A control method, device and system for a dust removal fan

A technology of dust removal fan and control method, which is applied in the direction of pump control, mechanical equipment, machine/engine, etc., can solve the problems of increasing pipeline system loss and not obvious energy saving effect, and achieve the effect of saving electric energy and good energy saving effect

Active Publication Date: 2015-08-05
ZHONGYE-CHANGTIAN INT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventor found in the process of realizing the present invention that because this solution changed the performance curve of the pipeline and the performance curve of the fan while changing the opening of the valve, the loss of the pipeline system was increased, and the energy saving effect was not obvious

Method used

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  • A control method, device and system for a dust removal fan
  • A control method, device and system for a dust removal fan
  • A control method, device and system for a dust removal fan

Examples

Experimental program
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Effect test

Embodiment 1

[0077] see Figure 4 As shown, this embodiment discloses a control method of a dust removal fan, the method comprising:

[0078] S401. Obtain the current material quantity. The amount of material referred to in this embodiment is the flow of material on the trolley of the sintering system. Specifically, the material quantity can be read from the computer of the sintering system. It should be pointed out that the change of material volume is mainly affected by two factors, one big and one small: the big factor is the change of output, when the production capacity needs to be increased in a certain month or a certain day, it is necessary to increase the material volume (can be used in the sintering system This will also lead to a large change in the amount of dust, and then the air volume required for dust removal needs to be changed accordingly. This is also the main scene to be dealt with in the present invention. After that, the amount of material will remain relatively sta...

Embodiment 2

[0091] The method is further described below in combination with specific scenarios based on the above embodiment. In this embodiment, there are n dust raising points (or posts), and the dust removal fan motor is driven by a frequency conversion system, which is specifically controlled by a frequency conversion controller. figure 1 middle 10 position) respectively set the density meter Y 1 ···Y n , each density meter can be set within 2m radius of the corresponding dust point, and these density meters are used to monitor the dust particle density ρ of each dust point in real time 1 ···ρ n . According to the assumption in the previous embodiment, the ρ 1 ···ρ n are regarded as the same or approximately the same, so ρ is used in the following r to replace ρ 1 ···ρ n any value in . Each density meter and frequency conversion controller are connected with the control computer of the dust removal system, and the control computer of the dust removal system is further connec...

Embodiment 3

[0106] see Figure 7 As shown, this embodiment discloses a control device for a dust removal fan, and the device includes:

[0107] A material quantity acquisition unit 701, configured to acquire the current material quantity;

[0108] The material quantity judging unit 702 is used to judge whether the current material quantity is greater than or less than the preset material quantity, if it is greater, the frequency increase unit is triggered, and if it is less, the frequency decrease unit is triggered;

[0109] The frequency increasing unit 703 is used to gradually increase the frequency from the preset motor frequency of the dust removal fan, and at the same time obtain the dust particle density of the dust raising point until the absolute value of the difference between the dust particle density of the dust raising point and the preset dust particle density Less than or equal to the allowable error;

[0110] The frequency reduction unit 704 is used to gradually reduce th...

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Abstract

The invention relates to an energy-saving technology, and discloses a control method, a control device and a control system for a dust removal fan. The method comprises the following steps of: acquiring a current material amount; and judging whether the current material amount is more / less than a preset material amount or not, starting gradually increasing / decreasing frequency from the preset motor frequency of the dust removal fan, and simultaneously acquiring the dust particle density of a dust raising point until an absolute value of a difference between the dust particle density of the dust raising point and preset dust particle density is less than or equal to a permissible error. A required basic air volume is judged on the basis of the current material amount, and an adjustment end point of the motor frequency is determined by regulating the motor frequency of the dust removal fan and simultaneously detecting the dust particle density of the dust raising point, so that the motor frequency of the dust removal fan can be regulated to an optimal numerical value capable of meeting dust removal requirements and avoiding the waste of the air volume, and electric energy consumed by the dust removal fan can be effectively saved.

Description

technical field [0001] The invention relates to the energy-saving technology of a sintering system in the field of metallurgy, in particular to a control method, device and system for a dust removal fan. Background technique [0002] With the rapid development of modern industry, the scale of steel production is getting larger and larger, and energy consumption is also increasing. Energy conservation and environmental protection have become important indicators of steel production. In iron and steel production, iron-containing raw material ores need to be processed by a sintering system before entering the blast furnace for smelting. The specific sintering process is: first mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, add an appropriate amount of water, and form a mixed material after mixing and pelletizing, and then place the mixed material in the sintering system Roasting on the trolley at high temperature causes a series ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00
Inventor 卢杨权袁立新孙超申伟杰高鹏双刘慧芬
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD
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