CN105863566A - Composite permanent magnet motor direct driven walking beam type oil pumping machine - Google Patents
Composite permanent magnet motor direct driven walking beam type oil pumping machine Download PDFInfo
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- CN105863566A CN105863566A CN201510034273.2A CN201510034273A CN105863566A CN 105863566 A CN105863566 A CN 105863566A CN 201510034273 A CN201510034273 A CN 201510034273A CN 105863566 A CN105863566 A CN 105863566A
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- permanent magnetism
- walking beam
- speed rotor
- permanent magnet
- compound machine
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Abstract
The invention discloses a composite permanent magnet motor direct driven walking beam type oil pumping machine. The composite permanent magnet motor direct driven walking beam type oil pumping machine comprises a composite permanent magnet motor and a control cabinet thereof, a crank, a connecting rod, a balance block, a walking beam and a horse head. Besides a surface driving system (an induction motor, a belt and a gear box), the composite permanent magnet motor direct driven walking beam type oil pumping machine has the completely same basic structure with that of a traditional walking beam type oil pumping machine. Due to the fact that the composite permanent magnet motor has the characteristics of high efficiency, low heat, high torque density, low noise and the like, and especially, a composite permanent magnet motor and a speed reducer gearbox of the same torque specification are of the same size, the composite permanent magnet motor can replace the traditional induction motor, belt and gear box on the basis of not changing the structural size of an original oil pumping machine, and thus the composite permanent magnet motor direct driven walking beam type oil pumping machine is obtained.
Description
Technical field
The present invention relates to petroleum recovering manufacturing field of equipment.The beam pumping unit that a kind of permanent magnetism compound machine directly drives.
Background technology
The rotary motion of reduction box is changed into the linear reciprocating motion of sucker rod by tradition beam pumping unit by crank, connecting rod.Wherein reduction box is typically connected through belt by induction machine.Due to beam pumping unit reliable operation, easy to use, it is most widely used a kind of equipment in current oil field equipment.
Although various novel screw-pump oil extractors, pylon reciprocating beam-pumping unit, linear motor oil pumping machine etc. occurs in succession, but eventually because of various defects, fails all the time to change the beam pumping unit principal status of public economy in oil production equipment.
Although there being people directly to drive transformation for the ground table-driven link of beam pumping unit, but owing to the speed reducing ratio of deceleration punch-out equipment belt is more than 150 times, therefore want to replace the tradition induction machine of beam pumping unit, belt and reduction box by conventional motors extremely difficult.Because its volume substantially exceeds reduction box, energy saving of system is the most very limited, and therefore, the beam pumping unit using conventional motors directly to drive is difficult to there is actual application value.
Recently, the present inventor has invented a kind of permanent magnetism compound machine, and it has dual-rotor structure, and wherein low speed rotor can export big torque, and torque density reaches more than every cubic metre of 80,000 Ns of rice.Using this novel permanent magnetism compound machine as the direct driving motor of beam pumping unit, its volume is suitable with the same torque specification reduction box of tradition beam pumping unit.To this end, the direct-drive beam pumping unit that this invention makes novel permanent magnetism compound machine constitute can realize smoothly.And this kind of direct-drive beam pumping unit has the outstanding advantages such as high efficiency, low noise, non-maintaining, small size, low-temperature-rise.
Summary of the invention
It is an object of the invention to provide the beam pumping unit that a kind of permanent magnetism compound machine directly drives, overcome the deficiency existing for prior art.To achieve these goals, the present invention designs the beam pumping unit that a kind of permanent magnetism compound machine directly drives, by permanent magnetism compound machine 102, switch board 101, crank 103, connecting rod 104, balance weight 105, walking beam 106, caput Equi Asini 107 and polished rod 108 form, it is characterized in that: the low speed rotor of permanent magnetism compound machine is by the end of both-end output main shaft connecting crank 103, and the top of crank 103 connects balance weight 105, and the middle part of crank 103 is connected the lower end of connecting rod 104 by pivot pin.Connecting rod 104 upper end is connected walking beam 106 rear end by pivot pin, and the middle part of walking beam 106 is connected to cantilever tip by pivot pin, and the front end of walking beam 106 connects caput Equi Asini 107, and caput Equi Asini 107 connects polished rod 108.Two rotors of permanent magnetism compound electric facility, one is low speed rotor 201, another is high speed rotor 202, the two ends of both-end output main shaft 203 are arranged on support (stator) by bearing connection, support (stator) inner side is provided with permanent magnet, low speed rotor 201 is fixing with both-end output main shaft 203 to be connected, interior intracavity at low speed rotor 201 is provided with high speed rotor 202, high speed rotor 202 is connected with the both-end output main shaft 203 being positioned at low speed rotor 201 intracavity by bearing, and both-end output main shaft 203 is connected with crank 103.The inner arc of the stalloy of low speed rotor 201 uses the form that thin slice connects.High speed rotor 202 is made up of with annular punching 304 rotor magnetic steel 301, the circumferential edges of annular punching offers groove 305, some pieces of rotor magnetic steels 301 are around the cylindrical of annular punching, groove 305 is between adjacent rotor magnet steel 301, elastic fill block 302 it is provided with between rotor magnetic steel 301, the bottom of elastic fill block 302 is positioned at groove, elastic fill block 302 is offered vertically porose, is inserted with metal bar 303 in hole.Rotor magnetic steel 301 is for waiting radius bias air gap magnet steel.
Main advantages of the present invention are by using the novel permanent magnetic compound machine of a kind of efficient high torque density directly to drive beam pumping unit, need not belt and reduction box, decrease driving link, improve system reliability, reduce maintenance, improve system effectiveness.The particularly feature of permanent magnetism compound machine self solves the tradition unapproachable small size of permanent-magnetic synchronous rotation motor, high efficiency problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of the permanent magnetism compound machine direct-drive beam pumping unit of embodiments of the invention.
Fig. 2 is the machine construction principle schematic diagram of the permanent magnetism compound machine of embodiments of the invention.
Fig. 3 is the low speed rotor generalized section of the permanent magnetism compound machine of embodiments of the invention.
Fig. 4 is the high speed rotor generalized section of the permanent magnetism compound machine of embodiments of the invention.
Detailed description of the invention
The beam pumping unit that a kind of permanent magnetism compound machine directly drives, by permanent magnetism compound machine 102, switch board 101, crank 103, connecting rod 104, balance weight 105, walking beam 106, caput Equi Asini 107 and polished rod 108 form, it is characterised in that: the low speed rotor of permanent magnetism compound machine is by the end of both-end output main shaft connecting crank 103, the top of crank 103 connects balance weight 105, and the middle part of crank 103 is connected the lower end of connecting rod 104 by pivot pin.Connecting rod 104 upper end is connected walking beam 106 rear end by pivot pin, and the middle part of walking beam 106 is connected to cantilever tip by pivot pin, and the front end of walking beam 106 connects caput Equi Asini 107, and caput Equi Asini 107 connects polished rod 108.Two rotors of permanent magnetism compound electric facility, one is low speed rotor 201, another is high speed rotor 202, the two ends of both-end output main shaft 203 are arranged on support (stator) by bearing connection, support (stator) inner side is provided with permanent magnet, low speed rotor 201 is fixing with both-end output main shaft 203 to be connected, interior intracavity at low speed rotor 201 is provided with high speed rotor 202, high speed rotor 202 is connected with the both-end output main shaft 203 being positioned at low speed rotor 201 intracavity by bearing, and both-end output main shaft 203 is connected with crank 103.The inner arc of the stalloy of low speed rotor 201 uses the form that thin slice connects.High speed rotor 202 is made up of with annular punching 304 rotor magnetic steel 301, the circumferential edges of annular punching offers groove 305, some pieces of rotor magnetic steels 301 are around the cylindrical of annular punching, groove 305 is between adjacent rotor magnet steel 301, elastic fill block 302 it is provided with between rotor magnetic steel 301, the bottom of elastic fill block 302 is positioned at groove, elastic fill block 302 is offered vertically porose, is inserted with metal bar 303 in hole.Rotor magnetic steel 301 is for waiting radius bias air gap magnet steel.
Embodiment:
This direct-drive beam pumping unit possesses permanent magnetism compound machine 102, switch board 101, crank 103, connecting rod 104, balance weight 105, walking beam 106, caput Equi Asini 107 and polished rod 108.
Described permanent magnetism compound machine 102 is controlled by switch board 101, switch board 101 is powered by electrical network, the switch board 101 high speed rotor 202 by VFC permanent magnetism compound machine 102, high speed rotor 202 drives the low speed rotor 201 of permanent magnetism compound machine 102 after magnetic field speed reduction, the low speed rotor 201 of permanent magnetism compound machine 102 and permanent magnetism compound machine double go out main shaft 203 be rigidly connected, thus drive the crank 103 of beam pumping unit to rotate, crank 103 is connected with the afterbody of walking beam 106 by connecting rod 104, the head of walking beam 106 is equipped with caput Equi Asini 107, caput Equi Asini 107 makees up and down reciprocatingly action by Steel rope drive polished rod 108, finally realize oil producing operation.
Two rotors are comprised in the support 204 of described permanent magnetism compound machine 101, one is low speed rotor 201, another is high speed rotor 202, high speed rotor 202 produces a high speed rotating magnetic field after rotating, this magnetic field produces a low speed harmonic field through ovennodulation, this harmonic field makes low speed rotor 201 synchronous rotary of permanent magnetism compound machine 102, and the both-end output main shaft 203 passing through permanent magnetism compound machine exports low-speed big and drives crank 103 to rotate.205 is armature winding (or stator core).
Described permanent magnetism compound machine 101 by the generalized section of the low speed rotor 201 of silicon steel plate stacking as shown in Figure 3, low speed rotor 201 use bottom form in flakes, both enhancing mechanical strength had been played, it is easy to whole punching processing laminate, play again reduction torque pulsation, reduce the effect of high speed inner rotor face loss.
The generalized section of the high speed rotor 202 of described permanent magnetism compound machine 101 is as shown in Figure 4, it is overrided to form by annular punching 304, on the surface of annular punching 304 equipped with not concentric magnet steel of radius such as the rotor magnetic steel 301 of arc, employings, both improve the utilization rate of magnet steel, optimize again potential waveform.Annular punching 304 uses groove 305 to design, groove 305 is between adjacent rotor magnet steel 301, high strength elastic fill block 302 is put between adjacent rotor magnet steel 301, metal bar 303 is inserted in the hole of high strength elastic fill block 302, make high strength elastic fill block 302 expand, securely rotor magnetic steel 301 is fixed on annular punching 304 surface.Both ensure that magnetic property, turn avoid electromagnetic oscillation.
The beam pumping unit that described permanent magnetism compound machine 101 directly drives has a feature following aspects compared with tradition beam pumping unit:
One, drive efficiency
The drive system of existing beam pumping unit is made up of prime mover (generally 6 poles or the induction machine of 8 poles), belt, reduction box.Although the rated efficiency of three links is higher, but owing to the load of oil pumper changes from minimum to maximum, average load is relatively low so that the Rate of average load of drive system is relatively low, far below nominal load, therefore induction machine, belt, reduction box average efficiency relatively low.Permanent magnetism compound machine direct drive pumping unit only has permanent magnetism compound machine one to drive link, and drive efficiency has innate advantage.And the efficiency of permanent magnetism compound machine self is higher, and the average efficiency in more than 25% loading range is about 80 ~ 85%, therefore can be effectively improved the efficiency of whole system.As a example by the permanent magnetism compound machine direct drive pumping unit field measurement data of First in the world (Daqing oil field recover the oil three factories) of the present inventor's design, system effectiveness improves about 20%, and hundred meters of ton liquid are gained merit power consumption economize on electricity nearly 20%.
Two, maintaining
The maintaining of the drive system of existing beam pumping unit is mainly reduction box and belt: reduction box needs every half a year changes a lubricating oil, and oil field is greatly all in ruthless area, the temperature difference is high, the easy aging leakage of oil of oil sealing, processes not in time and will have a strong impact on the reduction box life-span.Although belt cost is relatively low, but being belonging to easily-consumed products, short then a couple of days, long then two or three months will change, and workload is bigger.Permanent magnetism compound machine direct drive pumping unit belongs to non-maintaining product, and what motor body uniquely needed maintenance is exactly to add a butter in every 3 years, and maintenance cost is extremely low.
Three, service life
The life-span of the reduction box of the drive system of existing beam pumping unit, in the several years, depends on maintaining quality and loading rate.Belt belongs to easily-consumed products, and the life-span of induction machine, also about the several years, depends primarily on load.The temperature rise (maximum load is run continuously) of permanent magnetism compound machine type approval test only has about 23K, and the temperature rise of on-the-spot test will be lower, is less than the standard of 80K far below the B-class insulation temperature rise of national regulation.In addition, the bearing of compound machine is big bearing, the slow-speed of revolution, and in theoretical nearly 100 years of the life-span, the life-span of permanent magnetism compound machine exceeds well over common induction machine in sum, and the life-span is more than 15 years.
Claims (5)
1. the beam pumping unit that a permanent magnetism compound machine directly drives, by permanent magnetism compound machine (102), switch board (101), crank (103), connecting rod (104), balance weight (105), walking beam (106), caput Equi Asini (107) and polished rod (108) composition, it is characterized in that: the low speed rotor of permanent magnetism compound machine is by the end of both-end output main shaft connecting crank (103), the top of crank (103) connects has balance weight (105), the middle part of crank (103) to be connected the lower end of connecting rod (104) by pivot pin.Connecting rod (104) upper end is connected walking beam (106) rear end by pivot pin, and the middle part of walking beam (106) is connected to cantilever tip by pivot pin, and the front end of walking beam (106) connects caput Equi Asini (107), and caput Equi Asini (107) connects polished rod (108).
The beam pumping unit that a kind of permanent magnetism compound machine the most according to claim 1 directly drives, it is characterized in that: two rotors of permanent magnetism compound electric facility, one is low speed rotor (201), another is high speed rotor (202), the two ends of both-end output main shaft (203) are arranged on support (stator) by bearing connection, support (stator) inner side is provided with permanent magnet, low speed rotor (201) is fixing with both-end output main shaft (203) to be connected, interior intracavity at low speed rotor (201) is provided with high speed rotor (202), high speed rotor (202) is connected with both-end output main shaft (203) being positioned at low speed rotor (201) intracavity by bearing, both-end output main shaft (203) is connected with crank (103).
The beam pumping unit that a kind of permanent magnetism compound machine the most according to claim 2 directly drives, it is characterised in that: the inner arc of the stalloy of low speed rotor (201) uses the form that thin slice connects.
The beam pumping unit that a kind of permanent magnetism compound machine the most according to claim 2 directly drives, it is characterized in that: high speed rotor (202) is made up of with annular punching (304) rotor magnetic steel (301), the circumferential edges of annular punching offers groove (305), the cylindrical of some pieces of rotor magnetic steel (301) cincture annular punchings, groove (305) is positioned between adjacent rotor magnet steel (301), elastic fill block (302) it is provided with between rotor magnetic steel (301), the bottom of elastic fill block (302) is positioned at groove, offer porose on elastic fill block (302) vertically, hole is inserted with metal bar (303).
The beam pumping unit that a kind of permanent magnetism compound machine the most according to claim 4 directly drives, it is characterised in that: rotor magnetic steel (301) is to wait radius bias air gap magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510034273.2A CN105863566A (en) | 2015-01-23 | 2015-01-23 | Composite permanent magnet motor direct driven walking beam type oil pumping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510034273.2A CN105863566A (en) | 2015-01-23 | 2015-01-23 | Composite permanent magnet motor direct driven walking beam type oil pumping machine |
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| CN105863566A true CN105863566A (en) | 2016-08-17 |
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| CN201510034273.2A Pending CN105863566A (en) | 2015-01-23 | 2015-01-23 | Composite permanent magnet motor direct driven walking beam type oil pumping machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330234A (en) * | 2008-04-21 | 2008-12-24 | 上海大学 | Direct-drive composite type permanent magnet motor |
| CN101929321A (en) * | 2009-06-22 | 2010-12-29 | 昆山永恒盛工业技术有限公司 | Direct-drive beam pumping unit with permanent-magnetic synchronous rotation motor |
| CN101976905A (en) * | 2008-04-21 | 2011-02-16 | 许晓华 | Direct-drive composite permanent magnet motor |
| CN102111025A (en) * | 2009-12-25 | 2011-06-29 | 中山大洋电机股份有限公司 | Permanent magnet rotor of electric motor |
| US20130151216A1 (en) * | 2005-10-13 | 2013-06-13 | Pumpwell Solutions Ltd. | Method and system for optimizing downhole fluid production |
-
2015
- 2015-01-23 CN CN201510034273.2A patent/CN105863566A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130151216A1 (en) * | 2005-10-13 | 2013-06-13 | Pumpwell Solutions Ltd. | Method and system for optimizing downhole fluid production |
| CN101330234A (en) * | 2008-04-21 | 2008-12-24 | 上海大学 | Direct-drive composite type permanent magnet motor |
| CN101976905A (en) * | 2008-04-21 | 2011-02-16 | 许晓华 | Direct-drive composite permanent magnet motor |
| CN101929321A (en) * | 2009-06-22 | 2010-12-29 | 昆山永恒盛工业技术有限公司 | Direct-drive beam pumping unit with permanent-magnetic synchronous rotation motor |
| CN102111025A (en) * | 2009-12-25 | 2011-06-29 | 中山大洋电机股份有限公司 | Permanent magnet rotor of electric motor |
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Application publication date: 20160817 |