SU1359804A1 - Electric bushing - Google Patents

Abstract

The invention relates to electrical engineering, can be used to introduce electrodes and cables into high pressure vessels. The purpose of the invention is to increase reliability when using wires in an elastic sheath. The device contains a flange. connected to the body of the pressure vessel. The main sealing element is placed in the flange, from a solid sealing compound. At its end there is a protrusion in the form of a truncated cone from the same compound, which covers the walls of the groove of an additional sealing element of an elastic material. As a result of this design, a lateral force arises, acting through the walls of the additional sealing element on the protrusion, which prevents liquid from entering the cup. 1 il. SjO JV CO 00

Description

elastic sheath and basics

The invention relates to electrical engineering and can be used in the design of hermetic lead-in electrodes and cables in high-pressure vessels.

The aim of the invention is to increase reliability.

The drawing shows the input section

The electrode contains a flange 1 attached by bolts 2 to the body 3 of the pressure vessel.

 A sealing lens 4 is placed between the housing 3 and the flange 1. The flame has an aperture 5 for introducing the tokovods 6 into the insulating sealing element 7 of a solid sealing compound that carries the tokovods and is connected to the female flange walls for adhesion.

Outside the flange 1, the element 7 has a protrusion 8, also made of a solid compound in the shape of a truncated cone, from a smaller base of which a bundle of tokovodov 6 comes out.

The protrusions 8 of the element 7 are placed in the groove of the additional element 9 of an elastic compound connected to the protrusion also due to adhesion.

The bottom 10 of the cup, through which the current leads 6 are passed, is made thickened so that the area of the lateral surface of the bottom exceeds the area of its cross section.

The side surface of the truncated cone of the protrusion 8 also exceeds the area of its average cross section.

The excess of the lateral areas is the greater, as the pressure in the vessel increases, and the outcome is determined from the necessary safety margin.

Input works as follows.

The pressure of the fluid in the high-pressure vessel acts on the side walls of the groove of the element 9 of the elastic sealing compound and its bottom

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Due to the fact that the area of the side walls of the bottom 10 is above the area of its cross section, the force developed on the side walls, the greater the face force, the greater the difference in area. The lateral force compresses the bottom and seals the additional sealing element around the elastic shells of the tokovods 6.

Similarly, the lateral force acting through the groove walls of the elastic element 9 on the protrusion 8 exceeds the impact of the end forces and increases the density of the joint in the joint: the groove of the element 9 is the protrusion 8, excluding the ingress of liquid inside the glass.

The electrical input ensures reliable sealing of the joints at high pressures and tokovods with an elastic insulating sheath, eliminates the possibility of short circuits and electric shock.

Claims (1)

Invention Formula Electrical input containing. a housing in the form of a glass with a flange and holes in the bottom for the passage of wires and a sealing element made of solid insulating material located in the glass, characterized in that, with a chain of increased reliability when using wires in an elastic sheath, it is equipped with the main additional sealing element made of elastic insulating material, on the open end of the main sealing element is a protrusion in the form of a truncated cone, and on the end facing towards it add The flax sealing element has a corresponding protrusion, the groove of the wall of which covers the protrusion, while the flange is made in one piece with the glass.