Patents by Inventor Sachin Kumar Rai
Sachin Kumar Rai 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: 9470096Abstract: A turbine bucket having an airfoil is disclosed. The airfoil may include a pressure side and a suction side extending between a leading edge and a trailing edge. In addition, the airfoil may include a tip. The tip may include a tip floor and a tip wall extending outwardly from the tip floor. The tip wall may include an inner surface defining an inner perimeter of the tip wall. Moreover, a plurality of notches may be defined by the inner surface around at least a portion of the inner perimeter.Type: GrantFiled: July 26, 2012Date of Patent: October 18, 2016Assignee: General Electric CompanyInventors: Niraj Kumar Mishra, Xiuzhang James Zhang, Murugesan Seerangan, Sachin Kumar Rai
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Patent number: 9388710Abstract: An exhaust diffuser arrangement for a turbine system includes an inlet for receiving a flow proximate a last stage bucket of the turbine system, the flow flowing in a first flow direction. Also included is a flow redirecting component. The flow redirecting component includes a first wall having a first side of a concave surface geometry for redirecting the flow and a second side of a convex surface geometry. The flow redirecting component also includes a second wall spaced downstream of the first wall and having at least one flow exit for reducing a boundary layer along the second side of the first wall.Type: GrantFiled: October 1, 2012Date of Patent: July 12, 2016Assignee: General Electric CompanyInventors: Sachin Kumar Rai, Richa Awasthi, Shruti Kulkarni, Moorthi Subramaniyan
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Publication number: 20140161603Abstract: An exhaust diffuser is provided having a center body having an inlet adapted for coupling to a turbine. The center body has an outer wall, and a guide member disposed inside the center body. A flow path reducing member is disposed inside the center body. The flow path reducing member is configured to be movable into a first position and a second position. The first position is an inactive position having no impact on an exit flow area of the exhaust diffuser, and the second position is a deployed position that reduces the exit flow area of the exhaust diffuser.Type: ApplicationFiled: December 7, 2012Publication date: June 12, 2014Applicant: General Electric CompanyInventors: Rohit Chouhan, Moorthi Subramaniyan, Manjunath Bangalore Chengappa, Sachin Kumar Rai
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Publication number: 20140093352Abstract: An exhaust diffuser arrangement for a turbine system includes an inlet for receiving a flow proximate a last stage bucket of the turbine system, the flow flowing in a first flow direction. Also included is a flow redirecting component. The flow redirecting component includes a first wall having a first side of a concave surface geometry for redirecting the flow and a second side of a convex surface geometry. The flow redirecting component also includes a second wall spaced downstream of the first wall and having at least one flow exit for reducing a boundary layer along the second side of the first wall.Type: ApplicationFiled: October 1, 2012Publication date: April 3, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Sachin Kumar Rai, Richa Awasthi, Shruti Kulkarni, Moorthi Subramaniyan
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Publication number: 20140030102Abstract: A turbine bucket having an airfoil is disclosed. The airfoil may include a pressure side and a suction side extending between a leading edge and a trailing edge. In addition, the airfoil may include a tip. The tip may include a tip floor and a tip wall extending outwardly from the tip floor. The tip wall may include an inner surface defining an inner perimeter of the tip wall. Moreover, a plurality of notches may be defined by the inner surface around at least a portion of the inner perimeter.Type: ApplicationFiled: July 26, 2012Publication date: January 30, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Niraj Kumar Mishra, Xiuzhang James Zhang, Murugesan Seerangan, Sachin Kumar Rai
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Patent number: 8608424Abstract: A turbomachine includes a housing having an inner surface, a compressor, a turbine and a rotary member including a plurality of blade members configured as part of one of the compressor and the turbine. Each of the plurality of blade members includes a base portion and a tip portion. The turbomachine also includes a honeycomb seal member mounted to the inner surface of the housing adjacent the rotary member. The honeycomb seal member includes a contoured surface having formed therein a deformation zone. The deformation zone includes an inlet zone and an outlet zone. The inlet zone is spaced a first distance from the tip portion of each of the plurality of blade members and the outlet zone is spaced a second distance from the tip portion of each of the plurality of blade members. The second distance being substantially equal to or less than the first distance.Type: GrantFiled: October 9, 2009Date of Patent: December 17, 2013Assignee: General Electric CompanyInventors: Sanjeev Kumar Jain, Joshy John, Sachin Kumar Rai, Rajnikumar Nandalal Suthar
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Patent number: 8333557Abstract: An apparatus is provided and includes a first member with a flow diverting member extending from a surface thereof and a second member disposed proximate to the first member with a clearance gap area defined between a surface of the second member and a distal end of the flow diverting member such that a fluid path, along which fluid flows from an upstream section and through the clearance gap area, is formed between the surfaces of the first and second members. The second member is formed to define dual vortex chambers at the upstream section in which the fluid is directed to flow in vortex patterns prior to being permitted to flow through the clearance gap area.Type: GrantFiled: October 14, 2009Date of Patent: December 18, 2012Assignee: General Electric CompanyInventors: Joshy John, Sanjeev Kumar Jain, Sachin Kumar Rai
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Publication number: 20110085893Abstract: A turbomachine includes a housing having an inner surface, a compressor, a turbine and a rotary member including a plurality of blade members configured as part of one of the compressor and the turbine. Each of the plurality of blade members includes a base portion and a tip portion. The turbomachine also includes a honeycomb seal member mounted to the inner surface of the housing adjacent the rotary member. The honeycomb seal member includes a contoured surface having formed therein a deformation zone. The deformation zone includes an inlet zone and an outlet zone. The inlet zone is spaced a first distance from the tip portion of each of the plurality of blade members and the outlet zone is spaced a second distance from the tip portion of each of the plurality of blade members. The second distance being substantially equal to or less than the first distance.Type: ApplicationFiled: October 9, 2009Publication date: April 14, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Sanjeev Kumar Jain, Joshy John, Sachin Kumar Rai, Rajnikumar Nandalal Suthar
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Publication number: 20110085892Abstract: An apparatus is provided and includes a first member with a flow diverting member extending from a surface thereof and a second member disposed proximate to the first member with a clearance gap area defined between a surface of the second member and a distal end of the flow diverting member such that a fluid path, along which fluid flows from an upstream section and through the clearance gap area, is formed between the surfaces of the first and second members. The second member is formed to define dual vortex chambers at the upstream section in which the fluid is directed to flow in vortex patterns prior to being permitted to flow through the clearance gap area.Type: ApplicationFiled: October 14, 2009Publication date: April 14, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Joshy John, Sanjeev Kumar Jain, Sachin Kumar Rai