G - Physics – 05 – D
Patent
G - Physics
05
D
137/137
G05D 7/00 (2006.01) F16L 55/16 (2006.01) H01B 9/06 (2006.01)
Patent
CA 1199853
Abstract This invention relates to a method for reducing or stopping fluid leakages into or out from a fluid conduit (1). In particular leakages due to differences in specific gravity of the internal and external fluid are prevented, and not leakages due to high differential pressures. It also concerns a fluid flow deflector arranged at intervals along the conduit to implement this method. Fluid leakages may occur e.g. from submerged fluid flow conduits due to damages caused by external strain. As fluid leaks out, water will penetrate into the conduit and replace the leaked out fluid. The polluted fluid is expensive, has an adverse effect on the environ- ments, and later on it has to be replaced. The ingressed water may have a detrimental effect on the conduit in particular if the conduit is included in a paper insulated electric cable. To avoid or limit both fluid pollution and water ingress, it is proposed to arrange a "water trap" shaped disalignment of the fluid conduit at intervals. The "water trap" may be arranged internally in the conduit or may be obtained by laying the conduit itself in a curled manner. The main application field is in ducts for an insulating agent in electrical cables, and in particu- lar in paper- and oil-insulated power cables. By introducing a flow path disalignment in several or all spatial directions a multi-directional or omni- directional "water trap" is obtained.
411781
International Standard Electric Corporation
Smart & Biggar
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