CN107461320B - Positive displacement pump and extracting device of oil - Google Patents
Positive displacement pump and extracting device of oil Download PDFInfo
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- CN107461320B CN107461320B CN201710755744.8A CN201710755744A CN107461320B CN 107461320 B CN107461320 B CN 107461320B CN 201710755744 A CN201710755744 A CN 201710755744A CN 107461320 B CN107461320 B CN 107461320B
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- plunger
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- oil
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- driving
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 230000015572 biosynthetic process Effects 0.000 claims description 33
- 210000002421 cell wall Anatomy 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000035699 permeability Effects 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 77
- 238000005086 pumping Methods 0.000 description 26
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000005265 energy consumption Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 244000062793 Sorghum vulgare Species 0.000 description 5
- 239000000306 component Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 235000019713 millet Nutrition 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Rotary Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to the extracting device of oil of a kind of positive displacement pump and the use positive displacement pump, which includes shell, and shell has drain side and cylindrical pump chamber, offers at least one inlet in housing sidewall, apocenosis passage is formed in housing sidewall；Coaxially being embedded in shell can be around the rotor block that own axes rotate, at least one through hole for being directed to the liquid of inlet side in apocenosis passage is formed in rotor block, a plunger is slidably equipped in each through hole, each plunger is set gradually along the axial direction of rotor block and axis is vertical with the axis of rotor block；It is coaxially provided in rotor block for driving each plunger in corresponding through hole toward the driving crank of polyslip.Above-mentioned plunger pump, since diameter of plunger is small, liquid displacement is low, if reducing the rotary speed of rotor block, discharge capacity can be also further decreased, therefore disclosure satisfy that conventional oil field and the oil recovery discharge capacity of low permeability oil and gas field and the requirement of lift, can preferably adapt to the demand of the small onshore oil field of Liquid output.
Description
Technical field
The invention belongs to technical field of oil extraction equipment, and in particular to the oil recovery of a kind of positive displacement pump and the positive displacement pump that recovers the oil
Device.
Background technology
Mechanical oil recovery is the mode oil extraction ground with mechanical energy.Currently, main mechanical oil production model has oil pumping
Motor-pumped well recovers the oil, electric submersible centrifugal pump well recovers the oil and surface drive screw pump wells are recovered the oil.
(1) fine strain of millet formula pumping production system is swum
Trip fine strain of millet formula pumping production system is made of ground pumping unit system and 2 part of underground pumping system, is oil field
Main oil production equipment, usage quantity is big, and power consumption is big, and system effectiveness is low, belongs to typical " low load with strong power ".
China's beam pumping unit producing well is more than 200,000 mouthfuls, accounts for 90% or more of production well sum, is the master in oil field
Oil production equipment is wanted, and system effectiveness average operating efficiency is only 26%, belongs to typical " low load with strong power ", energy consumption has accounted for oil field
The one third of energy consumption, the annual power consumption electricity in the whole nation exceed 10,000,000,000 kilowatt hours.Since electric motor starting torque is small, and beam pumping unit
Larger detent torque band dynamic balance weight is needed, big 2 of power etc. needed for normal operation after matched power of motor starts than pumping unit
Grade or more, and load-rate of motor is only 40% or so when normal operation；In addition, due to the underground oil pumping to work together with pumping unit
Alternately variation causes ground system operating unbalance to pump load, exacerbates the reactive power consumption of dynamical system, leads to oil pumping system
Fallback causes huge energy waste.The power that motor provides when balanced ratio is 100% is only used for lifting 1/2
Fluid column weight and overcome frictional force etc..Pumping unit ground system is made of motor, pulley, retarder and four-bar mechanism.It looks into
Related mechanical engineering manual, since pumping unit load is uneven, motor maximal efficiency reaches 80%, belt pulley+retarder effect
Rate is 82%, and four-bar mechanism efficiency is 95%, and ground system maximal efficiency is 62%；Packing box efficiency is 90%, sucker rod
Efficiency is 90%, and the oil pumping efficiency of pump is 80%, and oil pipe column efficiency is 95%, and underground pumping system maximal efficiency is 62%；Entirely
Beampumping unit system maximal efficiency only has 38.4%.Domestic each oilfield pumping well system effectiveness is mainly distributed on 20% at present
Between~30%, Daqing oil field average out to 28%, Shengli Oil Field average out to 25%, Changqing oilfields average out to 20%.Oil pumping function
Consumption has accounted for the one third of oil field energy consumption.From the point of view of each oil field computer collecting system data analysis of China Petroleum in 2014, oil field machine, which is adopted, is
System total power consumption accounts for 50% or so of oil field business total power consumption.
(2) screw pump Lifting Technique
Screw pump is made of stator and rotor, and the transmission to medium is realized by the rotary motion of rotor.Screw rod pump configuration
Simply, small, light-weight, little power consumption, efficient.Since elastomer stator limits, lift is small, can not take out deeply.It is most of at present
Field application is the well in well depth 1000m or so.
(3) submersible electric pump oil extraction system
Submersible electric pump is also known as electric submersible centrifugal pump, mainly by centrifugal multistage pump multiple centrifugal pump, separator, protector and submersible motor group
At it is big to be mainly characterized by discharge capacity, is best suited for middle and high Water-cut Period and recovers the oil, and manages conveniently.Submersible electric pump oil extraction system is in state
Inside and outside field use is more and more extensive, and major defect is that depth of setting is limited by power of motor, the centrifugal pump that 2000 meters of lift
Up to 20 meters, equipment is expensive, and initial investment is high；Daily maintenance requires high；It still can not work normally for 4000 meters of ultra-deep liftings.
There are large area heavy losses in the second half year in 2014, international oil price slump, China oil field, and domestic each oil field exists
Try every possible means cost efficiency, many stripper wells are forced to shut down without benefit.In addition, continually developing with petroleum resources, exploitation
Reservoir depth increases year by year, and the rapid rising of Cut of Oilfield, exploiting economy benefit declines year by year, and old block answers timing changing to adopt
Oily mode could extend the economic exploitation phase in oil field, and how new block selects best artificial lifting way, and oil field is made to obtain bigger
Economic benefit, be the major issue that enterprise faces.
In conclusion existing cannot meet the needs of economic development there are three types of main machine mining method, urgent need allows operating cost
Maintain lower level new oil production method.
Invention content
The present embodiments relate to a kind of positive displacement pump and the extracting device of oil for the positive displacement pump that recovers the oil, and can at least solve existing
The segmental defect of technology.
The present embodiments relate to a kind of positive displacement pump, including shell, the wherein one end open of the shell constitutes drain
End, the shell have cylindrical pump chamber, offered on the side wall of the shell it is at least one be connected with the pump chamber into
Liquid mouth, is also formed with apocenosis passage in the side wall of the shell, the apocenosis passage respectively with the pump chamber and the drain side
Conducting；
It can be formed at least in the rotor block that own axes rotate, the rotor block in being coaxially embedded in the shell
One, for the liquid of inlet side to be directed to the through hole in the apocenosis passage, one is slidably equipped in each through hole
A plunger, each plunger is set gradually along the axial direction of the rotor block and axis is vertical with the axis of the rotor block；In
The driving crank for driving the past polyslip in the corresponding through hole of each plunger is coaxially provided in the rotor block,
The driving crank has the driving end of the connecting pin being connected with the rotor block and the driving device for connecting peripheral hardware, each institute
Plunger is stated to connect with the driving crank.
As one of embodiment, the driving crank includes connecting pin shaft part, driving end shaft part and multiple gearratio of cycloid axle formation,
The connecting pin shaft part and the driving end shaft part are coaxial with the rotor block, and each gearratio of cycloid axle formation is along the rotor block
It is axially set in turn between the connecting pin shaft part and the driving end shaft part, the axis of each gearratio of cycloid axle formation deviates institute
The axis of connecting pin shaft part is stated, each plunger correspondence is connect with gearratio of cycloid axle formation described in one of them.
As one of embodiment, each plunger offers perforating, and the radius of each perforating, which is more than, to be corresponded to
The gearratio of cycloid axle formation radius and the gearratio of cycloid axle formation the sum of eccentricity, each plunger is set in the corresponding eccentric shaft
Section is outer.
As one of embodiment, each plunger includes plunger body and two are held push piece, each perforating difference
It is opened in the corresponding plunger body, it is each described to hold push piece to all have curvature identical as the corresponding gearratio of cycloid axle formation curvature
Arc hold and push away slot, it is each it is described hold push away slot central angle be respectively less than 180 ° and notch direction with the corresponding plunger body
It is axial identical, each plunger two described in hold and push away the setting of slot face and cell wall reclines with the corresponding gearratio of cycloid axle formation.
It is each described to hold push piece and be removably mounted in the corresponding plunger body as one of embodiment.
As one of embodiment, in each plunger, including at least one first plunger and at least one second plunger, respectively
The axis of first plunger is mutually parallel, and the axis of each second plunger is mutually parallel, and the axis of first plunger
It is vertical each other with the axis of second plunger.
It is opposite on the inner wall of the shell to offer lead channel and sump pit, each inlet as one of embodiment
It is connected to the lead channel, the sump pit is connected with the drain side.
As one of embodiment, along the axial direction of the rotor block, each first plunger intersects with each second plunger
Arrangement.
The present embodiments relate to a kind of extracting device of oil, including positive displacement pump as described above, the biographies of the driving crank
Moved end is connected with driving device.
As one of embodiment, the driving device includes submersible motor, one end far from its drain side of the shell
It is connected with the jointing of the submersible motor, the output axis connection of the driving end and the submersible motor.
The embodiment of the present invention at least has the advantages that：Positive displacement pump provided in this embodiment is simple in structure, equipment
It is of low cost；When applied to recovering the oil, since diameter of plunger is small, liquid displacement is low, can also be into if reducing the rotary speed of rotor block
One step reduces discharge capacity, therefore disclosure satisfy that conventional oil field and the oil recovery discharge capacity of low permeability oil and gas field and the requirement of lift, can be preferable
Ground adapts to the demand of the small onshore oil field of Liquid output, solves in the prior art using high energy consumption, lift existing for the latent centrifugal pump of electricity
Low, the problems such as initial investment is big, oil and gas development is of high cost and the low, energy using efficiency existing for trip fine strain of millet formula pumping production system
The problems such as consumption is high, oil and gas development is of high cost.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of positive displacement pump provided in an embodiment of the present invention；
Fig. 2 be Fig. 1 along the sectional view of A-A；
Fig. 3 is the structural schematic diagram of extracting device of oil provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Such as Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of positive displacement pump 1, including shell 101, which has circle
Cylindrical pump chamber has and encloses the pump chamber for setting and being formed by cylindrical annular inner wall, usually, above-mentioned shell 101 uses hollow circle
Cylindrical shell 101, it is of course also possible to use the shell 101 of the shapes such as cuboid.The wherein one end open of the shell 101 is constituted
Drain side, the other end can be closing setting can also be opening be arranged, foundation actual demand respective design；This
In embodiment, 101 both ends open of shell, wherein one end are drain side, and the other end can connect corresponding equipment as needed.
Such as Fig. 1-Fig. 2, at least one inlet 105 be connected with the pump chamber, the shell are offered on the side wall of the shell 101
Apocenosis passage 106 is also formed in 101 side wall, the apocenosis passage 106 is connected with the pump chamber and the drain side respectively.
In in the shell 101 coaxially be embedded with can be formed in the rotor block 102 that own axes rotate, the rotor block 102 to
Few one for the liquid of 105 side of inlet to be directed to the through hole in the apocenosis passage 106, in each through hole
Be slidably equipped with a plunger 103, each plunger 103 set gradually along the axial direction of the rotor block 102 and axis with described turn
The axis of daughter 102 is vertical；Each plunger 103 is respectively connected with the drive of its past polyslip in the corresponding through hole of driving
Motivation structure.Wherein, quantity and dimensions of above-mentioned inlet 105 etc. can be designed according to actual use situation etc., such as
Using single bigbore inlet opening or using multiple small-bore inlet openings etc..Above-mentioned through hole is used for inlet 105
The liquid of side is directed in apocenosis passage 106, and to realize this function, the quantity of through hole and position are preferably correspondingly arranged, in rotor
In own axes rotary course, each through hole can connect body 102 at least part face of wherein at least one inlet 105
It is logical, and be connected to at least part face of apocenosis passage 106, so that the liquid entered via inlet 105 can enter through hole
It is interior, then be directed into apocenosis passage 106；It is embodied in structure, along the axial direction of rotor block 102, each inlet 105 and drain side
The distance between mouth is a zone distance value, and the distance between each through hole and drain side are also a zone distance value, each
Zone distance value corresponding to inlet 105 is at least partly weighed with the zone distance value corresponding at least one of which through hole
Folded (not comprising only there are one the identical situations of endpoint value)；By taking above-mentioned shell 101 is vertically arranged as an example, on each inlet 105
Height (horizontal plane in other words) where end and/or lower end should be located in one of the height where the upper and lower ends of through hole
Between (horizontal plane in other words).In the present embodiment, above-mentioned each inlet 105 is preferably the inlet opening radially opened up along shell 101
Or lead channel (arc groove i.e. identical with 101 curvature of shell)；Above-mentioned each through hole is preferably radially to be opened up along rotor block 102
The axis of through-hole, the axis and rotor block 102 of through hole intersects vertically.Above-mentioned apocenosis passage 106 is preferably in shell 101
The corresponding sump pit opened up on inner wall, can be parallel to the axial a plurality of drain conduit of shell 101, can also be one complete
Curved channel, each sump pit preferably extend opens up to drain side, can enclose and set between 102 outer wall of each sump pit and rotor block
Form an exhaust chamber；Certainly, above-mentioned apocenosis passage 106 can also be the flow channel for liquids being formed in 101 wall of shell, and correspondence need to be
At least one drainage hole be connected with flow channel for liquids is opened up on 101 inner wall of shell, the setting of drainage hole then can refer to each inlet
105 set-up mode, such as can and one by one face setting identical as 105 quantity of inlet.Undoubtedly free burial ground for the destitute, the length of each plunger 103
Length of the degree less than corresponding through hole.In 102 rotation process of rotor block, each through hole can periodically with corresponding feed liquor
Mouth 105 is connected, and liquid enters via inlet 105 in each through hole, and space can be conceded to accommodate liquid by the sliding of plunger 103
Body, then the side for storing liquid and the conducting of apocenosis passage 106 so that each through hole are rotated by rotor block 102, pass through column
Liquid in through hole is pushed into apocenosis passage 106 by 103 activity of plug, realizes pumping out for liquid.Appearance provided in this embodiment
Product formula pump 1 is simple in structure, and equipment cost is cheap；When applied to recovering the oil, since 103 diameter of plunger is small, liquid displacement is low, if reducing
The rotary speed of rotor block 102 can also further decrease discharge capacity, therefore disclosure satisfy that adopting for conventional oil field and low permeability oil and gas field
The requirement of oily discharge capacity and lift can preferably adapt to the demand of the small onshore oil field of Liquid output, solve to use electricity in the prior art
High energy consumption existing for latent centrifugal pump, the problems such as lift is low, initial investment is big, oil and gas development is of high cost and using trip fine strain of millet formula oil pumping
The problems such as efficiency existing for machine oil extraction system is low, high energy consumption, oil and gas development of high cost.
In above-mentioned positive displacement pump 1, the core components such as pump housing, through hole, plunger 103 are cylindrical components, processing
When can reach very high class fit, rub between component small, have volumetric efficiency height, smooth running, discharge uniformity it is good,
The advantages that noise is low, operating pressure is high.
The structure for connecting above-mentioned positive displacement pump 1, for above-mentioned for driving plunger 103 in through hole toward polyslip
Driving mechanism may be used such as lower structure：Such as Fig. 1, in being coaxially provided in the rotor block 102 for driving each plunger
103 have and the rotor block in the corresponding through hole toward the driving crank 104 of polyslip, the driving crank 104
The driving end of 102 connected connecting pins and the driving device for connecting peripheral hardware, each plunger 103 with the driving crank
104 connections.Above-mentioned rotor block 102 and driving crank 104 are coaxial, and as rotor block 102 and the main shaft of driving crank 104 is coaxial,
This is to be apparent from ground for those skilled in the art；Correspondence opens up accommodating cavity in rotor block 102, to house the driving crank
104, which opens up along rotor block 102 is axial, can be the chamber of cylindrical shape, and with the main shaft of driving crank 104
Coaxially；In the present embodiment, it is preferable that 104 both ends of above-mentioned driving crank are stretched out in respectively except the both ends of rotor block 102, wherein
Its driving end connects the pump case of this positive displacement pump 1 101 and jointing screw thread convenient for being connect with the driving device of peripheral hardware
The structure connect, the connecting pin of above-mentioned driving crank 104 stretch out except the corresponding end of rotor block 102 and with the jointing of respective side
Between by bearing fit realization be rotatably connected, in addition, between rotor block 102 and pump case 101 and rotor block 102 with even
It can be by bearing fit, to ensure the job stability and reliability of rotor block 102 between connector.
To those skilled in the art, it is easy to it is well established that realize that driving crank 104 drives each plunger 103 to exist
It connect with the eccentric component of driving crank 104, such as connects toward the function of polyslip, above-mentioned each plunger 103 in corresponding through hole
Bar axle journal or crank arm etc. can be realized the connection between plunger 103 and corresponding eccentric component by connecting rod etc., and passed through
Eccentric component driving plunger 103 slides straightly movement in corresponding through hole, this is those skilled in the art according to existing
There is the easily designed realization of technology, specific details are not described herein again.Fig. 1 is referred to, as a preferred embodiment of the present embodiment,
Above-mentioned driving crank 104 is optimized as follows：The driving crank 104 includes connecting pin shaft part 1041, driving end shaft part 1043
And multiple gearratio of cycloid axle formation 1042, the connecting pin shaft part 1041 and the driving end shaft part 1043 with the rotor block 102
Coaxially, each gearratio of cycloid axle formation 1042 is set in turn in the connecting pin shaft part 1041 and institute along the axial direction of the rotor block 102
Between stating driving end shaft part 1043, the axis of each gearratio of cycloid axle formation 1042 deviates the axis of the connecting pin shaft part 1041,
Each correspondence of the plunger 103 is connect with gearratio of cycloid axle formation described in one of them 1042.Correspondingly, each plunger 103 opens up
There are perforating 1031, the radius of each perforating 1031 to be more than the radius and the bias of the corresponding gearratio of cycloid axle formation 1042
The sum of the eccentricity of shaft part 1042, each plunger 103 are set in outside the corresponding gearratio of cycloid axle formation 1042, i.e. driving crank
104 sequentially pass through each plunger 103, and each gearratio of cycloid axle formation 1042 can be freely rotated in corresponding perforating 1031.Further, such as
Fig. 1 and Fig. 2, each plunger 103 include that plunger body and two hold push piece 1032, and each perforating 1031 opens up respectively
It is each described to hold push piece 1032 and all have curvature and corresponding 1042 curvature of the gearratio of cycloid axle formation in the corresponding plunger body
Identical arc, which is held, pushes away slot, it is each it is described hold push away slot central angle be respectively less than 180 ° and notch direction with the corresponding plunger sheet
The axial direction of body is identical, each plunger 103 two described in hold push away slot face setting and cell wall with the corresponding eccentric shaft
Section 1042 reclines；Namely two hold and push away the cell wall of slot and be located on same cylindrical surface, and cannot to be enclosed one complete for two cell walls
Cylindrical surface is apparent from ground, and the diameter on the cylindrical surface is identical as the diameter of gearratio of cycloid axle formation 1042, to which gearratio of cycloid axle formation 1042 is with transmission
When holding the rotations such as shaft part 1043, outside wall surface can be held with the two of corresponding plunger 103 always pushes away slot fitting, is acted in its eccentric rotary
Under, two can be pushed to hold and push away slot alternately closer or far from the axis of rotor block 102, that is, drive corresponding plunger 103 in through hole
Toward polyslip；Hold and push away the sum of the central angle of cell wall of slot and be less than 360 ° due to two, i.e., two hold push away slot between there is certain resigning
Space allows gearratio of cycloid axle formation 1042 to have partial period not contact with holding to push away slot or wear hole wall in rotation process, to avoid
Gearratio of cycloid axle formation 1042 generates plunger 103 active force along 103 radial direction of plunger；Those skilled in the art can be according to reasonable
Ground design (including two hold the central angle etc. for pushing away slot) realizes that gearratio of cycloid axle formation 1042 can consistently drive plunger in rotation process
The 103 past polyslips in corresponding through hole.
During above-mentioned driving crank 104 forms, traditional crank arm and rod journal are integrated into a gearratio of cycloid axle formation 1042,
The structure of the driving crank 104 can be simplified, convenient for design, structure precision is high, can accurately realize the driving control to plunger 103
System.It should be noted that being not limited to above-mentioned drive connection structure between above-mentioned gearratio of cycloid axle formation 1042 and plunger 103, such as
The realizations drive connection relationships between the two such as connecting rod connection can also be used, this is that those skilled in the art are easy to determining,
And will not be described here in detail.
It is removably mounted in the corresponding plunger body it is further preferred that holding push piece 1032 described in each, such as may be used
It is bolted；Above-mentioned Detachable connection structure can facilitate the mating connection between driving crank 104 and each plunger 103
Relationship so that can mutually be separated between driving crank 104 and plunger 103, be easily installed maintenance.Wherein, respectively holding push piece 1032 can
To be mounted on 1031 hole wall of perforating of plunger body；Alternatively, can open up one or two on plunger body outer wall
A mounting groove (having illustrated, do not mark), the slot bottom of each mounting groove is penetrated through by corresponding perforating 1031, using a mounting groove
When, it is opened on the connecting pin of close rotor block 102 or the outer wall of driving end of plunger body and (is put vertically with pump case 101
It is set to example, then is corresponded on the top of the plunger body or bottom end and opens up the mounting groove), two, which hold push piece 1032, is installed in the installation
In slot and it holds and pushes away slot and extend to be just bonded with gearratio of cycloid axle formation 1042 at corresponding perforating 1031, when using two mounting grooves,
Two mounting grooves are respectively in the axis both sides of plunger body along the axial direction of rotor block 102, and configuration can be corresponded in each mounting groove
(can be understood as each supporting parts includes two decomposition parts to the above-mentioned push piece 1032 that holds, and two are decomposed part and are located at two peaces
In tankage).
As a kind of specific implementation mode of positive displacement pump 1 provided in this embodiment, such as Fig. 1, in each plunger 103,
Including at least one first plunger and at least one second plunger, the axis of each first plunger is mutually parallel, and each described
The axis of two plungers is mutually parallel, and the axis of first plunger and the axis of second plunger are vertical each other.When first
When the both ends of through hole where plunger are connected to feed pathway and apocenosis passage 106 respectively, the through hole where the second plunger
Both ends blocked by 101 inner wall of pump case；When the both ends of the through hole where the first plunger are blocked by 101 inner wall of pump case
When, the both ends of the through hole where the second plunger are connected to feed pathway and apocenosis passage 106 respectively.It, can by above structure
To improve the working efficiency of this positive displacement pump 1.It is further preferred that such as Fig. 1, along the axial direction of the rotor block 102, each described the
One plunger and each second plunger arranged crosswise, i.e., there are one the second plungers between the first plunger of each adjacent two, per adjacent
There are one the first plungers between two the second plungers.
It is further preferred that such as Fig. 1-Fig. 2, each inlet 105 is oppositely arranged with apocenosis passage 106, wherein each feed liquor
Mouth 105 is preferably along the axial interval setting successively of rotor block 102, and apocenosis passage 106 is preferably then using above-mentioned in shell
The corresponding structure for opening up sump pit on 101 inner walls.By reasonably designing, rotation and each plunger 103 based on rotor block 102
Relative motion between linear reciprocation sliding so that liquid can be transported to apocenosis passage 106 by each through hole by inlet 105
It is interior.Lead channel 109 can be further opened up on the inner wall of shell 101, each inlet 105 is connected to lead channel 109, convenient for each
The drain of through hole operates.
In the present embodiment, above-mentioned 103 quantity of plunger can select in 2~200 ranges, and the quantity of inlet 105 is 1
Between~6 groups.
Embodiment two
The present embodiments relate to a kind of extracting device of oil, including the positive displacement pump 1 that above-described embodiment one is provided, the biography
The driving end of dynamic crankshaft 104 is connected with driving device.
Such as Fig. 3, as one of embodiment, the driving device includes submersible motor 2, and the shell 101 is arranged far from it
The one end (end can connect a lower connector 108) at liquid end is connected with the jointing 201 of the submersible motor 2, the transmission
End is connect with the output shaft 202 of the submersible motor 2.Above-mentioned submersible motor 2 and the connection structure of positive displacement pump 1 are this field skills
Art personnel are easily designed according to the prior art, no longer repeat one by one herein.
The drain side of above-mentioned shell 101 can connected pipes, which can be threaded connection with upper connection 107, and pass through this
107 connected pipes of upper connection.Such as Fig. 1, the liquid inlet of annular groove type is offered on the outer wall of the upper connection 107
1071, the apocenosis passage 106 of the liquid inlet 1071 and pump case 101 is connected, offered in the wall of the upper connection 107 to
A few drain through-hole 1072, each drain through-hole 1072 with the hollow cavity of the upper connection 107 and above-mentioned annular groove type
Liquid inlet 1071 be connected to, then each drain through-holes 1072 of the liquid inlet 1071+ of annular groove type constitute the upper connection 107
Liquid flowing channel, for the liquid being discharged in pump case 101 to be directed in oil pipe.Above-mentioned each drain through-hole 1072 preferably be
Inclined design, it is suitable for conventional oil field and the oil recovery discharge capacity of low permeability oil and gas field and the requirement of lift, can preferably adapts to produce
The demand of the small onshore oil field of liquid measure.
Above-mentioned extracting device of oil is had the following advantages that compared with existing machine mining method：
(1) displacement range is good, covers existing beam pumping unit well and recovers the oil
Above-mentioned extracting device of oil displacement range can be controlled in 0.5m3/ d~45m3/ d adapts to China's onshore oil field production requirement.
China's land oil wells Liquid output is smaller, and the Liquid output of low permeability oil field is even less than 1m3/ d, is mainly adopted using beam pumping unit
Oil, well number are more than 200,000 mouthfuls, account for 90% or more of production well sum.And the latent centrifugal pump of electricity is mainly used in high yield straight well, it is special
Point is huge discharge (> 100m3/ d), low lift (< 1800m), application range is smaller, cannot substitute beam pumping unit well.
In the present embodiment, by reducing 103 diameter of plunger, the rotary speed of 103 cavity of plunger is reduced, can be further decreased
Discharge capacity, meets conventional oil field and the oil recovery discharge capacity of low permeability oil and gas field and the requirement of lift, solves that system effectiveness is low, high energy consumption,
The big equal oil and gas developments of initial investment problem of high cost.
(2) significantly energy saving
Above-mentioned extracting device of oil electric energy almost all participates in lifting oil gas, and theoretical efficiency is up to 95%, with beam pumping unit
Average operating efficiency is only 26% to compare, and gross efficiency improves 64%.China's onshore oil field beam pumping unit is more than 200,000 mouthfuls, year
Power consumption exceedes 10,000,000,000 kilowatt hours, and novel positive displacement pump 1 substitutes trip fine strain of millet formula pumping production and is expected to save electric energy every year to be more than 6,400,000,000
Kilowatt hour.
(3) service life is long
The stable load of above-mentioned extracting device of oil, and carried by oil pipe, without protector as main support, work
Make operating mode to get well than electricity dives centrifugal pump also, in addition, extracting device of oil is efficient, required Electric Submersible Motor Power is small, further improves
Service life.By theoretical comparative analysis, the service life of new pump is up to 9 years or more, saves a large amount of operation costs every year.
(4) at low cost, save ground cost of erection and installation cost
1 separate unit cost of positive displacement pump is well below electric submersible centrifugal pump.The discharge capacity of electric submersible centrifugal pump is smaller, system
Efficiency is lower, such as discharge capacity is 50m3The electric submersible pump efficiency of/d is only 42%.And above-mentioned positive displacement pump 1 is applied, efficiency is up to
95%, the required power of motor for lifting identical Liquid output is smaller than electric submersible centrifugal pump by 50%, the short half of motor length；On and
It states positive displacement pump 1 and is not afraid of cavitation erosion, be not necessarily to separator；1 length of above-mentioned positive displacement pump is short more than centrifugal pump, and single-stage positive displacement pump 1 is (only
One plunger 103) length only 0.5m, and centrifugal pump length reaches 20m；
Above-mentioned extracting device of oil is not necessarily to huge ground installation and sapce charge for the new well of a bite.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (7)
1. a kind of positive displacement pump, it is characterised in that：Including cylindrical housings, the wherein one end open of the shell constitutes drain
End, the shell have cylindrical pump chamber, offered on the side wall of the shell it is at least one be connected with the pump chamber into
Liquid mouth, is also formed with apocenosis passage in the side wall of the shell, the apocenosis passage respectively with the pump chamber and the drain side
Conducting；
In coaxially at least one embedded with that can be formed in the rotor block that own axes rotate, the rotor block in the shell
Through hole for being directed to the liquid of inlet side in the apocenosis passage is slidably equipped with a column in each through hole
Plug, each plunger is set gradually along the axial direction of the rotor block and axis is vertical with the axis of the rotor block；In described
It is coaxially provided in rotor block for driving each plunger in the corresponding through hole toward the driving crank of polyslip, it is described
Driving crank has the driving end of the connecting pin being connected with the rotor block and the driving device for connecting peripheral hardware, each column
Plug is connect with the driving crank；
The driving crank includes connecting pin shaft part, driving end shaft part and multiple gearratio of cycloid axle formation, the connecting pin shaft part and institute
State that driving end shaft part is coaxial with the rotor block, each gearratio of cycloid axle formation is set in turn in described along the axial direction of the rotor block
Between connecting pin shaft part and the driving end shaft part, the axis of each gearratio of cycloid axle formation deviates the axis of the connecting pin shaft part
Line, each plunger correspondence are connect with gearratio of cycloid axle formation described in one of them；
Each plunger offers perforating, and the radius of each perforating is more than the radius of the corresponding gearratio of cycloid axle formation
The sum of with the eccentricity of the gearratio of cycloid axle formation, each plunger is set in outside the corresponding gearratio of cycloid axle formation；
Each plunger includes that plunger body and two hold push piece, and each perforating is opened in the corresponding plunger respectively
On ontology, it is each it is described hold push piece and all have curvature arc identical with the corresponding gearratio of cycloid axle formation curvature and hold push away slot, it is each described in
It holds and pushes away the central angle of slot and be respectively less than 180 ° and notch direction is identical as the corresponding axial direction of the plunger body, each column
Plug two described in hold push away slot face setting and cell wall recline with the corresponding gearratio of cycloid axle formation.
2. positive displacement pump as described in claim 1, it is characterised in that：Push piece, which is held, described in each is removably mounted to corresponding institute
It states in plunger body.
3. positive displacement pump as claimed in claim 1 or 2, it is characterised in that：In each plunger, including at least one first column
Plug and at least one second plunger, the axis of each first plunger are mutually parallel, and the axis of each second plunger is mutually flat
Row, and the axis of first plunger and the axis of second plunger are vertical each other.
4. positive displacement pump as claimed in claim 3, it is characterised in that：On the inner wall of the shell it is opposite offer lead channel and
Sump pit, each inlet are connected to the lead channel, and the sump pit is connected with the drain side.
5. positive displacement pump as claimed in claim 3, it is characterised in that：Along the axial direction of the rotor block, each first plunger
With each second plunger arranged crosswise.
6. a kind of extracting device of oil, it is characterised in that：Include the positive displacement pump as described in any one of claim 1 to 5, the biography
The driving end of dynamic crankshaft is connected with driving device.
7. extracting device of oil as claimed in claim 6, it is characterised in that：The driving device includes submersible motor, the shell
The jointing of one end and the submersible motor far from its drain side be connected, the driving end is defeated with the submersible motor
Go out axis connection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755744.8A CN107461320B (en) | 2017-08-29 | 2017-08-29 | Positive displacement pump and extracting device of oil |
| PCT/CN2017/118171 WO2019041681A1 (en) | 2017-08-29 | 2017-12-25 | Positive-displacement pump and oil production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755744.8A CN107461320B (en) | 2017-08-29 | 2017-08-29 | Positive displacement pump and extracting device of oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107461320A CN107461320A (en) | 2017-12-12 |
| CN107461320B true CN107461320B (en) | 2018-10-26 |
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ID=60550689
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710755744.8A Active CN107461320B (en) | 2017-08-29 | 2017-08-29 | Positive displacement pump and extracting device of oil |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107461320B (en) |
| WO (1) | WO2019041681A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461320B (en) * | 2017-08-29 | 2018-10-26 | 海斯比得（武汉）石油科技有限公司 | Positive displacement pump and extracting device of oil |
| US11867176B1 (en) * | 2021-04-16 | 2024-01-09 | Lex Submersible Pumps FZE Company | Method and apparatus for a submersible multistage labyrinth-screw pump |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU544768A1 (en) * | 1975-06-10 | 1977-01-30 | Pump for lifting fluid from wells | |
| US4291588A (en) * | 1976-12-06 | 1981-09-29 | Camact Pump Corp. | Transmission |
| SU1211454A1 (en) * | 1984-06-07 | 1986-02-15 | Башкирский государственный научно-исследовательский и проектный институт нефтяной промышленности | Well sucker-rod pump |
| SU1315654A1 (en) * | 1985-01-07 | 1987-06-07 | Азербайджанский Институт Нефти И Химии Им.М.Азизбекова | Well pump drive |
| CN2189217Y (en) * | 1992-06-06 | 1995-02-08 | 翟金涛 | Rotor piston pump |
| CN2291510Y (en) * | 1996-09-03 | 1998-09-16 | 莱芜市钢城企业集团公司 | Double-function rotary piston pump with two cylinders |
| DE19954728A1 (en) * | 1999-11-12 | 2001-05-31 | Michael Kresin | Rotary piston device |
| CN2929317Y (en) * | 2006-07-18 | 2007-08-01 | 中国石油天然气股份有限公司 | Pressure bearing type bias coupling |
| CN200996365Y (en) * | 2007-01-09 | 2007-12-26 | 陕西理工学院 | Oil pump |
| GB0701061D0 (en) * | 2007-01-19 | 2007-02-28 | Head Phillip | Wireline or coiled tubing deployed electric submersible pump |
| CN201218174Y (en) * | 2008-06-13 | 2009-04-08 | 台州市压缩机制造有限公司 | Rotating gas cylinder compressor |
| CN101718273A (en) * | 2009-11-12 | 2010-06-02 | 陕西关中压缩机制造有限公司 | Liquid pump of rotary cylinder piston |
| CN101871450B (en) * | 2010-06-08 | 2012-08-22 | 余文凌 | Small-flow high-lift radial piston pump |
| CN107461320B (en) * | 2017-08-29 | 2018-10-26 | 海斯比得（武汉）石油科技有限公司 | Positive displacement pump and extracting device of oil |
| CN207454228U (en) * | 2017-08-29 | 2018-06-05 | 海斯比得（武汉）石油科技有限公司 | Positive displacement pump and extracting device of oil |
-
2017
- 2017-08-29 CN CN201710755744.8A patent/CN107461320B/en active Active
- 2017-12-25 WO PCT/CN2017/118171 patent/WO2019041681A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2019041681A1 (en) | 2019-03-07 |
| CN107461320A (en) | 2017-12-12 |
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