CN217601330U

CN217601330U - Floating offshore installation

Info

Publication number: CN217601330U
Application number: CN202221364397.9U
Authority: CN
Inventors: 张建民; 王法承; 赵杨
Original assignee: China Academy Of Ocean Engineering Qingdao
Current assignee: China Academy Of Ocean Engineering Qingdao
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-10-18
Anticipated expiration: 2032-06-02

Abstract

The floating offshore facility provided by the embodiment of the disclosure comprises: the floating breakwater comprises a plurality of floating body units which are sequentially connected through main cables, and the floating body units are provided with wave dissipating holes; a curtain type barrier net which is hung on the main cable and is unfolded underwater; the detection unit is arranged on the curtain type barrier net and is used for detecting the damage of the curtain type barrier net and the invasion condition of foreign matters; the wave energy power generation device is connected with the main cable and is used for converting wave energy into electric energy and then supplying power to a load; and a positioning system for mooring the wave energy power generation device to a fixed sea area. The embodiment of the disclosure integrates the functions of floating wave prevention, wave energy power generation and blocking nets, and all parts are mutually benefited, so that an economical and feasible solution is provided for comprehensively realizing wave elimination, blocking protection and wave energy power generation of offshore engineering.

Description

Floating offshore installation

Technical Field

The disclosure belongs to the technical field of ocean engineering, and particularly relates to a floating offshore facility.

Background

Sea waves have an erosion effect on coastal and offshore engineering structures, and affect the safety of relevant ocean resource development and utilization links such as port operation, ocean engineering construction operation, ocean cultivation and the like. In addition, wave energy in the ocean is a potential green energy, resource utilization is carried out on the wave energy, and related research on power generation by utilizing the wave energy is also continuously promoted. In addition, the coast and the offshore important structures may be affected by marine organisms (such as enteromorpha), marine foreign matters and military invasion (such as frogman), and a large amount of intercepting and protecting requirements potentially exist.

At present, aiming at the three problems, most of the three problems are independently designed aiming at wave prevention, wave energy power generation and underwater protection, and the integration and the economy are lacked.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to solving at least one of the problems of the prior art.

Therefore, the floating offshore facility integrating wave prevention, wave energy power generation and underwater protection provided by the embodiment of the disclosure comprises:

the floating breakwater comprises a plurality of floating body units which are sequentially connected through main cables, and the floating body units are provided with wave dissipating holes;

a curtain-type barrier net carried on the main rope and expanded underwater;

the detection unit comprises an active detection sensor and/or a passive detection sensor which are arranged on the curtain type barrier net and used for detecting the damage of the curtain type barrier net and the invasion condition of foreign matters;

the wave energy power generation device is connected with the main cable through a connector and used for converting wave energy into electric energy and then supplying power to a load, and the connector is configured to connect or disconnect the wave energy power generation device with the main cable according to the tension between the wave energy power generation device and the main cable; and

and the positioning system is connected with the wave energy power generation device and is used for mooring the wave energy power generation device in a fixed sea area.

The floating offshore facility provided by the embodiment of the disclosure has the following special and beneficial effects:

the floating offshore facility provided by the embodiment of the disclosure provides a full-time self-powered comprehensive defense system which can effectively defend damages, surface impacts and the like of Underwater attacks and integrates detection, alarm, interception and positioning, can monitor small targets such as low, medium and low air speed, small and slow water surface and the like in real time, can intelligently identify Underwater frogs, AUVs (Autonomous Underwater vehicles), UUVs (Unmanned Underwater vehicles), can accurately position and effectively block ships, frogs, AUVs, UUVs and the like on the water surface, and can realize Autonomous energy supply. The embodiment of the disclosure integrates the functions of floating wave prevention, wave energy power generation and blocking nets, and all parts are mutually benefited, so that an economical and feasible solution is provided for comprehensively realizing wave elimination, blocking protection and wave energy power generation of offshore engineering.

In some embodiments, the floating body unit comprises two side plates arranged at intervals along the direction of a main cable, and a plurality of cross-shaped floating bodies and a plurality of slave cables arranged between the two side plates; the centers of the two side plates are respectively provided with a first main cable hole for the main cable to pass through; the auxiliary cables positioned between the two side plates are arranged in an array form and are parallel to the main cables, and the end parts of the auxiliary cables are respectively fixed on the corresponding side plates; the end parts of the four support arms of each cross-shaped floating body are provided with cable-passing holes for the passing of the secondary cables, and the wave-dissipating holes are formed between the adjacent cross-shaped floating bodies.

In some embodiments, a first pre-stress is applied to each of the secondary cables.

In some embodiments, a second pre-stress is applied to the main cable.

In other embodiments, the floating body unit comprises a plurality of cross-shaped floating bodies, a second main cable hole for the main cable to pass through is formed in the center of each cross-shaped floating body, and the wave dissipation holes are formed between the adjacent cross-shaped floating bodies.

In some embodiments, a buffer is provided on the main cable.

In some embodiments, the curtain barrier net comprises a net body mounted on the main rope.

In some embodiments, the mesh body is more than 2 times the length of the main cable in the main cable direction.

In some embodiments, the curtain barrier net further comprises a counterweight structure disposed at the bottom of the net body.

In some embodiments, the active detection sensors employ sonar sensors, piezoelectric crystal sensors, olfactory sensors, and thermal radiation sensors.

In some embodiments, the passive detection sensors employ long-distance distributed acoustic detectors arranged at equal intervals in the direction of deployment of the curtain barrier net.

In some embodiments, the positioning system employs an anchoring system or a mooring system.

Drawings

Fig. 1 is a schematic view of the overall structure of a floating offshore facility provided in embodiment 1 of the present disclosure.

Fig. 2 is a schematic structural view of a buoyant unit in the floating offshore facility shown in fig. 1.

Fig. 3 (a) and (b) are respectively a schematic structural view of a combination body formed by a plurality of cross-shaped floating bodies and a single cross-shaped floating body in the floating body unit shown in fig. 2.

Fig. 4 is a schematic view of the structure of the connector in the floating offshore facility shown in fig. 1.

Fig. 5 is a schematic view of the mooring system in the floating offshore unit shown in fig. 1.

Fig. 6 is a schematic view of the overall structure of the floating offshore facility provided in embodiment 2 of the present disclosure.

Fig. 7 is a schematic structural view of a buoyant unit in the floating offshore facility shown in fig. 6.

Fig. 8 and 9 are schematic overall structural diagrams of floating offshore facilities provided for embodiments 3 and 4 of the present disclosure, respectively.

Reference numerals:

100-floating breakwater, 110-main cable, 111-buffer, 120-floating body unit, 121-wave-dissipating hole, 122-cross floating body, 1221-second main cable hole, 1222-slave cable hole, 123-slave cable, 124-side plate, 1241-first main cable hole, 125-riveting structure;

200-curtain barrier net, 210-net body, 220-counterweight structure;

300-detection unit, 310-active detection sensor, 320-passive detection sensor;

400-wave power generation;

500-positioning system, 510-chain line, 520-block, 530-anchor chain, 540-anchor body;

600-connector, 610-housing, 620-connecting ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.

Referring to fig. 1, a floating offshore facility provided in embodiment 1 of the present disclosure includes:

the floating breakwater 100, the floating breakwater 100 includes a plurality of buoyant units 120 connected in sequence by main cables 110, the buoyant units 120 have wave-breaking holes;

a curtain type barrier net 200, wherein the curtain type barrier net 200 is hung on the main cable 110 and is unfolded underwater;

the detection unit 300, the detection unit 300 comprises an active detection sensor 310 and/or a passive detection sensor 320 which are/is arranged on the curtain barrier net 200 and used for detecting the damage and the foreign matter invasion condition of the curtain barrier net 200;

the wave energy power generation device 400 is connected with the main cable 110 through the connector 600 and used for converting wave energy into electric energy and supplying power to a load, and the connector 600 is configured to connect or disconnect the wave energy power generation device 400 with the main cable 110 according to the tension between the wave energy power generation device 400 and the main cable 110; and

and the positioning system 500, the positioning system 500 is connected with the wave energy power generation device 400, and is used for mooring the wave energy power generation device 400 in a fixed sea area.

In some embodiments, the floating offshore facility provided in embodiment 1 of the present disclosure has the same structure for each buoyant unit 120, and one buoyant unit 120 will be described as an example. Referring to fig. 2 and 3 (a) and (b), the buoy unit 120 may have an inverted trapezoid shape as a whole, including two side plates 124 disposed at intervals in a main cable direction, and a plurality of cross-shaped buoys 122 and a plurality of slave cables 123 disposed between the two side plates 124. Two side boards 124 are the trapezoidal form of falling, and the center department of each side board 124 sets up the first main cable hole 1241 that supplies main cable 110 to pass respectively, and the follow cable 123 that is located between two side boards 124 is arranged and all is parallel with main cable 110 for the array form, and the tip of each follow cable 123 is fixed in on the corresponding side board 124 through riveting structure 125 respectively. The cable holes 1222 are opened at the end of the four arms of each cross float 122 for the cables 123 to pass through, and wave-dissipating holes 121 are formed between the adjacent cross floats 122. The buoyant unit 120 is used to provide buoyancy for the floating offshore facility of the disclosed embodiment, and its porous medium configuration rich in wave-breaking holes can play a role in wave breaking and wave protection.

Further, the cross-shaped floating body 122 can be made of polyurea olefin and the like, and the size is about 200mm-1000mm; the height of the floating body unit 120 can be 1000mm-4000mm, and the width can be adjusted according to requirements; the main cable 110 and the secondary cable 123 may be cables made of high molecular weight polyethylene fibers; the side panel 124 may be made of tough polymer polyethylene or the like.

Further, the outermost side of the main cable 110 is fixed to the wave energy generation device 400 connected to the positioning system 500. The main ropes 110 are provided with buffering members 111, which may be made of rubber, to buffer the collision of the wave power generation devices 400 and the buoyant units 120 under severe sea conditions, and to limit the displacement of the buoyant units 120 along the main ropes 110.

Further, a first prestress is applied to each slave cable 123 to compact the cross-shaped buoyant body 122 in the slave cable direction, increase the overall rigidity of the buoyant body unit 120, and reduce the relative displacement of each component, so that the pore structure of the buoyant body unit 120 is relatively stable. Optionally, a second pre-stress is applied to the main cable 110 to avoid the barrier net from being damaged by excessive stress in extreme environments.

In some embodiments, referring to fig. 1, a curtain barrier net 200 includes a net body 210 suspended on a main rope 110, the net body 210 being more than 2 times the length of the main rope in the direction of laying of the main rope 110, thereby being capable of assuming a curtain-like configuration to avoid damage due to over-tensioning. When the dead weight of the net body 210 is not enough to resist the buoyancy of seawater, the bottom of the net body 210 is further provided with a counterweight structure 220 to ensure that the net body 210 can be opened in the vertical direction, so that the underwater protection function is achieved, and a certain wave-breaking capacity can be provided.

In some embodiments, referring to fig. 1, the detection unit 300 comprises an active detection sensor 310 and/or a passive detection sensor 320 arranged on the curtain barrier net 200. Wherein, active detection sensor 310 is used for monitoring whether have foreign matter or frogman to approach, can adopt sonar sensor, piezoelectric crystal sensor, olfactory sensor (be used for surveying naval mine or explosive) and heat radiation sensor etc.. The passive detection sensor 320 adopts a long-distance distributed sound wave detector (such as an optical fiber sensor) arranged at equal intervals along the warp direction of the net body 210, and forms a monitoring system similar to an underwater vibration signal of a source array control radar through receiving a plurality of groups of differential signals, so that the intrusion target is positioned and monitored in real time, and the passive detection sensor has high economy, reliability and anti-interference capability. The optical fiber sensor is arranged on the net body 210, so that the concealment of the optical fiber sensor can be improved; meanwhile, the number and the area of the optical fibers as detection units (similar to an antenna of a television) can be greatly increased. When small targets (such as frogmans and underwater creatures) are detected, a single detection unit is difficult to distinguish the targets (frogmans) and the noise (underwater creatures), but the small targets can be identified by arranging a large area (such as an area of 10 square meters to 100 square meters on the net body 210) and by demodulating a single small target after acquiring information by aiming at multiple sensors, namely arranging a plurality of optical fiber sensors in a long distance.

In some embodiments, the wave energy generation device 400 is a floating structure, and the wave energy generation device 400 can provide additional buoyancy in addition to converting wave energy into electric energy. An L-shaped seawater flow channel, a buoyancy chamber and an air flow channel are formed in the wave power generation device 400; the L-shaped seawater flow channel comprises a horizontal section flow channel and a vertical section flow channel which are communicated with each other, the top wall of the horizontal section flow channel is a horizontal plane, the bottom wall of the horizontal section flow channel is a sawtooth surface, the joint between the top wall of the horizontal section flow channel and the side wall of the vertical section flow channel is in 1/4 circular arc transition, and an inclined triangular prism space is formed between the bottom wall of the horizontal section flow channel and the side wall of the vertical section flow channel and is used as an auxiliary buoyancy cabin; a seawater runner port is arranged at one end of the horizontal segment runner, which is far away from the vertical segment runner, the air runner is communicated and arranged at the top of the vertical segment runner, an air runner port is arranged at the tail end of the air runner, and a pressure regulating valve group is arranged on the air runner; the air turbine set is installed at the air runner port and is connected with the generator (the specific implementation mode and functions of all parts in the wave power generation device 400 can be seen in the patent application 202110180864.6).

Further, referring to fig. 4, wave energy generation devices 400 are connected to main lines 110 via connectors 600, so that when the floating offshore facility is exposed to severe weather (e.g., typhoons, hurricanes, etc.), wave energy generation devices 400 are prevented from breaking main lines 110 due to large relative displacement. The connector 600 is configured to connect or disconnect the wave energy generation device 400 and the main line 110 according to the magnitude of the pulling force between the wave energy generation device 400 and the main line 110. Specifically, the connector 600 includes a metal shell 610 and a connection ring 620. The connecting cable between the main cable 110 and the wave energy power generation device 400 is tightened and clamped in the metal housing 610 through the connecting ring 620. When the friction between the attachment ring 620 and the cable is not sufficient to resist the tension in the cable, the cable may become disconnected from the connector.

In some embodiments, referring to fig. 5, the positioning system 500 employs a multi-point mooring system comprising a chain line 510, a block 520, a chain 530 and an anchor body 540 connected in series, the top end of the chain line 510 being connected to the wave energy generating device 400, the anchor body 540 being located on the sea floor. The positioning system 500 can effectively reduce the displacement of the wave energy power generation devices 400 in the horizontal direction, so that the relative displacement among different wave energy power generation devices 400 is limited, and the overall safety of the facility is guaranteed.

Referring to fig. 6 and 7, a floating offshore facility provided in embodiment 2 of the present disclosure is different from the floating offshore facility provided in embodiment 1 of the present disclosure in that the floating body unit 120 in embodiment 2 of the present disclosure is directly formed by connecting a plurality of cross-shaped floating bodies through main cables, and the centers of the cross-shaped floating bodies are respectively provided with a second main cable hole 1221 through which the main cable passes, and compared with the floating body unit 120 adopted in embodiment 1, the floating body unit 120 adopted in embodiment 2 is simpler in structure and is suitable for a marine environment with a more complicated dynamic load. Example 2 provides a floating offshore facility wherein the positioning system 500 employs a mooring system.

Further, the number combination of the wave energy power generation devices 400 on the main cable 110 and the floating body units 120 can be in different forms so as to meet different design requirements of power generation and wave-breaking functions. In the embodiment 1 shown in fig. 1, every three floating body units 120 correspond to one wave energy power generation device; in the embodiment 3 shown in fig. 8, two wave energy power generation devices 400 are provided for every three float units 120; in the embodiment 4 shown in fig. 9, one wave energy power generation device 400 corresponds to each floating body unit 120.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A floating offshore facility, comprising:

the curtain type barrier net is hung on the main cable and is unfolded underwater;

the wave energy power generation device is connected with the main cable through a connector and used for converting wave energy into electric energy and supplying power to a load, and the connector is configured to connect or disconnect the wave energy power generation device with the main cable according to the tension between the wave energy power generation device and the main cable; and

2. The floating offshore facility of claim 1, wherein the buoyant unit comprises two side plates spaced apart in a direction of a main line and a plurality of cross-shaped buoyant bodies and a plurality of secondary lines disposed between the two side plates; the centers of the two side plates are respectively provided with a first main cable hole for the main cable to pass through; the auxiliary cables positioned between the two side plates are arranged in an array form and are parallel to the main cables, and the end parts of the auxiliary cables are respectively fixed on the corresponding side plates; the end parts of the four support arms of each cross-shaped floating body are provided with slave cable holes for the slave cables to pass through, and the wave dissipation holes are formed between the adjacent cross-shaped floating bodies.

3. The floating offshore unit of claim 2, wherein a first pre-stress is applied to each of the slave cables.

4. The floating offshore unit of claim 1, wherein a second pre-stress is applied to the main cable.

5. The floating offshore facility according to claim 1, wherein the float unit comprises a plurality of cross floats, a second main cable hole for the main cable to pass through is formed in the center of each cross float, and the wave dissipating holes are formed between the adjacent cross floats.

6. The floating offshore unit of claim 1, wherein a bumper is provided on the main cable.

7. The floating offshore unit of claim 1, wherein the curtain barrier net comprises a net body suspended from the main cable.

8. The floating offshore unit of claim 7, wherein the net body is more than 2 times the length of the main cable in the direction of the main cable.

9. The floating offshore facility of claim 7, wherein the curtain barrier net further comprises a counterweight structure disposed at the bottom of the net body.

10. The floating offshore facility of claim 1 wherein the active detection sensors employ sonar sensors, piezoelectric crystal sensors, olfactory sensors, and thermal radiation sensors.

11. The floating offshore facility of claim 1, wherein the passive detection sensors employ long-distance distributed acoustic detectors arranged at equal intervals along the direction of deployment of the curtain-type barrier net.

12. The floating offshore facility of claim 1, wherein the positioning system is an anchoring system or a mooring system.