Patents by Inventor Angelo Grimaldi
Angelo Grimaldi 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: 20240011493Abstract: The compressor is used for processing a CO2 flow; a first compressor stage has a first row of blades with a first number of blades and a second compressor stage, downstream the first compressor stage, has a second row of blades with a second number of blades; the number of blades of the first compressor stage is less than the number of blades of the second compressor stage; there is an annular gap between the first row of blades and the second row of blades; the first compression stage (200) is designed so to assure that the CO2 flow is in supercritical condition, preferably close to CO2 critical point, at its outlet, and so that the second compressor stage process CO2 in supercritical condition.Type: ApplicationFiled: November 24, 2021Publication date: January 11, 2024Inventors: Ernani Fulvio BELLOBUONO, Lorenzo TONI, Angelo GRIMALDI, Emanuele RIZZO, Roberto VALENTE
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Publication number: 20230175526Abstract: The centrifugal compressor has a housing with two or more compressor inlets for process gas to be compressed; an impeller is located inside the housing so to receive an inlet flow of process gas from the two compressor inlets through a plenum chamber and increases gas pressure as process gas flows in the impeller thanks to the two or more inlets uniformity of flow at the inlets may be achieved through short collector pipes fluidly connected upstream of the inlets piping of a compressor system including such compressor is made easy as it is subject to fewer constraints.Type: ApplicationFiled: April 29, 2021Publication date: June 8, 2023Inventors: Marco QUERCIA, Giuseppe SASSANELLI, Simone CORBO, Angelo GRIMALDI
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Patent number: 11268753Abstract: A compressor system is disclosed, including a first compressor unit having: at least a first gas inlet at a first gas pressure level; a second gas inlet at a second gas pressure level; and a gas discharge; a second compressor unit having: at least a third gas inlet at a third gas pressure level; a fourth gas inlet at a fourth gas pressure level; and a gas delivery. The gas discharge of the first compressor unit is fluidly coupled to one of the third gas inlet and fourth gas inlet of the second compressor unit.Type: GrantFiled: July 26, 2017Date of Patent: March 8, 2022Assignee: Nuovo Pignone Technologie SrlInventors: Angelo Grimaldi, Antonio Pelagotti
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Patent number: 10809000Abstract: Compression train for a natural gas liquefaction process. The compression train includes a driver machine and only one centrifugal compressor machine driven in rotation by the driver machine; the compressor is configured to compress a refrigerant gas with a molecular weight less than 30 g/mol from a suction pressure to a discharge pressure; the ratio between discharge and suction pressures is higher than 10. A LNG plant including a compression train.Type: GrantFiled: January 5, 2018Date of Patent: October 20, 2020Assignee: NUOVO PIGNONE TECNOLOGIE SRLInventors: Giuseppe Iurisci, Angelo Grimaldi, Giuseppe Sassanelli, Marco Formichini, Antonio Cristallo, Davide Becherucci, Dario Matina
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Patent number: 10669864Abstract: An unshrouded turbomachine impeller is disclosed. The impeller comprises a hub and a plurality of sequentially arranged blades. Each blade extends from a blade root at the hub to a blade tip and is comprised of a first blade edge and a second blade edge. A flow vane is formed between each pair of neighboring blades. A connection member extends across each flow vane between neighboring blades and rigidly or monolithically connects a first modal displacement region of a first one of the pair of neighboring blades to a second modal displacement region of a second one of the pair of neighboring blades.Type: GrantFiled: July 18, 2016Date of Patent: June 2, 2020Assignee: NUOVO PIGNONE SRLInventors: Giuseppe Iurisci, Angelo Grimaldi, Simone Corbo
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Patent number: 10584611Abstract: A coupling guard for a rotating member comprising a shell surrounding the rotating member, a plenum disposed in the shell, at least an injection tube for injecting a cooling gas and an outlet for discharging the cooling gas, wherein the injection tube extends through the plenum from a first axial opening proximal to the shell to a second axial opening proximal to the rotating member, the injection tube having a leading edge which first contacts the gas circulating in the plenum and a trailing edge opposite to the leading edge, the second opening having a first portion orthogonal to the axis of the injection tube and a second portion across the trailing edge, adjacent to the first portion and parallel to the axis of the injection tube.Type: GrantFiled: October 24, 2014Date of Patent: March 10, 2020Assignee: NUOVO PIGNONE SRLInventors: Marco Pelella, Andrea Bernocchi, Angelo Grimaldi, Simone Tanteri
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Publication number: 20190271502Abstract: A compressor system is disclosed, including a first compressor unit having: at least a first gas inlet at a first gas pressure level; a second gas inlet at a second gas pressure level; and a gas discharge; a second compressor unit having: at least a third gas inlet at a third gas pressure level; a fourth gas inlet at a fourth gas pressure level; and a gas delivery. The gas discharge of the first compressor unit is fluidly coupled to one of the third gas inlet and fourth gas inlet of the second compressor unit.Type: ApplicationFiled: July 26, 2017Publication date: September 5, 2019Applicant: Nuovo Pignone Technologie SrlInventors: Angelo GRIMALDI, Antonio PELAGOTTI
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Publication number: 20190249921Abstract: According to one aspect of the present disclosure, a natural gas liquefaction system (100) is provided. The system comprises an integrally-geared turbo-compressor (150) with a plurality of compressor stages; a prime mover (160) for driving the compressor; a pre-cooling loop (110), through which a first refrigerant is adapted to circulate, wherein one or more first compressor stages (151) of the plurality of compressor stages are adapted to pressurize the first refrigerant; a cooling loop (130), through which a second refrigerant is adapted to circulate, wherein one or more second compressor stages (155) of the plurality of compressor stages are adapted to pressurize the second refrigerant; a first heat exchanger device (170) for transferring heat from a natural gas and/or from the second refrigerant to the first refrigerant; and a second heat exchanger device (180) for transferring heat from the natural gas to the second refrigerant.Type: ApplicationFiled: October 25, 2017Publication date: August 15, 2019Inventors: Elvira BONGERMINO, Angelo GRIMALDI, Giuseppe IURISCI, Antonio PELAGOTTI, Leonardo BALDASSARRE
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Publication number: 20190017393Abstract: An unshrouded turbomachine impeller is disclosed. The impeller comprises a hub and a plurality of sequentially arranged blades. Each blade extends from a blade root at the hub to a blade tip and is comprised of a first blade edge and a second blade edge. A flow vane is formed between each pair of neighboring blades. A connection member extends across each flow vane between neighboring blades and rigidly or monolithically connects a first modal displacement region of a first one of the pair of neighboring blades to a second modal displacement region of a second one of the pair of neighboring blades.Type: ApplicationFiled: July 18, 2016Publication date: January 17, 2019Inventors: Giuseppe IURISCI, Angelo GRIMALDI, Simone CORBO
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Publication number: 20180209728Abstract: Compression train for a natural gas liquefaction process. The compression train includes a driver machine and only one centrifugal compressor machine driven in rotation by the driver machine; the compressor is configured to compress a refrigerant gas with a molecular weight less than 30 g/mol from a suction pressure to a discharge pressure; the ratio between discharge and suction pressures is higher than 10. A LNG plant including a compression train.Type: ApplicationFiled: January 5, 2018Publication date: July 26, 2018Inventors: Giuseppe IURISCI, Angelo GRIMALDI, Giuseppe SASSANELLI, Marco FORMICHINI, Antonio CRISTALLO, Davide BECHERUCCI, Dario MATINA
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Patent number: 9568007Abstract: A multistage centrifugal turbomachine comprising a rotor assembly comprising a shaft carrying a first and a second impeller, and a stator comprising a passage for a fluid flowing from an outlet side of the first impeller to an inlet side of the second impeller, the passage comprising a diffuser downstream the outlet side of the first impeller), a return channel upstream the inlet side of the second impeller, a bend connecting the diffuser and the return channel, and a plurality of stator blades being provided in the return channel, wherein a portion of the return channel is delimited by the first impeller, the plurality of stator blades extending at least partially in the portion of the return channel.Type: GrantFiled: July 19, 2012Date of Patent: February 14, 2017Assignee: Nuovo Pignone SPAInventors: Giuseppe Iurisci, Angelo Grimaldi
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Publication number: 20160281508Abstract: A coupling guard for a rotating member comprising a shell surrounding the rotating member, a plenum disposed in the shell, at least an injection tube for injecting a cooling gas and an outlet for discharging the cooling gas, wherein the injection tube extends through the plenum from a first axial opening proximal to the shell to a second axial opening proximal to the rotating member, the injection tube having a leading edge which first contacts the gas circulating in the plenum and a trailing edge opposite to the leading edge, the second opening having a first portion orthogonal to the axis of the injection tube and a second portion across the trailing edge, adjacent to the first portion and parallel to the axis of the injection tube.Type: ApplicationFiled: October 24, 2014Publication date: September 29, 2016Inventors: Marco PELELLA, Andrea BERNOCCHI, Angelo GRIMALDI, Simone TANTERI
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Publication number: 20140133959Abstract: A multistage centrifugal turbomachine comprising a rotor assembly comprising a shaft carrying a first and a second impeller, and a stator comprising a passage for a fluid flowing from an outlet side of the first impeller to an inlet side of the second impeller, the passage comprising a diffuser downstream the outlet side of the first impeller), a return channel upstream the inlet side of the second impeller, a bend connecting the diffuser and the return channel, and a plurality of stator blades being provided in the return channel, wherein a portion of the return channel is delimited by the first impeller, the plurality of stator blades extending at least partially in the portion of the return channel.Type: ApplicationFiled: July 19, 2012Publication date: May 15, 2014Applicant: Nuovo Pignone S.p.AInventors: Giuseppe Iurisci, Angelo Grimaldi