CN207539007U - Positive displacement pump, power plant and oil extraction system - Google Patents

Positive displacement pump, power plant and oil extraction system Download PDF

Info

Publication number
CN207539007U
CN207539007U CN201721689713.9U CN201721689713U CN207539007U CN 207539007 U CN207539007 U CN 207539007U CN 201721689713 U CN201721689713 U CN 201721689713U CN 207539007 U CN207539007 U CN 207539007U
Authority
CN
China
Prior art keywords
plunger
pump
positive displacement
rotor block
runner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201721689713.9U
Other languages
Chinese (zh)
Inventor
魏小梅
郑瑞波
刘运荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu oweenbo Petroleum Technology Co.,Ltd.
Original Assignee
Hayes (wuhan) Petroleum Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hayes (wuhan) Petroleum Technology Co Ltd filed Critical Hayes (wuhan) Petroleum Technology Co Ltd
Priority to CN201721689713.9U priority Critical patent/CN207539007U/en
Application granted granted Critical
Publication of CN207539007U publication Critical patent/CN207539007U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model is related to a kind of positive displacement pump, power plant and the oil extraction systems using the power plant, the positive displacement pump includes pump case, low pressure liquid runner and highly pressurised liquid runner are formed in the side wall of pump case, two groups of flow channel for liquids all extend to pumping out for pump case and hold and connect with reversing unit;Rotor block is coaxially embedded in pump chamber, at least one through hole for being used to be directed to the liquid in low pressure liquid runner in highly pressurised liquid runner is formed in rotor block, plunger is slidably equipped in through hole;It is equipped with to drive each plunger in corresponding through hole toward the driving crank of polyslip in rotor block.The power plant includes the positive displacement pump, booster and reversing unit, and reversing unit is connect with said pump outlet.Above-mentioned positive displacement pump is coordinated using rotor block rotation and piston reciprocation movement, and simple in structure, equipment cost is cheap, operation energy consumption is low, and production efficiency is higher.Positive displacement pump and booster are fitted to each other by above-mentioned power plant, and output pressure can be multiplied.

Description

Positive displacement pump, power plant and oil extraction system
Technical field
The utility model belongs to technical field of oil extraction equipment, and in particular to a kind of positive displacement pump, using the positive displacement pump Power plant and the oil extraction system using the power plant.
Background technology
The non-verified oil reserves in China about 85 × 108T, wherein 73% is imbedded in deep layer.Deep-well and the depth in ultradeep well oil field The oil reservoir position of well and ultradeep well is usually all at 3000 meters to 4000 meters or so, and there are various contradictions for current various mechanical oil recoverys Problem.
(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 ".
The casing programme of deep-well or ultradeep well is more complicated, due to hole deviation, it is azimuthal variation and easily cause oil extraction pump Friction and wear, during using existing common oil well pump, wastage significantly increases, and oil pump plunger piston both ends are acted in deep-well Pressure difference up to number 10Mpa, the effect of pressure will be such that the annular space between oil well pump and plunger further increases, so as to make wastage into One step increases, and influences the pump efficiency of oil well pump;In addition, common oil well pump integral strength is low, swollen pump phenomenon easily occurs in deep-well, draws Rise pump damage and underground break it is de-.
In order to meet the needs of deep mining, ground is more than 160KN using large-scale pumping unit, maximum load, makes trip fine strain of millet formula Pumping unit volume dramatically increases, and increases one-time investment.
(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.Since rubber is determined Son limitation, the lift of screw pump is small, and current most of field applications are the wells in well depth 1000m or so, can not be taken out deeply.
(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 Into 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 requirement is high;It still can not work normally for 4000 meters of ultra-deep liftings.
In conclusion the demand of the existing economic development that cannot meet deep-well and ultradeep well there are three types of main machine mining method, Urgent need allows operating cost to maintain lower level new oil production method.
Utility model content
The utility model embodiment is related to a kind of positive displacement pump, using the power plant of the positive displacement pump and using the power The oil extraction system of device can at least solve the segmental defect of the prior art.
The utility model embodiment is related to a kind of positive displacement pump, and including pump case, the pump case has driving end, pumps out End and the pump chamber of cylinder, are formed with low pressure liquid runner and highly pressurised liquid runner, two groups of liquid in the side wall of the pump case Runner is connected and is all extended to the pump chamber pumps out end described in perforation;
As one of embodiment, in the pump chamber coaxially embedded with can be around the rotor block that own axes rotate, described turn It is formed in daughter at least one for the liquid in the low pressure liquid runner to be directed in the highly pressurised liquid runner Through hole, is slidably equipped with a plunger in each through hole, the axial direction of each plunger along the rotor block set gradually and Axis is vertical with the axis of the rotor block;In being coaxially provided in the rotor block for driving each plunger corresponding Toward the driving crank of polyslip in the through hole, the driving crank has the connecting portion being connected with the rotor block and is used for The driving section of the driving device of peripheral hardware is connected, each plunger is 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 one of them described.
As one of embodiment, each plunger offers perforating, and the radius of each perforating, which is more than, to be corresponded to The sum of the eccentricity of radius and the gearratio of cycloid axle formation of the gearratio of cycloid axle formation, 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 be respectively provided with curvature identical with 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.
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.
The utility model embodiment is related to a kind of power plant, including positive displacement pump as described above;It further includes reciprocating Booster and with the matched reversing unit of the reciprocating-type supercharger, it is described pump out end connect with the reversing unit.
As one of embodiment, the reciprocating-type supercharger includes pressurized cylinder, and the pressurized cylinder has a chamber and point row Two rod cavities in the seat chamber both sides, one end far from the seat chamber of each rod cavity are communicated with inlet and drain Mouthful, piston seat is slidably equipped in the seat intracavitary, the both ends of the piston seat are separately installed with one and are slidedly arranged in respective side rod cavity Piston rod;In being formed with two groups of supercharging runners being connect respectively with the reversing unit in the pressurized cylinder wall body, described in two groups Supercharging runner is connected with the seat chamber and conducting orifice is respectively in the piston seat both sides.
As one of embodiment, the reversing unit includes commutator housing and is set to changing in the commutator housing To mechanism, the pressurized cylinder, the commutator housing are sequentially coaxially concatenated with the pump case, the commutator housing with institute Stating to pump out holds the end of connection to be formed with the two group of first control runner connected respectively with flow channel for liquids described in two groups, the commutation The end being connect with the pressurized cylinder of device housing is formed with two group second connected respectively with being pressurized runner described in two groups and controls Runner.
As one of embodiment, two leakage fluid drams are communicated with high pressure drain runner, high pressure drain runner described in two groups All extend to one end end far from the commutator housing of the perforation pressurized cylinder;Two inlets penetrate through the increasing The side wall of cylinder pressure.
The utility model embodiment is related to a kind of oil extraction system, including power plant as described above, the driving crank Driving section be connected with driving device, the pressurized cylinder is connected with petroleum pipeline and two leakage fluid drams connect with the petroleum pipeline It is logical.
The utility model embodiment at least has the advantages that:
Positive displacement pump provided by the utility model is coordinated using rotor block rotation and piston reciprocation movement, realized to low pressure The supercharging of liquid pumps out, simple in structure, equipment cost is cheap, and operation energy consumption is low, and production efficiency is higher, and service life is long.
Power plant provided by the utility model, positive displacement pump and booster are fitted to each other, which is supercharging Device provides power, and the output pressure of positive displacement pump is multiplied by booster, so as to solve positive displacement pump in the prior art Because the plunger for being limited, being connected by crankshaft length when factors are influenced causes its lift and discharge capacity to be all restricted no more than 8 The defects of.
Oil extraction system provided by the utility model, based on above-mentioned band booster formula positive displacement pump, crude oil output pressure can Up to more than 50MPa can effectively improve lift, disclosure satisfy that 3000 meters or more deep-wells and ultradeep well recover the oil and require.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram of positive displacement pump that the utility model embodiment provides;
Fig. 2 for Fig. 1 along the sectional view of A-A;
Fig. 3 is the structure diagram of power plant that the utility model embodiment provides;
Fig. 4 and Fig. 5 is the assembling structure schematic diagram of the booster that the utility model embodiment provides and reversing unit;
Fig. 6 is sectional views of the Fig. 5 along B-B.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work The all other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one
Such as Fig. 1 and Fig. 2, the utility model embodiment provides a kind of positive displacement pump, including pump case 101, the pump case 101 pump chambers for having driving end, pumping out end and cylinder, are formed with low pressure liquid runner 105 in the side wall of the pump case 101 With highly pressurised liquid runner 106, two groups of flow channel for liquids are connected and are all extended to the pump chamber pumps out end described in perforation;In described At least one be used for can be formed in the rotor block 102 that own axes rotate, the rotor block 102 by being coaxially embedded in pump chamber Liquid in the low pressure liquid runner 105 is directed to the through hole 1021 in the highly pressurised liquid runner 106, it is each described A plunger 104 is slidably equipped in through hole 1021, the axial direction of each plunger 104 along the rotor block 102 is set gradually and axis Line is vertical with the axis of the rotor block 102;In being coaxially provided in the rotor block 102 for driving each plunger 104 Have and the rotor block toward the driving crank 103 of polyslip, the driving crank 103 in the corresponding through hole 1021 102 connecting portions being connected and the driving section for connecting the driving device 4 of peripheral hardware, each plunger 104 are bent with the transmission Axis 103 connects.
Above-mentioned pump case 101 is generally using hollow cylindrical housings, it is of course also possible to use the shell of the shapes such as cuboid Body.Above-mentioned through hole 1021 is for the liquid in low pressure liquid runner 105 to be directed in highly pressurised liquid runner 106, to realize This function, the quantity of through hole 1021 and position are preferably correspondingly arranged, each in rotor block 102 in own axes rotary course 1021 part-time of through hole can be connected at least part face of low pressure liquid runner 105, and have part-time can be with high pressure At least part face of flow channel for liquids 106 connects, so that the liquid entered via low pressure liquid runner 105 can enter through hole In 1021, then it is directed into highly pressurised liquid runner 106.Preferably, above-mentioned low pressure liquid runner 105 and highly pressurised liquid runner 106 Both preferably it is the corresponding liquid flow straight slot opened up on 101 inner wall of pump case, a plurality of stream of housing axial direction can be parallel to Road slot or a complete continuous flow path groove, each flow path groove, which extends to open up to above-mentioned, pumps out end, and each flow path groove is with turning It can be enclosed between 102 outer wall of daughter and set to form a liquid flow cavity;Alternatively, above-mentioned low pressure liquid runner 105 and highly pressurised liquid stream Road 106 can also be formed at the flow channel for liquids in 101 wall of pump case, and correspondence need to open up at least one on 101 inner wall of pump case A delivery hole be connected with flow channel for liquids, the setting of delivery hole are preferably to correspond configuration etc. with above-mentioned through hole 1021, This is that those skilled in the art are easily designed according to actual conditions, is specifically omitted herein.Preferred implementation as the present embodiment Mode, above-mentioned low pressure liquid runner 105 and highly pressurised liquid runner 106 be be opened in it is complete continuous on 101 inner wall of pump case A flow path groove, two flow path grooves are arranged symmetrically relative to the central axes of pump case 101.
It is easy-to-understand to, the length (axial length) of each plunger 104 is less than the length of corresponding through hole 1021.In rotor In 102 rotation process of body, each through hole 1021 can periodically be connected with low pressure liquid runner 105, and liquid is via low pressure liquid Runner 105 enters in each through hole 1021, can concede space by the slip of plunger 104 to accommodate liquid, then pass through rotor block 102 Rotation causes the side for storing liquid of each through hole 1021 to be connected with highly pressurised liquid runner 106, will by 104 activity of plunger Liquid in through hole 1021 is pushed into highly pressurised liquid runner 106, realizes pumping out for liquid.
In above-mentioned positive displacement pump 1, the core components such as pump housing, through hole 1021, plunger 104 are cylindrical components, Very high class fit can be reached during processing, rubbed between component small, there is volumetric efficiency height, smooth running, uniform flow The advantages that property is good, noise is low, operating pressure is high.
Above-mentioned rotor block 102 and driving crank 103 are coaxial, and as rotor block 102 and the main shaft of driving crank 103 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 103, which opens up along rotor block 102 is axial, can be the chamber of cylindrical shape, and with the main shaft of driving crank 103 Coaxially;In the present embodiment, it is preferable that above-mentioned 103 both ends of driving crank are stretched out in respectively except the both ends of rotor block 102, wherein, Its driving section with the driving device 4 of peripheral hardware convenient for connecting, and for the structure that pump case 101 is threadedly coupled with jointing, on It states except the corresponding end of the connecting portion stretching rotor block 102 of driving crank 103 and passes through axis between the jointing of respective side It holds cooperation realization to be rotatably connected, in addition, between rotor block 102 and pump case 101 and between rotor block 102 and jointing It can be by bearing fit, to ensure the job stability of rotor block 102 and reliability.
To those skilled in the art, it is easy to it is well established that realize that driving crank 103 drives each plunger 104 to exist It is connect in corresponding through hole 1021 toward the function of polyslip, above-mentioned each plunger 104 with the eccentric component of driving crank 103, Such as rod journal or crank arm can realize the connection between plunger 104 and corresponding eccentric component by connecting rod etc., and Plunger 104 is driven to make straight line sliding motion in corresponding through hole 1021 by the eccentric component, this is people in the art Member is according to the easily designed realization of the prior art, and specific details are not described herein again.Fig. 2 is referred to, one as the present embodiment is excellent Embodiment is selected, above-mentioned driving crank 103 is optimized as follows:The driving crank 103 includes connecting pin shaft part 1031, driving end Shaft part 1033 and multiple gearratio of cycloid axle formation 1032, the connecting pin shaft part 1031 and the driving end shaft part 1033 with described turn Daughter 102 is coaxial, and the axial direction of each gearratio of cycloid axle formation 1032 along the rotor block 102 is set in turn in the connecting pin shaft part Between 1031 and the driving end shaft part 1033, the axis of each gearratio of cycloid axle formation 1032 deviates the connecting pin shaft part 1031 Axis, each plunger 104 correspondence connect with gearratio of cycloid axle formation one of them described 1032.Correspondingly, each plunger 104 Offer perforating 1041, the radius of each perforating 1041 be more than the radius of the corresponding gearratio of cycloid axle formation 1032 with The sum of eccentricity of the gearratio of cycloid axle formation 1032, each plunger 104 are set in outside the corresponding gearratio of cycloid axle formation 1032, that is, are driven Bent axle 103 sequentially passes through each plunger 104, and each gearratio of cycloid axle formation 1032 can be freely rotated in corresponding perforating 1041.Further Ground, such as Fig. 2 and Fig. 3, each plunger 104 includes plunger body and two are held push piece 1042, and each perforating 1041 divides It is not opened in the corresponding plunger body, it is each described to hold push piece 1042 and be respectively provided with curvature and the corresponding gearratio of cycloid axle formation The identical arc of 1032 curvature, 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 corresponding institute The axial direction for stating plunger body is identical, each plunger 104 two described in hold push away slot face setting and cell wall with corresponding institute Gearratio of cycloid axle formation 1032 is stated to recline;Namely two hold and push away the cell wall of slot and be located on same cylindrical surface, and two cell walls cannot be enclosed One complete cylindrical surface is apparent from ground, and the diameter on the cylindrical surface is identical with the diameter of gearratio of cycloid axle formation 1032, so as to gearratio of cycloid axle formation 1032 When with driving end shaft part 1033 when rotation, outside wall surface can be held with the two of corresponding plunger 104 always pushes away slot fitting, in its bias Under rotary action, two can be pushed to hold and push away slot alternately closer or far from the axis of rotor block 102, that is, corresponding plunger 104 is driven to exist Toward polyslip in through hole 1021;It holds and pushes away the sum of the central angle of cell wall of slot and be less than 360 ° due to two, i.e., two hold to push away between slot and have There is certain bit space that allows, gearratio of cycloid axle formation 1032 is allowed to have partial period not connect with holding to push away slot or wear hole wall in rotation process It touches, so as to which gearratio of cycloid axle formation 1032 be avoided to generate the active force along 104 radial direction of plunger to plunger 104;Those skilled in the art It can realize that gearratio of cycloid axle formation 1032 can link up in rotation process according to reasonable design the central angle etc. of slot (held including two push away) Ground drives plunger 104 in corresponding through hole 1021 toward polyslip.
The present embodiment is rotated and is realized the reciprocating motion of each plunger 104 using the drive rotor block 102 of driving crank 103, Simple in structure, the drive mechanism of no complexity, reliable operation can accurately realize the drive control to plunger 104.Above-mentioned transmission is bent During axis 103 forms, traditional crank arm and rod journal are integrated into a gearratio of cycloid axle formation 1032, the driving crank can be simplified 103 structure, convenient for design, structure precision is high, can accurately realize the drive control to plunger 104.On it should be noted that Above-mentioned drive connection structure is not limited between the gearratio of cycloid axle formation 1032 and plunger 104 stated, can also such as connecting rod be used to connect The drive connection relationship of realizations therebetween is waited, this is that those skilled in the art are easy to determining, and no further details here.
It is removably mounted in the corresponding plunger body it is further preferred that holding push piece 1042 described in each, such as may be used It is bolted;Above-mentioned Detachable connection structure can facilitate the mating connection between driving crank 103 and each plunger 104 Relationship so that can mutually be separated between driving crank 103 and plunger 104, be easily installed maintenance.Wherein, respectively holding push piece 1042 can To be mounted on 1041 hole wall of perforating of plunger body;Alternatively, can be that one or two are opened up 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 1041, 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 Example is set to, then is corresponded on the top of the plunger body or bottom end and opens up the mounting groove), two, which hold push piece 1042, is installed in the installation In slot and it holds and pushes away slot and extend at corresponding perforating 1041 to be just bonded with gearratio of cycloid axle formation 1032, during using two mounting grooves, The axial direction of two mounting grooves along rotor blocks 102 is respectively in the axis both sides of plunger body, and configuration can be corresponded in each mounting groove The above-mentioned push piece 1042 that holds (can be understood as each supporting parts and include two decomposition parts, two are decomposed part and are located at two peaces respectively In tankage).
As a kind of specific embodiment of positive displacement pump 1 provided in this embodiment, such as Fig. 2, in each plunger 104, 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 is vertical each other with the axis of second plunger.When first When the both ends of through hole 1021 where plunger connect respectively with low pressure liquid runner 105 and highly pressurised liquid runner 106, the second column The both ends of through hole 1021 where filling in are blocked by 101 inner wall of pump case;When two of the through hole 1021 where the first plunger End is by 101 inner wall of pump case when being blocked, the both ends of the through hole 1021 where the second plunger respectively with low pressure liquid runner 105 and Highly pressurised liquid runner 106 connects.By above structure, the working efficiency of above-mentioned positive displacement pump 1 can be improved.Further preferably Ground, such as Fig. 2, along the axial direction of the rotor block 102, each first plunger and each second plunger arranged crosswise, i.e., per phase There are one the second plungers between adjacent two the first plungers, and often there are one the first plungers between two neighboring second plunger, may be such that Hydraulic pressure more equalization stable in highly pressurised liquid runner 106.
In the present embodiment, above-mentioned 104 quantity of plunger can select in the range of 2~200, be raised with the supercharging for reaching required Journey needs.
When driving device 4 drives driving crank 103 to rotate, each plunger 104 rotates therewith, while drives rotor block 102 It is rotated in pump case 101.Due to the wobbler action of the eccentric component of driving crank 103, each plunger 104 is driven in own rotation While in corresponding through hole 1021 do straight reciprocating motion again, so as to make the two of plunger 104 ends with respect to pump case Feed liquor chamber and drain chamber are alternatively formed between 101.
Positive displacement pump 1 provided in this embodiment is moved back and forth with plunger 104 using the rotation of rotor block 102 and coordinated, realization pair The supercharging of low pressure liquid pumps out, simple in structure, equipment cost is cheap, and operation energy consumption is low, and production efficiency is higher, and service life is long.
Embodiment two
Such as Fig. 3-Fig. 6, the utility model embodiment provides a kind of power plant, including positive displacement pump 1, reciprocating-type supercharger 2 and with the 2 matched reversing unit 3 of reciprocating-type supercharger;Wherein, the positive displacement pump 1 is preferably using above-described embodiment one The positive displacement pump 1 provided, details are not described herein again for concrete structure, two groups of flow channel for liquids of the positive displacement pump 1 with the pump Chamber is connected and all extends to pump out described in perforation and holds and connect with the reversing unit 3.
Those skilled in the art know, based on the basic functional principle of reciprocating-type supercharger 2, need the low of the booster 2 The alternating oil inlet of two cavitys or oil extraction of compressing cylinder, realize two opposite strokes of its direction alternately, two cavity of low pressure oil cylinder Alternately oil inlet or oil extraction are realized by above-mentioned reversing unit 3.For the structure of above-mentioned power plant provided in this embodiment, Two cavitys for defining the low pressure oil cylinder are respectively the first cavity and the second cavity, in the first stroke of the booster 2, the first chamber Body oil inlet and the second cavity oil extraction;In the second stroke of the booster 2, the first cavity oil extraction and the second cavity oil inlet.Then, lead to It crosses above-mentioned reversing unit 3 to act on, in the first stroke of the booster 2, above-mentioned 106 and first cavity of highly pressurised liquid runner connects Logical, low pressure liquid runner 105 is connected with the second cavity;In the second stroke of the booster 2, above-mentioned highly pressurised liquid runner 106 It is connected with the second cavity, low pressure liquid runner 105 is connected with the first cavity.
Positive displacement pump 1 and booster 2 are fitted to each other by power plant provided in this embodiment, which is supercharging Device 2 provides power, and the output pressure of positive displacement pump 1 is multiplied by booster 2 (in the present embodiment, can be pressurized 2~15 Times), so as to solve positive displacement pump 1 in the prior art because the plunger 104 that is limited, connected by crankshaft length no more than 8 etc. because The defects of element influences and its lift and discharge capacity is caused all to be restricted.
Power plant provided in this embodiment is preferably applied to oil recovery technique field, for this purpose, optimizing the power plant Structure is as follows:
Such as Fig. 4 and Fig. 5, the reciprocating-type supercharger 2 includes pressurized cylinder 201, and the pressurized cylinder 201 has a chamber 202 With two rod cavities 203 for being respectively in 202 both sides of seat chamber, one end far from the seat chamber 202 of each rod cavity 203 connects Inlet 208 and leakage fluid dram are connected with, in being slidably equipped with piston seat 204 in the seat chamber 202, the both ends of the piston seat 204 are distinguished One piston rod 205 being slidedly arranged in respective side rod cavity 203 is installed;In be formed in 201 wall body of pressurized cylinder respectively with institute Two groups of supercharging runners 209 of the connection of reversing unit 3 are stated, runner 209 is pressurized described in two groups and is connected and is connected with the seat chamber 202 Mouth is respectively in 204 both sides of piston seat.This chamber 202 forms the low pressure oil cylinder of above-mentioned booster 2, the piston seat 204 This chamber 202 is divided into two parts cavity, which is the first cavity and the second chamber for forming above-mentioned booster 2 Body;Check valve 207 is both provided at above-mentioned each inlet 208 and leakage fluid dram, is easy-to-understand to, the check valve at inlet 208 207 only allow liquid to enter in corresponding rod cavity 203 from the inlet 208, and the check valve 207 at leakage fluid dram only allows pair The liquid in rod cavity 203 is answered to be discharged through the leakage fluid dram.It is further preferred that such as Fig. 1, Fig. 4 and Fig. 5, the reversing unit 3 includes Commutator housing and the changement being set in the commutator housing, the pressurized cylinder 201, the commutator housing and institute It states pump case 101 sequentially coaxially to concatenate, the commutator housing is formed with respectively with the end for pumping out end connection with two Two group of first control runner 301 of group flow channel for liquids connection, the commutator housing are connect with the pressurized cylinder 201 End is formed with the two group of second control runner 302 connected respectively with being pressurized runner 209 described in two groups, and correspondence is preferably, on One end that two supercharging runners 209 are both preferably the close commutator housings from pressurized cylinder 201 is stated to its 202 direction of chamber to prolong It stretches, so as to dock conducting with above-mentioned two group second control runner 302 respectively.
Compared to the 202/ low pressure oil cylinder of seat chamber that reversing unit 3 is arranged in booster 2 side conventional in the prior art (i.e. The axis of pressurized cylinder 201 is parallel with the axial offset of commutator housing) structure, the present embodiment is by booster 2, reversing unit 3 It is sequentially connected in series with positive displacement pump 1 so that above-mentioned power plant can be applied in the oil well of straight-tube shape recover the oil, and can solve existing The bottleneck problem that technology middle-deep well and ultradeep well recover the oil.
Further, such as Fig. 4-Fig. 6, two leakage fluid drams are communicated with high pressure drain runner 206, high pressure described in two groups Liquid stream road 206 all extends to one end end far from the commutator housing of the perforation pressurized cylinder 201;Two inlets 208 penetrate through the side wall of the pressurized cylinder 201.Based on above-mentioned design, the crude oil in oil well is drawn by two inlets 208, is led to One end connected pipes of the separate commutator housing of pressurized cylinder 201 are crossed, can will correspond to rod cavity by two high pressure drain runners 206 The crude oil drawn in 203 is discharged into oil pipe, and the pressurization based on above-mentioned positive displacement pump 1 Yu booster 2 can reach required raise Journey, so as to which crude oil is lifted on ground.
The reversing arrangement for adapting to the work of booster 2 conventional in the prior art can be used in above-mentioned reversing unit 3, can be by Market is bought;In the present embodiment, the reversing unit 3 is preferably using full-hydraulic automatic reversing device, and concrete structure is herein not It repeats again.
Embodiment three
Such as Fig. 3, the utility model embodiment is related to a kind of oil extraction system, the power dress provided including above-described embodiment two It puts, the driving section of the driving crank 103 is connected with driving device 4, and the pressurized cylinder 201 is connected with petroleum pipeline and two rows Liquid mouth is connected with the petroleum pipeline.Preferably, the driving device 4 include submersible motor 4, the driving end of the pump case with The submersible motor 4 is connected, and the driving section (preferably connect knot with the output axis connection of the submersible motor 4 using spline Structure).The connection structure of above-mentioned submersible motor 4 and positive displacement pump 1 is that those skilled in the art are easily designed according to the prior art, It no longer repeats one by one herein.
Oil extraction system provided in this embodiment, based on above-mentioned 2 formula positive displacement pump 1 of band booster, with existing machine mining method It compares, has the following advantages that:
(1) crude oil output pressure may be up to more than 50MPa, disclosure satisfy that 3000 meters or more deep-wells and ultradeep well recover the oil and want It asks.
(2) it is significantly energy saving
Above-mentioned oil extraction system 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, this oil extraction system substitutes trip fine strain of millet formula pumping production and is expected to save electric energy every year more than 6,400,000,000 kilowatts When.
(3) service life is long
The stable load of above-mentioned oil extraction system, 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 4 power of submersible motor is small, further improves Service life.By theoretical comparative analysis, the service life of new pump saved a large amount of operation costs every year up to 9 years or more.
(4) it is at low cost, save ground cost of erection and installation cost
Above-mentioned power plant separate unit cost is well below electric submersible centrifugal pump.The discharge capacity of electric submersible centrifugal pump is smaller, System effectiveness is lower, such as discharge capacity is 50m3The electric submersible pump efficiency of/d is only 42%.And above-mentioned power plant 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 power plant and is not afraid of cavitation erosion, without separator.
(5) above-mentioned oil extraction system need not huge ground installation and sapce charge for the new well of a bite.
The oil extraction operation process of above-mentioned oil extraction system approximately as:
In upstroke process, two-piston bar 205 moves upwards, the liquid in the upper rod cavity 203 of the compression of upper piston rod 205, Liquid on this in rod cavity 203 is discharged into oil pipe;Meanwhile the fluid pressure in lower rod cavity 203 constantly declines, so as to its inlet Check valve 207 at 208 is opened, from external world's imbibition into the lower rod cavity 203;
During down stroke, two-piston bar 205 moves downward, and the fluid pressure in upper rod cavity 203 constantly declines, outside Boundary's liquid is inhaled on this via its inlet 208 in rod cavity 203;Liquid in the lower rod cavity 203 of the compression of lower piston rod 205, should Liquid in lower rod cavity 203 is discharged into oil pipe.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection domain within.

Claims (10)

1. a kind of positive displacement pump, it is characterised in that:Including pump case, the pump case has driving end, pumps out end and cylinder Pump chamber, be formed with low pressure liquid runner and highly pressurised liquid runner in the side wall of the pump case, two groups of flow channel for liquids are and institute It states pump chamber conducting and all extends to and pump out end described in perforation;
In coaxially at least one embedded with that can be formed in the rotor block that own axes rotate, the rotor block in the pump chamber For the liquid in the low pressure liquid runner to be directed to the through hole in the highly pressurised liquid runner, each through hole A plunger is inside slidably equipped with, the axial direction of each plunger along the rotor block is set gradually and axis of the axis with the rotor block Line is vertical;In being coaxially provided in the rotor block for driving each plunger in the corresponding through hole toward polyslip Driving crank, the driving crank have the connecting portion being connected with the rotor block and the biography for connecting the driving device of peripheral hardware Dynamic portion, each plunger are connect with the driving crank.
2. positive displacement pump as described in claim 1, it is characterised in that: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, each described The axial direction of gearratio of cycloid axle formation along the rotor block is set in turn between the connecting pin shaft part and the driving end shaft part, each described The axis of gearratio of cycloid axle formation deviates the axis of the connecting pin shaft part, and each plunger corresponds to and one of them described eccentric shaft Section connection.
3. positive displacement pump as claimed in claim 2, it is characterised in that:Each plunger offers perforating, each described The radius of perforating is more than the sum of the radius of the corresponding gearratio of cycloid axle formation and the eccentricity of the gearratio of cycloid axle formation, each plunger bushing It is located at outside the corresponding gearratio of cycloid axle formation.
4. positive displacement pump as claimed in claim 3, it is characterised in that:Each plunger holds including plunger body and two and pushes away Part, each perforating are opened in respectively in the corresponding plunger body, it is each it is described hold push piece be respectively provided with curvature with it is corresponding The identical arc of the gearratio of cycloid axle formation curvature, 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 axial direction of the corresponding plunger body is identical, each plunger two described in hold push away slot face setting and cell wall with it is corresponding The gearratio of cycloid axle formation recline.
5. positive displacement pump as described in claim 1, it is characterised in that:In each plunger, including at least one first plunger With at least one second plunger, the axis of each first plunger is mutually parallel, and the axis of each second plunger is mutually parallel, And the axis of first plunger is vertical each other with the axis of second plunger.
6. a kind of power plant, which is characterized in that including:
Positive displacement pump as described in any one of claim 1 to 5;
Reciprocating-type supercharger and with the matched reversing unit of the reciprocating-type supercharger, it is described pump out end with the reversing unit connect It connects.
7. power plant as claimed in claim 6, it is characterised in that:The reciprocating-type supercharger includes pressurized cylinder, the increasing Cylinder pressure has a chamber and is respectively in two rod cavities of the seat chamber both sides, one end far from the seat chamber of each rod cavity Inlet and leakage fluid dram are communicated with, is slidably equipped with piston seat in the seat intracavitary, the both ends of the piston seat are separately installed with a cunning Piston rod in respective side rod cavity;In being formed with connect respectively with the reversing unit two groups in the pressurized cylinder wall body Runner is pressurized, supercharging runner is connected with the seat chamber described in two groups and conducting orifice is respectively in the piston seat both sides.
8. power plant as claimed in claim 7, it is characterised in that:The reversing unit includes commutator housing and is set to Changement in the commutator housing, the pressurized cylinder, the commutator housing are sequentially coaxially concatenated with the pump case, The commutator housing is formed with two groups connected respectively with flow channel for liquids described in two groups with the end for pumping out end connection First control runner, the end being connect with the pressurized cylinder of the commutator housing is formed with flows respectively with being pressurized described in two groups Two group of second control runner of road connection.
9. power plant as claimed in claim 8, it is characterised in that:Two leakage fluid drams are communicated with high pressure drain runner, High pressure drain runner described in two groups all extends to one end end far from the commutator housing of the perforation pressurized cylinder;Two institutes State the side wall that inlet penetrates through the pressurized cylinder.
10. a kind of oil extraction system, it is characterised in that:It is described including the power plant as described in any one of claim 7 to 9 The driving section of driving crank is connected with driving device, the pressurized cylinder be connected with petroleum pipeline and two leakage fluid drams with it is described defeated Oil pipe connects.
CN201721689713.9U 2017-12-07 2017-12-07 Positive displacement pump, power plant and oil extraction system Active CN207539007U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721689713.9U CN207539007U (en) 2017-12-07 2017-12-07 Positive displacement pump, power plant and oil extraction system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721689713.9U CN207539007U (en) 2017-12-07 2017-12-07 Positive displacement pump, power plant and oil extraction system

Publications (1)

Publication Number Publication Date
CN207539007U true CN207539007U (en) 2018-06-26

Family

ID=62617758

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721689713.9U Active CN207539007U (en) 2017-12-07 2017-12-07 Positive displacement pump, power plant and oil extraction system

Country Status (1)

Country Link
CN (1) CN207539007U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107917063A (en) * 2017-12-07 2018-04-17 海斯比得(武汉)石油科技有限公司 Power set and oil extraction system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107917063A (en) * 2017-12-07 2018-04-17 海斯比得(武汉)石油科技有限公司 Power set and oil extraction system
CN107917063B (en) * 2017-12-07 2023-10-13 海斯比得(武汉)石油科技有限公司 Power device and oil extraction system

Similar Documents

Publication Publication Date Title
AU772668B2 (en) Improved pump
CN102536807B (en) Raw oil lifting system and method for conveying fluid by utilizing sliding vane pump
CN101781979B (en) Hydraulic driving oil extraction equipment
CN207539007U (en) Positive displacement pump, power plant and oil extraction system
CN202768405U (en) All-metal screw rod type oil-well pump for deep well
CN107461320B (en) Positive displacement pump and extracting device of oil
CN107917063A (en) Power set and oil extraction system
CN107387379B (en) Plunger pump and extracting device of oil
CN1844669A (en) Down-hole linear motor and hydraulic cylinder driven capsule pump
CN207454228U (en) Positive displacement pump and extracting device of oil
CN202467779U (en) Crude oil lifting system
CN105332901A (en) Well electric hydraulic conversion high-lift plunger pump
CN212454380U (en) Oil pumping device of electric screw pump capable of separately pumping and mixing out oil submersible oil
CN204436767U (en) Hydraulic double-acting rodless pumping operation pump and system
CN103775318A (en) Hydraulic transmission rodless oil pumping system
CN203051015U (en) Large-displacement built-in automatic reverse hydraulic plunger pump
CN201705632U (en) Rodless hydraulic deep oil well pump
CN203847360U (en) Three-pipe type linear motor oil well pump
CN103939319A (en) Three-tube type linear motor oil well pump
CN201184288Y (en) Oil-submersible electric membrane pump
CN216111203U (en) Hydraulic power-assisted deep-pumping pilot production system device
CN203499650U (en) Magnetic suspension pump integration underground oil extraction device
CN205370932U (en) A electrical submersible pump energy -saving pump in pit for poor efficiency oil field
CN113944609B (en) Hydraulic power-assisted deep-pumping pilot production system device
CN202991474U (en) Submerged oil ball plug pump

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20210401

Address after: No. 1801, 18 / F, building 1, No. 69, Tianfu Third Street, Chengdu hi tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610094

Patentee after: Chengdu oweenbo Petroleum Technology Co.,Ltd.

Address before: 430070 Room 201, room 03, 1-2 / F, building B4, phase II construction project of financial backstage service center base, 77 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province

Patentee before: HAISI BIDE (WUHAN) PETROLEUM TECHNOLOGY Co.,Ltd.