Inspection of pipe interior

专利名称：Inspection of pipe interior

发明人：Anthony G. Razzell,Robert J. Mitchell申请号：US13439438申请日：20120404公开号：US08869638B2公开日：20141028

专利附图：

摘要：A method for inspecting the interior of a non-horizontal pipe includes (a) fillingthe pipe with a first fluid, (b) feeding a second fluid into a lower part of the pipe when thesecond fluid is more dense than the first fluid or into an upper part of the pipe when thesecond fluid is less dense than the second fluid the pipe, a meniscus forming between the

first and the second fluid and moving along the pipe, (c) introducing an inspection devicehaving an average density between the densities of the first and second fluids such thatthe device locates at and moves with the meniscus, (d) obtaining inspection data from theinspection device as the device moves along the pipe, (e) determining positions of themeniscus as it moves along the pipe, and (f) relating the meniscus positions to positionsat which the inspection data is obtained.

申请人：Anthony G. Razzell,Robert J. Mitchell

地址：Derby GB,Derby GB

国籍：GB,GB

代理机构：Oliff PLC

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