CN110299812A - A kind of cryogenic pump permanent magnet motor structure - Google Patents
A kind of cryogenic pump permanent magnet motor structure Download PDFInfo
- Publication number
- CN110299812A CN110299812A CN201910613371.XA CN201910613371A CN110299812A CN 110299812 A CN110299812 A CN 110299812A CN 201910613371 A CN201910613371 A CN 201910613371A CN 110299812 A CN110299812 A CN 110299812A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- magnet
- housing
- cryogenic pump
- rotor
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/46—Motors having additional short-circuited winding for starting as an asynchronous motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
Abstract
The present invention provides a kind of cryogenic pump permanent magnet motor structures, belong to electric machine structure technical field, the structure includes permanent magnet, auxiliary tank, magnetic shield, starts cage item, lobate hole, housing, air magnet isolation tank, the permanent magnet is distributed in T-shape, non-magnet material is filled with auxiliary tank in end, every group of permanent magnet has magnetic shield, the starting cage item concentrates three radicals to be symmetrically distributed in rotor edge, the lobate hole concentric type is distributed on rotor, and the housing is close to stator between rotor.Electric machine structure of the invention, the distribution of permanent magnet T-shape improves convex grey subset, end auxiliary tank fills non-magnet material, reduces leakage field and fixed permanent magnet, magnetic shield and air magnet isolation tank can effectively reduce leakage field, starting cage item can be improved starting torque, shorten the starting time, lobate hole can reduce rotor inertia, and circulate cryogenic media, reinforce heat dissipation, housing can prevent dielectric corrosion stator core and winding.
Description
Technical field
The present invention relates to a kind of cryogenic pump permanent magnet motor structures, belong to electric machine structure technical field.
Background technique
The conveying (such as liquefied natural gas, liquid nitrogen, liquid hydrogen etc.) of cryogenic media usually requires to use cryogenic pump, due to cryogenic media
Temperature it is usually relatively low, and the core running gear as cryogenic pump, electric motor for pump should be low temperature electric machine.Magneto has
High-efficient, the simple and reliable for operation feature of structure, the shape and size of motor are flexible and varied, be widely used in aerospace,
National defence, industrial and agricultural production and the every field of daily life.Extensive research with low temperature electric machine in countries in the world, it is efficient low
Application of the warm magneto in cryogenic pump just has vast potential for future development.However the problems such as leakage field, heat dissipation are slow, starting difficulty
It is the inherent shortcoming of magneto, and under cryogenic, influence of the selection of stator and rotor sructure and material to motor is more aobvious
It obtains particularly important, it is therefore desirable to which the structure of low-temperature and high-speed magneto is specifically designed.
Summary of the invention
The object of the present invention is to provide a kind of cryogenic pump permanent magnet motor structures, are being run with solving existing magneto
The problems such as leakage field in journey, heat dissipation be slow, hard-to-start.
In order to achieve the above objectives the technical scheme is that the structure includes permanent magnet, auxiliary tank, magnetic shield, rises
Dynamic cage item, lobate hole, housing, air magnet isolation tank, the permanent magnet are distributed in T-shape, and end is filled non-with auxiliary tank
Permeability magnetic material, every group of permanent magnet have magnetic shield, and the starting cage item concentrates three radicals to be symmetrically distributed in rotor edge,
The lobate hole concentric type is distributed on rotor, and the housing is close to stator between rotor.
In above-mentioned technical proposal, the permanent magnet is distributed in T-shape, since medium temperature is extremely low, therefore uses magnetic conductivity
It can preferable Sm-Co rare earth permanent-magnetic material.
In above-mentioned technical proposal, filling uses lower-cost non-magnet material such as titanium inside the auxiliary tank
Alloy.
In above-mentioned technical proposal, the magnetic shield is using the non-magnet materials such as aluminium, width d, d be located at 3~4mm it
Between.
In above-mentioned technical proposal, the housing uses the alloy N10276 of Low temperature-resistancorrosion-resistant corrosion-resistant.
By using above-mentioned technical proposal, magneto obtains good operation characteristic, and permanent magnet can using T-shape design
To improve convex grey subset, permanent magnet end auxiliary tank adds non-magnet material, reduces leakage field and fixed permanent magnet, magnetic shield and air
Magnet isolation tank can effectively reduce leakage field, and starting cage item centralization is symmetrical, improve starting torque, shorten the starting time, lobate
Hole can reduce rotor inertia, enhance heat-sinking capability, and rotor can be isolated in housing, prevent dielectric corrosion stator core and around
Group, delivery hole can circulate cryogenic media, not influence conducive to heat dissipation and permanent magnetism bulk properties.
Detailed description of the invention
Attached drawing 1 is a kind of cryogenic pump permanent magnet motor structure schematic diagram；
Attached drawing 2 is the structural schematic diagram of magnetic shield；
In figure: 1, air magnet isolation tank, 2, permanent magnet, 3, magnetic shield, 4, lobate hole, 5, starting cage item, 6, housing, 7, auxiliary
Slot.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Referring to Figure of description 1,2, a kind of cryogenic pump permanent magnet motor structure, which is characterized in that the structure includes sky
Gas magnet isolation tank (1), magnetic shield (3), lobate hole (4), starts cage item (5), housing (6), auxiliary tank (7), institute at permanent magnet (2)
The air magnet isolation tank (1) stated is circle ring, and the permanent magnet (2) is in T-shape fabricated structure, the magnetic shield
(3) it is located at the junction of every group of permanent magnet and air magnet isolation tank, the lobate hole (4) is circumferentially uniformly distributed, and described rises
Dynamic cage item (5) concentrate three radicals to be symmetrically distributed in rotor edge, and the housing (6) is close to stator between rotor,
The auxiliary tank (7) is located at every group of permanent magnet (2) end, inside filling non-permeable material.
The permanent magnet (2) is distributed in T-shape, since medium temperature is extremely low, therefore uses the preferable Sm-Co of magnetic property
Rare earth permanent-magnetic material.
The magnetic shield (3) is using non-magnet materials such as aluminium, and width d, d is between 3~4mm.
The housing (6) uses the alloy N10276 of Low temperature-resistancorrosion-resistant corrosion-resistant.
Filling uses lower-cost non-magnet material such as titanium alloy inside the auxiliary tank (7).
By using above-mentioned technical proposal, magneto obtains good operation characteristic, and permanent magnet (2) is set using T-shape
Convex grey subset can be improved in meter, and air magnet isolation tank (1) and magnetic shield (3) can effectively reduce leakage field, and it is right to start cage item (5) centralization
Claim distribution, improve starting torque, shorten the starting time, lobate hole (4) can reduce rotor inertia, and circulate cryogenic media, enhancing
Rotor can be isolated in heat-sinking capability, housing (6), prevent cryogenic media corrosion stator core and winding, permanent magnet (2) end
Auxiliary tank (7) adds non-magnet material, reduces leakage field and fixed permanent magnet.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (5)
1. a kind of cryogenic pump permanent magnet motor structure, which is characterized in that the structure includes air magnet isolation tank (1), permanent magnet
(2), magnetic shield (3), lobate hole (4), starting cage item (5), housing (6), auxiliary tank (7), the air magnet isolation tank (1) are
Circle ring, the permanent magnet (2) are in T-shape fabricated structure, and the magnetic shield (3) is located at every group of permanent magnet and sky
The junction of gas magnet isolation tank, the lobate hole (4) are circumferentially uniformly distributed, and the starting cage item (5) concentrates three radicals pair
Title is distributed in rotor edge, and the housing (6) is close to stator between rotor, and the auxiliary tank (7) is located at every
Group permanent magnet (2) end, inside filling non-permeable material.
2. a kind of cryogenic pump permanent magnet motor structure according to claim 1, which is characterized in that the permanent magnet
(2) it is distributed in T-shape, since medium temperature is extremely low, therefore uses the preferable Sm-Co rare earth permanent-magnetic material of magnetic property.
3. a kind of cryogenic pump permanent magnet motor structure according to claim 1, which is characterized in that the magnetic shield
(3) using non-magnet materials such as aluminium, width d, d is between 3~4mm.
4. a kind of cryogenic pump permanent magnet motor structure according to claim 1, which is characterized in that the housing
(6) the alloy N10276 of Low temperature-resistancorrosion-resistant corrosion-resistant is used.
5. a kind of cryogenic pump permanent magnet motor structure according to claim 1, which is characterized in that the auxiliary tank
(7) internal filling uses lower-cost non-magnet material such as titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910613371.XA CN110299812A (en) | 2019-07-08 | 2019-07-08 | A kind of cryogenic pump permanent magnet motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910613371.XA CN110299812A (en) | 2019-07-08 | 2019-07-08 | A kind of cryogenic pump permanent magnet motor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110299812A true CN110299812A (en) | 2019-10-01 |
Family
ID=68030596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910613371.XA Pending CN110299812A (en) | 2019-07-08 | 2019-07-08 | A kind of cryogenic pump permanent magnet motor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110299812A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2098119U (en) * | 1991-05-14 | 1992-03-04 | 国营北京曙光电机厂 | Three-phase frequency-changer rare-earth permanent-magnet synchronous motor rotor |
| CN2169944Y (en) * | 1993-09-01 | 1994-06-22 | 闽东电机(集团)公司研究所 | Rare-earth permanent magnet synchronous motor |
| CN2327113Y (en) * | 1997-10-17 | 1999-06-30 | 北京市石景山区京磁技术公司 | Rare-earth permanent magnet efficient synchronous electric motor |
| CN201312146Y (en) * | 2008-11-18 | 2009-09-16 | 闽东电机(集团)股份有限公司 | Low-power large-torque highly-efficient oil pumping machine motor |
| CN201601540U (en) * | 2009-07-17 | 2010-10-06 | 浙江西子富沃德电机有限公司 | Permanent-magnet motor rotor structure |
| CN204216688U (en) * | 2014-11-06 | 2015-03-18 | 青岛万力科技有限公司 | Pump asynchronous starting and permanent magnet three-phase synchronous motor |
| CN106253515A (en) * | 2016-08-22 | 2016-12-21 | 北京理工大学 | A kind of synchronous/asynchronous combined type double-basis frequency motor |
| CN108777518A (en) * | 2018-06-15 | 2018-11-09 | 江苏大学 | A kind of rotor structure of the few rare-earth permanent-magnet electric machine of asymmetric mixing |
-
2019
- 2019-07-08 CN CN201910613371.XA patent/CN110299812A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2098119U (en) * | 1991-05-14 | 1992-03-04 | 国营北京曙光电机厂 | Three-phase frequency-changer rare-earth permanent-magnet synchronous motor rotor |
| CN2169944Y (en) * | 1993-09-01 | 1994-06-22 | 闽东电机(集团)公司研究所 | Rare-earth permanent magnet synchronous motor |
| CN2327113Y (en) * | 1997-10-17 | 1999-06-30 | 北京市石景山区京磁技术公司 | Rare-earth permanent magnet efficient synchronous electric motor |
| CN201312146Y (en) * | 2008-11-18 | 2009-09-16 | 闽东电机(集团)股份有限公司 | Low-power large-torque highly-efficient oil pumping machine motor |
| CN201601540U (en) * | 2009-07-17 | 2010-10-06 | 浙江西子富沃德电机有限公司 | Permanent-magnet motor rotor structure |
| CN204216688U (en) * | 2014-11-06 | 2015-03-18 | 青岛万力科技有限公司 | Pump asynchronous starting and permanent magnet three-phase synchronous motor |
| CN106253515A (en) * | 2016-08-22 | 2016-12-21 | 北京理工大学 | A kind of synchronous/asynchronous combined type double-basis frequency motor |
| CN108777518A (en) * | 2018-06-15 | 2018-11-09 | 江苏大学 | A kind of rotor structure of the few rare-earth permanent-magnet electric machine of asymmetric mixing |
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Application publication date: 20191001 |
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