A thread-guided rotary jetting device for lifting of pile boots of offshore drilling platform

Abstract

The present invention provides a thread-guided rotary spraying device for spud shoe lifting on an ocean drilling platform, which is composed of a shell, an annular piston, a valve core, a valve stem, an end cover and a return spring, wherein a device is arranged in the middle of the shell Valve cavity, the upper end of the housing is provided with an interface pipe, the lumen of the interface pipe communicates with the valve cavity, the lower end of the valve cavity is connected with an end cover through threads, the center of the end cover is vertically opened with a through hole, and the middle of the valve cavity is provided with a ring Piston, the lower end of the annular piston is provided with an external thread sleeve, the outer circle of the external thread sleeve is provided with a threaded convex line, the upper end of the end cap is provided with an internal threaded sleeve, the inner wall of the internal threaded sleeve is provided with a threaded groove, and the threaded convex line Slidingly connected with the thread groove, the inner wall of the annular piston is provided with a convex ring, and the inner circle of the annular piston above the convex ring is provided with threads, the valve core is fixed in the middle of the annular piston through the thread, and the top edge of the valve core is provided with a ring A sealing ring is inlaid in the annular groove, and the sealing ring is connected with the tapered valve port on the top of the valve cavity to form a valve structure.

Description

technical field [0001] The invention relates to the technical field of offshore oil drilling platforms, in particular to a thread-guided rotary spraying device for lifting a spud shoe of an offshore drilling platform. Background technique [0002] The direction of the water column sprayed out by the jetting head of the jetting device in the prior art is fixed, so the action range of the jetting sediment is distributed in a point line, and the jetting area is small, and it is impossible to quickly remove the adsorption of the seabed sediment on the outer surface of the spud can. Can not reach the best rapid spraying and boosting effect. Contents of the invention [0003] The technical task of the present invention is to solve the deficiencies of the prior art, and to provide a thread-guided rotary spraying device for spud shoe lifting of an offshore drilling platform. [0004] The technical solution of the present invention is realized in the following manner. The rotary s...

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Problems solved by technology

[0002] The direction of the water column ejected by the jetting head of the jetting device in the prior art is fixed, so the action range of the jetting sediment is distributed in a point line, and the jetting area is small, and it is impossible to quickly remove the adsorption of the seabed sediment to the outer surface of the spud can. Can not achieve the best rapid spray boost effect

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