Combustion-supporting fan linkage control system and method

A technology of linkage control system and combustion-supporting fan, applied in pump control, machine/engine, heat treatment process control, etc., can solve energy waste and other problems, achieve the effect of reducing workload, reducing waste of electric energy, and overcoming selection difficulties

Active Publication Date: 2015-07-15
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

Although the strategy of ensuring high value ensures sufficient air volume and reduces the workload of operators, it still causes waste of energy

Method used

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  • Combustion-supporting fan linkage control system and method
  • Combustion-supporting fan linkage control system and method
  • Combustion-supporting fan linkage control system and method

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Embodiment Construction

[0042] The combustion-supporting fan linkage control system and method of the present invention use a PLC device to automatically control the damper opening of the combustion-supporting fan, and automatically determine the optimal number of combustion-supporting fans currently needed to realize the linkage control of the combustion-supporting fan.

[0043] Specifically, refer to image 3 , is a structural schematic diagram of the combustion-supporting blower linkage control system of the present invention. The combustion-supporting fan linkage control system of the present invention includes an air pressure detection device, a damper control device, a power supply control device, a man-machine interface and a PLC device.

[0044] The air pressure detection device is arranged on the main pipe connecting the combustion-supporting fan, and its output port is communicatively connected with the first input port 11 of the PLC device. The air pressure value is output to the first in...

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Abstract

The invention discloses a combustion-supporting fan linkage control system and method, wherein the system includes an air pressure detection device, a throttle control device, a power control unit, a human-computer interaction interface and a PLC device. The PLC device controls an opening degree of throttles of combustion-supporting fans according to an air pressure value outputted by the air pressure detection device and judges whether a supplemental combustion-supporting fan is required to be started or a running combustion-supporting fan is required to be stopped according to the air pressure value and the opening degree of the throttles. According to the system and the method, the waste of electric energy brought because the best starting number of the combustion-supporting fans cannot be determined is reduced, at the same time, the choice difficulty of the combustion-supporting fans during load fluctuation is overcome, and the work load of operators is reduced.

Description

technical field [0001] The invention relates to the automatic control of heating furnace instruments, in particular to the control of the combustion-supporting fan of the heating furnace. Background technique [0002] In order to heat the slab effectively, hot rolling mills are generally equipped with multiple slab heating furnaces, usually using mixed gas as fuel. In order to achieve ideal combustion, a combustion-supporting fan must be configured to provide a continuous and stable air volume to achieve the target air-fuel ratio control. Usually, each heating furnace is equipped with 2 combustion-supporting fans, and the configuration method is as follows figure 1 As shown, the air volume is achieved by adjusting the opening of the air door. On the one hand, it can ensure the air volume demand under heavy load, and on the other hand, the configuration of two units is also convenient for maintenance and switching. Such a configuration will cause energy waste when one combu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D11/00C21D1/52F04D27/00
Inventor 张志强黄夏兰赵海滨
Owner BAOSHAN IRON & STEEL CO LTD
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