CN103551261B - Electromagnetic differential mechanism of mud centrifuge - Google Patents
Electromagnetic differential mechanism of mud centrifuge Download PDFInfo
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- CN103551261B CN103551261B CN201310547726.2A CN201310547726A CN103551261B CN 103551261 B CN103551261 B CN 103551261B CN 201310547726 A CN201310547726 A CN 201310547726A CN 103551261 B CN103551261 B CN 103551261B
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- iron core
- rotor
- winding
- internal rotor
- differential mechanism
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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 mechanism of a kind of mud centrifuge for oil, natural gas probing.
Background technology
Mud centrifuge be used for slurry liquid solid-liquid phase separation, being realized by the speed discrepancy between the spiral of auger conveyor and rotary drum, is use differential mechanism at the device being applied to mud centrifuge differential at present.And the differential mechanism major part used both at home and abroad is at present satellite differential and hydraulic motor differential mechanism.And concerning satellite differential, revolutional slip be by differential gear between gearratio determine, fixing, can not adjust.To adjustment, the gear of the different number of teeth can only be changed. 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 are high, noise is large.And hydraulic motor differential mechanism is that rotary drum and auger conveyor are linked up by hydraulic motor, carry out continuous regulating rotary rate by the rotating speed changing hydraulic motor.But though hydraulic motor differential mechanism has volume compact, advantage that inertia is little, high, the easy leakage of the accuracy of manufacture, noise are large, should not be used for high temperature and low temperature situation.
Summary of the invention
Order of the present invention is to overcome the deficiencies in the prior art, provides a kind of Electromagnetic differential mechanism of mud centrifuge, and the present invention does not need to realize speed difference by gear ratio as planetary differential, can realize stepless speed regulation according to the situation of slurry liquid.
Technical scheme of the present invention is:
The Electromagnetic differential mechanism of a kind of mud centrifuge of the present invention, form primarily of outer rotor and internal rotor, described outer rotor is made up 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 inserted in outer rotor iron core by copper bar, and be welded in respectively at whole copper bar two ends on two squirrel-cage winding copper end ring and form, formation closed-loop path; Described Electromagnetic differential mechanism shell is connected with rotary drum, and by rotary drum for outer rotor provides rotating speed, and the size direction of speed is consistent.
Described internal rotor is made up 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, rotor slot is processed with in the cylindrical of internal rotor iron core, internal rotor winding is laid in rotor slot, form an entirety after internal rotor silicon steel plate stacking, be fixed in rotating shaft; Internal rotor winding is a part for circuit, is formed by connecting by many coils, and each coil has two effective edges, is placed on respectively in rotor slot.Rotating shaft one end is connected by key and is connected with auger conveyor, and the other end is connected with velometer; Velometer is connected with frequency-conversion control cabinet, and simultaneously by velocity feedback to frequency-conversion control cabinet, then change rotating speed by the method for frequency control by frequency-conversion control cabinet, and rotating speed be supplied to auger conveyor.
The invention has the beneficial effects as follows: use cost of the present invention is low, and can stepless speed regulation be carried out, and the condition of work of various bad environments can be tackled, be operating as easy, safeguard also very simple.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the Electromagnetic differential mechanism of a kind of mud centrifuge of the present invention;
Fig. 2 is Electromagnetic differential mechanism 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 mechanism, 8. asynchronous machine, 9. frequency-conversion control cabinet, 10. Electromagnetic differential mechanism 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.
Detailed description of the invention:
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 mechanism of a kind of mud centrifuge of the present invention, form primarily of outer rotor 20 and internal rotor 21, described outer rotor 20 is made up 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 inserted in outer rotor iron core 11 by copper bar 16, and be welded in respectively at whole copper bar 16 two ends on two squirrel-cage winding copper end ring 17 and form, and forms closed-loop path; Described Electromagnetic differential mechanism shell 10 is connected with rotary drum 4, and by rotary drum 4 for outer rotor 20 provides rotating speed, and the size direction of speed is consistent.
Described internal rotor 21 is made up 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, rotor slot 18 is processed with in the cylindrical of internal rotor iron core 13, internal rotor winding 14 is laid in rotor slot 18, internal rotor silicon steel sheet 19 laminates rear formation entirety, is fixed in rotating shaft 6; Internal rotor winding 14 is parts of circuit, is formed by connecting by many coils, and each coil has two effective edges, is placed on respectively in rotor slot 18.Rotating shaft 6 one end is connected by key and is connected with auger conveyor 3, the other end is connected with velometer 15, velometer 15 is connected with frequency-conversion control cabinet 9, and simultaneously by velocity feedback to frequency-conversion control cabinet 9, change rotating speed by the method for frequency control by frequency-conversion control cabinet 9 again, and rotating speed is supplied to auger conveyor 3.
As shown in Figure 1, the present invention applies among oil drilling, slurry liquid is inputted from feed pipe 1, opens asynchronous machine 8 and Electromagnetic differential mechanism 7 simultaneously.Asynchronous machine 8 works and drives belt pulley 2 to work, and the now rotation of belt pulley 2 will drive rotary drum 4 to work.And in Electromagnetic differential mechanism 7, due to its energising, understand by electric current in internal rotor winding 14 and produce rotating excitation field in space, this magnetic field rotates around the cylindrical tangential direction of internal rotor.
While internal rotor 21 is energized, outer rotor 20 is also produced and the rotating speed of rotary drum 4 with speed by Electromagnetic differential mechanism shell 10 and the connection of rotary drum 4 overflow plate 5.On the squirrel-cage winding 12 of outer rotor 20, constitute many loops closed by copper bar 16 and squirrel-cage winding copper end ring 17.When outer rotor 20 rotates, 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 and rotate.Be connected by rotating shaft 6 between internal rotor 21 with auger conveyor 3, 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 to rotate, if the rotating speed of internal rotor 21 and outer rotor 20 is equal, squirrel-cage winding 12 and rotating excitation field do not have relative motion, just cannot cutting magnetic induction line, just can not produce electromagnetic force.Therefore speed discrepancy must be had between internal rotor 21 and outer rotor 20, and this speed discrepancy will decide the size of the separation factor of centrifuge.
Different speed discrepancies is then needed for the slurry liquid under different situations, therefore can be regulated by frequency-conversion control cabinet 9 method of the frequency control power frequency to the input of Electromagnetic differential mechanism 7 and asynchronous machine 8, suitable rotating speed and speed discrepancy are set.
Claims (1)
1. the Electromagnetic differential mechanism of a mud centrifuge, form primarily of outer rotor (20) and internal rotor (21), it is characterized in that, described outer rotor (20) is made up of outer rotor iron core (11) and squirrel-cage winding (12), squirrel-cage winding (12) inserts in outer rotor iron core (11) by copper bar (16), and whole copper bar (16) two ends are welded in respectively on two squirrel-cage winding copper end ring (17) and form, form closed-loop path; Described Electromagnetic differential mechanism shell (10) is connected with rotary drum (4), and by rotary drum (4) for outer rotor (20) provides rotating speed, and the size direction of speed is consistent; Described internal rotor (21) is made up of internal rotor iron core (13), internal rotor winding (14) and rotating shaft (6), be processed with rotor slot (18) in the cylindrical of internal rotor iron core (13), in rotor slot (18), lay internal rotor winding (14); Internal rotor silicon steel sheet (19) laminates rear formation entirety, is fixed in rotating shaft (6); Described internal rotor winding (14) is a part for circuit, is formed by connecting by many coils, and each coil has two effective edges, is placed in rotor slot (18) respectively; Rotating shaft (6) one end is connected by key and is connected with auger conveyor (3), the other end is connected with velometer (15), velometer (15) is connected with frequency-conversion control cabinet (9), and simultaneously by velocity feedback to frequency-conversion control cabinet (9), come to change rotating speed by frequency-conversion control cabinet (9) by the method for frequency control again, and rotating speed is supplied 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 CN103551261A (en) | 2014-02-05 |
| CN103551261B true CN103551261B (en) | 2015-07-15 |
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| 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 |
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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 |
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|---|---|
| CN103551261A (en) | 2014-02-05 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20161107 |