CN201466810U - Inward inclined tooth support structure for generator - Google Patents
Inward inclined tooth support structure for generator Download PDFInfo
- Publication number
- CN201466810U CN201466810U CN2009200775921U CN200920077592U CN201466810U CN 201466810 U CN201466810 U CN 201466810U CN 2009200775921 U CN2009200775921 U CN 2009200775921U CN 200920077592 U CN200920077592 U CN 200920077592U CN 201466810 U CN201466810 U CN 201466810U
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- CN
- China
- Prior art keywords
- core
- tooth support
- support structure
- generator
- positioning screw
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an inward inclined tooth support structure for a generator, which comprises a stator core laminate, and a subblock pressure plate, a magnetic shield and a pressing ring which are closely attached to one another; a positioning screw is arranged at an external diameter position of the subblock pressure plate through a positioning screw gasket and a positioning screw nut; and a center penetrating screw is arranged at an internal diameter position of the subblock pressure plate through a center penetrating screw gasket and a center penetrating screw nut. The inward inclined tooth support structure is characterized in that: an inward inclined tooth support is arranged between the stator core laminate and the subblock pressure plate. The inward inclined tooth support structure has the advantages that: when the core is tightened, the structure can provide pretightening force for a tooth part of the stator core to make the tooth part have enough pressure between plates, so that when the core is loosened, the tooth part of the laminate is prevented from vibrating and causing bending fatigue failure.
Description
Technical field
The utility model relates to a kind of generator introversion formula tooth support structure, is used for axially tightening up of generator stator core, and the axially tight power of core through screw rod and positioning screw is delivered to generator core yoke portion and tooth portion, belongs to turbo generator device technique field.
Background technology
In the high-rating generator field, core pressing is the adequate condition of generator safe operation, and its effect comprises: iron-core lamination becomes as a whole under the constraint of axial, frictional force, can bear circumferential magnetic pull, and prevents that iron-core lamination from moving mutually; Keep flute profile, bear slot wedge when wedging during to the active force of groove and operation and improper operating mode coil to the active force of groove; When the caused shearing action of short circuit moment, punching does not relatively move; Prevent to cause the cupping vibration of tooth portion by various pulsating forces.
The stator core axial force of large turbo-type generator is axially tightened up by tightening up the generation of insulation core through screw rod and positioning screw nut, by tooth support axially tight power is delivered to rear of core and tooth portion.(do not consider engagement contraction unshakable in one's determination) when specified operation, the displacement of core tooth pressing plate mainly contains two parts and forms: diastrophic displacement takes place in tooth support under the axial tightening force effect of core through screw rod and positioning screw; Expanded by heating unshakable in one's determination axially flicks the displacement that produces under the responsive to axial force; The synthetic total bending deformation quantity of tooth support that produces of these two parts.Closed assembly compensation rate unshakable in one's determination is advisable to level up, and should not too much compensate, otherwise too big stack compensation rate can cause tooth support to be out of shape excessive damage.
Because the diastrophic Mathematical Modeling of tooth support is complicated and the test difficulty, be difficult to calculate and test, realize so in closed assembly process unshakable in one's determination, compensate by tooth portion pad, determine that by manufacturing experience this method randomness is big, be unfavorable for guaranteeing compressing of iron core.When the stator core tightness is not enough, the punching electric and magnetic oscillation of whole stator core under the electromagnetic force effect will increase in the generator operation process, may make punching in the fatigue rupture that bends of tooth portion after the long-time running, cause fault, and then influence the normal operation of unit.
Summary of the invention
The purpose of this utility model provides and a kind ofly can effectively improve generator stator core tooth portion tightness, and possesses that processing is simple, compensation precision is high, the stator core introversion formula tooth support structure of good mechanical property.
In order to achieve the above object, the technical solution of the utility model has provided a kind of generator introversion formula tooth support structure, the branch block pressur plate, magnetic screen and the trim ring that comprise stator-core lamination and be close to mutually, positioning screw is located at the outer radius of branch block pressur plate by positioning screw packing ring and positioning screw nut, core through screw rod is located at the inner radius of branch block pressur plate by core through screw rod packing ring and core through screw rod nut, it is characterized in that, between stator-core lamination and trim ring, be provided with the introversion formula tooth support of tooth portion introversion.
Further, the tilt length X of the introversion formula tooth support of described tooth portion introversion is 190～210mm, and inclination width Y is 2～3mm.The tilt length and the width of introversion formula tooth support are determined by Theoretical Calculation and finite element analysis, by verification experimental verification, have guaranteed that the deflection of tooth support and intensity calculating are reasonable, make this architecture advances have certain theoretical property and practicality
The utility model has the advantages that: pretightning force is provided can for when iron core tightens up the stator core tooth part, makes it have enough pole sheet pressures, when avoiding iron core looseness, the fatigue rupture that bends is vibrated by punching tooth portion.
Description of drawings
A kind of introversion formula tooth support structural representation that Fig. 1 provides for the utility model.
Embodiment
Specify the utility model below in conjunction with embodiment.
Embodiment
As shown in Figure 1, for a kind of generator introversion formula tooth support structural representation that the utility model provides, form by stator iron-core lamination 1, trim ring 3, magnetic screen 4, core through screw rod packing ring 5, core through screw rod nut 6, core through screw rod 7, branch block pressur plate 8, positioning screw packing ring 9, positioning screw nut 10, positioning screw 11 and introversion formula tooth support 12.Positioning screw 11 is located at the outer radius of branch block pressur plate 8 by positioning screw packing ring 9 and positioning screw nut 10, core through screw rod 7 is located at the inner radius of branch block pressur plate 8 by core through screw rod packing ring 5 and core through screw rod nut 6, between stator iron-core lamination 1 and trim ring 3, be provided with the introversion formula tooth support 12 of tooth portion introversion, the tilt length X of introversion formula tooth support is 200mm, and inclination width Y is 2.5mm
Core through screw rod 7 is applied to its tightening force on the branch block pressur plate 8 by core through screw rod nut 6 and core through screw rod packing ring 5, positioning screw 11 is applied to its tightening force on the branch block pressur plate 8 by positioning screw nut 10 and positioning screw packing ring 9, divide block pressur plate 8 by magnetic screen 4 with its force transmission to trim ring 3, trim ring 3 is given introversion formula tooth support 12 with force transmission, and the introversion structure of introversion formula tooth support 12 can guarantee the axially tight power of iron-core lamination 1 in tooth portion.
Claims (2)
1. generator introversion formula tooth support structure, the branch block pressur plate (8) that comprises stator iron-core lamination (1) and be close to mutually, magnetic screen (4) and trim ring (3), positioning screw (11) is located at the outer radius of branch block pressur plate (8) by positioning screw packing ring (9) and positioning screw nut (10), core through screw rod (7) is located at the inner radius of branch block pressur plate (8) by core through screw rod packing ring (5) and core through screw rod nut (6), it is characterized in that, between stator iron-core lamination (1) and trim ring (3), be provided with the introversion formula tooth support (12) of tooth portion introversion.
2. a kind of generator introversion formula tooth support structure as claimed in claim 1 is characterized in that, the tilt length X of the introversion formula tooth support (12) of described tooth portion introversion is 190～210mm, and inclination width Y is 2～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200775921U CN201466810U (en) | 2009-06-30 | 2009-06-30 | Inward inclined tooth support structure for generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200775921U CN201466810U (en) | 2009-06-30 | 2009-06-30 | Inward inclined tooth support structure for generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201466810U true CN201466810U (en) | 2010-05-12 |
Family
ID=42394157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200775921U Expired - Fee Related CN201466810U (en) | 2009-06-30 | 2009-06-30 | Inward inclined tooth support structure for generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201466810U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401334A (en) * | 2013-07-31 | 2013-11-20 | 江苏经纬轨道交通设备有限公司 | Rotor pressing ring |
| CN103414264A (en) * | 2013-07-31 | 2013-11-27 | 江苏经纬轨道交通设备有限公司 | Stator pressing ring |
| CN103580306A (en) * | 2013-11-12 | 2014-02-12 | 中电电机股份有限公司 | Tooth pressing sheet with boss |
| CN104600885A (en) * | 2014-12-28 | 2015-05-06 | 中国船舶重工集团公司第七一二研究所 | Integrated ventilating type tooth support |
| CN105743241A (en) * | 2016-03-31 | 2016-07-06 | 中车永济电机有限公司 | Tooth pressing plate for compacting stator and rotor core of large motor |
| CN111953173A (en) * | 2020-08-13 | 2020-11-17 | 中车株洲电力机车研究所有限公司 | Magnetic-levitation train and long stator linear motor and long stator structure thereof |
-
2009
- 2009-06-30 CN CN2009200775921U patent/CN201466810U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401334A (en) * | 2013-07-31 | 2013-11-20 | 江苏经纬轨道交通设备有限公司 | Rotor pressing ring |
| CN103414264A (en) * | 2013-07-31 | 2013-11-27 | 江苏经纬轨道交通设备有限公司 | Stator pressing ring |
| CN103580306A (en) * | 2013-11-12 | 2014-02-12 | 中电电机股份有限公司 | Tooth pressing sheet with boss |
| CN104600885A (en) * | 2014-12-28 | 2015-05-06 | 中国船舶重工集团公司第七一二研究所 | Integrated ventilating type tooth support |
| CN105743241A (en) * | 2016-03-31 | 2016-07-06 | 中车永济电机有限公司 | Tooth pressing plate for compacting stator and rotor core of large motor |
| CN111953173A (en) * | 2020-08-13 | 2020-11-17 | 中车株洲电力机车研究所有限公司 | Magnetic-levitation train and long stator linear motor and long stator structure thereof |
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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: 20100512 Termination date: 20100630 |