CN202363998U - Fastening structure for bulb tubular hydro-generator stator core - Google Patents
Fastening structure for bulb tubular hydro-generator stator core Download PDFInfo
- Publication number
- CN202363998U CN202363998U CN 201120512788 CN201120512788U CN202363998U CN 202363998 U CN202363998 U CN 202363998U CN 201120512788 CN201120512788 CN 201120512788 CN 201120512788 U CN201120512788 U CN 201120512788U CN 202363998 U CN202363998 U CN 202363998U
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- China
- Prior art keywords
- stator core
- fastening structure
- cap screw
- bulb
- head cap
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- 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 - Fee Related
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Abstract
The utility model provides a fastening structure for a bulb tubular hydro-generator stator core, and aims to solve the possible problems of large welding deformation, false solder, water penetration and the like due to large welding amount of the fastening structure for the stator core of the bulb tubular hydro-generator set in the prior art. The fastening structure is characterized in that a socket head cap screw is used to laminate and fasten a segmental punching from the inside of an engine base through a dove-tail rib and ensures the segmental punching to be tightly adhered to the inner wall of the engine base; and the head of the socket head cap screw is buried into a dove-tail rib wall and then is subjected to spot welding. The fastening structure for the bulb tubular hydro-generator stator core, provided by the utility model, has the technical effects that on the one hand, the stator core loosening is prevented during operation, and on the other hand, the heat of the stator core is transmitted out from the engine base and is cooled with water in a flow pass.
Description
Technical field
The utility model relates to the fastening structure of hydraulic turbogenerator stator iron core, specially refers to a kind of fastening structure of bulb through-flow type hydraulic turbogenerator stator iron core.
Background technology
The scaled bulb tubular hydraulic generator group is lower than the rotating speed of general vertical hydrogenerator, the rotor number of poles is many, and therefore, general hope has bigger iron core external diameter so that arrange rotor magnetic pole, will make hydraulic generator have height like this and short profile.But,, improve unit efficiency in order to satisfy the waterpower design of hydraulic turbine runner; The stator diameter of scaled bulb tubular hydraulic generator will design smallerly; Stator core will be grown, and the every extremely shared bulk of rotor is little, and too small iron core internal diameter will cause rotor heat radiation difficulty.For making full use of the radial space of scaled bulb tubular hydraulic generator group as much as possible, for the scaled bulb tubular hydraulic generator group of capacity, often adopt the adherent structure of so-called stator core, to increase the radial space of unit less than 20MW.The adherent structure of so-called stator core is exactly that stator core directly is adjacent to the support wall mutually, out frame except that support outer wall and upstream and downstream side the legal orchid, no support inner reinforced plate.Because inboard wall of base has not had the support inner reinforced plate, stator core requires to be close to base internal wall again, and also will repeatedly compress admittedly, has brought difficulty admittedly for repeatedly compressing of stator iron core.
And stator core is one of heart component of generator, and the high silicon sheet iron punching out thick by 0.5mm is overrided to form, and it is fan-shaped that each sheet all is, and portion is provided with ventilation hole at the punching yoke.The wholecircle of stator core is combined into by many segmental punchings, and dashing on every fanning strip has three of dovetail slots, in order to the usefulness of device dove tail muscle.Fanning strip is the segment bonding structure, compresses through tooth support and back-up block.The fastening structure of prior art stator core is for opening the hole on the support wall, it is solid to adopt bolt through dove tail muscle fanning strip repeatedly to be compressed from base outer, uses the shrouding plug welding again.Obviously, the fastening structure of prior art stator core is because welding capacity is big, possibly cause that welding deformation amount is big, problems such as dry joint and infiltration, with influencing unit inner insulation and electric property greatly, influence the safe operation and the shortening unit durability of unit.
Summary of the invention
For the stator core fastening structure that overcomes prior art scaled bulb tubular hydraulic generator group because welding capacity is big; Possibly cause that welding deformation amount is big, problems such as dry joint and infiltration, the utility model proposes a kind of fastening structure of bulb through-flow type hydraulic turbogenerator stator iron core.The fastening structure of the utility model bulb through-flow type hydraulic turbogenerator stator iron core adopts soket head cap screw fanning strip repeatedly to be compressed solid from base inner through dove tail muscle; And make segmental punching be close to inboard wall of base; Its soket head cap screw head is imbedded in the dove tail muscle wall; Then, again the soket head cap screw head is carried out spot welding.
The technique effect of having a mind to of the fastening structure of the utility model bulb through-flow type hydraulic turbogenerator stator iron core is that stator core is loosening in the time of can preventing to move on the one hand; Can make the heat of stator core conduct out on the other hand, cool off by the water in the runner through support.
Description of drawings
Accompanying drawing 1 is the sketch map of stator core segmental lamination;
Accompanying drawing 2 is the sketch map of prior art bulb through-flow type hydraulic turbogenerator stator iron core fastening structure;
Accompanying drawing 3 is the sketch map of the fastening structure of the utility model bulb through-flow type hydraulic turbogenerator stator iron core.
Further specify below in conjunction with accompanying drawing and specific embodiment fastening structure the utility model bulb through-flow type hydraulic turbogenerator stator iron core.
Embodiment
Accompanying drawing 1 is the sketch map of stator core segmental lamination, can know by figure, and be to be overrided to form as the stator core of the heart component of generator by the thick high silicon sheet iron punching out of 0.5mm, it is fan-shaped that each sheet all is, and portion is provided with ventilation hole at the punching yoke.The wholecircle of stator core is combined into by many segmental punchings, and dashing on every fanning strip has three of dovetail slots, in order to the usefulness of device dove tail muscle.Fanning strip is the segment bonding structure, compresses through tooth support and back-up block.
Accompanying drawing 2 is the sketch map of the stator core fastening structure of prior art scaled bulb tubular hydraulic generator group, and among the figure, 1 is the support wall, and 2 is dove tail muscle, and 3 is bolt.Can be known that by figure the fastening structure of prior art stator core is for opening the hole on the support wall, it is solid to adopt bolt 3 through dove tail muscle 2 fanning strip repeatedly to be compressed from base outer, uses the shrouding plug welding again, invades unit inside to avoid current through through hole.Obviously, the fastening structure of prior art stator core is because welding capacity is big, and high to welding requirements, weld badly just possibly cause that welding deformation amount is big, problems such as dry joint and infiltration, insulation and electric property with influencing unit inside greatly influence unit durability.
Accompanying drawing 3 is the sketch map of the fastening structure of the utility model bulb through-flow type hydraulic turbogenerator stator iron core, and among the figure, 1 is the support wall, and 2 is dove tail muscle, and 4 is soket head cap screw.Can know by figure; The fastening structure of the utility model bulb through-flow type hydraulic turbogenerator stator iron core adopts soket head cap screw fanning strip repeatedly to be compressed solid from base inner through dove tail muscle; And make segmental punching be close to inboard wall of base; Its soket head cap screw head is imbedded in the dove tail muscle wall, then, again the soket head cap screw head is carried out spot welding.Obviously, stator core was loosening when the fastening structure of the utility model bulb through-flow type hydraulic turbogenerator stator iron core can prevent to move on the one hand, can make the heat of stator core directly conduct out through support on the other hand, was cooled off by the water in the runner.With improving unit inner insulation and electric property greatly, guarantee the safe operation of unit and prolong unit durability.
Claims (1)
1. the fastening structure of a bulb through-flow type hydraulic turbogenerator stator iron core; It is characterized in that: adopt soket head cap screw fanning strip repeatedly to be compressed solid through dove tail muscle from base inner; And make segmental punching be close to inboard wall of base; Its soket head cap screw head is imbedded in the dove tail muscle wall, then, again the soket head cap screw head is carried out spot welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120512788 CN202363998U (en) | 2011-12-09 | 2011-12-09 | Fastening structure for bulb tubular hydro-generator stator core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120512788 CN202363998U (en) | 2011-12-09 | 2011-12-09 | Fastening structure for bulb tubular hydro-generator stator core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202363998U true CN202363998U (en) | 2012-08-01 |
Family
ID=46575154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120512788 Expired - Fee Related CN202363998U (en) | 2011-12-09 | 2011-12-09 | Fastening structure for bulb tubular hydro-generator stator core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202363998U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051077A (en) * | 2013-01-09 | 2013-04-17 | 国电联合动力技术有限公司 | Permanent magnet generator with stator inclined grooves and inclined groove realization method of permanent magnet generator |
| CN104377848A (en) * | 2014-12-01 | 2015-02-25 | 南阳防爆集团股份有限公司 | Detachable stator core mounting structure |
| CN108608171A (en) * | 2018-04-26 | 2018-10-02 | 青岛理工大学 | A kind of production method with tooth steel clamp plate |
-
2011
- 2011-12-09 CN CN 201120512788 patent/CN202363998U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051077A (en) * | 2013-01-09 | 2013-04-17 | 国电联合动力技术有限公司 | Permanent magnet generator with stator inclined grooves and inclined groove realization method of permanent magnet generator |
| CN103051077B (en) * | 2013-01-09 | 2015-02-04 | 国电联合动力技术有限公司 | Permanent magnet generator with stator inclined grooves and inclined groove realization method of permanent magnet generator |
| CN104377848A (en) * | 2014-12-01 | 2015-02-25 | 南阳防爆集团股份有限公司 | Detachable stator core mounting structure |
| CN108608171A (en) * | 2018-04-26 | 2018-10-02 | 青岛理工大学 | A kind of production method with tooth steel clamp plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20131209 |