CN109067050A - A kind of variable rigidity combination ripple spring washer form stator end reinforcement structure - Google Patents
A kind of variable rigidity combination ripple spring washer form stator end reinforcement structure Download PDFInfo
- Publication number
- CN109067050A CN109067050A CN201811080018.1A CN201811080018A CN109067050A CN 109067050 A CN109067050 A CN 109067050A CN 201811080018 A CN201811080018 A CN 201811080018A CN 109067050 A CN109067050 A CN 109067050A
- Authority
- CN
- China
- Prior art keywords
- stator
- upper layer
- stator bar
- spring washer
- lower layer
- 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.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The present invention discloses a kind of variable rigidity combination ripple 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, using screw plug structure can be adjusted again after binding structure solidifies ripple spring washer by decrement, adjustment end elliptical vibration frequency can be facilitated by reaching, it is allowed to avoid the purpose of intrinsic driving frequency range.
Description
Technical field:
The present invention relates to a kind of variable rigidities to combine ripple spring washer form stator end reinforcement structure.
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 95-110Hz
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 ", by support ring, inclined wedge and insulation
The composition such as screw rod and nut, interior pushing out ring can realize the variation of fastening force by adjusting insulation blanket stud and nut, it is fixed to reach change
The purpose of sub- end elliptical vibration frequency, but should structure is complicated, cost is high, it is stringent to require mounting and adjusting, there is also adjustment zero
Part is more, insulation blanket stud and nut check are difficult, is easy to induce the hidden danger for loosening abrasion, using being restricted；And this scheme
It 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；It takes in stator end
The method bound is implemented at involute position, and there is also an operational issues, this is because binding strap is not solid in process of binding
Change, binding rigidity cannot be provided, just stator end overall stiffness can be made to change after can only solidifying, so being operated in binding
Cheng Wufa precognition is constructed finishing as a result, be easy to causeing frequency shift and requiring incongruent problem.
Summary of the invention: the present invention discloses a kind of variable rigidity combination ripple spring washer form stator end reinforcement structure, has
Structure type unlike previous technologies is made of the reinforcement structure of radiation profiles and annular reinforcing structure, and radiation profiles add
Strong structure utilizes the elastic acting force of corrugated spring washer savings, and 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, substantially change end elliptical vibration frequency, using screw plug structure
Can be adjusted again after binding structure solidifies corrugated spring washer by decrement, reach can facilitate adjustment end elliptical vibration frequency
Rate is allowed to avoid intrinsic driving frequency range, guarantees the purpose of generator operational safety；It is infused by the perforation of plug screw thread surface
Glue groove is irrigated epoxy resin, can achieve the rebound that corrugated spring washer is born using the epoxy resin auxiliary plug screw of perfusion
Power, lock plug screw, the purpose for avoiding plug screw from falling off.The technical solution of the present invention is as follows: a kind of variable rigidity combines ripple spring washer shape
Formula stator end reinforcement structure, the structure are made of the reinforcement structure of radiation profiles and annular reinforcing structure, and radiation profiles add
Strong structure is by lower laminated plank, the conformal pad of lower layer, the conformal pad in upper layer, upper laminated plank, corrugated spring washer, cover board, bandage, plug 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, and to accommodate corrugated spring washer, plug screw screws in the spiral shell of cover board
Hole is contacted with corrugated spring washer, and bandage passes through the through hole that lower layer's stator bar and upper layer stator bar are formed and constitutes closed-loop,
To lower laminated plank, 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, upper layer folder
The structure formation binding constraint of plate, corrugated spring washer, cover board, plug screw composition, corrugated spring washer can be adjusted by plug screw and be pressed
Contracting amount；Annular reinforcing structure is made of reinforcing ring, planar spring, sectorial block, conformal pad, tied rope, which is mounted on steamer hair
Motor stator winding end involute position, reinforcing ring have annular groove, built-in planar spring and sectorial block, and tied rope passes through lower layer's stator
The through hole that bar and upper layer stator bar are formed constitutes closed-loop, to stator retaining ring, lower layer's stator bar, the conformal pad of interlayer,
The structure formation binding constraint of upper layer stator bar, conformal pad, sectorial block, planar spring, reinforcing ring composition, planar spring are in
It is oppressed Bending Deformation state, planar spring is placed between sectorial block and the annular groove inner surface of reinforcing ring, and conformal pad is placed in sector
Between block and upper layer stator bar, the thread surface of plug screw has the perforation injecting glue slot parallel with axis.
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, corrugated spring washer, cover board, plug screw formed constraint fix, tie up
Band 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 in stator
Winding carries out subsequent job after assembling, bandage is wound using the glass filament bundle of epoxy resin-impregnated, is convenient for across through hole,
Since corrugated spring washer is in confined state, under the constraint fixed function of its screen resilience and bandage, make successively to laminate down
Laminated plank, 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, upper laminated plank, wave
Line shape spring washer, plug screw, cover board form interaction force, generate lower layer's stator bar and upper layer stator bar is firmly bound
Effect together, so that the globality of the taper type end construction based on lower layer's stator bar and upper layer stator bar is mentioned
Height, overall stiffness increase, and body vibration frequency rises；The conformal pad pad of lower layer between lower layer's stator bar and lower laminated plank,
Avoid generation localized contact that stress is caused to concentrate；The conformal pad pad in upper layer avoids between upper layer stator bar and upper laminated plank
Generating localized contact causes stress to concentrate；The upper surface of upper laminated plank has chamber to accommodate corrugated spring washer, avoids corrugated
Spring washer evolution, the interior plug screw screwed in of cover board are contacted with corrugated spring washer, pressing force are generated to corrugated spring washer, using screw plug structure
Can be adjusted again after binding structure solidifies corrugated spring washer by decrement, reach can facilitate adjustment end elliptical vibration frequency
Rate is allowed to avoid intrinsic driving frequency range, guarantees the purpose of generator operational safety；The adjustment of end elliptical vibration frequency is qualified
Afterwards, epoxy resin is irrigated by the perforation injecting glue slot of plug screw thread surface, can achieve auxiliary using the epoxy resin of perfusion
Plug screw is helped to bear the screen resilience of corrugated spring washer, lock plug screw, the purpose for avoiding plug screw from falling off；For annular reinforcing structure, by
The through hole that lower layer's stator bar and upper layer stator bar are formed is passed through in tied rope and forms closed-loop, can be determined what is successively laminated
The conformal pad of sub- retaining ring, lower layer's stator bar, interlayer, upper layer stator bar, conformal pad, sectorial block, planar spring, reinforcing ring are formed
Constraint 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 applying
Work can carry out subsequent job after stator winding assembles, and tied rope is wound using the glass filament bundle of epoxy resin-impregnated, just
In passing through through hole, it is oppressed Bending Deformation state since planar spring is in, in the fixed work of the constraint of its screen resilience and tied rope
Make under the conformal pad of the stator retaining ring successively laminated, lower layer's stator bar, interlayer, upper layer stator bar, conformal pad, sectorial block,
Planar spring, reinforcing ring form interaction force, generate lower layer's stator bar and upper layer stator bar is firmly bound one
The effect risen, can also make reinforcing ring, upper layer stator bar, lower layer's stator bar, stator retaining ring are closely fixed 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, so that under
The globality of taper type end construction based on layer stator bar and upper layer stator bar is improved, overall stiffness increase,
Body vibration frequency rises；Conformal pad pad avoids generation localized contact from causing to answer between upper layer stator bar and sectorial block
Power is concentrated；Reinforcing ring has annular groove, accommodates planar spring and sectorial block, and planar spring and sectorial block is avoided to escape；Radiation profiles
The combination of reinforcement structure and annular reinforcing structure forms high rigidity of structure caged reinforcement structure in stator end, can be effective
Stator winding end overall stiffness is promoted, end elliptical vibration frequency is substantially change, avoids intrinsic driving frequency range.
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.
Fig. 7 is screw plug structure schematic diagram.
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, corrugated spring washer 7, cover board 8, bandage 9, plug 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, and are served as a contrast between lower laminated plank 3 and lower layer's stator bar 11
The conformal pad 4 of lower layer is padded, the conformal pad 5 in upper layer, the upper surface of upper laminated plank 6 are padded between upper laminated plank 6 and upper layer stator bar 12
There is chamber 13, to accommodate corrugated spring washer 7, the screw hole that plug screw 10 screws in cover board 8 is contacted with corrugated spring washer 7, and bandage 9 passes through
The through hole that lower layer's stator bar 11 and upper layer stator bar 12 are formed constitutes closed-loop, to lower laminated plank 3, the conformal pad 4 of lower layer,
The conformal pad 14 of lower layer's stator bar 11, interlayer, upper layer stator bar 12, the conformal pad 5 in upper layer, upper laminated plank 6, corrugated spring washer 7,
The structure that cover board 8 forms forms binding constraint, and corrugated spring washer 7 can be adjusted by plug screw 10 by decrement；Ring-type reinforces knot
Structure 2 is made of reinforcing ring 15, planar spring 16, sectorial block 17, conformal pad 18, tied rope 19, which is mounted on steam turbine generator
Stator winding end involute position, reinforcing ring 15 have annular groove 20, and built-in planar spring 16 and sectorial block 17, tied rope 19 pass through down
The through hole that layer stator bar 11 and upper layer stator bar 12 are formed constitutes closed-loop, to stator retaining ring 21, lower layer's stator bar
11, the knot that the conformal pad 14 of interlayer, upper layer stator bar 12, conformal pad 18, sectorial block 17, planar spring 16, reinforcing ring 15 form
It is configured to binding constraint, planar spring 16 is in the Bending Deformation state that is oppressed, and planar spring 16 is placed in sectorial block 17 and reinforces
Between 20 inner surface of annular groove of ring 15, conformal pad 18 is placed between sectorial block 17 and upper layer stator bar 12, the screw thread of plug screw 10
There is the perforation injecting glue slot 22 parallel with axis on surface；Since bandage 9 passes through lower layer's stator bar 11 and 12 shape of upper layer stator bar
At through hole formed closed-loop, can be to lower laminated plank 3, the conformal pad 4 of lower layer, lower layer's stator bar 11, layer successively laminated
Between conformal pad 14, upper layer stator bar 12, the conformal pad 5 in upper layer, upper laminated plank 6, corrugated spring washer 7, cover board 8, plug screw 10 formation
Constraint is fixed, and bandage 9 forms binding closed-loop using the through hole that lower layer's stator bar 11 and upper layer stator bar 12 are formed, and is made
Must construct can carry out subsequent job after stator winding assembles, since corrugated spring washer 7 is in confined state, at it
Under the fixed interaction of the constraint of screen resilience tensioner and bandage 9, make the conformal pad 4 of the lower laminated plank 3 successively laminated, lower layer, under
Layer 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, corrugated spring washer 7, lid
Plate 8 forms interaction force, cause lower layer's stator bar 11 and upper layer stator bar 12 by firm binding and fixing together with
Effect so that the globality of the taper type end construction based on lower layer's stator bar 11 and upper layer stator bar 12 is mentioned
Height, overall stiffness increase, and body vibration frequency rises；Lower layer's conformal pad 4 liner lower layer's stator bar 11 and lower laminated plank 3 it
Between, the conformal pad 4 of lower layer is the terylene felt of epoxy resin-impregnated, can conformal filling lower layer stator bar 11 and lower laminated plank 3 it
Between irregular gap, lower laminated plank 3 and lower layer's stator bar 11 reliable transmitting pressure knot comprehensively can be made after construction solidification
Structure avoids generation localized contact that stress is caused to concentrate；Upper layer conformal pad 5 liner upper layer stator bar 12 and upper laminated plank 6 it
Between, the conformal pad 5 in upper layer is the terylene felt of epoxy resin-impregnated, can conformal filling upper layer stator bar 12 and upper laminated plank 6 it
Between irregular gap, laminated plank 6 and upper layer stator bar 12 reliable transmitting pressure knot comprehensively can be made after construction solidification
Structure avoids generation localized contact that stress is caused to concentrate；The upper surface of upper laminated plank 6 has chamber 13 to accommodate corrugated spring washer 7,
Corrugated spring washer 7 is avoided to escape, the plug screw 10 screwed in cover board 8 is contacted with corrugated spring washer 7, generates pressure to corrugated spring washer 7
Clamp force, using 10 structure of plug screw can be adjusted again after binding structure solidifies corrugated spring washer 7 by decrement, reaching can be square
Just end elliptical vibration frequency is adjusted, is allowed to avoid intrinsic driving frequency range, guarantees the purpose of generator operational safety；End
After the adjustment of elliptical vibration frequency is qualified, epoxy resin is irrigated by the perforation injecting glue slot 22 of 10 thread surface of plug screw, it can be with
Reach the screen resilience that corrugated spring washer 7 is born using the epoxy resin auxiliary plug screw 10 of perfusion, lock plug screw 10, avoids plug screw 10
The purpose to fall off；As shown in fig. 7, plug screw 10 is manufactured using laminated epoxy glass-cloth board, thread surface has parallel with axis pass through
Logical injecting glue slot 22；
Bandage 9 is the glass filament bundle for impregnating room temperature curing epoxy, is in soft condition before solidification, can fit through
The operation of through hole, commensurate structure size, fits closely with by binding structure, and the closing with fastening strength is formed after solidification
Ring, corrugated spring washer 7 are laminated epoxy glass-cloth board material, and preferably, being under pressure can be with deformation occurs and it is lasting to generate for elasticity
Elastic force, shape are the thin plates that wave state is presented, and lower laminated plank 3, upper laminated plank 6, cover board 8 are also laminated epoxy glass cloth plate
Matter, all have excellent insulation performance, not by end electromagnetic force influence, do not generate the stable feature of electromagnetic consumable, performance, will not band
Come accident potential；The quantity of reinforcement structure 1 for installing radiation profiles can determine according to required adjustment frequency data, installation number
More more, stator end overall stiffness promotes effect and is more obvious, and stator end vibration frequency rising value is higher after construction, and selection is closed
Suitable quantity can be such that stator end vibration frequency after construction rises in qualified numberical range, the reinforcement structure of radiation profiles
1 installation direction is that its long axis is parallel with the generatrix direction of stator end frustum structure；
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
Deformed state makes the stator retaining ring 21 successively laminated, lower layer's stator line under the constraint fixed function of its screen resilience and tied rope 19
The conformal pad 14 of stick 11, interlayer, upper layer stator bar 12, conformal pad 18, sectorial block 17, planar spring 16, reinforcing ring 15 form phase
Interreaction force, generates lower layer's stator bar 11 and upper layer stator bar 12 is firmly bound effect together, can also make
Reinforcing ring 15, upper layer stator bar 12, lower layer's stator bar 11, stator retaining ring 21 are closely fixed together, and inertia is formed
Square is several times as much as the cyclic structure of original structure, reinforces itself overall stiffness of involute position obviously, so that lower layer's stator line
The globality of taper type end construction based on stick 11 and upper layer stator bar 12 is improved, and overall stiffness increases, whole
Vibration frequency rises；The conformal liner of pad 18 avoids generation localized contact from causing between upper layer stator bar 12 and sectorial block 17
Stress is concentrated；Reinforcing ring 15 has annular groove 20, accommodates planar spring 16 and sectorial block 17, and planar spring 16 and sectorial block 17 is avoided to escape
It falls off out；
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 using the stator end view of arrangement and method for construction of the present invention construction, and Fig. 6 is to be applied using arrangement and method for construction of the present invention
Stator end view after work, which, which shows, is mounted with what eight sets of radiation were distributed along the generatrix direction of stator end frustum structure
Reinforcement structure 1 and a set of annular reinforcing structure 2.
Claims (1)
1. a kind of variable rigidity combines ripple spring washer form stator end reinforcement structure, it is characterized in that: by the reinforcement of radiation profiles
Structure (1) and annular reinforcing structure (2) are constituted, and the reinforcement structure (1) of radiation profiles is by lower laminated plank (3), the conformal pad of lower layer
(4), the conformal pad (5) in upper layer, upper laminated plank (6), corrugated spring washer (7), cover board (8), bandage (9), plug screw (10) are constituted, radiation
The reinforcement structure (1) of distribution is mounted on turbogenerator stator winding end portion involute position, along stator end frustum structure
Generatrix direction is radially distributed, and the conformal pad (4) of lower layer, upper layer are padded between lower laminated plank (3) and lower layer's stator bar (11)
The conformal pad (5) in upper layer is padded between clamping plate (6) and upper layer stator bar (12), the upper surface of upper laminated plank (6) has chamber (13),
To accommodate corrugated spring washer (7), the screw hole that plug screw (10) screws in cover board (8) is contacted with corrugated spring washer (7), and bandage (9) is worn
It crosses the through hole that lower layer's stator bar (11) and upper layer stator bar (12) are formed and constitutes closed-loop, to lower laminated plank (3), lower layer
Conformal pad (4), lower layer's stator bar (11), the conformal pad (14) of interlayer, upper layer stator bar (12), conformal pad (5), upper layer in upper layer
The structure formation binding constraint of clamping plate (6), corrugated spring washer (7), cover board (8) composition, corrugated spring washer (7) pass through plug screw (10)
Adjustment is by decrement；Annular reinforcing structure (2) by reinforcing ring (15), planar spring (16), sectorial block (17), conformal pad (18),
Tied rope (19) is constituted, and annular reinforcing structure (2) 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), tied rope (19) passes through lower layer's stator bar (11) and upper layer is fixed
The through hole that sub-line stick (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, the thread surface of plug screw (10) has the perforation injecting glue slot (22) parallel with axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080018.1A CN109067050A (en) | 2018-09-17 | 2018-09-17 | A kind of variable rigidity combination ripple spring washer form stator end reinforcement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080018.1A CN109067050A (en) | 2018-09-17 | 2018-09-17 | A kind of variable rigidity combination ripple spring washer form stator end reinforcement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109067050A true CN109067050A (en) | 2018-12-21 |
Family
ID=64762698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811080018.1A Pending CN109067050A (en) | 2018-09-17 | 2018-09-17 | A kind of variable rigidity combination ripple spring washer form stator end reinforcement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109067050A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3437859A (en) * | 1966-05-23 | 1969-04-08 | Gen Electric | Winding support structure for a dynamoelectric machine |
| JPS5910148A (en) * | 1982-07-09 | 1984-01-19 | Toshiba Corp | Fixing device for stator coil |
| CN101699727A (en) * | 2009-11-13 | 2010-04-28 | 湘潭电机股份有限公司 | Motor stator coil end part fixing method |
| CN102820725A (en) * | 2012-08-22 | 2012-12-12 | 哈尔滨电机厂有限责任公司 | Method for fixing end of stator winding of 1250MW nuclear-power half-speed turbine generator |
| CN108448831A (en) * | 2018-03-20 | 2018-08-24 | 哈尔滨电机厂有限责任公司 | A kind of generator stator end overall stiffness reinforcement structure construction method |
-
2018
- 2018-09-17 CN CN201811080018.1A patent/CN109067050A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3437859A (en) * | 1966-05-23 | 1969-04-08 | Gen Electric | Winding support structure for a dynamoelectric machine |
| JPS5910148A (en) * | 1982-07-09 | 1984-01-19 | Toshiba Corp | Fixing device for stator coil |
| CN101699727A (en) * | 2009-11-13 | 2010-04-28 | 湘潭电机股份有限公司 | Motor stator coil end part fixing method |
| CN102820725A (en) * | 2012-08-22 | 2012-12-12 | 哈尔滨电机厂有限责任公司 | Method for fixing end of stator winding of 1250MW nuclear-power half-speed turbine generator |
| CN108448831A (en) * | 2018-03-20 | 2018-08-24 | 哈尔滨电机厂有限责任公司 | A kind of generator stator end overall stiffness reinforcement structure construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4488079A (en) | Dynamoelectric machine with stator coil end turn support system | |
| US7893358B2 (en) | Conductor bar for the stator of a generator, and method for its production | |
| US4469973A (en) | Resiliently suspended stator for a dynamo-electrical synchronous machine | |
| RU2630480C2 (en) | End cover of rotor for electric generators | |
| CN108448831B (en) | Construction method for integral rigidity reinforcing structure of end part of generator stator | |
| CN109067050A (en) | A kind of variable rigidity combination ripple spring washer form stator end reinforcement structure | |
| US20170016428A1 (en) | Wind turbine having a fiber winding | |
| CN208904848U (en) | A kind of nonmetallic spring washer form involute position Tensioning structure of screw auxiliary positioning taper type | |
| CN109193993A (en) | A kind of combination frustum spring washer form stator end reinforcement structure | |
| CN208862656U (en) | A kind of reinforcement loop type involute position Tensioning structure | |
| CA1171449A (en) | Method and apparatus for securing end winding conductors | |
| RU2711117C1 (en) | Generator rotor for a generator of a wind-driven power plant or a hydroelectric power plant, as well as a generator, a wind-driven power plant and a hydroelectric power plant with such a generator | |
| CN103915959A (en) | Potting technology for motor stator notch | |
| CN109067051A (en) | A kind of combination ripple spring washer form stator end reinforcement structure | |
| US3435517A (en) | Method of making a tieless bracing of stator coil end turns | |
| CN208904795U (en) | A kind of ripple spring washer form involute position Tensioning structure | |
| CN208862657U (en) | A kind of variable rigidity ripple spring washer form involute position Tensioning structure | |
| JPS5883548A (en) | Rotary electric machine | |
| CN208862658U (en) | A kind of screw auxiliary positioning ripple spring washer form involute position Tensioning structure | |
| CN109193994A (en) | A kind of variable rigidity combination frustum spring washer form stator end reinforcement structure | |
| CN208904796U (en) | A kind of nonmetallic spring washer form involute position Tensioning structure of variable rigidity taper type | |
| CN208862659U (en) | A kind of nonmetallic spring washer form involute position Tensioning structure of taper type | |
| US3320452A (en) | Tieless bracing of stator coil end turns | |
| CN108900025A (en) | A kind of composite construction cage type stator end rigidity enhancing structure | |
| CN209691546U (en) | A kind of amorphous alloy transformer optimizing the strapped structure of iron core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181221 |
|
| WD01 | Invention patent application deemed withdrawn after publication |