CN103551261A - Electromagnetic differential mechanism of mud centrifuge - Google Patents
Electromagnetic differential mechanism of mud centrifuge Download PDFInfo
- Publication number
- CN103551261A CN103551261A CN201310547726.2A CN201310547726A CN103551261A CN 103551261 A CN103551261 A CN 103551261A CN 201310547726 A CN201310547726 A CN 201310547726A CN 103551261 A CN103551261 A CN 103551261A
- Authority
- CN
- China
- Prior art keywords
- iron core
- winding
- rotor
- internal rotor
- speed
- 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.)
- Granted
Links
Images
Landscapes
- Centrifugal Separators (AREA)
Abstract
The invention relates to an electromagnetic differential mechanism of a mud centrifuge, which is used in petroleum and natural gas exploration. The electromagnetic differential mechanism mainly comprises an outer rotor and an inner rotor, wherein the outer rotor consists of an outer rotor iron core and a squirrel-cage winding, and a closed-loop circuit is formed by the squirrel-cage winding in a way that copper bars are inserted into the outer rotor iron core and that the two ends of each copper bar are welded on two copper end rings of the squirrel-cage winding; the inner rotor consists of an inner rotor iron core, an inner rotor winding and a rotating shaft, and the inner rotor iron core is also a part of a motor magnetic circuit; the inner rotor winding is a part of the circuit; one end of the rotating shaft is connected with a spiral conveyor by a key, and the other end of the rotating shaft is connected with a velometer; the velometer is connected with a variable-frequency control cabinet, speed is simultaneously fed back to the variable-frequency control cabinet, the rotating speed is changed by the variable-frequency control cabinet through a variable-frequency speed regulating method, and the rotating speed is provided to the spiral conveyor. The electromagnetic differential mechanism has the advantages of low use cost, capable of regulating speed in a stepless way, capability of adapting to severe environmental work conditions, simplicity in operation and simplicity in maintenance.
Description
Technical field
The present invention relates to the electromagnetic differential device for a kind of mud centrifuge of oil, natural gas probing.
Background technology
Mud centrifuge for to mud liquid solid-liquid phase separation, be to realize by spiral and the speed discrepancy between rotary drum of auger conveyor, at the device that is applied at present mud centrifuge differential, be to use differential mechanism.And the differential mechanism major part of using both at home and abroad is at present satellite differential and hydraulic motor differential mechanism.And concerning satellite differential, revolutional slip is to be determined by the gearratio between differential gear, fixing, can not adjust.If adjust, can only change the gear of the different numbers of teeth. therefore adjust revolutional slip and extremely bother, and be step speed regulation.Although and satellite differential has, and bearing capacity is high, volume is little, the advantage of compact conformation, price, the accuracy of manufacture is high, noise is large.And hydraulic motor differential mechanism is that rotary drum and auger conveyor are linked up by hydraulic motor, by changing the rotating speed of hydraulic motor, carry out continuous regulating rotary rate.Though but that hydraulic motor differential mechanism has advantages of volume compact, inertia is little, high, the easy leakage of the accuracy of manufacture, noise are large, should not be for high temperature and low temperature situation.
Summary of the invention
Order of the present invention is in order to overcome the deficiencies in the prior art, and a kind of electromagnetic differential device of mud centrifuge is provided, and the present invention does not need by gear ratio, to realize speed difference as planetary differential, can realize stepless speed regulation according to the situation of mud liquid.
Technical scheme of the present invention is:
The electromagnetic differential device of a kind of mud centrifuge of the present invention, mainly comprises that outer rotor and internal rotor form, and described outer rotor is comprised of outer rotor iron core and squirrel-cage winding, and outer rotor iron core is formed by silicon steel plate stacking, to reduce eddy current and magnetic hystersis loss; Squirrel-cage winding is to insert copper bar at outer rotor iron core, whole copper bars two ends are welded on two squirrel-cage winding copper end ring, forms closed-loop path; Described electromagnetic differential device shell is connected with rotary drum, provide rotating speed for outer rotor, and the big or small direction of speed is consistent by rotary drum.
Described internal rotor consists of internal rotor iron core, internal rotor winding and rotating shaft, internal rotor iron core is also a part for motor magnetic circuit, internal rotor iron core is formed by internal rotor silicon steel plate stacking, in the cylindrical of internal rotor iron core, be processed with rotor slot, in rotor slot, lay internal rotor winding, after internal rotor silicon steel plate stacking, form an integral body, be fixed in rotating shaft; Internal rotor winding is a part for circuit, by many coils, is formed by connecting, and each coil has two effective edges, is placed in rotor slot respectively.Rotating shaft one end is connected with auger conveyor and is connected by key, and the other end is connected with velometer; Velometer is connected with frequency-conversion control cabinet, and speed is fed back to frequency-conversion control cabinet simultaneously, then comes to change rotating speed by frequency-conversion control cabinet by the method for frequency control, and rotating speed is offered to auger conveyor.
The invention has the beneficial effects as follows: use cost of the present invention is low, and can carry out stepless speed regulation, and can tackle the severe condition of work of various environment, be operating as easyly, safeguard also very simple.
Accompanying drawing explanation:
Fig. 1 is the structural representation of the electromagnetic differential device of a kind of mud centrifuge of the present invention;
Fig. 2 is electromagnetic differential device structural representation of the present invention;
Fig. 3 is mouse cage winding construction schematic diagram of the present invention.
In figure: 1. feed pipe, 2. belt pulley, 3. auger conveyor, 4. rotary drum, 5. overflow plate, 6. rotating shaft, 7. electromagnetic differential device, 8. asynchronous machine, 9. frequency-conversion control cabinet, 10. electromagnetic differential device shell, 11. outer rotor iron cores, 12. squirrel-cage windings, 13. internal rotor iron cores, 14. internal rotor windings, 15. velometers, 16. copper bars, 17. squirrel-cage winding copper end ring, 18. rotor slot, 19. internal rotor silicon steel sheets, 20. outer rotors, 21. internal rotors.
The specific embodiment:
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
As shown in accompanying drawing 1, Fig. 2, Fig. 3, the electromagnetic differential device of a kind of mud centrifuge of the present invention, mainly comprise that outer rotor 20 and internal rotor 21 form, described outer rotor 20 is comprised of outer rotor iron core 11 and squirrel-cage winding 12, outer rotor iron core 11 is formed by silicon steel plate stacking, to reduce eddy current and magnetic hystersis loss; Squirrel-cage winding 12 is to insert copper bar 16 at outer rotor iron core 11, whole copper bars 16 two ends are welded on two squirrel-cage winding copper end ring 17, forms closed-loop path; Described electromagnetic differential device shell 10 is connected with rotary drum 4, provide rotating speed for outer rotor 20, and the big or small direction of speed is consistent by rotary drum 4.
Described internal rotor 21 consists of internal rotor iron core 13, internal rotor winding 14 and rotating shaft 6, internal rotor iron core 13 is also a part for motor magnetic circuit, internal rotor iron core 13 is overrided to form by internal rotor silicon steel sheet 19, in the cylindrical of internal rotor iron core 13, be processed with rotor slot 18, in rotor slot 18, lay internal rotor winding 14, internal rotor silicon steel sheet 19 laminates integral body of rear formation, is fixed in rotating shaft 6; Internal rotor winding 14 is parts of circuit, by many coils, is formed by connecting, and each coil has two effective edges, is placed on respectively in rotor slot 18.Rotating shaft 6 one end are connected with auger conveyor 3 and are connected by key, the other end is connected with velometer 15, velometer 15 is connected with frequency-conversion control cabinet 9, and speed is fed back to frequency-conversion control cabinet 9 simultaneously, by the method for frequency control, come to change rotating speed by frequency-conversion control cabinet 9 again, and rotating speed is offered to auger conveyor 3.
As shown in Figure 1, the present invention applies among oil drilling, and mud liquid is inputted from feed pipe 1, opens asynchronous machine 8 and electromagnetic differential device 7 simultaneously.Asynchronous machine 8 is worked and is driven belt pulley 2 work, and the now rotation of belt pulley 2 will drive rotary drum 4 work.And in electromagnetic differential device 7, due to it is switched on, the interior meeting of internal rotor winding 14 produces rotating excitation field by electric current and in space, this magnetic field is around the cylindrical tangential direction rotation of internal rotor.
In internal rotor 21 energisings, outer rotor 20 also produces and the rotating speed of rotary drum 4 with speed by electromagnetic differential device shell 10 and being connected of rotary drum 4 overflow plates 5.On the squirrel-cage winding 12 of outer rotor 20, by copper bar 16 and squirrel-cage winding copper end ring 17, many closed loops have been formed.When outer rotor 20 rotation, the space magnetic field that internal rotor 21 produces, by these loop cuttings, produces induced electromotive force and induced-current.Induced-current and rotating excitation field interact, and will produce electromagnetic force, and promote internal rotor 21 rotations.Between internal rotor 21 and auger conveyor 3, by rotating shaft 6, be connected, and drive the rotation of auger conveyor 3.
Because internal rotor 21 is that the electromagnetic force that produced by cutting magnetic induction line promotes rotation, if the rotating speed of internal rotor 21 and outer rotor 20 equate, squirrel-cage winding 12 does not have relative motion with rotating excitation field, just cannot cutting magnetic induction line, just can not produce electromagnetic force.Therefore between internal rotor 21 and outer rotor 20, must have speed discrepancy, and this speed discrepancy will determine the size of the separation factor of centrifuge.
For the mud liquid under different situations, need different speed discrepancies, therefore can the power frequency of the input of electromagnetic differential device 7 and asynchronous machine 8 be regulated by the method for frequency-conversion control cabinet 9 use frequency controls, suitable rotating speed and speed discrepancy are set.
Claims (1)
1. the electromagnetic differential device of a mud centrifuge, mainly comprise that outer rotor (20) and internal rotor (21) form, it is characterized in that, described outer rotor (20) is comprised of outer rotor iron core (11) and squirrel-cage winding (12), squirrel-cage winding (12) is to insert copper bar (16) at outer rotor iron core (11), again whole copper bars (16) two ends are welded in to two squirrel-cage winding copper end ring (17) upper, form closed-loop path; Described electromagnetic differential device shell (10) is connected with rotary drum (4), by rotary drum (4), for outer rotor (20), provides rotating speed, and the big or small direction of speed is consistent; Described internal rotor (21) consists of internal rotor iron core (13), internal rotor winding (14) and rotating shaft (6), is processed with rotor slot (18) in the cylindrical of internal rotor iron core (13), lays internal rotor winding (14) in rotor slot (18); Internal rotor silicon steel sheet (19) laminates integral body of rear formation, is fixed in rotating shaft (6); Described internal rotor winding (14) is a part for circuit, by many coils, is formed by connecting, and each coil has two effective edges, is placed on respectively in rotor slot (18); Rotating shaft (6) one end is connected with auger conveyor (3) and is connected by key, the other end is connected with velometer (15), velometer (15) is connected with frequency-conversion control cabinet (9), and speed is fed back to frequency-conversion control cabinet (9) simultaneously, by the method for frequency control, come to change rotating speed by frequency-conversion control cabinet (9) again, and rotating speed is offered to auger conveyor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547726.2A CN103551261B (en) | 2013-11-07 | 2013-11-07 | Electromagnetic differential mechanism of mud centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310547726.2A CN103551261B (en) | 2013-11-07 | 2013-11-07 | Electromagnetic differential mechanism of mud centrifuge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103551261A true CN103551261A (en) | 2014-02-05 |
| CN103551261B CN103551261B (en) | 2015-07-15 |
Family
ID=50005715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310547726.2A Expired - Fee Related CN103551261B (en) | 2013-11-07 | 2013-11-07 | Electromagnetic differential mechanism of mud centrifuge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103551261B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2093640A (en) * | 1981-01-13 | 1982-09-02 | Browning Roy William | A variable speed drive unit |
| JPH10128158A (en) * | 1996-11-01 | 1998-05-19 | Trinity Ind Corp | Centrifugal separator |
| CN1355113A (en) * | 2000-11-26 | 2002-06-26 | 秦功修 | Electromagnetically damping stepless speed variator and its manufacture method |
| CN2854210Y (en) * | 2005-12-07 | 2007-01-03 | 甘大才 | Differential mechanism of horizontal sedimentation high-speed centrifuge |
| CN202034885U (en) * | 2011-03-30 | 2011-11-09 | 北京龙磁众诚传动设备有限公司 | Non-contact permanent-magnetic speed regulator |
-
2013
- 2013-11-07 CN CN201310547726.2A patent/CN103551261B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2093640A (en) * | 1981-01-13 | 1982-09-02 | Browning Roy William | A variable speed drive unit |
| JPH10128158A (en) * | 1996-11-01 | 1998-05-19 | Trinity Ind Corp | Centrifugal separator |
| CN1355113A (en) * | 2000-11-26 | 2002-06-26 | 秦功修 | Electromagnetically damping stepless speed variator and its manufacture method |
| CN2854210Y (en) * | 2005-12-07 | 2007-01-03 | 甘大才 | Differential mechanism of horizontal sedimentation high-speed centrifuge |
| CN202034885U (en) * | 2011-03-30 | 2011-11-09 | 北京龙磁众诚传动设备有限公司 | Non-contact permanent-magnetic speed regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103551261B (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2864017A (en) | Inducto-motive power apparatus with a plurality of rotors | |
| EP2538529B1 (en) | An electrical machine with contra-rotating rotors | |
| CN206219842U (en) | Washing machine | |
| CN100544170C (en) | Mixing exciter panel type eddy flow drive speed regulating device | |
| CN101188374A (en) | Dual rotor electromagnetic machine control | |
| CN105915021B (en) | A kind of brushless type composite excitation permanent magnet eddy speed regulating device | |
| CN101645644B (en) | Permanent magnetic compound type asynchronous coupling | |
| CN104539134A (en) | Radial-clearance-adjustable permanent magnet speed regulation device | |
| CN202508732U (en) | Synchronous gear-free traction machine for elevator | |
| CN106521882B (en) | Washing machine | |
| CN109347286A (en) | A kind of air gap monopole excitation magnetic potential synchronous motor | |
| CN102556809A (en) | Synchronous gearless traction machine for elevator | |
| WO2012116572A1 (en) | Combined torque asynchronous variable-speed motor | |
| CN205544649U (en) | Electric drill utensil drive in pit is with few coil permanent magnet synchronous motor of overlength iron core | |
| CN103551261B (en) | Electromagnetic differential mechanism of mud centrifuge | |
| EP3154158A1 (en) | Hysteresis motor-brake | |
| CN103929027B (en) | Integrated type switched-reluctance type electromagnetic varispeed motor | |
| CN105703585A (en) | Winding type brushless coupling transmission device | |
| CN101771309B (en) | Low-speed high-torque direct driving composite motor based on magnetic gear | |
| US10763736B2 (en) | Long distance power transmission with magnetic gearing | |
| CN204244053U (en) | Radial clearance adjustable type permanent-magnet speed governor | |
| CN106533002B (en) | Washing machine | |
| CN106505815B (en) | Motor | |
| CN206219840U (en) | Washing machine | |
| CN104162693B (en) | A kind of deep hole drilling and boring machine with electromagnetic slip clutches |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20161107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |