Abstract: A seal arrangement is installed between confronting co-planar portions of a low pressure steam turbine exhaust hood and a circular bulkhead that forms part of an exhaust duct structure of a steam turbine module. The seal arrangement forms a vacuum seal between the interior and exterior of the exhaust hood and comprises a flexible gasket in the form of an annular diaphragm. This diaphragm has a radially inner circumferential portion that seals with the bulkhead, a radially outer circumferential portion that seals with the exhaust hood, and a radially median resilient portion. Sealing is achieved by providing radially inner and outer clamping flanges operative to sealingly clamp inner and outer circumferential portions of the gasket to the bulkhead and the exhaust hood respectively.

Abstract: A steam exhaust device for a steam turbine module includes a steam exhaust duct having a steam diffuser and a steam exhaust bottom wall, the steam exhaust duct being delimited by a surface of the steam diffuser configured to guide steam and by a steam exhaust bottom wall. A rigid hub includes one of a circular and a semicircular shape, the steam diffuser being rigidly fixed on the rigid hub. A rigid fastening device is fixed on the rigid hub and configured to support the steam exhaust device on a rigid frame.

Abstract: Module for a steam turbine including a low-pressure module, includes an internal turbine casing able to accommodate at least one set of fixed vanes and a rotor equipped with at least one set of blades, and a slab, the internal turbine casing resting on the slab via at least two bearers secured to said internal turbine casing, the connection between said bearers and the slab is provided by a plurality of mechanical connectors. The connectors each prevent the internal turbine casing from lifting in relation to the slab, and allow the internal turbine casing to slide on the slab.

Abstract: A seal arrangement is installed between confronting co-planar portions of a low pressure steam turbine exhaust hood and a circular bulkhead that forms part of an exhaust duct structure of a steam turbine module. The seal arrangement forms a vacuum seal between the interior and exterior of the exhaust hood and comprises a flexible gasket in the form of an annular diaphragm. This diaphragm has a radially inner circumferential portion that seals with the bulkhead, a radially outer circumferential portion that seals with the exhaust hood, and a radially median resilient portion. Sealing is achieved by providing radially inner and outer clamping flanges operative to sealingly clamp inner and outer circumferential portions of the gasket to the bulkhead and the exhaust hood respectively.

Abstract: A steam exhaust device for a steam turbine module includes a steam exhaust duct having a steam diffuser and a steam exhaust bottom wall, the steam exhaust duct being delimited by a surface of the steam diffuser configured to guide steam and by a steam exhaust bottom wall. A rigid hub includes one of a circular and a semicircular shape, the steam diffuser being rigidly fixed on the rigid hub. A rigid fastening device is fixed on the rigid hub and configured to support the steam exhaust device on a rigid frame.

Abstract: Module for a steam turbine including a low-pressure module, includes an internal turbine casing able to accommodate at least one set of fixed vanes and a rotor equipped with at least one set of blades, and a slab, the internal turbine casing resting on the slab via at least two bearers secured to said internal turbine casing, the connection between said bearers and the slab is provided by a plurality of mechanical connectors. The connectors each prevent the internal turbine casing from lifting in relation to the slab, and allow the internal turbine casing to slide on the slab.