CN106439137A - Low shearing plunger type throttling valve used for oil production gathering and transporting - Google Patents
Low shearing plunger type throttling valve used for oil production gathering and transporting Download PDFInfo
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- CN106439137A CN106439137A CN201610899014.0A CN201610899014A CN106439137A CN 106439137 A CN106439137 A CN 106439137A CN 201610899014 A CN201610899014 A CN 201610899014A CN 106439137 A CN106439137 A CN 106439137A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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Abstract
The invention discloses a low shearing plunger type throttling valve used for oil production gathering and transporting. Based on a rotational flow agglomeration and unit mass energy dissipation rate control technology, orifices of a valve cage are designed to be in the tangential direction, a rotational flow chamber which is converged firstly and expanded afterwards is connected behind the orifices, the basic function of flow and pressure adjustment can be achieved on the plunger type throttling valve, meanwhile, the velocity gradient and the turbulence energy dissipation rate in a flow field are reduced, the shearing force of the orifices for fluid is reduced, the liquid drop breaking degree is lowered, and the subsequent oil water separation difficulty is lowered.
Description
Technical field
The present invention relates to the defeated field of oil extraction collection；The defeated use low sheraing plunger type throttling of more particularly, to a kind of oil exploitation collection
Valve.
Background technology
With the continuous development of social economy, energy-output ratio will be increasing.In following 20 years, based on oil
Traditional fossil energy will occupy an leading position, each major oil companies of the world also therefore have to continue increase petroleum exploration and development
Dynamics.With the gradually growth of recovery time, the moisture content in Ge great main force oilfield Produced Liquid is also gradually rising, mesh
In the range of former world, more than 80%, some even already exceed 95% to the average moisture content of oil well produced liquid.Oil well produced water
Increasing considerably of amount, brings extreme shock to oil-gas gathering and transferring technology flow process, especially increases follow-up oil-water separation difficulty.
In oil extraction and oil-gas gathering and transportation engineering field, either at oil well produced fluid dewatering or follow-up oil-polluted water
Reason, is all faced with the continuous problem pursued and improve oil-water separation efficiency.In general, conventional oily water separation technique relies on mostly
Sedimentation principle in gravitational field or centrifugal force field, according to Stokes formula, dispersed phase drop particle diameter is to separation efficiency shadow
Ring maximum, the degree of crushing therefore mitigating dispersed phase drop between tree and the defeated processing equipment of subsequent set from shaft bottom to wellhead tree is
Improve the key of oil-water separation efficiency.Choke valve as the key element adjusting oil mixing with water logistics capacity and pressure, by more wide
Install and use in wellhead tree tree and gathering line etc. generally.Choke valve can be divided into fixed and adjustable two kinds, fixed
Choke valve passes through the constant aperture element throttling oil nozzle within replacing, to reach the purpose adjusting pressure reduction and controlling flow,
Although having the advantages that flow-control is accurate, throttle steady, complex operation.Adjustable throttle valve can be divided into pin by version
Formula choke valve, hole plate type throttle valve, plunger-type throttle valve and exterior sliding bush type choke valve, wherein latter two choke valve are often also united
Referred to as cage choke valve, or it is known respectively as interior cage shell type or outer cage type throttling valve.Comparatively, needle-type throttle valve and plunger
At present application is more for formula choke valve, but needle-type throttle valve exists and is easily washed that damage, service life is short, flow-control is not smart
The vibrations deficiency such as unstable greatly when really, throttling, therefore in recent years, plunger-type throttle valve due to its control accurately, throttling steadily,
The advantages of easy to operate, rational in infrastructure and obtained increasingly being widely applied, and in the higher oil field of some well head pressures
Especially under water in wet-type christmas tree, often it is prioritized selection.Certainly, no matter adopt what type of choke valve, and
Its common feature is all to adjust flow and pressure by changing circulation area, is all inevitably present strong in the course of the work
Strong emulsification pretreatment effect, leads to the dispersed phase drop in well head Produced Liquid to crush, forms w/o type or O/W type emulsion, increase
The difficulty of oil-water separation, makes the follow-up oil water separation process be difficult to efficiently carry out, and often volume is larger for corresponding processing equipment, place
Reason medicament usage amount often remains high.
In view of choke valve gradually causes stone realizing the simultaneously adjoint emulsification pretreatment negative effect of reducing pressure by regulating flow Core Feature
Oil exploitation and the concern of oil-gas gathering and transportation practitioner, some scientific research institutions such as TU Delft of western developed country
(Delft) university, IFP (IFP) in phase late 1990s to the early 21st century or even have built special
Experimental provision, has carried out experimentation for representative to its emulsification pretreatment mechanism to orifice throttle class flow passage structure, but has failed there is pin
Property is proposed to solve preventive measure.Mechanism general cognition degree grow up with crushing to dispersed phase drop to diminish and coalesce not
Disconnected intensification, part oil company of European and American developed countries or equipment supplier start to be devoted to studying low sheraing throttling fall nearly ten years
Pressure technology, has successfully developed low sheraing choke valve product at present, its essence is and manages to make to cut suffered by dispersed phase drop
Shear force reduces or the broken dispersed phase drop diminishing is coalesced again grows up.Wholly-owned subsidiary under Shell oil company
Twister BV developed first generation spiral vortex type well head low sheraing choke valve (Swirl Valve) in 2007, for sky
So promote gas dehydration characteristic in gas recovery process, in September, 2008 replaces J-T valve (Joule-Thomson throttle expansion valve) and exists
The success of gas well field test, and failure-free operation, more than two months, has been additionally carried out live reliability detection.The said firm
M.R.A. Te Haer, Z. irrigate Parker mention a kind of tapered pole plug choke valve in patent WO2011/014059, by piston body,
Valve cage, valve rod, piston rod, valve body, black box etc. form, by rotation valve rod, the gear driven piston rod on valve rod, piston
Bar drives piston body to move, piston body adjust valve cage circulate throttle orifice opening and closing number adjusting flow.Have multiple non-on valve cage
Radial arrangement and the tangential throttle orifice tangent with valve cage concentric circular, by reducing the gross pressure of eddy flow core, reduce flow of fluid
During shear rate, with the overcrushing avoiding droplets from.As a whole, this tapered pole plug choke valve is substantially directed to
The broken coalescence of dispersed phase drop during gas-liquid separation, rather than in oil water separation process dispersed phase drop broken with
Coalescence.
The Trygve of Stavanger university of Norway is during it does one's doctorate around hydrocyclone and cyclonic separation
Further investigation carried out by device, subsequently sets up Typhonix company, and with Duo Jia oil company and oil equipment company R ＆ D Cooperation
A kind of novel plunger-type choke valve spiral-flow type valve (Cyclonic Valve), and in Den Norske Stats Oljeselskap a.s. (Statoil Group)
(Statoil) the multiphase flow experiment base being located at Porsgrunn has successfully passed principle prototype test, then with world-famous valve
The cooperation of Mokveld company of pupil's business men Holland, develops low sheraing " typhoon (Typhoon) " system, and have developed low sheraing axle
Streaming choke valve and low sheraing Angle Throttle Valves.The said firm proposes a kind of new orifice plate in patent WO2010/02741A1
Formula choke valve, is made up of valve body, cylinder entrance cavity, spin chamber, up-hole plate, orifice plate, valve rod, black box, mainly passes through rotation
Rotating valve rod drives up-hole plate to move forward and backward, thus adjust throttle orifice on orifice plate to be opened and closed number to adjust flow, on its orifice plate
Throttle orifice be tangential hole, and in its exit connection spin chamber, straightener(stator) blade is installed behind spin chamber.From structure chart appended by patent
From the point of view of, this choke valve adopts upper and lower two-layer well plate format, and oil water mixture passes through it is easy to block throttle orifice thereon during orifice plate,
Shearing force herein is bigger than normal compared with monolayer orifice plate；And throttle valve body be single valve body structure, not easy to assemble, be not easily cleaned and
Maintenance.In view of the shortcoming of orifice-plate type throttling control valve, the said firm proposes a kind of new in patent US2011017306A1 again
Plunger-type throttle valve, be made up of cylinder entrance cavity, spin chamber, valve cage, piston rod, valve rod, valve body, black box, by rotation
Rotating valve rod band piston moves, thus adjusting the opening and closing number of throttle orifice on valve cage to adjust flow, its valve cage throttle orifice adopts
Tangential hole, and in valve cage exit connection spin chamber, straightener(stator) blade is installed behind spin chamber.From the point of view of structure chart appended by patent, should
Choke valve is made up of single valve body, not easy to install, and is unfavorable for maintenance and cleaning；And the straightener(stator) blade installed is eliminating rotation thereafter
During stream, certain shearing force also can be produced to oil water mixture, indirectly cause Oil Droplet Breakup.U.S. Cameron
JosephMin-HsiunLee the and Gary W.Sams of International company proposes in US9328856 and uses blood pressure lowering
The method that equipment improves downstream oil-water separation performance, corresponding decompression device can be water base hydrocyclone or the underflow of a band
Mouthful and the hydrocyclone modification without overhead stream mouth, make dispersion phase particle water be easier to coalesce based on hydraulic cyclone effect
And be not easily formed emulsion, thus promote the oil-water separation of downstream separation equipment.But, there is still a need for using conventional in system
Choke valve, under the collective effect of choke valve and hydraulic cyclone formula decompression device play pressure adjustment effect, cause system group
Become to complicate.
Domestic aspect, not yet open find for oil exploitation and collection defeated during oil mixing with water logistics capacity and pressure adjust
Save research papers data and the product of low sheraing choke valve.Southwest Petrol University Li Rui admire et al. in patent
A kind of bilayer cage set double plunger cage choke valve is mentioned, it is mainly by base, double-deck cage set, piston in ZL201310270350.5
The groups such as packing box, outer piston head, piston head, outer valve rod, inner valve stem, piston, stem packing box, outer press cover, internal gland, valve body
Become, outer layer cage cover left end be evenly equipped with multiple rows of throttle orifice in the radial direction, internal layer cage cover right-hand member also equal in the radial direction
It is furnished with multiple rows of throttle orifice, the throttle orifice that outer layer cage set is put with internal layer cage mutually staggers in radial directions.By making high pressure gas
Body enters volume enlarged area twice, reduces pressure, adjusts ectonexine throttle orifice area of passage by inside and outside piston assembly and adjusts
Gas flow, overcomes the problem adopting many choke valve successive blood pressure lowerings in high-pressure well mouth gas production, reduces making of non-easy worn part
With.But it is mainly used in natural gas extraction field, and does not account for cage and put the shear action for fluid for the throttle orifice.By
Obtain relatively broad application in polymer flooding intensified oil reduction (EOR) technology in Daqing oil field, Shengli Oil Field, in order to avoid poly-
Compound injection process is interrupted the molecular weight polymers for short chain, industry people because of the macromolecule polyalcohol that shearing-crushing causes long-chain
Scholar proposes the Structural design idea that polymer injects flow-control and distribution low sheraing valve.For example, former Henan Oil Field planning
Designing institute yellow pine et al. proposes a kind of cone valve style low shear flow controller in patent ZL98214357.5, and the venturi of valve body is
The Venturi tube of column type, valve element is tapered, and valve rod outer wall is contrary with the thread rotary orientation of inside groove, two kinds of screw threads respectively with upper and lower
Briquetting connects.When valve rod rotates, upper lower lock block move toward one another, realize Flow-rate adjustment.Shengli Oil Field prospective design academy opens and builds
Et al. mention a kind of low sheraing flow control valve in patent ZL01216139.X, by valve body, valve gap, valve rod, valve element, on push
Block, adjusting rod etc. form, and are lined with, in import to the outlet section of valve body, the Venturi tube that venturi is column type and cover valve element, under adjusting rod
Portion's pin is connected with upper holder block, the relative motion that upper lower lock block produces when the rail groove in valve body is rotated by valve rod with
Lower reciprocating motion.And posttension is built et al. and to be proposed a kind of diaphragm type low-shearing flow regulation valve in patent ZL01216134, by
Valve body, valve gap, valve element and governor motion composition, runner is venturi-shaped, and throatpiston is square, and venturi top is flexibility
Film, valve element is semiellipse curved, and front-back is in fan-shaped plan, is slidably matched with square venturi；Above venturi exit and valve
It is provided with pressure compensation opening in the square column body of body top, make low sheraing Flow-rate adjustment convenient, flexible, decrease turbulent shear and polymer
Viscosity loss, but diaphragm type low-shearing flow regulation valve is only used for flow in polymer injection process in petroleum industry and adjusts
Section, for pressure regulation without reference to.Oil Mined Technology Research Inst., Shengli Oil Field's Zhao Jian cutting edge of a knife or a sword, Li Shiwen et al. are in patent
A kind of low sheraing flow control valve is proposed, including valve body, exit catch cap, regulation ring, right gear cap, tune in ZL201020579853.2
Pole, pressure cap, the first valve element, the second valve element, the 3rd valve element, the 4th valve element, the 5th valve element, using the conical surface between valve element and valve element
Cone match state between the distance of cooperation and adjusting rod change regulation ring and valve element and valve element, imports and exports pressure to change polymer
The structure of difference, flow adjustment range is big, size is little, installation is simple, for polymer flooding flow-control.Yu Jinhai, pond love literary composition etc.
People proposes a kind of low sheraing regulating valve in patent ZL201310447168.2, and including valve body and adjusting means, it mainly passes through
Rotating regulation handle feed screw nut can drive adjusting rod to move forward and backward, thus realizing adjusting by changing the cross-sectional area of runner
The function of amount of restriction, shearing force is less, does not interfere with the using effect of injection solution.But it will be apparent that above-mentioned, these are special
Avoiding polymer solution shear chain scission and avoid oil water mixture shear cracking action and there is essential difference involved by profit
Not it is impossible to reference uses.
In view of this it is necessary to learn from other's strong points to offset one's weaknesses, based on Cyclone Coalescence Technique and Energy Dissipation Rate Per Unit Mass control technology,
Design that a kind of oil exploitation collection easy to process, simple to operate is defeated to use low sheraing choke valve, controlling the same of flow and pressure
When reduce shear cracking action to oil water mixture, reduce mean unit mass-energy dissipative shock wave, thus increasing disperse phase liquid
Drip particle diameter, reduce oil-water emulsion degree, improve follow-up oil-water separation efficiency.
Content of the invention
It is an object of the invention to provide a kind of oil exploitation collection is defeated uses low sheraing plunger-type throttle valve, Main Function is to adjust
The flow of fuel-economizing aqueous mixtures and pressure, reduce the shear cracking action to oil water mixture for the throttle orifice, increase dispersed phase drop
Particle diameter, improves follow-up oil-water separation efficiency.
The purpose of the present invention is to be achieved through the following technical solutions：
(corresponding with claim).
As seen from the above technical solution provided by the invention, on the one hand, based on Cyclone Coalescence Technique, by low sheraing post
Plug choke valve valve cage hole is designed as tangential throttle orifice, and tangent with the concentric circular of valve cage, fluid is by the section of identical tangential direction
After discharge orifice, form coherent swirling motion in valve cage, fluid flow direction is consistent, reduce velocity gradient, reduce in flow field
Random eddying motion, and the gross pressure of eddy flow core is gradually reduced along flow path, so can reduce in flow process
Shear rate, it is to avoid the overcrushing of drop, and the centrifugal force during eddy flow makes the dispersed phase drop of small particle concentrate, and promotes
Coalescence between dispersed phase drop.On the other hand, there is no spin chamber after conventional plunger formula choke valve valve cage, that is, fluid passes through throttling
It is directly entered subsequent pipeline through valve body after valve valve cage, therefore fluid mean unit mass-energy dissipative shock wave is larger, makes dispersed phase drop
Degree of crushing aggravates, and is unfavorable for droplet coalescence, so, for reducing fluid units mass-energy dissipative shock wave as far as possible, by low sheraing post
Connect after plug choke valve valve cage and first restrain the spin chamber expanding afterwards, its converging portion contributes to strengthening fluid eddy flow effect, simultaneously
Move to expanding reach after making energy dissipation, increase turbulence energy dissipation volume, reduce mean unit mass-energy dissipative shock wave, and
Expanding reach makes fluid velocity reduce, and pressure recovers rapidly.Obviously, skill is controlled based on eddy flow coalescence and Energy Dissipation Rate Per Unit Mass
Art, by being tangential by valve cage orifice design, and connects behind and first restrains the spin chamber expanding afterwards, can be in plunger type section
While stream valve realizes flow and pressure regulation basic function, reduce the velocity gradient in flow field and turbulence energy dissipative shock wave, fall
Low throttle orifice, for the shearing force of fluid, reduces breakup of drop degree, reduces the difficulty of follow-up oil-water separation.
Brief description
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to required use in embodiment description
Accompanying drawing be briefly described it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structural representation of the defeated use low sheraing plunger-type throttle valve of oil exploitation collection provided in an embodiment of the present invention
Figure；
Fig. 2 is conventional plunger formula choke valve valve cage hole provided in an embodiment of the present invention and low sheraing plunger-type throttle valve valve cage
The comparison diagram in hole
Fig. 3 is valve cage structure in a kind of defeated use low sheraing plunger-type throttle valve of oil exploitation collection provided in an embodiment of the present invention
Schematic diagram；
Fig. 4 is spin chamber's knot in a kind of defeated use low sheraing plunger-type throttle valve of oil exploitation collection provided in an embodiment of the present invention
Structure schematic diagram；
The each labelling of in figure is as follows：1- valve body；2- tapered end end cap；3- streamline is bored；4- bonnet；5- valve rod；6- gland；7-
Piston rod axle sleeve；8- piston rod；9- valve cage；10- spin chamber；11- piston.
Specific embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Inventive embodiment, the every other enforcement that those of ordinary skill in the art are obtained under the premise of not making creative work
Example, broadly falls into protection scope of the present invention.
The embodiment of the present invention provides that a kind of oil exploitation collection is defeated uses low sheraing plunger-type throttle valve, as shown in figure 1, it is main
Including：Valve body 1, tapered end end cap 2, streamline cone 3, bonnet 4, valve rod 5, gland 6, piston rod axle sleeve 7, piston rod 8, valve cage 9,
Spin chamber 10 and piston 11；
From function division, whole valve can be divided into entrance guiding, reducing pressure by regulating flow, eddy flow to coalesce three parts；
Its structural relation is as follows：Valve body 1 adopts fabricated structure, and is connected using studs, the streamline within valve body 1
Bore 3 ends and be drilled with through hole, tapered end end cap 2 adopts screw thread to be connected with streamline cone 3；Valve execution structure is valve rod 5, piston rod 8 and
Piston 11, piston 11 is located inside valve cage 9, and valve cage 9 front end is connected with streamline cone 3, and the bottom of valve rod 5 is machined with diameter and is less than one
The helical gear of fixed number value, piston rod 8 is machined with the helical rack being meshed with helical gear, and valve rod 5 is under valve driver effect
When rotating, piston rod 8 and the piston 11 of piston rod 8 one end is driven to move axially by the transmission mechanism of rack-and-pinion,
Adjust the area of passage of valve cage 9, and then realize Flow-rate adjustment control；Supporting bonnet 4 and gland 6 are additionally provided with valve rod 5,
Supporting piston rod axle sleeve 7 is additionally provided with piston rod 8, valve cage 9 carries tangential hole, the orientation of tangential hole enables flow through valve cage
Both there is the velocity component vertical with axis when 9, there is the velocity component with diameter parallel again；Valve cage 9 end connection diameter is first
The spin chamber 10 expanding after convergence, and the effect of axially position valve cage 9 is played by spin chamber 10, spin chamber 10 end is machined with spiral shell
Stricture of vagina, is fixed threadably with valve body 1；
In work process, oil water mixture is entered by valve inlet, through streamline cone 3 arrival valve cage 9, by valve cage 9
Form eddy flow after tangential throttle orifice, tangential entrance spin chamber 10, indoor in eddy flow, originally it is throttled the dispersion phase of hole shearing-crushing
Drop is coalesced again grows up, and is then discharged out choke valve.
In above-mentioned work process, start to realize this section of reducing pressure by regulating flow when oil water mixture is through streamline cone 3 arrival valve cage 9
The basic function of stream valve, but inevitably oil water mixture is produced during each throttle orifice on flowing through valve cage 9 and cut
Cut emulsification, cause dispersed phase drop to crush.On the one hand, because the throttle orifice of valve cage 9 is in arranged tangential, enable to profit
Mixture flow out tangential hole enter spin chamber 10 after around runner axis in rotation flow forward, cyclonic action is to a certain extent
The coalescence contributing to dispersed phase drop is grown up；On the other hand, the expanding reach of spin chamber 10 can increase turbulence energy dissipation volume,
Reduce turbulence energy dissipative shock wave, promote the coalescence of dispersed phase drop to grow up further, and so that fluid velocity is reduced, pressure obtains one
Determine the recovery of degree, then discharge choke valve.The present invention is before realizing adjusting the basic functions such as oil mixing with water logistics capacity and pressure
Put, by valve cage hole is designed as tangential hole, and after valve cage, connection diameter first restrains the spin chamber expanding afterwards, subtracts as far as possible
Few shear cracking action to oil water mixture for the throttle orifice, increases turbulence energy dissipation volume, reduces oil-water emulsion degree, thus
It is favorably improved follow-up oil-water separation efficiency.
Low sheraing plunger-type throttle valve provided in an embodiment of the present invention not only can be installed and be applied to oil exploitation well head
On production tree, and can install in the flow duct being applied between the oil gathering each equipment of defeated process it might even be possible to install
It is applied to other and be related to oil-water separation or even the occasion of other heterogeneous Liquid liquid Separation, according to the difference of use environment condition,
The metal material such as rustless steel, carbon steel or even process for un-metal material manufacture can be used.
It is illustrated in figure 2 the comparison diagram in conventional plunger formula choke valve valve cage hole and low sheraing plunger-type throttle valve valve cage hole,
A () is conventional plunger formula choke valve valve cage schematic diagram, (b) is low sheraing plunger-type throttle valve valve cage schematic diagram.As figure (a) institute
Show, conventional plunger formula choke valve valve cage hole is radial direction and passes through the valve cage center of circle, when fluid enters valve cage inside by valve cage hole,
Flow direction is disorderly and unsystematic, and shearing force is larger it is impossible to the eddy flow of formation rule, easily causes the broken of dispersed phase drop.As schemed (b)
Shown, low sheraing choke valve valve cage hole is tangential hole, and tangential hole orientation combines axial direction and tangential direction, and concentric with valve cage
Circle is tangent, this specification for structure flow direction of fluid, and fluid enters after valve cage by valve cage tangential hole, is formed coherent in valve cage
Swirling motion, fluid flow direction is consistent, reduces the random eddying motion in flow field, and the gross pressure of eddy flow core along
Flow path is gradually reduced, reduce the shear rate in flow process, it is to avoid the overcrushing of drop, and during eddy flow
Centrifugal force makes the drop of small particle concentrate, and promotes the coalescence of drop.
It is illustrated in figure 3 the structural representation of low sheraing plunger-type throttle valve valve cage, (a) is low sheraing plunger-type throttle valve
Valve cage front view, (b) is low sheraing plunger-type throttle valve valve cage left view.The throttle orifice of low sheraing plunger-type throttle valve valve cage is
Tangentially, and tangent with concentric circular, oil water mixture is after throttle orifice around valve cage axis rotational flow；Tangential hole and valve cage simultaneously
There is angle in axis vertical plane, enable flow through the speed after throttle orifice be divided into the speed of rotary motion around runner axis and
The speed moved along runner axis direction.Based on Cyclone Coalescence Technique, using computational fluid dynamicses (CFD) numerical simulation handss
Section, determines modeling scheme by Response Surface Method, by carrying out numerical value to different valve cages tangential throttle orifice aperture, angle and spacing
Simulation, is become with the size droplet diameter before and after choke valve and turns to basis for estimation, selects change of size less valve cage structure parameter, through mould
Intend calculating and can determine that valve cage throttle orifice is 2 °～10 ° with valve cage axis vertical plane angle span, tangent concentric circular value
Scope is 0.5～0.75 times of valve cage diameter.
The structural representation of low sheraing plunger-type throttle valve spin chamber as shown in Figure 4, spin chamber is located at valve cage rear end, passage
Including first restraining the necking segment expanding afterwards.Fluid after tangential hole around passage axis rotational flow, by spin chamber's contraction section
When, eddy flow strengthens, and promotes centrifugal action, forms new turbulence energy dissipation region in necking region simultaneously, increase energy
Dissipation volume, reduces energy absorbing device.But constriction diameters too small when, necking down substitute throttle orifice play throttling action, energy
Main dissipate in necking segment, therefore should there is a reasonable value in constriction diameters, make energy dissipation and eddy flow centrifugal action reach flat
Weighing apparatus.Therefore theory is expanded based on Energy Dissipation Rate Per Unit Mass control technology and volume, using computational fluid dynamicses (CFD) numerical value
Simulation meanses, determine modeling scheme by Response Surface Method, by spin chamber's difference constriction diameters, front and back end taper and overall length
Degree carries out numerical simulation, is become with the size droplet diameter before and after choke valve and turns to basis for estimation, selects the less spin chamber of change of size
Through simulation calculating, structural parameters, can determine that before spin chamber that taper span is 20 °～50 °, rear taper span is 9 °～
15 °, constriction diameters and spin chamber's total length are defined determination by the concrete nominal diameter of choke valve and pressure.This structure is conducive to strengthening
The eddy flow centrifugal action of fluid, promotes droplet coalescence, and makes shifting after energy dissipation, forms new turbulent flow in expanding reach simultaneously
Energy dissipation, energization dissipation volume, reduces Energy Dissipation Rate Per Unit Mass, thus reducing oil-water emulsion degree.
Valve rod 5 selects helical gear rack gear with piston rod 8, driving angle typically between 15 °～30 °, to ensure to pass
Dynamic stationarity.
Additionally, oil exploitation collection defeated use low sheraing plunger-type throttle valve is based on eddy flow coalescence and Energy Dissipation Rate Per Unit Mass
The design concept of control technology is still applied to other structures type and the choke valve of identical structure type difference channel mode.Example
As, for the low sheraing plunger type angle valve different from embodiment hereof channel mode, valve cage orifice design is tangential,
And connected thereafter and first restrain the spin chamber expanding afterwards, thus realizing low sheraing effect, reduce breakup of drop degree；For orifice plate
For formula choke valve, the orifice design on orifice plate can be tangential, and valve inner hole plate rear end is connected first restrain and expand afterwards
Spin chamber, reduce flow field in velocity gradient and turbulence energy dissipative shock wave, reduce throttle orifice for fluid shearing force, with drop
Low breakup of drop degree；For exterior sliding bush type and needle-type throttle valve, rear portion runner design can be become first restrain and expand afterwards
Spin chamber, reduces breakup of drop degree by reducing Energy Dissipation Rate Per Unit Mass, reduces the difficulty of follow-up oil-water separation.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change or replacement that can readily occur in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (4)
1. a kind of defeated use low sheraing plunger-type throttle valve of oil exploitation collection is it is characterised in that include：Valve body (1), tapered end end cap
(2), streamline cone (3), bonnet (4), valve rod (5), gland (6), piston rod axle sleeve (7), piston rod (8), valve cage (9), rotation
Flow chamber (10) and piston (11)；Wherein：
Valve body (1) adopts fabricated structure, and is connected using studs, and internal streamline cone (3) end of valve body (1) is drilled with logical
Hole, tapered end end cap (2) adopts screw thread to be connected with streamline cone (3)；Valve execution structure is valve rod (5), piston rod (8) and piston
(11), piston (11) is located at valve cage (9) inside, and valve cage (9) front end is connected with streamline cone (3), and the bottom of valve rod (5) is machined with
Diameter is less than the helical gear of certain numerical value, piston rod (8) is machined with the helical rack being meshed with helical gear, valve rod (5) is in valve
When rotating under gate driver effect, piston rod (8) and piston rod (8) one end are driven by the transmission mechanism of rack-and-pinion
Piston (11) axial movement, adjust the area of passage of valve cage (9), and then realize Flow-rate adjustment control；Described valve rod (5) is upper also
It is provided with supporting bonnet (4) and gland (6), piston rod (8) is additionally provided with supporting piston rod axle sleeve (7), on valve cage (9)
With tangential hole, both there is the velocity component vertical with axis when enabling flow through valve cage (9) in the orientation of tangential hole, again exist with
The velocity component of diameter parallel；Valve cage (9) end connection diameter first restrains the spin chamber (10) expanding afterwards, and spin chamber (10) rise
To the effect of axially position valve cage (9), spin chamber (10) end is threaded, solid threadably with valve body (1)
Fixed；
In work process, oil water mixture is entered by valve inlet, reaches valve cage (9) through streamline cone (3), by valve cage (9)
Tangential throttle orifice after form eddy flow, tangentially enter spin chamber (10), indoor in eddy flow, be originally throttled hole shearing-crushing point
Dephasing drop is coalesced again grows up, and is then discharged out choke valve.
2. a kind of defeated use low sheraing plunger-type throttle valve of oil exploitation collection according to claim 1 is it is characterised in that be based on
Cyclone Coalescence Technique, the tangential hole orientation of valve cage (9) combines axial direction and tangential direction, axial direction and valve cage (9) axis
There is angle in vertical plane, angle span is between 2 °～10 °；Tangential direction is tangent with valve cage concentric circular, tangent concentric
Circle span is between 0.5-0.75 times of valve cage diameter.
3. a kind of defeated use low sheraing plunger-type throttle valve of oil exploitation collection according to claim 1 is it is characterised in that valve rod
(5) and piston rod (8) driving angle between 15 °～30 °.
4. a kind of defeated use low sheraing plunger-type throttle valve of oil exploitation collection according to claim 1 is it is characterised in that eddy flow
Room (10) converging portion internal diameter is gradually reduced, and between 20 °～50 °, expanding reach internal diameter is gradually increased taper span, and taper takes
Value scope is between 9 °～15 °；Spin chamber (10) is formed with valve cage (9) using the compound mode of axial seal and radial seal can
By connection.
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| CN201610899014.0A CN106439137A (en) | 2016-10-14 | 2016-10-14 | Low shearing plunger type throttling valve used for oil production gathering and transporting |
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| CN201610899014.0A CN106439137A (en) | 2016-10-14 | 2016-10-14 | Low shearing plunger type throttling valve used for oil production gathering and transporting |
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| CN106439137A true CN106439137A (en) | 2017-02-22 |
Family
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| CN201610899014.0A Pending CN106439137A (en) | 2016-10-14 | 2016-10-14 | Low shearing plunger type throttling valve used for oil production gathering and transporting |
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| CN108426069A (en) * | 2017-02-11 | 2018-08-21 | 何巨堂 | With the erosion material depressurizing system and equipment of the movable throttling element composition of at least two |
| CN108915646A (en) * | 2018-09-06 | 2018-11-30 | 李龙龙 | Gas transmission line multiphase flow drainage gas production tool |
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| CN108426069A (en) * | 2017-02-11 | 2018-08-21 | 何巨堂 | With the erosion material depressurizing system and equipment of the movable throttling element composition of at least two |
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| CN107575585A (en) * | 2017-10-25 | 2018-01-12 | 孙业国 | A kind of bottom valve of latex tank |
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| CN114635983B (en) * | 2020-03-18 | 2023-12-12 | 合肥通用机械研究院有限公司 | Fluid-driven valve core rotary multiphase flow control valve |
| CN111720094A (en) * | 2020-07-02 | 2020-09-29 | 中国石油天然气股份有限公司 | Gas-collecting gas well remote switch valve core, equipment and use method thereof |
| CN113375061A (en) * | 2021-08-16 | 2021-09-10 | 海默新宸水下技术(上海)有限公司 | Medicine injection metering device |
| CN113375061B (en) * | 2021-08-16 | 2021-11-16 | 海默新宸水下技术(上海)有限公司 | Medicine injection metering device |
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