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Production process for a rotor

A rotor and process technology, applied in the field of rotor production, can solve problems such as uncontrollability, expensive welding process, and complex high-quality root joints.

Active Publication Date: 2014-12-24
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] DE 23 24 388 states that producing a high quality root seam in the case of a vertical rotor axis requires a complex and expensive welding process and that technical difficulties, in addition to uncontrollability, can arise when large rotors are mounted vertically
A further disadvantage presented in DE 23 24 388 is that the rotor has to be transferred from a vertical position to a horizontal position in a warm state by a known process in which all the discs are sequentially assembled in the vertical position of the rotor and welded by root welds together

Method used

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  • Production process for a rotor
  • Production process for a rotor
  • Production process for a rotor

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Embodiment Construction

[0053] figure 1 is a schematic diagram of the first production step, in which the rough turning of the first part or individual disc is carried out. A disk is to be understood as meaning an axial section of the rotor 2 with respect to the longitudinal axis A of the rotor 2, wherein the axial length of the disk can also be greater than its diameter, such that it is also entirely possible for the disk to be a drum-shaped rotor element. The disc preferably has a central hole. A disc of this type is clamped approximately horizontally in the machine for rough turning axially with respect to the longitudinal axis A of said disc, preferably between two jaws. The disc is preferably free to rotate about its longitudinal axis A while it is clamped in the relevant machine.

[0054] figure 2 is a schematic illustration of the second and third production steps, or construction of the rotor half 1a from individual discs, and the first welding process. Contrary to the recommendation in ...

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Abstract

A process is provided for producing a rotor which is made by welding together disk-shaped and / or drum-shaped elements, in particular disks, wherein a device is used to join the disks together axially in sequence along a longitudinal axis and the disks are welded in a two-stage welding process. As they are joined together, the disks are stacked axially in the vertical direction. A first welding process takes place in a vertical orientation of the stacked disks, followed by a second welding process in a horizontal orientation of the stacked disks.

Description

technical field [0001] The invention relates to a process for producing a rotor, in particular a generator or turbine rotor for generating and / or converting kinetic and / or electrical energy. Background technique [0002] It is known to produce rotors for large turbines of steam or gas turbines by welding together individual, machined discs to form a unit. A prior art conventional procedure for producing rotors is described, for example, in H 595 011. According to this document, the rotor is assembled by joining together the individual discs in a stepwise manner. In this process, two discs to be bonded are first pressed against each other, heated and then welded together. Then, incrementally install more discs by repeating the three steps described until the entire rotor is complete. All steps are carried out in a common heating apparatus. EP 0 604 754 A1 discloses a process for producing a turbine rotor from individual standardized rotor parts which have been produced si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D5/06B23K9/16B23K9/18B23P15/00B23K28/02
CPCF01D5/063H02K15/02B23K9/0026Y10T29/49316Y10T29/4932Y10T29/49321
Inventor S·凯勒A·哈特曼
Owner GENERAL ELECTRIC TECH GMBH