Propulsion pipe laying system

Details Propulsion pipe laying system Propulsion pipe laying system

1983-08-18

1984-12-11

Taylor, Dennis L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Repair, replacement, or improvement

175 62, 405248, F16L 102

Patent

active

044875258

ABSTRACT:
A propulsion-jack driven pipe laying system including a pilot head having a cutter mounted at the leading end thereof and a propulsion-jack mounted in a pit behind the pilot head for propelling the same into the underground. The system further includes a water supply pipe and a slurry discharge pipe both mounted to the pilot head. Earth and sand excavated by the cutter is introduced into a receiving chamber where it is mixed with water supplied through the water pipe and converted into a slurry and the slurry is discharged through the slurry discharge pipe.
In one embodiment, a flowmeter is disposed in a slurry conduit connected with the slurry discharge pipe for detecting flow rate of the slurry and controlling the restriction rate of a valve disposed in the slurry conduit. In another embodiment, a differential pressure detector is mounted within underground pressure at the cutter and a pressure in the receiving chamber and controlling the restriction rate of a valve disposed in the slurry circuit.

REFERENCES:
patent: 3356167 (1967-12-01), Trent
patent: 3526285 (1970-09-01), Adkins et al.
patent: 3635036 (1972-01-01), Hooper
patent: 3767836 (1973-10-01), Geis et al.
patent: 3845828 (1974-11-01), Taylor et al.
patent: 4091631 (1978-05-01), Cherrington
patent: 4226477 (1980-10-01), Capoccia

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