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  contains putsa the design complexity and large size.Closest to the invention, the technical solution is gas-tight coupling  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.
FIELD: repairs of communication line cables laid in soils of all kinds in cable conduits, manifolds, and tunnels.
SUBSTANCE: proposed method includes installation of split lead bushing on aluminum sheath of each cable followed by shifting both bushings along cables away from spliced joint of cable conductors, running exposed sections of aluminum sheath over with tin, fitting bushings back in place, and soldering them to tinned sections of aluminum sheath; at the same time longitudinal seam on bushings is soldered, ends of bushings are sealed by thermosetting tape, junction box is installed above spliced joint, and its butt-ends are soldered to bushings. In order to repair outer shielding hose, junction box and adjacent cable sections are covered with sealing compound and moist-cured bandage.
EFFECT: improved repair quality, enhanced service life of junction box due to elimination of electrochemical corrosion.
3 cl, 1 dwg
FIELD: flexible coatings and method for cable splice sealing.
SUBSTANCE: flexible coating for sealing cable splice without external heating has gel layer and supporting layer; its flexibility is sufficient to enable manually making gathers around cable-to-splice transition sections of smaller size in case there is gel at this transition for packing resulting seal. Supporting layer preferably made of low-density polyethylene ensures mechanical strength and facilitates coating procedure. Evaporation preventing layer preferably made of aluminum may be applied to supporting layer. Protective layer may be applied to evaporation preventing layer. Adhesion reducing material may be used at least on one end of gel layer facing supporting layer to provide for regulating coating placed on cable splicing sections. Flexible or rubber band may be wound on applied coating for gel compression.
EFFECT: provision for reusing seal obtained; enhanced sealing length.
38 cl, 19 dwg
FIELD: devices for formation of electrical connections in vehicles; the repair kit is designated for repair of a failed electrical device of a vehicle connected to the vehicle electrical equipment system by several wires.
SUBSTANCE: the repair kit has a new electrical device installed instead of the failed one, several wires connected to the new electrical device and a built-up protective box designated for protection of the electrical connection made by joining of the wires of the new electrical device and the wires of the vehicle electrical equipment system. The built-up protective box has a body with several holes insulated from one another. The packing rings positioned in each hole of the body intended for arrangement of the new electrical device section of the connected respective wire of the vehicle electrical equipment system and the respective new electrical device form in fact a waterproof packing around the section of the wires connected to one another by joining. The protective built-up box has also a cover joined to the body. The claimed repair kit is preferably designated for replacement of the sensor of the content of oxygen in exhausted gases failed on the vehicle.
EFFECT: simplified aftersale servicing of the vehicle.
9 cl, 8 dwg
FIELD: electrical engineering.
SUBSTANCE: proposed water-and-gas-tight stuffing box designed for terminating ends of communication cable line, including plastic-sheathed telephone cables with polyethylene insulated conductors, in capacity of 100 to 600 pairs directly in switchgear cabinet on vertically mounted cables which can be or not held at gage pressure and with water-repelling material filled core has shield connector secured on aluminized polyethylene cable sheath in contact with conical surface of through hole at input end of body; plastic cable sheath is filled within stuffing box with cold-cured polyurethane sealing compound; each conductor is covered with plastic insulating layer throughout its entire length.
EFFECT: simplified design, enhanced reliability of cable box.
1 cl, 7 dwg
FIELD: electrical connector and method for connecting coaxial cable lead to terminal.
SUBSTANCE: proposed connector has nut incorporating receiving port for connection to terminal. Nut also has circular clip. Connector also has base member one of whose ends is provided with projection to be inserted through clip hole. Other end of base member incorporates part of inner surface. Connector also has support with flange and body. Support is free to move for compressing external cable conductor and shell with support body and part of inner surface to obtain distal compression. Tightening nut with terminal compresses projection between support flange and circular clip to obtain proximal tightness.
EFFECT: enhanced tightness, reduced manufacturing and maintenance charges.
10 cl, 11 dwg
FIELD: cable connectors for power transfer between power supply and borehole instrument modules of downhole telemetering system in the course of boring.
SUBSTANCE: proposed electrical connector has one or more contact pairs insulated from one another and electrical conductors connected to internal and external opposing contacts of contact pairs. External contacts of contact pairs are made in the form of semi-rings which are installed opposite one another within flexible insert and are free to move toward one another under impact of external pressure. Proposed method for manufacturing this electrical connector includes connection of electrical conductors to contacts, of which external ones are made in the form of semi-rings, integral with auxiliary bushing and wrapped with band made of polymerizing or curing material, such as raw rubber, on top of auxiliary bushing. Wrapping procedure includes filling of cavities followed by placing conductors along blank axis and final wrapping until diameter of blank becomes greater than outer diameter of electrical connector. Blank is fitted between top and bottom cases of mold, compressed at the same time heating it, whereupon auxiliary bushing is completely removed by boring inner diameter of blank until semi-rings are fully separated.
EFFECT: enhanced power capacity, reliability, and service life of power supply.
5 cl, 6 dwg
FIELD: subsurface laying of screened communication cables designed for local communication networks to operate at high frequencies and as "last-mile" cables.
SUBSTANCE: proposed terminator for copper-conductor communication cables designed for use in structured cable systems of categories 5 and 5e (up to 100 MHz and higher) has sleeve-shaped plastic body with round bottom on one end and cylindrical opening on opposite end, spliced conductors of cable ends being spliced which are potted in sealing compound within cable terminator; spliced insulated copper conductors are sealed with aid of type UY-2 connectors accommodating water-repelling filler; spliced conductors are disposed inside reticular screen made in the form of reticular copper sleeve reliably electrically connected to screens of cable ends being spliced in structured cable networks by winding sub-screen tinned copper wires of cable on sleeve and potting core splice of cable screened with reticular copper sleeve in terminator by cold-hardened polyurethane sealing compound VILAD-13.
EFFECT: enlarged functional capabilities of terminator.
1 cl, 6 dwg
SUBSTANCE: concave body is suggested with open outer edge and several parts of perimetre adjacent with open body edge. Elastomeric film is attached to concave body perimetre parts along open concave body edge. Elastomeric film is suited for coupling one or more cables when the cables are located within the body to isolate them from environmental conditions.
EFFECT: invention improves device impermeability and provides possibility of reuse when cable or joint is restored.
10 cl, 5 dwg
SUBSTANCE: product consists of protective core that has, at least, two end sections, many retaining cores and, at least, one cold shrink material that is kept in stretched condition above, at least, part of protective core and, at least, part of each retaining core. One end of each of retaining cores is mated with the corresponding end section of protective core. Retaining cores, protective core and cold shrink material as a whole annularly surround the equipment component so that cold shrink material when shrinking is set on part of equipment component after extracting the end of one of many retaining cores from the corresponding end section of protective core.
EFFECT: sealing or other kind of protection of equipment components such as cables or places of their connection.
15 cl, 31 dwg
SUBSTANCE: sealing device is intended for design of cables intended for underground usage. The pressure-limiting device for cables may contain, for example, the first cable including a conductor and an oil-containing layer encapsulating the conductor and the second cable having a conductor. At the connection spot the first cable conductor may be connected to that of the second cable. The connection spot and the conductors of the first and the second cables may be covered with a pressure-limiting hose. Installed at multiple spots o the pressure-limiting hose may be multiple ties for crimping the pressure-limiting hose round the connection spots and the first and he second cables sections. The pressure-limiting device may be implemented in the form of a hose on a single-strand cable or in the form of a breakout with individual hoses on a multi-strand cable such as a three-strand cable.
EFFECT: oil-containing cables sealing improvement.
20 cl, 12 dwg