Abrégé

A method for making a safety element comprises the steps of preparing a sheet-like body (2) of pre-determined thickness, provided with a blocking peripheral annular portion (2a) and a central portion (2b), surrounded by the peripheral annular portion (2a) and active in use, preparing a first tubular portion (3) having its own annular abutting edge (3a), and connecting the sheet-like body (2) to at least the first tubular portion (3) by means of at least one welding step. The method further comprises, subsequently to the connection step, an incision step of the sheet-like body (2) by means of a laser beam (L) to obtain at least one frangible line adapted to allow yield of the sheet-like body (2) to a pre-set pressure.

Classes IPC  ?

• B23K 26/364 - Gravure au laser pour faire une rainure ou une saignée, p. ex. pour tracer une rainure d'amorce de rupture
• F16K 17/16 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage ouvrant sur excès de pression d'un côtéSoupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté avec élément de rupture l'élément étant un diaphragme de rupture

Abrégé

A safety or rupture element, preferably a rupture disc (1) having at least one petal (2") and configured to facilitate the opening of this at least one petal (2") for the purposes of discharging the fluid, so as to increase the passage or discharge section defined by the disc (1) in a discharge configuration and, in any case, prevent detachment of this at least one petal (2").

Classes IPC  ?

• F16K 17/16 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage ouvrant sur excès de pression d'un côtéSoupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté avec élément de rupture l'élément étant un diaphragme de rupture

Abrégé

A safety device (1) for pipelines, comprising: - a rupture disc (2) shaped so as to be arranged along a pipeline (T), transversely thereto, and having a rupture portion (3) dimensioned so as to occlude said pipeline (T) and wherein a number of frangible lines (3') are defined and in turn define a plurality of petals (3"), wherein said frangible lines (3') are dimensioned so as to split open, in a discharge state of said device (1), and said petals (3") are suitable for opening, along said frangible lines (3'), so as to define a discharge section (S) for passage of said fluid coming from said pipeline (T), comprising a support (6) having a central opening (6') delimited by a number of sides (6") at least equal to the number of petals (3") and at least partly facing said rupture disc (2);said support (6) being suitable for installation in proximity to said rupture disc (2), so that each one of said petals (3") is apt for abutting, in said discharge state of said device (1), against a respective side (6") of said central opening (6').

Classes IPC  ?

• F16K 17/16 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage ouvrant sur excès de pression d'un côtéSoupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté avec élément de rupture l'élément étant un diaphragme de rupture

Abrégé

A safety or rupture element for a pipeline through which a fluid passes, comprises a sheet-like body (2) equipped with a rounded central portion (2a) and an annular peripheral portion (2b), wherein the concave face (5a) of the rounded central portion (2a) has at least one curved frangible line (6) that is proximal to the annular peripheral portion (2b) and realized by means of a laser. The curved frangible line (6) has a depth (P1) dimensioned so as to split open upon reaching a pre-established pressure on the convex face (5b), so as to define a petal (3) apt for reversing and enabling outflow of the fluid The element further comprises at least one reversal initiating and guiding zone (8), said zone being defined by at least a first (9a) and a second incision (9b), both of which are discrete and realized on said first face (5a) of the rounded central portion (2a);the first discrete incision (9a) is realized at a centre (C) of the rounded central portion (2a) and the second discrete incision (9b) is realized in an intermediate zone (I) between the centre (C) and the curved frangible line (6) so that a preferential reversal axis (A) oriented towards the frangible line (6) is defined between the incisions (9a, 9b).

Classes IPC  ?

• F16K 17/16 - Soupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage ouvrant sur excès de pression d'un côtéSoupapes ou clapets de sûretéSoupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté avec élément de rupture l'élément étant un diaphragme de rupture