Inverted warm cold starting system of extraction condensing steam turbine generator unit

The utility model discloses an inverted warm cold starting system of an extraction condensing steam turbine generator unit, and belongs to the technical field of combined heat and power generation. The system comprises a main steam main pipe, a steam turbine, a heat supply pipeline and a bypass valve set, the steam inlet end of the steam turbine is connected with the main steam main pipe through apipeline, and the steam exhaust end of the steam turbine is connected with the heat supply pipeline; a bypass valve set is arranged on the heat supply pipeline in parallel and used for controlling cold-state starting of the steam turbine. According to the technical scheme, cold-state impulse starting of the steam turbine can be carried out with low steam parameters, metal thermal shock is reduced, and meanwhile impulse starting time is shortened. 本实用新型公开了一种抽凝汽轮发电机组倒暖冷态开机系统，属于热电联产技术领域。它包括主蒸汽母管、汽轮机、供热管道和旁路阀门组，所述汽轮机的进汽端通过管道与主蒸汽母管相连，其排汽端与供热管道相连；所述供热管道上并联设有旁路阀门组，用于控制汽轮机的冷态启动。本实用新型的技术方案能够以较低的蒸汽参数进行汽轮机的冷态冲转开机，减少金属热冲击，同时缩短冲转