Thermal power plant boiler pulverizing and coal feeding control system and control method thereof

Abstract

The invention discloses a thermal power plant boiler pulverizing and coal feeding control system and a control method thereof. The system comprises a power unit which is used for providing a power supply, a sensor detection unit which is used for weighing a load and detecting the state of each link of the system, a control unit which is responsible for carrying out algorithm processing according to a signal provided by the sensor detection unit, automatically adjusting parameters according to preset requirements, providing an optimal control load operation condition and transmitting main operation data, equipment states and alarm information to the display unit, a driving unit which is responsible for receiving an instruction of the control unit, driving the load to operate, feeding back the state of the driving unit to the control unit, and a display unit which is responsible for displaying the parameters, equipment states, alarm information, data storage, data query and operation record registration and query in the equipment operation process output by the control unit. According to the scheme, the stability is improved, the failure rate is reduced, and the personnel maintenancecost and hardware configuration are reduced.

Description

technical field [0001] The invention relates to the technical field of power generation, in particular to a pulverized coal feeding control system for boilers in thermal power plants. Background technique [0002] The coal feeder control system is mainly used in the pulverization system of coal-fired boilers in thermal power plants. volume is more consistent. The coal feeder system can continuously feed coal, with accurate weighing, stable operation, energy saving and high efficiency. At present, the coal feeder control system of domestic thermal power plants mainly adopts packaged circuit boards or integrators with electrical circuits. Due to the relatively early technology, many functions can no longer meet the actual needs of the site, and the problems are more prominent. [0003] The main problems of the prior art are as follows: 1. The control system is prone to misoperation, tripping and shutdown, and the fault is difficult to find; 2. The control system adopts a sol...

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Problems solved by technology

[0003]The main problems of the prior art are as follows: 1. The control system is prone to malfunction, tripping and shutdown, and it is difficult to find the fault; Modification of control due to process changes is inflexible and poor in scalability; 3. The alarm information of the control system is limited, and the cause of the fault cannot be accurately determined, which increases the difficulty of troubleshooting

4. The man-machine interface of the control system is simple and cannot accurately indicate the status and parameters of the equipment

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