CN109193993A - A kind of combination frustum spring washer form stator end reinforcement structure - Google Patents
A kind of combination frustum spring washer form stator end reinforcement structure Download PDFInfo
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- CN109193993A CN109193993A CN201811073115.8A CN201811073115A CN109193993A CN 109193993 A CN109193993 A CN 109193993A CN 201811073115 A CN201811073115 A CN 201811073115A CN 109193993 A CN109193993 A CN 109193993A
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- stator
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- upper layer
- lower layer
- spring washer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The present invention discloses a kind of combination frustum spring washer form stator end reinforcement structure, it is made of the reinforcement structure (1) of radiation profiles and annular reinforcing structure (2), the present invention can be applied to the reforming processing of non-compliant generator stator end, the reinforcement structure of radiation profiles and the combination of annular reinforcing structure, upper layer stator bar is set closely to be fixed together with lower layer stator bar, and high rigidity of structure caged reinforcement structure is formd in stator end, stator winding end overall stiffness can effectively be promoted, it substantially change end elliptical vibration frequency, avoid intrinsic driving frequency range, guarantee generator operational safety.
Description
Technical field:
The present invention relates to a kind of combination frustum spring washer form stator end reinforcement structures.
Background technique:
Full speed steam turbine generator is compact-sized, and mechanical oscillation and ventilating and cooling outstanding problem directly influence generator
Operational safety, such as stator end mode and the intrinsic frequency problem of lead, for the generator of 50Hz network system, stator is being transported
It will be by ellipse 100Hz electromagnetic force, if stator end ellipse Modal frequency is equal to or connects during row
Nearly 100Hz, and when vibratory response is bigger, stator end is possible to resonate, lead to entire winding overhang worn loose,
Bar mechanical fatigue, the safe operation for causing major accident hidden danger, endangering unit.Therefore, generator design should make stator as far as possible
End entirety ellipse intrinsic frequency avoids 100Hz proper range, but current vibration analysis means can not still accurately calculate and determine
Sub- end portion vibration characteristic；And stator end assembling structure is complicated, end is conformal and Binding material is also by construction environment temperature etc.
Factor influences, and influences end intrinsic frequency by biggish uncertain factor, and stator end intrinsic frequency after completion is caused to be deposited
In biggish discreteness, so often there is the stator end vibration shape and national standard are not achieved in new design and the product of duplication of production
And Utilities Electric Co.'s relevant criterion requirement, be unable to satisfy the phenomenon that contract requirement；Once there is this problem, it is generally difficult to locate
Reason, is limited by structure and operation environment, and generator stator end binding structure cannot generally use metal structure, can not be influenced
Ventilating and cooling, it is very harsh to the restrictive condition of binding structure design, once product manufacturing finishes, Iterim Change binding structure
Application space is subject to many limitations and is difficult to carry out, and traditional remedial measure is little on the change of stator end vibration shape influence, and one
As can only change the intrinsic frequency of 1-2Hz, when causing end elliptical vibration frequency that cannot avoid the situation within the scope of 95-115Hz
There is generation；Its reason is that postorder binding can only be attached to upper layer stator bar and lower layer's stator bar surface, cannot be formed
Power is tightened, upper and lower layer stator bar cannot be made closely to be fixed together, overall stiffness cannot be made obviously to be reinforced, thus
End elliptical vibration frequency cannot be made to be substantially change；
To solve this problem, domestic and international generator manufactory is successively proposed improved structural measure, such as originating from Europe
" radial rigidity can tensioner again support construction ", be made of support ring, inclined wedge and insulation blanket stud and nut, interior pushing out ring etc., can
To realize the variation of fastening force by adjusting insulation blanket stud and nut, achieve the purpose that change stator end elliptical vibration frequency,
But should structure is complicated, cost is high, it is stringent to require mounting and adjusting, there is also adjustment parts more, insulation blanket stud and nut check are tired
It is difficult, be easy to induce the hidden danger for loosening abrasion, using being restricted；And this scheme can be only applied to newly design, it is necessary to thoroughly
Change design structure, remedying for existing design structure can not be applied to；
Also it takes and whole glass filament bundle reinforcing ring is set at insulation booth outer diameter, make at generator stator end insulation booth
Whole coil structures globality is reinforced, the method for promoting generator end entirety intrinsic frequency, and patent applied for, tests through practice
Card, after according to said method constructing, stator winding end entirety intrinsic frequency has the case for promoting about 8Hz, and effect is significantly better than previous
Method has successfully remedied part substandard product；But the product excessive for frequency departure, this method are still unable to satisfy frequency
Change demand, after construction stator winding end entirety intrinsic frequency still fall within it is unqualified within the scope of, reason be become nose
Rigidity is limited for the stiffness change effect at involute position；
If implementing to bind at stator end involute position, keep upper layer stator bar and lower layer stator bar close
Be fixed together, achieve the effect that the overall stiffness for increasing substantially the stator end to have completed, significantly change to reach
Become the purpose of stator winding end entirety intrinsic frequency；But problem is that the binding that postorder remedial measure is implemented can not shape
At the enough power of tightening, it is difficult to achieve the effect that make upper layer stator bar to be closely fixed together with lower layer stator bar, no
Overall stiffness can be made obviously to be reinforced, end elliptical vibration frequency can not be made to be substantially change.
Summary of the invention: the present invention discloses a kind of combination frustum spring washer form stator end reinforcement structure, has and previous skill
The different structure type of art, is made of the reinforcement structure of radiation profiles and annular reinforcing structure, the reinforcement structure benefit of radiation profiles
With the elastic acting force of the nonmetallic spring washer savings of taper type, the binding structure formation for implementing postorder remedial measure is tightened
Power makes upper layer stator bar be closely fixed together with lower layer's stator bar, obtains itself overall stiffness of involute position
Reinforce to obvious, annular reinforcing structure utilizes the elastic acting force of planar spring savings, implements postorder remedial measure
Power is tightened in binding structure formation, is fixed on reinforcing ring, upper layer stator bar, lower layer's stator bar, stator retaining ring closely
Together, the cyclic structure that the moment of inertia is several times as much as original structure is formed, reinforces itself overall stiffness of involute position obviously；Spoke
The reinforcement structure of distribution and the combination of annular reinforcing structure are penetrated, forms high rigidity of structure caged reinforcement structure in stator end,
Stator winding end overall stiffness can be effectively promoted, end elliptical vibration frequency is substantially change, avoids inherently motivating
Frequency range guarantees generator operational safety.The technical solution of the present invention is as follows: a kind of combination frustum spring washer form stator end adds
Strong structure, it is characterized in that: the structure is made of the reinforcement structure of radiation profiles and annular reinforcing structure, the reinforcement knot of radiation profiles
Structure is by lower laminated plank, the conformal pad of lower layer, the conformal pad in upper layer, upper laminated plank, the nonmetallic spring washer of taper type, cover board, bandage, screw structure
At the structure is mounted on turbogenerator stator winding end portion involute position, along the generatrix direction of stator end frustum structure
It is radially distributed, the conformal pad of lower layer, upper laminated plank and upper layer stator bar is padded between lower laminated plank and lower layer's stator bar
Between pad the conformal pad in upper layer, there is chamber in the upper surface of upper laminated plank, to accommodate the nonmetallic spring washer of taper type, the following table of cover board
Face is contacted with the nonmetallic spring washer of taper type, and screw puts together on upper laminated plank, the nonmetallic spring washer of taper type, cover board together, bandage
The through hole formed across lower layer's stator bar and upper layer stator bar constitutes closed-loop, to lower laminated plank, the conformal pad of lower layer, under
Layer stator bar, the conformal pad of interlayer, upper layer stator bar, the conformal pad in upper layer, upper laminated plank, the nonmetallic spring washer of taper type, cover board
The structure of composition forms binding constraint, and the nonmetallic spring washer of taper type is in confined state；Annular reinforcing structure is by reinforcing ring, flat
Flat spring, sectorial block, conformal pad, tied rope are constituted, which is mounted on turbogenerator stator winding end portion involute position, adds
Strong ring has annular groove, built-in planar spring and sectorial block, and tied rope passes through the perforation that lower layer's stator bar and upper layer stator bar are formed
Hole constitutes closed-loop, to stator retaining ring, lower layer's stator bar, the conformal pad of interlayer, upper layer stator bar, conformal pad, sectorial block, puts down
The structure formation binding constraint of flat spring, reinforcing ring composition, planar spring are in and are oppressed Bending Deformation state, and planar spring is set
Between sectorial block and the annular groove inner surface of reinforcing ring, conformal pad is placed between sectorial block and upper layer stator bar.
Technical effect: for the reinforcement structure of radiation profiles, since bandage passes through lower layer's stator bar and upper layer stator line
The through hole that stick is formed forms closed-loop, can be to the conformal pad of the lower laminated plank, lower layer that successively laminate, lower layer's stator bar, layer
Between conformal pad, upper layer stator bar, the conformal pad in upper layer, upper laminated plank, the nonmetallic spring washer of taper type, cover board formed constraint fix,
Bandage forms binding closed-loop using the through hole that lower layer's stator bar and upper layer stator bar are formed, so that construction can be fixed
Subsequent job is carried out after sub- winding assembly, bandage is wound using the glass filament bundle of epoxy resin-impregnated, convenient for across perforation
Hole under the constraint fixed function of its screen resilience and bandage, makes successively since the nonmetallic spring washer of taper type is in confined state
The lower laminated plank that laminates, the conformal pad of lower layer, lower layer's stator bar, the conformal pad of interlayer, upper layer stator bar, the conformal pad in upper layer, on
The nonmetallic spring washer of laminated plank, taper type, cover board form interaction force, generate lower layer's stator bar and upper layer stator bar is firm
Solid binding effect together so that taper type end construction based on lower layer's stator bar and upper layer stator bar is whole
Body is improved, and overall stiffness increases, and body vibration frequency rises；The conformal pad pad of lower layer is in lower layer's stator bar and lower layer
Between clamping plate, avoid generation localized contact that stress is caused to concentrate；The conformal pad pad in upper layer is in upper layer stator bar and upper laminated plank
Between, avoid generation localized contact that stress is caused to concentrate；The upper surface of upper laminated plank has chamber nonmetallic to accommodate taper type
Spring washer avoids the nonmetallic spring washer evolution of taper type, and the lower surface of cover board is contacted with the nonmetallic spring washer of taper type, to the non-gold of taper type
Belong to spring washer and generate pressing force, constructing operation can be convenient for using cover board and upper laminated plank composite structure, screw is by upper laminated plank, cone
The nonmetallic spring washer of platform shape, cover board are put together on together, make whole, avoid the nonmetallic spring washer rebound of taper type in assembling process
Power discharges and influences operation, and after the conformal pad in upper layer, the conformal pad of lower layer, bandage curing molding, removable screw makes the non-gold of taper type
Belong to spring washer and put aside elastic force formation expanding force by compression, achievees the effect that promote overall stiffness；For annular reinforcing structure, due to
Tied rope passes through the through hole that lower layer's stator bar and upper layer stator bar are formed and forms closed-loop, can be to the stator successively laminated
The conformal pad of retaining ring, lower layer's stator bar, interlayer, upper layer stator bar, conformal pad, sectorial block, planar spring, reinforcing ring are formed about
Beam is fixed, and tied rope forms binding closed-loop using the through hole that lower layer's stator bar and upper layer stator bar are formed, so that construction
Subsequent job can be carried out after stator winding assembles, tied rope is wound using the glass filament bundle of epoxy resin-impregnated, is convenient for
Across through hole, it is oppressed Bending Deformation state since planar spring is in, in the constraint fixed function of its screen resilience and tied rope
Under make the conformal pad of the stator retaining ring successively laminated, lower layer's stator bar, interlayer, upper layer stator bar, conformal pad, sectorial block, flat
Flat spring, reinforcing ring form interaction force, generate lower layer's stator bar and upper layer stator bar is firmly bound together
Effect, so that reinforcing ring, upper layer stator bar, lower layer's stator bar, stator retaining ring is closely fixed together, shape
It is several times as much as the cyclic structure of original structure at the moment of inertia, reinforces itself overall stiffness of involute position obviously, so that lower layer
The globality of taper type end construction based on stator bar and upper layer stator bar is improved, and overall stiffness increases, whole
Body vibration frequency rises；Conformal pad pad avoids generation localized contact from causing stress between upper layer stator bar and sectorial block
It concentrates；Reinforcing ring has annular groove, accommodates planar spring and sectorial block, and planar spring and sectorial block is avoided to escape；Radiation profiles add
The combination of strong structure and annular reinforcing structure forms high rigidity of structure caged reinforcement structure in stator end, can effectively mention
Stator winding end overall stiffness is risen, end elliptical vibration frequency is substantially change, avoids intrinsic driving frequency range, is protected
Demonstrate,prove generator operational safety.
Detailed description of the invention:
Fig. 1 is application schematic diagram of the present invention, and view section is stator end involute position.
Fig. 2 is the A of Fig. 1 to cross-sectional view.
Fig. 3 is the B-B cross-sectional view of Fig. 1.
Fig. 4 is the C-C cross-sectional view of Fig. 1.
Fig. 5 is stator end axial view.
Fig. 6 is using the stator end axial view after arrangement and method for construction of the present invention construction.
Specific embodiment: as shown in Figure 1, Figure 2, Figure 3, Figure 4, the structure by radiation profiles reinforcement structure 1 and ring-type
Reinforcement structure 2 is constituted, and the reinforcement structure 1 of radiation profiles is by lower laminated plank 3, the conformal pad 4 of lower layer, the conformal pad 5 in upper layer, upper laminated plank
6, the nonmetallic spring washer 7 of taper type, cover board 8, bandage 9, screw 10 are constituted, which is mounted on turbogenerator stator winding end portion
Involute position, the generatrix direction along stator end frustum structure are radially distributed, lower laminated plank 3 and lower layer's stator bar 11
Between pad the conformal pad 4 of lower layer, between upper laminated plank 6 and upper layer stator bar 12 pad the conformal pad 5 in upper layer, upper laminated plank 6
There is chamber 13 in upper surface, and to accommodate the nonmetallic spring washer 7 of taper type, lower surface and the nonmetallic spring washer 7 of taper type of cover board 8 are connect
Touching, screw 10 put together on upper laminated plank 6, the nonmetallic spring washer 7 of taper type, cover board 8 together, and bandage 9 passes through lower layer's stator bar
11 constitute closed-loop with the through hole that upper layer stator bar 12 is formed, to lower laminated plank 3, the conformal pad 4 of lower layer, lower layer's stator bar
11, the conformal pad 14 of interlayer, upper layer stator bar 12, the conformal pad 5 in upper layer, upper laminated plank 6, the nonmetallic spring washer 7 of taper type, cover board 8
The structure of composition forms binding constraint, and the nonmetallic spring washer 7 of taper type is in confined state；Annular reinforcing structure 2 is by reinforcing ring
15, planar spring 16, sectorial block 17, conformal pad 18, tied rope 19 are constituted, which is mounted on turbogenerator stator winding end portion
Involute position, reinforcing ring 15 have annular groove 20, built-in planar spring 16 and sectorial block 17, and tied rope 19 passes through lower layer's stator bar 11
Closed-loop is constituted with the through hole that upper layer stator bar 12 is formed, to stator retaining ring 21, lower layer's stator bar 11, the conformal pad of interlayer
14, the structure that upper layer stator bar 12, conformal pad 18, sectorial block 17, planar spring (16), reinforcing ring 15 form forms binding about
Beam, planar spring 16 are in and are oppressed Bending Deformation state, and planar spring 16 is placed in the annular groove 20 of sectorial block 17 Yu reinforcing ring 15
Between inner surface, conformal pad 18 is placed between sectorial block 17 and upper layer stator bar 12；
The present invention is suitable for large turbo-type generator field, since bandage 9 passes through lower layer's stator bar 11 and upper layer stator
The through hole that bar 12 is formed forms closed-loop, can be to lower laminated plank 3, the conformal pad 4 of lower layer, lower layer's stator line successively laminated
The conformal pad 14 of stick 11, interlayer, upper layer stator bar 12, the conformal pad 5 in upper layer, upper laminated plank 6, the nonmetallic spring washer 7 of taper type, cover board
8, which form constraint, fixes, and bandage 9 forms binding closing using the through hole that lower layer's stator bar 11 and upper layer stator bar 12 are formed
Ring is pressed so that construction can carry out subsequent job after stator winding assembles since the nonmetallic spring washer 7 of taper type is in
Contracting state makes the lower laminated plank 3 successively laminated, lower layer under the fixed interaction of the constraint of its screen resilience tensioner and bandage 9
The conformal pad 14 of conformal pad 4, lower layer's stator bar 11, interlayer, upper layer stator bar 12, the conformal pad 5 in upper layer, upper laminated plank 6, frustum
The nonmetallic spring washer 7 of shape, cover board 8 form interaction force, cause lower layer's stator bar 11 and upper layer stator bar 12 is secured
Binding and fixing effect together so that the taper type end based on lower layer's stator bar 11 and upper layer stator bar 12 is tied
The globality of structure is improved, and overall stiffness increases, and body vibration frequency rises；The conformal liner of pad 4 of lower layer is in lower layer's stator line
Between stick 11 and lower laminated plank 3, the conformal pad 4 of lower layer is the terylene felt of epoxy resin-impregnated, can conformal filling lower layer stator line
Irregular gap between stick 11 and lower laminated plank 3 can make lower laminated plank 3 and lower layer's stator bar 11 comprehensive after construction solidification
Reliable transmitting pressure texture, avoids generation localized contact that stress is caused to concentrate；The conformal liner of pad 5 in upper layer is in upper layer stator bar
Between 12 and upper laminated plank 6, the conformal pad 5 in upper layer is the terylene felt of epoxy resin-impregnated, can conformal filling upper layer stator bar
Irregular gap between 12 and upper laminated plank 6 can make laminated plank 6 and upper layer stator bar 12 comprehensively may be used after construction solidification
The transmitting pressure texture leaned on avoids generation localized contact that stress is caused to concentrate；The upper surface of upper laminated plank 6 has chamber 13 to hold
The nonmetallic spring washer 7 of taper type of receiving avoids the nonmetallic spring washer 7 of taper type from escaping, the lower surface of cover board 8 and the nonmetallic spring washer of taper type
7 contacts generate pressing force to the nonmetallic spring washer of taper type 7, and being combined using upper laminated plank 6 with the structure of cover board 8 can be convenient for applying
Work installation, screw 10 put together on upper laminated plank 6, the nonmetallic spring washer 7 of taper type, cover board 8 together, make whole, avoid
Nonmetallic 7 screen resilience of spring washer of taper type discharges and influences operation in assembling process, when the conformal pad 5 in upper layer, the conformal pad 4 of lower layer, ties up
After 9 curing molding of band, removable screw 10 makes the nonmetallic spring washer 7 of taper type be put aside elastic force by compression and forms expanding force, reaches and mention
Rise the effect of overall stiffness；Bandage 9 is the glass filament bundle for impregnating room temperature curing epoxy, is in soft condition, energy before solidification
The operation of through hole is enough fitted through, commensurate structure size is fitted closely with by binding structure, and being formed after solidification has fastening strong
The closed-loop of degree, the nonmetallic spring washer 7 of taper type are laminated epoxy glass-cloth board material, and being under pressure can be with deformation occurs and generates
Continue elastic force, the nonmetallic spring washer 7 of taper type is different from the planar structure of plain washer, and nonmetallic 7 shape of spring washer of taper type is similar
Frustum structure is presented in plate edge, and flexible deformation is generated when being compressed, and puts aside screen resilience；Lower laminated plank 3, upper laminated plank 6, lid
Plate 8 be also laminated epoxy glass-cloth board material, all have excellent insulation performance, not by end electromagnetic force influence, do not generate electromagnetism
The stable feature of loss, performance, will not bring accident potential；The quantity for installing the reinforcement structure 1 of radiation profiles can be according to institute
Frequency data decision need to be adjusted, the installation number the more, and stator end overall stiffness promotes effect and is more obvious, stator terminal after construction
Portion's vibration frequency rising value is higher, and stator end vibration frequency rises to qualified number after selecting suitable quantity that can make construction
It is worth in range, the installation direction of the reinforcement structure 1 of radiation profiles is the generatrix direction of its long axis Yu stator end frustum structure
In parallel, the quantity of the nonmetallic spring washer 7 of taper type and bandage 9 is determined by specific structure demand, depending on stator end length and
The quantity of through hole；If the quantity of nonmetallic spring washer 7 is two, the quantity of bandage 9 is three；
Closed-loop, energy are formed since tied rope 19 passes through the through hole that lower layer's stator bar 11 and upper layer stator bar 12 are formed
It is enough to the conformal pad 14 of stator retaining ring 21, lower layer's stator bar 11, interlayer successively laminated, upper layer stator bar 12, conformal pad 18,
Sectorial block 17, planar spring 16, reinforcing ring 15 form constraint and fix, and tied rope 19 utilizes lower layer's stator bar 11 and upper layer stator line
The through hole that stick 12 is formed forms binding closed-loop, so that construction can carry out subsequent job after stator winding assembles,
Tied rope 19 is wound using the glass filament bundle of epoxy resin-impregnated, convenient for being oppressed since planar spring 16 is in across through hole
Bending Deformation state keeps the stator retaining ring 21 successively laminated, lower layer fixed under the constraint fixed function of its screen resilience and tied rope 19
The conformal pad 14 of sub-line stick 11, interlayer, upper layer stator bar 12, conformal pad 18, sectorial block 17, planar spring 16,15 shape of reinforcing ring
At interaction force, generates lower layer's stator bar 11 and upper layer stator bar 12 is firmly bound effect together, also can
So that reinforcing ring 15, upper layer stator bar 12, lower layer's stator bar 11, stator retaining ring 21 is closely fixed together, is formed
The moment of inertia is several times as much as the cyclic structure of original structure, reinforces itself overall stiffness of involute position obviously, so that lower layer is fixed
The globality of taper type end construction based on sub-line stick 11 and upper layer stator bar 12 is improved, and overall stiffness increases,
Body vibration frequency rises；The conformal liner of pad 18 avoids generating localized contact between upper layer stator bar 12 and sectorial block 17
Stress is caused to concentrate；Reinforcing ring 15 has annular groove 20, accommodates planar spring 16 and sectorial block 17, avoids planar spring 16 and sectorial block
17 evolutions fall off；
Reinforcing ring 15 has excellent mechanical performance and insulating properties by the glass filament bundle coiling of epoxy resin-impregnated after solidification
Can, planar spring 16 is made of stainless steel, and can also be manufactured, be avoided by generator unit stator electromagnetism using laminated epoxy glass-cloth board
Field action leads to the problem of fever and electromagnetic force, and sectorial block 17 is laminated epoxy glass-cloth board material, has excellent mechanical performance
And insulation performance, conformal pad 18, can conformal filling upper layer stator bar 12 and sectors using the terylene felt of epoxy resin-impregnated
Irregular gap between block 17, sectorial block 17 and upper layer stator bar 12 can be made after construction solidification, and reliable transmitting is pressed comprehensively
Power structure avoids generation localized contact that stress is caused to concentrate, and the quantity of planar spring 16 and sectorial block 17 can choose as stator
The value range of the 1/N of slot number, N are generally four to ten six；Fig. 5 is not regarded using the stator end of arrangement and method for construction of the present invention construction
Figure, Fig. 6 are that the view, which is shown, is mounted with eight sets of radiation along stator using the stator end view after arrangement and method for construction of the present invention construction
The reinforcement structure 1 and a set of annular reinforcing structure 2 of the generatrix direction distribution of end frustum structure.
Claims (1)
1. a kind of combination frustum spring washer form stator end reinforcement structure, it is characterized in that: by radiation profiles reinforcement structure (1) and
Annular reinforcing structure (2) is constituted, and the reinforcement structure (1) of radiation profiles is conformal by lower laminated plank (3), the conformal pad (4) of lower layer, upper layer
(5), upper laminated plank (6), the nonmetallic spring washer of taper type (7), cover board (8), bandage (9), screw (10) composition are padded, frustum bullet is combined
Pulvilliform formula stator end reinforcement structure is mounted on turbogenerator stator winding end portion involute position, along stator end frustum knot
The generatrix direction of structure is radially distributed, and the conformal pad (4) of lower layer is padded between lower laminated plank (3) and lower layer's stator bar (11),
The conformal pad (5) in upper layer is padded between upper laminated plank (6) and upper layer stator bar (12), there is chamber in the upper surface of upper laminated plank (6)
(13), to accommodate the nonmetallic spring washer of taper type (7), the lower surface of cover board (8) is contacted with the nonmetallic spring washer of taper type (7), spiral shell
Upper laminated plank (6), the nonmetallic spring washer of taper type (7), cover board (8) are fixed together conjunction by nail (10), and bandage (9) passes through lower layer
The through hole that stator bar (11) and upper layer stator bar (12) are formed constitutes closed-loop, to lower laminated plank (3), the conformal pad of lower layer
(4), the conformal pad (14) of lower layer's stator bar (11), interlayer, upper layer stator bar (12), conformal pad (5), the upper laminated plank in upper layer
(6), the structure formation binding constraint of the nonmetallic spring washer of taper type (7), cover board (8) composition, the nonmetallic spring washer of taper type (7) are in
Confined state；Annular reinforcing structure (2) by reinforcing ring (15), planar spring (16), sectorial block (17), conformal pad (18), tie up
Rope (19) is constituted, and annular reinforcing structure (2) is mounted on turbogenerator stator winding end portion involute position, and reinforcing ring (15) has
Annular groove (20), built-in planar spring (16) and sectorial block (17), tied rope (19) pass through lower layer's stator bar (11) and upper layer stator
The through hole that bar (12) is formed constitutes closed-loop, to stator retaining ring (21), lower layer's stator bar (11), the conformal pad of interlayer
(14), the structure of upper layer stator bar (12), conformal pad (18), sectorial block (17), planar spring (16), reinforcing ring (15) composition
Form binding constraint, planar spring (16) is in and is oppressed Bending Deformation state, planar spring (16) be placed in sectorial block (17) with
Between annular groove (20) inner surface of reinforcing ring (15), conformal pad (18) be placed in sectorial block (17) and upper layer stator bar (12) it
Between.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811073115.8A CN109193993A (en) | 2018-09-14 | 2018-09-14 | A kind of combination frustum spring washer form stator end reinforcement structure |
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| CN201811073115.8A CN109193993A (en) | 2018-09-14 | 2018-09-14 | A kind of combination frustum spring washer form stator end reinforcement structure |
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| CN109193993A true CN109193993A (en) | 2019-01-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968576A (en) * | 2021-04-13 | 2021-06-15 | 哈尔滨电机厂有限责任公司 | Turbine generator stator end nose end loosening treatment process method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112968576A (en) * | 2021-04-13 | 2021-06-15 | 哈尔滨电机厂有限责任公司 | Turbine generator stator end nose end loosening treatment process method |
| CN112968576B (en) * | 2021-04-13 | 2022-10-25 | 哈尔滨电机厂有限责任公司 | Turbine generator stator end nose end loosening treatment process method |
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Application publication date: 20190111 |