CN215297593U - Generator carbon brush on-line monitoring system - Google Patents

Abstract

The utility model discloses an on-line monitoring system for a carbon brush of a generator, which comprises a plurality of information acquisition modules and a monitoring terminal in wireless communication connection with the information acquisition modules, wherein the information acquisition modules comprise a temperature sensor for acquiring temperature information of the carbon brush of the generator, a current sensor for detecting current of the carbon brush of the generator, a microprocessor electrically connected with the temperature sensor and the current sensor, a sub wireless communication module electrically connected with the microprocessor, one or more wireless transceivers arranged in the area where one or more generators to be detected are positioned and wirelessly connected with the sub wireless communication module for receiving monitoring data sent by the wireless communication module, and a communication gateway in wired communication connection with the wireless transceivers, the utility model can simultaneously monitor the temperature and the running state of a plurality of carbon brushes of generators in different areas on line, the monitoring precision is high, reduces artifical tour intensity of labour.

Description

Generator carbon brush on-line monitoring system

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of generator monitoring, especially generator carbon brush on-line monitoring system's technical field.

[ background of the invention ]

The carbon brush and the slip ring are equipment for the dynamic and static contact and energy exchange of the generator and are important components of the excitation system of the generator. However, overheating often occurs during operation for many reasons, which seriously jeopardizes the safe operation of the generator. In order to ensure the safe and stable operation of a unit, a power plant has strict regulations on the maintenance of a standard carbon brush, the temperature measurement of the carbon brush is an important item in the daily maintenance of the carbon brush, the temperature of the carbon brush is generally measured regularly by an infrared thermometer, the working environment of carbon brush equipment is influenced by various factors such as dust, the infrared thermometer cannot obtain reliable temperature data, the inspection time interval is long, the real-time online monitoring cannot be realized, and the fault cannot be found in real time.

The normal operation temperature of the carbon brush is generally 50-80 ℃ (about 40 ℃ higher than the ambient temperature), the current distribution of the carbon brush is relatively balanced as a whole, and the working current of each carbon brush is 20-100A. The pressure of the brush holder spring is uniform, the carbon brush moves freely and the phenomenon of vibration and jamming does not occur. The heat generated in the running process of the carbon brush and the collector ring is taken away by the ventilation system, namely, the heat generation and the heat dissipation are basically balanced. Under the normal operation state, when the load increases the current and increases or the individual carbon brush working condition becomes poor, the temperature will increase slightly for a short time, and the system can maintain the balance or reach a new balance state. However, if the carbon brush is shortened, the pressure of the brush holder spring is reduced, the contact resistance is increased, and the running condition of the carbon brush is deteriorated, when the working current is increased and the temperature is changed, the balance capability of the system is reduced, and the temperature of part of the carbon brush is increased, so that the temperature of the whole system is increased, and sometimes even the whole system reaches an uncontrollable state. The temperature of the carbon brush and the collector ring is up to more than 100 ℃ during heating, and is up to 200-300 ℃ when the temperature is the most serious. At the moment, the working state of the carbon brush is worse and worse, the current distribution of the carbon brush is very uneven, the current of a few carbon brushes reaches 300A, and the current of other carbon brushes is close to 0. Abnormal jumping or jamming of a large number of carbon brushes and a large number of sparks occur, and the brush braid is burned off or stripped; the friction sound of the carbon brush and the collecting ring becomes sharp and harsh until the collecting ring is ignited, so that the monitoring significance of the temperature of the carbon brush is very important.

To this, chinese utility model patent that patent number is CN205748480U provides a generator carbon brush electric current and temperature on-line monitoring and early warning device, including main control equipment, display output module and at least one carbon brush monitoring unit, carbon brush monitoring unit includes microcontroller, analog-to-digital conversion unit, at least one current sensor and at least one temperature sensor, microcontroller, display output module links to each other with main control equipment respectively, the last warning relay interface that is equipped with of main control equipment, current sensor establishes ties on the return circuit of generator carbon brush, temperature sensor installs in the generator and contacts with the carbon brush, current sensor, temperature sensor's output links to each other through analog-to-digital conversion unit and microcontroller's input respectively. The utility model discloses a can realize the electric current and the temperature of real-time collection generator carbon brush, realize the real-time on-line monitoring of generator carbon brush electric current and temperature and show, for generator carbon brush detects and provides support with the diagnosis, can realize reporting to the police when electric current or temperature are unusual and export and upload, use manpower sparingly in a large number and patrol and examine the time cost. However, the carbon brush monitoring unit and the main control equipment are connected through wires, so that the connection is inconvenient, the installation is inconvenient, the distance between the main control equipment and the carbon brush monitoring unit cannot be too far, a plurality of different areas cannot be monitored simultaneously, the monitoring is only carried out through the current sensor and the temperature sensor, and the monitoring precision is also relatively general.

[ Utility model ] content

The utility model discloses an aim at solving the problem among the prior art, provide a generator carbon brush on-line monitoring system, can be simultaneously to many generator carbon brush temperatures and the running state on-line monitoring of different regions, the monitoring precision is high, reduces artifical intensity of labour that tours.

In order to achieve the above object, the utility model provides an on-line monitoring system for a generator carbon brush, which comprises a plurality of information acquisition modules arranged on different generators, a monitoring terminal in wireless communication connection with the information acquisition modules, wherein each information acquisition module comprises a temperature sensor for acquiring temperature information of the generator carbon brush, a current sensor for detecting current of the generator carbon brush, a microprocessor electrically connected with the temperature sensor and the current sensor, a sub wireless communication module electrically connected with the microprocessor, one or more wireless transceivers arranged in an area where one or more generators to be detected are located and wirelessly connected with the sub wireless communication module in the area for receiving monitoring data sent by the wireless communication module, and a communication gateway in wired communication connection with the wireless transceivers, the information acquisition module further comprises a power module for supplying power to the information acquisition module, the communication gateway is accessed to a communication network and is in data communication connection with the monitoring terminal through the communication network, and the monitoring terminal comprises a central processing unit and a display panel.

Preferably, the monitoring terminal further comprises a mobile phone end, and the monitoring terminal comprises a dialing module matched with the mobile phone end.

Preferably, the information acquisition module comprises a vibration sensor which is arranged on the generator and used for monitoring vibration signals, and the vibration sensor is in data communication connection with the microprocessor.

Preferably, the information acquisition module comprises a positioning module arranged on the generator and used for positioning the position of the generator.

Preferably, the information acquisition module comprises a sub-alarm, and the microprocessor is in control connection with the sub-alarm.

Preferably, the monitoring terminal comprises a monitoring terminal alarm electrically connected with the central processing unit.

Preferably, the information acquisition module comprises an information acquisition storage module in data communication connection with the microprocessor, and the monitoring terminal comprises a monitoring terminal storage module in data communication connection with the central processing unit.

Preferably, a data preprocessing module is arranged between the temperature sensor and the microprocessor and comprises an amplifying circuit and a filter circuit, wherein the amplifying circuit is in communication connection with the temperature sensor and the output end of the current sensor, and the filter circuit is arranged between the amplifying circuit and the microprocessor.

Preferably, the system further comprises an infrared thermal imager which is arranged in the area where one or more tested generators are located and is in wireless connection with the wireless receiver in the area where the generators are located for monitoring infrared signals in the area where the generators are located.

Preferably, the information acquisition module comprises a smoke sensor, and the microprocessor is in control connection with the smoke sensor.

The utility model discloses generator carbon brush on-line monitoring system's beneficial effect: the utility model discloses a set up the operational aspect that information acquisition module is used for monitoring on-the-spot generator carbon brush, through monitor terminal remote observation, the staff need not to observe on the spot, and through setting up a plurality of information acquisition modules, the generator carbon brush operation conditions of the different positions of multiunit can be observed once, the manpower is saved, the efficiency is improved, through setting up sub wireless communication module and wireless transceiver wireless connection in with information acquisition module, a wireless transceiver can connect a plurality of information acquisition modules in the region of place simultaneously, the cost is saved, information transmission is more convenient, it is more convenient to install, need not to set up the signal line in addition, set up a plurality of wireless transceivers in different regions, and transmit information to monitor terminal through communication network, can monitor a plurality of different regions simultaneously, the monitoring range is bigger; set up temperature sensor and be used for gathering carbon brush temperature information, avoid the carbon brush high temperature to lead to damaging, set up current sensor and be used for monitoring generator current signal to judge whether the generator normally works, set up microprocessor and be used for on-the-spot preprocessing information, tentatively judge whether there is the high scheduling problem of temperature in the carbon brush, information acquisition module sets up solitary power module, avoids leading to stopping the monitoring owing to prevent having a power failure.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is the structure schematic diagram of the carbon brush on-line monitoring system of the generator of the utility model.

In the figure: the system comprises an information acquisition module, a 2-monitoring terminal, a 3-mobile phone end, a 4-wireless transceiver, a 5-communication gateway, a 6-infrared thermal imager, a 11-temperature sensor, a 12-current sensor, a 13-microprocessor, a 14-sub wireless communication module, a 15-vibration sensor, a 16-positioning module, a 17-sub alarm, an 18-information acquisition and storage module, a 19-amplification circuit, a 20-filter circuit, a 21-smoke sensor, a 22-central processing unit, a 23-display panel, a 24-dialing module, a 25-monitoring terminal alarm, a 26-monitoring terminal storage module and a 111-power supply module.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only illustrative and not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the present concepts.

In the present description, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the present description, "plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the present description, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1, the utility model discloses generator carbon brush on-line monitoring system, including a plurality of information acquisition module 1 of locating on the different generators and with information acquisition module 1 wireless communication connection's monitor terminal 2. The information acquisition module 1 comprises a temperature sensor 11 for acquiring temperature information of the carbon brush of the generator, a current sensor 12 for detecting current of the carbon brush of the generator, a microprocessor 13 electrically connected with the temperature sensor 11 and the current sensor 12, and a sub wireless communication module 14 electrically connected with the microprocessor 13. The system also comprises a plurality of wireless receivers 4 and a communication gateway 5, wherein the wireless receivers 4 are arranged in the area where the plurality of generators to be tested are located, are in wireless connection with the sub wireless communication modules 14 in the area, and are used for receiving monitoring data sent by the wireless communication modules 14, and the communication gateway 5 is in wired communication connection with the wireless receivers 4. The information acquisition module 1 further comprises a power module 15 for supplying power to the information acquisition module 1. The communication gateway 5 is connected to a communication network and is connected with the monitoring terminal 2 in data communication through the communication network. The monitor terminal 2 includes a central processor 22 and a display panel 23. In the embodiment, the information acquisition module 1 is arranged for monitoring the running condition of the on-site generator carbon brush, the monitoring terminal 2 is used for remote observation, workers do not need to observe on site, and a plurality of information acquisition modules 1 are arranged, so that the running conditions of a plurality of groups of generator carbon brushes at different positions can be observed at one time, the labor is saved, the efficiency is improved, one wireless transceiver 4 can be connected with a plurality of information acquisition modules 1 in the area at the same time by arranging the sub wireless communication module 14 in the information acquisition module 1 and the wireless transceiver 4 in a wireless manner, the cost is saved, the information transmission is more convenient, the installation is more convenient, a signal line is not required to be additionally arranged, a plurality of wireless transceivers 4 are arranged in different areas, the information is transmitted to the monitoring terminal 2 through a communication network, a plurality of different areas can be monitored at the same time, and the monitoring range is larger; set up temperature sensor 11 and be used for gathering carbon brush temperature information, avoid the carbon brush high temperature to lead to damaging, set up current sensor 12 and be used for monitoring generator current signal to judge whether the generator normally works, set up microprocessor 13 and be used for on-the-spot preliminary treatment information, whether preliminary judgement carbon brush has the high scheduling problem of temperature, information acquisition module 1 sets up solitary power module 1, avoids leading to stopping the monitoring owing to prevent having a power failure.

Referring to fig. 1, the mobile phone terminal 3 is further included. The monitoring terminal 2 comprises a dialing module 24 for cooperating with the mobile phone terminal 3. When the central processing unit 22 of the monitoring terminal 2 determines that the temperature of the carbon brush of the generator reaches the early warning value, the dialing module 24 can dial the preset number of the mobile phone terminal 3 at the first time to remind the worker, so that the worker is prevented from missing an alarm due to the fact that the worker is not located at the monitoring terminal 2. Through dialing reminding, the reminding effect is better.

Example two:

referring to fig. 1, on the basis of the first embodiment, the information acquisition module 1 includes a vibration sensor 15 disposed on the generator for monitoring a vibration signal. The shock sensor 15 is in data communication with the microprocessor 13. The vibration sensor 15 is arranged to monitor the vibration signal of the generator, so as to determine whether the generator is running and whether the running state is normal.

Referring to fig. 1, the information collecting module 1 includes a positioning module 16 disposed on the generator for positioning the generator. Set up location module 16 and be convenient for find the generator position fast, find the generator position in the very first time when monitor terminal 2 finds generator carbon brush high temperature, be favorable to discovering the trouble generator fast under the multizone simultaneous monitoring condition.

Referring to fig. 1, the information collection module 1 includes a sub-alarm 17. The microprocessor 13 is in control connection with the sub-alarm 17. When the temperature of the carbon brush of the generator where the information acquisition module 1 is located is too high, the sub-alarm 17 can send out an alarm at the first time, so that field workers can find the situation quickly.

Referring to fig. 1, the monitor terminal 2 includes a monitor terminal alarm 25 electrically connected to the central processing unit 22. When the monitoring terminal 2 finds that the temperature of the generator carbon brush is too high, the monitoring terminal alarm 25 can give an alarm in time by referring to fig. 1 for the first time, so that a monitoring terminal worker can find the situation quickly.

Referring to fig. 1, the information acquisition module 1 includes an information acquisition storage module 18 in data communication connection with the microprocessor 13. The monitoring terminal 2 includes a monitoring terminal storage module 26 in data communication connection with the central processor 22. The information acquisition and storage module 18 and the monitoring terminal storage module 26 can be arranged to retain real-time data, so that the tracing is convenient.

Referring to fig. 1, a data preprocessing module is disposed between the temperature sensor 11 and the current sensor 12 and the microprocessor 13. The data preprocessing module comprises an amplifying circuit 19 connected with the output ends of the temperature sensor 11 and the current sensor 12 in a communication mode and a filtering circuit 20 arranged between the amplifying circuit 19 and the microprocessor 13. The amplifying circuit 19 and the filter circuit 20 are arranged to preprocess the information, so that the subsequent analysis is more convenient and accurate.

Referring to fig. 1, the system further comprises an infrared thermal imager 6 which is arranged in the area where the plurality of tested generators are located and is in wireless connection with the wireless transceiver 4 in the area for monitoring infrared signals in the area. Set up infrared thermal imager 6 and can be used for observing the thermal imaging picture in the region of place, conveniently observe the condition of generating heat at generator carbon brush position, can cooperate with information acquisition module 1, monitor generator carbon brush temperature unusual back when information acquisition module 1, monitor terminal 2 can open the thermal imaging picture in order to observe this regional generator through infrared thermal imager 6 in this region of communication network control, the condition is known to the very first time.

Referring to fig. 1, the information collection module 1 includes a smoke sensor 21. The microprocessor 13 is in control connection with the smoke sensor 21. The smoke sensor 21 is used for observing smoke signals to prevent fire, and can also assist in monitoring the temperature of the generator carbon brush, and when the temperature sensor 11 and the smoke sensor 21 simultaneously monitor abnormality, the temperature of the generator carbon brush can be suspected to reach a dangerous value.

The utility model discloses the working process:

the utility model discloses generator carbon brush on-line monitoring system is in the course of the work, set up in an area and cover this regional wireless transceiver 4, set up information acquisition module 1 on every generator in this area, and send out 4 wireless connection with information acquisition module 1 and wireless transceiver through wireless communication module 14, temperature sensor 11 gathers carbon brush temperature information, current sensor 12 is used for monitoring generator current signal, monitor terminal 2 receives the monitoring information who sends from communication gateway 5 through communication network, carry out long-range on-line monitoring to the generator carbon brush.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (10)

1. Generator carbon brush on-line monitoring system, including a plurality of information acquisition modules (1) of locating on different generators and with information acquisition module (1) wireless communication connection's monitor terminal (2), information acquisition module (1) including be used for gathering generator carbon brush temperature information temperature sensor (11), be used for detecting generator carbon brush current sensor (12), with temperature sensor (11) with current sensor (12) electric connection's microprocessor (13), with microprocessor (13) electric connection's sub wireless communication module (14), its characterized in that: the monitoring system is characterized by further comprising one or more wireless receivers (4) and a communication gateway (5), wherein the wireless receivers (4) are arranged in one or more regions where the tested generators are located, the sub wireless communication modules (14) are in wireless connection and used for receiving monitoring data sent by the wireless communication modules (14), the communication gateway (5) is in wired communication connection with the wireless receivers (4), the information acquisition module (1) further comprises a power module (111) used for supplying power to the information acquisition module (1), the communication gateway (5) is connected into a communication network and is in data communication connection with the monitoring terminal (2) through the communication network, and the monitoring terminal (2) comprises a central processing unit (22) and a display panel (23).

2. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: the monitoring terminal (2) comprises a dialing module (24) matched with the mobile phone end (3).

3. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: the information acquisition module (1) including locating be used for monitoring vibrations sensor (15) of signal on the generator, vibrations sensor (15) with microprocessor (13) data communication is connected.

4. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: the information acquisition module (1) comprises a positioning module (16) which is arranged on the generator and used for positioning the position of the generator.

5. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: the information acquisition module (1) comprises a sub-alarm (17), and the microprocessor (13) is in control connection with the sub-alarm (17).

6. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: the monitoring terminal (2) comprises a monitoring terminal alarm (25) electrically connected with the central processing unit (22).

7. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: the information acquisition module (1) comprises an information acquisition storage module (18) in data communication connection with the microprocessor (13), and the monitoring terminal (2) comprises a monitoring terminal storage module (26) in data communication connection with the central processing unit (22).

8. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: temperature sensor (11) with current sensor (12) with be equipped with data preprocessing module between microprocessor (13), data preprocessing module include with temperature sensor (11), current sensor (12) output communication connection's amplifier circuit (19) with locate filter circuit (20) between amplifier circuit (19) and microprocessor (13).

9. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: the system also comprises an infrared thermal imager (6) which is arranged in the area where one or more tested generators are located and is in wireless connection with the wireless transceiver (4) in the area where the generators are located for monitoring infrared signals in the area where the generators are located.

10. The on-line monitoring system for the carbon brush of the generator according to claim 1, characterized in that: the information acquisition module (1) comprises a smoke sensor (21), and the microprocessor (13) is in control connection with the smoke sensor (21).

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