CN108347146A - A kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump - Google Patents
A kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump Download PDFInfo
- Publication number
- CN108347146A CN108347146A CN201710489983.3A CN201710489983A CN108347146A CN 108347146 A CN108347146 A CN 108347146A CN 201710489983 A CN201710489983 A CN 201710489983A CN 108347146 A CN108347146 A CN 108347146A
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- China
- Prior art keywords
- permanent magnet
- drilling pump
- motor
- oil
- end cap
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- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to motor field, more particularly to a kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump.Include motor body and oil-well rig drilling pump, motor body includes organic block, the stator core in engine base and rotor, engine base is equipped with terminal box and cooling blower, one end of engine base is equipped with end cap, end cap is equipped with the armature spindle being connect with rotor, and the stator core is laminated by fan-shaped stator punching, and the oil-well rig drilling pump is equipped with former pump drive shaft, the armature spindle is hollow shaft, and original pump drive shaft is stretched into hollow shaft and is connected and fixed by expansion set.The present invention provides the intermediate transmissions links such as a kind of cancellation coupler, gearbox, conveyer belt, improve the special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump of transmission efficiency.
Description
Technical field
The present invention relates to motor field, more particularly to a kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump.
Background technology
At present in oil exploitation work, there are mainly three types of the systems of driving oil-well rig drilling pump：One, asynchronous motor
+ conveyer belt+slush pump.Two, the positive vehicle retarder+slush pump of dc motor+fluid coupling.Three, ac motor/diesel engine
The positive vehicle retarder+compound box+slush pump of+fluid coupling.But in these types of drive system, exist it is many be difficult to overcome ask
Topic：
A, transmission chain is complicated, and transmission efficiency is low；
B, starting current is big, has impact to power grid；
C, the positive vehicle decelerator trouble rate of transmission belt, transmission chain, fluid coupling is high, and repair and maintenance cost is big；
D, system footprint area is big；
E, conventional motors efficiency is low, power factor is low, and drilling pump actual loading rate is not high, and conventional motors are in low-load
Lower efficiency and power factor decline apparent.
Invention content
Deficiency in view of the above technology, the present invention provides the intermediate transmissions such as a kind of cancellation coupler, gearbox, conveyer belt
Link improves the special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump of transmission efficiency.
The technical scheme is that：A kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump, includes electricity
Motivation ontology and oil-well rig drilling pump, motor body include organic block, the stator core in engine base and rotor, engine base
It is equipped with terminal box and cooling blower, one end of engine base is equipped with end cap, and end cap is equipped with the armature spindle being connect with rotor, described
Stator core laminated by fan-shaped stator punching, the oil-well rig drilling pump is equipped with former pump drive shaft, the armature spindle
For hollow shaft, original pump drive shaft is stretched into hollow shaft and is connected and fixed by expansion set.
Preferably, the end cap is welded by proximate matter, and reinforcing rib is welded on end cap, loss of weight is additionally provided on the end cap
Hole.
Preferably, the rotor uses permanent magnet excitation, and permanent magnet cooling air duct is arranged, and is fanned by the rotation of rotor installation
Leaf provides cycle wind-power.
Preferably, the cooling blower uses centrifugal blower, is mounted at the top of motor.
Preferably, the end cap is equipped with flange end cap, which connect with end cap, the other end and oil
Drill drilling pump connection.
Preferably, the machine base portion is equipped with motor chassis, and oil-well rig drilling pump bottom is equipped with drilling pump chassis,
The motor chassis is connect with drilling pump chassis.
Preferably, the rotor uses sintered Nd-Fe-B permanent magnetic material excitation.
The beneficial effects of the invention are as follows：1, frequency conversion permanent magnet motor directly drives drilling pump, cancels coupler, gearbox, transmission
The intermediate transmissions links such as band improve transmission efficiency；2, motor efficiency is more than country-level Energy Efficiency Standard, and power factor is high；3、
Realize stepless time adjustment；4, it realizes substantially non-maintaining, saves a large amount of maintenance costs；5, installation space is saved.
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the sectional view of engine base in the embodiment of the present invention；
Fig. 2 is the structure chart of engine base in the embodiment of the present invention；
Fig. 3 is the structure chart of stator core in the embodiment of the present invention；
Fig. 4 is the structure chart of rotor in the embodiment of the present invention；
Fig. 5 is the structure chart of rotor in the embodiment of the present invention；
Fig. 6 is the structure chart of pole core in the embodiment of the present invention；
Fig. 7 is the sectional view of end cap in the embodiment of the present invention；
Fig. 8 is drive end bearing installation diagram in the embodiment of the present invention；
Fig. 9 is non-driven-end bearing installation diagram in the embodiment of the present invention；
Figure 10 is cooling blower wind path schematic diagram in the embodiment of the present invention；
Overall structure figure in Figure 11 embodiment of the present invention.
Specific implementation mode
It is using magnetic field is medium progress mechanical energy and the calutron mutually converted of electric energy that the present invention, which provides motor,.For in electricity
Air-gap field necessary to carrying out energy converting between mechanical is established in machine, it can be there are two types of method：One is passed in machine winding
Electric current generates magnetic field, such as common direct current generator, synchronous motor and asynchronous machine etc.；Another kind is to generate magnetic by permanent magnet
Field, i.e. permanent magnet synchronous motor.
Permanent magnet motor and traditional electric excitation synchronous motor maximum be distinguished as traditional electric excitation synchronous motor be by
Electric current is passed through in Exciting Windings for Transverse Differential Protection to generate magnetic field, and permanent magnet synchronous motor is to establish magnetic field by permanent magnet.Permanent-magnet electric
Machine has the advantages such as high efficiency, High Power Factor, small compared with conventional motors.This motor is synchronous permanent-magnet motor
Machine, ontology are horizontal type structure, are made of stator, rotor, end cap, bearing assembly, terminal box, cooling blower.
The present invention provides a kind of special frequency conversion permanent magnet synchronous motors of oil-well rig drilling pump, include motor body
1 and oil-well rig drilling pump 2, motor body 1 includes organic block 3, the stator core in engine base 3 and rotor, on engine base 3
Equipped with terminal box 4 and cooling blower 5, one end of engine base 3 is equipped with end cap 6, and end cap 6 is equipped with the armature spindle 7 being connect with rotor,
The stator core is laminated by fan-shaped stator punching, and the oil-well rig drilling pump is equipped with former pump drive shaft 8, and described turns
Sub- axis 7 is hollow shaft, and original pump drive shaft 8 is stretched into hollow shaft and is connected and fixed by expansion set 9.
The end cap 6 is welded by proximate matter, and reinforcing rib is welded on end cap 6, lightening hole is additionally provided on the end cap 6.
The rotor uses permanent magnet excitation, and permanent magnet cooling air duct is arranged, and is provided by the rotary fan of rotor installation
Recycle wind-power.
The cooling blower 5 uses centrifugal blower, is mounted at the top of motor.
The end cap 6 is equipped with flange end cap 9, which connects 6 with end cap and connect, the other end and petroleum drilling
Machine drill well pump 2 connects.
3 portions of machine bottom are equipped with motor chassis 10, and 2 bottom of oil-well rig drilling pump is equipped with drilling pump chassis 20,
The motor chassis 10 is connect with drilling pump chassis 20.
The rotor uses sintered Nd-Fe-B permanent magnetic material excitation.
Stator casing is welding structure, housing design surface forced ventilation cooling circuit.Stator core is rushed by fan-shaped stator
Piece laminates, and non-axis stretches side end installation collector ring, and winding lead wire is connected in motor interior in " △ ".Armature spindle is hollow shaft
Structure, original pump drive shaft are stretched into rotor hollow shaft, are connected and fixed with expansion set, and the weight of rotor, which is theoretically pumped by original, drives bearing
Load.Rotor uses permanent magnet excitation, and permanent magnet cooling air duct is arranged, and cycle wind-power is provided by the rotary fan of rotor installation.
End cap 6 is welded by proximate matter, reinforcing rib is welded, if lightening hole (air gap peep hole).Axle stretch end end cap processes flanged axis
Hold outer cover installation stationary plane.
Bearing (deep groove ball bearing is installed when only testing) is not installed at driving end, and anti-drive end installs self-aligning roller bearing.
Main junction box 4 uses increased safety anti-explosion terminal box, installation site to be defaulted as on the right side of engine base (axle stretch end regards it), can root
It requires to determine according to user.
Cooling blower 5 uses centrifugal blower, is mounted at the top of motor.
The anti-condensation heater of installation, stator winding temperature transducer in motor.
Stator is made of engine base, band wound stator iron core and related accessories.
As Figure 1-Figure 2, engine base 1-9 includes siding 1-1, base anchor 1-2, support plate 1-3, side gusset 1-4, heat dissipation
Ring muscle 1-5, enhancing steel ring 1-6, outer cover plate 1-7, main electrical scheme cassette holder 1-8, auxiliary connection cassette holder.
Siding, support plate, side gusset are processed by steel plate；Heat dissipating ring muscle enclose is around engine base barrel dliameter to being welded in engine base cylinder outer circle one by one
On, heat dissipating ring muscle sectionally smooth join is a heat dissipating ring, will be wrapped up at stator core position on pedestal cylinder；Enhancing steel ring is thicker, plays knot
Structure booster action, processing dimension and mounting means are identical as radiating ribs, be arranged in stator core mating part centre and
Both ends；Outer cover plate steel plate edge rolling, cutting, segmentation is buckled in radiating ribs, and several strip holes are opened in outer cover plate, is convenient for outer cover plate
It is welded with radiating ribs.Upper and lower two outer cover plates open air port, overlay on the exposed place of radiating ribs, rise and constitute wind-guiding road and protection
Effect.Junction box seat is welded on engine base outer wall, for fixing main junction box；Cooling blower can be fixed on upper part of the frame.
There is wound stator iron core
As shown in figure 3, there is wound stator iron core by stator core 3-1, winding coil 3-2, confluence ring structure and insulation, slot
Wedge, standard component composition, winding connection are connect for △, are coupled using straight tube copper joint cold pressure.Winding leading-out wire is neatly arranged around end
To line outlet, coupled using straight tube copper joint cold pressure with cable pigtail.Per 2 platinum resistance thermometer sensor,s are mutually installed, it is straight to be put in end
At line 1/2.Whole VPI dipping lacquers are primary.
Stator core is made of stator punching, tooth support, stator pressing ring.
Stator coil uses enameled wire using even winding technologe, electromagnetic wire.
As shown in fig. 4-5, rotor mainly by hollow shaft 4-1, rotor field spider 4-2, every magnetic aluminum strip 4-3, permanent magnet 4-4,
Pole core 4-5, fan blade 4-6 compositions.Motor hollow shaft is with rotor field spider using key connection, slight interference cooperation, rotor
Holder outer round surface fixes 30 every magnetic aluminum strip, and 30 pole cores are justified every outside magnetic aluminum strip every magnetic aluminum strip and pole core edge
Annular uniformly distributed fixed, permanent magnet inserts among adjacent two pole core, and axial float is prevented with connection sheet fixation at both ends.Aluminum strip
Between have ventilation gap, radiate for permanent magnet, circulated air circuit is as shown in figure 3, in operational process, and cycle wind-power is by rotating
Fan blade on rotor and disc provides.
Axis is motor hollow shaft, and rotor support hub, subplate and support tube are welded, every magnetic aluminum strip be it is rectangular, four
Facing cut is flat；
As shown in fig. 6, pole core is made of pole lamination 6-2, pole end-plate 6-3, magnetic pole pull rod 6-1.
Pole lamination is to be oriented to laminate with magnetic pole pull rod, and one piece of pole end-plate is respectively put at both ends, between ensureing pole lamination piece
Under conditions of pressure, magnetic pole pull rod and both ends pole end-plate are welded, pole end-plate will press under the pulling force effect of magnetic pole pull rod
Power is transmitted to pole lamination, to ensure that pole lamination does not flick.
Permanent magnet uses N38UH NdFeB materials, surface to plate NiCuNi+EPO processing,
The air of motor inner cavity is stirred when fan blade is rotated for rotor and forms air stream, in order to air gap and forever
Cooling at magnet.
As shown in fig. 7, engine base both ends end cap is important support element and drilling pump connecting pin end cap plays support motor stator
The effect of son, outboard end end cap play support motor rotor.Driving end and non-drive end shield are all made of welding structure,
End cap is mainly by end plate 7-1, support tube 7-2, connecting plate 7-3, gusset 7-4 compositions.
End plate is all made of 40mm thickness Q235B steel plates.Driving end processes the plane being connect with flange end cap；It is uniformly opened on end plate
6 air gap peep holes, also serve as lightening hole.Support tube is rolled into using Q235B steel plates.Connecting plate, gusset are all made of Q235B steel plates.
Fig. 8-Fig. 9 is bearing assembling structure (Fig. 8 is driving end, Fig. 9 is anti-drive end)
Driving end is mainly made of bearing holder (housing, cover) 8-1, nylon jacket/bearing 8-2, bearing cover 8-3, this motor drive end turns
Subdivision and drilling pump gear axis connection, stationary part are connected with drilling pump end cap.And motor does delivery test and pattern examination
When testing, no drilling pump can be installed, therefore design need to consider to test installation requirement, ensure that stator and rotor accurate positionings, operate steadily can
It leans on.Nylon applies mechanically deep groove ball bearing replacement when experiment, for convenience of positioning repacking nylon jacket when delivery is transported.Pacify for convenience of scene
Dress, nylon jacket are not taken out, and are clearance fit between nylon jacket and hollow shaft.
Non-driven-end bearing equipment configuration
As shown in figure 9, this part is mainly by bearing holder (housing, cover) 9-1, self-aligning roller bearing 9-2, oil scraper ring 9-3, bearing cover
9-4, lip type oil sealing 9-5, shaft end gland 9-6 compositions
Non-driven-end bearing selects self-aligning roller bearing.
Using grease lubrication；Bearing holder (housing, cover), bearing cap ensure certain oil storage space；There are oiling, outages for bearing cap, convenient
Note oil extraction is not shut down.
Bearing holder (housing, cover) processes measuring temperature of bearing hole install for Pt100, and when experiment measures bearing temperature, and standard configuration of dispatching from the factory is without bearing
Thermometric.
As shown in Figure 10, cooling system motor stator cooling is cooled down using casing surface forced ventilation mode, on engine base
Square outer cover plate opens ventilation opening at two, matches two centrifugal blowers, one blows a suction, to increase wind pressure.
End cap flange is the connector between motor stator and the pump housing.Side wherein with pump cooperation is according to former drilling pump
Bearing cover size design, instead of the bearing cover of former drilling pump.Ring flange is made in the side of connection motor, middle part with
Link of boards is to ensure enough intensity.It is welded with dust cover between gusset, is acted on to water proof and dust proof.
Motor chassis is welded using steel plate, weldering connect plate at drilling pump chassis H profile steel.Bottom and the weldering of drilling pump chassis
Fishplate bar is connected with, and chassis is not contacted with ground.
Supporting rack is made of adjusting bolt and supporting steel frame, is bolted to chassis both sides, is played and is adjusted chassis level
The effect of degree and support underframe.
Chassis top surface pad adjusts parallels, then is connected with motor base anchor, is adjusted when for installing in motor installation
The heart is high.Upper surface both sides are welded with baffle, auger shell pit on baffle, for installing jackscrew, to adjust motor or so installation position
It sets.
This product is that the special frequency conversion permanent magnet of oil-well rig drilling pump directly drives motor, eliminates conventional petroleum drilling machine drive chain
The complexity transmission chain such as the positive vehicle retarder of middle conveyer belt, fluid coupling, compound box, universal shaft, realizes and directly drives drilling pump
Drive shaft or bent axle, power transmission are more stable effectively.
Motor mounting means is IMB35, and front end is connected using flange end cap, flange end cap one end is bi-directionally connected with drilling pump
It connects, one end is connect with End cover for motor；Bottom has motor chassis, chassis to link together with drilling pump chassis, realizes electronic
The globality of machine and drilling pump can reduce system noise and vibration.Hollow shaft motor structure, with drilling pump gear shaft with
Expansion set connects, easy to connect, reliable compared with other connection types, while saving a large amount of axially mounted spaces.
Improve shaft strength situation, by sunykatuib analysis, for bearing throughout one's life without needing to change, certain model realizes bearing-free.
Motor rotor uses sintered Nd-Fe-B permanent magnetic material excitation, has that efficient, power factor is high, simple in structure etc.
Advantage.
The length of motor life depends primarily on insulation quality, and the quality of motor insulation quality, in addition to it is electronic
Machine insulation system has outside the Pass, also related with motor insulation processing.Motor is using import electromagnetic wire, VIP vacuum pressure impregnations
Technology ensure that following characteristics：Insulate bubble-free, can be anticorona, there is good heat conductivity, machine between winding and laminated core
Tool and electrical strength are high, and service life is long.
It is air that land rig cools down medium with motor, to ensure the normal operation in the water shortages such as desert and Gobi area.Electricity
Surface annular heat radiation structure uses the double dynamical forcing functions technology of closed ring, rotor to use circulating ventilation knot at motivation casing
Structure ensure that low-pressure high-power motor radiates, reduce permanent magnet operating temperature, and motor running is more reliable, plays more stable.
Using the permasyn morot in the present invention, can accomplish：
A, frequency conversion permanent magnet motor directly drives drilling pump, cancels the intermediate transmissions links such as coupler, gearbox, conveyer belt, carries
High transmission efficiency；
B, motor efficiency is more than country-level Energy Efficiency Standard, and power factor is high；
C, stepless time adjustment is realized；
D, it realizes substantially non-maintaining, saves a large amount of maintenance costs；
E, installation space is saved.
Every technical staff's notice：Although the present invention is described according to above-mentioned specific implementation mode, of the invention
Invention thought be not limited in the invention, any repacking with inventive concept will all be included in this patent protection of the patent right
In range.
Claims (7)
1. a kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump includes motor body and oil-well rig drilling well
Pump, motor body include organic block, the stator core in engine base and rotor, and engine base is equipped with terminal box and cooling wind
One end of machine, engine base is equipped with end cap, and end cap is equipped with the armature spindle being connect with rotor, it is characterised in that：The stator iron
The heart is laminated by fan-shaped stator punching, and the oil-well rig drilling pump is equipped with former pump drive shaft, and the armature spindle is hollow shaft,
Original pump drive shaft is stretched into hollow shaft and is connected and fixed by expansion set.
2. a kind of special frequency conversion permanent magnet synchronous motor of petroleum drilling pump according to claim 1, it is characterised in that：It is described
End cap welded by proximate matter, reinforcing rib is welded on end cap, lightening hole is additionally provided on the end cap.
3. a kind of special frequency conversion permanent magnet synchronous motor of petroleum drilling pump according to claim 1 or 2, it is characterised in that：
The rotor uses permanent magnet excitation, and permanent magnet cooling air duct is arranged, and it is pneumatic to provide cycle by the rotary fan of rotor installation
Power.
4. a kind of special frequency conversion permanent magnet synchronous motor of petroleum drilling pump according to claim 1 or 2, it is characterised in that：
The cooling blower uses centrifugal blower, is mounted at the top of motor.
5. a kind of special frequency conversion permanent magnet synchronous motor of petroleum drilling pump according to claim 1 or 2, it is characterised in that：
The end cap is equipped with flange end cap, which connect with end cap, and the other end is connect with oil-well rig drilling pump.
6. a kind of special frequency conversion permanent magnet synchronous motor of petroleum drilling pump according to claim 1 or 2, it is characterised in that：
The machine base portion is equipped with motor chassis, and oil-well rig drilling pump bottom is equipped with drilling pump chassis, the motor bottom
Frame is connect with drilling pump chassis.
7. a kind of special frequency conversion permanent magnet synchronous motor of petroleum drilling pump according to claim 1 or 2, it is characterised in that：
The rotor uses sintered Nd-Fe-B permanent magnetic material excitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710489983.3A CN108347146A (en) | 2017-06-25 | 2017-06-25 | A kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710489983.3A CN108347146A (en) | 2017-06-25 | 2017-06-25 | A kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108347146A true CN108347146A (en) | 2018-07-31 |
Family
ID=62963087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710489983.3A Pending CN108347146A (en) | 2017-06-25 | 2017-06-25 | A kind of special frequency conversion permanent magnet synchronous motor of oil-well rig drilling pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108347146A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706521A (en) * | 2020-06-28 | 2020-09-25 | 青岛中加特电气股份有限公司 | Be applied to motor and slush pump of slush pump |
| CN113162309A (en) * | 2020-01-23 | 2021-07-23 | 北京明诚技术开发有限公司 | Axle-holding permanent-magnet synchronous variable-frequency motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022237A (en) * | 2007-03-23 | 2007-08-22 | 中国北车集团永济电机厂 | Asynchronous motor for oil field welldrilling |
| CN201601542U (en) * | 2009-12-15 | 2010-10-06 | 鲍文光 | Motor rotor with axial-flow fan blade of electric vehicle |
| CN201679670U (en) * | 2009-08-26 | 2010-12-22 | 南车株洲电力机车有限公司 | Motor direct-drive device of oil rig mud pump |
-
2017
- 2017-06-25 CN CN201710489983.3A patent/CN108347146A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022237A (en) * | 2007-03-23 | 2007-08-22 | 中国北车集团永济电机厂 | Asynchronous motor for oil field welldrilling |
| CN201679670U (en) * | 2009-08-26 | 2010-12-22 | 南车株洲电力机车有限公司 | Motor direct-drive device of oil rig mud pump |
| CN201601542U (en) * | 2009-12-15 | 2010-10-06 | 鲍文光 | Motor rotor with axial-flow fan blade of electric vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113162309A (en) * | 2020-01-23 | 2021-07-23 | 北京明诚技术开发有限公司 | Axle-holding permanent-magnet synchronous variable-frequency motor |
| CN111706521A (en) * | 2020-06-28 | 2020-09-25 | 青岛中加特电气股份有限公司 | Be applied to motor and slush pump of slush pump |
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Application publication date: 20180731 |
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