CN220708261U - Carbon brush abrasion detection device of excitation system of hydraulic generator - Google Patents
Carbon brush abrasion detection device of excitation system of hydraulic generator Download PDFInfo
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- CN220708261U CN220708261U CN202322325709.6U CN202322325709U CN220708261U CN 220708261 U CN220708261 U CN 220708261U CN 202322325709 U CN202322325709 U CN 202322325709U CN 220708261 U CN220708261 U CN 220708261U
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- carbon brush
- excitation system
- support
- detection device
- spring
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 174
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 173
- 238000001514 detection method Methods 0.000 title claims abstract description 53
- 230000005284 excitation Effects 0.000 title claims abstract description 37
- 238000005299 abrasion Methods 0.000 title abstract description 78
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000010977 unit operation Methods 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000013139 quantization Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model provides a carbon brush abrasion detection device of a hydraulic generator excitation system. The carbon brush abrasion detection device of the hydro-generator excitation system comprises a carbon brush support, a spring, a limiting support and a carbon brush abrasion detection structure, wherein the limiting support is arranged on the carbon brush support in a sliding mode, two ends of the spring are respectively fixed on the carbon brush support and the limiting support, the spring can enable a carbon brush placed on the limiting support to be pressed on a slip ring of the hydro-generator excitation system, the carbon brush abrasion detection structure can detect the carbon brush abrasion amount in real time, and when the carbon brush abrasion amount reaches a preset value, the limiting support is controlled to reset and alarm. The carbon brush abrasion detection device of the excitation system of the hydraulic generator can realize automatic monitoring of the abrasion loss of the carbon brush, resets and gives a warning when the abrasion loss of the carbon brush reaches a preset value, is convenient for checking and timely replacing the carbon brush, and ensures safe and stable operation of a unit.
Description
Technical Field
The utility model relates to the technical field of carbon brushes, in particular to a carbon brush abrasion detection device for a hydraulic generator excitation system.
Background
The hydro-generator excitation system is a device for providing a direct current power supply for a generator rotor to establish a magnetic field, and aims to convey direct current to the rotating generator rotor through a fixed excitation system, and the excitation system solves the problem by arranging a carbon brush and a slip ring.
In the running process, the rotor continuously rotates, and the carbon brush is in close contact with the slip ring and continuously rubs. Because the main component of the carbon brush is graphite, the carbon brush has softer texture and larger abrasion during long-term operation; when the carbon brush is worn to a certain extent, the carbon brush needs to be replaced in time, otherwise, sparks and discharge can be generated when the carbon brush is light, and the positive and negative poles of the rotor are short-circuited when the carbon brush is heavy, so that the safe and stable operation of the unit is seriously influenced.
At present, the inspection mode of the hydroelectric power plant to the carbon brush of the excitation system of the hydraulic generator is mainly manual inspection; however, the conventional inspection method has the problems that inspection staff has different judgment standards for the abrasion loss, and the like, if the inspection staff is replaced too early, resources are wasted, and if the inspection staff is replaced too late, the operation safety of the machine set is affected.
In view of this, the present utility model has been made.
Disclosure of Invention
The utility model aims to provide a carbon brush abrasion detection device of a hydraulic generator excitation system, which can realize automatic monitoring of the abrasion loss of a carbon brush, reset and give out a warning when the abrasion loss of the carbon brush reaches a preset value, so that the carbon brush is convenient to check and replace in time, and safe and stable operation of a unit is ensured.
The utility model provides a carbon brush abrasion detection device of a hydraulic generator excitation system, which comprises a carbon brush support, a spring, a limiting support and a carbon brush abrasion detection structure, wherein the limiting support is arranged on the carbon brush support in a sliding manner, two ends of the spring are respectively fixed on the carbon brush support and the limiting support, the spring can enable a carbon brush placed on the limiting support to be pressed on a slip ring of the hydraulic generator excitation system, the carbon brush abrasion detection structure can detect the carbon brush abrasion amount in real time, and the limiting support is controlled to reset and alarm when the carbon brush abrasion amount reaches a preset value.
Further, the carbon brush abrasion detection structure detects the abrasion loss of the carbon brush in real time by detecting the displacement of the limiting support in real time.
Further, the carbon brush abrasion detection structure comprises a travel switch and a monitoring system, the travel switch is arranged on the limiting support and is electrically connected with the monitoring system, the travel switch controls the limiting support to reset when the abrasion loss of the carbon brush reaches a preset value, and meanwhile the monitoring system alarms.
Further, a spring positioning seat is arranged on the carbon brush support, and one end of the spring is fixedly arranged in the spring positioning seat.
Further, a mounting groove is formed in the limiting support, and one end of the carbon brush is placed in the mounting groove.
Further, a guide groove is formed in the carbon brush support, and the limiting support is arranged on the guide groove in a sliding mode.
Further, a limiting buckle is arranged on the limiting support, and the limiting support is arranged on the guide groove in a limiting sliding manner through the limiting buckle.
Further, a wear indication line for indicating replacement of the carbon brush is arranged on the limiting support.
Further, scale marks for displaying the abrasion loss of the carbon brush are arranged on the limiting support.
Furthermore, the carbon brush abrasion detection structure can conduct quantization statistics on the abrasion loss corresponding to the carbon brush in unit running time according to the scale marks.
The carbon brush abrasion detection device of the excitation system of the hydraulic generator is provided with the limiting support and the carbon brush abrasion detection structure, the limiting support is arranged on the carbon brush support in a sliding manner, the carbon brush abrasion detection structure can detect the carbon brush abrasion amount in real time, and when the carbon brush abrasion amount reaches a preset value, the limiting support is controlled to reset and alarm; the carbon brush abrasion detection device of the excitation system of the hydraulic generator can realize automatic monitoring of the abrasion loss of the carbon brush, resets and gives out a warning when the abrasion loss of the carbon brush reaches a preset value, is convenient for checking and timely replacement of the carbon brush, and ensures safe and stable operation of a unit.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a carbon brush wear detection device of a hydraulic generator excitation system;
fig. 2 is A-A view of fig. 1.
Reference numerals illustrate:
1: a carbon brush bracket; 2: a spring positioning seat; 3: a spring; 4: a limit bracket; 5: a limit button; 6: a carbon brush; 7: a guide groove; 8: a wear indicator line; 9: a travel switch; 10: scale marks; 11: and (5) monitoring the system.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. 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 application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms also include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1 and 2, the carbon brush abrasion detecting device for the excitation system of the hydraulic generator in this embodiment includes a carbon brush support 1, a spring 3, a limiting support 4 and a carbon brush abrasion detecting structure, the limiting support 4 is slidably disposed on the carbon brush support 1, two ends of the spring 3 are respectively fixed on the carbon brush support 1 and the limiting support 4, the spring 3 can enable a carbon brush 6 placed on the limiting support 4 to be pressed on a slip ring of the excitation system of the hydraulic generator, the carbon brush abrasion detecting structure can detect the carbon brush abrasion amount in real time and control the limiting support 4 to reset and alarm when the carbon brush abrasion amount reaches a preset value.
In the carbon brush abrasion detection device of the excitation system of the hydraulic generator, the carbon brush abrasion detection structure is mainly used for detecting the abrasion loss of the carbon brush in real time, and when the abrasion loss of the carbon brush reaches a preset value, the limiting support 4 is controlled to reset and alarm; the carbon brush abrasion amount detection mode of the carbon brush abrasion detection structure is not strictly limited, and for example, the carbon brush abrasion amount can be detected in real time by detecting the displacement of the limiting support 4 in real time.
In an initial state, the bottom end of the carbon brush 6 is arranged on the limiting support 4, the top end of the carbon brush 6 is pressed on a slip ring of the excitation system of the hydraulic generator under the action of the spring 3, and the position of the limiting support 4 is an initial position at the moment; as the carbon brush 6 is closely contacted with the slip ring and is continuously rubbed, the carbon brush 6 generates a certain abrasion loss, at the moment, the carbon brush 6 moves upwards along with the limit bracket 4 under the action of the spring 3 and is continuously pressed on the slip ring, and the upward movement displacement of the limit bracket 4 is the abrasion loss of the carbon brush; the carbon brush abrasion detection structure can obtain the displacement of the limiting support 4 by arranging related elements such as displacement detection and the like, so as to obtain the abrasion loss of the carbon brush.
In addition, the resetting and alarming modes of the limiting support 4 are not strictly limited, and resetting elements and alarming elements which are conventional in the art can be adopted. Specifically, the carbon brush abrasion detecting structure may include a travel switch 9 and a monitoring system 11, the travel switch 9 is mounted on the limit bracket 4 and is electrically connected with the monitoring system 11, the travel switch 9 controls the limit bracket 4 to reset when the abrasion loss of the carbon brush reaches a preset value, and the monitoring system 11 alarms. And a travel switch 9 is arranged at the rear end of the limit bracket 4, a pair of normally closed contacts are connected into a monitoring system 11, when the abrasion loss of the carbon brush reaches a preset value, the travel switch 9 is reset, and the monitoring system 11 alarms.
The spring 3 is arranged between the bottom of the carbon brush bracket 1 and the limit bracket 4; it will be appreciated that the spring 3 is in an initial state to handle the compressed state and has an upward spring force, and that when the carbon brush 6 wears, the spring force of the spring 3 can urge the spacing bracket 4 and the carbon brush 6 thereon upward to continue to be in close contact with the slip ring. A spring positioning seat 2 is arranged on the carbon brush support 1, and one end of a spring 3 is fixedly arranged in the spring positioning seat 2; by arranging the spring positioning seat 2, the spring 3 can be ensured to move in one direction while the carbon brush 6 is pressed, and the spring 3 is prevented from being displaced in other directions. In addition, be equipped with the mounting groove on spacing support 4, the one end of carbon brush 6 is placed in the mounting groove, has guaranteed the steadiness of carbon brush 6 in the operation in-process, and carbon brush 6 is difficult for taking place displacement and drunkenness.
It can be understood that the limiting support 4 is vertically slidably disposed on the carbon brush support 1 along the vertical direction of the carbon brush support 1, and the sliding manner of the limiting support 4 on the carbon brush support 1 is not strictly limited, so long as it is ensured that the carbon brush 6 can be uniformly pressed on the slip ring. Specifically, a guide groove 7 is arranged on the carbon brush support 1, and the limit support 4 is arranged on the guide groove 7 in a sliding manner; it will be appreciated that the guide groove 7 is provided in the middle of the carbon brush holder 1, and the limit bracket 4 can only slide within the guide groove 7. The guide groove 7 can ensure the stability of the limit bracket 4 when sliding up and down, and avoid the displacement of the limit bracket 4 in other directions to influence the close contact of the carbon brush 6 and the slip ring. Further, a limit buckle 5 is arranged on the limit bracket 4, and the limit bracket 4 is arranged on the guide groove 7 in a limit sliding manner through the limit buckle 5; in order to ensure that the limiting support 4 is not blocked in the operation process, the limiting buckle 5 can adopt an inclination angle self-adaptive structural design, so that self-adaptive adjustment can be realized in the operation process of the limiting support 4 and the carbon brush 6, and the operation stability of the carbon brush 6 is ensured.
Further, a wear indication line 8 for indicating replacement of the carbon brush 6 is arranged on the limit bracket 4; when the position of the limiting support 4 reaches the wear indication line 8 during manual inspection, the carbon brush 6 is replaced in time, and other carbon brushes 6 are comprehensively inspected. At this time, the carbon brush abrasion detection device of the excitation system of the hydraulic generator is provided with automatic monitoring of the carbon brush abrasion detection structure and manual monitoring double reference of the abrasion indication line 8, so that the reliability of abrasion detection of the carbon brush 6 is improved.
In addition, scale marks 10 for displaying the abrasion loss of the carbon brush are arranged on the limiting support 4, so that the abrasion loss of the carbon brush can be quantified conveniently. Particularly, the carbon brush abrasion detection structure can carry out quantization statistics on the abrasion loss corresponding to the carbon brush 6 in unit operation time according to the scale marks 10, so that the defects of uneven abrasion, too fast abrasion and the like of the individual carbon brush 6 can be found in time at the same time, and quantization support is provided for unit operation analysis.
The final purpose of the carbon brush abrasion detection device of the hydro-generator excitation system of the embodiment is to automatically monitor carbon brush abrasion in the operation process of the hydro-generator of the hydropower plant so as to improve the reliability of the excitation system, prescribe the uniform standard for carbon brush abrasion replacement and ensure the safe and stable operation of the unit. The detection device adopts an integral forming process, the spring 3 is fixed in the spring positioning seat 2 at the bottom of the carbon brush bracket 1 during manufacturing, and the spring 3 is ensured to press the carbon brush 6 through the spring positioning seat 2; after the detection device is manufactured, the bottom of the carbon brush 6 is placed in the mounting groove of the limit bracket 4 during field use, the carbon brush 6 is continuously worn along with the close contact of the carbon brush 6 and the slip ring, the spring 3 drives the limit bracket 4 and the carbon brush 6 on the limit bracket to continuously move upwards to be always and uniformly pressed on the slip ring when the carbon brush 6 is worn, the travel switch 9 is reset when the carbon brush wear reaches a preset value (such as the limit bracket 4 moves upwards to the wear indication line 8), and the monitoring system 11 alarms, so that the worn carbon brush 6 can be checked and replaced in time.
The carbon brush abrasion detection device of the excitation system of the hydraulic generator is provided with a limiting support 4 and a carbon brush abrasion detection structure, wherein the limiting support 4 is arranged on the carbon brush support 1 in a sliding manner, the carbon brush abrasion detection structure can detect the carbon brush abrasion loss in real time, and when the carbon brush abrasion loss reaches a preset value, the limiting support 4 is controlled to reset and alarm; the carbon brush abrasion detection device of the hydro-generator excitation system can realize automatic monitoring of the abrasion loss of the carbon brush, resets and gives a warning when the abrasion loss of the carbon brush reaches a preset value, and is convenient for checking and timely replacing of the carbon brush 6. The detection device automatically monitors the abrasion loss of the carbon brush, so that the detection reliability is improved; meanwhile, the detection device has uniform carbon brush replacement standards, resource waste caused by early carbon brush replacement is avoided, production cost is saved, the whole detection device is simple in structure, rapid and simple to install, reliable in action and capable of guaranteeing safe and stable operation of the unit.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. The utility model provides a hydro-generator excitation system carbon brush wearing and tearing detection device, a serial communication port, including carbon brush support, the spring, spacing support and carbon brush wearing and tearing detection structure, spacing support slides and sets up on the carbon brush support, the both ends of spring are fixed respectively on carbon brush support and spacing support, the spring can make the carbon brush of placing on spacing support compress tightly on hydro-generator excitation system's sliding ring, carbon brush wearing and tearing detection structure can the real-time detection carbon brush wearing and tearing volume and control spacing support resets and report to the police when the carbon brush wearing and tearing volume reaches the default.
2. The carbon brush wear detection device for an excitation system of a hydraulic generator according to claim 1, wherein the carbon brush wear detection structure detects the carbon brush wear amount in real time by detecting the displacement of the limit bracket in real time.
3. The carbon brush wear detection device of the excitation system of the hydraulic generator according to claim 1, wherein the carbon brush wear detection structure comprises a travel switch and a monitoring system, the travel switch is installed on the limit bracket and is electrically connected with the monitoring system, the travel switch controls the limit bracket to reset when the carbon brush wear amount reaches a preset value, and the monitoring system alarms.
4. The device for detecting carbon brush wear of an excitation system of a hydraulic generator according to claim 1, wherein a spring positioning seat is provided on the carbon brush holder, and one end of the spring is fixedly installed in the spring positioning seat.
5. The device for detecting carbon brush wear of an excitation system of a hydraulic generator according to claim 1, wherein a mounting groove is provided on the limiting bracket, and one end of the carbon brush is placed in the mounting groove.
6. The device for detecting carbon brush wear of an excitation system of a hydraulic generator according to claim 1, wherein a guide groove is provided on the carbon brush holder, and the limit holder is slidably provided on the guide groove.
7. The carbon brush wear detection device for the excitation system of the hydraulic generator according to claim 6, wherein a limiting buckle is arranged on the limiting bracket, and the limiting bracket is arranged on the guide groove in a limiting sliding manner through the limiting buckle.
8. The carbon brush wear detection device for an excitation system of a hydraulic generator according to claim 1, wherein a wear indication line for indicating replacement of the carbon brush is provided on the limiting bracket.
9. The excitation system carbon brush wear detection apparatus of a hydro-generator as defined in claim 1, wherein graduation marks for displaying the wear amount of the carbon brush are provided on the limiting bracket.
10. The carbon brush wear detection device for the excitation system of the hydraulic generator according to claim 9, wherein the carbon brush wear detection structure can quantitatively count the wear amount of the carbon brush corresponding to a unit operation time according to the scale line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322325709.6U CN220708261U (en) | 2023-08-28 | 2023-08-28 | Carbon brush abrasion detection device of excitation system of hydraulic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322325709.6U CN220708261U (en) | 2023-08-28 | 2023-08-28 | Carbon brush abrasion detection device of excitation system of hydraulic generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220708261U true CN220708261U (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322325709.6U Active CN220708261U (en) | 2023-08-28 | 2023-08-28 | Carbon brush abrasion detection device of excitation system of hydraulic generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220708261U (en) |
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2023
- 2023-08-28 CN CN202322325709.6U patent/CN220708261U/en active Active
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