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A method and system for automatic control of combustion-supporting air pressure in a heating furnace

A technology of heating furnace and air pressure, which is applied in the direction of combustion method, furnace control device, and control of combustion, which can solve the problems that the automatic control of heating furnace combustion air pressure cannot be realized, so as to reduce energy consumption, reduce fan energy consumption, and improve regulation effect of ability

Active Publication Date: 2020-09-29
上海联达节能科技股份有限公司
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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the automatic control of the combustion air pressure of the heating furnace cannot be realized, thereby providing a method and system for automatic control of the combustion air pressure of the heating furnace

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  • A method and system for automatic control of combustion-supporting air pressure in a heating furnace

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Embodiment 1

[0022] An automatic control device for combustion-supporting air pressure of a heating furnace, comprising a set of fan flow adjustment device, a set of wind pressure detection device, a set of gas flow detection device, a set of air volume demand, a set of wind pressure setting calculator, a set of wind pressure Pressure setting corrector, a set of air pressure control regulator and four sets of branch pipe valve position feedback devices.

[0023] Its workflow is as follows:

[0024] (1) Install a set of gas flow meters on the gas main pipe, and transmit the flow data Q1 to the air volume demand calculator in real time.

[0025] (2) The air volume demand calculator calculates the current air volume theoretical demand value Q2 according to the current gas main pipe flow Q1, air-to-coal ratio coefficient k, and air excess coefficient n, Q2=n*K*Q1, and outputs this value to the wind pressure setter. At the same time, the demand value of the air volume can also be calculated a...

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Abstract

The invention belongs to the field of combustion control of hot-rolling heating furnaces, and discloses a method and a device for automatically controlling air pressure of the heating furnace. The method comprises the following steps that: an air pressure setting corrector refers to a valve position feedback value of each branch pipe regulating valve, and performs correction on the basis of the original air pressure set value, so that the air pressure set value can integrate flow characteristics of a fan and regulating characteristics of the branch pipe regulating valves. The device comprises a fan flow regulating device, an air pressure detecting device, a fuel gas flow detecting device, an air quantity requirement calculator, an air pressure setting calculator, an air pressure setting corrector, an air pressure control regulator and a plurality of sets of branch pipe valve position feedback devices. The method and the device provided by the invention can realize automatically and efficiently controlling combustion-supporting air pressure of the heating furnace, and achieve the purpose of saving energy and reducing consumption.

Description

technical field [0001] The invention belongs to the field of combustion control of a hot-rolling heating furnace, and in particular relates to a method and system for controlling the combustion-supporting air pressure of a heating furnace. Background technique [0002] The combustion-supporting air pressure control technology of the heating furnace is one of the important technologies of the combustion control of the heating furnace, which directly affects the combustion quality of the heating furnace fuel. At present, for the pressure control of the combustion air, the constant pressure control of the fan is generally adopted to ensure that the outlet pressure of the fan is constant, but in practical applications, when the system load is large or small, this pressure may not be able to guarantee the flow control effect of each branch pipe. Because the flow control of the branch pipe is generally realized through the regulating valve, and the regulating valve has its own flo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23N3/00F27D19/00
CPCF23N3/002F27D19/00F27D2019/0043
Inventor 丁炳刚孙芳
Owner 上海联达节能科技股份有限公司
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