CN104901480A - Non-salient pole generator having encircling water-cooled type stator end portion iron core cooling system - Google Patents
Non-salient pole generator having encircling water-cooled type stator end portion iron core cooling system Download PDFInfo
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- CN104901480A CN104901480A CN201510311395.1A CN201510311395A CN104901480A CN 104901480 A CN104901480 A CN 104901480A CN 201510311395 A CN201510311395 A CN 201510311395A CN 104901480 A CN104901480 A CN 104901480A
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Abstract
The invention, which relates to the motor filed, discloses a non-salient pole generator having an encircling water-cooled type stator end portion iron core cooling system. With the generator, a problem that the stator end portion iron core temperature of the existing non-salient pole generator is too high can be solved. A pressure finger is pressed at an outer side surface of a first-segment stator end portion iron core and is in contact with an encircling water pipe; and the encircling water pipe is installed inside the inner and outer side surfaces of the stator end portion iron core. A water pipe valve is located at an inlet of a water-circulation cooling device; the water pipe valve is connected with the upper end of the encircling water pipe; and the turning parts of the encircling water pipe are respectively located at the bottom tooth part and the yoke top part of the stator end portion iron core. An outlet of the water-circulation cooling device is connected with the lower end of the encircling water pipe. Water flowing out of the outlet of the water-circulation cooling device is cooled and then circulates to the inlet of the water-circulation cooling device, thereby forming an encircling water-cooled type cooling system for the stator end portion iron core. According to the invention, the cooling effect of the stator end portion iron core is enhanced; the structure is simple; and the generator can be realized conveniently.
Description
Technical field
The present invention relates to the non salient pole generator had around water-cooled stator end core cooling system, belong to machine field.
Background technology
The increase of large-scale non salient pole generator single-machine capacity can cause the close obvious increase of generator end region magnetic, and then the loss of stator end core and temperature rise sharply increase, will thermal expansion be there is in the serious stator end core that generates heat, be subject to stator end core warpage and distortion because of squeezing action after the effect of contraction of generator inner fixing member, stator end core is caused to loosen, particularly at non salient pole generator special operation condition, such as during leading phase operation, the too high stator end core of temperature even can occur to rupture and the phenomenon of extruding stator winding, serious words can burn stator end core, useful life and the safe operation of non salient pole generator are had influence on.
Traditional stator end core is by the solid construction of silicon steel plate stacking.The loss of stator end core is higher, ventilating and cooling effect is poor, the heat produced can not be taken away by the cooling fluid of surrounding in time, cause the temperature of stator end core higher, need to adopt rational cooling technology to reduce the temperature of stator end core, make it in the temperature range allowed, extend the useful life of non salient pole generator.
summary of the invention:
The object of this invention is to provide the non salient pole generator had around water-cooled stator end core cooling system, to solve stator end core due to too high and large with other stator core segment temperature difference problem of the stator end core temperature that loss is high and ventilating and cooling weak effect causes, effectively improve the cooling effect of non salient pole generator internal stator end core.
The non salient pole generator had around water-cooled stator end core cooling system of the present invention, it comprises stator end core, circulating type water pipe, aqueduct valve, water circulation cooling device, stator Radial ventilation duct, end finger, pressing plate, copper shield, stator winding, stator slot wedge, layer insulation and rotor.Stator end core is by first paragraph stator end core, and second segment stator end core, the 3rd section of stator end core and the 4th section of stator end core composition, circulating type water pipe is made up of left side circulating type water pipe and right side circulating type water pipe.End finger is fitted in the outer surface of first paragraph stator end core, end finger contacts with circulating type water pipe, circulating type water pipe is arranged on the inside of outer surface in stator end core, aqueduct valve is positioned at the entry position of water circulation cooling device, aqueduct valve is connected with the upper end of circulating type water pipe, left side circulating type water pipe and the right side circulating type water pipe of circulating type water pipe are fixed by stator end core, bottom the tooth that the turning of circulating type water pipe lays respectively at stator end core and yoke top, the outlet of water circulation cooling device is connected with the lower end of circulating type water pipe, after supercooling, the entrance of water circulation cooling device is circulated again into from the water of water circulation cooling device outlet outflow, constitute around water-cooled stator end core cooling system.
The cross section of circulating type water pipe is square, wherein three surfaces of circulating type water pipe contact with stator end core, another surface contacts with the cooling fluid in end finger or stator Radial ventilation duct, cooling the temperature of cooling fluid in the temperature and stator Radial ventilation duct that effectively can reduce again end finger while stator end core.The square length of side of circulating type water pipe cross section should be less than or equal to 1/4 of stator end core 1 thickness.The speed of circulating type water pipe inner cooling water can be controlled by aqueduct valve, and the speeds control of circulating type water pipe inner cooling water is at 1 m/s-4 m/s.
As preferably, teeth portion centre position and the yoke position of described first paragraph stator end core all offer stator shaft orientation ventilation hole, stator shaft orientation ventilation hole is through whole first paragraph stator end core, the cooling fluid in non salient pole generator end regions is made directly to enter in stator Radial ventilation duct, accelerate the speed of cooling fluid in stator Radial ventilation duct, significantly reduce the temperature of the serious first paragraph stator end core of heating.
As preferably, the surface of the described stator end core contacted with cooling fluid in stator Radial ventilation duct offers rectangular heat dissipation groove, rectangular heat dissipation groove is positioned at teeth portion centre position and the yoke position of stator end core, and the degree of depth of rectangular heat dissipation groove is less than or equal to 1/4 of stator end core thickness.This arranges the contact area that can increase cooling fluid in stator end core and stator Radial ventilation duct significantly, enhances the heat-sinking capability of stator end core, reduces loss and the temperature of stator end core.
Advantage of the present invention: the maximum temperature of non salient pole generator often appears at stator end core, after in the solid stator end core that original heating is serious, circulating type water-cooling system is installed in the inside of outer surface, this circulating type water-cooling system can take away the heat of stator end core effectively on the one hand, reduces the temperature of stator end core significantly.Can also reduce the temperature of end finger and the temperature of stator Radial ventilation duct inner fluid on the other hand, the fluid in cooled stator Radial ventilation duct reduce further again the temperature of stator end core conversely.Structure of the present invention is simple, is convenient to realize, and effectively enhances the cooling effect of stator end core and end finger, reduce the stator region temperature difference vertically, reduce the loss of stator end core simultaneously, save the material of stator end core, extend the useful life of non salient pole generator.
accompanying drawing illustrates:
For ease of illustrating, the present invention is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is the axial cutaway view around water-cooled stator end core cooling system of the present invention;
Fig. 2 is the circumferencial direction cutaway view around water-cooled stator end core cooling system of the present invention;
Fig. 3 is the circumferencial direction cutaway view around water-cooled stator end core cooling system described in the specific embodiment of the invention two;
Fig. 4 is the circumferencial direction cutaway view around water-cooled stator end core cooling system described in the specific embodiment of the invention three.
In figure: 1-stator end core; 2-circulating type water pipe; 3-aqueduct valve; 4-water circulation cooling device; 5-stator Radial ventilation duct; 6-end finger; 7-pressing plate; 8-copper shield; 9-stator winding; 10-stator slot wedge; 11-layer insulation; 12-rotor; 13-stator shaft orientation ventilation hole; 14-rectangular heat dissipation groove.In figure, arrow is depicted as the flow direction of circulating type water pipe inner cooling water.
embodiment:
For making the object, technical solutions and advantages of the present invention clearly understand, below by the specific embodiment shown in accompanying drawing, the present invention is described.But should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
Embodiment one: composition graphs 1 and Fig. 2 illustrate present embodiment, the non salient pole generator had around water-cooled stator end core cooling system described in present embodiment, it comprises stator end core 1, circulating type water pipe 2, aqueduct valve 3, water circulation cooling device 4, stator Radial ventilation duct 5, end finger 6, pressing plate 7, copper shield 8, stator winding 9, stator slot wedge 10, layer insulation 11 and rotor 12.Stator end core 1 is by first paragraph stator end core 1-1, second segment stator end core 1-2,3rd section of stator end core 1-3 and the 4th section stator end core 1-4 forms, and circulating type water pipe 2 is made up of left side circulating type water pipe 2-1 and right side circulating type water pipe 2-2.End finger 6 is fitted in the outer surface of first paragraph stator end core 1-1, end finger 6 contacts with circulating type water pipe 2, circulating type water pipe 2 is arranged on the inside of outer surface in stator end core 1, aqueduct valve 3 is positioned at the entry position of water circulation cooling device 4, aqueduct valve 3 is connected with the upper end of circulating type water pipe 2, the left side circulating type water pipe 2-1 of circulating type water pipe 2 and right side circulating type water pipe 2-2 is fixed by stator end core 1, bottom the tooth that the turning of circulating type water pipe 2 lays respectively at stator end core 1 and yoke top, the outlet of water circulation cooling device 4 is connected with the lower end of circulating type water pipe 2, the entrance that the water flowed out is circulated again into water circulation cooling device 4 after supercooling is exported from water circulation cooling device 4, constitute around water-cooled stator end core cooling system.
The cross section of circulating type water pipe 2 is square, wherein three surfaces of circulating type water pipe 2 contact with stator end core 1, another surface contacts with the cooling fluid in end finger 6 or stator Radial ventilation duct 5, cooling the temperature of cooling fluid in the temperature and stator Radial ventilation duct 5 that effectively can reduce again end finger 6 while stator end core 1.The square length of side of circulating type water pipe 2 cross section should be less than or equal to 1/4 of stator end core 1 thickness, and the present embodiment is taken as 7 mm.The speed of circulating type water pipe 2 inner cooling water can be controlled by aqueduct valve 3, and the speeds control of circulating type water pipe 2 inner cooling water is at 1 m/s-4 m/s, and the present embodiment is taken as 2 m/s.
After in original solid stator end core 1, circulating type water-cooling system is installed in the inside of outer surface, the cooling water in circulating type water pipe 2 can take away the heat of stator end core 1 effectively, significantly reduces the temperature of stator end core 1.In addition, can also reduce the temperature of the end finger 6 contacted with circulating type water pipe 2 and the temperature of stator Radial ventilation duct 5 inner fluid, the fluid in cooled stator Radial ventilation duct 5 reduce further again the temperature of stator end core 1 conversely.Controlled the speed of circulating type water pipe 2 inner cooling water by aqueduct valve 3, and then control the temperature of stator end core 1, reduce the stator region temperature difference vertically.
Embodiment two: composition graphs 3 illustrates present embodiment, the difference of present embodiment and execution mode one is that it all offers stator shaft orientation ventilation hole 13 in the teeth portion centre position of first paragraph stator end core 1-1 and yoke position, stator shaft orientation ventilation hole 13 is through whole first paragraph stator end core 1-1, the cooling fluid in non salient pole generator end regions is made directly to enter in stator Radial ventilation duct 5, accelerate the speed of cooling fluid in stator Radial ventilation duct 5, significantly reduce the temperature of the serious first paragraph stator end core 1-1 of heating.Other composition and annexation identical with execution mode one.
Embodiment three: composition graphs 4 illustrates present embodiment, present embodiment and the difference of execution mode one are that it offers rectangular heat dissipation groove 14 on the surface of the stator end core 1 contacted with cooling fluid in stator Radial ventilation duct 5, rectangular heat dissipation groove 14 is positioned at teeth portion centre position and the yoke position of stator end core 1, the degree of depth of rectangular heat dissipation groove 14 is less than or equal to 1/4 of stator end core 1 thickness, and the present embodiment is taken as 5 mm.This arranges and can increase stator end core 1 and the contact area of cooling fluid in stator Radial ventilation duct 5 significantly, enhances the heat-sinking capability of stator end core 1, reduces loss and the temperature of stator end core 1.Other composition and annexation identical with execution mode one.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (3)
1. there is the non salient pole generator around water-cooled stator end core cooling system, it is characterized in that: it comprises stator end core (1), circulating type water pipe (2), aqueduct valve (3), water circulation cooling device (4), stator Radial ventilation duct (5), end finger (6), pressing plate (7), copper shield (8), stator winding (9), stator slot wedge (10), layer insulation (11) and rotor (12), end finger (6) is fitted in the outer surface of first paragraph stator end core (1-1), end finger (6) contacts with circulating type water pipe (2), circulating type water pipe (2) is arranged on the inside of stator end core (1) interior outer surface, aqueduct valve (3) is positioned at the entry position of water circulation cooling device (4), aqueduct valve (3) is connected with the upper end of circulating type water pipe (2), left side circulating type water pipe (2-1) of circulating type water pipe (2) and right side circulating type water pipe (2-2) are fixed by stator end core (1), bottom the tooth that the turning of circulating type water pipe (2) lays respectively at stator end core (1) and yoke top, the outlet of water circulation cooling device (4) is connected with the lower end of circulating type water pipe (2), after supercooling, the entrance of water circulation cooling device (4) is circulated again into from the water of water circulation cooling device (4) outlet outflow, constitute around water-cooled stator end core cooling system.
2. the non salient pole generator had around water-cooled stator end core cooling system according to claim 1, it is characterized in that: teeth portion centre position and the yoke position of described first paragraph stator end core (1-1) all offer stator shaft orientation ventilation hole (13), and stator shaft orientation ventilation hole (13) is through whole first paragraph stator end core (1-1).
3. the non salient pole generator had around water-cooled stator end core cooling system according to claim 1, it is characterized in that: the surface of the described stator end core (1) contacted with stator Radial ventilation duct (5) interior cooling fluid offers rectangular heat dissipation groove (14), rectangular heat dissipation groove (14) is positioned at teeth portion centre position and the yoke position of stator end core (1), and the degree of depth of rectangular heat dissipation groove (14) is less than or equal to 1/4 of stator end core (1) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311395.1A CN104901480B (en) | 2015-06-09 | 2015-06-09 | With the non salient pole generator around water-cooled stator end core cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510311395.1A CN104901480B (en) | 2015-06-09 | 2015-06-09 | With the non salient pole generator around water-cooled stator end core cooling system |
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| CN104901480A true CN104901480A (en) | 2015-09-09 |
| CN104901480B CN104901480B (en) | 2017-09-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762955A (en) * | 2016-05-11 | 2016-07-13 | 哈尔滨理工大学 | Hoop winding coil groove-type hydraulic generator stator facilitating heat dissipation |
| CN105827055A (en) * | 2016-05-11 | 2016-08-03 | 哈尔滨理工大学 | Turbo-generator with spiral bidirectional water-cooled end portion cooling system |
| CN114825783A (en) * | 2022-05-04 | 2022-07-29 | 哈尔滨理工大学 | Electromagnetic shielding and cooling system for steam turbine generator structural part |
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| US3447002A (en) * | 1965-03-17 | 1969-05-27 | Asea Ab | Rotating electrical machine with liquid-cooled laminated stator core |
| SU942211A1 (en) * | 1977-06-22 | 1982-07-07 | Предприятие П/Я Р-6794 | Cooling element |
| JPH0279747A (en) * | 1988-09-14 | 1990-03-20 | Tokyo Electric Power Co Inc:The | Cooling device for vertical-shaft rotary electric machine |
| US6304011B1 (en) * | 1996-08-09 | 2001-10-16 | The Turbo Genset Company Limited | Rotary electrical machines |
| CN2613921Y (en) * | 2003-03-06 | 2004-04-28 | 上海汽轮发电机有限公司 | End copper shielded double-water internal cooling turbine generator |
| CN103595189A (en) * | 2013-11-05 | 2014-02-19 | 北京交通大学 | Annular water internal cooling structure laid in stator ventilation ditch |
| US20140183988A1 (en) * | 2012-12-31 | 2014-07-03 | Teco-Westinghouse Motor Company | Assemblies For Cooling Electric Machines |
| CN204721152U (en) * | 2015-06-09 | 2015-10-21 | 哈尔滨理工大学 | There is the non salient pole generator around water-cooled stator end core cooling system |
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2015
- 2015-06-09 CN CN201510311395.1A patent/CN104901480B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3447002A (en) * | 1965-03-17 | 1969-05-27 | Asea Ab | Rotating electrical machine with liquid-cooled laminated stator core |
| SU942211A1 (en) * | 1977-06-22 | 1982-07-07 | Предприятие П/Я Р-6794 | Cooling element |
| JPH0279747A (en) * | 1988-09-14 | 1990-03-20 | Tokyo Electric Power Co Inc:The | Cooling device for vertical-shaft rotary electric machine |
| US6304011B1 (en) * | 1996-08-09 | 2001-10-16 | The Turbo Genset Company Limited | Rotary electrical machines |
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| CN103595189A (en) * | 2013-11-05 | 2014-02-19 | 北京交通大学 | Annular water internal cooling structure laid in stator ventilation ditch |
| CN204721152U (en) * | 2015-06-09 | 2015-10-21 | 哈尔滨理工大学 | There is the non salient pole generator around water-cooled stator end core cooling system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762955A (en) * | 2016-05-11 | 2016-07-13 | 哈尔滨理工大学 | Hoop winding coil groove-type hydraulic generator stator facilitating heat dissipation |
| CN105827055A (en) * | 2016-05-11 | 2016-08-03 | 哈尔滨理工大学 | Turbo-generator with spiral bidirectional water-cooled end portion cooling system |
| CN105762955B (en) * | 2016-05-11 | 2018-01-23 | 哈尔滨理工大学 | A kind of circular winding groove type hydraulic generator stator for being beneficial to radiating |
| CN105827055B (en) * | 2016-05-11 | 2018-03-30 | 哈尔滨理工大学 | Steam turbine generator with the two-way water-cooled end cooling system of spiral |
| CN114825783A (en) * | 2022-05-04 | 2022-07-29 | 哈尔滨理工大学 | Electromagnetic shielding and cooling system for steam turbine generator structural part |
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| CN104901480B (en) | 2017-09-05 |
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