CN113937709B - Submarine cable anchor damage prevention device inserted into seabed - Google Patents
Submarine cable anchor damage prevention device inserted into seabed Download PDFInfo
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- CN113937709B CN113937709B CN202111165248.XA CN202111165248A CN113937709B CN 113937709 B CN113937709 B CN 113937709B CN 202111165248 A CN202111165248 A CN 202111165248A CN 113937709 B CN113937709 B CN 113937709B
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- protective shell
- main body
- anchor
- shell main
- submarine cable
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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 an anchor damage prevention device for a submarine cable inserted into the seabed, and relates to the field of submarine cable protection devices. Aiming at the protection of the submarine cable in a special section or an exposed section with shallow partial burial depth, most of the submarine cables adopt the methods of stone throwing, sand bag covering, concrete chain block throwing and the like, are easily influenced by hydrology, have little hooking protection effect on a ship anchor and cannot meet the high-quality and long-period submarine cable protection requirement. The invention comprises a U-shaped protective shell main body, wherein 2 anti-settling resistance clapboards are arranged on the inner side of the lower part of the protective shell main body, the protective shell main body is divided into an upper part and a lower part by the resistance clapboards, the height ratio of the upper part to the lower part is 1-2, a gap larger than the diameter of a submarine cable is arranged between 2 resistance clapboards, the upper part of the protective shell main body is provided with a drain hole, and the lower ends of two sides of the protective shell main body are provided with insertion parts for being inserted into the seabed. The technical scheme has the advantages of simple structure, stability and reliability, and can effectively prevent the ship anchor from hooking and damaging the submarine cable and realize long-term submarine cable protection.
Description
Technical Field
The invention relates to the field of submarine cable protection devices, in particular to a submarine cable anchor damage prevention device inserted into the seabed.
Background
In the process of island networking and offshore renewable energy power station networking, the laying route of the submarine cable often passes through a main navigation channel or a fishing ground operation area with heavy sea traffic and numerous ships. This results in damage to the vessel anchor during the process of ship anchoring, which is inevitable for some special section sea cables that are bare or buried shallowly. Therefore, it is necessary to guarantee the stable operation of the networked power supply and effectively avoid the damage of the ship anchor which may be generated at any time.
At present, the method of trenching and burying is mainly adopted for protecting the submarine cable, and the main methods for protecting the submarine cable in a special section or an exposed section with shallow partial burying depth include stone throwing, sand bag covering, concrete chain block throwing and the like. But the existing protection method is very easily influenced by hydrology and has little hooking protection effect on the ship anchor. Because the existing protection means have limited functions, the protection requirements of high quality and long period of submarine cables cannot be met.
Disclosure of Invention
The invention aims to solve the technical problems and provide a technical task for improving the prior technical scheme and providing an anchor damage prevention device for a submarine cable inserted into the seabed so as to prevent the ship anchor from hooking and damaging the submarine cable and realize the aim of long-term submarine cable protection. Therefore, the invention adopts the following technical scheme.
A submarine cable anchor damage prevention device inserted into the seabed comprises a protective shell main body which is provided with a U-shaped cross section and has an opening at the lower end, wherein the protective shell main body is settled by utilizing the self gravity and penetrates through the protective shell main body in the front-back direction, 2 anti-settling resistance separation plates are arranged on the inner side of the lower part of the protective shell main body, the protective shell main body is divided into an upper part and a lower part by the resistance separation plates, and a submarine cable protection cavity for accommodating submarine cables is formed in the upper part; the lower part is a positioning seat for being inserted into the seabed; the height ratio of the upper part to the lower part is 1-2; a gap which is larger than the diameter of the submarine cable and penetrates through the front and the back is arranged between the 2 resistance clapboards, a plurality of drain holes which penetrate through the side wall are arranged at the upper part of the protective shell main body, and inserting parts which are used for being inserted into the seabed are arranged at the lower ends of the two sides of the protective shell main body; the density of the protective shell main body is at least more than 2 times of the water density, and a horn part with a large lower part and a small upper part is arranged between the insertion part of the protective shell main body and the resistance clapboard; the top end surface and two side surfaces of the protective shell main body are in rounded corner transition;
when the anchor damage prevention device is installed, the anchor damage prevention device is hoisted along the direction of the submarine cable to be arranged one by one in a sedimentation mode to protect the submarine cable, the middle of the anchor damage prevention device is aligned with the submarine cable, a gap formed by the 2 resistance partition plates is opposite to the submarine cable, the inserting part is inserted into the seabed by utilizing gravity until the resistance partition plates are supported on the seabed, and the submarine cable is covered by the protective shell main body to be positioned in the submarine cable protection cavity; when the anchor chain slowly pulls the ship anchor to move forwards, the ship anchor passes through the horn part and the round angle of the anchor damage prevention device and leaves the submarine cable protection area, so that the ship anchor is prevented from hooking and damaging the submarine cable. In order to prevent the anchor from being hooked, the top of the device is provided with a round angle, the lower part of the device is provided with a horn part, an insertion part below the horn part is deeply inserted into a seabed, the anchor cannot penetrate through the anchor damage prevention device through the insertion part, and the horn part has a guiding function, so that the anchor can move upwards along the trend in the moving process and cross the round angle. The horn part is big end up, can be in the inserting process, extrudees the seabed, improves the stability of inserting, and big end up's structure also makes the focus move down, and stability is better. The height ratio of the upper part to the lower part is 1-2, so that the stability after installation can be improved, the size and the cost are also considered while the submarine cable is protected, the construction is convenient, and the alignment is easy.
When the anchor damage prevention device is installed, the anchor damage prevention device is hoisted along the direction of the submarine cable and is arranged in a sedimentation mode one by one, the submarine cable is located at the position of the notch, the inserting portion is inserted into the seabed through gravity, the submarine cable can be well covered, when the submarine cable is settled, the front portion and the rear portion of the protective shell body penetrate through the protective shell body, the side face of the protective shell body is provided with the drain holes, seawater can stably enter the submarine cable, the sedimentation stability is good, the resistance baffle is supported on the seabed, excessive sedimentation cannot be caused, in the process that the anchor chain slowly pulls the ship anchor to move forwards, the top of the anchor damage prevention device supports the anchor chain, the ship anchor is driven to anchor, the ship anchor automatically crosses the anchor damage prevention device to leave a submarine cable protection area, the device is simple in structure, stable and reliable, the hooking damage of the ship anchor to the submarine cable can be effectively prevented, and long-term submarine cable protection is achieved.
As a preferable technical means: the cross section of the end part of the insertion part is in a wedge shape with a downward pointed end. The wedge-shaped shape with the downward pointed end is convenient for the insertion part to be inserted into the seabed, the insertion resistance is small, the stability is high, and the anchor injury prevention device can be stably and reliably deployed on the seabed.
As a preferable technical means: the two resistance clapboards are horizontally and symmetrically arranged. Simple structure, convenient manufacture, good bearing performance and easy centering.
As a preferable technical means: the transverse distance of the insertion parts at two sides of the protective shell main body is greater than that of two sides of the upper part of the protective shell main body. The lower extreme distance is broad, can make and prevent that the anchor harms device disposes in the seabed more steadily, can effectively promote the protective capacities of turning on one's side.
As a preferable technical means: the number of the drain holes on each side of the protective shell main body is more than 7, and the drain holes are arranged at equal intervals in the longitudinal direction. The number of the drain holes is large, the arrangement structure is uniform, and the stress stability of the anchor damage prevention device is good when water is passed.
As a preferable technical means: the radius of the fillet at the fillet transition is R, and R is 40 mm-100 mm. Can effectively reduce the resistance when the ship anchor passes through the anchor and prevent being hooked.
As a preferable technical means: the top both sides of protective housing main part be equipped with installation rings. The hoisting installation of the crane can be facilitated.
As a preferable technical means: the radius angle department of the top both sides of protective housing main part be equipped with the inside and outside fabrication hole that runs through, the radius angle department of both sides around the fabrication hole is fixed in at the both ends of fixed pin, installation rings overcoat in fixed pin. Effectively realize the connection structure of installation rings.
As a preferable technical means: the diameters of the installation hoisting ring, the fabrication hole and the drain hole are all smaller than the arc radius of the anchor point of the ship anchor. Avoiding being hooked by the anchor tip of the ship anchor.
As a preferable technical means: the protective housing main body and the resistance clapboard are of a reinforced concrete integrated pouring structure, and the fixing pins are formed by pouring embedded steel bars. The reinforced concrete integral pouring structure is adopted, the structural strength is high, the gravity is large, the seawater corrosion resistance is good, and the cost is low.
Has the advantages that: this device simple structure, low in manufacturing cost, simple to operate subsides stability good, can effectively prevent the ship anchor to submarine cable's the damage of linking with of colluding, can effectually realize high quality, the 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 invention for preventing anchor damage.
In the figure: 1. a protective case main body; 2. installing a lifting ring; 3. a sea cable; 4. a ship anchor; 5. an anchor chain; 101. an insertion portion; 102. a resistance diaphragm; 103. a drain hole; 104. and fixing the pin.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in fig. 1-2, an anchor damage preventing device for a submarine cable inserted into the seabed comprises a protective shell main body 1 with a U-shaped cross section, wherein the lower end of the protective shell main body 1 is provided with an opening, the protective shell main body 1 penetrates through the protective shell main body in the front-back direction, 2 anti-settling resistance partition plates 102 are arranged on the inner side of the lower part of the protective shell main body 1, the resistance partition plates 102 divide the protective shell main body 1 into an upper part and a lower part, and the upper part forms a submarine cable protection cavity for accommodating the submarine cable; the lower part is a positioning seat for being inserted into the seabed; the height ratio of the upper part to the lower part is 1.5; a gap which is larger than the diameter of the submarine cable 3 and penetrates through the front and the back is formed between the 2 resistance clapboards 102, a plurality of drain holes 103 which penetrate through the side wall are formed in the upper part of the protective shell main body 1, and inserting parts 101 which are used for being inserted into the seabed are formed in the lower ends of the two sides of the protective shell main body 1; the density of the protective shell main body 1 is at least more than 2 times of the water density, and a horn part with a large lower part and a small upper part is arranged between the insertion part 101 of the protective shell main body 1 and the resistance clapboard 102; the top end surface and two side surfaces of the protective shell main body 1 are in fillet transition;
when the anchor damage prevention device is installed, the anchor damage prevention device is hoisted along the direction of the submarine cable 3 to be arranged one by one in a sedimentation mode to protect the submarine cable 3, the middle part of the anchor damage prevention device is aligned with the submarine cable 3, a gap formed by 2 resistance partition plates 102 is opposite to the submarine cable 3, the inserting part 101 is inserted into the seabed by utilizing gravity until the resistance partition plates 102 support the seabed, the submarine cable 3 is covered by the protective shell main body 1, and the submarine cable 3 is located in a submarine cable protection cavity; during the process that the anchor chain 5 slowly pulls the boat anchor 4 to move forwards, the boat anchor 4 leaves the protection area of the submarine cable 3 through the horn part and the fillet of the anchor damage prevention device, so that the hooking damage of the boat anchor 4 to the submarine cable is prevented. In order to prevent the anchor from being hooked, the top of the anchor fixing device is provided with a round angle, the lower portion of the anchor fixing device is provided with a horn portion, an inserting portion 101 below the horn portion is deeply inserted into a seabed, the anchor cannot penetrate through the anchor damage preventing device through the inserting portion, the horn portion has a guiding effect, and the anchor can move upwards along the same direction in the moving process and cross the round angle. The horn part is big end up, can be in the inserting process, extrudees the seabed, improves the stability of inserting, and big end up's structure also makes the focus move down, and stability is better. The height ratio of the upper part to the lower part is 1-2, so that the stability after installation can be improved, the size and the cost are considered while the submarine cable is protected, the construction is convenient, and the alignment is easy.
To reduce the resistance to insertion into the sea floor, the end of the insertion portion 101 is wedge-shaped with its tip pointing downwards in cross-section. The wedge shape with the downward pointed end facilitates the insertion of the insertion part 101 into the seabed, and has small insertion resistance and high stability, so that the anchor damage prevention device can be stably and reliably deployed on the seabed.
To achieve better seafloor holding, the resistive baffles 102 are horizontally disposed. Simple structure, it is convenient to make, and the level sets up, and seabed bearing nature is good.
In order to improve the rollover protection capability, the lateral distance of the insertion portions 101 at both sides of the protective case body 1 is greater than that at both sides of the upper portion of the protective case body 1. The lower extreme distance is broad, can make and prevent that the anchor harms device disposes in the seabed more steadily, can effectively promote the protective capacities of turning on one's side.
In order to make the force stability good when water is supplied, in this example, the number of the drain holes 103 is 9 on each side of the protective case main body 1, and they are arranged at equal intervals in the longitudinal direction. The number of the drain holes 103 is large, the arrangement structure is uniform, and the stress stability of the anchor damage prevention device is good when water passes.
In order to reduce the resistance when the ship anchor 4 passes through the anchor, the top end surface and two side surfaces of the protective shell main body 1 are in fillet transition, and the fillet radius is 50mm. The resistance of the ship anchor 4 when passing through the anchor can be effectively reduced.
For the convenient hoist and mount installation of loop wheel machine, the top both sides of protective housing main part 1 are equipped with installation rings 2. The hoisting installation of the crane can be facilitated.
In order to realize the connection structure of the installation hanging ring 2, the round corners at two sides of the top end of the protective shell main body 1 are provided with inner and outer through process holes, two ends of the fixing pin 104 are fixed at the round corners at the front side and the rear side of the process holes, and the installation hanging ring 2 is externally sleeved on the fixing pin 104. Effectively realize the connection structure of installation rings 2.
In order to avoid being hooked by the anchor tip of the ship anchor 4, the diameters of the installation hoisting ring 2, the fabrication hole and the drain hole 103 are all smaller than the arc radius of the anchor tip of the ship anchor 4. Avoiding being hooked by the anchor tip of the ship anchor 4.
In order to obtain higher cost performance, the protective shell main body 1 and the resistance separation plate 102 are of a reinforced concrete integral casting structure, and the fixing pins 104 are formed by embedding and casting reinforcing steel bars. The reinforced concrete integral pouring structure is adopted, the structural strength is high, the gravity is large, the seawater corrosion resistance is good, the cost is low, and the cost performance is high.
When the anchor damage prevention device is installed, the anchor damage prevention device is hoisted along the direction of the submarine cable 3 to be arranged one by one in a sedimentation mode to protect the submarine cable 3, the submarine cable 3 is located at the position of the notch, the inserting portion 101 is inserted into the seabed through gravity to well cover the submarine cable 3, and during the sedimentation construction of the anchor damage prevention device, as the protective shell main body 1 penetrates front and back, and the side face is provided with a plurality of drain holes 103, seawater can stably enter the inner portion, the sedimentation stability is good, as the resistance partition plate 102 is supported on the seabed, excessive sedimentation cannot be caused, in the process that the anchor chain 5 slowly pulls the ship anchor 4 to move forwards, the top of the anchor damage prevention device supports the anchor chain 5, the ship anchor 4 is driven to anchor, and the ship anchor 4 automatically crosses the anchor damage prevention device to leave the submarine cable 3 protection area.
The device for preventing anchoring damage of submarine cables inserted in the sea floor, shown in the above fig. 1-2, is a specific embodiment of the present invention, and it has shown the substantial features and advantages of the present invention, and it is within the scope of the present invention to modify the shape, structure, etc. of the device equally according to the practical needs.
Claims (10)
1. An anchor damage preventing device for submarine cables, which is characterized in that: the marine cable protective shell comprises a protective shell main body (1) which is settled by utilizing the self gravity and has a U-shaped cross section with an opening at the lower end, wherein the protective shell main body (1) penetrates through the protective shell main body in the front-back direction, 2 anti-settling resistance clapboards (102) are arranged on the inner side of the lower part of the protective shell main body (1), the protective shell main body (1) is divided into an upper part and a lower part by the resistance clapboards (102), and a marine cable protective cavity for accommodating a marine cable is formed in the upper part; the lower part is a positioning seat for being inserted into the seabed; the height ratio of the upper part to the lower part is 1-2; a gap which is larger than the diameter of the submarine cable (3) and penetrates through the sea cable in the front-back direction is formed between the 2 resistance clapboards (102), a plurality of drain holes (103) which penetrate through the side wall are formed in the upper part of the protective shell main body (1), and inserting parts (101) which are used for being inserted into the sea bottom are formed in the lower ends of the two sides of the protective shell main body (1); the density of the protective shell main body (1) is at least more than 2 times of the water density, and a horn part with a large lower part and a small upper part is arranged between the insertion part (101) of the protective shell main body (1) and the resistance clapboard (102); the top end surface and two side surfaces of the protective shell main body (1) are in rounded transition;
when the anchor damage prevention device is installed, the anchor damage prevention device is hoisted along the direction of the submarine cable (3) to be arranged one by one in a sedimentation mode to protect the submarine cable (3), the middle part of the anchor damage prevention device is aligned to the submarine cable (3), a gap formed by 2 resistance partition plates (102) is opposite to the submarine cable (3), the inserting part (101) is inserted into the seabed by utilizing gravity until the resistance partition plates (102) are supported on the seabed, and the submarine cable (3) is covered by the protective shell main body (1) to ensure that the submarine cable (3) is positioned in a submarine cable protection cavity; in the process that the anchor chain (5) slowly pulls the ship anchor (4) to move forwards, the ship anchor (4) goes beyond the horn part and the round angle of the anchor damage prevention device and leaves the protection area of the submarine cable (3) so as to prevent the ship anchor (4) from hooking and damaging the submarine cable.
2. An anchor damage preventing device for submarine cables according to claim 1, wherein: the cross section of the end part of the insertion part (101) is in a wedge shape with a downward pointed end.
3. An anchor damage preventing device for submarine cables according to claim 1, wherein: the two resistance clapboards (102) are horizontally and symmetrically arranged.
4. An anchor damage preventing device for submarine cables according to claim 1, wherein: the transverse distance of the insertion parts (101) on the two sides of the protective shell main body (1) is greater than that on the two sides of the upper part of the protective shell main body (1).
5. An anchor damage preventing device for submarine cables according to claim 1, wherein: the number of the drain holes (103) on each side of the protective shell main body (1) is more than 7, and the drain holes are arranged at equal intervals in the longitudinal direction.
6. An anchor damage preventing device for submarine cables according to claim 1, wherein: the radius of the fillet at the fillet transition is R, and R is 40 mm-100 mm.
7. An anchor damage preventing device for submarine cables according to claim 6, wherein: the protective shell is characterized in that mounting rings (2) are arranged on two sides of the top end of the protective shell main body (1).
8. An anchor damage preventing device for submarine cables according to claim 7, wherein: the radius angle department of the top both sides of protective housing main part (1) be equipped with the fabrication hole that runs through inside and outside, the both ends of fixed pin (104) are fixed in the radius angle department of both sides around the fabrication hole, installation rings (2) overcoat in fixed pin (104).
9. An anchor damage preventing device for a sea cable inserted into the sea bottom according to claim 8, wherein: the diameters of the installation hoisting ring (2), the fabrication hole and the drain hole (103) are all smaller than the arc radius of the anchor tip of the ship anchor (4).
10. An anchor damage preventing device for a sea cable inserted into the sea bottom according to claim 9, wherein: the protective shell main body (1) and the resistance clapboard (102) are of a reinforced concrete integrated pouring structure, and the fixing pins (104) are formed by pouring embedded steel bars.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111165248.XA CN113937709B (en) | 2021-09-30 | 2021-09-30 | Submarine cable anchor damage prevention device inserted into seabed |
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| CN202111165248.XA CN113937709B (en) | 2021-09-30 | 2021-09-30 | Submarine cable anchor damage prevention device inserted into seabed |
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| CN113937709A CN113937709A (en) | 2022-01-14 |
| CN113937709B true CN113937709B (en) | 2023-01-03 |
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| CN113063453A (en) * | 2021-04-09 | 2021-07-02 | 国网河北省电力有限公司沧州供电分公司 | Submarine cable state monitoring and comprehensive online monitoring equipment |
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| CN208169822U (en) * | 2018-05-17 | 2018-11-30 | 中国石油工程建设有限公司 | A kind of anti-drag anchor damage device of bottom of shallow sea pipeline |
| CN210577503U (en) * | 2019-08-16 | 2020-05-19 | 百利（福建）建材有限公司 | Novel electric power protecting sleeve |
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2021
- 2021-09-30 CN CN202111165248.XA patent/CN113937709B/en active Active
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| JP2007288991A (en) * | 2006-04-13 | 2007-11-01 | Samsung Industry Co Ltd | Mattress block for protecting submarine cable |
| KR20090116488A (en) * | 2008-05-07 | 2009-11-11 | 한국전력공사 | Undersea cable protective cover |
| KR20150037294A (en) * | 2013-09-30 | 2015-04-08 | 한국전력공사 | Apparatus of protecting submarine cable |
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