Longitudinal arrangement of turbine building of 350 MW NCB unit

The invention relates to longitudinal arrangement of a turbine building of a 350 MW NCB unit. The longitudinal arrangement comprises reasonable system arrangement of a main steam and reheating steam system, a steam turbine bypass system, a water-supply system, a lubricating oil system, a back-heating steam extraction system, a vacuum-pumping system and a condensate system, auxiliary machine equipment selection and turbine building optimization arrangement. A low-pressure cylinder, a steam exhaust device positioned below the low-pressure cylinder, a container type lubricating oil station, a fine chemical treatment device, a condensing water pump, control stations of a self-sealing system, a high-middle pressure cylinder, a steam extraction pipeline, a power generator, a main steam pipeline, a reheating hot-section steam pipeline, a reheating cold-section steam pipeline, an excitation bus, a power generator seal oil container device, a stator cooling water container device, an enclosed bus and an electrical 380 V and 6 kV voltage distribution room are sequentially arranged from a steam turbine to a power generation terminal .