Novel high strength ocean drilling platform sliding sleeve formula marine riser filling valve

The utility model relates to a novel high strength ocean drilling platform sliding sleeve formula marine riser filling valve, including the marine riser main part, the marine riser hatch door, driving oil cylinder, the balanced valve, the main control valve, the locking -valve, change -over valve and accumulator, the cladding of marine riser hatch door is at marine riser main part and sliding connection, the balanced valve inlays in addition in the marine riser main part, the main control valve in addition through oil pipe respectively with the balanced valve, locking -valve and change -over valve intercommunication, the change -over valve in addition respectively with the locking -valve, the accumulator, the driving oil cylinder intercommunication, the marine riser main part, marine riser hatch door pipe outer surface of the wall establishes inertia inoxidizing coating and elasticity protective layer, the pipe wall of marine riser main part and marine riser hatch door is in addition including the protection outer wall, inner wall and wear -resisting bed course. This novel structural strength is big, and toughness is good, shocks resistance and corrosion -resistant ability reinforce to effectual solid debris or the resist ability of biological striking of marine riser filling valve in to deep sea pressure, marine corrosion nature environment and ocean that has improved, very big improvement marine riser filling valve's environmental suitability.