CN206801830U - A kind of oil recovery hollow pump - Google Patents
A kind of oil recovery hollow pump Download PDFInfo
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- CN206801830U CN206801830U CN201720158109.7U CN201720158109U CN206801830U CN 206801830 U CN206801830 U CN 206801830U CN 201720158109 U CN201720158109 U CN 201720158109U CN 206801830 U CN206801830 U CN 206801830U
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Abstract
A kind of oil recovery hollow pump is the utility model is related to, belongs to technical field of petroleum extraction.Oil recovery hollow pump of the present utility model, including pump barrel, plunger is provided with pump barrel, it is provided with plunger and mixes dilute passage, oil pumping passage, travelling valve is provided with oil pumping passage, standing valve is provided with below plunger, oil storage space is left between travelling valve and standing valve, also include being located at below plunger mixing dilute hollow pipe, mix in dilute hollow pipe and be provided with fluid course, dilute hollow pipe lower end is mixed to stretch into oil storage space or pass oil storage space downwards and be provided with the incorporation mouth for mixing dilute medium for discharging, plunger and mix and be connected with lower bridge-type joint between dilute hollow pipe, not connected lower pod apertures and lower incorporation hole are provided with lower bridge-type joint, lower pod apertures it is upper, lower both ends communicate with oil pumping passage and oil storage space respectively, it is lower to mix the upper of hole, lower both ends are respectively with mixing dilute passage, fluid course communicates.Oil recovery hollow pump of the present utility model, which can improve, to be mixed dilute efficiency and mixes dilute effect.
Description
Technical field
A kind of oil recovery hollow pump is the utility model is related to, belongs to technical field of petroleum extraction.
Background technology
In the prior art, because the viscosity of crude oil is too big when viscous crude or high-viscosity oil are exploited, it is easy to oil pick-up tube is blocked, in order to
Solves this problem, it will usually added while crude oil extraction to underground and mix the mode of dilute medium to reduce the viscosity of crude oil.
Because the addition direction for mixing dilute medium is in opposite direction with pumping, in order to not influence the normal work of pumping pipelines,
It has developed in the prior art and the independent oil well pump for mixing dilute hollow pipe be set in pumping pipelines, as application publication number is
CN103498785A Chinese invention patent application (data of publication of application is on January 8th, 2014) discloses a kind of fireflood oil well pump,
The oil well pump includes pump barrel, and the core bar that can be moved up and down is provided with pump barrel, and the lower end of core bar is fixedly connected with plunger, plunger
Lower end is provided with travelling valve, and standing valve is provided with the pump barrel below travelling valve, in the oil well pump, travelling valve and standing valve it
Between formed with oil storage space, core bar drives plunger to move up and down and coordinates travelling valve and the action of standing valve can realize oil pumping.
The oil well pump mixes dilute medium to add, and core bar is arranged into the hollow structure with central passage, and particularly in plunger
In be provided with the confession connected with central passage and mix and mix dilute hollow pipe under dilute medium flow field, accordingly, also mixing dilute sky in plunger
Oil pumping passage is provided with around heart pipeline, flow channels are left between core bar and pump barrel.During oil pumping, core bar drives plunger upward
Mobile, under fluid pressure effect, travelling valve is closed, and the pressure in oil storage space subtracts as plunger rises
It is small, open standing valve, downhole crude enters in the oil storage space between standing valve and travelling valve；Then core bar drive plunger to
Lower motion, closed under the pressure effect of standing valve crude oil in oil storage space, the extruding of crude oil of the travelling valve in oil storage space
Effect is lower to open, and the crude oil in oil storage space enters oil pumping passage and extracted out from flow channels.
Due to mix dilute hollow pipe and oil pumping passage be in plunger it is parallel arrangement of, in order to which dilute sky will be mixed in center
Mixing in heart pipeline be around dilute medium is oriented to, with reserve for oil pumping passage from centrally through space, the oil well pump also especially sets
Tap has been put, not connected eccentric orfice and endoporus, endoporus and oil pumping passage and oil storage space are provided with tap
It is connected.Side opening is further opened with tap, side opening connects with eccentric orfice, and core bar connects with eccentric orfice, is added from core bar
Mix dilute medium and can be flowed into from eccentric orfice in side opening, and be located on pump barrel outer wall from side opening flow direction and mix dilute side opening efflux pump
Cylinder is outer.And be extracted in the endoporus entrance oil pumping passage that crude oil passes through oil storage space, tap, that is, mix dilute medium and crude oil point
Do not flowed from two passages, it is non-interference.
But above-mentioned oil well pump mixes dilute medium through mixing dilute side opening stream on the side opening on tap and pump barrel outer wall
Go out, the top of travelling valve is arranged on due to mixing dilute side opening, it is dilute from mixing with the standing valve close to crude oil withdrawn position then apart from farther
What is flowed out in side opening mixes dilute medium and can only fall on the surface of crude oil layer, hardly enters and is sufficiently mixed inside crude oil with crude oil, is caused
It mixes dilute less efficient, and it is also poor to mix dilute effect.
Utility model content
The purpose of this utility model, which is to provide, a kind of mix dilute efficiency high and mixes the good oil recovery hollow pump of dilute effect.
To achieve the above object, the technical scheme of oil recovery hollow pump of the present utility model is：
A kind of oil recovery hollow pump, including the pump barrel for being connected with oil pipe, plunger is provided with pump barrel, is provided with plunger
Dilute passage, oil pumping passage are mixed, travelling valve is provided with passage of pumping, standing valve, travelling valve and standing valve is provided with below plunger
Between leave oil storage space, in addition to be located at below plunger and mix dilute hollow pipe, mix in dilute hollow pipe and be provided with fluid course, mix
Dilute hollow pipe lower end is stretched into oil storage space or passes oil storage space downwards and be provided with for mixing dilute medium into oil
Incorporation mouth, plunger and mix and be connected with lower bridge-type joint between dilute hollow pipe, be provided with lower bridge-type joint it is not connected under
Pod apertures and lower incorporation hole, the upper/lower terminal of lower pod apertures communicate with oil pumping passage and oil storage space respectively, lower incorporation hole
Upper/lower terminal respectively with mixing dilute passage, fluid course communicates.
Plunger inner tube is provided with the plunger, plunger internal tube has the oil pumping passage, plunger inner tube and plunger
Between plunger annular space constitute it is described mix dilute passage, the lower bridge-type joint includes lower contact housing, lower contact housing upper end
Face is fixedly connected with plunger and plunger inner tube lower end, and lower contact housing lower surface is fixedly connected with mixing dilute hollow pipe upper end.
The travelling valve includes the valve bonnet being fixedly installed in plunger inner tube and the valve seat for being fixedly installed on valve bonnet lower end,
Valve seat lower end is fixedly connected with lower bridge-type upper end of joint face, and the inlet communicated with the lower pod apertures, valve are provided with valve seat
Be provided with cover with valve seat coordinate valve ball, the valve bonnet inwall be provided with valve ball guiding movement coordinate guide frame and
The flow channels for the liquid for entering valve seat to be exported to valve bonnet are mutually passed to valve seat inlet.
The valve bonnet is the cylindrical structure in insertion plunger inner tube, and the inwall of the cylindrical structure, which has to be oriented to valve ball, to be moved
The dynamic spigot surface coordinated, the spigot surface constitute the guide frame, and the flow channels are to be arranged on cylindrical structure inwall
And the arc groove extended along cylinder axis direction.
The standing valve includes the ring-shaped valve seats for being fixedly installed on pump barrel inwall and the ring to be cooperated with ring-shaped valve seats
Shape valve ball, the pump barrel inwall are provided with the annular valve ball position limiting structure for the mobile carry out block upward to annular valve ball,
The annular plate valve ball cover, which is located at, to be mixed on dilute hollow pipe outer peripheral face and with mixing dilute hollow pipe outer peripheral face frictional fit, and annular valve ball can
Continued to move up with mixing dilute hollow pipe and being moved upward to be limited structure block and make to mix dilute hollow pipe, annular valve ball can also
Continue to move down with mixing dilute hollow pipe and being moved downward to be made to mix dilute hollow pipe by ring-shaped valve seats block.
Also include erection device, the erection device includes being set in mixing on dilute hollow pipe outer peripheral face and with annular valve ball consolidating
Surely the valve pocket connected, centering ring is fixedly installed on valve pocket outer peripheral face, outer peripheral face and the pump barrel inwall of centering ring are slidably matched, helped
The upper end of positive ring has the stopping surface coordinated with the annular valve ball position limiting structure block.
Its upper end is connected with bridge-type joint, and upper bridge-type upper end of joint is connected with hollow stem, hollow stem and pump barrel
Between leave flow channels, be provided with not connected upper pod apertures and upper incorporation hole in upper bridge-type joint, upper pod apertures it is upper,
Lower both ends communicate with flow channels and oil pumping passage respectively, and the upper/lower terminal in upper incorporation hole is respectively with hollow stem and mixing dilute passage
Communicate.
It is described mix dilute hollow pipe lower end and be connected with turn mix dilute hollow stem and hollow stem connection coupling, it is described to mix dilute hollow stem
External diameter be less than the hollow stem connection coupling external diameter.
The beneficial effects of the utility model are：
Oil recovery hollow pump of the present utility model is provided with for mixing dilute medium and two mutually isolated passages of crude oil flow,
Mixing dilute medium can be mixed in dilute hollow pipe by the lower incorporation hole entrance on lower bridge-type joint, and directly be entered by mixing dilute hollow pipe
Enter in crude oil, realize with crude oil and sufficiently mix, improve and mix dilute efficiency and mix dilute effect.And dilute hollow pipe is mixed upper and lower
In moving process, to the crude oil in shaft bottom and dilute medium can be mixed it is stirred, further increase and mix dilute efficiency and mix dilute effect,
Also improve pumping efficiency.
Further, travelling valve of the present utility model is avoided that unlatching when hollow pump is applied to inclined shaft, closes hysteresis and ask
Topic, can also reduce crude oil and enter pump resistance in addition.Under the swabbing action of oil well pump, additionally it is possible to valve ball, valve seat are cleaned, carried
The reliability and the scope of application of high pump valve.
Further, the utility model uses Dual-layer bridge-type joint design, solves and dilute travelling valve is mixed under conventional pumps
The short problem of service life, also have the advantages that sealing reliability is high, service life is long.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of oil recovery hollow pump of the present utility model；
Fig. 2 is diagrammatic cross-section at C-C in Fig. 1；
Fig. 3 is diagrammatic cross-section at D-D in Fig. 1；
Fig. 4 is diagrammatic cross-section at E-E in Fig. 1；
Fig. 5 is the structural representation of the upper bridge-type joint in Fig. 1；
Fig. 6 is the structural representation of the lower bridge-type joint in Fig. 1.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
The specific embodiment of oil recovery hollow pump of the present utility model, as shown in Figures 1 to 6, the oil recovery of the present embodiment is hollow
Pump includes pump barrel, and pump barrel includes the upper pump barrel 9 being fixed together and connects outer tube 14, and connection outer tube 14 is coaxial fixed company
The internal diameter of the lower end of pump barrel 9 pipeline smaller than upper pump barrel internal diameter is connected on, the upper upper end of pump barrel 9 is connected with oil pumping pipe joint 2, oil pick-up tube
The upper end of joint 2 is connected with oil pick-up tube.
Plunger 5 is provided with upper pump barrel 9, the outer peripheral face of plunger 5 is slidably matched with the upper inwall of pump barrel 9, coaxially set in plunger 5
Plunger inner tube 4 is equipped with, there is oil pumping passage in plunger inner tube, plunger is formd between the outer wall and the inwall of plunger 5 of plunger inner tube 4
Annular space, plunger annular space, which constitutes, mixes dilute passage, and its upper end is connected with bridge-type joint 3, the upper upper end of bridge-type joint 3 be connected with
The hollow stem 1 that upper pump barrel 9 is coaxially disposed, hollow stem annular space, hollow stem are formd between the outer wall of hollow stem 1 and the inwall of upper pump barrel 9
Annular space constitutes flow channels.Hollow stem is equal with the external diameter of upper bridge-type joint, and hollow stem is outer with upper bridge-type joint
Wall is arranged with hollow stem box cupling 15, so that hollow stem is fixedly connected with upper bridge-type joint sealing.
The upper end of plunger is connected with pressed joint 16, and pressed joint is set on bridge-type joint outer peripheral face, makes bridge-type
Joint is fixedly connected with plunger, and pressed joint in the gap of plunger junction with being provided with sealing ring 17.
Plunger lower end is fixedly connected with lower bridge-type joint 7, and the lower lower end of bridge-type joint 7 is fixedly connected with coaxial with upper pump barrel 9
Mix dilute hollow pipe 8, mix dilute hollow pipe 8 external diameter be less than connection outer tube 14 internal diameter, mix dilute hollow pipe 8 and be in upper pump barrel
Annular space between part and upper pump barrel forms oil storage annular space.
Upper bridge-type joint 3 is internally provided with pod apertures and upper incorporation hole, and upper pod apertures include a upper pod apertures main aperture
301 and be connected with upper pod apertures main aperture 301 two upper pod apertures branch holes 302, upper pod apertures main aperture 301 and upper pod apertures branch hole
302 are set in inverted herringbone, and the opening of upper pod apertures main aperture 301 is arranged on the center of the lower surface of bridge-type joint 3,
And be connected with the sealing of the upper port of plunger inner tube 4, two openings in upper pod apertures branch hole 302 are separately positioned on bridge-type joint 3
The position at the close edge of end face, and communicated with hollow stem annular space, the oil in plunger inner tube 4 is passed through upper bridge-type joint
3 upper pod apertures enter hollow stem annular space.Upper incorporation hole includes a upper incorporation hole main aperture 303 and mixes hole main aperture 303 with upper
The upper incorporation Kong Zhikong 304 of connected two, upper incorporation hole main aperture 303 and upper incorporation Kong Zhikong 304 are in herringbone setting, upper incorporation
The opening of hole main aperture 303 is arranged on the center of the upper surface of bridge-type joint 3, and is tightly connected with hollow stem lower port, on
Incorporation Kong Zhikong 304 two openings are separately positioned on the position at the close edge of the lower surface of bridge-type joint 3, and and plunger ring
Kongxiang leads to, and the viscosity reduction liquid for enabling to add in hollow stem enters plunger annular space by upper incorporation hole.Upper pod apertures and upper incorporation
Hole is mutually isolated, not connected.
Lower bridge-type joint 7 is internally provided with lower pod apertures and lower incorporation hole, and lower pod apertures include a lower pod apertures main aperture
701 and two lower pod apertures branch holes 702 being connected with lower pod apertures main aperture, lower pod apertures main aperture 701 and lower pod apertures branch hole 702
Set in herringbone, the opening of lower pod apertures main aperture 701 is arranged on the center of the lower upper surface of bridge-type joint 7, and and plunger
The sealing of the lower port of inner tube 4 is connected, and two openings in lower pod apertures branch hole 702 are separately positioned on leaning on for the lower lower surface of bridge-type joint 7
The position of proximal edge, and communicated with oil storage annular space, enable lower pod apertures of the oil in oil storage annular space by lower bridge-type joint
Into plunger inner tube 4.Under two that lower incorporation hole is connected including incorporation hole main aperture 703 under one and with lower incorporation hole main aperture 701
Kong Zhikong 704 is mixed, lower incorporation hole main aperture 701 and lower incorporation Kong Zhikong 704 are set in inverted herringbone, lower incorporation hole main aperture
701 opening is arranged on the center of lower bridge-type joint lower surface, and is tightly connected with mixing dilute upper port of hollow pipe 8, under mix
Enter the position at two of the Kong Zhikong 704 close edges for being separately positioned on the lower upper surface of bridge-type joint 7 that are open, and with plunger annular space
Communicate, the aerial viscosity reduction liquid of plunger ring is entered by lower incorporation hole and mix dilute hollow pipe 8.Lower pod apertures and lower incorporation hole
It is mutually isolated, it is not connected.
In the lower pod apertures upper port and plunger of lower bridge-type joint 7 travelling valve, travelling valve bag are provided between infratubal port
Valve bonnet, valve ball 6, valve seat 18 are included, valve seat is fixedly connected on valve bonnet lower end, is provided with what is be connected with lower pod apertures upper port on valve seat
Valve seat inlet, the diameter of valve ball are more than the diameter of valve seat inlet, can block valve seat inlet.Valve bonnet includes and plunger
The guide cylinder that inner tube is coaxially disposed, guide cylinder are cylinder, are oriented to drum outer wall and plunger inner tube wall fixed seal connection, guide cylinder
Internal diameter is identical with valve ball diameter, and guide cylinder inwall forms spigot surface, enables valve ball along upper pump barrel axis direction guiding movement.
It is provided with the guiding gutter that length extends along guide cylinder axis direction on guide cylinder inwall, the depth direction of guiding gutter is along guide cylinder
Radial direction stretches out, and guiding gutter notch is towards inside guide cylinder, and guiding gutter is provided with flow-guiding mouth on one end upward, under
The oil that pod apertures enter in the guide cylinder of valve seat can enter guiding gutter, and enter plunger inner tube from the flow-guiding mouth of guiding gutter.
Plunger inner tube wall in plunger inner tube above guide cylinder is fixedly installed circular baffle plate 19, is provided with circular baffle plate 19 more
The individual through hole passed through for liquid, the internal diameter of through hole are respectively less than the diameter of valve ball, so that baffle plate can be in the case where valve ball be moved to baffle plate
Fang Shi, by baffle with avoid valve ball continue moved up along plunger inner tube.
In the present embodiment, guiding gutter is two arc grooves circumferentially uniformly laid along guide cylinder inwall, arc groove
The diameter parallel of axis and guide cylinder, arc groove lower end are more than the radius of valve ball apart from the distance of valve seat inlet, and arc is recessed
The inner face of the lower end of groove the upper end open of arc groove, enables the oil into arc groove perpendicular to the axis of guide cylinder
It is enough smoothly to enter plunger inner tube.The cambered surface diameter of arc groove be less than guide cylinder diameter, so that guide cylinder upper end it is interior
Wall side face has been divided into the arcwall face that both ends are uniformly distributed circumferentially by arc groove, and the arcwall face is in guide cylinder inner peripheral surface
Part below arc groove forms guiding movement with valve ball together and coordinated.
The upper lower end of pump barrel 9 is provided with toroidal membrane with being connected the junction of outer tube 14, more than toroidal membrane is upper pump barrel 9, ring
Below shape dividing plate for connection outer tube 14, toroidal membrane plate face perpendicular to upper pump barrel 9 and connection outer tube 14 axis, toroidal membrane
Outer rim is welded with the upper inwall of pump barrel 9, and the upper limb of connection outer tube 14 is welded on toroidal membrane lower surface, and the endoporus of toroidal membrane is straight
Footpath is less than the internal diameter of connection outer tube 14, and the lower end for mixing dilute hollow pipe 8 of lower bridge-type joint lower end connection is from the center of toroidal membrane
Hole is stretched into connection outer tube 14.Mix and be arranged with annular valve ball 12 on one end outer peripheral face that dilute hollow pipe 8 is stretched into connection outer tube 14,
Ring-shaped valve seats 13 is provided with the connection inwall of outer tube 14, and ring-shaped valve seats and the cooperation of annular valve ball can mix dilute hollow pipe to moving down
It is dynamic to a certain extent when will mix dilute hollow pipe and connect the gap plugging between outer tube 14.Mix and also covered on dilute outer peripheral face of hollow pipe 8
Provided with sealing drum 10, the lower end of sealing drum 10 is fixedly connected with the upper end of annular valve ball 12, and the upper end of sealing drum 10, which is fixed, to be arranged
There is centering ring 11, the outer rim of centering ring 11 is slidably matched with being connected the inwall of outer tube 14, and centering ring upper surface forms and toroidal membrane
The stopping surface that lower surface block coordinates, it is provided with along the through hole for mixing the dilute axial direction of hollow pipe 8 extension, for connection on centering ring 11
Crude oil in outer tube 14 flows through.Sealing drum 10 can the inwall of sealing drum 10 and connection the outer wall of outer tube 14 between frictional force band
Dynamic lower edge connection outer tube 14 axis direction movement, when moving up, is moved in centering ring 11 and is contacted with toroidal membrane lower surface
Afterwards, toroidal membrane stops to centering ring 11, and centering ring 11 and sealing drum 10 are no longer continued to move to mixing dilute hollow pipe；Move down
When, when annular valve ball 12 is engaged with ring-shaped valve seats 13, ring-shaped valve seats 13 is formed to annular valve ball 12 to be stopped, annular valve ball
12nd, sealing drum 10 and centering ring 11 are no longer continued to move to downwards with mixing dilute hollow pipe.
Connection outer tube lower end is connected with lower contact 20, mixes dilute hollow pipe and is passed from lower contact.Dilute lower end of hollow pipe 8 is mixed to set
Incorporation mouth is equipped with, enables to mix the viscosity reduction liquid in dilute hollow pipe and discharges and mixed with the oil outside pump, reduce oil
Viscosity.
Mix dilute lower end edge of hollow pipe 8 mix dilute hollow pipe bearing of trend be connected with turn multiple lengths not wait it is special mix it is dilute
Hollow stem, adjacent mix are connected by hollow stem connection coupling between dilute hollow stem.Hollow stem connection coupling external diameter is smaller
In the external diameter for mixing dilute hollow pipe 8, mix external diameter of dilute hollow stem external diameter less than hollow stem connection coupling and be much smaller than and mix dilute hollow pipe 8
External diameter, guarantee mixes dilute hollow stem and hollow stem connection coupling and can pass through tubular valve pocket, and liquid mixes dilute sky by multistage
Core bar and hollow stem connection coupling form turbulent flow, incorporation medium is sufficiently mixed with shaft bottom crude oil, ensure mixed effect.
Hollow stem is connected using taper pipe thread, good seal performance the advantages of taper pipe thread, and docking is convenient during connection, keeps away
The shortcomings of regular screw threads are not easy to dock and need sealing ring non-refractory is exempted from.
When in use, viscosity reduction medium such as thinner etc. is added hollow the oil recovery hollow pump of the present embodiment by ground installation
Bar, then enter plunger annular space by the upper incorporation hole of upper bridge-type joint by hollow stem, pass through lower bridge-type in the air from plunger ring
The lower incorporation hole of joint, which enters, mixes in dilute hollow pipe, discharges from the incorporation mouth for mixing dilute hollow pipe lower end, enters with the oil under pump
Row mixing, make to mix dilute hollow pipe the crude oil under pump and thinner mixing are mixed it is dilute.Then upper pump barrel is moved down, mix it is dilute after
Crude oil enters in connection outer tube, and hollow stem moves up, and drives plunger and mixes dilute hollow pipe and move up, mix dilute hollow pipe with it is upper
Oil storage annular volume increase between pump barrel, pressure reduce, and now, sealing drum moves up in the case where mixing dilute hollow pipe and driving, ring
Shape ball valve is opened, and the crude oil connected in outer tube is inhaled into oil storage annular space, completes upstroke imbibition process, in the process, under
Travelling valve on bridge-type joint is closed.Afterwards, hollow stem moves down, and drives plunger and mixes dilute hollow pipe to moving down
It is dynamic, mix the sealing drum being arranged outside dilute hollow pipe and annular ball valve also moves down, annular ball valve is moved at ring-shaped valve seats, will
Annular ball valve is closed, and the space due to oil storage annular space is compressed, and crude oil washes the valve ball of travelling valve open, into travelling valve base
It is interior, and enter plunger inner tube from arc groove, continue to move up and hollow stem is entered by the guide hole in upper bridge-type joint
In annular space between upper pump barrel and it is discharged, completes down stroke oil pumping operation.During upstroke, because travelling valve closes
Close, therefore, the fluid column load of pump is plunger cross-sectional area and the product of hollow stem bottom liquid pressure, that is to say, that on the pump
Stroke fluid column load is equal to the fluid column load of the normal conventional tubing pump with pump footpath.During down stroke, because travelling valve is beaten
To open, annular ball valve is closed, and the upper surface for mixing dilute hollow pipe has acted on downward hydraulic action, and it is descending that dilute hollow pipe is mixed in help,
Overcome friction in down stroke.
When oil well output is low, it is necessary to during steam injection, upper exhaust core bar, now, plunger, upper bridge-type joint, mix dilute hollow pipe with
Hollow-rod string moves upwards, and wherein plunger is mixed dilute hollow pipe and be trapped in completely in pump barrel, steam completely into pump barrel top
Vapour from oil pipe, oil pipe and plunger annular space, mix dilute hollow pipe and pump barrel annular space, sealing tube inner chamber, fixed valve base inner chamber
Into after afterbody oil pipe, stratum is reinjected.
When needing to turn to take out, hollow stem is transferred, now, plunger, lower bridge-type joint, the hollow roofbolt of dilute hollow pipe is mixed and transports downwards
Move and touch pump position, now plunger reaches pump barrel bottom, mixes dilute hollow pipe and is trapped in completely in sealing drum, then above carries certain
Dead space, you can oil pumping.
The oil recovery hollow pump of the present embodiment can also make the timely folding of travelling valve, avoid the occurrence of valve in inclined shaft is applied to
The situation that ball under gravity in time can not close travelling valve.
In the other embodiment of oil recovery hollow pump of the present utility model, travelling valve includes valve ball and valve seat, is set on valve seat
The spigot surface of inverted conical is equipped with, valve ball can drop down onto seat bottom portion under gravity along spigot surface and block inlet.
Such a scheme is suitable for the little inclined shaft operation of straight well or gradient.And for inclined shaft, can also be in the valve of the travelling valve
Spring is set between ball and valve seat, even if resetting valve ball by the pulling force of spring realizes closure.
In other embodiments, arc groove lower end is less than the radius of valve ball apart from the distance of valve seat inlet.
In other embodiments, the quantity of arc groove is more than two.
In other embodiments, arc groove can be substituted by square groove.
In other embodiments, arc groove can be replaced by the pod apertures being arranged in guide cylinder barrel, specifically, leading
The one end open of discharge orifice is opened on guide cylinder inwall, and another end opening is opened on guide cylinder upper surface.
In other embodiments, mix dilute passage and pump what passage was be arranged in parallel by two that are arranged on plunger body respectively
Pipeline is formed.
In other embodiments, bridge-type joint is not provided with, hollow stem is directly connected with plunger inner tube, and crude oil is out of plunger
Enter in pipe in hollow stem inner chamber and be discharged, thinner adds in the annular space between hollow stem and upper pump barrel.
In other embodiments, annular ball valve can also use check valve of the prior art, such as mix outside dilute hollow pipe
Ring baffle is set between wall and connection outer tube wall, ring baffle is fixedly connected with being connected outer tube wall, ring baffle center
Hole sets travelling ball valve with mixing the interactive cooperation of dilute hollow pipe on baffle plate.
In other embodiments, centering ring, the toroidal membrane centre bore internal diameter between upper pump barrel and connection outer tube are not provided with
Less than the external diameter of sealing drum, when sealing drum is moved at the toroidal membrane, it can be stopped by toroidal membrane, be set on toroidal membrane
Oil outlet.
In other embodiments, upper bridge-type joint and oil guiding hole in lower bridge-type joint and the Zhi Kongjun of delivery hole can be with
It is arranged to one or more than two.
Claims (8)
1. a kind of oil recovery hollow pump, including the pump barrel for being connected with oil pipe, plunger (5) is provided with pump barrel, is set in plunger
Have and mix dilute passage, oil pumping passage, be provided with travelling valve in passage of pumping, standing valve, travelling valve and fixation are provided with below plunger
Oil storage space is left between valve, it is characterised in that also include being located at below plunger mixing dilute hollow pipe (8), mix dilute hollow pipe (8)
Fluid course is inside provided with, dilute hollow pipe (8) lower end is mixed and stretches into oil storage space or pass oil storage space downwards and be provided with
For mixing the incorporation mouth of dilute medium into oil, plunger and mix and be connected with lower bridge-type joint (7), lower bridge-type between dilute hollow pipe
Be provided with not connected lower pod apertures and lower incorporation hole in joint (7), the upper/lower terminals of lower pod apertures respectively with passage of pumping
And oil storage space communicates, it is lower incorporation hole upper/lower terminal respectively with mixing dilute passage, fluid course communicates.
2. oil recovery hollow pump according to claim 1, it is characterised in that be provided with plunger inner tube in the plunger (5)
(4), there is the oil pumping passage inside plunger inner tube (4), the plunger annular space between plunger inner tube (4) and plunger (5) constitutes
Described to mix dilute passage, the lower bridge-type joint (7) includes lower contact housing, lower contact housing upper surface and plunger and plunger inner tube
(4) lower end is fixedly connected, and lower contact housing lower surface is fixedly connected with mixing dilute hollow pipe (8) upper end.
3. oil recovery hollow pump according to claim 2, it is characterised in that the travelling valve includes being fixedly installed in plunger
Manage the valve bonnet in (4) and be fixedly installed on the valve seat of valve bonnet lower end, valve seat lower end is fixed with lower bridge-type joint (7) upper surface to be connected
Connect, the inlet communicated with the lower pod apertures is provided with valve seat, the valve ball coordinated with valve seat, the valve are provided with valve bonnet
Cover inwall is provided with the guide frame coordinated with valve ball guiding movement and mutually passed to valve seat inlet for that will enter valve seat
Liquid export valve bonnet flow channels.
4. oil recovery hollow pump according to claim 3, it is characterised in that the valve bonnet is in insertion plunger inner tube (4)
Cylindrical structure, the inwall of the cylindrical structure have the spigot surface coordinated with valve ball guiding movement, and the spigot surface constitutes described
Guide frame, the flow channels are the arc groove for being arranged on cylindrical structure inwall and extending along cylinder axis direction.
5. according to the oil recovery hollow pump described in claim 1-4 any one, it is characterised in that the standing valve includes fixation and set
The ring-shaped valve seats (13) in pump barrel inwall and the annular valve ball (12) that is cooperated with ring-shaped valve seats (13) are put, in the pump barrel
Wall is provided with the annular valve ball position limiting structure for the mobile carry out block upward to annular valve ball (12), the annular valve ball
(12) it is set in and mixes on dilute hollow pipe outer peripheral face and with mixing dilute hollow pipe outer peripheral face frictional fit, annular valve ball can be dilute with mixing
Hollow pipe is moved upward to be limited structure block and make to mix dilute hollow pipe and continued to move up, and annular valve ball can also be dilute with mixing
Hollow pipe, which is moved downward to be made to mix dilute hollow pipe by ring-shaped valve seats block, to be continued to move down.
6. oil recovery hollow pump according to claim 5, it is characterised in that also including erection device, the erection device bag
Include the valve pocket (10) for being set in and mixing on dilute hollow pipe (8) outer peripheral face and being fixedly connected with annular valve ball (12), valve pocket (10) periphery
Centering ring (11) is fixedly installed on face, outer peripheral face and the pump barrel inwall of centering ring (11) are slidably matched, centering ring (11) it is upper
End is with the stopping surface coordinated with the annular valve ball position limiting structure block.
7. oil recovery hollow pump according to claim 5, it is characterised in that plunger (5) upper end is connected with bridge-type and connect
Head (3), upper bridge-type joint (3) upper end are connected with hollow stem (1), and hollow stem (1) leaves flow channels, upper bridge-type between pump barrel
Be provided with not connected upper pod apertures and upper incorporation hole in joint (3), the upper/lower terminals of upper pod apertures respectively with flow channels
And oil pumping passage communicates, the upper/lower terminal in upper incorporation hole is respectively with hollow stem (1) and mixing dilute passage and communicating.
8. oil recovery hollow pump according to claim 5, it is characterised in that described dilute hollow pipe (8) lower end of mixing is sequentially connected
Have and mix dilute hollow stem and hollow stem connection coupling, the external diameter for mixing dilute hollow stem is less than the outer of the hollow stem connection coupling
Footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720158109.7U CN206801830U (en) | 2017-02-21 | 2017-02-21 | A kind of oil recovery hollow pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812686A (en) * | 2017-02-21 | 2017-06-09 | 中国石油化工股份有限公司 | Method is mixed under a kind of oil recovery hollow pump and hollow pump pump |
| CN111336082A (en) * | 2020-03-05 | 2020-06-26 | 徐海英 | Long stroke oil pump |
| CN113756752A (en) * | 2021-07-23 | 2021-12-07 | 长江大学 | Two-stroke swabbing method and oil extraction device |
-
2017
- 2017-02-21 CN CN201720158109.7U patent/CN206801830U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812686A (en) * | 2017-02-21 | 2017-06-09 | 中国石油化工股份有限公司 | Method is mixed under a kind of oil recovery hollow pump and hollow pump pump |
| CN106812686B (en) * | 2017-02-21 | 2018-12-14 | 中国石油化工股份有限公司 | A kind of oil recovery hollow pump and hollow pump pump lower incorporation method |
| CN111336082A (en) * | 2020-03-05 | 2020-06-26 | 徐海英 | Long stroke oil pump |
| CN113756752A (en) * | 2021-07-23 | 2021-12-07 | 长江大学 | Two-stroke swabbing method and oil extraction device |
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