CN216056258U

CN216056258U - Inserted anchor damage prevention device for submarine cable

Info

Publication number: CN216056258U
Application number: CN202122405014.XU
Authority: CN
Inventors: 闫循平; 钱钢; 丛贇; 郑新龙; 康纬; 李世强; 胡文侃; 林晓波; 胡凯; 张引贤
Original assignee: Zhejiang Zhoushan Institute Of Oceanic Electric Power Transmission Co ltd; Zhoushan Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Current assignee: Zhejiang Zhoushan Institute Of Oceanic Electric Power Transmission Co ltd; Zhoushan Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-15
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a plug-in anchor damage prevention device for a submarine cable, 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 marine cable anti-settling protective shell 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, a gap larger than the diameter of a submarine cable is formed between the 2 resistance clapboards, a drain hole is formed in the upper part of the protective shell main body, and inserting parts used for being inserted into the sea bottom are arranged at the lower ends of two sides of the protective shell main body. The top of the anchor damage prevention device supports the anchor chain, so that the ship anchor is driven to anchor, and the ship anchor automatically crosses the anchor damage prevention device to leave a submarine cable protection area.

Description

Inserted anchor damage prevention device for submarine cable

Technical Field

The utility model relates to the field of submarine cable protection devices, in particular to a plug-in submarine cable anchor damage prevention device.

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 effectively avoid the damage of the ship anchor which may be generated at any time to ensure the stable operation of the networked power supply.

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 susceptible to hydrology and has little effect on the hooking protection of 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.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved and the technical task provided by the utility model are to perfect and improve the prior technical scheme, and provide a plug-in submarine cable anchor damage prevention device to prevent the ship anchor from hooking and damaging the submarine cable, so as to achieve the purpose of long-term submarine cable protection. Therefore, the utility model adopts the following technical scheme.

The utility model provides an anchor damage device is prevented to bayonet submarine cable, includes the protective housing main part of the lower extreme open-ended U-shaped cross section that utilizes self gravity to subside, runs through around the protective housing main part, the lower part inboard of protective housing main part be equipped with 2 and prevent the resistance baffle that subsides, 2 break through around for being greater than the submarine cable diameter between the resistance baffle, the upper portion of protective housing main part be equipped with a plurality of wash ports that run through the lateral wall, the both sides lower extreme of protective housing main part be equipped with the portion of inserting that is used for inserting the seabed. 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 wedge-shaped 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 resistance baffle is horizontally arranged. Simple structure, convenient manufacture and good bearing performance.

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 top end face and the two side faces of the protective shell main body are in rounded transition. The resistance of the ship anchor when passing through the anchor can be effectively reduced.

As a preferable technical means: and mounting rings are arranged on two sides of the top end of the protective shell main body. The hoisting installation of the crane can be facilitated.

As a preferable technical means: the round 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 round 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 embedding and pouring 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, 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 utility model for preventing anchor damage.

In the figure: 1. a protective case body; 2. installing a hanging ring; 3. a sea cable; 4. a boat 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 utility model is further explained in detail by combining the drawings in the specification.

As shown in fig. 1-2, an insertion type submarine cable anchor damage prevention device comprises a protective shell body 1 with a U-shaped cross section and an opening at the lower end, wherein the protective shell body 1 is penetrated through in the front-back direction, 2 anti-settling resistance separation plates 102 are arranged on the inner side of the lower part of the protective shell body 1, a front-back penetrating gap larger than the diameter of a submarine cable 3 is formed between the 2 resistance separation plates 102, a drain hole 103 penetrating through the side wall is formed in the upper part of the protective shell body 1, and insertion parts 101 for inserting into the seabed are arranged at the lower ends of two sides of the protective shell body 1.

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, has small insertion resistance and high stability, and enables the anchor damage prevention device to 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 on both sides of the protective shell body 1 is greater than that on both sides of the upper portion of the protective shell 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 rounded transition. 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 lifting ring 2, the fabrication hole and the water drainage 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 clapboard 102 adopt a reinforced concrete integrated pouring structure, and the fixing pin 104 is 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, 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 way to protect the submarine cable 3, the submarine cable 3 is positioned at the gap part, the inserting part 101 is inserted into the seabed by utilizing gravity to well cover the submarine cable 3, when the anchor damage prevention device is constructed in a sedimentation way, because the protective shell main body 1 penetrates front and back, and the side surface is provided with a plurality of drain holes 103, seawater can stably enter the protective shell main body, the sedimentation stability is good, because the resistance clapboard 102 is supported on the seabed, excessive sedimentation cannot be caused, when 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, thereby driving the ship anchor 4 to anchor and automatically cross the anchor damage prevention device to leave the protection area of the submarine cable 3, the device simple structure, reliable and stable can effectively prevent ship anchor 4 to the damage of linking with of submarine cable, realizes long-term 3 protections of submarine cable.

The insertion type sea cable anchoring device shown in fig. 1-2 is a specific embodiment of the present invention, which has embodied the essential features and advantages of the present invention, and it is within the protection scope of the present invention to modify the shape, structure, etc. equally according to the actual use requirement and with the teaching of the present invention.

Claims

1. The utility model provides a bayonet sea cable prevents anchor evil device which characterized in that: the marine submarine protective casing comprises a protective casing main body (1) with a U-shaped cross section, wherein the lower end of the protective casing main body is provided with a settlement opening, the protective casing main body (1) penetrates through the protective casing main body in the front-back direction, 2 anti-settlement resistance separation plates (102) are arranged on the inner side of the lower portion of the protective casing main body (1), a front-back penetrating notch larger than the diameter of a submarine cable (3) is formed between the 2 resistance separation plates (102), a plurality of drain holes (103) penetrating through the side wall are formed in the upper portion of the protective casing main body (1), and inserting portions (101) used for being inserted into the seabed are arranged at the lower ends of two sides of the protective casing main body (1).

2. An insertion sea cable anchor damage prevention device 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 insertion sea cable anchor damage prevention device according to claim 1, wherein: the resistance baffle (102) is horizontally arranged.

4. An insertion sea cable anchor damage prevention device 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 insertion sea cable anchor damage prevention device 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 insertion sea cable anchor damage prevention device according to claim 1, wherein: the top end face and the two side faces of the protective shell main body (1) are in rounded transition.

7. An insertion sea cable anchor damage prevention device 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 insertion sea cable anchor damage prevention device according to claim 7, wherein: the round angle department of the top both sides of protective housing main part (1) be equipped with inside and outside process hole that runs through, the round angle department of both sides around the process hole is fixed in at the both ends of fixed pin (104), installation rings (2) overcoat in fixed pin (104).

9. An insertion sea cable anchor damage prevention device 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 insertion sea cable anchor damage prevention device 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.