深海沉积物取样器的楔形密封方式研究

Research on the form of wedge seals of deep-sea sediment samplers

楔形块密封属于接触式静密封范畴,其原理是在楔形块上施加一定的压力,使得楔形块和取样筒接触面在深海取样过程中产生闭合的密封环带,阻止介质流出,从而达到密封和保压的要求。本文通过理论计算和数值仿真的方法开展了楔形块结构优化和密封环带的仿真分析。结果表明:优化的密封结构密封效果较好,可以保持样品的原位压力并有效地阻止样品泄漏;该结构比传统的密封结构具有更好的保压能力,是一种能够适应全海深沉积物取样的新型密封结构。

Wedge block seals fall into the category of contact static seals,whose principle is that a sealing ring belt is pressurized on the interface between a wedge block seal and a sampling tube to hold the pressure and meet the sealing requirements.In this paper,the structure optimization and simulation analysis of a seal⁃ing ring belt are carried out by means of theoretical calculation and numerical simulation.The results show that the optimized sealing structure has a better ability of maintaining pressure,capable of being applied to the sampling of deep-sea sediments in all the seas.