FIELD: machine building.
SUBSTANCE: single-cylinder extraction turbine for a combined-cycle plant with a loop circuit of steam flow in a cylinder, high-pressure steam supply, low-pressure steam supply and two controlled heating steam extractions. Low-pressure steam is supplied with the pressure increased to the pressure of production steam extraction to a chamber of the inter-housing space. After the flow is turned through 180°, to the same chamber there supplied is the steam that passed the stages of the high- pressure part, which are located in the inner housing. Therefore, the loop circuit of steam flow in the cylinder, supply and production steam extraction from the chamber of the inter-housing space of the single-cylinder turbine is arranged for a combined-cycle plant rated at 60 to 120 MW.
EFFECT: providing strength reliability of a design, compactness and improving manoeuvrability of a turbine.
2 cl, 1 dwg
