Abstract: A turbomachine includes a first turbine portion and a second turbine portion. A flow splitter assembly is coupled between the first and second turbine portions. The flow splitter assembly includes a first end portion including a first mounting member and a second end portion including a second mounting member. A flow diverting member is positioned between the first and second end portions. The flow diverting member includes a first end section having a first mounting element coupled to the first mounting member and a second end section having a second mounting element coupled to the second mounting member. The flow diverting member includes a flow diverting surface. A first locking member engages the first mounting element and the first mounting member, and a second locking member engages the second mounting element and the second mounting member.

Abstract: Airfoils and grooves on the rotor or carrier for the airfoils have generally complementary dovetail shapes. The airfoils are installed in the grooves by sliding the bases of the airfoils along the circumferential grooves into final circumferential positions. At each circumferential position, a pin is driven between the base of the airfoil and the bottom of the groove to displace the airfoil radially into a final radially secured position taking up the clearance necessary to enable sliding movement of the airfoils about the groove. A first tool is used to drive each pin in a generally tangential direction by hammering on the end of the tool, transmitting an axial force to the pin. When the circumferential clearance of the last installed airfoil is insufficient to permit further use of a tangentially oriented tool to install additional airfoils, a second tool having an angled head is disposed into the groove to engage the pin.

Abstract: Steam turbine buckets have radially projecting tenons received in openings of covers. The covers are provided with a profiled surface, with recesses or radially outwardly projecting teeth, or both, to form a gap between the cover and a stationary component having increased pressure drop with resulting decreased leakage flow and reduced potential for solid particle erosion. In the profiled cover surface, the outer surface of the tenon and outer surface of the cover are machined to form the recesses or teeth, affording a flush cover/tenon design with improved sealing efficiencies and reduced solid particle erosion.

Abstract: Airfoils and grooves on the rotor or carrier for the airfoils have generally complementary dovetail shapes. The airfoils are installed in the grooves by sliding the bases of the airfoils along the circumferential grooves into final circumferential positions. At each circumferential position, a pin is driven between the base of the airfoil and the bottom of the groove to displace the airfoil radially into a final radially secured position taking up the clearance necessary to enable sliding movement of the airfoils about the groove. A first tool is used to drive each pin in a generally tangential direction by hammering on the end of the tool, transmitting an axial force to the pin. When the circumferential clearance of the last installed airfoil is insufficient to permit further use of a tangentially oriented tool to install additional airfoils, a second tool having an angled head is disposed into the groove to engage the pin.

Abstract: Steam turbine buckets have radially projecting tenons received in openings of covers. The covers are provided with a profiled surface, with recesses or radially outwardly projecting teeth, or both, to form a gap between the cover and a stationary component having increased pressure drop with resulting decreased leakage flow and reduced potential for solid particle erosion. In the profiled cover surface, the outer surface of the tenon and outer surface of the cover are machined to form the recesses or teeth, affording a flush cover/tenon design with improved sealing efficiencies and reduced solid particle erosion.