SU758346A1 - Cap for cable end connection - Google Patents

Description

The invention relates to electrical engineering, in particular to devices for hermetic sealing of the ends of cables for the period of storage, transportation or pneumo-hydro tests of the cable 5 by overpressure.

A device for hermetic sealing of cable ends by

compounding made in the form of a cap with mounting protrusions YUpami located on its inner end, and several flexible legs, protruding axially from the open end [1]. '

The disadvantages of this device 15 are its single use, the duration and complexity of the cable termination. _at

Also known cap for cable termination, having the form of 20 deaf glasses of elastic material {2].

The disadvantage of this cap is its applicability for only one cable size.

The closest to the proposed cap is made in the form of a glass of an elastic material with a convex inner side surface and flexible reinforcing element 2

mi in the form of elastic rods located in the thickness of the walls of the glass at an angle to its longitudinal axis [3].

However, this cap is difficult to manufacture and does not provide a reliable seal.

The purpose of the invention is to simplify the manufacturing technology and improve the reliability of the seal.

This goal is achieved by the fact that in a well-known cap for cable termination, made in the form of a cup of elastic material with a convex inner side surface and flexible reinforcing elements angled to its longitudinal axis, the cup is cylindrical in shape with protrusions on the outer surface forming the specified reinforcing elements.

In particular cases, the projections can form a continuous one-way or multi-way helix or rings.

Figure 1 shows the proposed

cap, general view; figure 2 - then

however, with protrusions forming a two-way helix; on fig.Z - the same with

3

758346

four

ring ledges; in fig. 4cable, sealed cap.

The cap for cable termination is made of an elastic-elastic material in the form of a deaf cup 1. The inner side surface of a 2 cup is convex, in a particular case it can be a single-cavity hyperboloid of rotation. Outside the glass has a cylindrical shape with protrusions 3, forming a flexible reinforcing elements located at an angle to its longitudinal axis. The projections 3 are made in one piece with the glass 1 and can form a spiral (FIG. 2) or rings (FIG. 3).

For sealing the cable 4, a cap is selected, in which the minimum inner diameter along the neck is smaller than the outer diameter of the cable. In this case, the maximum inner diameter of the cap can be equal to the diameter of the cable or slightly larger or smaller than it, i.e. caps of the same size can be used to seal cables with different outer diameter. With the help of the projections 3 cap is pulled on the cable

4. Due to the convex inner side surface and the elasticity of the material, the walls of the glass are deformed and the inner surface of the cap fits tightly to the outer porhrhnich cable. The protrusions 3 create an additional force of crimping the cable surface with the inner surface of the cap, ensuring reliable sealing of the cable end. Due to the convex surface of the cap, maximum radial forces of compression of the sheath of the cable are concentrated in the area of the neck of the cap. The deformation of the cap material at its ends is minimal, which eliminates the formation of gaps, cracks, increases the durability of the cap and reliability of the cable sealing. The cap can be used repeatedly. Cap construction is technological.

Claims (4)

Claim 1. A cap for cable termination, made in the form of a cup from an elastic material with a convex inner side surface and flexible reinforcing elements arranged at an angle to its longitudinal axis, characterized in that, in order to simplify manufacturing technology and improve reliability sealing, the glass is made cylindrical with protrusions on the outer surface, forming the specified reinforcing elements. 2. Cap. On π.1, characterized in that the protrusions form a continuous spiral. 3. A cap pop.2, differing in the fact that the spiral is made multiple. 4. The cap on π.1, about tl and tsuyasya the fact that the protrusions are made annular.