Method and device for mounting and removing a turbine component

Abstract

The disclosure pertains to a mounting arrangement for installing and removing a turbine component. The mounting arrangement has a base cage, a main cage, and an inner structure. The base cage includes an interface for connection to a casing of the turbine, and an interface for connection to the main cage. The main cage includes an inner structure interface for movable connection to the inner structure. The inner structure is arranged at least partly inside the main cage and the inner structure interface is configured to allow a movement of the inner structure along a defined trajectory in the main cage. The inner structure includes a first face of a component interface for holding the turbine component. The disclosure further refers to a method for mounting and removing a turbine component.

1 . A mounting arrangement for installing and removing a turbine component , the mounting arrangement comprising a base cage, a main cage, and an inner structure, wherein the base cage includes a first face of a casing interface for connecting the base cage to a casing of the turbine, and first face of a main cage interface for connection to the main cage, wherein the main cage includes a second face of the main cage interface for connection to the base cage, and a first face of an inner structure interface for movable connection of the inner structure to the main cage, wherein the inner structure is arranged at least partly inside the main cage and has a second face of the inner structure interface for moveable connection to the main cage wherein the inner structure interface is configured to allow a movement of the inner structure along a defined trajectory in the main cage, and wherein the inner structure includes a first face of a component interface for holding the turbine component. 
     
     
         2 . The mounting arrangement according to  claim 1 , further comprising a plurality of base cages is provided, wherein each base cage has its first face of the casing interface adapted for connection to a different section of the casing. 
     
     
         3 . The mounting arrangement according to  claim 1 , wherein the inner structure comprises a sledge. 
     
     
         4 . The mounting arrangement according to  claim 1 , further comprising a rail roller system guides the inner structure inside the main cage with a rail roller pair in vertically top position of the main cage and two rail roller pairs in a lower half of the cage spaced apart from a vertical bottom position or in that the a rail roller system guides the sledge inside the main cage with a rail roller pair in vertically bottom position of the main cage and two rail roller pairs in an upper half of the main cage spaced apart from a vertical top position. 
     
     
         5 . The mounting arrangement according to  claim 4 , wherein the rail roller system comprises two planes spaced apart along a longitudinal axis of the inner structure, with three rail roller pairs in each plane, and wherein the longitudinal axis of the inner structure is adjustable relative to a longitudinal axis of the main cage by adjusting the position of each roller relative to the inner structure in a direction of main load transferred via the respective roller for rollers connected to the inner structure and/or by adjusting the position of each roller relative to the main cage in a direction of main load transferred via the respective roller for rollers connected to the main cage. 
     
     
         6 . The mounting arrangement according to  claim 1 , wherein the fourth interface for connection of the turbine component to the inner structure comprises two planes spaced apart in axial direction of the inner structure. 
     
     
         7 . The mounting arrangement according to  claim 1 , wherein the second interface comprises at least two toggle clamps for quick locking of the interface. 
     
     
         8 . The mounting arrangement according to  claim 1 , wherein the main cage includes a fix point, the inner structure comprises a pivot support and in that a shifting system for moving the inner structure relative to the main cage, is arranged between and connected to the fix point and the pivot support. 
     
     
         9 . The mounting arrangement according to  claim 8 , wherein the shifting system comprises a screw jack system. 
     
     
         10 . The mounting arrangement according to  claim 8 , wherein the shifting system comprises at least one of a manual handle, an electro motor, and a pneumatic motor. 
     
     
         11 . A method for removing a turbine component from a turbine; the method comprising:
 providing a mounting arrangement having a base cage, a main cage, and an inner structure, wherein the base cage comprises a first face of a casing interface for connection of the base cage to a casing of the turbine, and first face of a main cage interface of a main cage interface for connection to the main cage, wherein the main cage comprises a second face of the main cage interface for connection to the base cage, and a first face of an inner structure interface for movable connection of the inner structure to the main cage, wherein the inner structure is arranged at least partly inside the main cage and has a second face of the inner structure interface for moveable connection to the main cage wherein the inner structure interface is configured to allow a movement of the inner structure along a defined trajectory in the main cage, and wherein the inner structure comprises a first face of a component interface for holding the turbine component,   connecting the first face of the casing interface of the base cage to the casing of the turbine,   connecting the second face of the main cage interface of the main cage which is holding the inner structure to the first face of the main cage interface of the base cage,   connecting the turbine component to the inner structure at the component interface,   pulling the turbine component out of the casing by moving the inner structure along a trajectory in the main cage, and   detaching the main cage which is holding the inner structure and turbine component from the casing.   
     
     
         12 . The method according to  claim 11 , further comprising aligning a longitudinal axis of the inner structure with a longitudinal axis of the turbine component before connecting the turbine component to the inner structure at the component interface. 
     
     
         13 . A method for mounting of a turbine component; the method comprising:
 providing a mounting arrangement having a base cage, a main cage, and an inner structure, wherein the base cage comprises a first face of a casing interface for connection of the base cage to a casing of the turbine, and first face of a main cage interface of a main cage interface for connection to the main cage, wherein the main cage comprises a second face of the main cage interface for connection to the base cage, and a first face of an inner structure interface for movable connection of the inner structure to the main cage, wherein the inner structure is arranged at least partly inside the main cage and has a second face of the inner structure interface for moveable connection to the main cage wherein the inner structure interface is configured to allow a movement of the inner structure along a defined trajectory in the main cage, and wherein the inner structure comprises a first face of a component interface for holding the turbine component,   connecting the first face of the casing interface of the base cage to the casing of the turbine,   connecting the turbine component to the inner structure at the component interface   at least partly pulling the turbine component in the main cage by moving the inner structure along a trajectory in the main cage,   connecting the second face of the main cage interface of the main cage which is holding the inner structure and the turbine component to the first face of the main cage interface of the base cage,   pushing the turbine component into the casing by moving the inner structure along a trajectory out of the main cage, and detaching the main cage holding the inner structure from the casing.