Connecting system for conduits, fittings or assemblies

Abstract

The invention relates to a connecting system for conduits, fittings or assemblies, which are intended for guiding a fluid under a pressure (p1) that is higher than a comparison pressure (p2). The system comprises a first and a second coupling part (1, 2) as well as a peripheral seal (3) placed in a groove (4) that is peripherally formed in one of the two coupling parts (1, 2), and comprises a groove bottom (4a) as well as two groove flanks (4b, 4c). When in an operating state inside the groove (4), the seal (3) occupies a position in which it closes a gap (7) of the receiving opening (6) while deforming and generating a radial pre-pressing and rests against the coupling parts (1, 2) over a contact length (KL) extending in an axial direction (X-X). In order to achieve a high functional reliability as well as, when establishing the coupling connection, an increased ease of assembly, while ensuring that only a small amount of the fluid penetrates the seal (3), the invention provides that, inside the groove (4), means (4a, 4d, 4e, 13) are placed for mechanically inhibiting an axial movement of the peripheral seal (3) and are designed in such a manner that the seal (3), when one coupling part (2) is plugged into the other coupling part (1) and also when an opposite back motion occurs, is held in the position in which the seal (3) closes the gap (7) of the receiving opening (6).

Description

technical field [0001] The invention relates to a connection system for pipes, fittings or assemblies intended to conduct fluids at pressures above a comparative pressure, the connection system comprising a first connection part such as a housing part, A second connection part, for example like a plug part, which can be connected to the first connection part, and at least one peripheral seal made of an elastomer and arranged in a groove formed between the two on the periphery of one of the connecting parts, and has a groove bottom and two groove edges, wherein, in the working state, the peripheral seal occupies a position in the groove, wherein the peripheral seal deforms and A pre-compression force is generated to close a gap between the connection parts, wherein, when the connection parts are connected to each other, in the fixed position of the peripheral seal, the peripheral seal closes the receiving opening in the working state. hole gap. Background technique [0002]...

AI Technical Summary

Problems solved by technology

[0005] But there is a problem that, in order to achieve an optimal sealing effect, the high value of the degree of filling of the groove, which is pre-calculated as the radial cross-section of the peripheral seal in the groove pressed against A quotient of the ratio of the cross-sectional area of ​​the groove, these values ​​can even reach one hundred percent, but at the same time on the other hand, DE 20 2004 017 316 U1 states that, taking into account the possible thermal expansion of the peripheral seal, extrusion should be avoided as much as possible. out into the gap to be sealed

Images