CN109067051A - A kind of combination ripple spring washer form stator end reinforcement structure - Google Patents
A kind of combination ripple spring washer form stator end reinforcement structure Download PDFInfo
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- CN109067051A CN109067051A CN201811080223.8A CN201811080223A CN109067051A CN 109067051 A CN109067051 A CN 109067051A CN 201811080223 A CN201811080223 A CN 201811080223A CN 109067051 A CN109067051 A CN 109067051A
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- stator
- stator bar
- upper layer
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- lower layer
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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 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 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 is substantially change end elliptical vibration frequency, avoids intrinsic driving frequency range.
Description
Technical field:
The present invention relates to a kind of combination ripple 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 ripple 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
The elastic acting force put aside with corrugated spring washer, the binding structure formation for implementing postorder remedial measure are tightened power, are made
Layer stator bar is closely fixed together with lower layer's stator bar, itself overall stiffness of involute position is made to obtain obviously adding
By force, annular reinforcing structure utilizes the elastic acting force of planar spring savings, the binding structure for implementing postorder remedial measure
Power is tightened in formation, and reinforcing ring, upper layer stator bar, lower layer's stator bar, stator retaining ring is made closely to be fixed together, and 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；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,
Guarantee generator operational safety.The technical solution of the present invention is as follows: a kind of combination ripple spring washer form stator end reinforcement structure, it should
Structure is made of the reinforcement structure of radiation profiles and annular reinforcing structure, and the reinforcement structure of radiation profiles is by lower laminated plank, lower layer
Conformal pad, the conformal pad in upper layer, upper laminated plank, corrugated spring washer, cover board, bandage, screw are constituted, which is mounted on turbine generator
Machine stator winding overhang involute position, the generatrix direction along stator end frustum structure are radially distributed, lower laminated plank with
The conformal pad of lower layer is padded between lower layer's stator bar, and the conformal pad in upper layer, upper layer are padded between upper laminated plank and upper layer stator bar
There is chamber in the upper surface of clamping plate, and to accommodate corrugated spring washer, the lower surface of cover board is contacted with corrugated spring washer, and screw is by upper layer
Clamping plate, corrugated spring washer, cover board are put together on together, and bandage passes through the through hole that lower layer's stator bar and upper layer stator bar are formed
Closed-loop is constituted, it is suitable to lower laminated plank, the conformal pad of lower layer, lower layer's stator bar, the conformal pad of interlayer, upper layer stator bar, upper layer
The structure formation binding constraint of shape pad, upper laminated plank, corrugated spring washer, cover board composition, corrugated spring washer are in confined state；
Annular reinforcing structure is made of reinforcing ring, planar spring, sectorial block, conformal pad, tied rope, and it is fixed which is mounted on steam turbine generator
Sub- winding overhang involute position, reinforcing ring have annular groove, built-in planar spring and a sectorial block, tied rope pass through lower layer's stator bar with
The through hole that upper layer stator bar is formed constitutes closed-loop, fixed to stator retaining ring, lower layer's stator bar, the conformal pad of interlayer, upper layer
The structure formation binding constraint of sub-line stick, conformal pad, sectorial block, planar spring, reinforcing ring composition, planar spring are in and are oppressed
Deformed state, planar spring are placed between sectorial block and the annular groove inner surface of reinforcing ring, and conformal pad is placed in sectorial block and upper layer is fixed
Between sub-line stick.
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 formed constraint fix, bandage benefit
Binding closed-loop is formed with the through hole that lower layer's stator bar and upper layer stator bar are formed, so that construction can be in stator winding
Carrying out subsequent job after assembly, bandage is wound using the glass filament bundle of epoxy resin-impregnated, convenient for across through hole, due to
Corrugated spring washer is in confined state, under the constraint fixed function of its screen resilience and bandage, presss from both sides the lower layer successively laminated
It is plate, 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, corrugated
Spring washer, cover board form interaction force, generate lower layer's stator bar and upper layer stator bar is firmly bound effect together
Fruit, so that the globality of the taper type end construction based on lower layer's stator bar and upper layer stator bar is improved, it is whole
Rigidity increases, and body vibration frequency rises；The conformal pad pad of lower layer avoids generating between lower layer's stator bar and lower laminated plank
Localized contact causes stress to concentrate；The conformal pad pad in upper layer avoids generating part between upper layer stator bar and upper laminated plank
Contact causes stress to concentrate；There is chamber in the upper surface of upper laminated plank accommodating corrugated spring washer, and corrugated spring washer is avoided to escape,
The lower surface of cover board is contacted with corrugated spring washer, is generated pressing force to corrugated spring washer, is combined knot with upper laminated plank using cover board
Structure can be convenient for constructing operation, and screw puts together on upper laminated plank, corrugated spring washer, cover board together, make whole, avoid
Corrugated spring washer screen resilience discharges and influences operation in assembling process, when the conformal pad in upper layer, the conformal pad of lower layer, bandage curing molding
Afterwards, removable screw makes corrugated spring washer be put aside elastic force by compression and forms expanding force, achievees the effect that promote overall stiffness；It is right
In annular reinforcing structure, closed-loop is formed since tied rope passes through the through hole that lower layer's stator bar and upper layer stator bar are formed,
Can pad conformal to the stator retaining ring, lower layer's stator bar, interlayer that successively laminate, upper layer stator bar, conformal pad, sectorial block,
Planar spring, reinforcing ring form constraint and fix, the through hole shape that tied rope is formed using lower layer's stator bar and upper layer stator bar
At binding closed-loop, so that construction can carry out subsequent job after stator winding assembles, tied rope is using dipping asphalt mixtures modified by epoxy resin
The glass filament bundle of rouge is wound, convenient for being oppressed deformed state since planar spring is in, in its screen resilience and tying up across through hole
Make under the constraint fixed function of rope 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 quilt
The effect of firm binding together, can also make reinforcing ring, upper layer stator bar, lower layer's stator bar, stator retaining ring tight
Close is fixed together, and forms the cyclic structure that the moment of inertia is several times as much as original structure, obtains itself overall stiffness of involute position
It is obvious to reinforce, 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；Conformal pad pad avoids producing between upper layer stator bar and sectorial block
Raw localized contact causes stress to concentrate；Reinforcing ring has annular groove, accommodates planar spring and sectorial block, avoids planar spring and sectorial block
Evolution；The reinforcement structure of radiation profiles and the combination of annular reinforcing structure form high rigidity of structure caged in stator end and add
Strong structure can effectively promote stator winding end overall stiffness, substantially change end elliptical vibration frequency, avoid solid
There is driving frequency range, guarantees 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, corrugated spring washer 7, 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, 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 lower surface of cover board 8 is contacted with corrugated spring washer 7, and screw 10 is by upper laminated plank
6, corrugated spring washer 7, cover board 8 are put together on together, and bandage 9 passes through lower layer's stator bar 11 and passes through with what upper layer stator bar 12 was formed
Through-hole constitutes closed-loop, 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 line
The structure that stick 12, the conformal pad 5 in upper layer, upper laminated plank 6, corrugated spring washer 7, cover board 8 form forms binding constraint, corrugated spring washer
7 are in confined state；Annular reinforcing structure 2 is by reinforcing ring 15, planar spring 16, sectorial block 17, conformal pad 18,19 structure of tied rope
At the structure 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 passes through the through hole that lower layer's stator bar 11 and upper layer stator bar 12 are formed and constitutes closed-loop,
To stator retaining ring 21, lower layer's stator bar 11, the conformal pad 14 of interlayer, upper layer stator bar 12, conformal pad 18, sectorial block 17, put down
The structure that flat spring (16), reinforcing ring 15 form forms binding constraint, and planar spring 16 is in and is oppressed deformed state, plate bullet
Spring 16 is placed between sectorial block 17 and 20 inner surface of annular groove of reinforcing ring 15, and conformal pad 18 is placed in sectorial block 17 and upper layer stator line
Between stick 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, corrugated spring washer 7, the formation of cover board 8
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 lower surface of cover board 8 is contacted with corrugated spring washer 7, is generated pressing force to corrugated spring washer 7, is adopted
Being combined with laminated plank 6 with the structure of cover board 8 can be convenient for construction and installation, and screw 10 is by upper laminated plank 6, corrugated spring washer 7, lid
Plate 8 is put together on together, makes whole, is avoided corrugated 7 screen resilience of spring washer release in assembling process and is influenced operation, when upper
After the conformal pad 5 of layer, the conformal pad 4 of lower layer, 9 curing molding of bandage, removable screw 10 makes corrugated spring washer 7 put aside bullet by compression
Power forms expanding force, achievees the effect that promote overall stiffness；Bandage 9 is the glass filament bundle for impregnating room temperature curing epoxy, Gu
It is in soft condition before changing, the operation of through hole can be fitted through, commensurate structure size is fitted closely with by binding structure,
The closed-loop with fastening strength is formed after solidification, corrugated spring washer 7 is laminated epoxy glass-cloth board material, and elasticity is preferable, by
Can be with deformation occurs and generates lasting elastic force to pressure, shape is the thin plate that wave state is presented, lower laminated plank 3, upper laminated plank
6, cover board 8 is also laminated epoxy glass-cloth board material, all has excellent insulation performance, not by end electromagnetic force influence, do not generate
The stable feature of electromagnetic consumable, performance, will not bring accident potential；The quantity for installing the reinforcement structure 1 of radiation profiles can root
Determine that the installation number the more according to required adjustment frequency data, stator end overall stiffness promotes effect and is more obvious, fixed after construction
Sub- end portion vibration frequency rising value is higher, selects suitable quantity that stator end vibration frequency after construction can be made to rise to qualification
Numberical range in, the installation direction of the reinforcement structure 1 of radiation profiles is the bus of its long axis Yu stator end frustum structure
Direction is parallel；
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 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 ripple 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
Pad (5), upper laminated plank (6), corrugated spring washer (7), cover board (8), bandage (9), screw (10) composition, the reinforcement knot of radiation profiles
Structure (1) is mounted on turbogenerator stator winding end portion involute position, and the generatrix direction along stator end frustum structure is in spoke
Shape distribution is penetrated, the conformal pad (4) of lower layer, upper laminated plank (6) and 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 stator bar (12), the upper surface of upper laminated plank (6) there are chamber (13), to accommodate ripple
The lower surface of shape spring washer (7), cover board (8) is contacted with corrugated spring washer (7), and screw (10) is by upper laminated plank (6), corrugated spring washer
(7), cover board (8) is fixed together conjunction, and bandage (9) passes through lower layer's stator bar (11) and upper layer stator bar (12) formation
Through hole constitute closed-loop, to lower laminated plank (3), the conformal pad (4) of lower layer, lower layer's stator bar (11), the conformal pad (14) of interlayer,
The structure shape that upper layer stator bar (12), the conformal pad (5) in upper layer, upper laminated plank (6), corrugated spring washer (7), cover board (8) form
It is constrained at binding, corrugated spring washer (7) 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) constitute, annular reinforcing structure (2) be mounted on stator of steam turbine generator around
Group end involute position, reinforcing ring (15) have annular groove (20), and built-in planar spring (16) and sectorial block (17), tied rope (19) are worn
Cross the through hole that lower layer's stator bar (11) and upper layer stator bar (12) are formed and constitute closed-loop, to stator retaining ring (21), under
Layer stator bar (11), the conformal pad (14) of interlayer, upper layer stator bar (12), conformal pad (18), sectorial block (17), planar spring
(16), the structure of reinforcing ring (15) composition forms binding constraint, and planar spring (16) is in and is oppressed deformed state, planar spring
(16) be placed between sectorial block (17) and annular groove (20) inner surface of reinforcing ring (15), conformal pad (18) be placed in sectorial block (17) with
Between upper layer stator bar (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811080223.8A CN109067051A (en) | 2018-09-17 | 2018-09-17 | A kind of combination ripple spring washer form stator end reinforcement structure |
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|---|---|---|---|
| CN201811080223.8A CN109067051A (en) | 2018-09-17 | 2018-09-17 | A kind of combination ripple spring washer form stator end reinforcement structure |
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| CN202957718U (en) * | 2012-11-23 | 2013-05-29 | 东方电气集团东方电机有限公司 | Stator core-penetrating screw insulating device of crossflow unit |
| CN106059161A (en) * | 2016-08-01 | 2016-10-26 | 中车永济电机有限公司 | Asynchronous traction motor stator structure with enhanced vibration resistance |
| 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 |
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Application publication date: 20181221 |