Air volume control system of steam turbine generator set and control method of air volume control system

Abstract

The invention relates to an air volume control system of a steam turbine generator set and a control method of the air volume control system and aims to solve the problems that air volume control is not accurate enough and cannot be adjusted in real time in the prior art. According to the technical scheme, the air volume control system of the steam turbine generator set comprises a control mainboard, an air volume testing device, an oxygen volume testing device, an actuator, an air volume adjusting device and a display panel. The air volume testing device and the oxygen volume testing device are both connected with the control mainboard; the display panel is connected with the control mainboard; the control mainboard is connected with the actuator; the actuator is connected with the air volume adjusting device; the air volume adjusting device comprises a fixing shaft, an adjusting baffle, a flow guide plate and a lifting mechanism; the fixing shaft is fixed on the air inlet of a boiler; the adjusting baffle is hinged to the fixing shaft; one end of the flow guide plate is welded on the air inlet, and the other end is welded on the fixing shaft; the lifting mechanism comprises a push rod, a sealing guide sleeve and an electric propeller; the push rod is mounted on the sealing guide sleeve; the sealing guide sleeve is mounted on the electric propeller; and the push rod penetrates through the air inlet and is connected with the adjusting baffle. The air volume control system is reasonable in structural design and more accurate in air volume control.

Description

technical field [0001] The invention relates to an air volume control system and an air volume control method thereof, in particular to an air volume control system of a steam turbine generator set and an air volume control method thereof. Background technique [0002] When the steam turbine generator set is working, the boiler outputs steam, high-temperature water or organic heat carrier with certain heat energy. The steam turbine converts the steam power into mechanical energy, and then converts the mechanical energy into electrical energy through the generator. Boiler output steam needs to consume fuel, and the efficiency of fuel use is closely related to the control of air volume in the boiler. At present, the air volume control method of boilers used in domestic power plants is generally to directly adjust the air volume according to the amount of fuel. When the calorific value of the furnace fuel changes, the amount of fuel entering the furnace with the same load chang...

AI Technical Summary

Problems solved by technology

Boiler output steam needs to consume fuel, and the efficiency of fuel use is closely related to the control of air volume in the boiler. At present, the air volume control method of boilers used in domestic power plants is generally to directly adjust the air volume according to the amount of fuel. When the calorific value of the furnace fuel changes, the amount of fuel entering the furnace with the same load changes, and the air volume of the boiler also changes, but the theoretical air volume required for actual combustion is basically unchanged, and the air volume of the boiler is often too large, which reduces the efficiency of the unit

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