A method and device for controlling the height of an oxygen lance
A technology of oxygen lance height and control method, which is applied in the field of metallurgy, and can solve the problems of low control accuracy of oxygen lance height and inability to ensure the stability of the steelmaking process, etc.
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Embodiment 1
[0054] This embodiment provides a method for controlling the height of the oxygen lance, such as figure 1 As shown, the methods include:
[0055] S110, acquiring the target height of the oxygen lance, the current height of the oxygen lance, the preset maximum height and minimum height of the oxygen lance, the maximum speed and the minimum speed of the oxygen lance;
[0056] When automatically controlling the movement of the oxygen lance, obtain the target height Lance_Set[n] of the oxygen lance issued by the secondary system, the current height Lance_Real[n] of the oxygen lance, the preset maximum height of the oxygen lance Lance_Max, height The minimum value Lance_Min, the maximum and minimum speed of the oxygen lance.
[0057] S111. Obtain an altitude deviation between the current altitude and the target altitude, and determine a control instruction based on the altitude deviation;
[0058] After the current altitude and the target altitude are obtained, the altitude devia...
Embodiment 2
[0088] This embodiment provides a control device for the height of the oxygen lance, such as figure 2 As shown, the device includes: an acquisition unit 21, a determination unit 22, and a control unit 23; wherein,
[0089] The obtaining unit 21 is used to obtain the target height of the oxygen lance, the current height of the oxygen lance, the preset maximum height and minimum height of the oxygen lance, the maximum speed and the minimum speed of the oxygen lance ;
[0090] The determination unit 22 is configured to obtain the height deviation between the current height and the target height, determine a control command based on the height deviation; determine a corresponding speed preset value based on the height deviation and the speed proportional coefficient; The above speed preset value and the preset speed reduction strategy determine the corresponding current actual speed in different altitude ranges;
[0091] The control unit 23 is configured to control the movement...
Embodiment 3
[0121] In practical application, when it is necessary to control the drop of the oxygen lance for the first time in the steelmaking process, the specific implementation is as follows:
[0122] Obtain the target height Lance_Set[1] of the oxygen lance issued by the secondary system, the current height Lance_Real[1] of the oxygen lance, the preset maximum height Lance_Max of the oxygen lance, the minimum height Lance_Min, and the speed of the oxygen lance Maximum and minimum speed. Among them, the target height is 1100cm, the current height of the oxygen lance is 2100cm, the maximum height is 3200cm, and the minimum height is 960cm; the maximum speed is 16000, and the minimum speed is 500.
[0123] A height deviation between the current height and the target height is determined, and a control command is determined based on the height deviation. The altitude deviation in this embodiment is -1000, so the control command should be a descending command.
[0124] The speed preset ...
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