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1. 发明申请

WO1996030703A1 PROCESS CONTROL, METHOD AND APPARATUS 审中-公开
标题翻译：过程控制，方法和设备
公开(公告)号：WO1996030703A1
公开(公告)日：1996-10-03
申请号：PCT/GB1996000309
申请日：1996-02-14
申请人： BRITISH STEEL PLC , STEVENSON, Tony
发明人： BRITISH STEEL PLC
IPC分类号： F23N05/18
CPC分类号： F23N5/184 , F23N3/082 , F23N2021/04 , F23N2025/04 , F23N2033/08 , F23N2035/06 , F24F11/74
摘要： A process control method is described in which fluid is supplied to a plurality of fluid consumption units by a variable pressure supply, each consumption unit having associated therewith a flow control valve, the method including an initial step of determining the system resistance algorithm of each consumption unit with the control valve associated with that unit in a desired or designed maximum open position, and periodically measuring the fluid flows or fluid demand to consumption units (preferably each such units) calculating the instantaneous system resistance for each unit, selecting the highest such system resistance and modulating the output pressure of the fluid supply in dependants on that highest selected system resistance, and closing the control valves associated with the remaining consumption units to the extent necessary to provide the correct fluid flow supply for those units. By this method, excess pressure form the variable pressure supply is avoided leading to increased efficiency. A suitable application of the method is in the air supply for heaters of a reheat furnace in a steel mill.
摘要翻译：描述了一种过程控制方法，其中通过可变压力供应将流体提供给多个流体消耗单元，每个消耗单元具有流量控制阀，该方法包括确定每次消耗的系统电阻算法的初始步骤将具有与该单元相关联的控制阀的单元设置在期望或设计的最大打开位置，并且周期性地测量流体流量或流体需求量以计算每个单元的瞬时系统阻力的消耗单元（优选地，每个这样的单元），选择最高的这样的系统阻力和调节流体供应的输出压力取决于最高选择的系统阻力，并且关闭与剩余消耗单元相关联的控制阀到为这些单元提供正确的流体流动供应所必需的程度。通过这种方法，避免了形成变压供应的过压，导致效率提高。该方法的合适应用是在钢厂的再热炉的加热器的供气中。

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