Halogen-free flame-retardant light instrument control cable for offshore platform

Abstract

The utility model discloses a halogen-free flame-retardant light instrument control cable for an offshore platform, which comprises a cable body, the cable body comprises a conductor, an insulating layer, a sub-shielding layer, an isolating layer, a filling layer, a wrapping tape, an armor layer and an outer sheath, and the surface of the cable body is provided with a waterproof jacket shell. The waterproof sleeve shell comprises a first shell body and a second shell body, sealing grooves are formed in the two sides of the inner wall of the first shell body and the two sides of the inner wall of the second shell body, and spring rods are fixedly connected to the inner walls of the sealing grooves. According to the halogen-free flame-retardant light instrument control cable for the offshore platform, the waterproof sleeve shell is arranged at the connecting position of the cable, the sealing rings are arranged between the two ends of the waterproof sleeve shell and the cable, the connecting position is sealed, the waterproof performance is improved, then under the elastic acting force of the spring rods, the sealing performance of the sealing rings can be enhanced, and the service life of the cable is prolonged. The lost elasticity of the sealing ring is continuously compensated, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a halogen-free flame-retardant light-type instrument control cable for an offshore platform. Background Technique

[0002] The ship speed of ships and vessels is an important symbol to measure the level of marine facilities and equipment of various countries. Therefore, reducing the weight of cables and the outer diameter of cables is of great significance for effectively reducing the self-weight of ships and vessels, increasing the effective load, and improving the ship speed.

[0003] At present, most of the cables for offshore platforms produced in China are of general-purpose structures, with relatively large outer diameters and heavy weights, which cannot meet the requirements of lightness and flexibility for the development of ships, vessels, and offshore platforms. Moreover, the joints of the cables usually do not have waterproof structures, resulting in poor waterproof effects when used at sea, easy acceleration of aging, and difficult maintenance. Therefore, a halogen-free flame-retardant light-type instrument control cable for an offshore platform has been developed. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a halogen-free flame-retardant light-type instrument control cable for an offshore platform, which solves the problems that most of the cables for offshore platforms are of general-purpose structures, with relatively large outer diameters and heavy weights, and the joints of the cables usually do not have waterproof structures.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A halogen-free flame-retardant light-type instrument control cable for an offshore platform, including a cable body, the cable body includes a conductor, an insulating layer, a sub-screening layer, an isolation layer, a filling layer, a wrapping tape, an armor layer, and an outer sheath. A waterproof sleeve is arranged on the surface of the cable body. The waterproof sleeve includes a first shell and a second shell. Sealing grooves are opened on both sides of the inner walls of the first shell and the second shell, and a spring rod is fixedly connected to the inner wall of the sealing groove. One end of the spring rod is fixedly connected to an arc-shaped plate, and a sealing ring that closely adheres to the surface of the cable body is fixedly connected to the inner side of the arc-shaped plate.

[0006] Preferably, two sides of the top of the second shell are both fixedly connected with screw rods. The screw rods penetrate through one end outside the first shell and are sleeved with anti-loosening washers. A hand-tightening nut is threadedly connected to the surface of the screw rods and located on the top of the anti-loosening washers.

[0007] Preferably, the conductor is composed of multiple strands of fine tinned soft copper wires stranded together. The insulating layer is extruded outside the conductor, and the sub-screening layer is woven with tinned copper wires on the surface of the insulating layer.

[0008] Preferably, the isolation layer is overlapped and wrapped around the outer part of the sub-screening layer with a polyester film having excellent insulation performance. The filling layer is filled with halogen-free flame-retardant polypropylene tearing ropes into the stranding gaps of the isolation layer, and the isolation layer and the filling layer are stranded into a cable core.

[0009] Preferably, the wrapping tape is wrapped around the outer part of the cable core with two layers of smooth high-density polyester films. The armor layer is braided with tinned copper wires outside the wrapping tape, and the outer sheath is extruded outside the armor layer.

[0010] Preferably, the outer sheath is made of an oil-resistant, tear-resistant, halogen-free, low-smoke, flame-retardant cross-linked polyolefin material, and the insulating layer is made of a low-density, thin-wall type halogen-free cross-linked insulating material.

[0011] Beneficial effects

[0012] The utility model provides a halogen-free flame-retardant light-type instrument control cable for an offshore platform. Compared with the prior art, it has the following beneficial effects:

[0013] (1). For the halogen-free flame-retardant light-type instrument control cable for the offshore platform, a waterproof sleeve is arranged at the connection of the cable, and sealing rings are arranged between the two ends of the waterproof sleeve and the cable to seal the connection, improving the waterproof performance. Then, under the elastic force of the spring rod, the sealing performance of the sealing ring can be enhanced, and the lost elasticity of the sealing ring can be continuously compensated, prolonging its service life.

[0014] (2). For the halogen-free flame-retardant light-type instrument control cable for the offshore platform, a thin-wall cross-linked insulating material with heat resistance, low density, and high performance is adopted. The thickness is 50% smaller than that of ordinary ship cables. The overall cable achieves the purpose of reducing the diameter and weight. The sub-screening is braided with high-density tinned copper wires. Compared with the traditional copper tape screening, it avoids the problems that the copper tape screening generates oxidation due to the contact surface and the contact resistance increases when bending, getting hot and cold, and deforming, which limits the short-circuit capacity. Moreover, the tinned copper wire screening structure product has good bending performance and tensile resistance, and the tinned copper wire can effectively prevent the copper wire from oxidation and corrosion. The copper wire braided screening has better anti-interference performance. Description of the drawings

[0015] Figure 1 is a schematic diagram of the structure of the utility model;

[0016] Figure 2 is a cross-sectional view of the cable body structure of the utility model;

[0017] Figure 3 is of the utility model Figure 1 a partial enlarged view of part A in;

[0018] Figure 4 is a cross-sectional view of the waterproof sleeve structure of the utility model;

[0019] Figure 5 For the present utility model Figure 4 is a partial enlarged view of part B in the present utility model.

[0020] In the figure: 1. Cable body; 101. Conductor; 102. Insulation layer; 103. Sub-screening layer; 104. Isolation layer; 105. Filling layer; 106. Wrapping tape; 107. Armor layer; 108. Outer sheath; 2. Waterproof housing; 21. First housing; 22. Second housing; 3. Sealing groove; 4. Spring rod; 5. Arc-shaped plate; 6. Sealing ring; 7. Screw; 8. Lock washer; 9. Hand-tightening nut. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figures 1 to 5 As shown in the figure, the present utility model provides a halogen-free flame-retardant light-type instrument control cable for an offshore platform, which includes a cable body 1. The cable body 1 includes a conductor 101, an insulation layer 102, a sub-screening layer 103, an isolation layer 104, a filling layer 105, a wrapping tape 106, an armor layer 107 and an outer sheath 108. A waterproof housing 2 is provided on the surface of the cable body 1. The waterproof housing 2 includes a first housing 21 and a second housing 22. Sealing grooves 3 are opened on both sides of the inner walls of the first housing 21 and the second housing 22, and a spring rod 4 is fixedly connected to the inner wall of the sealing groove 3. One end of the spring rod 4 is fixedly connected to an arc-shaped plate 5, and a sealing ring 6 that is in close contact with the surface of the cable body 1 is fixedly connected to the inner side of the arc-shaped plate 5. The sealing ring 6 is made of rubber material;

[0024] Screw rods 7 are fixedly connected to both sides of the top of the second housing 22. A lock washer 8 is sleeved on the end of the screw rod 7 that penetrates to the outside of the first housing 21. A hand-tightening nut 9 is threadedly connected to the surface of the screw rod 7 and located on the top of the lock washer 8.

[0025] With the above structure, during use, the first housing 21 and the second housing 22 are combined and wrapped around the connection of the cable. After the screw 7 on the second housing 22 passes through the first housing 21, the lock washer 8 and the hand-tightening nut 9 are successively assembled on the screw 7 to fixedly install the first housing 21 and the second housing 22, so that the sealing rings 6 on both sides seal the connection, improving the waterproof performance. When the two housings are installed, the sealing ring 6 presses the spring rod 4, and under the reaction force of the spring rod 4, the sealing ring 6 is driven to fit more closely to the cable body 1, improving the sealing performance. And under the elastic action of the spring rod 4, the lost elasticity of the sealing ring 6 can be continuously compensated, extending its service life.

[0026] Embodiment 2

[0027] Based on Embodiment 1, please refer to Figure 1 and Figure 2 As shown, the conductor 101 is made of multiple strands of fine tinned soft copper wires stranded together. The insulating layer 102 is extruded outside the conductor 101. The partial shielding layer 103 is made of tinned copper wires woven on the surface of the insulating layer 102. The isolation layer 104 is made of polyester film with excellent insulation performance and overlapped around the outside of the partial shielding layer 103. The filling layer 105 is made of halogen-free flame-retardant polypropylene tearing ropes filled into the stranding gap of the isolation layer 104. The isolation layer 104 and the filling layer 105 are stranded into a cable core. The wrapping tape 106 is made of two layers of smooth high-density polyester film wrapped around the outside of the cable core. The armor layer 107 is made of tinned copper wires woven outside the wrapping tape 106. The outer sheath 108 is extruded outside the armor layer 107. The outer sheath 108 is made of oil-resistant, tear-resistant, halogen-free, low-smoke, flame-retardant cross-linked polyolefin material, with good oil resistance, tear resistance, wear resistance, flame retardancy, halogen-free, low smoke, flame retardancy, safety and environmental protection. The insulating layer 102 is made of low-density thin-wall halogen-free cross-linked insulating material, with excellent electrical properties, large insulation resistance, high temperature resistance, high tensile strength, large elongation at break, and stable performance after aging, and long service life.

[0028] With the above structure, the cable body 1 adopts a thin-wall cross-linked insulating material with high temperature resistance, low density and high performance. Its thickness is 50% smaller than that of ordinary ship cables, and the overall cable achieves the purpose of reducing diameter and weight. The partial shielding layer 103 is made of high-density tinned copper wires woven, with excellent anti-electromagnetic interference performance, corrosion resistance, and good flexibility. The bending radius of the cable is small, making it more convenient for laying and installation. The armor layer 107 is made of high-density tinned copper wires woven, which can not only bear the mechanical protection function, withstand a certain longitudinal breaking force, but also prevent electromagnetic interference and play a role in safety protection.

[0029] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited. Conventional equipment suitable for the device can be used.

[0030] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A halogen-free flame-retardant lightweight instrument control cable for an offshore platform, comprising a cable body (1), characterized in that: The cable body (1) comprises a conductor (101), an insulating layer (102), a shielding layer (103), an isolation layer (104), a filling layer (105), a wrapping tape (106), an armor layer (107) and an outer sheath (108); a waterproof casing (2) is arranged on the surface of the cable body (1); the waterproof casing (2) comprises a first casing (21) and a second casing (22); sealing grooves (3) are provided on both sides of the inner walls of the first casing (21) and the second casing (22); a spring rod (4) is fixedly connected to the inner wall of the sealing groove (3); an arc plate (5) is fixedly connected to one end of the spring rod (4); and a sealing ring (6) in close contact with the surface of the cable body (1) is fixedly connected to the inner side of the arc plate (5).

2. The halogen-free flame-retardant light instrument control cable for offshore platforms according to claim 1, characterized in that: Screw rods (7) are fixedly connected to both sides of the top of the second shell (22); one end of the screw rod (7) that passes through the outside of the first shell (21) is sleeved with an anti-loosening gasket (8); a hand-tightening nut (9) is threadedly connected to the surface of the screw rod (7) and located at the top of the anti-loosening gasket (8).

3. The halogen-free flame-retardant light instrument control cable for offshore platforms according to claim 1, characterized in that: The conductor (101) is formed by twisting a plurality of fine tinned soft copper wires, the insulating layer (102) is extruded and wrapped outside the conductor (101), and the sub-shielding layer (103) is formed by weaving tinned copper wires on the surface of the insulating layer (102).

4. The halogen-free flame-retardant light instrument control cable for offshore platforms according to claim 1, characterized in that: The isolation layer (104) is made of a polyester film with excellent insulation performance and is wrapped around the outside of the sub-shielding layer (103) in an overlapping manner. The filling layer (105) is made of a halogen-free flame-retardant polypropylene tear rope and is filled into the twisted gap of the isolation layer (104). The isolation layer (104) and the filling layer (105) are twisted into a cable core.

5. The halogen-free flame-retardant light instrument control cable for offshore platforms according to claim 1, characterized in that: The wrapping tape (106) is made of two layers of smooth high-density polyester film wrapped around the outside of the cable core, the armor layer (107) is made of tinned copper wire woven outside the wrapping tape (106), and the outer sheath (108) is extruded outside the armor layer (107).

6. The halogen-free flame-retardant light instrument control cable for offshore platforms according to claim 1, characterized in that: The outer sheath (108) is made of an oil-resistant, tear-resistant, halogen-free, low-smoke, flame-retardant cross-linked polyolefin material, and the insulating layer (102) is made of a low-density, thin-walled, halogen-free, cross-linked insulating material.

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