Patents by Inventor James C. Bellows

James C. Bellows 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: 10603132
    Abstract: A lighthead identification system for controlling lightheads of a surgical lighting system. The lighthead identification system includes illuminated indicator lights that visually indicate to an operator that an associated lighthead has been selected for adjusting parameter settings on a user interface.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: March 31, 2020
    Assignee: American Sterilizer Company
    Inventors: Michael Hollopeter, Damon Jurkiewicz, James A. Petrucci, Lance C. Bellows
  • Patent number: 9394618
    Abstract: Methods and systems are disclosed for removing cuprous oxide deposits from a copper-containing water-based cooling system, such as those used to cool stators in industrial generators, without disrupting operation of the cooling system. A complexing agent, such as a 1,10-phenanthroline, e.g., 2,9-dimethyl-1,10-phenanthroline (neocuproine), a 2,2-bipyridine compound, or the like can be introduced into the coolant fluid to facilitate dissolution of the deposits by forming a complex with the cuprous ions. The complexing agent can be dissolved in an alcohol at a concentration of about 4-5%, and then added to the coolant fluid to a concentration of about 6e-3 M or less to avoid undesirable precipitation of the agent. The complexing agent can be recovered by flowing the coolant mixture through an adsorbent material such as activated carbon, and the copper can be removed from the agent by reacting it with sodium sulfide.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: July 19, 2016
    Assignee: SIEMENS ENERGY, INC.
    Inventors: James C. Bellows, Christopher D. Mize
  • Patent number: 8783043
    Abstract: A combined cycle power generation system (10) includes a steam turbine (14, 16, 18), a combustion system (12) including a compressor (24), a combustion chamber (26), a gas turbine (28), and a HRSG (20) to generate steam with energy from the combustion turbine. A flow line (60, 70) passes superheated steam into the combustion chamber. In an associated method a first source of power is provided via a combustion process having a variable reaction temperature in a first turbine. A second source of power is provided via a second turbine. Components of the system are placed in a mode of increasing power output with steam generated from the HRSG, during which a portion of the steam is provided into a combustion chamber associated with operation of the second turbine.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: July 22, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: James C. Bellows
  • Patent number: 8539750
    Abstract: A power generation system (11) and method of operating such a system (11) including a steam turbine (14). In one embodiment a HRSG (20) includes an evaporator (127) coupled to receive condensate from the steam turbine (14), and a superheater (132) coupled to receive output from the evaporator (127). The HRSG (20) generates steam with thermal energy received from a combustion turbine (28). A flash tank (9) receives water heated in the HRSG (20), outputs a first portion of the water as steam, and outputs a second portion of the water as liquid. A flow line (134) passes steam (51) from the flash tank (9) to a combustion chamber (26) in the combustion turbine (28) to provide power augmentation.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: September 24, 2013
    Assignee: Siemens Energy, Inc.
    Inventors: James C. Bellows, Frederick W. Shoemaker
  • Patent number: 8266909
    Abstract: A power plant including a steam turbine, and a steam turbine exhaust duct configured to deliver uncontaminated fluid from the steam turbine to downstream components of the power plant. The steam turbine exhaust duct includes a steam turbine exhaust duct isolation valve selectively configured to prevent fluid communication between the steam turbine exhaust duct and the downstream components of the power plant, and a steam turbine exhaust duct vent with a steam turbine exhaust duct vent valve. The steam turbine exhaust duct vent is configured to deliver contaminated fluid from the steam turbine exhaust duct to a fluid sink upon opening of the exhaust duct vent valve.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: September 18, 2012
    Assignee: Siemens Energy, Inc.
    Inventors: Gerald J. Feller, James C. Bellows, Teri J. Robertson
  • Patent number: 8146363
    Abstract: A method of substantially preventing contaminants from entering a condenser adapted for use within a steam generating system. A condenser is provided. Steam or a combination of water and steam is passed into the condenser, the condenser operating in a normal mode if a pressure in a control area is equal to or greater than a predefined pressure and operating in a non-normal mode if the pressure in the control area is less than the predefined pressure. An inert gas is injected into the condenser if a pressure in the control area is less than a holding pressure, the holding pressure being equal to or greater than the predefined pressure.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: April 3, 2012
    Assignee: Siemens Energy, Inc.
    Inventor: James C. Bellows
  • Patent number: 8112997
    Abstract: A power generating system including a working fluid circuit. The power generating system includes a condenser system in the working fluid circuit and a condensate polisher circuit. The condenser system receives a working fluid that includes steam or a combination of water and steam and condenses at least a portion of the working fluid into a condensate. The condensate has a temperature above a predetermined upper operating temperature. The condensate polisher circuit is branched off from the working fluid circuit and receives and treats said condensate from the working fluid circuit and returns treated condensate to the working fluid circuit. The condensate polisher circuit includes a heat exchanger that reduces the temperature of the condensate at least to the upper operating temperature and a condensate polisher that removes contaminants from the condensate to bring the condensate to a predetermined purity.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: February 14, 2012
    Assignee: Siemens Energy, Inc.
    Inventor: James C. Bellows
  • Patent number: 8069667
    Abstract: A power generating system comprises a condenser and a deaerator apparatus. The condenser condenses a working fluid into a condensate and operates at an internal pressure above ambient pressure during a normal operating mode. The deaerator apparatus uses steam to remove contaminants from the condensate to bring the condensate to a desirable purity. The deaerator apparatus is deactivated during a typical operating state of the power generating system such that the condensate bypasses the deaerator apparatus. The deaerator apparatus is activated during a non-typical operating state of the power generating system such that the condensate passes into the deaerator apparatus wherein contaminants can be removed from the condensate. The typical operating state of the power generating system occurs when the condensate comprises a desirable purity and the non-typical operating state of the power generating system occurs when the condensate comprises an undesirable purity.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: December 6, 2011
    Assignee: Siemens Energy, Inc.
    Inventor: James C. Bellows
  • Publication number: 20110265444
    Abstract: A power generation system (11) and method of operating such a system (11) including a steam turbine (14). In one embodiment a HRSG (20) includes an evaporator (127) coupled to receive condensate from the steam turbine (14), and a superheater (132) coupled to receive output from the evaporator (127). The HRSG (20) generates steam with thermal energy received from a combustion turbine (28). A flash tank (9) receives water heated in the HRSG (20), outputs a first portion of the water as steam, and outputs a second portion of the water as liquid. A flow line (134) passes steam (51) from the flash tank (9) to a combustion chamber (26) in the combustion turbine (28) to provide power augmentation.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 3, 2011
    Inventors: James C. Bellows, Frederick W. Shoemaker
  • Patent number: 7954323
    Abstract: A method of increasing service interval periods in a steam turbine by neutralizing sodium hydroxide in contaminated steam in a high temperature and a high pressure portion of a steam turbine by placing a protective covering over at least a portion of each of the bolts of a nozzle block assembly. The protective covering neutralizes contaminants in contaminated steam to reduce stress cracking of the bolts during steam turbine operation, and thus extend the useful life of the bolts and reduce the need for service work to repair or replace damaged bolts.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: June 7, 2011
    Assignee: Siemens Energy, Inc.
    Inventors: James C. Bellows, Sudhir Rajagopalan, James W. Dorow
  • Patent number: 7901177
    Abstract: A pump configured to receive fluids through an inlet and direct those fluids in two directions through two or more fluid discharge outlets, wherein the fluids are discharged with different fluid characteristics, such as different pressures or flow rates. In one embodiment, the pump may include first and second pumping chambers for pumping fluids from the pump with different pressures or flow rates, or both, eliminating the need for two pumps. The fluid may be exhausted from the pump through a first fluid discharge outlet and a second fluid discharge outlet of the pump.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: March 8, 2011
    Assignee: Siemens Energy, Inc.
    Inventor: James C. Bellows
  • Publication number: 20110011057
    Abstract: A combined cycle power generation system (10) includes a steam turbine (14, 16, 18), a combustion system (12) including a compressor (24), a combustion chamber (26), a gas turbine (28), and a HRSG (20) to generate steam with energy from the combustion turbine. A flow line (60, 70) passes superheated steam into the combustion chamber. In an associated method a first source of power is provided via a combustion process having a variable reaction temperature in a first turbine. A second source of power is provided via a second turbine. Components of the system are placed in a mode of increasing power output with steam generated from the HRSG, during which a portion of the steam is provided into a combustion chamber associated with operation of the second turbine.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 20, 2011
    Inventor: James C. Bellows
  • Publication number: 20100257860
    Abstract: A power plant including a steam turbine, and a steam turbine exhaust duct configured to deliver uncontaminated fluid from the steam turbine to downstream components of the power plant. The steam turbine exhaust duct includes a steam turbine exhaust duct isolation valve selectively configured to prevent fluid communication between the steam turbine exhaust duct and the downstream components of the power plant, and a steam turbine exhaust duct vent with a steam turbine exhaust duct vent valve. The steam turbine exhaust duct vent is configured to deliver contaminated fluid from the steam turbine exhaust duct to a fluid sink upon opening of the exhaust duct vent valve.
    Type: Application
    Filed: April 9, 2009
    Publication date: October 14, 2010
    Applicant: Siemens Energy, Inc.
    Inventors: Gerald J. Feller, James C. Bellows, Teri J. Robertson
  • Publication number: 20100199672
    Abstract: A method of substantially preventing contaminants from entering a condenser adapted for use within a steam generating system. A condenser is provided. Steam or a combination of water and steam is passed into the condenser, the condenser operating in a normal mode a pressure in a control area is equal to or greater than a predefined pressure and in a non-normal mode if the pressure in the control area is less than the predefined pressure. An inert gas is injected into the condenser if a pressure in the control area is less than a holding pressure, the holding pressure being equal to or greater than the predefined pressure.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Applicant: SIEMENS ENERGY, INC.
    Inventor: James C. Bellows
  • Publication number: 20100199670
    Abstract: A power generation plant includes a steam turbine and an electrical generator driven thereby. A condenser is downstream from the steam turbine. Moreover, the power generation plant includes a steam source and an inert gas source. A deaerator downstream from the condenser and is operable to perform deaeration using the inert gas source and is also selectively operable to perform deaeration using the steam source.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Applicant: Siemens Energy, Inc.
    Inventors: Teri J. Robertson, James C. Bellows
  • Publication number: 20100199671
    Abstract: A power generating system comprises a condenser and a deaerator apparatus. The condenser condenses a working fluid into a condensate and operates at an internal pressure above ambient pressure during a normal operating mode. The deaerator apparatus uses steam to remove contaminants from the condensate to bring the condensate to a desirable purity. The deaerator apparatus is deactivated during a typical operating state of the power generating system such that the condensate bypasses the deaerator apparatus. The deaerator apparatus is activated during a non-typical operating state of the power generating system such that the condensate passes into the deaerator apparatus wherein contaminants can be removed from the condensate. The typical operating state of the power generating system occurs when the condensate comprises a desirable purity and the non-typical operating state of the power generating system occurs when the condensate comprises an undesirable purity.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Applicant: SIEMENS ENERGY, INC.
    Inventor: James C. Bellows
  • Patent number: 7689515
    Abstract: A method of evaluating a power plant having a design life based on operating the plant within an allowable chemical exposure range includes accumulating a history of a chemical exposure of a steam generating portion of the power plant. The method also includes determining a remaining life of the plant based on the history of the chemical exposure and assuming continued operation of the plant within the allowable chemical exposure range. The method may also include evaluating an economic value of operating the plant based on the remaining life of the plant.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: March 30, 2010
    Assignee: Siemens Energy, Inc.
    Inventors: James C. Bellows, Fred W. Shoemaker
  • Patent number: 7640724
    Abstract: A steam cycle power plant (10) is provided that may include a steam source generating steam (40), a steam turbine (24) receiving the generated steam and discharging an exhaust steam, a condenser (44) receiving the exhaust steam and an atomizer (60) for injecting water into the exhaust steam downstream of the steam turbine (24) and upstream of a cooling surface of the condenser (44) effective to reduce a backpressure on the steam turbine (24) and improve a heat rate of the steam turbine (24). The atomizer (60) may include a plurality of symmetrical spaced fluid connections (70) and a plurality of atomizing nozzles (62) affixed proximate at least one exhaust end of the steam turbine (24). The power plant (10) may be a combined cycle power plant including a heat recovery steam generator (40) and a gas turbine engine (12).
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: January 5, 2010
    Assignee: Siemens Energy, Inc.
    Inventors: James C. Bellows, Abol H. Moulavi
  • Publication number: 20090266076
    Abstract: A power generating system including a working fluid circuit. The power generating system includes a condenser system in the working fluid circuit and a condensate polisher circuit. The condenser system receives a working fluid that includes steam or a combination of water and steam and condenses at least a portion of the working fluid into a condensate. The condensate has a temperature above a predetermined upper operating temperature. The condensate polisher circuit is branched off from the working fluid circuit and receives and treats said condensate from the working fluid circuit and returns treated condensate to the working fluid circuit. The condensate polisher circuit includes a heat exchanger that reduces the temperature of the condensate at least to the upper operating temperature and a condensate polisher that removes contaminants from the condensate to bring the condensate to a predetermined purity.
    Type: Application
    Filed: February 6, 2009
    Publication date: October 29, 2009
    Applicant: Siemens Energy, Inc.
    Inventor: James C. Bellows
  • Publication number: 20090241544
    Abstract: A method of increasing service interval periods in a steam turbine by neutralizing sodium hydroxide in contaminated steam in a high temperature and a high pressure portion of a steam turbine by placing a protective covering over at least a portion of each of the bolts of a nozzle block assembly. The protective covering neutralizes contaminants in contaminated steam to reduce stress cracking of the bolts during steam turbine operation, and thus extend the useful life of the bolts and reduce the need for service work to repair or replace damaged bolts.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 1, 2009
    Applicant: SIEMENS POWER GENERATION, INC.
    Inventors: James C. Bellows, Sudhir Rajagopalan, James W. Dorow