公开(公告)号：US4428190A

公开(公告)日：1984-01-31

申请号：US291084

申请日：1981-08-07

申请人： Lucien Y. Bronicki

发明人： Lucien Y. Bronicki

IPC分类号： F01K3/02 ,  F01K3/04 ,  F01K7/38 ,  F01K23/02 ,  F01K25/10 ,  F01K3/00

CPC分类号： F01K3/04

摘要： A power plant includes a steam boiler that delivers a rated amount of high-pressure steam at rated temperature and pressure to a steam turbine having a high-pressure stage and at least one low-pressure stage driven by low-grade steam exhausted from the high-pressure stage. A main generator, driven by the steam turbine, furnishes electricity to a variable load. When the load decreases below rated value, the boiler operation is maintained, but low-grade steam exhausted from the high-pressure stage of the turbine is diverted from the low-pressure stage to a heat store large enough to accumulate heat during the time that the power plant operates at less than rated load. A waste heat converter, having its own generator, is responsive to the low-grade heat stored in the heat store, and can be operated selectively to furnish electricity to the load to supplement the output of the power plant. The output of the waste heat converter can be used for peak-power purposes, thereby reducing the size of the main power plant, as well as for furnishing low-level power during shutdown of the main power plant. Moreover, when in operation, the boiler and the high-pressure stage of the turbine operate at peak efficiency, which results in reducing the fuel cost of the power plant.

摘要翻译： 一个发电厂包括一个蒸汽锅炉，它在额定温度和压力下将额定数量的高压蒸汽输送到具有高压级的蒸汽轮机和至少一个低压级，由低档蒸汽排出， 压力阶段 由蒸汽轮机驱动的主发电机向可变负载供电。 当负载降低到额定值以下时，保持锅炉操作，但是从涡轮机的高压级排出的低级蒸汽从低压级转移到足够大的热存储器，以在该时间段内积聚热量 发电厂的运行功率小于额定负载。 具有其自身的发电机的废热转换器响应于储存在储热器中的低品位热量，并且可以选择性地操作以向负载供电以补充发电厂的输出。 废热转换器的输出可以用于峰值功率目的，从而减小主电厂的尺寸，以及在主电厂关闭期间提供低电平功率。 此外，在运行中，涡轮机的锅炉和高压级以最高效率运转，从而降低发电厂的燃料成本。