CN220019816U - Motor current and running state data transmission monitoring device - Google Patents
Motor current and running state data transmission monitoring device Download PDFInfo
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- CN220019816U CN220019816U CN202320856504.8U CN202320856504U CN220019816U CN 220019816 U CN220019816 U CN 220019816U CN 202320856504 U CN202320856504 U CN 202320856504U CN 220019816 U CN220019816 U CN 220019816U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 18
- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 37
- 238000012423 maintenance Methods 0.000 claims abstract description 23
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000006855 networking Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of maintenance of nuclear power plants, and particularly relates to a motor current and running state data transmission monitoring device. The system comprises a data acquisition device, a monitoring host, a gateway, a 5G base station, an Internet of things platform, a predictive maintenance system and a display terminal, wherein the data acquisition device is connected with the monitoring host, acquired data are input to the monitoring host, the monitoring host is connected with the gateway, the gateway is connected with the Internet of things platform through the 5G base station, the predictive maintenance system is installed on the Internet of things platform, and the predictive maintenance system is connected with the display terminal. The utility model has the beneficial effects that: and taking the on-site breaker auxiliary point, contactor auxiliary point, heat relay auxiliary point and current transformer as data collectors, converting signals by the current transmitter and collecting data by a monitoring host, directly sending dry contact point signals such as the breaker auxiliary point, the contactor auxiliary point and the heat relay auxiliary point to the monitoring host, converting the dry contact point signals into wireless signals by a gateway, transmitting the wireless signals to an Internet of things platform by a 5G network, and finally displaying the wireless signals on the terminal.
Description
Technical Field
The utility model belongs to the technical field of maintenance of nuclear power plants, and particularly relates to a motor current and running state data transmission monitoring device.
Background
There are many three-phase motors in a nuclear power unit, and each motor plays an important role in a process system. At present, a current transformer and a current transducer are arranged in an upstream power supply drawer for monitoring motor current, a phase of current is induced through the current transformer, a current signal is converted into a (4-20) mA signal through the current transducer, and then the signal is transmitted to a master control room analog ammeter and a power plant process computer system (KIT), so that the motor current can be displayed in real time.
However, this method has the following disadvantages:
(1) Because the analog ammeter is not high in precision, the magnitude of the current can be roughly displayed, and the accuracy is not high enough.
(2) When the motor is in open-phase operation, the current of the other two phases is increased, but the electromagnetic trip value of the circuit breaker is not reached, the motor can be burnt out in the action time of the thermal relay, the system only monitors the single-phase current, and the KIT system only displays the single-phase current value, so that the system is not intuitive. When the above failure occurs, the failure cannot be found and removed in time.
(3) The system can not remotely display the power transmission condition of the motor power supply, and can not display the fault state when the motor stops running due to the action of the thermal relay caused by the fault.
Disclosure of Invention
Aiming at the defects existing in the current motor current and motor state monitoring of the nuclear power plant unit, the utility model provides a motor current and running state data transmission monitoring device which is used for monitoring the motor current and the motor running state in real time and transmitting the current and state data to a master control room and a maintenance personnel office computer, so that the motor current and the motor running state are displayed more intuitively, the alarm can be given in time when faults occur, and the faults are removed conveniently and rapidly.
The technical scheme of the utility model is as follows: the utility model provides a motor current and running state data transmission monitoring device, includes data acquisition device, monitoring host computer, gateway, 5G basic station, thing networking platform, predictive maintenance system, display terminal, data acquisition device link to each other with the monitoring host computer, with the data input who gathers to the monitoring host computer, the monitoring host computer links to each other with the gateway, the gateway passes through 5G basic station and connects thing networking platform, install predictive maintenance system on the thing networking platform, predictive maintenance system is connected with display terminal.
The data acquisition device comprises a breaker auxiliary point, a contactor auxiliary point, a thermal relay auxiliary point and a current transformer.
The current transformer is arranged on each phase of the outlet side of the 380V disc cabinet.
The number of the current transformers is 3.
The current transformers collect motor current, each current transformer is connected with a current transducer respectively, and collected current is transmitted to the current transducer.
The current transducer is connected with the monitoring host through the auxiliary point of the breaker, the auxiliary point of the contactor and the auxiliary point of the thermal relay respectively, and is converted into (4-20) mA signals by the current transducer, and the (4-20) mA signals are summarized to the monitoring host.
The utility model has the beneficial effects that: the method comprises the steps of adopting a 5G technology to take a breaker auxiliary point, a contactor auxiliary point, a heat relay auxiliary point and a current transformer on site as data collectors, enabling a current transmitter to convert signals and collect data through a monitoring host, enabling dry contact point signals such as the breaker auxiliary point, the contactor auxiliary point and the heat relay auxiliary point to be directly sent to the monitoring host, enabling a gateway to convert the signals into wireless signals, enabling the wireless signals to be transmitted to an Internet of things platform through a 5G network, and finally displaying the wireless signals on a terminal. Due to the adoption of the 5G technology, the signal cable cost and the cable laying cost in normal time are saved, and the platform can be arranged in a plurality of ways. When motor failure or upstream power failure occurs, the current value of the current is displayed on the display terminal, when the three-phase current value is too different or the current balance degree exceeds a set threshold value, the current value can be highlighted in real time and the alarm can be given out in sound, the operation maintenance personnel can rapidly check and stop the motor, and the risk of burning the motor caused by the fact that the motor is not cut off is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of a motor current and operating state data transmission monitoring device provided by the utility model;
fig. 2 is a view showing a terminal screen.
In the figure: 1 gateway, 2 monitoring host, 3 internet of things platform, 4 predictive maintenance system, 5 display terminal, 65G base station.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples.
A motor current and running state data transmission monitoring device establishes a 5G virtual network based on 5G+MEC at the places such as the upstream power distribution board of the motor to the office where the monitoring data need to be checked in real time, and establishes a set of predictive maintenance system on an MEC platform, all the devices comprise: the system comprises a data acquisition device (comprising a breaker auxiliary point, a contactor auxiliary point, a heat relay auxiliary point, a current transformer), a current transmitter, an installation screen cabinet, a monitoring host, a gateway, a 5G base station, an edge cloud MEC (Internet of things platform), a predictive maintenance system and an operation platform (display terminal). The system network can only transmit internally, can not connect with external network, ensures the security and confidentiality of the data of the nuclear power plant and can not generate any electromagnetic or frequency interference to the electric instrument. The data transmission path is as follows: a Current Transformer (CT) is installed on each phase of the outlet side of the 380V disc cabinet, 3 CT are taken out, motor current is collected, the collected current is transmitted to a current transmitter, the current transmitter is converted into (4-20) mA signals, the (4-20) mA signals are summarized to a monitoring host, the running state of the motor is transmitted to the monitoring host through an upstream power circuit breaker auxiliary point, a contactor auxiliary point and a thermal relay auxiliary point, the motor is converted into wireless signals through a gateway, the wireless signals are uploaded to a predictive maintenance system of an Internet of things platform through a 5G base station, and finally the wireless signals are displayed on the operation platform (display terminal). The monitoring of the motor current and the motor running state is realized, and the data can be stored. When motor faults and motor upstream power faults occur, display alarm of the terminal is achieved, and historical data are checked. The terminal picture is drawn completely according to the site situation, and comprises a motor, a motor position number, a motor three-phase current, a current balance degree, a switch state, a thermal relay action state and the like.
As shown in fig. 1, the motor current and running state data transmission monitoring device comprises a data acquisition device, a monitoring host 2, a gateway 1, a 5G base station 6, an internet of things platform 3, a predictive maintenance system 4 and a display terminal 5. The data acquisition device is connected with the monitoring host 2, acquired data are input to the monitoring host 2, the monitoring host 2 is connected with the gateway 1, the gateway 1 is connected with the Internet of things platform 3 through the 5G base station 6, the predictive maintenance system 4 is installed on the Internet of things platform 3, and the predictive maintenance system 4 is connected with the display terminal 5.
Wherein, the data acquisition device include: circuit breaker auxiliary point, contactor auxiliary point, thermal relay auxiliary point, current transformer. Each phase of the outlet side of the 380V disc cabinet is provided with 3 current transformers, the current transformers are used for collecting motor current, each current transformer is respectively connected with a current transducer, the collected current is transmitted to the current transducer, the current transducer is respectively connected with the monitoring host 2 through an auxiliary point of a breaker, an auxiliary point of a contactor and an auxiliary point of a heat relay, the current transducer is converted into (4-20) mA signals, the (4-20) mA signals are summarized to the monitoring host 2, the running state of the motor is transmitted to the monitoring host 2 through the auxiliary point of an upstream power breaker, the auxiliary point of the contactor and the auxiliary point of the heat relay, the current transducer is converted into wireless signals through the gateway 1, and the wireless signals are uploaded to a predictive maintenance system of an Internet of things platform through a 5G base station, and finally displayed on a display terminal.
A specific model or parameter of the monitoring host 2, the gateway 1, the 5G base station 6, the internet of things platform 3, the predictive maintenance system 4 and the display terminal 5 is provided.
The utility model is implemented as follows:
step one: and establishing a 5G virtual private network in the factory, and completing the connection of all devices. And drawing a motor distribution diagram on the display terminal according to the on-site motor conditions, such as motor positions, motor equipment position numbers, motor power supply loops and the like, wherein each motor can display signals such as three-phase current values, current balance values, motor running/stopping, motor upstream power supply breaker states, contactor states, thermal relay states and the like.
Step two: when the motor is in normal state as shown in fig. 2, the running state of the picture display motor is green, the shutdown state is red, the check boxes beside the motor picture display motor current, current balance degree and the like, and the picture display circuit breaker state, the contactor state and the thermal relay state.
Step three: when the motor fails, the motor icon flashes red and gives out an audible alarm; when the thermal relay acts, the thermal relay flashes red and gives out an audible alarm; when the three-phase current balance rate exceeds a set threshold value, the current frame flashes red and gives out an audible alarm.
Step four: and after observing the alarm from the display terminal, the operation/maintenance personnel quickly check the alarm on site and perform alarm processing.
Claims (7)
1. A motor current and running state data transmission monitoring device is characterized in that: the system comprises a data acquisition device, a monitoring host, a gateway, a 5G base station, an Internet of things platform, a predictive maintenance system and a display terminal, wherein the data acquisition device is connected with the monitoring host, acquired data are input to the monitoring host, the monitoring host is connected with the gateway, the gateway is connected with the Internet of things platform through the 5G base station, the predictive maintenance system is installed on the Internet of things platform, and the predictive maintenance system is connected with the display terminal.
2. A motor current and operating condition data transmission monitoring device as claimed in claim 1, wherein: the data acquisition device comprises a breaker auxiliary point, a contactor auxiliary point, a thermal relay auxiliary point and a current transformer.
3. A motor current and operating condition data transmission monitoring device as claimed in claim 2, wherein: the current transformer is arranged on each phase of the outlet side of the 380V disc cabinet.
4. A motor current and operating condition data transmission monitoring device as claimed in claim 3, wherein: the number of the current transformers is 3.
5. A motor current and operating condition data transmission monitoring device as claimed in claim 3, wherein: the current transformers collect motor current, each current transformer is connected with a current transducer respectively, and collected current is transmitted to the current transducer.
6. A motor current and operating condition data transmission monitoring device as defined in claim 5, wherein: the current transmitter is connected with the monitoring host through the auxiliary point of the breaker, the auxiliary point of the contactor and the auxiliary point of the thermal relay respectively.
7. A motor current and operating condition data transmission monitoring device as defined in claim 6, wherein: the current is converted into (4-20) mA signals by a current transducer, and the (4-20) mA signals are summarized to a monitoring host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320856504.8U CN220019816U (en) | 2023-04-18 | 2023-04-18 | Motor current and running state data transmission monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320856504.8U CN220019816U (en) | 2023-04-18 | 2023-04-18 | Motor current and running state data transmission monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220019816U true CN220019816U (en) | 2023-11-14 |
Family
ID=88678256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320856504.8U Active CN220019816U (en) | 2023-04-18 | 2023-04-18 | Motor current and running state data transmission monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220019816U (en) |
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2023
- 2023-04-18 CN CN202320856504.8U patent/CN220019816U/en active Active
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