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§12-1 调节基本原理与自整要求 背压式汽轮机以不同参数的蒸汽向热用户供热,是一种合理的供热方式,带抽汽的背压式汽轮机(简称“抽背机”)能满足这一要求。它分非调整抽汽式及调整抽汽式两种,这种机组在供电的同时可向热用户供应两种参数的热负荷。非调整抽汽式背压机的抽汽量根据用户需要手动调节,它一般为中、低压进汽参数。抽汽量的改变不仅影响汽轮机转速(单机)或电功率(并网),同时也直接影响到背压。高参数的抽背机,当抽汽量频繁变化时,机组
§12-1 Regulating the basic principle and self-adjusting requirements Back-pressure steam turbine with different parameters of the steam to the heating user heating is a reasonable way of heating, with extraction of the back-pressure turbine (referred to as “pumping back” ) To meet this requirement. It is divided into non-adjusted extraction and extraction extraction steam two, this unit in the power supply to the heat user supply two parameters of the heat load. Non-adjusted extraction steam backpressure extraction volume manually adjusted according to user needs, it is generally medium and low pressure into the steam parameters. The change in extraction volume affects not only the turbine speed (stand-alone) or the electric power (grid connection) but also the back pressure directly. High parameters of the pumping machine, when the extraction of frequent changes, the unit