RU2696611C1 - Method of increasing mechanical strength of polyethylene couplings - Google Patents

Abstract

FIELD: electrical communication engineering.

SUBSTANCE: invention relates to communication networks and can be used in repair and maintenance of cable communication lines. Essence of the invention consists in threading on outer and inner surfaces of half-couplings, connection of half-couplings, winding of the point of connection with polymer coil mesh and subsequent shrinkage of heat-cutting tube on the coupling.

EFFECT: higher efficiency of repair of defective section of cable line and increased mechanical strength of connection point of coupling half-couplings and its housing.

1 cl, 2 dwg

Description

The invention relates to the field of communication networks and can be used in the repair and maintenance of cable communication lines.

Currently, to restore the shells of telephone cables, including cables with hydrophobic filling, direct polyethylene couplings (hereinafter referred to as MPP) and branching polyethylene couplings (hereinafter MCI) are used [1]. The combination of a sharp change in weather conditions, cable stiffness and increase in dynamic stresses in places of turning or twisting of the cable line often leads to a violation of the tightness and destruction of the housing of polyethylene couplings.

There is a method of increasing the mechanical strength of MPP and MCI [2]. After installing the cable into the joint, two half-couplings put mastic, two half-couplings are joined after which the joint is sealed with an insulating tape.

The main disadvantages of this method: at low temperatures, the mastic and the adhesive layer of the insulation tape harden, there is no possibility of applying these materials without the use of additional heating elements and heating devices, in turn, when direct sunlight hits the insulation tape, it begins to dry out and loses its sealing properties .

The objective of the utility model is to increase the repair efficiency of a defective section of a cable line.

The technical result is an increase in the mechanical strength of the junction of the coupling halves of the coupling and its housing.

The problem is solved, and the technical result is achieved by threading on the outer and inner surfaces of the coupling halves, connecting the coupling halves, wrapping the joint with a masonry polymer mesh and then shrinking the heat pipe on the coupling.

A pipe repair sleeve is shown in FIG. 1-2. In FIG. 1 is a side view of two coupling halves; FIG. 2 - a fragment of the coupling node of the coupling halves.

A method of increasing the strength of the coupling is as follows. Two half-couplings 1 and 2 are installed on the cable section 3. A thread 4 is applied to the inner surface of the large half-coupling 1 and the outer surface of the small half-coupling 2 with a die and tap. After the cable is spliced together by twisting movements, both half-couplings are fixed to each other. After fixing the cones of the coupling halves, the junction is wrapped with a masonry polymer mesh. Next, a thermotube is applied over the masonry polymer mesh, which is heated and seated on the coupling body using an industrial hair dryer or blowtorch.

List of sources:

1. Product catalog of CJSC Svyazstroydetal. - 2013 Issue 2 [1].

2. BBK 32.889 Construction of cable communication facilities - Introduction. 1988 - Authors: D.A. Baron, I.I. Grednev.

Claims (1)

A method for increasing the mechanical strength of polyethylene couplings, characterized in that threads are applied to the inner surface of the large half coupling and the outer surface of the small half coupling, the joint is wrapped with a masonry polymer mesh, over which a heat pipe is applied, which is heated and seated on the coupling body.

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