Patents by Inventor Bernd Leu

Bernd Leu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10167742
    Abstract: A steam cycle for a power station, and to a method for operating, in particular for starting, a steam cycle. The steam cycle has a high-pressure turbine, a condenser and a steam generator. The steam generator is connected to the high-pressure turbine via a first line. Live steam quick-closing valves and live steam regulating valves for supplying the high-pressure turbine are arranged in the direction of the steam flow between the steam generator and the high-pressure turbine. A starting line is arranged downstream of the high-pressure turbine in the direction of the steam flow, the starting line connecting a waste steam region downstream of the high-pressure turbine with the condenser. At least one regulator regulates a closing of a starting valve for sealing the starting line, and an opening of the live steam valve, depending on the rotational speed, a temperature and load state of the high-pressure turbine.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: January 1, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bernd Leu, Martin Ophey, Klaus Rothe, David Veltmann, Kai Brune, Matthias Heue, Rudolf Pötter, Michael Schütz
  • Patent number: 9951657
    Abstract: A module for a thermal power plant for condensing expelled vapors and cooling turbine effluent from the drained turbine includes a first unit designed to condense expelled vapors as well as a second unit designed to cool the turbine effluent, condensate from the first unit being transferable to the second unit.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: April 24, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Peter Bergmann, Rachid Dhima, Svea Guntermann, Bernd Leu, Kakhi Naskidashvili, Stefan Riemann
  • Publication number: 20170044935
    Abstract: A steam cycle for a power station, and to a method for operating, in particular for starting, a steam cycle. The steam cycle has a high-pressure turbine, a condenser and a steam generator. The steam generator is connected to the high-pressure turbine via a first line. Live steam quick-closing valves and live steam regulating valves for supplying the high-pressure turbine are arranged in the direction of the steam flow between the steam generator and the high-pressure turbine. A starting line is arranged downstream of the high-pressure turbine in the direction of the steam flow, the starting line connecting a waste steam region downstream of the high-pressure turbine with the condenser. At least one regulator regulates a closing of a starting valve for sealing the starting line, and an opening of the live steam valve, depending on the rotational speed, a temperature and load state of the high-pressure turbine.
    Type: Application
    Filed: April 16, 2015
    Publication date: February 16, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventors: Bernd Leu, Martin Ophey, Klaus Rothe, David Veltmann, Kai Brune, Matthias Heue, Rudolf Pötter, Michael Schütz
  • Publication number: 20160245124
    Abstract: A module for a thermal power plant for condensing expelled vapors and cooling turbine effluent from the drained turbine includes a first unit designed to condense expelled vapors as well as a second unit designed to cool the turbine effluent, condensate from the first unit being transferable to the second unit.
    Type: Application
    Filed: September 18, 2014
    Publication date: August 25, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Peter Bergmann, Rachid Dhima, Svea Guntermann, Bernd Leu, Kakhi Naskidashvili, Stefan Riemann
  • Patent number: 8925321
    Abstract: A steam power plant is provided. The steam power plant includes a bypass pipeline which connects the fresh steam line flow to the exhaust steam line, wherein a bypass steam cooler is disposed in the bypass pipeline. In the event of an emergency stop, or a startup, or a shutdown, the bypass steam cooler cools the steam flowing into the bypass pipeline, whereby cheaper materials may be used for the bypass pipeline.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: January 6, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bernd Leu, Andreas Logar, Heinz Lötters, Stephan Minuth
  • Publication number: 20110167827
    Abstract: A steam power plant is provided. The steam power plant includes a bypass pipeline which connects the fresh steam line flow to the exhaust steam line, wherein a bypass steam cooler is disposed in the bypass pipeline. In the event of an emergency stop, or a startup, or a shutdown, the bypass steam cooler cools the steam flowing into the bypass pipeline, whereby cheaper materials may be used for the bypass pipeline.
    Type: Application
    Filed: September 16, 2009
    Publication date: July 14, 2011
    Inventors: Bernd Leu, Andreas Loger, Heinz Lötters, Stephan Minuth