CN208581147U - A kind of portable doubly-fed wind turbine stretches end earthing or grounding means - Google Patents
A kind of portable doubly-fed wind turbine stretches end earthing or grounding means Download PDFInfo
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- CN208581147U CN208581147U CN201821227593.5U CN201821227593U CN208581147U CN 208581147 U CN208581147 U CN 208581147U CN 201821227593 U CN201821227593 U CN 201821227593U CN 208581147 U CN208581147 U CN 208581147U
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- grounding
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- supporting plate
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Abstract
A kind of portable doubly-fed wind turbine stretches end earthing or grounding means, includes mainly grounding assembly, the grounding assembly mainly includes cushion block, shield, supporting plate and grounding carbon brush；The shield section is L shape, and shield includes horizontal part and vertical component effect, and the vertical component effect is equipped with through-hole, and the supporting plate is strip, and one end is equipped with through-hole, and the other end is connect with grounding carbon brush, and the cushion block is that several nuts are composed；The shield, supporting plate and cushion block sequentially pass through stay bolt, and the stay bolt passes through the bolt hole on bearing block, shield, supporting plate and cushion block is fixed on bearing block, present apparatus scientific structure design, and flexibility ratio is high, easy for installation.
Description
Technical field
The utility model relates to doubly-fed wind turbine field of accessories more particularly to a kind of portable doubly-fed wind turbines
Stretch end earthing or grounding means.
Background technique
Since double-fed wind power generator rotor excitation is powered using converter plant, so can be in wind-driven generator connecting terminal
Place generates high frequency common mode voltage, then generates common mode current.The common mode current can be generated by transformer action across power generation
The voltage of machine bearing, when the insulating capacity for having exceeded bearing lubricant across voltage of generation, bearing will pass through electric current (i.e.
Our usually said shaft currents), cause the damage of bearing.High frequency shaft current mainly includes shaft earth current, capacitive character
Discharge current, loop current effectively eliminate shaft current to improve wind-driven generator reliability of operation, need to send out in wind-force
Motor stretches end and increases earthing or grounding means.
Chinese patent CN206379486U discloses a kind of earthing or grounding means for wind-driven generator, including two carbon brush,
External ground line, for the shaft current of generator shaft to be accessed the earth via ground line；Two brush boxs, inside, which is equipped with, accommodates carbon
The hollow cavity of brush, carbon brush are clamped by the hollow cavity of pressure spring and brush box；Ground loop is in contact with one end of carbon brush；Support
Frame is bolted to connection with brush box, is contacted for fixing brush box and adjusting carbon brush with the effective of ground loop
Area；It is affixed by bolt with the side of brush box close to switch, insulation is equipped between close switch and brush box
Plate.Two carbon brush in the patent are mounted on a support frame, and structure is complex, and flexibility ratio is inadequate, and installation is complex,
Furthermore doubly-fed wind turbine is generally in 70 meters or more of high aerial work, so the time of operation in-site installation grounding carbon brush
And convenience is particularly important.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies of the prior art and provide a kind of scientific structure design,
Flexibility ratio is high, and a kind of portable doubly-fed wind turbine easy for installation stretches end earthing or grounding means.
To realize the utility model the following technical schemes are provided: a kind of portable doubly-fed wind turbine stretches end ground connection dress
It sets, includes mainly grounding assembly, the grounding assembly mainly includes cushion block, shield, supporting plate and grounding carbon brush；The shield
Section is L shape, and shield includes horizontal part and vertical component effect, and the vertical component effect is equipped with through-hole, and the supporting plate is strip, one end
Equipped with through-hole, the other end is connect with grounding carbon brush, and the cushion block is that several nuts are composed；The shield, supporting plate and
Cushion block sequentially passes through stay bolt, and the stay bolt passes through the bolt hole on bearing block, shield, supporting plate and cushion block are fixed on axis
It holds on seat.
Preferably, the grounding carbon brush and shaft contacts.
Preferably, the grounding assembly at least there are two, the grounding assembly is mounted on two non-conterminous bolts hole
On.
Preferably, the horizontal part of the shield covers end and the grounding carbon brush of stay bolt.
Preferably, being additionally provided with washer between the shield and stay bolt.
The usefulness of the utility model: first, operation scene need to only borrow bearing without carrying out components boring work
The bolt hole of seat, original lag bolt is substituted with stay bolt, this earthing or grounding means can be mounted on bearing block；Second, cushion block
Using the combination of several nuts, can be needed to select nut number at a distance from bearing block according to grounding carbon brush；Third, Ke Yigen
The number that unrestricted choice grounding assembly is needed according to alternator shaft, due to only one carbon brush in each grounding assembly, two
The installation site of a or multiple grounding assemblies is more flexible.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
In figure: 1 being cushion block, 2 be shield, 2.1 be horizontal part, 2.2 be vertical component effect, 3 be supporting plate, 4 be grounding carbon brush, 5
It is stay bolt, 6 be bearing block, 7 is shaft.
Specific embodiment
A kind of portable doubly-fed wind turbine stretches end earthing or grounding means, mainly includes grounding assembly, the grounding assembly master
It to include cushion block 1, shield 2, supporting plate 3 and grounding carbon brush 4；2 section of shield is L shape, and shield 2 includes horizontal part
2.1 and vertical component effect 2.2, the vertical component effect 2.2 is equipped with through-hole, and the supporting plate 3 is strip, and one end is equipped with through-hole, the other end with
Grounding carbon brush 4 connects, and the cushion block is that several nuts are composed；The shield 2, supporting plate 3 and cushion block 1 sequentially pass through length
Bolt 5, the stay bolt 5 pass through the bolt hole on bearing block 6, shield 2, supporting plate 3 and cushion block 1 are fixed on bearing block 6,
The grounding carbon brush 4 is contacted with shaft 7, the grounding assembly at least there are two, the grounding assembly be mounted on two it is non-conterminous
Bolt hole on, the horizontal part 2.1 of the shield 2 covers end and the grounding carbon brush 4 of stay bolt 5, the shield 2 with it is long
Washer is additionally provided between bolt 6.
Present apparatus work and installation principle determine grounding carbon brush 4 at a distance from bearing block 6, so that it is determined that needing as needed
Want how many a nuts to form cushion block 1, grounding carbon brush 4 be mounted on to one end of supporting plate 3, by shield 2, supporting plate 3 and cushion block 1 according to
Secondary stay bolt 5 passes through the bolt hole of bearing block 6 after stay bolt 5, and shield 2, supporting plate 3 and cushion block 1 and bearing block 6 is tight
It fastens together, without carrying out components boring work in installation process；In addition, can flexibly use according to actual needs
Multiple grounding assemblies only need to change original lag bolt into stay bolt 5 installation can be completed, and will not influence on bearing block 6 other
Lag bolt, the structure of entire bearing block 6 will not be influenced.
The utility model is not limited to a kind of portable doubly-fed wind turbine involved in above-mentioned specific embodiment
End earthing or grounding means is stretched, those skilled in the art can also make a variety of variations accordingly, but any be equal with the utility model
Or similar variation should all be covered in the range of the utility model claims.
Claims (5)
1. a kind of portable doubly-fed wind turbine stretches end earthing or grounding means, it is characterised in that: it mainly include grounding assembly, it is described to connect
Ground component mainly includes cushion block, shield, supporting plate and grounding carbon brush；The shield section is L shape, and shield includes level
Portion and vertical component effect, the vertical component effect are equipped with through-hole, and the supporting plate is strip, and one end is equipped with through-hole, the other end and grounding carbon brush
Connection, the cushion block are that several nuts are composed；The shield, supporting plate and cushion block sequentially pass through stay bolt, the length
Bolt passes through the bolt hole on bearing block, and shield, supporting plate and cushion block are fixed on bearing block.
2. a kind of portable doubly-fed wind turbine according to claim 1 stretches end earthing or grounding means, it is characterised in that: described
Grounding carbon brush is directly contacted with shaft.
3. a kind of portable doubly-fed wind turbine according to claim 1 stretches end earthing or grounding means, it is characterised in that: described
Grounding assembly at least there are two, the grounding assembly is mounted on two non-conterminous bolts hole.
4. a kind of portable doubly-fed wind turbine according to claim 1 stretches end earthing or grounding means, it is characterised in that: described
The horizontal part of shield covers end and the grounding carbon brush of stay bolt.
5. a kind of portable doubly-fed wind turbine according to claim 1 stretches end earthing or grounding means, it is characterised in that: described
Washer is additionally provided between shield and stay bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821227593.5U CN208581147U (en) | 2018-08-01 | 2018-08-01 | A kind of portable doubly-fed wind turbine stretches end earthing or grounding means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821227593.5U CN208581147U (en) | 2018-08-01 | 2018-08-01 | A kind of portable doubly-fed wind turbine stretches end earthing or grounding means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208581147U true CN208581147U (en) | 2019-03-05 |
Family
ID=65511645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821227593.5U Active CN208581147U (en) | 2018-08-01 | 2018-08-01 | A kind of portable doubly-fed wind turbine stretches end earthing or grounding means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208581147U (en) |
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2018
- 2018-08-01 CN CN201821227593.5U patent/CN208581147U/en active Active
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