초록 ▼

A break-away coupling device for use with a hoseline or pipeline for conveying hazardous fluids. The coupling comprises coupling members (10, 11) of generally tubular form for connection at their outer ends (14, 15) to a hoseline, pipeline or other fluid-supply or fluid-delivery point, and provided

A break-away coupling device for use with a hoseline or pipeline for conveying hazardous fluids. The coupling comprises coupling members (10, 11) of generally tubular form for connection at their outer ends (14, 15) to a hoseline, pipeline or other fluid-supply or fluid-delivery point, and provided at their inner ends with complementary faces (12, 13) which are held in sealing engagement by frangible connectors (18). The coupling members have valve seats (45), and valve members (30, 31) which are urged towards closing engagement with said seats but are usually being held against the springs (36) and out of engagement with the seats until the coupling members are separated on breaking of the connectors. An annular separating ram (51) is provided to apply pressure between the coupling members which will break the connectors and separate the coupling members, whereupon the valve members will seat under spring action and minimize spillage of the fluid being conveyed.

대표청구항 ▼

A break-away coupling device for use with a hoseline or pipeline, comprising a first coupling member of generally tubular form for connection at its one end to a length of hoseline, pipeline or other fluid-supply or fluid-delivery point, and provided at its other end with a face to be held in sealin

A break-away coupling device for use with a hoseline or pipeline, comprising a first coupling member of generally tubular form for connection at its one end to a length of hoseline, pipeline or other fluid-supply or fluid-delivery point, and provided at its other end with a face to be held in sealing engagement with a complementary face of a second coupling member; frangible means holding said faces in sealing engagement; said first coupling member further comprising a valve seat and a valve member, and spring means urging the valve member towards closing engagement with said seat but the valve member usually being held against said spring means out of engagement with the valve seat until said coupling members are separated on breaking of the frangible means; and, separating means to apply pressure between said coupling members which will break said frangible means and separate said faces and said coupling members said separating means comprising an annular channel in the face of one of said coupling members and an annular piston slidably nesting in said channel, whereby the application of fluid pressure to the base of said channel will drive the piston to engage the face of said other coupling member and separate the coupling members.