Apparatus for testing pipes by a pipe tester

Details Apparatus for testing pipes by a pipe tester Apparatus for testing pipes by a pipe tester

1984-02-28

1985-08-27

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 34, F16J 1512

Patent

active

045374074

ABSTRACT:
A sealing arrangement around an end of a pipe received in a testhead of a hydraulic pipe testing apparatus, which sealing arrangement consists of an elastic sealing ring and an adjacent, rigid support ring of varying diameters. Both rings are mounted in radial recesses in the testhead and encircle the pipe upon its entry into the testhead. The recess for the elastic sealing ring consists of a flat ring located between the sealing ring and the rigid support ring. For a sealing condition, the support ring is contracted to abut the pipe and the sealing ring is caused to be deformed whereby it flows radially outwardly from its recess against the pipe and axially along the pipe towards and away from the pipe's end. In the axial direction away from the end of the pipe, the sealing ring flows around the flat ring to abut the rigid support ring.

REFERENCES:
patent: 3171381 (1965-03-01), Meek
patent: 3207221 (1965-09-01), Cochran
patent: 3764037 (1973-10-01), Rothrock
patent: 3815925 (1974-06-01), Mattoon
patent: 4295653 (1981-10-01), Coles
patent: 4394021 (1983-07-01), Merila277 34.3

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