Bending-resistant 16-core steel wire armored total shielding waterproof cable

Abstract

The utility model discloses an anti-bending 16-core steel wire armored type total shielding waterproof cable comprising a polyurethane elastomer core tube, two power supply wire cores, six twisted-pair wire cores, a control wire core and a grounding wire are sleeved in the polyurethane elastomer core tube, and the two power supply wire cores, the six twisted-pair wire cores, the control wire core and the grounding wire are twisted around the outside of the polyurethane elastomer core tube to form a cable core. An aluminum-plastic composite belt longitudinally-wrapped waterproof total shielding layer, a polyvinyl chloride lining layer, a galvanized steel wire armor layer and a polyvinyl chloride outer sheath layer are sequentially wrapped outside the cable core, petroleum jelly is filled in gaps in the polyurethane elastomer core tube and gaps of the cable core, and the outer diameter of the polyvinyl chloride outer sheath layer is 21mm to 25mm. The cable core is round in structure, high in mechanical strength, better in bending resistance and better in moisture-proof and waterproof performance, potential safety hazards are reduced, and durability is improved.

Description

Technical Field

[0001] The present application relates to the field of cable technology, and in particular to a bending-resistant 16-core steel wire armored overall shielded waterproof cable. Background Art

[0002] The wire and cable industry is the second largest industry in China after the automobile industry, with a product variety satisfaction rate and domestic market share exceeding 90%. Globally, China's total output value of wires and cables has made it the world's largest wire and cable producer. With the rapid development of China's wire and cable industry, the overall technical level of the industry has been greatly improved. In the application of multi-core combination cables with power cores, control cores and twisted signal cores, the cable core structure balance and stability are relatively general, the mechanical strength is weak, and it is not resistant to slight impact. It is easy to cause deformation of the cable core structure when subjected to bending and extrusion. The twisted signal core is prone to wire and core breakage, and the replacement frequency is high. In addition, due to the influence of working conditions and the environment, it is more likely to be damp and water ingress, which greatly affects the electrical characteristics of the cable, poses a safety hazard, and the electrical characteristics are unstable, affecting normal operation. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the present application is to provide a bending-resistant 16-core steel wire armored total shielded waterproof cable with a rounded cable core structure, high mechanical strength, better bending resistance, better moisture-proof and waterproof performance, reduced safety hazards and improved durability.

[0004] This application solves the above technical problems through the following technical solutions.

[0005] The invention discloses a bending-resistant 16-core steel wire armored total shielded waterproof cable, comprising a polyurethane elastomer core tube, wherein two power supply cores are sleeved in the polyurethane elastomer core tube, and six twisted cores, a control core and a grounding wire are twisted around the outside of the polyurethane elastomer core tube to form a cable core, wherein the outside of the cable core is sequentially coated with an aluminum-plastic composite tape longitudinally wrapped waterproof total shielding layer, a polyvinyl chloride lining layer, a galvanized steel wire armor layer and a polyvinyl chloride outer sheath layer, and the gaps in the polyurethane elastomer core tube and the cable core are filled with petroleum jelly, the twisted core is composed of two insulated signal cores twisted in pairs, the outer diameter of the power supply core is 80% to 120% of the outer diameter of the insulated signal core, the lay lengths of the six twisted cores are different, the aluminum-plastic composite tape longitudinally wrapped waterproof total shielding layer is an aluminum-plastic composite tape longitudinally overlapped wrapping structure with an overlap rate of not less than 30%, and the outer diameter of the polyvinyl chloride outer sheath layer is 21 mm to 25 mm.

[0006] Preferably, the power cord core comprises a power cord core conductor and a polyvinyl chloride insulation layer.

[0007] Preferably, the power line core conductor is composed of a plurality of tinned copper monofilaments with a diameter of 0.08 mm to 0.16 mm twisted together.

[0008] Preferably, the insulated signal core and the control core both include an inner conductor and a polyvinyl chloride insulation layer.

[0009] Preferably, the inner conductor is composed of a plurality of tinned copper monofilaments with a diameter of 0.04 mm to 0.08 mm twisted together.

[0010] Preferably, the ground wire comprises a solid annealed copper conductor and a polyvinyl chloride insulation layer.

[0011] Preferably, the lay direction of the six twisted pairs of cores is the same as that of the cable core.

[0012] Preferably, the polyurethane elastomer core tube comprises an inner cylindrical body and an outer cylindrical body, and a plurality of connecting plates are evenly distributed radially between the inner cylindrical body and the outer cylindrical body.

[0013] Preferably, the aluminum-plastic composite tape is formed by a composite of an MDPE water-blocking inner layer, an aluminum foil layer and an LDPE water-blocking outer layer, and the thickness ratio of the MDPE water-blocking inner layer to the LDPE water-blocking outer layer is 1:1 to 1:10.

[0014] Preferably, the thickness of the polyvinyl chloride outer sheath layer is 1.6 mm to 1.8 mm.

[0015] Beneficial effects of this application:

[0016] 1. By adding a polyurethane elastomer core tube inside the cable core, the cross-sectional structure of the cable core is ensured to be more balanced and stable, which greatly improves the flexibility and mechanical strength of the cable core, improves the bending resistance, and is not easily deformed when subjected to bending. Each pair of twisted cores is subjected to balanced force, and is not prone to wire and core breakage, which helps to inhibit the occurrence of core crosstalk inside the cable core, ensure stable electrical characteristics, and improve durability.

[0017] 2. The longitudinally wrapped waterproof total shielding layer of the aluminum-plastic composite tape is a longitudinally wrapped structure of the aluminum-plastic composite tape, which has better bending resistance and can provide shielding coverage and prevent water vapor intrusion. The aluminum-plastic composite tape is composed of an MDPE water-blocking inner layer, an aluminum foil layer and an LDPE water-blocking outer layer, and has better water-blocking properties. Petroleum jelly is filled in the gaps in the polyurethane elastomer core tube and the cable core to prevent longitudinal water seepage. It has excellent moisture-proof and waterproof properties, which is beneficial to improving the safety and reliability of the cable, reducing safety hazards and improving durability.

[0018] 3. Adding a galvanized steel wire armor layer provides additional mechanical protection and has a certain resistance to slight impacts. At the same time, it takes into account the flexibility of the cable, making it suitable for installation in narrow spaces, protecting the sheath layer, increasing safety and reliability, and providing better durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0020] Description of reference numerals:

[0021] 1-polyurethane elastomer core tube, 2-power line core, 3-twisted pair core, 4-control line core, 5-grounding wire, 6-aluminum-plastic composite tape longitudinally wrapped waterproof overall shielding layer, 7-polyvinyl chloride lining layer, 8-galvanized steel wire armor layer, 9-polyvinyl chloride outer sheath layer, 10-petroleum jelly, 11-insulated signal line core. DETAILED DESCRIPTION

[0022] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0023] See also Figure 1 The bending-resistant 16-core steel wire armored total shielded waterproof cable of the embodiment of the present application comprises a polyurethane elastomer core tube 1. Furthermore, the polyurethane elastomer core tube 1 comprises an inner cylinder and an outer cylinder, and a plurality of connecting plates are evenly distributed radially between the inner cylinder and the outer cylinder. Two power cord cores 2 are sleeved in the polyurethane elastomer core tube 1. In one embodiment, the power cord core 2 comprises a power cord core conductor and a polyvinyl chloride insulation layer. Furthermore, the power cord core conductor is composed of a plurality of tinned copper monofilaments with a diameter of 0.08 mm to 0.16 mm twisted together. Six twisted pairs of cores 3, a control core 4 and a ground wire 5 are twisted around the outside of the polyurethane elastomer core tube 1 to form a cable core. The twisted pair of cores 3 is composed of two insulated signal cores 11 twisted together. The outer diameter of the power core 2 is 80% to 120% of the outer diameter of the insulated signal core 11. The twist pitches of the six twisted pairs of cores 3 are different, and the twist directions of the six twisted pairs of cores 3 are the same as the twist directions of the cable cores. In one embodiment, the insulated signal core 11 and the control core 4 both include an inner conductor and a polyvinyl chloride insulation layer. Further, the inner conductor is composed of a plurality of tinned copper monofilaments with a diameter of 0.04 mm to 0.08 mm twisted together. In one embodiment, the ground wire 5 includes a solid annealed copper conductor and a polyvinyl chloride insulation layer. The gap inside the polyurethane elastomer core tube 1 and the gap between the cable cores are filled with petroleum jelly 10.

[0024] The cable core is coated with an aluminum-plastic composite tape longitudinally wrapped waterproof total shielding layer 6, a polyvinyl chloride lining layer 7, a galvanized steel wire armor layer 8 and a polyvinyl chloride outer sheath layer 9 in sequence. The aluminum-plastic composite tape longitudinally wrapped waterproof total shielding layer 6 is an aluminum-plastic composite tape longitudinally overlapped wrapped structure with an overlap rate of not less than 30%. Further, the aluminum-plastic composite tape is formed by a composite of an MDPE water-blocking inner layer, an aluminum foil layer and an LDPE water-blocking outer layer, and the thickness ratio of the MDPE water-blocking inner layer to the LDPE water-blocking outer layer is 1:1 to 1:10. The thickness of the polyvinyl chloride outer sheath layer 9 is 1.6 mm to 1.8 mm. The outer diameter of the polyvinyl chloride outer sheath layer 9 is 21 mm to 25 mm.

[0025] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application.

Claims

1. Anti-bending 16-core steel wire armored overall shielded waterproof cable, its characteristics are: The invention comprises a polyurethane elastomer core tube (1), wherein two power supply cores (2) are provided inside the polyurethane elastomer core tube (1), six twisted pair cores (3), a control core (4) and a grounding wire (5) are twisted around the outside of the polyurethane elastomer core tube (1) to form a cable core, wherein the outside of the cable core is sequentially coated with an aluminum-plastic composite tape longitudinally wrapped waterproof overall shielding layer (6), a polyvinyl chloride inner lining layer (7), a galvanized steel wire armor layer (8) and a polyvinyl chloride outer sheath layer (9), wherein the inner space of the polyurethane elastomer core tube (1) is The gaps and the gaps in the cable cores are filled with petroleum jelly (10); the twisted core (3) is composed of two insulated signal cores (11) twisted together; the outer diameter of the power core (2) is 80% to 120% of the outer diameter of the insulated signal core (11); the lay lengths of the six twisted cores (3) are different; the aluminum-plastic composite tape longitudinally wrapped waterproof total shielding layer (6) is an aluminum-plastic composite tape longitudinally overlapped wrapped structure with an overlap rate of not less than 30%; the outer diameter of the polyvinyl chloride outer sheath layer (9) is 21 mm to 25 mm.

2. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 1 is characterized by: The power line core (2) comprises a power line core conductor and a polyvinyl chloride insulation layer.

3. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 2 is characterized by: The power line core conductor is composed of a plurality of tinned copper monofilaments with a diameter of 0.08 mm to 0.16 mm twisted together.

4. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 1 is characterized by: The insulated signal wire core (11) and the control wire core (4) both comprise an inner conductor and a polyvinyl chloride insulation layer.

5. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 4 is characterized by: The inner conductor is formed by twisting a plurality of tinned copper monofilaments with a diameter of 0.04 mm to 0.08 mm.

6. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 1 is characterized by: The grounding wire (5) comprises a solid annealed copper conductor and a polyvinyl chloride insulation layer.

7. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 1 is characterized by: The lay direction of the six twisted wire cores (3) is the same as the lay direction of the cable core.

8. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 1 is characterized by: The polyurethane elastomer core tube (1) comprises an inner cylindrical body and an outer cylindrical body, and a plurality of connecting plates are evenly distributed radially between the inner cylindrical body and the outer cylindrical body.

9. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 1 is characterized by: The aluminum-plastic composite tape is formed by a composite of an MDPE water-blocking inner layer, an aluminum foil layer and an LDPE water-blocking outer layer. The thickness ratio of the MDPE water-blocking inner layer to the LDPE water-blocking outer layer is 1:1 to 1:

10.

10. The bending-resistant 16-core steel wire armored overall shielded waterproof cable according to claim 1 is characterized by: The thickness of the polyvinyl chloride outer sheath layer (9) is 1.6 mm to 1.8 mm.

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