Jacket construction for pipe coupling

In a fluid conveying system including a pair of pipes having opposing end portions positioned in fluid communication, fastener means cooperating with the opposing end portions of the pipes to releasably secure the pipes together in fluid-tight sealing relation, the opposing end portions of the pipes and the cooperating fastener means collectively defining an enlarged coupling having a predetermined external surface configuration, and jacket means extending along said pipes in surrounding relation thereto and adapted for circulation of a temperature controlling fluid into heat-transferring relation with the pipes, the combination therewith of means cooperating with the enlarged coupling for directing a temperature controlling fluid into heat-transferring relation thereto, said means comprising a pair of similarly shaped cast blocks of heat conductive material cooperating with one another from opposite sides of pipes to substantially surround and enclose the opposing end portions of said pipes and the fastener means associated therewith, each block having a body portion extending in closely conforming heat-transferring relation circumferentially along the outer peripheral surfaces of said coupling and having a pair of spaced apart leg portions extending inwardly from the body portion in straddling relation alongside the endmost peripheral portions of said coupling, each block having an enclosed fluid passageway extending therethrough with inlet and outlet ports for circulation of a temperature controlling fluid through the passageway, and means cooperating with said pair of blocks for securing the blocks in cooperating substantially surrounding relation to said opposing end portions of said pipes and the fastener means associated therewith.

In a fluid conveying system including a pair of pipes having opposing end portions positioned in fluid communication, fastener means cooperating with the opposing end portions of the pipes to releasably secure the pipes together in fluid-tight sealing relation, the opposing end portions of the pipes and the cooperating fastener means collectively defining an enlarged coupling having a predetermined external surface configuration substantially larger than adjoining portions of said pipes, and each pipe having jacket means extending along the pipe in surrounding relation thereto with non-jacketed portions adjacent said end portions, said jacket means being adapted for circulation of a temperature controlling fluid into heat-transferring relation with the pipes, the combination therewith of means positioned between the jacketed portions of said pipes and substantially surrounding and enclosing said enlarged coupling and cooperating therewith and with said non-jacketed portions of said pipes for directing a temperature controlling fluid into heat-transferring relation thereto, said means comprising a cooperating pair of symmetrically shaped cast blocks of substantially equal size having cooperating concave inner surface portions collectively defining a hollow chamber substantially conforming to said predetermined external surface configuration of said enlarged coupling so as to receive the coupling therein in effective heat-transferring relation with the blocks, a hollow member of relatively thin heat conductive material embedded within each cast block and surrounded by the block and defining a fluid passageway through the block, said hollow member being provided with inlet and outlet ports for circulation of the temperature controlling fluid through the hollow member, and means carried by said pair of blocks for positioning the same in predetermined cooperating relation around the interconnected pipes.