A kind of marine drilling platform assisting in lifting pile shoe is used hole, whirlpool and is driven churning device
Technical field
The present invention relates to offshore drilling platforms technical field, specifically a kind of marine drilling platform assisting in lifting pile shoe is used hole, whirlpool and is driven churning device.
Background technology
The water column direction of the spraying device spray drift ejection of prior art is fixed, thereby the sphere of action that silt is rushed in spray becomes dotted line to distribute, and spray impulse face is long-pending little, cannot remove fast seabed silt to the absorption of shoe external surface, can not reach best quick spray punching and help ascending effect.
Summary of the invention
Technical assignment of the present invention is to solve the deficiencies in the prior art, provides a kind of marine drilling platform assisting in lifting pile shoe to use hole, whirlpool and drives churning device.
Technical scheme of the present invention realizes in the following manner, churning device of the present invention, its structure comprises housing, spool, valve rod, end cap and back-moving spring, wherein, in the middle of housing, be provided with valve pocket, the upper end of housing is provided with mouthpiece, the tube chamber of mouthpiece is communicated with valve pocket, the lower end of valve pocket has been threaded connection end cap, the central vertical of end cap has through hole, the top of spool and the lower nozzle of the mouthpiece composition valve arrangement that joins, the lower end of spool is provided with valve rod, valve rod center has blind hole, the top by-level of spool has eddy current inlet opening, the lower end of valve rod has spray punching, spray punching communicates with eddy current inlet opening by blind hole, the lower end cylindrical of valve rod is through among the vertical through hole at end cap center, on the cylindrical of valve rod, cover has back-moving spring, the lower end of back-moving spring is connected with end cap upper end, the upper end of back-moving spring is connected with the thrust bearing of spool bottom.
The top of described end cap is provided with sliding sleeve, the cylindrical of sliding sleeve is provided with sealing ring and is connected with inner walls, on the lower end cylindrical of spool, be provided with sealing ring, sealing ring and end cap upper end sliding sleeve inwall are slidably connected, between the lower end of valve rod and the center of end cap, be also provided with sealing ring, among the closed cavity of back-moving spring in sealing ring composition.
of the present inventionmarine drilling platform assisting in lifting pile shoe is used hole, whirlpool and is driven churning device
there is following outstanding beneficial effect: spool is broken through automatic rotation in journey in spray, changes the dotted line spray punching of prior art into surfaces of revolution spray punching, has increased spray impulse face long-pending, improve spray and rushed effect, can remove soon the parcel absorption of seabed mud to shoe, accelerate the lifting of shoe, shorten the work area migration period of oil platform.
Brief description of the drawings
The main TV structure schematic diagram that Fig. 1 is;
Fig. 2 is the cross-sectional view of valve core valve stem;
Fig. 3 is the eddy current inlet opening structural representation of spool;
Fig. 4 is spray punch structure schematic diagram.
Mark in accompanying drawing represents respectively: mouthpiece 1, housing 2, spool 3, thrust bearing 4, back-moving spring 5,
Valve rod 6, end cap 7, cavity 8, blind hole 9, eddy current inlet opening 10, spray punching 11, sliding sleeve 12, sealing ring 13.
Detailed description of the invention
Below in conjunction with accompanying drawing, marine drilling platform assisting in lifting pile shoe of the present invention being used to hole, whirlpool drives churning device to be described in further detail.
Marine drilling platform assisting in lifting pile shoe of the present invention is used hole, whirlpool and is driven churning device, its structure mainly comprises housing 2, spool 3, valve rod 6, end cap 7 and back-moving spring 5, wherein, in the middle of housing 2, be provided with valve pocket 8, the upper end of housing 2 is provided with mouthpiece 1, the tube chamber of mouthpiece 1 is communicated with valve pocket 8, the lower end of valve pocket 8 has been threaded connection end cap 7, the central vertical of end cap 7 has through hole, the top of spool 3 is provided with turbine 15, the lower nozzle of the bottom margin of turbine 15 and the mouthpiece 1 composition valve arrangement that joins, the lower end of spool 3 is provided with valve rod 6, valve rod 6 centers have blind hole 9, in the middle of the top of spool 3, have eddy current inlet opening 10, the lower end of valve rod 6 has spray punching 11, spray punching 11 communicates with eddy current inlet opening 10 by blind hole 9, the lower end cylindrical of valve rod 6 is through among the vertical through hole at end cap 7 centers, on the cylindrical of valve rod 6, cover has back-moving spring 5, the lower end of back-moving spring 5 is connected with end cap 7, the upper end of back-moving spring 5 is connected with the thrust bearing 4 of spool 3 bottoms.
The top of described end cap 7 is provided with sliding sleeve 12, the cylindrical of sliding sleeve 12 is provided with sealing ring 13 and is connected with housing 2 inwalls, on the lower end cylindrical of spool 3, be provided with sealing ring 13, sealing ring 13 is slidably connected with end cap 7 upper end sliding sleeve 12 inwalls, between the center of the lower end of valve rod 6 and end cap 7, be also provided with sealing ring 13, among the closed cavity that back-moving spring 5 forms in sealing ring 13.
Embodiment
The spray flushing device course of work of the present invention is as follows:
Water under high pressure enters from mouthpiece, promotion spool moves down, spool interlock valve rod moves down, end cap is stretched out in valve rod lower end, water under high pressure enters the turbine inlet opening at mouthpiece impact spool middle part, drive Spool rotating, water under high pressure enters the blind hole that enters again valve rod center behind eddy current inlet opening, be disc face ejection along blind hole from the spray punching rotation of valve rod lower end again, after the water under high pressure in mouthpiece is closed, valve rod is with moving on spool, and the spray punching of valve rod lower end is upwards in the mesopore of indentation end cap, spray punching is closed, and spray is rushed clean-up operation and stopped.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Except the disclosed technical characterictic of manual of the present invention, be the known technology of those skilled in the art.