公开(公告)号：US20150114319A1

公开(公告)日：2015-04-30

申请号：US14523134

申请日：2014-10-24

Applicant: ALSTOM Technology Ltd

Inventor： Paul DROUVOT ,  Torbjörn STENSTRÖM ,  Joerg DIETZMANN ,  François DROUX

IPC: F22D1/32 ,  F22D3/06

CPC classification number: F22D1/325 ,  F01K23/10 ,  F22D3/00 ,  F22D3/06 ,  Y02E20/16

Abstract: The feedwater preheating system includes a feedwater tank and a constant volume recirculation pump. The feedwater tank is adapted to store the feedwater. The feedwater tank includes feed and return lines. The feed line is adapted to feed the feedwater to the HRSG, and the return line enables returning of the feedwater into the feedwater tank. The return line precludes a control valve, and is configured to the feedwater tank to reduce component loss while feedwater recirculation. The constant volume recirculation pump is configured in the feed line to recirculate the feedwater between the HRSG and the feedwater tank. The pump is capable of recirculating the feedwater at constant speed and volume to reduce heat loss while feedwater recirculation, as against the prior art feedwater preheating systems.

Abstract translation: 给水预热系统包括给水箱和恒定体积循环泵。 给水箱适于储存给水。 给水箱包括进料和回流管线。 进料管线适于将进料水供给到HRSG，并且回流管线使得给水回流到给水箱中。 返回管路排除了一个控制阀，并配置给给水箱，以减少给水循环中的部件损失。 恒定体积的再循环泵配置在进料管线中，以使得HRSG和给水箱之间的给水再循环。 与现有技术的给水预热系统相反，该泵能够以恒定速度和体积循环给水，以减少进水循环中的热损失。