CN104467248B - Submersible motor with improved end frames - Google Patents
Submersible motor with improved end frames Download PDFInfo
- Publication number
- CN104467248B CN104467248B CN201410702530.0A CN201410702530A CN104467248B CN 104467248 B CN104467248 B CN 104467248B CN 201410702530 A CN201410702530 A CN 201410702530A CN 104467248 B CN104467248 B CN 104467248B
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- CN
- China
- Prior art keywords
- submersible motor
- stator
- frame
- frames
- casing
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Links
- 238000004804 winding Methods 0.000 claims abstract description 11
- 238000009826 distribution Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a submersible motor with improved end frames. The submersible motor comprises a casing, a stator, a rotor and a rotating shaft, the stator is fixed to the casing, the rotor is fixed to the rotating shaft, the cylindrical frames are arranged on the portions, corresponding to the two axial ends of an iron core of the stator, of the casing respectively, and end windings are arranged in the portions, on the outer sides of the two axial ends of the iron core of the stator, of the casing respectively; the inner circumferences, adjacent to the axial end face of the iron core of the stator, of the frames are each provided with two or more annular grooves. On one hand, distribution of an end leakage magnetic field of the submersible motor on the inner surfaces of the frames is changed, eddy current paths of the frames are shortened, and eddy current losses generated by the end leakage magnetic field in the frames are reduced; on the other hand, the heat dissipation area is enlarged, end temperature rise of the submersible motor can be reduced, and the running reliability of the submersible motor is improved.
Description
Technical field
The invention belongs to submersible motor technical field, be specifically related to a kind of submersible motor improving end frame.
Background technology
Complexity due to submersible motor stator End winding, its brow leakage field is sufficiently complex in the distribution of end regions, the particularly leading-out terminal of End winding is relatively big near the position stray field of frame, and stray field can produce bigger eddy-current loss at the jamb surface of conduction.At present, the method for reduction eddy-current loss is mainly set about from reduced harmonic magnetic field and shortening eddy current path, analyzes the harmonic wave distribution character in magnetic field and calculates the eddy current of sensing in conductive member, the path of shortening eddy current of trying one's best on the premise of ensureing mechanical performance index.But owing to submersible motor brow leakage field distribution is sufficiently complex, it is difficult to realize reducing the purpose of eddy-current loss by weakening the harmonic field of jamb surface.The end edge mount structure of submersible motor is not quite reasonable at present, i.e. frame is equal thickness distribution along the axial and circumferential directions, and now submersible motor brow leakage field can produce relatively maelstrom in sensing at the frame of trim ring end, and then produces a large amount of eddy-current loss.Along with submersible motor develops to the direction of high-power, its brow leakage field is increasing, therefore, how to reduce submersible motor end eddy-current loss, particularly reduce the eddy-current loss in the conductive member of the bigger position of leakage field become manufacture and design high-performance submersible motor in the urgent need to.But, the most also there is no the open report of related art scheme.
Summary of the invention
For avoiding the weak point existing for above-mentioned prior art, the present invention provides a kind of submersible motor improving end frame.
The present invention, by along the circumferential direction slotting frame at the end plunger position of submersible motor stator limit, shortens eddy current path, increasing heat radiation area, and then effectively reduces end eddy-current loss and the temperature rise of submersible motor；
Concrete technical solution is as follows:
The submersible motor improving end frame includes casing, stator, rotor and rotating shaft, described stator is fixed in casing, rotor is fixed in rotating shaft, it is respectively equipped with the frame of cylindrical shape in the casing corresponding with the axial two ends of stator core, in the casing outside the axial two ends of stator core, is respectively equipped with End winding；It is improved by: on the inner periphery of the described frame adjacent with the axial end of stator core, be laid with the annular groove of more than two.
The cross section of described annular groove is rectangle, and groove depth h of annular groove is 30%～40%H, and groove width b is 1.0～1.2h, wherein H be spacing c between the thickness of frame, and adjacent annular groove be 1.0～1.2h.
The groove number N of described annular groove is 4～6, between annular groove and the axial end of stator core adjacent with the axial end of stator core and distance is 20～30mm.
Compared with the prior art, the Advantageous Effects of the present invention is embodied in following aspect:
1. the present invention uses at the frame near the position of submersible motor stator limit end iron core fluting, change the brow leakage field distribution at frame inner surface of submersible motor, shorten frame eddy current path, reduce the eddy-current loss that brow leakage field produces in frame, thus improve the efficiency about 0.5 percentage point of motor, in the case of ensureing that motor volume does not increases, increase output, and then increase the power density of motor；
2. the present invention uses at the frame near the position of submersible motor stator limit end iron core fluting, increases area of dissipation, can reduce the temperature rise of end windings and parts about 1K of submersible motor, and then improve the operational reliability of submersible motor.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is fluting border structure schematic diagram.
Fig. 4 is the monolateral axial sectional drawing of fluting frame.
Sequence number in upper figure: 1 casing；2 stators；3 rotors；4 frames；5 End winding；6 rotating shafts；41 annular grooves.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by embodiment, the present invention is further described.
Embodiment 1
Seeing Fig. 1 and Fig. 2, with mining INCREASEDSAFETY submersible pump motor YBQ2800/4-S (10000) submersible motor as embodiment, the relevant parameter of submersible motor is as follows: stator core external diameter is 850mm, and seal ring thickness H is 10mm.
This submersible motor includes casing 1, stator 2, rotor 3 and rotating shaft 6, stator 2 is fixed in casing 1, rotor 3 is fixed in rotating shaft 6, it is installed with circular frame 4 in the casing 1 corresponding with the axial two ends of stator core respectively, in the casing 1 outside the axial two ends of stator core, is separately installed with End winding 5.Seeing Fig. 3 and Fig. 4, on the inner periphery of the frame adjacent with the axial end of stator core, uniform four annular grooves 41, i.e. groove number N of having are 4.
The cross section of annular groove 41 is rectangle, and groove depth h is 4mm, and groove width b is 4.8mm, and spacing c between adjacent annular groove is 4.8mm.
Between annular groove 41 and the axial end of stator core adjacent with the axial end of stator core and distance is 30mm.
Through experimental analysis, the improved efficiency of the present embodiment dry-type submersible motor 0.4%, the temperature rise of End winding 5 reduces 0.9K.
Embodiment 2
With mining INCREASEDSAFETY submersible pump motor YBQ2800/4-S (10000) submersible motor as embodiment, the relevant parameter of submersible motor is as follows: stator core external diameter is 850mm, and seal ring thickness H is 10mm.
On the inner periphery of the frame adjacent with stator core end face, uniform five annular grooves 41, i.e. groove number N of having are 5.Between annular groove and the axial end of stator core adjacent with the axial end of stator core and distance is 25mm.
The cross section of annular groove 41 is rectangle, and groove depth h is 3.5mm, and groove width b is 3.8mm, and spacing c between adjacent annular groove is 3.8mm.
Through experimental analysis, the improved efficiency of the present embodiment dry-type submersible motor 0.5%, the temperature rise of End winding reduces 1.1K.
Embodiment 3
With mining INCREASEDSAFETY submersible pump motor YBQ2800/4-S (10000) submersible motor as embodiment, the relevant parameter of submersible motor is as follows: stator core external diameter is 850mm, and seal ring thickness is 10mm.
On the inner periphery of the frame adjacent with stator core end face, uniform six annular grooves 41, i.e. groove number N of having are 6.Between annular groove and the axial end of stator core adjacent with the axial end of stator core and distance is 20mm.
The cross section of annular groove 41 is rectangle, and groove depth h is 3.0mm, and groove width b is 3.0mm, and spacing c between adjacent annular groove is 3.0mm.
Through experimental analysis, the improved efficiency of the present embodiment dry-type submersible motor 0.5%, the temperature rise of End winding reduces 1.2K.
Claims (3)
1. improve the submersible motor of end frame, including casing, stator, rotor and rotating shaft, described stator is fixed in casing, rotor is fixed in rotating shaft, the frame of cylindrical shape it is respectively equipped with in the casing corresponding with the axial two ends of stator core, it is respectively equipped with End winding in casing outside the axial two ends of stator core, it is characterised in that: it is laid with the annular groove of more than two on the inner periphery of the described frame adjacent with the axial end of stator core.
The submersible motor of improvement end the most according to claim 1 frame, it is characterized in that: the cross section of described annular groove is rectangle, groove depth h of annular groove is 30%～40%H, and wherein H is the thickness of frame, groove width b be spacing c between 1.0～1.2h, and adjacent annular groove be 1.0～1.2h.
The submersible motor of improvement end the most according to claim 1 and 2 frame, it is characterised in that: the groove number N of described annular groove is 4～6, and distance annular groove and the axial end of stator core between adjacent with the axial end of stator core is 20～30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410702530.0A CN104467248B (en) | 2014-11-29 | 2014-11-29 | Submersible motor with improved end frames |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410702530.0A CN104467248B (en) | 2014-11-29 | 2014-11-29 | Submersible motor with improved end frames |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104467248A CN104467248A (en) | 2015-03-25 |
| CN104467248B true CN104467248B (en) | 2017-01-11 |
Family
ID=52912812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410702530.0A Active CN104467248B (en) | 2014-11-29 | 2014-11-29 | Submersible motor with improved end frames |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104467248B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081600U (en) * | 1990-07-26 | 1991-07-24 | 耿志远 | Screened submersible motor |
| RU2106733C1 (en) * | 1993-07-01 | 1998-03-10 | Виктор Иванович Ветохин | Electric machine |
| CN100448141C (en) * | 2006-10-16 | 2008-12-31 | 中山大学 | Alternating current permanent-magnet water-submersible electric machine |
| CN204216700U (en) * | 2014-11-29 | 2015-03-18 | 合肥恒大江海泵业股份有限公司 | Improve the submersible motor of end frame |
-
2014
- 2014-11-29 CN CN201410702530.0A patent/CN104467248B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104467248A (en) | 2015-03-25 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Improving the end frame of the submersible motor Effective date of registration: 20231129 Granted publication date: 20170111 Pledgee: Industrial and Commercial Bank of China Changfeng Branch Pledgor: HEFEI HENGDA JIANGHAI PUMP Co.,Ltd. Registration number: Y2023980068468 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |