Measuring and testing – Inspecting
Patent
1987-08-06
1989-02-28
Levy, Stewart J.
Measuring and testing
Inspecting
738665, G01B 528
Patent
active
048074845
ABSTRACT:
An apparatus for the measurement and non-destructive material testing of laid pipelines in the form of a scraper moved through the pipeline and guided on the inner wall thereof, has at least one circular support with sensors arranged on the circumference thereof and at least one pressure-tight casing, which has devices for processing and recording the measured values and the power supply. In order to ensure that the sensors are always at the minimum constant distance and with a constant angular position with respect to the pipe wall, the support is constructed as a cylindrical sleeve made from a rubber elastic material and is provided with an axially, radially and circumferentially regular profile, whose protuberances are located on a cylindrical envelope surface with a somewhat larger external diameter than the internal diameter of the pipeline and in whose depressions the sensors are arranged on a surface concentric to the envelope surface. The sleeve is attached by universal joint to the trailing end of the scraper.
REFERENCES:
patent: 4098126 (1978-07-01), Howard
patent: 4342225 (1982-08-01), Jandera et al.
patent: 4457073 (1984-07-01), Payne
Bell Robert P.
Kernforschungszentrum Karlsruhe GmbH and Pipetronix GmbH
Levy Stewart J.
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