CN204947863U - The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous - Google Patents
The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous Download PDFInfo
- Publication number
- CN204947863U CN204947863U CN201520679567.6U CN201520679567U CN204947863U CN 204947863 U CN204947863 U CN 204947863U CN 201520679567 U CN201520679567 U CN 201520679567U CN 204947863 U CN204947863 U CN 204947863U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor core
- centrifugal pump
- synchronous
- pump
- 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.)
- Expired - Fee Related
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model refers in particular to a kind of centrifugal pump of line-start permanent magnetic synchronous motor, comprise the pump housing and motor, the rotor core of rotor is axially formed by stacking by multiple circular silicon steel sheet rotating shaft, the circumference of described rotor core is inserted with multiple sliver winding uniformly, and all sliver windings surround a circular cage-shaped structure; Rotor core is provided with one group or two groups of permanent magnets in addition, and permanent magnet forms one group or two groups along this opposite pole symmetrical to permanent magnet radial centre lines on rotor core radial section; Between the centre of rotor cage bar has, be separated with permanent magnet, form the first and second permanent magnets with the permanent magnet of the nexine of cage-shaped structure.Electric efficiency of the present utility model also improves 5-7% than efficient YE3,10-15% is improved than the efficiency of common Y2 serial motors, pump can be made when grid voltage change and load change, pump lift and flow to be remained unchanged, can be applicable to all pumps of not joining frequency converter, realize efficient, stable work.
Description
Technical field
The utility model belongs to pump technology field, refers in particular to a kind of centrifugal pump of line-start permanent magnetic synchronous motor.
Background technology
Pump is one of the most frequently used equipment, be machinery industry use TV university class, indusqtrial water supply pump major part is centrifugal water pump.There are single-stage or multistage horizontal centrifugal pump, the tubing pump of single-stage or multistage vertical type, booster pump, also have the centrifugal pump of single-stage or multistage diving.Agricultural plumbing pump is also centrifugal pump is main, has the centrifugal pump of single-stage horizontal, single-stage or multistage immersible pump.
Urban architecture is supplied water, and major part all adopts multistage centrifugal water supplying pump.The motor used is single-phase or threephase asynchronous machine mostly.This motor limits due to structural principle, and efficiency is on the low side, and technique falls behind to be badly in need of correcting and improves.
When the current whole society advocates energy-saving and emission-reduction, the efficiency improving pump especially has major and immediate significance.The utility model is exactly solve the technology comprehensively improving pump engine efficiency.
Summary of the invention
It is simple that the purpose of this utility model is to provide a kind of structure, safe and reliable, the centrifugal pump of the line-start permanent magnetic synchronous motor that operating efficiency is high.
The purpose of this utility model is achieved in that
The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous, comprise the pump housing and motor, motor comprises rotor and stator, described stator is substantially identical with the stator of threephase asynchronous machine, described rotor comprises the rotating shaft being positioned at center and the rotor core be enclosed within rotating shaft, rotor core is axially formed by stacking by multiple circular silicon steel sheet rotating shaft, and the circumference of described rotor core is inserted with multiple sliver winding uniformly, and all sliver windings surround a circular cage-shaped structure; Rotor core is also provided with one group or two groups of permanent magnets, permanent magnet is symmetricly set on rotating shaft week side to become up and down with circular mouse cage or to mix overlapping, and permanent magnet forms one group or two groups along this opposite pole symmetrical to permanent magnet radial centre lines on rotor core radial section.
Epitrochanterian circular mouse cage is cast aluminium or copper, and permanent magnet is built in circular mouse cage.
Described centrifugal pump is single-stage or multistage, vertical or horizontal, all kinds of centrifugal pumps of submersible type or land formula.
Described permanent magnet comprises first order permanent magnet and second level permanent magnet, and first order permanent magnet is arranged between two adjacent sliver windings, is provided with described second level permanent magnet inside the sliver winding between two adjacent first order permanent magnets.
When described permanent magnet is built in rotor core, permanent magnet is built in rotor core according to level to number redial, or tangential on board is in rotor core, or body radial direction and the mixing of tangential interval are built in rotor core; Described permanent magnet to be built on rotor core and in yi word pattern or V-type or U-shaped or W type.
Described permanent magnet comprises neodymium iron boron magnetic body, samarium cobalt magnet, Ferrite and and other magnetic materials.
The utility model gives prominence to compared to existing technology and useful technique effect is:
The utility model and existing Technical comparing, the one section of permanent magnet in surface is added in the space of circular cage-shaped structure, double-deck magnet structure is become with the permanent magnet below circular cage-shaped structure, become the first permanent magnet and the second permanent magnet, circular cage-shaped structure mainly obtains starting torque, and under the effect of stator coil rotating magnetic field, epitrochanterian permanent magnet rotates immediately, when the rotary speed close to stator field, pull in by permanent magnet.This be placed on permanent magnet in the middle of sliver due to the position radius relative to axle center larger, the moment that can play is larger, also has magnet steel more close to rotor surface, magnetic is close larger, permanent magnet obtains required torque of pulling in, two aspects are fully taken into account, and make motor fully obtain larger starting torque and enough torques of pulling in.This structure also can with other combinations of legend with the use of, form asynchronous starting and permanent magnet run-in synchronism motor.
The pump that motor of the present utility model forms is compared with the pump of existing employing common asynchronous moter, its electric efficiency improves 5-7%, the unit efficiency of pump is also corresponding to be improve, the synchronous stable speed function of line-start permanent magnetic synchronous motor, pump can be made when grid voltage change and load change, pump lift and flow to be remained unchanged, can be applicable to that all pumps of not joining frequency converter are vertical or horizontal, on single-stage or multistage centrifugal pump, realize efficient, stable work.
Accompanying drawing explanation
Fig. 1 is structure diagram of the present utility model.
Fig. 2 is one of permanent magnet scheme of installation of the present utility model.
Fig. 3 is permanent magnet scheme of installation two of the present utility model.
Fig. 4 is permanent magnet scheme of installation three of the present utility model.
Fig. 5 is permanent magnet scheme of installation four of the present utility model.
Fig. 6 is permanent magnet scheme of installation five of the present utility model.
Fig. 7 is permanent magnet scheme of installation six of the present utility model.
Fig. 8 is permanent magnet scheme of installation seven of the present utility model.
Fig. 9 is permanent magnet scheme of installation eight of the present utility model.
Figure 10 is permanent magnet scheme of installation nine of the present utility model.
In figure: 1-impeller; 2-motor; 3-rotating shaft; 4-rotor core; 5-sliver winding; 6-magnetic isolation plate; 7-permanent magnet; 8-second permanent magnet; 9-first order permanent magnet; The 10-pump housing; 11-stator.
Embodiment
The utility model is further described with specific embodiment below in conjunction with accompanying drawing:
The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous, comprise the pump housing 10 and motor 2, motor comprises stators and rotators, described stator is substantially identical with the stator of threephase asynchronous machine, described rotor comprises the rotating shaft 3 being positioned at center and the rotor core 4 be enclosed within rotating shaft, rotor core is axially formed by stacking by multiple circular silicon steel sheet rotating shaft, and the circumference of described rotor core is inserted with multiple sliver winding 5 uniformly, and all sliver windings 5 surround a circular cage-shaped structure;
Rotor core is provided with one group or two groups of permanent magnets 7, permanent magnet is symmetricly set on rotating shaft 3 weeks sides and becomes up and down with circular mouse cage or mix overlapping, and permanent magnet 7 forms one group or two groups along this opposite pole symmetrical to permanent magnet radial centre lines on rotor core radial section.
Described centrifugal pump is single-stage or multistage, vertical or horizontal, all kinds of centrifugal pumps of submersible type or land formula.
The circular mouse cage cast aluminium that described sliver winding 5 is formed or copper, permanent magnet is built in circular mouse cage.
The cross section of described sliver winding is circle, pyriform, pyriform or other shapes; The notch of the described sliver winding of the accommodation on rotor core is open slot or enclosed slot.
Described permanent magnet is for being built in rotor core or being attached to rotor core surface.
When described permanent magnet is built in rotor core, permanent magnet radial direction is built in rotor core, or permanent magnet tangential on board is in rotor core, or as shown in Figure 10, permanent magnet radial direction and the mixing of tangential interval are built in rotor core.
Described permanent magnet comprises neodymium iron boron magnetic body, samarium cobalt magnet, Ferrite and and other magnetic materials.
As another kind conversion, described permanent magnet is that yi word pattern as shown in Figure 5 or V-type as shown in Figure 7 or U-shaped or as shown in Figure 9 W type are as shown in Figure 8 built in rotor core.
As shown in Figure 2, described permanent magnet comprises first order permanent magnet 9 and second level permanent magnet 8, first order permanent magnet 9 is arranged between two adjacent sliver windings 5, is provided with described second level permanent magnet 8 inside the sliver winding between two adjacent first order permanent magnets.
Described line-start permanent magnetic synchronous motor stator winding is the distributed winding of sinusoidal wave distribution.The stator structure of the three-phase synchronous motor of distributed winding and the distributed winding of ordinary three-phase synchronous are substantially similar, and stator can be selected by common Y-series stator punching, and the process such as line bag insulator pin is all the same with ordinary three-phase synchronous.But the rotor of motor and different, this rotor extexine has the squirrel-cage bar of cast aluminium (or copper), and there is magnet steel the inside.Rotor die casting aluminium ring in tooth window bar of old-fashioned three-phase or monophase machine, aluminium ring is closed-loop path, does cutting magnetic line and rotary motion in stator field, and rotate along with stator field and rotate, the rotation being slower than magnetic field all the time forms asynchronous machine.Often loss is larger for the rotor of this die casting aluminium, generally account for 5-7% of total losses, and the rotor that this product uses is squirrel-cage bar and magnet double-decker, squirrel-cage bar is priming, start after permanent magnet with stator line compared with rotating magnetic field rotate, during fast magnetic field rotating speed close to stator coil, after rotor pulls in by the pulsating torque of permanent magnet, the rotation in squirrel-cage bar and magnetic field is synchronous, no longer produce magnetic force, substantially no longer include electric current to produce, thus eddy current loss during asynchronous machine work is also no longer included, again because the wire circle of magneto reduces than asynchronous machine, wire sectional area increases, resistance value is also little, copper cash loss also reduces, therefore overall loss is fewer than asynchronous machine a lot.Therefore the motor of the efficiency of line-start permanent magnetic synchronous motor YE3 more efficient than three-phase also will raise the efficiency 5-7%, raises the efficiency 8-15% than common Y2, Y3 motor.
When the rotating speed of line-start permanent magnetic synchronous motor pull in reach stable after; squirrel-cage bar is generation current no longer; ineffective, if motor load continues to increase arrive torque when losing synchronous pull-out torque, now motor will significantly rise until shut down by electric current.This pull-out torque is usually than the twice or more of specified power, and overload capacity also exceedes common asynchronous machine.When machine operation is run in the rated operating range of design, add various as safeguard measures such as overcurrents, this possibility would not be occurred.Line-start permanent magnetic synchronous motor be operated in rated power interval time, owing to having net synchronization capability, when there being load variations, its rotating speed can keep and the Frequency Synchronization of power supply and can not produce the change of rotating speed.This makes pump after mixing this synchronous machine, and pump is when the change that load variations or supply voltage decline, and pump can keep the constant of lift and flow.This to need to keep pump discharge lift to stablize and don't pump with frequency converter time valuable especially function.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection range of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection range of the present utility model.
Claims (7)
1. the centrifugal pump that an asynchronous starting and permanent magnet is synchronous, comprise the pump housing and motor, motor comprises rotor and stator, it is characterized in that, described rotor comprises the rotating shaft being positioned at center and the rotor core be enclosed within rotating shaft, rotor core is axially formed by stacking by multiple circular silicon steel sheet rotating shaft, and the circumference of described rotor core is inserted with multiple sliver winding uniformly, and all sliver windings surround a circular cage-shaped structure; Rotor core is also provided with one group or two groups of permanent magnets, permanent magnet is symmetricly set on rotating shaft week side to become up and down with circular mouse cage or to mix overlapping, and permanent magnet forms one group or two groups along this opposite pole symmetrical to permanent magnet radial centre lines on rotor core radial section.
2. the centrifugal pump that a kind of asynchronous starting and permanent magnet according to claim 1 is synchronous, is characterized in that, epitrochanterian circular mouse cage is cast aluminium or copper, and permanent magnet is built in circular mouse cage.
3. the centrifugal pump that a kind of asynchronous starting and permanent magnet according to claim 1 is synchronous, it is characterized in that, described permanent magnet comprises first order permanent magnet and second level permanent magnet, first order permanent magnet is arranged between two adjacent sliver windings, is provided with described second level permanent magnet inside the sliver winding between two adjacent first order permanent magnets.
4. the centrifugal pump that a kind of asynchronous starting and permanent magnet according to claim 1 and 2 is synchronous, is characterized in that, described centrifugal pump is single-stage or multistage, vertical or horizontal, all kinds of centrifugal pumps of submersible type or land formula.
5. the centrifugal pump that a kind of asynchronous starting and permanent magnet according to claim 1 and 2 is synchronous, it is characterized in that, when described permanent magnet is built in rotor core, permanent magnet is built in rotor core according to level to number redial, or, tangential on board is in rotor core, or body radial direction and the mixing of tangential interval are built in rotor core; Described permanent magnet to be built on rotor core and in yi word pattern or V-type or U-shaped or W type.
6. the centrifugal pump that a kind of asynchronous starting and permanent magnet according to claim 1 is synchronous, is characterized in that, the circular in cross-section of described sliver winding, pyriform, pyriform or other shapes.
7. the centrifugal pump that a kind of asynchronous starting and permanent magnet according to claim 1 is synchronous, is characterized in that, described permanent magnet comprises neodymium iron boron magnetic body, samarium cobalt magnet and Ferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520679567.6U CN204947863U (en) | 2015-09-02 | 2015-09-02 | The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520679567.6U CN204947863U (en) | 2015-09-02 | 2015-09-02 | The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204947863U true CN204947863U (en) | 2016-01-06 |
Family
ID=55015252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520679567.6U Expired - Fee Related CN204947863U (en) | 2015-09-02 | 2015-09-02 | The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204947863U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20210099069A1 (en) * | 2019-09-27 | 2021-04-01 | Portland State University | Electromagnetic configurations and assembly methods for a halbach rotor magnetic gear |
-
2015
- 2015-09-02 CN CN201520679567.6U patent/CN204947863U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20210099069A1 (en) * | 2019-09-27 | 2021-04-01 | Portland State University | Electromagnetic configurations and assembly methods for a halbach rotor magnetic gear |
| US12040677B2 (en) * | 2019-09-27 | 2024-07-16 | Portland State University | Electromagnetic configurations and assembly methods for a Halbach rotor magnetic gear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105119452A (en) | Centrifugal pump of asynchronous-starting permanent-magnet-synchronous motor | |
| CN103683771A (en) | Like pole type inductor motor hiding salient pole | |
| CN107579637A (en) | A kind of axial radial flux magneto | |
| CN102545412A (en) | High-efficiency and large-torque disk type switching magnetoresistive motor | |
| CN204947863U (en) | The centrifugal pump that a kind of asynchronous starting and permanent magnet is synchronous | |
| CN201252459Y (en) | Asynchronous starting permanent magnet synchronous motor | |
| CN104184291B (en) | Two half 4 pole asynchronous starting permanent magnet synchronous motors and pole-changing windings method | |
| CN100468923C (en) | A.C./D.C permanent-magnet synchronous generator | |
| CN202565053U (en) | Magnetic-field automatic accelerating permanent-magnet wind driven generator | |
| Lehr et al. | Electromagnetic design of a permanent magnet Flux-Switching-Machine as a direct-driven 3 MW wind power generator | |
| CN104852542A (en) | Pump asynchronous starting permanent magnetism three-phase synchronous motor | |
| Tian et al. | Line-start permanent magnet synchronous motor starting capability improvement using pole-changing method | |
| CN208675081U (en) | A kind of magnetic pawl motor of high power density high efficiency high reliability | |
| CN205421417U (en) | PMSM constant voltage does not have negative pressure water supply unit | |
| CN205605447U (en) | Submersible tubular pump | |
| CN102684341B (en) | Permanent-magnet wind-driven generator capable of realizing self-acceleration of magnetic field | |
| CN104539129A (en) | Asynchronous starting permanent-magnet synchronous motor and asynchronous motor transformation method | |
| CN105604136A (en) | Constant-pressure non-negative pressure water supplying unit adopting permanent magnet synchronous motors | |
| CN201041975Y (en) | Low-speed and ultra-high efficient lanthanon permanent magnetic synchronous electromotor | |
| CN103618391B (en) | A kind of permanent magnet brushless electromotor of ten pole 12 grooves | |
| CN207732599U (en) | Asynchronous motor based on pulsating field | |
| CN112072881A (en) | Motor and compressor | |
| CN2419729Y (en) | Synchronous motor with rare-earth permanent magnets | |
| CN104852540A (en) | Speed-regulation permanent magnetism three-phase synchronous motor used for pump | |
| CN104852541A (en) | Energy-saving permanent magnetism motor used for pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170112 Address after: Taizhou City, Zhejiang province 317521 Wenling City Zeguo town Muyu electromechanical Industrial Park Patentee after: ZHEJIANG XILING CO., LTD. Address before: The town of Wenling Taizhou City Tower Ao village of 317525 cities in Zhejiang Province Patentee before: Zhejiang Chuangmei Electromotor Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200513 Address after: The town of Wenling Taizhou City Tower Ao village of 317522 cities in Zhejiang Province Patentee after: ZHEJIANG CHUANGMEI ELECTROMOTOR Co.,Ltd. Address before: Taizhou City, Zhejiang province 317521 Wenling City Zeguo town Muyu electromechanical Industrial Park Patentee before: ZHEJIANG XILING Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20200902 |