CN108173363A - 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
- CN108173363A CN108173363A CN201810073098.1A CN201810073098A CN108173363A CN 108173363 A CN108173363 A CN 108173363A CN 201810073098 A CN201810073098 A CN 201810073098A CN 108173363 A CN108173363 A CN 108173363A
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- China
- Prior art keywords
- core
- screw rod
- generator stator
- hole
- rod hole
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Classifications
-
- 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, it is placed in core through screw rod hole in the core through screw rod and corresponds to the periphery of section and be provided with the insulating layer that is made of flexible material, the correspondence section 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 that setting is made of flexible material in core through screw rod periphery, and insulating layer is made to be contacted with core through screw rod hole hole wall, so as to fulfill 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 plays the role of screw rod insulation.
Description
Technical field
The invention belongs to technical field of generators, more particularly to a kind of generator stator core core through screw rod connection structure and
Its installation method.
Background technology
As shown in Figure 1, the connection structure of existing generator stator core is in a manner that core through screw rod is fixed,
It is general unilateral there are 0.75~1mm gaps between core through screw rod and core through screw rod hole, 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,
Screw rod overhanging portion is caused to lack effective support to iron core, in unit operation, easily causes larger vibration or resonance, unit
It is big to run noise, and without insulation performance.
For above-mentioned technical problem, have a fixed number is put at corresponding air duct during generator core lamination at present
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 there is no insulating, may caused by short circuit between screw rod and iron core electrical hazard, and formed on core length
Fixed supporting point is still less, it is impossible to effectively improve screw rod intrinsic frequency.
Invention content
It is an object of the invention to：In view of the above problems, providing one kind can realize between core through screw rod and iron core
Multi-contact to improve screw rod intrinsic frequency, far from iron coring vibration frequency, avoids resonating and play the power generation of screw rod insulating effect
Machine stator iron core core through screw rod connection structure and its installation method.
The technical proposal of the invention is realized in this way：A kind of generator stator core core through screw rod connection structure, it is 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：It is placed in and wears in the core through screw rod
The periphery that section is corresponded in heart screw hole is provided with the insulating layer being made of flexible material, and insulating layer is provided on the core through screw rod
Correspondence section 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, its axial direction of the core through screw rod upper edge are wrapped
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 either wearing by any number of adjacent core-lamination stacks or all adjacent core-lamination stacks
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 both provided with that the position that notch and notch are set on core-lamination stack is identical, and all positions are identical on the core-lamination stack
Notch collectively form groove elongated in an axial direction.
The generator stator core core through screw rod connection structure that the present invention states, when the adjacent stator core lamination cooperatively forms
Groove for one or more snippets formula structure circumferentially when, adjacent grooves in an axial direction are circumferentially alternately arranged.
A kind of installation method of generator stator core core through screw rod connection structure, it is characterised in that：Using 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
The aperture in core through screw rod hole after core through screw rod passes through core through screw rod hole, is removed packaging components, that is, is canceled to flexible material
Limitation, makes flexible material completely fill out the space between core through screw rod and core through screw rod hole.
The present invention sets the insulation being made of flexible material in core through screw rod periphery based on existing core through screw rod structure
Layer, and insulating layer is made to be contacted with core through screw rod hole hole wall, so as to fulfill Multi-contact between core through screw rod and iron core, 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.
Description of the drawings
Fig. 1 is the attachment structure schematic diagram of existing generator stator core.
Fig. 2 is the structure diagram of the present invention.
Fig. 3 is the structure diagram of core through screw rod in the present invention.
Fig. 4 is A-A sectional views in Fig. 3.
Fig. 5 is the schematic diagram that adjacent stator core lamination cooperatively forms groove in the present invention.
It is marked in figure：1 is generator stator core, and 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
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is 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 core through screw rod hole 4 in the core through screw rod 3 and are corresponded to the outer of section
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, the correspondence section diameter that insulating layer 5 is provided on the core through screw rod 3 are 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
Hole 4 hole wall contact so as to after mounting, form many places supporting point in iron core overall length, substantially increases core through screw rod peace
Intrinsic frequency after dress, in unit operation, the electromagnetic exciting frequency far from iron core avoids causing vibration or resonance, 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
Adjacent core-lamination stack 2 or all adjacent core-lamination stacks 2 set jagged 6 in 4 corresponding position of core through screw rod hole, and adjacent stator core is folded
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 during multi-segment structure, adjacent grooves in an axial direction are circumferentially alternately arranged.In the present embodiment, all core-lamination stacks 2 exist
It is identical that 4 corresponding position of core through screw rod hole is both provided with the position that notch 6 and notch 6 are set on core-lamination stack 2, the core-lamination stack
The identical notch 6 in all positions collectively forms groove elongated in an axial direction 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 support reliability of the core through screw rod to generator stator core, meanwhile, it is capable to adjacent stator core lamination
Between form the support force of side axially outward, and with the tension force-fitting of 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, specially：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 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, makes flexible material by core through screw rod 3 with wearing
Space between heart screw hole completely fills out, so as to fulfill 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 essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of generator stator core core through screw rod connection structure, the generator stator core（1）By several core-lamination stacks
（2）It stacks and is composed, the core through screw rod（3）By generator stator core（1）Core through screw rod hole（4）It passes through and will be several
The core-lamination stack stacked（2）It is fixed together, it is characterised in that：In the core through screw rod（3）It is placed in core through screw rod hole（4）
The periphery of interior correspondence section is provided with the insulating layer being made of flexible material（5）, the core through screw rod（3）On be provided with insulating layer
（5）Correspondence section diameter be not less than core through screw rod hole（4）Aperture, the core through screw rod（3）It is placed in core through screw rod hole（4）It is interior
Afterwards, the core through screw rod（3）Insulating layer（5）Periphery and core through screw rod hole（4）Hole wall contacts.
2. generator stator core core through screw rod connection structure according to claim 1, it is characterised in that：The punching spiral shell
Bar（3）Its axial direction cladding flexible material insulating layer of upper edge（5）Length be not less than core through screw rod hole（4）Length.
3. generator stator core core through screw rod connection structure according to claim 1 or 2, it is characterised in that：It is if described
The dry core-lamination stack stacked（2）In, the adjacent core-lamination stack of any two（2）Or any number of adjacent core-lamination stacks（2）
Or all adjacent core-lamination stacks（2）In core through screw rod hole（4）Corresponding position setting is jagged（6）, adjacent stator core lamination（2）'s
Notch（6）Complement each other to form complete groove, the core through screw rod（3）It is placed in core through screw rod hole（4）After interior, the punching spiral shell
Bar（3）Upper flexible insulating material is filled to respective slot.
4. generator stator core core through screw rod connection structure according to claim 3, it is characterised in that：The adjacent iron
Heart lamination（2）The groove cooperatively formed is one or more snippets or whole ring annular groove structure circumferentially.
5. generator stator core core through screw rod connection structure according to claim 4, it is characterised in that：All iron cores are folded
Piece（2）Notch is both provided in core through screw rod hole corresponding position（6）And notch（6）In core-lamination stack（2）The position of upper setting is identical,
The core-lamination stack（2）The identical notch in upper all positions（6）Collectively form groove elongated in an axial direction.
6. the generator stator core core through screw rod connection structure stated according to claim 4, it is characterised in that：When the adjacent iron
Heart lamination（2）When the groove cooperatively formed is one or more snippets formula structure circumferentially, adjacent grooves in an axial direction are in circumference
On be alternately arranged.
7. a kind of installation of generator stator core core through screw rod connection structure as described in any one in claim 1 to 6
Method, it is characterised in that：Using packaging components to core through screw rod（3）On flexible material wrapped up, using flexible material from
The compressible deformation characteristic of body, in core through screw rod（3）It is inserted into generator stator core（1）Core through screw rod hole（4）Before interior,
Make to be provided with the core through screw rod of flexible insulating material（3）Diameter is not more than core through screw rod hole（4）Aperture, in core through screw rod（3）
Across core through screw rod hole（4）Afterwards, remove packaging components, that is, cancel the limitation to flexible material, make flexible material by punching spiral shell
Bar（3）With core through screw rod hole（4）Between space completely fill 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 true CN108173363A (en) | 2018-06-15 |
| CN108173363B CN108173363B (en) | 2019-01-22 |
Family
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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861417A (en) * | 2019-03-05 | 2019-06-07 | 中国电建集团华东勘测设计研究院有限公司 | A kind of stator iron core of hydraulic generator core through screw rod structure |
| CN114705985A (en) * | 2022-03-31 | 2022-07-05 | 东方电气集团东方电机有限公司 | Stator core compression state monitoring device, method and equipment |
| CN114779073A (en) * | 2022-03-31 | 2022-07-22 | 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 |
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| JPS59226630A (en) * | 1983-06-07 | 1984-12-19 | Mitsubishi Electric Corp | Manufacture of double insulation armature |
| 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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2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS59226630A (en) * | 1983-06-07 | 1984-12-19 | Mitsubishi Electric Corp | Manufacture of double insulation armature |
| 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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861417A (en) * | 2019-03-05 | 2019-06-07 | 中国电建集团华东勘测设计研究院有限公司 | A kind of stator iron core of hydraulic generator core through screw rod structure |
| 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 |
| CN114705985A (en) * | 2022-03-31 | 2022-07-05 | 东方电气集团东方电机有限公司 | Stator core compression state monitoring device, method and equipment |
| CN114779073A (en) * | 2022-03-31 | 2022-07-22 | 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 |
| 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 |
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| CN108173363B (en) | 2019-01-22 |
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