CN209170154U - A kind of high-pressure diesel generating set that can eliminate shaft current - Google Patents
A kind of high-pressure diesel generating set that can eliminate shaft current Download PDFInfo
- Publication number
- CN209170154U CN209170154U CN201821786879.7U CN201821786879U CN209170154U CN 209170154 U CN209170154 U CN 209170154U CN 201821786879 U CN201821786879 U CN 201821786879U CN 209170154 U CN209170154 U CN 209170154U
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- shaft
- generator
- copper brush
- shaft current
- rotor shaft
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Abstract
The utility model discloses the high-pressure diesel generating sets that one kind can eliminate shaft current, including generator rotor shaft, copper brush, bracket and earth cable, the copper brush contacts the generator rotor shaft, the copper brush and the generator rotor shaft are fixed on the bracket by screw rod, the exposure of the copper brush and the generator rotor shaft is controlled by the upper adjusting nut being set on the screw rod and lower adjusting nut, is connected between the copper brush and generator casing with earth lead.The utility model passes through copper brush electric installation on the basis of original high-voltage generator, shaft current in high-voltage generator shaft is imported into the earth, effectively eliminate the shaft current of high-voltage generator shaft, shaft current is avoided to cause the harm of spot corrosion to generator bearing and bearing shell, its structure is simple, effect is obvious, facilitates later maintenance；The utility model has the advantages that structure is simple, performance is stable and service life is longer.
Description
Technical field
The utility model relates to generating set technical fields, more particularly to a kind of high-pressure diesel hair that can eliminate shaft current
Motor group.
Background technique
Since high-voltage generator causes that magnetic circuit is unbalanced and air gap is asymmetric due to manufacture and mounting process etc., high pressure bavin
Oily generating set when operating normally armature spindle in circumgyration incision imbalance magnetic flux or there is axial leakage field and at armature spindle both ends
Generate shaft voltage.
Under normal circumstances, there is the presence of lubricating oil film between shaft and bearing, bearing shell, play the role of lubrication.Work as shaft voltage
When reaching certain numerical value, then shaft voltage is enough to puncture the oil film between axis and bearing and discharges；Shaft current will be from shaft, oil
The external circuits such as film, bearing block or bearing shell and basis pass through, and since the closed circuit impedance is minimum, therefore current density is very big, special
When axis and bearing shell form the moment of metallic contact, shaft current is up to upper kilo-ampere, by third-degree burn bearing, bearing shell, to bearing,
Bearing shell generates galvano-cautery, and oil film is by destroying thus.Reasonable disposition and the reliable shaft current protective device of installing, in high-pressure diesel
It is particularly important in the protection of generating set.
Summary of the invention
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of high pressure that can eliminate shaft current
Diesel generating set.
The utility model achieves the above object through the following technical schemes:
A kind of high-pressure diesel generating set that can eliminate shaft current, including generator rotor shaft, copper brush, bracket and ground connection
Cable, the copper brush contact the generator rotor shaft, and the copper brush is fixed on institute by screw rod with the generator rotor shaft
State on bracket, the exposure of the copper brush and the generator rotor shaft by the upper adjusting nut that is set on the screw rod and
Lower adjusting nut control.
The utility model is preferred, and the bracket is installed on generator casing, the bracket and the generator casing
It is fixed by fixing bolt.
The utility model is preferred, is connected between the copper brush and generator casing with earth lead.
The utility model has the beneficial effects that:
The utility model, will be in high-voltage generator shaft by copper brush electric installation on the basis of original high-voltage generator
Shaft current imports the earth, effectively eliminates the shaft current of high-voltage generator shaft, avoids shaft current to generator bearing and axis
The harm of spot corrosion watt is caused, structure is simple, and effect is obvious, facilitates later maintenance；The utility model simple, performance with structure
The stable and longer advantage of service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the high-pressure diesel generating set that one kind described in the utility model can eliminate shaft current
One；
Fig. 2 is the structural schematic diagram for the high-pressure diesel generating set that one kind described in the utility model can eliminate shaft current
One.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As depicted in figs. 1 and 2: one kind can eliminate the high-pressure diesel generating set of shaft current, including generator rotor shaft
1, copper brush 2, bracket 6 and earth cable 9, copper brush 2 contact generator rotor shaft 1, and copper brush 2 and generator rotor shaft 1 pass through screw rod 5
Be fixed on bracket 6, the exposure of copper brush 2 and generator rotor shaft 1 by the upper adjusting nut 3 that is set on screw rod 5 and under
Adjusting nut 4 controls.
As depicted in figs. 1 and 2, bracket 6 is installed on generator casing 8, and bracket 6 and generator casing 8 are by fixing bolt 7
It is fixed.
As depicted in figs. 1 and 2, it is connected between copper brush 2 and generator casing 8 with earth lead 9.
In conclusion the utility model is by copper brush electric installation on the basis of original high-voltage generator, by high-voltage power
Shaft current in machine shaft imports the earth, effectively eliminates the shaft current of high-voltage generator shaft, avoids shaft current to generator
Group bearing and bearing shell cause the harm of spot corrosion, and structure is simple, and effect is obvious, facilitates later maintenance；The utility model has knot
Structure is simple, performance is stable and the longer advantage of service life.
Those skilled in the art do not depart from the essence and spirit of the utility model, can realize this reality there are many deformation scheme
With novel, the above is only the preferred feasible embodiment of the utility model, not thereby limits to the power of the utility model
Sharp range, it is all with the variation of equivalent structure made by the utility model specification and accompanying drawing content, it is both contained in the utility model
Interest field within.
Claims (2)
1. the high-pressure diesel generating set that one kind can eliminate shaft current, which is characterized in that including generator rotor shaft, copper brush,
Bracket and earth cable, the copper brush contact the generator rotor shaft, and the copper brush and the generator rotor shaft pass through spiral shell
Bar is fixed on the bracket, and the exposure of the copper brush and the generator rotor shaft is upper on the screw rod by being set to
Adjusting nut and the control of lower adjusting nut, are connected between the copper brush and generator casing with earth lead.
2. the high-pressure diesel generating set that one kind according to claim 1 can eliminate shaft current, which is characterized in that described
Bracket is installed on generator casing, and the bracket is fixed with the generator casing by fixing bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786879.7U CN209170154U (en) | 2018-11-01 | 2018-11-01 | A kind of high-pressure diesel generating set that can eliminate shaft current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786879.7U CN209170154U (en) | 2018-11-01 | 2018-11-01 | A kind of high-pressure diesel generating set that can eliminate shaft current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209170154U true CN209170154U (en) | 2019-07-26 |
Family
ID=67336182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821786879.7U Active CN209170154U (en) | 2018-11-01 | 2018-11-01 | A kind of high-pressure diesel generating set that can eliminate shaft current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209170154U (en) |
-
2018
- 2018-11-01 CN CN201821786879.7U patent/CN209170154U/en active Active
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| GR01 | Patent grant | ||
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