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公开(公告)号：US20240352876A1
公开(公告)日：2024-10-24
申请号：US18685562
申请日：2022-08-23
发明人： Vanessa MARIOTTI
CPC分类号： F01K7/38 , F01D17/145 , F01K7/345 , F05D2220/31 , F05D2240/12 , F05D2260/60
摘要： A balanced grid valve for steam extraction from a multi-stage steam turbine comprising a first balancing chamber and a second balancing chamber which are configured to receive steam at high pressure through at least one duct. The balancing chambers are preferably in the form of annular grooves and are arranged at two different radial distances from the axis of the valve in order to reduce mechanical distortion of the valve.
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公开(公告)号：US12084988B2
公开(公告)日：2024-09-10
申请号：US17593226
申请日：2020-03-06
CPC分类号： F01D5/288 , C10G11/18 , C10G75/00 , F01D5/20 , F01D11/122 , F05D2220/62 , F05D2230/90 , F05D2240/307 , F05D2300/6111
摘要： A blade for fluid catalytic cracking (FCC) flue hot gas expander with a layer of hard abrasive material localized on the blade tip that contributes to reducing the accumulation of FCC catalyst residuals in the expander.
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3.发明公开公开(公告)号：US20240240793A1
公开(公告)日：2024-07-18
申请号：US18559497
申请日：2022-05-10
发明人： Egidio PUCCI , Stefano GORI , Roberto MELONI
摘要： A fuel injector comprises a fuel infeed chamber and a centerbody extending along a longitudinal axis from the fuel infeed chamber to a distal end of the centerbody. An outer sleeve surrounds the centerbody and forms an annular premix chamber between the outer sleeve and the centerbody. The centerbody comprises a distal tip projecting outside the annular premix chamber, beyond the distal end of the outer sleeve.
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公开(公告)号：US11976561B2
公开(公告)日：2024-05-07
申请号：US17310138
申请日：2020-01-24
CPC分类号： F01D11/18 , F01D11/001 , F01D9/041 , F01D11/005 , F01D11/025 , F01D11/08 , F01D25/246 , F01D25/26 , F05D2220/32 , F05D2230/642 , F05D2240/11 , F05D2240/30 , F05D2240/55
摘要： A gas (or steam) turbine is disclosed including: a rotor with at least one array of rotor blades, a stator with a casing and a shroud ring; the shroud ring extends around the array of blades rotor and the casing extends around the shroud ring. The shroud ring has radial size independent from temperature due to its material and is movably coupled with the casing so to allow the casing of the stator to thermally expand and contract during operation of the turbine while maintaining the shroud ring radial size. Also, the rotor thermally expands and contracts during operation of the turbine, and, at working temperature, tip regions of the rotor blades are in close proximity to an inner region of the shroud ring so that clearance is small or zero at working condition.
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公开(公告)号：US20230243302A1
公开(公告)日：2023-08-03
申请号：US18003631
申请日：2021-06-24
发明人： Luca PRETINI
CPC分类号： F02C6/00 , F02C9/00 , F05D2220/76
摘要： A method for monitoring and controlling a hybrid gas turbine system is disclosed, which is performed by a control logic unit. The method is implemented by executing an optimization among operating variables, so as to obtain control signals to control the operation of the hybrid gas turbine system. The hybrid gas turbine system is also disclosed, which includes at least one gas turbine, to be operated by fuel, and at least one electric motor/generator, capable of operating as a generator or as a motor. The hybrid gas turbine system comprises the control logic unit operatively connected to the fuel controller module and to the electric motor/generator controller.
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公开(公告)号：US11536273B2
公开(公告)日：2022-12-27
申请号：US17193292
申请日：2021-03-05
摘要： A double suction impeller is disclosed. In at least one embodiment, the impeller is configured for centrifugal pumps and hydraulic power recovery turbines. The impeller's flow-path arrangement comprises inter-blade channels, intersecting each other at the impeller's outer diameter and defining a variable cross section shape, so that the equivalent number of blades is at least doubled with respect to a conventional configuration obtained by the coupling of two single suction impellers and an improved control over the velocity of the flow within the inter-blade channels is achieved.
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公开(公告)号：US20220196606A1
公开(公告)日：2022-06-23
申请号：US17594515
申请日：2020-04-20
发明人： Gianni MOCHI , Paolo TRALLORI , Massimiliano TEMPESTINI , Giuseppe STRINGANO , Alessandro BETTI
摘要： A sensor arrangement used for measuring fouling and/or erosion in a machine. A first piezoelectric transducer, a first plate and eventually a first support member form a first vibrating mass. After electrically stimulating the first piezoelectric transducer, the first vibrating mass starts vibrating mechanically and consequently the first piezoelectric transducer generates an electric resonance vibration; the electric resonance vibration is at a resonance frequency depending on the mass of the first vibrating mass. If the mass of the first vibrating mass changes due to fouling and/or erosion by a flow of working fluid in the machine, also the electric resonance vibration frequency changes; such vibration frequency change may be measured and the corresponding mass change may be determined by comparison with a vibration frequency of a second vibrating mass not exposed to the flow of working fluid in the machine.
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公开(公告)号：US20220178379A1
公开(公告)日：2022-06-09
申请号：US17594204
申请日：2020-04-07
摘要： A compression system comprises a compressor, an inlet duct, a throttling valve installed in the inlet duct, an outlet duct, an anti-surge valve fluidly coupling the outlet duct with a portion of the inlet duct downstream of the throttling valve and a recycle valve fluidly coupling the outlet duct with a portion of the inlet duct upstream of the throttling valve. Keeping the recycle valve open, the anti-surge valve closed and the throttling valve partially closed allows lowering the pressure of the flow entering the compressor during its start-up.
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公开(公告)号：US20220099089A1
公开(公告)日：2022-03-31
申请号：US17310024
申请日：2020-01-14
摘要： The pump comprises a casing; a statoric part stationarily housed in the casing; at least one impeller arranged for rotation in the casing. A process fluid path extends though the statoric part and the impeller-M. A bearing rotatingly supports the impeller in the casing and a bearing lubrication path is provided, to circulate a fluid flow through the bearing. A rotary screw integral with the impeller and rotating therewith when the pump is operating provides a pumping action on process fluid such that rotation of the impeller promotes process fluid circulation by means of said rotary screw through the bearing lubrication path.
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公开(公告)号：US20220065123A1
公开(公告)日：2022-03-03
申请号：US17309966
申请日：2020-01-08
摘要： A device configured to seal a circumferential gap between a first turbomachine component and a second turbomachine component mutually rotatable about a longitudinal axis. The device is provided with a first sealing element connected to the first turbomachine component and with a second scaling element having an inner part provided with a plurality of projections extending towards the second machine component to define the teeth of a labyrinth seal between the high pressure region and the low pressure region of the turbo machine. The outer part of the second sealing element is connected to the first sealing element through an clastic element. One or more pressure chambers located between the first sealing element and the second sealing element are in fluid communication with the processing fluid of the turbomachine to derive a force acting on the outer part of the second scaling element in the direction of gap closure.
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