Method and device for introducing a coating into pipes
OwnerWalter Hecken, Wolfgang Leichnitzinventors
Life of this patent
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Abstract
Device for introducing a coating into pipes and pipe bends and, more generally, into rotationally symmetrical bodies open at only at least one end, with an elastic, elongate, inflatable core (12), the so-called “variocore”.
Claims20
Device for introducing a coating into pipes and pipe bends and, more generally, into rotationally symmetrical bodies open at only at least one end, characterized by an elastic, elongate, inflatable core (12), the so-called “variocore” (12).
Device according to one of the preceding claims, characterized in that the “variocore” (12) consists of a dimensionally stable elastomer with a fabric insert having a specific elastic winding angle.
Device according to one of the preceding claims, characterized in that the elastic “variocore” (12) is assigned to spreaders to be fastened on the inside of the pipe or pipe bend.
Device according to one of the preceding claims, characterized in that only one end has spreaders (14).
Device according to one of the preceding claims, characterized in that one end is closed by means of a plug (28) and a type of hose clip and is of a size smaller than the inside diameter to be produced for the inner lining.
Device according to one of the preceding claims, characterized in that the “variocore” (12) is designed for filling with a fluid, specifically, at lower pressures, with air, and, at higher pressures, with water.
Device according to one of the preceding claims, characterized in that in the region of the other end of the “variocore” (12) are provided a cover (34), a shut-off member (20) assigned to the latter and a pressure-measuring instrument (18) and, outside the “variocore” (12) and surrounding the latter, a charging funnel (16) for the lining material.
Device according to one of the preceding claims, characterized in that the “variocore” (12) is designed for the filling of pipe bends and rotationally symmetrical bodies in a vertical position.
Device according to one of the preceding claims, characterized in that, in the case of pipe bends, different radii can be set continuously between R=120 mm to R=∞ as a function of the inside diameter.
Device according to one of the preceding claims, characterized in that the “variocore” (12) is designed in such a way that different diameters can be set continuously within a range of 10% around the nominal diameter.
Device according to one of the preceding claims, characterized in that a fixed internal pressure is assigned a specific outside diameter of the “variocore” (12).
Device according to one of the preceding claims, characterized in that the “variocore” (12) can be used again.
Method for producing an inner coating on pipe bends, pipes or the like according to one of the preceding claims, characterized in that the variable core closed at one end is drawn through pipes, pipe bends or the like via spreaders, is fixed coaxially at the charging end via means and has applied to it from the other side, by means of air or water, a pressure corresponding to a predetermined inside diameter.
Dependencies are inferred from the claim text.