CN204721127U - Rotor surface fan blade type non salient pole generator ventilation cooling structure - Google Patents
Rotor surface fan blade type non salient pole generator ventilation cooling structure Download PDFInfo
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- CN204721127U CN204721127U CN201520392243.4U CN201520392243U CN204721127U CN 204721127 U CN204721127 U CN 204721127U CN 201520392243 U CN201520392243 U CN 201520392243U CN 204721127 U CN204721127 U CN 204721127U
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Abstract
The utility model discloses rotor surface fan blade type non salient pole generator ventilation cooling structure, it relates to machine field.The utility model is in order to solve the problem of each member temperature height of existing non salient pole generator and cooling effect difference.Rotor fan blade wing is along the circumferential direction arranged on the outer round surface of rotor core, rotor fan blade wing is vertically through whole rotor core, a rotor fan blade wing is all installed at the outer round surface place of the little tooth of each rotor, and multiple rotor fan blade wing is installed at the outer round surface place of each rotor canine tooth.Rotor fan blade wing becomes certain inclination angle with the tangent line of rotor core outer round surface, and the direction, inclination angle of rotor fan blade wing is identical with the direction that rotor core rotates.The utility model structure is simple, effectively increases the total flow of cooling fluid in non salient pole generator, accelerates the speed entering cooling fluid in stator Radial ventilation duct, improve the cooling effect of each component in generator, be convenient to actual production and application.
Description
Technical field
The utility model relates to rotor surface fan blade type non salient pole generator ventilation cooling structure, belongs to machine field.
Background technology
Large-scale air cooling non salient pole generator, as the important energy source conversion equipment in power station, not only affects the reliability of electric power system once break down, and also can cause huge economic loss.Non salient pole generator is when specified operation, and under the effect of electromagnetic field, in generator, each component produces loss, and the loss of each component is taken away by the coolant of surrounding in the form of heat, and rational aeration structure is most important to the temperature of each component in cooling non salient pole generator.Especially, when Non-salient Pole Generator Phase-advancement Operation, in generator, the loss of each component and temperature sharply increase, the as easy as rolling off a log rated temperature-rise exceeding insulating material in generator, cause non salient pole generator stator winding inter-turn short circuit, cause non salient pole generator failure operation, have influence on the stability of network system.
The heat of each component in generator is taken away in order to the cooling fluid in non salient pole generator can be utilized fully, rational ventilation cooling structure is more had with most economical air quantity to improve the ventilating and cooling ability of generator with regard to needing to adopt, ensure that the serious component of generator internal heat generation is in its temperature range allowed, and guarantees the safe and reliable operation of non salient pole generator.
Summary of the invention
The purpose of this utility model is to provide rotor surface fan blade type non salient pole generator ventilation cooling structure, to solve non salient pole generator due to too high and that in axial direction each component temperature difference the is large problem of each member temperature in ventilating and cooling weak effect and the unreasonable generator caused of aeration structure design, effectively improve the ventilating and cooling effect of non salient pole generator.
Rotor surface fan blade type non salient pole generator ventilation cooling structure of the present utility model, it comprises rotor core, rotor fan blade wing, air gap, stator winding, layer insulation, stator slot wedge, stator core, stator Radial ventilation duct, rotor secondary groove, rotor windings and rotor slot wedge.Rotor core is made up of the little tooth of rotor, rotor canine tooth and rotor yoke.Stator winding is arranged on the internal circular surfaces position near stator core, and stator core is arranged vertically equably, leaves stator Radial ventilation duct between stator core.Be air gap between the internal circular surfaces of stator core and the outer round surface of rotor core, rotor fan blade wing is along the circumferential direction arranged on the outer round surface of rotor core, and rotor fan blade wing is vertically through whole rotor core, and the quantity of rotor fan blade wing is 25-55.A rotor fan blade wing is all installed at the outer round surface place of the little tooth of each rotor, and the quantity of the outer round surface place installation rotor fan blade wing of each rotor canine tooth is 5-10.Rotor fan blade wing becomes 55 ° of-75 ° of inclinations angle with the tangent line of rotor core outer round surface.The direction, inclination angle of rotor fan blade wing is identical with the direction that rotor core rotates.The height of rotor fan blade wing needs to be less than or equal to 1/2 of air gap height between the outer round surface of rotor core and the internal circular surfaces of stator core.
As preferably, described rotor fan blade wing is perpendicular to the tangent line of rotor core outer round surface, and this structure reduces the difficulty of processing while improving non salient pole generator cooling effect.
As preferably, the quantity of described rotor fan blade wing reduces half at the little tooth place of rotor, namely at the outer round surface place every a little tooth of rotor, a rotor fan blade wing is installed, equally, the quantity of rotor fan blade wing reduces half at each rotor canine tooth place, and this structure reduces the cost of processing while improving non salient pole generator cooling effect.
Advantage of the present utility model: install the rotor fan blade wing with certain angle of inclination on the smooth surface of original rotor core, forms rotor surface fan blade type cooling structure.This rotor surface fan blade type cooling structure can drive the cooling fluid between rotor in air gap to rotate on the one hand, cooling fluid is got rid of in stator Radial ventilation duct with speed faster, accelerate the speed entering cooling fluid in stator Radial ventilation duct, improve cooling fluid in stator Radial ventilation duct and take away the ability of heat, significantly reduce the temperature of each component in stator region, especially more obvious to the cooling effect of the serious stator winding of heating and stator core teeth portion, stator winding temperature difference is vertically reduced, thermal stress in stator region also correspondingly reduces.The total flow in non salient pole generator can also be increased after rotor fan blade wing is installed on the other hand significantly, facilitate the circulation of electric generator inner cooling but fluid, improve the utilance of cooling fluid.The utility model structure is simple, significantly increases the total flow of cooling fluid in non salient pole generator, accelerates the speed of cooling fluid in stator Radial ventilation duct, improve the cooling effect of each component in generator, be convenient to actual production and application.
accompanying drawing illustrates:
For ease of illustrating, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is the axial cutaway view of non salient pole generator described in the utility model;
Fig. 2 is the circumferencial direction cutaway view of non salient pole generator rotor described in the utility model.
In figure: 1-rotor core; 2-rotor fan blade wing; 3-air gap; 4-stator winding; 5-layer insulation; 6-stator slot wedge; 7-stator core; 8-stator Radial ventilation duct; The secondary groove of 9-rotor; 10-rotor windings; 11-rotor slot wedge.
embodiment:
For making the purpose of this utility model, technical scheme and advantage clearly understand, below by the specific embodiment shown in accompanying drawing, the utility model is described.But should be appreciated that, these describe just exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
As depicted in figs. 1 and 2, this embodiment by the following technical solutions: present embodiment comprises rotor core 1, rotor fan blade wing 2, air gap 3, stator winding 4, layer insulation 5, stator slot wedge 6, stator core 7, stator Radial ventilation duct 8, rotor secondary groove 9, rotor windings 10 and rotor slot wedge 11.Rotor core 1 is made up of the little tooth 1-1 of rotor, rotor canine tooth 1-2 and rotor yoke 1-3.Stator winding 4 is arranged on the internal circular surfaces position near stator core 7, and stator core 7 is arranged vertically equably, leaves stator Radial ventilation duct 8 between stator core 7.Be air gap 3 between the internal circular surfaces of stator core 7 and the outer round surface of rotor core 1, rotor fan blade wing 2 is along the circumferential direction arranged on the outer round surface of rotor core 1, rotor fan blade wing 2 is vertically through whole rotor core 1, the quantity of rotor fan blade wing 2 is 25-55, and the present embodiment is taken as 44.A rotor fan blade wing 2 is all installed at the outer round surface place of the little tooth 1-1 of each rotor, and the quantity of the outer round surface place installation rotor fan blade wing 2 of each rotor canine tooth 1-2 is 5-10, and the present embodiment is taken as 7.Rotor fan blade wing 2 becomes 55 ° of-75 ° of inclinations angle with the tangent line of rotor core 1 outer round surface, and the present embodiment is taken as 60 ° of inclinations angle.The direction, inclination angle of rotor fan blade wing 2 is identical with the direction that rotor core 1 rotates.The height of rotor fan blade wing 2 needs to be less than or equal to 1/2 of air gap 3 height between the outer round surface of rotor core 1 and the internal circular surfaces of stator core 7, and the height of the present embodiment rotor fan blade wing 2 is taken as the height of 2/5 air gap 3.
Further, described rotor fan blade wing 2 is perpendicular to the tangent line of rotor core 3 outer round surface, and this structure reduces the difficulty of processing while improving non salient pole generator cooling effect.
Further, the quantity of described rotor fan blade wing 2 reduces half at rotor little tooth 1-1 place, namely at the outer round surface place every a little tooth 1-1 of rotor, a rotor fan blade wing 2 is installed, equally, the quantity of rotor fan blade wing 2 reduces half at each rotor canine tooth 1-2 place, and this structure reduces the cost of processing while improving non salient pole generator cooling effect.
The smooth surface of original rotor core 1 is installed the rotor fan blade wing 2 with certain angle of inclination.When the specified operation of non salient pole generator, the rotor on otherwise smooth surface does not possess the ability driving cooling fluid flowing around, but after adding cartridge rotor fan blade wing 2, rotor fan blade wing 2 is similar to fan leaf, when rotor core 1 rotates together with rotor fan blade wing 2, rotor fan blade wing 2 drives the cooling fluid in air gap 3 to rotate, cooling fluid is got rid of in stator Radial ventilation duct 8 with speed faster, accelerate the speed of cooling fluid in stator Radial ventilation duct 8, stator core 7 surface coefficient of heat transfer value is increased further, improve cooling fluid in stator Radial ventilation duct 8 and take away the ability of heat, the temperature of each component in stator region can be reduced significantly.The total flow in non salient pole generator can also be increased after rotor fan blade wing 2 is installed significantly, facilitate the circulation of electric generator inner cooling but fluid, improve the utilance of cooling fluid.
More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. rotor surface fan blade type non salient pole generator ventilation cooling structure, it is characterized in that: it comprises rotor core (1), rotor fan blade wing (2), air gap (3), stator winding (4), layer insulation (5), stator slot wedge (6), stator core (7), stator Radial ventilation duct (8), the secondary groove (9) of rotor, rotor windings (10) and rotor slot wedge (11), rotor core (1) is by the little tooth of rotor (1-1), rotor canine tooth (1-2) and rotor yoke (1-3) composition, stator winding (4) is arranged on the internal circular surfaces position near stator core (7), stator core (7) is arranged vertically equably, stator Radial ventilation duct (8) is left between stator core (7), be air gap (3) between the internal circular surfaces of stator core (7) and the outer round surface of rotor core (1), rotor fan blade wing (2) is along the circumferential direction arranged on the outer round surface of rotor core (1), rotor fan blade wing (2) is vertically through whole rotor core (1), the quantity of rotor fan blade wing (2) is 25-55, a rotor fan blade wing (2) is all installed at the outer round surface place of the little tooth of each rotor (1-1), and the quantity at outer round surface place installation rotor fan blade wing (2) of each rotor canine tooth (1-2) is 5-10, rotor fan blade wing (2) becomes 55 ° of-75 ° of inclinations angle with the tangent line of rotor core (1) outer round surface, the direction, inclination angle of rotor fan blade wing (2) is identical with the direction that rotor core (1) rotates, the height of rotor fan blade wing (2) needs to be less than or equal to 1/2 of air gap (3) height between the outer round surface of rotor core (1) and the internal circular surfaces of stator core (7).
2. rotor surface fan blade type non salient pole generator ventilation cooling structure according to claim 1, is characterized in that: described rotor fan blade wing (2) is perpendicular to the tangent line of rotor core (3) outer round surface.
3. rotor surface fan blade type non salient pole generator ventilation cooling structure according to claim 1, it is characterized in that: the quantity of described rotor fan blade wing (2) reduces half at the little tooth of rotor (1-1) place, namely at the outer round surface place every a little tooth of rotor (1-1), a rotor fan blade wing (2) is installed, equally, the quantity of rotor fan blade wing (2) reduces half at each rotor canine tooth (1-2) place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392243.4U CN204721127U (en) | 2015-06-09 | 2015-06-09 | Rotor surface fan blade type non salient pole generator ventilation cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392243.4U CN204721127U (en) | 2015-06-09 | 2015-06-09 | Rotor surface fan blade type non salient pole generator ventilation cooling structure |
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| CN204721127U true CN204721127U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520392243.4U Active CN204721127U (en) | 2015-06-09 | 2015-06-09 | Rotor surface fan blade type non salient pole generator ventilation cooling structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487130A (en) * | 2016-12-16 | 2017-03-08 | 湘潭电机股份有限公司 | A kind of air cooling non salient pole generator solid rotor aeration structure and non salient pole generator |
| CN110676963A (en) * | 2019-10-10 | 2020-01-10 | 哈尔滨理工大学 | Variable-speed pumped storage generator motor with shaft-radial two-way regional forced flow-increasing rotor |
-
2015
- 2015-06-09 CN CN201520392243.4U patent/CN204721127U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487130A (en) * | 2016-12-16 | 2017-03-08 | 湘潭电机股份有限公司 | A kind of air cooling non salient pole generator solid rotor aeration structure and non salient pole generator |
| CN110676963A (en) * | 2019-10-10 | 2020-01-10 | 哈尔滨理工大学 | Variable-speed pumped storage generator motor with shaft-radial two-way regional forced flow-increasing rotor |
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