CN202444381U - Rotating shaft grounding device for generator - Google Patents
Rotating shaft grounding device for generator Download PDFInfo
- Publication number
- CN202444381U CN202444381U CN2012200937487U CN201220093748U CN202444381U CN 202444381 U CN202444381 U CN 202444381U CN 2012200937487 U CN2012200937487 U CN 2012200937487U CN 201220093748 U CN201220093748 U CN 201220093748U CN 202444381 U CN202444381 U CN 202444381U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- earthing device
- generator
- grounding
- elastic component
- 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
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 29
- 229910052802 copper Inorganic materials 0.000 claims description 29
- 239000010949 copper Substances 0.000 claims description 29
- 238000009954 braiding Methods 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 229920001971 elastomer Polymers 0.000 claims description 10
- 239000000806 elastomer Substances 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
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- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model provides a rotating shaft grounding device for a generator. The grounding device comprises a plurality of woven pigtail components (2) which are contacted with the periphery of a rotating shaft (1) of a generator, and a grounding electric brush (3) and an elastic part (4), wherein the handle (31) of the grounding electric brush (3) is connected with the elastic part (4) and fixedly arranged on the woven pigtail components (2) through the elastic part (4); and the contact end (32) of the grounding electric brush (3) is compressed on the periphery of the rotating shaft (1) in the elastic action of the elastic part (4). According to the rotating shaft grounding device for the generator, the grounding electric brush (3) is added close to the woven pigtails (22) of the woven pigtail components (2), and is kept in a state of being compressed on the periphery of the rotating shaft (1) in the elastic action of the elastic part (4), so that the contact is excellent, and higher grounding reliability is realized.
Description
Technical field
The utility model relates to a kind of earthing device, particularly, relates to a kind of earthing device of rotating shaft of high-rating generator.
Background technology
In high-rating generator (for example 1000MW or above generator), the diameter dimension of the rotating shaft 1 of generator is bigger, reaches about 1m, and is as shown in Figure 1.Thereby when the earthing device of alternator shaft was installed, employing contacted (comprising that for example contact-making surface is the braiding copper pigtail 22 about 80mm*10mm) outer peripheral face of said rotating shaft 1 around a plurality of braiding copper pigtail members 2 of the outer peripheral face setting of rotating shaft 1 usually.Keep and the contacting of rotating shaft 1 but this contact is deadweight and the elasticity through braiding copper pigtail 22, go into Fig. 1 or shown in Figure 3.If during generator operation because the high rotating speed of rotating shaft 1 and the factor affecting such as oil pollution of rotating shaft 1 outer peripheral face; Then cause the loose contact of ground connection braiding copper pigtail 22 and rotating shaft 1 outer peripheral face easily; Thereby influence the ground connection effect; Cause the measurement of one point earth protection of alternator shaft inaccurate, and then trigger the generator rotor one-point grounding protection signal by error.For this reason, be necessary to strengthen the ground connection reliability of the rotating shaft earthing device of this high-rating generator.
The utility model content
The purpose of the utility model provides a kind of alternator shaft earthing device, and this earthing device is simple in structure but have ground connection effect and reliability preferably.
For realizing above-mentioned purpose; The utility model provides a kind of alternator shaft earthing device; This earthing device comprises the contacted a plurality of braiding copper pigtail members of outer peripheral face with the rotating shaft of generator; Wherein this earthing device also comprises grounding brush and elastic component, and the brush carrier of this grounding brush connects said elastic component and is fixedly installed on the said braiding copper pigtail member through this elastomer, and the contact jaw of said grounding brush presses down the outer peripheral face that touches in said rotating shaft at the elastic reaction of said elastic component.
Preferably, said braiding copper pigtail member comprises the braiding copper pigtail of installing on mounting bracket and this mounting bracket, and said mounting bracket is fixedly installed on the said generator, and said elastic component is fixedly installed on the said mounting bracket.
Preferably, said grounding brush and elastic component form along the radial direction of said rotating shaft and arrange.
Preferably, said grounding brush is a carbon brush for electric machine.
Preferably, said elastic component is adjustable stage clip.
Preferably, said a plurality of braiding copper pigtail member evenly distributes along the circumferencial direction of the outer peripheral face of said rotating shaft.
Pass through technique scheme; The alternator shaft earthing device of the utility model is at the other grounding brush that installed additional of braiding copper pigtail; This grounding brush keeps pressure to touch in the state of the outer peripheral face of rotating shaft under elastomeric elastic reaction, thereby contact is good, has higher ground connection reliability.
Other feature and advantage of the utility model will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with following embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the scheme of installation according to the alternator shaft earthing device of the embodiment of the utility model;
Fig. 2 is the structural representation of the alternator shaft earthing device among Fig. 1;
View when Fig. 3 contacts with rotating shaft for the alternator shaft earthing device among Fig. 1.
Description of reference numerals
1 rotating shaft, 2 braiding copper pigtail members
3 grounding brushes, 4 elastic components
21 mounting brackets, 22 braiding copper pigtails
31 brush carriers, 32 contact jaws
Embodiment
Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model.Should be understood that embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
As depicted in figs. 1 and 2; The utility model provides a kind of alternator shaft earthing device; This earthing device comprises the contacted a plurality of braiding copper pigtail members 2 of outer peripheral face with the rotating shaft 1 of generator; Wherein, This earthing device also comprises grounding brush 3 and elastic component 4, and the brush carrier 31 of this grounding brush 3 connects said elastic component 4 and is fixedly installed on the said braiding copper pigtail member 2 through this elastomer 4, and the contact jaw 32 of said grounding brush 3 presses down the outer peripheral face that touches in said rotating shaft 1 at the elastic reaction of said elastic component 4.In the alternator shaft earthing device of the utility model, the ground connection reliability of grounding brush with nearly step ground amplification generator rotating shaft is set through increase.Wherein, For making the grounding brush of setting up 3 can keep constantly keeping in touch with the rotating shaft 1 of generator; This grounding brush 3 is fixedly installed on the braiding copper pigtail member 2 through elastomer 4; Make the surface of grounding brush 3 countershafts 1 keep certain pressure with the resilient force of utilizing elastomer 4, thereby constantly keep in touch.
Particularly; As shown in Figure 2; Said braiding copper pigtail member 2 can comprise the braiding copper pigtail of installing on mounting bracket 21 and this mounting bracket 21 22, and said mounting bracket 21 is fixedly installed on the said generator, and said elastic component 4 is fixedly installed on the said mounting bracket 21.In Fig. 1, mounting bracket 21 is fixedly installed to through set bolt on the ring flange of installing in the rotating shaft 1 of generator, and the extension that stretches out from ring flange of this mounting bracket 21 is provided with screw screw thread etc., with fixed installation braiding copper pigtail 22 and elastomer 4.In Fig. 2, braiding copper pigtail 22 and elastomer 4 be fixedly mounted on respectively mounting bracket 21 from the both sides of stretching out plate that ring flange stretches out, and shown in Figure 3 for being installed in the homonymy that stretches out plate.
Wherein, Said elastic component 4 is preferably stage clip; One end of this stage clip is connected with the brush carrier 31 of grounding brush 3; The other end is installed on the said mounting bracket 21 through connector (for example shown in Figure 3 be welded to the iron plate piece that has screw on the mounting bracket 21), is the radial direction of rotating shaft 1 with the stage clip after guaranteeing to install with the direction of grounding brush 3, and promptly said grounding brush 3 and elastic component 4 preferably are arranged as the radial direction of the said rotating shaft 1 in edge; Elastic pressure can act on the outer peripheral face of rotating shaft 1 better, thereby forms contact better.More preferably; Elastic component 4 may be selected to be the adjustable stage clip of adjustable in pressure joint or adjustable in length; Thereby according to rotating shaft 1 and the situation that contacts that weaves between copper pigtail 22 and the grounding brush 3, and the installation situation of elastomer 4 and grounding brush 3, the pressure size or the stage clip length of regulating stage clip.And said grounding brush 3 is preferably the carbon brush for electric machine that is used for motor, and the contact performance of carbon brush for electric machine is better, conveniently contacts with rotating shaft.This carbon brush for electric machine promptly adopts the common on the market Shanghai root NCC634 type carbon brush for electric machine that rubs in this execution mode.
In addition, said a plurality of braiding copper pigtail member 2 is preferably along the circumferencial direction of the outer peripheral face of said rotating shaft 1 and evenly distributes.For high-rating generator,, a plurality of braiding copper pigtails 22 are set usually because the diameter of rotating shaft 1 is bigger.And the alternator shaft earthing device of the utility model can be installed grounding brush 3 as required on the mounting bracket 21 of one or more braiding copper pigtail members 2, to reach better contact reliability ability.
The alternator shaft earthing device of the utility model has installed grounding brush additional on braiding copper pigtail side, thereby and form excellent contact between the rotating shaft, have higher ground connection reliability.When carrying out the measurement of alternator shaft one point earth protection, measurement result can be unlikely to cause mistake to send out alternator shaft one point earth guard signal more accurately and reliably like this.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned execution mode, in the technical conceive scope of the utility model, can carry out multiple simple variant to the technical scheme of the utility model; In the brush carrier 31 that for example elastomer 4 is installed in grounding brush 3 for other elastic component except that stage clip or elastomer, and these simple variant all belong to the protection range of the utility model.
Claims (6)
1. alternator shaft earthing device; This earthing device comprises the contacted a plurality of braiding copper pigtail members of outer peripheral face (2) with the rotating shaft (1) of generator; It is characterized in that; This earthing device also comprises grounding brush (3) and elastic component (4); The brush carrier (31) of this grounding brush (3) connects said elastic component (4) and is fixedly installed on the said braiding copper pigtail member (2) through this elastomer (4), and the contact jaw (32) of said grounding brush (3) presses down the outer peripheral face that touches in said rotating shaft (1) at the elastic reaction of said elastic component (4).
2. alternator shaft earthing device according to claim 1; It is characterized in that; Said braiding copper pigtail member (2) comprises the braiding copper pigtail (22) that mounting bracket (21) and this mounting bracket (21) are upward installed; Said mounting bracket (21) is fixedly installed on the said generator, and said elastic component (4) is fixedly installed on the said mounting bracket (21).
3. alternator shaft earthing device according to claim 1 is characterized in that, said grounding brush (3) and elastic component (4) form along the radial direction of said rotating shaft (1) and arrange.
4. alternator shaft earthing device according to claim 1 is characterized in that, said grounding brush (3) is a carbon brush for electric machine.
5. alternator shaft earthing device according to claim 1 is characterized in that, said elastic component (4) is adjustable stage clip.
6. alternator shaft earthing device according to claim 1 is characterized in that, said a plurality of braiding copper pigtail members (2) evenly distribute along the circumferencial direction of the outer peripheral face of said rotating shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200937487U CN202444381U (en) | 2012-03-13 | 2012-03-13 | Rotating shaft grounding device for generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200937487U CN202444381U (en) | 2012-03-13 | 2012-03-13 | Rotating shaft grounding device for generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202444381U true CN202444381U (en) | 2012-09-19 |
Family
ID=46825811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200937487U Expired - Lifetime CN202444381U (en) | 2012-03-13 | 2012-03-13 | Rotating shaft grounding device for generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202444381U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683687A (en) * | 2013-12-12 | 2014-03-26 | 中国神华能源股份有限公司 | Turbonator grounding device and method |
| CN104052202A (en) * | 2013-03-14 | 2014-09-17 | 雷勃美国公司 | Grounding device for electric machine and methods of assembling same |
| CN105580218A (en) * | 2013-09-09 | 2016-05-11 | 申克铁路和医疗系统有限责任公司 | Discharge device |
| CN109075666A (en) * | 2016-05-12 | 2018-12-21 | 株式会社三国 | Driving device and pump installation |
| CN111786513A (en) * | 2020-05-25 | 2020-10-16 | 东方电气集团东方电机有限公司 | Turbine generator pivot earthing device |
| 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 |
| CN114696545A (en) * | 2022-04-11 | 2022-07-01 | 华能北京热电有限责任公司 | Braided generator main shaft grounding device |
-
2012
- 2012-03-13 CN CN2012200937487U patent/CN202444381U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052202A (en) * | 2013-03-14 | 2014-09-17 | 雷勃美国公司 | Grounding device for electric machine and methods of assembling same |
| CN104052202B (en) * | 2013-03-14 | 2018-04-06 | 雷勃美国公司 | Motor and the earthing or grounding means for motor |
| CN105580218A (en) * | 2013-09-09 | 2016-05-11 | 申克铁路和医疗系统有限责任公司 | Discharge device |
| CN105580218B (en) * | 2013-09-09 | 2018-08-24 | 申克铁路和医疗系统有限责任公司 | Electric discharge device |
| CN103683687A (en) * | 2013-12-12 | 2014-03-26 | 中国神华能源股份有限公司 | Turbonator grounding device and method |
| CN109075666A (en) * | 2016-05-12 | 2018-12-21 | 株式会社三国 | Driving device and pump installation |
| CN111786513A (en) * | 2020-05-25 | 2020-10-16 | 东方电气集团东方电机有限公司 | Turbine generator pivot earthing device |
| 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 |
| CN114696545A (en) * | 2022-04-11 | 2022-07-01 | 华能北京热电有限责任公司 | Braided generator main shaft grounding device |
| CN114696545B (en) * | 2022-04-11 | 2024-07-12 | 华能北京热电有限责任公司 | Large-shaft grounding device of brush braid type generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120919 |
|
| CX01 | Expiry of patent term |