CN219737705U - Generator carbon brush current and slip ring temperature on-line monitoring system - Google Patents
Generator carbon brush current and slip ring temperature on-line monitoring system Download PDFInfo
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- CN219737705U CN219737705U CN202320435499.3U CN202320435499U CN219737705U CN 219737705 U CN219737705 U CN 219737705U CN 202320435499 U CN202320435499 U CN 202320435499U CN 219737705 U CN219737705 U CN 219737705U
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- slip ring
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 56
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model provides an on-line monitoring system for carbon brush current and slip ring temperature of a generator, which comprises a current acquisition module, a temperature acquisition module, a control module, a communication module and a warning module, wherein the current acquisition module and the temperature acquisition module are respectively used for acquiring the carbon brush current and the slip ring temperature in real time, the control module is used for converting analog signals into numerical value signals, the warning module can monitor the running state of the current and the temperature in real time according to the comparison of the numerical value signals and a built-in threshold value, and the warning module can give an alarm in time when the current or the temperature is abnormal.
Description
Technical Field
The utility model relates to the technical field of power engineering, in particular to an on-line monitoring system for carbon brush current and slip ring temperature of a generator.
Background
The carbon brush of the generator is a device for transmitting energy or signals between a fixed part and a rotating part of the generator, exciting current of the generator is transmitted to an exciting winding of the generator by the carbon brush and a collecting ring, and if the carbon brush of the generator set is maintained and used improperly, accident load reduction and even shutdown are caused. For a long time, the shutdown accident caused by the carbon brush or rotor collecting ring fault causes great economic loss for enterprises. Therefore, monitoring the maintenance and use state of the carbon brush is a problem to be solved.
According to the fault statistics of the generator, the carbon brush fault is a multiple fault, so that the carbon brush fault has multiple factors such as electromagnetism, machinery, chemistry and the like, and at present, whether the carbon brush operates normally is judged only by adopting a current clamp meter to periodically detect and measure carbon brush current, but the carbon brush state cannot be monitored in time by the current clamp meter to periodically monitor, the number of carbon brushes is more, the current clamp meter can only measure one carbon brush at a time, the time consumption is long, the manual requirement is large, and the measurement is inconvenient.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides an on-line monitoring system for the carbon brush current and the slip ring temperature of a generator, which comprises the following technical scheme:
the utility model provides a generator carbon brush electric current and sliding ring temperature on-line monitoring system, includes current acquisition module, temperature acquisition module, control module, communication module, warning module and display module, current acquisition module output and temperature acquisition module output all are connected with control module input electricity, the control module output with communication module input electricity is connected, wherein:
the current acquisition module is a magnetic balance type current sensor which is connected with the carbon brush holders of the generator one by one through a quick connector and used for measuring carbon brush current in real time; the temperature acquisition module is an infrared temperature measurement sensor which is used for measuring the temperature of the slip ring in real time; the control module is an embedded microcontroller and is used for reading the carbon brush current and the slip ring temperature, converting the carbon brush current and the slip ring temperature into numerical value signals and outputting the numerical value signals to the warning module through the communication module; and a threshold value is arranged in the warning module, and when the numerical value signal exceeds the threshold value, an early warning signal is transmitted to the display module.
Preferably, the quick connector comprises a male connector and a female connector which are in butt joint, wherein the male connector is electrically connected with the current acquisition module through positive and negative poles of the male connector, the female connector is electrically connected with a carbon brush holder of the generator through positive and negative poles of the female connector, and the female connectors are connected in parallel.
Preferably, the on-line monitoring system for the carbon brush current and the slip ring temperature of the generator further comprises supporting frames symmetrically arranged on two sides of the generator, guide rails are arranged on the supporting frames, and the infrared temperature measuring sensor is connected to the supporting frames in a sliding mode.
Preferably, the communication module is any one of a WiFi communication module, a ZigBee communication module or a bluetooth communication module.
Preferably, the communication module is any one of an RS-485 communication module or an M-Bus communication module.
Preferably, the generator carbon brush current and slip ring temperature on-line monitoring system further comprises a power module, wherein the power module is any one or combination of more than two of a voltage conversion circuit, a power conversion chip and a battery, and the voltage conversion circuit and the voltage conversion chip are used for converting externally input voltage into stable on-board voltage.
Preferably, the display module is a touch screen, and the numerical value signal is obtained from the control module through the communication module and displayed, and the early warning signal is obtained from the warning module through the communication module and displayed.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model relates to an on-line monitoring system for carbon brush current and slip ring temperature of a generator, which comprises a current acquisition module, a temperature acquisition module, a control module, a communication module and a warning module, wherein the current acquisition module and the temperature acquisition module are respectively used for acquiring the carbon brush current and the slip ring temperature in real time, so that potential safety hazards existing in the process of contacting rotating equipment in the process of measuring the carbon brush temperature and the current in an excitation chamber by an maintainer are simplified; the control module is used for converting the analog signals into the numerical value signals, the warning module can monitor the running states of the current and the temperature in real time according to the comparison between the numerical value signals and the built-in threshold value, and the warning module can give an alarm in time when the current or the temperature is abnormal, so that an operator can inform an maintainer to go to the field in time for processing, and accidents are avoided, and the unit is not stopped; the system also comprises a display module, and the data of the running process of the equipment can be visually observed by directly displaying the numerical value signals, so that the working intensity of field maintenance personnel is reduced, and the daily maintenance time and the labor cost are saved.
Drawings
FIG. 1 is a flow chart of an embodiment of the present utility model;
FIG. 2 is a diagram showing a connection between a current collection module and a generator according to an embodiment of the present utility model;
reference numerals:
1-a magnetic balance type current sensor; 2-quick connector.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only 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.
The utility model provides the following technical scheme: the utility model provides a generator carbon brush electric current and slip ring temperature on-line monitoring system, includes current acquisition module, temperature acquisition module, control module, communication module, warning module and display module.
As the Hall voltage changes along with the change of the magnetic field intensity, when the carbon brush current is larger, the magnetic field is stronger, and the Hall voltage value is higher; when the carbon brush current is smaller, the magnetic field is weaker, and the Hall voltage value is lower, so in the embodiment, the current acquisition module adopts a magnetic balance type current sensor, also called an integrated Hall current sensor, the input end of the current acquisition module is connected with the brush holder of the generator one by one through a quick connector, the output end of the current acquisition module is electrically connected with the input end of the control module for measuring the carbon brush current in real time, the integrated Hall current sensor is convenient to install, only an original piece of square original paper is needed to be added, the original shape of the brush holder for storing the carbon brush is guaranteed to the maximum extent, the running of a machine set is not influenced, and the temperature drift is small and linearity is good.
Preferably, the quick connector comprises a male connector and a female connector which are in butt joint, in the embodiment, the male connector is electrically connected with the current acquisition module through positive and negative poles of the male connector, the female connector is electrically connected with a brush holder of a carbon brush of the generator through positive and negative poles of the female connector, 12 carbon brushes of the positive electrode are one path, 12 carbon brushes of the negative electrode are one path, the positive electrode and the negative electrode cannot be mutually influenced, the female connectors are connected in parallel, and one of the quick connectors has a problem and cannot influence other connectors; before the overhaul of the generator is disassembled or when the carbon brush needs to be replaced, the corresponding male connector is only required to be disconnected, and the connection mode ensures that the disconnection does not affect the operation of other carbon brushes when the overhaul of the generator is performed or the carbon brush needs to be replaced, so that the stability of the whole structure of the brush is ensured, the reliable operation of the unit is ensured, and the safety is improved.
The temperature acquisition module is a GTM-3000 infrared temperature measurement sensor, and a built-in optical system and a photoelectric detector collect target infrared radiation energy in a field of view, so that the infrared radiation energy is focused on the photoelectric detector and converted into corresponding electric signals, and the output ends of the temperature acquisition module are respectively and electrically connected with the input end of the control module and are used for measuring the temperature of the slip ring in real time;
preferably, the on-line monitoring system for the carbon brush current and the slip ring temperature of the generator further comprises supporting frames symmetrically arranged on two sides of the generator, guide rails are arranged on the supporting frames, the infrared temperature measuring sensor is in sliding connection with the supporting frames through the guide rails to perform free movement, the symmetrically arranged infrared sensor capable of freely moving can scan the temperature of the whole slip ring at any time, one side of the symmetrically arranged infrared sensor is used for measuring the positive slip ring, the other side of the symmetrically arranged infrared sensor is used for measuring the negative slip ring, and the measured data are more comprehensive.
The control module is a GTM-SEN embedded microcontroller and is used for reading carbon brush current and slip ring temperature, converting the carbon brush current and slip ring temperature into numerical value signals and outputting the numerical value signals to the warning module through the communication module;
the warning module is specifically a GTM-SEN embedded microcontroller, a threshold value is arranged in the warning module, and when the digital signal exceeds the threshold value, an early warning signal is sent to the display module.
Preferably, the communication module may be a wireless communication module or a wired communication module, and if the communication module is a wireless module, the communication module is specifically any one of a WiFi communication module, a ZigBee communication module or a bluetooth communication module; if the communication module is a wired communication module, the communication module is specifically any one of an RS-485 communication module or an M-Bus communication module. In this embodiment, the communication module is an RS-485 communication module, and signals are transmitted to the control module through a pair of 485 communication lines and a pair of power lines, so that electromagnetic interference of field devices is reduced to the greatest extent, and measurement data is more accurate.
Preferably, the generator carbon brush current and slip ring temperature on-line monitoring system further comprises a power module, wherein the power module is any one or combination of more than two of a voltage conversion circuit, a power conversion chip and a battery, and the voltage conversion circuit and the voltage conversion chip are used for converting externally input voltage into stable on-board voltage.
Preferably, the display module is a touch screen, and the numerical value signal is obtained from the control module through the communication module and displayed, and the early warning signal is obtained from the warning module through the communication module and displayed.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (7)
1. The utility model provides a generator carbon brush electric current and sliding ring temperature on-line monitoring system which characterized in that, including current acquisition module, temperature acquisition module, control module, communication module, warning module and display module, current acquisition module output and temperature acquisition module output all are connected with control module input electricity, the control module output with communication module input electricity is connected, wherein:
the current acquisition module is a magnetic balance type current sensor which is connected with the carbon brush holders of the generator one by one through a quick connector and used for measuring carbon brush current in real time; the temperature acquisition module is an infrared temperature measurement sensor which is used for measuring the temperature of the slip ring in real time; the control module is an embedded microcontroller and is used for reading the carbon brush current and the slip ring temperature, converting the carbon brush current and the slip ring temperature into numerical value signals and outputting the numerical value signals to the warning module through the communication module; and a threshold value is arranged in the warning module, and when the numerical value signal exceeds the threshold value, an early warning signal is transmitted to the display module.
2. The system for on-line monitoring of carbon brush current and slip ring temperature of a generator according to claim 1, wherein the quick connector comprises a butt joint male connector and a butt joint female connector, wherein the male connector is electrically connected with the current collecting module through positive and negative poles of the male connector, the female connector is electrically connected with the carbon brush holder of the generator through positive and negative poles of the female connector, and the female connectors are connected in parallel.
3. The system for on-line monitoring of carbon brush current and slip ring temperature of a generator according to claim 1, further comprising supporting frames symmetrically arranged at two sides of the generator, wherein guide rails are arranged on the supporting frames, and the infrared temperature measuring sensor is slidably connected to the supporting frames.
4. The system for on-line monitoring of carbon brush current and slip ring temperature of generator according to claim 1, wherein the communication module is any one of a WiFi communication module, a ZigBee communication module, or a bluetooth communication module.
5. The system for on-line monitoring of carbon brush current and slip ring temperature of generator according to claim 1, wherein the communication module is any one of an RS-485 communication module and an M-Bus communication module.
6. The system for on-line monitoring of carbon brush current and slip ring temperature of a generator according to claim 1, further comprising a power module, wherein the power module is any one or a combination of two or more of a voltage conversion circuit, a power conversion chip and a battery, and the voltage conversion circuit and the voltage conversion chip are used for converting externally input voltage into stable on-board voltage.
7. The system for on-line monitoring of carbon brush current and slip ring temperature of generator according to claim 1, wherein the display module is a touch screen, and the numerical value signal is obtained from the control module through the communication module and displayed, and the early warning signal is obtained from the warning module through the communication module and displayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320435499.3U CN219737705U (en) | 2023-03-09 | 2023-03-09 | Generator carbon brush current and slip ring temperature on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320435499.3U CN219737705U (en) | 2023-03-09 | 2023-03-09 | Generator carbon brush current and slip ring temperature on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219737705U true CN219737705U (en) | 2023-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320435499.3U Active CN219737705U (en) | 2023-03-09 | 2023-03-09 | Generator carbon brush current and slip ring temperature on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219737705U (en) |
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2023
- 2023-03-09 CN CN202320435499.3U patent/CN219737705U/en active Active
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