Automatic load and vacuum sensitive exhaust hood spray system
    3.
    发明授权
    Automatic load and vacuum sensitive exhaust hood spray system 失效
    自动负载和真空敏感排气罩喷雾系统

    公开(公告)号:US3885822A

    公开(公告)日:1975-05-27

    申请号:US48193474

    申请日:1974-06-21

    IPC分类号: F01D21/00 F01D25/30 F01D5/00

    CPC分类号: F01D21/00 F01D25/305

    摘要: In order to provide temperature control for the exhaust hood region of low pressure turbines, the exhaust hood sprays are activated in response to measured load and steam exhaust pressure. During start-up of the generator, the sprays always are turned on. During normal operation, the status of the sprays depends on the relative amounts of load and vacuum pressure. If the load is less than 10 percent, the sprays are always on, and if the load is greater than 25 percent, they are always off. In the range between 10 and 25 percent load, the status of the sprays depends both upon load and vacuum. In that range, if the vacuum is less than 26 inches Hg., the sprays will be on, and if the vacuum is greater than 28 1/2 inches Hg., they are off. Between 28 1/2 and 26 inches vacuum pressure for the 10 percent to 25 percent load, the status of the sprays depends upon a combination of the two factors.

    摘要翻译: 为了为低压涡轮机的排气罩区域提供温度控制,排气罩喷射器响应于测量的负载和蒸汽排气压力而被激活。 在启动发电机时,始终打开喷雾器。 在正常运行中,喷雾状态取决于负载和真空压力的相对量。 如果负载小于10%,喷雾器总是打开,如果负载大于25%,它们总是关闭。 在10至25%负载范围内,喷雾状态取决于负载和真空度。 在该范围内,如果真空度小于26英寸汞柱,则喷雾器将打开,如果真空度大于281/2英寸汞柱,则它们熄灭。 在281/2和26英寸之间的真空压力为10%至25%的负载,喷雾的状态取决于两个因素的组合。