CN220913946U

CN220913946U - Composite cable special for deep sea oil and gas exploration load bearing

Info

Publication number: CN220913946U
Application number: CN202322487827.7U
Authority: CN
Inventors: 匡松文; 张利军
Original assignee: Hengfei Cable Co ltd
Current assignee: Hengfei Cable Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-05-07
Anticipated expiration: 2033-09-13

Abstract

A special composite cable for deep sea oil and gas exploration load bearing is characterized by comprising a signal wire, a power supply wire, a tensile wire core, a water blocking filling layer, a woven shielding layer and an outer sheath; the filling rope coated with the water-blocking material and the double-sided water-blocking tape are used for double water blocking, the water blocking performance is strong, the signal wire of the conductor with a larger section is used, the long-distance signal transmission capacity of the cable is improved, the tensile wire core made of the Kevlar material is added in the cable core assembly, the cable bearing capacity is strong, the service performance requirement of the cable of the deep sea exploration equipment can be met, and the cable has popularization and application values.

Description

Composite cable special for deep sea oil and gas exploration load bearing

Technical Field

The utility model relates to the technical field of cables, in particular to a special composite cable for deep sea oil and gas exploration load bearing.

Background

At present, due to the requirements of the light weight, the reliability and the working environment of the marine exploration equipment, a composite cable with multiple functions integrated and integrated is generally adopted, the power supply, the communication and the dragging and towing bearing capacity of the equipment are generally required to be met,

At present, the cable application environment of the existing marine exploration equipment is very bad, and three problems need to be solved: firstly, the water blocking performance of the cable sheath is not ideal, so that equipment cables are easy to erode by seawater, and the service life is short; secondly, due to the continuous expansion of the exploration depth and the breadth, the requirement on the long-distance signal transmission performance of the cable is high; thirdly, because the exploration environment is complex, the exploration equipment is heavy in mass, the bearing capacity of the cable is weak, and the cable breakage problem easily occurs when the cable is subjected to large pressure.

Disclosure of Invention

The utility model provides a special composite cable for deep sea oil and gas exploration load bearing, which has the advantages of strong water blocking performance, high long-distance signal transmission efficiency and strong bearing capacity.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

A special composite cable for deep sea oil and gas exploration load bearing is characterized by comprising a signal wire, a power supply wire, a tensile wire core, a water blocking filling layer, a woven shielding layer and an outer sheath; the tensile wire core is arranged on the central axis of the cable and is formed by twisting a plurality of aramid fiber strands according to the required tensile strength;

The four signal wires are twisted into signal cable cores in pairs by taking a tensile wire core as an axial lead, each signal wire comprises two conductors, an insulating layer and a polyester wrapping layer, the conductors are finely twisted into bundles by a plurality of tinned copper wires, the number of the conductors is in accordance with the GB/T3956-2008 class 6 standard, the cross section area is greater than or equal to 4 square, each conductor is externally extruded with the insulating layer, and the insulating layer is made of HDPE insulating material; the polyester belting layer is a layer of polyester belting with the thickness of 0.038mm which is overlapped and wrapped, the overlapping rate is more than or equal to 20%, and the polyester belting layer wraps two conductors which are extruded and wrapped with the insulating layer into a signal wire;

The power supply wire comprises a live wire and a zero wire, the live wire and the zero wire are respectively arranged at two opposite outer sides of the signal cable core to form a cable core assembly with the signal cable core, and the live wire and the zero wire have the same structure as the live wire and the zero wire of the conventional power supply wire and comprise conductor insulation and a sheath, so that the details are not repeated; the water blocking filling layer comprises a filling rope and a water blocking belt, the filling rope is coated with water blocking materials and filled in gaps among the signal wire, the power supply wire and the tensile wire core, the water blocking belt is a double-sided water blocking belt, the double-sided water blocking belt is lapped and wrapped on the cable core assembly, the overlapping rate is more than or equal to 30%, and the cable core assembly is wrapped in a round mode.

The further scheme is as follows: the tinned copper wires with the diameter of 0.15 mm are woven into a net shape with the weaving density of more than or equal to 85%, and are coated outside the flame-retardant coating for shielding signal interference.

The further scheme is as follows: the shielding layer is coated with an outer sheath, the outer sheath is made of PUR polyurethane material, and the thickness of the outer sheath is 1.5-2.0mm, and the outer sheath is used for further fire prevention and flame retardance.

The beneficial effects of the utility model are as follows: the filling rope coated with the water-blocking material and the double-sided water-blocking tape are used for double water blocking, the water blocking performance is strong, the signal wire of the conductor with a larger section is used, the long-distance signal transmission capacity of the cable is improved, the tensile wire core made of the Kevlar material is added in the cable core assembly, the cable bearing capacity is strong, the service performance requirement of the cable of the deep sea exploration equipment can be met, and the cable has popularization and application values.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1, the special composite cable for deep sea oil and gas exploration load bearing comprises a signal wire, a power supply wire, a tensile wire core 1, a water blocking filling layer, a woven shielding layer 2 and an outer sheath 3; the tensile wire core 1 is arranged on the central axis of the cable and is formed by twisting a plurality of aramid fiber strands according to the required tensile strength;

The four signal wires are twisted into signal cable cores in pairs by taking a tensile wire core as an axial lead, each signal wire comprises two conductors 4, an insulating layer 5 and a polyester wrapping layer 6, the conductors 4 are finely twisted into bundles by a plurality of tinned copper wires, the number of the conductors accords with the GB/T3956-2008 class 6 standard, the cross section area is greater than or equal to 4 square, the insulating layers 5 are respectively extruded outside each conductor 4, and the insulating layers 5 are made of HDPE insulating materials; the polyester tape layer 6 is a layer of polyester tape with the thickness of 0.038mm which is overlapped and wrapped, the overlapping rate is more than or equal to 20%, and the polyester tape layer 6 coats two conductors 4 which are extruded with the insulating layer 5 into a signal wire;

The power supply lead comprises a live wire 7 and a zero wire 8, and the live wire 7 and the zero wire 8 are respectively arranged at two opposite outer sides of the signal cable core to form a cable core assembly with the signal cable core;

The water-blocking filling layer comprises a filling rope 9 and a water-blocking tape 10, wherein the filling rope 9 is coated with water-blocking materials, the water-blocking tape is filled in gaps among the signal wire, the power supply wire and the tensile wire core 1, the water-blocking tape 10 is a double-sided water-blocking tape, the double-sided water-blocking tape is overlapped and wrapped on the cable core assembly, the overlapping rate is greater than or equal to 30%, and the cable core assembly is wrapped in a round manner.

The braided shielding layer 2 is formed by braiding tinned copper wires with the diameter of 0.15mm into a net shape with the braiding density of more than or equal to 85%, and is coated outside the water blocking tape 10 of the water blocking filling layer for shielding signal interference.

The braided shielding layer 2 is externally coated with an outer sheath 3, the outer sheath 3 is made of PUR polyurethane material, and the thickness is 1.5-2.0mm, so that the stability of the cable outer sheath is further improved.

Claims

1. A special composite cable for deep sea oil and gas exploration load bearing is characterized by comprising a signal wire, a power supply wire, a tensile wire core, a water blocking filling layer, a woven shielding layer and an outer sheath; the tensile wire core is arranged on the central axis of the cable and is formed by twisting a plurality of aramid fiber strands according to the required tensile strength; the four signal wires are twisted into signal cable cores in pairs by taking a tensile wire core as an axial lead, each signal wire comprises two conductors, an insulating layer and a polyester wrapping layer, the conductors are finely twisted into bundles by a plurality of tinned copper wires, the number of the conductors is in accordance with the GB/T3956-2008 class 6 standard, the cross section area is greater than or equal to 4 square, each conductor is externally extruded with the insulating layer, and the insulating layer is made of HDPE insulating material; the polyester belting layer is a layer of polyester belting with the thickness of 0.038mm which is overlapped and wrapped, the overlapping rate is more than or equal to 20%, and the polyester belting layer wraps two conductors which are extruded and wrapped with the insulating layer into a signal wire; the power supply lead comprises a live wire and a zero wire, and the live wire and the zero wire are respectively arranged at two opposite outer sides of the signal cable core to form a cable core assembly with the signal cable core; the water blocking filling layer comprises a filling rope and a water blocking belt, the filling rope is coated with water blocking materials and filled in gaps among the signal wire, the power supply wire and the tensile wire core, the water blocking belt is a double-sided water blocking belt, the double-sided water blocking belt is lapped and wrapped on the cable core assembly, the overlapping rate is more than or equal to 30%, and the cable core assembly is wrapped in a round mode.

2. The special composite cable for deep sea oil and gas exploration load bearing according to claim 1, wherein the braided shielding layer is a tinned copper wire with the diameter of 0.15 mm, the tinned copper wire is braided into a net shape with the braiding density of more than or equal to 85%, and the tinned copper wire is coated outside the flame-retardant coating.

3. The special composite cable for deep sea oil and gas exploration load bearing according to claim 1 or 2, wherein the shielding layer is externally coated with an outer sheath, the outer sheath is made of PUR polyurethane material, and the thickness is 1.5-2.0mm.