Pipe Clamping Apparatus

Abstract: A pipe clamping apparatus for containing a fluid leaking from a pipe is provided. The pipe clamping apparatus comprises first and second housing members (12,14) connected by a hinge (16) and suitable for placing on a surface of a pipe (24) to define an enclosed cavity (40) between the first and second housing members and the surface of the pipe in a fully closed position of the pipe clamping apparatus. A clamping assembly is operable to hold the first and second housing members (12,14) in a sealed engagement with the pipe (24) to seal the enclosed cavity (40) and provide a fluid tight seal between the housing members and the pipe. The first and second housing members (12,14) are each provided with mutually engaging sealing surfaces (20) adapted to provide a fluid tight seal between the first and second housing members, at least one of the mutually engaging sealing surfaces having a first resilient seal means (72a) secured thereto. The first and second housing members (12,14) are also each provided with pipe sealing surfaces (22) adapted to provide a fluid tight seal between a surface of the pipe (24) and the housing member (12,14), each cylindrical sealing surface having a second resilient seal means (72b) secured thereto. The first and second housing members (12,14) are each provided with part-cylindrical friction surfaces (23) separate from the pipe sealing surfaces (22) and adapted to provide a frictional resistance against axial and/or rotational movement of the pipe clamping apparatus relative to the pipe (24), each cylindrical friction surface having a resilient friction means (68) secured thereto. A second pipe clamping apparatus for application to a pipe for isolating the pipe by freezing fluid carried in the pipe is also provided, this second clamping apparatus having a similar set of components to that of the first clamping apparatus.

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