Patents by Inventor Flor Del Carmen Rivas
Flor Del Carmen Rivas 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).
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Patent number: 8419349Abstract: A steam turbine and a start-up system for a steam turbine are disclosed comprising: a plurality of stages, a steam path through the plurality of stages, an inlet port for introducing steam to a first stage, an exhaust port at a last stage for allowing exhaust to exit the steam turbine, an admission port for allowing steam to enter the steam path at a location downstream from the inlet port, and a ventilator port for allowing steam to exit the steam path, the ventilator port located upstream of the admission port to create a reverse flow of steam towards the ventilator port from the admission port.Type: GrantFiled: August 12, 2009Date of Patent: April 16, 2013Assignee: General Electric CompanyInventors: Flor del Carmen Rivas Cortes, William Thomas Parry
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Patent number: 8414252Abstract: A cooling path is defined through a double-flow steam turbine. The steam turbine includes a generator end and a turbine end and a double-flow tub diaphragm disposed axially between the generator end and the turbine end. A first stage of the steam turbine includes a plurality of first stage nozzles and a plurality of first stage buckets, and a steam path is defined from an inlet region, through the turbine end, to a steam outlet. The cooling path includes cooling holes in the tub diaphragm and root radial seals permitting steam flow beneath the tub diaphragm and around the first stage nozzles and back into the steam path before the first stage buckets.Type: GrantFiled: January 4, 2010Date of Patent: April 9, 2013Assignee: General Electric CompanyInventors: Flor Del Carmen Rivas, Howard Brilliant, Kenneth Michael Koza, Vishwas Kumar Pandey
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Patent number: 8317458Abstract: A steam turbine includes a turbine rotor, a generator end having a generator end first stage with a first reaction, and a turbine end having a turbine end first stage with a second reaction not equal to the first reaction. The steam turbine includes a tub section disposed between the generator end and the turbine end, the turbine rotor and the tub section defining an annulus therebetween. A difference between the first reaction and second reaction is capable of urging a steam flow through the annulus for reducing a temperature of the turbine rotor. A method of cooling the turbine rotor is also disclosed.Type: GrantFiled: February 28, 2008Date of Patent: November 27, 2012Assignee: General Electric CompanyInventors: Flor Del Carmen Rivas, William Thomas Parry, Jon-Paul James Cronier
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Patent number: 8186935Abstract: A steam turbine includes a casing including a steam inlet and an exhaust, the casing enclosing operative structure of the steam turbine; a valve controlling introduction of a steam flow at a location of the steam turbine to impact an enthalpic condition of steam exiting the exhaust; and a controller controlling operation of the valve to attain a desired enthalpic condition of steam exiting the exhaust. Controlling operation of the valve allows for attainment of a desired enthalpic condition of the steam exiting the exhaust for use in another industrial process without having to modify the steam turbine structure.Type: GrantFiled: January 12, 2009Date of Patent: May 29, 2012Assignee: General Electric CompanyInventors: Flor Del Carmen Rivas Cortés, Nestor Hernandez, Kurt Neal Laurer, William Thomas Parry
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Patent number: 8096748Abstract: A method of cooling a double flow steam turbine includes supplying steam flow to each nozzle of the sections of the turbine; reversing a portion of each steam flow to provide a reverse steam flow from an aft side to a forward side of each section. Each reverse steam flow is directed to an annular space between a rotor and a tub. The method further includes removing the reverse steam flows through a pipe, the pipe having a first end at the annular space at a first pressure and a second end at a second pressure that is lower than the first pressure. A double flow steam turbine, includes a pair of nozzles, each nozzle being provided at a section of the turbine; a rotor supporting buckets of the sections; a tub supporting the pair of nozzles; and a pipe extending from an annular space between the tub and the rotor. The pipe has a first end at the annular space and second end. A pressure at the first end of the pipe is greater than a pressure at the second end.Type: GrantFiled: May 15, 2008Date of Patent: January 17, 2012Assignee: General Electric CompanyInventors: Flor Del Carmen Rivas, Nestor Hernandez
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Publication number: 20110164957Abstract: A cooling path is defined through a double-flow steam turbine. The steam turbine includes a generator end and a turbine end and a double-flow tub diaphragm disposed axially between the generator end and the turbine end. A first stage of the steam turbine includes a plurality of first stage nozzles and a plurality of first stage buckets, and a steam path is defined from an inlet region, through the turbine end, to a steam outlet. The cooling path includes cooling holes in the tub diaphragm and root radial seals permitting steam flow beneath the tub diaphragm and around the first stage nozzles and back into the steam path before the first stage buckets.Type: ApplicationFiled: January 4, 2010Publication date: July 7, 2011Inventors: Flor Del Carmen Rivas, Howard Brilliant, Kenneth Michael Koza, Vishwas Kumar Pandey
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Publication number: 20110038711Abstract: A steam turbine and a start-up system for a steam turbine are disclosed comprising: a plurality of stages, a steam path through the plurality of stages, an inlet port for introducing steam to a first stage, an exhaust port at a last stage for allowing exhaust to exit the steam turbine, an admission port for allowing steam to enter the steam path at a location downstream from the inlet port, and a ventilator port for allowing steam to exit the steam path, the ventilator port located upstream of the admission port to create a reverse flow of steam towards the ventilator port from the admission port.Type: ApplicationFiled: August 12, 2009Publication date: February 17, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Flor del Carmen Rivas Cortes, William Thomas Parry
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Publication number: 20100178156Abstract: A steam turbine includes a casing including a steam inlet and an exhaust, the casing enclosing operative structure of the steam turbine; a valve controlling introduction of a steam flow at a location of the steam turbine to impact an enthalpic condition of steam exiting the exhaust; and a controller controlling operation of the valve to attain a desired enthalpic condition of steam exiting the exhaust. Controlling operation of the valve allows for attainment of a desired enthalpic condition of the steam exiting the exhaust for use in another industrial process without having to modify the steam turbine structure.Type: ApplicationFiled: January 12, 2009Publication date: July 15, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Flor Del Carmen Rivas Cortes, Nestor Hernandez, Kurt Neal Laurer, William Thomas Parry
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Publication number: 20090285670Abstract: A method of cooling a double flow steam turbine includes supplying steam flow to each nozzle of the sections of the turbine; reversing a portion of each steam flow to provide a reverse steam flow from an aft side to a forward side of each section. Each reverse steam flow is directed to an annular space between a rotor and a tub. The method further includes removing the reverse steam flows through a pipe, the pipe having a first end at the annular space at a first pressure and a second end at a second pressure that is lower than the first pressure. A double flow steam turbine, includes a pair of nozzles, each nozzle being provided at a section of the turbine; a rotor supporting buckets of the sections; a tub supporting the pair of nozzles; and a pipe extending from an annular space between the tub and the rotor. The pipe has a first end at the annular space and second end. A pressure at the first end of the pipe is greater than a pressure at the second end.Type: ApplicationFiled: May 15, 2008Publication date: November 19, 2009Inventors: Flor Del Carmen Rivas, Nestor Hernandez
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Publication number: 20090217673Abstract: Disclosed is a steam turbine including a turbine rotor, a generator end having a generator end first stage with a first reaction, and a turbine end having a turbine end first stage with a second reaction not equal to the first reaction. The steam turbine includes a tub section disposed between the generator end and the turbine end, the turbine rotor and the tub section defining an annulus therebetween. A difference between the first reaction and second reaction is capable of urging a steam flow through the annulus for reducing a temperature of the turbine rotor. A method of cooling the turbine rotor is also disclosed.Type: ApplicationFiled: February 28, 2008Publication date: September 3, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Flor Del Carmen Rivas, William Thomas Parry, Jon-Paul James Cronier
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Patent number: 7344357Abstract: A method for assembling at least one seal assembly to a turbine having a casing extending at least partially around a rotor is provided. The method includes coupling the seal assembly to the casing such that the seal assembly extends into a fluid flow passage defined between the rotor and the casing and coupling at least one spring between the seal assembly and the casing to bias each seal assembly.Type: GrantFiled: September 2, 2005Date of Patent: March 18, 2008Assignee: General Electric CompanyInventors: Bernard Arthur Couture, Jr., Flor Del Carmen Rivas, Mark Edward Kelly, Jason Paul Mortzheim
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Patent number: 7056088Abstract: A turbine comprises an oil deflector including at least one set of seal rings, and a shaft including an annular step. The step includes a circumferential surface in proximity to the seal rings of the oil deflector and a side surface extending radially from a center portion of the shaft and defining a groove positioned radially underneath the circumferential surface.Type: GrantFiled: April 21, 2004Date of Patent: June 6, 2006Assignee: General Electric CompanyInventors: Flor Del Carmen Rivas, Gene David Palmer, John Cleland Lavash