RU2233399C1 - Pipe line - Google Patents

Abstract

FIELD: pipeline engineering.

SUBSTANCE: pipe line has fiberglass pipes with collars at the ends and expanding coupling. The pipes are provided with additional collars and grooves formed by the faces of the collars. The pipeline is provided with reinforcing unit of the expanding coupling, made of semi-rings or a plastic cover interposed between the faces of the additional collars and the faces of the expanding coupling in the grooves, and locking ring which embraces them.

EFFECT: enhanced reliability.

1 cl, 2 dwg

Description

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

A well-known pipeline containing fiberglass pipes and a sleeve with an adhesive connection between them (O. G. Tsyplakov “Designing products from composite fiber materials”, Leningrad: “Mechanical Engineering”, Leningrad Branch, 1984, p. 137, Fig. 4.16 ( 6.7)).

The disadvantage of this pipeline is the large size of the pipe connection and its low reliability.

The large dimensions of the pipe connection unit are explained by the fact that the reliability of the adhesive connection is guaranteed with a length of at least five pipe diameters.

The reliability of such a pipeline decreases sharply with an increase in its diameter and working pressure.

Another pipeline is known, containing fiberglass pipes with flanges at the ends and a rolling sleeve (see ibid., P. 137, Fig. 4.16 (3,5)).

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

In this pipeline, the dimensions of the pipe connection unit are significantly reduced, the reliability of the pipeline is increased and it can be used with large diameters and operating pressures.

However, the positive result achieved in this pipeline remains insufficient, since a rolling sleeve with a large wall thickness and high stiffness is used to perceive axial loads at large pipe diameters and working pressures, the rolling of which is carried out with considerable effort and increased contact loads on the joined fiberglass pipes, causing their damage and destruction of the pipeline.

The objective of the invention is to increase reliability.

To solve this problem, a pipeline containing fiberglass pipes with flanges at the ends and a rolling sleeve will be improved.

The improvement consists in the fact that the pipes are made with additional flanges and grooves formed by the ends of the flanges, and the pipeline is equipped with a reinforcing unit of a rolling sleeve made in the form of half rings or fiberglass winding located in the grooves between the ends of the additional shoulders and a rolling sleeve, and a circlip covering them.

In an embodiment, the rolling coupling is made with longitudinal slots at the ends.

The implementation of pipes with additional shoulders allows you to use them as an axial stop.

The execution of pipes with grooves formed by the ends of the beads allows placement of the bent ends of the rolling sleeve in them.

The supply of the pipeline with a reinforcing node of the rolling coupling made in the form of half rings or fiberglass winding located in the grooves between the ends of the additional shoulders and the rolling coupling and the retaining ring surrounding them allows reinforcing the bent ends of the rolling coupling and reducing their thickness and rigidity without reducing the bearing capacity, due to what to reduce contact stress and damage to fiberglass pipes in the process of rolling the coupling and thereby increase the reliability of the pipeline.

The implementation of the rolling coupling with longitudinal slots at the ends can further reduce contact stress and damage to fiberglass pipes in the process of rolling the coupling.

Figure 1 shows a General view of the pipeline; figure 2 - rolling clutch with longitudinal slots.

The pipeline contains fiberglass pipes 1 with flanges 2 at the ends and a rolling sleeve 3.

The pipes 1 are made with additional flanges 4 (which allows them to be used as an axial stop) and formed by the ends 5 and 6 of the flanges 2 and 4 with grooves 7 (which allows you to place the bent ends of the rolling sleeve in them), and the pipeline is equipped with a reinforcing node of the rolling sleeve 3, made in the form of half rings 8 or fiberglass winding 9 located in the grooves 7 between the ends 5 of the additional shoulders 4 and the ends 10 of the rolling sleeve 3, and the circlip 11 enclosing them.

Rolling coupling 3 can be made with longitudinal slots 12 at the ends 13.

The seal between the pipes 1 is made by one of the known methods and is not shown in the drawings.

When the pipeline is operating under axial loads, the bent ends 13 tend to straighten, but the reinforcing unit of the rolling sleeve 3 tightens them and prevents straightening due to half rings 8 or fiberglass winding 9, the ends 5 of the additional shoulders 4 and the circlip 11 covering them (due to the fixing of the ends of the rolling sleeve in axial and radial directions).

This embodiment of the pipeline allows to produce a rolling sleeve 3 with less rigid ends 13 and even weakened by longitudinal slots 12, which reduces contact loads and the likelihood of destruction of fiberglass pipes in the process of rolling the sleeve.

The pipeline according to the invention (due to reduced loads on fiberglass pipes and the likelihood of their destruction during the manufacturing process) has increased reliability.

Claims (2)

1. The pipeline containing fiberglass pipes with flanges at the ends and a rolling sleeve, characterized in that the pipes are made with additional flanges and grooves formed by the ends of the flanges, and the pipe is equipped with a reinforcing node of a rolling sleeve made in the form of half rings or fiberglass winding located in the grooves between the ends of the additional flanges and the rolling clutch, and the circlip covering them. 2. The pipeline according to claim 1, characterized in that the rolling sleeve is made with longitudinal slots at the ends.

Images