Key Technology and Achievements：
Put forward a new pressure tight gravity piston coring principle, in which the coring function and pressure tight function are combined into one pipe.
Compare with similar samplers, Its length of pressure tight samples, utilization ratio of Research Vessel's side area, and pressure tight ratio are all doubled.
Had been equipped in Several Vessels of CNOOC, Territorial Resource Department, State Bureau of Oceanography, ministry of water conservation. Reduce 70% cost while it is used to replace the function of deep sea short hole driller.
Is one of the 2 core achievements of "Deep sea detecting and sampling equipment technique under extreme environment", which acquired the State Science and technology invention reward in 2009, level 2.