# US 5,701,731 A · Method of servicing generator in combined cycle power plant

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- Number: US 5,701,731 A
- Document ID: US5701731A
- Status: Granted
- Kind: A
- Application number: 08/812,593
- Filed: 1997-03-07
- Granted: 1997-12-30
- Earliest claimed: 1994-08-19
- Assignees: ABB Management AG
- Inventors: Ernst Brem; Roland Ulrich; Peter Werner Stadelmann
- Web page: https://patentgrep.com/patent/US5701731A

## CPC

- F16M 5/00: Engine beds, i.e. means for supporting engines or machines on foundations
- F01D 25/28: Supporting or mounting arrangements, e.g. for turbine casing
- F01D 25/285: {Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures}
- H02K 15/00: Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K 15/02: of stator or rotor bodies
- H02K 15/50: Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15/38)
- F05D 2230/60: Assembly methods
- Y02E 20/16: Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y10T 29/4973: Replacing of defective part
- F16M: FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A combined installation configured as a single-shaft installation with common shafting (1) consists essentially of a gas turbine, a steam turbine, the generator (10), which is located between them, and the associated auxiliary systems (12). The generator (10) and the associated auxiliary systems (12) are arranged on a slab (8) which can be displaced transverse to the common shafting (1).

## Claims

### Claim 1

A method for displacing the generator of an installation with common shafting having a gas turbine, a steam turbine and a generator between the gas turbine and the steam turbine, the installation having a slab supporting the generator, including the steps of:
(a) decoupling the generator from the common shafting; and
(b) sliding the slab laterally to allow the rotor of the generator to be removed from the generator.

### Claim 2 (depends on 1)

The method according to claim 1 including removing the rotor from the generator.