CN203850932U - Stator through-core screw rod insulation device capable of improving ventilation of water pumping energy storage unit - Google Patents
Stator through-core screw rod insulation device capable of improving ventilation of water pumping energy storage unit Download PDFInfo
- Publication number
- CN203850932U CN203850932U CN201420266481.6U CN201420266481U CN203850932U CN 203850932 U CN203850932 U CN 203850932U CN 201420266481 U CN201420266481 U CN 201420266481U CN 203850932 U CN203850932 U CN 203850932U
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- CN
- China
- Prior art keywords
- screw rod
- stator
- core
- insulating
- storage unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 title abstract description 20
- 238000009423 ventilation Methods 0.000 title abstract description 12
- 238000004146 energy storage Methods 0.000 title abstract 2
- 238000005086 pumping Methods 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 2
- 238000003475 lamination Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 210000001503 joint Anatomy 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model discloses a stator through-core screw rod insulation device capable of improving ventilation of a water pumping energy storage unit. An insulation gasket layer is arranged in lamination gaps between stator laminations; a through-core screw rod is fixed in the stator laminations in a penetrating manner; an insulation gasket comprises an insulating sleeve and the insulating gasket layer; air entering tubes are uniformly distributed in the insulating gasket layer along an axial direction; the air entering tubes are communicated with axial air guide grooves; a hollow cavity is formed at the axis of the through-core screw rod; and the hollow cavity is communicated with annular grooves and the lamination gaps through air entering holes. The stator through-core screw rod insulation device of the utility model can well support the stator laminations. The insulating sleeve is in sealing butt joint with the insulating gasket, so that insulation performance can be significantly improved. With the improved structure adopted, the other structures of a power generation motor are not affected, and the insulation performance and ventilation performance of the stator of the unit can be improved, and the overall reliability of the unit can be improved.
Description
Technical field
The utility model relates to pumped storage unit aeration technology field, is specifically related to a kind of stator core through screw rod seal that pumped storage unit ventilates that improves.
Background technology
Bao Quan company generator motor stator core, pipe top edge is the top edge in ventilation slot just in time, when unit operation, by ventilation slot, to stator, carries out cooling.But due to this structure, long-play can accumulate a large amount of impurity between sleeve pipe, lamination and core through screw rod, the time one is long, causes generator motor stator insulation to reduce, and does not meet the demands, and affects the normal operation of unit.Through the structure of core through screw rod and stator lasmination is analyzed, take to lengthen the length of core through screw rod sleeve pipe, even if core through screw rod sleeve pipe passes under the structure that the ventilation slot kind of stator lasmination is new, unit circulation of air when operation just can not cause the accumulation of impurity.Thereby solved the defect that the insulation of generator motor core through screw rod reduces.
Precious spring hydroenergy storage station is underground power house formula structure, and generator motor pattern is vertical shaft, suspension type, three-phase, air cooling reversible synchronous machine.Mainly by following major part, formed: stator, rotor, macro-axis, upper bracket, lower bearing bracket, thrust bearing, top guide bearing, lower guide bearing etc.Generator motor stationary part is comprised of support, iron core, winding, and stator core adopts low-loss (during B=4/3T, unit≤1W/Kg), high-quality, high permeability, the high-quality cold-reduced silicon sheet that is 0.35mm without timeliness, thickness.Laminating of lamination adopts staggered folding, and staged and layered compresses method, by 57 stator core through screw rod, is fixed, and final compaction pressure is 1250N.m.
Utility model content
The purpose of this utility model is in order to solve the defect that the insulation of generator motor core through screw rod reduces and aeration structure is unreasonable and exist, a kind of stator core through screw rod seal that can improve pumped storage unit ventilation effect to be provided.
Scheme of the present utility model: a kind of stator core through screw rod seal that improves the ventilation of pumped storage unit, in lamination gap between stator lasmination, be provided with insulating blanket, core through screw rod runs through and is fixed in stator lasmination, described insulating blanket is to be contained in the insulating sleeve between core through screw rod and stator lasmination by a series of sealing shrouds, and insulating sleeve outside is radially expanded and formed insulating blanket, and insulating blanket is positioned at pad gap, the radially uniform air inlet pipe that is provided with in insulating blanket; Madial wall at insulating sleeve is provided with axial air slot vertically, and described air inlet pipe is communicated with axial air slot; Meanwhile, the axle center of described core through screw rod is set to cavity, and the lateral wall of core through screw rod is provided with axial remittance air drain vertically, axially in remittance air drain, is being provided with the air admission hole being communicated with cavity.Outside at core through screw rod is also provided with annular groove, and together with annular groove meets at axial remittance air drain, described air admission hole is arranged in annular groove.In described insulating sleeve, in insulating blanket or be respectively arranged with hard skeleton in air inlet pipe.
The beneficial effects of the utility model: the utility model improves the structure that technology still retains stator lasmination and core through screw rod, insulating sleeve and insulation spacer be support stator lamination well, and the insulating sleeve docking by sealing and insulation spacer can significantly improve insulation property.And the insulating sleeve of utilization sealing docking and insulation spacer, as ventilation channel, can reach the effect of evenly bleeding, and suction pressure can be provided, and avoid stopping up and occurring the only phenomenon of regional ventilation because of part in existing stator lasmination venting process.Axial remittance air drain on core through screw rod is communicated with annular groove, and annular groove is inevitable, is communicated with the axial air slot of insulating sleeve madial wall, and no matter how core through screw rod rotates, and can not seal current path.Structure after improvement, on not impact of other structures of generator motor, has still improved insulation property and the venting capability of generator unit, has improved the global reliability of unit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the vertical view of a certain section of insulating sleeve in Fig. 1;
Fig. 3 is the sectional perspective schematic diagram of core through screw rod in Fig. 1.
Number in the figure, 1 is core through screw rod, and 2 is cavity, and 3 is air admission hole, and 4 is the axial air drain that converges, and 5 is annular groove, and 6 is insulating sleeve, and 7 is air inlet pipe, and 8 is axial air slot, and 9 is stator lasmination, and 10 is lamination gap.
Embodiment
Fig. 1 is a kind of device that can improve pumped storage unit performance of ventilating and insulation property, stator core is piled up and is formed by a plurality of stator lasminations 9, whole piling height is 2930mm, is provided with equally distributed ventilation slot, ventilation slot be by fold into special yoke sheet form.Core through screw rod 1 runs through and is fixed in stator lasmination 9.The whole tension of stator lasmination 9 mainly completes by core through screw rod 1.Each stator lasmination 9 is fixing by three core through screw rod 1.
Referring to Fig. 1 and Fig. 2, insulating blanket is to be contained in the insulating sleeve 6 between core through screw rod 1 and stator lasmination 9 by a series of sealing shrouds, and insulating sleeve 6 is made by polytetrafluoroethylmaterial material, mainly works to clamp core through screw rod 1 and insulation.Formation insulating blanket is radially expanded in insulating sleeve 6 outsides, and insulating blanket is positioned at pad gap 10.The radially uniform air inlet pipe 7 that is provided with in insulating blanket, is provided with axial air slot 8 vertically at the madial wall of insulating sleeve, thereby air inlet pipe 7 is communicated with axial air slot 8, and lamination gap 10 is communicated with the axial air slot 8 of insulating sleeve inwall.
Referring to Fig. 3, the axle center of described core through screw rod 1 is set to cavity 2, and the lateral wall of core through screw rod 1 is provided with axial remittance air drain 4 vertically.Meanwhile, in the outside of core through screw rod 4, be also provided with annular groove 5, together with annular groove 5 meets at axial remittance air drain 4, air admission hole 3 is arranged in annular groove 5.The annular groove 5 arranging due to core through screw rod 1 lateral wall is vertical with the axial air slot of insulating sleeve 6 madial walls, so both always meet at together.No matter core through screw rod 1 rotates to any position, and lamination gap 10 communicates all the time with annular groove 5.Annular groove 5 is communicated with cavity 2 by axial remittance air drain 4 and the air admission hole 3 of core through screw rod sidewall.Thereby, realized the gas channel that gather to cavity 2 in the lamination gap 10 from disperseing.Because each insulating sleeve 6 sealings are docking together, so the good airproof performance of this gas channel is conducive to improve air pressure, realize air-flow Uniform Flow object.Insulation property significantly improve simultaneously.Support strength for reinforced insulation sleeve pipe 6 and insulation spacer, prevents local collapse, can be in insulating sleeve, in insulating blanket or be respectively arranged with hard skeleton in air inlet pipe.
Claims (3)
1. one kind is improved the stator core through screw rod seal that pumped storage unit ventilates, in lamination gap between stator lasmination, be provided with insulating blanket, core through screw rod runs through and is fixed in stator lasmination, it is characterized in that: described insulating blanket is to be contained in the insulating sleeve between core through screw rod and stator lasmination by a series of sealing shrouds, and insulating sleeve outside is radially expanded and formed insulating blanket, and insulating blanket is positioned at pad gap, the radially uniform air inlet pipe that is provided with in insulating blanket; Madial wall at insulating sleeve is provided with axial air slot vertically, and described air inlet pipe is communicated with axial air slot; Meanwhile, the axle center of described core through screw rod is set to cavity, and the lateral wall of core through screw rod is provided with axial remittance air drain vertically, axially in remittance air drain, is being provided with the air admission hole being communicated with cavity.
2. the stator core through screw rod seal that raising pumped storage unit according to claim 1 ventilates, it is characterized in that: the outside at core through screw rod is also provided with annular groove, together with annular groove meets at axial remittance air drain, described air admission hole is arranged in annular groove.
3. the stator core through screw rod seal that raising pumped storage unit according to claim 1 ventilates, is characterized in that: in described insulating sleeve, in insulating blanket or be respectively arranged with hard skeleton in air inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266481.6U CN203850932U (en) | 2014-05-23 | 2014-05-23 | Stator through-core screw rod insulation device capable of improving ventilation of water pumping energy storage unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266481.6U CN203850932U (en) | 2014-05-23 | 2014-05-23 | Stator through-core screw rod insulation device capable of improving ventilation of water pumping energy storage unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203850932U true CN203850932U (en) | 2014-09-24 |
Family
ID=51563902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420266481.6U Expired - Lifetime CN203850932U (en) | 2014-05-23 | 2014-05-23 | Stator through-core screw rod insulation device capable of improving ventilation of water pumping energy storage unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203850932U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009556A (en) * | 2014-05-23 | 2014-08-27 | 国家电网公司 | Stator through bolt insulating device for improving ventilation performance of pump storage group |
| CN108173363A (en) * | 2018-01-25 | 2018-06-15 | 东方电气集团东方电机有限公司 | A kind of generator stator core core through screw rod connection structure and its installation method |
-
2014
- 2014-05-23 CN CN201420266481.6U patent/CN203850932U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009556A (en) * | 2014-05-23 | 2014-08-27 | 国家电网公司 | Stator through bolt insulating device for improving ventilation performance of pump storage group |
| CN104009556B (en) * | 2014-05-23 | 2016-06-08 | 国家电网公司 | Improve the stator core through screw rod seal that pump-storage generator ventilates |
| CN108173363A (en) * | 2018-01-25 | 2018-06-15 | 东方电气集团东方电机有限公司 | A kind of generator stator core core through screw rod connection structure and its installation method |
| CN108173363B (en) * | 2018-01-25 | 2019-01-22 | 东方电气集团东方电机有限公司 | A kind of generator stator core core through screw rod connection structure and its installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |