Apparatus and method for hydrostatically testing pipe
OwnerThomas J. Machinventor
Life of this patent
Estimating the term…
Abstract
A hydrostatic tester for pipe has a frame. A pair of heads are mounted to the frame and spaced apart from each other for receiving a pipe between them. A piston is carried by the frame for moving one of the heads toward the other and holding the heads in abutment with the pipe. Each head has a mandrel, the mandrel having an outer surface that inserts into one of the ends of the pipe. A seal on the outer surface sealingly engages the inner diameter of the pipe. Another seal located on the head sealingly contacts one of the ends of the pipe.
Claims11
An apparatus for sealing an end of a pipe for hydrostatically testing the pipe, comprising:
- a mandrel having an outer surface for insertion into a pipe;
- an inner seal on the outer surface of the mandrel for sealingly engaging an inner diameter of the pipe;
- and
- an outer seal on the apparatus for engaging an exterior portion of the pipe.
An apparatus for hydrostatically testing pipe, comprising:
- a frame for holding a section of pipe;
- a pair of heads coaxially mounted to the frame and spaced apart from each other for receiving the pipe therebetween;
- a piston for moving one of the heads toward the other of the heads and for holding the heads in abutment with ends of the pipe;
- a mandrel on each of the heads, each of the mandrels having a cylindrical outer surface for insertion into one of the ends of the pipe;
- an inner seal on the outer surface of each of the mandrels for sealingly engaging an inner diameter of the pipe;
- an outer seal on each of the heads for sealingly contacting the ends of one of the pipes as the mandrels insert into the pipes;
- and
- a passage in at least one of the heads and at least one of the mandrels for introducing a liquid under pressure into an interior of the pipe.
A method for hydrostatically testing pipe, comprising:
- mounting a pair of heads coaxially in a frame and spaced apart from each other;
- providing a mandrel on each of the heads, each of the mandrels having an outer surface with an inner seal, each of the heads further having an outer seal;
- positioning a pipe between the heads;
- moving at least one of the heads toward the other, causing the mandrels to enter ends of the pipe, causing the inner seals to sealingly engage interior diameter portions of the pipe, and causing the outer seals to sealingly engage exterior portions of the pipe;
- then
- introducing a liquid under pressure into an interior of the pipe via a passage in at least one of the heads.
Dependencies are inferred from the claim text.