活塞式水下力传感器压力平衡装置力学特性分析

摘要/Abstract

摘要： 以深海活塞式力传感器为研究对象，基于液体的可压缩性，推导出活塞补偿器油液体积变化与仪器工作水深以及内外压差之间的关系式，并给出内外压差的计算方法。基于MATLAB软件对活塞式压力平衡装置进行静态和动态分析，以充油式深海压力传感器为例，推导出活塞的爬行现象与O形圈截面直径、预压缩率、摩擦因数、活塞质量之间的关系。研究结果表明，减小O形圈截面直径、预压缩率、摩擦因数、活塞质量均有助于改善爬行特性。总结了活塞式压力平衡装置结构的设计原则。

关键词: 压力平衡装置, O形圈, 静动态分析, 爬行现象

Abstract: Based on the condensability of liquid, the underwater force sensor with pressure balance of piston was investigated and the relationship among the working-depth of equipment, the volume change of the compensator fluid of piston and the pressure difference between inside and outside of equipment were deduced. The calculation method was also put forward. The static and dynamic analyses of the force sensor by MATLAB provided reference for design and calculation of piston used for pressure balance. The relationship between the creeping phenomenon of piston used for oil-filled deep-sea pressure sensor and the relevant parameters of O-shaped ring was analyzed. The results show that reducing the O-shaped ring cross-sectional diameter, the rate of pre-compression, the friction coefficient and the piston quality help to improve the creeping characteristics. The design principles of the structure of pressure balance device of piston were summarized.

Key words: pressure balancing device; , O-shaped ring; , static and dynamic analysis; , creeping phenomenon

中图分类号:

TP212

陈恩伟, 杨历, 曹永友, 陆益民, 刘正士, 王勇. 活塞式水下力传感器压力平衡装置力学特性分析[J]. 中国机械工程.

Chen Enwei, Yang Li, Cao Yongyou, Lu Yimin, Liu Zhengshi, Wang Yong. Analyses of Mechanics Property of Pressure Balance Devices of Piston Type Underwater Force Sensor[J]. China Mechanical Engineering.

参考文献

[1]封锡盛.从有缆遥控水下机器人到自治水下机器人[J].中国工程科学，2000，2(12)：29-33.

Feng Xisheng. From Remotely Operated Vehicles to Autonomous Undersea Vehicles[J].Chinese Engineering Sciences, 2000, 2(12): 29-33.

[2]吴建美.深海压力模拟试验装置的研究[D].合肥:合肥工业大学，2015.

[3]陈建平,薛建平.深潜器设计中的压力补偿研究[J]. 液压与气动,1995(1)：16-18.

Chen Jianping, Xue Jianping.Research on Pressure Compensation in the Design of the Submersible[J]. Hydraulics and Pneumatics, 1995(1): 16-18.

[4]王勇,刘正士,陈恩伟,等.膜片式水下力传感器力学特性与设计原则分析[J].中国机械工程,2008,19(15): 1774-1777.

Wang Yong, Liu Zhengshi, Chen Enwei, et al. Mechanical Characteristics and Design Principles of Underwater Force Sensor Based on Pressure Balance of Film[J]. China Mechanical Engineering, 2008, 19(15): 1774-1777.

[5]王勇,刘正士,陈恩伟,等.软囊式水下力传感器的力学特性与设计原则[J].机械工程学报,2009,45(10): 15-21.

Wang Yong, Liu Zhengshi, Chen Enwei, et al. Mechanical Characteristic and Design Principle of Underwater Force Sensor Based on Pressure Balance of Bladder[J]. Journal of Mechanical Engineering, 2009, 45(10): 15-21.

[6]王勇.水下机器人多轴力传感器关键技术及其应用研究[D]. 合肥:合肥工业大学，2007.

[7]SMC（中国）有限公司. 现代实用气动技术[M]. 北京：机械工业出版社,1998.

[8]Mokhtar M O A, Younes Y K, El Mahdy T H, et al. A Theoretical and Experimental Study on the Dynamics of Sliding Bodies with Dry Conformal Contacts[J]. Wear, 1998, 218(2): 172-178.

[9]Capone G, D Agostino V, Della Valle S, et al. Influence of the Variation between Static and Kinetic Friction on Stick-slip Instability[J]. Wear, 1993, 161(1/2): 121-126.

[10]张云启.深海活塞式压力平衡装置密封结构的研究[D].合肥:合肥工业大学，2014.

[11]李勇波,黄豪彩,牛文达.压力补偿器密封件的有限元分析及实验研究[J].液压气动与密封，2010,30(10): 23-27.

Li Yongbo, Huang Haocai, Niu Wenda. Experimental Research and Finite Element Analysis of Seals in the Pressure Compensator[J]. Hydraulics Pneumatics and Seals, 2010, 30(10): 23-27.

[12]牛文达.气密采水瓶压力补偿器设计与密封性能试验研究[D]. 杭州：浙江大学，2010.

[13]金哲,柯坚,于兰英,等.液压缸低速爬行动力学研究[J]. 机械设计，2006，23(2)：39-42.

Jin Zhe, Ke Jian, Yu Lanying, et al. Study on Low Speed Creeping Dynamics of Hydraulic Cylinder[J]. Journal of Machine Design, 2006, 23(2): 39-42.

[14]吴用.简析直线往复运动液压缸爬行的原因和对策[J].液压气动与密封，2013，33(7): 55-57.

Wu Yong. The Brief Analysis on Cause and Solution of Linear Reciprocating Hydraulic Cylinder's Creeping[J]. Hydraulics Pneumatics and Seals, 2013, 33(7): 55-57.

[15]周丽娟.基于压力自适应体积补偿的气密采水器的设计及试验研究[D].杭州：浙江大学，2008.

[16]刘振东.深海活塞式压力补偿器的力学特性分析[D]. 合肥：合肥工业大学，2013.

[17]徐辅任.对O形密封圈引起的摩擦力的计算[J].石油机械，1989, 17(8): 9-10.

Xu Furen.Calculation of Friction Force Caused by O-shaped Sealing Ring[J]. China Petroleum Machinery, 1989,17(8):9-10.

[18]Hackman D J，Caudy D W. 水下工具[M].吴晶，译.北京：海洋出版社，1986.

[19]邹波.深海电机旋转轴密封性能研究[D].成都：西南交通大学，2008.