CN108988584B - Generator standby carbon brush installation device and generator standby carbon brush installation method - Google Patents
Generator standby carbon brush installation device and generator standby carbon brush installation method Download PDFInfo
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- CN108988584B CN108988584B CN201811112399.7A CN201811112399A CN108988584B CN 108988584 B CN108988584 B CN 108988584B CN 201811112399 A CN201811112399 A CN 201811112399A CN 108988584 B CN108988584 B CN 108988584B
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- carbon brush
- generator
- support piece
- axial support
- radial
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 title abstract description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000002787 reinforcement Effects 0.000 description 15
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to a device and a method for installing a standby carbon brush of a generator. The generator standby carbon brush mounting device comprises a bracket, a radial support piece and an axial support piece. Wherein, the support is used for being connected with exciter stator fixed. The radial support piece is connected with the bracket, and the extending direction of the radial support piece is consistent with the radial direction of the exciter stator, and a chute is arranged on the radial support piece. The axial support piece is vertically arranged on the radial support piece and is in sliding fit with the sliding groove, so that the axial support piece can move close to or away from the generator slip ring, and the axial support piece is used for being connected with the standby carbon brush. The device for installing the standby carbon brush of the generator realizes the installation of the standby carbon brush under the condition that the generator works, ensures that the grounding protection of the rotor of the generator can continue to operate, and reduces the maintenance cost.
Description
Technical Field
The invention relates to the field of electric maintenance, in particular to a device and a method for installing a standby carbon brush of a generator.
Background
Generators are common devices in the electrical arts. The generator needs to be equipped with 3 DMR carbon brushes to monitor rotor insulation during generator operation. In particular, the rotor of the generator is a high-speed rotating component, and the injection signal is to enter the rotor winding and the large shaft through a slip ring and carbon brush device. The carbon brushes are 3 in total, namely a rotor winding negative carbon brush, a rotor winding positive carbon brush and a rotor large-shaft carbon brush from outside to inside, are arranged right below corresponding slip rings and are connected and fixed by a slip ring shaft.
In the running process of the generator, if one carbon brush fails, the insulation monitoring system of the generator rotor cannot work, and the generator is stopped when serious. Because the slip ring is 1500 revolutions per minute Zhong Gaosu rotary equipment, and only about 2mm apart from the carbon brush, personnel can not dismouting and change the carbon brush at all on line. However, if a new carbon brush is required to be installed in a halt mode, economic losses are brought to the power plant.
Disclosure of Invention
In view of the above, it is necessary to provide a generator backup carbon brush mounting apparatus and a generator backup carbon brush mounting method.
The application provides a device for mounting a standby carbon brush of a generator, which comprises the following components:
The bracket is used for being fixedly connected with the exciter stator;
The radial support piece is connected with the bracket, and the extending direction of the radial support piece is consistent with the radial direction of the exciter stator; a chute is arranged on the radial support piece;
The axial support piece is vertically arranged on the radial support piece and is in sliding fit with the sliding groove, so that the axial support piece can move close to or away from the generator slip ring, and the axial support piece is used for being connected with the standby carbon brush.
Above-mentioned generator reserve carbon brush installation device passes through the support mounting on the exciter stator to can install reserve carbon brush on axial support spare, through with axial support spare to the sliding ring slip, thereby with reserve carbon brush butt to the sliding ring on, replace the carbon brush that breaks down on the generator, and then realized installing reserve carbon brush under the condition of generator work, guaranteed that generator rotor ground connection protection can continue to operate, reduced maintenance cost.
In one embodiment, the support comprises a central tube and a plurality of struts, wherein the struts are uniformly arranged on the outer circumferential surface of the central tube along the circumferential direction.
In one embodiment, each of the struts is provided with a through hole, and a connecting piece is arranged in the through hole in a penetrating manner, and is used for penetrating into a jackscrew hole on the exciter stator.
In one embodiment, one end of the radial support member is connected with the outer peripheral surface of the central tube, a first reinforcement member is further arranged on the radial support member, one end of the first reinforcement member is connected with the radial support member, and the other end of the first reinforcement member is connected to the supporting rod.
In one embodiment, the generator backup carbon brush mounting device further includes a second reinforcing member, one end of the second reinforcing member is connected to one end of the axial support member away from the radial support member, and the other end of the second reinforcing member is disposed on the bracket.
In one embodiment, the second reinforcing member includes a reinforcing rope and a tension member, the tension member is disposed on the support, one end of the reinforcing rope is connected to one end of the axial support member away from the radial support member, and the other end of the reinforcing rope is connected to the tension member.
In one embodiment, the axial support comprises a base and a body arranged perpendicular to the base, and the base is slidably matched with the sliding groove.
In one embodiment, the base is provided with a locking hole, and a fastener is arranged in the locking hole and can lock the axial support piece on the radial support piece.
In one embodiment, the body is provided with a mounting hole, and the mounting hole is used for mounting the backup carbon brush.
The application further provides a method for installing the standby carbon brush of the generator, which comprises the following steps:
Providing the generator standby carbon brush mounting device;
fixing the bracket to the exciter stator;
A spare carbon brush is arranged on the axial support piece;
Inserting an axial support piece into the sliding groove, and moving the axial support piece towards the generator slip ring to a first distance between the standby carbon brush and the generator slip ring;
And removing the carbon brush wiring with faults, and accessing the spare carbon brush wiring.
The method for installing the standby carbon brush of the generator realizes the installation of the standby carbon brush under the condition that the generator works, ensures that the grounding protection of the generator rotor can continue to operate, and reduces the maintenance cost.
Drawings
FIG. 1 is a schematic diagram of a generator backup carbon brush mounting apparatus according to an embodiment;
FIG. 2 is a left side view of the alternate carbon brush mounting apparatus of the generator shown in FIG. 1;
FIG. 3 is a schematic view of a radial support of the generator backup carbon brush mounting apparatus shown in FIG. 1;
FIG. 4 is a schematic view of an axial support of the alternate carbon brush mounting apparatus of the generator shown in FIG. 1;
FIG. 5 is a left side view of the axial support shown in FIG. 4;
FIG. 6 is a schematic diagram illustrating an installation of a backup carbon brush installation apparatus of an embodiment;
FIG. 7 is a schematic diagram showing the final positional relationship between the generator backup carbon brush mounting apparatus and the generator slip ring shown in FIG. 6;
fig. 8 is a flowchart of a method for installing a backup carbon brush of a generator according to an embodiment.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 7, an apparatus 100 for mounting a backup carbon brush of a generator according to an embodiment includes a bracket 110, a radial support 120, and an axial support 130. The bracket 110 is used for fixedly connecting with the exciter stator 200 of the generator, so that the generator standby carbon brush installation device 100 is fixed on the exciter stator 200. Specifically, the bracket 100 may be fixedly connected to a flange surface of the exciter stator, that is, an end surface of the exciter stator perpendicular to the axial direction of the generator slip ring 300, by means of a fastener or welding.
The radial supports 120 are connected to the bracket 110, and in particular, the radial supports 120 may be fixedly connected to the bracket 110 by welding or screwing or other connection means. Further, the direction of extension of the radial support 120 coincides with the radial direction of the exciter stator. The radial support 120 is provided with a chute 121, and the extending direction of the chute 121 is consistent with the extending direction of the radial support 120.
The axial support 130 is used to connect with the backup carbon brush 310. Specifically, the axial support 130 is disposed perpendicular to the radial support 120 such that the extending direction of the axial support 130 coincides with the axial direction of the generator slip ring 300. Further, the axial support 130 is disposed in the sliding groove 121 and slidingly engages with the sliding groove 121, so that the axial support 130 can move toward or away from the generator slip ring 300, and further drive the backup carbon brush to move toward the generator slip ring 300.
The generator backup carbon brush mounting device 100 is mounted on the exciter stator 200 through the bracket 110, and the sliding groove 121 is formed in the radial support member 120, and then the axial support member 130 is arranged in the sliding groove 121, so that the axial support member can slowly approach the generator slip ring 300 when moving along the sliding groove due to the fact that the extending direction of the radial support member 120 is consistent with the radial direction of the exciter stator 200. Further, the spare carbon brush 310 is installed on the axial support member 130, and the axial support member 300 is moved towards the generator slip ring 300, so that the spare carbon brush 310 can be moved to the slip ring to replace the fault carbon brush 320 on the generator, and the spare carbon brush is installed under the condition that the generator works, so that the generator can continue to operate safely. Meanwhile, the economic loss caused by mounting the carbon brush during shutdown is avoided, and the maintenance cost is reduced.
Specifically, in one of the embodiments, the stent 110 includes a central tube 111 and a plurality of struts 112, the plurality of struts 112 being uniformly disposed on the outer circumferential surface of the central tube 111 along the circumferential direction of the central tube 111. For example, in the present embodiment, the number of the struts 112 is 4, and the 4 struts 112 are uniformly disposed on the outer circumferential surface of the central tube 111, that is, the included angle between two adjacent struts 112 is 90 degrees, so that the stent 110 has an overall X-shape. Further, an arc-shaped recess is formed at one end of each strut 112 connected to the central tube 111, and the arc-shaped recess is matched with the outer circumferential surface of the central tube 111, so that the strut 112 can be tightly connected to the outer circumferential surface of the central tube 111. Further, the struts 112 are welded to the center tube 111.
By welding the plurality of struts 112 to the central tube 112, the welding process is simplified and the alignment of each strut 112 is better controlled. It should be noted that, in another embodiment, the bracket 110 may omit the central tube 111, and directly weld one end of the plurality of struts 112 together, thereby saving material. Preferably, the central tube 111 is a steel tube, and the strut 112 is a channel steel structure, so that the bracket 110 has the characteristics of high strength, light weight and the like.
Further, each strut 112 is provided with a through hole 113, and a connecting piece (not shown) is arranged in the through hole 113 in a penetrating manner. The through hole 113 communicates with a top wire hole (not shown) of the exciter stator 300, and a connector is inserted into the hole 113 and the top wire hole of the exciter stator 300, thereby fixing the bracket 110 to the exciter stator 300. In particular, the connection may be a screw or a bolt.
Further, one end of the radial support 120 is also connected to the outer peripheral surface of the center tube 111. The radial supports 120 are further provided with first reinforcing members 140 to reinforce the stability of the radial supports 120. Specifically, the first reinforcement 140 is disposed at an end of the radial support 120 remote from the center tube 111. And one end of the first reinforcement 140 is connected to the radial support 120, and the other end of the first reinforcement 140 is connected to the strut 112. Further, the number of the first reinforcing members 140 is two, and the first reinforcing members are respectively disposed on the upper and lower sides of the radial supporting member 120, so as to respectively support and fix the upper and lower sides of the radial supporting member 120.
Specifically, in one embodiment, the generator backup carbon brush mounting apparatus 100 further includes a second reinforcement member 150, and the second reinforcement member 150 is used to strengthen the stability of the axial support member 130. Specifically, one end of the second reinforcement member 150 is connected to one end of the axial support member 130 away from the radial support member 120, and the other end of the second reinforcement member 150 is disposed on the bracket 110.
Further, the second reinforcement 150 includes a reinforcement cord 151 and a tension member 152 for tensioning the reinforcement cord 151. The tension member 152 is provided on the bracket 110, one end of the reinforcing cord 151 is connected to one end of the axial support 130 remote from the radial support 1220, and the other end of the reinforcing cord 151 is connected to the tension member 152. So that the extending direction of the axial support 130 can be always maintained in conformity with the axial direction of the engine slip ring 300 by adjusting the tightening member 151 to tighten the reinforcing cord 151. Specifically, the reinforcing cord 151 is a wire rope, the tightening member 152 is a bolt, and tightening or loosening of the wire rope is achieved by rotating the bolt.
Specifically, the axial support 130 includes a base 131 and a body 132 disposed perpendicular to the base 131. Wherein the size of the base 131 is matched with the chute 121 so that the base 131 can be inserted into the chute 121 and slidably engaged with the chute 121. Further, the base 131 is provided with a locking hole 1311, and a fastener (not shown), such as a bolt, is provided in the locking hole 1311. Threads are provided on the inner wall of the locking hole 1311. After the axial support 130 is moved into place, the axial support 130 can be locked to the radial support 120 by turning the fasteners. Specifically, the body 132 is provided with a mounting hole 133, and the mounting hole 133 is used for mounting the backup carbon brush.
Referring to fig. 8, in one embodiment, the present application further provides a method for installing a backup carbon brush of a generator, including the steps of:
s110, providing the device for mounting the standby carbon brush of the generator.
Specifically, the generator backup carbon brush mounting apparatus 100 includes a bracket 110, a radial support 120, a first reinforcement 140, an axial support 130 that has not yet been mounted to the radial support 120, a second reinforcement 150, and the like.
And S120, fixing the bracket on the exciter stator.
Specifically, the bracket 110 may be connected to the flange face of the exciter stator 200 by a connector that is threaded into the top wire bore of the exciter stator 200.
And S103, mounting a standby carbon brush on the axial support piece.
Specifically, the backup carbon brush is mounted at an end of the axial support 130 remote from the radial support 120. The cable is then secured.
S104: the axial support is inserted into the chute and moved towards the generator slip ring to a first distance from the backup carbon brush to the generator slip ring.
Specifically, in one embodiment, the axial support 130 is provided with a base 131, and the base 131 is sized to match the chute 121 such that the base 131 can be inserted into the chute 121 and slidably engage the chute 121. The axial support 130 may be moved toward the generator slip ring 300 slowly by a motor or other means to a first distance, in one embodiment 2mm, from the generator slip ring 300 by the backup carbon brush. Further, after the axial support 130 is moved into place, the axial support 130 may be locked by fasteners.
S105: and removing the carbon brush wiring with faults, and accessing the spare carbon brush wiring.
Specifically, the connection of the fault carbon brush 320 is removed, and the connection of the spare carbon brush 310 is accessed, so that the spare carbon brush 310 starts to work.
The method for installing the standby carbon brush of the generator realizes the installation of the standby carbon brush under the condition that the generator works, and ensures that the generator can continue to operate safely. Meanwhile, the economic loss caused by mounting the carbon brush during shutdown is avoided, and the maintenance cost is reduced.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. A backup carbon brush mounting apparatus for a generator, comprising:
The bracket is used for being fixedly connected with the exciter stator;
The radial support piece is connected with the bracket, and the extending direction of the radial support piece is consistent with the radial direction of the exciter stator; a chute is arranged on the radial support piece;
The axial support piece is vertically arranged on the radial support piece and can be in sliding fit with the sliding groove, so that the axial support piece can move close to or away from the generator slip ring, the axial support piece is used for connecting a standby carbon brush, and the standby carbon brush can be abutted to the generator slip ring and can be distributed with a fault carbon brush at intervals along the radial direction of the exciter stator;
The axial support piece comprises a base and a body which is arranged vertically to the base, and the base is in sliding fit with the chute; the base is provided with a locking hole, a fastener is arranged in the locking hole, and the fastener can lock the axial support piece on the radial support piece; the body is provided with a mounting hole, and the mounting hole is used for mounting the standby carbon brush.
2. The generator backup carbon brush mounting apparatus according to claim 1, wherein the bracket includes a center tube and a plurality of struts uniformly disposed on an outer peripheral surface of the center tube in a circumferential direction.
3. The backup carbon brush mounting apparatus for a generator according to claim 2, wherein each of the struts is provided with a through hole, and a connecting member is provided in the through hole in a penetrating manner, and the connecting member is provided in a jackscrew hole provided in the stator of the exciter.
4. The backup carbon brush mounting apparatus for a generator according to claim 2, wherein one end of the radial support member is connected to an outer peripheral surface of the center tube, a first reinforcing member is further provided on the radial support member, one end of the first reinforcing member is connected to the radial support member, and the other end of the first reinforcing member is connected to the strut.
5. The generator backup carbon brush mounting apparatus according to claim 1, further comprising a second reinforcing member, one end of the second reinforcing member being connected to one end of the axial support member away from the radial support member, and the other end of the second reinforcing member being provided on the bracket.
6. The generator backup carbon brush mounting apparatus according to claim 5, wherein the second reinforcing member includes a reinforcing rope and a tension member provided on the bracket, one end of the reinforcing rope is connected to one end of the axial support member away from the radial support member, and the other end of the reinforcing rope is connected to the tension member.
7. The method for installing the standby carbon brush of the generator is characterized by comprising the following steps of:
Providing a generator backup carbon brush mounting apparatus according to any one of claims 1 to 6;
fixing the bracket to the exciter stator;
A spare carbon brush is arranged on the axial support piece;
Inserting an axial support piece into the sliding groove, and moving the axial support piece towards the generator slip ring to a first distance between the standby carbon brush and the generator slip ring;
And removing the carbon brush wiring with faults, and accessing the spare carbon brush wiring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811112399.7A CN108988584B (en) | 2018-09-25 | 2018-09-25 | Generator standby carbon brush installation device and generator standby carbon brush installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811112399.7A CN108988584B (en) | 2018-09-25 | 2018-09-25 | Generator standby carbon brush installation device and generator standby carbon brush installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108988584A CN108988584A (en) | 2018-12-11 |
| CN108988584B true CN108988584B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811112399.7A Active CN108988584B (en) | 2018-09-25 | 2018-09-25 | Generator standby carbon brush installation device and generator standby carbon brush installation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108988584B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542856B (en) * | 2019-08-28 | 2021-06-22 | 福建福清核电有限公司 | Offline testing system and method for generator rotor grounding protection carbon brush device |
| CN117040170B (en) * | 2023-08-02 | 2024-03-26 | 湖北东南佳新材料有限公司 | Carbon brush holder for automobile start-stop motor and quick assembly device for carbon brush holder |
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|---|---|---|---|---|
| CN201733160U (en) * | 2010-05-11 | 2011-02-02 | 重庆宗申汽车发动机制造有限公司 | Generator unit carbon brush mounting bracket |
| CN103095058A (en) * | 2011-10-27 | 2013-05-08 | 秦政伟 | Special tool for replacement of slip ring carbon brush of generator rotor |
| CN103401119A (en) * | 2013-07-19 | 2013-11-20 | 江苏华宇碳素有限公司 | Carbon brush component and carbon brush assembly with same |
| CN105024475A (en) * | 2014-04-16 | 2015-11-04 | 瓦博泰克控股公司 | Brush holder assembly and methods for mounting and replacing brushes |
| CN108390521A (en) * | 2018-05-03 | 2018-08-10 | 大同新成新材料股份有限公司 | It is a kind of that the automatic carbon brush mounting bracket and its application method for replacing carbon brush can be achieved |
| CN208924050U (en) * | 2018-09-25 | 2019-05-31 | 中广核核电运营有限公司 | The spare carbon brush mounting device of generator |
-
2018
- 2018-09-25 CN CN201811112399.7A patent/CN108988584B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201733160U (en) * | 2010-05-11 | 2011-02-02 | 重庆宗申汽车发动机制造有限公司 | Generator unit carbon brush mounting bracket |
| CN103095058A (en) * | 2011-10-27 | 2013-05-08 | 秦政伟 | Special tool for replacement of slip ring carbon brush of generator rotor |
| CN103401119A (en) * | 2013-07-19 | 2013-11-20 | 江苏华宇碳素有限公司 | Carbon brush component and carbon brush assembly with same |
| CN105024475A (en) * | 2014-04-16 | 2015-11-04 | 瓦博泰克控股公司 | Brush holder assembly and methods for mounting and replacing brushes |
| CN108390521A (en) * | 2018-05-03 | 2018-08-10 | 大同新成新材料股份有限公司 | It is a kind of that the automatic carbon brush mounting bracket and its application method for replacing carbon brush can be achieved |
| CN208924050U (en) * | 2018-09-25 | 2019-05-31 | 中广核核电运营有限公司 | The spare carbon brush mounting device of generator |
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| CN108988584A (en) | 2018-12-11 |
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