Gas-tight coupling and method of its manufacture

 

(57) Abstract:

The inventive coupler includes a metal housing, a portion of the internal space of which is filled with insulating compound. In the thickness of the compound has an insulating disk, through holes which missed conductors sealed in the compound. While sections of the exit of the compound conductors enclosed in the tubular insulation . In the manufacture of couplings place the disc with the guides in the housing. The wires located on the side opposite the disk, pull the tubular insulation and fill the case with compound prior to the immersion length of the tubular insulation in the compound. After curing, the last case turned, pull the wires from the second end of the tubular insulation to lock in the drive and perform additional fill housing compound from the second end. 2 S. p. f-crystals, 1 Il.

The invention relates to the field of communication, namely cable accessories for cables under pressure, and can be used in the manufacture and installation of gas-tight couplings.

Known gas-tight couplings and terminal devices [1] contains putsa the design complexity and large size.

Closest to the invention, the technical solution is gas-tight coupling [2] contains a metal shell, an insulating disk with holes mounted in the housing near one of the ends at a distance from him, insulating compound filling the space inside the housing and hermetically coupled to the housing and the drive from the side, facing the inside of the housing, and conductors hermetically passing through the compound and through the holes beyond both ends of the housing.

A method of manufacturing such a gas-tight coupling is the introduction of conductors in the holes of the disk, the disk with conductors in the metal case, the compound of the space inside the enclosure, bounded on one side by the disk, and the curing of the latter.

This coupling is insufficient dielectric strength. Breakdown occurs mainly between conductors or between the housing and the housing on the surface of the insulating compound or disk. When this breakdown occurs on a dielectric-air (surface breakdown) or by air. When the existing coupling structure to increase its dielectric strength is possible only by increasing the distance between provodnikami mass coupling and reduce its reliability.

The technical result that can be obtained with the implementation of the proposed coupling, is to improve the electrical characteristics, primarily the increased electric strength.

The technical result is achieved due to the fact that in gas-tight sleeve containing a metal shell, an insulating disk with holes mounted in the housing near one of the ends at a distance from him, insulating compound filling the space inside the housing and hermetically coupled to the housing and the drive from the side, facing the inside of the housing, and conductors hermetically passing through the compound and through the holes of the disk beyond both ends of the housing, each conductor of the length of the supplied tubular insulation located on both sides of the coupling of two parts, the first of which is adjacent to the drive side, facing to the first end, and partially immersed in an extra layer of compound, is placed with the said side of the disk, and the second region partially immersed in an insulating compound filling the space inside the metal body.

For manufacturing such a coupling method, which consists in the introduction of conductors in the hole at back is pus, bounded on one side by the disk, and the curing of the latter, before the filling compound at the sites of conductors located on the side opposite the disk, pull the tubular insulation, fill the case with compound prior to the immersion length of the tubular insulation in the compound after curing compound overturn the case, pull the wires from the second end of the tubular insulation to lock in the disk, and then perform the compound into the housing from the second end face.

The drawing shows an example of executing the proposed gas-tight couplings.

The clutch includes a metal housing 1, in which on one side has an insulating disk 2. Disc 2 rests on the ledge 3, formed due to the difference in the diameters of the cylindrical surfaces inside the housing 1. Through the holes of the disk 2 inside the housing 1 are wires 4 extending beyond the ends of the housing. The conductors 4 on both sides of the housing has a tubular insulation 5. Part of the space inside the housing is filled with compound 6, and compound located on both sides of the disk 2. Tubular insulation 5 adjacent to the disk 2 from the side facing the end face. Tubular insulation 5 at length finds the Asti length in the compound allows to provide a labyrinth seal to increase the electric strength.

Made gas-tight coupling as follows.

The conductors 4 is injected into the holes of the disk 2. Pull the tubular insulation 5 on conductors 4 from the first fill at this distance, to fill in the compound were conductors without insulation and part of the length of tubular insulation. Set the disc with the guides in the housing 1 until it stops in step 3. Produce the compound 6 space inside and utverjdayut it. Overturn the case and pull on the conductors 4 of the tubular insulation 5 is fully inserted in the disk 2. Make the fill to the immersion length of the tubular insulation compound and utverjdayut last.

1. Gas-tight sleeve containing a metal shell, an insulating disk with holes mounted in the housing near one of the ends at a distance from him, insulating compound filling the space inside the housing and hermetically coupled to the housing and the drive from the side, facing the inside of the housing, and conductors hermetically passing through the compound and through the holes of the disk beyond both ends of the housing, characterized in that each guide on the length of the supplied tubular insulation located on both sides of the coupling is Yong additional layer of compound, posted with the said side of the disk, and the second region partially immersed in an insulating compound filling the space inside the metal body.

2. A method of manufacturing a gas-tight coupling, which consists in the introduction of conductors in the holes of the disk, the disk with conductors in the metal case, the compound of the space inside the enclosure, bounded on one side by the disk, and the curing of the latter, characterized in that before the filling compound at the sites of conductors located on the side opposite the disk, pull the tubular insulation, fill the case with compound prior to the immersion length of the tubular insulation in the compound after curing compound overturn the case, pull the wires from the second end of the tubular insulation to lock in the drive then perform the compound into the housing from the second end.

 

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