CN107896023A - Cold aeration structure outside rotor of steam turbo generator end coil two-way - Google Patents
Cold aeration structure outside rotor of steam turbo generator end coil two-way Download PDFInfo
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- CN107896023A CN107896023A CN201810022571.3A CN201810022571A CN107896023A CN 107896023 A CN107896023 A CN 107896023A CN 201810022571 A CN201810022571 A CN 201810022571A CN 107896023 A CN107896023 A CN 107896023A
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- cushion block
- axis cushion
- longitudinal axis
- rotor
- transverse axis
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses cold aeration structure outside a kind of rotor of steam turbo generator end coil two-way, insulation air duct is provided with rotor end turn coils bottom and separates plate shape into air intake area and wind outlet area with wind, transverse axis cushion block and longitudinal axis cushion block are provided with the rotor end turn coils, transverse axis cushion block ventilation air duct and longitudinal axis cushion block ventilation air duct are provided with the transverse axis cushion block and longitudinal axis cushion block, the rotor end turn coils periphery is provided with retaining ring, the retaining ring connects together with rotating shaft body end, and the rotor end turn coils are divided into laterally and axially independent outer cold cooling structure.Present invention is generally directed to outer cold longer coil, by by rotor end turn coils use it is outside cool down, rotor coil production and processing can be made simple, reduce production cost, while by rotor tip longer path coil（Large size coil）Cooling be divided into two-way cooling, to reduce cooling air duct length, so as to improve cooling effect.
Description
Technical field
The invention belongs to steam turbine generator technical field, outside more particularly to a kind of rotor of steam turbo generator end coil two-way
Cold aeration structure.
Background technology
Steam turbine generator operationally needs to cool down rotor coil, including the cooling of rotor end turn coils,
Existing rotor end turn coils cooling is typically needed using cold form outside interior cold form or single channel side, interior cold this methods for cooling of form
Air channel is processed on rotor end turn coils, production cost is higher；And cold form cooling air duct is longer outside single channel, for longer
Rotor coil（Large size coil）The higher risk of temperature rise be present.
The content of the invention
It is an object of the invention to：For above-mentioned problem, there is provided it is a kind of mainly for outer cold longer coil, lead to
Cross and use two-way ventilating and cooling, to reduce cooling air duct length, so as to improve the rotor of steam turbo generator end line of cooling effect
Enclose cold aeration structure outside two-way.
What the technical scheme of the technology of the present invention was realized in：Cold ventilation knot outside rotor of steam turbo generator end coil two-way
Structure, insulation air duct is provided with rotor end turn coils bottom and separates plate shape into air intake area and wind outlet area with wind, in the rotor-end
Transverse axis cushion block and longitudinal axis cushion block are provided with portion's coil, transverse axis cushion block ventilation wind is provided with the transverse axis cushion block and longitudinal axis cushion block
Road and longitudinal axis cushion block ventilation air duct, retaining ring, the retaining ring and rotating shaft body end are provided with the rotor end turn coils periphery
Connect together, it is characterised in that：The rotor end turn coils are divided into laterally and axially independent outer cold cooling structure；
The axially independent outer cold cooling structure is included in indulging for connect with longitudinal axis cushion block ventilation air duct of being set on longitudinal axis cushion block
Axle pad block air inlet and the longitudinal axis cushion block air outlet set on the retaining ring, the longitudinal axis cushion block air inlet connect with air intake area
Logical, cooling gas enters longitudinal axis cushion block ventilation air duct and to the axial direction part cooling of rotor end turn coils from longitudinal axis cushion block air inlet
Afterwards, then by the longitudinal axis cushion block air outlet wind path is left；
The laterally independent outer cold cooling structure includes the transverse axis connected with transverse axis cushion block ventilation air duct set on transverse axis cushion block
Cushion block air inlet and transverse axis cushion block air outlet, the transverse axis cushion block air inlet connect with air intake area, the transverse axis cushion block air-out
Mouth connects with wind outlet area, and cooling gas enters transverse axis cushion block ventilation air duct and to rotor end turn coils from transverse axis cushion block air inlet
After traversing section cooling, then wind path left by transverse axis cushion block air outlet.
Cold aeration structure outside rotor of steam turbo generator end coil two-way of the present invention, on its described longitudinal axis cushion block
Longitudinal axis cushion block air inlet is positioned close to the position of rotating shaft body, and the longitudinal axis cushion block air outlet is arranged on retaining ring away from rotating shaft sheet
The end position of body, the longitudinal axis cushion block ventilation air duct are connected by the ventilating duct on center ring with longitudinal axis cushion block air outlet, institute
Cooling gas is stated after longitudinal axis cushion block air inlet enters the longitudinal axis cushion block ventilation air duct of axial direction, by the ventilating duct on center ring,
Thrown away again by the longitudinal axis cushion block air outlet on retaining ring and enter air gap.
Cold aeration structure outside rotor of steam turbo generator end coil two-way of the present invention, it sets in the retaining ring end
Baffle plate is equipped with, ventilation groove is provided with the baffle plate, the baffle plate cooperatively forms complete longitudinal axis cushion block air-out with retaining ring
Mouthful.
Cold aeration structure outside rotor of steam turbo generator end coil two-way of the present invention, its described transverse axis cushion block and vertical
Axle pad block is respectively arranged with groove close to the side of corresponding coil, the groove of transverse axis cushion block and the longitudinal axis cushion block side respectively with
Corresponding coil end face outside coordinates, and forms complete transverse axis cushion block ventilation air duct and the longitudinal axis cushion block ventilation air duct.
Cold aeration structure outside rotor of steam turbo generator end coil two-way of the present invention, it is on the rotating shaft body
Rotor slot in be provided with bottom land filler strip, the bottom land filler strip stretch out rotor slot part be arranged on longitudinal axis cushion block air inlet and
It is processed as protruding-type wind scoop structure.
Cold aeration structure outside rotor of steam turbo generator end coil two-way of the present invention, its described transverse axis cushion block air intake
Mouth is positioned close to the angle position of rotor end turn coils.
Cold aeration structure outside rotor of steam turbo generator end coil two-way of the present invention, it is in the center ring with turning
Wind guide vane is provided between the footstalk of shaft body.
Present invention is generally directed to outer cold longer coil, by the way that rotor end turn coils are used into outside cooling, can make to turn
Subcoil production and processing is simple, reduces production cost, while by rotor tip longer path coil（Large size coil）Cooling point
Cooled down for two-way, to reduce cooling air duct length, so as to improve cooling effect.
Brief description of the drawings
Fig. 1 is the structural representation of rotor end turn coils in the present invention.
Fig. 2 is A-A sectional views in Fig. 1.
Fig. 3 is the sectional view of longitudinal axis cushion block air inlet in the present invention.
Fig. 4 is B-B sectional views in Fig. 1.
Marked in figure：1 is insulation air duct, and 2 be that wind separates plate, and 3 be air intake area, and 4 be wind outlet area, and 5 be transverse axis cushion block, and 6 are
Longitudinal axis cushion block, 7 be transverse axis cushion block ventilation air duct, and 8 be longitudinal axis cushion block ventilation air duct, and 9 be retaining ring, and 10 be rotating shaft body, and 11 be vertical
Axle pad block air inlet, 12 be longitudinal axis cushion block air outlet, and ring centered on 13,14 be ventilating duct, and 15 be transverse axis cushion block air inlet, and 16 are
Transverse axis cushion block air outlet, 17 be baffle plate, and 18 be bottom land filler strip, and 20 be wind guide vane, and 21 be rotor end turn coils, and 22 be that chevron supports
Portion.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As Figure 1-4, cold aeration structure outside a kind of rotor of steam turbo generator end coil two-way, in rotor end turn coils
21 bottoms are provided with insulation air duct 1 and wind separates plate 2 and forms air intake area 3 and wind outlet area 4, are set on the rotor end turn coils 21
Transverse axis cushion block 5 and longitudinal axis cushion block 6 are equipped with, the periphery of rotor end turn coils 21 is provided with retaining ring 9, the retaining ring 9 and rotating shaft
The end of body 10 connects together, and the rotor end turn coils 21 divide for laterally and axially independent outer cold cooling structure, described
Transverse axis cushion block 5 and longitudinal axis cushion block 6 are respectively arranged with groove, the transverse axis cushion block 5 and longitudinal axis cushion block 6 close to the side of corresponding coil
The groove of side coordinates with corresponding coil end face outside respectively, forms complete transverse axis cushion block ventilation air duct 7 and longitudinal axis cushion block and leads to
Wind air channel 8.Present invention is generally directed to the coil of longer path（Referred to as：Large size coil）Using cold draft type outside two-way side,
And in order to solve the problems, such as that wind path is long, using coil, axially and transversely part is cold to reduce as single cooling air duct
But wind path length, so as to improve cooling effect.
Wherein, wind guide vane 20 is provided between the center ring 13 and the footstalk of rotating shaft body 10, to improve each wind path
Wind uniformity is taken, the cooling gas enters the bottom of retaining ring 9 to air intake area 3 by wind guide vane 20, and a portion enters longitudinal axis pad
In block ventilation air duct, for cooling down the axial component of rotor end turn coils, another part enters in transverse axis cushion block ventilation air duct, uses
In the lateral part of cooling rotor end turn coils.
Set as shown in Fig. 2 the axially independent outer cold cooling structure is included on the longitudinal axis cushion block 6 of rotating shaft body 10
The longitudinal axis cushion block air inlet 11 connected with longitudinal axis cushion block ventilation air duct 8 put and set in the outer end diameter position of retaining ring 9
Longitudinal axis cushion block air outlet 12, the longitudinal axis cushion block air inlet 11 connects with air intake area 3, and the longitudinal axis cushion block ventilation air duct 8 is logical
The ventilating duct 14 crossed on center ring 13 connects with longitudinal axis cushion block air outlet 12.Into a part of cooling gas in air intake area from the longitudinal axis
After cushion block air inlet 11 enters longitudinal axis cushion block ventilation air duct 8, pass through the wind path pair formed by chevron support 22 on longitudinal axis cushion block
The axial component of end turn is cooled down, then by the ventilating duct 14 on center ring 13, then the longitudinal axis pad by the back of retaining ring 9
Block air outlet 12 is thrown away.The cooling gas for being used to cool down rotor end turn coils axial component in the present invention is finally from retaining ring external diameter position
Air-out is put, thus reaches and shortens coil wind path length, the purpose of cooling effect is improved, in addition, also being improved from the air-out of retaining ring external diameter
The centrifugal head of wind path, lift cooling effect.
Wherein, there is baffle plate 17 in the end set of retaining ring 9, ventilation groove, the gear are provided with the baffle plate 17
Plate 17 cooperatively forms complete longitudinal axis cushion block air outlet 12 with retaining ring 9, compared with the air holes drilled out by drill bit of routine, baffle plate
The processing of upper ventilation groove is more free.According to actual set design conditions, by processing baffle plate, between regulating fender and retaining ring
The size of air outlet, reach the purpose for controlling whole cooling air duct air quantity horizontal, if necessary, the air port on baffle plate can also be processed
Into the structure of centrifugal fan, pressure head is further improved, reaches the purpose for strengthening ventilation.
As shown in figure 3, during due to generator operation, the cooling gas and rotor under retaining ring are relative in a circumferential direction in itself
Motion, in order to optimize the air inlet effect of air inlet, is provided with bottom land filler strip 18, institute in the rotor slot on the rotating shaft body 10
The part for stating the stretching rotor slot of bottom land filler strip 18 is arranged at longitudinal axis cushion block air inlet 11 and is processed as protruding-type wind scoop structure, with
Make end wind path air intake more smoothly, wherein the protruding-type wind scoop structure is by the two neighboring coil of longitudinal axis cushion block air inlet
The bottom land filler strip that lower section is set, which coordinates, to be formed, and the bottom land filler strip end is in inclined-plane, passes through the side channel of longitudinal axis cushion block air inlet one
The low level on heelpiece bar inclined-plane cooperatively forms protruding-type wind scoop structure with the high position on opposite side bottom land filler strip inclined-plane.
As shown in figure 4, the laterally independent outer cold cooling structure is divulged information including being set on transverse axis cushion block 5 with transverse axis cushion block
The transverse axis cushion block air inlet 15 and transverse axis cushion block air outlet 16 that air channel 7 connects, the transverse axis cushion block air inlet 15, which is arranged on, to be turned
Connected near the sub- corner of end coil 21 and with air intake area 3, the transverse axis cushion block air outlet 16 connects with wind outlet area 4.Into entering
Another part cooling gas in wind area is after transverse axis cushion block air inlet 15 enters transverse axis cushion block ventilation air duct 7, by by transverse axis pad
The wind path that chevron support 22 is formed on block cools down to the lateral part of end turn, has cooled down rotor tip large size coil
The gas of lateral part is discharged by transverse axis cushion block air outlet 16, and is thrown away by the big teeth groove of rotor.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. cold aeration structure outside rotor of steam turbo generator end coil two-way, in rotor end turn coils（21）Bottom is provided with insulation
Air duct（1）Plate is separated with wind（2）Form air intake area（3）And wind outlet area（4）, in the rotor end turn coils（21）On be provided with horizontal stroke
Axle pad block（5）With longitudinal axis cushion block（6）, the transverse axis cushion block（5）With longitudinal axis cushion block（6）On be provided with transverse axis cushion block ventilation air duct
（7）With longitudinal axis cushion block ventilation air duct（8）, in the rotor end turn coils（21）Periphery is provided with retaining ring（9）, the retaining ring（9）
With rotating shaft body（10）End connects together, it is characterised in that：The rotor end turn coils（21）It is divided into laterally and axially only
Vertical outer cold cooling structure；
The axially independent outer cold cooling structure is included in longitudinal axis cushion block（6）Upper setting with longitudinal axis cushion block ventilation air duct（8）Even
Logical longitudinal axis cushion block air inlet（11）And in the retaining ring（9）The longitudinal axis cushion block air outlet of upper setting（12）, the longitudinal axis pad
Block air inlet（11）With air intake area（3）Connection, cooling gas is from longitudinal axis cushion block air inlet（11）Into longitudinal axis cushion block ventilation air duct
（8）And to rotor end turn coils（21）Axial direction part cooling after, then by longitudinal axis cushion block air outlet（12）Leave wind path；
The laterally independent outer cold cooling structure includes transverse axis cushion block（5）Upper setting with transverse axis cushion block ventilation air duct（7）Connection
Transverse axis cushion block air inlet（15）And transverse axis cushion block air outlet（16）, the transverse axis cushion block air inlet（15）With air intake area（3）
Connection, the transverse axis cushion block air outlet（16）With wind outlet area（4）Connection, cooling gas is from transverse axis cushion block air inlet（15）Into horizontal stroke
Axle pad block ventilation air duct（7）And to rotor end turn coils（21）Traversing section cooling after, then by transverse axis cushion block air outlet（16）From
Blow in road.
2. cold aeration structure outside rotor of steam turbo generator end coil two-way according to claim 1, it is characterised in that：Institute
State longitudinal axis cushion block（6）On longitudinal axis cushion block air inlet（11）It is positioned close to rotating shaft body（10）Position, the longitudinal axis cushion block
Air outlet（12）It is arranged on retaining ring（9）Away from rotating shaft body（10）End position, the longitudinal axis cushion block ventilation air duct（8）Pass through
Center ring（13）On ventilating duct（14）With longitudinal axis cushion block air outlet（12）Connection, the cooling gas is from longitudinal axis cushion block air inlet
（11）Into the longitudinal axis cushion block ventilation air duct of axial direction（8）Afterwards, by center ring（13）On ventilating duct（14）, then by retaining ring（9）
On longitudinal axis cushion block air outlet（12）Throw away and enter air gap.
3. cold aeration structure outside rotor of steam turbo generator end coil two-way according to claim 2, it is characterised in that：
The retaining ring（9）End set has baffle plate（17）, in the baffle plate（17）On be provided with ventilation groove, the baffle plate（17）With shield
Ring（9）Cooperatively form complete longitudinal axis cushion block air outlet（12）.
4. cold aeration structure outside rotor of steam turbo generator end coil two-way according to claim 1, it is characterised in that：Institute
State transverse axis cushion block（5）With longitudinal axis cushion block（6）Groove, the transverse axis cushion block are respectively arranged with close to the side of corresponding coil（5）With
Longitudinal axis cushion block（6）The groove of side coordinates with corresponding coil end face outside respectively, forms complete transverse axis cushion block ventilation air duct（7）
With longitudinal axis cushion block ventilation air duct（8）.
5. cold aeration structure outside rotor of steam turbo generator end coil two-way according to claim 1, it is characterised in that：
The rotating shaft body（10）On rotor slot in be provided with bottom land filler strip（18）, the bottom land filler strip（18）Stretch out the portion of rotor slot
Divide and be arranged on longitudinal axis cushion block air inlet（11）Place and it is processed as protruding-type wind scoop structure.
6. cold aeration structure outside rotor of steam turbo generator end coil two-way according to claim 1, it is characterised in that：Institute
State transverse axis cushion block air inlet（15）It is positioned close to rotor end turn coils（21）Angle position.
7. cold aeration structure outside rotor of steam turbo generator end coil two-way as claimed in any of claims 1 to 6,
It is characterized in that：In the center ring（13）With rotating shaft body（10）Footstalk between be provided with wind guide vane（20）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810022571.3A CN107896023B (en) | 2018-01-10 | 2018-01-10 | Two-way external cooling ventilation structure for rotor end coil of steam turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810022571.3A CN107896023B (en) | 2018-01-10 | 2018-01-10 | Two-way external cooling ventilation structure for rotor end coil of steam turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107896023A true CN107896023A (en) | 2018-04-10 |
| CN107896023B CN107896023B (en) | 2023-09-05 |
Family
ID=61808976
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810022571.3A Active CN107896023B (en) | 2018-01-10 | 2018-01-10 | Two-way external cooling ventilation structure for rotor end coil of steam turbine generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN107896023B (en) |
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| Publication number | Publication date |
|---|---|
| CN107896023B (en) | 2023-09-05 |
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