Double containment pipe sections

Details Double containment pipe sections Double containment pipe sections

1997-02-14

2000-02-22

Hook, James F.

Pipes and tubular conduits

Plural duct

With spacer and encircling element

138113, 138123, 138146, 138104, F16L 918

Patent

active

06026862&

ABSTRACT:
A double containment glass fiber pipe section is formed by a single winding operation. The pipe section may be a pipe or a pipe fitting. A section of primary pipe is wound and wrapped by a plastic tape. A permeable material layer is then wrapped around the wrapped primary section. One or more plastic tape layers are then wrapped over the permeable material layer followed by a winding of the secondary pipe section. The assembly is then cured forming a double containment pipe section having a permeable annulus having a radial thickness of about 1 mm. The permeable annulus is defined by the permeable material between the primary and the secondary sections. The permeable material allows for the flow of fluids within the annulus. A pair of wires may be helically wound within the annular space and can be used to detect leakage from the primary pipe section flowing within the annulus by monitoring changes in the capacitance or the resistance between the wires.

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