WO2015096086A1 - 潜油直线电机 - Google Patents
潜油直线电机 Download PDFInfo
- Publication number
- WO2015096086A1 WO2015096086A1 PCT/CN2013/090533 CN2013090533W WO2015096086A1 WO 2015096086 A1 WO2015096086 A1 WO 2015096086A1 CN 2013090533 W CN2013090533 W CN 2013090533W WO 2015096086 A1 WO2015096086 A1 WO 2015096086A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stator
- mover
- linear motor
- inner tube
- permanent magnets
- Prior art date
Links
- 230000005415 magnetization Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 10
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 8
- 239000010687 lubricating oil Substances 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical group [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 56
- 239000012530 fluid Substances 0.000 description 17
- 238000007789 sealing Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 239000013049 sediment Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001347 Stellite Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
Definitions
- the present invention relates to an electric machine, and more particularly to a high efficiency submersible linear motor.
- the traditional oil production equipment mainly uses the beam pumping unit (tank machine) for oil and oil collection.
- the steamed bread machine is a mechanical power device, which passes through the sucker rod of the kilometer or more and the plunger of the oil pump. Connected, it drives the pump plunger to reciprocate to pump underground oil to the ground.
- the main disadvantages are: high energy consumption, low pump efficiency, slanting of the sucker rod and the outflow pipe, and need to stop the adjustment and narrow the scope of adjustment.
- the linear motor driven submersible pumping unit directly converts electric energy into linear reciprocating mechanical energy, which not only simplifies the mechanical transmission process, but also effectively improves the efficiency.
- the pumping parameters can be adjusted steplessly, in order to realize automatic control and meet the oil recovery process. The requirements are provided and it is a new type of pumping unit with a promising future. However, the reliability of the linear motor of the conventional pumping unit has a lot of room for improvement.
- a submersible linear motor includes a stator and a mover that moves linearly within the stator.
- the stator includes a stator inner tube, a stator outer tube, and a plurality of coils disposed between the stator inner tube and the stator outer tube;
- the mover includes the mover inner tube, a plurality of permanent magnets, and more a magnetic conductive ring and a plurality of wear rings, the plurality of permanent magnets are sleeved on the inner tube of the mover, the plurality of magnetic conductive rings are sleeved on the inner tube of the mover, and each guide The magnetic ring is disposed between two adjacent permanent magnets, and the plurality of wear rings are sleeved on the inner tube of the mover, and a plurality of permanent magnets are disposed between each two wear rings, the plurality of The wear ring forms a friction pair with the inner tube of the stator.
- the coil is wound into a circular wire cake by a wire and potted by epoxy resin, and a silicon steel sheet assembly is disposed between adjacent coils, and the coil is insulated from the silicon steel sheet assembly.
- the stator further includes a cable connected to the coil, the stator being coupled to the control system of the ground by the cable.
- the stator further includes a motor upper joint and a motor lower joint at both ends of the stator outer tube, the motor upper joint, the motor lower joint, the stator inner tube and the stator outer Glue is injected between the tubes to cure the entire stator as a whole.
- the magnetization direction of each of the permanent magnets is an axial direction, and the magnetization directions of the adjacent two permanent magnets are opposite.
- the plurality of permanent magnets comprise an axially magnetized first magnet and a radially magnetized second magnet, the first magnet and the second magnet being along an axis of the mover inner tube Arranged alternately, the magnetization directions of the two adjacent first magnets are opposite, and the magnetization directions of the adjacent two second magnets are opposite.
- the mover further includes a plurality of mover outer tubes, each of the mover outer tubes is sleeved on the permanent magnet and the magnetically permeable ring, and is located between the two wear rings The outer diameter of the outer tube of the mover is smaller than the outer diameter of the wear ring.
- the mover further includes two lock nuts disposed at two ends of the outer tube of the mover for pressing the permanent magnet and the magnetic conductive ring.
- the inner tube of the mover is a hollow structure, and the mover and the stator are filled with lubricating oil, and the lubricating oil flows through the inside of the inner tube of the mover.
- the material of the permanent magnet is neodymium iron boron.
- the wear ring of the above-mentioned submersible linear motor and the inner tube of the stator are in contact with each other during the running of the motor, which can ensure smooth running of the motor without vibration, and the friction pair has high reliability and long service life.
- FIG. 1 is a cross-sectional view showing a submersible linear motor production system of an embodiment
- Figure 2a is a partial enlarged cross-sectional view of the submersible linear motor of Figure 1;
- Figure 2b is a partially enlarged cross-sectional view showing a submersible linear motor of another embodiment
- Figure 3a is a partial enlarged cross-sectional view showing a state of the oil pump of Figure 1;
- Figure 3b is a partial enlarged cross-sectional view showing another state of the oil pump of Figure 1;
- Figure 4 is a partial enlarged cross-sectional view of the sealer assembly of Figure 1.
- a submersible linear motor production system of an embodiment includes a submersible linear motor 100 , an oil pump 200 , a sealer assembly 300 , and a respirator 400 integrally mounted in the ground.
- the oil pump 200 is disposed above the submersible linear motor 100
- the respirator 400 is disposed below the submersible linear motor 100
- the sealer assembly 300 is located between the oil pump 200 and the submersible linear motor 100.
- the submersible linear motor 100 is a power source for the entire system, and includes a stator 10 and a mover 20 disposed in the stator 10 for linear motion.
- the stator 10 includes a stator inner tube 14, a stator outer tube 13, and a plurality of coils 11 disposed between the stator inner tube 14 and the stator outer tube 13.
- the stator outer tube 13 is made of a metal material with good magnetic permeability, and its rigidity is considered, the magnetic circuit saturation of the motor can be avoided, the deformation of the motor is improved, and the internal structure of the motor is protected.
- the stator inner tube 14 is made of a non-magnetic wear-resistant metal material, and as a contact portion with the mover 20, the surface is required to be smooth and wear-resistant, and can be specially treated for surface hardening such as nitriding, chrome plating, spray welding, etc. Harsh environment in different oil wells.
- the coil 11 is formed by connecting three-phase coils which are wound by wires into individual circular copper (or aluminum) wire cakes and potted with epoxy resin.
- the coils 11 are arranged in the axial direction of the stator inner tube 14, and a silicon steel sheet assembly 12 is disposed between adjacent coils 11.
- the silicon steel sheet assembly 12 is formed by laminating a piece of silicon steel sheet, and has the characteristics of good magnetic performance and low loss.
- the stator 10 also includes a cable 15 that is coupled to the coil 11.
- the cable 15 can be an oil field-specific armor flat cable, one end of which extends to a ground control system (not shown).
- the cable 15 has a packing squeeze seal on the outlet of the motor to withstand a high pressure environment of 30 MPa.
- the stator 10 also includes a motor upper joint 16 and a motor lower joint 17 at both ends of the stator outer tube 13.
- the submersible linear motor 100 is coupled to the sealer assembly 300 via a motor upper joint 16 and to the respirator 400 via a motor lower joint 17.
- the motor upper joint 16, the motor lower joint 17, the stator inner tube 14 and the stator outer tube 13 form a closed cavity, and the coil 11 and the silicon steel sheet assembly 12 are protected.
- the epoxy resin is injected into the sealed cavity, so that the glue fills the gap inside the stator well, and the whole stator 10 is solidified into one whole, which greatly improves the rigidity and reliability of the stator.
- the mover 20 includes a mover inner tube 21, a mover outer tube 22, a plurality of permanent magnets 23, a plurality of magnetic conductive rings 24, a plurality of wear rings 25, and two lock nuts 26.
- the mover inner tube 21 has a hollow tubular structure.
- the material of the permanent magnet 23 is preferably a neodymium iron boron material having high performance and high coercive force.
- the permanent magnet 23 has a substantially annular shape.
- a plurality of permanent magnets 23 are sleeved on the mover inner tube 21, and the magnetization direction of each of the permanent magnets 23 is an axial direction, and the magnetization directions of the adjacent two permanent magnets 23 are opposite.
- the magnetic flux ring 24 is also annular in shape and has the same diameter as the permanent magnet 23.
- a plurality of magnetic flux guiding rings 24 are sleeved on the inner rotor tube 21, and each of the magnetic conductive rings 24 is disposed between the adjacent two permanent magnets 23.
- the material of the magnetic flux ring 24 is a metal having good magnetic permeability.
- the wear ring 25 has a circular shape.
- a plurality of wear rings 25 are sleeved on the inner mover tube 21, and a plurality of permanent magnets 23 are disposed between each of the two wear rings 25.
- a wear ring 25 is provided every five permanent magnets 23.
- the outer diameter of the wear ring 25 is slightly larger than the magnetic flux ring 23 and thus can protrude from the surface of the magnetic flux ring 24 and the wear ring 25.
- the material of the wear ring 25 is a hard alloy, such as a Stellite cemented carbide, which has high hardness and good magnetic permeability.
- the wear ring 25 and the stator inner tube 14 are in contact with each other during motor operation, which can ensure smooth running of the motor and no vibration.
- the friction pair has high reliability and long service life.
- the outer tube 22 is sleeved outside the permanent magnet 23 and the magnetically permeable ring 24, and each of the outer tube 22 is located between the two wear rings 25.
- the outer diameter of the outer tube 22 is slightly smaller than the outer diameter of the wear ring 25 to ensure that it does not rub against the inner tube 14 of the stator.
- the outer outer tube 22 can be made of a metal that is not magnetically conductive.
- a lock nut 26 is attached to both ends of the outer tube 22 for pressing the permanent magnet 23 and the magnetic flux ring 24 to prevent loosening.
- the parameters are set by the numerical control device on the ground, and the power is supplied according to the specified program, so that the stator 10 generates a moving magnetic field.
- the stator magnetic field and the mover magnetic field generate an electromagnetic driving force, thereby driving the mover 20 to move up and down.
- the two ends of the motor are sealed and form a closed cavity with the mover 20 and the stator 10, and the cavity is filled with lubricating oil.
- the lubricating oil can quickly flow from the inside of the inner tube 21 of the mover, that is, from one end of the mover 20 to the other end to form a loop. Thereby reducing the resistance.
- the permanent magnet 23 includes an axially magnetized first magnet 23a and a radially magnetized second magnet 23b.
- the radial magnetization that is, the magnetizing magnetic field is radiated from the center of the circle
- the first magnet 23a and the second magnet 23b are alternately arranged along the axial direction of the mover 2, that is, the first magnet 23a is sequentially in the axial direction.
- the second magnet 23b, the first magnet 23a, the second magnet 23b, ... are alternately arranged, wherein the surfaces of the first magnet 23a and the second magnet 23b are subjected to anti-corrosion treatment, which can improve the number Corrosion resistance of a magnet 23a and a second magnet 23b.
- the magnetization directions of the adjacent first magnets 23a are opposite, and the magnetization directions of the adjacent second magnets 23b are opposite, that is, the two first magnets 23a disposed above and below the second magnet 23b, one of the first magnets 23a
- the magnetization direction is axially upward, and the magnetization direction of the other first magnet 23a is axially downward; the second magnets 23b disposed above and below the first magnet 23a, and the magnetization of one of the second magnets 23b
- the direction is radially outward, and the direction of magnetization of the other second magnet 23b is radially inward.
- the air gap magnetic field can be effectively increased, and the thrust of the cylindrical submersible linear motor can be increased.
- the oil pump 200 is a two-way plunger pump including a pump barrel 32, a plunger 34, a bridge tube 36, an oil inlet screen 38, and an oil outlet tube 39.
- the bridge tube 36 is sleeved outside the pump barrel 32 and forms a first return chamber 362 therebetween.
- the plunger 34 is movably disposed inside the pump barrel 32.
- the inner wall of the pump cylinder 32 and the outer wall of the plunger 34 need to be surface hardened, typically chrome plated.
- An oil inlet screen 38 is fixed to the lower end of the bridge tube 36 for filtering sediment in the well fluid.
- the pump barrel 32 includes an upper pump barrel 322 and a lower pump barrel 324 that is fixedly coupled to the upper pump barrel 322.
- the upper pump cylinder 322 has a larger diameter than the lower pump cylinder 324.
- a fixed valve 321 is provided at the top end of the upper pump cylinder 322. The well fluid can enter the first return chamber 362 through the fixed valve 321 .
- a lower return hole 323 is also defined in the lower end of the upper pump cylinder 322.
- the plunger 34 includes an upper plunger 342 and a lower plunger 344 that is fixedly coupled to the upper plunger 342.
- the upper plunger 342 is slidable up and down in the inner portion of the upper pump cylinder 322; the interior of the upper plunger 342 forms an oil suction chamber 341.
- An oil chamber 345 is formed between the top of the upper plunger 342 and the upper pump barrel 322.
- the top end of the upper plunger 342 is further provided with a swimming valve 346 through which the well fluid can enter the oil discharge chamber 345 through the stroke valve 346.
- the lower plunger 344 is slidable up and down in the inner portion of the lower pump barrel 324.
- the inside of the lower plunger 344 forms an oil suction chamber 343.
- a check valve 347 is also provided between the lower plunger 344 and the upper plunger 342.
- the well fluid can pass from the oil suction chamber 343 through the one-way valve 347 into the oil suction chamber 341.
- the diameter of the lower plunger 344 is smaller than that of the upper pump barrel 322, so that a second return chamber 364 is formed between the lower plunger 344 and the upper pump barrel 322.
- the first return chamber 362 is in communication with the second return chamber 364 through the return hole 323.
- a connector 348 is also provided at the end of the lower plunger 344.
- the plunger 34 is connected to the mover 20 of the submersible linear motor 100 via a connector 348.
- a plurality of oil inlet holes 349 are also formed in the connector 348.
- the well fluid can pass from the oil inlet screen 38 through the oil inlet 349 to the oil suction chamber 343.
- the upper portion of the bridge tube 36 is connected to the oil outlet pipe 39 through a joint 37.
- a smaller diameter grit tube 392 is also disposed in the oil outlet pipe 39, and an annular space 394 for grit is formed between the oil discharge pipe 39 and the grit pipe 392, which is more advantageous for wear protection of the pump and the motor.
- the above-described oil pump 200 discharges oil outward in both the upper stroke and the lower stroke of the plunger 34, so that the oil recovery efficiency can be improved and the oil output can be increased.
- the diameter of the lower pump cylinder 324 can be the same as that of the upper pump cylinder 322, and the return hole 323 can also be omitted.
- the sealer assembly 300 exists between the submersible linear motor 100 and the oil pump 200, and functions as a sealed motor, which simulates the well fluid and the sediment entering the motor from the upper part of the motor to ensure the reliability of the motor and prolong the life of the motor. .
- the sealer assembly 300 includes an outer barrel 40, a connecting rod 42, a seal assembly 44, and a scraper 46.
- the outer cylinder 40 is generally a cylindrical tube.
- the outer cylinder 40 is disposed between the submersible linear motor 100 and the oil pump 200.
- the lower end of the outer cylinder 40 is fixedly coupled to the motor upper joint 16 of the submersible linear motor 100 via a seal lower joint 402.
- the upper end of the outer cylinder 40 is fixedly coupled to the oil feed screen 38 of the oil pump 200 via a seal upper joint 404.
- a drain hole 41 is also formed in the outer cylinder 40.
- the inside of the seal upper joint 404 is further provided with a buffer block 47 for buffering the impact from the plunger 34 of the oil pump 200.
- the connecting rod 42 is a solid rod that is movably disposed inside the outer cylinder 40, and its surface can be hardened, such as chrome plating.
- the lower end of the connecting rod 42 is fixedly coupled to the mover 20 of the submersible linear motor 100, and the upper end of the connecting rod 42 is fixedly coupled to the plunger 34 of the oil pump 200, thereby transmitting the up and down movement of the mover 20 to the plunger 32.
- the seal assembly 44 is disposed between the connecting rod 42 and the inner wall of the outer cylinder 40.
- the function of the seal assembly 44 is to block impurities such as well fluids and sediment from entering the motor.
- the seal assembly 44 is a combination of seals such as U-rings and MV-type seals.
- the sealing ring is made of wear-resistant and corrosion-resistant material to ensure the life and sealing of the sealer.
- the upper and lower ends of the sealing assembly 44 are respectively provided with a lock nut 43 for fixing and pressing the sealing assembly 44.
- the upper and lower ends of the sealing assembly 44 are also respectively provided with a righting block 45 for correcting the connecting rod 42 to ensure that it is located at the center of the outer cylinder 40.
- a sand scraper 46 is disposed between the connecting rod 42 and the inner wall of the outer cylinder 40 and above the seal assembly 44.
- the upper end of the sand scraper 46 is made of a material having a certain elasticity, which can always be kept in contact with the connecting rod 42, thereby scraping off impurities such as sand adhered to the connecting rod 42 and from the outer cylinder 40.
- the drain hole 41 is discharged to the outside of the sealer assembly 300.
- the respirator 400 is disposed at the lower end of the submersible linear motor 100 for the purpose of balancing the internal and external pressure of the motor, and at the same time reducing the probability of impurities entering the motor, improving the sealing effect, and improving the reliability and life of the entire system.
- the inside of the respirator 400 is filled with the same lubricating oil as the inside of the motor, and communicates with the inside of the motor to balance the internal and external pressure of the motor, so that the sealing effect is better.
- the tail pipe of the respirator 400 is long and is screwed to the bottom of the capsule protector.
- the gravity of impurities such as sediment is used to make impurities such as sediment difficult to reach the bottom of the respirator, further reducing the probability of impurities entering the motor and improving the sealing effect. Improve the reliability and longevity of the entire system.
- the system cancels the sucker rod of the existing oil production system, avoids the stroke loss caused by the elongation of the sucker rod, and avoids the energy loss caused by the self-weight of the sucker rod and the eccentric wear of the rod, and improves the system.
- Efficiency especially for inclined wells and horizontal wells, provides a good solution.
- the pump of this system Since the pump of this system is installed above the submersible linear motor, it can ensure that the motor is always immersed in the well fluid, which is beneficial to the heat dissipation of the motor and also reduces the noise of the motor. At the same time, the motor running downhole can also avoid unintended workload and maintenance costs due to human damage.
- the existing well fluid of the system installed under the motor must pass through the inner hole of the mover, so the liquid output will be limited by the inner diameter of the mover; and the well fluid of the present scheme does not need to pass the inner hole of the mover. Therefore, the amount of liquid discharged is not limited.
- the upper end of the motor is provided with a sealer and the lower end is provided with a respirator. Therefore, the motor can be fully sealed to prevent the well fluid containing sand, gas, H2S, CO2, etc. from damaging the motor from entering the motor, so that the motor has high reliability. Long life, better adapt to the harsh environment of the underground.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Linear Motors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims (10)
- 一种潜油直线电机,包括定子和在所述定子内作直线运动的动子,其特征在于:所述定子包括定子内管、定子外管和设置在所述定子内管与所述定子外管之间的多个线圈;所述动子包含所述动子内管、多个永磁铁、多个导磁环及多个耐磨环,所述多个永磁铁套设在所述动子内管上,所述多个导磁环套设在所述动子内管上,且每个导磁环设置在相邻两个永磁铁之间,所述多个耐磨环套设在所述动子内管上,每两个耐磨环之间设有多个永磁铁,所述多个耐磨环与所述定子内管形成摩擦副。
- 根据权利要求1所述的潜油直线电机,其特征在于,所述线圈由导线缠绕成圆形的线饼,并通过环氧树脂灌封,相邻的线圈之间设有硅钢片组件,所述线圈与所述硅钢片组件绝缘。
- 根据权利要求1所述的潜油直线电机,其特征在于,所述定子还包括与所述线圈相连的线缆,所述定子通过所述线缆与地面的控制系统相连。
- 根据权利要求1所述的潜油直线电机,其特征在于,所述定子还包括位于所述定子外管两端的电机上接头与电机下接头,所述电机上接头、所述电机下接头、所述定子内管与所述定子外管之间注有胶水,使整个定子固化为一个整体。
- 根据权利要求1所述的潜油直线电机,其特征在于,每个永磁铁的充磁方向为轴向,且相邻两个永磁铁的充磁方向相反。
- 根据权利要求1所述的潜油直线电机,其特征在于,所述多个永磁铁包括轴向充磁的第一磁铁和径向充磁的第二磁铁,所述第一磁铁和第二磁铁沿所述动子内管的轴向交替布置,相邻的两个第一磁铁的充磁方向相反,相邻的两个第二磁铁的充磁方向相反。
- 根据权利要求1所述的潜油直线电机,其特征在于,所述动子还包含多个动子外管,每一个动子外管套设在所述永磁铁和所述导磁环上,且位于两个耐磨环之间,所述动子外管的外径小于所述耐磨环的外径。
- 根据权利要求7所述的潜油直线电机,其特征在于,所述动子还包括设于所述动子外管的两端的两个锁紧螺母,用以压紧所述永磁铁与所述导磁环。
- 根据权利要求1所述的潜油直线电机,其特征在于,所述动子内管为中空结构,所述动子与所述定子之间充满润滑油,所述润滑油从所述动子内管的内部流过。
- 根据权利要求1所述的潜油直线电机,其特征在于,所述永磁铁的材料为钕铁硼。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2911928A CA2911928A1 (en) | 2013-12-26 | 2013-12-26 | Oil-submersible linear motor |
US14/894,969 US20160105091A1 (en) | 2013-12-26 | 2013-12-26 | Oil-submersible linear motor |
RU2015151439A RU2015151439A (ru) | 2013-12-26 | 2013-12-26 | Нефтепогружной линейный двигатель |
CN201380081630.XA CN105850012A (zh) | 2013-12-26 | 2013-12-26 | 潜油直线电机 |
PCT/CN2013/090533 WO2015096086A1 (zh) | 2013-12-26 | 2013-12-26 | 潜油直线电机 |
Applications Claiming Priority (1)
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PCT/CN2013/090533 WO2015096086A1 (zh) | 2013-12-26 | 2013-12-26 | 潜油直线电机 |
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WO2015096086A1 true WO2015096086A1 (zh) | 2015-07-02 |
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PCT/CN2013/090533 WO2015096086A1 (zh) | 2013-12-26 | 2013-12-26 | 潜油直线电机 |
Country Status (5)
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US (1) | US20160105091A1 (zh) |
CN (1) | CN105850012A (zh) |
CA (1) | CA2911928A1 (zh) |
RU (1) | RU2015151439A (zh) |
WO (1) | WO2015096086A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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RU186213U1 (ru) * | 2018-03-20 | 2019-01-11 | Дмитрий Валерьевич Хачатуров | Линейный привод электропогружной насосной установки |
RU2677771C1 (ru) * | 2018-01-11 | 2019-01-21 | Дмитрий Валерьевич Хачатуров | Устройство и способ центрирования и уплотнения подвижной части линейной электропогружной насосной установки |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US10934819B2 (en) * | 2017-11-20 | 2021-03-02 | Dmytro KHACHATUROV | Linear electric submersible pump unit |
US11162489B2 (en) | 2018-12-18 | 2021-11-02 | Kix Huddleston | Electro-magnetic pump jack |
CN111769680B (zh) * | 2020-06-24 | 2023-09-26 | 陈天为 | 一种径向磁路潜水直线电动机 |
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- 2013-12-26 CA CA2911928A patent/CA2911928A1/en not_active Abandoned
- 2013-12-26 RU RU2015151439A patent/RU2015151439A/ru not_active Application Discontinuation
- 2013-12-26 US US14/894,969 patent/US20160105091A1/en not_active Abandoned
- 2013-12-26 WO PCT/CN2013/090533 patent/WO2015096086A1/zh active Application Filing
- 2013-12-26 CN CN201380081630.XA patent/CN105850012A/zh active Pending
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CN201312144Y (zh) * | 2008-11-13 | 2009-09-16 | 深圳市大族精密机电有限公司 | 潜油直线电机 |
CN201328033Y (zh) * | 2008-12-09 | 2009-10-14 | 深圳市大族精密机电有限公司 | 潜油直线电机 |
CN101969260A (zh) * | 2010-08-31 | 2011-02-09 | 深圳市大族激光科技股份有限公司 | 一种圆筒型潜油直线电机及潜油式直线抽油机 |
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RU186213U1 (ru) * | 2018-03-20 | 2019-01-11 | Дмитрий Валерьевич Хачатуров | Линейный привод электропогружной насосной установки |
Also Published As
Publication number | Publication date |
---|---|
US20160105091A1 (en) | 2016-04-14 |
CN105850012A (zh) | 2016-08-10 |
CA2911928A1 (en) | 2015-07-02 |
RU2015151439A (ru) | 2017-06-06 |
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