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公开(公告)号：US11549401B2
公开(公告)日：2023-01-10
申请号：US17303804
申请日：2021-06-08
发明人： Robert J. Kraft
摘要： Operating coal fired energy systems. A method of operating a coal fired energy system comprises operating a coal fired steam generator comprising a coal feed system and a main air feed system to provide a coal-air mixture as a heating source for a boiler for generating steam. The method includes operating an auxiliary air compression system comprising a fueled engine coupled to a compressor for providing an auxiliary supply of compressed air to a soot blower of the coal-fired steam generator. The method comprises injecting the auxiliary supply of compressed air along walls of the boiler to remove soot and ash buildup from the boiler.
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公开(公告)号：US11073084B2
公开(公告)日：2021-07-27
申请号：US16601235
申请日：2019-10-14
发明人： Robert J. Kraft , Peter Perri
摘要： The present invention discloses a novel apparatus and methods for providing a flow of cooling air to one or more turbine nozzles or turbine blade outer air seals. The flow of cooling air is provided by an external source and regulated in order to improve turbine nozzle and air seal cooling efficiency and component life.
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公开(公告)号：US12123348B2
公开(公告)日：2024-10-22
申请号：US18051853
申请日：2022-11-01
发明人： Robert J. Kraft , Joshua J. Kraft
CPC分类号： F02C6/16 , F01D15/10 , F05D2230/80 , F05D2240/40 , F05D2240/52 , F05D2260/42 , Y02E60/16
摘要： In an embodiment, a method of modifying an existing gas turbine to create a storage engine is provided. The gas turbine has a combustor, a compressor section, and a turbine section. The method comprises the step of modifying the compressor section of the gas turbine to form the storage engine. Air supplied to the combustor of the storage engine is heated by exhaust of the storage engine and is supplied from a remote source of air. Modifying the compressor section includes removing at least some of a plurality of rotatable airfoils of a compressor of the compressor section and introducing an increased capacity thrust bearing on a shaft line.
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公开(公告)号：US20230063511A1
公开(公告)日：2023-03-02
申请号：US18053792
申请日：2022-11-09
发明人： Robert J. Kraft
摘要： A system comprises a gas turbine engine. The gas turbine engine has a flow diffuser system, a combustor, a modified compressor section, and a turbine coupled to a shaft. The system includes a low pressure intercooled compressor, a high pressure intercooled compressor, a recuperator, and a compressed air storage tank. The compressed air storage tank is in selective fluid communication with the low pressure intercooled compressor via the high pressure intercooled compressor, and the recuperator. The high pressure intercooled compressor is configured to selectively receive compressed air from the low pressure intercooled compressor and is further configured to selectively compress the compressed air to a highly compressed air for storage in the compressed air storage tank. Each of the compressed air storage tank and the low pressure intercooled compressor is selectively and fluidly coupled to the gas turbine engine.
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公开(公告)号：US20210293155A1
公开(公告)日：2021-09-23
申请号：US17303804
申请日：2021-06-08
发明人： Robert J. Kraft
摘要： Operating coal fired energy systems. A method of operating a coal fired energy system comprises operating a coal fired steam generator comprising a coal feed system and a main air feed system to provide a coal-air mixture as a heating source for a boiler for generating steam. The method includes operating an auxiliary air compression system comprising a fueled engine coupled to a compressor for providing an auxiliary supply of compressed air to a soot blower of the coal-fired steam generator. The method comprises injecting the auxiliary supply of compressed air along walls of the boiler to remove soot and ash buildup from the boiler.
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6.发明公开公开(公告)号：US20230160340A1
公开(公告)日：2023-05-25
申请号：US18051853
申请日：2022-11-01
发明人： Robert J. Kraft , Joshua J. Kraft
CPC分类号： F02C6/16 , F01D15/10 , F05D2260/42 , F05D2230/80 , F05D2240/40 , F05D2240/52 , Y02E60/16
摘要： In an embodiment, a method of modifying an existing gas turbine to create a storage engine is provided. The gas turbine has a combustor, a compressor section, and a turbine section. The method comprises the step of modifying the compressor section of the gas turbine to form the storage engine. Air supplied to the combustor of the storage engine is heated by exhaust of the storage engine and is supplied from a remote source of air. Modifying the compressor section includes removing at least some of a plurality of rotatable airfoils of a compressor of the compressor section and introducing an increased capacity thrust bearing on a shaft line.
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公开(公告)号：US11549435B1
公开(公告)日：2023-01-10
申请号：US17117110
申请日：2020-12-10
发明人： Robert J. Kraft
摘要： In an embodiment, a gas turbine system is provided. The gas turbine system may include a supplementary air system and a flow diffuser configured to receive compressed air from the supplementary air system. The gas turbine system further comprises a gas turbine compressor downstream the flow diffuser, a combustor downstream the gas turbine compressor, a turbine downstream the combustor, and a turbine haft. The turbine shaft comprises a thrust bearing and a clutch. When the gas turbine system is operating, the gas turbine compressor does not consume electricity.
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