CN206452261U - A kind of grounding carbon brush device of electric generator - Google Patents
A kind of grounding carbon brush device of electric generator Download PDFInfo
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- CN206452261U CN206452261U CN201720119666.8U CN201720119666U CN206452261U CN 206452261 U CN206452261 U CN 206452261U CN 201720119666 U CN201720119666 U CN 201720119666U CN 206452261 U CN206452261 U CN 206452261U
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- carbon brush
- braiding
- shunt welding
- brush
- generator
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Abstract
The utility model belongs to technical field of electric power, and in particular to a kind of grounding carbon brush device of electric generator.The grounding carbon brush device of electric generator, including carbon brush brush carrier, grounding carbon brush, brush holder, brush holder includes being fixedly connected with part with generator and for fixing carbon brush brush carrier part, part is being fixedly connected with generator and braiding shunt welding is provided between carbon brush brush carrier part for fixing, and is weaving shunt welding and is being contacted with generator's motor shaft.The grounding carbon brush device of electric generator can be effectively prevented from generator's motor shaft directly contacted with grounding carbon brush it is unreliable caused by beat sparking problem, be conducive to improve rotor machine security performance.
Description
Technical field
The utility model belongs to technical field of electric power, and in particular to a kind of grounding carbon brush device of electric generator.
Background technology
In generator operation, the grounding carbon brush of generator's motor shaft mainly plays elimination generator's motor shaft electrostatic electricity over the ground
The effect of pressure, in addition, the grounding carbon brush of generator's motor shaft is also acted as rotor ground protection device and for measurement rotor coil
The effect of positive and negative electrode voltage-to-ground.Therefore, the grounding carbon brush device of generator's motor shaft has act to the reliability service of generator
The influence of sufficient weight.
The earthing or grounding means of generator is two sets of grounding carbon brushs in the prior art, when generator operation because rotating speed is high, oil
The factors such as dirty seriously polluted or brush holder spring decline, can cause grounding carbon brush and generator's motor shaft loose contact, draw
The surface run_out that grounding carbon brush is played in generator's motor shaft is struck sparks, and not only can not reliably play elimination generator's motor shaft electrostatic over the ground
The effect of voltage, also results in generator rotor one-point grounding protection measurement inaccurate.In addition, bounce sparking also results in generator
The oxidation aggravation of big axle, and safe operation of the bounce sparking for a long time to hydrogen-cooled unit will also result in huge threat.
For generator grounding carbon brush beat strike sparks the problem of Traditional solutions mainly by change grounding carbon brush,
The bounce to eliminate grounding carbon brush such as polishing generator's motor shaft, adjustment grounding carbon brush pressure is shut down to strike sparks.But, prior art
These solutions waste time and energy, and also add the workload of staff's regular maintenance, and can not fundamentally solve
Bounce sparking problem between generator's motor shaft and grounding carbon brush.
In view of this, the utility model is proposed.
Utility model content
The purpose of this utility model is to provide a kind of grounding carbon brush device of electric generator, and it can effectively prevent generator
In running due to contacted between grounding carbon brush and generator's motor shaft it is unstable caused by beat sparking problem, and can be with
The frequency of grounding carbon brush is changed in reduction, saves material, and make a kind of technical scheme for fundamentally solving the problems, such as bounce sparking.
In order to solve technical problem, described technique effect is reached, the utility model uses the basic conception of technical scheme
It is as follows：
A kind of grounding carbon brush device of electric generator, including carbon brush brush carrier, grounding carbon brush, brush holder, wherein, brush holder includes mutually interconnecting
What is connect is fixedly connected with part with generator and for fixing carbon brush brush carrier part, part is fixedly connected with generator and for fixing
Braiding shunt welding is provided between carbon brush brush carrier part, braiding shunt welding is contacted with generator's motor shaft.
Above-described grounding carbon brush device of electric generator increases on the basis of prior art grounding carbon brush device of electric generator
The braiding shunt welding that can be contacted with generator's motor shaft, influence guarantee and generator that the braiding shunt welding can be by self gravitation
The steady contact of big axle, even if occurring to loosen installed in the grounding carbon brush of carbon brush brush carrier or deforming causes effectively to generate electricity
The big axle electrostatic potential release of machine, electrostatic potential can also be discharged, occur in the prior art so as to avoid by weaving shunt welding
Bounce spark phenomenon, make the operation of generator more safe and reliable.
Preferably, the side for fixing carbon brush brush carrier part with braiding shunt welding is contacted is provided with first through hole, with generator
Part and the side that contact of braiding shunt welding are fixedly connected with provided with braiding shunt welding fixed plate, in braiding shunt welding fixed plate with and first
The second corresponding through hole of through hole；Realized by bolt-through first through hole, the second through hole and attaching nut and weave consolidating for shunt welding
It is fixed.
Technical scheme above can make the fixation of braiding shunt welding relatively reliable firmly, and can be in order to big by generator
Electrostatic potential release in axle running.In addition, the device only needs to make simple on the big frame of prior art construction
Modification just can be realized, reduce cost and applicability is good.
Preferably, braiding shunt welding fixed plate and the part clamping braiding shunt welding for fixing carbon brush brush carrier, and braiding shunt welding
Dead plate upper end is higher than the upper end for the part for being used to fix carbon brush brush carrier, and braiding shunt welding fixed plate lower end, which is higher than, to be used to fix carbon brush
The lower end of the part of brush carrier.
Using above-mentioned technical proposal, increase braiding shunt welding carbon brush brush carrier can be fixed with being used for while material is saved
Contact area between part and braiding shunt welding fixed plate, is easy to quickly eliminate electrostatic potential.
Preferably, the second through hole in braiding shunt welding fixed plate is located therein.Being arranged such can ensure to weave shunt welding
Firmly contacted with braiding shunt welding fixed plate, and will not be sagging because weaving the effect of shunt welding self gravitation.
Preferably, braiding shunt welding fixed plate is provided with screw thread with the one side that braiding shunt welding is contacted, and screw thread can prevent braiding
Shunt welding comes off.
It is highly preferred that braiding shunt welding is connected to earth point by the shunt welding of bolt and grounding carbon brush.Being arranged such to make
Complementation is formed between grounding carbon brush and braiding shunt welding, it is ensured that the electrostatic potential produced on generator's motor shaft can be with timely and effective
Ground is cancelled, and forms dual protection mechanism, and reliability is higher.
Preferably, braiding shunt welding is the braiding shunt welding of copper material.
The electric conductivity of copper is high, efficiently can export the electrostatic induced current on generator's motor shaft, it is to avoid electrostatic induced current is to hair
The big axle of motor causes damage, and the relative low price of copper, can reduce the manufacturing cost of braiding shunt welding.
Preferably, one end that braiding shunt welding is in contact with generator's motor shaft has mao bayonet fittings that scatter.
Mao bayonet fittings that scatter can increase the contact area between braiding shunt welding and generator's motor shaft, it is ensured that braiding shunt welding
Effectively contacted with the generator's motor shaft moment.
Preferably, braiding shunt welding and the contact area of generator's motor shaft are 200mm*40mm.
Preferably, the specification of grounding carbon brush is 25*32*100mm.
Preferably, the inside of carbon brush brush carrier is provided with stage clip, and stage clip two ends connect grounding carbon brush and generation block respectively.
Preferably, the specification of stage clip is 1.2KG.
Preferably, the inwall of carbon brush brush carrier has screw thread.
Preferably, grounding carbon brush device of electric generator is multiple, and the grounding carbon brush of each grounding carbon brush device of electric generator
It is evenly provided on braiding shunt welding on the outer surface of generator's motor shaft.
The utility model compared to the prior art, with following beneficial effect：
Described grounding carbon brush device of electric generator includes grounding carbon brush and two kinds of shunt welding of braiding dredges generator's motor shaft electrostatic
The mechanism of voltage, occurs to loosen or because the factors such as oil pollution can not effectively play a role even in grounding carbon brush, still can be with
The electrostatic potential produced on generator's motor shaft is offset by the effect of braiding shunt welding, it is to avoid to electrostatic induced current to generator's motor shaft
Cause damage, therefore, the device thoroughly solves the bounce sparking problem of grounding carbon brush in generator operation, it is ensured that machine
The safe and stable operation of group, safety and reliability is more preferable, and the device can also avoid frequently changing grounding carbon brush and increasing
Plus the amount of labour of staff.
Brief description of the drawings
The primary structure schematic diagram of Fig. 1 grounding carbon brush device of electric generator of the prior art；
The primary structure schematic diagram of Fig. 2 grounding carbon brush device of electric generator described in the utility model.
Marked in figure：1- brush holders；2- carbon brush brush carriers；3- weaves shunt welding；4- weaves shunt welding fixed plate.
Embodiment
Embodiment one
A kind of grounding carbon brush device of electric generator, as shown in Fig. 2 (not showing in picture including carbon brush brush carrier 2, grounding carbon brush
Go out), brush holder 1, the brush holder 1 includes being fixedly connected with part with generator and for fixing carbon brush brush carrier part, solid with generator
Determine coupling part and braiding shunt welding 3 is provided between carbon brush brush carrier part for fixing, the braiding shunt welding 3 and generator's motor shaft
Contact.
Substantially frame of the grounding carbon brush device of electric generator in the grounding carbon brush device of electric generator (as shown in Figure 1) of prior art
Designed on the basis of frame, Fig. 1 and Fig. 2 main presentations have gone out the part that the utility model emphasis is improved and innovated, other
Relevant part composition is not shown one by one, but the art those of ordinary skill should be appreciated that.
The grounding carbon brush device of electric generator is added and generated electricity on the basis of prior art grounding carbon brush device of electric generator
The braiding shunt welding 3 of the big axle contact of machine, the braiding shunt welding 3 can ensure the stabilization with generator's motor shaft by the influence of self gravitation
Contact, therefore, if grounding carbon brush because occur loosen or deformation etc. factor cause can not effectively by generator's motor shaft electrostatic electricity
Pressure release, can also be discharged electrostatic potential by weaving shunt welding 3, so that it is existing to avoid the bounce sparking occurred in the prior art
As making the operation of generator more safe and reliable.
Side for fixing carbon brush brush carrier part with braiding shunt welding 3 is contacted is provided with first through hole, fixes and connects with generator
The side that socket part point is contacted with braiding shunt welding is provided with braiding shunt welding fixed plate 4, and weaving in shunt welding fixed plate 4 has and first through hole
The second corresponding through hole；The fixation of braiding shunt welding 3 is realized by bolt-through first through hole, the second through hole and attaching nut.
Braiding shunt welding fixed plate 4 and the part clamping braiding shunt welding 3 for fixing carbon brush brush carrier, and braiding shunt welding fixed plate
4 upper ends are higher than the upper end for the part for being used to fix carbon brush brush carrier, and braiding shunt welding 3 fixed plate lower end, which is higher than, to be used to fix carbon brush brush carrier
Part lower end.
The second through hole in braiding shunt welding fixed plate 4 is located therein.
Technical scheme above can make the fixation of braiding shunt welding 3 relatively reliable firmly, and be conducive to generator is big
Electrostatic potential release in axle running.In addition, the device only needs to make simple on the big frame of prior art construction
Modification just can be realized, reduce cost and applicability is good.
Braiding shunt welding 3 is connected to earth point by the shunt welding of bolt and grounding carbon brush.Grounding carbon brush can be made by being arranged such
Braiding shunt welding 3 between form complementation, it is ensured that the electrostatic potential produced on generator's motor shaft can timely and effectively by
Disappear, form dual protection mechanism, reliability is higher.
The braiding shunt welding 3 of the present embodiment is the braiding shunt welding prepared using metallic copper.
One end that braiding shunt welding 3 is in contact with generator's motor shaft has mao bayonet fittings that scatter.
Because the electric conductivity of copper is high, it is possible to efficiently export the electrostatic induced current on generator's motor shaft, it is to avoid electrostatic
Electric current causes damage to generator's motor shaft, and the relative low price of copper, can reduce the manufacturing cost of braiding shunt welding 3.
Mao bayonet fittings that scatter can increase the contact area between braiding shunt welding 3 and generator's motor shaft, and can be true
Braiding shunt welding 3 is protected effectively to contact with the generator's motor shaft moment.
The contact area for weaving shunt welding 3 and generator's motor shaft is 200mm*40mm.
The specification of grounding carbon brush 2 is 25*32*100mm.
The inside of carbon brush brush carrier 2 is provided with stage clip, and stage clip two ends connect grounding carbon brush and generation block respectively, and the specification of stage clip is
1.2KG。
The inwall of carbon brush brush carrier 2 has screw thread.
In specific implementation process, grounding carbon brush device of electric generator can be multiple, and each generator is grounded carbon
The grounding carbon brush and braiding shunt welding 3 of brush device are evenly provided on the outer surface of generator's motor shaft.
The utility model compared to the prior art, with following beneficial effect：
Grounding carbon brush device of electric generator includes grounding carbon brush and two kinds of shunt welding of braiding dredges generator's motor shaft electrostatic potential
Mechanism, occurs to loosen or because the factors such as oil pollution can not effectively play a role even in grounding carbon brush, still can be by volume
The electrostatic potential produced on generator's motor shaft is offset in the effect for knitting shunt welding, it is to avoid electrostatic induced current is caused to generator's motor shaft to damage
Evil, therefore, the device thoroughly solve the bounce sparking problem of grounding carbon brush in generator operation, it is ensured that the peace of unit
Full stable operation, safety and reliability is more preferable, and the device can also avoid frequently changing grounding carbon brush and increase work
The amount of labour of personnel.
Described above is only preferred embodiment of the present utility model, not makees any formal to the utility model
Limitation, although the utility model is disclosed as above with preferred embodiment, but is not limited to the utility model, it is any to be familiar with
The technical staff of this patent is not being departed from the range of technical solutions of the utility model, when the technology contents work using above-mentioned prompting
Go out a little change or be modified to the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solutions of the utility model,
Any simple modification, equivalent variations and the modification made according to technical spirit of the present utility model to above example, still belong to
In the range of the utility model scheme.
Claims (10)
1. a kind of grounding carbon brush device of electric generator, including carbon brush brush carrier, grounding carbon brush, brush holder, it is characterised in that brush holder includes phase
What is connected is fixedly connected with part and the part for fixing carbon brush brush carrier with generator, and part is fixedly connected with generator and is used
Braiding shunt welding is provided between the part of fixed carbon brush brush carrier, and weaves shunt welding and is contacted with generator's motor shaft.
2. a kind of grounding carbon brush device of electric generator according to claim 1, it is characterised in that for fixing carbon brush brush carrier
The side that part is contacted with braiding shunt welding is provided with first through hole, and the side that part is contacted with braiding shunt welding is fixedly connected with generator
Provided with braiding shunt welding fixed plate, there is second through hole corresponding with first through hole in braiding shunt welding fixed plate；Passed through by bolt
Wear first through hole, the second through hole and attaching nut realizes the fixation of braiding shunt welding.
3. a kind of grounding carbon brush device of electric generator according to claim 1, it is characterised in that braiding shunt welding fixed plate is with using
In the part clamping braiding shunt welding of fixed carbon brush brush carrier, and braiding shunt welding dead plate upper end is higher than the portion for being used for fixing carbon brush brush carrier
The upper end divided, braiding shunt welding fixed plate lower end is higher than the lower end for the part for being used to fix carbon brush brush carrier.
4. a kind of grounding carbon brush device of electric generator according to claim 1, it is characterised in that in braiding shunt welding fixed plate
Second through hole is located therein.
5. a kind of grounding carbon brush device of electric generator according to claim 2, it is characterised in that braiding shunt welding by bolt with
The shunt welding of grounding carbon brush is connected to earth point.
6. a kind of grounding carbon brush device of electric generator according to claim 1, it is characterised in that braiding shunt welding is copper material
Weave shunt welding.
7. a kind of grounding carbon brush device of electric generator according to claim 1, it is characterised in that braiding shunt welding and generator are big
One end that axle is in contact has mao bayonet fittings that scatter.
8. a kind of grounding carbon brush device of electric generator according to claim 1, it is characterised in that braiding shunt welding and generator are big
The contact area of axle is 200mm*40mm.
9. a kind of grounding carbon brush device of electric generator according to claim 1, it is characterised in that the specification of grounding carbon brush is
25*32*100mm。
10. a kind of grounding carbon brush device of electric generator according to claim 1, it is characterised in that the inside of carbon brush brush carrier is set
There is stage clip, stage clip two ends connect generation block and grounding carbon brush respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119666.8U CN206452261U (en) | 2017-02-09 | 2017-02-09 | A kind of grounding carbon brush device of electric generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119666.8U CN206452261U (en) | 2017-02-09 | 2017-02-09 | A kind of grounding carbon brush device of electric generator |
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| Publication Number | Publication Date |
|---|---|
| CN206452261U true CN206452261U (en) | 2017-08-29 |
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ID=59666642
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720119666.8U Active CN206452261U (en) | 2017-02-09 | 2017-02-09 | A kind of grounding carbon brush device of electric generator |
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| CN (1) | CN206452261U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630650A (en) * | 2020-11-11 | 2021-04-09 | 苏州热工研究院有限公司 | Generator shaft voltage acquisition device and system |
| CN112737226A (en) * | 2020-12-22 | 2021-04-30 | 国家电投集团江西电力工程有限公司南昌分公司 | Generator main shaft earthing device |
-
2017
- 2017-02-09 CN CN201720119666.8U patent/CN206452261U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630650A (en) * | 2020-11-11 | 2021-04-09 | 苏州热工研究院有限公司 | Generator shaft voltage acquisition device and system |
| CN112737226A (en) * | 2020-12-22 | 2021-04-30 | 国家电投集团江西电力工程有限公司南昌分公司 | Generator main shaft earthing device |
| CN112737226B (en) * | 2020-12-22 | 2022-10-18 | 国家电投集团江西电力工程有限公司南昌分公司 | Grounding device for large shaft of generator |
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