RU204792U1 - Solid insulated conductor joint - Google Patents

Abstract

The utility model relates to the field of electrical engineering, namely to devices that ensure the transmission of electric current at power plants and substations in normal and emergency modes. The technical problem of the utility model is to increase the dielectric strength of the insulation by creating a hermetically sealed layer of solid insulation in the outer grounded layer of the coupling body along its entire length, capable of withstanding high voltage and external atmospheric influences. The technical result consists in expanding the scope and reducing the radial dimensions of the coupling for medium voltage classes. The conductor joint sleeve with solid insulation contains end fittings of adjacent busduct sections (1), which are interconnected by means of contact plates (2), a ring made of elastic insulating material (3) stretched over the end fittings of adjacent busduct sections (1) and placed in a conical recess solid insulating layer (4) of end fittings (1), and crimp (5), fixed on a ring made of elastic insulating material (3). A ring of elastic insulating material (3) is firmly pressed against the surface of the solid insulating layer (4) of the end piece (1). The ring made of elastic insulating material (3) can be made of EPDM. The solid insulating layer (4) of the ends of the adjacent sections of the conductor (1) can be made of epoxy compounds. All elements are located in the clutch housing. 1 ill.

Description

The proposed utility model relates to the field of electrical engineering, namely to devices that ensure the transmission of electric current at power plants and substations in normal and emergency modes.

Known coupling of conductor sections (RF Patent No. 2439764, IPC H02G 5/08, publ. 01/10/2012), containing a housing, end fittings of conductor sections, contact plates, elements for equalizing the electric field, insulating and conducting layers.

The disadvantages of the known device include insufficient dielectric strength of the insulation inside the coupling housing for use at high rated voltage.

The technical task of the proposed utility model is to increase the dielectric strength of the insulation by creating a sealed layer of solid insulation in the outer grounded layer of the coupling body along its entire length, capable of withstanding high voltage and external atmospheric influences

The technical result consists in expanding the scope and reducing the radial dimensions of the coupling for medium voltage classes.

This is achieved by the fact that the known connection sleeve of a conductor with solid insulation, containing two end fittings of adjacent sections of a conductor, interconnected by means of contact plates and including solid insulating layers of end fittings, is additionally equipped with a ring made of elastic insulating material and a crimp, and the ring and crimp cover the end fittings , and the ends of the end fittings and the ring are made conical.

The essence of the utility model is illustrated by a drawing, which shows a diagram of the proposed device.

The connecting sleeve of the conductor with solid insulation contains end fittings of adjacent sections of the conductor 1, which are interconnected by means of contact plates 2, a ring made of elastic insulating material 3, stretched over the ends of adjacent sections of the conductor 1 and placed in the conical recess of the solid insulating layer 4 of end fittings 1, and crimp 5, fixed on a ring of elastic insulating material 3. The ring of elastic insulating material 3 is tightly pressed against the surface of the solid insulating layer 4 of the end piece 1. The ring of elastic insulating material 3 can be made of ethylene-propylene rubber. The solid insulating layer 4 of the ends of the adjacent sections of the conductor 1 can be made of epoxy compounds. All elements are located in the clutch housing.

The device works as follows.

When voltage is applied, an electric current flows through the contact plates 2 of the clutch, a high potential of the electric field is formed on the contact plates 2 themselves, and an electric field is formed in the insulating gap. The presence of additional solid insulation in the form of a ring made of elastic insulating material 3 increases the dielectric strength of the insulating gap. The solid insulating layer 4 and the elastic insulating layer made in the form of a ring made of elastic insulating material 3 pressed against each other by means of crimping 5 make it possible to exclude electrical breakdown along the interface due to the elimination of the appearance of gas cavities at the specified interface, and the conical shape of the interface is repeated increases the pressure of these insulating layers.

As a result, the combined layer of solid insulation becomes hermetic, the dielectric strength of the insulation inside the sleeve body increases sharply, since a continuous layer of insulation is created near the outer grounded layer of the body with high dielectric strength, and the dielectric strength of the gas section of the insulating gap does not decrease due to the influence of the external atmosphere. since the inner volume of the sleeve becomes sealed.

The use of the utility model makes it possible to increase the dielectric strength of the insulation of the connecting couplings by at least two times, which makes it possible to reduce the radial dimensions of the couplings by 30-50%, as well as to expand the area of their application in conductors with a rated voltage of 6-20 kV to conductors with a rated voltage 6-110 kV.

Claims (1)

A conductor joint sleeve with solid insulation, containing two ends of adjacent sections of the current conductor, interconnected by means of contact plates and including solid insulating layers of the ends, characterized in that it is equipped with a ring of elastic insulating material and a crimp, and the ring and crimp cover the ends, and the ends end fittings and rings are made conical.

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