Waterproof anti-dragging flexible cable

Abstract

The utility model discloses a waterproof anti-dragging flexible cable, which belongs to the technical field of cables and comprises a body assembly, a conductor shielding layer is arranged on the outer layer of the conductor assembly, an insulating layer is arranged on the outer layer of the conductor shielding layer, and an insulation shielding assembly is arranged on the outer layer of the insulating layer. The conductor assemblies, the conductor shielding layers, the insulating layers and the insulation shielding assemblies jointly form main wire cores, water-blocking cable paste is arranged on the outer layers of the main wire cores, and a plurality of main wire cores are arranged; one side of the main wire core is provided with a plurality of ground wire cores, and the other side of the main wire core is provided with a monitoring wire core; a wrapping tape layer is arranged on the outer side of the main wire core, the main wire core, the ground wire core and the monitoring wire core are wrapped by the wrapping tape layer, and a water blocking structure is arranged on the outer layer of the wrapping tape layer. The cable is good in wear resistance, tensile resistance and torsion resistance, stable in use, long in service cycle, waterproof and high in cost performance.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, specifically relating to a waterproof and drag-resistant flexible cable. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Due to their large size, high power, and high flexibility, electric shovels, the main equipment in open-pit mines, typically require high voltage and high current to transmit higher power. Therefore, their power supply cables usually use flexible medium-voltage drag cables. For a long time, the environment in open-pit metal mines has generally been harsh. Cables are usually subjected to high-intensity dragging, torsion, exposure to sunlight, and crushing during loading and unloading. They are also constantly immersed in acidic and alkaline water environments. These conditions place high demands on the cables. Ordinary mining cables cannot withstand such high-intensity operating environments. They often experience short circuits after repeated crushing, become unusable due to water ingress after long-term immersion in water, and suffer sheath damage after intense friction with ground rocks. These problems result in a short service life, making them unsuitable for the long-term high-load operation of electric shovels.

[0004] Therefore, medium-voltage cables used in mining for towing must possess excellent waterproof, abrasion-resistant, and tensile strength properties to ensure stable and long-term service; otherwise, their internal conductors and external protective layers are prone to fatigue. Currently, the molding of tensile and abrasion-resistant cables mainly involves setting saddle-shaped filling pads inside the cable core and using a composite reinforced sheath structure to enhance the cable's tensile and abrasion resistance characteristics. However, with medium-voltage electric forklifts replacing traditional hydraulic forklifts, not only are there higher and more reliable requirements for the tensile and abrasion resistance properties of towing cables, but also for waterproof performance. Traditional towing cables have a service life of no more than 6 months, requiring frequent maintenance and replacement at excessively high costs, necessitating products with a better cost-performance ratio. Utility Model Content

[0005] To address the aforementioned issues, this utility model provides a waterproof, drag-resistant flexible cable with excellent wear resistance, tensile and torsional strength, stable operation, long service life, waterproof properties, and high cost-effectiveness.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A waterproof, drag-resistant flexible cable includes a conductor assembly, an outer conductor shielding layer, an outer insulation layer, and an outer insulation shielding assembly.

[0008] The conductor assembly, conductor shielding layer, insulation layer, and insulation shielding assembly together constitute the main conductor core. The outer layer of the main conductor core is coated with water-blocking cable grease, and several main conductor cores are provided. A ground conductor core is provided on one side of the main conductor core, and several ground conductor cores are provided. A monitoring conductor core is provided on the other side of the main conductor core. A wrapping layer is provided on the outside of the main conductor core, which covers the main conductor core, ground conductor core, and monitoring conductor core. The outer layer of the wrapping layer is provided with a water-blocking structure.

[0009] Furthermore, fiber filaments are provided on the inner side of the main wire core, and a semi-conductive shielding layer is provided on the outer layer of the fiber filaments. The semi-conductive shielding layer and the insulation shielding assembly of the main wire core are closely attached.

[0010] Furthermore, the ground wire core includes a ground conductor and a ground semiconductor layer, and a ground semiconducting layer is disposed on the outer layer of the ground conductor. The ground semiconducting layer is in close contact with the main wire core and the wrapping layer.

[0011] Furthermore, the monitoring core includes a monitoring core conductor, a monitoring core insulation layer, a reinforcing layer, a braided shielding layer, and a double-layer polyester tape, with the monitoring core insulation layer disposed on the outer layer of the monitoring core conductor.

[0012] Furthermore, a reinforcing layer is provided on the outer layer of the monitoring wire core insulation layer, a braided shielding layer is provided on the outer layer of the reinforcing layer, and a double-layer polyester tape is provided on the outer layer of the braided shielding layer.

[0013] Furthermore, the outer layer of the strap layer is provided with an inner sheath layer, and the outer layer of the inner sheath layer is provided with a fiber braided reinforcement layer.

[0014] Furthermore, an outer sheath layer is provided on the outer layer of the fiber braided reinforcement layer, and the surfaces of the wrapping layer, inner sheath layer, fiber braided reinforcement layer and outer sheath layer are in close contact.

[0015] Furthermore, the insulating shielding assembly includes a semi-conductive shielding layer, a semi-conductive nylon tape, and a first braided shielding layer, with the outer layer of the semi-conductive shielding layer being provided with a semi-conductive nylon tape.

[0016] Furthermore, the outer layer of the semi-conductive nylon bag is provided with a first woven shielding layer, which is woven from a combination of copper wire and polyester filament, and the surfaces of the semi-conductive shielding layer, the semi-conductive nylon tape, and the first woven shielding layer are in close contact.

[0017] Furthermore, the conductor assembly includes an organic fiber rope and conductor strands, with a plurality of conductor strands spaced apart around the periphery of the organic fiber rope, and the surfaces of the conductor strands and the organic fiber rope being in close contact.

[0018] Compared with the prior art, the advantages and positive effects of this utility model are:

[0019] This utility model addresses the technical requirements of waterproof, drag-resistant flexible cables for mining applications regarding tensile, torsional, abrasion-resistant, and waterproof performance. It develops conductor strands and conductor assemblies with excellent tensile and torsional resistance, a composite structure of water-blocking aluminum and plastic films, and a composite structure of inner and outer sheaths and braided reinforcement. The resulting cable exhibits good conductivity and insulation protection, as well as excellent tensile, torsional, abrasion-resistant, and waterproof performance, effectively meeting the technical requirements of mining electric shovel loader cables.

[0020] The main core of this invention is provided with a water-blocking cable paste on its outer layer, and a water-blocking structure is provided on the outer layer of the wrapping layer. The water-blocking structure is composed of a layer of aluminum-plastic composite tape and a polyurethane elastomer sheath, which achieves waterproofing and prevents water from entering the cable and affecting its use. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0022] Figure 1 This is a structural schematic diagram of the waterproof and drag-resistant flexible cable of this utility model.

[0023] Figure 2 for Figure 1 A schematic diagram of the conductor assembly in the diagram;

[0024] Figure 3 for Figure 1 A schematic diagram of the insulation and shielding assembly in the middle;

[0025] In the diagram: 1—Conductor assembly; 101—Organic fiber rope; 102—Conductor strand;

[0026] 2—Conductor shielding layer; 3—Insulation layer;

[0027] 4—Insulating shielding assembly; 401—Semi-conductive shielding; 402—Semi-conductive nylon tape; 403—Braided shielding layer;

[0028] 5—Wrapping layer; 6—Ground conductor; 7—Ground semiconducting layer; 8—Monitoring wire conductor; 9—Monitoring wire insulation layer; 10—Fiber filament; 11—Semiconducting shielding layer; 12—Inner sheath layer; 13—Fiber braided reinforcement layer; 14—Outer sheath layer; 15—Reinforcement layer; 16—First braided shielding layer; 17—Double-layer polyester tape. Detailed Implementation

[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] Example 1:

[0031] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a waterproof and drag-resistant flexible cable, such as... Figure 1 As shown, the conductor assembly 1 is provided with a conductor shielding layer 2 on its outer layer, an insulating layer 3 is provided on its outer layer, and an insulating shielding assembly 4 is provided on its outer layer.

[0032] The conductor assembly 1, conductor shielding layer 2, insulation layer 3, and insulation shielding assembly 4 together form the main conductor core. Water-blocking cable grease is applied to the outer layer of the main conductor core, and several main conductor cores are provided. A ground wire core is provided on one side of the main conductor core, and several ground wire cores are provided. A monitoring wire core is provided on the other side of the main conductor core. A wrapping layer 5 is provided on the outer side of the main conductor core, which covers the main conductor core, ground wire core, and monitoring wire core. A water-blocking structure is provided on the outer layer of the wrapping layer 5.

[0033] The outer layer of the strapping layer 5 is provided with an inner sheath layer 12, and the outer layer of the inner sheath layer 12 is provided with a fiber braided reinforcement layer 13. The outer layer of the fiber braided reinforcement layer 13 is provided with an outer sheath layer 14, and the surfaces of the strapping layer 5, the inner sheath layer 12, the fiber braided reinforcement layer 13 and the outer sheath layer 14 are in close contact.

[0034] The cable core is rationally arranged with a filling layer, an inner sheath layer, a wrapping tape layer 5, a water-blocking layer, a braided reinforcement layer, and an outer sheath layer 14. This structural arrangement provides multi-layered reliable protection for the cable core, thereby improving the overall tensile strength of the cable. The fiber braided reinforcement layer 13 is a copper foil braided structure with high tensile strength. The inner sheath layer and the outer sheath layer 14 are made of chlorinated polyethylene material with a tensile strength of over 20 MPa and a tear strength of over 10.0 N / mm. This technology features high tensile and torsional strength.

[0035] The gaps in the cable core are filled with a non-hygroscopic polypropylene mesh material, which improves the strength of the cable core without affecting its electrical performance.

[0036] The cable core and the outer wrapping tape of the filler are made of semi-conductive nylon tape 402. This technical measure is mainly beneficial to the roundness of the cable core stranding structure, thereby effectively avoiding the serpentine shape of the cable core stranding structure and improving the wear resistance of the cable.

[0037] The cable core is composed of three main wire cores, one ground wire core, one monitoring wire core, and one semi-conductive filler stranded together. Each main wire core consists of a split conductor, wrapping tape, and insulation layer 3. The ground wire core consists of a conductor and insulation layer 3. This technical measure, together with the external filler layer and wrapping tape, forms a stable cable core structure, thereby making the inner sheath layer 12 more tightly extruded and the cable core more robust.

[0038] The main conductor consists of three components: a split conductor, a wrapping tape, and an insulation layer. The conductor is the fifth type of soft copper conductor specified in standard GB / T 3956; the conductor is a multi-strand copper wire stranded structure. The wrapping tape is a semi-conductive nylon tape 402 wrapped structure or a semi-conductive shielding adhesive extruded structure. The insulation is made of chlorinated polyethylene material with a tensile strength of ≥20 MPa and a tear strength of ≥10.0 N / mm.

[0039] The water-blocking structure consists of a layer of aluminum-plastic composite tape and a polyurethane elastomer sheath. The aluminum-plastic composite tape is made by combining aluminum film and plastic film through one or more dry lamination processes to form a functional composite wrapping tape. The aluminum-plastic composite tape is generally composed of three layers: the first is the surface layer, which ensures the tape's strength, puncture resistance, and anti-slip properties within a certain temperature range; the second is the barrier layer, usually made of aluminum foil, which provides moisture protection, light protection, and oxygen barrier properties; the third is the heat-sealing layer, providing good adaptability, penetration resistance, and heat-sealing properties.

[0040] The reinforcing layer is woven from copper foil wires, which are composed of aramid fibers wrapped with copper strips.

[0041] The inner sheath layer and the outer sheath layer 14 are made of chlorinated polyethylene material with a tensile strength of over 20 MPa and a tear strength of over 10.0 N / mm. This technology has the characteristics of high tensile strength and torsional strength.

[0042] Fiber filaments 10 are arranged on the inner side of the main core, and a semi-conductive shielding layer 11 is arranged on the outer layer of the fiber filaments 10. The semi-conductive shielding layer 11 and the insulating shielding assembly 4 of the main core are in close contact. The fiber filaments 10 are aramid filaments or polyester filaments. The semi-conductive layer is an extruded structure of semi-conductive shielding adhesive.

[0043] The ground wire core includes a ground conductor 6 and a ground semiconductor layer. A ground semiconducting layer 7 is disposed on the outer layer of the ground conductor 6, and the ground semiconducting layer 7 is in close contact with the main wire core and the wrapping layer 5. The ground wire core is composed of a conductor and an insulation layer 3. The conductor is the fifth type of soft copper conductor in standard GB / T 3956; the conductor has a multi-strand copper wire stranded structure. The insulation is chlorinated polyethylene material with a tensile strength of ≥20 MPa and a tear strength of ≥10.0 N / mm.

[0044] The monitoring core includes a monitoring core conductor, a monitoring core insulation layer 3, a reinforcing layer 15, a first braided shielding layer 16, and a double-layer polyester tape 17. The monitoring core insulation layer 3 is disposed on the outer layer of the monitoring core conductor. The reinforcing layer 15 is disposed on the outer layer of the monitoring core insulation layer 3, the first braided shielding layer 16 is disposed on the outer layer of the reinforcing layer 15, and the double-layer polyester tape 17 is disposed on the outer layer of the first braided shielding layer 16.

[0045] The reinforcing layer 15 is made of Kevlar fiber and is braided using a braiding machine. A first braided shielding layer 16 is provided outside the reinforcing layer 15, and the first braided shielding layer 16 is made of tin-plated copper wire. A double-layer polyester tape 17 is wrapped around the first braided shielding layer 16. This structural design effectively improves the sliding properties of the monitoring wire core assembly within the cable.

[0046] The insulating shielding assembly 4 includes a semi-conductive shield 401, a semi-conductive nylon tape 402, and a braided shielding layer 403. The semi-conductive shield 401 is covered by the semi-conductive nylon tape 402. The semi-conductive nylon tape 402 is covered by the braided shielding layer 403, which is woven from a combination of copper wire and polyester filament. The surfaces of the semi-conductive shield 401, the semi-conductive nylon tape 402, and the braided shielding layer 403 are in close contact.

[0047] The conductor assembly 1 includes an organic fiber rope 101 and conductor strands 102. Several conductor strands 102 are arranged at intervals around the periphery of the organic fiber rope 101, and the surface of the conductor strands 102 is in close contact with the surface of the organic fiber rope 101.

[0048] The cable core is a basic circular structure consisting of three main wire cores, two ground wire cores, one monitoring wire core, and one semi-conductive filler wire twisted together.

[0049] Specifically, each main conductor core is primarily composed of conductor assembly 1, conductor shield 2, insulation layer, and insulation shield assembly 4. Conductor assembly 1 consists of organic fiber rope 101 and conductor strands 102. The organic fiber rope 101 is formed from 37 strands of aramid fiber with a fiber count of 3000D per strand, and the conductor strands 102 are formed from copper single wire bundles stranded according to standard GB / T 3953. Conductor shield 2, insulation layer 3, and insulation shield 401 are a three-layer co-extrusion structure. Among them, conductor shield 2 and insulation shield 401 are extruded from semi-conductive rubber material, and insulation layer 2 is an extruded structure with medium-voltage ethylene propylene insulation. The copper wire + polyester filament braided shield 403 is a braided structure, with half of the spindles being copper wire and the other half being polyester filament.

[0050] Each ground wire core mainly consists of a ground conductor 6 and a ground semi-conductive layer 7. The ground conductor 6 is the fifth type of soft copper conductor in standard GB / T 3956; the conductor has a multi-strand copper wire stranded structure. The semi-conductive shielding layer is an extruded structure of semi-conductive shielding adhesive.

[0051] The monitoring wire core consists of a monitoring wire conductor 8 and a monitoring wire insulation layer 9. The monitoring wire conductor is the fifth type of soft copper conductor in standard GB / T3956; the conductor has a multi-strand copper wire stranded structure. The insulation layer is an extruded structure with ethylene propylene insulation.

[0052] The central semiconductive filler is composed of fiber filaments 10 and a semiconductive shield 11. The fiber filaments are aramid or polyester filaments, and the semiconductive shield is an extruded structure of semiconductive shielding adhesive.

[0053] The wrapping layer 5 is a dense wrapping structure of a semi-conductive nylon tape.

[0054] The inner sheath layer 12 is an extruded structure of chlorinated polyethylene. The tensile strength of the chlorinated polyethylene reaches 20 MPa or more, and the tear strength reaches 10.0 N / mm or more.

[0055] The fiber braided reinforcing layer 13 is a braided structure of aramid yarn.

[0056] The inner sheath layer 14 is an extruded structure of chlorinated polyethylene. The tensile strength of chlorinated polyethylene reaches 20 MPa or higher, and the tear strength reaches 10.0 N / mm or higher. An extruded structure of neoprene rubber sheath material can also be used.

[0057] Example 2:

[0058] This utility model has a cable core, and the cable core is covered from the inside out with a wrapping layer 5, an inner sheath layer 12, a fiber braided reinforcement layer 13 and an outer sheath layer 14.

[0059] The cable core is a basic circular structure consisting of three main wire cores, two ground wire cores, one monitoring wire core, and one semi-conductive filler wire twisted together.

[0060] Specifically, each main conductor core is primarily composed of conductor assembly 1, conductor shield, insulation layer 3, and insulation shield assembly 4. Conductor assembly 1 consists of organic fiber rope 101 and conductor strands 102. The organic fiber rope 101 is formed from 19 strands of 5000D aramid fiber per strand, and the conductor strands 102 are formed from copper single wire bundles stranded according to standard GB / T 3953. Conductor shield layer 2, insulation layer 3, and insulation shield layer are a three-layer co-extrusion structure. Among them, conductor shield layer 2 and insulation semi-conductive shield 401 are extruded from semi-conductive rubber material, and insulation layer 3 is an extruded structure of medium-voltage ethylene propylene insulation. The copper wire + polyester filament braided shield is a braided structure, with half of the spindles being copper wire and the other half being aramid filament.

[0061] Each ground wire core mainly consists of a ground conductor 6 and a ground semi-conductive layer 7. The ground conductor 6 is the fifth type of soft copper conductor in standard GB / T 3956; the conductor has a multi-strand copper wire stranded structure. The semi-conductive shield 401 is an extruded structure of semi-conductive shielding adhesive.

[0062] The monitoring wire core consists of a monitoring wire conductor 8 and a monitoring wire insulation layer 9. The monitoring wire conductor 8 is the fifth type of soft copper conductor specified in standard GB / T 3956; the conductor has a multi-strand copper wire stranded structure. The insulation layer 3 is an extruded structure with ethylene propylene insulation.

[0063] The central semiconductive filler is composed of fiber filaments 10 and a semiconductive shielding layer 11. The fiber filaments 10 are aramid or polyester filaments, and the semiconductive shielding layer 11 is an extruded structure of semiconductive shielding adhesive.

[0064] The wrapping layer 5 is a dense wrapping structure of a semi-conductive nylon tape 402.

[0065] The inner sheath layer 12 is an extruded structure of chlorinated polyethylene. The tensile strength of the chlorinated polyethylene reaches 20 MPa or more, and the tear strength reaches 10.0 N / mm or more.

[0066] The fiber braided reinforcing layer 13 is a braided structure of aramid yarn.

[0067] The inner sheath layer 12 is an extruded structure of chlorinated polyethylene. The tensile strength of chlorinated polyethylene reaches 20 MPa or higher, and the tear strength reaches 10.0 N / mm or higher. An extruded structure of neoprene rubber sheath material can also be used.

[0068] Example 3:

[0069] This utility model has a cable core, and the cable core is covered from the inside out with a wrapping layer 5, an inner sheath layer 12, a fiber braided reinforcement layer 13 and an outer sheath layer 14.

[0070] The cable core is a basic circular structure consisting of three main wire cores, two ground wire cores, one monitoring wire core, and one semi-conductive filler wire twisted together.

[0071] Specifically, each main conductor core is primarily composed of conductor assembly 1, conductor shield, insulation layer 3, and insulation shield assembly 4. Conductor assembly 1 consists of organic fiber rope 101 and conductor strands 102. The organic fiber rope 101 is formed from 37 strands of aramid fiber with a fiber count of 3000D per strand, and the conductor strands 102 are formed from copper single wire bundles stranded according to standard GB / T 3953. Conductor shield layer 2, insulation layer 3, and insulation shield layer are a three-layer co-extrusion structure. Among them, conductor shield layer 2 and insulation shield layer are extruded from semi-conductive rubber material, and insulation layer 3 is an extruded structure of medium-voltage ethylene propylene insulation. The copper wire + polyester filament braided shield is a braided structure, with half of the spindles being copper wire and the other half being polyester filament.

[0072] Each ground wire core mainly consists of a ground conductor 6 and a ground semi-conductive layer 7. The ground conductor 6 is the fifth type of soft copper conductor in standard GB / T 3956; the conductor has a multi-strand copper wire stranded structure. The semi-conductive shield 401 is a wrapping structure of semi-conductive nylon tape 402.

[0073] The monitoring wire core consists of a monitoring wire conductor 8 and a monitoring wire insulation layer 9. The monitoring wire conductor 8 is the fifth type of soft copper conductor specified in standard GB / T 3956; the conductor has a multi-strand copper wire stranded structure. The insulation layer 3 is an extruded structure with ethylene propylene insulation.

[0074] The central semiconductive filler is composed of fiber filaments 10 and a semiconductive shielding layer 11. The fiber filaments 10 are aramid or polyester filaments, and the semiconductive shielding layer 11 is an extruded structure of semiconductive shielding adhesive.

[0075] The wrapping layer 5 is a dense wrapping structure of non-woven fabric.

[0076] The inner sheath layer 12 is an extruded structure of chlorinated polyethylene. The tensile strength of the chlorinated polyethylene reaches 20 MPa or more, and the tear strength reaches 10.0 N / mm or more.

[0077] The fiber braided reinforcing layer 13 is a polyester filament braided structure.

[0078] The inner sheath layer 12 is an extruded structure of chlorinated polyethylene. The tensile strength of chlorinated polyethylene reaches 20 MPa or higher, and the tear strength reaches 10.0 N / mm or higher. An extruded structure of neoprene rubber sheath material can also be used.

[0079] Example 4:

[0080] This utility model has a cable core, and the cable core is covered from the inside out with a wrapping layer 5, an inner sheath layer 12, a fiber braided reinforcement layer 13 and an outer sheath layer 14.

[0081] The cable core is a basic circular structure consisting of three main wire cores, two ground wire cores, one monitoring wire core, and one semi-conductive filler wire twisted together.

[0082] Specifically, each main conductor core is primarily composed of conductor assembly 1, conductor shield, insulation layer 3, and insulation shield assembly 4. Conductor assembly 1 consists of organic fiber rope 101 and conductor strands 102. The organic fiber rope 101 is formed from 19 strands of 5000D aramid fiber per strand, and the conductor strands 102 are formed from copper single wire bundles stranded according to standard GB / T 3953. Conductor shield layer 2, insulation layer 3, and insulation shield layer are a three-layer co-extrusion structure. Among them, conductor shield layer 2 and insulation semi-conductive shield 401 are extruded from semi-conductive rubber material, and insulation layer 3 is an extruded structure of medium-voltage ethylene propylene insulation. The copper wire + polyester filament braided shield is a braided structure, with half of the spindles being copper wire and the other half being aramid filament.

[0083] Each ground wire core mainly consists of a ground conductor 6 and a ground semi-conductive layer 7. The ground conductor 6 is the fifth type of soft copper conductor in standard GB / T 3956; the conductor has a multi-strand copper wire stranded structure. The semi-conductive shield 401 is a wrapping structure of semi-conductive nylon tape 402.

[0084] The monitoring wire core is composed of a monitoring wire conductor 8, a monitoring wire insulation layer 9, and a ground wire semi-conductive layer 7. The monitoring wire conductor 8 is the fifth type of soft copper conductor in standard GB / T 3956; the conductor has a multi-strand copper wire stranded structure. The insulation layer 3 is an extruded structure with ethylene propylene insulation.

[0085] The central semiconductive filler is composed of fiber filaments 10 and a semiconductive shielding layer 11. The fiber filaments 10 are aramid or polyester filaments, and the semiconductive shielding layer 11 is an extruded structure of semiconductive shielding adhesive.

[0086] The wrapping layer 5 is a two-layer dense wrapping structure of non-woven fabric.

[0087] The inner sheath layer 12 is an extruded structure of chlorinated polyethylene. The tensile strength of the chlorinated polyethylene reaches 20 MPa or more, and the tear strength reaches 10.0 N / mm or more.

[0088] The fiber braided reinforcing layer 13 is a polyester filament braided structure.

[0089] The inner sheath layer 12 is an extruded structure of chlorinated polyethylene. The tensile strength of chlorinated polyethylene reaches 20 MPa or higher, and the tear strength reaches 10.0 N / mm or higher. An extruded structure of neoprene rubber sheath material can also be used.

[0090] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A waterproof, drag-resistant flexible cable, characterized in that, The system includes a conductor assembly, an outer layer of which is provided with a conductor shielding layer, an outer layer of which is provided with an insulating layer, and an outer layer of which is provided with an insulating shielding assembly; The conductor assembly, conductor shielding layer, insulation layer, and insulation shielding assembly together constitute the main conductor core. The outer layer of the main conductor core is coated with water-blocking cable grease, and several main conductor cores are provided. A ground conductor core is provided on one side of the main conductor core, and several ground conductor cores are provided. A monitoring conductor core is provided on the other side of the main conductor core. A wrapping layer is provided on the outside of the main conductor core, which covers the main conductor core, ground conductor core, and monitoring conductor core. The outer layer of the wrapping layer is provided with a water-blocking structure.

2. The waterproof, drag-resistant flexible cable as described in claim 1, characterized in that, The inner side of the main core is provided with fiber filaments, and the outer layer of the fiber filaments is provided with a semi-conductive shielding layer. The semi-conductive shielding layer and the insulation shielding assembly of the main core are closely attached.

3. A waterproof, drag-resistant flexible cable as described in claim 1, characterized in that, The ground wire core includes a ground conductor and a ground semiconductor layer. A ground semiconducting layer is disposed on the outer layer of the ground conductor. The ground semiconducting layer is in close contact with the main wire core and the wrapping layer.

4. A waterproof, drag-resistant flexible cable as described in claim 1, characterized in that, The monitoring core includes a monitoring core conductor, a monitoring core insulation layer, a reinforcing layer, a braided shielding layer, and a double-layer polyester tape. The monitoring core conductor is provided with a monitoring core insulation layer on its outer layer.

5. A waterproof, drag-resistant flexible cable as described in claim 4, characterized in that, The outer layer of the monitoring wire core insulation layer is provided with a reinforcing layer, the outer layer of the reinforcing layer is provided with a braided shielding layer, and the outer layer of the braided shielding layer is provided with a double layer of polyester tape.

6. A waterproof, drag-resistant flexible cable as described in claim 1, characterized in that, The outer layer of the strap layer is provided with an inner sheath layer, and the outer layer of the inner sheath layer is provided with a fiber braided reinforcement layer.

7. A waterproof, drag-resistant flexible cable as described in claim 6, characterized in that, The outer layer of the fiber braided reinforcement layer is provided with an outer sheath layer, and the surfaces of the wrapping layer, inner sheath layer, fiber braided reinforcement layer and outer sheath layer are in close contact.

8. A waterproof, drag-resistant flexible cable as described in claim 1, characterized in that, The insulating shielding assembly includes a semi-conductive shielding layer, a semi-conductive nylon tape, and a first braided shielding layer, with the outer layer of the semi-conductive shielding layer being provided with a semi-conductive nylon tape.

9. A waterproof, drag-resistant flexible cable as described in claim 8, characterized in that, The outer layer of the semi-conductive nylon bag is provided with a first woven shielding layer, which is woven from a combination of copper wire and polyester filament. The surfaces of the semi-conductive shielding layer, the semi-conductive nylon tape, and the first woven shielding layer are in close contact.

10. A waterproof, drag-resistant flexible cable as described in claim 1, characterized in that, The conductor assembly includes an organic fiber rope and conductor strands, with a plurality of conductor strands spaced apart around the periphery of the organic fiber rope, and the surfaces of the conductor strands and the organic fiber rope being in close contact.

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