Intermittent rotary jet flushing device for spud shoe lifting of offshore drilling platform

A technology for offshore drilling platforms and spud boots, which is applied in the direction of valve devices, valve operation/release devices, sheet pile walls, etc. Small area and other problems, to achieve the effect of shortening the transfer cycle of the work area, speeding up the lifting, and improving the effect of spraying

Inactive Publication Date: 2016-08-24
齐宝兰
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Intermittent rotary jet flushing device for spud shoe lifting of offshore drilling platform

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Embodiment

[0019] The spray flushing device working process of the present invention is as follows:

[0020] High-pressure water enters from the interface pipe, pushes the valve core down, and the valve core moves down in conjunction with the annular piston. Since the tips of the helical teeth at the upper and lower ends of the annular piston are not on the same line, when the annular helical teeth at the lower end of the annular piston and the upper part of the end cover After the lower annular helical tooth contacts, the annular helical tooth at the lower end of the annular piston slides to the tooth root along the slope of the lower annular helical tooth at the upper end of the end cover. During the sliding process, the valve core rotates, and the valve stem moves downward while turning Cover, the horizontal spray hole is opened to carry out spraying and cleaning operations. When the high-pressure water of the mouthpiece is closed, the annular piston resets under the action of the ret...

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Abstract

The present invention provides an intermittent rotary jet flushing device for spud shoe lifting on an offshore drilling platform. There is a valve chamber in the middle of the housing, and an interface pipe is provided on the upper end of the housing. The lumen of the interface pipe communicates with the valve chamber. The lower end of the valve chamber is connected with an end cover through threads. The upper end of the valve chamber is provided with a ring-shaped helical tooth, and the middle of the valve cavity is provided with an annular piston. The annular helical teeth coincide with the top annular helical teeth and the end cap annular helical teeth respectively. A protruding ring is arranged in the center hole of the annular piston, and a thread is provided on the inner circle of the annular piston above the protruding ring. The valve core is fixed on the Above the central convex ring of the annular piston, an annular groove is formed on the top edge of the valve core, and a sealing ring is embedded 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 an intermittent rotary jet flushing device for spud shoe lifting aid of the 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 an intermittent rotary jet flushing device for spud shoe lifting of an offshore drilling platform. [0004] The technical solution of the present invention is realized in the following manner. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K3/314F16K31/12E02D13/08
CPCE02D13/08F16K17/046F16K21/04
Inventor 齐宝兰
Owner 齐宝兰
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