F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/12
F16L 55/18 (2006.01) F16L 55/128 (2006.01)
Patent
CA 1213530
PACKER FOR SEALING LATERAL LINES ABSTRACT An apparatus is disclosed for detecting leaks in, for instance, sewer pipes at the vulnerable point where a branch pipe meets the main pipe. The apparatus includes a packer member which travels along the main pipe by remote control. A T.V. camera assists in locating a branch pipe. When the travelling packer is correctly located, the operator inflates two bladders on the traveller, one either side of the branch, so as to seal off and contain an area between the bladders, the branch being located in this area. The operator (remotely) rotates the packer with respect to the bladders until a slot in the packer is orientated to the branch. The packer includes an inflatable tube that lies coiled about a shaft in the packer. Under operator control, the tube is inflated, which causes it to elongate. The shaft is rotated at the same time so that as the tube elongates, and stiffens, it enters the branch. The remote end of the tube forms a seal against the inside of the branch. Thus, the area of the branch near the junction with the main pipe is also included in the sealed off area between the two bladders. Now, leak-detecting fluid can be pumped into the sealed off space: if the pressure of that fluid drops, then a leak is present, and in that case a sealant fluid is pumped into the space. Afterwards, the tube can be deflated and retracted, the bladders also deflated, and the traveller repositioned at the next branch. The disclosure includes a method of detecting and sealing leaks, in which an inflatable tube is used to provide a means to enter the branch, and to seal the branch away from its junction with the main pipe.
445394
Cues Inc.
Marks & Clerk
LandOfFree
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