CN108286523A - High-speed centrifugal pump directly driven by permanent magnet motor - Google Patents
High-speed centrifugal pump directly driven by permanent magnet motor Download PDFInfo
- Publication number
- CN108286523A CN108286523A CN201711414002.5A CN201711414002A CN108286523A CN 108286523 A CN108286523 A CN 108286523A CN 201711414002 A CN201711414002 A CN 201711414002A CN 108286523 A CN108286523 A CN 108286523A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- centrifugal pump
- magnet motor
- impeller
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000703 high-speed centrifugation Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A high-speed centrifugal pump directly driven by a permanent magnet motor comprises a shell with a suction inlet and a discharge outlet, an impeller rotating in the shell and the permanent magnet motor coaxially driving the impeller; the permanent magnet motor includes a stator and a permanent magnet rotor separated therefrom by an air gap; the permanent magnet rotor comprises a rotor iron core and a permanent magnet fixed on the iron core; the diameter of the impeller is 100-300 mm, and the rated rotating speed is not less than 3000 r/m; the method is characterized in that: the cylindrical surface of the permanent magnet rotor, which is positioned at the air gap, is processed into a multi-thread. The design significantly reduces the permanent magnet rotor surface temperature rise, but maintains performance.
Description
Technical field
The present invention relates to a kind of high-speed centrifugal pump that permanent magnet motor directly drives, IPC classification belongs to F04D13/06.
Background technology
Fever is serious when the p-m rotor surface operating for the high-speed centrifugal pump that permanent magnet motor directly drives, and with routine
The type of cooling is difficult to improve.
In relation to term and the visible standard GB/T of common knowledge 7021《Centrifugal pump vocabulary of terms》With《Mechanical engineering manual》
With《Motor engineering handbook》.
Invention content
The technical problem to be solved by the present invention is to, propose a kind of high-speed centrifugal pump that permanent magnet motor directly drives, it can
Than the Wen Sheng that traditional design is substantially reduced rotor, and it is relatively simple for structure, reliability is preferably and efficiency is higher.
The technical solution that the present invention solves the technical problem is a kind of high speed centrifugation that permanent magnet motor directly drives
Pump includes the permanent-magnet electric of shell with suction inlet and outlet, the impeller and coaxial transmission impeller rotated in shell
Machine；The permanent magnet motor includes stator and the p-m rotor that is spaced from air gap；The p-m rotor include rotor core and
It is fixed on the permanent magnet of iron core；The impeller diameter is 100~300mm, and rated speed is not less than 3000r/m；
It is characterized in that：The cylindrical surface that the p-m rotor is located at air gap is processed as multi start thread.
Rotor cylinder surface, which is processed as screw thread, can dramatically increase the heat exchange area of rotor surface and air gap air and in rotor
It generates axial flow when rotation the hot-air in air gap is discharged, especially multi start thread has great-lift angle and can make full use of rotor
Cylindrical surface, in motor operation, to the air in air gap with shorter flow generates efficiently pumping and forms larger axial row
Air quantity and reach higher spiral wind speed, is more advantageous to the heat dissipation of rotor surface.Experiment shows that multi start thread is substantially reduced permanent magnetism
Rotor surface Wen Sheng, thus the shallower depth of thread can be used, it is reduced to the occupancy of air gap with retention property.
One of modular design of the technical solution is：The lift angle of the screw thread is 45 ° ± 10 °.The lift angle of screw thread is in the model
It encloses can reach and has higher pumping efficiency to the air in air gap.
The modular design of the technical solution second is that：The screw pitch of the screw thread is not more than 5 times of gas length.The design can
Reach enough cooling effect and magnetic circuit is influenced smaller.
The three of the modular design of the technical solution are：The helical pitch of the screw thread is 0.4~2 times of rotor length, and is described
The product of the number of leads and screw pitch.The design reaches the full utilization rotor cylinder surface, thus under equal conditions generates more
Big axial exhaust air rate reaches higher spiral wind speed.
The technical solution is further designed to：
--- the cylindrical surface that the stator is located at air gap is processed as the multi-thread of screw pitch same as p-m rotor, helical pitch and line number
Screw thread can further strengthen spiral wind speed and axial exhaust air rate；
--- the precession direction of the screw thread is consistent along the intrinsic airflow direction of axis in motor.
Technical solution of the present invention and its modular design will further illustrate in a specific embodiment.
Description of the drawings
Fig. 1 is the high speed centrifugation pump configuration main cross-sectional schematic diagram that permanent magnet motor of the embodiment of the present invention directly drives.
Fig. 2 is Fig. 1 structure Section A-A schematic cross-sectional views.
Fig. 3 is rotor of embodiment of the present invention assembly appearance schematic diagram.
Specific implementation mode
The embodiment of the present invention is improved on the basis of traditional structure,.The motor
The design for continuing to use the prior art includes：
--- the pump housing 1, with suction inlet 2 and outlet 3；
--- shaft 6；
--- impeller 4 is fixed in shaft 6 and is rotated in the pump housing；
--- engine base 5 is connected as one with the pump housing 1；
--- end cap 71,72 is covered in axial two ends of engine base 5；
--- stator 10 is fixed on 5 inner cavity of engine base comprising stator core 101 and stator winding 102；
--- rotor 12 is fixed on shaft 6 comprising rotor core 3 and positioned at secondly end for compressing iron core or simultaneous leading
The end ring 9 of electricity, shaft 6 are supported on end cap 71,72 through bearing；
--- the outer circle of rotor 12 and between the iron core inner circle of stator 10 have air gap 32；
--- a plurality of axial ventilation road 21 is formed between 5 inner cylinder of engine base and the iron core outer cylinder of stator 10；
--- 8 axial water-cooled channels 8 being sequentially connected in series are arranged in the shell of engine base 5, and are connected to water outside machine through pipe fitting
Circulatory system (not shown)；
--- rotor 12 is p-m rotor, is bumped into the permanent magnet 13 of 16 i.e. 8 pair pole in laminated core 14, and be provided with 8
Axial ventilation road 31；
--- the axially extended blade 121 of 12 right end of rotor, left end are fixed on shaft 6 with axial--flow blading 99 and are constituted axial-flow type
Impeller.When rotor 12 rotates, the interior circulating current in direction as shown in fig. 1 is formed, wherein the airflow direction for flowing through air gap 32 is
From right-to-left.
Design is changed：
--- the whole length of rotor core outer round surface is machined as multi-thread external screw thread 50, and thread shape is triangle, screw pitch 1
~4mm, helical pitch are about the 1/2 of rotor length, by the specified steering of motor precession to the left.At this point, pressing common rotor length, spiral shell
Streakline number is 30~70；By common root diameter, the lift angle of screw thread is 45 ° ± 10 °.
--- stator core internal circular surfaces are machined as the multi-thread internal thread 60 consistent with 50 parameter of rotor multi start thread.
The present embodiment can have following design to change：
--- only rotor core outer round surface processes screw thread, and stator iron core inner circle surface does not process screw thread, although effect
It is slightly worse, but technique can significantly simplify；
--- thread shape is trapezoidal thread when screw thread is shallower, can also be changed to rectangular thread, reach larger heat exchange
Area and on magnetic circuit influence it is smaller.
Claims (5)
- Include shell with suction inlet and outlet, in shell 1. a kind of high-speed centrifugal pump that permanent magnet motor directly drives The permanent magnet motor of the impeller and coaxial transmission of interior the rotation impeller；The permanent magnet motor is included stator and is spaced from air gap P-m rotor；The p-m rotor includes rotor core and is fixed on the permanent magnet of iron core；The impeller diameter be 100~ 300mm, rated speed are not less than 3000r/m；It is characterized in that：The p-m rotor be located at air gap cylindrical surface be processed as it is multi-thread Screw thread.
- 2. according to centrifugal pump described in claim 1, it is characterised in that：The lift angle of the screw thread is 45 ° ± 10 °.
- 3. according to centrifugal pump described in claim 1, it is characterised in that：The screw pitch of the screw thread is not more than 5 times of gas length.
- 4. according to centrifugal pump described in claim 1 or claim 2 or claim 3, it is characterised in that：The stator is located at gas The cylindrical surface of gap is processed as the multi start thread of screw pitch same as p-m rotor, helical pitch and line number.
- 5. according to centrifugal pump described in claim 1 or claim 2 or claim 3, it is characterised in that：The precession of the screw thread Direction is consistent along the intrinsic airflow direction of axis in motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711414002.5A CN108286523B (en) | 2017-12-24 | 2017-12-24 | High-speed centrifugal pump directly driven by permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711414002.5A CN108286523B (en) | 2017-12-24 | 2017-12-24 | High-speed centrifugal pump directly driven by permanent magnet motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108286523A true CN108286523A (en) | 2018-07-17 |
| CN108286523B CN108286523B (en) | 2021-08-03 |
Family
ID=62832125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711414002.5A Active CN108286523B (en) | 2017-12-24 | 2017-12-24 | High-speed centrifugal pump directly driven by permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108286523B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188775A (en) * | 2020-01-16 | 2020-05-22 | 广东骏驰科技股份有限公司 | Electric water pump with high-efficient heat dissipation and damping structure |
| CN111486112A (en) * | 2019-01-29 | 2020-08-04 | 青岛海尔智能技术研发有限公司 | Magnetic suspension centrifugal compressor and air conditioning system |
| CN112343833A (en) * | 2020-11-05 | 2021-02-09 | 浙江青霄科技股份有限公司 | Dry submersible pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023200129A1 (en) | 2023-01-10 | 2024-07-11 | Mahle International Gmbh | Fluid pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773121A (en) * | 2004-11-08 | 2006-05-17 | 浙江工业大学 | Pipe flowing electric pump |
| CN203722413U (en) * | 2013-12-27 | 2014-07-16 | 合肥盛亚电机电泵有限公司 | Dry-type stator submersible electric pump capable of preventing friction between stator and rotor |
| CN105119452A (en) * | 2015-09-02 | 2015-12-02 | 浙江创美机电有限公司 | Centrifugal pump of asynchronous-starting permanent-magnet-synchronous motor |
| CN205429914U (en) * | 2015-10-30 | 2016-08-03 | 天津中德职业技术学院 | Spiral self cooling rotor structure of high speed permanent magnet motors |
-
2017
- 2017-12-24 CN CN201711414002.5A patent/CN108286523B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773121A (en) * | 2004-11-08 | 2006-05-17 | 浙江工业大学 | Pipe flowing electric pump |
| CN203722413U (en) * | 2013-12-27 | 2014-07-16 | 合肥盛亚电机电泵有限公司 | Dry-type stator submersible electric pump capable of preventing friction between stator and rotor |
| CN105119452A (en) * | 2015-09-02 | 2015-12-02 | 浙江创美机电有限公司 | Centrifugal pump of asynchronous-starting permanent-magnet-synchronous motor |
| CN205429914U (en) * | 2015-10-30 | 2016-08-03 | 天津中德职业技术学院 | Spiral self cooling rotor structure of high speed permanent magnet motors |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486112A (en) * | 2019-01-29 | 2020-08-04 | 青岛海尔智能技术研发有限公司 | Magnetic suspension centrifugal compressor and air conditioning system |
| CN111188775A (en) * | 2020-01-16 | 2020-05-22 | 广东骏驰科技股份有限公司 | Electric water pump with high-efficient heat dissipation and damping structure |
| CN111188775B (en) * | 2020-01-16 | 2024-05-14 | 广东骏驰科技股份有限公司 | Electric water pump with efficient heat dissipation and vibration reduction structure |
| CN112343833A (en) * | 2020-11-05 | 2021-02-09 | 浙江青霄科技股份有限公司 | Dry submersible pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108286523B (en) | 2021-08-03 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210623 Address after: 529040 No. 336 Qing Lan Road, hi tech Development Zone, Guangdong, Jiangmen Applicant after: HANYU GROUP Co.,Ltd. Address before: 529020, 4 of the East dike garden, Pengjiang Road, Pengjiang, Jiangmen, 102 Applicant before: Ye Luwei |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |