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61.发明授权公开(公告)号：US10760582B2
公开(公告)日：2020-09-01
申请号：US15535100
申请日：2015-11-26
申请人： Nuovo Pignone Srl
摘要： A stabilizing arrangement for a rotating shaft including a shaft being arranged substantially vertically in a machine so as to rotate during machine operation, first pressure delivery system for delivering a fluid pressure, in particular of a fluid circulating inside the machine, at a first location of the machine. First location is close to the shaft and part of first pressure delivery system is arranged at first location so as to exert a lateral pulling or pushing action on the shaft.
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公开(公告)号：US10758992B2
公开(公告)日：2020-09-01
申请号：US15529708
申请日：2015-11-25
申请人： Nuovo Pignone Srl
发明人： Francescosaverio Chiari , Cesare Stefanini , Mario Milazzo , Marco Magnasco , Francesco Inglese
摘要： A handling apparatus for performing a TIG weld comprises a main body for holding a filler rod; a feeding device attached to the main body and configured to advance the filler rod during welding; a control unit configured to act on the feeding device and to regulate the speed of the filler rod.
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公开(公告)号：US10669885B2
公开(公告)日：2020-06-02
申请号：US15102079
申请日：2014-12-04
申请人： Nuovo Pignone SRL
摘要： Washing of the gas turbine engine, during operation of the gas turbine engine, comprises a washing phase that consists in spraying a detergent liquid substance towards the inlet of the compressor of the engine; the mass flow of the detergent liquid substance to be sprayed is set so that the liquid-to-gas ratio at the inlet of the compressor is more than 1% and less than 5% with reference to the rated mass flow of the compressor; the washing phase comprises a first sub-phase during which the flow of the detergent liquid substance is increased gradually and a second sub-phase during which the flow of the detergent liquid substance is maintained constant.
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公开(公告)号：US10570923B2
公开(公告)日：2020-02-25
申请号：US15302697
申请日：2015-04-02
申请人： Nuovo Pignone Srl
摘要： A scroll for use in conjunction with a fluid compressor is described. The scroll comprises a fluid inlet adapted to receive a fluid flow and a fluid outlet adapted to discharge the fluid flow. The scroll further comprises a scroll-shaped wall defining an inner flow volume. At least one blade is provided in the inner flow volume of the scroll. The blade is configured and arranged for correcting a direction of the flow of fluid in the flow volume when the scroll is operating in off-design conditions.
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公开(公告)号：US10533503B2
公开(公告)日：2020-01-14
申请号：US15126629
申请日：2015-03-18
申请人： Nuovo Pignone Srl
摘要： A method of starting a gas turbine is provided, comprising the step of providing an apparatus for regulating the flow of fuel in a gas turbine, the apparatus comprising a main line connecting a fuel source to a nozzle array; and an auxiliary line connecting the fuel source to the nozzle array. The method further comprises the steps of keeping the main line sealed while increasing the auxiliary line fuel flow rate; firing the gas turbine while keeping the main line sealed; and after the combustion has started in the gas turbine, opening the main line for increasing the main line fuel flow rate; wherein the auxiliary line maximum flow rate is less than the main line maximum flow rate.
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公开(公告)号：US10337554B2
公开(公告)日：2019-07-02
申请号：US15327441
申请日：2015-07-01
申请人： Nuovo Pignone Srl
IPC分类号： F16C5/00
摘要： A crosshead for a piston rod is provided, which comprises a main body having a first and a second seat. The first seat is configured to hold a connecting rod, and the second seat is configured to hold a piston rod. The main body is made as a single piece.
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公开(公告)号：US10323656B2
公开(公告)日：2019-06-18
申请号：US15313197
申请日：2015-05-22
申请人： Nuovo Pignone Srl
发明人： Matteo Bertoneri , Giuseppe Vannini
IPC分类号： F04D29/70 , F04D29/58 , F04D29/08 , F04D29/058 , F04D29/44 , F04D17/12 , F04D25/06 , F04D29/28 , F04D29/42 , F04D27/02
摘要： A wet-gas centrifugal compressor is disclosed. The compressor comprises a compressor casing and at least one impeller arranged in the compressor casing for rotation around a rotation axis. A stationary diffuser is arranged in the compressor casing and extends around the impeller. The diffuser has a curved end portion with a radially inner curved wall and a radially outer curved wall. A plurality of dry-gas extraction holes is provided, ending at a plurality of respective inlet ports arranged around the rotation axis and on the inner curved wall of the curved end portion of the diffuser. Each dry-gas extraction hole extends from the respective inlet port towards the rotation axis and is inclined over a radial direction, such that each dry-gas extraction hole is oriented in a counter-flow direction with respect to a direction of the gas flow in the curved end portion of the diffuser.
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公开(公告)号：US10267308B2
公开(公告)日：2019-04-23
申请号：US15032874
申请日：2014-10-27
申请人： Nuovo Pignone Srl
摘要： A crosshead-piston rod assembly for a reciprocating compressor comprises a piston rod; a crosshead having a bore; a connection element attached to the piston rod and at least partially inserted into the bore for connecting the crosshead to a piston.
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公开(公告)号：US10221691B2
公开(公告)日：2019-03-05
申请号：US14896465
申请日：2014-06-05
申请人： Nuovo Pignone Srl
摘要： A connection arrangement comprising a shaft having an axial through hole, a tie rod located inside the axial through hole, an impeller comprising a solid hub, a plurality of blades, and an integral stub protruding axially from the solid hub; at an end of the tie rod there is an integral body having a shape radially protruding from the tie rod; the stub has a cavity for receiving the body and an axial hole for inserting the body into the cavity; the stub axial hole has a shape corresponding to the shape of the body; the cavity is so sized and shaped as to allow rotation of the body inside the cavity and trapping of the body in the cavity once rotated; the shaft and the impeller are coupled together by a coupling.
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公开(公告)号：US10174630B2
公开(公告)日：2019-01-08
申请号：US14441549
申请日：2013-11-07
申请人： Nuovo Pignone Srl
发明人： Marco Scarponi , Antonio Pelagotti , Paolo Bianchi , Lorenzo Naldi , Giuliano Milani , Claudio Antonini , Graziano Dell'Anna , Paolo Battagli , Mirko Libraschi , Annunzio Lazzari , Damiano Agostini
摘要： A drive system for driving at least one compressor is described. The system comprises a gas turbine configured and arranged for driving the compressor. The gas turbine has a hot end and a cold end. A load coupling for connection of said gas turbine to the compressor is arranged at hot end of the gas turbine. An electric motor/generator arranged at the cold end of the gas turbine. The electric motor/generator is electrically connected to an electric power grid and is adapted to function as a generator for converting excess mechanical power from the gas turbine into electrical power and delivering the electrical power to the electric power grid, and as a motor for supplementing driving power to the compressor.
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