm径向间隙液压缸密封寿命可达到20000次,较0.125 mm径向间隙液压缸密封寿命长约1/3。
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| 关 键 词： | 纯水液压缸 接触应力 密封间隙 有限元分析 复合密封件 密封寿命 |
| 收稿时间： | 2021-08-17 |
Optimization Design and Simulation of Radial Clearance for Pure Water Seal |
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| MENG Ling-yu,WANG Wei,ZHOU Ru-lin,ZHAO Yu-bei,QIAO Zi-shi,LIU Yu-hang. Optimization Design and Simulation of Radial Clearance for Pure Water Seal[J]. Chinese Hydraulics & Pneumatics, 2022, 0(6): 127-134. DOI: 10.11832/j.issn.1000-4858.2022.06.015 |
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| Authors: | MENG Ling-yu WANG Wei ZHOU Ru-lin ZHAO Yu-bei QIAO Zi-shi LIU Yu-hang |
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| Affiliation: | 1. Beijing Tianma Intelligent Control Technology Co., Ltd., Beijing 101399; 2. School of Mechanical Electronic & Information Engineering, China University of Mining and Technology-Beijing, Beijing 100083 |
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| Abstract: | Pure water seal has large friction, large leakage and short service life, which cannot provide effective and reliable service for the stable. operation of mine hydraulic system, resulting in potential safety hazards in the mining process. In view of this, a two-dimensional axisymmetric model of composite seal is established by using the finite element analysis software ANSYS. In the other conditions being equal, the effects of different radial clearance and different pressure loads on the static and dynamic performance of seal are analyzed, and the effects of the change of seal contact stress on the sealing performance is obtained. The simulation analysis shows that when the radial clearance is 0.25 mm, the contact stress of the composite seal under 1.5 times of the nominal pressure is 49.854 MPa, and the sealing effect is the best; When the radial seal clearance is 0.375 mm, small contact stress will lead to leakage; When the radial clearance is 0.125 mm, although the sealing performance is further improved, excessive contact stress will accelerate the wear of the seal. The experimental results show that the sealing life of 0.25 mm radial clearance hydraulic cylinder can reach 20000 times, which is about 1/3 times longer than 0.125 mm radial clearance hydraulic cylinder. |
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| Keywords: | pure water hydraulic cylinder contact stress seal clearance finite element analysis composite seal sealing life |
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