CN105990944B - 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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- CN105990944B CN105990944B CN201510067075.6A CN201510067075A CN105990944B CN 105990944 B CN105990944 B CN 105990944B CN 201510067075 A CN201510067075 A CN 201510067075A CN 105990944 B CN105990944 B CN 105990944B
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- wind path
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Abstract
The present invention relates to a kind of air-cooled steam turbine generator wind path structures, including out frame wind path, rotor wind path, the cold wind area for being arranged on out frame lower end and hot wind area and brush wind path, wherein, out frame wind path includes the stator ventilation duct positioned at out frame top, the radial ducts group being distributed vertically in out frame internal symmetry as symmetrical centre using out frame center；Rotor wind path includes air gap between axial ducts, rotor, setting respectively in the first tube-axial fan of rotor left and right ends and the second tube-axial fan, wherein, air gap between axial ducts and rotor communicates, and the rotor wind path is communicated with the out frame wind path.The present invention divides the flow into multiply, cold air is made to be in contact as much as possible with all heating parts of generator, the higher stator end of preferential cooled electric generator temperature rise ratio, rotor tip, then cooled electric generator body part, therefore generator each section can be cooled down equably.
Description
Technical field
Present invention relates particularly to a kind of air-cooled steam turbine generator wind path structures.
Background technology
With being continuously increased for more than 30MW QF type steam turbine generator capacity, rotor is more elongated, and heat is not easy to shed, former
By the joint wind path that forms of the empty outer cold type of cooling of the empty outer cold type of cooling of stator and rotor have been unable to meet ventilating and cooling
It needs, rotor temperature rise is exceeded during electromagnetism calculates, this just needs a kind of wind path structure to reduce rotor temperature rise.Original QF types steamer hair
Motor brush and collector ring are directly exposed to be had a defect that in air, and the noise of generator running environment is larger, influences behaviour
Author and ambient enviroment, the brush carbon dust for the generation that rubs drift everywhere, pollute running environment or even influence the safety of generator
Normal operation.
Invention content
The object of the present invention is to provide a kind of air-cooled steam turbine generator wind path structures.
For solution more than technical problem, the technical scheme is that：
A kind of air-cooled steam turbine generator wind path structure including out frame wind path, rotor wind path, is arranged under out frame
The cold wind area and hot wind area at end and brush wind path；Out frame wind path include positioned at out frame top stator ventilation duct,
Using the radial ducts group that out frame center is distributed vertically as symmetrical centre in out frame internal symmetry, the radial ventilation
It is communicated between each radial ducts of road group, the radial ducts group is communicated with stator ventilation duct, the radial ducts
The lower end of group is communicated with hot wind area, and the left and right sides of the stator ventilation duct is communicated with cold wind area；
Rotor wind path includes the air gap and rotor air core coil air duct between axial ducts, rotor, wherein, axial wind
Air gap between road and rotor communicates, and the air gap between rotor air core coil air duct and rotor communicates, the rotor wind path
It is communicated with the out frame wind path；
Preferably, the brush wind path includes air inlet duct, exhausting duct and in the protective cover outside brush carriage
The air duct that portion is formed, the brush wind path are L-type.
Preferably, it is provided with hot wind cooling device in the hot wind area.
Preferably, the radial ducts group includes the first radial ducts being sequentially distributed from left to right, second radially
Ventilating duct, third radial ducts, the 4th radial ducts and the 5th radial ducts.
Preferably, second radial ducts and the 4th radial ducts are communicated with the stator ventilation duct, the second diameter
It is communicated respectively with the first radial ducts and third radial ducts by the through-hole of the left and right sides in the middle part of it to ventilating duct, the
Four radial ducts by the through-hole of the left and right sides in the middle part of it respectively with third radial ducts and the 5th radial ducts phase
It is logical.
Preferably, the lower end of second radial ducts and the 4th radial ducts seals, first radial ventilation
The lower end in road, third radial ducts and the 5th radial ducts is all communicated with hot wind area.
Preferably, be additionally provided at left and right sides of the rotor wind path by cold air squeeze into wind path the first tube-axial fan and
Second tube-axial fan.
Preferably, the air gap phase between the axial ducts pass through the upper and lower ends in the middle part of rotor through-hole and rotor
It is logical.
Preferably, the fan for accelerating the hollow flow of air of brush wind path is provided on brush carriage.
The present invention advantageous effects be：
1st, in the present invention, rotor is encouraging increase fan at the brush carriage of end, and increase brush wind path, can effectively solve
Brush pollutes running environment or even influences asking for the safe normal operation of generator because the carbon dust that friction generates drifts everywhere
Topic.
2nd, air-flow is respectively enterd rotor wind path, out frame wind path and brush wind path by the present invention, and using up cold air can
Energy ground is in contact, therefore generator each section can be cooled down equably with all heating parts of generator.
Description of the drawings
Fig. 1 is the overall structure diagram of steam turbine generator；
Fig. 2 is the right view of steam turbine 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 brushes
Wind path, 8 stator ventilation ducts, 9 first radial ducts, 10 second radial ducts, 11 third radial ducts, 12 the 4th radially
Ventilating duct, 13 the 5th radial ducts, 14 axial ducts.
Specific embodiment
As shown in Figure 3 and Figure 4, a kind of air-cooled steam turbine generator wind path structure, including out frame wind path, rotor wind path,
It is arranged on the cold wind area of out frame lower end and hot wind area and brush wind path 7；Out frame wind path includes being located at out frame 1
The stator ventilation duct 8 on top, the radial direction being distributed vertically in 1 internal symmetry of out frame as symmetrical centre using 1 center of out frame
Ventilating duct group is communicated between each radial ducts of the radial ducts group, and the radial ducts group is divulged information with stator
Pipe 8 communicates, and the lower end of the radial ducts group is communicated with hot wind area, and the left and right sides of the stator ventilation duct 8 is and cold wind
Area communicates；
Rotor wind path includes the air gap and rotor air core coil air duct between axial ducts, rotor, wherein, axial wind
Air gap between road and rotor communicates.
The brush wind path 7 is arranged below brush, and the brush wind path 7 includes air inlet duct, exhausting duct and is mounted on
The air duct formed inside protective cover outside brush carriage, the brush wind path 7 are L-type.
Air-cooling apparatus is provided in the hot wind area.
The radial ducts group includes the first radial ducts 9, the second radial ducts that are sequentially distributed from left to right
10th, third radial ducts 11, the 4th radial ducts 12 and the 5th radial ducts 13.
Second radial ducts, 10 and the 4th radial ducts 12 is communicated with the stator ventilation duct 8, and second radially
Ventilating duct 10 by the through-hole of the left and right sides in the middle part of it respectively with 11 phase of the first radial ducts 9 and third radial ducts
It is logical, the 4th radial ducts 12 by the through-hole of the left and right sides in the middle part of it respectively with third radial ducts 11 and the 5th radially
Ventilating duct 13 communicates.The lower end of second radial ducts 10 and the 4th radial ducts 12 seals, the first radial ducts 9, the
The lower end of three radial ducts 11 and the 5th radial ducts 13 is all communicated with hot wind area.
The left and right ends of rotor wind path are additionally provided with the first tube-axial fan 4 and the second tube-axial fan.Axial ducts pass through
Air gap between the through-hole and rotor of the upper and lower ends at 2 middle part of rotor communicates.As shown in Fig. 2, the air-cooled steam turbine generator
Wind path structure further includes the brush wind path 7 being arranged below brush.It is provided on brush carriage and accelerates air stream in brush wind path 7
Dynamic fan.
Cooling air is squeezed by the first fan 4 and the second fan for being located at 2 left and right ends of rotor, and part cooling is empty
Gas enters 2 overhang region of rotor, rotor winding end is cooled down, subsequently into the air gap between rotor.It is a part of cold
But air is directly entered the air gap between rotor, converges here with the cooling air from rotor end turn coils, then, converges
Close the surface of later cooling air cooling rotor 2.Air duct 14 enters in out frame 1 another part cooling air in an axial direction
Portion after cooling down iron core and winding, into the air gap between rotor, then cools down the middle part of 2 ontology of rotor.Then with preceding two parts
Cooling air converges, and hot wind area, quilt are entered after radial ducts group cooling stator winding and iron core in out frame 1
Air-cooling apparatus cooling in hot wind area.
Cold air is entered by the stator ventilation duct 8 on 1 top of out frame in stator wind path, and then cooling air enters the
Two radial ducts 10 and the 4th radial ducts 12, due to the lower end of the second radial ducts 10 and the 4th radial ducts 12
It is sealing, so cooling air is entered by the second radial ducts 10 and the through-hole of 12 left and right ends of the 4th radial ducts
First radial ducts 9,11 and the 5th radial ducts 13 of third radial ducts, and then stator is cooled down.So
Hot-air enters hot wind area afterwards.
Hot-air is after the aerial cooler cooling in hot wind area, formation cold wind area, and the cooling air in cold wind area returns again
To the first tube-axial fan 4 and the second tube-axial fan, cycle is formed.Stator winding is using the empty outer cold type of cooling, stator line
Circle is solid, and air circulates from coil outer, and cooling air is through stator ventilation duct 8, by flowing through iron core radial ducts group
Cooling air cools down iron core.
Cold wind squeezes into 2 winding overhang wind chamber of rotor by the first tube-axial fan 4 and the second tube-axial fan, in slot air intake vent
Place's cold wind enters rotor air core coil, rotor air core coil is cooled down, then the cooling air in rotor air core coil leads to
The through-hole crossed on rotor air core coil enters the air gap between rotor.
Brush wind path 7 below brush carriage 6 is designed as L-type, is set to generator non-vapour end tail portion.At brush carriage 6
Rotor increases fan, and the air inlet/outlet for brush wind path 7 provides power.6 outside of brush carriage is equipped with protective cover, can reduce operation
When the noise that is contacted with collector ring of brush, and brush carbon dust is isolated in protective cover, passes through brush wind path and discharge workshop, ensure
The cleaning of running environment.
As shown in Figure 1, stator is half arc dome welded-steel plate construction.Light structure is firm, and both sides have castiron
End cap 3.The rotor 2 uses superior alloy steel solid forging structure.The brush carriage 6 and generator are encouraged between the end cap 3 of end
Equipped with pedestal bearing 5, pedestal bearing 5 is aligning-type sliding bearing, and when operation plays a supportive role to rotor.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to invention protection domain
Limitation, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not required to
It is still within the scope of the present invention to make the creative labor the various modifications or changes that can be made.
Claims (6)
1. a kind of air-cooled steam turbine generator wind path structure, it is characterised in that：Including out frame wind path, rotor wind path, it is arranged on
The cold wind area and hot wind area of out frame lower end and brush wind path；The out frame wind path includes being located at out frame top
Stator ventilation duct, the radial ducts that is distributed vertically in out frame internal symmetry as symmetrical centre using out frame center
Group is communicated between the radial ducts of the radial ducts group, and the radial ducts group is communicated with stator ventilation duct, described
The lower end of radial ducts group is communicated with the hot wind area, the left and right sides of the stator ventilation duct with cold wind area phase
It is logical；
The rotor wind path includes the air gap and rotor air core coil air duct between axial ducts, rotor, wherein, the axis
Air gap between air duct and the rotor communicates, and the air gap between rotor air core coil air duct and the rotor communicates,
The rotor wind path is communicated with the out frame wind path；
The brush wind path is arranged below brush, and the brush wind path includes air inlet duct, exhausting duct and mounted on brush branch
The air duct formed inside protective cover outside frame, the brush wind path are L-type；
Hot wind cooling device is provided in the hot wind area；
The first tube-axial fan and that cold air is squeezed into the rotor wind path is additionally provided at left and right sides of the rotor wind path
Two tube-axial fans.
2. air-cooled steam turbine generator wind path structure according to claim 1, it is characterised in that：The radial ducts group packet
Include the first radial ducts being sequentially distributed from left to right, the second radial ducts, third radial ducts, the 4th radial ventilation
Road and the 5th radial ducts.
3. air-cooled steam turbine generator wind path structure according to claim 2, it is characterised in that：Second radial ducts
It is communicated with the 4th radial ducts with the stator ventilation duct, second radial ducts passes through the left and right sides in the middle part of it
Through-hole communicates respectively with first radial ducts and the third radial ducts, and the 4th radial ducts passes through it
The through-hole of the left and right sides at middle part communicates respectively with the third radial ducts and the 5th radial ducts.
4. air-cooled steam turbine generator wind path structure according to claim 3, it is characterised in that：Second radial ducts
It is sealed with the lower end of the 4th radial ducts, first radial ducts, third radial ducts and the 5th radial ducts
Lower end all communicated with the hot wind area.
5. air-cooled steam turbine generator wind path structure according to claim 1, it is characterised in that：The axial ducts are by turning
The through-hole of the upper and lower ends at sub- middle part is communicated with the air gap between the rotor.
6. air-cooled steam turbine generator wind path structure according to claim 1, it is characterised in that：It is provided with and adds on brush carriage
The fan of the speed hollow flow of air of brush wind path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067075.6A CN105990944B (en) | 2015-02-09 | 2015-02-09 | A kind of air-cooled steam turbine generator wind path structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067075.6A CN105990944B (en) | 2015-02-09 | 2015-02-09 | A kind of air-cooled steam turbine generator wind path structure |
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| CN105990944A CN105990944A (en) | 2016-10-05 |
| CN105990944B true CN105990944B (en) | 2018-06-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108566001B (en) * | 2018-06-13 | 2019-06-11 | 哈尔滨理工大学 | What a kind of windy road interweaved is forced into-pull-out type steam turbine generator ventilation cooling system |
| CN110474484A (en) * | 2019-09-24 | 2019-11-19 | 上海电气集团上海电机厂有限公司 | A kind of the cooling device layout and its wind path structure of magneto |
| CN112234742A (en) * | 2020-10-26 | 2021-01-15 | 山东齐鲁电机制造有限公司 | Take RC earthing device's turbo generator brush support and supporting axle head thereof |
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| CN102064636A (en) * | 2011-01-12 | 2011-05-18 | 哈尔滨理工大学 | Steam turbine generator with stator multiloop reciprocating ventilation system |
| CN102611229A (en) * | 2012-03-31 | 2012-07-25 | 永济新时速电机电器有限责任公司 | Air-to-air cooling double-fed asynchronous wind driven generator |
| CN203233280U (en) * | 2013-04-18 | 2013-10-09 | 山东齐鲁电机制造有限公司 | Controllable silicon excitation air-cooled turbo generator |
| CN103545987A (en) * | 2013-10-25 | 2014-01-29 | 中电电机股份有限公司 | Slip ring cooling structure of double-shaft-extension winding motor |
| CN204013084U (en) * | 2014-07-08 | 2014-12-10 | 东方电气集团东方电机有限公司 | A kind of ventilation cooling structure of absolutely empty cooling type wind driven generator |
| CN204361826U (en) * | 2015-02-09 | 2015-05-27 | 山东齐鲁电机制造有限公司 | A kind of air-cooled steam turbine generator wind path structure |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064636A (en) * | 2011-01-12 | 2011-05-18 | 哈尔滨理工大学 | Steam turbine generator with stator multiloop reciprocating ventilation system |
| CN102611229A (en) * | 2012-03-31 | 2012-07-25 | 永济新时速电机电器有限责任公司 | Air-to-air cooling double-fed asynchronous wind driven generator |
| CN203233280U (en) * | 2013-04-18 | 2013-10-09 | 山东齐鲁电机制造有限公司 | Controllable silicon excitation air-cooled turbo generator |
| CN103545987A (en) * | 2013-10-25 | 2014-01-29 | 中电电机股份有限公司 | Slip ring cooling structure of double-shaft-extension winding motor |
| CN204013084U (en) * | 2014-07-08 | 2014-12-10 | 东方电气集团东方电机有限公司 | A kind of ventilation cooling structure of absolutely empty cooling type wind driven generator |
| CN204361826U (en) * | 2015-02-09 | 2015-05-27 | 山东齐鲁电机制造有限公司 | A kind of air-cooled steam turbine generator wind path structure |
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| CN105990944A (en) | 2016-10-05 |
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Effective date of registration: 20210118 Address after: 250012 Qilu motor building, No.18 Huaxin Road, Lixia District, Jinan City, Shandong Province Patentee after: SHANDONG QILU ELECTRIC MOTOR MANUFACTURING Co.,Ltd. Address before: No.18, Huaxin Road, high tech Zone, Jinan, Shandong 250100 Patentee before: SHANDONG QILU ELECTRIC MOTOR MANUFACTURING Co.,Ltd. Patentee before: SHANDONG JINAN POWER EQUIPMENT FACTORY Co.,Ltd. |