Pipeline Coupling with a Sealing Ring, and Pipeline System for the Delivery of Thick Matter

• US 20080284159A1
• Filed: 10/05/2006
• Published: 11/20/2008
• Est. Priority Date: 11/03/2005
• Status: Abandoned Application

• Current Assignee: Schwing GmbH (XCMG Construction Machinery Company Limited)
• Original Assignee: Schwing GmbH (XCMG Construction Machinery Company Limited)
• Inventors: Krehl, Dietmar
• Application Number:
  US12/092,147
• Publication Number:
  US 20080284159A1
• Time in Patent Office: Days
• US Class Current: 285/112
• CPC Class Codes: F16L 17/04 with longitudinally split or divided sleeve
• CPC Class Codes: F16L 23/22 made exclusively of a material other than metal

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 (11) 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 connecting passage 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 recesses (15) in the distance web (13).

Claims

1-10. -10. (canceled)

11. Pipeline coupling (6) for connecting individual pipeline sections (5, 51, 52) in a pipeline system (4) for the delivery of media under pressure, especially thick matter such as concrete, mortar and the like, wherein the pipeline sections (5, 51, 52) are connected by their end faces to one another by pipe-clamp-like coupling parts and inside a coupling part (8) is arranged a sealing ring (10), which has at least one pressure chamber (12) and at least two spaced-apart sealing surfaces (11), which under the delivery pressure of the medium to be delivered seal by bearing against the outer circumference of the respective pipeline sections (5, 51, 52), and for which purpose, under delivery pressure, at least one permanently effective connecting channel is provided between the inside of the pipeline sections (5, 51, 52) and the pressure chamber (12) of the sealing ring (10), and wherein the sealing ring (10) furthermore has a peripheral, radially inward pointing distance web (13), that extends between the end faces of the pipeline sections (5, 51, 52) connected to each other by the coupling part, characterized in that in the distance web (13) is arranged at least one radially outward extending recess (15), which forms a connecting channel between the inside of the pipeline sections (5, 51, 52) and the pressure chamber (12) of the sealing ring (10), such that the distance web (13) in the region of this recess (15) does not extend into the gap between the end faces of the pipeline sections (5, 51, 52) connected to each other.

12. Pipeline coupling (6) in accordance with claim 11 characterized in that in the distance web (13) of the sealing ring (10) are arranged five recesses (15) distributed about the circumference that form connecting channels between the inside of the pipeline sections (5, 51, 52) and the pressure chamber (12) of the sealing ring (10).

13. Pipeline coupling (6) in accordance with claim 11 characterized in that the recesses (15) in the distance web (13) are formed so as to be semi-circular and continuous, especially tangent-continuous at the transition points.

14. Pipeline coupling (6) in accordance with claim 13 characterized in that the semi-circle openings of the semi-circular recesses (15), seen radially, are on the inside and the semi-circle base, radially seen, are on the outside.

15. Pipeline coupling (6) in accordance with claim 11 characterized in that the recesses (15) have a radial depth of a maximum of 60% of the total height of the distance web (13), preferably a maximum depth of 80% of the total height of the distance web (13).

16. Pipeline coupling (6) in accordance with claim 11 characterized in that the sealing ring (10) is formed as one piece from an elastic, preferably natural-rubber-like material.

17. Pipeline coupling in accordance with claim 11 characterized in that the distance web (13) is arranged centrally in the axial direction of the sealing ring (10).

18. Pipeline coupling (6) in accordance with claim 11 characterized in that the distance web (13) has a different, varying thickness across its circumference and/or is provided with radially extending, preferably groove-like recesses, as a result of which at least one connecting channel is present between the inside of the pipeline sections (5, 51, 52) and the pressure chamber (12) of the sealing ring (10).

19. Pipeline system (4) for the delivery of media under pressure, especially thick matter such as concrete, mortar and the like, comprising several pipeline sections, with the pipeline sections (5, 51, 52) being connected to each other by pipeline couplings (6) characterized in that at least two pipeline sections (5, 51, 52) are connected to each other by a pipeline coupling (6) in accordance with claim 11.