Nuovo Pignone

Firenze, Italy

Nuovo Pignone

Firenze, Italy

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Patent
Nuovo Pignone | Date: 2017-05-10

A crosshead (1 ) for a piston rod (4) comprises a main body (3) having a first (5) and a second seat (6), the first seat (5) is configured to hold a connecting rod (2), the second seat (6) is configured to hold a piston rod (4) wherein said main body (3) is made as a single piece.


Patent
Nuovo Pignone | Date: 2017-01-18

A turbomachine assembly (1) comprises: -a shaft (10), -a radial gas expander (2) supported on the shaft (10) between at one first bearing (11) and a second bearing (12), -a compressor (3) supported on the shaft(10) in overhung position adjacent to one or the other of said first and second bearings, -said compressor (3) including a plurality of movable inlet nozzles (20) and said radial gas expander (2) including a plurality of movable guide vanes (5a,b).


Patent
Nuovo Pignone | Date: 2017-04-05

A sealing device (1) is described, for separating a first compartment (3) from a second compartment (5) in a turbomachine, a wet gas being processed in the first compartment. The sealing device comprises a rotary component (7) and a stationary component (11). A sealing member (15T) is arranged between the rotary component and the stationary component. The device further comprises an annular wet-particles collector (21) and an oil-jet element (13), mounted on the rotary component (7) for rotation there with. The oil-jet element is surrounded by the annular wet-particles collector, such that wet particles contacting the oil-jet element are projected by centrifugal force into the annular wet-particles collector.


A method for preventing corrosion of an impeller-shaft assembly of a turbomachine comprises the steps of assembling an impeller (2) on a shaft (3) in order to define an impeller-shaft assembly (1); plating the assembly (1) by inserting said assembly (1) into a plating bath (12); coating at least a first predefined surface (5) on the impeller (2) and a second predefined surface (7) on the shaft (3), the coating step is performed by spraying the predefined surfaces (5, 7).


The method of manufacturing a component (40) of a turbomachine by powder metal hot isostatic pressing uses a container (41) defining outside surfaces (42A, 42B, 42C, 42D, 42E, 42F, 42G, 42H) of the component (40); a metal insert (443) is located inside the container (41) before filling the container (41) with metal powder; the insert (443) is left in the component (40) after the end of its manufacturing. Advantageously, a metal core (44) is located inside the container (41) before filling the container (41) with metal powder, the core (44) is removed from the component (40) before the end of its manufacturing. In this way, net shape surfaces may be obtained without manufacturing trials.


Patent
Nuovo Pignone | Date: 2017-01-25

Method of starting a gas turbine, comprising the steps of providing an apparatus (1) for regulating the flow of fuel in a gas turbine, the apparatus (1) comprising a main line (4) connecting a fuel source (2) to a nozzle array (N); an auxiliary line (8) connecting the fuel source (2) to the nozzle array (N); the method further comprises the steps of keeping the main line (4) sealed while increasing the auxiliary line (8) fuel flow rate; firing the gas turbine while keeping the main line (4) sealed; after the combustion has started in the gas turbine, opening the main line (4) for increasing the main line (4) fuel flow rate; the auxiliary line (8) maximum flow rate is less than the main line (4) maximum flow rate.


Patent
Nuovo Pignone | Date: 2017-04-05

A wet-gas centrifugal compressor (1) is disclosed. The compressor comprises a compressor casing (3) and at least one impeller (9) arranged in the compressor casing for rotation around a rotation axis (A-A). A stationary diffuser (21) is arranged in the compressor casing and extends around the impeller (9). The diffuser (21) has a curved end portion (21A) with a radially inner curved wall (27) and a radially outer curved wall (29). A plurality of dry-gas extraction holes (35) 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 (35) is oriented in a counter-flow direction with respect to a direction of the gas flow in the curved end portion (21A) of the diffuser (21).


Turbomachines, as well as their components, are disclosed being in the field of production and treatment of oil and gas containing e.g. hydrocarbon plus hydrogen sulfide, carbon dioxide, with or without other contaminants. Said components are made of a high corrosion high temperature resistant alloy, capable of resisting to corrosion and/or stress at high temperature better than state of art martensitic stainless steels and behaving similarly to premium nickel base superalloys.


Grant
Agency: European Commission | Branch: H2020 | Program: MSCA-ITN-ETN | Phase: MSCA-ITN-2016 | Award Amount: 3.94M | Year: 2016

Additive Manufacturing (AM) is a fastgrowing sector with the ability to evoke a revolution in manufacturing due to its almost unlimited design freedom and its capability to produce personalised parts locally and with efficient material use. AM companies however still face technological challenges such as limited precision due to shrinkage and buildin stresses and limited process stability and robustness. Moreover often postprocessing is needed due to the high roughness and remaining porosity. In addition qualified, trained personnel is hard to find. This ITN project will address both the technological and people challenges. To quality assure the parts produced, PAM will, through a close collaboration between industry and academia, address each of the various process stages of AM with a view to implementing good precision engineering practice. To ensure the availability of trained personnel, ESRs will, next to their individual research and complementary skills training, be immersed in the whole AM production chain through handson workshops where they will design, model, fabricate, measure and assess a specific product. The expected impact of PAM thus is: 1. The availability of intersectoral and interdisciplinary trained professionals in an industrial field thats very important for the future of Europe, both enhancing the ESR future career perspectives and advancing European industry. 2. The availability of high precision AM processes through improved layout rules with better use of AM possibilities, better modelling tools for firsttime right processing, possibility for insitu quality control ensuring process stability and, if still needed, optimised postprocessing routes 3. As a result of 1: an increased market acceptance and penetration of AM. 4. Through the early involvement of European industry: a growing importance of the European industrial players in this fastgrowing field. This will help Europe reach its target of 20% manufacturing share of GDP.


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: LCE-17-2015 | Award Amount: 9.63M | Year: 2016

The share of renewable energy is growing rapidly driven by the objective to reduce greenhouse gas emissions. The amount of electric power which can be supplied to the grid depends on the time of the day and weather conditions. A conventional fleet of thermal power plants is required to compensate for these fluctuations before large scale energy storage technologies will be mature and economically viable. All power market projections expect this to be the case for the next 50 years at least. For a strong expansion of renewables, this fleet has to operate flexibly at competitive cost. Current power plants cannot fill this role immediately without impeding their efficiency and engine lifetime through increased wear and damage induced by the higher number of (shorter) operating/loading cycles. New technologies need to be introduced to balance demand peaks with renewable output fluctuations at minimal fuel consumption and emissions without negative effects on cycling operation. The FLEXTURBINE partners have developed a medium to long term technology roadmap addressing future and existing power plants. The FLEXTURBINE project presented hereafter is the first step in such technology roadmap and consists of: (1) new solutions for extended operating ranges to predict and control flutter, (2) improved sealing and bearing designs to increase turbine lifetime and efficiency by reducing degradation/damages, and (3) an improved lifecycle management through better control and prediction of critical parts to improve competitive costs by more flexible service intervals and planned downtime, and by reducing unplanned outages. In all areas, individual technologies will be developed from TRL 3 to TRL 4-6. FLEXTURBINE brings together the main European turbine manufacturers, renowned research institutes and universities. It involves plant and transmission system operators to include user feedback and to prepare the take-up of the FLEXTURBINE technologies in power plants world-wide.

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