CN113937708B - Submarine cable anchor damage prevention device with protection plate and working method thereof - Google Patents
Submarine cable anchor damage prevention device with protection plate and working method thereof Download PDFInfo
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- CN113937708B CN113937708B CN202111162021.XA CN202111162021A CN113937708B CN 113937708 B CN113937708 B CN 113937708B CN 202111162021 A CN202111162021 A CN 202111162021A CN 113937708 B CN113937708 B CN 113937708B
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- protection
- submarine cable
- anchor
- protection plate
- plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
- H02G9/025—Coverings therefor, e.g. tile
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- Laying Of Electric Cables Or Lines Outside (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention discloses a submarine cable anchor damage prevention device with a protection plate and a working method thereof, and relates to the field of submarine cable protection devices. Aiming at the protection of the bare submarine cable, the method mainly adopts riprap and a concrete chain block, but the two protection modes are very easy to be hooked by a ship anchor to lose the protection effect, thereby causing the damage of the submarine cable. The submarine cable protection device comprises a protection shell arranged outside a submarine cable and protection plates arranged on two sides of the protection shell and used for preventing the protection shell from being hooked by a ship anchor, each protection plate is rotatably connected to the upper ends of two sides of the protection shell, and each protection plate is connected with the outer side wall of the protection shell through a tension spring. Due to the protection of the protection plate, the ship anchor is connected with the protection plate at most and cannot be hooked, so that the protection shell is prevented from being hooked, the protection shell cannot be damaged, the ship anchor can be effectively prevented from hooking and connecting the submarine cable, and the submarine cable can be protected for a long time.
Description
Technical Field
The invention relates to the field of submarine cable protection devices, in particular to a submarine cable anchor damage prevention device with a protection plate and a working method thereof.
Background
The construction of submarine cable engineering relates to technical field extensively, and the investment scale is great, but, because receive the influence of hydrology and boats and ships of coming and going, the submarine cable can appear exposing and receive the harm, and it is very important how to avoid the submarine cable to produce unnecessary injury. Taking the navian sea area as an example, 500 kv submarine cables cross a Ningbo to navian straits, a cross-sea bridge from Ningbo to navian is arranged on the south side, a main navigation channel in the south and north directions of the sea area on the west side has busy sea traffic, numerous ships and serious threat of submarine cable anchor damage. How to comprehensively prevent the ship anchor threat which is possibly generated in time is a problem which is urgently needed to be solved for ensuring the stable operation of the submarine cable at present.
At present, the protection of the bare submarine cable is mainly implemented by riprapping and concrete chain blocks in China, but the two protection modes are very easy to be hooked by a ship anchor to lose the protection effect, so that the submarine cable is damaged. The prior art has limited protective effect on submarine cables and lower construction efficiency, and can not meet the long-time submarine cable protection requirement.
Disclosure of Invention
The invention aims to solve the technical problems and provide a technical task for improving the prior technical scheme, and provides a submarine cable anchor damage prevention device with a protection plate and a working method thereof, so as to prevent ship anchors from hooking and damaging submarine cables. Therefore, the invention adopts the following technical scheme.
The utility model provides a submarine cable who takes protection shield prevents anchor evil device which characterized in that: the submarine cable protection device comprises a protection shell arranged outside a submarine cable and protection plates arranged on two sides of the protection shell and used for preventing the protection shell from being hooked by a ship anchor, wherein each protection plate is rotatably connected to the upper ends of two sides of the protection shell, and each protection plate is connected with the outer side wall of the protection shell through an elastic piece; when the protective plate is not subjected to external force, the included angle between the protective plate and the protective shell is alpha, wherein alpha is more than or equal to 20 degrees and less than or equal to 30 degrees; the section of the protective shell is in an isosceles trapezoid shape with a small upper part and a big lower part, the included angle between the side edge and the bottom edge of the protective shell is beta, wherein beta is more than or equal to 60 and less than or equal to 70 degrees, and the bottom of the protective shell is provided with a notch for sleeving a protected submarine cable;
when the anchor damage prevention device is installed, the anchor damage prevention devices are arranged and covered on the submarine cable one by one along the direction of the submarine cable, at the moment, the elastic piece is in a contraction state, the protection plate faces downwards, when the ship anchor falls onto the protection plate, the ship anchor slides to the bottom of the protection plate and hooks the protection plate, and in the process that the ship anchor moves forwards slowly, the protection plate is pulled by the ship anchor to be overturned continuously, so that the ship anchor crosses the protection plate to leave the protection part, and the hooking damage of the ship anchor to the submarine cable is avoided.
The device is high in installation and construction speed, and can protect the submarine cable for a long time. And because the included angle alpha exists between the protection plate and the protection shell, the ship anchor can be prevented from extending inwards into the protection shell, the protection shell is in an isosceles trapezoid shape, the contact surface with the ground is large, the center of gravity is low, and the ship anchor is not easy to overturn. The included angle between the side edge and the bottom edge of the protection shell is 60-70 degrees, so that the submarine cable anchor damage prevention device can give consideration to both the volume and the protection effect.
As a preferable technical means: the protection shield and protection casing both sides face on all be equipped with the shackle, tension spring's both ends connect on the shackle of protection shield and protection casing side. Effectively realize tension spring's connection structure.
As a preferable technical means: the width of the protection plate is the same as that of the protection shell, the width direction is the axial direction of the protected submarine cable, and the length dimension of the protection plate is more than 120% of the length dimension of the two side faces of the protection shell in an inclined mode. The length and size of the protection plate can effectively protect the side face and the bottom of the protection shell, and ship anchor hooking is avoided.
As a preferable technical means: the width of the notch is more than 1.5 times of the diameter of the protected submarine cable, and the length of the upper edge of the protection shell is 4-6 times of the diameter of the protected submarine cable. The submarine cable is convenient to sleeve, and the submarine cable is effectively protected.
As a preferable technical means: the protective plate is made of a corrosion-resistant light plate. The protective plate can be an aluminum alloy plate, a titanium alloy plate, a plastic plate and the like; the protection board is made of light materials, so that the protection board can be turned upwards easily when the ship anchor is hooked with the protection board.
As a preferable technical means: the protective shell is cast by concrete. Convenient manufacture, high strength and low cost.
As a preferable technical means: the surface of the protective plate is coated with an anti-corrosion coating. The anti-corrosion coating can meet the reliability requirement of the protective plate for long-term underwater work.
Another object of the present invention is to provide a method for operating an anchor damage prevention apparatus for an ocean cable.
A working method of the submarine cable anchor damage prevention device comprises the following steps:
1) The anchor damage prevention devices are adjacently arranged on the exposed submarine cable one by one along the direction of the submarine cable, at the moment, the tension spring is in a contraction state, and the protection plate faces downwards;
2) When the ship anchor falls onto the protection plate, the ship anchor slides to the bottom of the protection plate to hook the protection plate;
3) When the ship anchor moves forwards slowly, the protection plate is pulled by the ship anchor to turn upwards continuously, the angle is increased gradually, the tension spring is driven to stretch continuously, and when the protection plate forms a certain turning-upwards angle, the ship anchor automatically crosses the protection device to leave the protection part;
4) After the ship anchor automatically crosses the protection device, the protection plate is gradually turned down under the contraction action of the tension spring to recover the original state.
Has the advantages that: this device installation construction speed is fast, can make the protection casing avoid being colluded, can effectively prevent ship anchor to submarine cable's the damage of linking with of colluding, can effectually realize high quality, and anchor damage protection is prevented to long period's submarine cable, reduces submarine cable maintenance number of times, has reduced the input of manpower and material resources.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of the ship anchor hooking during the protection of the submarine cable according to the present invention.
Fig. 3 is a schematic view of the protection plate being turned up when the submarine cable according to the present invention is protected.
In the figure: 1. a protective housing; 2. a protection plate; 3. a tension spring; 4. a shackle; 5. a submarine cable; 6. a boat anchor; 101. a notch.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in fig. 1, a submarine cable anchor damage prevention device with protection plates comprises a protection shell 1 arranged outside a submarine cable 5 and protection plates 2 arranged on two sides of the protection shell 1 and used for preventing the protection shell 1 from being hooked by ship anchors 6, wherein each protection plate 2 is rotatably connected to the upper ends of two sides of the protection shell 1, and each protection plate 2 is connected with the outer side wall of the protection shell 1 through a tension spring 3; when the protection plate is not subjected to external force, the included angle between the protection plate 2 and the protection shell 1 is alpha, wherein alpha is more than or equal to 20 degrees and less than or equal to 30 degrees; the section of the protective shell 1 is in an isosceles trapezoid shape with a small upper part and a big lower part, the included angle between the side edge and the bottom edge of the protective shell 1 is beta, wherein beta is more than or equal to 60 degrees and less than or equal to 70 degrees, and the bottom of the protective shell 1 is provided with a notch 101 for sleeving the protected submarine cable 5;
when the anchor damage prevention device is installed, the anchor damage prevention devices are arranged and covered on the submarine cable 5 one by one along the direction of the submarine cable 5, at the moment, the elastic piece is in a contraction state, the protection plate 2 faces downwards, when the ship anchor 6 falls onto the protection plate 2, the ship anchor slides to the bottom of the protection plate 2 to hook the protection plate 2, and in the process that the ship anchor 6 moves forwards slowly, the protection plate 2 is pulled by the ship anchor 6 to be overturned continuously, so that the ship anchor 6 passes over the protection plate 2 to leave a protection part, and the ship anchor 6 is prevented from hooking and damaging the submarine cable 5.
In order to realize the connection of the tension spring 3, the protection plate 2 and the protection shell 1 are both provided with a hook ring 4 on the two side surfaces, and the two ends of the tension spring 3 are connected to the hook rings 4 on the side surfaces of the protection plate 2 and the protection shell 1. The connection structure of the tension spring 3 is effectively realized.
In order to avoid the damage of the protective shell 1 caused by the hooking of the ship anchor 6, the width of the protective plate 2 is the same as that of the protective shell 1, the width direction is the axial direction of the protected submarine cable 5, and the length dimension of the protective plate 2 is more than 120% of the length dimension of the two side surfaces of the protective shell 1 in the oblique direction. The protection to protection casing 1 side and bottom can effectively be realized to the length dimension of protection shield 2, avoids ship anchor 6 to collude and links up and destroy protection casing 1.
In order to avoid crushing the submarine cable 5, the bottom plate of the protective casing 1 is provided with a notch 101 for nesting the protected submarine cable 5. The submarine cable 5 can be conveniently sleeved, the submarine cable 5 is prevented from being crushed, and the submarine cable 5 is effectively protected.
In order to make the protection plate 2 easily turned up, a lightweight composite plate is used for the protection plate 2. The material is light, so that the protection plate 2 is easy to turn up when the ship anchor 6 is hooked with the protection plate 2.
For ease of manufacture, the protective casing 1 is cast in concrete. Convenient manufacture, high strength and low cost.
In order to meet the reliability requirement of the protective plate 2 working underwater for a long time, the surface of the protective plate 2 is coated with an anti-corrosion coating. The anti-corrosion coating can meet the reliability requirement of the protective plate 2 for long-term underwater work.
As shown in fig. 2 and 3, the protection principle process of the submarine cable anchor damage prevention device with the protection plate is as follows:
firstly, the anchor damage prevention devices are adjacently arranged on the exposed submarine cable 5 one by one along the submarine cable 5, at the moment, the tension spring 3 is in a contracted state, and the protection plate 2 faces downwards;
then, in the process that the ship anchor 6 is pulled by the anchor chain to move forwards, the ship anchor 6 hooks the protection plate 2 due to the fact that the protection plate 2 facing downwards shields the ship anchor, and the concrete protection shell 1 is prevented from being hooked;
then, in the process that the ship anchor 6 moves forwards slowly, the protection plate 2 is pulled by the ship anchor 6 to be turned upwards continuously, the angle is gradually increased, at the moment, the tension spring 3 is driven to be stretched continuously, and after the protection plate 2 forms a certain upwards-turned angle, the ship anchor 6 automatically crosses the protection device to leave the protection part;
finally, after the boat anchor 6 automatically crosses the protection device, the protection plate 2 is gradually turned down under the contraction action of the tension spring 3 to recover the original state.
The protection process is simple and reliable, the anchor damage of the ship anchor 6 to the submarine cable 5 can be effectively prevented, the installation and construction speed of the device is high, the submarine cable 5 can be protected for a long time, and long-period high-quality protection is realized.
The device for preventing anchor damage of submarine cable with protective plate and the working method thereof shown in fig. 1-3 are the specific embodiments of the present invention, which have embodied the substantial features and advantages of the present invention, and can be modified in shape, structure and the like according to the practical needs and with the teaching of the present invention, and are within the protection scope of the present invention.
Claims (8)
1. The utility model provides a submarine cable who takes protection shield prevents anchor evil device which characterized in that: the submarine cable protection device comprises a protection shell (1) arranged outside a submarine cable (5) and protection plates (2) which are arranged on two sides of the protection shell (1) and used for preventing the protection shell (1) from being hooked by a ship anchor (6), wherein each protection plate (2) is rotatably connected to the upper ends of two sides of the protection shell (1), and each protection plate (2) is connected with the outer side wall of the protection shell (1) through an elastic piece; when the protection plate is not subjected to external force, the included angle between the protection plate (2) and the side edge of the protection shell (1) is alpha, wherein alpha is more than or equal to 20 degrees and less than or equal to 30 degrees; the section of the protective shell (1) is in an isosceles trapezoid shape with a small upper part and a large lower part, the included angle between the side edge and the bottom edge of the protective shell (1) is beta, wherein beta is more than or equal to 60 degrees and less than or equal to 70 degrees, and the bottom of the protective shell (1) is provided with a notch (101) for sleeving the protected submarine cable (5);
when the anchor damage prevention device is installed, the anchor damage prevention devices are arranged and covered on the submarine cable (5) one by one along the direction of the submarine cable (5), at the moment, the elastic piece is in a contraction state, the protection plate (2) faces downwards, when the ship anchor (6) falls onto the protection plate (2), the ship anchor slides to the bottom of the protection plate (2) to hook the protection plate (2), in the process that the ship anchor (6) slowly moves forwards, the protection plate (2) is continuously pulled by the ship anchor (6) to overturn upwards, so that the ship anchor (6) crosses the protection plate (2) to leave a protection part, and the ship anchor (6) is prevented from hooking and damaging the submarine cable (5).
2. The submarine cable anchor damage prevention device with protective plate according to claim 1, wherein: the elastic piece is a tension spring (3); both sides of the protective plate (2) and the protective shell (1) are provided with hooks (4), and both ends of the tension spring (3) are connected to the hooks (4) on the sides of the protective plate (2) and the protective shell (1).
3. The submarine cable anchor damage prevention device with protection plate according to claim 1, wherein: the width of the protection plate (2) is the same as that of the protection shell (1), the width direction is the axial direction of the protected submarine cable (5), and the length dimension of the protection plate (2) is more than 120% of the length dimension of two side faces of the protection shell (1) in an inclined mode.
4. The submarine cable anchor damage prevention device with protection plate according to claim 1, wherein: the width of the notch (101) is more than 1.5 times of the diameter of the protected submarine cable (5), and the length of the upper edge of the protection shell (1) is 4-6 times of the diameter of the protected submarine cable (5).
5. The submarine cable anchor damage prevention device with protective plate according to claim 1, wherein: the protective plate (2) is a corrosion-resistant light plate.
6. The submarine cable anchor damage prevention device with protective plate according to claim 1, wherein: the protective shell (1) is cast by concrete.
7. The submarine cable anchor damage prevention device with protection plate according to claim 1, wherein: the surface of the protective plate (2) is coated with an anti-corrosion coating.
8. A method of operating a device for protecting a submarine cable from anchor damage according to any one of claims 1 to 7, comprising:
1) The anchor damage prevention devices are adjacently arranged on the exposed submarine cable (5) along the direction of the submarine cable (5), at the moment, the tension spring (3) is in a contraction state, and the protection plate (2) faces downwards;
2) When the ship anchor falls onto the protection plate, the ship anchor slides to the bottom of the protection plate to hook the protection plate;
3) In the process that the ship anchor (6) moves forwards slowly, the protective plate (2) is pulled by the ship anchor (6) to be turned upwards continuously, the angle is increased gradually, at the moment, the tension spring (3) is driven to be stretched continuously, and after the protective plate (2) forms a certain turning-up angle, the ship anchor (6) automatically crosses the protective device to leave the protective part;
4) After the boat anchor (6) automatically crosses the protection device, the protection plate (2) is gradually turned down under the contraction action of the tension spring (3) to recover the original state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111162021.XA CN113937708B (en) | 2021-09-30 | 2021-09-30 | Submarine cable anchor damage prevention device with protection plate and working method thereof |
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| CN202111162021.XA CN113937708B (en) | 2021-09-30 | 2021-09-30 | Submarine cable anchor damage prevention device with protection plate and working method thereof |
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| CN113937708A CN113937708A (en) | 2022-01-14 |
| CN113937708B true CN113937708B (en) | 2022-11-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199863B (en) * | 2022-08-19 | 2023-05-02 | 中国石油大学(北京) | Multifunctional submarine pipeline protection device |
| CN115833021B (en) * | 2023-02-24 | 2023-06-23 | 中国电建集团山东电力建设第一工程有限公司 | Submarine cable fixing device |
| CN116799738B (en) * | 2023-08-17 | 2023-10-24 | 河北方科电缆有限公司 | Submarine cable |
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| CN113937708A (en) | 2022-01-14 |
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