CN1858972A - Chain rare-earth permanent magnetic synchronous motor driving device for oil submersible screw pump - Google Patents
Chain rare-earth permanent magnetic synchronous motor driving device for oil submersible screw pump Download PDFInfo
- Publication number
- CN1858972A CN1858972A CN 200610046671 CN200610046671A CN1858972A CN 1858972 A CN1858972 A CN 1858972A CN 200610046671 CN200610046671 CN 200610046671 CN 200610046671 A CN200610046671 A CN 200610046671A CN 1858972 A CN1858972 A CN 1858972A
- Authority
- CN
- China
- Prior art keywords
- power
- synchronous motor
- earth permanent
- screw pump
- supporting disk
- 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.)
- Pending
Links
Images
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
This invention relates to a drive device of a chain rare earth permanent magnet synchronous motor used in a submersible screw pump including multiple stage power units, which are relatively independent and connected by chains in a shell, a supporting disk is in between two adjacent units and the stator windings of them are parallel on the circuit and the rotor shaft of the adjacent units is connected on the supporting disk by a rolling bearing in the middle, in which, the driving efficiency of the pump is greater than 90%.
Description
Technical field
The invention belongs to oil field oil recovery machiner equipment technical field, particularly a kind of chain rare-earth permanent magnetic synchronous motor driving device that is used for submersible screw pump.
Background technology
Motor in the submersible screw pump that generally adopts in the world is generally the two poles of the earth three phase squirrel cage induction motor of slim-lined construction at present.The length that the stator of the two poles of the earth three phase squirrel cage induction motor of this slim-lined construction adopts electrical sheet to form is the stagewise stator core of 320-450mm, is to be separated by nonmagnetics between at different levels, is fitted in the seamless steel pipe shell; The two-pole stator winding, elongated the rolling off the production line of way of adopting artificial threading; Rotor also is made up of multistage, and the length of each grade is consistent with stator core length, and every grade of rotor forms a closed circuit, and not be contained in main shaft on other rotor circuits at different levels link to each other; Rolling bearing in the middle of being equipped with between the rotors at different levels, it rests on the nonmagnetics of stator, in case fastening contacts with rotor.The long-term production practice shows that there are the following problems for the asynchronous motor of traditional oil-immersed pump: the uneven problem of (1) rotor power division at different levels, and there is revolutional slip in asynchronous motor, and the revolutional slip meeting of rotors at different levels is difference owing to the deviation on making.When common driving coaxial load, have motor at different levels inevitably because the difference of revolutional slip, and load allocating is inhomogeneous.Therefore, may cause the motor local overheating, shorten electrical machinery life.(2) slip power loss and heat dissipation problem thereof, because whole motor is operated in the deep layer place of underground several kms, the heat radiation of motor is a very important problem.The slip power loss of asynchronous motor rotor is its topmost loss, and it distributes main by radiation and convection current in airtight motor gas-gap space, and radiating condition and unfavorable is having a strong impact on motor useful life.(3) the asynchronous motor stator winding problem that rolls off the production line, the stator of asynchronous motor are unshakable in one's determination compositions of multistage magnetic that non magnetic thing separates, and the two-stage stator winding adopts elongated vertically technology manufacturing of rolling off the production line.Because the slim-lined construction of this type of motor, motor inserting-coil can only adopt the method for artificial threading to roll off the production line, and manufacturing process is quite complicated, is not easy to large-scale production, and relatively more difficult when maintenance.Because the above-mentioned subject matter that the Asynchronous Motor Driving mode exists, people are always at seeking solution.The patent No. is 98239542.6 " low-speed bidirectional submersible screw pump ", invented a kind of low-speed bidirectional submersible screw pump, this invention is owing to adopted the direct drive screw pump of down-hole submersible electric machine with oil, cancelled in the prior art rod string as power transmission shaft, therefore the production accident of having avoided rod parting to cause, and following well depth is unrestricted, can use in inclined shaft and directional well, but this invention belongs to the oil-immersed pump that gear reduction is arranged.Be that low-speed bidirectional submersible screw pump or asynchronous motor all need decelerator, efficient and power factor are all lower, and power consumption is bigger, cause oil field electricity charge spending huge.Along with the reduction of oil field system cost for oil production, oil-immersed pump recovers the oil has become one of important means of oilfield stable production.The quantity of oil-immersed pump and energy consumption are all comparatively considerable.The installation exercise more complicated of oil-immersed pump, the expense of each operation is also very expensive.Improve the performance index of oil-immersed pump drive motors, improve the useful life and the operational efficiency of oil-immersed pump drive motor, thereby realize energy efficiency better, improve the power supply situation of electrical network, play a part very important the development of oil-immersed pump industry.The length of the running life of submersible electric machine with oil, quite serious to the influence of cost for oil production and workload, in oil price international today, bring tremendous influence for the profit of oil play.
Summary of the invention
The present invention provides a kind of chain rare-earth permanent magnetic synchronous motor driving device that is used for submersible screw pump for solving the problem of above-mentioned existence, and it is to adopt chain structure, by the Frequency Converter Control speed governing, finishes the oil pumping acting to drive submersible screw pump.
The present invention is made of the drive unit of submersible screw pump a plurality of rare-earth permanent-magnet synchronous motors.Whole device includes multistage power cell, power cells at different levels are relatively independent rare-earth permanent-magnet synchronous motor power cell, each unit adopts chain structure to connect, place housing, be to press-fit successively in the seamless steel pipe housing behind the intact line under each power cell stator, between each adjacent power unit supporting disk is installed, its supporting disk is non magnetic, non-conductive material, can be plastics or nylon material, have groove or semicircle orifice in each stator upper edge cylindrical side, the stator winding of each adjacent cells is connected in parallel on circuit, each unit power line is introduced by groove or semicircle orifice, the power cord connector of each unit stator winding places on the supporting disk, and the armature spindle of each adjacent power unit is connected on the supporting disk between each adjacent stators by middle rolling bearing, and the segmentation that is used for each power cell rotor is supported.Each armature spindle two ends is respectively cross bath and the wedge structure that matches, and each unit armature spindle is by integral body of the mutually nested formation with wedge of groove of end.
Electrical control of the present invention is to be chain rare-earth permanent magnetic synchronous motor power supply by microelectronics-electronic frequency convertor-leader cable.External control signal is handled by microelectronics, and signal is inputed to frequency converter, and frequency converter provides required voltage and electric current by lead-in wire for motor.
The present invention is by the variable frequency regulating speed control rare-earth permanent-magnet synchronous motor, forms the low speed high torque drive system, and all reducing gears of cancellation submersible screw pump are realized the gearless driving of oil pumping system.The present invention can fundamentally overcome unfavorable factors such as traditional submersible screw pump asynchronous motor transmission efficiency is low, the operate power factor is low, load Distribution is inhomogeneous, maintenance workload is big; The transmission efficiency that makes submersible screw pump has reduced the power of drive motor greater than 90%, and the power factor of system remains on more than 0.95; Rotating speed does not change with load, the operation stability height.In running, as long as supply frequency is certain, the rotating speed of rare-earth permanent-magnet synchronous motor does not change with the size of load, thereby its overload capacity is bigger than corresponding asynchronous motor.The volume and weight of rare-earth permanent-magnet synchronous motor is than same capacity, little with the asynchronous motor of number of poles.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a rotor axial end structural representation of the present invention,
Fig. 3 is stator cross section structure schematic diagram among the present invention;
1. housings among the figure, 2. power cell, 3. armature spindle, 4. supporting disk, 5. groove or wedge, 6. rotor, 7. stator, 8. groove.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in detail:
Embodiment: mechanical structure of the present invention, as shown in Figure 1, whole device includes multistage power cell, power cells 2 at different levels are relatively independent rare-earth permanent-magnet synchronous motor, the rated power of power cell 2 can be at 5kW～15kW, power cell 2 progression of serial connection are decided according to the requirement of load, adopt chain structure between each power cell 2, be installed in the housing 1, housing 1 is a steel pipe, be to press-fit successively in seamless steel pipe housing 1 behind 7 times intact lines of stator of each power cell 2, between each adjacent power unit 2 supporting disk 4 is installed, its supporting disk 4 is non magnetic, non-conductive material, adopt plastic material in this example, have groove 8 in each stator 7 upper edge cylindrical sides, the winding of the stator 7 of each adjacent power unit 2 is connected in parallel on circuit, each unit power line is introduced by groove or semicircle orifice, and the power cord connector of each unit stator winding places on the supporting disk; The armature spindle 3 of each adjacent power unit 2 is connected on the supporting disk 4 between each adjacent stators 7 by middle rolling bearing, its armature spindle 3 two ends are respectively cross bath and the wedge structure that matches, and each power cell 2 is by integral body of the mutually nested formation with wedge of groove of armature spindle 3 ends.
This chain type syndeton of the present invention makes the armature spindle 3 of each power cell 2 be fixed together, in the course of the work, and each power cell 2 run-in synchronism.Electrical control is to provide required voltage and electric current by microelectronics signal processor, frequency converter for device of the present invention.The microelectronics signal processor receives outside command signal and transducing signal, and the frequency of control of conversion device output voltage after treatment is to satisfy the job requirement of load.The external command signal be the operator operation, stop and command signal such as speed governing.Transducing signal is the operating condition feedback signal of this invention device, comprising: electric current, temperature, rotating speed, and from the coherent signal of other system of oil well.
Claims (3)
1, a kind of chain rare-earth permanent magnetic synchronous motor driving device that is used for submersible screw pump, it is characterized in that including multistage power cell, power cells at different levels are relatively independent rare-earth permanent-magnet synchronous motor power cell, each power cell adopts chain structure to connect, place housing, between each adjacent power unit supporting disk is installed, the stator winding of each adjacent power unit is connected in parallel on circuit, and the armature spindle of each adjacent power unit is connected on the supporting disk between each adjacent stators by middle rolling bearing.
2, the chain rare-earth permanent magnetic synchronous motor driving device that is used for submersible screw pump according to claim 1 is characterized in that described each armature spindle two ends are respectively cross bath and the wedge structure that matches; Have groove or semicircle orifice in each stator upper edge cylindrical side, each power cell power line is introduced by groove or semicircle orifice, and the power cord connector of each power cell stator winding places on the supporting disk.
3, the chain rare-earth permanent magnetic synchronous motor driving device that is used for submersible screw pump according to claim 1 is characterized in that the supporting disk that is equipped with between described each adjacent stator is non magnetic, non-conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610046671 CN1858972A (en) | 2006-05-25 | 2006-05-25 | Chain rare-earth permanent magnetic synchronous motor driving device for oil submersible screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610046671 CN1858972A (en) | 2006-05-25 | 2006-05-25 | Chain rare-earth permanent magnetic synchronous motor driving device for oil submersible screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1858972A true CN1858972A (en) | 2006-11-08 |
Family
ID=37297845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610046671 Pending CN1858972A (en) | 2006-05-25 | 2006-05-25 | Chain rare-earth permanent magnetic synchronous motor driving device for oil submersible screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1858972A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223032A (en) * | 2011-06-27 | 2011-10-19 | 沈阳工业大学 | Ultra-long structure motor composed of unit combined permanent magnet synchronous motors |
| CN102317571A (en) * | 2009-02-10 | 2012-01-11 | 英国石油勘探运作有限公司 | Pump |
| CN101877521B (en) * | 2009-04-30 | 2013-01-02 | 浙江中科德润科技有限公司 | Multi-section servo submersible motor |
| CN111030411A (en) * | 2019-11-18 | 2020-04-17 | 航天科工智能机器人有限责任公司 | Combined torque motor |
-
2006
- 2006-05-25 CN CN 200610046671 patent/CN1858972A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317571A (en) * | 2009-02-10 | 2012-01-11 | 英国石油勘探运作有限公司 | Pump |
| CN102317571B (en) * | 2009-02-10 | 2014-11-26 | 英国石油勘探运作有限公司 | Pump |
| US8985975B2 (en) | 2009-02-10 | 2015-03-24 | Bp Exploration Operating Company Limited | Multistage pump suitable for use in wells |
| CN101877521B (en) * | 2009-04-30 | 2013-01-02 | 浙江中科德润科技有限公司 | Multi-section servo submersible motor |
| CN102223032A (en) * | 2011-06-27 | 2011-10-19 | 沈阳工业大学 | Ultra-long structure motor composed of unit combined permanent magnet synchronous motors |
| CN111030411A (en) * | 2019-11-18 | 2020-04-17 | 航天科工智能机器人有限责任公司 | Combined torque motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2786861Y (en) | Rare earth permanent-magnetic brushless direct current motor | |
| CN103296805B (en) | A kind of built-in outer rotor permanent-magnet motor direct-drive mine hoist | |
| CN100384065C (en) | High actuating torque low operating power three phase capacitane type bisquirrel motor | |
| CN102570756A (en) | Self-start permanent-magnet synchronous submersible motor | |
| CN1858972A (en) | Chain rare-earth permanent magnetic synchronous motor driving device for oil submersible screw pump | |
| CN203289295U (en) | Low-speed large-torque submersible permanent-magnetic synchronous motor | |
| Liang et al. | Recent market and technical trends in copper rotors for high-efficiency induction motors | |
| CN109038950A (en) | A kind of synchronous permanent-magnet motor roller using electromagnetic direct-drive technology | |
| CN102868270B (en) | Double-stator electrically-driven/power-generating joint operation device with wind turbine | |
| CN208479438U (en) | The latent oil of underground cartridge type operation directly drives the ultra-fine long high performance permanent magnetic synchronous motor of pump | |
| CN201254419Y (en) | Asynchronous gearless traction machine of household elevator | |
| CN111416492B (en) | Low-leakage oil-submersible permanent magnet rotary synchronous motor | |
| CN102223032B (en) | Ultra-long structure motor composed of unit combined permanent magnet synchronous motors | |
| CN202334249U (en) | Novel radial magnetic field induction-type asynchronous permanent-magnet coupler | |
| CN101320925B (en) | Low-voltage high power multi-branch permanent magnet synchronous motor | |
| CN200982293Y (en) | Direct-driven submersible electric pump | |
| CN201041975Y (en) | Low-speed and ultra-high efficient lanthanon permanent magnetic synchronous electromotor | |
| CN201204525Y (en) | Integral multi-speed multi-power motor | |
| CN202142969U (en) | Low-rotation-speed large-torque permanent magnet synchronous servo control submersible motor | |
| CN204947863U (en) | The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous | |
| CN202260938U (en) | Low speed large torque alternating-current permanent magnet synchronous motor | |
| CN102468731A (en) | Stator of permanent-magnet synchronous motor | |
| CN2614398Y (en) | High slip ratio energy-saving three-phase asynchronous motor | |
| CN204030899U (en) | High-slip, super-high slip ratio threephase asynchronous | |
| CN200997554Y (en) | Permanent-magnetic synchronizing servo motor of low-voltage AC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |