CN203398971U - Stator of great-thrust cylindrical linear motor - Google Patents
Stator of great-thrust cylindrical linear motor Download PDFInfo
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- CN203398971U CN203398971U CN201320481956.9U CN201320481956U CN203398971U CN 203398971 U CN203398971 U CN 203398971U CN 201320481956 U CN201320481956 U CN 201320481956U CN 203398971 U CN203398971 U CN 203398971U
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- stator
- silicon steel
- winding
- steel sheet
- coaxially
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Abstract
The utility model relates to a stator of a great-thrust cylindrical linear motor. The stator of the great-thrust cylindrical linear motor includes a stator shell, a bottom block, and a rubber plug; the stator is coaxially fixed in the stator shell, and a rotor is coaxially arranged in a sliding manner in a stator cavity; the stator comprises a silicon steel sheet and a winding, and the silicon steel sheet and the winding are arranged at intervals and are fixed on the stator shell through the upper end ring and the lower end ring; the stator is formed by the winding and the silicon steel sheet which are fixedly arranged at intervals; the winding and the silicon steel sheet are arranged opposite to a permanent magnet and a magnetic ring of the rotor; three windings form a segment of an armature, three segments of the armature form a motor assembly, and a bearing seat is coaxially arranged between the silicon steel sheets of each motor assembly; two sides of the bearing seat is fixed with an insulating plate; and a linear bearing is coaxially sheathed inside the bearing seat. In the utility model, the stator is formed by the winding and the silicon steel sheet which are fixedly arranged at intervals and are opposite to the moving magnet structure of the rotor; three segments of the armature form the motor assembly; a steel strip is used for axial fixation between armatures of the stator, so that the gap between the silicon steel sheets is fixed and the stator yoke flux density is small; the heat generation is reduced; and the stability of the axial dimension of the motor is facilitated.
Description
Technical field
The utility model belongs to machine field, relates to linear electric motors, especially a kind of stator of high thrust cylindrical linear motor.
Technical background
Current most of oil field of ， China,, there is the phenomenon of high energy consumption, low output in 1/3 left and right of the energy consumption Yi Zhan oil field total energy consumption of oil production equipment, 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, and a kind of stator that designs the high thrust cylindrical linear motor ingenious, rational in infrastructure, tripping force is large, reliable is provided.
The technical scheme that the utility model is realized object is:
A kind of stator of high thrust cylindrical linear motor, comprise that stator case, bottom are blocked up, rubber top, it is stifled that stator case one end is coaxially fixedly mounted with bottom, blocks be coaxially fixedly mounted with rubber top in stator case Nei bottom, 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 and winding, silicon steel sheet and winding are spaced and are packed in stator case by top ring, lower loop, it is characterized in that: described stator is fixedly mounted with and is formed by winding and silicon steel sheet interval, 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, are coaxially installed with a bearing pedestal between the silicon steel sheet of each group of motors, and the both sides of this bearing pedestal are fixed with insulating pad; The coaxial inner sleeve of bearing pedestal has a linear bearing.
And all overcoat has an external insulation between each winding of described stator and stator case, each winding inner sleeve has an interior insulation, between adjacent winding, by insulating barrier, is fixedly mounted with silicon steel sheet.
Advantage of the present utility model and good effect are:
1, stator of the present utility model is fixedly mounted with and is formed by winding and silicon steel sheet interval, and corresponding with the moving-magnetic type structure of mover, three single-unit armatures form a group of motors, between every economize on electricity pivot of stator, adopt steel band to carry out axial restraint, gap between silicon steel sheet is fixed, stator yoke magnetic is close reduces, reduce heating, be conducive to the stable of motor axial dimension simultaneously.
2, stator of the present utility model accurate setting corresponding with mover, 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, the utility model inwall on the winding between adjacent silicon steel disc is provided with insulating barrier, can effectively keep seal isolation, axial location.
Accompanying drawing explanation
Fig. 1 is the structure sectional plan view of linear electric motors of the present utility model;
Fig. 2 is the structure cutaway view of the stator 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 stator of high thrust cylindrical linear motor, comprise that stator case 3, bottom are stifled 1, rubber top 2, it is stifled that stator case one end is coaxially fixedly mounted with bottom, blocks be coaxially fixedly mounted with rubber top in stator case Nei bottom, in stator case, be coaxially fixedly mounted with stator, at the bore of stator mover 7 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 9.
Innovative point of the present utility model is:
Stator is fixedly mounted with and is formed by winding and silicon steel sheet interval, referring to Fig. 2,3, 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 8, the both sides of this bearing pedestal are fixed with insulating pad 11; The coaxial inner sleeve of bearing pedestal has a linear bearing 14, and the inner peripheral surface of linear bearing is coated with the corresponding diamond of copper pipe or other hard coatings with mover.
Between each winding and stator case, all overcoat has an external insulation 12, and each winding inner sleeve has an interior insulation 13, between adjacent winding, by insulating barrier 10, is fixedly mounted with silicon steel sheet.
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 (2)
1. the stator of a high thrust cylindrical linear motor, comprise that stator case, bottom are blocked up, rubber top, it is stifled that stator case one end is coaxially fixedly mounted with bottom, blocks be coaxially fixedly mounted with rubber top in stator case Nei bottom, 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 and winding, silicon steel sheet and winding are spaced and are packed in stator case by top ring, lower loop, it is characterized in that: described stator is fixedly mounted with and is formed by winding and silicon steel sheet interval, 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, are coaxially installed with a bearing pedestal between the silicon steel sheet of each group of motors, and the both sides of this bearing pedestal are fixed with insulating pad; The coaxial inner sleeve of bearing pedestal has a linear bearing.
2. the stator of high thrust cylindrical linear motor according to claim 1, it is characterized in that: between each winding of described stator and stator case, all overcoat has an external insulation, each winding inner sleeve has an interior insulation, between adjacent winding, by insulating barrier, is fixedly mounted with silicon steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320481956.9U CN203398971U (en) | 2013-08-07 | 2013-08-07 | Stator of great-thrust cylindrical linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320481956.9U CN203398971U (en) | 2013-08-07 | 2013-08-07 | Stator of great-thrust cylindrical linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203398971U true CN203398971U (en) | 2014-01-15 |
Family
ID=49910469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320481956.9U Expired - Fee Related CN203398971U (en) | 2013-08-07 | 2013-08-07 | Stator of great-thrust cylindrical linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203398971U (en) |
-
2013
- 2013-08-07 CN CN201320481956.9U patent/CN203398971U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20170807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |