CN101847897B - Double-fed wind power generator rotor - Google Patents
Double-fed wind power generator rotor Download PDFInfo
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- CN101847897B CN101847897B CN2009101753500A CN200910175350A CN101847897B CN 101847897 B CN101847897 B CN 101847897B CN 2009101753500 A CN2009101753500 A CN 2009101753500A CN 200910175350 A CN200910175350 A CN 200910175350A CN 101847897 B CN101847897 B CN 101847897B
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- hole
- rotor
- axis hole
- cable
- axial blind
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Abstract
The invention relates to a generator rotor, in particular to a double-fed wind power generator rotor, which solves the problem that a three-phase winding lead-out cable of a traditional double-fed wind power generator rotor is easily worn so as to cause a ground fault. The double-fed wind power generator rotor comprises a rotor shaft and a rotor three-phase winding; a shaft hole is arranged at the end part of the rotor shaft and is composed of a rotor axial blind hole and an inclined hole communicated with the rotor axial blind hole; a shaft hole corner is formed at the intersection of the inclined hole and the rotor axial blind hole; a shaft hole jacket made from an insulating material is sleeved in the rotor axial blind hole; three waist round holes or round holes corresponding to the position of the inclined hole are uniformly distributed on the circle of the shaft hole jacket; the three-phase winding lead-out cable is lead out from the shaft hole at the end part of the rotor shaft via the inclined hole, the waist round hole or round hole on the shaft hole jacket and the shaft hole jacket through the cable; and the position of the shaft hole jacket in the rotor axial blind hole ensures that the waist round hole or round hole thereon is located at one side of the bottom of the blind hole at the corner of the shaft hole. The invention is also applicable to a wound rotor asynchronous generator and a wound rotor synchronous generator.
Description
Technical field
The present invention relates to generator amature, be specially double-fed wind power generator rotor.
Background technology
Double-fed wind power generator rotor is the Wound-rotor type structure; Three phase winding lead-out wires are generally drawn with slip ring from the axis hole of armature spindle end through cable and are connected, axis hole by the rotor axial blind hole with open on the armature spindle face of cylinder and the inclined hole that communicates with the rotor axial blind hole constitutes.The threephase cable lead-out wire is the vitals that bidirectional energy flows between frequency converter and rotor, and therefore, its reliability design in axis hole is directly connected to the reliability service of wind turbine generator.
The fixed structure of cable in axis hole is as shown in Figure 1 usually; Cable is gone into the inclined hole section and is with cable cover(ing); Because the threephase cable lead-out wire is bearing the thermal stress that alternating current brings, the centrifugal force that high rotating speed produces, therefore; Cable has mobile in axis hole unavoidably; Motor cable will occur and in (being that inclined hole and rotor axial blind hole intersect the part intersection rib that the intersection rib that forms the is positioned at the blind hole outlet side) wearing and tearing of axis hole corner earth fault take place, even occur wearing and tearing and earth fault taking place together with cable cover(ing), cable after long operation in one period.
Summary of the invention
The problem of earth fault takes place in the present invention for the three phase winding outgoing cable lines that solve existing double-fed wind power generator rotor are easy to wear; A kind of double-fed wind power generator rotor of architecture advances is provided, to overcome the problem that existing double-fed wind power generator rotor exists.
The present invention adopts following technical scheme to realize: double-fed wind power generator rotor; Comprise armature spindle, rotor three-phase winding; The armature spindle end has axis hole; Axis hole by the rotor axial blind hole with open on the armature spindle face of cylinder and the inclined hole that communicates with the rotor axial blind hole constitutes, inclined hole and rotor axial blind hole intersection formation axis hole corner are with the axis hole sheath of being processed by insulating material in the rotor axial blind hole; Axis hole sheath circumference is offered three that be uniformly distributed with and corresponding with the inclined hole position oval hole or circular holes; Three phase winding lead-out wires are drawn from the axis hole of armature spindle end through oval hole or circular hole, the axis hole sheath of cable on inclined hole, axis hole sheath, and the position of axis hole sheath in the rotor axial blind hole should guarantee blind hole bottom one side that oval hole or the circular hole on it is positioned at axis hole corner; Make when cable passes oval hole or circular hole, cable contact with the axis hole sheath (promptly not with shaft hole inner wall particularly axis hole corner contact).Can the turn round reach of cable in axis hole just can be avoided the wearing and tearing of axis hole corner to cable like this, avoid the generation of earth fault.Because the axis hole sheath is that insulating material is processed,, can therefore not cause earth fault even between cable and the axis hole sheath wearing and tearing are arranged yet.
Double-fed wind power generator rotor of the present invention can be avoided the generation of outgoing cable line wearing and tearing earth fault effectively through in the axis hole of armature spindle end, setting up the axis hole sheath and confirming the correct position of axis hole sheath in axis hole (rotor axial blind hole).Its reasonable in design, novelty, ingenious, effect is remarkable.Double-fed wind power generator rotor structure of the present invention also can be used for Wound-rotor asynchronous generator and synchronous generator.
Description of drawings
Fig. 1 is existing double-fed wind power generator rotor partial structurtes sketch map;
Fig. 2 is a double-fed wind power generator rotor partial structurtes sketch map of the present invention;
Fig. 3 is the structural representation of axis hole sheath;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is that the A of Fig. 3 is to oblique view;
Among the figure: 1-axis hole, 2-cable, 3-cable cover(ing), 4-armature spindle, 5-axis hole sheath, 6-axis hole corner.
Embodiment
Double-fed wind power generator rotor; Comprise armature spindle 4, rotor three-phase winding; Armature spindle 4 ends have axis hole 1; Axis hole 1 by the rotor axial blind hole with open on the armature spindle face of cylinder and the inclined hole that communicates with the rotor axial blind hole constitutes, inclined hole and rotor axial blind hole intersection formation axis hole corner 6 are with the axis hole sheath of being processed by insulating material 5 in the rotor axial blind hole; Axis hole sheath 5 circumference are offered three that be uniformly distributed with and corresponding with the inclined hole position oval hole or circular holes; Three phase winding lead-out wires are drawn from the axis hole of armature spindle end through oval hole or circular hole, the axis hole sheath 5 of cable 2 on inclined hole, axis hole sheath, and the position of axis hole sheath 5 in the rotor axial blind hole should guarantee blind hole bottom one side that oval hole or the circular hole on it is positioned at axis hole corner 6; Make when cable 2 passes oval hole or circular hole, cable 2 contact with axis hole sheath 5 (promptly not with shaft hole inner wall particularly axis hole corner contact).During practical implementation; There are following two kinds of situation the position of confirming the axis hole sheath: the one, and the diameter of the width in oval hole (being the diameter of both sides, oval hole semicircle), length or circular hole is more than or equal to the diameter of inclined hole; Need this moment the center line of oval hole or circular hole is moved to the blind hole bottom direction; Make oval hole or circular hole be positioned at blind hole bottom one side of axis hole corner 6, make that cable 2 contacts with axis hole sheath 5 when cable 2 passes oval hole or circular hole; The 2nd, the diameter of the width in oval hole, length or circular hole is less than the diameter of inclined hole; At this moment, make the center line of center line and inclined hole of oval hole or circular hole overlapping, can guarantee that oval hole or circular hole are positioned at blind hole bottom one side of axis hole corner 6; Make when cable 2 passes oval hole or circular hole; Cable 2 contacts with axis hole sheath 5, perhaps to be on the safe side, the center line summary of oval hole or circular hole is moved to the blind hole bottom direction.During practical implementation, as existing product, cable 2 is gone into the inclined hole section and also is with cable cover(ing) 3.
Claims (1)
1. double-fed wind power generator rotor; Comprise armature spindle (4), rotor three-phase winding; Armature spindle (4) end has axis hole (1); Axis hole (1) by the rotor axial blind hole with open on the armature spindle face of cylinder and the inclined hole that communicates with the rotor axial blind hole constitutes, inclined hole and rotor axial blind hole intersection formation axis hole corner (6) is characterized by: in the rotor axial blind hole, be with the axis hole sheath of being processed by insulating material (5); Axis hole sheath (5) circumference is offered three that be uniformly distributed with and corresponding with inclined hole position circular holes; Three phase winding lead-out wires are drawn from the axis hole of armature spindle end through circular hole, the axis hole sheath (5) of cable (2) on inclined hole, axis hole sheath, and the position of axis hole sheath (5) in the rotor axial blind hole should guarantee that the circular hole on it is positioned at blind hole bottom one side of axis hole corner (6); Make that cable (2) contacts with axis hole sheath (5) when cable (2) when passing circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101753500A CN101847897B (en) | 2009-12-08 | 2009-12-08 | Double-fed wind power generator rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101753500A CN101847897B (en) | 2009-12-08 | 2009-12-08 | Double-fed wind power generator rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101847897A CN101847897A (en) | 2010-09-29 |
| CN101847897B true CN101847897B (en) | 2012-02-08 |
Family
ID=42772395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101753500A Expired - Fee Related CN101847897B (en) | 2009-12-08 | 2009-12-08 | Double-fed wind power generator rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101847897B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697053A (en) * | 2013-12-12 | 2014-04-02 | 大连天元电机股份有限公司 | Coil-out inclined hole of 5MW doubly-fed wind generator rotor shaft |
-
2009
- 2009-12-08 CN CN2009101753500A patent/CN101847897B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101847897A (en) | 2010-09-29 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20171208 |