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A flow control method of bmd spray water

A technology of flow control and water flow, applied in pump control, components of pumping devices for elastic fluids, non-variable pumps, etc., can solve problems such as complex control algorithms and poor operability, and achieve high feed flow rate Stable, ensure reliability, improve the effect of product surface quality

Active Publication Date: 2022-06-21
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The control algorithm proposed in this document is complex and poor in operability in practical applications

Method used

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  • A flow control method of bmd spray water
  • A flow control method of bmd spray water
  • A flow control method of bmd spray water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Set the starting speed of motor 9 to 500rpm, after a delay of 1 minute, if you choose to automatically calculate the set value of the motor speed, every 0.1 minutes, follow the steps below to calculate:

[0069] 1) Receive the actual flow value Q measured by the flow meter 10 act =72m 3 / h;

[0070] 2) Water flow deviation △Q=100-72=28m 3 / h;

[0071] 3) Calculate the gain coefficient k Q :

[0072]

[0073] 4) Calculate the adjustment amount of the motor speed setting value △V=0.351×28=9.8;

[0074] 5) Determine whether the adjustment amount △V of the motor speed setting value exceeds the limit value, and does not exceed;

[0075] 6) Calculate the current motor speed set value V new =V old +△V=500+9.8=509.8rpm;

[0076] 7) Save the current motor speed set value V old =509.8m / s.

Embodiment 2

[0078] Set the starting speed of motor 9 to 600rpm, after a delay of 1 minute, if you choose to automatically calculate the set value of the motor speed, every 0.1 minutes, follow the steps below to calculate:

[0079] 1) Receive the actual flow value Q measured by the flow meter 10 act =85m3 / h;

[0080] 2) Water flow deviation △Q=100-85=15m 3 / h;

[0081] 3) Calculate the gain coefficient kQ:

[0082]

[0083] 4) Calculate the adjustment amount of the motor speed setting value △V=0.351×15=5.265;

[0084] 5) Determine whether the adjustment amount △V of the motor speed setting value exceeds the limit value, and does not exceed;

[0085] 6) Calculate the current motor speed set value V new =V old +△V=600+5.265=605.265rpm;

[0086] 7) Save the current motor speed set value V old =605.265rpm.

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Abstract

The invention discloses a flow control method of BMD jetting water, which includes a filtering system, and a jetting system connected to it through a water pump and a pipeline. Different speeds control the water pump to produce different water flows; the motor control includes starting, stopping, automatically calculating the motor speed setting value and manually setting the motor speed setting value; the automatically calculating the motor speed setting value includes setting the flow rate first Set value Q set , and then calculate the motor speed every other control period T. The invention can stabilize the feed flow rate of the BMD injection system, so as to achieve a good descaling effect.

Description

technical field [0001] The invention relates to a feed flow rate control technology of a BMD injection system, and more particularly, to a flow control method of water for BMD injection. Background technique [0002] The surface oxides (commonly known as scales) of metal materials after hot-rolling forming usually need to be effectively removed before post-processing, which is called descaling. The commonly used descaling process is chemical pickling, but this process always has many defects such as large pollution, high cost and unstable quality. Based on this, we started to develop BMD technology (Baosteel Mechanical Descalingtechnology, BMD for short), which uses a mixed jet of water and abrasive particles to achieve descaling through continuous blowing and grinding of the jet medium on the metal surface. [0003] like figure 1 As shown, the existing BMD injection system includes: a mixed jet injection system 1, a medium recovery system 2, a filtration system 3, and a s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/06F04D15/00F04D29/70
CPCF04D15/0022F04D15/0088F04D13/06F04D15/0066F04D15/00F04D29/708
Inventor 徐江华段明南房鑫杨向鹏
Owner BAOSHAN IRON & STEEL CO LTD