CN104393697A - Dry-type submersible motor with split teeth rotor - Google Patents
Dry-type submersible motor with split teeth rotor Download PDFInfo
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- CN104393697A CN104393697A CN201410671392.4A CN201410671392A CN104393697A CN 104393697 A CN104393697 A CN 104393697A CN 201410671392 A CN201410671392 A CN 201410671392A CN 104393697 A CN104393697 A CN 104393697A
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Abstract
The invention relates to a dry-type submersible motor with split teeth rotor. The dry-type submersible motor with split teeth rotor comprises a shell, a stator, a rotor and a rotating shaft; the rotor is fixedly arranged on the rotating shaft through an auxiliary iron; the rotor is a half-opening slot type rotor; split teeth are arranged between adjacent punching slots; the middle portion of each split tooth is axially provided with a half-opening miniature slot to divide the split tooth into two portions, thereby forming a first split tooth and a second split tooth. The slot width of the punching slot is (i) b (/i) 02, the slot depth is (i) h (/i) 2; the slot width b of the miniature slot is 20% - 50% of (i) b (/i) 02, the slot depth h thereof is 50% -80% of (i) h (/i) 2. By dividing the rotor tooth into two portions to form the split teeth, the heat dissipation area of the rotor is increased, the temperature rise of the end portion of the motor is reduced by about 2K, the vortex path is reduced, thereby reducing the additional loss of the motor and increasing the efficiency of the motor by about 1 percent; in condition that the motor volume is not increased, the output power is increased, and then the power density of the motor is increased.
Description
Technical field
The invention belongs to submersible motor technical field, specifically relate to a kind of to there is a point dry-type submersible motor for carnassial tooth rotor.
Background technology
Submersible motor is mainly used in large hydraulic engineering, urban water supply and drainage system and the great occasion such as mine drainage, rescue and relief work, can be divided into wet type, dry type, filling type and protected type etc. by structure.The rotor punching of submersible motor adopts closed slot or semi-enclosed slot pattern usually, and due to Wet submersible motor inner filling water, for weakening water frictional dissipation, the rotor of Wet submersible motor adopts closed slot usually; And dry-type submersible motor inside is full of air, the rotor of conventional dry submersible motor normally adopts semi-enclosed slot, the grooved of rotor is elongate rectangular, and such grooved is less than the rotor leakage reactance of closed slot grooved, therefore can improve the economic and technical norms such as power factor and torque.But because dry-type submersible motor adopts elongated closed slot, the supplementary load loss of dry-type submersible motor are comparatively large, and are unfavorable for heat radiation, thus affect efficiency and the reliability of motor; Along with the single-machine capacity of dry-type submersible motor improves constantly, the increasing material adopting high electromagnetic load and heat load in the design of dry-type submersible motor, loss when causing dry-type submersible motor to run increases, how to reduce the supplementary load loss of dry-type submersible motor, improve the heat dissipation environment of dry-type submersible motor, and then improve efficiency and the reliability of dry-type submersible motor, be the target that pit submersible motor design and controllers are made great efforts always.
The method of current reduction supplementary load loss is mainly by adopting closed slot rotor, as a kind of rotor punching, its version adopts punching groove of remaining silent, and inner periphery is evenly equipped with louvre, but there is following shortcoming in this technical scheme: 1. this technical scheme adopts closed slot punching, add the groove leakage reactance of rotor, the power factor of motor is reduced; 2. this technical scheme is by the uniform louvre of inner periphery, increases the volume of rotor, reduces the power density of motor.
Summary of the invention
In order to solve the weak point that above-mentioned prior art exists, the invention provides and a kind of there is a point dry-type submersible motor for carnassial tooth rotor.
Rotor tooth is divided into two and forms a point carnassial tooth by the present invention, thus shortens rotor eddy current path, increases area of dissipation, to reducing motor eddy current loss and reducing electric machine temperature rise, and then effectively improves efficiency and the reliability of dry-type submersible motor.
Concrete architecture advances technical scheme is as follows:
Have a point dry-type submersible motor for carnassial tooth rotor and comprise housing, stator, rotor and rotating shaft, rotor is located in rotating shaft by auxiliary ferropexy, and described rotor is semi-closed port slot type rotor, is a point carnassial tooth between adjacent punching groove; The middle part of each point of carnassial tooth offers half-closed micro-groove vertically, and carnassial tooth will be divided to be divided into two, and forms the first division tooth and the second point of carnassial tooth that are symmetrical in micro-groove.
The groove width of described punching groove is
b 02, groove depth is
h 2; The groove width b of micro-groove is 20%-50%
b 02, groove depth h is 50%-80%
h 2.
Compared with the prior art, Advantageous Effects of the present invention is:
The present invention has micro-groove on the rotor tooth of semi-enclosed slot, adopts semi-enclosed slot rotor, can reduce the groove leakage reactance of motor, and then improves the power factor of motor; Rotor tooth is divided into two and forms a point carnassial tooth, add rotor area of dissipation, reduce the motor temperature rise of end windings and parts and be about 2K, reduce eddy current path, the supplementary load loss of motor are reduced, thus improves the efficiency about 1 percentage point of motor, when ensureing that motor volume does not increase, increase power output, and then increase the power density of motor.
Accompanying drawing explanation
Fig. 1 is dry-type submersible motor structural representation of the present invention.
Fig. 2 is rotor core structure schematic diagram.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the partial enlarged drawing of Fig. 3.
Sequence number in upper figure: 1 housing, 2 stators, 3 rotors, 4 auxiliary iron, 5 rotating shafts, 31 first division teeth, 32 second points of carnassial tooths, 33 punching grooves, 34 micro-grooves.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.
Embodiment 1
See Fig. 1, YQGN990-16 (6kV) dry-type submersible motor comprises housing 1, stator 2, rotor 3 and rotating shaft 5, and rotor 3 is fixedly installed in rotating shaft 5 by auxiliary iron 4.See Fig. 2 and Fig. 3, rotor 3 is semi-closed port slot type rotor, the length of rotor core
lfor 480mm, rotor diameter 770mm, rotor internal diameter 560mm, rotor offers 120 punching grooves 33, the groove width of punching groove 33
b 02for 2mm, groove depth
h 2for 50mm.Be a point carnassial tooth between adjacent punching groove 33, see Fig. 3 and Fig. 4, the middle part of each point of carnassial tooth offers half-closed micro-groove 34 vertically, and carnassial tooth will be divided to be divided into two, and forms the first division tooth 31 and the second point of carnassial tooth 32 that are symmetrical in micro-groove.Micro-groove 34 is rectangular channel, and is parallel to punching groove 33; The groove width of micro-groove 34 is 0.4mm(
b=20%-
b 02), groove depth is 25mm(
h=50%
h 2); The groove number of micro-groove is 120.
Through experimental analysis, the improved efficiency of the present embodiment dry-type submersible motor 0.5%, the temperature rise of End winding reduces 1.4K.
Embodiment 2
The dry-type submersible motor of YQGN990-16 (6kV) point carnassial tooth, the length of rotor core
lfor 480mm, rotor diameter 770mm, rotor internal diameter 560mm, rotor 3 offers 120 punching grooves 33, the groove width of punching groove 33
b 02for 2mm, groove depth
h 2for 50mm.The other the same as in Example 1.
The groove width of micro-groove 34 is 0.7mm(
b=35%-
b 02), groove depth is 32.5mm(
h=65%
h 2); The groove number of micro-groove is 120.
Through experimental analysis, the improved efficiency of the present embodiment dry-type submersible motor 1.1%, the temperature rise of End winding reduces 2K.
Embodiment 3
The dry-type submersible motor of YQGN990-16 (6kV) point carnassial tooth, the length of rotor core
lfor 480mm, rotor diameter 770mm, rotor internal diameter 560mm, rotor 3 offers 120 punching grooves 33, the groove width of punching groove 33
b 02for 2mm, groove depth
h 2for 50mm.The other the same as in Example 1;
The groove width of micro-groove 34 is 1mm(
b=50%-
b 02), groove depth is 40mm(
h=80%
h 2); The groove number of micro-groove 34 is 120.
Through experimental analysis, the improved efficiency of the present embodiment dry-type submersible motor 0.9%, the temperature rise of End winding reduces 1.7K.
Claims (3)
1. there is a point dry-type submersible motor for carnassial tooth rotor, comprise housing, stator, rotor and rotating shaft, rotor is located in rotating shaft by auxiliary ferropexy, described rotor is semi-closed port slot type rotor, it is a point carnassial tooth between adjacent punching groove, it is characterized in that: the middle part of each point of carnassial tooth offers micro-groove vertically, carnassial tooth will be divided to be divided into two, form the first division tooth and the second point of carnassial tooth that are symmetrical in micro-groove.
2. according to claim 1 have a point dry-type submersible motor for carnassial tooth rotor, it is characterized in that: described micro-groove is rectangular channel, and be parallel to punching groove.
3. according to claim 1 and 2 have a point dry-type submersible motor for carnassial tooth rotor, it is characterized in that: the groove width of described punching groove is
b 02, groove depth is
h 2; The groove width b of micro-groove is 20%-50%
b 02, groove depth h is 50%-80%
h 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671392.4A CN104393697A (en) | 2014-11-21 | 2014-11-21 | Dry-type submersible motor with split teeth rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671392.4A CN104393697A (en) | 2014-11-21 | 2014-11-21 | Dry-type submersible motor with split teeth rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104393697A true CN104393697A (en) | 2015-03-04 |
Family
ID=52611550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410671392.4A Pending CN104393697A (en) | 2014-11-21 | 2014-11-21 | Dry-type submersible motor with split teeth rotor |
Country Status (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6455023A (en) * | 1987-08-21 | 1989-03-02 | Aisin Seiki | Rotary machine |
| JPH0993884A (en) * | 1995-09-25 | 1997-04-04 | Hitachi Ltd | Induction motor and rotor thereof |
| CN101034822A (en) * | 2007-01-24 | 2007-09-12 | 哈尔滨工业大学 | Induction motor rotor with the reduced crosscurrent and leakage magnetic flux function |
| KR100885735B1 (en) * | 2008-09-18 | 2009-02-26 | 주식회사 다텍 | Core plate for eletric generator rotor improved in generation efficiency |
| CN204190515U (en) * | 2014-11-21 | 2015-03-04 | 合肥恒大江海泵业股份有限公司 | There is a point dry-type submersible motor for carnassial tooth rotor |
-
2014
- 2014-11-21 CN CN201410671392.4A patent/CN104393697A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6455023A (en) * | 1987-08-21 | 1989-03-02 | Aisin Seiki | Rotary machine |
| JPH0993884A (en) * | 1995-09-25 | 1997-04-04 | Hitachi Ltd | Induction motor and rotor thereof |
| CN101034822A (en) * | 2007-01-24 | 2007-09-12 | 哈尔滨工业大学 | Induction motor rotor with the reduced crosscurrent and leakage magnetic flux function |
| KR100885735B1 (en) * | 2008-09-18 | 2009-02-26 | 주식회사 다텍 | Core plate for eletric generator rotor improved in generation efficiency |
| CN204190515U (en) * | 2014-11-21 | 2015-03-04 | 合肥恒大江海泵业股份有限公司 | There is a point dry-type submersible motor for carnassial tooth rotor |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150304 |
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| RJ01 | Rejection of invention patent application after publication |