CN105471138A - Rotor for submerged motor - Google Patents
Rotor for submerged motor Download PDFInfo
- Publication number
- CN105471138A CN105471138A CN201511014323.7A CN201511014323A CN105471138A CN 105471138 A CN105471138 A CN 105471138A CN 201511014323 A CN201511014323 A CN 201511014323A CN 105471138 A CN105471138 A CN 105471138A
- Authority
- CN
- China
- Prior art keywords
- rotor
- liquid
- rotor core
- motor
- latent liquid
- 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
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
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/165—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors characterised by the squirrel-cage or other short-circuited windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Induction Machinery (AREA)
- Reciprocating Pumps (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a rotor for a submerged motor. The rotor comprises a rotor core and a cast copper cage, wherein the rotor core is a cylinder; a center axle hole is formed in the cylinder; a liquid guide hole is formed in the inner edge of the rotor core; a rotor groove is formed in the outer edge of the rotor core; the cast copper cage comprises two end rings and a plurality of conducting bars; two ends of each conducting bar are connected with the two end rings respectively; the end rings are located at two ends of the rotor core respectively; and the conducting bars pass through the rotor groove. The submerged motor rotor has the beneficial effects that the submerged motor employing the rotor is arranged in a low-temperature submerged pump; a specific liquid guide channel of the rotor can effectively reduce the flow resistance of a low-temperature liquid; the transport efficiency is improved; improvement of the cooling effect of the motor is facilitated; and the power density of the motor is improved.
Description
Technical field
The invention belongs to machine field, especially relate to a kind of liquid rotor of diving.
Background technology
In recent years, natural gas is increasing in the use amount of countries in the world as a kind of clean energy resource, and liquefied natural gas (LNG) adopts LNG pump to carry usually.Due to the combustibility of natural gas and low temperature (-161 DEG C) characteristic of LNG, in order to ensure the safety of pump housing system, LNG pump generally adopts latent liquid type structure, and namely LNG pump motor used is immersed in low temperature LNG and works.Low temperature is dived the core component of liquid motor as LNG pump, and its runnability directly affects the operating characteristic of LNG pump.
Low temperature is in the market dived the cast-in aluminum squirrel cage rotor that liquid motor generally adopts, and the rigidity of structure is low, and reliability is poor.Because the electric conductivity of aluminium is poorer than copper, under identical operating condition, cast-aluminum rotor heating is comparatively large, easily causes the gasification of LNG liquid local, forms cavitation.In addition, due to rotor not having liquid-conveying ducts, LNG liquid flowing resistance is large, and transfer efficiency is low, and rotor can not get effective cooling, and rotor temperature rise is high, and rotor loss is large, and the operational efficiency of motor is low.
Summary of the invention
In view of this, the present invention is intended to propose a kind of liquid rotor of diving.
Technical scheme of the present invention is achieved in that
A kind of liquid rotor of diving, comprise rotor core and cast copper mouse cage, described rotor core is cylinder, and described cylinder is provided with central shaft hole, and described rotor core inner edge is provided with some delivery holes, and the outer rim of described rotor core is provided with some rotor;
Described cast copper mouse cage comprises two end ring and some slivers, and the two ends of described sliver are connected with two described end ring respectively, and described end ring lays respectively at the two ends of described rotor core, and described sliver is through described rotor.
Further, the cross section of described delivery hole is circular or oval.
Further, described rotor is open slot or closed slot.
Further, the cross section of described rotor is trapezium structure.
Further, described trapezium structure is shape wide outside and narrow inside.
Further, copper liquid is filled with in described rotor.
Further, described end ring and sliver are cast copper structure, connect into an entirety by die casting.
Further, described latent liquid rotor is used for liquid motor of diving, and is arranged in low temperature immersed pump.
The advantage that the present invention has and good effect are:
1, sliver of the present invention and end ring adopt cast copper material, and utilize cast copper die cast, can effectively increase rotor rigidity and reliability, reduce rotor loss and rotor heating, improve motor runnability;
2, the present invention utilizes the rotor of trapezium structure, and rotor current can be made more to be evenly distributed in whole sliver sectional area, effectively reduces kelvin effect to the impact of variable-frequency motor rotor bar electric current, improves rotor bar utilance and electric efficiency;
3, adopt the latent liquid motor of this rotor to be arranged in low temperature immersed pump, the distinctive liquid-conveying ducts of rotor can effectively reduce the flow resistance of cryogenic liquid, improves transfer efficiency, and contributes to improving cooling effect of motor, improves the power density of motor.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is vertical view of the present invention;
Fig. 2 is front view of the present invention.
In figure:
1, rotor core 2, rotor 3, central shaft hole 4, end ring
5, delivery hole 6, sliver
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
As depicted in figs. 1 and 2, the present invention includes rotor core 1 and cast copper mouse cage, described rotor core 1 is cylinder, described cylinder is provided with central shaft hole 3, the cross section that described rotor core 1 inner edge is provided with the circle distribution of centrally axis hole 3 is 6 circular delivery holes 5, and the outer rim of described rotor core 1 is provided with 26 rotor 2 (usage quantity is determined according to the performance requirement of the latent liquid motor using this programme) of remaining silent of the circle distribution of centrally axis hole 3; The cross section of described rotor 2 is the trapezium structure of shape wide outside and narrow inside, and copper liquid is filled in the inside.
Described cast copper mouse cage is formed by connecting by some cast copper slivers 6 and the die casting of two cast copper end ring 4, the two ends of described sliver 6 respectively end ring 4 described with two are connected, described end ring 4 lays respectively at the two ends of described rotor core 1, and with rotor core 1 close contact, described sliver 6 is through described rotor 2.
Described latent liquid rotor is used for liquid motor of diving, and is arranged in low temperature immersed pump.This latent liquid rotor efficiency is high, highly versatile, good reliability, good cooling results, frequency conversion superior performance.Concrete effect is as follows:
1, sliver of the present invention and end ring adopt cast copper material, and utilize cast copper die cast, can effectively increase rotor rigidity and reliability, reduce rotor loss and rotor heating, improve motor runnability;
2, the present invention utilizes the rotor of trapezium structure, and rotor current can be made more to be evenly distributed in whole sliver sectional area, effectively reduces kelvin effect to the impact of variable-frequency motor rotor bar electric current, improves rotor bar utilance and electric efficiency;
3, adopt the latent liquid motor of rotor to be arranged in low temperature immersed pump, the distinctive liquid-conveying ducts of rotor can effectively reduce the flow resistance of cryogenic liquid, improves transfer efficiency, and contributes to improving cooling effect of motor, improves the power density of motor.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (8)
1. a latent liquid rotor, comprise rotor core (1) and cast copper mouse cage, it is characterized in that: described rotor core (1) is cylinder, described cylinder is provided with central shaft hole (3), described rotor core (1) inner edge is provided with some delivery holes (5), and the outer rim of described rotor core (1) is provided with some rotor (2);
Described cast copper mouse cage comprises two end ring (4) and some slivers (6), the two ends of described sliver (6) are connected with two described end ring (4) respectively, described end ring (4) lays respectively at the two ends of described rotor core (1), and described sliver (6) is through described rotor (2).
2. latent liquid rotor according to claim 1, is characterized in that: the cross section of described delivery hole (5) is for circular or oval.
3. latent liquid rotor according to claim 1 and 2, is characterized in that: described rotor (2) is open slot or closed slot.
4. latent liquid rotor according to claim 3, is characterized in that: the cross section of described rotor (2) is trapezium structure.
5. latent liquid rotor according to claim 4, is characterized in that: described trapezium structure is shape wide outside and narrow inside.
6. latent liquid rotor according to claim 1 and 2, is characterized in that: described rotor is filled with copper liquid in (2).
7. latent liquid rotor according to claim 1 and 2, is characterized in that: described end ring (4) and sliver (6) are cast copper structure, connect into an entirety by die casting.
8. latent liquid rotor according to claim 1 and 2, is characterized in that: described latent liquid rotor is used for liquid motor of diving, and is arranged in low temperature immersed pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511014323.7A CN105471138A (en) | 2015-12-28 | 2015-12-28 | Rotor for submerged motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511014323.7A CN105471138A (en) | 2015-12-28 | 2015-12-28 | Rotor for submerged motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105471138A true CN105471138A (en) | 2016-04-06 |
Family
ID=55608565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511014323.7A Pending CN105471138A (en) | 2015-12-28 | 2015-12-28 | Rotor for submerged motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105471138A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56101351A (en) * | 1980-01-17 | 1981-08-13 | Toshiba Corp | Submerged motor |
| JPS60257738A (en) * | 1984-06-01 | 1985-12-19 | Hitachi Ltd | Cooling structure of underliquid rotary electric machine |
| JP2009071923A (en) * | 2007-09-11 | 2009-04-02 | Komatsu Ltd | Cooling structure of electric motor |
| JP2010193623A (en) * | 2009-02-18 | 2010-09-02 | Hitachi Ltd | Squirrel cage rotor for electric motor, electric motor, submersible pump, and method of manufacturing them |
| JP2014030284A (en) * | 2012-07-31 | 2014-02-13 | Mitsubishi Motors Corp | Rotary electric machine for vehicle |
| CN203522476U (en) * | 2013-09-23 | 2014-04-02 | 天津市益斯达燃气设备有限公司 | Low-temperature motor capable of preventing rotor from being damaged and utilized specially for immersed pump |
| CN203522347U (en) * | 2013-09-23 | 2014-04-02 | 天津市益斯达燃气设备有限公司 | Low-temperature motor equipped with insulating stator and utilized specially for immersed pump |
| CN104218757A (en) * | 2014-09-23 | 2014-12-17 | 永济新时速电机电器有限责任公司 | Closed slot cast aluminum rotor of motor |
| CN104333154A (en) * | 2014-11-17 | 2015-02-04 | 中国科学院电工研究所 | Immersed motor stator |
| CN105048744A (en) * | 2015-07-17 | 2015-11-11 | 中国科学院电工研究所 | Cast copper rotor for variable frequency motor |
| CN205304432U (en) * | 2015-12-28 | 2016-06-08 | 天津中科华瑞电气技术开发有限公司 | Liquid electric motor rotor dives |
| CN205453442U (en) * | 2016-02-23 | 2016-08-10 | 台州市天元电机泵业制造有限公司 | Single, three -phase copper rotor asynchronous motor |
-
2015
- 2015-12-28 CN CN201511014323.7A patent/CN105471138A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56101351A (en) * | 1980-01-17 | 1981-08-13 | Toshiba Corp | Submerged motor |
| JPS60257738A (en) * | 1984-06-01 | 1985-12-19 | Hitachi Ltd | Cooling structure of underliquid rotary electric machine |
| JP2009071923A (en) * | 2007-09-11 | 2009-04-02 | Komatsu Ltd | Cooling structure of electric motor |
| JP2010193623A (en) * | 2009-02-18 | 2010-09-02 | Hitachi Ltd | Squirrel cage rotor for electric motor, electric motor, submersible pump, and method of manufacturing them |
| JP2014030284A (en) * | 2012-07-31 | 2014-02-13 | Mitsubishi Motors Corp | Rotary electric machine for vehicle |
| CN203522476U (en) * | 2013-09-23 | 2014-04-02 | 天津市益斯达燃气设备有限公司 | Low-temperature motor capable of preventing rotor from being damaged and utilized specially for immersed pump |
| CN203522347U (en) * | 2013-09-23 | 2014-04-02 | 天津市益斯达燃气设备有限公司 | Low-temperature motor equipped with insulating stator and utilized specially for immersed pump |
| CN104218757A (en) * | 2014-09-23 | 2014-12-17 | 永济新时速电机电器有限责任公司 | Closed slot cast aluminum rotor of motor |
| CN104333154A (en) * | 2014-11-17 | 2015-02-04 | 中国科学院电工研究所 | Immersed motor stator |
| CN105048744A (en) * | 2015-07-17 | 2015-11-11 | 中国科学院电工研究所 | Cast copper rotor for variable frequency motor |
| CN205304432U (en) * | 2015-12-28 | 2016-06-08 | 天津中科华瑞电气技术开发有限公司 | Liquid electric motor rotor dives |
| CN205453442U (en) * | 2016-02-23 | 2016-08-10 | 台州市天元电机泵业制造有限公司 | Single, three -phase copper rotor asynchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160406 |
|
| RJ01 | Rejection of invention patent application after publication |