CN108110916A - A kind of new pumping unit is designed with disc-type permanent magnet motor - Google Patents
A kind of new pumping unit is designed with disc-type permanent magnet motor Download PDFInfo
- Publication number
- CN108110916A CN108110916A CN201611053893.1A CN201611053893A CN108110916A CN 108110916 A CN108110916 A CN 108110916A CN 201611053893 A CN201611053893 A CN 201611053893A CN 108110916 A CN108110916 A CN 108110916A
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- China
- Prior art keywords
- motor
- permanent magnet
- disc
- pumping unit
- type permanent
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
Abstract
The present invention discloses a kind of new pumping unit disc-type permanent magnet motor design method, this method is for the efficiency and simplied system structure for improving traditional beam pumping unit, the three-phase induction motor and reducing gear that original system is directly substituted with disc-type permanent magnet motor are proposed, new system directly drives connecting rod using back-to-back double plate magneto.The characteristics of considering disc-type permanent magnet motor Distribution of Magnetic Field, the motor a pair is analyzed using dimensional finite element method and extremely descends magnetic flux density in air gap, calculate no-load electromotive force, torque and axial suction, wherein motor torque and no-load electromotive force match with prototype experiment value, it was demonstrated that the result of three-dimensional finite element analysis is more accurate than traditional design method.The new pumping unit of disc-type permanent magnet motor driving is simple in structure, efficient, and big torque can be provided in low speed, is conducive to the starting of pumping unit.This research has certain reference value to the design of beam pumping unit.
Description
Technical field
The invention belongs to design of electrical motor field more particularly to a kind of new pumping unit disc-type permanent magnet motor design methods.
Background technology
Beam pumping unit has adaptability simple in structure, easy to use, live good and high reliability, is recovering the oil
90 more than % are accounted in production equipment.Its drive system generally use three phase induction motor, again by quadric chain after deceleration
Be converted to straight reciprocating motion.The efficiency of motor in the ideal case is 90% or so, and power factor is less than 0.4 mostly, power train
System energy loss is sometime up to 28%, therefore system effectiveness is usually no more than 30%, and waste of energy phenomenon is very serious, this is also oil field
Present in universal phenomenon.For energy saving, raising system efficiency, it is necessary to improve the efficiency of motor, reducing gear with turning
The efficiency of converting mechanism and its performance of governor.
At present, a kind of trend is to substitute original three-phase induction motor using magneto, improves electric efficiency；It is another
Trend is to remove intermediate deceleration and switching mechanism, using the linear motor directly driven.The existing straight line of form used at present
Induction machine also has permanent magnet linear motor.It is more although with the raising of linear induction motor system efficiency, but Pumping Unit needs to make
Larger modification.The advantages of with reference to first two trend each, is proposed using disc-type permanent magnet motor (also referred to as axial magnetic field permanent magnet electricity
Machine) directly substitute original system three-phase induction motor and reducing gear.Having not yet seen disc-type permanent magnet motor both at home and abroad at present should
For the document report of pumping unit, therefore the disc-type permanent magnet motor studied under the conditions of the new opplication is important, it may have real
Border meaning.
The content of the invention
The present invention addresses the above problem, provides a kind of new pumping unit disc-type permanent magnet motor design method, should
Method is for the efficiency and simplied system structure for improving traditional beam pumping unit, it is proposed that is directly replaced with disc-type permanent magnet motor
For the three-phase induction motor and reducing gear of original system, new system directly drives connecting rod using back-to-back double plate magneto.
The characteristics of considering disc-type permanent magnet motor Distribution of Magnetic Field, analyzes the motor a pair using dimensional finite element method and extremely descends in air gap
Magnetic flux density calculates no-load electromotive force, torque and axial suction, wherein motor torque and no-load electromotive force and prototype experiment value
It matches, it was demonstrated that the result of three-dimensional finite element analysis is than traditional design method more accurate.Disc-type permanent magnet motor drives new
Pumping Unit is simple, efficient, and big torque can be provided in low speed, is conducive to the starting of pumping unit.
The technical solution adopted by the present invention is a kind of new pumping unit disc-type permanent magnet motor design method, including motor
System structure, motor characteristic analysis and experiment result.
The electric system structure, two disc-type permanent magnet motors are instead of the three-phase induction electricity in traditional structure in new construction
Machine and reducing gear are directly driven connecting rod to drive sucker rod by motor.The motor has the characteristics that magneto, can be in low speed
When export big torque, meet the requirement of pumping unit low-speed motion.Rotor and stator on main shaft are disc-shape, disk
Face is parallel, and the two has certain air gap between being correspondingly arranged, and stator is fixed on engine base, and rotor is installed on main shaft and rotates body, with
The circumferentially distributed permanent magnetic steel of rotor disk face is corresponding, and stator tooth socket is located at disk and main shaft is perpendicular.Linkage is mounted on
On the outer diameter of rotor.Stator includes stator core and armature winding, and stator slot shape is semi-closed port peariform slot, and groove width is inside and outside stator
It is equal at footpath, and tooth is small in the wide inner radius of outer radius, stator winding is embedded in along the circumferentially distributed tooth socket of stator armature disk.Turn
Attached bag includes rotor core and permanent magnet.In order to weaken slot effect as far as possible, one stator slot of the oblique mistake of permanent magnet away from.Work as desk permanent-magnet
When the stator coil of motor passes to the alternating current of certain frequency, a rotating excitation field is generated in motor gas-gap, with synchronous rotor
Excitation field interacts, and generates electromagnetic torque, drives walking beam by connecting rod, sucker rod can be driven to move up and down.New system
Eliminate inefficient reducing gear, facilitate and substitute original three-phase induction motor, eliminate the loss of mechanical reduction gear with
Limitation.Although there is still a need for linkage, control system can regulation motor in real time output power, improve motor sheet
The operational efficiency of body improves the speed of oil pumping, and pumping unit is made to keep good power match with motor, can improve efficiency, saves
About electricity consumption.
The motor characteristic analysis, in traditional design process, the magnetic leakage factor that magnetic circuit calculating is used is according to warp
It tests value to set, the torque being calculated has certain error.To obtain more accurately result of calculation, and motor is understood in detail
Distribution of Magnetic Field in air gap is, it is necessary to using finite element method.It, not only can be in the hope of motor each several part flux density by finite element method
Distribution, torque, the no-load electromotive force in stator winding can also be obtained.Original designing scheme is made on this basis further
Modification can obtain the designing scheme of an optimization.
The experiment result, effect are model prototypes under dedicated control system driving, realize low-speed stable
Operation, disc-type permanent magnet motor directly drives connecting rod, and connecting rod drives horse head, is moved up and down by crossbeam counterweight, in reality
Sucker rod is mounted on the horse head of motor one side in pumping unit system, is also moved up and down, and realizes oil pumping function, and system is continuously transported
Dynamic, speed is steady, and dynamic property is preferable.Experiment shows that system is reliable, noiseless, fever is few, since novel system eliminates original
Mechanical reduction gear in system, efficiency are higher.
The beneficial effects of the invention are as follows：The new pumping unit disc-type permanent magnet motor design method of the present invention, for raising
The efficiency and simplied system structure of traditional beam pumping unit, it is proposed that the three-phase of original system is directly substituted with disc-type permanent magnet motor
Induction machine and reducing gear, new system directly drive connecting rod using back-to-back double plate magneto.Consider desk permanent-magnet electricity
The characteristics of machine Distribution of Magnetic Field, analyzes the motor a pair using dimensional finite element method and extremely descends magnetic flux density in air gap, calculates
No-load electromotive force, torque and axial suction, wherein motor torque and no-load electromotive force match with prototype experiment value, it was demonstrated that
The result of three-dimensional finite element analysis is more accurate than traditional design method.The new pumping unit structure letter of disc-type permanent magnet motor driving
It is single, it is efficient, and big torque can be provided in low speed, be conducive to the starting of pumping unit, while cost-effective, this research pair
The design of beam pumping unit has certain reference value.
Description of the drawings
The present invention will be further described with reference to the accompanying drawings and detailed description.The scope of the present invention not only limits to
In the statement of herein below.
Fig. 1 is structural model figure of the present invention.
In figure：The support steel disk 5- of the support steel disk 4'- permanent magnets of 1- input shaft 2- output shaft 3- axle sleeve 4- copper dish
The support steel loop 6- copper dish 7- copper ring 8- the air gaps 9- aluminium ring 10- aluminium of the support steel loop 5'- arc-shaped permanent magnets of copper ring
Disk 11- permanent magnet 12- arc-shaped permanent magnet 13- pin 14- inner cylinder 15- axis pin 16- shaft part 17- thrust slide bearings 18-
Arc-shaped rack 19- gear 20- gear-bearing 21- swing rods.
Specific embodiment
As shown in the figure, a kind of new pumping unit disc-type permanent magnet motor design method of the present invention, including electric system knot
Structure, motor characteristic analysis and experiment result.
The electric system structure, two disc-type permanent magnet motors are instead of the three-phase induction electricity in traditional structure in new construction
Machine and reducing gear are directly driven connecting rod to drive sucker rod by motor.The motor has the characteristics that magneto, can be in low speed
When export big torque, meet the requirement of pumping unit low-speed motion.Rotor and stator on main shaft are disc-shape, disk
Face is parallel, and the two has certain air gap between being correspondingly arranged, and stator is fixed on engine base, and rotor is installed on main shaft and rotates body, with
The circumferentially distributed permanent magnetic steel of rotor disk face is corresponding, and stator tooth socket is located at disk and main shaft is perpendicular.Linkage is mounted on
On the outer diameter of rotor.Stator includes stator core and armature winding, and stator slot shape is semi-closed port peariform slot, and groove width is inside and outside stator
It is equal at footpath, and tooth is small in the wide inner radius of outer radius, stator winding is embedded in along the circumferentially distributed tooth socket of stator armature disk.Turn
Attached bag includes rotor core and permanent magnet.In order to weaken slot effect as far as possible, one stator slot of the oblique mistake of permanent magnet away from.Work as desk permanent-magnet
When the stator coil of motor passes to the alternating current of certain frequency, a rotating excitation field is generated in motor gas-gap, with synchronous rotor
Excitation field interacts, and generates electromagnetic torque, drives walking beam by connecting rod, sucker rod can be driven to move up and down.New system
Eliminate inefficient reducing gear, facilitate and substitute original three-phase induction motor, eliminate the loss of mechanical reduction gear with
Limitation.Although there is still a need for linkage, control system can regulation motor in real time output power, improve motor sheet
The operational efficiency of body improves the speed of oil pumping, and pumping unit is made to keep good power match with motor, can improve efficiency, saves
About electricity consumption.
The motor characteristic analysis, in traditional design process, the magnetic leakage factor that magnetic circuit calculating is used is according to warp
It tests value to set, the torque being calculated has certain error.To obtain more accurately result of calculation, and motor is understood in detail
Distribution of Magnetic Field in air gap is, it is necessary to using finite element method.It, not only can be in the hope of motor each several part flux density by finite element method
Distribution, torque, the no-load electromotive force in stator winding can also be obtained.Original designing scheme is made on this basis further
Modification can obtain the designing scheme of an optimization.
The experiment result, effect are model prototypes under dedicated control system driving, realize low-speed stable
Operation, disc-type permanent magnet motor directly drives connecting rod, and connecting rod drives horse head, is moved up and down by crossbeam counterweight, in reality
Sucker rod is mounted on the horse head of motor one side in pumping unit system, is also moved up and down, and realizes oil pumping function, and system is continuously transported
Dynamic, speed is steady, and dynamic property is preferable.Experiment shows that system is reliable, noiseless, fever is few, since novel system eliminates original
Mechanical reduction gear in system, efficiency are higher.
Above with respect to the present invention specific descriptions, without limitation, it will be understood by those of ordinary skill in the art that, still
It can modify to the present invention or equivalent substitution, to reach identical technique effect；As long as meet using needs, all in this hair
Within bright protection domain.
Claims (4)
1. a kind of new pumping unit is designed with disc-type permanent magnet motor, it is characterised in that：This method is for the traditional beam type of raising
The efficiency of pumping unit and simplied system structure, it is proposed that directly substituted with disc-type permanent magnet motor original system three-phase induction motor and
Reducing gear, new system directly drive connecting rod using back-to-back double plate magneto, consider disc-type permanent magnet motor Distribution of Magnetic Field
The characteristics of, which is analyzed using dimensional finite element method and extremely descends magnetic flux density in air gap, calculates unloaded Electro dynamic
Gesture, torque and axial suction, wherein motor torque and no-load electromotive force match with prototype experiment value, disc-type permanent magnet motor driving
New pumping unit it is simple in structure, it is efficient, and big torque can be provided in low speed, be conducive to the starting of pumping unit.
2. new pumping unit according to claim 1 is designed with disc-type permanent magnet motor, which is characterized in that the department of electrical engineering
It unites structure, two disc-type permanent magnet motors are instead of the three-phase induction motor and reducing gear in traditional structure in new construction, by electricity
Machine directly drives connecting rod to drive sucker rod, which has the characteristics that magneto, big torque can be exported in low speed, meets
The requirement of pumping unit low-speed motion, when the stator coil of disc-type permanent magnet motor passes to the alternating current of certain frequency, in motor gas
A rotating excitation field is generated in gap, is interacted with synchronous rotor excitation field, generates electromagnetic torque, is driven and swum by connecting rod
Beam can drive sucker rod to move up and down, and new system eliminates inefficient reducing gear, facilitate and substitute original three-phase induction
Motor eliminates the loss and limitation of mechanical reduction gear, although there is still a need for linkage, control system can be real-time
The output power of regulation motor improves the operational efficiency of motor in itself, improves the speed of oil pumping, pumping unit is made to be protected with motor
Good power match is held, efficiency, using electricity wisely can be improved.
3. new pumping unit according to claim 1 is designed with disc-type permanent magnet motor, which is characterized in that the motor
Specificity analysis, in traditional design process, the magnetic leakage factor that magnetic circuit calculating is used is set based on experience value, is calculated
To torque have certain error, to obtain more accurately result of calculation, and understand the Distribution of Magnetic Field in motor gas-gap in detail, can
Distribution, torque in the hope of motor each several part flux density can also obtain the no-load electromotive force in stator winding, right on this basis
Original designing scheme makees further modification, can obtain the designing scheme of an optimization.
4. new pumping unit according to claim 1 is designed with disc-type permanent magnet motor, which is characterized in that the model machine
Experimental result, effect are model prototypes under dedicated control system driving, realize the operation of low-speed stable, disc-type permanent magnet motor
Connecting rod is directly driven, connecting rod drives horse head, moves up and down by crossbeam counterweight, and sucker rod is pacified in actual pumping unit system
On the horse head of motor one side, also move up and down, realize oil pumping function, system continuously moves, and speed is steady, dynamic property compared with
Good, system is reliable, noiseless, fever is few, the mechanical reduction gear in original system is eliminated due to novel system, efficiency is higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053893.1A CN108110916A (en) | 2016-11-25 | 2016-11-25 | A kind of new pumping unit is designed with disc-type permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053893.1A CN108110916A (en) | 2016-11-25 | 2016-11-25 | A kind of new pumping unit is designed with disc-type permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108110916A true CN108110916A (en) | 2018-06-01 |
Family
ID=62204232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611053893.1A Pending CN108110916A (en) | 2016-11-25 | 2016-11-25 | A kind of new pumping unit is designed with disc-type permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108110916A (en) |
-
2016
- 2016-11-25 CN CN201611053893.1A patent/CN108110916A/en active Pending
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180601 |
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| WD01 | Invention patent application deemed withdrawn after publication |