Device for stopping fluid flow from a pipe

Details Device for stopping fluid flow from a pipe Device for stopping fluid flow from a pipe

1978-06-20

1980-05-20

Cline, William R.

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

137 13, 137340, 166 57, 166302, F17D 116

Patent

active

042034728

ABSTRACT:
An apparatus for stopping the fluid flow through a pipe by freezing the fluid. The apparatus is for use especially in oil wells, gas wells, and the like. A head of arcuate shape has inwardly radially extending fingers whose purpose is to locate the pipe in the center of the head. The head is securely attached to a bar for supporting and transporting the entire device. The head has attached thereto a supply tube with jets radially extending from the supply tube toward the pipe. The jets supply a pressurized refrigerant about the periphery of the pipe, this refrigerant lowers the temperature of the pipe sufficiently to freeze the contents and thus stops the flow within the pipe.

REFERENCES:
patent: 2929451 (1960-03-01), Hurlstone et al.
patent: 3228471 (1966-01-01), Shook
patent: 3343605 (1967-09-01), Phelan
patent: 3738424 (1973-06-01), Osmun et al.
patent: 3811510 (1974-05-01), Rogers et al.
patent: 3885629 (1975-05-01), Erb
patent: 3989108 (1976-11-01), Allen
patent: 4082109 (1978-04-01), Sun et al.

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