RU153929U1 - ALARM AND LOCK CABLE - Google Patents

Abstract

1. A cable for signaling and blocking, including water-blocking material, insulated copper conductive conductors twisted into bundles, twisted into a common core, wrapped with a water-blocking tape, on which a polymer sheath is applied, a belt insulation, including a layer of polymer material and a layer of cable paper, and the cable contains an aluminum sheath and an outer cover, including bitumen material and a protective hose made of polymer, characterized in that said conductive wires are twisted into bundles together with a water block with casing threads, each bundle is wrapped with a water-blocking tape, the bundles are twisted into a core together with additional water-blocking threads to fill the voids between the indicated bundles, the core is wrapped with a tape of polyethylene terephthalate and a tape of water-blocking material, while the outer cover contains a tarred paper tape laid on an aluminum sheath by wrapping with overlap. 2. The cable according to claim 1, characterized in that the protective hose is made of polyethylene. 3. A cable according to claim 1, characterized in that the protective hose is made of PVC compound.

Description

The utility model proposed for patenting relates to cable products.

Cables for signaling and blocking (hereinafter referred to as cables) containing conductive conductors insulated with a polymer material twisted into a core are known (see, for example, RF patent for ПМ No. 109906).

The closest, in our opinion, to the proposed utility model is a cable brand SBPZASHp (prototype), developed by JSC "VNII cable production" (hereinafter - VNIIKP). The device of this cable is disclosed in the "Technical Conditions" TU 16.K71-297-2000, published by VNIIKP. The specified cable contains copper conductive cores (hereinafter referred to as cores) insulated with polyethylene (hereinafter referred to as PE). The veins are twisted into elementary bundles, which are twisted into a common core. The space between the beams inside the core is filled with water blocking material. A PE shell is applied to the core. A belt insulation is applied to the shell, containing a tape of polyethylene terephthalate (hereinafter - PET), and two or three layers of cable paper. An aluminum sheath is applied to the belt insulation to protect against external electromagnetic fields. A bitumen layer and a PET tape are applied to the aluminum shell, onto which a PE protective hose is applied.

The disadvantages of the prototype include insufficient protection of conductive conductors from moisture. In addition, the technology for applying bitumen to an aluminum shell includes a fairly high percentage of manual labor.

The technical task is to increase water resistance, improve cable manufacturing technology.

The technical result is achieved by the fact that in the cable for signaling and blocking, including water-blocking material, copper insulated conductive conductors twisted into bundles that are twisted into a common core, on which a sheath is applied, a belt insulation, including a layer of polymer material and a layer of cable paper, and the cable contains an aluminum sheath and an outer cover, including bitumen material and a protective hose made of polymer, these conductive wires are twisted into bundles together with water-blocking threads, each uchok unlocking wrapped in tape, bundles twisted into the core together with additional water blocking yarns, wherein said outer cover comprises bituminized paper tape, by winding superposed with an overlap.

In the cable, said protective hose may be made of polyethylene. In the cable, the specified protective hose can be made of PVC compound.

The utility model is illustrated in the drawing, which schematically (not to scale) shows a cross section of the proposed cable.

In an example of a specific embodiment, the cable for signaling and blocking contains copper conductive conductors 1, on which polyethylene insulation is applied 2. The conductors 1 are twisted together with water blocking threads 3 into bundles 4. Each bundle 4 is wrapped with water blocking tape 5. Bundles 4 are twisted together with additional water blocking threads 6 into the core 7 so that all the voids between the bundles are filled with water blocking threads. The core 7 is wrapped with a tape 8 made of polyethylene terephthalate (PET) and a water blocking tape 9. A tape 10 made of PE is applied to the tape 9. A control core 11 and a waist insulation are applied to the sheath 10, which includes a PET tape 12 and several cable paper tapes 13 that are applied by winding.

To protect the cable from electromagnetic fields, the core 7 is placed in an aluminum sheath 14. An outer cover is applied to the aluminum sheath 14, including a tarpaulin tape 15 and a protective hose 16. The tape 15 is overlapped. Hose 16 can be made of polyethylene or (at the request of the customer) of polyvinyl chloride (PVC) plastic compound.

A positive technical result is that the twisting of conductive wires together with water-blocking threads into a bundle, and bundles into a core, dramatically increases the water resistance of the cable. The use of pre-made tape from bitumen paper allows you to automate the application of the outer cover by using winding equipment. At the same time, manufacturability increases, labor intensity decreases.

For the manufacture of the proposed cable using standard equipment of the cable industry. The cable production technology provides for drawing and annealing of copper wire for conductive cores on drawing machines, insulation (including waist) using extrusion lines, twisting of cores and water-blocking threads into bundles, bundles into the core, on frame and lamp type torsion machines or SZ-twisting machines, the laying of an aluminum sheath and polymer hoses on extrusion lines, the winding of bitumen paper tape on the corresponding winding line. The option of applying an aluminum shell by longitudinal welding is provided.

According to the scheme described above, an experimental batch of cable products was manufactured at the applicant’s enterprise. Tests of cable samples showed a good result.

Based on the foregoing, a new and industrially applicable cable device for signaling and blocking is proposed for legal protection by a utility model patent.

Claims (3)

1. A cable for signaling and blocking, including water-blocking material, insulated copper conductive conductors twisted into bundles, twisted into a common core, wrapped with a water-blocking tape, on which a polymer sheath is applied, a belt insulation, including a layer of polymer material and a layer of cable paper, and the cable contains an aluminum sheath and an outer cover, including bitumen material and a protective hose made of polymer, characterized in that said conductive wires are twisted into bundles together with a water block with casing threads, each bundle is wrapped with a water-blocking tape, the bundles are twisted into a core together with additional water-blocking threads to fill the voids between the indicated bundles, the core is wrapped with a tape of polyethylene terephthalate and a tape of water-blocking material, while the outer cover contains a tarred paper tape laid on an aluminum sheath by wrapping with overlap. 2. The cable according to claim 1, characterized in that the protective hose is made of polyethylene. 3. The cable according to claim 1, characterized in that the protective hose is made of PVC compound.

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