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Device and method for controlling safe pressure of horizontal balance system of rolling mill

A technology of balancing system and safety pressure, applied in rolling mill control devices, fluid pressure actuating devices, fluid pressure actuating system components, etc., can solve problems such as lack of active protection measures, avoid equipment damage accidents, ensure normal operation, Achieving the effect of safe pressure protection

Active Publication Date: 2011-03-30
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology

Therefore, at present, the medium and heavy plate mills in the world use the same control scheme as Baosteel's 5m thick plate rolling mill, and the processing methods for similar faults are mainly based on precise spot inspection and post-event maintenance, and there is a lack of relevant active protection measures

Method used

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  • Device and method for controlling safe pressure of horizontal balance system of rolling mill
  • Device and method for controlling safe pressure of horizontal balance system of rolling mill
  • Device and method for controlling safe pressure of horizontal balance system of rolling mill

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Embodiment Construction

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Such as figure 1 and figure 2 As shown, a preferred structure of the device for controlling the safety pressure of the horizontal balance system of a rolling mill in the present invention includes an electric control system P and a hydraulic actuator system connected to it through a data line.

[0043] The electrical control system P includes:

[0044] CPU15 calculates the pressure reference value according to the control mode of the rolling mill;

[0045] The PI regulator 16 is connected to the CPU 15, receives the pressure reference value sent by the CPU, and performs proportional-integral adjustment on the pressure reference value to realize pressure closed-loop control;

[0046] The slope generator 17 is connected to the PI regulator 16, and performs corresponding compensation control for the current peak mode according...

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Abstract

The invention discloses a device for controlling the safe pressure of a horizontal balance system of a rolling mill. The device comprises an electric control system and a hydraulic execution system connected with the electric control system through a data line, the electric control system comprises a CPU (Central Processing Unit), a PI (Proportional Integral) regulator, a amplitude-limiting generator, an input / output board and a pressure flow conversion module, can calculate corresponding pressure values according to different cascading modes of the rolling mill and then limit the amplitude so as to output minimum balance force. Accordingly, the invention also discloses a method for controlling the safe pressure of the horizontal balance system of the rolling mill. The method is simple and convenient to operate and can ensure the long-term safe and stable operation of the system.

Description

technical field [0001] The present invention relates to a device and method used in the metal rolling process, in particular to a control device and method specially suitable for a metal rolling mill or its processed products. Background technique [0002] At present, the horizontal balance system of the main shaft of the finishing mill in the metallurgical industry mostly adopts the pressure closed-loop control method. The actual pressure value of the system depends on the analog pressure switch for corresponding detection. When the pressure detection components are damaged, the logic protection will be triggered. The system has high requirements on control accuracy. Due to the drift of the calibration point of the pressure detection components and the unstable working state, etc., false pressure values ​​or abnormal pressure fluctuations are often generated, and because this situation cannot be monitored and protected by technical means, often lead to unpredictable consequ...

Claims

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Application Information

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IPC IPC(8): B21B37/00B21B28/00F15B21/08
Inventor 方英汪鎏张栋仲鉴
Owner BAOSHAN IRON & STEEL CO LTD
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