| 摘要 |
<p>A plug means (64) for effecting a temporary blockage of a passage (95) through which liquid is designed to flow. The subject plug means (64) includes a frame means (66,68) capable of being readily disassembled and embodying in the assembled state dimensions corresponding to the cross-sectional dimensions of the passage (95) in which the plug means (64) is to be employed, and inflatable means mountable on the frame means and co-operable therewith for providing a liquid tight seal in the passage (95). The frame means comprises a frame (66,68) member including a plurality of readily interconnectable sections of plate, 74,76,78,80,82,84) the latter each possessing a high strength-to-weight ratio; interconnecting means (86,88,90,92) effecting the interconnection of the plurality of plate sections (74,76,78,80,82,84), and securing means (106,108) cooperable with means (114,116) provided in the side walls of the passage (95) for securing the frame means and thereby the plug means (64) in the passage (95) in blocking relation thereto. The inflatable means includes at least one resilient member (70,72) that is provided with a rim in the form of an inflatable bead (70a,72a). The inflatable means is moutable on the frame member (66,68) so as to be positionable substantially in circumferentially enveloping relation relative thereto. The inflatable means further includes an externally accessible inflation means (98,100) connected to the inflatable bead (70a,72a), and operable to effect the inflation thereof.</p> |
