Pipeline coupling with a sealing ring, and pipeline system for the delivery of thick matter

Abstract

Pipeline coupling (6) for connecting individual pipeline sections (51, 52), and pipeline system, wherein individual pipeline sections (51, 52) are clamped together at their end faces by pipe-clamp-like split couplings, and a sealing ring (10) is arranged inside the split coupling part (8), said sealing ring (10) having at least one pressure chamber (12) and at least two spaced-apart sealing surfaces (1 1) which, under the delivery pressure of the medium to be delivered, bear in a sealing manner against the outer circumference of the respective pipeline sections (51, 52), and wherein the sealing ring (10) furthermore has an encircling distance web (13) which points radially inwards and extends between the end faces of the clamped pipeline sections (51, 52),; wherein at least one connectingpassage which is permanently effective under delivery pressure is provided in the pipeline coupling (6) between the interior of the pipeline system and the pressure chamber (12) in the sealing ring (10), preferably by apertures (15) in the distance web (13).

Description

technical field [0001] The invention relates to a pipe joint for the pressurized delivery of thick substances according to claim 1 for connecting individual pipe sections into a pipeline system and to a pipeline system according to claim 10 for the pressurized delivery of thick substances. Background technique [0002] During the transportation of thick substances such as concrete, mortar, etc., the so-called conveying system is used to overcome the height difference, and the thick substance is transported to the required delivery location through the pressure pipe or pipeline system. The delivery pressure or delivery volume flow is generated by the thick substance pump. Pumps of this kind, especially concrete pumps, usually have two reciprocating delivery cylinders, which alternately draw concrete from a reservoir via a reciprocating delivery piston, which is then forced into the piping system. This provides fluid delivery under pulsating delivery pressure. A common desig...

AI Technical Summary

Problems solved by technology

[0008] However, the introduction of a spacer web between the end faces of the individual pipe sections creates a problem: it is compressed radially outwards at the delivery pressure of the delivery volume flow, expands at this point, and can seal the gap between the end faces of the pipe sections

If the conveyed thick material seeps into a gap, for example, so that the spacer web sections are pressed radially outward from the gap or damaged by the relative movement of the pipe sections, the bearing pressure of the sealing lip may be too high. Low, resulting in thick material coming out of the pipe joints

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