Automatic ring valve shutters for automatic ring valves and method for manufacturing said shutters
AssigneeNuovo Pignone S.p.A.
InventorsFrancesco BUFFA, Alberto BABBINI, Pierluigi TOZZI
Life of this patent
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Abstract
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° of the annular development of the ring-shaped portion.
Claims25
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, and
- 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° of the annular development of the ring-shaped portion.
A reciprocating compressor comprising an automatic ring valve, wherein the automatic ring valve comprises:
- 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, and
- 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° of the annular development of the ring-shaped portion
A method for manufacturing a shutter or a shutter portion for an automatic ring valve, comprising the steps of:
- winding at least one flexible element comprising a polymeric resin and continuous fibers, with fibers arranged in and along the flexible element, on and around a cylindrical structure, such that a substantially cylindrical multilayers configuration is formed,
- bonding the layers of the at least one flexible element to form a one-piece product having a broadly cylindrical shape, and
- cutting at least one ring-shaped portion from a part of the one piece product.
Dependencies are inferred from the claim text.