SU1337958A1 - Method of connecting insulated electric conductors - Google Patents

Abstract

This invention relates to electrical engineering and is intended to connect insulated conductors. The invention is superior reliability. Pel is achieved by removing the insulation from the ends of the conductors 1, coating them with a layer of solder with a melting point lower than the melting point of the insulation, and insulating pipes 5 are put on above the solder after heating is turned off, as a result, a tight connection is obtained with twisted and propane veins of 2. 3 Il. (L WITH with with SL 00 FIG. 1

Description

This invention relates to electrical engineering and is intended to connect insulated conductors.

The purpose of the invention is to increase the reliability of the connection of conductors.

Figure 1 schematically shows the conductors before connecting them; Fig. 2 shows connected conductors fixed in a twisting mechanism; Fig. 3 shows a ready-made connection.

The method is performed in a trace manner.

Insulators are removed from conductors 1 to be connected, sleeves 3 made of solder having a melting point below the melting temperature of the insulation, and over sleeves 3, wires 2 and a small section of insulation 4 are put on insulating wires on conductors 2. 5, made of a material of the same composition as insulation

2Q shells were put on a tube made of polyethylene grade 10702-020. The ends of the conductors were attached to the hook of the twisting mechanism and were bred at an angle of 18, heated in the area

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conductors (figure 1). The length of the sleeve 3 should be somewhat longer (by 20%) in 25 of the location of the sleeves within 8-9 seconds from the length LJ of the junction of the conductors (Fig. 3). The length of the insulating tube 5 is chosen such that it enters the insulation of 4 conductors and covers the sleeve 3 with a small margin.

Then the ends of the conductors 1 are fastened together on the hook of the twisting mechanism, and the conductors themselves are moved at an angle of 5. When securing the ends of the conductors, the sleeves 3 are placed at such a distance from the hook of the twisting mechanism that during the twisting process they are in the contact zone of the joint. Thereafter, the preheater is turned on and the insulation of the conductors 1 and the tube 5 is heated to a ductile state. In this case, the solder goes into a liquid state. Upon completion of the heating process, the conductors 1 begin to twist. Under the action of the torque moment, the cores 2 together with the molten solder push the plastic insulation of the tubes 5 and form a contact, covered with solder. The contact, in turn, is covered on all sides by insulating the tubes 5. After the preheating is turned off, the insulation and the graft cool, resulting in

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and twisted to the cliff. As a result, a tight connection of conductors was obtained, in which there was an insulant for the twisting of copper wires under insulation.

The invention provides increased reliability of conductor connection.

Claims (1)

Invention Formula The method of connecting insulated conductors, which consists in the fact that the ends of the conductors are rigidly fastened to each other, separated at an angle, heated to the plasticization temperature of the insulation, and twisted to a break, characterized in that, in order to increase the reliability of the connection, before fastening the ends the conductors are removed from them, covered with a layer of solder with a melting point lower than the melting point of the insulation, and on top of the solder the conductors put on insulating tubes made of conductor insulation material. a tight connection is obtained with twisted and propane veins (Fig. 3). Example. Insulated conductors with a diameter of 0.5 mm and polyethylene insulation of high pressure grade 10702-020 with a melting point of 105-108 C were connected. Insulators of a certain length were removed from the conductors and sleeves made of bismuth-containing tape were put on the conductors (49.5% Bi, 13.1% Sn, 10.1% Cd) with melting point 70 C. Tape thickness 0.1 mm. Inside each of the sleeves was applied a thin layer of flux. The length of the sleeve is 18 mm, which is 20% longer than the length of the connection of the cores required by the standards. Over the top The liner was fitted with a tube made of polyethylene grade 10702-020. The ends of the conductors were attached to the hook of the twisting mechanism and were bred at an angle of 18, heated in the area sleeve locations for 8–9 s sleeve locations for 8–9 s and twisted to the cliff. As a result, a tight connection of conductors was obtained, in which there was an insulant for the twisting of copper wires under insulation. The invention provides increased reliability of conductor connection. Invention Formula The method of connecting insulated conductors, which consists in the fact that the ends of the conductors are rigidly fastened to each other, separated at an angle, heated to the plasticization temperature of the insulation, and twisted to a break, characterized in that, in order to increase the reliability of the connection, the conductors are removed from them, covered with a layer of solder with a melting point lower than the melting point of the insulation, and on top of the solder the conductors put on insulating tubes made of conductor insulation material. 3 2 SrigZ Editor A. Ogar Compiled by E. Nechaev Tehred V. Kadar Order 4137/50 Circulation 617 Subscription  VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader E. Roshko