Patents by Inventor Santhosh Donkada
Santhosh Donkada 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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Publication number: 20160273377Abstract: A cooling arrangement for a gas turbine engine includes a discharge channel for airflow from a compressor, a first cooling channel, and at least one aperture providing communication between the flow of air through the discharge channel and the first cooling channel. A restrictor device in the aperture regulates the flow of air between the discharge channel and the first cooling channel. The restrictor device deforms to vary air flowing through the aperture in response to a physical condition of the engine. This physical condition of the engine may be that of the temperature of air flowing through the discharge channel or the power output of the gas turbine engine. The restrictor device may be a boreplug, which may be a two-way shape memory alloy.Type: ApplicationFiled: March 18, 2016Publication date: September 22, 2016Inventors: Sheo Narain GIRI, Sanjeev Kumar JHA, Bhaskar PEMMI, Harish BOMMANAKATTE, Santhosh DONKADA, Krishna Kishore GUMPINA, Indrajit MAZUMDER, Rajarshi SAHA
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Patent number: 9297310Abstract: A cooling arrangement for a gas turbine engine. The cooling arrangement comprises a discharge channel for air flow from a compressor, a first cooling channel and at least one aperture providing communication between the flow of air through the discharge channel and the first cooling channel. A restrictor device in the aperture regulates the flow of air between the discharge channel and the first cooling channel. The restrictor device deforms to vary air flowing through the aperture in response to a physical condition of the engine. This physical condition of the engine may be that of the temperature of air flowing through the discharge channel, the restrictor device responding to regulate the flow of air based on that temperature. The restrictor device may be a two-way shape memory alloy.Type: GrantFiled: October 18, 2012Date of Patent: March 29, 2016Assignee: General Electric CompanyInventors: Sheo Narain Giri, Sanjeev Kumar Jha, Bhaskar Pemmi, Harish Bommanakatte, Santhosh Donkada, Krishna Kishore Gumpina, Indrajit Mazumder, Rajarshi Saha
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Patent number: 9261022Abstract: A system for controlling a flow rate of a compressed cooling medium between a compressor section and a turbine section of a gas turbine includes a flow path that is defined between the compressor section and the turbine section of the gas turbine and a thermally actuated variable flow valve disposed within the flow path. The variable flow valve defines an opening that changes in size based on a temperature of the compressed cooling medium flowing therethrough.Type: GrantFiled: December 7, 2012Date of Patent: February 16, 2016Assignee: GENERAL ELECTRIC COMPANYInventors: Rajarshi Saha, Santhosh Donkada, Indrajit Mazumder, Bhaskar Pemmi
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Patent number: 9200533Abstract: Various embodiments include apparatuses and related methods for determining the enthalpy of steam. In some embodiments, an apparatus includes: an extraction conduit fluidly connected with a steam turbine section, the extraction conduit for obtaining wet steam from the steam turbine section; a mixing chamber fluidly connected with the extraction conduit; an injector fluidly connected with the mixing chamber, the injector for providing dry steam to the mixing chamber for mixing with the wet steam from the steam turbine section to produce a sample mixture; and an enthalpy detection system fluidly connected with the mixing chamber, the enthalpy detection system configured to determine an enthalpy of the sample mixture.Type: GrantFiled: November 19, 2012Date of Patent: December 1, 2015Assignee: General Electric CompanyInventors: Santhosh Donkada, Indrajit Mazumder, Bhaskar Pemmi, Rajarshi Saha, Anil Kumar Sharma
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Patent number: 8899909Abstract: The present application provides a steam turbine system. The steam turbine system may include a high pressure section, an intermediate pressure section, a shaft packing location positioned between the high pressure section and the intermediate pressure section, a source of steam, and a cooling system. The cooling system delivers a cooling steam extraction from the source of steam to the shaft packing location so as to cool the high pressure section and the intermediate pressure section.Type: GrantFiled: June 27, 2011Date of Patent: December 2, 2014Assignee: General Electric CompanyInventors: Vishwas Kumar Pandey, Debabrata Mukhopadhyay, Manikandan Srinivasan, Santhosh Donkada
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Patent number: 8888436Abstract: The present application provides a section cooling system for a steam turbine to limit a leakage flow therethrough. The section cooling system may include a first pressure flow extraction from a first section to a shaft packing location between the first section and a second section and a rotor aperture extending towards the first section. The first pressure flow extraction diverts the leakage flow from the first section into the rotor aperture so as to limit the leakage flow to the second section.Type: GrantFiled: June 23, 2011Date of Patent: November 18, 2014Assignee: General Electric CompanyInventors: Santhosh Donkada, Howard Brilliant, Vishwas Kumar Pandey, Debabrata Mukhopadhyay
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Patent number: 8888437Abstract: A dual flow steam turbine includes coolant passageways which extract coolant steam from the main steam flow paths at locations downstream from the inlet. The coolant passageways conduct the coolant steam through portions of the dual flow steam turbine which are subjected to a high temperature flow. In some cases, the passageways conduct the coolant steam through first stage nozzle boxes and an inlet assembly of the dual flow steam turbine. In some cases, the inlet assembly of the steam turbine includes an annular diaphragm, and a coolant passageway passes through the annular diaphragm to help cool the annular diaphragm.Type: GrantFiled: October 19, 2011Date of Patent: November 18, 2014Assignee: General Electric CompanyInventors: Vishwas Kumar Pandey, Rohit Pruthi, Santhosh Donkada
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Publication number: 20140157791Abstract: A system for controlling a flow rate of a compressed cooling medium between a compressor section and a turbine section of a gas turbine includes a flow path that is defined between the compressor section and the turbine section of the gas turbine and a thermally actuated variable flow valve disposed within the flow path. The variable flow valve defines an opening that changes in size based on a temperature of the compressed cooling medium flowing therethrough.Type: ApplicationFiled: December 7, 2012Publication date: June 12, 2014Applicant: General Electric CompanyInventors: Rajarshi Saha, Santhosh Donkada, Indrajit Mazumder, Bhasker Pemmi
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Publication number: 20140140806Abstract: Various embodiments include apparatuses and related methods for determining the enthalpy of steam. In some embodiments, an apparatus includes: an extraction conduit fluidly connected with a steam turbine section, the extraction conduit for obtaining wet steam from the steam turbine section; a mixing chamber fluidly connected with the extraction conduit; an injector fluidly connected with the mixing chamber, the injector for providing dry steam to the mixing chamber for mixing with the wet steam from the steam turbine section to produce a sample mixture; and an enthalpy detection system fluidly connected with the mixing chamber, the enthalpy detection system configured to determine an enthalpy of the sample mixture.Type: ApplicationFiled: November 19, 2012Publication date: May 22, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Santhosh Donkada, Indrajit Mazumder, Bhaskar Pemmi, Rajarshi Saha, Anil Kumar Sharma
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Publication number: 20140109580Abstract: A cooling arrangement for a gas turbine engine. The cooling arrangement comprises a discharge channel for air flow from a compressor, a first cooling channel and at least one aperture providing communication between the flow of air through the discharge channel and the first cooling channel. A restrictor device in the aperture regulates the flow of air between the discharge channel and the first cooling channel. The restrictor device deforms to vary air flowing through the aperture in response to a physical condition of the engine. This physical condition of the engine may be that of the temperature of air flowing through the discharge channel, the restrictor device responding to regulate the flow of air based on that temperature. The restrictor device may be a two-way shape memory alloy.Type: ApplicationFiled: October 18, 2012Publication date: April 24, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Sheo Narain GIRI, Sanjeev Kumar JHA, Bhaskar PEMMI, Harish BOOMANAKATTE, Santhosh DONKADA, Krishna Kishore GUMPINA, Indrajit MAZUMDER, Rajarshi SAHA
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Publication number: 20130156540Abstract: A steam turbine system for use in a power plant includes a steam seal header that collects steam from seals of a high pressure steam turbine and an intermediate pressure steam turbine. The collected steam is provided to seals of a low pressure steam turbine to ensure the seals provide an effective seal for the low pressure steam turbine. Steam from the low pressure steam turbine is also collected in the steam seal header and it is mixed with the steam collected from the high and intermediate pressure seals. The mixed steam is then provided to drive the low pressure steam turbine.Type: ApplicationFiled: December 14, 2011Publication date: June 20, 2013Inventors: Santhosh DONKADA, Bhaskar M, Rajendra Gonoor, Abhishek Agrawal, Girajala Srinivas
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Publication number: 20130101386Abstract: A dual flow steam turbine includes coolant passageways which extract coolant steam from the main steam flow paths at locations downstream from the inlet. The coolant passageways conduct the coolant steam through portions of the dual flow steam turbine which are subjected to a high temperature flow. In some cases, the passageways conduct the coolant steam through first stage nozzle boxes and an inlet assembly of the dual flow steam turbine. In some cases, the inlet assembly of the steam turbine includes an annular diaphragm, and a coolant passageway passes through the annular diaphragm to help cool the annular diaphragm.Type: ApplicationFiled: October 19, 2011Publication date: April 25, 2013Inventors: Vishwas Kumar PANDEY, Rohit PRUTHI, Santhosh DONKADA
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Publication number: 20120328409Abstract: The present application provides a section cooling system for a steam turbine to limit a leakage flow therethrough. The section cooling system may include a first pressure flow extraction from a first section to a shaft packing location between the first section and a second section and a rotor aperture extending towards the first section. The first pressure flow extraction diverts the leakage flow from the first section into the rotor aperture so as to limit the leakage flow to the second section.Type: ApplicationFiled: June 23, 2011Publication date: December 27, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Santhosh Donkada, Howard Brilliant, Vishwas Kumar Pandey, Debabrata Mukhopadhyay
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Publication number: 20120324862Abstract: The present application provides a steam turbine system. The steam turbine system may include a high pressure section, an intermediate pressure section, a shaft packing location positioned between the high pressure section and the intermediate pressure section, a source of steam, and a cooling system. The cooling system delivers a cooling steam extraction from the source of steam to the shaft packing location so as to cool the high pressure section and the intermediate pressure section.Type: ApplicationFiled: June 27, 2011Publication date: December 27, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Vishwas Kumar Pandey, Debabrata Mukhopadhyah, Manikandan Srinivasan, Santhosh Donkada