CN201556981U - Compressing and insulating structure for adjusting screw-free stator core of high-capacity vertical hydraulic generator - Google Patents

Compressing and insulating structure for adjusting screw-free stator core of high-capacity vertical hydraulic generator Download PDF

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Publication number
CN201556981U
CN201556981U CN2009202442148U CN200920244214U CN201556981U CN 201556981 U CN201556981 U CN 201556981U CN 2009202442148 U CN2009202442148 U CN 2009202442148U CN 200920244214 U CN200920244214 U CN 200920244214U CN 201556981 U CN201556981 U CN 201556981U
Authority
CN
China
Prior art keywords
core
stator core
screw rod
insulating
radius
Prior art date
Application number
CN2009202442148U
Other languages
Chinese (zh)
Inventor
陈爽
夏佑安
朴今淑
马文豪
王宇
李雷
Original Assignee
哈尔滨电机厂有限责任公司
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Publication date
Application filed by 哈尔滨电机厂有限责任公司 filed Critical 哈尔滨电机厂有限责任公司
Priority to CN2009202442148U priority Critical patent/CN201556981U/en
Application granted granted Critical
Publication of CN201556981U publication Critical patent/CN201556981U/en

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Abstract

The utility model discloses a compressing and insulating structure for an adjusting screw-free stator core of a high-capacity vertical hydraulic generator. Puncturing bolts and corresponding insulating structures are axially distributed along a generator and arranged at the radius of gravity center of the stator core or positions adjacent to the radius of gravity center, thereby improving the compressing effect of the stator core; the material consumption of the puncturing bolts and tooth supports is saved; nuts of the puncturing bolts are directly and tightly screwed after construction site laminations are finished, and adjusting screws do not need to be used for repeated adjustment, thereby increasing the installation efficiency of a construction site; and the problem of overlarge waveness during the overlap of core laminations as well as the problem of looseness after compression, and the like are effectively avoided, and the problem of insulation between the puncturing bolts and the stator core laminations can be effectively solved.

Description

The big-volume vertical hydraulic generator does not have the screw of adjustment stator core and compresses and insulation system
Technical field: the utility model relates to radially broad of a kind of suitable big-volume vertical hydraulic turbogenerator stator iron core punching, and core through screw rod is arranged in the stator core center of gravity or the nothing during near position of centre of gravity is adjusted the screw stator core and compressed and insulation system.
Background technology: right bank hydroelectric station, Three Gorges, Longtan hydropower station, the stator core stamping sheet radial width of big-volume vertical hydraulic generator units such as La Xiwa hydroelectric station is greater than 450mm, about iron core height 3000mm, if design according to traditional approach, the top board that adopts band to adjust screw compresses mode, through Stress calculation, the diameter of stretching screw needs 42mm at least under the identical situation of material, the thickness of tooth support needs 80mm at least, and this structure to compress effect relatively poor, whole wave degree after stator core stamping sheet laminates requires to be difficult to reach encloses tame standard-required, in unit running process, be easy to generate the loosening phenomenon of stator core, thereby destroy the surface insulation layer of stator core stamping sheet, cause the vibration of iron core, increase eddy current loss, reduce the safe operating life of unit.Therefore be badly in need of improving big-volume vertical hydraulic generator iron core compressing structure.
Summary of the invention: the purpose of this utility model is to disclose a kind of simple in structure, stator core stamping sheet to compress effective, safe and reliable, economical with materials and can not have the screw of adjustment stator core and compress and insulation system by solving the big-volume vertical hydraulic generator that insulate between core through screw rod and the stator core effectively.The technical solution of the utility model is: a kind of big-volume vertical hydraulic generator does not have the screw of adjustment stator core and compresses and insulation system, by tray, two dove tail muscle, last tooth support, stacking spring, pressing plate, insulating washer, steel washer, round nut, core through screw rod, the tooth pressure sheet, insulated tube and insulating sleeve are formed, this structure is along the generator axial distribution, arrange the stator core radius of gravity center or near the radius of gravity center position, tray is welded on each layer ring flat-plate of out frame, the dovetail slot that two dove tail muscle pass on tray and the stator core stamping sheet links together out frame and stator core stamping sheet, core through screw rod is arranged in the radius of gravity center of stator core or near the radius of gravity center position, core through screw rod passes tooth support, the orlop ring flat-plate of stator core stamping sheet and out frame, insulating sleeve equidistantly is enclosed within the core through screw rod interlude scope uniformly, to guarantee the insulation between core through screw rod and the stator core stamping sheet, insulated tube is enclosed within core through screw rod two ends up and down respectively, and be used with insulating washer, the upper end of core through screw rod also is equipped with steel washer except that insulating washer, round nut, stacking spring, wherein stacking spring is enclosed within on the pressing plate, the lower end of core through screw rod also is equipped with insulating washer except that insulating washer, steel washer and round nut, nothing adjustment screw stator core compresses and insulation system is pressed into integral body with stator punching simply and effectively.
The utility model is according to generator unit iron core relative dimensions, requirements such as unit pressure, choose the stator core core through screw rod of right quantity and diameter by Stress calculation, core through screw rod and tray, two dove tail muscle, last tooth support, stacking spring, pressing plate, insulating washer, steel washer, round nut, core through screw rod, tooth pressure sheet insulated tube and insulating sleeve are formed a cover and are compressed and insulation system, avoid effectively stator core laminate the postwave wave spend big and core through screw rod and stator core between problem such as ground connection, thereby stator core is subjected to constant compression force and loosening in the assurance unit running process, with core through screw rod by the good insulation performance structure and earth-free.Nothing of the present utility model adjusts that the screw stator core compresses and insulation system is arranged in the stator core center of gravity with core through screw rod or near near the position of centre of gravity, the exradius of last tooth support is less than the stator core exradius, after the core through screw rod tension, all thrusts all act on stator core stamping sheet by tooth support on the monoblock, compressing mode with the top board of band adjustment screw compares, tooth support is only compressed the normal pressure of core stamping on it, therefore can be thinned to 20mm by original 80mm thick for thickness, and the diameter of core through screw rod also is reduced to 20mm by the original 42mm that is not less than.The utility model core through screw rod and corresponding insulation structural configuration have improved stator core and have compressed effect at the stator core radius of gravity center or near the radius of gravity center position; Saved the material usage of core through screw rod and tooth support; After the building site lamination is finished directly the nut tight core through screw rod get final product, needn't use and adjust screw and adjust repeatedly, improve the building site installation effectiveness; Wave degree when having avoided core stamping to laminate effectively is excessive and compress problems such as afterwards loosening, and can solve the Insulation Problems between core through screw rod and the stator core stamping sheet effectively.
Description of drawings
Fig. 1 does not have the stator core of adjusting screw and compresses and the insulation system profile
Embodiment
A kind of big-volume vertical hydraulic generator does not as shown in Figure 1 have the screw of adjustment stator core and compresses and insulation system, a kind ofly be applicable to that the big-volume vertical hydraulic generator does not have and adjust the screw stator core and compress and insulation system, by tray 1, two dove tail muscle 2, last tooth support 3, stacking spring 4, pressing plate 5, insulating washer 6, steel washer 7, round nut 8, core through screw rod 9, tooth pressure sheet 10, insulated tube 11 and insulating sleeve 12 are formed, this structure is along the generator axial distribution, be arranged in the stator core radius of gravity center or near the radius of gravity center position, tray 1 is welded on each layer ring flat-plate of out frame 13, the dovetail slot 15 that two dove tail muscle 2 pass on tray 1 and the stator core stamping sheet 14 links together out frame 13 and stator core stamping sheet 14, core through screw rod 9 is arranged in the radius of gravity center of stator core or near the radius of gravity center position, core through screw rod 9 passes tooth support 3, the orlop ring flat-plate of stator core stamping sheet 14 and out frame 13, insulating sleeve 12 equidistantly is enclosed within the core through screw rod 9 interlude scopes uniformly, to guarantee the insulation between core through screw rod 9 and the stator core stamping sheet 14, insulated tube 11 is enclosed within core through screw rod respectively, and about in the of 9 two ends, and be used with insulating washer 6, to guarantee core through screw rod 9 and last tooth support 3, insulation between the orlop ring flat-plate of pressing plate 5 and out frame 13, the upper end of core through screw rod 9 also is equipped with steel washer 7 except that insulating washer 6, round nut 8, stacking spring 4, wherein stacking spring 4 is enclosed within on the pressing plate 5, guarantee that iron core is subjected to constant compression force, the lower end of core through screw rod 9 also is equipped with insulating washer 6 except that insulating washer 6, steel washer 7 and round nut 8 do not have to adjust by this cover that screw stator core compresses and insulation system is pressed into integral body with stator punching simply and effectively.

Claims (1)

1. a big-volume vertical hydraulic generator does not have the screw of adjustment stator core and compresses and insulation system, it is characterized in that: by tray (1), two dove tail muscle (2), last tooth support (3), stacking spring (4), pressing plate (5), insulating washer (6), steel washer (7), round nut (8), core through screw rod (9), tooth pressure sheet (10), insulated tube (11) and insulating sleeve (12) are formed, this structure is along the generator axial distribution, be arranged in the stator core radius of gravity center or near the radius of gravity center position, tray (1) is welded on each layer ring flat-plate of out frame (13), the dovetail slot (15) that two dove tail muscle (2) pass on tray (1) and the stator core stamping sheet (14) links together out frame (13) and stator core stamping sheet (14), core through screw rod (9) is arranged in the radius of gravity center of stator core or near the radius of gravity center position, core through screw rod (9) passes tooth support (3), the orlop ring flat-plate of stator core stamping sheet (14) and out frame (13), insulating sleeve (12) equidistantly is enclosed within core through screw rod (9) the interlude scope uniformly, to guarantee the insulation between core through screw rod (9) and the stator core stamping sheet (14), insulated tube (11) is enclosed within core through screw rod (9) two ends up and down respectively, and be used with insulating washer (6), the upper end of core through screw rod (9) also is equipped with steel washer (7) except that insulating washer (6), round nut (8), stacking spring (4), wherein stacking spring (4) is enclosed within on the pressing plate (5), the lower end of core through screw rod (9) also is equipped with insulating washer (6) except that insulating washer (6), steel washer (7) and round nut (8), nothing adjustment screw stator core compresses and insulation system is pressed into integral body with stator punching simply and effectively.
CN2009202442148U 2009-11-27 2009-11-27 Compressing and insulating structure for adjusting screw-free stator core of high-capacity vertical hydraulic generator CN201556981U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202442148U CN201556981U (en) 2009-11-27 2009-11-27 Compressing and insulating structure for adjusting screw-free stator core of high-capacity vertical hydraulic generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202442148U CN201556981U (en) 2009-11-27 2009-11-27 Compressing and insulating structure for adjusting screw-free stator core of high-capacity vertical hydraulic generator

Publications (1)

Publication Number Publication Date
CN201556981U true CN201556981U (en) 2010-08-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202442148U CN201556981U (en) 2009-11-27 2009-11-27 Compressing and insulating structure for adjusting screw-free stator core of high-capacity vertical hydraulic generator

Country Status (1)

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CN (1) CN201556981U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102510182A (en) * 2011-11-19 2012-06-20 中电电机股份有限公司 Auxiliary laminating device for segmental stator iron core
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
CN104779752A (en) * 2015-04-28 2015-07-15 湖南云箭科技有限公司 Stator floating iron core locating and tensioning device and stator floating iron core installing method
CN107276274A (en) * 2016-02-09 2017-10-20 源捷公司 Rotor assembly manufacturing technology and its structure of generation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102510182A (en) * 2011-11-19 2012-06-20 中电电机股份有限公司 Auxiliary laminating device for segmental stator iron core
CN102510182B (en) * 2011-11-19 2014-04-09 中电电机股份有限公司 Auxiliary laminating device for segmental stator iron core
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
CN104779752A (en) * 2015-04-28 2015-07-15 湖南云箭科技有限公司 Stator floating iron core locating and tensioning device and stator floating iron core installing method
CN107276274A (en) * 2016-02-09 2017-10-20 源捷公司 Rotor assembly manufacturing technology and its structure of generation
US10778051B2 (en) 2016-02-09 2020-09-15 Atieva, Inc. Rotor assembly manufacturing technique

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GR01 Patent grant
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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100818

Termination date: 20141127

EXPY Termination of patent right or utility model