CN203482071U - A rotor of a large-thrust cylindrical linear motor - Google Patents
A rotor of a large-thrust cylindrical linear motor Download PDFInfo
- Publication number
- CN203482071U CN203482071U CN201320481929.1U CN201320481929U CN203482071U CN 203482071 U CN203482071 U CN 203482071U CN 201320481929 U CN201320481929 U CN 201320481929U CN 203482071 U CN203482071 U CN 203482071U
- Authority
- CN
- China
- Prior art keywords
- mover
- magnetic
- rotor
- linear motor
- axle
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Linear Motors (AREA)
Abstract
The utility model relates to a rotor of a large-thrust cylindrical linear motor. The rotor comprises a rotor shaft, permanent magnets, and magnet-conducting rings. The permanent magnets and the magnet-conducting rings are uniformly arranged on the rotor shaft in a staggered manner. The rotor shaft is produced by hollow soft magnetic material. A copper pipe is sleeved on the rotor coaxially. The rotor shaft is produced by hollow soft magnetic material. The copper pipe is sleeved on the permanent magnets of the rotor coaxially. Therefore, large thrust is achieved in unit volume and starting force is increased. The maximum stroke of a linear electromagnetic oil-pumping machine is adjusted by using a method to change the relative length of the stator and the rotor of the linear motor, complying with a development trend of long stroke and low stroke frequency of oil-pumping machines.
Description
Technical field
The utility model belongs to machine field, relates to linear electric motors, especially a kind of mover of high thrust cylindrical linear motor.
Technical background
Current most of oil field of ， China, the energy consumption of oil production equipment has accounted for 1/3 left and right of oil field total energy consumption, has occurred the phenomenon of high energy consumption, low output, and electric cost expenditure is surprising.Reason is that oil-field oil pumper load is the time varying load of unique feature, has dividing of sound load characteristic.The startup initial condition of oil pumper operation comprises the energy storage that stiction, the balance of each contact-making surface that oil-extractor polish-rod motion overcomes is fast etc., this staring torque that requires dragging motor is 3-4 times of oil pumper actual loading moment, even larger, and staring torque is the important evidence of oil pumper apolegamy motor.
Oil field mainly contains two with the power-economizing method of motor at present: the one, by the improvement that changes power supply or carry out in structural design, change the outer mechanical property of motor for oil field, thereby changing motor coordinates with the system of oil pumper, improve system effectiveness, reach energy-conservation object; The 2nd, by improving the load factor of motor, power factor improves the efficiency of motor itself realizes energy-conservation.In addition, by oil pumper being installed additional to freewheel clutch, realizing energy-conservation for methods such as beam pumping unit configuration springs.Mainly adopt at present high slip (or super high revolution difference) motor, silicon-controlled voltage regulation, frequency-conversion and speed-regulation motor, permagnetic synchronous motor, large starting moment multiple-speed motor etc.In addition, also done a large amount of research work adopting wire-wound asynchronous motor, Y/ Δ switching motor, power saving energy accumulator etc. to realize aspect energy-conservation.
Measured result shows, when economizing on electricity only in underloading 30% following load, China's ultrahigh-slip motor has power savings, because the economize on electricity of ultrahigh-slip motor, first object must be that the well that oscillating load is larger is (at U.S.'s ultrahigh-slip motor power saving rate 20%, because the oscillating load inertial load of its oil well is all larger), secondly, the revolutional slip of motor is wanted appropriateness, can not be too high.And the increasingly large stroke of the development of oil production technology in recent years, low jig frequency, this technique itself just reduces inertial load and oscillating load to greatest extent.The jig frequency of oil well drops to 4-6 time now, and the range of application of ultrahigh-slip motor greatly reduces.Silicon-controlled voltage regulation has reduced iron loss and reactive current loss, but the high order harmonic component producing therefrom is not only brought pollution to electrical network, and has reduced the useful life of motor.
The conventional mechanical oil production system of China has insert pump system, Electric Submersible Pump System, hydraulic pump system, screw pump system and gaslift system, and most widely used be insert pump system.More than 80% be all rod pumping pumping system in the world, and in the majority with beam type, because of it, take simple in structure, easy to manufacture, cheap is advantage.But beam pumping unit is because drive disk assembly is many, mechanical loss has reduced greatly system effectiveness.
Above-mentioned effort is all the improvement of implementing on the basis of original beam pumping unit.Thereby these methods can not be broken away from its intrinsic shortcoming.These losses are all that the rotation by motor becomes to pump and causes.And the orthoscopic motor of develop rapidly in recent years overcomes the important motivity equipment of this shortcoming just, this is a kind of straight-line motor that directly converts electric energy to, middle without switching mechanism.
The general structure of existing linear electromagnetic pumping unit is comprised of several parts such as frame, crossbeam, weight equalizer, roller, steel wire rope, high thrust linear electric motors and driving control systems thereof, in this system, still utilize the lifting of weight equalizer to change potential energy and realize balance minute being equipped with of internal system, thereby the amplitude of variation of the thrust amplitude of linear electric motors in upper and lower stroke is reduced, namely by the energy of selecting suitable balance weight that sucker rod deadweight lifting is consumed, reduce to minimum value, so just improved stability and the efficiency of system.In addition, for the beam pumping units that use in a large number in the world at present, also can on original basis, transform, adopt linear electric motors to drive, and retain the mechanisms such as original spin balancing mode and walking beam, horse head.The electromagnetic pumping unit that electricity consumption magnetic linear drives rod string to pump, does not need electric rotating machine, decelerator and quadric chain etc.This electromagnetic pumping unit has the good characteristics such as structure is simpler, efficiency is higher, cost is lower, and it is still in aboveground installation.
In addition, rare earth permanent-magnet rectilinear synchronous motor starting is difficulty comparatively, will be placed in down-hole at work, and its operational environment is comparatively severe, and its sealing and explosion-proof etc. needs to solve; In addition, about 100 ℃ of the operating ambient temperature of down-hole, so the motor of design must meet such operational environment, to guarantee the reliability service of system; Space, down-hole is very limited, and in design, the size of motor itself is little, effectively improves the power density of motor unit volume, thereby will make it for underground work, become possibility.
By retrieval, not yet find identical or close with the utility model application patent document.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of and designs that ingenious, rational in infrastructure, tripping force is large, the mover of good airproof performance, reliable high thrust cylindrical linear motor.
The technical scheme that the utility model is realized object is:
A kind of mover of high thrust cylindrical linear motor, described mover comprises mover axle, permanent magnet and magnetic guiding loop, permanent magnet and magnetic guiding loop are uniform to be spaced on mover axle, it is characterized in that: described mover axle adopts the soft magnetic material of hollow to make, and the outer coaxial sleeve of mover has a copper pipe.
And, the permanent magnet that on described mover axle, uniform interval is fixedly mounted with and magnetic guiding loop adopt fractional-slot moving-magnetic type structure, three magnetic guiding loops are a magnetic conduction group, every three groups of magnetic guiding loops form a magnetic conduction joint, between magnetic guiding loop between each magnetic conduction joint on mover axle the non-magnetic transition rings of coaxial package one, between each non-magnetic transition rings and adjacent magnetic guiding loop, adjustment ring is installed as required, seven magnetic conductions joints are the magnetic conduction part of whole movers in series mutually.
And, at the rear portion of mover axle, be shaped with a fuel feed hole so that mover and and stator between form cooling oil path.
And the outer fringe surface of described copper pipe is coated with diamond or other hard coatings.
Advantage of the present utility model and good effect are:
1, the moving-magnetic type structure that the motor that the utility model forms adopts fractional-slot structure (9 groove 10 utmost points) to coordinate with stator slot, between magnetic guiding loop and permanent magnet, install at interval, it is linear that the demagnetization curve of rare-earth permanent magnet is, need not stablize processing, anti-degaussing ability is strong, is suitable for working having under the dynamic condition of stronger degaussing.
2, the utility model accurate setting corresponding with stator, take group of motors as a node, and corresponding with the permanent magnet of mover, as there being in the axial direction deviation, by the adjustment ring of mover, is compensated.
3, mover axle of the present utility model adopts the soft magnetic material of hollow to make, and the outer coaxial sleeve of rotor permanent magnet has copper pipe, and exerting oneself of unit volume is larger, has also improved tripping force simultaneously; The maximum stroke of adjusting linear electromagnetic pumping unit by changing the method for linear motor stator electric and mover relative length, meets oil pumper to the trend of long stroke, low jig frequency future development.
4, between the utility model and stator, form cool cycles oil circuit, be conducive to reduce the frictional force between moving stator, be conducive to disperse the heat that motor produces; Anti-wear performance and the life-span of mover, with special hard technological coating, can effectively be improved in mover surface; Linear electric motors are without special-purpose excitation winding, simple in structure, saved copper consumption, reduced energy consumption, improved efficiency and reliability.
Accompanying drawing explanation
Fig. 1 is the structure sectional plan view of the utility model linear electric motors;
Fig. 2 is the structure cutaway view of the mover of Fig. 1;
Fig. 3 is the A portion structure enlarged diagram of Fig. 2.
Specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail by specific embodiment.It should be noted that, the present embodiment is descriptive, is not determinate, can not limit protection range of the present utility model with this.
A kind of mover of high thrust cylindrical linear motor, related linear electric motors comprise that stator case 3, bottom are stifled 1, rubber top 2, stator and mover, in stator case one end, be coaxially fixedly mounted with bottom stifled, bottom in stator case blocks and is coaxially fixedly mounted with rubber top, in stator case, be coaxially fixedly mounted with stator, at the bore of stator mover that is coaxially slidably installed.Described stator comprises silicon steel sheet 6 and winding 5, and silicon steel sheet and winding are spaced and are packed in stator case by top ring 4, lower loop 10; Described mover comprises mover axle 8, permanent magnet 12 and magnetic guiding loop 13, and permanent magnet and magnetic guiding loop are uniform to be spaced on mover axle.
Innovative point of the present utility model is:
Described mover axle adopts the soft magnetic material of hollow to make, and sees Fig. 2,3, and the outer coaxial sleeve of mover has a copper pipe 7, and the outer fringe surface of this copper pipe is coated with diamond or other hard coatings.
At the rear portion of mover axle, be shaped with a fuel feed hole 11 so that mover and and stator between form cooling oil path, see the arrow indication in Fig. 1.
The permanent magnet that on mover axle, uniform interval is fixedly mounted with and magnetic guiding loop adopt fractional-slot moving-magnetic type structure, three magnetic guiding loops are a magnetic conduction group, every three groups of magnetic guiding loops form a magnetic conduction joint, between magnetic guiding loop between each magnetic conduction joint on mover axle the non-magnetic transition rings 15 of coaxial package one, between each non-magnetic transition rings and adjacent magnetic guiding loop, adjustment ring 14 is installed as required, so that magnetic conduction joint is corresponding with the armature joint of stator, the mode of magnetizing adopts axial charging and radial magnetizing all can.
The magnetic conduction part of seven mutual whole movers in series of magnetic conduction joint.
The stator of the linear electric motors that the utility model is related is fixedly mounted with and is formed by winding and silicon steel sheet interval, referring to Fig. 1, permanent magnet and the corresponding setting of magnetic guiding loop of winding and silicon steel sheet and mover, three windings form an economize on electricity pivot, three single-unit armatures form a group of motors, adopt steel band (there is no label in figure) to carry out axial restraint between every economize on electricity pivot of stator.
Between the silicon steel sheet of each group of motors, be coaxially installed with a bearing pedestal 9, the inner peripheral surface of linear bearing is coated with the corresponding diamond of copper pipe or other hard coatings with mover.
Seven group of motors are composed in series 42 windings mutually, form thus the armature portion of whole linear electric motors.
By the designed linear electric motors of the utility model, can perfection realize rectilinear motion.
Result of the test shows, linear electric motors under 1100V voltage, stroke 1.3m, thrust is about 2t.By simple PLC, control and realize 6～10 strokes per minute.
The feasibility odds ratio of the utility model and existing product is:
Claims (3)
1. the mover of a high thrust cylindrical linear motor, described mover comprises mover axle, permanent magnet and magnetic guiding loop, permanent magnet and magnetic guiding loop are uniform to be spaced on mover axle, it is characterized in that: described mover axle adopts the soft magnetic material of hollow to make, and the outer coaxial sleeve of mover has a copper pipe;
The permanent magnet that on described mover axle, uniform interval is fixedly mounted with and magnetic guiding loop adopt fractional-slot moving-magnetic type structure, three magnetic guiding loops are a magnetic conduction group, every three groups of magnetic guiding loops form a magnetic conduction joint, between magnetic guiding loop between each magnetic conduction joint on mover axle the non-magnetic transition rings of coaxial package one, between each non-magnetic transition rings and adjacent magnetic guiding loop, adjustment ring is installed as required, seven magnetic conductions joints are the magnetic conduction part of whole movers in series mutually.
2. the mover of high thrust cylindrical linear motor according to claim 1, is characterized in that: at the rear portion of mover axle, be shaped with a fuel feed hole so that mover and and stator between form cooling oil path.
3. the mover of high thrust cylindrical linear motor according to claim 1, is characterized in that: the outer fringe surface of described copper pipe is coated with diamond or other hard coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320481929.1U CN203482071U (en) | 2013-08-07 | 2013-08-07 | A rotor of a large-thrust cylindrical linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320481929.1U CN203482071U (en) | 2013-08-07 | 2013-08-07 | A rotor of a large-thrust cylindrical linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203482071U true CN203482071U (en) | 2014-03-12 |
Family
ID=50230319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320481929.1U Expired - Fee Related CN203482071U (en) | 2013-08-07 | 2013-08-07 | A rotor of a large-thrust cylindrical linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203482071U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135135A (en) * | 2014-07-25 | 2014-11-05 | 曲阜师范大学 | High-efficiency large-thrust cylindrical permanent-magnet linear motor for oil pumping unit |
| CN117674464A (en) * | 2023-08-30 | 2024-03-08 | 比亚迪股份有限公司 | Motor and vehicle |
-
2013
- 2013-08-07 CN CN201320481929.1U patent/CN203482071U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135135A (en) * | 2014-07-25 | 2014-11-05 | 曲阜师范大学 | High-efficiency large-thrust cylindrical permanent-magnet linear motor for oil pumping unit |
| CN117674464A (en) * | 2023-08-30 | 2024-03-08 | 比亚迪股份有限公司 | Motor and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103427587B (en) | A kind of High-thrust tubular linear motor | |
| CN202197206U (en) | Novel conical inner rotor asynchronous permanent magnet coupling speed regulator of oblique magnetic field | |
| CN204741386U (en) | Birotor axial magnetic circuit machinery becomes magnetic flow permanent -magnet type synchronous machine | |
| CN113131706B (en) | Disc type permanent magnet synchronous motor, energy storage flywheel and method | |
| CN102638202A (en) | Electromagnetic motion energy generating device and method | |
| CN102412640B (en) | Offshore type superconducting wind power generator | |
| CN203289295U (en) | Low-speed large-torque submersible permanent-magnetic synchronous motor | |
| CN203482071U (en) | A rotor of a large-thrust cylindrical linear motor | |
| CN105846580A (en) | Surface-mounted permanent magnet motor structure | |
| CN202183652U (en) | Low wind resistance magnetic flux switching motor | |
| CN103269142A (en) | High-speed permanent magnet motor for molecular pump | |
| CN203537207U (en) | Permanent magnet and magnetic conductive ring structure of high thrust cylindrical linear motor rotator | |
| CN202334249U (en) | Novel radial magnetic field induction-type asynchronous permanent-magnet coupler | |
| CN203398972U (en) | Great-thrust cylindrical linear motor | |
| CN202565044U (en) | Stator permanent magnet bearingless motor | |
| CN103023258A (en) | Rare-earth permanent-magnet synchronous servo motor | |
| CN203368220U (en) | Oil pumping machine torque motor and motor generator | |
| CN203481960U (en) | An insulating structure of a large-thrust cylindrical linear motor stator | |
| CN203398971U (en) | Stator of great-thrust cylindrical linear motor | |
| CN201742272U (en) | Low-speed permanent magnetic motor with applicable voltage of 1140V | |
| CN201041975Y (en) | Low-speed and ultra-high efficient lanthanon permanent magnetic synchronous electromotor | |
| CN202260938U (en) | Low speed large torque alternating-current permanent magnet synchronous motor | |
| CN202334039U (en) | Offshore type superconductive wind driven generator | |
| CN207603382U (en) | Air-Cooling Island low-speed big drive assembly | |
| CN201378785Y (en) | Wind generator with high torque density |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20170807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |