Patents by Inventor Mehmet Demiroglu
Mehmet Demiroglu 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: 9255486Abstract: A brush seal for use between a rotating component and a stationary component in a turbomachine is disclosed. The brush seal according to embodiments of this invention includes a set of bristles having a fixed end and a free end, wherein the fixed end is attached to the rotating component with a mechanical clamping element and the free end extends towards the stationary component, and wherein the set of bristles are angled axially at an axial angle with respect to the rotating component. In one embodiment, the fixed end of the set of bristles are wrapped at least partially around a core element and the clamping element partially surrounds the core element and the fixed end of the set of bristles, wherein the clamping element secures the fixed end of the set of bristles within a circumferential groove in the rotating component.Type: GrantFiled: July 20, 2012Date of Patent: February 9, 2016Assignee: GENERAL ELECTRIC COMPANYInventors: Guoqiang Lu, Mehmet Demiroglu, Binayak Roy, Deepak Trivedi, Xiaoqing Zheng
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Patent number: 8901463Abstract: A thermal management device is presently disclosed. The thermal management device includes an insulator with a maximum use temperature of at least 200 degrees Celsius, and a heating element having at least one heater leg, where the heater leg contacts the insulator and is configured to supply thermal energy. The heating element also has lead wires configured to provide a parallel electrical connection between the heater leg and a current source.Type: GrantFiled: September 16, 2011Date of Patent: December 2, 2014Assignee: General Electric CompanyInventors: Kristopher John Frutschy, Mehmet Demiroglu, Roger Bull, Paul Sudworth, Mathew Maury
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Patent number: 8858166Abstract: Systems and devices for substantially fluidly isolating portions of a rotary machine are disclosed. In one embodiment, a seal assembly for a rotary machine includes: a complementary set of seal segments configured relative one another so as to form a substantially continuous body with butt gaps between the seal segments, the segments including: a head flange; and an axial neck connected to the head flange, wherein the axial neck extends radially inboard and includes an axial slot formed substantially there through; and at least one butt gap seal element, wherein the at least one butt gap seal element includes an axial flange and a radial flange, the axial flange disposed within the axial slots of adjacent seal segments; and the radial flange extending radially inboard from the axial slots to a proximity of the rotary machine substantially forming a barrier to axial flow through the butt gap.Type: GrantFiled: September 7, 2011Date of Patent: October 14, 2014Assignee: General Electric CompanyInventors: Xiaoqing Zheng, Bernard Arthur Couture, Jr., Mehmet Demiroglu, Gregory Leonard Diantonio, Daniel Edward Jordy
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Publication number: 20140225326Abstract: The present application provides for a brush seal system for use about a rotor of a rotary machine. The brush seal system may include a number of brush seal segments, with each of the brush seal segments having a number of bristles, and one or more of the brush seal segments including an elliptical profile so as to vary a clearance between the brush seal segments and the rotor.Type: ApplicationFiled: April 15, 2014Publication date: August 14, 2014Applicant: General Electric CompanyInventors: Xiaoqing Zheng, Mehmet Demiroglu, Michael Dennis Mack, Guoqiang Lu
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Patent number: 8789833Abstract: According to one aspect of the invention, a turbine assembly includes a first stationary component, a second stationary component positioned radially outside the first stationary component, a first key feature on the first stationary component configured to mate to a second key feature on the second stationary component and a seal assembly positioned between the first and second key features to reduce fluid flow between the first and second key features. The seal assembly includes a V-shape member and a second member adjacent to the V-shape member, the second member and V-shape member having different rates of thermal expansion. The seal assembly also includes a latch feature coupled to the V-shape member configured to expand the seal assembly from a compressed state to an expanded sealing state when the seal assembly is subject to an elevated temperature.Type: GrantFiled: March 28, 2012Date of Patent: July 29, 2014Assignee: General Electric CompanyInventors: Xiaoqing Zheng, Mehmet Demiroglu, Guoqiang Lu, Michael Dennis Mack, Binayak Roy
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Publication number: 20130256990Abstract: According to one aspect of the invention, a turbine assembly includes a first stationary component, a second stationary component positioned radially outside the first stationary component, a first key feature on the first stationary component configured to mate to a second key feature on the second stationary component and a seal assembly positioned between the first and second key features to reduce fluid flow between the first and second key features. The seal assembly includes a V-shape member and a second member adjacent to the V-shape member, the second member and V-shape member having different rates of thermal expansion. The seal assembly also includes a latch feature coupled to the V-shape member configured to expand the seal assembly from a compressed state to an expanded sealing state when the seal assembly is subject to an elevated temperature.Type: ApplicationFiled: March 28, 2012Publication date: October 3, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Xiaoqing Zheng, Mehmet Demiroglu, Guoqiang Lu, Michael Dennis Mack, Binayak Roy
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Publication number: 20130256992Abstract: The present application provides for a brush seal system for use about a rotor of a rotary machine. The brush seal system may include a number of brush seal segments, with each of the brush seal segments having a number of bristles, and one or more of the brush seal segments including an elliptical profile so as to vary a clearance between the brush seal segments and the rotor.Type: ApplicationFiled: March 27, 2012Publication date: October 3, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Xiaoqing Zheng, Mehmet Demiroglu, Michael Dennis Mack, Guoqiang Lu
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Publication number: 20130068755Abstract: A thermal management device is presently disclosed. The thermal management device includes an insulator with a maximum use temperature of at least 200 degrees Celsius, and a heating element having at least one heater leg, where the heater leg contacts the insulator and is configured to supply thermal energy. The heating element also has lead wires configured to provide a parallel electrical connection between the heater leg and a current source.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Kristopher John FRUTSCHY, Mehmet Demiroglu, Roger Bull, Paul Sudworth, Mathew Maury
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Publication number: 20130071716Abstract: A thermal management device is presently disclosed. The device includes a plurality of insulator panels with a maximum use temperature of at least 500 degrees Celsius, and a heating element having at least two heater legs electrically connected in parallel, each heater leg contacting at least one of the insulator panels, and lead wires configured to provide a parallel electrical connection between the heater legs and a current source. Also disclosed is a thermal management device having an insulator and a heating element, where each of the electrically parallel heater legs is configured to provide substantially uniform heat flux over at least one surface of the device. Also disclosed is an energy storage device that includes a plurality of energy storage cells, and a thermal management device configured to supply thermal energy to the cells.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Kristopher John FRUTSCHY, Mehmet DEMIROGLU, Roger BULL, Paul SUDWORTH, Mathew MAURY
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Patent number: 8398090Abstract: A spring loaded seal assembly is disclosed for sealing a gap between adjacent turbine components. The seal assembly may generally include a turbine seal and a spring member. The turbine seal may extend between the adjacent turbine components and may be configured to seal the gap defined between the turbine components. The spring member may be configured to engage the turbine seal so as to maintain the seal in sealing engagement with the adjacent turbine components.Type: GrantFiled: June 9, 2010Date of Patent: March 19, 2013Assignee: General Electric CompanyInventors: Kevin Weston McMahan, Mehmet Demiroglu, Timur Rustamovich Repikov
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Publication number: 20130058765Abstract: Systems and devices for substantially fluidly isolating portions of a rotary machine are disclosed. In one embodiment, a seal assembly for a rotary machine includes: a complementary set of seal segments configured relative one another so as to form a substantially continuous body with butt gaps between the seal segments, the segments including: a head flange; and an axial neck connected to the head flange, wherein the axial neck extends radially inboard and includes an axial slot formed substantially there through; and at least one butt gap seal element, wherein the at least one butt gap seal element includes an axial flange and a radial flange, the axial flange disposed within the axial slots of adjacent seal segments; and the radial flange extending radially inboard from the axial slots to a proximity of the rotary machine substantially forming a barrier to axial flow through the butt gap.Type: ApplicationFiled: September 7, 2011Publication date: March 7, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Xiaoqing Zheng, Bernard Arthur Couture, JR., Mehmet Demiroglu, Gregory Leonard Diantonio, Daniel Edward Jordy
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Publication number: 20120288361Abstract: A brush seal for use between a rotating component and a stationary component in a turbomachine is disclosed. The brush seal according to embodiments of this invention includes a set of bristles having a fixed end and a free end, wherein the fixed end is attached to the rotating component with a mechanical clamping element and the free end extends towards the stationary component, and wherein the set of bristles are angled axially at an axial angle with respect to the rotating component. In one embodiment, the fixed end of the set of bristles are wrapped at least partially around a core element and the clamping element partially surrounds the core element and the fixed end of the set of bristles, wherein the clamping element secures the fixed end of the set of bristles within a circumferential groove in the rotating component.Type: ApplicationFiled: July 20, 2012Publication date: November 15, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Guoqiang Lu, Mehmet Demiroglu, Binayak Roy, Deepak Trivedi, Xiaoqing Zheng
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Patent number: 8225614Abstract: According to one aspect of the invention, a shim for sealing two adjacent turbine transition pieces is disclosed. The shim includes a circumferential member that includes a first lateral flange and a second lateral flange. Further, the first and second lateral flanges each comprise a tab configured to mate to a first surface plane and the first and second lateral flanges are configured to mate to a second surface plane, wherein the first and second surface planes are substantially parallel. In addition, the shim includes a first flange extending substantially perpendicular from the circumferential member.Type: GrantFiled: October 7, 2010Date of Patent: July 24, 2012Assignee: General Electric CompanyInventors: Benjamin Paul Lacy, Mehmet Demiroglu, Neelesh Nandkumar Sarawate
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Publication number: 20120183393Abstract: According to one aspect of the invention, an assembly to be placed between adjacent turbomachinery components is provided, where the assembly includes a first shim comprising a U-shaped cross-section geometry, wherein the first shim is configured to form a seal between adjacent components. The assembly also includes an insert placed within a recess of the U-shaped cross-section geometry of the first shim and a plurality of staggered couplings between the insert and the first shim.Type: ApplicationFiled: January 14, 2011Publication date: July 19, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Mehmet Demiroglu, Benjamin Paul Lacy, Neelesh Nandkumar Sarawate
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Patent number: 8196280Abstract: A fixture assembly and inspection method by which the internal diameter and/or concentricity of a segmented annular seal can be readily inspected and optionally measured prior to final installation. The fixture assembly has at least two fixture segments supported on a base, by which an annular fixture housing is defined having an outer rim and a groove with a cross-sectional shape corresponding to a cross-sectional shape of the annular seal. The fixture assembly further includes a device or apparatus for assessing at least one dimensional characteristic of the annular seal when installed in the groove of the fixture housing and as the assessing device/apparatus travels along the interior circumference of the fixture housing.Type: GrantFiled: June 2, 2010Date of Patent: June 12, 2012Assignee: General Electric CompanyInventors: Anthony Constantine Thermos, Ronald Ralph Cairo, Mehmet Demiroglu, Nitin Bhate
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Publication number: 20120119447Abstract: The present application provides a seating assembly for use with a transition piece and a stage one nozzle of a gas turbine engine. The seating assembly may include a support member positioned between the transition piece and the stage one nozzle and a primary spring element positioned on the support member and in contact with the stage one nozzle. The primary spring element may include a single bend therein.Type: ApplicationFiled: November 11, 2010Publication date: May 17, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Mehmet Demiroglu, Kevin McMahan, Benjamin Lacy, Neelesh Nandkumar Sarawate, Edip Sevincer
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Publication number: 20120119449Abstract: The present application provides a sealing assembly for use with a transition piece and a stage one nozzle of a gas turbine engine. The sealing assembly may include a seal element, an overlay piece positioned on the seal element, and a side seal positioned on the overlay piece.Type: ApplicationFiled: November 11, 2010Publication date: May 17, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Mehmet Demiroglu, Neelesh Nandkumar Sarawate, Edip Sevincer, Benjamin Lacy
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Publication number: 20120085103Abstract: According to one aspect of the invention, a shim for sealing two adjacent turbine transition pieces is disclosed. The shim includes a circumferential member that includes a first lateral flange and a second lateral flange. Further, the first and second lateral flanges each comprise a tab configured to mate to a first surface plane and the first and second lateral flanges are configured to mate to a second surface plane, wherein the first and second surface planes are substantially parallel. In addition, the shim includes a first flange extending substantially perpendicular from the circumferential member.Type: ApplicationFiled: October 7, 2010Publication date: April 12, 2012Applicant: General Electric CompanyInventors: Benjamin Paul Lacy, Mehmet Demiroglu, Neelesh Nandkumar Sarawate
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Publication number: 20110304104Abstract: A spring loaded seal assembly is disclosed for sealing a gap between adjacent turbine components. The seal assembly may generally include a turbine seal and a spring member. The turbine seal may extend between the adjacent turbine components and may be configured to seal the gap defined between the turbine components. The spring member may be configured to engage the turbine seal so as to maintain the seal in sealing engagement with the adjacent turbine components.Type: ApplicationFiled: June 9, 2010Publication date: December 15, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Kevin Weston McMahan, Timur Rustamovich Repikov, Mehmet Demiroglu
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Publication number: 20100236066Abstract: A fixture assembly and inspection method by which the internal diameter and/or concentricity of a segmented annular seal can be readily inspected and optionally measured prior to final installation. The fixture assembly has at least two fixture segments supported on a base, by which an annular fixture housing is defined having an outer rim and a groove with a cross-sectional shape corresponding to a cross-sectional shape of the annular seal. The fixture assembly further includes a device or apparatus for assessing at least one dimensional characteristic of the annular seal when installed in the groove of the fixture housing and as the assessing device/apparatus travels along the interior circumference of the fixture housing.Type: ApplicationFiled: June 2, 2010Publication date: September 23, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Anthony Constantine Thermos, Ronald Ralph Cairo, Mehmet Demiroglu, Nitin Bhate