CN204391469U - Insulated carbon brush, the brush carrier containing this insulated carbon brush, the excitation system containing this brush carrier - Google Patents
Insulated carbon brush, the brush carrier containing this insulated carbon brush, the excitation system containing this brush carrier Download PDFInfo
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- CN204391469U CN204391469U CN201420715627.0U CN201420715627U CN204391469U CN 204391469 U CN204391469 U CN 204391469U CN 201420715627 U CN201420715627 U CN 201420715627U CN 204391469 U CN204391469 U CN 204391469U
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- Prior art keywords
- carbon brush
- insulated
- main body
- face
- insulating barrier
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Abstract
A kind of excitation system, comprises bearing, rotates the rotor be located on bearing, is arranged in bearing and the brush carrier abutted with rotor.Brush carrier comprises carbon brush holder, insulated carbon brush, elastic component, handle.Wherein, insulated carbon brush comprises carbon brush main body, wire, insulating barrier.Carbon brush main body has the first end face, the second end face and side, and side is polishing layer; Wire is arranged in the first end face, and is electrically connected with carbon brush main body; Lateral parts wraps up by insulating barrier.Carbon brush holder offers accepting groove, and insulated carbon brush slides and is contained in accepting groove; Elastic component is connected with insulated carbon brush elasticity; Handle is connected with carbon brush holder, which is provided with fixed screw, and wire is connected with fixed screw or disconnects.By making excitation system rotor insulated carbon brush, the excitation of removing bearing place is avoided to connect busbar, guarantee the accuracy of the correlation test test result of generator amature when cold (heat) state, make the grid-connected time advance of generator, improve the stability of operating efficiency and unit operation.
Description
Technical field
The utility model relates to a kind of insulated carbon brush, the brush carrier containing this insulated carbon brush, the excitation system containing this brush carrier.
Background technology
In power plant, in order to monitor the various states such as generator amature insulate in generator unit stator thorax, need testing experiment generator amature being carried out to dynamic (quiet) state under cold (heat) state, as: the AC impedance under dynamic waveform method, repetition pulse method, DC resistance method, AC resistance method, heat (cold) state and power loss test etc.
Traditional experience and way need the connection busbar first removing excitation carbon brush bearing place, then just can carry out testing experiment.And when removing connection busbar and install connection busbar, on the one hand, need to expend the longer time, on the other hand, demolition, installation busbar is unfavorable for the conducting at busbar and bearing Hard link place repeatedly.Thus cause the reduction of operating efficiency, add the grid-connected time, also reduce the reliability of busbar junction simultaneously, the operation stability of unit is declined.
Utility model content
The purpose of this utility model overcomes weak point of the prior art, provides one to increase work efficiency, and improves insulated carbon brush, the brush carrier containing this insulated carbon brush, the excitation system containing this brush carrier of unit operation stability.
The purpose of this utility model is achieved through the following technical solutions:
A kind of insulated carbon brush, comprising:
Carbon brush main body, described carbon brush main body has the first end face, the second end face and side;
Wire, one end of described wire is arranged in described first end face of described carbon brush main body, and is connected with the internal electrical of described carbon brush main body;
Insulating barrier, the described lateral parts of described insulating barrier and described carbon brush main body wraps up, one end of described insulating barrier and the EDGE CONTACT of described first end face, the other end of described insulating barrier and the formation interval, edge of described second end face, the position that described side contacts with described insulating barrier forms layer of polishing.
Wherein in an embodiment, described insulating barrier is epoxy resin layer.
Wherein in an embodiment, described carbon brush main body is square body structure.
Wherein in an embodiment, described first end face offers groove.
A kind of brush carrier, comprising:
Carbon brush holder, described carbon brush holder offers multiple accepting groove, and multiple described accepting groove is arranged in order;
Above-mentioned insulated carbon brush, described insulated carbon brush slides and is contained in described accepting groove, is insulated by described insulating barrier with the cell wall contact portion of described accepting groove in the described side of described carbon brush main body;
Elastic component, described elastic component is located on described carbon brush holder, and is connected with the described insulated carbon brush elasticity be contained in described accepting groove;
Handle, described handle is connected with described carbon brush holder, and described handle is provided with fixed screw, and the other end of described wire is connected with described fixed screw or disconnects.
A kind of excitation system, comprising:
Bearing;
Rotor, described rotor turns is installed on described bearing, and described rotor has slip ring;
Above-mentioned brush carrier, described brush carrier is arranged in described bearing, and abuts with the described slip ring of described rotor.
When excitation system runs well, the wire on insulated carbon brush is fastening with the fixed screw on handle and be electrically connected.Electric current can pass through wire, from the first end surface current of carbon brush main body through the second end face, thus arrives the rotor place abutted with the second end face, with the normal operation under the normal operating conditions realizing excitation system.
When needing the various state such as insulation of the rotor monitoring excitation system, need the testing experiment moving (quiet) state rotor carried out under cold (heat) state.Now, only need one end of wire to remove from fixed screw, and by test apparatus, at wire, place passes into electric current, and electric current arrives the rotor place abutted with the second end face, to test.This kind of mode, without the need to removing the connection busbar at the bearing place of excitation system, accelerating the grid-connected time of generator on the one hand, also improving the operation stability of generator on the other hand.
When carrying out testing experiment with the insulated carbon brush made, the data tested out are accurate, and waveform is without obvious jitter phenomenon, thus the contact when using of explanation insulated carbon brush is good, and better, through repetition test, security reliability is strong for signal input and reception.
By making generator amature insulated carbon brush, avoiding the excitation at the bearing place of removing excitation system to connect busbar, guaranteeing the accuracy of the correlation test test result of generator amature when hot, make the grid-connected time advance of generator, improve operating efficiency.
Accompanying drawing explanation
Fig. 1 is the structure chart of the excitation system of the utility model one embodiment;
Fig. 2 is the structure chart of the brush carrier of the utility model one embodiment;
Fig. 3 is the structure chart of the insulated carbon brush of the utility model one embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
As shown in Figure 1, it is the structure chart of the excitation system 10 of the utility model one embodiment.Excitation system 10 comprises: bearing 100, rotor 200, brush carrier 300.
Rotor 200 rotates and is installed on bearing 100, and rotor 200 has slip ring (not shown).Brush carrier 300 is arranged in bearing 100, and abuts with the slip ring of rotor 200.By at brush carrier 300 place input current, electric current is input to rotor 200 place through slip ring.
As shown in Figure 2, it is the structure chart of the brush carrier 300 of the utility model one embodiment.Brush carrier 300 comprises: carbon brush holder 310, insulated carbon brush 320, elastic component 330, handle 340.
As shown in Figure 3, it is the structure chart of the insulated carbon brush 320 of the utility model one embodiment.Insulated carbon brush 320 comprises: carbon brush main body 322, wire 324, insulating barrier 326.
Carbon brush main body 322 has the first end face 323, second end face 325 and side 327.In the present embodiment, carbon brush main body 322 is square body structure.In other embodiments, carbon brush main body 322 can also be other structure, needs to determine to use according to concrete applied environment.
One end of wire 324 is arranged in the first end face 323 of carbon brush main body 322, and is connected with the internal electrical of carbon brush main body 322.Second end face 325 of carbon brush main body 322 abuts with rotor 200.
Side 327 portion envelops of insulating barrier 326 and carbon brush main body 322, one end of insulating barrier 326 and the EDGE CONTACT of the first end face 323, the other end of insulating barrier 326 and the formation interval, edge of the second end face 325, the position that side 327 contacts with insulating barrier 326 forms layer 328 of polishing.In the present embodiment, insulating barrier 326 is epoxy resin layer.In other embodiments, insulating barrier 326 can also can have the insulating material of insulating capacity for other to electric current.
When the overall structure of original carbon brush main body 322 is substantially constant, grinding process is carried out by the top layer of the side 327 to carbon brush main body 322, form polishing layer 328, to guarantee that insulating barrier 326 can be fixed in carbon brush main body 322, and there is not obscission, meet insulating barrier 326 when unit operation is tested simultaneously and be not destroyed.
Please again consult Fig. 2, carbon brush holder 310 offers multiple accepting groove 312, multiple accepting groove 312 is arranged in order.Insulated carbon brush 320 slides and is contained in accepting groove 312, is insulated by insulating barrier 326 with the cell wall contact portion of accepting groove 312 in the side 327 of carbon brush main body 322.The quantity of insulated carbon brush 320 is identical with the quantity of accepting groove 312, installs to make insulated carbon brush 320 and accepting groove 312 one_to_one corresponding.
Elastic component 330 is located on carbon brush holder 310, and elastic component 330 is connected with insulated carbon brush 320 elasticity be contained in accepting groove 312.Elastic component 330 abuts with insulated carbon brush 320 elasticity, thus provides elastic force for insulated carbon brush 320.In the present embodiment, elastic component 330 is preferably scroll spring.In other embodiments, elastic component 330 can also have flexible parts for other.Elastic component 330 is set, thus increases the second end face 325 of insulated carbon brush 320 and the contact of the slip ring of rotor 200, reduce the contact resistance of the slip ring of the second end face 325 and rotor 200.
Especially, the first end face 323 offers groove 329, one end of elastic component 330 is arranged in groove 329, and elastic component 330 can be made better firmly to be connected with insulated carbon brush 320, and the generation of the phenomenon that prevents from getting loose, ensure that the stability of work.
Handle 340 is connected with carbon brush holder 310, and handle 340 is provided with fixed screw 342, and the other end of wire 324 is connected with fixed screw 342 or disconnects.
See also Fig. 2 and Fig. 3, the side 327 of the carbon brush main body 322 of insulated carbon brush 320 is by insulating barrier 326 portion envelops, by insulated carbon brush 320 being installed on accepting groove 312 place of the carbon brush holder 310 of brush carrier 300, owing to being intercepted by insulating barrier 326 between carbon brush main body 322 and carbon brush holder 310, thus form insulation.
When excitation system 10 runs well, the wire 324 on insulated carbon brush 320 is fastening with the fixed screw 342 on handle 340 and be electrically connected.Electric current can pass through wire 324, flows through the second end face 325 from the first end face 323 of carbon brush main body 322, thus arrives rotor 200 place that abuts with the second end face 325, with the normal operation under the normal operating conditions realizing excitation system 10.
When needing the various state such as insulation of the rotor 200 monitoring excitation system 10, need the testing experiment moving (quiet) state rotor 200 carried out under cold (heat) state.Now, only need one end of wire 324 to remove from fixed screw 342, and by test apparatus, at wire 324, place passes into electric current, and electric current arrives rotor 200 place abutted with the second end face 325, to test.This kind of mode, because insulating barrier 326 insulate between carbon brush main body 322 and carbon brush holder 310, the electric current entering into carbon brush main body 322 via wire 324 can not arrive carbon brush holder 310 place, thus without the need to the connection busbar at bearing 100 place of removing excitation system 10, accelerate the grid-connected time of generator on the one hand, also improve the operation stability of generator on the other hand.
When carrying out testing experiment with the insulated carbon brush 320 made, the data tested out are accurate, and waveform is without obvious jitter phenomenon, and illustrate that insulated carbon brush 320 contact when using is good, signal inputs and receives better, and through repetition test, security reliability is strong.
By making generator amature insulated carbon brush 320, the excitation at bearing 100 place of removing excitation system 10 is avoided to connect busbar, guarantee the accuracy of the correlation test test result of generator amature when hot, make the grid-connected time advance of generator, improve operating efficiency.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (6)
1. an insulated carbon brush, is characterized in that, comprising:
Carbon brush main body, described carbon brush main body has the first end face, the second end face and side;
Wire, one end of described wire is arranged in described first end face of described carbon brush main body, and is connected with the internal electrical of described carbon brush main body;
Insulating barrier, the described lateral parts of described insulating barrier and described carbon brush main body wraps up, one end of described insulating barrier and the EDGE CONTACT of described first end face, the other end of described insulating barrier and the formation interval, edge of described second end face, the position that described side contacts with described insulating barrier forms layer of polishing.
2. insulated carbon brush according to claim 1, is characterized in that, described insulating barrier is epoxy resin layer.
3. insulated carbon brush according to claim 1, is characterized in that, described carbon brush main body is square body structure.
4. insulated carbon brush according to claim 1, is characterized in that, described first end face offers groove.
5. a brush carrier, is characterized in that, comprising:
Carbon brush holder, described carbon brush holder offers multiple accepting groove, and multiple described accepting groove is arranged in order;
Insulated carbon brush in Claims 1 to 4 described in any one, described insulated carbon brush slides and is contained in described accepting groove, is insulated by described insulating barrier with the cell wall contact portion of described accepting groove in the described side of described carbon brush main body;
Elastic component, described elastic component is located on described carbon brush holder, and is connected with the described insulated carbon brush elasticity be contained in described accepting groove;
Handle, described handle is connected with described carbon brush holder, and described handle is provided with fixed screw, and the other end of described wire is connected with described fixed screw or disconnects.
6. an excitation system, is characterized in that, comprising:
Bearing;
Rotor, described rotor turns is installed on described bearing, and described rotor has slip ring;
Brush carrier according to claim 5, described brush carrier is arranged in described bearing, and abuts with the described slip ring of described rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420715627.0U CN204391469U (en) | 2014-11-25 | 2014-11-25 | Insulated carbon brush, the brush carrier containing this insulated carbon brush, the excitation system containing this brush carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420715627.0U CN204391469U (en) | 2014-11-25 | 2014-11-25 | Insulated carbon brush, the brush carrier containing this insulated carbon brush, the excitation system containing this brush carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204391469U true CN204391469U (en) | 2015-06-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420715627.0U Expired - Fee Related CN204391469U (en) | 2014-11-25 | 2014-11-25 | Insulated carbon brush, the brush carrier containing this insulated carbon brush, the excitation system containing this brush carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204391469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577614A (en) * | 2014-11-25 | 2015-04-29 | 杨显清 | Insulated carbon brush, bush holder comprising insulated carbon brush and excitation system comprising brush holder |
-
2014
- 2014-11-25 CN CN201420715627.0U patent/CN204391469U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577614A (en) * | 2014-11-25 | 2015-04-29 | 杨显清 | Insulated carbon brush, bush holder comprising insulated carbon brush and excitation system comprising brush holder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20171125 |