公开(公告)号：US12055069B2

公开(公告)日：2024-08-06

申请号：US18237220

申请日：2023-08-23

Applicant: SIEMENS ENERGY, INC.

Inventor： Roger W. Heinig ,  Jeremy P. Jasikiewicz ,  Jeremy T. Marshall ,  Paul Vezzetti

IPC: F01D5/30

CPC classification number: F01D5/3038 ,  F05D2230/60

Abstract: A turbine assembly includes a rotating blade including a T-root. The T-root defines a first engagement surface that is cylindrical, a rotor including a blade groove arranged to receive the rotating blade, the blade groove including a neck portion that defines a second engagement surface and a neck surface that is normal to and intersects the second engagement surface. The second engagement surface is cylindrical, and a relief groove is formed in the neck surface and positioned adjacent the second engagement surface.

公开(公告)号：US20240093615A1

公开(公告)日：2024-03-21

申请号：US18237220

申请日：2023-08-23

Applicant: SIEMENS ENERGY, INC.

Inventor： Roger W. Heinig ,  Jeremy P. Jasikiewicz ,  Jeremy T. Marshall ,  Paul Vezzetti

IPC: F01D5/30

CPC classification number: F01D5/3038 ,  F05D2230/60

Abstract: A turbine assembly includes a rotating blade including a T-root. The T-root defines a first engagement surface that is cylindrical, a rotor including a blade groove arranged to receive the rotating blade, the blade groove including a neck portion that defines a second engagement surface and a neck surface that is normal to and intersects the second engagement surface. The second engagement surface is cylindrical, and a relief groove is formed in the neck surface and positioned adjacent the second engagement surface.

公开(公告)号：US20250052170A1

公开(公告)日：2025-02-13

申请号：US18230850

申请日：2023-08-07

Applicant: SIEMENS ENERGY, INC.

Inventor： El Mahjoub Rasselkorde ,  Jeremy P. Jasikiewicz ,  Larry Himes ,  James Alford

IPC: F01D21/00 ,  G01N29/04 ,  G01N29/22 ,  G01N29/265

Abstract: A nondestructive method for a volumetric examination of a blade root of a turbine blade while the turbine blade is installed in a turbine shaft of a steam turbine includes installing the bracket onto the outer diameter of the turbine shaft where the bracket conforms to the geometry of the turbine blade and turbine shaft, positioning an ultrasonic phased array probe on a platform face of the turbine blade and rotating the bracket around the turbine shaft for generation of a scan of a portion of the blade root, generating a scan of the desired position by directing ultrasonic waves via the ultrasonic phased array probe, and capturing reflected ultrasonic waves by a receiver to generate the scan and comparing the scan to a reference scan of the blade root to determine defects within the blade root.