CN206276518U - The online three swirler dehydration device of submarine pipeline - Google Patents

Abstract

The utility model provides a kind of online three swirler dehydration device of submarine pipeline, is applied to the high-efficiency dehydration of the aqueous well stream of subsea production system.The dehydration device is organically combined with subsea manifold and submarine pipeline, realizes the online installation and operation of submarine pipeline, and according to three swirler dewatering system and equipment under water, realize that crude oil and production waste integrated treatment and oil gas water are efficiently separated；First order dehydrator is constructed using column monotubular, implement first order axial high speed vortex crude oil dewater treatment according to the centrifugation in the cone field of whirlpool, second level dehydrator is using short three constructions of tubulose, implement second level axial stratification eddy flow sewage according to eddy flow field quickly to process, third level dehydrator is using squirrel-cage cylinder construction long, according to many eddy flow fields implement third level squirrel-cage parallel connection rotational flow advanced treatment of wastewater, crude oil booster the fluid after dewater treatments at different levels is forced into after identical high-voltage value come together in it is same it is outer it is defeated sea pipe in together outward it is defeated.

Description

The online three swirler dehydration device of submarine pipeline

Technical field

The utility model is related to a kind of aqueous well stream of ocean engineering field outer defeated device of Direct Dehydration under water, particularly relates to And a kind of online three swirler high effective dehydration device of submarine pipeline under water.

Background technology

At present, the typical gathering facility of domestic and international offshore oilfield is configured to " high pressure well stream → standpipe → platform manifold De- heater → the electric dehydrator of the de- booster pump → electricity of → three phase separator → secondary heater → second-stage separator → electricity → outer defeated Pump → submarine pipeline ", wherein, whole oil vapor treatment technology mainly uses conventional dehydration equipment and treatment effeciency is relatively low；Additionally, high Kill-job stream by submarine pipeline, standpipe and platform pipe network long distance delivery and processing system at different levels dehydration degassing after, whole flow process The electric energy and heat energy excess loss of operation are serious, not only increase the electric load of Platform Power Stations facility, and also need to be equipped with specially The heat stations facilities such as thermal medium boiler, the waste-heat recovery device of door provide substantial amounts of heat for the heaters at different levels of oil vapor treatment.Separately On the one hand, the production waste after the dehydration of offshore platform oil vapor treatment system is due to its oil content higher, and needs configuration special Sewage treatment facility, i.e., " swash plate oil expeller → dissolved air floatation machine → walnut shell filter → Water Tank " or " boosting pump → Hydrocyclone → compact air supporting → Water Tank " is processed into reinjection into reservoir or direct outer row after qualified purified water, and production is dirty The water filling pressure stabilizing equipments such as configuration surge tank, water injecting pump, water filling manifold and water filling spherical pig service cylinder are also needed to during water reinjection into reservoir The pressure demand of reinjection into reservoir could be met after supercharging.The compact oil water separator for being applied to offshore platform at present is generally used Hydraulic cyclone and monomer cyclone pipe parallel technology, to reduce the space of platform deck shared by separation equipment, such as U.S. FMC The dehydration equipment of Technologies companies research and development, but the domestic compact Technology Research of Dehydration to offshore platform is still located at present In the experimental study stage.In addition, for subsea production system it is special oil-gas-water separator research both at home and abroad also in Step and experimental stage.

Thus, by being actively developed the online high effective dehydration device of new submarine pipeline, by existing offshore platform oil gas Collection is defeated and sewage disposal system is reduced to the online oil-water separation system of submarine pipeline under water, effectively to solve conventional processing systems And its related facility floor space and the drawback such as weight is big；And the conveyance conduit such as standpipe and platform pipe network, heating need not be configured The equipment such as device, booster pump, output pump, sewage disposal, while without heat user facility and increasings such as extra supporting heat stations, heaters The electricity user equipment such as press pump and output pump so that the operation power consumption of oil-gas gathering and transportation and sewage disposal is remarkably decreased, and finally realizes water Lower profit is efficiently separated, and reaches the purpose of lifting deep water hydrocarbon field development benefit.

The content of the invention

For the defect and deficiency that overcome existing crude oil of offshore platform and production wastewater treatment facility to exist, and improve under water Present Research of the oil-gas-water separator still in starting and experimental stage, the purpose of this utility model is to provide a kind of suitable water The outer defeated online three swirler dehydration device of submarine pipeline of lower production system oil well liquid-producing Direct Dehydration.The dehydration device and water Lower manifold and submarine pipeline are organically combined, and realize the online installation and operation of submarine pipeline, while according to the dehydration of three swirler under water System and equipment, possess crude oil and production waste integrated treatment, and oil gas water is efficiently separated, production waste fast deep treatment etc. Feature.

It is that a kind of exploitation online three-level of submarine pipeline is revolved that the utility model solves the technical scheme that its technical problem used Stream dehydration device, is mainly made up of first order dehydrator, second level dehydrator, third level dehydrator and crude oil booster.Under water Oil well liquid-producing is collected to subsea manifold and enters first order dehydrator through jumper pipe by each well subsea production tree, implements first order axle To high-speed eddy crude oil dewater treatment, most water phase, oil content in water after first order dewater treatment in removing oil well liquid-producing Production waste higher enters second level dehydrator through one-level drainpipe, and implements second level axial stratification eddy flow sewage and quickly locate Reason, removing production waste in most oil phase, after the dewater treatment of the second level in water the relatively low production waste of oil content through two grades Drainpipe enters third level dehydrator, implements third level squirrel-cage parallel connection rotational flow advanced treatment of wastewater, is remained in removing production waste Remaining oil phase, oil-gas two-phase flow, two grades of fluid and three-level liquid after three-level dewater treatment are flowed through after crude oil booster pressurizes respectively Come together in formed in same outer defeated sea pipe high pressure live crude and together outside it is defeated, and qualified purified water then enters through three-level drainpipe In entering water delivery manifold.

First order dehydrator is constructed using column monotubular, the overcoating seawater corrosion prevention layer of entire body, according to the centrifugation point in the cone field of whirlpool Implement first order axial high speed vortex crude oil dewater treatment from effect, removing subsea well produces most water phase in liquid, and it is wrapped Include and make swirling body, one-level dehydration tube, one-level oil collecting pipe, one-level commutator segment, oil extraction bushing and one-level oil exit pipe, wherein, make vortex The material of body, one-level oil collecting pipe and one-level commutator segment selects bidirectional stainless steel, and the material of one-level dehydration tube is not using Rust steel and inner liner metal ceramics.Swirling body is made positioned at the porch of one-level dehydration tube, for producing share split high-speed rotational beam and making Each stock eddy flow beam is projected along the barrel tangential tilt of one-level dehydration tube, and it is made up of vortex cone and vortex wheel, vortex cone and vortex Wheel is by same material one cutting forming；The structure that vortex cone is combined using cone and cylinder, the taper of its upper cone More than the taper of lower cone, while the diameter of the big end disc of the upper cone and lower cone of vortex cone is equal to the external ring of its intermediolateral column The diameter in face, the upper cone of vortex cone is used for smoothly introducing oil well liquid-producing on each vortex tooth of vortex wheel, and its lower cone is then The oil-gas two-phase flow after dehydration is caused reversely to rise for the central part after preventing each stock eddy flow beam from going out confluxes too early.Whirlpool Stream wheel is made up of 16~24 vortex teeth, and each vortex tooth is evenly distributed along the outer ring surface of vortex cone intermediate cylinder.Each vortex The axial length of tooth is equal to the height of vortex cone intermediate cylinder, and the tooth trace for being vortexed tooth uses build-up curve, its tooth trace top The axis keeping parallelism of tangent line and vortex cone, and the slope of its tooth trace is from top to bottom sequentially reduced, the slope of tooth trace bottom is 15 ° ~20 °；The height for being vortexed tooth is equal to the inner surface diameter and vortex cone intermediate cylinder outer ring surface diameter of one-level dehydration tube porch Difference, and vortex tooth upper bevel and cut into the semicircle conical surface, the semicircle conical surface of all vortex teeth is on the same conical surface And overlapped with the conical surface of vortex cone upper cone；The width for being vortexed tooth is from top to bottom gradually widened, and is thus vortexed place tooth between tooth The area of section of gap constantly reduces, and the oil well liquid-producing flow velocity for flowing through vortex tooth backlash is able to constantly lift and ultimately form rotation at a high speed Projected after a fluid stream.

Share split high-speed rotational beam forms whirlpool cone field and implements the first order dewater treatment of oil well liquid-producing in one-level dehydration tube, it Using thick-wall cylinder and its inner surface in the form of the face of cylinder and circular conical surface are combined, one-level dehydration tube successively by make scroll, Whirlpool Taper Pipe, rectifying tube, triplet type oil exit pipe and one-level drainpipe composition, make the axial length of scroll, whirlpool Taper Pipe and rectifying tube according to Secondary increase, and the big end disc of whirlpool Taper Pipe inner conical surface diameter be equal to make scroll internal diameter and whirlpool Taper Pipe inner conical surface small end disc it is straight Footpath is then equal to the internal diameter of rectifying tube and one-level drainpipe, triplet type oil exit pipe is set between rectifying tube and one-level drainpipe, and pass through Oil extraction bushing is coupled with one-level oil exit pipe.Make between the tube wall of scroll and the crest top land of vortex tooth using interference fit and reality The positioning of swirling body is now made, while realizing that one-level is whole using interference fit between the piece top surface of the tube wall of rectifying tube and each commutator segment The positioning of flow.

One-level oil collecting pipe is located at the central part of rectifying tube in one-level dehydration tube, for collecting first order dewater treatment in time Contain the oil-gas two-phase flow of a small amount of water afterwards and be then exhausted from first order dehydrator after being conducted into one-level oil exit pipe, it is isometrical using 90 ° End face where bend pipe, the initiating terminal of one-level oil collecting pipe is cut into coniform, and the taper of the initial end face is dehydrated equal to one-level The taper of whirlpool Taper Pipe in cylinder；The end of one-level oil collecting pipe is coupled by screw thread with oil extraction bushing, and its axis is dehydrated with one-level The axis of triplet type oil exit pipe overlaps in cylinder.The ring flange of oil extraction bushing and triplet type oil exit pipe and the ring flange of one-level oil exit pipe Diameter is equal, the cylinder in the shape that oil extraction sleeve inner surface is combined using the conical surface and cylinder, and oil extraction sleeve inner surface Diameter is equal to the internal diameter of one-level oil collecting pipe, and the big end disc diameter of the conical surface in oil extraction sleeve inner surface is then equal to one-level dehydration tube In one-level oil exit pipe inside the big end disc of the conical surface diameter.

One-level commutator segment is used for for the production waste after first order dewater treatment being rectified into uniform axially stream by bumpy flow, It is made up of 8~16 chip architecture identical commutator segments and the even tube wall along one-level oil collecting pipe is arranged, and one-level commutator segment is by circle The mode of week weldering and it is interior be connected to one-level oil collecting pipe, while the rotation direction of each commutator segment is identical and each vortex tooth with vortex wheel respectively Rotation direction be consistent.The contour line of each commutator segment of one-level commutator segment is arc and the combined spin line of straightway, its arc The recessed and lower camber line of upper camber line in line segment is convex, and the above tangent line of the tangent line of camber line initiating terminal and lower camber line end in arc The keeping parallelism between the axis of one-level dehydration tube.The thickness of each commutator segment gradually increases along the arc of its contour line, and In arc the initiating terminal of upper camber line is punctured into an oblique line while reaching maximum in the end of lower camber line, then each commutator segment Thickness keeps constant along the straightway of its contour line, and thus bumpy flow can smoothly be cut on each commutator segment and gradually be rectified into axle Xiang Liu.

Second level dehydrator implements second using short three constructions of tubulose, the overcoating seawater corrosion prevention layer of entire body according to eddy flow field Level axial stratification eddy flow sewage is quickly processed, most oil phase in removing production waste, and it includes two grades of dehydration tubes, two grades of axles Flow cartridge, two grades of oil exit pipes, left backing plate and right clapboards, two grades of axle flow cartridge entire bodies use bidirectional stainless steel, and two grades of dehydration tubes are then Using stainless steel and inner liner metal ceramics.Two grades of dehydration tubes use reducing tee core structure, realize flow at high speed production waste Buffering, the axis of its cylinder and the axis of one-level dehydration tube and three-level dehydration tube are in same plane and three axis are mutual It is arranged vertically, integrally shows the special construction of U-like shape；The inlet tube section of two grades of dehydration tubes is located at the centre of second level dehydrator Position, and its entrance pipeline section internal diameter is less than two grades of internal diameters of dehydration tube, and it is equal to the internal diameter of one-level drainpipe in one-level dehydration tube. Two grades of left ends of dehydration tube cylinder are coupled with two grades of oil exit pipes by left backing plate and are realized sealing, and its right-hand member by it is right every Plate is coupled with the Municipal secondary effluent pipe of third level dehydration tube and is realized sealing；Left backing plate uses plate-like flange, its central inner ring Face is connected using tapped through hole and with two grades of axle flow cartridges, while mistake between the through hole and two grades of axle flow cartridge outer ring surfaces in right clapboard center It is full of cooperation, positioning of two grades of axle flow cartridges in two grades of dehydration tubes is realized jointly.

The second level sewage of the production waste formation eddy flow field implementation oil well liquid-producing of layered-rotation is quick in two grades of axle flow cartridges Treatment, it uses split type double-barrel structure, and its axis overlaps with the axis of two grades of dehydration tubes, is consequently formed from inside to outside that three together The special tectonic of heart arrangement.Two grades of axle flow cartridges include making whirl cylinder, helical tooth, interior receipts oil cylinder and outer shaft flow cartridge, make whirl cylinder and set The inside and outside bitubular is calculated as, its wall thickness for making rotation outer barrel is equal to the wall thickness of outer shaft flow cartridge, while making the outer ring surface and outer shaft stream of rotation outer barrel The outer ring surface of cylinder direct tube section is on same cylinder, and the wall thickness for making medial rotation cylinder is then equal to the wall thickness of the oily cylinder of interior receipts, and makes medial rotation The inside conical surface small end disc diameter of cylinder is equal to the interior internal diameter for receiving fuel-displaced cylinder section in oily cylinder.Making for whirl cylinder is made to revolve outer barrel and make rotation Inner cylinder is mutually combined and constitutes annular groove, and helical tooth is accommodated in the annular groove, is drilled with along circle on the barrel for making rotation outer barrel Circumferential direction it is evenly distributed and layering jetting hole.Each jetting hole use cylindrical orifice, its axis with make whirl cylinder Axis perpendicular, at the same the hole wall outside in jetting hole is tangent with the inner surface for making rotation outer barrel and hole wall of jetting hole inner side with make rotation The outer ring surface of inner cylinder is tangent, to ensure that production waste can be same along the barrel for making rotation outer barrel with make medial rotation cylinder after being projected by jetting hole When form rotating flow.The outer ring surface of medial rotation cylinder is made using cylinder and inner surface then using the conical surface, in order to by the dehydration of the second level Two grades of fluid after reason are discharged in time.Make rotation outer barrel and make and be machined with sealing pipe screw thread on the barrel on the right side of medial rotation cylinder, and Linked together with outer shaft flow cartridge and interior receipts oil cylinder respectively.

Helical tooth uses spirality rack configurations, overall to be presented annulus profile, the inner cylinder of helical tooth with make medial rotation cylinder Interference fit is used between outer ring surface, and the outer cylinder of helical tooth is then coordinated between the inner surface for making rotation outer barrel using gap, Simultaneously the left side of helical tooth be cut into the plane of two grades of axle flow cartridge axis perpendiculars and with make whirl cylinder annular groove Groove bottom is brought into close contact to realize the positioning of helical tooth.The tooth trace of helical tooth is between the equal helix of a pitch, its backlash The jetting hole of layering is arranged, at the same time the normal plane end face perpendicular to helical tooth tooth trace is somebody's turn to do using the class trapezoidal shape of outer narrow inner width The right edge of normal plane end face uses convex curves, and the left side of normal plane end face then uses notching curve, outside the notching curve Side end it is tangent with the hole wall in jetting hole and meanwhile the inside end of notching curve with make medial rotation cylinder barrel it is tangent, to ensure spiral The intensity of tooth, while making production waste smoothly can be cut on the flank of tooth of helical tooth after being projected by each jetting hole, and ultimately forms Layering eddy flow.

Interior oily cylinder and the outer shaft flow cartridge received uses V-arrangement thick-wall cylinder, and interior receipts oil cylinder is by oil-feed cylinder section, reducing cylinder section and fuel-displaced Cylinder section composition, the inner conical surface of oil-feed cylinder section constantly shrinks, it is ensured that two grades of fluid smoothly receive oil, and the inner conical surface section of reducing cylinder section Area then gradually increases, and the diameter of the reducing cylinder section big end disc of inner conical surface is equal to the internal diameter of fuel-displaced cylinder section, and two grades of fluid slow down By the smoothly discharge of fuel-displaced cylinder section after current stabilization.The inside and outside anchor ring of outer shaft flow cartridge in the form of the face of cylinder and circular conical surface are combined, outward Axle flow cartridge is made up of direct tube section, conical cylinder section wide, narrow conical cylinder section and water output cylinder section successively, and the big end disc of inner conical surface of conical cylinder section wide is straight Footpath is equal to the internal diameter of direct tube section and the diameter of conical cylinder section inner conical surface small end disc wide is then equal to the big end disc of narrow conical cylinder section inner conical surface Diameter, while the diameter of narrow conical cylinder section inner conical surface small end disc be equal to water output cylinder section internal diameter；The taper of conical cylinder section wide is more than The taper of narrow conical cylinder section, and its cone cone then much smaller than narrow conical cylinder section high is high.At the same time, in outer shaft flow cartridge direct tube section axial direction Length is more than the interior fuel-displaced cylinder segment length for receiving oily cylinder, and the taper of conical cylinder section inner conical surface wide then receives oily cylinder less than interior in outer shaft flow cartridge The taper of middle reducing cylinder section male cone (strobilus masculinus), while the taper of narrow conical cylinder section is less than oil-feed cylinder section outer cone in the oily cylinder of interior receipts in outer shaft flow cartridge The taper in face, the flow area for being thus layered eddy flow constantly increases, and it is whole stock high speed rotating flow finally to conflux vertically.

Using squirrel-cage cylinder long construction, the overcoating seawater corrosion prevention layer of entire body implements the to third level dehydrator according to many eddy flow fields Three-level squirrel-cage parallel connection rotational flow advanced treatment of wastewater, remaining oil phase in removing production waste, so as to production waste thoroughly be located Manage into the purified water up to standard of oil content in water, it include three-level dehydration tube, three-level axle flow cartridge, three-level rectifier, three-level oil collecting pipe, Three-level oil exit pipe, upper spacer, lower bolster and three-level drainpipe, wherein, three-level axle flow cartridge and three-level rectifier entire body are using super Two-way stainless steel, the material of three-level dehydration tube is then from stainless steel and inner liner metal ceramics.Three-level dehydration tube uses isometrical heavy wall Cylinder, realizes the buffering of the relatively low production waste stream of oil content in water, and the lower disposed of three-level dehydration tube has Municipal secondary effluent pipe, two grades The inner surface of drainpipe by its Taper Pipe section the conical surface be gradually reduced and be contracted to the cylinder of straight length, and Municipal secondary effluent pipe straight tube Section internal diameter is less than two grades of internal diameters of dehydration tube entrance pipeline section.The upper end of three-level dehydration tube cylinder is by upper spacer and three-level oil collecting pipe Coupled and realized sealing, and its cylinder lower end is coupled with three-level drainpipe by lower bolster and is realized sealing.On every Plate uses plate-like flange, and its middle part is disposed with along the circumferential direction the equidistantly tapped through hole of arrangement, and each tapped through hole is respectively with three Level axle flow cartridge is coupled, while the through hole with cone boss is provided with lower bolster same position, the hole wall difference of each through hole Interference fit is used between three-level axle flow cartridge outer ring surface, realizes three-level axle flow cartridge three jointly from there through upper spacer and lower bolster Positioning in level dehydration tube.

Three-level axle flow cartridge forms squirrel-cage many eddy flow fields construction by the way of many parallel connections, implements the of oil well liquid-producing Three-level advanced treatment of wastewater, the axis of each three-level axle flow cartridge with the axis keeping parallelism of three-level dehydration tube.Each three-level axle stream Cylinder is using standardization and modularized design, and the construction of its each building block is similar to two grades of axle flow cartridges, but three-level axle flow cartridge is adopted With tubulose cylinder long, its number of plies for making whirl cylinder jetting hole and per layer number more than the jetting hole that whirl cylinder is made in two grades of axle flow cartridges Number, and the aperture that it makes whirl cylinder jetting hole is then less than two grades of jetting hole apertures of axle flow cartridge；Helical tooth in three-level axle flow cartridge The number of turns is more than two grades of helical tooth number of turns of axle flow cartridge, and the pitch of its helical tooth is then less than two grades of pitch of axle flow cartridge helical tooth； The cone height of the interior oily cylinder of receipts and each conical surface of outer shaft flow cartridge is all higher than the interior oily cylinder of receipts and outer shaft stream in two grades of axle flow cartridges in three-level axle flow cartridge The cone of the cylinder correspondence conical surface is high, and the taper of oily cylinder and each conical surface of outer shaft flow cartridge then corresponding less than the two grades of axle flow cartridges conical surface is received in it Taper.

Three-level rectifier is embedded in the water output cylinder Duan Bingyu three-level axles flow cartridge of outer shaft flow cartridge bottom in three-level axle flow cartridge one by one Correspondence, axial stationary flow is adjusted to for will process qualified purification current by rotating flow, and three-level rectifier is by fiaring cone and three Level commutator segment composition, the fiaring cone of three-level rectifier is combined into by cone and cylinder, and the cone height of fiaring cone upper cone is less than down The cone of cone is high, and the lower cone of fiaring cone is used to avoid purified water from producing local turbulent after being flowed out by three-level commutator segment, under it The vertex of a cone of cone and the lower surface flush of lower bolster.It is welded on the cylinder of fiaring cone and by interference fit in three-level commutator segment And be external in outer shaft flow cartridge in three-level axle flow cartridge water output cylinder section, be achieved in three-level rectifier determining in three-level axle flow cartridge Position, rotation direction and the rotation direction of three-level flow regulating barrels helical tooth of each three-level commutator segment are consistent, and the piece number of three-level commutator segment is more than one The axial length of quantity and its axial length more than one-level commutator segment of level commutator segment.

Crude oil booster be used for the fluid after dewater treatments at different levels is forced into after identical high-voltage value come together in it is same outer defeated Outer defeated together in the pipe of sea, it includes booster pumps at different levels, oil inlet pipe at different levels, flowline at different levels and outer defeated sea pipe, and booster pumps at different levels are equal Using frequency conversion type screw pump, according to the pressure and the frequency of flow adjust automatically frequency converter of oil inlet pipe inner fluids at different levels, change spiral shell The rotating speed of bar, so as to reach flowline inner fluid pressure unifications at different levels and meet the purpose of outer defeated pressure demand.

One-level booster pump uses the screw rod multiphase mixing transmission pump of frequency conversion type four, its entrance connection one-level oil inlet pipe and outlet connection one Level flowline, four screw rods in one-level booster pump are divided into two groups, and every group of screw rod is integrally formed with axis body, and on every group of screw rod Screw thread arranges that two groups of screw rods use the screw thread at identical material, and two groups of screw rod same positions to revolve along axis body center reverse symmetry To opposite.Two-stage supercharging pump and three-level booster pump use frequency conversion type twin-screw Crude Oil Transportation pump, its entrance to connect two grades respectively Oil inlet pipe and three-level oil inlet pipe and outlet connect two grades of flowlines and three-level flowline, and two-stage supercharging pump and three-level supercharging respectively The two screw rods of pump are also integrally formed and use identical material with axis body, while the thread rotary orientation on two screw rods is opposite.Superchargings at different levels Driving screw rod one end of pump stretches out pump and couples with variable-frequency motor outward and by shaft coupling and provide power, and driving screw rod passes through people Power is transferred to driven screw by font synchromesh gear, tight and between the pump housing with merging in high precision between driving screw rod and driven screw Laminating, and its maximum allowable side-play amount is less than 50% of radial clearance between screw rod and pump housing liner.In addition, booster pumps at different levels are equal Using independent lubrication outboard bearing construction and it is integrated sealflush system, to adapt to underwater State.

Outer defeated sea pipe is connected to by the way of flowlines at different levels are using bend pipe and by circumferential weld, outer defeated extra large pipe uses long tube And match with the model of submarine pipeline, one end of outer defeated extra large pipe is coupled by flange with submarine pipeline, and its other end Cecum flange is then used, is easy to safeguard and cleaning, axis and one-level dehydration tube and the axis phase of three-level dehydration tube of outer defeated extra large pipe Keeping parallelism between mutually.Fluid after three-level dewater treatment, including oil-gas two-phase flow, two grades of fluid and three-level liquid stream are respectively through at different levels Oil inlet pipe enters booster pumps at different levels, is exported and is come together in outer defeated sea pipe, shape by flowlines at different levels after being forced into identical high-voltage value It is outer defeated together after into high pressure live crude.

What the utility model to be reached has the technical effect that, the dehydration device can be organic with subsea manifold and submarine pipeline With reference to, the online installation and operation of submarine pipeline is realized, crude oil and production wastewater treatment facility are moved into water by offshore platform chunk Lower system, can reduce platform floor space and reduce equipment and platform construction weight, while according to the dehydration of three swirler under water system System and equipment, realize that crude oil and production waste integrated treatment and oil gas water are efficiently separated；First order dehydrator is according to column Centrifugation in the cone field of monotubular whirlpool implements first order axial high speed vortex crude oil dewater treatment, big in removing oil well liquid-producing Partial water phase；Second level dehydrator is implemented second level axial stratification eddy flow sewage and is quickly located according to short three eddy flow fields of tubulose Reason, most oil phase in removing production waste；Third level dehydrator implements the third level simultaneously according to many eddy flow fields of squirrel-cage cylinder long Connection eddy flow advanced treatment of wastewater, remaining oil phase in removing production waste；Crude oil booster is by the fluid after dewater treatments at different levels Pressurize and come together in and be outer defeated together in same outer defeated sea pipe.

Brief description of the drawings

The utility model is further described below in conjunction with the accompanying drawings, but the utility model is not limited to following implementation Example.

Fig. 1 is the typical structure letter of the online three swirler dehydration device of submarine pipeline proposed according to the utility model Figure.

Fig. 2 is the structure diagram of first order dehydrator in the online three swirler dehydration device of submarine pipeline.

Fig. 3 is the structure diagram of second level dehydrator in the online three swirler dehydration device of submarine pipeline.

Fig. 4 is two grades of structure diagrams of axle flow cartridge in the online three swirler dehydration device of submarine pipeline.

Fig. 5 is the structure diagram of third level dehydrator in the online three swirler dehydration device of submarine pipeline.

Fig. 6 is the structure diagram of three-level axle flow cartridge and three-level rectifier in the online three swirler dehydration device of submarine pipeline.

Fig. 7 is the structure diagram of the online three swirler dehydration device Crude Oil booster of submarine pipeline.

Fig. 8 is the water-oil separating general flow chart of three swirler under water of the online three swirler dehydration device of submarine pipeline.

1- first order dehydrator in figure, 2- crude oil boosters, 3- second level dehydrator, 4- third level dehydrators, 5- Make swirling body, 6- one-level dehydration tubes, 7- one-level oil collecting pipes, 8- one-level commutator segments, 9- oil extraction bushings, 10- one-level oil extractions Pipe, bis- grades of oil exit pipes of 11-, the left backing plates of 12-, bis- grades of axle flow cartridges of 13-, bis- grades of dehydration tubes of 14-, 15- right clapboards, 16- makes The oily cylinder of receipts in whirl cylinder, 17- helical tooths, 18-, 19- outer shaft flow cartridges, 20- three-level oil exit pipes, 21- three-level oil collecting pipes, 22- upper spacers, 23- three-level axle flow cartridges, 24- three-level dehydration tubes, 25- lower bolsters, 26- three-level rectifiers, 27- three-levels row Water pipe, 28- three-level flowlines, 29- three-level booster pumps, 30- three-level oil inlet pipes, 31- one-level flowlines, the supercharging of 32- one-levels Pump, 33- one-level oil inlet pipes, bis- grades of flowlines of 34-, 35- two-stage supercharging pumps, 36- two-stage oil feeding pipes, the outer defeated sea pipes of 37-.

Specific embodiment

In Fig. 1, the online three swirler dehydration device of submarine pipeline is by first order dehydrator 1, second level dehydrator 3, Three-level dehydrator 4 and crude oil booster 2 are constituted.Pass through between the one-level dehydration tube and well head subsea manifold of first order dehydrator 1 Jumper pipe and flange are coupled, and are coupled by flange between the three-level drainpipe and water delivery manifold of third level dehydrator 4, The outer defeated sea pipe of crude oil booster 2 is coupled with submarine pipeline by flange simultaneously, thus the dehydration device and subsea manifold Organically combined with submarine pipeline, and can realize that submarine pipeline is installed online.Second level dehydrator 3 respectively with first order dehydrator 1 After being linked together with third level dehydrator 4, the axis of three is mutually perpendicular to and the special construction of U-like shape is presented；Crude oil is pressurized The oil inlet pipes at different levels of device 2 by flange respectively with the oil extraction of first order dehydrator 1, second level dehydrator 3 and third level dehydrator 4 Pipe is connected, the three-level of the outer defeated sea pipe, the one-level dehydration tube of first order dehydrator 1 and third level dehydrator 4 of crude oil booster 2 The mutual keeping parallelism of axis of dehydration tube 24.

In Fig. 1, the online three swirler dehydration device of submarine pipeline closes the function of crude oil and production wastewater treatment facility It is integrated, while place's reason offshore platform chunk that sub-sea drilled wells produce liquid is moved into submarine system, and by first order dehydrator 1st, second level dehydrator 3 and the completion three swirler profit of third level dehydrator 4 are efficiently separated.It is qualified net after three-level dewater treatment Change water and enter sea or reinjection into reservoir into water delivery manifold is directly outer by third level dehydrator 4, and live crude is then increased by crude oil The booster pumps at different levels of depressor 2 enter submarine pipeline simultaneously directly after being forced into identical high-voltage value through the outer defeated extra large pipe of crude oil booster 2 It is outer defeated.

In Fig. 1, when the online three swirler dehydration device of submarine pipeline is debugged, pressure test is carried out to whole device first And air-tight test, test pressure need to reach 1.25 times of design pressure；Then whether each pipeline system joint is examined in again There is the switch of leakage and valve whether correct., it is necessary to close inspection first order dehydrator 1 successively when whole dehydration device is safeguarded One-level dehydration tube, the outer defeated sea pipe of crude oil booster 2, two grades of dehydration tubes of second level dehydrator 3 and third level dehydrator 4 Whether there is foreign matter to pile up in three-level dehydration tube, the one-level dehydration tube of first order dehydrator 1, two grades of axle streams of second level dehydrator 3 Whether the three-level axle flow cartridge inwall of cylinder and third level dehydrator 4 have a corrosion, and first order dehydrator 1 makes swirling body and one-level rectification Whether piece, the helical tooth of the helical tooth of second level dehydrator 3 and third level dehydrator 4 and three-level rectifier surface have corrosion, Minimum wall thickness (MINI W.) close to during 1mm, it is necessary to be changed in time；Check that the one-level oil collecting pipe of first order dehydrator 1, the second level take off simultaneously Dirt on the interior receipts oil cylinder of hydrophone 3 and the interior receipts oil cylinder of third level dehydrator 4, it is necessary to carry out necessity when thickness reaches 3mm Flushing.

In fig. 2, the well stream treating capacity of oil well liquid-producing by adjust the barrel dliameter of first order dehydrator 1 or the quantity of parallel connection come Realize, the oil content after first order dewater treatment in production waste bores the taper and axial length of section by the whirlpool of one-level dehydration tube 6 It is adjusted, and the water content after first order dewater treatment in oil-gas two-phase flow is then by the caliber and length of one-level oil collecting pipe 7 It is adjusted, while the model of oil extraction bushing 9 and one-level oil exit pipe 10 is consistent with the caliber of one-level oil collecting pipe 7.Make vortex Being made for the vortex tooth of body 5 and one-level dehydration tube 6 be fixed using interference fit between scroll tube wall, so as to by oil well liquid-producing The rectification that shunting component stock high-speed rotational beam, one-level oil collecting pipe 7 and one-level commutator segment 8 pass through each commutator segment and one-level dehydration tube 6 It is fixed using interference fit between tube wall, one-level commutator segment 8 is by the production waste after first order dewater treatment by revolving Vortex is directly rectified into uniform axially stream.

In figs. 3 and 4, after the first order dewater treatment adjustment of production wastewater treatment amount by changing second level dehydrator Two grades of dehydration tubes 14 and two grades of barrel dliameters of axle flow cartridge 13 are realized in 3, the oil content after the dewater treatment of the second level in production waste By change simultaneously two grades of axle flow cartridges 13 make on whirl cylinder 16 jetting aperture layer number and per layer number, the number of turns of helical tooth 17 and outer The taper and axial length of the conical cylinder section wide of axle flow cartridge 19 and narrow conical cylinder section is adjusted, and two grades of oil after the dewater treatment of the second level Water content in liquid is then adjusted by the interior internal diameter and axial length for receiving oily cylinder 18 each cylinder section.Two grades of axle flow cartridges 13 are led to respectively Cross left backing plate 12 and right clapboard 15 and keep concentric with two grades of dehydration tubes 14, at the same two grades of models of oil exit pipe 11 with make eddy flow The nominal diameter of screw thread is consistent on 16 outer ring surfaces of cylinder.

In fig. 5 and fig., after the dewater treatment of the second level adjustment of production wastewater treatment amount by changing third level dehydrator The barrel dliameter and cylinder number of the barrel dliameter of three-level dehydration tube 24 and three-level axle flow cartridge 23 is realized in 4, qualified after third level dewater treatment Oil content in purified water makes jetting aperture layer number and every layer of hole count, spiral on whirl cylinder by change three-level axle flow cartridge 23 simultaneously The taper and axial length of gear ring number and each conical surface of outer shaft flow cartridge is adjusted, and three-level liquid stream after third level dewater treatment In water content be then adjusted by receiving the internal diameter and axial length of each cylinder section of oily cylinder in three-level axle flow cartridge 23.Three-level axle flow cartridge 23 are evenly arranged in three-level dehydration tube 24 by upper spacer 22 and lower bolster 25 respectively, while three-level oil exit pipe 20 and three-level The model of oil collecting pipe 21 is consistent with the model of three-level drainpipe 27, and three-level rectifier 26 is by three-level commutator segment and three-level axle It is fixed using interference fit between the water output cylinder section barrel of outer shaft flow cartridge in flow cartridge 23, while three-level rectifier 26 will be net Change water and axial stationary flow is adjusted to by rotating flow.

The pressure and flow of oil-gas two-phase flow, two grades of fluid and three-level liquid stream in the figure 7, after three swirler dewater treatment Respectively by adjust one-level booster pump 32, the rotating speed of two-stage supercharging pump 35 and three-level booster pump 29 and be forced into identical high-voltage value, Wherein oil-gas two-phase flow through one-level oil inlet pipe 33 be input into one-level booster pump 32 and it is pressurized after exported by one-level flowline 31, two Level fluid is input into two-stage supercharging pump 35 and pressurization through two-stage oil feeding pipe 36 and is exported by two grades of flowlines 34, and three-level liquid stream is then It is input into three-level booster pump 29 and pressurization through three-level oil inlet pipe 30 and is exported by three-level flowline 28, final three strands of fluid comes together in The live crude of whole stock is formed in outer defeated extra large pipe 37.

In fig. 8, the water-oil separating flow of three swirler under water of the online three swirler dehydration device of submarine pipeline is, oil well Produce liquid to be entered in one-level dehydration tube 6 by well head subsea manifold and jumper pipe, share split high-speed rotational beam is formed through making swirling body 5, and Vortex is produced after being projected along the barrel tangential tilt of one-level dehydration tube 6, is then proceeded to push ahead and is kept rotating at a high speed, whirlpool cone In oil-gas two-phase flow gradually migrate to one-level dehydration tube 6 central part and be axially advanced into the rectifying tube of one-level dehydration tube 6 Enter in one-level oil collecting pipe 7 after pipeline section, then flow through oil extraction bushing 9, one-level oil exit pipe 10 and one-level oil inlet pipe 33 successively and enter one Level booster pump 32, is exported and is come together in outer defeated extra large pipe 37 after pressurization by one-level flowline 31, and oil content production higher is dirty Water then imports one-level commutator segment 8 along the barrel of one-level dehydration tube 6, is rectified into the one-level through one-level dehydration tube 6 after uniform axial direction is flowed Drainpipe enters two grades of dehydration tubes 14, and thus oil well liquid-producing completes first order axial high speed vortex crude oil through first order dehydrator 1 Dewater treatment.After oil content production waste higher is fully buffered in two grades of dehydration tubes 14 after first order dewater treatment, through two The jetting hole on whirl cylinder 16 is made in level axle flow cartridge 13 and helical tooth 17 forms layering eddy flow, two grades of outer shaft flow cartridges of axle flow cartridge 13 It is whole stock high speed rotating flow that layering eddy flow is axially advanced and confluxed in 19, and the relatively low production waste of oil content gets rid of in eddy flow field reclaimed water Enter three-level dehydration tube 24 to barrel and through the Municipal secondary effluent pipe of three-level dehydration tube 24, and two grades of fluid are then progressively migrated to two grades The central part of axle flow cartridge 13 simultaneously reversely rises, and oily 18, the two grades of oil exit pipes 11 of cylinder of interior receipts is flowed through successively and two-stage oil feeding pipe 36 enters Enter two-stage supercharging pump 35, exported and come together in outer defeated extra large pipe 37 by two grades of flowlines 34 after pressurization, thus oil well liquid-producing is through Two grades of dehydrators 3 complete second level axial stratification eddy flow sewage and quickly process.The relatively low life of oil content after the dewater treatment of the second level Produce sewage to pass through in the three-level dehydration tube 24 after buffering, while into the multi-cartridge three-level axle flow cartridge 23 of parallel connection, being initially formed layering Eddy flow and to conflux be whole stock high speed rotating flow after axially propulsion is accelerated, ultimately forms many eddy flow fields of squirrel-cage, is closed in eddy flow field The purified water of lattice is got rid of to the barrel of three-level axle flow cartridge 23 and after being adjusted to axial stationary flow through three-level rectifier 26 by three-level drainpipe 27 converge in water delivery manifolds, and three-level liquid stream then progressively migrate to three-level axle flow cartridge 23 central part and reversely rise, successively Interior receipts oil cylinder, three-level oil collecting pipe 21, three-level oil exit pipe 20 and the three-level oil inlet pipe 30 for flowing through three-level axle flow cartridge 23 enter three-level increasing Press pump 29, is exported and is come together in together with the oil-gas two-phase flow of identical high-voltage value and two grades of fluid after pressurization by three-level flowline 28 Carry out outer defeated in outer defeated extra large pipe 37, thus oil well liquid-producing completes third level squirrel-cage parallel connection rotational flow sewage through third level dehydrator 4 Advanced treating.

The various embodiments described above are merely to illustrate the utility model, wherein the structure of each part, connected mode etc. all can be It is varied from, every equivalents carried out on the basis of technical solutions of the utility model and improvement should not be excluded Outside the utility model protection domain.

Claims (9)

1. a kind of online three swirler dehydration device of submarine pipeline, organically combines with subsea manifold and submarine pipeline, realizes seabed The online installation and operation of pipeline, while according to three swirler dewatering system and equipment under water, completing crude oil and production waste integrally Change treatment, oil gas water are efficiently separated and the treatment of production waste fast deep, it is characterised in that：

One first order dehydrator；The first order dehydrator is constructed using column monotubular, and first order axial direction is implemented according to whirlpool cone field High-speed eddy crude oil dewater treatment, makes the vortex cone and vortex wheel of swirling body by same material one cutting forming, in vortex wheel The tooth trace for being vortexed tooth uses build-up curve, and the width for being vortexed tooth is from top to bottom gradually widened；Scroll, whirlpool cone are made in one-level dehydration tube The axial length of pipe and rectifying tube increases successively, and triplet type oil exit pipe is set between rectifying tube and one-level drainpipe, and by oil extraction Bushing is coupled with one-level oil exit pipe；One-level oil collecting pipe is located at the central part of rectifying tube in one-level dehydration tube, and it uses 90 ° Equal-diameter elbow；The rotation direction of each commutator segment is identical and the rotation direction with each vortex tooth in vortex wheel keeps one respectively in one-level commutator segment Cause, the contour line of each commutator segment is arc and the combined spin line of straightway, and the thickness of each commutator segment is along its contour line The straightway holding that arc gradually increases then along its contour line is constant；

One second level dehydrator；The second level dehydrator implements second level axle using short three constructions of tubulose according to eddy flow field Quickly processed to layering eddy flow sewage, two grades of dehydration tubes use axis and the one-level of reducing tee core structure, its cylinder to be dehydrated The axis of cylinder and three-level dehydration tube is in same plane and three axis are arranged vertically each other, integrally shows the spy of U-like shape Different structure；Left backing plate uses plate-like flange, and its central inner ring surface is connected using tapped through hole and with two grades of axle flow cartridges, while right Interference fit between the through hole of baffle central and two grades of axle flow cartridge outer ring surfaces, realizes two grades of axle flow cartridges in two grades of dehydration tubes jointly Positioning；Two grades of axle flow cartridges use split type double-barrel structure, its axis to be overlapped with the axis of two grades of dehydration tubes, be consequently formed by interior The special tectonic of outer three-cylinder concentric arrangement；Make whirl cylinder and be designed as the inside and outside bitubular, make rotation outer barrel and be mutually combined simultaneously with medial rotation cylinder is made Annular groove is constituted, helical tooth is accommodated in the annular groove, be drilled with the barrel for making rotation outer barrel along the circumferential direction evenly distributed And the jetting hole of layering, the outer ring surface for making medial rotation cylinder then uses the conical surface using cylinder and inner surface；Helical tooth uses spiral-shaped teeth Bar is constructed, overall that annulus profile is presented, and the tooth trace of helical tooth is that layering is arranged between the equal helix of a pitch, its backlash Jetting hole, the normal plane end face both perpendicular to helical tooth tooth trace uses the class trapezoidal shape of outer narrow inner width；It is interior to receive oily cylinder and outer shaft stream Cylinder uses V-arrangement thick-wall cylinder, the taper of the taper more than narrow conical cylinder section of conical cylinder section wide in outer shaft flow cartridge, and its cone is high then remote small It is high in the cone of narrow conical cylinder section；

One third level dehydrator；The third level dehydrator implements the third level using squirrel-cage cylinder construction long according to many eddy flow fields Squirrel-cage parallel connection rotational flow advanced treatment of wastewater, three-level dehydration tube uses isometrical thick cylinder, and its underpart is disposed with Municipal secondary effluent pipe, three Under the upper end of level dehydration tube cylinder is coupled with three-level oil collecting pipe by upper spacer and is realized sealing, and its cylinder lower end passes through Backing plate is coupled with three-level drainpipe and is realized sealing；It is many that three-level axle flow cartridge forms squirrel-cage by the way of many parallel connections Eddy flow field is constructed, the axis of each three-level axle flow cartridge with the axis keeping parallelism of three-level dehydration tube, each three-level axle flow cartridge adopts With standardization and modularized design, the construction of its each building block is similar to two grades of axle flow cartridges, but three-level axle flow cartridge uses tubulose Cylinder long；Three-level rectifier is embedded in a pair of the water output cylinder Duan Bingyu three-level axles flow cartridge 1 of outer shaft flow cartridge bottom in three-level axle flow cartridge Should, its fiaring cone is combined into by cone and cylinder, and rotation direction and the three-level flow regulating barrels helical tooth of its each three-level commutator segment rotation To being consistent；

One crude oil booster；The one-level booster pump of the crude oil booster uses the screw rod multiphase mixing transmission pump of frequency conversion type four, its entrance Connection one-level oil inlet pipe and outlet connection one-level flowline, four screw rods in one-level booster pump are divided into two groups, every group of screw rod and axle Body is integrally formed, and screw thread on every group of screw rod is arranged along axis body center reverse symmetry；Two-stage supercharging pump and three-level booster pump Frequency conversion type twin-screw Crude Oil Transportation pump is used, its entrance connects two-stage oil feeding pipe and three-level oil inlet pipe respectively and outlet connects respectively Two grades of flowlines and three-level flowline are connect, and the two screw rods of two-stage supercharging pump and three-level booster pump are also integrally formed and adopt with axis body Use identical material；Oil-gas two-phase flow, two grades of fluid and three-level liquid stream after three-level dewater treatment enter through oil inlet pipes at different levels respectively Booster pumps at different levels, are exported and are come together in outer defeated sea pipe, the axle of outer defeated extra large pipe after being forced into identical high-voltage value by flowlines at different levels Line and the mutual keeping parallelism of the axis of one-level dehydration tube and three-level dehydration tube.

2. the online three swirler dehydration device of submarine pipeline according to claim 1, it is characterised in that：The first order takes off Hydrophone makes swirling body positioned at the porch of one-level dehydration tube, and it is made up of vortex cone and vortex wheel, the upper cone of vortex cone cone Taper of the degree more than lower cone；Vortex wheel is made up of 16~24 vortex teeth, and the axial length of each vortex tooth is equal to vortex Bore the height of intermediate cylinder, the tangent line on vortex tooth tooth trace top and the axis keeping parallelism of vortex cone, and its tooth trace slope by It is sequentially reduced under above, the slope of tooth trace bottom is 15 °~20 °；The height for being vortexed tooth is equal to the interior of one-level dehydration tube porch The difference of surface diameter and vortex cone intermediate cylinder outer ring surface diameter, and be vortexed tooth upper bevel and cut into the semicircle conical surface, institute The semicircle conical surface for having vortex tooth is in being overlapped on the same conical surface and with the conical surface of vortex cone upper cone；Tooth where between vortex tooth The area of section of gap constantly reduces, and the oil well liquid-producing flow velocity for flowing through vortex tooth backlash is able to constantly lift and ultimately form rotation at a high speed Projected after a fluid stream；

The one-level dehydration tube of the first order dehydrator is mutually tied using the face of cylinder using thick-wall cylinder and its inner surface with circular conical surface The form of conjunction, one-level dehydration tube is constituted by making scroll, whirlpool Taper Pipe, rectifying tube, triplet type oil exit pipe and one-level drainpipe successively, whirlpool The diameter of the diameter of the big end disc of Taper Pipe inner conical surface whirlpool Taper Pipe inner conical surface small end disc equal to the internal diameter for making scroll is then equal to whole The internal diameter of flow tube and one-level drainpipe；Make and realize making whirlpool using interference fit between the tube wall of scroll and the crest top land of vortex tooth The positioning of fluid, while realizing one-level commutator segment using interference fit between the piece top surface of the tube wall of rectifying tube and each commutator segment Positioning.

3. the online three swirler dehydration device of submarine pipeline according to claim 1 and 2, it is characterised in that：Described first The one-level oil collecting pipe of level dehydrator collects after the first order dewater treatment oil-gas two-phase flow containing a small amount of water and is conducted into one in time Level oil exit pipe, end face where the initiating terminal of one-level oil collecting pipe is cut into coniform, and the taper of the initial end face is equal to one-level The taper of whirlpool Taper Pipe in dehydration tube, the axis of one-level oil-collecting pipe end and the axis weight of triplet type oil exit pipe in one-level dehydration tube Close；Cylinder diameter in oil extraction sleeve inner surface is equal to the internal diameter of one-level oil collecting pipe, and the conical surface in oil extraction sleeve inner surface is big End disc diameter is then equal to the diameter of the one-level oil exit pipe inside big end disc of the conical surface in one-level dehydration tube；

The one-level commutator segment of the first order dehydrator is made up of 8~16 chip architecture identical commutator segments, and one-level commutator segment passes through The mode of circumferential weld and interior be connected to one-level oil collecting pipe；On the recessed and lower camber line of upper camber line in the contour line arc of each commutator segment It is convex, and the tangent line of upper camber line initiating terminal and the tangent line of lower camber line end keep flat between the axis of one-level dehydration tube in arc OK, the thickness of each commutator segment in the arc on the initiating terminal of camber line be punctured into an oblique line and reached in the end of lower camber line It is maximum.

4. the online three swirler dehydration device of submarine pipeline according to claim 1, it is characterised in that：The second level takes off The inlet tube section of two grades of dehydration tubes is located at the middle part of second level dehydrator in hydrophone, and its entrance pipeline section internal diameter is less than two grades The internal diameter of dehydration tube, and it is equal to the internal diameter of one-level drainpipe in one-level dehydration tube；

Two grades of axle flow cartridges of the second level dehydrator include making whirl cylinder, helical tooth, interior receipts oil cylinder and outer shaft flow cartridge, make eddy flow The rotation outer barrel wall thickness of making of cylinder is equal to the wall thickness of outer shaft flow cartridge, and the wall thickness for making medial rotation cylinder then receives the wall thickness of oily cylinder equal to interior, and makes The inside conical surface small end disc diameter of medial rotation cylinder is equal to the interior internal diameter for receiving fuel-displaced cylinder section in oily cylinder；Make each on rotation outer barrel barrel Jetting hole use cylindrical orifice, its axis with the axis perpendicular for making whirl cylinder, while jetting hole hole wall outside with The inner surface for making rotation outer barrel is tangent and hole wall of jetting hole inner side is tangent with the outer ring surface for making medial rotation tin.

5. the online three swirler dehydration device of submarine pipeline according to claim 1 or 4, it is characterised in that：Described two grades Use interference fit between the inner cylinder of the helical tooth of axle flow cartridge and the outer ring surface for making medial rotation cylinder, and the outer cylinder of helical tooth then with Make rotation outer barrel inner surface between using gap coordinate, while the left side of helical tooth is cut into and two grades of axle flow cartridge axis phases Vertical plane is simultaneously brought into close contact with the groove bottom for making whirl cylinder annular groove；Perpendicular to the normal plane end face right side of helical tooth tooth trace While convex curves are used, and the left side of its normal plane end face then uses notching curve, the outside end and jetting of the notching curve The hole wall in hole is tangent while the inside end of notching curve is tangent with the barrel for making medial rotation cylinder.

6. the online three swirler dehydration device of submarine pipeline according to claim 1 or 4, it is characterised in that：Described two grades The interior receipts oil cylinder of axle flow cartridge is made up of oil-feed cylinder section, reducing cylinder section and fuel-displaced cylinder section, and the inner conical surface of oil-feed cylinder section constantly shrinks, and The inner conical surface area of section of reducing cylinder section then gradually increases, and the diameter of the reducing cylinder section big end disc of inner conical surface is equal to fuel-displaced cylinder section Internal diameter；

The outer shaft flow cartridge of two grades of axle flow cartridges is made up of direct tube section, conical cylinder section wide, narrow conical cylinder section and water output cylinder section successively, cone wide The big end disc diameter of inner conical surface of cylinder section is equal to the internal diameter of direct tube section and the diameter of conical cylinder section inner conical surface small end disc wide is then equal to The diameter of the narrow big end disc of conical cylinder section inner conical surface, while the diameter of narrow conical cylinder section inner conical surface small end disc is equal to the interior of water output cylinder section Footpath；

The axial length of direct tube section is more than the interior fuel-displaced cylinder segment length for receiving oily cylinder in the outer shaft flow cartridge of two grades of axle flow cartridges, and outer The taper of conical cylinder section inner conical surface wide is then less than the interior taper for receiving reducing cylinder section male cone (strobilus masculinus) in oily cylinder in axle flow cartridge, while outer shaft flow cartridge In narrow conical cylinder section taper less than the interior taper for receiving oil-feed cylinder section male cone (strobilus masculinus) in oily cylinder, the flow area for being thus layered eddy flow is continuous Increase.

7. the online three swirler dehydration device of submarine pipeline according to claim 1, it is characterised in that：The third level takes off The three-level dehydration tube of hydrophone realizes the buffering of the relatively low production waste stream of oil content in water, and Municipal secondary effluent pipe is interior in three-level dehydration tube Surface is gradually reduced and is contracted to the cylinder of straight length by the conical surface of its Taper Pipe section, and the inside diameter of straight pipe section of Municipal secondary effluent pipe is less than Two grades of internal diameters of dehydration tube entrance pipeline section；

The upper spacer of the third level dehydrator uses plate-like flange, and equidistantly row is disposed with along the circumferential direction in the middle part of upper spacer The tapped through hole of row, each tapped through hole is coupled with three-level axle flow cartridge respectively, while being provided with band at lower bolster same position The through hole of cone boss, the hole wall of each through hole uses interference fit between three-level axle flow cartridge outer ring surface respectively, on every Plate and lower bolster realize positioning of the three-level axle flow cartridge in three-level dehydration tube jointly.

8. the online three swirler dehydration device of submarine pipeline according to claim 1, it is characterised in that：The third level takes off The three-level axle flow cartridge of hydrophone is used for implementing the third level advanced treatment of wastewater of oil well liquid-producing, and whirl cylinder jetting is made in three-level axle flow cartridge The number of plies in hole and every layer number are more than the jetting hole count that whirl cylinder is made in two grades of axle flow cartridges, and it makes the hole in whirl cylinder jetting hole Footpath is then less than two grades of jetting hole apertures of axle flow cartridge；The number of turns of helical tooth is more than two grades of helical tooths of axle flow cartridge in three-level axle flow cartridge The number of turns, and the pitch of its helical tooth is then less than two grades of pitch of axle flow cartridge helical tooth；It is interior in three-level axle flow cartridge to receive oily cylinder and outer shaft The interior cone for receiving the oily cylinder conical surface corresponding with outer shaft flow cartridge is high during the cone height of each conical surface of flow cartridge is all higher than two grades of axle flow cartridges, and oil is received in it Cylinder and the taper of each conical surface of outer shaft flow cartridge are then less than the taper of the corresponding conical surface of two grades of axle flow cartridges；

The three-level rectifier of the third level dehydrator is made up of fiaring cone and three-level commutator segment, on the fiaring cone of three-level rectifier The cone cone less than its lower cone high of cone is high, and the vertex of a cone and the lower bolster of fiaring cone lower cone lower surface flush；Three-level It is welded in commutator segment on the cylinder of fiaring cone and the water output cylinder of outer shaft flow cartridge in three-level axle flow cartridge is external in by interference fit Section, quantity and its axial length axial length more than one-level commutator segment of the piece number more than one-level commutator segment of three-level commutator segment.

9. the online three swirler dehydration device of submarine pipeline according to claim 1, it is characterised in that：The crude oil supercharging Two groups of screw rods of the one-level booster pump in device use the thread rotary orientation at identical material, and two groups of screw rod same positions conversely, two Thread rotary orientation in level booster pump and three-level booster pump on two screw rods is opposite；The driving screw rod of booster pumps at different levels passes through herringbone Power is transferred to driven screw by synchromesh gear, is matched somebody with somebody to merge in high precision between driving screw rod and driven screw and is closely pasted and between the pump housing Close, booster pumps at different levels using individually lubrication outboard bearing construction and integrated sealflush system；

Outer defeated sea pipe is connected to by the way of the flowlines at different levels of the crude oil booster are using bend pipe and by circumferential weld, it is outer defeated Extra large pipe is coupled by flange using long tube and its one end with submarine pipeline, and its other end then uses cecum flange.