CN108173363B - A kind of generator stator core core through screw rod connection structure and its installation method - Google Patents
A kind of generator stator core core through screw rod connection structure and its installation method Download PDFInfo
- Publication number
- CN108173363B CN108173363B CN201810073098.1A CN201810073098A CN108173363B CN 108173363 B CN108173363 B CN 108173363B CN 201810073098 A CN201810073098 A CN 201810073098A CN 108173363 B CN108173363 B CN 108173363B
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- China
- Prior art keywords
- core
- screw rod
- hole
- generator stator
- insulating layer
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention discloses a kind of generator stator core core through screw rod connection structures, the generator stator core is stacked by several core-lamination stacks and is composed, the core through screw rod is passed through by the core through screw rod hole of generator stator core and is fixed several core-lamination stacks stacked together, the insulating layer being made of flexible material is provided in the periphery that the core through screw rod is placed in corresponding segment in core through screw rod hole, the corresponding segment diameter that insulating layer is provided on the core through screw rod is not less than the aperture in core through screw rod hole, after the core through screw rod is placed in core through screw rod hole, the insulating layer periphery of the core through screw rod is contacted with core through screw rod hole hole wall.The present invention is based on existing core through screw rod structure, the insulating layer being made of flexible material is set in core through screw rod periphery, and contact insulating layer with core through screw rod hole hole wall, to realize Multi-contact between core through screw rod and iron core, to improve the intrinsic frequency of screw rod, iron coring vibration frequency is made it away from, avoids resonating, while playing the role of screw rod insulation.
Description
Technical field
The invention belongs to technical field of generators, in particular to a kind of generator stator core core through screw rod connection structure and
Its installation method.
Background technique
As shown in Figure 1, the connection structure of existing generator stator core be in such a way that core through screw rod is fixed,
Between core through screw rod and core through screw rod hole, generally unilateral there are the gaps 0.75~1mm, in order to which screw rod penetrates, but this
Gap makes core through screw rod only have upper and lower ends to fix, and centre is in hanging working condition, and core through screw rod entire length is longer,
It causes screw rod overhanging portion to lack effective support to iron core, in unit operation, easily causes larger vibration or resonance, unit
It is big to run noise, and does not have insulation performance.
In view of the above technical problems, have at present and be put into a fixed number at corresponding air duct during generator core lamination
The insulation sleeve of amount after the completion of lamination, penetrates core through screw rod, realizes that multiple spot is fixed and insulated.But in above-mentioned technical proposal, punching
Screw rod itself, may be because of electrical hazard caused by short circuit between screw rod and iron core there is no insulating, and is formed on core length
Fixed supporting point is still less, cannot effectively improve screw rod intrinsic frequency.
Summary of the invention
It is an object of the invention to: in view of the above problems, providing one kind can be realized between core through screw rod and iron core
Multi-contact, far from iron coring vibration frequency, avoids the power generation for resonating and playing screw rod insulating effect to improve screw rod intrinsic frequency
Machine stator iron core core through screw rod connection structure and its installation method.
The technical scheme of the present invention is realized as follows: a kind of generator stator core core through screw rod connection structure, described
Generator stator core is stacked by several core-lamination stacks and is composed, the core through screw rod by generator stator core punching spiral shell
Rod aperture passes through and is fixed several core-lamination stacks stacked together, it is characterised in that: is placed in and wears in the core through screw rod
The periphery of corresponding segment is provided with the insulating layer being made of flexible material in heart screw hole, is provided with insulating layer on the core through screw rod
Corresponding segment diameter be not less than core through screw rod hole aperture, after the core through screw rod is placed in core through screw rod hole, the punching spiral shell
The insulating layer periphery of bar is contacted with core through screw rod hole hole wall.
Generator stator core core through screw rod connection structure of the present invention is axially wrapped along it on the core through screw rod
The length for covering flexible material insulating layer is not less than the length in core through screw rod hole.
Generator stator core core through screw rod connection structure of the present invention, several core-lamination stacks stacked
In, the adjacent core-lamination stack of any two or any number of adjacent core-lamination stacks or all adjacent core-lamination stacks are being worn
The setting of heart screw hole corresponding position is jagged, and the notch of adjacent stator core lamination complements each other to form complete groove, the punching spiral shell
After bar is placed in core through screw rod hole, flexible insulating material is filled to respective slot on the core through screw rod.
Generator stator core core through screw rod connection structure of the present invention, the adjacent stator core lamination cooperatively form
Groove be one or more snippets or whole ring annular groove structure circumferentially.
Generator stator core core through screw rod connection structure of the present invention, all core-lamination stacks are in core through screw rod hole
Corresponding position is provided with that the position that notch and notch are arranged on core-lamination stack is identical, and all positions are identical on the core-lamination stack
Notch collectively form along axial elongated groove.
The generator stator core core through screw rod connection structure that the present invention states, when the adjacent stator core lamination cooperatively forms
Groove when being one or more snippets formula structure circumferentially, be circumferentially alternately arranged along axial adjacent grooves.
A kind of installation method of generator stator core core through screw rod connection structure, it is characterised in that: use packaging components
Flexible material on core through screw rod is wrapped up, using the compressible deformation characteristic of flexible material itself, is inserted in core through screw rod
Before entering to the core through screw rod hole of generator stator core, it is not more than the core through screw rod diameter for being provided with flexible insulating material
Remove packaging components after core through screw rod passes through core through screw rod hole, that is, cancel to flexible material in the aperture in core through screw rod hole
Limitation, completely fills out flexible material by the space between core through screw rod and core through screw rod hole.
The insulation being made of flexible material is arranged in core through screw rod periphery based on existing core through screw rod structure by the present invention
Layer, and contact insulating layer with core through screw rod hole hole wall, so that Multi-contact between core through screw rod and iron core is realized, to improve screw rod
Intrinsic frequency, make it away from iron coring vibration frequency, avoid resonating, at the same play the role of screw rod insulation.
Detailed description of the invention
Fig. 1 is the attachment structure schematic diagram of existing generator stator core.
Fig. 2 is structural schematic diagram of the invention.
Fig. 3 is the structural schematic diagram of core through screw rod in the present invention.
Fig. 4 is A-A cross-sectional view in Fig. 3.
Fig. 5 is the schematic diagram that adjacent stator core lamination cooperatively forms groove in the present invention.
Marked in the figure: 1 is generator stator core, 2 be core-lamination stack, and 3 be core through screw rod, and 4 be core through screw rod hole, and 5 are
Insulating layer, 6 be notch.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
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 shown in Figure 2-5, a kind of generator stator core core through screw rod connection structure, the generator stator core 1 by
Several core-lamination stacks 2, which stack, to be composed, and the core through screw rod 3 is passed through by the core through screw rod hole 4 of generator stator core 1 and will
Several core-lamination stacks 2 stacked are fixed together, are placed in the outer of corresponding segment in core through screw rod hole 4 in the core through screw rod 3
It is provided with the insulating layer 5 being made of flexible material week, the flexible material uses silicon rubber self-adhesive tape, on the core through screw rod 3
The length that flexible material insulating layer 5 is axially coated along it is not less than the length in core through screw rod hole 4, realizes screw rod all insulation, prevents
Screw rod and iron core short circuit phenomenon are provided with the corresponding segment diameter of insulating layer 5 on the core through screw rod 3 not less than core through screw rod hole 4
Aperture, after the core through screw rod 3 is placed in core through screw rod hole 4,5 periphery of insulating layer of the core through screw rod 3 and core through screw rod
The contact of 4 hole wall of hole substantially increases core through screw rod peace so that after mounting, many places supporting point is capable of forming in iron core overall length
Intrinsic frequency after dress, in unit operation, the electromagnetic exciting frequency far from iron core avoids causing to vibrate or resonating, and reduction is made an uproar
Sound, protection insulation.
Wherein, in several core-lamination stacks 2 stacked, the adjacent core-lamination stack 2 of any two or any number of phases
In 4 corresponding position of core through screw rod hole setting jagged 6, adjacent stator core is folded for adjacent core-lamination stack 2 or all adjacent core-lamination stacks 2
The notch 6 of piece 2 complements each other to form complete groove, and the groove that the adjacent stator core lamination 2 cooperatively forms is circumferentially
One or more snippets or whole ring annular groove structure；When the groove that the adjacent stator core lamination 2 cooperatively forms is one section circumferentially
Or when multi-segment structure, circumferentially it is alternately arranged along axial adjacent grooves.In the present embodiment, all core-lamination stacks 2 exist
It is identical that 4 corresponding position of core through screw rod hole is provided with the position that notch 6 and notch 6 are arranged on core-lamination stack 2, the core-lamination stack
The identical notch 6 in all positions is collectively formed along axial elongated groove on 2, and the core through screw rod 3 is placed in core through screw rod hole 4
Afterwards, flexible insulating material is filled to respective slot on the core through screw rod 3.Utilize the expansion of filling to flexible material in groove
Power can further strengthen core through screw rod to the support reliability of generator stator core, meanwhile, it is capable to adjacent stator core lamination
Between form the support force of side axially outward, and the tension force-fitting with core through screw rod, further strengthen generator unit stator iron
The globality of the heart reduces the vibration occurred in unit running process.
A kind of installation method of generator stator core core through screw rod connection structure, specifically: using packaging components to wearing
Flexible material on heart screw rod 3 is wrapped up, and using the compressible deformation characteristic of flexible material itself, is inserted into core through screw rod 3
Before in the core through screw rod hole of generator stator core 1, it is not more than 3 diameter of the core through screw rod for being provided with flexible insulating material
The aperture in core through screw rod hole, in order to the installation of core through screw rod；After core through screw rod 3 passes through core through screw rod hole, remove parcel
Part cancels the limitation to flexible material, discharge the elasticity capacity of flexible material, make flexible material by core through screw rod 3 with wear
Space between heart screw hole completely fills out, to realize the core through screw rod with flexible insulating material in generator stator core
On installation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (1)
1. a kind of installation method of generator stator core core through screw rod connection structure, the generator stator core (1) if by
Dry core-lamination stack (2), which stacks, to be composed, and the core through screw rod (3) is worn by the core through screw rod hole (4) of generator stator core (1)
It crosses and is fixed several core-lamination stacks (2) stacked together, be placed in core through screw rod hole (4) in the core through screw rod (3)
The periphery of interior corresponding segment is provided with the insulating layer (5) being made of flexible material, is provided with insulating layer on the core through screw rod (3)
(5) corresponding segment diameter is not less than the aperture of core through screw rod hole (4), and the core through screw rod (3) is placed in core through screw rod hole (4)
Afterwards, insulating layer (5) periphery of the core through screw rod (3) is contacted with core through screw rod hole (4) hole wall, it is characterised in that: the installation
Method is to be wrapped up using packaging components the flexible material on core through screw rod (3), utilizes the compressible of flexible material itself
Deformation characteristic makes to be provided with soft before core through screw rod (3) is inserted into the core through screw rod hole (4) of generator stator core (1)
Property insulating materials core through screw rod (3) diameter be not more than core through screw rod hole (4) aperture, core through screw rod (3) pass through punching spiral shell
After rod aperture (4), remove packaging components, that is, cancel the limitation to flexible material, makes flexible material by core through screw rod (3) and punching
Space between screw hole (4) completely fills out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073098.1A CN108173363B (en) | 2018-01-25 | 2018-01-25 | A kind of generator stator core core through screw rod connection structure and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073098.1A CN108173363B (en) | 2018-01-25 | 2018-01-25 | A kind of generator stator core core through screw rod connection structure and its installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108173363A CN108173363A (en) | 2018-06-15 |
| CN108173363B true CN108173363B (en) | 2019-01-22 |
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ID=62515633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810073098.1A Active CN108173363B (en) | 2018-01-25 | 2018-01-25 | A kind of generator stator core core through screw rod connection structure and its installation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108173363B (en) |
Families Citing this family (3)
| 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 |
| CN114705985B (en) * | 2022-03-31 | 2023-10-13 | 东方电气集团东方电机有限公司 | Stator core compression state monitoring device, monitoring method and monitoring equipment |
| CN114779073B (en) * | 2022-03-31 | 2023-10-13 | 东方电气集团东方电机有限公司 | Stator core compression state fault detection device, detection method, generator set monitoring system and computer readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06335210A (en) * | 1993-05-11 | 1994-12-02 | Atlas Copco Tools Ab | Synchronous motor |
| JP2000152527A (en) * | 1998-11-11 | 2000-05-30 | Mitsubishi Electric Corp | Armature of motor |
| RU2258293C1 (en) * | 2003-12-24 | 2005-08-10 | Общество с ограниченной ответственностью "Элсиб-У" (ООО "Элсиб-У") | Electrical machine stator |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59226630A (en) * | 1983-06-07 | 1984-12-19 | Mitsubishi Electric Corp | Manufacture of double insulation armature |
-
2018
- 2018-01-25 CN CN201810073098.1A patent/CN108173363B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06335210A (en) * | 1993-05-11 | 1994-12-02 | Atlas Copco Tools Ab | Synchronous motor |
| JP2000152527A (en) * | 1998-11-11 | 2000-05-30 | Mitsubishi Electric Corp | Armature of motor |
| RU2258293C1 (en) * | 2003-12-24 | 2005-08-10 | Общество с ограниченной ответственностью "Элсиб-У" (ООО "Элсиб-У") | Electrical machine stator |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN108173363A (en) | 2018-06-15 |
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