RU2367838C1 - Angular reinforced rubber compensator - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: invention relates to angular reinforced rubber compensators for transportable flexible branches at transportation of fluid by pipes. Compensator is implemented in the form of arc on-the-mitre from 0° up to 180° and contains pressurising rubber layer, force frame, external rubber layer. One or several rubberised cord layers of force frame is/are implemented with longitudinal location of fibers (cords) and one or several rubberised cord layers of force frame is located between, or above layers of force frame and is implemented with cross (circumferential) direction of fibers (cords).

EFFECT: design simplification, decreasing of overall dimensions at high flexibility ensured by perfecting of structure of force frame, erection simplification into pipelines, angularly related to each other.

3 cl, 2 dwg

Description

The invention relates to mechanical engineering, in particular to shipbuilding, for flexible flexible pipes intended for use in hydraulic systems for transporting liquid through pipes.

Known angular pipe compensator (patent RU No. 2221188, IPC F16L 51/04, publ. 10.01.2004) containing pipes with flanges, a housing, elastic membranes made in the form of reinforced shells, pressure rings and shaped elbows.

The disadvantages of the known angular pipe compensator are large dimensions and design complexity.

Also known is a reinforced rubber-cord straight-through sleeve (a.s. SU No. 655890, IPC F16L 11/08, publ. 05.04.79) containing an internal sealing rubber layer, a power cage and an outer rubber layer.

The disadvantage of this sleeve is that it cannot be mounted in a corner pipe, namely in the location of the pipes connected by it, which are at an angle from 0 ° to 180 ° to each other, with a small pipe length that is not enough for it to bend without kink, t. e. distortion of the internal section of the sleeve during installation. In addition, the pipeline into which such a pipe with a bend is installed is subject to additional forces arising from the pipe tending to straighten under the influence of its own rigidity and pressure of the working medium.

The technical result of the claimed angular reinforced rubber expansion joint for movable flexible pipes is to eliminate these drawbacks, simplify the design and reduce overall dimensions with great flexibility by improving the structure of the power frame, which allows large shear movements in three planes and reduce stiffness and spacer forces acting on pipeline.

The invention is illustrated by drawings:

figure 1 - angular reinforced rubber compensator;

figure 2 is a longitudinal section of the power frame of the corner reinforced rubber compensator.

An angled reinforced rubber compensator (Fig. 1) for movable flexible pipes, made in the form of an arc at an angle from 0 ° to 180 °, contains (Fig. 2) an internal sealing rubber layer 1, which ensures the tightness of the cavity and the protection of the power frame from the environment, located in the inner cavity of the compensator; one or more layers 2 and 3 of rubberized cord, forming the main (bearing) power frame; outer coating rubber layer 7, which protects the power frame from external damage and weather conditions. The rubberized cord layers 2 and the ends of the yarn of the cord layers 3 of the power frame are wrapped around the bead ring 4, which ensures mutual arrangement of the layers and their rigid fastening. The number of rubberized cord layers of the power frame depends on the pressure of the working medium.

The edge of the cord layers 2 of the power frame is secured by an additional bead ring 5 (FIG. 2) formed by winding strips of synthetic cord fabric of the KNTS type (capron) or anide, which have the ability to shrink during vulcanization, and the edge of the cord layers 2 of the power frame is additionally wrapped on the ring 5 The edge of the power layer 3 goes under the bead ring 4, and then the thread of the layer is turned in the longitudinal direction on the bead ring 4 and is wrapped around the bead ring 5.

Corner reinforced rubber compensator for movable flexible pipes works as follows. When a working medium is supplied under pressure into the internal cavity of the compensator, spacer (radial) forces act on the layer (s) of the power frame. The layer or layers of the power cage with the longitudinal arrangement of the threads (cords) receives the spacer axial force of the compensator, and the layer / layers of the power cage located between or above the layers of the power cage with the circumferential direction of the threads (cords) receives the radial forces arising in compensator under internal pressure of the medium.

One or more rubberized cord layers 2 of the power frame (Fig. 2) is made / made with a longitudinal arrangement of threads (cords), for example, of high-modulus fibers of the Rusar type and one rubberized cord layer 3 of the power frame located between or above the layers of the power frame with the longitudinal direction of the threads, made with the transverse (circumferential) direction of the threads (cords).

To ensure the possibility of large shear movements in three planes and achieve the claimed technical result, the reinforced rubber compensator is made angular in the form of an arc at an angle from 0 ° to 180 ° with a different structure of the power frame.

The proposed design allows the manufacture of angular reinforced rubber expansion joints of various diameters with minimum dimensions. The implementation of the reinforced rubber compensator in the form of an arc ensures the preservation of the internal diameter of the compensator during installation in pipelines located at an angle from 0 ° to 180 ° to each other.

Thus, the proposed structure of the power frame increases its flexibility and thereby provides the possibility of large shear movements in three planes when transporting the working medium through pipes, simplifies installation in pipelines at an angle from 0 ° to 180 ° to each other, and also reduces stiffness and spacer forces acting on the pipeline.

During the study, the company developed and manufactured an easy-to-use and reliable in operation design of an angled reinforced rubber expansion joint for flexible flexible pipes.

Claims (3)

1. An angled reinforced rubber compensator for movable flexible pipes, comprising a sealing rubber layer, a power cage, an outer rubber layer, characterized in that the compensator is made in the form of an arc at an angle from 0 to 180 °, one or more rubberized cord layers of the power cage is made / made with a longitudinal arrangement of threads (cords) and one or more rubberized cord layers of the power frame is located between or above the layers of the power frame and is made with the transverse (circumferential) direction of the threads (cords). 2. An angled reinforced rubber compensator for movable flexible pipes according to claim 1, characterized in that the rubberized cord layer / layers of the power carcass with a longitudinal arrangement of filaments (cords) of the cord absorb the spacer axial force of the compensator, and the rubberized cord layer / layers of the power carcass located between or above the layer (s) of the power cage with the circumferential direction of the cord threads (cords), receives the radial forces arising in the compensator under the internal pressure of the working medium. 3. An angled reinforced rubber compensator for movable flexible pipes according to claim 1, characterized in that the rubberized cord layers of the power frame are made of high-modulus fibers of the Rusar type.

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