Corrosion-resistant umbilical cable for underwater production system

Abstract

The utility model discloses a corrosion-resistant umbilical cable for an underwater production system, which comprises a cable body and a battery cell, the cable body is arranged on the outer wall of the battery cell, the cable body is provided with a wear-resistant layer, and chlorinated polyethylene materials in the wear-resistant layer have good wear resistance, so that the cable can work in a severe environment, and the service life of the cable is prolonged. The cable body is kept working normally, the surface of the cable body is prevented from being abraded, the cable body is prevented from being damaged, the corrosion resistance of the cable body is improved through the excellent chemical corrosion resistance, high temperature resistance and abrasion resistance of fluoroplastic in the corrosion-resistant layer, the cable body is prevented from being corroded by seawater, and the service life of the cable is prolonged. The waterproof performance of the cable body is improved through the UV resistance, chemical corrosion resistance, electrical insulation performance and biodegradation resistance of the waterproof layer, and the situation that the cable body is prone to corrosion and abrasion in the deep sea environment, consequently, the performance of the cable body is reduced or even fails, and normal operation of an underwater production system is affected is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a corrosion-resistant umbilical cable for an underwater production system. Background Art

[0002] As the development of marine oil and gas resources continues to advance into the deep sea, underwater production systems are facing a more complex and harsh working environment. As a key equipment in underwater production systems, umbilical cables not only need to transmit electricity, signals and data, but also need to provide hydraulic power and chemicals for the equipment. The stability and corrosion resistance of their performance are crucial to the safe operation of the entire system. The existing corrosion-resistant umbilical cables for underwater production systems can basically meet daily use needs, but there are still some shortcomings that need to be improved.

[0003] However, the existing umbilical cable is susceptible to corrosion and wear in the deep sea environment, resulting in performance degradation or even failure, thus affecting the normal operation of the underwater production system. To this end, we propose a corrosion-resistant umbilical cable for underwater production systems to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a corrosion-resistant umbilical cable for an underwater production system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant umbilical cable for an underwater production system, comprising a cable body and a battery core, the cable body being arranged on the outer wall of the battery core, the battery core comprising a plurality of wire cores arranged at equal intervals in the cable body, an insulating layer being arranged on the outer wall of the cable body, a metal shielding layer being arranged on the surface of the insulating layer on the side away from the cable body, a buffer layer being arranged on the outer wall of the metal shielding layer, a waterproof layer being arranged on the surface of the buffer layer on the side away from the metal shielding layer, a corrosion-resistant layer being arranged on the outer wall of the waterproof layer, and a wear-resistant layer being arranged on the surface of the corrosion-resistant layer on the side away from the waterproof layer.

[0006] As a further preferred embodiment of the present technical solution, the insulating layer is composed of a cross-linked polyethylene material, and an antioxidant is added into the insulating layer.

[0007] As a further preferred embodiment of the present technical solution, the metal shielding layer is woven from copper wires or copper tapes, and the main material of the metal shielding layer is copper.

[0008] As a further preferred embodiment of the present technical solution, the buffer layer is composed of a semi-conductive butyl rubber tape material, and the thickness of the buffer layer is equal to the thickness of the metal shielding layer.

[0009] As a further preference of the present technical solution, the waterproof layer is composed of polyethylene material, and the thickness of the waterproof layer is equal to that of the buffer layer.

[0010] As a further preference of the present technical solution, the corrosion-resistant layer is composed of fluoroplastic material, and the thickness of the corrosion-resistant layer is equal to that of the waterproof layer.

[0011] As a further preference of the present technical solution, the wear-resistant layer is composed of chlorinated polyethylene material, and the thickness of the wear-resistant layer is twice that of the waterproof layer.

[0012] The present utility model provides an umbilical cable for a corrosion-resistant underwater production system, having the following beneficial effects:

[0013] 1. By providing a wear-resistant layer on the cable body of the present utility model, and utilizing the good wear resistance of the chlorinated polyethylene material in the wear-resistant layer, it can work in a harsh environment, keep the cable body working normally, prevent the surface of the cable body from being worn, and further prevent the situation of cable body damage. Then, through the excellent chemical corrosion resistance, high temperature resistance and wear resistance of the fluoroplastic in the corrosion-resistant layer, the corrosion resistance of the cable body is improved to prevent the cable body from being corroded by seawater. Next, through the UV resistance, chemical corrosion resistance, electrical insulation performance and anti-biodegradation performance in the waterproof layer, the waterproof performance of the cable body is improved to prevent the cable body from being easily corroded and worn in the deep-sea environment, resulting in a decline or even failure of the cable body performance, thus affecting the normal operation of the underwater production system.

[0014] 2. By providing a buffer layer on the cable body of the present utility model, and utilizing the good buffering performance of the semi-conductive butyl rubber tape in the buffer layer, it can effectively buffer the damage of external impact force to the cable body. Then, through the good electrical conductivity and electromagnetic shielding effect of copper in the metal shielding layer, it can effectively resist the high-voltage electric field inside the cable body and reduce the interference of the electric field to the surrounding environment. Next, through the excellent electrical performance, heat resistance and mechanical performance in the insulating layer, the cable body can be applicable to various deep-sea environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a bottom view structural schematic diagram of the present utility model;

[0017] Figure 3 is a three-dimensional sectional structural schematic diagram of the present utility model;

[0018] Figure 4 is of the present utility model Figure 3 The enlarged structural schematic diagram at position A.

[0019] In the figure: 1. Cable body; 2. Electric core; 3. Insulation layer; 4. Metal shielding layer; 5. Buffer layer; 6. Waterproof layer; 7. Corrosion-resistant layer; 8. Wear-resistant layer. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The present invention provides a technical solution: As Figures 1 to 4 shown, in this embodiment, an umbilical cable for a corrosion-resistant underwater production system includes a cable body 1 and an electric core 2. The cable body 1 is arranged on the outer wall of the electric core 2. The electric core 2 includes a plurality of wire cores arranged at equal intervals in the cable body 1. An insulation layer 3 is arranged on the outer wall of the cable body 1. A metal shielding layer 4 is provided on the surface of the insulation layer 3 facing away from the cable body 1. A buffer layer 5 is arranged on the outer wall of the metal shielding layer 4. A waterproof layer 6 is provided on the surface of the buffer layer 5 facing away from the metal shielding layer 4. A corrosion-resistant layer 7 is arranged on the outer wall of the waterproof layer 6. A wear-resistant layer 8 is provided on the surface of the corrosion-resistant layer 7 facing away from the waterproof layer 6.

[0022] By providing the wear-resistant layer 8 on the cable body 1 and utilizing the good wear resistance of the chlorinated polyethylene material in the wear-resistant layer 8, it can work in a harsh environment, keep the cable body 1 working normally, prevent the surface of the cable body 1 from being worn, and thus avoid the situation of damage to the cable body 1. Then, through the excellent chemical corrosion resistance, high temperature resistance and wear resistance of the fluoroplastics in the corrosion-resistant layer 7, the corrosion resistance of the cable body 1 is improved to prevent the cable body 1 from being corroded by seawater. Next, through the UV resistance, chemical corrosion resistance, electrical insulation performance and anti-biodegradation performance in the waterproof layer 6, the waterproof performance of the cable body 1 is improved to prevent the cable body 1 from being easily corroded and worn in the deep-sea environment, resulting in a decline or even failure of the performance of the cable body 1, thereby affecting the normal operation of the underwater production system. By providing the buffer layer 5 on the cable body 1 and utilizing the good buffering performance of the semi-conductive butyl rubber tape in the buffer layer 5, the damage to the cable body 1 caused by external impact force can be effectively buffered. Then, through the good electrical conductivity and electromagnetic shielding effect of copper in the metal shielding layer 4, the high-voltage electric field inside the cable body 1 can be effectively resisted, and the interference of the electric field to the surrounding environment can be reduced. Next, through the excellent electrical performance, heat resistance and mechanical performance in the insulation layer 3, the cable body 1 can be applicable to various deep-sea environments.

[0023] In other embodiments, the insulation layer 3 is composed of cross-linked polyethylene material, and an antioxidant is further added into the insulation layer 3;

[0024] Through this design, due to the excellent electrical, heat-resistant and mechanical properties of the cross-linked polyethylene material in the insulating layer 3, the cable body 1 can be applied to various high-end application conditions. Meanwhile, adding antioxidants to the insulating layer 3 can extend its service life.

[0025] In other embodiments, the metal shielding layer 4 is woven from copper wires or copper strips, and the main material in the metal shielding layer 4 is copper;

[0026] Through this design, by utilizing the good electrical conductivity and electromagnetic shielding effect of copper in the metal shielding layer 4, the copper wires or copper strips are woven into the metal shielding layer 4, which can effectively resist the high-voltage electric field inside the cable body 1 and reduce the interference of the electric field on the surrounding environment.

[0027] In other embodiments, the buffer layer 5 is composed of a semi-conductive butyl rubber tape material, and the thickness of the buffer layer 5 is equal to that of the metal shielding layer 4;

[0028] Through this design, by utilizing the function of the semi-conductive butyl rubber tape in the buffer layer 5 to compensate for the thermal expansion of the main insulating layer, and it can effectively buffer the damage caused by mechanical stress to the cable body 1. Meanwhile, it is made by adding a certain amount of conductive carbon black and additives into butyl rubber, and has the advantage of high temperature resistance grade.

[0029] In other embodiments, the waterproof layer 6 is composed of polyethylene material, and the thickness of the waterproof layer 6 is equal to that of the buffer layer 5;

[0030] Through this design, by utilizing the good physical and mechanical properties of polyethylene in the waterproof layer 6, it can be used in the temperature range of -30°C to +70°C. The PE material also has good UV resistance, chemical corrosion resistance, electrical insulation performance and anti-biological degradation performance. Therefore, it is very suitable for use as the waterproof layer 6 of the cable.

[0031] In other embodiments, the corrosion-resistant layer 7 is composed of fluoroplastic material, and the thickness of the corrosion-resistant layer 7 is equal to that of the waterproof layer 6;

[0032] Through this design, by utilizing the excellent chemical corrosion resistance, high temperature resistance and wear resistance of fluoroplastic in the corrosion-resistant layer 7, the corrosion resistance of the cable body 1 is improved to prevent the cable body 1 from being damaged by seawater corrosion.

[0033] In other embodiments, the wear-resistant layer 8 is composed of chlorinated polyethylene material, and the thickness of the wear-resistant layer 8 is twice that of the waterproof layer 6;

[0034] Through this design, by utilizing the good wear resistance of chlorinated polyethylene in the wear-resistant layer 8, the cable body 1 can work in a harsh environment and maintain normal operation, preventing the cable body 1 from rubbing against the underwater rocks and being damaged.

[0035] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant umbilical cable for an underwater production system, comprising a cable body (1) and a battery core (2), wherein the cable body (1) is arranged on the outer wall of the battery core (2), and the battery core (2) comprises a plurality of wire cores arranged at equal intervals in the cable body (1), characterized in that: The outer wall of the cable body (1) is provided with an insulating layer (3); a metal shielding layer (4) is provided on a surface of the insulating layer (3) on a side facing away from the cable body (1); a buffer layer (5) is provided on an outer wall of the metal shielding layer (4); a waterproof layer (6) is provided on a surface of the buffer layer (5) on a side facing away from the metal shielding layer (4); a corrosion-resistant layer (7) is provided on an outer wall of the waterproof layer (6); and a wear-resistant layer (8) is provided on a surface of the corrosion-resistant layer (7) on a side facing away from the waterproof layer (6).

2. The corrosion-resistant umbilical cable for underwater production system according to claim 1, characterized in that: The insulating layer (3) is made of a cross-linked polyethylene material, and an antioxidant is also added into the insulating layer (3).

3. The corrosion-resistant umbilical cable for an underwater production system according to claim 1, characterized in that: The metal shielding layer (4) is woven from copper wires or copper tapes, and the main material of the metal shielding layer (4) is copper.

4. The corrosion-resistant umbilical cable for underwater production system according to claim 1, characterized in that: The buffer layer (5) is composed of a semi-conductive butyl rubber tape material, and the thickness of the buffer layer (5) is equal to the thickness of the metal shielding layer (4).

5. The corrosion-resistant umbilical cable for underwater production system according to claim 1, characterized in that: The waterproof layer (6) is made of polyethylene material, and the thickness of the waterproof layer (6) is equal to the thickness of the buffer layer (5).

6. The corrosion-resistant umbilical cable for underwater production system according to claim 1, characterized in that: The corrosion-resistant layer (7) is made of fluoroplastic material, and the thickness of the corrosion-resistant layer (7) is equal to the thickness of the waterproof layer (6).

7. The corrosion-resistant umbilical cable for underwater production system according to claim 1, characterized in that: The wear-resistant layer (8) is made of chlorinated polyethylene material, and the thickness of the wear-resistant layer (8) is twice the thickness of the waterproof layer (6).

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