Speed control system for a pipeline inspection vehicle

Details Speed control system for a pipeline inspection vehicle Speed control system for a pipeline inspection vehicle

1981-07-24

1983-06-21

Reese, Randolph

Railways

Tubular way

Internal service device

105365, 188 83, 406 10, B65G 5120

Patent

active

043888712

ABSTRACT:
A pipeline inspection system in which a vehicle, which has sensors to detect flaws in the pipeline, is moveable within the pipeline by a fluid flowing in the pipeline, and wherein a speed control for the vehicle is provided by a braking device which imposes a continuous axial drag on the pipeline wall. This continuous axial drag is adjustable between upper and lower limits such that the summation of the variable drag characteristics of the pipeline and the imposed drag remains approximately constant and the vehicle will move at a speed substantially equal to the average flow velocity of the fluid in the pipeline.

REFERENCES:
patent: 2127429 (1938-08-01), Schoepf et al.
patent: 2617499 (1952-11-01), Jenkins et al.
patent: 2651387 (1953-09-01), Genter
patent: 3036530 (1962-05-01), Mills et al.
patent: 3243697 (1966-03-01), Schmidt
patent: 3495546 (1970-02-01), Brown et al.
patent: 3758050 (1973-09-01), Watts et al.

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