Method and apparatus for the maintenance of pipelines
OwnerShlomo Klineinventor
Life of this patent
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Abstract
Method and apparatus for the maintenance of pipelines. A number of points along the pipeline (30) is selected and the pipeline is raised at these points by an amount that the height difference between these points does not exceed the international flexibility standards. The pipeline (30) is supported at these points and thereafter maintenance is performed on those segments which have been raised enough to allow performance of the maintenance procedures. The distance between two adjacent points may be 30 meters and the height difference between two adjacent points may be not more than and preferably close to 22 cm. The initial cross-section of the selected segments are allowed to rest on the beds of the trenches because of their weights.
Claims24
Method for the maintenance of pipelines, which comprises selecting a number of points along the pipeline and raising the pipeline at these points by such an amount that the height difference between these points does not exceed the international flexibility standards, supporting the pipeline at these points and thereafter performing maintenance on those segments which have been raised enough to allow performance of said maintenance.
Apparatus for the maintenance of pipelines, which comprises:
- (a) at least one lifting frame, having telescopic legs and a transverse top beam;
- (b) telescopic lifting arms supported in said top beam;
- (c) flexible means connected to said lifting arms for engaging the bottom of the pipeline;
- (d) first hydraulic means for telescopically extending and retracting said legs of the lifting frame;
- and
- (e) second hydraulic means for telescopically extending and retracting said lifting arms.
Apparatus for the maintenance of pipeline, substantially as described and illustrated.
Method for the maintenance of pipelines, substantially as described and illustrated.
Dependencies are inferred from the claim text.