RU2264579C2 - Pipeline - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: pipeline comprises pipe with collars whose thrust surfaces are in a contact with the thrust surfaces of the collars of the semicylinders secured to the pipeline. The thrust surfaces of the pipe collars and semicylinders are made of spheres whose centers are locates at the middle of the pipe butt.

EFFECT: enhanced reliability.

1 dwg

Description

The invention relates to the field of pipes made of composite materials.

A well-known pipeline of composite materials containing pipes with flanges at the ends and a rolling sleeve - OG Tsyplakov “Designing products from composite fiber materials”, Leningrad “Engineering”, Leningrad branch, 1984, p. 137, Fig. 4.16 (3).

For such a pipeline, the flanges of the pipes were obtained by flanging. The disadvantage of the pipeline is its low reliability at high working pressures and pipe diameters due to the poor force closure of the fibrous material in the flanged flanges.

Another pipeline is known, containing abutting pipes with flanges, the abutting surfaces of which are in contact with the abutting surfaces of the flanges of the half-cylinders mounted on the pipeline, described in patent RU No. 2150633, F 16 L 47/02 on "Device for connecting reinforced plastic pipes".

In terms of its features and the achieved result, this pipeline is closest to the claimed one and adopted as a prototype.

The collars of the pipes and half-cylinders of this pipeline are made conical, and the details of the pipeline are fastened together by a self-hardening adhesive composition, which made it possible to carry out normal power closure of the fibrous material in the collars of the pipes and half-cylinders, and due to the self-hardening adhesive composition to eliminate the relative displacement of the pipeline parts in the joint under certain operating conditions and thereby increasing the reliability of the pipeline.

However, the positive result achieved in this pipeline remains insufficient, since with a significant decrease in the ambient temperature, the adhesive composition shrinks, gaps between the pipeline parts and its movement with deterioration of the working conditions of the parts (in particular, an increase in specific pressures in the collars of pipes and half cylinders) which reduces the reliability of the pipeline.

The objective of the invention is to increase the reliability of the pipeline.

To solve this problem, the pipeline will be improved, containing mating pipes with flanges, the thrust surfaces of which are in contact with the thrust surfaces of the half-cylinder flanges fixed to the pipeline.

This improvement consists in the fact that the thrust surfaces of the pipe collars and half cylinders are made spherical with a center located in the middle of the pipe joint.

The implementation of the thrust surfaces of the collars of pipes and semicylinders spherical with a center located in the middle of the joint of the pipes, allows to increase their contact area with each other under load and, thereby, increase the reliability of the pipeline.

Below with reference to the drawing, a description of the proposed pipeline.

The pipeline contains abutting pipes 1, 2 with flanges 3, 4 and thrust surfaces 5, 6 and half cylinders 7 with flanges 8, 9 with thrust surfaces 10, 11, fixed to the pipeline by pipe 12.

The pipeline is characterized in that the thrust surfaces 5, 6 of the pipes 1, 2 and the thrust surfaces 10, 11 of the half-cylinders 7 are made of spherical radius R of the sphere with a center 13 located in the middle of the joint of the pipes 1 and 2 (thereby increasing the contact area of the thrust surfaces of the pipe collars and half-cylinders during the operation of the pipeline and contact stresses in the beads decrease).

The pipeline can be performed with a self-hardening adhesive (not shown) between pipes 1, 2, half-cylinders 7 and pipe 12 or without it.

The pipeline according to the invention (due to the reduction in its operation of contact stresses on the thrust surfaces of the pipe flanges and half cylinders) has increased reliability.

Claims (1)

A pipeline containing abutting pipes with flanges, the thrust surfaces of which are in contact with the thrust surfaces of the flanges of the half cylinders mounted on the pipeline, characterized in that the thrust surfaces of the flanges of pipes and half cylinders are made spherical with a center located in the middle of the pipe junction.