CN204559336U - A kind of hydraulic generator stator floats iron core location take-up device - Google Patents
A kind of hydraulic generator stator floats iron core location take-up device Download PDFInfo
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- CN204559336U CN204559336U CN201520261325.5U CN201520261325U CN204559336U CN 204559336 U CN204559336 U CN 204559336U CN 201520261325 U CN201520261325 U CN 201520261325U CN 204559336 U CN204559336 U CN 204559336U
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Abstract
A kind of hydraulic generator stator floats iron core location take-up device, comprises support ring flat-plate (12); Lower tooth support (13); Upper tooth support (6); Stator lamination (7); Stator pressing plate (5); Core through screw rod (1); Two dove tail muscle supporting plate (9); Two dove tail muscle (10); Core through screw rod (1) runs through stator pressing plate (5), upper tooth support (6), the stator lamination (7) of closed assembly, lower tooth support (13) and support ring flat-plate (12), core through screw rod (1) cover insulation sleeve pipe (8), the two ends of core through screw rod (1) are respectively equipped with locking nut (2); There are butterfly spring (4) and screw rod insulation spacer (3) in core through screw rod (1) upper end also overcoat; The two ends of two dove tail muscle (10) are connected with two dove tail muscle supporting plate (9) and stator lamination (7) respectively.Stator lamination can at axis and radial floating, and the ability of the thermal deformation of this Structure adaptation stator lamination is strong far beyond traditional conventional structure.
Description
Technical field
The utility model relates to hydraulic generator field, and the stator especially relating to hydraulic generator floats the location take-up device of iron core.
Background technology
Large and medium hydro-generator stator core diameter is large, and stator punching is many, and stator caloric value is large, and under the effects such as mechanical oscillation, electromagnetism comprehensive function and variations in temperature, generation loosens by stator core; And there is the temperature difference between stator core and support, the thermal expansion of iron core produces pressure to support, makes iron core generation cobble deformation, affects the normal operation of generator.
Traditional big-and-middle shape hydraulic generator stator core adopts following structure: stator core back adopts single dove tail muscle to locate, between stator core and dove tail muscle, the pad of 0.5-0.7mm is padded during stator core lamination, after lamination press-fits, pad is extracted out, make the iron core clearance for expansion forming 0.5-0.7mm between stator core and positioning bar, stretching screw is positioned at outside stator core, and iron core compresses by the nut by screw rod two ends.The shortcoming of this structure is: stator core radial expansion volume is less, and after iron core axial play, end play cannot compensate, and stretching screw is stressed comparatively large, and when after unit operation a period of time, iron core more easily loosens, and cobble deformation occurs.
CN201181889Y discloses a kind of stator core strain structure of hydraulic turbogenerator, comprise tooth support, lower tooth support, the iron core fanning strip of closed assembly, the tooth pressure bar being arranged on tooth support lower end and lower tooth support upper end and the stretching screw played the role of fastening between upper tooth support and lower tooth support, stretching screw is positioned at iron core segmental-rim portion, stretching screw runs through tooth support, the iron core fanning strip of closed assembly, tooth pressure bar and lower tooth support, the two ends of stretching screw are provided with locking nut, are also provided with folded spring between locking nut and tooth support.The pressure 100% of said structure stretching screw is adopted to act on iron core fanning strip, such guarantee motor operationally, the stability that stator core fanning strip laminates, effectively avoid because iron core fanning strip produces mobile, destroy slot armer and then cause the generation of the accidents such as motor shorted to earth.But this technical scheme still cannot solve the floating problem after stator core radial expansion.
Utility model content
In order to overcome the defect of prior art, the location take-up device that the utility model provides a kind of stator of hydraulic generator to float iron core, pressure is produced to support to solve the existing stator iron core that floats because of thermal expansion, make the technical problem of iron core generation cobble deformation, especially separate determinant float iron core radial expansion after the technical problem that cannot float.
In order to solve the problems of the technologies described above, the utility model provide a kind of hydraulic generator stator float iron core location take-up device, this device comprises the support ring flat-plate be connected with out frame; Be arranged on the lower tooth support on described support ring flat-plate; Upper tooth support; Be stacked in the stator lamination between tooth support and lower tooth support; Be positioned at the stator pressing plate of tooth support away from stator lamination side; And the core through screw rod played the role of fastening; More than the two pieces two dove tail muscle supporting plates be connected with out frame; More than two two dove tail muscle; Described core through screw rod runs through stator pressing plate, upper tooth support, the stator lamination of closed assembly, lower tooth support and support ring flat-plate, core through screw rod cover insulation sleeve pipe, and the two ends of core through screw rod are respectively equipped with the first locking nut and the second locking nut; The outer butterfly spring be enclosed within core through screw rod is also provided with between first locking nut and stator pressing plate; The outer screw rod insulation spacer be enclosed within core through screw rod is also provided with between the first locking nut and butterfly spring; Described stator pressing plate is connected with out frame by stator core adjustment screw; The two ends of described pair of dove tail muscle are connected with the stator lamination of two dove tail muscle supporting plate and closed assembly respectively.
As further improvement opportunity scheme, the hydraulic generator stator that the utility model provides float iron core location take-up device, the shape of cross section at described pair of dove tail muscle two ends is trapezoidal; The notch shape of described pair of dove tail muscle supporting plate matches with the cross section of the first end of two dove tail muscle, and the notch shape at described stator lamination back matches with the cross section of the other end of two dove tail muscle; And there is gap between the bottom of the notch of the first end of two dove tail muscle and two dove tail muscle supporting plate.
In aforementioned improved technical scheme, as optimal technical scheme, the hydraulic generator stator that the utility model provides float iron core location take-up device, the gap between the bottom of the first end of described pair of dove tail muscle and the notch of two dove tail muscle supporting plate is about 1.5mm at normal temperatures.
As further improvement opportunity scheme, the hydraulic generator stator that the utility model provides float iron core location take-up device, stator core two ends have at least two step-like stator laminations respectively, and the stairstepping stator lamination of every one end is respectively by bonding one-tenth entirety.
When not conflicting, above-mentioned improvement or preferred version can be implemented alone or in combination.
The technical scheme that the utility model provides, one end of core through screw rod is provided with butterfly spring, can adapt to the axial float of stator lamination; The two ends of two dove tail muscle are connected with the stator lamination of two dove tail muscle supporting plate and closed assembly respectively, and there is gap at normal temperatures between the bottom of the notch of the first end of two dove tail muscle and two dove tail muscle supporting plate, can adapt to the radial floating of stator lamination.Stator lamination can at axis and radial floating, stator lamination both ends adopt bonding agent to be bonded as one, the rigidity at the both ends of stator lamination is improved, and therefore, the ability of the thermal deformation of this Structure adaptation stator lamination is strong far beyond traditional conventional structure.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 be embodiment stator float iron core location take-up device structural representation;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is II position enlarged drawing in Fig. 1;
Fig. 4 is I position enlarged drawing in Fig. 2.
Embodiment
Hydraulic generator stator as shown in Figures 1 to 4 float iron core location take-up device, support ring flat-plate 12 is connected with out frame, lower tooth support 13 is arranged on support ring flat-plate 12, some stator laminations 7 are stacked between tooth support 6 and lower tooth support 13, stator pressing plate 5 is positioned at tooth support 6 away from stator lamination 7 side, stator pressing plate 5 is connected with out frame by stator core adjustment screw 11, some core through screw rod 1 played the role of fastening run through stator pressing plate 5 successively, upper tooth support 6, the stator lamination 7 of closed assembly, lower tooth support 13 and support ring flat-plate 12, core through screw rod 1 cover insulation sleeve pipe 8, the two ends of core through screw rod 1 are respectively equipped with the first locking nut 2 and the second locking nut, the outer butterfly spring 4 be enclosed within core through screw rod 1 is also provided with between first locking nut 2 and stator pressing plate 5, the outer screw rod insulation spacer 3 be enclosed within core through screw rod 1 is also provided with between the first locking nut 2 and butterfly spring 4, some blocks of two dove tail muscle supporting plates 9 are connected with out frame, the two ends of two dove tail muscle 10 are connected with the stator lamination 7 of two dove tail muscle supporting plate 9 and closed assembly respectively, the shape of cross section at two dove tail muscle 10 two ends is trapezoidal, the notch shape of two dove tail muscle supporting plate 9 matches with the cross section of the first end of two dove tail muscle 10, and between the bottom of the notch of the first end of two dove tail muscle 10 and two dove tail muscle supporting plate 9, there is the gap of about 1.5mm at normal temperatures, the notch shape at stator lamination 7 back matches with the cross section of the other end of two dove tail muscle 10.
Hydraulic generator stator floats when iron core is installed and adopts epoxy resin or modified epoxide resin adhesive by three of stator core upper and lower end step-like stator laminations 7 bonding one-tenth entirety respectively, and the rigidity of the stator lamination at stator core two ends is improved.
One end of core through screw rod 1 is provided with butterfly spring 4, can adapt to the axial float of stator lamination 7; The two ends of two dove tail muscle 10 are connected with the stator lamination 7 of two dove tail muscle supporting plate 9 and closed assembly respectively, and there is gap at normal temperatures between the bottom of the notch of the first end of two dove tail muscle 10 and two dove tail muscle supporting plate 9, can adapt to the radial floating of stator lamination 7.Stator lamination 7 can at axis and radial floating, and stator lamination 7 both ends adopt bonding agent to be bonded as one, and therefore, the ability of the thermal deformation of this Structure adaptation stator lamination 7 is strong far beyond traditional conventional structure.
The utility model is not limited to above preferred implementation, in the spirit that also can limit in the utility model claim and specification, carries out conversion and the improvement of various ways, can solve same technical problem, and obtain the technique effect of expection, therefore not repeat.Those of ordinary skill in the art can from content disclosed in the utility model directly or all schemes associated, as long as within the spirit limited in claim, also belong to protection range of the present utility model.
Claims (4)
1. hydraulic generator stator float iron core location a take-up device, comprise the support ring flat-plate (12) be connected with out frame; Be arranged on the lower tooth support (13) on described support ring flat-plate (12); Upper tooth support (6); Be stacked in the stator lamination (7) between tooth support (6) and lower tooth support (13); Be positioned at the stator pressing plate (5) of tooth support (6) away from stator lamination (7) side; And the core through screw rod played the role of fastening (1), it is characterized in that: also comprise more than two pieces two dove tail muscle supporting plate (9) be connected with out frame; More than two two dove tail muscle (10); Described core through screw rod (1) runs through stator pressing plate (5), upper tooth support (6), the stator lamination (7) of closed assembly, lower tooth support (13) and support ring flat-plate (12), core through screw rod (1) cover insulation sleeve pipe (8), the two ends of core through screw rod (1) are respectively equipped with the first locking nut (2) and the second locking nut; The outer butterfly spring (4) be enclosed within core through screw rod (1) is also provided with between first locking nut (2) and stator pressing plate (5); The outer screw rod insulation spacer (3) be enclosed within core through screw rod (1) is also provided with between the first locking nut (2) and butterfly spring (4); Described stator pressing plate (5) adjusts screw (11) by stator core and is connected with out frame; The two ends of described pair of dove tail muscle (10) are connected with the stator lamination (7) of two dove tail muscle supporting plate (9) and closed assembly respectively.
2. hydraulic generator stator according to claim 1 float iron core location take-up device, it is characterized in that: the shape of cross section at described pair of dove tail muscle (10) two ends is trapezoidal; The notch shape of described pair of dove tail muscle supporting plate (9) matches with the cross section of the first end of two dove tail muscle (10), and there is gap between the bottom of the notch of the first end of two dove tail muscle (10) and two dove tail muscle supporting plate (9); The notch shape at described stator lamination (7) back matches with the cross section of the other end of two dove tail muscle (10).
3. hydraulic generator stator according to claim 2 floats iron core location take-up device, it is characterized in that: the gap between the first end of described pair of dove tail muscle (10) and the bottom of the notch of two dove tail muscle supporting plate (9) is 1.5mm at normal temperatures.
4. hydraulic generator stator according to claim 1 float iron core location take-up device, it is characterized in that: stator core two ends have at least two step-like stator laminations respectively, the stairstepping stator lamination of every one end is respectively by bonding one-tenth entirety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261325.5U CN204559336U (en) | 2015-04-28 | 2015-04-28 | A kind of hydraulic generator stator floats iron core location take-up device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520261325.5U CN204559336U (en) | 2015-04-28 | 2015-04-28 | A kind of hydraulic generator stator floats iron core location take-up device |
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| CN204559336U true CN204559336U (en) | 2015-08-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109088488A (en) * | 2018-10-31 | 2018-12-25 | 德阳市东方恒运电机有限公司 | A kind of stator iron core structure of water turbine generator and its forming method |
| CN115514118A (en) * | 2022-09-29 | 2022-12-23 | 国家电投集团重庆江口水电有限责任公司 | Stator core punching sheet fixing structure, stator and motor |
-
2015
- 2015-04-28 CN CN201520261325.5U patent/CN204559336U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109088488A (en) * | 2018-10-31 | 2018-12-25 | 德阳市东方恒运电机有限公司 | A kind of stator iron core structure of water turbine generator and its forming method |
| CN109088488B (en) * | 2018-10-31 | 2024-04-16 | 德阳市东方恒运电机有限公司 | Stator core structure of hydraulic generator and forming method thereof |
| CN115514118A (en) * | 2022-09-29 | 2022-12-23 | 国家电投集团重庆江口水电有限责任公司 | Stator core punching sheet fixing structure, stator and motor |
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