CN201656613U - Motor rotor - Google Patents
Motor rotor Download PDFInfo
- Publication number
- CN201656613U CN201656613U CN2010201908143U CN201020190814U CN201656613U CN 201656613 U CN201656613 U CN 201656613U CN 2010201908143 U CN2010201908143 U CN 2010201908143U CN 201020190814 U CN201020190814 U CN 201020190814U CN 201656613 U CN201656613 U CN 201656613U
- Authority
- CN
- China
- Prior art keywords
- bundling belt
- edge
- rotor
- bundling
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims description 38
- 230000004323 axial length Effects 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 description 10
- 239000007779 soft material Substances 0.000 description 5
- 239000003365 glass fiber Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- NOQGZXFMHARMLW-UHFFFAOYSA-N Daminozide Chemical group CN(C)NC(=O)CCC(O)=O NOQGZXFMHARMLW-UHFFFAOYSA-N 0.000 description 1
- 229920000914 Metallic fiber Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model discloses a device among electric motor rotor, wherein electric motor rotor is rotatory and including rotor block and coil at least around its axis of rotation, and this coil is outstanding to the coil end. The binding band is fitted on the protruding beams outside the outer surfaces of the rotor coil ends, and a first edge of the binding band faces the rotor body and a second edge of the binding band faces away from the rotor body in the axial direction of the rotor. The tying band is tapered on an inner surface. At least two binding bands are fitted on the projecting beam one after another in the axial direction. The first edge of the first strap is closer to the rotor body than the first edge of the second strap. A gap for cooling air flow is located between the second edge of the first strap and the first edge of the second strap.
Description
Technical field
The utility model relates to motor, relates more specifically to the device in the rotor.
Background technology
In motor, winding often is arranged in the groove that is arranged in stator inner surface and rotor outer surface.Winding is formed by the coil of the groove that is arranged in stator or rotor in the groove.Coil is made up of a plurality of conductor layers.Coil sides links together by the end winding that is positioned at the groove end.
The end winding of rotor needs reinforcement to resist the radial load that produces when rotor rotates.This reinforcement normally forms by glass fibre, aramid fibre or carbon fiber tape or steel wire are wound into end winding.When twining, rotor is around its rotation rotation, and around fiber is wound into coil end by heating station and guide roller from the feed coil.The support cylinder body is installed in the inside of end winding, thereby produces the pretension that twines when strengthening tying up.Edge strip (edge tape) is being twined preceding installation, and the band of Chan Raoing can not scatter like this.Edge strip often forms by the hard ring of glass fibre is carried out resinification.Open in patent US 6,029,338 by the reinforcement of twining.
Reinforcement by winding is time-consuming.Melting in strengthen handling, heating or zinc-plated when also expending worker.Because complexity also has variation sensitiveness qualitatively by the reinforcement of twining.
The durability that the rotor coil end is strengthened is subjected to true test under the big situation of rotor speed, rotor coil end mass or diameter.For example, the rotational velocity range of wind-driven generator requirement is big.Gustiness may increase fast, is applied to the power of tying up in this case and rises to three times fast.When load broke away from electrical network, the rotary speed of rotor can be increased to 1.75 to 2 times of rated speed fast.
Utilizing the persistent erection that adds that twines, bad to high-speed durability.The winding material attribute is this Central Plains therefore.
CN 200610142225.6 discloses and has utilized the reinforcement of real bundling belt to end winding.
Disturb cooling blast to arrive end winding easily by the reinforcement of twining or real bundling belt carries out, perhaps under the worst situation, can stop cooling blast to arrive end winding fully.This causes the end winding temperature below reinforcement take-up strap or real bundling belt to rise.
Existence is to a kind of demand that allows the durable end coil reinforcement of effective cooling coil end.
The utility model content
The purpose of this utility model is to create a kind of device that is used to strengthen the end winding of rotor, and it allows effective cooling coil end.
In order to realize this point, the utility model characterizes by characteristic specified in the characteristic of the present utility model.Other preferred embodiments more of the present utility model also have other features of appointment in the utility model.
In device of the present utility model, rotor is around its rotation rotation and comprise rotor block and coil at least, and this coil protrudes end winding.Bundling belt is assemblied on the outstanding beam of outer surface outside of rotor coil end, and on the axis direction of rotor, first edge of bundling belt towards second edge of rotor block and bundling belt away from rotor block.Bundling belt is taper on inner surface.At least two bundling belts are being assemblied on the axis direction on the outstanding beam one by one.More close this rotor block is compared with first edge of second bundling belt in first edge of first bundling belt.The gap that is used for cooling blast is between first edge of second edge of first bundling belt and second bundling belt.
Bundling belt is a toroidal, and is to be installed on the outer surface of end winding by making it to slide.In rotor, bundling belt radially is positioned on the end winding.Bundling belt transmits radial load, for example, and the centrifugal force that rotor produces when rotating by outstanding beam.
Soft material is positioned under the outstanding beam, and this has promoted bundling belt easily is installed on the end winding of rotor.Bundling belt is stiff, and according to the precision size manufacturing.Bundling belt is taper on inner surface.End winding is not taper at first.When bundling belt slided on outstanding beam, the soft material under the outstanding beam compressed end winding.Soft material allows freely to select relatively the axial location of bundling belt on end winding, because it allows bundling belt easily to move along axis direction.
In an embodiment of the present utility model, the internal diameter at first edge of bundling belt is unequal.First bundling belt at the internal diameter at first edge greater than the internal diameter of second bundling belt at first edge.This size is determined to allow accurately to locate bundling belt along axis direction.
In another embodiment of the present utility model, the axial length of bundling belt is unequal.
In an embodiment more of the present utility model, the gap that is used for cooling blast is in the outermost point of rotor coil end with along between nearest second edge of axis direction.Gap width is along 20% to 85% of the nearest bundling belt of axis direction.
In another embodiment of the present utility model, the gap that is used for cooling blast is between first edge of the rotor block and first bundling belt.Gap width be first bundling belt axial length 20% to 85%.
In another embodiment of the present utility model, the thickness of bundling belt increases to substantial constant ground, second edge from first edge of bundling belt.So the maximum ga(u)ge of bundling belt is positioned at the narrowest part, and bundling belt thereby be the most firm in most important end.
In another embodiment of the present utility model, three bundling belts are assemblied on the outstanding beam.
In another embodiment of the present utility model, outstanding beam is the elongated slot wedge.Slot wedge is outstanding from rotor block along the insulated part of end winding at least, and making insulate not impaired during installation and bundle is held in place.Slot wedge remains in the groove rightly along whole rotor length extension and they.
During binding was installed, slot wedge was as slidingsurface and protect the coil overhang insulation.Slot wedge can be made by glass fibre, for example, has the glass fibre of the durability that needs, enough slidingsurface quality and required heat resistance.If binding is to be formed by electric conducting material, then slot wedge also can be used as insulation component.
The preferred taper ratio of bundling belt is 1: 40 to 1: 50.
Bundling belt is a self-tightening type, that is, binding does not need fix in position independently, although this structure is not repelled the use axial restraint.Bundling belt is assemblied on the outstanding beam by tension force.Frictional force and conical in shape are held in place bundling belt.During the dipping of for example vacuum pressure impregnation, some resins will enter between bundling belt and the outstanding beam and be used as jelly.
Scheme of the present utility model allows bundling belt to be made of a variety of materials according to application.
End winding stiffening device of the present utility model promotes end winding is effectively cooled off, because end winding is not to be twined fully by single bundling belt or take-up strap.Has the drift that not tied band covers on the end winding.For high power motor, effectively cooling is a particular importance.Bundling belt separately is supported to outstanding beam, and not directly against on the end winding.Cooling air can flow through the air duct that is formed by two outstanding beams, binding and end windings below bundling belt.When bundling belt rotated, outstanding beam was as making air movement alar part more efficiently.
Can be by bundling belt be made the cooling that pore is strengthened end winding.Distinguish prefabricated to the bundling belt of making by for example metallic fiber or carbon fiber.This permission was punched to bundling belt before being installed to bundling belt on the end winding.Bundling belt can be used the means of different inspection before installing, for example utilize ultrasonic examination, thereby improved the q﹠r of wind-driven generator.
Device of the present utility model is very suitable for for example wind-driven generator.Strain is carried on the rotor under the ease situation flying, and to concentrate on epitrochanterian damage under overspeed situation dangerous and can reduce significantly according to scheme of the present utility model
Description of drawings
Below, by the reference accompanying drawing by specific embodiment, more detailed description the utility model, wherein
Fig. 1 illustrates the rotor with two bundling belts;
Fig. 2 illustrates the cross section of another rotor with two bundling belts;
Fig. 3 illustrates the rotor with three bundling belts;
Fig. 4 a)-Fig. 4 c) cross section of three bundling belts shown in Figure 3 is shown.
Embodiment
Fig. 1 and Fig. 2 illustrate the embodiment in order to the device of the end winding that utilizes two bundling belts reinforcement rotors.Motor is for example wound rotor generator.Rotor 1 rotates around its rotation r on axle 12.Rotor 1 comprises rotor block 2 and coil 3 at least.Coil 3 is outstanding in the end of rotor 1 to be end winding 4.Two bundling belt 5a-5d are assemblied on the outstanding beam 6 one by one along axis direction a.Outstanding beam 6 is 2 outstanding along axis direction a from rotor block basically.Being positioned under the outstanding beam 6 is soft material 11, and its promotion easily is installed in bundling belt on the end winding of rotor.Bundling belt 5a-5d is on the outstanding beam 6 by outer ring surface 7 outsides that its slip are installed on formed by rotor coil end 4.Outstanding beam 6 is as slidingsurface.Bundling belt 5a-5d along the outer surface smoother of outstanding beam 6 move, keep in touch this outer surface simultaneously.
In the axis direction a of rotor 5, the first edge 8a, the 8b of bundling belt 5a, 5b towards the second edge 9a, the 9b of rotor block 2 and bundling belt 5a, 5b away from rotor block 2.
The first edge 8a, the 8c of the first bundling belt 5a, 5c compares more close rotor block 2 with the first edge 8b, the 8d of the second bundling belt 5b, 5d.The gap 16a that is used for cooling blast is between the first edge 8b, the 8d of the second edge 9a, the 9c of the first bundling belt 5a, 5c and the second bundling belt 5b, 5d.
The inner diameter d of the first edge 8e-8g of bundling belt
1, d
2, d
3Unequal, as shown in Figure 4.The first bundling belt 5e is in the inner diameter d of the first edge 8e
1Greater than the inner diameter d of the second bundling belt 5f at the first edge 8f
2In all illustrated embodiments, this size is determined to allow accurately to locate bundling belt 5a-5g along axis direction a.
In device illustrated in figures 1 and 2, the axial length w of bundling belt 5a-5d
1, w
2, w
4, w
5Unequal.Fig. 3 and Fig. 4 a)-Fig. 4 c) in, the axial length w of bundling belt 5e-5g
3Basically equate.
In the embodiment shown in fig. 1, be used for the gap 16b of cooling blast in the outermost point 15 of rotor coil end with along between the nearest second edge 9b of axis direction.Gap width L
4Be the axial length w that comprises the bundling belt 5b of the nearest second edge 9b
420% to 85%.The advantage of device shown in Figure 1 is cooling coil end 4 effectively.
In all embodiments, the first bundling belt 5a, 5c, 5e are no more than rotor block 2.The gap 16c that is used for cooling blast is between the first edge 8a of rotor block 2 and the first bundling belt 5a, 5c, 5e, 8c, 8e.Gap width L
3, L
5Be the axial length w of the first bundling belt 5a, 5c, 5e
1, w
3, w
520% to 85%.
In all embodiments, the thickness s of bundling belt increases to 9a-9e substantial constant ground, second edge from the first edge 8a-8e of bundling belt.So the maximum ga(u)ge s of bundling belt is positioned at the narrowest part, and bundling belt thereby be the most firm in most important end.
Fig. 3 and Fig. 4 illustrate three bundling belt 5e-5g and are assemblied in the embodiment that gives prominence on the beam 6.Has unsupported width L between the rotor block 2 and the first bundling belt 5e
3, have unsupported width L between the first bundling belt 5e and the second bundling belt 5f
2, and have unsupported width L between the second bundling belt 5f and the 3rd bundling belt 5g
1
The diameter d of the inner surface 10 of bundling belt 5
11, d
22, d
33Reduce to second edge, 9 substantial constant ground from first edge 8 of bundling belt 5.
In the drawings, outstanding beam is the slot wedge of additional length, and it is 2 lasting extensions along axis direction from rotor block.Slot wedge is arranged in the radially R outside of groove, and when rotor 1 rotation, slot wedge is held in place coil 3.
Bundling belt 5 is pushed slot wedge and end winding 4, makes them towards axle 12 inside slight bending.Centering (centralization) is to use centering ring 13 to carry out from the inside of rotor coil end 4.Centering ring 13 concentrates in together end winding 4 and axle 12, and end winding 4 is compressed centering ring 13.Soft member 14 is assemblied between centering ring 13 and the end winding 4, to prevent to damage the coil overhang insulation between bundling belt 5 installation periods.
It is real that bundling belt among the figure is plotted as.Yet bundling belt can comprise one or more pores.
Although above describe the motor as the generator operation, the utility model can be used for motor similarly.The utility model can also act in different motor types and the rotor solution, for example, and direct current machine and wound rotor.
Hereinbefore, by specific embodiment the utility model is described.Yet this description should not be considered to limit the protection range of this patent; Embodiment of the present utility model can change in the scope of claims subsequently.。
Parts inventory: 1 rotor; 2 rotor blocks; 3 coils; 4 end turns; The 5a-5g bundling belt; 6 outstanding beams; 7 outer surfaces; 8a-8g first edge; 9a-9g second edge; 10 inner surfaces; 11 soft materials; 12 axles; 13 centering rings; 14 soft members; The outermost point of 15 end turns; The 16a-16c gap; The a axis direction; d1、d
2、d
3、d
11、d
22、d
33Diameter; L1、L
2、L
3、L
4、L
5Length; The R radial direction; The r rotation; S thickness; w1、w
2、w
3Length.
Claims (10)
1. the device in the rotor (1), this rotor is around its rotation (r) rotation and comprise rotor block (2) and coil (3) at least, this coil is outstanding to be end winding (4), and bundling belt (5a-5g) is assemblied on the outside outstanding beam (6) of the outer surface (7) of this rotor coil end (4), and on the axis direction (a) of this rotor (1), first edge (8a-8g) of this bundling belt (5a-5g) towards second edge (9a-9g) of this rotor block (2) and this bundling belt (5a-5g) away from this rotor block (2), and this bundling belt (5) is taper on inner surface (10), it is characterized in that, at least two bundling belts (5a-5g) are assemblied on this outstanding beam (6) one by one along this axis direction (a), and first edge (8a-8g) of first bundling belt (5a-5g) compares more close this rotor block (2) with first edge (8a-8g) of second bundling belt (5a-5g), and the gap (16a) that is used for cooling blast is positioned between first edge (8a-8g) of second edge (9a-9g) of this first bundling belt (5a-5g) and this second bundling belt (5a-5g).
2. according to the device of claim 1, it is characterized in that the internal diameter (d at first edge (8a-8g) of this bundling belt (5a-5g)
1, d
2, d
3) unequal.
3. according to the device of claim 1, it is characterized in that the axial length (w of this bundling belt (5a-5g)
1, w
2, w
3) unequal.
4. according to the device of claim 1, it is characterized in that the gap (16b) that is used for cooling blast is positioned at the outermost point (15) of this end winding (4) and along between nearest second edge (9a-9g) of this axis direction (a), the width (L of this gap (16b)
4) be comprise this nearest second edge (9a-9g) this bundling belt (5a-5g) axial length 20% to 85%.
5. according to the device of claim 1, it is characterized in that the gap (16c) that is used for cooling blast is positioned between first edge (8a-8g) of this rotor block (2) and this first bundling belt (5a-5g) this gap width (L
3, L
5) be this first bundling belt axial length 20% to 85%.
6. according to the device of claim 1, it is characterized in that the thickness (s) of this bundling belt (5a-5g), increases to second edge (9a-9g) consistently from first edge (8a-8g) of this bundling belt (5a-5g).
7. according to the device of claim 1, it is characterized in that three bundling belts (5a-5g) are assemblied on this outstanding beam (6).
8. according to the device of claim 1, it is characterized in that the taper ratio of this bundling belt (9) is 1: 40 to 1: 50.
9. according to the device of claim 1, it is characterized in that this outstanding beam (6) is a slot wedge.
10. according to the device of claim 1, it is characterized in that this motor is wound rotor generator or wound rotor motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20105413 | 2010-04-19 | ||
| FI20105413A FI20105413A0 (en) | 2010-04-19 | 2010-04-19 | Electric machine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656613U true CN201656613U (en) | 2010-11-24 |
Family
ID=42133255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201908143U Expired - Lifetime CN201656613U (en) | 2010-04-19 | 2010-05-06 | Motor rotor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201656613U (en) |
| FI (1) | FI20105413A0 (en) |
-
2010
- 2010-04-19 FI FI20105413A patent/FI20105413A0/en unknown
- 2010-05-06 CN CN2010201908143U patent/CN201656613U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FI20105413A0 (en) | 2010-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ABB T + D TECHNOLOGY LTD. Free format text: FORMER OWNER: ABB AZIPOD OY Effective date: 20131227 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131227 Address after: Zurich Patentee after: ABB T & D Technology Ltd. Address before: Helsinki Patentee before: ABB Azipod Oy |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20180525 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Zurich Patentee before: ABB T & D Technology Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |