CN205304432U - Liquid electric motor rotor dives - Google Patents
Liquid electric motor rotor dives Download PDFInfo
- Publication number
- CN205304432U CN205304432U CN201521125892.4U CN201521125892U CN205304432U CN 205304432 U CN205304432 U CN 205304432U CN 201521125892 U CN201521125892 U CN 201521125892U CN 205304432 U CN205304432 U CN 205304432U
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- Prior art keywords
- rotor
- rotor core
- motor rotor
- immersed
- slot
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- Reciprocating Pumps (AREA)
Abstract
The utility model provides a liquid electric motor rotor dives, including rotor core and cast copper squirrel cage, rotor core is the cylinder, the cylinder is equipped with center bore, the rotor core inner edge is equipped with the drain hole, be equipped with the rotor groove in rotor core's the outer fringe, the cast copper squirrel cage includes two end links and a plurality of conducting bar, the both ends of conducting bar are respectively with two the end links is connected, the end links is located respectively rotor core's both ends, the conducting bar passes the rotor groove. The beneficial effects of the utility model are that: adopt the latent liquid motor of this rotor to install in the low temperature immersed pump, the distinctive drain passageway of rotor can effectively reduce cryogenic liquids's flow resistance, improves transport efficiency, helps improving the electric machine cooling effect moreover, improves the power density of motor.
Description
Technical field
This utility model belongs to machine field, especially relates to a kind of immersed motor rotor.
Background technology
In recent years, natural gas makes consumption increasing as a kind of clean energy resource in countries in the world, and liquefied natural gas (LNG) generally adopts LNG pump to carry. Due to low temperature (-161 DEG C) characteristic of the combustibility of natural gas and LNG, in order to ensure the safety of pump housing system, LNG pump is generally adopted latent liquid type structure, and namely motor used by LNG pump is immersed in low temperature LNG and works. Low temperature immersed motor is as the core component of LNG pump, and its runnability directly affects the operating characteristic of LNG pump.
The cast-in aluminum squirrel cage rotor that low temperature immersed motor in the market is commonly used, the rigidity of structure is low, and reliability is poor. Owing to the electric conductivity of aluminum is poorer than copper, under identical operating condition, cast-aluminum rotor heating is bigger, it is easy to causes the gasification of LNG liquid local, forms cavitation. Additionally, due to do not have liquid-conveying ducts on rotor, LNG liquid flowing resistance is big, and transfer efficiency is low, and rotor can not get effective cooling, and rotor temperature rise is high, and rotor loss is big, and the operational efficiency of motor is low.
Summary of the invention
In view of this, this utility model is directed to a kind of immersed motor rotor.
The technical solution of the utility model is achieved in that
A kind of immersed motor rotor, including 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 slot;
Described cast copper mouse cage includes 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, the described sliver described rotor slot of traverse.
Further, the cross section of described delivery hole is circular or oval.
Further, described rotor slot is open slot or closed slot.
Further, the cross section of described rotor slot is trapezium structure.
Further, described trapezium structure is shape wide outside and narrow inside.
Further, it is filled with copper liquid in described rotor slot.
Further, described end ring and sliver are cast copper structure, connect into an entirety by die casting.
Further, described immersed motor rotor is used for immersed motor, is arranged in low temperature immersed pump.
This utility model has the advantage that and has the benefit effect that
1, sliver of the present utility model and end ring adopt cast copper material, and utilize cast copper die cast, it is possible to be effectively increased rotor rigidity and reliability, reduce rotor loss and rotor heating, improve motor runnability;
2, this utility model utilizes the rotor slot of trapezium structure, it is possible to make rotor current more be evenly distributed in whole sliver sectional area, effectively reduces the kelvin effect impact on frequency conversion motor rotor bar electric current, improves rotor bar utilization rate and electric efficiency;
3, the immersed motor adopting this rotor is arranged in low temperature immersed pump, and 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 that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is top view of the present utility model;
Fig. 2 is front view of the present utility model.
In figure:
1, rotor core 2, rotor slot 3, central shaft hole 4, end ring
5, delivery hole 6, sliver
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described.
As depicted in figs. 1 and 2, this utility model 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 along central shaft hole 3 is 6 circular delivery holes 5, and the outer rim of described rotor core 1 is provided with 26 rotor slot 2 (usage quantity is determined) of remaining silent of the circle distribution along central shaft hole 3 according to the performance requirement of the immersed motor using this programme; The trapezium structure that cross section is shape wide outside and narrow inside of described rotor slot 2, and the inside fills copper liquid.
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 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 is in close contact with rotor core 1, the described sliver 6 described rotor slot 2 of traverse.
Described immersed motor rotor is used for immersed motor, is arranged in low temperature immersed pump. This immersed motor rotor efficiency height, highly versatile, good reliability, good cooling results, frequency conversion superior performance. Concrete effect is as follows:
1, sliver of the present utility model and end ring adopt cast copper material, and utilize cast copper die cast, it is possible to be effectively increased rotor rigidity and reliability, reduce rotor loss and rotor heating, improve motor runnability;
2, this utility model utilizes the rotor slot of trapezium structure, it is possible to make rotor current more be evenly distributed in whole sliver sectional area, effectively reduces the kelvin effect impact on frequency conversion motor rotor bar electric current, improves rotor bar utilization rate and electric efficiency;
3, adopting the immersed 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 embodiment of the present utility model is described in detail, but described content has been only preferred embodiment of the present utility model, it is impossible to be considered for limiting practical range of the present utility model.All equalizations made according to this utility model application range change and improvement etc., all should still belong within patent covering scope of the present utility model.
Claims (8)
1. an immersed motor rotor, including 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 slot (2);
Described cast copper mouse cage includes 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), described sliver (6) the described rotor slot of traverse (2).
2. immersed motor rotor according to claim 1, it is characterised in that: the cross section of described delivery hole (5) is circular or oval.
3. immersed motor rotor according to claim 1 and 2, it is characterised in that: described rotor slot (2) is open slot or closed slot.
4. immersed motor rotor according to claim 3, it is characterised in that: the cross section of described rotor slot (2) is trapezium structure.
5. immersed motor rotor according to claim 4, it is characterised in that: described trapezium structure is shape wide outside and narrow inside.
6. immersed motor rotor according to claim 1 and 2, it is characterised in that: described rotor slot is filled with copper liquid in (2).
7. immersed motor rotor according to claim 1 and 2, it is characterised in that: described end ring (4) and sliver (6) they are cast copper structure, connect into an entirety by die casting.
8. immersed motor rotor according to claim 1 and 2, it is characterised in that: described immersed motor rotor is used for immersed motor, is arranged in low temperature immersed pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521125892.4U CN205304432U (en) | 2015-12-28 | 2015-12-28 | Liquid electric motor rotor dives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521125892.4U CN205304432U (en) | 2015-12-28 | 2015-12-28 | Liquid electric motor rotor dives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205304432U true CN205304432U (en) | 2016-06-08 |
Family
ID=56469271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521125892.4U Active CN205304432U (en) | 2015-12-28 | 2015-12-28 | Liquid electric motor rotor dives |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205304432U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471138A (en) * | 2015-12-28 | 2016-04-06 | 天津中科华瑞电气技术开发有限公司 | Rotor for submerged motor |
| CN110718975A (en) * | 2019-11-13 | 2020-01-21 | 长沙宁湖机械设备有限公司 | Squirrel-cage rotor capable of improving strength of conducting bar |
-
2015
- 2015-12-28 CN CN201521125892.4U patent/CN205304432U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471138A (en) * | 2015-12-28 | 2016-04-06 | 天津中科华瑞电气技术开发有限公司 | Rotor for submerged motor |
| CN110718975A (en) * | 2019-11-13 | 2020-01-21 | 长沙宁湖机械设备有限公司 | Squirrel-cage rotor capable of improving strength of conducting bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |