新型全封闭刀口联合式管口封的设计及应用

重力活塞取样器是海洋地质调查不可缺少的调查设备,而管口封又是重力活塞取样器的重要部件。管口封的好坏不但影响到取样器的贯入深度和取芯丰,还影响到所取岩芯的质量．介绍了一种最近研制成功的新型全封闭刀口联合式管口封。海上实验在特定海区成功的获取了17．11m的长岩芯,取样率达91．3％,创造了我国海洋地质调查用重力活塞取样器获取岩心的最长记录。该设计已通过国家知识产权局批准授予实用新型专利。

Design and Application of New Combined Pipe Head Seal With Fully Enclosed Knif Edge

The gravity piston corer is an indispensable equipment for marine geologic survey, and the pipe head seal is an important component, so the quality of pipe head seal affects not only the penetration depth and coring rate of gravity corer, but also the quality of collected core. In this paper, a new combined pipe head seal with fully enclosed knif edge is introduced. A core 17.11 m long was successfully collected in an offshore experiment area with the newly designed corer, and the sampling rate achieved 91.3 %, which created a collected core length record with the gravity piston corer in Chinese offshore geologic surveys. The design has been awarded the new practical patent by the National Intellectual Property Right Administration of China.