摘要
针对海上油气管道外表面保温及防腐涂层的清理作业,提出了水下液压冲击器的设计方案.此冲击器采用高速开关阀控制配油阀的阀芯往复运动,从而促使活塞杆往复运动形成冲击的工作方案.根据此方案,又对此冲击器的端部工具处的密封和氮气室的容积这两个重要影响因素作了进一步分析.对端部工具处的密封结构作了设计、分析,在理论上证明了此种方式案可行性.对氮气室的初始容积与初始压力对活塞杆的冲击能的影响进行了分析,得出了氮气室在工作过程中的变化率ΔV与氮气室的初始容积V0max的比值应取0 24为宜的结论.
To finish surface clearance of an underwater petroleum pipeline, a scheme is presented for designing an underwater hydraulic impulsion tool. This impulsion tool uses a high speed on-off valve to control to-and-fro motion of the distributing oil valve core, which impels the cylinder rod to-and-fro motion to form impulsion. According to the scheme, the sealed structure of the head tool and the volume of the nitrogen room were analyzed further. The sealed structure of the head tool was designed and analyzed, and feasibility of the scheme was proved theoretically. The influence of the initial volume and initial pressure of the nitrogen room on the energy of cylinder rod was analyzed, and the conclusion is obtained that the ratio of nitrogen change ΔV and the initial volume V0max of nitrogen chamber should be 0.24.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2005年第1期88-91,共4页
Journal of Harbin Engineering University
关键词
冲击器
高速开关阀
密封结构
氮气室
Design
Hydraulic tools
Nitrogen
Petroleum pipelines
Speed
Structures (built objects)
Valves (mechanical)
