Energy saving control system of primary fan with hydraulic resistance governor

Abstract

The invention discloses a primary fan energy-saving control system with a liquid-resistant speed regulator, and belongs to the technical field of automatic power station control. The technical scheme includes that the primary fan energy-saving control system with the liquid-resistant speed regulator comprises a boiler unit regulation and control module, a boiler bed temperature monitoring module, a fan unit regulation and control module, a fan air quantity requirement operation module and a liquid-resistant speed regulator deviation operation module; the boiler unit regulation and control module comprises a boiler running load requirement module and an electric energy load requirement module, and the fan unit regulation and control module comprises a liquid-resistant speed regulator opening regulation module and a fan barrier opening regulation module. The primary fan energy-saving control system with the liquid-resistant speed regulator has the advantages that the speeds of boilers can be quickly regulated, and the primary fan energy-saving control system is high in regulating precision and applicable to the field of application of power generating boilers.

Description

technical field [0001] The invention discloses a primary fan energy-saving control system with a liquid resistance governor, belonging to the technical field of automatic control of power plants. Background technique [0002] In thermal power generation, the safe operation of generator sets and the economic benefits they bring have become a very important issue for power companies. Fan control is a very important link in the thermal power boiler system. Therefore, reasonable and efficient fan control It is a powerful guarantee for the safe operation and economic benefits of the generator set. [0003] In order to improve the fan control effect, a liquid resistance governor is usually installed in the fan control system, and the fan air volume and pressure are adjusted by adjusting the speed of the fan in the boiler fan system, thereby controlling the combustion work of the boiler. However, in this method, when the inlet adjustment baffle of the primary fan and the liquid re...

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Problems solved by technology

[0003] In order to improve the control effect of the fan, a liquid resistance governor is usually installed in the fan control system, and the air volume and pressure of the fan are adjusted by adjusting the speed of the fan in the boiler fan system, thereby controlling the combustion of the boiler. According to the load demand, the fan air volume is transported, and the energy saving effect is better. However, in this method, when the primary fan inlet adjustment baffle and the liquid resistance governor are not coordinated, it is easy to cause the fan to vibrate and trip, which will cause the boiler to trip. Safety production brings hidden dangers; in addition, this method has poor adjustment characteristics, poor linearity, and a large lag when adjusting the primary air volume and air pressure, which in turn affects the input rate and adjustment effect of automatic power generation control

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