The return valve is an important part of the circulating fluidized bed boiler. The operation condition in the return valve is directly related to the normal operation of the circulating fluidized bed boiler. For example

if the return material of the return valve is not smooth

it is necessary to press the boiler for fire operation. In the past

the operator needs to judge and operate it manually. However

the operator may not find that the return material of the return valve is not smooth in time

resulting in operation delay or even occurrence. The operation error leads to the blockage of the return valve

coking and shutdown of the furnace

resulting in significant economic losses. The production technicians of Fenyi power plant of state power investment Jiangxi company analyzed and researched the previous fire suppression process

and developed the "fire suppression protection" thermal automatic control system. When the return valve is blocked or blocked and other emergency situations occur

the pressure fire protection will be handled automatically

and the generator set will not be able to work.After the emergency situation is handled

the hot state will be started quickly

and the rated working condition will be restored in a short time

so as to ensure the normal operation of the circulating fluidized bed boiler. It can effectively monitor the operation status of the external circulating ash quantity loop

improve the efficiency and economy of the circulating fluidized bed boiler

and can be widely used in various types of circulating fluidized bed units.