| 摘要 |
<p>A connector for piping destined to the transfer of fluid at very low temperature, in particular liquefied natural gas is described. The coupling comprises a first and a second length of piping ( 8, 9 ) that are provided with respective closing valves ( 20, 27 ) and destined to be fastened, respectively, to a piping ( 2 ) for the inflow of the fluid and to a piping ( 6 ) for the receiving of the fluid. Onto the second length of piping ( 9 ) a quick-coupling mechanism ( 34 ) is mounted that comprises a circumferential sequence of jaws ( 36 ) that are suitable to provide a firm front coupling between terminal flanges ( 12, 17 ) of the two lengths of piping ( 8, 9 ), and means ( 35 38 ) for the driving of the jaws. Each one of said lengths of piping ( 8, 9 ) is surrounded by an external coating band ( 23, 30 ) that defines with said length of piping a thermally insulating interspace ( 25, 32 ). The two coating bands ( 23, 30 ) are passed through by respective mechanisms ( 22, 29 ) for the transmission of the motion to said closing valves ( 20, 27 ) and the coating band ( 30 ) of the second length of piping ( 9 ) serves as a support for said quick-coupling mechanism ( 34 ).</p> |
