公开(公告)号：US06655322B1

公开(公告)日：2003-12-02

申请号：US10219318

申请日：2002-08-16

申请人： Douglas A. Godwin ,  David A. Johnson

发明人： Douglas A. Godwin ,  David A. Johnson

IPC分类号： F22B3718

CPC分类号： F22B37/565

摘要： The present invention relates to a method for automatically maintaining the concentration of scale forming minerals in boiler water for boiler systems utilizing bimodal feedwater pumps that deliver a substantially constant feedwater flow to the boiler drum when activated. According to the present invention, the feedwater supply pump and blowdown rate control valve are synchronized to remove boiler water at a predetermined rate when the feedwater pump is activated. The present invention thereby provides a simplified and less expensive method for controlling the concentration of dissolved solids in boiler water despite variations in the steam loads and/or other boiler operation parameters.

摘要翻译： 本发明涉及一种在锅炉系统的锅炉水中自动维持水垢形成矿物质的浓度的方法，该方法利用双模式给水泵，其在启动时将基本上恒定的给水流量传递给锅炉鼓。 根据本发明，当给水泵启动时，给水供给泵和排污速率控制阀被同步以以预定的速率移除锅炉水。 因此，本发明提供了一种简化且较便宜的方法，用于控制锅炉水中的溶解固体的浓度，尽管蒸汽负载和/或其他锅炉操作参数的变化。