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Gas regulating device for gas boiler

A technology for gas regulation and gas boilers, which is applied in the direction of air supply adjustment, combustion method, and combustion control, and can solve problems such as difficulty in achieving precise control of furnace air volume, low adjustment accuracy, and large error in control methods

Pending Publication Date: 2019-03-29
广东省特种设备检测研究院佛山检测院
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AI Technical Summary

Problems solved by technology

In these two control methods, due to the non-linear relationship between the opening of the damper and the load, it is difficult to achieve accurate control of the opening of the damper and the actual amount of air entering the furnace.
The air intake volume of the existing boiler is based on the gas flow signal, and the opening of the damper baffle is directly controlled by the valve opening connecting rod to control the actual air volume entering the boiler. Since the opening control of the connecting rod and the damper is mechanically operated, this control method The error is large and the adjustment accuracy is not high

Method used

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  • Gas regulating device for gas boiler

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Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0011] refer to figure 1 . Gas boiler gas regulating device, including boiler body 1, PID controller (Proportion Integration Differentiation, that is, proportional-integral-differential controller) 2, gas flow detection module 3, signal conversion module 4, frequency converter 5 and fan 6, boiler body 1 There is a valve 11, the PID controller 2 is electrically connected to the valve 11 through a wire, the gas flow detection module 3 is located at the valve 11, the input end of the signal conversion module 4 is electrically connected to the gas flow detection module 3 through a wire, the frequency converter 5 and The output end of the signal conversion module 4 is electrically connected through wires, the fan 6 is connected to the frequency converter 5 , and the fan 6 corresponds to the boiler body 1 , that is, the fan 6 delivers air volume to the boiler body...

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Abstract

The invention discloses a gas regulating device for a gas boiler. The gas regulating device comprises a boiler body, a PID controller, a gas flow detecting module, a signal conversion module, a frequency converter and a fan, wherein a valve is arranged on the boiler body; the PID controller is electrically connected with the valve; the gas flow detecting module is arranged at the valve; an input end of the signal conversion module is electrically connected with the gas flow detecting module; the frequency converter is electrically connected with an output end of the signal conversion module; the fan is connected with the frequency converter; and the fan corresponds to the boiler body. According to the gas regulating device for the gas boiler, a gas flow signal is directly obtained throughthe gas flow detecting module, and then the gas flow signal is sent to the signal conversion module to be converted into an input control signal of the frequency converter through the signal conversion module, so that the frequency conversion of the frequency converter is achieved; the rotation frequency of the fan is adjusted, so that the air volume entering the boiler body is adjusted; and the adjustment range of the air volume is refined, so that the adjustment precision of the air volume is improved.

Description

technical field [0001] The invention belongs to a flue gas regulating device for a gas boiler, in particular to a gas regulating device for a gas boiler. Background technique [0002] There are two ways to control the amount of air entering the boiler: the control of the opening of the air door baffle and the control of adjusting the amount of air through frequency conversion. In these two control methods, due to the non-linear relationship between the opening of the damper and the load, it is difficult to accurately control the opening of the damper and the actual amount of air entering the furnace. The air intake volume of the existing boiler is based on the gas flow signal, and the opening of the damper baffle is directly controlled by the valve opening connecting rod to control the actual air volume entering the boiler. Since the opening control of the connecting rod and the damper is mechanically operated, this control method The error is large and the adjustment accur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23N3/00
CPCF23N3/002
Inventor 陈定光黎海王耀青
Owner 广东省特种设备检测研究院佛山检测院
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