As one of the four major fixed equipment in the mine, the operation characteristics of pressure fan have a decisive impact on the normal production of the whole mine. Pressure fan is also the power source of mine pneumatic machinery, sharing the compressed air production task of mine and providing pneumatic force for production. Therefore, it is of great practical significance to comprehensively and timely grasp the operation of the pressure fan and properly control the pressure fan for saving energy, improving mine production efficiency and realizing safe production.
In order to improve the automation degree of pressure fan, reduce the labor intensity of operators, further realize the unattended operation of pressure fan room and save human resources for the mine, the establishment of as-yfz pressure fan centralized control system will realize the detection, display, control, protection, alarm and management of the whole operation process of pressure fan, The operation records and other parameters of the pressure fan and the operation information of the operator shall be saved to the database. It provides a fast, accurate and comprehensive information basis for operators to monitor and maintain the pressure fan, and realizes the goal of remote monitoring and automatic management of coal mine pressure fan. For leaders at all levels and functional management departments of the mine to timely and accurately grasp the real-time operation status of the pressure fan system, provide a better construction platform for the information construction of the mine, and then realize the goal of smart mine.
The control system realizes the automatic network monitoring and high-definition video monitoring of the whole compressor room, as well as the unattended control requirements. PLC is connected with on-site sensor, transmitter and regulating mechanism to complete the detection and control of relevant parameters of pressure fan. The I / O acquisition station is only responsible for equipment data acquisition, and eye-catching displays the operation mode, start and stop, fault, exhaust temperature, exhaust pressure, pressure fan temperature, voltage, current and other data of the pressure fan. The data server integrates the functions of alarm server, historical data server and login server, and is responsible for the verification and recording of alarm information, the recording of historical data and the verification of user login. The main control computer can browse the real-time data on the I / O acquisition station, view the alarm information of the I / O station, query the historical records of the I / O station, and control the connected equipment of the I / O station.
The system realizes that the operation data of the centralized control system of the pressure fan and the video of the pressure fan station can form a local control station through the existing control system of the pressure fan and the supporting public equipment control system, which is connected to the upper computer through the fieldbus, so as to realize the remote control of the pressure fan on site and the monitoring center. The monitoring and video monitoring hosts of the pressure fan system are equipped with UPS, which can work normally for more than 2 hours in the state of power failure.
The upper computer is connected with each compressor controller and public equipment control PLC in the form of industrial bus, communicates with Modbus communication protocol, collects the process parameters and control status signals of the compressor (field control station), establishes the central control screen, and realizes the remote control of the compressor.
Product features:
1、 Data acquisition and display function
1. Real time acquisition and display of working condition parameters and curves such as pressure, temperature, cooling water temperature, lubricating oil temperature, exhaust pressure, exhaust temperature and shaft temperature of each bearing;
2. Monitor the operation of cooling water system and lubrication system, and monitor the pressure data and curve;
3. Real time acquisition and display of three-phase voltage, current, active power, reactive power, power factor and other electrical parameters and curves;
4. Real time display of switching value data and status such as fan start and stop, as well as various alarm information of fan and motor;
5. Various charts and curves show the operating parameters and operating trend of the pressure fan.
2、 Protection function
1. Pressure fan protection: with water and oil cut-off protection and over temperature protection;
2. System protection: it has the functions of communication failure, preventing misoperation and illegal operation;
3. Overrun and fault data are automatically monitored and alarmed, with animated images, text windows and sound prompts.
3、 Control function
1. Local control: local manual control can be performed;
2. Remote control: users with authority can realize remote monitoring operation through industrial Ethernet;
3. Timing switching and automatic fault switching function: programmable timing switching and automatic fault switching function;
4. It has maintenance control and protection mode.
4、 Historical data query function
Historical start and stop records, historical alarm and fault event records and user operation records can be queried and counted. Query the historical operating condition parameters of the fan and the historical operating electrical parameters of the motor.
Product model:
Benefit effect:
The control system realizes the automation of production management, improves the level of production management, reduces the labor intensity, improves the working environment and improves the labor productivity. The operation status of the fan is transmitted to the monitoring room through communication and displayed on the computer screen in the form of dynamic interface. Its process parameters and production data are collected and analyzed at the same time, which greatly strengthens the supervision and control role of the management and improves the management level.
