Search International and National Patent Collections

1. (WO2017055002) ACTIVE WET-STEAM CLEANING METHOD FOR STEAM TURBINES

Pub. No.:    WO/2017/055002    International Application No.:    PCT/EP2016/070538
Publication Date: Fri Apr 07 01:59:59 CEST 2017 International Filing Date: Thu Sep 01 01:59:59 CEST 2016
IPC: F01D 25/00
F22B 37/48
Applicants: SIEMENS AKTIENGESELLSCHAFT
PLASMATREAT GMBH
Inventors: EDER, Florian
BUSKE, Christian
GEHRINGER, Walter
HAJE, Detlef
MALEIKA, Marek
NTOURMAS, Felix
Title: ACTIVE WET-STEAM CLEANING METHOD FOR STEAM TURBINES
Abstract:
The invention relates to a steam turbine and to a method for cleaning steam turbines. In the method, a plasma is passed through an aqueous cleaning liquid in an activation step and then said cleaning liquid is evaporated. Even poorly soluble salt coverings are effectively removed from the turbine blades by means of the plasma-activated wet steam. The method can be used during ongoing operation of the steam turbine. In addition, a device for producing the active wet steam is described, which can be installed with a steam turbine or, for example, can be retrofitted in the case of existing steam power plants.