Automatic pulsing valve

Details Automatic pulsing valve Automatic pulsing valve

1992-08-26

1993-12-14

Nilson, Robert G.

Fluid handling

Processes

Carbonated beverage handling processes

137517, 13762414, F16K 3112

Patent

active

052693350

ABSTRACT:
A method and apparatus for detecting the location of subterranean pipe includes sensors 24 and 26 which detect seismic energy. A pulsing valve (20) is disposed on one end of a water line (10) to allow water to intermittently flow and be shut off. This results in a water hammer effect which send shock waves (22) outward from the pipe (10). This is detected by the sensors (24) and (26) and then transmitted to a detector (32) to provide a differential indication. The locations of the sensors (24) and (26) will determine the differential balances therebetween such that when the sensors (24) and (26) are directly over the pipe (10), an indication of the location of the pipe is provided. Further, a reference sensor (19) is provided to allow distance measurement along the pipe by measuring the difference between the received energy at sensor (19) and either of sensors (24) or (26).

REFERENCES:
patent: 920716 (1909-05-01), Beckman
patent: 1764181 (1930-06-01), Raetz
patent: 1796941 (1931-03-01), Pottenger, Jr.
patent: 3583440 (1971-06-01), Andersson
patent: 3698416 (1972-10-01), Kwok
patent: 4246921 (1981-01-01), Beccaria, et al.
patent: 4753260 (1988-06-01), Gibbs
patent: 4781217 (1988-11-01), Rosenberg
patent: 4922962 (1990-05-01), Jones

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