CN220475376U - Submarine cable protection and burial depth real-time monitoring system - Google Patents
Submarine cable protection and burial depth real-time monitoring system Download PDFInfo
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- CN220475376U CN220475376U CN202320820248.7U CN202320820248U CN220475376U CN 220475376 U CN220475376 U CN 220475376U CN 202320820248 U CN202320820248 U CN 202320820248U CN 220475376 U CN220475376 U CN 220475376U
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Abstract
The utility model provides a submarine cable protection and burial depth real-time monitoring system, which is characterized in that a bending limiter is arranged on an exposed section of a submarine cable laid to an offshore wind turbine, and the real-time monitoring system comprises a protection section part, an operating state monitoring system and a warning floating body; the protection section part is internally provided with a protection channel matched with the bending limiter, the protection channel is provided with a cable protection cage with sectional rigidity, flexible transition sections are arranged between adjacent cable protection cages in a connecting mode, and meanwhile, the cable protection cage is provided with a limiting piece connected with the outer surface of the bending limiter. The utility model increases the mechanical strength of the sea cable protection of the exposed section through the cable protection cage, and can effectively reduce the free rolling condition of the sea cable and the bending limiter; and the warning floating body is used for warning the ship to go and descend to set the submarine cable.
Description
Technical Field
The utility model relates to the technical field of offshore wind power development, in particular to a submarine cable protection and burial depth real-time monitoring system.
Background
With the explosive development of the offshore wind farm, the damage of the submarine cable in the field occurs when the fan is stopped, so that the stability of the power system of the wind farm is reduced, and serious economic loss is caused. And more than 50% of submarine cable accidents occur near the wind turbine foundation because the submarine cable needs to extend out of the seabed near the foundation and then be led up to access the electrical equipment inside the foundation. Therefore, a section of submarine cable is necessarily exposed on the surface of the seabed near the foundation, the length of the exposed end is generally about 5-15m according to the requirement of the anti-scouring design of the foundation, and the length still tends to increase along with the influence of the whole displacement and the local scouring of the seabed. In engineering, a bending limiter or a bending limiter is generally adopted to protect an exposed section of submarine cable, but the following risks are still faced:
(1) For the wind field of the intertidal zone, the propeller of the fan operation and maintenance ship is easy to directly strike on the bending limiter and the sea cable in low tide, and the bending limiter is easy to break by a single layer. For more wind fields of the coming and going ships, the sea cable and the bending limiter are pulled by the anchor and trawl operation in the field, so that the bending limiter is broken, and the sea cable is damaged.
(2) With the increase of the length of the exposed end, the left-right swing amplitude of the submarine cable and the bending limiter is increased under the long-term sea condition, and finally the submarine cable and the bending limiter are worn by a hard seabed, especially the condition that the foundation is scoured by adopting a riprap.
(3) Meanwhile, the situation of difficult early warning exists, on one hand, the submarine cable is immersed in the seawater, the submarine cable running direction can not be accurately positioned by the passing ship, and the warning avoidance is more unoccupied. On the other hand, if the length of the exposed end of the submarine cable is increased, it is necessary to timely flush or add other protective material to the buried cable. However, the current submarine cable burying state can only be confirmed through periodic inspection, such as diver touch or three-dimensional sonar scanning, and the submarine cable burying state is high in cost and not timely fed back.
Therefore, when the exposed section submarine cable meets the conditions, the submarine cable is often damaged under the unknowing condition, the risk of relative damage is high, the occurrence of faults of fan shutdown is caused, and the power transmission stability of the wind power plant is affected.
Disclosure of Invention
The utility model aims to provide a real-time monitoring system which can provide protection for a submarine cable exposed section and provide warning for the submarine cable exposed section. For this purpose, the utility model adopts the following technical scheme:
a submarine cable protection and burial depth real-time monitoring system is characterized in that a bending limiter is arranged on an exposed section of a submarine cable laid to an offshore wind turbine, and the real-time monitoring system comprises a protection section part, an operating state monitoring system and a warning floating body; a protection channel matched with the bending limiter is formed in the protection section part, rigid cable protection cages are arranged on the protection channel in a sectional mode, flexible transition sections are arranged between adjacent cable protection cages in a connecting mode, and meanwhile limiting pieces matched with the outer surface of the bending limiter in a connecting mode are arranged on the cable protection cages, so that a movable protection state capable of deforming along with the bending limiter is formed; the running state monitoring system comprises a monitoring component and a signal transmitter which are arranged on the cable protection cage and the warning floating body in a split mode; meanwhile, a first cable chain is connected and arranged between the warning floating body and the cable protection cage, so that the warning floating body floats on the sea in a horizontal floating state.
Further: the cable protection cage comprises a plurality of hubs arranged along the laying direction of the bending limiter, and support tubes surrounding the periphery of the protection channel are connected between the adjacent hubs.
Further: the flexible transition section is provided with a second cable chain for connecting adjacent cable protection cages, and a connecting net is connected between the second cable chains so as to form a protection enclosure for the protection channel.
Further: the monitoring component is arranged in a point location area which is in contact with the seabed soil body on the cable protection cage.
Further: the outer surface of the hub is provided with a rolling-preventing limiting area.
Further: a connecting hole penetrating through the protection channel is formed in the hub; the limiting piece comprises a rod body which can be connected with the connecting hole in a matched mode, a locking piece is arranged on the rod body, the end portion of the locking piece is provided with a locking extrusion portion matched with the outer surface of the hub, and meanwhile, the end portion of the rod body is provided with a clamping plate matched with the bending limiter.
Further: the warning floating body is internally reserved with a storage space, a signal collector is placed in the storage space, and a signal line is connected between the signal collector and the monitoring component.
Further: the solar cell panel is paved on the upper surface of the warning floating body, and a storage battery connected with the solar cell panel is arranged in the warning floating body so as to supply power to the running state monitoring system.
Further: an anti-collision fender is arranged around the warning floating body, and a pontoon is arranged at the bottom of the warning floating body.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model increases the mechanical strength of the sea cable protection of the exposed section through the cable protection cage, and can effectively reduce the free rolling condition of the sea cable and the bending limiter; the warning floating body warns the ship to go and go to the submarine cable, and the avoidance is noted; in addition, the operation state monitoring system of the submarine cable burial depth condition monitors and reminds an operation and maintenance team to timely process the submarine cable at the exposed section, so that the integrity and damage prevention condition of the submarine cable at the exposed section and the bending limiter are further ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic three-dimensional view of the cable protective cage of the present utility model;
FIG. 3 is a schematic view of a limiting member according to the present utility model;
FIG. 4 is a schematic diagram of the structure of the warning floating body according to the present utility model;
fig. 5 is a schematic structural view of the solar panel of the present utility model.
The marks in the drawings are: the cable protection cage 1, the hub 12, the connection hole 121, the limiting area 122, the support tube 13, the limiting piece 14, the locking piece 141, the rod body 142, the clamping plate 143, the operation state monitoring system 2, the monitoring component 21, the signal line 22, the signal collector 23, the signal emitter 24, the solar panel 25, the storage battery 26, the solar bracket 27, the warning floating body 3, the storage space 31, the pontoon 32, the anti-collision fender 33, the first cable 34, the peripheral cable 341, the central cable 342 and the bending limiter 4.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.
As shown in fig. 1-5, a submarine cable protection and burial depth real-time monitoring system is provided with a bending limiter 4 on an exposed section of a submarine cable laid to an offshore wind turbine, and comprises a protection section part, an operation state monitoring system 2 and a warning floating body 3; a protection channel matched with the bending limiter 4 is formed in the protection section part, rigid cable protection cages 1 are arranged on the protection channel in a segmented mode, flexible transition sections are arranged between adjacent cable protection cages 1 in a connecting mode, and meanwhile limiting pieces 14 matched with the outer surface of the bending limiter 4 in a connecting mode are arranged on the cable protection cages 1, so that a movable protection state capable of deforming along with the bending limiter 4 is formed; the running state monitoring system 2 comprises a monitoring component 21 and a signal transmitter 24 which are arranged on the cable protection cage 1 and the warning floating body 3 in a split mode; meanwhile, a first cable 34 is connected and arranged between the warning floating body 3 and the cable protection cage 1, so that the warning floating body 3 floats on the sea in a horizontal floating state.
As shown in fig. 1-2, in particular, the cable protection cage 1 comprises a plurality of hubs 12 arranged in the direction of the laying of the bend limiter 4 and between adjacent hubs 12 are connected support tubes 13 around the periphery of the protection channel.
Wherein the outer surface of the hub 12 is provided with a rolling-preventing restriction zone 122.
In this embodiment, the length of the protection segment portion visual cable and the bending limiter 4 are finalized. The number of hubs 12 is preferably two, at both ends of the cable protection cage 1, while the restraining areas 122 of the outer surface of the hubs 12 are provided with a plurality of mutually connected tangential surfaces, and preferably form a regular hexagonal shape. The support tube 13 may be a steel tube and the support tube 13 is preferably disposed at the intersection of the adjacent sides of the end face of the hexagonal hub 12 (as shown in fig. 2).
As shown in fig. 1, the flexible transition section is provided with a second cable chain 15 for connecting the adjacent cable protection cages 1, and a connecting net 16 is connected between the second cable chains 15 to form a protection channel enclosure.
In this embodiment, the second cable 15 may be a steel cable, and the second cable 15 may be arranged in plurality so as to surround the end surfaces between the adjacent hubs 12. While the connecting net 16 may be a wire net for connection of the adjacent second links 15 and provides protection for the bend limiter 4 in the protection channel.
As shown in fig. 3, specifically, a connection hole 121 penetrating the protection channel is formed in the hub 12; the limiting member 14 includes a rod body 142 capable of being connected to and matched with the connecting hole 121, a locking member 141 is disposed on the rod body 142, a locking extrusion portion matched with the outer surface of the hub 12 is disposed at the end of the locking member 141, and a clamping plate 143 matched with the bending limiter 4 is disposed at the end of the rod body 142.
In this embodiment, the connecting holes 121 are formed on the outer surface of each side of the hexagonal hub 12, and the connecting holes 121 on the outer surface of each side are preferably arranged at intervals along the extending direction of the cable, and are provided with two rod bodies 142, and the two rod bodies 142 are jointly connected with the arc-shaped clamping plate 143 on the same side which forms extrusion on the outer surface of the bending limiter 4, so as to ensure the limiting effect on the bending limiter 4; meanwhile, the rod body 142 is preferably a screw rod, and is in threaded connection with the connecting hole 121. The locking member 141 adopts a nut matched with the screw, and the area of the locking extrusion part can be increased by welding a plate around the outer surface of the nut, so that a better locking effect is achieved.
The embodiment increases the strength of the protection of the exposed section submarine cable by protecting the section part. Meanwhile, the hexagonal cable protection cage 1 with the protrusions can prevent the propellers from directly striking on the submarine cable and the bending limiter 4, the cable protection cage 1 increases the interaction between the submarine cable and the seabed, and plays a certain role in protecting against anchoring and fishing net dragging.
At the same time, the bend limiter 4 and the seabed are no longer in direct contact, reducing the risk of wear of the bend limiter 4 and the sea cable. And because the cross section of the cable protection cage 1 is hexagonal, free rolling of the submarine cable and the bending limiter 4 can be effectively reduced.
As shown in fig. 1, the monitoring component 21 is arranged in a point area on the cable protection cage 1, which is in contact with the seabed soil mass.
In this embodiment, the monitoring component 21 preferably adopts a TDR probe to monitor the contact condition between the cable protection cage 1 and the soil body, and is provided with a plurality of TDR probes, one of which is fixed at the bottom of the cable protection cage 1, and the other of which is fixed at the corresponding height of the cable protection cage 1 according to the requirement of the sea cable burial depth, so that the TDR probe is located on the shallow surface of the seabed and is preferably 20cm away from the seabed surface when the sea cable is installed. Therefore, the sea cable is monitored in real time, and the operation and maintenance team is reminded of burying the sea cable at the exposed section in time when the sea cable is exposed.
The TDR probe measures propagation speeds of electromagnetic waves in different media through a time domain reflection principle, so that the property of the media is judged, and whether a submarine cable is positioned at the bottom of a seabed (at the moment, data can show soil body conductivity) or is exposed at the surface of the seabed (at the moment, the data show seawater conductivity) is effectively distinguished. The probe may be directly connected to a signal acquisition microgrid comprising a signal acquisition 23 and a signal transmitter 24, and equipped with a corresponding power supply system.
As shown in fig. 4, a storage space 31 is reserved in the warning floating body 3, a signal collector 23 is placed in the storage space 31, and a signal line 22 is connected between the signal collector 23 and the monitoring component 21. The signal acquisition micro-grid is connected with the monitoring component 21 through a signal wire 22, and the signal acquisition device 23 is used for transmitting data acquired by cable to the outside through a signal transmitter 24 or integrating the data to the fan side and uniformly transmitting the data to the control end through an optical fiber.
As shown in fig. 4 to 5, the power supply system comprises a solar panel 25 laid on the upper surface of the warning float 3, and a storage battery 26 connected with the solar panel 25 is arranged in the warning float 3 to supply power to the operation state monitoring system 2. Meanwhile, a solar bracket 27 connected with the top end of the warning floating body 3 is sleeved on the solar panel 25.
As shown in fig. 1, a fender 33 is arranged around the warning float 3, and a pontoon 32 is arranged at the bottom of the warning float 3.
It should be noted that, the number of the warning floats 3 is arranged according to the length of the integral protection section, and each warning float 3 is arranged at intervals, and can be connected to the cable protection cage 1 at the corresponding position area of the seabed bottom through the first cable 34.
The first cable chains 34 are arranged below the warning floating body 3 and connected with the cable protection cage 1, the first cable chains 34 comprise peripheral steel cables 341 and central steel cables 342, four peripheral steel cables 341 are preferably arranged to respectively connect the periphery of the cable protection cage 1, and the other ends of the peripheral steel cables 341 are connected to the opposite positions of the warning floating body 3, so that the connection strength between the warning floating body 3 and the cable protection cage 1 is ensured, the movable range of the warning floating body 3 on the sea surface is further limited, and more accurate prompts are provided for ships to go and go; and both ends of the central steel rope 342 are respectively connected to the top support tube 13 of the cable protection cage 1 and the central position of the bottom of the warning float 3, and the signal wire 22 can be connected in both directions by winding on the central steel rope 342.
In this embodiment, the warning floating body 3 is preferably a square floating body with a steel structure, and the floating body 32 is arranged below the storage space 31 to ensure that the warning floating body 3 can still operate normally under certain sea conditions. Meanwhile, the surface of the whole warning floating body 3 is brushed with bright anti-corrosion paint and is provided with a navigation mark lamp, so that the warning effect is achieved at the same time of corrosion prevention.
Referring to fig. 1 to 5, when the real-time monitoring system is matched for submarine installation and offshore warning of submarine cables, the specific construction steps are as follows:
s1: laying a sufficient amount of submarine cables on the side of a fan, installing a bending limiter 4 on the submarine cables Duan Hailan, determining the installation position of the cable protection cage 1 according to the length required by the submarine cables to land on the fan, and installing the cable protection cage 1;
s11: the cable protection cage 1 is sleeved outside the bending limiter 4 and is supported by a jack, and a limiting piece 14 (shown in fig. 3) is inserted from six sides, so that the integral connection installation of the protection section part is completed;
s2: after the submarine cable is pulled to the side of the wind turbine and the protection section is completely launched, a diver is arranged to dive and use a high-pressure water gun to flush, so that all monitoring components 21 are ensured to be embedded into soil and keep enough space with the surface side of the soil, and meanwhile, a signal wire 22 which needs to be connected with a warning floating body 3, a central steel cable 342 and peripheral steel cables 341 are fixed on a cable protection cage 1 in advance and led out, and the diver is brought out of the water surface to wait to be connected with the warning floating body 3;
s3: the warning floating body 3 is assembled on the deck of the construction ship, then the corresponding point needed by prediction is put in through a small shipborne crane, the hook is loosened after a diver connects with the central steel cable 342, so that the warning floating body 3 is put in water, and after the diver connects the signal line 22 with the signal collector 23, the rest peripheral steel cable 341 is continuously connected, so that the warning floating body 3 is connected with the cable protection cage 1;
s4: the central steel rope 342 and the peripheral steel rope 341 are adjusted to make the warning floating body 3 in a horizontal floating state, then the central steel rope 342 and/or the peripheral steel rope 341 are gradually tightened, the overlong signal wire 22 is fixed on the side of the warning floating body 3, and meanwhile, the waterproof measure of the warning floating body 3 is made.
The above embodiment is only one preferred technical solution of the present utility model, and it should be understood by those skilled in the art that modifications and substitutions can be made to the technical solution or parameters in the embodiment without departing from the principle and essence of the present utility model, and all the modifications and substitutions are covered in the protection scope of the present utility model.
Claims (9)
1. Submarine cable protection and burial depth real-time monitoring system sets up crooked limiter (4) on submarine cable lays to the exposure section of offshore wind turbine, its characterized in that: the real-time monitoring system comprises a protection section part, an operating state monitoring system (2) and a warning floating body (3);
a protection channel matched with the bending limiter (4) is formed in the protection section part, rigid cable protection cages (1) are arranged on the protection channel in a sectional mode, flexible transition sections are arranged between adjacent cable protection cages (1) in a connecting mode, and meanwhile limiting pieces (14) matched with the outer surfaces of the bending limiter (4) in a connecting mode are arranged on the cable protection cages (1);
the running state monitoring system (2) comprises a monitoring component (21) and a signal transmitter (24) which are arranged on the cable protection cage (1) and the warning floating body (3) in a separated mode; meanwhile, a first cable chain (34) is connected and arranged between the warning floating body (3) and the cable protection cage (1), so that the warning floating body (3) floats on the sea in a horizontal floating state.
2. The submarine cable protection and burial depth real-time monitoring system according to claim 1, wherein: the cable protection cage (1) comprises a plurality of hubs (12) arranged along the laying direction of the bending limiter (4), and support tubes (13) surrounding the periphery of the protection channel are connected between the adjacent hubs (12).
3. The submarine cable protection and burial depth real-time monitoring system according to claim 1, wherein: the flexible transition section is provided with a second cable chain (15) for connecting adjacent cable protection cages (1), and a connecting net (16) is connected between the second cable chains (15) so as to form a protection for the protection channel.
4. The submarine cable protection and burial depth real-time monitoring system according to claim 1, wherein: the monitoring component (21) is arranged in a point location area which is contacted with the seabed soil body on the cable protection cage (1).
5. A submarine cable protection and burial depth real-time monitoring system according to claim 2, wherein: the outer surface of the hub (12) is provided with a rolling-preventing limiting zone (122).
6. A submarine cable protection and burial depth real-time monitoring system according to claim 2, wherein: a connecting hole (121) penetrating through the protection channel is formed in the hub (12); the limiting piece (14) comprises a rod body (142) which can be connected and matched with the connecting hole (121), a locking piece (141) is arranged on the rod body (142), the end part of the locking piece (141) is provided with a locking extrusion part matched with the outer surface of the hub (12), and meanwhile, the end part of the rod body (142) is provided with a clamping plate (143) matched with the bending limiter (4).
7. The submarine cable protection and burial depth real-time monitoring system according to claim 1, wherein: a storage space (31) is reserved in the warning floating body (3), a signal collector (23) is placed in the storage space (31), and a signal line (22) is connected between the signal collector (23) and the monitoring component (21).
8. The submarine cable protection and burial depth real-time monitoring system according to claim 1, wherein: the solar cell panel (25) is paved on the upper surface of the warning floating body (3), and a storage battery (26) connected with the solar cell panel (25) is arranged in the warning floating body (3) so as to supply power to the running state monitoring system (2).
9. The submarine cable protection and burial depth real-time monitoring system according to claim 1, wherein: an anti-collision fender (33) is arranged around the warning floating body (3), and a pontoon (32) is arranged at the bottom of the warning floating body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320820248.7U CN220475376U (en) | 2023-04-07 | 2023-04-07 | Submarine cable protection and burial depth real-time monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320820248.7U CN220475376U (en) | 2023-04-07 | 2023-04-07 | Submarine cable protection and burial depth real-time monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN220475376U true CN220475376U (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320820248.7U Active CN220475376U (en) | 2023-04-07 | 2023-04-07 | Submarine cable protection and burial depth real-time monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220475376U (en) |
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2023
- 2023-04-07 CN CN202320820248.7U patent/CN220475376U/en active Active
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