CN204361826U - A kind of air-cooled steam turbine generator wind path structure - Google Patents
A kind of air-cooled steam turbine generator wind path structure Download PDFInfo
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- CN204361826U CN204361826U CN201520088727.XU CN201520088727U CN204361826U CN 204361826 U CN204361826 U CN 204361826U CN 201520088727 U CN201520088727 U CN 201520088727U CN 204361826 U CN204361826 U CN 204361826U
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Abstract
The utility model relates to a kind of air-cooled steam turbine generator wind path structure, comprise out frame wind path, rotor wind path, the cold wind district being arranged on out frame lower end and hot blast district and brush wind path, wherein, out frame wind path comprises the stator ventilation duct being positioned at out frame top, the radial ducts group vertically distributed at out frame internal symmetry for symmetrical centre with out frame center; Rotor wind path comprises air gap between axial ducts, rotor, arranges respectively at the first tube-axial fan and second tube-axial fan at two ends, rotor left and right, wherein, air gap between axial ducts with rotor communicates, and described rotor wind path communicates with described out frame wind path.Air-flow is divided into multiply by the utility model, cold air is contacted with all heating parts of generator as much as possible, stator end, rotor tip that preferential cooled electric generator temperature rise ratio is higher, then cooled electric generator body part, therefore generator each several part can be cooled equably.
Description
Technical field
The utility model is specifically related to a kind of air-cooled steam turbine generator wind path structure.
Background technology
Along with the continuous increase of more than 30MW QF type turbo generator capacity, rotor is more elongated, heat not easily sheds, the associating wind path of the outer cold type of cooling of original stator sky and the outer cold type of cooling composition of rotor sky can not meet the needs of ventilating and cooling, electromagnetism calculates rotor temperature rise and exceeds standard, and this just needs a kind of wind path structure to reduce rotor temperature rise.Original QF type turbine generator electromechanical brush and collector ring directly in atmosphere exposed, the defect existed is, the noise of generator operation environment is comparatively large, affect operator and surrounding environment, and fricative brush carbon dust flies away everywhere, pollute running environment, the safety even having influence on generator is normal to be run.
Utility model content
The purpose of this utility model is to provide a kind of air-cooled steam turbine generator wind path structure.
For solving above technical problem, the technical solution of the utility model is:
A kind of air-cooled steam turbine generator wind path structure, comprises out frame wind path, rotor wind path, the cold wind district being arranged on out frame lower end and hot blast district and brush wind path; Out frame wind path comprises the stator ventilation duct being positioned at out frame top, the radial ducts group vertically distributed at out frame internal symmetry for symmetrical centre with out frame center, communicate between each radial ducts of described radial ducts group, described radial ducts group communicates with stator ventilation duct, the lower end of described radial ducts group communicates with hot blast district, and the left and right sides of described stator ventilation duct all communicates with cold wind district;
Rotor wind path comprises air gap between axial ducts, rotor and rotor air core coil air channel, wherein, air gap between axial ducts with rotor communicates, and rotor air core coil air channel communicates with the air gap between rotor, and described rotor wind path communicates with described out frame wind path;
Preferably, the air channel that the protective cover inside that described brush wind path comprises air inlet duct, exhausting duct and is arranged on brush carriage outside is formed, described brush wind path is L-type.
Preferably, hot blast cooling device is provided with in described hot blast district.
Preferably, described radial ducts group comprises the first radial ducts, the second radial ducts, the 3rd radial ducts, the 4th radial ducts and the 5th radial ducts that distribute successively from left to right.
Preferably, described second radial ducts and the 4th radial ducts communicate with described stator ventilation duct, second radial ducts is communicated with the first radial ducts and the 3rd radial ducts respectively by the through hole of the left and right sides in the middle part of it, and the 4th radial ducts is communicated with the 3rd radial ducts and the 5th radial ducts respectively by the through hole of the left and right sides in the middle part of it.
Preferably, the lower end sealing of described second radial ducts and the 4th radial ducts, the lower end of described first radial ducts, the 3rd radial ducts and the 5th radial ducts all communicates with hot blast district.
Preferably, the left and right sides of described rotor wind path is also provided with the first tube-axial fan and the second tube-axial fan of cold air being squeezed into wind path.
Preferably, described axial ducts are communicated with the air gap between rotor by the through hole at the two ends up and down in the middle part of rotor.
Preferably, brush carriage is provided with the fan accelerating brush wind path air flow and move.
Advantageous Effects of the present utility model is:
1, in the utility model, end brush carriage place increase fan encouraged by rotor, and increases brush wind path, effectively can solve brush and fly away everywhere because of fricative carbon dust, pollute running environment, even has influence on the normal problem run of safety of generator.
2, air-flow is entered rotor wind path, out frame wind path and brush wind path by the utility model respectively, and cold air is contacted with all heating parts of generator as much as possible, and therefore generator each several part can be cooled equably.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of turbo generator;
Fig. 2 is the right view of turbo generator;
Fig. 3 is out frame wind path structure schematic diagram;
Fig. 4 is rotor wind path structure schematic diagram.
Wherein, 1 out frame, 2 rotors, 3 end caps, 4 first tube-axial fans, 5 pedestal bearings, 6 brush carriages, 7 brush wind paths, 8 stator ventilation ducts, 9 first radial ducts, 10 second radial ducts, 11 the 3rd radial ducts, 12 the 4th radial ducts, 13 the 5th radial ducts, 14 axial ducts.
Embodiment
As shown in Figure 3 and Figure 4, a kind of air-cooled steam turbine generator wind path structure, comprises out frame wind path, rotor wind path, the cold wind district being arranged on out frame lower end and hot blast district and brush wind path 7; Out frame wind path comprises the stator ventilation duct 8 being positioned at out frame 1 top, the radial ducts group vertically distributed at out frame 1 internal symmetry for symmetrical centre with out frame 1 center, communicate between each radial ducts of described radial ducts group, described radial ducts group communicates with stator ventilation duct 8, the lower end of described radial ducts group communicates with hot blast district, and the left and right sides of described stator ventilation duct 8 all communicates with cold wind district;
Rotor wind path comprises air gap between axial ducts, rotor and rotor air core coil air channel, and wherein, the air gap between axial ducts with rotor communicates.
Described brush wind path 7 is arranged on below brush, the air channel that the protective cover inside that described brush wind path 7 comprises air inlet duct, exhausting duct and is arranged on brush carriage outside is formed, and described brush wind path 7 is L-type.
Air-cooling apparatus is provided with in described hot blast district.
Described radial ducts group comprises the first radial ducts 9, second radial ducts 10, the 3rd radial ducts 11, the 4th radial ducts 12 and the 5th radial ducts 13 that distribute successively from left to right.
Described second radial ducts 10 and the 4th radial ducts 12 communicate with described stator ventilation duct 8, second radial ducts 10 is communicated with the first radial ducts 9 and the 3rd radial ducts 11 respectively by the through hole of the left and right sides in the middle part of it, and the 4th radial ducts 12 is communicated with the 3rd radial ducts 11 and the 5th radial ducts 13 respectively by the through hole of the left and right sides in the middle part of it.The lower end sealing of the second radial ducts 10 and the 4th radial ducts 12, the lower end of the first radial ducts 9, the 3rd radial ducts 11 and the 5th radial ducts 13 all communicates with hot blast district.
The two ends, left and right of rotor wind path are also provided with the first tube-axial fan 4 and the second tube-axial fan.Axial ducts are communicated with the air gap between rotor by the through hole at the two ends up and down in the middle part of rotor 2.As shown in Figure 2, described air-cooled steam turbine generator wind path structure also comprises the brush wind path 7 be arranged on below brush.Brush carriage is provided with and accelerates the dynamic fan of brush wind path 7 air flow.
Cooling-air is squeezed into by the first fan 4 and the second fan being positioned at rotor about 2 two ends, and a part of cooling-air enters rotor 2 overhang region, and then cooled rotor winding overhang enters the air gap between rotor.Part cooling-air directly enters the air gap between rotor, converges herein, then, converge the surface of later cooling-air cooled rotor 2 with the cooling-air from rotor end turn coils.Another part cooling-air vertically air channel 14 enters in the middle part of out frame 1, after cooling unshakable in one's determination and winding, enters the air gap between rotor, then the middle part of cooled rotor 2 body.Then converge with front two parts cooling-air, after the radial ducts group cooling stator winding in out frame 1 and iron core, enter into hot blast district, cooled by the air-cooling apparatus in hot blast district.
Cold air enters in stator wind path by the stator ventilation duct 8 on out frame 1 top, then cooling-air enters the second radial ducts 10 and the 4th radial ducts 12, because the lower end of the second radial ducts 10 and the 4th radial ducts 12 is sealings, so cooling-air enters the first radial ducts 9, the 3rd radial ducts 11 and the 5th radial ducts 13 by the through hole at the second radial ducts 10 and the 4th radial ducts about 12 two ends, and then stator is cooled.Then hot-air enters hot blast district.
Hot-air is after the aerial cooler cooling in hot blast district, and form cold wind district, the cooling-air in cold wind district returns the first tube-axial fan 4 and the second tube-axial fan, forms circulation.Stator winding adopts the empty outer cold type of cooling, and stator coil is solid, and air circulates from coil outer, and cooling-air, through stator ventilation duct 8, cools iron core by the cooling-air flowing through iron core radial ducts group.
Cold wind squeezes into rotor 2 winding overhang wind chamber by the first tube-axial fan 4 and the second tube-axial fan, at groove air intake vent place, cold wind enters rotor air core coil, cool rotor air core coil, the cooling-air then in rotor air core coil enters the air gap between rotor by the through hole on rotor air core coil.
Brush wind path 7 below brush carriage 6 is designed to L-type, is arranged at generator non-vapour end afterbody.Brush carriage 6 place rotor increases fan, for the air inlet/outlet of brush wind path 7 provides power.Brush carriage 6 outside is provided with protective cover, and the noise that when can reduce operation, brush contacts with collector ring, is isolated in brush carbon dust in protective cover again, discharges factory building by brush wind path, ensure that the clean of running environment.
As shown in Figure 1, stator is half arc dome welded-steel plate construction.Light structure is firm, and there is castiron end cap 3 both sides.Described rotor 2 adopts superior alloy steel solid forging structure.Described brush carriage 6 and generator are encouraged to hold between end cap 3 and are provided with pedestal bearing 5, and pedestal bearing 5 is aligning-type sliding bearing, plays a supportive role during operation to rotor.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to utility model protection scope; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still in protection range of the present utility model.
Claims (8)
1. an air-cooled steam turbine generator wind path structure, is characterized in that: comprise out frame wind path, rotor wind path, the cold wind district being arranged on out frame lower end and hot blast district and brush wind path; Described out frame wind path comprises the stator ventilation duct being positioned at out frame top, the radial ducts group vertically distributed at out frame internal symmetry for symmetrical centre with out frame center, communicate between the radial ducts of described radial ducts group, described radial ducts group communicates with stator ventilation duct, the lower end of described radial ducts group communicates with described hot blast district, and the left and right sides of described stator ventilation duct all communicates with described cold wind district;
Described rotor wind path comprises air gap between axial ducts, rotor and rotor air core coil air channel, wherein, air gap between described axial ducts with described rotor communicates, rotor air core coil air channel communicates with the air gap between described rotor, and described rotor wind path communicates with described out frame wind path;
Described brush wind path is arranged on below brush, the air channel that the protective cover inside that described brush wind path comprises air inlet duct, exhausting duct and is arranged on brush carriage outside is formed, and described brush wind path is L-type.
2. air-cooled steam turbine generator wind path structure according to claim 1, is characterized in that: be provided with hot blast cooling device in described hot blast district.
3. air-cooled steam turbine generator wind path structure according to claim 2, is characterized in that: described radial ducts group comprises the first radial ducts, the second radial ducts, the 3rd radial ducts, the 4th radial ducts and the 5th radial ducts that distribute successively from left to right.
4. air-cooled steam turbine generator wind path structure according to claim 3, it is characterized in that: described second radial ducts and the 4th radial ducts communicate with described stator ventilation duct, described second radial ducts is communicated with described first radial ducts and described 3rd radial ducts respectively by the through hole of the left and right sides in the middle part of it, and described 4th radial ducts is communicated with described 3rd radial ducts and described 5th radial ducts respectively by the through hole of the left and right sides in the middle part of it.
5. air-cooled steam turbine generator wind path structure according to claim 4, it is characterized in that: the lower end sealing of described second radial ducts and the 4th radial ducts, the lower end of described first radial ducts, the 3rd radial ducts and the 5th radial ducts all communicates with described hot blast district.
6. air-cooled steam turbine generator wind path structure according to claim 1, is characterized in that: the left and right sides of described rotor wind path is also provided with the first tube-axial fan and the second tube-axial fan of cold air being squeezed into described rotor wind path.
7. air-cooled steam turbine generator wind path structure according to claim 1, is characterized in that: described axial ducts are communicated with the air gap between described rotor by the through hole at the two ends up and down in the middle part of rotor.
8. air-cooled steam turbine generator wind path structure according to claim 1, is characterized in that: brush carriage is provided with and accelerates the dynamic fan of described brush wind path air flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088727.XU CN204361826U (en) | 2015-02-09 | 2015-02-09 | A kind of air-cooled steam turbine generator wind path structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088727.XU CN204361826U (en) | 2015-02-09 | 2015-02-09 | A kind of air-cooled steam turbine generator wind path structure |
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| Publication Number | Publication Date |
|---|---|
| CN204361826U true CN204361826U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520088727.XU Expired - Fee Related CN204361826U (en) | 2015-02-09 | 2015-02-09 | A kind of air-cooled steam turbine generator wind path structure |
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| CN (1) | CN204361826U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990944A (en) * | 2015-02-09 | 2016-10-05 | 山东齐鲁电机制造有限公司 | Wind path structure of air-cooling steam turbine generator |
| CN110635587A (en) * | 2018-09-14 | 2019-12-31 | 北京金风科创风电设备有限公司 | Stator assembly and motor having the same |
-
2015
- 2015-02-09 CN CN201520088727.XU patent/CN204361826U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990944A (en) * | 2015-02-09 | 2016-10-05 | 山东齐鲁电机制造有限公司 | Wind path structure of air-cooling steam turbine generator |
| CN105990944B (en) * | 2015-02-09 | 2018-06-26 | 山东齐鲁电机制造有限公司 | A kind of air-cooled steam turbine generator wind path structure |
| CN110635587A (en) * | 2018-09-14 | 2019-12-31 | 北京金风科创风电设备有限公司 | Stator assembly and motor having the same |
| CN110635587B (en) * | 2018-09-14 | 2020-12-29 | 北京金风科创风电设备有限公司 | Stator assembly and motor having the same |
| US11552511B2 (en) | 2018-09-14 | 2023-01-10 | Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. | Stator assembly, electrical motor, wind power generator set and method for cooling stator assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20210209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |