Patents Assigned to EBARA International Corporation
-
Patent number: 9879904Abstract: A variable speed liquid LNG expander (X1) and a variable speed two-phase LNG expander (X2) in line, downstream from X1. The rotational speed of both expanders can be controlled and changed independent from each other. The speed of expander X1 and expander X2 is determined in such way that the amount of liquid LNG downstream from the PHS compared to the feed gas supply is maximized and the amount of vapor and boil-off downstream of X2 is minimized.Type: GrantFiled: March 26, 2015Date of Patent: January 30, 2018Assignee: EBARA International CorporationInventor: Hans E. Kimmel
-
Patent number: 9631622Abstract: An inducer for vertical flow, cryogenic liquid centrifugal pumps comprising a stationary outer housing portion having an inlet and an outlet, the inlet located at a lower end and the outlet located at an upper end, the housing further having an inner wall portion with one or more spiral vanes projecting outwardly from the inner wall portion, the one or more spiral vanes defining one or more gap regions on the inner wall portion that spiral in a first direction, and an inner rotating impeller mounted on a rotating center shaft, the impeller having at least one curved blade which defines a curved, helicoid plane surface in which the slope of the plane increases as the distance from the center axis increases, the impeller rotating in a second direction which is in counter rotation to the first direction.Type: GrantFiled: August 7, 2013Date of Patent: April 25, 2017Assignee: Ebara International CorporationInventor: Everett Russell Kilkenny
-
Patent number: 9593882Abstract: A cryogenic turbine expander system which consists essentially of a cryogenic liquid pressure vessel, and the vessel further accommodating a turbine expander, an internal bypass configuration, which are operable in parallel, a three-way valve to direct incoming high pressure liquefied gas flow to the turbine expander, or the internal bypass configuration, which further consists a Joule-Thomson valve, when the turbine expander is not operational.Type: GrantFiled: March 24, 2014Date of Patent: March 14, 2017Assignee: EBARA International CorporationInventor: Joel V. Madison
-
Patent number: 9461519Abstract: An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.Type: GrantFiled: August 1, 2013Date of Patent: October 4, 2016Assignee: EBARA International CorporationInventor: Joel V. Madison
-
Patent number: 9341191Abstract: An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.Type: GrantFiled: August 1, 2013Date of Patent: May 17, 2016Assignee: EBARA International CorporationInventor: Joel V. Madison
-
Patent number: 9341085Abstract: A power recovery system using the Rankine power cycle incorporating a two-phase liquid-vapor expander with an electric generator which further consists of a heat sink, a heat source, a working fluid to transport heat and pressure energy, a feed pump and a two-phase liquid-vapor expander for the working fluid mounted together with an electric generator on one rotating shaft, a first heat exchanger to transport heat from the working fluid to the heat sink, a second heat exchanger to transport heat from the heat source to the working fluid.Type: GrantFiled: February 18, 2015Date of Patent: May 17, 2016Assignee: EBARA International CorporationInventor: Joel V. Madison
-
Patent number: 9335092Abstract: A cryogenic turbine expander system which consists essentially of a cryogenic liquid pressure vessel, and the vessel further accommodating a turbine expander, an internal bypass configuration, which are operable in parallel, a three-way valve to direct incoming high pressure liquefied gas flow to the turbine expander, or the internal bypass configuration, which further consists a Joule-Thomson valve, when the turbine expander is not operational.Type: GrantFiled: March 24, 2014Date of Patent: May 10, 2016Assignee: EBARA International CorporationInventor: Joel V. Madison
-
Publication number: 20150260058Abstract: A power recovery system using the Rankine power cycle incorporating a two-phase liquid-vapor expander with an electric generator which further consists of a heat sink, a heat source, a working fluid to transport heat and pressure energy, a feed pump and a two-phase liquid-vapor expander for the working fluid mounted together with an electric generator on one rotating shaft, a first heat exchanger to transport heat from the working fluid to the heat sink, a second heat exchanger to transport heat from the heat source to the working fluid.Type: ApplicationFiled: February 18, 2015Publication date: September 17, 2015Applicant: Ebara International CorporationInventor: Joel V. Madison
-
Patent number: 8991208Abstract: A variable speed liquid LNG expander (X1) and a variable speed two-phase LNG expander (X2) in line, downstream from X1. The rotational speed of both expanders can be controlled and changed independent from each other. The speed of expander X1 and expander X2 is determined in such way that the amount of liquid LNG downstream from the PHS compared to the feed gas supply is maximized and the amount of vapor and boil-off downstream of X2 is minimized.Type: GrantFiled: May 30, 2013Date of Patent: March 31, 2015Assignee: Ebara International CorporationInventor: Hans E. Kimmel
-
Patent number: 8963354Abstract: A power recovery system using the Rankine power cycle incorporating a two-phase liquid-vapor expander with an electric generator which further consists of a heat sink, a heat source, a working fluid to transport heat and pressure energy, a feed pump and a two-phase liquid-vapor expander for the working fluid mounted together with an electric generator on one rotating shaft, a first heat exchanger to transport heat from the working fluid to the heat sink, a second heat exchanger to transport heat from the heat source to the working fluid.Type: GrantFiled: January 16, 2014Date of Patent: February 24, 2015Assignee: Ebara International CorporationInventor: Joel V. Madison
-
Patent number: 8823189Abstract: A power recovery system using the Rankine power cycle incorporating a two-phase liquid-vapor expander with an electric generator which further consists of a heat sink, a heat source, a working fluid to transport heat and pressure energy, a feed pump and a two-phase liquid-vapor expander for the working fluid mounted together with an electric generator on one rotating shaft, a first heat exchanger to transport heat from the working fluid to the heat sink, a second heat exchanger to transport heat from the heat source to the working fluid.Type: GrantFiled: January 16, 2014Date of Patent: September 2, 2014Assignee: Ebara International CorporationInventor: Joel V. Madison
-
Publication number: 20140183870Abstract: A power recovery system using the Rankine power cycle incorporating a two-phase liquid-vapor expander with an electric generator which further consists of a heat sink, a heat source, a working fluid to transport heat and pressure energy, a feed pump and a two-phase liquid-vapor expander for the working fluid mounted together with an electric generator on one rotating shaft, a first heat exchanger to transport heat from the working fluid to the heat sink, a second heat exchanger to transport heat from the heat source to the working fluid.Type: ApplicationFiled: January 16, 2014Publication date: July 3, 2014Applicant: Ebara International CorporationInventor: Joel V. Madison
-
Publication number: 20140182291Abstract: A power recovery system using the Rankine power cycle incorporating a two-phase liquid-vapor expander with an electric generator which further consists of a heat sink, a heat source, a working fluid to transport heat and pressure energy, a feed pump and a two-phase liquid-vapor expander for the working fluid mounted together with an electric generator on one rotating shaft, a first heat exchanger to transport heat from the working fluid to the heat sink, a second heat exchanger to transport heat from the heat source to the working fluid.Type: ApplicationFiled: January 16, 2014Publication date: July 3, 2014Applicant: Ebara International CorporationInventor: Joel V. Madison
-
Patent number: 8683824Abstract: A cryogenic turbine expander system which consists essentially of a cryogenic liquid pressure vessel, and the vessel further accommodating a turbine expander, an internal bypass configuration, which are operable in parallel, a three-way valve to direct incoming high pressure liquefied gas flow to the turbine expander, or the internal bypass configuration, which further consists a Joule-Thomson valve, when the turbine expander is not operational.Type: GrantFiled: April 26, 2010Date of Patent: April 1, 2014Assignee: Ebara International CorporationInventor: Joel V. Madison
-
Patent number: 8664785Abstract: A power recovery system using the Rankine power cycle incorporating a two-phase liquid-vapor expander with an electric generator which further consists of a heat sink, a heat source, a working fluid to transport heat and pressure energy, a feed pump and a two-phase liquid-vapor expander for the working fluid mounted together with an electric generator on one rotating shaft, a first heat exchanger to transport heat from the working fluid to the heat sink, a second heat exchanger to transport heat from the heat source to the working fluid.Type: GrantFiled: September 13, 2011Date of Patent: March 4, 2014Assignee: Ebara International CorporationInventor: Joel V. Madison
-
Patent number: 8653687Abstract: The present disclosure provides an improved multistage cryogenic liquefied gas expander for transforming the energy of a pressurized liquefied gas into electric energy, capable of operating at variable speeds, the improvement being a multistage cryogenic liquefied gas expander having at least two stages where only the first stage has a non-rotating nozzle ring having a plurality of adjustable position guide vanes.Type: GrantFiled: January 18, 2012Date of Patent: February 18, 2014Assignee: Ebara International CorporationInventor: Joel V. Madison
-
Publication number: 20140037424Abstract: An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.Type: ApplicationFiled: August 1, 2013Publication date: February 6, 2014Applicant: Ebara International CorporationInventor: Joel V. Madison
-
Publication number: 20140028026Abstract: An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.Type: ApplicationFiled: August 1, 2013Publication date: January 30, 2014Applicant: Ebara International CorporationInventor: Joel V. Madison
-
Publication number: 20140030061Abstract: An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.Type: ApplicationFiled: August 1, 2013Publication date: January 30, 2014Applicant: Ebara International CorporationInventor: Joel V. Madison
-
Publication number: 20130333415Abstract: A variable speed liquid LNG expander (X1) and a variable speed two-phase LNG expander (X2) in line, downstream from X1. The rotational speed of both expanders can be controlled and changed independent from each other. The speed of expander X1 and expander X2 is determined in such way that the amount of liquid LNG downstream from the PHS compared to the feed gas supply is maximized and the amount of vapor and boil-off downstream of X2 is minimized.Type: ApplicationFiled: May 30, 2013Publication date: December 19, 2013Applicant: Ebara International CorporationInventor: Hans E. Kimmel