The remote monitoring system designed by fieldbus technology can avoid the use of a large number of cables to transmit the secondary side electrical parameter signals of the field instruments to the central control room, reduce the errors caused by line losses, improve the measurement accuracy, and replace the central control room. Saving floor space and infrastructure investment 1.1 Oil pump pipeline system transformation Fuel pump nameplate parameters are as follows: output 1000kN; outlet pressure: 2.5MPa; oil pump motor parameters: BJO oil pump. Normally, it is used for one use, mainly for the ignition and combustion of five 2200kN/h boilers. When the boiler does not use oil, it must also maintain a certain pressure in the tubing system to prevent the boiler from stalling due to poor coal quality and misuse. The fuel pump is in a large cycle for most of the time, and at this time, the flow rate of the boiler oil gun is zero, and the fuel is returned to the oil depot through the return pipe. In order to improve the safety of the oil depots in key fire zones and achieve unattended operation, it is necessary to comprehensively renovate the fuel pump system of the oil depot.
In the pipeline modification, the pump outlet regulating valve was eliminated and the electric oil return valve was added. After the transformation, the return valve will be closed 90% under normal conditions. The oil pump uses the inverter to control the flow rate in the oil pipe. The oil pump only needs to maintain the combustion pressure (gun pressure), so the pressure can be maintained according to the pressure feedback value of 1.7-2.3. Between MPa. Metering of Monitoring Parameters and Fuel Consumption Flow The fuel pump system, in addition to providing constant pressure fuel, should also include oil temperature, tank level, and fuel flow detection and data collection. Since the fuel pump system uses a large circulation mode to supply oil, two flow sensors are configured, and the actual consumption of the fuel is subtracted from the recovered portion. The system is equipped with ADAM-4050 digital I/O seven-channel input/eight-way output module to realize remote control of oil pump and inverter operation; all analog and temperature parameters are directly converted into digital signals and shielded by RS-485 bus The cable is transmitted to the IPC industrial computer in the remote control room.
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