CN104009556B - Improve the stator core through screw rod seal that pump-storage generator ventilates - Google Patents
Improve the stator core through screw rod seal that pump-storage generator ventilates Download PDFInfo
- Publication number
- CN104009556B CN104009556B CN201410220703.5A CN201410220703A CN104009556B CN 104009556 B CN104009556 B CN 104009556B CN 201410220703 A CN201410220703 A CN 201410220703A CN 104009556 B CN104009556 B CN 104009556B
- Authority
- CN
- China
- Prior art keywords
- screw rod
- core
- stator
- insulating blanket
- air inlet
- 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.)
- Active
Links
- 238000003475 lamination Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000009423 ventilation Methods 0.000 abstract description 11
- 238000009413 insulation Methods 0.000 abstract description 10
- 125000006850 spacer group Chemical group 0.000 abstract description 5
- 238000003032 molecular docking Methods 0.000 abstract description 4
- 238000013022 venting Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 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
- 238000005056 compaction Methods 0.000 description 1
- 238000001816 cooling 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)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a kind of stator core through screw rod seal improving pump-storage generator ventilation, it is provided with insulating blanket in lamination gap between stator lasmination, core through screw rod runs through and is fixed in stator lasmination, felt pad includes insulated sleeve and insulating blanket, and in insulating blanket, the radially uniform air inlet pipe that is provided with connects with axial air slot; The axle center of core through screw rod is set to cavity and is communicated with lamination gap by air inlet and annular groove. The present invention can support stator lasmination well, can significantly improve insulating properties by the insulated sleeve and insulation spacer sealing docking. Other structures of generator motor are not affected by the structure after improvement, but improve insulating properties and the venting capability of generator unit, improve the global reliability of unit.
Description
Technical field
The present invention relates to pump-storage generator aeration technology field, be specifically related to a kind of stator core through screw rod seal improving pump-storage generator ventilation.
Background technology
The generator motor stator core of pump-storage generator, pipe top edge is exactly in the top edge of ventilation slot, when unit operation, by ventilation slot, stator is cooled down. But due to this structure, long-play can accumulate substantial amounts of impurity between sleeve pipe, lamination and core through screw rod, the time one is long, causes generator motor stator insulation to reduce, is unsatisfactory for requirement, affects the properly functioning of unit. Through the structure of core through screw rod and stator lasmination is analyzed, taking to lengthen the length of core through screw rod sleeve pipe, even if core through screw rod sleeve pipe is under the new structure of the ventilation slot kind of stator lasmination, the circulation of unit operationally air would not cause the accumulation of impurity. Thus solving the defect that the insulation of generator motor core through screw rod reduces.
Part hydroenergy storage station is underground power house formula structure, and generator motor pattern is vertical shaft, suspension type, three-phase, air cooling reversible synchronous motor. Mainly it is made up of following major part: stator, rotor, big axle, upper spider, lower bearing bracket, thrust bearing, top guide bearing, lower guide bearing etc. Generator motor stationary part is made up of support, iron core, winding, and stator core adopts low-loss (during B=4/3T, unit��1W/Kg), high-quality, high permeability, is the high-quality cold-reduced silicon sheet of 0.35mm without timeliness, thickness. Laminating of lamination adopts staggered folding, and staged and layered compresses method, 57 stator core through screw rod fix, and final compaction pressure is 1250N.m.
Summary of the invention
The invention aims to solve the insulation of generator motor core through screw rod and reduce defect that is unreasonable with aeration structure and that exist, it is provided that a kind of stator core through screw rod seal that can improve pump-storage generator ventilation effect.
The solution of the present invention: a kind of stator core through screw rod seal improving pump-storage generator ventilation, it is provided with insulating blanket in lamination gap between stator lasmination, core through screw rod runs through and is fixed in stator lasmination, described insulating blanket is that the insulated sleeve being contained between core through screw rod and stator lasmination by a series of sealing shrouds extends radially outside and formed, and insulating blanket is positioned at lamination gap, radially uniform in insulating blanket it is provided with air inlet pipe; Axially disposed in the medial wall of insulated sleeve have axial air slot, and described air inlet pipe connects with axial air slot; Meanwhile, the axle center of described core through screw rod being set to cavity, the lateral wall of core through screw rod is axially disposed to be had and axially converges air drain. Be additionally provided with annular groove in the outside of core through screw rod, annular groove is provided with, together with meeting at axial remittance air drain, the air inlet connected with cavity in annular groove. It is provided with hard skeleton in described insulated sleeve, in insulating blanket or in air inlet pipe.
Beneficial effects of the present invention: improvement opportunity of the present invention still retains the structure of stator lasmination and core through screw rod, insulated sleeve and insulation spacer can not only support stator lasmination well, can significantly improve insulating properties by the insulated sleeve and insulation spacer sealing docking. And, utilize the insulated sleeve sealing docking and insulation spacer as ventilation channel, it is possible to reach uniformly to bleed effect, and can provide suction pressure, it is to avoid occur the phenomenon of only regional ventilation in existing stator lasmination venting process because of local stoppages. The air drain that axially converges on core through screw rod connects with annular groove, and annular groove necessarily connects with the axial air slot of insulated sleeve medial wall, and no matter how core through screw rod rotates, all without closing current path. Other structures of generator motor are not affected by the structure after improvement, but improve insulating properties and the venting capability of generator unit, improve the global reliability of unit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the top view of a certain section of insulated 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 inlet, and 4 for axially converging air drain, and 5 is annular groove, and 6 is insulated sleeve, and 7 is air inlet pipe, and 8 is axial air slot, and 9 is stator lasmination, and 10 is lamination gap.
Detailed description of the invention
Fig. 1 is a kind of device that can improve pump-storage generator performance of ventilating and insulating properties, stator core is piled up by multiple stator lasminations 9 and is formed, whole piling height is 2930mm, is provided with equally distributed ventilation slot, ventilation slot be by fold into special yoke sheet formed. Core through screw rod 1 runs through and is fixed in stator lasmination 9. The whole tension of stator lasmination 9 completes mainly by core through screw rod 1. Each stator lasmination 9 is fixed by three core through screw rod 1.
Referring to Fig. 1 and Fig. 2, insulating blanket is the insulated sleeve 6 being contained between core through screw rod 1 and stator lasmination 9 by a series of sealing shrouds, and insulated sleeve 6 is made by polytetrafluoroethylmaterial material, acts primarily as the effect of clamping core through screw rod 1 and insulation. Insulated sleeve 6 extends formation insulating blanket radially outside, and insulating blanket is positioned at lamination gap 10. Radially uniform in insulating blanket being provided with air inlet pipe 7, axially disposed in the medial wall of insulated sleeve have axial air slot 8, thus air inlet pipe 7 connects with axial air slot 8, namely lamination gap 10 connects with the axial air slot 8 of insulated sleeve inwall.
Referring to Fig. 3, the axle center of described core through screw rod 1 being set to cavity 2, the lateral wall of core through screw rod 1 is axially disposed axially remittance air drain 4. Meanwhile, being additionally provided with annular groove 5 in the outside of core through screw rod 4, together with annular groove 5 meets at axial remittance air drain 4, air inlet 3 is arranged in annular groove 5. The annular groove 5 arranged due to core through screw rod 1 lateral wall is vertical with the axial air slot of insulated sleeve 6 medial wall, 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 connected with cavity 2 with air inlet 3 by the air drain 4 that axially converges of core through screw rod sidewall. Thus, it is achieved that from the gas channel that scattered lamination gap 10 is collected to cavity 2. It is docking together owing to each insulated sleeve 6 seals, so the good airproof performance of this gas channel, is conducive to improving air pressure, it is achieved air-flow Uniform Flow purpose. Insulating properties significantly improve simultaneously. Support strength for reinforced insulation sleeve pipe 6 and insulation spacer, it is prevented that local collapse, it is possible to be respectively arranged with hard skeleton in insulated sleeve, in insulating blanket or in air inlet pipe.
Claims (2)
1. one kind is improved the stator core through screw rod seal that pump-storage generator ventilates, it is provided with insulating blanket in lamination gap between stator lasmination, core through screw rod runs through and is fixed in stator lasmination, it is characterized in that: described insulating blanket is that the insulated sleeve being contained between core through screw rod and stator lasmination by a series of sealing shrouds extends radially outside and formed, and insulating blanket is positioned at lamination gap, radially uniform in insulating blanket it is provided with air inlet pipe; Each stator lasmination is fixed by three core through screw rod; Axially disposed in the medial wall of insulated sleeve have axial air slot, and described air inlet pipe connects with axial air slot; Meanwhile, the axle center of described core through screw rod being set to cavity, the lateral wall of core through screw rod is axially disposed to be had and axially converges air drain; Be additionally provided with annular groove in the outside of core through screw rod, annular groove is provided with, together with meeting at axial remittance air drain, the air inlet connected with cavity in annular groove.
2. the stator core through screw rod seal that raising pump-storage generator according to claim 1 ventilates, is characterized in that: be provided with hard skeleton in described insulated sleeve, in insulating blanket or in air inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410220703.5A CN104009556B (en) | 2014-05-23 | 2014-05-23 | Improve the stator core through screw rod seal that pump-storage generator ventilates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410220703.5A CN104009556B (en) | 2014-05-23 | 2014-05-23 | Improve the stator core through screw rod seal that pump-storage generator ventilates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104009556A CN104009556A (en) | 2014-08-27 |
| CN104009556B true CN104009556B (en) | 2016-06-08 |
Family
ID=51370098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410220703.5A Active CN104009556B (en) | 2014-05-23 | 2014-05-23 | Improve the stator core through screw rod seal that pump-storage generator ventilates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104009556B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861417B (en) * | 2019-03-05 | 2024-04-02 | 中国电建集团华东勘测设计研究院有限公司 | Hydraulic generator stator core through screw rod structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11266555A (en) * | 1998-03-16 | 1999-09-28 | Toshiba Corp | Rotor for rotary electric machine |
| JP2002010538A (en) * | 2000-06-28 | 2002-01-11 | Mitsubishi Electric Corp | Dynamo-electric machine |
| CN201556981U (en) * | 2009-11-27 | 2010-08-18 | 哈尔滨电机厂有限责任公司 | Compressing and insulating structure for adjusting screw-free stator core of high-capacity vertical hydraulic generator |
| CN201918809U (en) * | 2011-02-12 | 2011-08-03 | 贵阳新光电气有限公司 | Combined spacer sleeve for insulating and sealing stator iron core and tightening screw of power generator |
| CN203850932U (en) * | 2014-05-23 | 2014-09-24 | 国家电网公司 | Stator through-core screw rod insulation device capable of improving ventilation of water pumping energy storage unit |
-
2014
- 2014-05-23 CN CN201410220703.5A patent/CN104009556B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11266555A (en) * | 1998-03-16 | 1999-09-28 | Toshiba Corp | Rotor for rotary electric machine |
| JP2002010538A (en) * | 2000-06-28 | 2002-01-11 | Mitsubishi Electric Corp | Dynamo-electric machine |
| CN201556981U (en) * | 2009-11-27 | 2010-08-18 | 哈尔滨电机厂有限责任公司 | Compressing and insulating structure for adjusting screw-free stator core of high-capacity vertical hydraulic generator |
| CN201918809U (en) * | 2011-02-12 | 2011-08-03 | 贵阳新光电气有限公司 | Combined spacer sleeve for insulating and sealing stator iron core and tightening screw of power generator |
| CN203850932U (en) * | 2014-05-23 | 2014-09-24 | 国家电网公司 | Stator through-core screw rod insulation device capable of improving ventilation of water pumping energy storage unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104009556A (en) | 2014-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102611222B (en) | Motor ventilating system with gear type wind mixing structure | |
| CN204030860U (en) | There is the hydraulic generator of ventilation cooling device | |
| CN104009556B (en) | Improve the stator core through screw rod seal that pump-storage generator ventilates | |
| CN203850932U (en) | Stator through-core screw rod insulation device capable of improving ventilation of water pumping energy storage unit | |
| CN206595818U (en) | A kind of motor with temperature with high efficiency function | |
| CN205178768U (en) | Large -scale brushless excitation motor cooling structure | |
| CN103939617B (en) | A kind of high-performance cavity type axle head air seal structure | |
| CN202798343U (en) | Closed cycle outer rotor fan motor ventilation system | |
| CN204486925U (en) | What be provided with shock insulation type mount pad can the milling machine of indentation | |
| CN203203152U (en) | Installation structure of novel air purifier | |
| CN203608055U (en) | Box-type positive-pressure synchronous motor | |
| CN203387362U (en) | Electric generator with water sleeve cooling mechanism | |
| CN107834774A (en) | A kind of motor of stator with ventilation slot mouth | |
| CN202210736U (en) | Middle and high voltage induction motor | |
| CN104009582A (en) | Large-thrust circulating water pump motor ventilation and cooling structure | |
| CN204306657U (en) | A kind of head of soy bean milk making machine | |
| CN203939358U (en) | A kind of groove-shaped heat insulating strip | |
| CN105180569A (en) | Assembly method for vacuum heat insulation plate | |
| CN204858877U (en) | Hydraulic generator rimq device and have device's hydraulic generator | |
| CN204463982U (en) | Underground heat low-temperature air-cooling reactor | |
| CN201113785Y (en) | Frame aerated auxiliary cooling all=sealed type rectifier | |
| CN201191790Y (en) | Ventilation cooling apparatus for rotor and stator of vertical hydraulic turbogenerator | |
| CN203850971U (en) | Large-thrust circulating water pump motor ventilation cooling structure | |
| CN205351600U (en) | Refrigeration computer lab collection moulding massing arrangement structure | |
| CN204361851U (en) | A kind ofly be connected the thrust generator coordinated with vertical turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |