摘要:
A pipeline breakaway coupling (10) comprising a pair of valve housing members (12, 14) fixedly attached to each other by means of one or more breakaway coupling members (16). The valve housing members (12,14) define a hollow bore (18) along which flowable material may flow and the breakaway coupling members (16) permit the valve housing members (12,14) to separate from each other when exposed to a tensile load exceeding a predetermined limit An end cap (26) releasably connected to each valve housing member (12,14) to allow connection of the valve housing members (12, 14) to respective inlet and outlet pipelines. A valve cassette (20) is releasably retained between each valve housing member (12, 14) and the respective end cap (26). Each valve cassette (20) includes a valve member (22) movable between a valve open position and a valve closed position. The valve member (22) when at its valve closed position being sealingly engaged with a valve seat (24) formed in respective valve housing member (12, 14), thereby closing the hollow bore in the respective valve housing member (12,14). Each valve member (22) is biased to move to its valve closed position on separation of the valve housing members (12, 14).
摘要:
The high-pressure output (2) of a donor container is coupled to a user system (11) by means of a main transfer tube (4) through a pilot valve (5) controllable by an auxiliary line (6) which is connected (12) to an auxiliary circuit of the system (11), extends along the main tube (15) and is fixed thereto by the reduced length thereof at several distinct points (Si). In such a way, the rupture or inflammable leakage of the tube (4) generates the tearing off or meting of the auxiliary line (6) in such a way that the output valve (5) is immediately closed. Said invention is particularly suitable for an inflammable gas supply to stationary plants.
摘要:
A breakaway device joins a portion of a dispensing hose that is connected to a fueling station with a portion of a dispensing hose that is joined to a coupling that connects to a vehicle during fueling. The breakaway device includes a pair of leg members that are joined by their proximal ends to the dispensing hose portions. The distal ends of the leg members are joined at an angle to a frangible member that includes a pair of inner segments that are joined in an abutting fashion by a surrounding frangible sleeve. When a driveaway occurs, the leg members are pulled apart and exert a bending moment on the frangible member. As a result, the frangible member breaks which prevents significant damage to the station. A pneumatic line that provides pressurized air to open the station dispensing valve is attached to each leg member so that when the frangible member breaks, the pneumatic line is ruptured so that pressurized air is no longer delivered to the dispensing valve. As a result, the dispensing valve closes and fuel is no longer delivered to the dispensing hose.
摘要:
The invention relates to a connection coupling which forms a line connection for liquid or gaseous materials on plate-shaped microcomponents (1). A coupling body (2) which has an essentially U-shaped cross-section accommodates the edge of the plate-shaped microcomponent (1) between an upper limb plate (3), said upper limb plated comprising the line connection (14), and a lower limb plate (5). An edge connecting element (6) forms a transversal stop for an edge (8) of the microcomponent (1). An additional stopping means, for example, a catch (9), forms a longitudinal stop for positioning the microcomponents (1).
摘要:
The device is for use in the event of the breakage of pipes (2) for conveying fluids and comprises two adjacent valves (4) arranged in series in the pipe (2). Each valve (4) includes a hollow body (8) having means (14, 12) with a predetermined breaking load for joining it to the body (8) of the other valve (2) and means (12, 18) for joining it to the adjacent portion of pipe (2), and an obturator (24) which is rotatable in the body (8) so that it can assume a shut-off position transverse the pipe (2) and an open position substantially perpendicular to its shut-off position. The obturator (24) has means (40) for engaging the obturator (24) of the other valve (4), the means fixing the two obturators (24) in a contiguous arrangement in their open positions, which they assume normally, and releasing the obturators (24) so that they can assume their shut-off configurations when the valves (4) move apart because their joining means (14) have been subjected to loads equal to or greater than their breaking loads.
摘要:
On utilise le dispositif lors de la rupture de canalisations (2) destinées au transport des fluides, lequel dispositif comprend deux vannes adjacentes (4) disposées en série dans la canalisation (2). Chaque vanne (4) comprend un corps creux (8) possédant des moyens (14, 12) avec charge de rupture prédéterminée permettant son raccordement au corps (8) de l'autre vanne (2) et des moyens (12, 18) de liaison à la partie adjacente de la canalisation (2), et un obturateur (24) mobile autour d'un axe dans le corps (8) de façon à pouvoir adopter une position transversale d'obturation de la canalisation et une position essentiellement perpendiculaire à sa position d'obturation. L'obturateur (24) possède un moyen (40) entraînant l'obturateur (24) de l'autre vanne (4), ce moyen (40) maintenant les deux obturateurs (24) en position ouverte selon une dispositon contiguë qu'ils occupent normalement, et relâchant les obturateurs (24) pour leur permettre d'adopter la position fermée lors de l'écartement des vannes (4) dû à l'application sur le moyen de liaison (14) de charges égales ou supérieures à leurs charges de rupture.