Anti-collision device for deep-sea environment cable and installation method thereof

Abstract

The application discloses a kind of anti-collision devices for deep-sea environment cable, comprising: positioning ring, centering ring, sheath, the centering ring, the positioning ring is set in cable body, the centering ring and the positioning ring are parallel along the axial direction of cable body, the positioning ring is fixed to cable body, the end surface of the centering ring abuts the positioning ring, the sheath is set in the centering ring, the side wall of the centering ring is provided with installation opening.It is convenient to install on site, and anticorrosion, collision, long service life.

Description

Technical Field

[0001] The present invention relates to the field of prestressing, and in particular to an anti-collision device for a cable in a deep-sea environment and an installation method thereof. Background Art

[0002] When cables are used in marine environments, such as those used in wind power platforms, cables located near the sea level will be subject to external damage such as collisions with floating objects, scratches from sharp marine objects, and waves. It is usually necessary to set up an anti-collision structure outside the cable. In addition, in deep-sea environments, metal materials are severely corroded, and the anti-collision design of metal materials is difficult to achieve the 25-year service life requirement. The ultraviolet radiation from seawater is strong, and non-metallic materials such as Haversian tubes have a short service life in open-air marine environments. Therefore, it is necessary to design a cable protection structure that is suitable for the deep sea. However, there is currently no cable protection structure specifically designed for deep-sea environments, and general anti-collision structures are usually installed at the construction site. For deep-sea cables, the cables are long, the on-site construction efficiency is low, the construction period is long, and in marine environments, the construction site is limited, making it very difficult to install an outer protective layer on the cable. Summary of the Invention

[0003] The purpose of the present invention is to provide an anti-collision device and an installation method for a deep-sea environment cable, which is easy to install on site and has corrosion resistance, anti-collision properties and a long service life.

[0004] A collision prevention device for a deep-sea cable, comprising: a positioning ring, a centering ring, and a sheath. The centering ring and the positioning ring are sleeved outside the cable body. The centering ring and the positioning ring are arranged side by side along the axial direction of the cable body. The positioning ring is fixed to the cable body. The end face of the centering ring abuts against the positioning ring. The sheath is sleeved outside the centering ring. The side wall of the centering ring is provided with an installation opening.

[0005] In one embodiment, the anti-collision device for deep-sea environment cables further includes a strapping belt, the outer wall of the centering ring is provided with at least one mounting groove arranged along the circumference of the centering ring, and the strapping belt is fastened in the mounting groove.

[0006] In one embodiment, at least two centering rings are provided in the sheath and are spaced apart from each other.

[0007] In one embodiment, the positioning ring is a light-curable material.

[0008] In one embodiment, the light-curing material is in a strip shape, and the positioning ring is formed by winding the light-curing material around the surface of the cable body.

[0009] A method for installing an anti-collision device for a cable in a deep-sea environment includes the following steps: before leaving the factory, fixing a positioning ring to the outer wall of the cable body and putting a sheath on the cable body; transporting the cable to the site, prying open the installation opening of the centering ring, and putting the centering ring on the cable body through the installation opening so that the end face of the centering ring abuts against the positioning ring, and adjusting the position of the sheath so that the sheath is put outside the centering ring.

[0010] In one embodiment, the method for installing an anti-collision device for a deep-sea environment cable further includes the step of: using a strapping belt to tighten it in the installation groove of the centering ring.

[0011] In one embodiment, the method for installing an anti-collision device for a deep-sea environment cable further includes the step of placing a protective material between the sheath and the cable before leaving the factory.

[0012] In one embodiment, the installation method of the anti-collision device for deep-sea environment cables further includes the following steps: before leaving the factory, calculating the installation position of the sheath on the cable body, wrapping a strip of photocurable material around the corresponding position of the cable body, and photocuring the photocurable material to form the positioning ring.

[0013] Compared with the prior art, the anti-collision device for deep-sea cable of the present invention has the following advantages:

[0014] 1. In the present invention, the sheath is a complete, seamless cylindrical shape, providing excellent protection for the cable body. The centering ring is provided with an installation opening, facilitating on-site installation of the centering ring. The installation opening does not compromise the protective effectiveness of the sheath. The sheath is pre-installed on the cable body at the factory, requiring only installation of the centering ring and adjustment of the sheath on-site. The sheath is removably positioned in a pre-set position using protective material, making it easy to locate and position the appropriate sheath, simplifying operation and minimizing time.

[0015] 2. The positioning ring is made of light-curing material, which will not be aged by light and oxygen, making it more reliable and avoiding the situation where the filling layer in the sheath fails to clamp and moves downward.

[0016] 3. The use of spaced centering rings saves more materials and is more economical than the existing fully filled structure design. It also solves the problem that the existing fully filled structure cannot be constructed and cured in the marine environment.

[0017] The present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, which are used to illustrate embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of an anti-collision device for a deep-sea cable according to an embodiment of the present invention;

[0020] Figure 2 is a schematic cross-sectional view of a centering ring according to an embodiment of the present invention;

[0021] Figure 3 is a schematic axial cross-sectional view of the center ring in an embodiment of the present invention;

[0022] Figure 4 This is a structural diagram of the splicing method of the sheath of the anti-collision device for deep-sea environment cable according to an embodiment of the present invention;

[0023] Figure 5 The figure is a flowchart of the steps of the method for installing an anti-collision device for a deep-sea environment cable according to an embodiment of the present invention.

[0024] Among them, 1. sheath, 2. centering ring, 3. positioning ring, 4. strapping belt, 5. cable body, 6. installation opening, 7. installation groove. DETAILED DESCRIPTION

[0025] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0026] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] This embodiment Figure 1-5 As shown, the anti-collision device for a deep-sea cable includes: a positioning ring 3, a centering ring 2, and a sheath 1. The centering ring 2 and positioning ring 3 are sleeved over the cable body 5. The centering ring 2 and positioning ring 3 are axially aligned with each other along the cable body 5. The positioning ring 3 is fixed to the cable body 5, with the end face of the centering ring 2 abutting the positioning ring 3. The sheath 1 is sleeved over the centering ring 2, and the sidewall of the centering ring 2 is provided with a mounting opening 6. Friction between the centering ring 2 and the sheath 1 helps position the sheath 1 on the cable body 5 and prevent it from sliding on the cable body 5. In this embodiment, the outer diameter of the centering ring 2 is slightly larger than the inner diameter of the sheath 1. With force, the sheath 1 can be inserted over the centering ring 2, and the position of the sheath 1 on the centering ring 2 can also be adjusted. The slightly larger centering ring 2 can prevent the sheath 1 from slipping off. In this way, the positioning ring 3 is fixed to the cable body 5, the centering ring 2 is positioned by the positioning ring 3, and the sheath 1 is tightly sleeved over the centering ring 2, achieving the positioning and installation of the sheath 1. Furthermore, the sheath 1 is cylindrical, so impacts from the side of the sheath 1 exert minimal axial force on the sheath 1 and prevent it from slipping off the centering ring 2. In the present invention, the sheath 1 is a complete, seamless cylindrical shape, providing excellent protection for the cable body 5. The centering ring 2 is provided with an installation opening 6, facilitating on-site installation of the centering ring 2. The provision of the installation opening 6 in the centering ring 2 does not reduce the protective effectiveness of the sheath 1. Furthermore, in the present invention, the sheath 1 is pre-installed on the cable body 5 before the cable leaves the factory. On-site installation requires only installing the centering ring 2 and adjusting the position of the sheath 1. The sheath 1 is removably positioned in a predetermined position (sleeved over the corresponding centering ring 2) using protective material, making it easy to locate and position the corresponding sheath 1, making operation very simple. In this embodiment, the sheath 1 is made of high-density polyethylene material, which can adapt to the harsh environment of high corrosion in the marine environment. The high-density polyethylene sheath 1 is resistant to seawater corrosion and has a service life far greater than that of existing products. Figure 1 、 4 As shown in the figure, only one end face of the centering ring 2 is shown against the positioning ring 3, but it is not limited to this. It can also be designed that positioning rings 3 are provided at both ends of the centering ring 2, and the end faces at both ends of the centering ring 2 are against the positioning ring 3.

[0029] The deep-sea cable anti-collision device also includes a strapping strap 4. The outer wall of the centering ring 2 is provided with at least one mounting groove 7 extending along the circumference of the centering ring 2. The strapping strap 4 is secured within the mounting groove 7. The strapping strap 4, which may include but is not limited to nylon, stainless steel, or plastic-sprayed stainless steel straps, is used to securely close the centering ring 2 after installation. The mounting groove 7 provides a positioning mechanism for the strapping strap 4 and a force-bearing point, ensuring that the strapping strap 4 remains firmly attached to the centering ring 2, preventing it from becoming loose.

[0030] At least two spaced centering rings 2 are provided within the jacket 1. This spacing of centering rings 2 reduces material consumption and offers greater economic benefits compared to existing fully-filled designs. It also addresses the existing challenge of fully-filled structures, which are difficult to construct and cure in marine environments. The centering rings 2 also ensure concentricity between the jacket 1 and the cable body 5 and absorb harmful energy from external impacts, providing cushioning, vibration reduction, and protection.

[0031] In this embodiment, the positioning ring 3 is made of a light-curing material. Light-curing material refers to a material that cures on the outer wall of the cable body 5 under sunlight or ultraviolet light. Using a light-curing material prevents light-oxidation aging of the positioning ring 3, making it more reliable and preventing the filling layer within the sheath 1 from failing or shifting downward.

[0032] The light-curing material is in the form of a ribbon, and the positioning ring 3 is formed by wrapping the light-curing material around the surface of the cable body 5. Multiple wrappings of the light-curing material allow the positioning ring 3 to adhere tightly to the outer surface of the cable body 5, improving the stability of the positioning ring 3 on the cable body 5. In this embodiment, the positioning ring 3 is made of Inachuan NANO-XF 6000 photochemical composite ceramic protective tape, which is then wrapped and cured. This material has excellent hardness, strength, wear resistance, and corrosion resistance in seawater.

[0033] In this embodiment, the installation method of the anti-collision device for deep-sea environment cable is as follows: Figure 5 As shown, the steps include:

[0034] 1. Before leaving the factory, after the cable is cut, calculate the installation position of the sheath 1 on the cable body 5, wrap a strip of light-curing material around the corresponding position of the cable body 5, and light-cure the light-curing material to form a positioning ring 3. Preferably, use an ultraviolet lamp to fix the positioning ring 3 to the outer wall of the cable body 5;

[0035] 2. Before making the cable, put all the sheaths 1 on the outside of the cable body 5;

[0036] 3. Complete the cable making;

[0037] 4. Draw the cable into a coil, arrange the sheath 1 on the cable body 5 at intervals according to the calculated positions, and fill the gap between the sheath 1 and the cable body 5 with protective materials, including but not limited to non-woven fabrics and sponges;

[0038] 5. After the reel is completed, it is transported to the construction site, where it is placed on the reel, the cables are hung, and the cables are installed in the appropriate positions;

[0039] 6. Transport the cable to the site, move the sheath 1, take out the filled protective material, pry open the installation opening 6 of the centering ring 2, and put the centering ring 2 on the outside of the cable body 5 through the installation opening 6, so that the end face of the centering ring 2 is against the positioning ring 3, and use the strapping tape 4 to tighten the centering ring 2 in the installation groove 7 of the centering ring 2. If one sheath 1 corresponds to multiple centering rings 2, after installing the centering rings 2 in sequence, adjust the position of the sheath 1 so that the sheath 1 is put on the outside of the centering ring 2 to complete the installation of the anti-collision structure.

[0040] For the installation of the sheath 1 over a long distance on the cable body 5, a plurality of sheaths 1 can be connected end to end, such as Figure 4 As shown, the left and right sheaths 1 are spliced ​​together to form a longer length of sheath 1. Splicing the sheath 1 in sections is convenient for cable winding and transportation without affecting the protective performance of the sheath 1.

[0041] In this embodiment, the sheath 1 is installed on the cable body 5 before shipment, without installing the centering ring 2. This facilitates bending of the sheath 1, facilitates cable reeling and transportation, and prevents damage to the sheath 1 during transportation. Furthermore, the sheath 1 is complete and seamless when installed on the cable body 5 before shipment, ensuring its protective effectiveness. In the present invention, only the centering ring 2 and the position of the sheath 1 need to be installed on site. Furthermore, since the positioning ring 3 is already installed on the outer wall of the cable body 5 before shipment, the centering ring 2 can be installed quickly, significantly improving on-site installation efficiency.

[0042] The strapping band 4 tightens the centering ring 2 to prevent the centering ring 2 from spreading out from its mounting opening 6 . The mounting groove 7 also prevents the strapping band 4 from being exposed on the outer surface of the centering ring 2 , making it easier to move the sheath 1 on the centering ring 2 .

[0043] The protective material is a soft protective object, including but not limited to non-woven fabric and sponge.

[0044] The present invention has been described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. An anti-collision device for a deep-sea cable, characterized in that: include: A positioning ring, a centering ring, and a sheath, wherein the centering ring and the positioning ring are sleeved outside the cable body, the centering ring and the positioning ring are arranged side by side along the axial direction of the cable body, the positioning ring is a photocurable material, and the photocurable material is in a strip shape. The positioning ring is composed of the photocurable material wrapped around the surface of the cable body, the positioning ring is fixed to the cable body, the end face of the centering ring is against the positioning ring, the sheath is seamless, and the sheath is sleeved outside the centering ring, and the side wall of the centering ring is provided with an installation opening.

2. The anti-collision device for deep-sea cable according to claim 1, characterized in that: It also includes a strapping belt. The outer wall of the centering ring is provided with at least one mounting groove arranged along the circumference of the centering ring, and the strapping belt is tightly tied in the mounting groove.

3. The anti-collision device for deep-sea cable according to claim 1, characterized in that: At least two centering rings are arranged at intervals in the sheath.

4. A method for installing an anti-collision device for a deep-sea cable according to any one of claims 1 to 3, characterized in that: Including steps: Before leaving the factory, a positioning ring is fixed to the outer wall of the cable body, a light-curing material is light-cured to form the positioning ring, and a seamless sheath is put on the cable body; Transport the cable to the site, pry open the installation opening of the centering ring, and sleeve the centering ring outside the cable body through the installation opening so that the end face of the centering ring rests against the positioning ring, and adjust the position of the sheath so that the sheath is sleeved outside the centering ring.

5. The method for installing an anti-collision device for a deep-sea cable according to claim 4, characterized in that: The method further comprises the step of: using a strapping belt to tighten the mounting groove of the centering ring.

6. The method for installing an anti-collision device for a deep-sea cable according to claim 4, characterized in that: The method further comprises the step of placing a protective material between the sheath and the cable before leaving the factory.

7. The method for installing an anti-collision device for a deep-sea cable according to claim 4, characterized in that: Before leaving the factory, the installation position of the sheath on the cable body is calculated, and the strip-shaped light-curing material is wound around the corresponding position of the cable body.

Images