Nuovo Pignone Tecnologie Srl

Nuovo Pignone Srl

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Nuovo Pignone Spa

Alberto Babbini

Riccardo Bagagli

Leonardo Tognarelli

Federico Puccinelli

Gianni Orsi

Pierluigi Tozzi

Massimo Bargiacchi

Carmelo Maggi

Riccardo Maleci

Stephen Joseph Waymeyer

Guido Pratelli

Francesco Buffa

Iacopo Giovannetti

Federico Sorgona

Ricardo Maleci

Douglas Michael McClure

Aigbedion Akwara

Federico Sorgona′

Federico Cappelli

Described herein is a packing box for mounting on a machinery shaft. In accordance with one aspect, the packing box housing defines a central opening for insertion of a movable machinery shaft with a hollow passageway surrounding the central opening to form a path for the flow of a fluid coolant. The passageway is provided with a fluid inlet port and a fluid outlet port opening onto the outer surface of the packing box housing, and it is formed by a single conduit or by a plurality of conduits obtained through additive manufacturing process and connected in series or in parallel to wound around the central opening.

Stuffing box for use with reciprocal moveable piston rods and method of manufacturing

An automatic ring valvecomprising a valve seatprovided with a plurality of gas flow passagesarranged according to at least one annular row, at least a shuttercomprising at least one ring-shaped portion for selectively closing and opening the gas flow passages, wherein said ring-shaped portion of the shuttercomprises a fiber-reinforced matrix, at least one contrasting member for contrasting an opening movement of ring-shaped portion of the shutter, wherein said ring-shaped portion of the shuttercomprises a structural coreA made by said fiber-reinforced matrix, and wherein at least a portion of said structural coreA is covered by at least one primary layerB, designed to improve fracture and/or impact and/or wear resistance of said ring-shaped portion.

Automatic ring valve, shutters for automatic ring valves, and method for manufacturing said shutters

It is disclosed a valve () for a reciprocating compressor, comprising a valve body () which comprises a seat () and a guard (), the seat () and the guard () developing substantially parallel to a valve plane (A). The valve () also comprises a hydraulic apparatus () with pistons () and a hydraulic circuit () provided with a first portion () which is made by additive manufacturing technology according to digital 3D design data.

Reciprocating compressor valve body made by additive manufacturing

It is disclosed a reciprocating compressor having a cylinder body that defines a cylinder; the cylinder may have a cylinder lateral wall and a cylinder axis A and inside it a piston is movable; at least one valve is provided to selectively open and close a valve opening formed in the cylinder lateral wall; cylinder heads at least partially protruding towards the piston inside the cylinder have a recessed surface at least partially facing the valve openings; an intersection between at least a plane containing the cylinder axis A and the recessed surface is a first curve having at least a convex part facing the valve opening.

Reciprocating compressor

Fluid flow adapter for a cylinder of a reciprocating compressor, the cylinder having a side wall provided with a valve seat, the fluid flow adapter comprising a filler element having an internal surface facing an internal volume of the cylinder and an external surface facing the valve, the filler element having at least a channel connecting the internal surface to the external surface, wherein the internal surface is flush with the side wall of the cylinder, the channel being configured to allow the passage of fluid between the internal volume of the cylinder and the valve.

Fluid flow adapter for a cylinder of a reciprocating compressor

A valve for a reciprocating compressor comprises a valve body having a seat and a guard; a shutter element placed between the seat and the guard and configured to move between a closed position in which the passage of fluid is prevented and an open position in which the passage of fluid is allowed; an hydraulic apparatus for moving the shutter element between the open and closed positions, the hydraulic apparatus comprising an hydraulic circuit having at least a portion integrated in the valve body.

Valve for a reciprocating compressor

An automatic ring valve comprising a valve seat provided with a plurality of gas flow passages arranged according to at least one annular row, at least a shutter comprising at least one ring-shaped portion for selectively closing and opening the gas flow passages, wherein the ring-shaped portion of the shutter comprises a fiber-reinforced matrix, at least one contrasting member for contrasting an opening movement of ring-shaped portion of the shutter, wherein the ring-shaped portion of the shutter comprises continuous fibers, at least some of the fibers developing for at least 360&#xb0; of the annular development of the ring-shaped portion.

Automatic ring valve shutters for automatic ring valves and method for manufacturing said shutters

Disclosed is a differential pressure valve comprising: a valve body, the valve body having at least one flow inlet and one flow outlet: at least one shutter, the shutter being movable between an open position and a closed position under a differential pressure across the valve; at least one flow passage from the flow inlet to the flow outlet; at least one biasing member configured to bias the shutter towards a closed position so as to block the flow passage through the flow inlet. The biasing member is a non-linear biasing member.

Differential pressure valve with reduced spring-surge and method for reducing spring surge

An automatic valve including a valve seat having first gas flow passages extending there through and a valve guard having second gas flow passages extending there through. The valve further comprises at least one shutter member movably arranged between the valve guard and the valve seat, at least one set of spring members biasing the at least one shutter member towards a closed position in sealing engagement with the valve seat to close the first gas flow passages, and at least one spring holder ring provided with a plurality of spring retention seats. Each spring member of the set of spring members is partially housed in a respective spring pocket formed in the valve guard and retained in a respective one of the spring retention seat.

Automatic valve with a spring holder ring

A differential pressure valve is disclosed, comprising: a valve body, the valve body having at least one flow inlet and one flow outlet; at least one shutter, the shutter being movable between an open position and a closed position under a differential pressure across the valve; a flow passage from the flow inlet to the flow outlet; at least one biasing member configured to bias the shutter towards a closed position so as to block the flow passage through the flow inlet. The biasing member comprises at least two springs arranged in parallel, one of the springs having at least one resonance frequency different from at least one resonance frequency of the other of the two springs.

Growing community of inventors

Florence, Italy

Alberto Babbini