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Intelligent primary air pressure target value control system and method

An intelligent control system and target value technology, applied in the direction of combustion control, combustion method, air supply adjustment, etc., can solve the problem of increasing the power consumption of the primary fan, and achieve the effect of offsetting adverse effects, meeting demand, and increasing the amount of pulverized coal

Inactive Publication Date: 2015-08-19
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the hot air baffle is in a half-open state, there is an obvious throttling loss (1.0-2.0kpa). When the boiler load is in a stable state, this throttling loss is a loss, which increases the power consumption of the primary fan.

Method used

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  • Intelligent primary air pressure target value control system and method

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Embodiment Construction

[0012] The present invention is described in further detail below in conjunction with accompanying drawing:

[0013] refer to figure 1 According to this method, the primary air pressure target value intelligent control system of the present invention includes a controller 5, an adder 4, a first control logic module 3 for generating a preset value of a reference primary air pressure, and a first control logic module 3 for generating an additional primary air pressure. The second logic control module 2 of the preset value of the pressure, and the acquisition module 1 for collecting the AGC instruction issued by the power management system; the output terminal of the acquisition module 1 is connected to the input terminal of the second logic control module 2, The output end of the second logic control module 2 is connected with the output end of the first control logic module 3 and the input end of the adder 4, and the output end of the adder 4 is connected with the input end of ...

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Abstract

The invention discloses an intelligent primary air pressure target value control system and method. The system comprises a first control logic module, a second logic control module, a controller, a summator, and a collecting module for collecting AGC instructions sent out by an electric energy management system. The output end of the collecting module is connected with the input end of the second logic control module. The output end of the second logic control module is connected with the output end of the first control logic module and the input end of the summator. The output end of the summator is connected with the input end of the controller. The output end of the controller is connected with the control end of a hot air baffle in a primary air duct. By means of the system and method, primary air power consumption can be effectively lowered.

Description

technical field [0001] The invention belongs to the field of thermal power generation, and relates to an intelligent control system and method for a primary wind pressure target value. Background technique [0002] For boilers with direct-blowing pulverizing system, in order to improve the load response speed during the loading process, the hot air baffle of the coal mill is usually in a half-open (40-60°) state in actual operation, so that the hot air baffle When the plate opening continues to increase, the primary air volume has a flow response, which meets the load response speed. Since the hot air baffle is in a half-open state, there is an obvious throttling loss (1.0-2.0kpa). When the boiler load is in a stable state, this throttling loss is a loss, which increases the power consumption of the primary fan. How to solve the contradiction between the throttling loss of the hot air baffle and the boiler load response capability is the key to reducing the primary wind pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23N3/00F23N5/00
Inventor 魏铜生黄香彬张玉胜王晨刘智勇
Owner XIAN THERMAL POWER RES INST CO LTD
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