CN121124409A - Water pump with axial force compensation and design method - Google Patents
Water pump with axial force compensation and design methodInfo
- Publication number
- CN121124409A CN121124409A CN202511653772.XA CN202511653772A CN121124409A CN 121124409 A CN121124409 A CN 121124409A CN 202511653772 A CN202511653772 A CN 202511653772A CN 121124409 A CN121124409 A CN 121124409A
- Authority
- CN
- China
- Prior art keywords
- axial force
- water pump
- rotor
- axial
- design method
- 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.)
- Pending
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
本申请涉及一种具有轴向力补偿的水泵及设计方法，涉及水泵的技术领域，包括定子和转子，所述的定子和转子均为轴向梯度锥形结构，转子所受到的轴向力和定子磁场对转子磁场所产生的磁拉力的轴向分量相平衡。本申请具有能够进行轴向力补偿，减小水泵运行寿命衰减的优点。
This application relates to a water pump with axial force compensation and its design method, belonging to the technical field of water pumps. It includes a stator and a rotor, both of which are axially gradient conical structures. The axial force on the rotor and the axial component of the magnetic pull generated by the stator magnetic field on the rotor magnetic field are balanced. This application has the advantage of being able to perform axial force compensation, reducing the decrease in the service life of the water pump.
Description
Technical Field
The application relates to the technical field of water pumps, in particular to a water pump with axial force compensation and a design method.
Background
The axial force born by the rotor of the existing water pump (such as a shielding pump) in the running process can cause axial movement, when the displacement exceeds a design threshold value, the dynamic fit clearance between the impeller and the pump shell is unbalanced, the abnormal wear rate of the friction pair is accelerated, and then pulsation loss and water pump vibration are induced, so that the running life of the water pump is finally reduced.
Disclosure of Invention
In view of the shortcomings of the prior art, one of the purposes of the present application is to provide a water pump with axial force compensation and a design method thereof, which have the advantages of axial force compensation and reduction of the service life attenuation of the water pump.
The above object of the present application is achieved by the following technical solutions:
The water pump with the axial force compensation comprises a stator and a rotor, wherein the stator and the rotor are of an axial gradient conical structure, and the axial force born by the rotor and the axial component of the magnetic pulling force generated by the magnetic field of the stator on the magnetic field of the rotor are balanced.
The application may in a preferred example be further configured to further comprise an armature winding, the armature winding being arranged perpendicular to the motor gap.
The application also discloses a design method of the water pump with axial force compensation, which is used for designing the water pump with axial force compensation, and comprises the following steps:
s1, calculating the uniform air gap length g;
S2, calculating the axial force acting on the impeller of the water pump;
s3, calculating an axial component of the magnetic tension;
s4, calculating the motor clearance angle due to the fact that the axial component of the magnetic pulling force is balanced with the axial force.
The application may in a preferred example be further configured such that, in step S1, the uniform air gap length g is calculated using a formula,, wherein,The unit is m for the inner diameter of the stator; The unit is m for the outer diameter of the rotor.
The present application may be further configured in a preferred example to calculate an axial force available to act on the shield pump impeller using a formula in step S2; Wherein F 1 is the axial force acting on the impeller of the canned motor pump in N, A is the surface area of the whole rotor of the canned motor pump in m 2, and p is the pressure value of the fluid acting on the whole rotor surface per unit area in N/m 2.
The application may be further configured, in a preferred example, in step S4, to calculate the magnetic pull axial component using a formula,Wherein F m is the axial component of magnetic pull force, the unit is N, B is the magnetic induction intensity, the unit is T, A 1 is the effective magnetic pole area, the unit is m 2, and A 1 =kA (k is a proportionality coefficient); is magnetic permeability, and the unit is H/m; The motor clearance angle is in degrees.
The application may in a preferred example be further configured such that, in step S3, the available motor gap angle is calculated using a formula,。
The application has the following advantages:
The motor rotor configuration is optimized into an axial gradient conical structure, meanwhile, electromagnetic field distribution matched with the conical rotor is established in the stator winding, dynamic compensation of axial force is achieved by utilizing reverse magnetic pulling force generated by the electromagnetic field distribution, and the service life of the water pump is prolonged.
Drawings
Fig. 1 is a schematic view of the stator and rotor structure of the present application.
Reference numeral 1, stator 2, rotor.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a water pump with axial force compensation according to the present application comprises a stator 1, a rotor 2 and an armature winding, which is arranged perpendicular to the motor gap, in which case the magnetic flux direction is also perpendicular to the motor gap. The stator 1 and the rotor 2 are both in axial gradient conical structures, and the axial force applied to the rotor 2 and the axial component of the magnetic pulling force generated by the stator magnetic field on the rotor magnetic field are balanced. In the embodiment, the gradient conical structure means that the dimensional change of the rotor/stator along the axial direction is regular and continuous gradual change, and not abrupt step change, so that the characteristics that the rotor/stator gradually tapers along the axial direction, and the end close to the pump body is large and the other end is small are met.
The application also discloses a design method of the water pump with axial force compensation, which comprises the following steps,
S1, calculating the uniform air gap length g,, wherein,The unit is m for the inner diameter of the stator 1; the unit is m for the outer diameter of the rotor 2;
S2, calculating the axial force acting on the impeller of the water pump, Wherein F 1 is the axial force acting on the impeller of the canned motor pump, the unit is N, A is the surface area of the whole rotor of the canned motor pump, the unit is m 2, and p is the pressure value of fluid acting on the whole rotor surface per unit area, the unit is N/m 2;
s3, calculating the axial component of the magnetic pulling force, Wherein F m is the axial component of magnetic pull force, the unit is N, B is the magnetic induction intensity, the unit is T, A 1 is the effective magnetic pole area, the unit is m 2, and A 1 =kA (k is a proportionality coefficient); is magnetic permeability, and the unit is H/m; The motor clearance angle is in degrees;
S4, calculating the motor clearance angle because the axial component of the magnetic pulling force is balanced with the axial force, 。
The implementation principle of the embodiment is that the configuration of the motor rotor is optimized to be an axial gradient conical structure, meanwhile, electromagnetic field distribution matched with the conical rotor is established in the stator winding, and the dynamic compensation of axial force is realized by utilizing the generated reverse magnetic pulling force, so that the service life of the water pump is prolonged.
The embodiments of the present application are all preferred embodiments of the present application, and are not limited in scope by the present application, so that all equivalent changes according to the structure, shape and principle of the present application are covered by the scope of the present application.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511653772.XA CN121124409A (en) | 2025-11-12 | 2025-11-12 | Water pump with axial force compensation and design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511653772.XA CN121124409A (en) | 2025-11-12 | 2025-11-12 | Water pump with axial force compensation and design method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN121124409A true CN121124409A (en) | 2025-12-12 |
Family
ID=97950235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202511653772.XA Pending CN121124409A (en) | 2025-11-12 | 2025-11-12 | Water pump with axial force compensation and design method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN121124409A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08144987A (en) * | 1994-11-18 | 1996-06-04 | Ebara Corp | Centrifugal motor pump |
| CN1278188A (en) * | 1997-09-05 | 2000-12-27 | 文特拉西斯特股份有限公司 | Rotary pump with hydrodynamically suspended impeller |
| US20060238053A1 (en) * | 2004-03-01 | 2006-10-26 | The University Of Toledo | Conical bearingless motor/generator |
| JP2010063196A (en) * | 2008-09-01 | 2010-03-18 | Suri-Ai:Kk | Axial gap motor and electromotive fluid drive unit |
| CN114696536A (en) * | 2022-04-12 | 2022-07-01 | 湖南工程学院 | A turbine direct drive conical rotor permanent magnet synchronous generator set |
-
2025
- 2025-11-12 CN CN202511653772.XA patent/CN121124409A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08144987A (en) * | 1994-11-18 | 1996-06-04 | Ebara Corp | Centrifugal motor pump |
| CN1278188A (en) * | 1997-09-05 | 2000-12-27 | 文特拉西斯特股份有限公司 | Rotary pump with hydrodynamically suspended impeller |
| US20060238053A1 (en) * | 2004-03-01 | 2006-10-26 | The University Of Toledo | Conical bearingless motor/generator |
| JP2010063196A (en) * | 2008-09-01 | 2010-03-18 | Suri-Ai:Kk | Axial gap motor and electromotive fluid drive unit |
| CN114696536A (en) * | 2022-04-12 | 2022-07-01 | 湖南工程学院 | A turbine direct drive conical rotor permanent magnet synchronous generator set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2239831B1 (en) | Magnetic levitaion motor and pump | |
| CN106594072B (en) | A non-thrust disc radial and axial integrated permanent magnet bias magnetic bearing | |
| CN108518347A (en) | A kind of integral shaft synchronizes canned motor pump to suspension permanent magnet | |
| CN110319149B (en) | Electromagnetic active control device for lateral vibration of ship shafting | |
| CN107448475A (en) | A kind of Three Degree Of Freedom magnetic bearing and current vortex sensor integral structure | |
| CN110311526A (en) | A stator yokeless axial flux permanent magnet motor | |
| CN121124409A (en) | Water pump with axial force compensation and design method | |
| CN206004436U (en) | A kind of composite molecular pump high-speed brushless DC electromotor | |
| CN109639095B (en) | A spiral channel DC magnetic fluid pump | |
| CN103701236B (en) | A kind of outer rotor synchronous magnetic resistance motor rotor | |
| CN113090339B (en) | Active gap control brush seal structure based on magnetic attraction effect | |
| CN102537048A (en) | Axial magnetic bearing capable of controlling radial twisting | |
| CN211574035U (en) | Integrated magnetic suspension bearing | |
| JP2017055556A (en) | Axial gap type rotating electric machine and pump and compressor using the same | |
| CN208380885U (en) | A kind of integral shaft is to the synchronous canned motor pump of suspension permanent magnet | |
| CN103155357B (en) | Motor | |
| CN107093938A (en) | Magnetic suspension motor and domestic air conditioning | |
| CN112436632B (en) | Compressor and air conditioner | |
| CN111742466A (en) | Permanent magnet type motor | |
| CN209402267U (en) | Rotor Assembly and Motor | |
| FI4305308T3 (en) | Wear element for a slurry pump | |
| CN115378153B (en) | Motor cores, scroll compressors and refrigeration equipment | |
| CN113452199B (en) | Mechanical permanent magnet hybrid bearing system for vertical installation of motor | |
| CN120361414B (en) | Magnetic suspension blood pump structure | |
| CN117937803B (en) | A high-voltage resistant permanent magnet shielded motor |
Legal Events
| 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 |