Anti-blocking boiler air cap applied to power station field

Abstract

The invention belongs to the technical field of air caps, and particularly relates to an anti-blocking boiler air cap applied to the power station field. The anti-blocking boiler air cap comprises anair cap conical cover, an air cap sleeve, air cap holes and an executing mechanism, wherein a turbine drives a rotary shaft to rotate after being blown by air, and volute spiral springs are compressedfor energy storage; after the turbine rotates after being blown by air, executing rods in an anti-blocking mechanism can be quickly separated from the air cap holes, and normal ventilation of the aircap is achieved. After the air cap stops air blowing, the volute spiral springs release energy; the release speed of the volute spiral springs can be decreased through a fly wheel, and the effect that the rotary shaft can drive annular sleeves to slowly rotate through a first shaft sleeve, connection plates and a gear ring; and the executing rods in the anti-blocking mechanism can slowly penetrate through the air cap holes in a rotary mode, thus, the effect that high-temperature small-particle coal in the air cap holes can be discharged through the executing rods is ensured, in addition, a small space without the high-temperature small-particle coal can be formed through rotation of the rotary executing rods, and the situation that the air cap is blocked is avoided.

Description

technical field [0001] The invention belongs to the technical field of air caps, in particular to an anti-blocking boiler air cap used in the field of power plants. Background technique [0002] At present, there is a circulating fluidized bed boiler in a power plant, and many wind caps need to be arranged at the bottom of the furnace to ensure that the pulverized coal in the furnace can be burned in a boiling state. There are many shapes of hoods. For the hood that resembles a mushroom, the upper end of the hood is closed, and the lower end is processed into a plug so that it can be installed vertically at the bottom of the furnace. The center of the hood is hollow and under the edge of the head On the circumference, open a row of ventilation holes. When the boiler is shut down, the hood no longer exhausts the air, and the high-temperature small particle coal is piled up at the bottom of the furnace under the action of gravity. When a boiler coking accident occurs, the bo...

AI Technical Summary

Problems solved by technology

When a boiler coking accident occurs, the boiler needs to be shut down in an emergency, and the air cap will stop ventilation soon, so a large amount of high-temperature small-particle coal in a glued state will easily enter the air cap hole, and after the high-temperature small-particle coal is cooled And after sticking to each other, a relatively large cinder group will be formed, which will block the hole of the air cap, causing a lot of trouble to check the blockage of the air cap in the later stage

In addition, when all the holes of the wind cap are completely blocked by the coke blocks after the cooling of large particles, the wind cap will not be able to continue to be used

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