Device and method for controlling anti-surging of a blast blower

A control method and anti-surge technology, which are used in pump control, components of pumping devices for elastic fluids, mechanical equipment, etc., can solve problems such as large pressure difference between blades and affect the safe operation of blowers

Active Publication Date: 2009-09-30
SHANGHAI BAOSIGHT SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The connection line between the flow and pressure points when the fan is blocked is called the blocking line. When the fan is blocked, the pressure difference between the front and back of the blade is very large, which affects the safe operation of the blower.

Method used

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  • Device and method for controlling anti-surging of a blast blower
  • Device and method for controlling anti-surging of a blast blower
  • Device and method for controlling anti-surging of a blast blower

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Embodiment Construction

[0028] The static anti-surge control line does not change with the temperature and pressure parameters. To investigate the physical essence of the surge, the surge line is the pressure obtained by taking the measured air volume as the abscissa, the pressure as the ordinate, and the vane angle as the parameter. - A curve formed by a collection of surge points on the measured air volume characteristic curve. Since the constant air volume required by the blast furnace refers to a certain amount of air volume at the reference temperature and reference pressure, that is, the standard air volume, the actual operating point air volume is displayed on the monitoring chart. The standard air volume after temperature and pressure treatment is correspondingly displayed on the operation monitoring chart. The anti-surge control curve should also be the curve obtained after the abscissa of the original anti-surge control line is modified and transformed into the air volume under the reference ...

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Abstract

The invention discloses a device for controlling anti-surging of a blast blower, which comprises a sensor module, a standard flow conversion module, a dynamic anti-surging control module, an anti-surging adjuster and an execution mechanism. The invention also discloses a method for controlling the anti-surging, which comprises the following steps: step one, measuring temperature and pressure of an inlet and pressure of an outlet; step two, converting flow of the inlet into the flow in a standard state; step three, calculating a dynamic anti-surging control curve according to the temperature and the pressure of the inlet and a static anti-surging control curve; step four, finding out anti-surging control pressure corresponding to the converted flow in the standard state according to the dynamic anti-surging control curve, and outputting an anti-surging control signal when the pressure of the outlet is equal to or larger than the anti-surging control pressure; and step five, controlling a normal operation point of the operation of the blast blower according to the anti-surging control signal. The method establishes the dynamic anti-surging control curve and realizes the anti-surging control under different ambient temperatures and pressure states.

Description

technical field [0001] The invention relates to a blower control device, in particular to a super-large-capacity blower anti-surge control device. The present invention also relates to a control method of the above device. Background technique [0002] The blast furnace blast directly serves the blast furnace production, and accepts the instructions of the blast furnace to carry out operations such as air supply, oxygen supply, and dehumidification. The operating parameters of the blower are divided into two parts, one is the instructional parameters given by the blast furnace, such as air volume, oxygen volume, and humidity; the other part of the operating parameters is necessary for the safe operation of the blower unit, such as wind pressure and lubricating oil pressure. [0003] Such as figure 1 Shown is the schematic diagram of the blower system. The air is sent into the dehumidifier through the air filter, and then enters the blower through the suction valve oxygen m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00F04D29/66F04D29/00
Inventor 李伍刚胡云
Owner SHANGHAI BAOSIGHT SOFTWARE CO LTD
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