Control Algorithm of Distribution Ring Number of Blast Furnace Distributor
A control algorithm and technology of distributor, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of distribution range error, dead zone of distribution ring number, affecting gas in blast furnace furnace, etc. The effect of improved utilization and accuracy
Active Publication Date: 2015-09-23
FANGDA SPECIAL STEEL TECHNOLOGY CO LTD
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Problems solved by technology
There are two defects in this algorithm for calculating the number of rings: 1. There is a dead zone for the number of cloth rings in the first ring cloth when the discharge chute reaches the preset tilting angle α
2. There is a cloth range error in the first ring cloth when the discharge chute reaches the preset tilting angle α
At present, the multi-ring material distribution system implemented by the blast furnace requires that the number of material distribution rings and the material distribution range of each tilting angle must meet the set value, but in actual use, there are the above two defects, so that the concentric piles of materials produced by the blast furnace furnace The height difference of the blast furnace does not meet the requirements, which affects the production of gas in the blast furnace, resulting in an increase in the fuel ratio
Method used
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[0023] The present invention will be further described below in conjunction with drawings and embodiments. see figure 1 , figure 2 and image 3 , taking Nanchang Fangda Special Steel 3# blast furnace as an example, it adopts the multi-ring cloth method, when the chute tilts to the predetermined tilting angle α (see figure 1 ), start chute cloth control, set β, △β, β 0 Respectively, the rotation angle of the blast furnace chute in the horizontal rotation, the lagging angle area, and the initial rotation angle (see figure 2 ). Calculate the number of rotation rings of the distribution chute, the number of rotation rings of the distribution chute is determined by the rotation angle β of the distribution chute and the initial rotation angle β 0 When the increment reaches 360°, it is recorded as a ring, and the number of rings is accumulated according to this requirement. When the number of rotation rings of the distribution chute reaches the preset number of rings, the con...
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The invention discloses a material distributing ring number control algorithm for a blast furnace material distributor. The material distributing ring number control algorithm is characterized in that a rotary coder is arranged on a rotating mechanism arranged on the furnace top of a blast furnace, the rotary coder converts the position of the rotating mechanism into digital numbers, the digital numbers are synchronously transmitted to a PLC (programmable logic controller), then, the PLC coverts the digital signals into angle values, in addition, the material distributing ring number calculation is divided into two parts including the clockwise rotation and the anticlockwise rotation according to the rotating directions, a chute material distributing ring is divided into a zero point passing region and a normal region, and the material distributing ring number precise control is carried out. The algorithm has the advantages that the precision of the material distributing range and the material distributing ring number of each inclination angle in the multi-ring material distributing process can be improved, and the high-low head of each concentric round material pile generated by the material distribution reaches the requirement, so the utilization rate of coal gas produced by the blast furnace can be improved.
Description
technical field [0001] The invention relates to a blast furnace material distribution automatic control technology, which is suitable for the circular material distribution control of a blast furnace distributor, and particularly relates to a control algorithm for the number of distribution rings of a blast furnace distributor. technical background [0002] The main method of blast furnace cloth is ring cloth. Ring distribution is to distribute the charge into the blast furnace in a ring through the horizontal rotation of the blast furnace distributor. The blast furnace distributor is the material distribution equipment on the top of the blast furnace. It consists of a feeding chute, a rotating mechanism that drives the chute to rotate horizontally and tilt vertically, and a tilting mechanism. Its function is to cooperate with the rotating mechanism and tilting mechanism of the blanking chute to make the blanking chute reach the preset tilting angle α, and then distribute t...
Claims
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IPC IPC(8): G05B13/04
Inventor 肖缘剑胡小清
Owner FANGDA SPECIAL STEEL TECHNOLOGY CO LTD