CN216526196U - Generator carbon brush state monitoring system - Google Patents
Generator carbon brush state monitoring system Download PDFInfo
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- CN216526196U CN216526196U CN202123150336.0U CN202123150336U CN216526196U CN 216526196 U CN216526196 U CN 216526196U CN 202123150336 U CN202123150336 U CN 202123150336U CN 216526196 U CN216526196 U CN 216526196U
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- carbon brush
- module
- detection resistor
- connecting rod
- monitoring
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 85
- 238000012544 monitoring process Methods 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 claims abstract description 69
- 238000012545 processing Methods 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000005299 abrasion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 244000185238 Lophostemon confertus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model provides a generator carbon brush state monitoring system which comprises a carbon brush temperature monitoring module, a carbon brush current sensor, a carbon brush length monitoring module and a processing and transmitting module; the output ends of the carbon brush temperature monitoring module, the carbon brush current sensor and the carbon brush length monitoring module are connected to the processing and transmission module, and the processing and transmission module is connected to the monitoring host through the wireless communication module; the carbon brush length detection module comprises a base, a cover body, a connecting rod, a shaft sleeve, a first detection resistor, a second detection resistor, an electrode, a pre-tightening elastic sheet and a spring; one end of the first detection resistor is connected to a power supply, the electrode is grounded through the second detection resistor, and a common connection point between the electrode and the second detection resistor is used as the output end of the carbon brush length detection module and is connected to the input end of the processing transmission module; the wear, the temperature and the current of the carbon brush can be monitored accurately in real time and early warning is carried out.
Description
Technical Field
The utility model relates to a monitoring system, in particular to a generator carbon brush state monitoring system.
Background
The carbon brush is an important part in a brush generator or a motor and is used for transmitting energy between a fixed part and a rotating part of the generator or the motor; therefore, in order to ensure that the generator can work normally and continuously and stably, the state of the carbon brush needs to be monitored, in the prior art, although various carbon brush state detection devices are provided, the current and the temperature of the carbon brush are easy to realize, however, the length state of the carbon brush (the length of the carbon brush represents the abrasion condition of the carbon brush) is difficult to accurately measure, although various sensors are provided for detection, the carbon brush has more carbon powder in abrasion, the carbon powder has a conductive characteristic, and the carbon powder is attached to each detection device or sensor after being lifted, so that the result accuracy is low.
Therefore, in order to solve the above technical problems, it is necessary to provide a new technical means.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a system for monitoring a state of a carbon brush of a generator, which can accurately monitor wear, temperature, and current of the carbon brush in real time and perform early warning, so as to effectively avoid the influence of the carbon brush, and enable corresponding maintenance and replacement operations of the carbon brush to be performed in time, thereby providing a guarantee for stable operation of the generator.
The utility model provides a generator carbon brush state monitoring system which comprises a carbon brush temperature monitoring module, a carbon brush current sensor, a carbon brush length monitoring module and a processing and transmitting module;
the output ends of the carbon brush temperature monitoring module, the carbon brush current sensor and the carbon brush length monitoring module are connected to a processing transmission module, and the processing transmission module is connected to the monitoring host through a wireless communication module;
the carbon brush length detection module comprises a base, a cover body, a connecting rod, a shaft sleeve, a first detection resistor, a second detection resistor, an electrode, a pre-tightening elastic sheet and a spring;
the detection device comprises a base, a spring, a connecting rod, a cover body, a fixing shaft, a first detection resistor, a second detection resistor and a second detection resistor, wherein the end part of one end of the base is provided with a mounting cavity, the mounting cavity is internally provided with a mounting shaft, the spring is sleeved on the mounting shaft, the sleeve is sleeved on the mounting shaft and can slide in a reciprocating manner along the axial direction of the mounting shaft, the spring is positioned between the shaft sleeve and the side wall of the mounting cavity, the connecting rod is parallel to the axial direction of the shaft sleeve, one end of the connecting rod is fixedly connected with the shaft sleeve, the other end of the connecting rod is a free end, an early warning elastic piece is fixedly arranged at the free end of the connecting rod, the length direction of the early warning elastic piece is vertical to the connecting rod, the cover body is fixedly arranged above the mounting cavity and used for covering the mounting cavity, the fixing shaft is arranged in the cover body and is parallel to the mounting shaft, and the first detection resistor is of a cylindrical structure and sleeved on the fixing shaft;
the shaft sleeve is provided with a connecting piece with an L-shaped structure, an insulating block is fixedly arranged below a cross beam of the connecting piece, the electrode is fixedly arranged on the insulating block, and the motor is electrically connected with the first detection resistor in a contact manner;
one end of the first detection resistor is connected to a power supply, the electrode is grounded through the second detection resistor, and a common connection point between the electrode and the second detection resistor is used as an output end of the carbon brush length detection module and is connected to an input end of the processing transmission module.
Further, the cross section of connecting rod is the dovetail structure, the base upper surface is provided with the spout, the connecting rod is conformal to be embedded in the spout and the connecting rod slides in the spout under the drive of axle sleeve.
Furthermore, the lower end of the insulating block is provided with a U-shaped groove, the end surfaces of two side walls of the U-shaped groove are cambered surfaces which are matched with the outer side wall of the first detection resistor in a form-fitting manner, and the electrode is fixedly arranged in the U-shaped groove;
the outer side wall of the first detection resistor radially sinks to form a conductive groove, and the lower end of the electrode is embedded into the conductive groove and can slide along the conductive groove.
Further, the processing transmission module comprises an analog-to-digital conversion circuit, a filter circuit and a processing circuit;
the input end of the filter circuit is connected to the input ends of the carbon brush temperature monitoring module, the carbon brush current sensor and the carbon brush length detection module, the output end of the filter circuit is connected to the input end of the analog-to-digital conversion circuit, the output end of the analog-to-digital conversion circuit is connected with the input end of the processing circuit, and the processing circuit is in communication connection with the monitoring host through the wireless communication module.
Further, still include the early warning module, the early warning module includes warning light and warning light control circuit, the tie point between first monitoring resistance and second detection resistance is connected to warning light control circuit's input, and warning light control circuit's output is connected in the warning light.
The utility model has the beneficial effects that: according to the utility model, the abrasion, the temperature and the current of the carbon brush can be accurately monitored in real time and early-warned, so that the influence of the carbon powder can be effectively avoided, the corresponding maintenance and replacement operations of the carbon brush can be carried out in time, and the stable work of the generator is guaranteed.
Drawings
The utility model is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a carbon brush length monitoring module according to the present invention.
Fig. 3 is a left side view structural diagram of the early warning elastic sheet and the connecting rod in fig. 2.
Fig. 4 is a right-view structural diagram of the shaft sleeve and the insulating block.
Fig. 5 is a schematic structural diagram of the early warning module.
Detailed Description
The utility model is described in further detail below with reference to the drawings of the specification:
the utility model provides a generator carbon brush state monitoring system which comprises a carbon brush temperature monitoring module, a carbon brush current sensor, a carbon brush length monitoring module and a processing and transmitting module;
the output ends of the carbon brush temperature monitoring module, the carbon brush current sensor and the carbon brush length monitoring module are connected to a processing transmission module, and the processing transmission module is connected to the monitoring host through a wireless communication module;
the carbon brush length detection module comprises a base 14, a cover body 5, a connecting rod 4, a shaft sleeve 11, a first detection resistor 8, a second detection resistor (not shown in figure 2), an electrode, a pre-tightening elastic sheet 3 and a spring 10; the shaft sleeve 11 is of a T-shaped structure, so that the spring can be conveniently fixed;
a mounting cavity 13 is formed in one end of the base 14, a mounting shaft 12 is arranged in the mounting cavity 13, the spring 10 is sleeved outside the mounting shaft 12, the shaft sleeve is sleeved outside the mounting shaft 12 and can slide back and forth along the axial direction of the mounting shaft 12, the spring 10 is located between the shaft sleeve 11 and the side wall of the mounting cavity 13, the connecting rod 4 is parallel to the axial direction of the shaft sleeve 11, one end of the connecting rod 4 is fixedly connected with the shaft sleeve, the other end of the connecting rod 4 is a free end, the early warning elastic piece 3 is fixedly arranged at the free end of the connecting rod, the length direction of the early warning elastic piece is perpendicular to the connecting rod, the cover body 5 is fixedly arranged above the mounting cavity and used for covering the mounting cavity, a fixing shaft 9 is arranged in the cover body 5 and is parallel to the mounting shaft, and the first detection resistor 8 is of a cylindrical structure and sleeved outside the fixing shaft; in order to ensure the accuracy of the detection result, the outer side wall of the first monitoring resistor 8 is coated with insulating paint.
The shaft sleeve 11 is provided with a connecting piece 7 with an L-shaped structure, an insulating block 6 is fixedly arranged below a cross beam of the connecting piece 7, the end part of a longitudinal beam of the connecting piece 7 is fixedly connected with the outer side wall of the shaft sleeve 11, the electrode is fixedly arranged on the insulating block 6, and the motor is electrically connected with the first detection resistor in a contact manner;
one end of the first detection resistor is connected to a power supply, the electrode 16 is grounded through the second detection resistor, and a common connection point between the electrode and the second detection resistor is used as an output end of the carbon brush length detection module and is connected to an input end of the processing transmission module.
The carbon brush temperature monitoring module and the carbon brush current sensor respectively adopt the existing temperature sensor and the existing current sensor, and of course, the existing dustproof structure processing needs to be carried out on the sensors, so that the influence of carbon powder is avoided, and the existing dustproof structure is not repeated; certainly, the monitoring host can also be provided with a touch screen and an audible and visual alarm for early warning, which belongs to the prior art;
when the carbon brush is used, the early warning elastic sheet abuts against the carbon brush 1, the carbon brush is firmly and electrically connected with the slip ring under the combined action of the spring and the early warning elastic sheet, the carbon brush is long after being installed, at the moment, the spring is compressed under the action of the early warning elastic sheet, the connecting rod and the shaft sleeve, the spring is gradually reset along with the abrasion of the carbon brush, the shaft sleeve drives the connecting rod and the elastic sheet to gradually move to the left in the figure 2, the first detection circuit and the second detection circuit are connected in series to form a voltage division detection circuit, the first detection resistor, the electrode, the connecting piece and the like form the action of the sliding rheostat, and when the electrode slides, the resistance value of the first monitoring resistor changes (gradually decreases), and the change of the voltage represents the abrasion degree of the carbon brush; because the lid effect can effectively reduce the influence of carbon dust, moreover, in time a small amount of carbon dust enters into installation cavity and box body, also can not form the influence to the resistance change of first detection resistance.
The wireless communication module adopts the existing Bluetooth module, and under the structure, the wear, the temperature and the current of the carbon brush can be monitored accurately in real time and early-warning is carried out, so that the influence of the carbon brush can be effectively avoided, the corresponding maintenance and the replacement operation of the carbon brush can be carried out in time, and the stable work of the generator is guaranteed.
Of course, the base is also provided with a carbon brush box, a brush holder and other structures, which belong to the prior art, and therefore, are not shown in the drawing.
In this embodiment, the cross section of connecting rod 4 is the dovetail structure, the base upper surface is provided with spout 3, the connecting rod is conformal to be embedded in the spout and the connecting rod slides in the spout under the drive of axle sleeve, through above-mentioned structure, can ensure the stability of connecting rod motion.
In this embodiment, the lower end of the insulating block 6 is provided with a U-shaped groove 15, end surfaces of two side walls of the U-shaped groove 15 are cambered surfaces which are in conformal fit with the outer side wall of the first detection resistor 8, and the electrode is fixedly arranged in the U-shaped groove;
the outer side wall of the first detection resistor radially sinks to form a conductive groove, the lower end of the electrode 16 is embedded into the conductive groove and can slide along the conductive groove, and by means of the structure, stable electric connection between the electrode and the conductive groove can be guaranteed, so that the reliability of the whole detection result is high.
In this embodiment, the processing and transmitting module includes an analog-to-digital conversion circuit, a filter circuit, and a processing circuit;
the input end of the filter circuit is connected to the input ends of the carbon brush temperature monitoring module, the carbon brush current sensor and the carbon brush length detection module, the output end of the filter circuit is connected to the input end of the analog-to-digital conversion circuit, the output end of the analog-to-digital conversion circuit is connected with the input end of the processing circuit, the processing circuit is in communication connection with the monitoring host through the wireless communication module, the filter circuit and the analog-to-digital conversion circuit can adopt an existing multi-channel circuit structure, certainly, a single channel can also be adopted, so that the filter circuit and the analog-to-digital conversion circuit have 3 groups and respectively correspond to the current, the temperature and the length detection module, and the processing circuit is realized by adopting an existing single chip microcomputer.
In this embodiment, still include the early warning module, the early warning module includes warning light and warning light control circuit, the tie point between first monitoring resistance and second detection resistance is connected to warning light control circuit's input, and warning light control circuit's output is connected in the warning light, and wherein, the circuit principle of early warning module is as shown in fig. 5:
RD1 represents a first detection resistor, RD2 represents a second detection resistor, when the length of the carbon brush is larger than an allowed minimum length threshold value, the voltage division value of the first detection resistor and the second detection resistor is larger than a reference value of the same-phase end of the comparator U1, at the moment, the output level of the comparator U1 is output, the triode Q1 is cut off, the warning lamp LED does not work, when the carbon brush is worn and the length of the carbon brush is smaller than or equal to the allowed minimum length threshold value, the voltage division of RD1 and RD2 is equal to or larger than the reference voltage of the inverting end of the comparator U1, the comparator outputs a high level at the moment, the triode Q1 is conducted, the warning lamp LED is turned on, and warning is given.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. The utility model provides a generator carbon brush state monitoring system which characterized in that: the system comprises a carbon brush temperature monitoring module, a carbon brush current sensor, a carbon brush length monitoring module and a processing and transmitting module;
the output ends of the carbon brush temperature monitoring module, the carbon brush current sensor and the carbon brush length monitoring module are connected to a processing transmission module, and the processing transmission module is connected to the monitoring host through a wireless communication module;
the carbon brush length detection module comprises a base, a cover body, a connecting rod, a shaft sleeve, a first detection resistor, a second detection resistor, an electrode, a pre-tightening elastic sheet and a spring;
the detection device comprises a base, a spring, a connecting rod, a cover body, a fixing shaft, a first detection resistor, a second detection resistor and a second detection resistor, wherein the end part of one end of the base is provided with a mounting cavity, the mounting cavity is internally provided with a mounting shaft, the spring is sleeved on the mounting shaft, the sleeve is sleeved on the mounting shaft and can slide in a reciprocating manner along the axial direction of the mounting shaft, the spring is positioned between the shaft sleeve and the side wall of the mounting cavity, the connecting rod is parallel to the axial direction of the shaft sleeve, one end of the connecting rod is fixedly connected with the shaft sleeve, the other end of the connecting rod is a free end, an early warning elastic piece is fixedly arranged at the free end of the connecting rod, the length direction of the early warning elastic piece is vertical to the connecting rod, the cover body is fixedly arranged above the mounting cavity and used for covering the mounting cavity, the fixing shaft is arranged in the cover body and is parallel to the mounting shaft, and the first detection resistor is of a cylindrical structure and sleeved on the fixing shaft;
the shaft sleeve is provided with a connecting piece with an L-shaped structure, an insulating block is fixedly arranged below a cross beam of the connecting piece, the electrode is fixedly arranged on the insulating block, and the motor is electrically connected with the first detection resistor in a contact manner;
one end of the first detection resistor is connected to a power supply, the electrode is grounded through the second detection resistor, and a common connection point between the electrode and the second detection resistor is used as an output end of the carbon brush length detection module and is connected to an input end of the processing transmission module.
2. The system for monitoring the carbon brush state of the generator according to claim 1, characterized in that: the cross section of the connecting rod is of a dovetail structure, a sliding groove is formed in the upper surface of the base, the connecting rod is embedded into the sliding groove in a shape fitting mode, and the connecting rod slides in the sliding groove under the driving of the shaft sleeve.
3. The system for monitoring the carbon brush state of the generator according to claim 1, characterized in that: the lower end of the insulating block is provided with a U-shaped groove, the end surfaces of two side walls of the U-shaped groove are cambered surfaces which are matched with the outer side wall of the first detection resistor in a form-fitting manner, and the electrode is fixedly arranged in the U-shaped groove;
the outer side wall of the first detection resistor radially sinks to form a conductive groove, and the lower end of the electrode is embedded into the conductive groove and can slide along the conductive groove.
4. The system for monitoring the carbon brush state of the generator according to claim 1, characterized in that: the processing transmission module comprises an analog-to-digital conversion circuit, a filter circuit and a processing circuit;
the input end of the filter circuit is connected to the input ends of the carbon brush temperature monitoring module, the carbon brush current sensor and the carbon brush length detection module, the output end of the filter circuit is connected to the input end of the analog-to-digital conversion circuit, the output end of the analog-to-digital conversion circuit is connected with the input end of the processing circuit, and the processing circuit is in communication connection with the monitoring host through the wireless communication module.
5. The system for monitoring the carbon brush state of the generator according to claim 1, characterized in that: still include the early warning module, the early warning module includes warning light and warning light control circuit, the tie point between first monitoring resistance and second detection resistance is connected to the input of warning light control circuit, and the output of warning light control circuit is connected in the warning light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123150336.0U CN216526196U (en) | 2021-12-15 | 2021-12-15 | Generator carbon brush state monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123150336.0U CN216526196U (en) | 2021-12-15 | 2021-12-15 | Generator carbon brush state monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216526196U true CN216526196U (en) | 2022-05-13 |
Family
ID=81499023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123150336.0U Expired - Fee Related CN216526196U (en) | 2021-12-15 | 2021-12-15 | Generator carbon brush state monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216526196U (en) |
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2021
- 2021-12-15 CN CN202123150336.0U patent/CN216526196U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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Granted publication date: 20220513 |