CN104577614B - Excitation system - Google Patents
Excitation system Download PDFInfo
- Publication number
- CN104577614B CN104577614B CN201410687633.4A CN201410687633A CN104577614B CN 104577614 B CN104577614 B CN 104577614B CN 201410687633 A CN201410687633 A CN 201410687633A CN 104577614 B CN104577614 B CN 104577614B
- Authority
- CN
- China
- Prior art keywords
- carbon brush
- main body
- face
- insulated
- insulating barrier
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/26—Solid sliding contacts, e.g. carbon brush
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/36—Connections of cable or wire to brush
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/38—Brush holders
- H01R39/41—Brush holders cartridge type
- H01R39/415—Brush holders cartridge type with self-recoiling spring
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/003—Structural associations of slip-rings
Abstract
A kind of excitation system, including bearing, the rotor rotated on the bearing, it is arranged in bearing and the brush carrier abutted with rotor.Brush carrier includes carbon brush holder, insulated carbon brush, elastic component, handle.Wherein, insulated carbon brush includes carbon brush main body, wire, insulating barrier.Carbon brush main body has first end face, second end face and side, and side is polishing layer；Wire is arranged in first end face, and is electrically connected with carbon brush main body；Insulating barrier wraps up lateral parts.Accepting groove is offered on carbon brush holder, insulated carbon brush is slided and is contained in accepting groove；Elastic component and insulated carbon brush elastic connection；Handle is connected with carbon brush holder, which is provided with fixed screw, and wire is connected or disconnected with fixed screw.By making excitation system rotor insulated carbon brush, avoid removing the excitation connection busbar at bearing, ensure the accuracy of correlation test test result of the generator amature in cold (heat) state so that the grid-connected time advance of generator, improve operating efficiency and the stability of unit operation.
Description
Technical field
The present invention relates to a kind of excitation system.
Background technology
In power plant, in order to monitor generator amature in various states such as generator unit stator thorax interior insulations, it is necessary to hair
Rotor carries out the testing experiment of dynamic (quiet) state under cold (heat) state, such as：Dynamic waveform method, repetition pulse method, D.C. resistance
Method, AC resistance method, the AC impedance under heat (cold) state and power attenuation experiment etc..
Traditional experience and way be, it is necessary to first remove excitation carbon brush bearing at connection busbar, then could be surveyed
Have a try and test.And when removing connection busbar and installation connection busbar, on the one hand, need to expend longer time, on the other hand, instead
Multiple demolition, installation busbar is unfavorable for busbar and the conducting at bearing Hard link.So as to cause the reduction of operating efficiency, add grid-connected
Time, while also reduce the reliability of busbar junction so that the operation stability of unit declines.
The content of the invention
The purpose of the present invention is to overcome weak point of the prior art, there is provided one kind improves operating efficiency, improves unit
The excitation system of operation stability.
The purpose of the present invention is achieved through the following technical solutions：
A kind of insulated carbon brush, including：
Carbon brush main body, the carbon brush main body have first end face, second end face and side；
Wire, one end of the wire are arranged in the first end face of the carbon brush main body, and with the carbon brush main body
Inside electrical connection；
Insulating barrier, the lateral parts of the insulating barrier and the carbon brush main body wrap up, one end of the insulating barrier with
The edge of the EDGE CONTACT of the first end face, the other end of the insulating barrier and the second end face, which is formed, to be spaced, the side
The position contacted on face with the insulating barrier forms polishing layer.
In one of the embodiments, the insulating barrier is epoxy resin layer.
In one of the embodiments, the carbon brush main body is square body structure.
In one of the embodiments, opened up in the first end face fluted.
A kind of brush carrier, including：
Carbon brush holder, multiple accepting grooves is offered on the carbon brush holder, multiple accepting grooves are arranged in order；
Above-mentioned insulated carbon brush, the insulated carbon brush are slided and are contained in the accepting groove, the carbon brush main body it is described
Cell wall contact portion on side with the accepting groove is insulated by the insulating barrier；
Elastic component, the elastic component is on the carbon brush holder, and the insulation carbon with being contained in the accepting groove
Brush elastic connection；
Handle, the handle are connected with the carbon brush holder, and the handle is provided with fixed screw, the other end of the wire
It is connected or disconnects with the fixed screw.
A kind of excitation system, including：
Bearing；
Rotor, the rotor are rotatablely installed on the bearing, and the rotor has slip ring；
Above-mentioned brush carrier, the brush carrier is arranged in the bearing, and is abutted with the slip ring of the rotor.
In the case where excitation system runs well, fixed screw fastening and electricity on the wire and handle on insulated carbon brush
Connection.Electric current can be flowed through second end face from the first end face of carbon brush main body, abutted so as to reach with second end face by wire
Rotor at, to realize the normal operation under the normal operating conditions of excitation system.
When various states such as the insulation of rotor for needing monitoring excitation system, it is necessary to be carried out to rotor dynamic under cold (heat) state
The testing experiment of (quiet) state.Now, it is only necessary to one end of wire is removed at fixed screw, and by test apparatus, led
Electric current is passed through at line, electric current is reached at the rotor abutted with second end face, to be tested.Such a mode, without removing excitation
Connection busbar at the bearing of system, the grid-connected time of generator is on the one hand accelerated, on the other hand also improves generator
Operation stability.
When carrying out testing experiment with the insulated carbon brush made, the data tested out are accurate, and waveform is existing without obvious shake
As, so as to illustrate that insulated carbon brush contact when using is good, signal input and receive it is preferable, by repetition test, securely and reliably
Property is strong.
By making generator amature insulated carbon brush, avoid removing the excitation connection busbar at the bearing of excitation system,
Ensure the accuracy of correlation test test result of the generator amature when hot so that the grid-connected time advance of generator, carry
High operating efficiency.
Brief description of the drawings
Fig. 1 is the structure chart of the excitation system of one embodiment of the invention；
Fig. 2 is the structure chart of the brush carrier of one embodiment of the invention；
Fig. 3 is the structure chart of the insulated carbon brush of one embodiment of the invention.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
As shown in figure 1, its structure chart for the excitation system 10 of one embodiment of the invention.Excitation system 10 includes：Bearing
100th, rotor 200, brush carrier 300.
Rotor 200 is rotatablely installed on bearing 100, and rotor 200 has slip ring (not shown).Brush carrier 300 is arranged in bearing
100, and abutted with the slip ring of rotor 200.By the input current at brush carrier 300, electric current is input to rotor 200 by slip ring
Place.
As shown in Fig. 2 its structure chart for the brush carrier 300 of one embodiment of the invention.Brush carrier 300 includes：Carbon brush holder 310,
Insulated carbon brush 320, elastic component 330, handle 340.
As shown in figure 3, its structure chart for the insulated carbon brush 320 of one embodiment of the invention.Insulated carbon brush 320 includes：Carbon
Body of the brush 322, wire 324, insulating barrier 326.
Carbon brush main body 322 has first end face 323, second end face 325 and side 327.In the present embodiment, carbon brush main body
322 be square body structure.In other embodiments, carbon brush main body 322 can also be other structures, it is necessary to according to specific application
Environment determines to use.
One end of wire 324 is arranged in the first end face 323 of carbon brush main body 322, and is electrically connected with the inside of carbon brush main body 322
Connect.The second end face 325 of carbon brush main body 322 abuts with rotor 200.
Insulating barrier 326 and the portion envelops of side 327 of carbon brush main body 322, one end and the first end face 323 of insulating barrier 326
EDGE CONTACT, the edge of the other end of insulating barrier 326 and second end face 325, which is formed, to be spaced, on side 327 with insulating barrier 326
The position of contact forms polishing layer 328.In the present embodiment, insulating barrier 326 is epoxy resin layer.In other embodiments, absolutely
Edge layer 326 can also be other insulating materials can to electric current with insulating capacity.
In the case where the overall structure of original carbon brush main body 322 is basically unchanged, pass through the side to carbon brush main body 322
327 top layer carries out grinding process, forms polishing layer 328, to ensure that insulating barrier 326 can be fixed in carbon brush main body 322, without
Phenomenon is fallen off, while meets that insulating barrier 326 is not destroyed during unit operation experiment.
Referring to Fig. 2, multiple accepting grooves 312 are offered on carbon brush holder 310, multiple accepting grooves 312 are arranged in order.Absolutely
Edge carbon brush 320 slide be contained in accepting groove 312, on the side 327 of carbon brush main body 322 with the cell wall contact site of accepting groove 312
Divide and insulated by insulating barrier 326.The quantity of insulated carbon brush 320 is identical with the quantity of accepting groove 312 so that insulated carbon brush 320 with
Accepting groove 312 corresponds installation.
Elastic component 330 is on carbon brush holder 310, elastic component 330 and the bullet of insulated carbon brush 320 being contained in accepting groove 312
Property connection.Elastic component 330 abuts with the elasticity of insulated carbon brush 320, so as to provide elastic force for insulated carbon brush 320.In the present embodiment
In, elastic component 330 is preferably scroll spring.In other embodiments, elastic component 330 can also be other flexible portions
Part.Elastic component 330 is set, so as to increase the second end face 325 of insulated carbon brush 320 and the contact of the slip ring of rotor 200, subtracted
Small second end face 325 and the contact resistance of the slip ring of rotor 200.
Particularly, fluted 329 are opened up in first end face 323, one end of elastic component 330 is arranged in groove 329, can
So that elastic component 330 prevents from releasing the generation of phenomenon, ensure that the stabilization of work preferably with the firm connection of insulated carbon brush 320
Property.
Handle 340 is connected with carbon brush holder 310, and handle 340 is provided with fixed screw 342, the other end of wire 324 and fixation
Screw 342 is connected or disconnected.
Also referring to Fig. 2 and Fig. 3, the side 327 of the carbon brush main body 322 of insulated carbon brush 320 is wrapped by the part of insulating barrier 326
Wrap up in, at the accepting groove 312 by the carbon brush holder 310 that insulated carbon brush 320 is installed on to brush carrier 300, due to carbon brush main body 322 and carbon
Obstructed between brush holder 310 by insulating barrier 326, so as to form insulation.
In the case where excitation system 10 runs well, the wire 324 on insulated carbon brush 320 and the fixation on handle 340
Screw 342 is fastened and electrically connected.Electric current can flow through the second end by wire 324 from the first end face 323 of carbon brush main body 322
Face 325, so as to reach at the rotor 200 abutted with second end face 325, to realize under the normal operating conditions of excitation system 10
Normal operation.
When the various states such as the insulation of rotor 200 for needing monitoring excitation system 10 to rotor 200, it is necessary to carry out cold (heat)
The testing experiment of dynamic (quiet) state under state.Now, it is only necessary to one end of wire 324 is removed at fixed screw 342, and passed through
Test apparatus, electric current is passed through at wire 324, electric current is reached at the rotor 200 abutted with second end face 325, to be tested.
Such a mode, because insulating barrier 326 will insulate between carbon brush main body 322 and carbon brush holder 310, carbon brush is entered via wire 324
The electric current of main body 322 will not be reached at carbon brush holder 310, the connection busbar at bearing 100 without removing excitation system 10,
On the one hand the grid-connected time of generator is accelerated, on the other hand also improves the operation stability of generator.
When carrying out testing experiment with the insulated carbon brush 320 made, the data tested out are accurate, and waveform is without obvious shake
Phenomenon, illustrate that the contact when using of insulated carbon brush 320 is good, signal input and receive it is preferable, by repetition test, securely and reliably
Property is strong.
By making generator amature insulated carbon brush 320, avoid removing the excitation at the bearing 100 of excitation system 10 and connect
Connect busbar, it is ensured that the accuracy of correlation test test result of the generator amature when hot so that the grid-connected time of generator
In advance, operating efficiency is improved.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (1)
- A kind of 1. excitation system, it is characterised in that including：Bearing, rotor, brush carrier；The rotor is rotatablely installed on the bearing, and the rotor has slip ring；The brush carrier is arranged in the bearing, and is abutted with the slip ring of the rotor；The brush carrier includes：Carbon brush holder, insulated carbon brush, elastic component, handle；Multiple accepting grooves are offered on the carbon brush holder, multiple accepting grooves are arranged in order；The insulated carbon brush includes：Carbon brush main body, wire, insulating barrier, the carbon brush main body have first end face, second end face and Side；One end of the wire is arranged in the first end face of the carbon brush main body, and electric with the inside of the carbon brush main body Connection；The insulating barrier and the lateral parts of the carbon brush main body wrap up, one end of the insulating barrier and the first end The EDGE CONTACT in face, the edge of the other end of the insulating barrier and the second end face, which is formed, to be spaced, on the side with it is described The position of insulating barrier contact forms polishing layer；The insulated carbon brush is slided and is contained in the accepting groove, the carbon brush main body Cell wall contact portion on the side with the accepting groove is insulated by the insulating barrier；The elastic component is on the carbon brush holder, and the insulated carbon brush elastic connection with being contained in the accepting groove；The handle is connected with the carbon brush holder, and the handle is provided with fixed screw, the other end of the wire with it is described solid Determine screw connection or disconnection；The insulating barrier is epoxy resin layer；The carbon brush main body is square body structure；Opened up in the first end face fluted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410687633.4A CN104577614B (en) | 2014-11-25 | 2014-11-25 | Excitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410687633.4A CN104577614B (en) | 2014-11-25 | 2014-11-25 | Excitation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104577614A CN104577614A (en) | 2015-04-29 |
| CN104577614B true CN104577614B (en) | 2018-02-13 |
Family
ID=53093108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410687633.4A Active CN104577614B (en) | 2014-11-25 | 2014-11-25 | Excitation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104577614B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242186B (en) * | 2015-11-03 | 2018-06-01 | 南通盛泽能源科技有限公司 | A kind of generator rotor ground malfunction detection system |
| FR3083924B1 (en) * | 2018-07-10 | 2023-04-07 | Mersen France Amiens Sas | POWER TRANSFER SYSTEM BETWEEN A ROTATING ELEMENT AND A FIXED ELEMENT . |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101310420A (en) * | 2005-07-25 | 2008-11-19 | 申克碳化技术股份有限公司 | Carbon brush arrangement |
| CN101369762A (en) * | 2008-04-10 | 2009-02-18 | 王晨光 | Generator |
| CN202167743U (en) * | 2011-08-17 | 2012-03-14 | 阜新北方刷握制造厂 | Plugging quintuplet-box brush holder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2942082B2 (en) * | 1992-12-10 | 1999-08-30 | 三菱電機株式会社 | DC motor brush device |
| DE10157604A1 (en) * | 2001-11-26 | 2003-06-05 | Schunk Italia S R L | Carbon brush guide |
| CN203261171U (en) * | 2013-05-08 | 2013-10-30 | 大唐邓州生物质能热电有限责任公司 | Generator |
| CN204391469U (en) * | 2014-11-25 | 2015-06-10 | 杨显清 | Insulated carbon brush, the brush carrier containing this insulated carbon brush, the excitation system containing this brush carrier |
-
2014
- 2014-11-25 CN CN201410687633.4A patent/CN104577614B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101310420A (en) * | 2005-07-25 | 2008-11-19 | 申克碳化技术股份有限公司 | Carbon brush arrangement |
| CN101369762A (en) * | 2008-04-10 | 2009-02-18 | 王晨光 | Generator |
| CN202167743U (en) * | 2011-08-17 | 2012-03-14 | 阜新北方刷握制造厂 | Plugging quintuplet-box brush holder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104577614A (en) | 2015-04-29 |
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