| 摘要 |
PCT No. PCT/US80/01447 Sec. 371 Date Jul. 20, 1981 Sec. 102(e) Date Jul. 20, 1981 PCT Filed Oct. 29, 1980 PCT Pub. No. WO82/01591 PCT Pub. Date May 13, 1982.A leak detection method and apparatus is disclosed, the apparatus comprising an enclosing temporary removable casing member which is connectable about a section of piping to be tested. The casing member provides openings which allow the passage of a section of piping to be tested therethrough, with the portion to be tested being sealably housed on the inner portion of the casing. The casing thus provides an inner leak recovery collection space between the casing and the section of the piping to be tested. The casing in the preferred embodiment is comprised of a pair of casing halves which are structurally connected about the section of piping to be tested by means of a bolted connection, for example, with flanged mating surfaces of each casing half registering and abutting to form a sealable connection about the section of the pipe to be tested. A suitable sealing interface is provided which can be, for example, in the form of a gasket member between the respective casing halves as well as between the piping section to be tested and the openings in the casing. A control valve mounted in the wall of the casing senses the presence of leakage within the casing member attached to the pipe.
|
