Patent ID: 7681396
Filing Date: 2010-03-23
Classification: F01K,Y02E

Abstract:
1. A steam turbine with heating steam extraction, the turbine comprising: a plurality of turbine sections configured and arranged for high pressure, medium pressure, and low pressure ranges; a common shaft; a plurality of casings; a district heating circuit including two series-connected heaters; wherein the turbine sections are each arranged in a separate casing and connected by the common shaft; wherein the plurality of turbine sections comprises one high pressure turbine having an outlet, at least two medium pressure turbines each having a casing and an outlet connected to one of the two series-connected heaters of the district heating circuit, and at least one low pressure turbine; wherein the casings of said medium pressure turbines are spatially separated; wherein the two medium pressure turbines are connected in parallel; wherein the at least one low pressure turbine comprises at least two low pressure turbines provided in separate casings; wherein the outlet of each of the at least two medium pressure turbines is connected to one of the at least two low pressure turbines; and wherein the at least two low pressure turbines are each adapted to the respective medium pressure turbine.