A kind of air circulation cross-section adjustment device

Abstract

The invention discloses an air circulation cross-section adjusting device comprising a shell. The shell is provided with an air inlet and an air outlet, the air inlet is provided with an air adjusting door, a driving device, a driving crank, a crank connecting rod, a linkage crank, a moving part pull rod and a moving part are arranged inside the shell, the air adjusting door is connected with the driving device, one end of the driving crank is connected with the driving device, the other end of the driving crank is connected with the linkage crank through the crank connecting rod, and the linkage crank is connected with the moving part through the moving part pull rod. The air outlet is provided with an inclined reducing adjusting device, and the top end of the moving part is inserted into the inclined reducing adjusting device. The inclined reducing adjusting device is in the shape of a tube with taper. The air circulation cross-section adjusting device has the advantages that when combustor load adjustment is performed, air inlet amount is adjusted along with opening and closing of an air door plate of the air inlet, and size of the cross section of an air outlet of a flame tube can be adjusted synchronously, so that air speed at the flame tube is ensured to be basically unchanged during combustor load changing in size.

Description

technical field [0001] The invention relates to an air circulation regulating device, in particular to an air circulation section regulating device. Background technique [0002] Usually, when the burner is adjusting the load, the air distribution volume is only realized by adjusting the opening and closing degree of the air inlet damper plate, and the air distribution section of the flame tube is fixed, that is, the wind speed is the highest at the maximum load, and the minimum load is the highest. minimum wind speed. With the increase of burner output power and load adjustment range, when the load is adjusted, especially when the load is adjusted to the minimum, and the air distribution volume is the minimum, the gas flow rate at the flame tube is too low, and the burning flame cannot be blown out of the flame tube , or even backfiring, the burner shell and energy supply parts will be burned and cannot be used, and will cause safety accidents. At the same time, the minimu...

AI Technical Summary

Problems solved by technology

With the increase of the output power of the burner and the load adjustment range, when the load is adjusted, especially when the load is adjusted to the minimum, and the air distribution volume is the minimum, the gas flow rate at the flame tube is too low, and the burning flame cannot be blown out of the flame tube , or even backfiring, the burner shell and energy supply parts will be burned and cannot be used, and will cause safety accidents. At the same time, the minimum load is difficult to reach the required value, and the mixing and combustion effect of gas and air distribution is poor

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