CN114906280A - Offshore floating photovoltaic mooring structure - Google Patents
Offshore floating photovoltaic mooring structure Download PDFInfo
- Publication number
- CN114906280A CN114906280A CN202210767470.5A CN202210767470A CN114906280A CN 114906280 A CN114906280 A CN 114906280A CN 202210767470 A CN202210767470 A CN 202210767470A CN 114906280 A CN114906280 A CN 114906280A
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- CN
- China
- Prior art keywords
- floating photovoltaic
- mooring
- anchor
- structure according
- offshore floating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/4453—Floating structures carrying electric power plants for converting solar energy into electric energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention relates to an offshore floating photovoltaic mooring structure, which comprises a floating photovoltaic power station (1), mooring cables (2), a buoy (3) and a water bottom gravity anchor (4); the floating photovoltaic power station (1), mooring cable (2) and submarine gravity anchor (4) connect gradually, flotation pontoon (3) are established ties on mooring cable (2), floating photovoltaic power station (1) is regular hexagon. According to the invention, the floating pontoon is connected in series to the mooring cable, so that the buoyancy generated by the floating pontoon can offset part of the vertical tension from the underwater mooring cable, and the vertical load generated by the mooring cable can be reduced by increasing the length of the mooring cable. For any axis which is over-center, the distance from the angular point floater to the axis is far, and the moment of inertia of the angular point floater to the axis is large according to the shift theorem. Therefore, the device has high stationarity and excellent stationarity performance.
Description
Technical Field
The invention belongs to the field of photovoltaic equipment, and particularly relates to an offshore floating photovoltaic mooring structure.
Background
Offshore floating photovoltaic installations are generally located in offshore areas and require the fixing of the photovoltaic equipment by mooring lines.
However, the existing floating photovoltaic mooring device has the disadvantages that the floating body needs to bear larger vertical load due to the larger weight of the mooring line, and the effective bearing capacity of the floating photovoltaic mooring device is seriously reduced.
And the anchoring line part is partially immersed in seawater, so that the requirement on the corrosion resistance is high. The existing corrosion resistant coatings are damaged, resulting in the need for frequent maintenance. But the offshore repair difficulty and cost are high, so that the repair cost of the whole device is high.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical problems to be solved by the present invention include:
1. how to improve the effective bearing capacity of the floating photovoltaic mooring device.
2. How to reduce the maintenance cost of a floating photovoltaic mooring.
In order to achieve the purpose, the offshore floating photovoltaic mooring structure comprises a floating photovoltaic power station, mooring cables, a buoy and a water bottom gravity anchor; the floating photovoltaic power station, mooring line and submarine gravity anchor connect gradually, the flotation pontoon is established ties on mooring line, floating photovoltaic power station is regular hexagon.
Furthermore, the mooring cable is a catenary type, the middle part is a steel cable, and the two ends are steel wire ropes.
Furthermore, the floating photovoltaic power station is provided with cable guide holes at hexagonal corners.
Further, the mooring cable comprises two anchor chains, and one ends of the anchor chains are fixedly connected to the cable guide holes.
Further, the two anchor chains are arranged below the buoy in a combined mode and are connected to a water bottom gravity anchor.
Furthermore, the cable guide holes are arranged at the positions, close to the deck of the bottom line of the triangle, of two sides of one corner of the regular hexagon.
Further, the anchor chain is externally applied with current cathodic protection at the underwater part.
Further, the anchor chain is connected with the cable guide hole in a hinged mode.
Further, the anchor chain is connected with the cable guide hole through a flexible connector.
Further, the length of the anchor chain above the buoy is half of the inner diameter of the floating photovoltaic power station.
Compared with the prior art, the invention has the technical effects that:
1. by connecting the buoy in series with the mooring line, the buoyancy generated by the buoy can counteract a portion of the vertical tension from the underwater mooring line, and increasing the length of the mooring line can reduce the vertical load generated by the mooring line. For any axis which is over-center, the distance from the angular point floater to the axis is far, and the moment of inertia of the angular point floater to the axis is large according to the shift theorem. Therefore, the device has high stationarity and excellent stationarity performance.
2. The device adopts impressed current cathodic protection for protecting mooring cables and underwater gravity anchors in a full immersion area and the lower part, realizes no attenuation, controllability and adjustability of cathodic protection, and can enhance the timeliness, accuracy and intellectualization of monitoring of an anticorrosion system.
The conception, specific structure and technical effects of the present invention will be further described in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.
Drawings
FIG. 1 is a top view of the system of the present invention;
fig. 2 is a side view of the system of the present invention.
The system comprises a floating photovoltaic power station 1, a mooring cable 2, a buoy 3, a water bottom gravity anchor 4, a cable guide hole 11 and an anchor chain 21.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, elements that are structurally identical are represented by like reference numerals, and elements that are structurally or functionally similar in each instance are represented by like reference numerals. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components has been exaggerated in some places in the drawings where appropriate for clarity of illustration.
As shown in fig. 1 and 2, an offshore floating photovoltaic mooring structure comprises a floating photovoltaic power plant 1, mooring lines 2, buoys 3 and underwater gravity anchors 4; the floating photovoltaic power station 1, mooring cable 2 and submarine gravity anchor 4 connect gradually, flotation pontoon 3 establishes ties on mooring cable 2, floating photovoltaic power station 1 is regular hexagon.
The mooring cable 2 is of a catenary type, the middle of the mooring cable is a steel cable, and the two ends of the mooring cable are steel wire ropes.
The floating photovoltaic power station 1 is provided with cable guide holes 11 at hexagonal corners.
The mooring line 2 comprises two anchor chains 21, and one end of each anchor chain 21 is fixedly connected to the fairlead 11.
The two anchor chains 21 are joined together below the buoy 3 and are connected to the underwater gravity anchor 5.
The cable guide holes 11 are arranged at the positions of two sides of one corner of the regular hexagon close to the deck of the triangular bottom line.
The anchor chain 21 is externally provided with current cathodic protection at the underwater part.
The anchor chain 21 is connected with the cable guide hole 11 in a hinged mode. Or the anchor chain 21 is connected with the fairlead hole 11 through a flexible connector.
The length of the anchor chain 21 above the buoy 3 is half of the inner diameter of the floating photovoltaic power station 1.
This embodiment allows the buoyancy generated by the buoy 3 to counteract a portion of the vertical tension from the underwater mooring line 2 by connecting the buoy 3 in series to the mooring line 2, and increasing the length of the mooring line reduces the vertical load generated by the mooring line. For any axis which is over-center, the distance from the angular point floater to the axis is far, and the moment of inertia of the angular point floater to the axis is large according to the shift theorem. Therefore, the device has high stationarity and excellent stationarity performance.
In the embodiment, impressed current cathodic protection is adopted for protecting the mooring cable 2 and the gravity anchor 4 in the full-immersion area and the lower part, so that the non-attenuation, controllability and adjustability of cathodic protection are realized, and the timeliness, accuracy and intellectualization of monitoring of an anticorrosion system can be enhanced.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. An offshore floating photovoltaic mooring structure, characterized in that: the device comprises a floating photovoltaic power station (1), mooring cables (2), a buoy (3) and a water bottom gravity anchor (4); the floating photovoltaic power station (1), mooring cable (2) and submarine gravity anchor (4) connect gradually, flotation pontoon (3) are established ties on mooring cable (2), floating photovoltaic power station (1) is regular hexagon.
2. Offshore floating photovoltaic mooring structure according to claim 1, characterized in that the mooring lines (2) are catenary, with steel cables in the middle and steel cables at both ends.
3. Offshore floating photovoltaic mooring structure according to claim 1, characterized in that the floating photovoltaic power plant (1) is provided with fairlead holes (11) at the hexagonal corners.
4. Offshore floating photovoltaic mooring structure according to claim 3, characterized in that the mooring line (2) comprises two anchor chains (21), one end of the anchor chains (21) being fixedly connected to the fairlead (11).
5. Offshore floating photovoltaic mooring structure according to claim 4, characterized in that the two anchor lines (21), below the buoy (3) and in one piece, are connected to the underwater gravitational anchor (4).
6. Offshore floating photovoltaic mooring structure according to claim 5, characterized in that the fairlead (11) is placed at the deck position on both sides of a corner of a regular hexagon near the base line of the triangle.
7. Offshore floating photovoltaic mooring structure according to claim 6, characterized in that the anchor chains (21) are galvanically cathodically protected in the submerged part.
8. Offshore floating photovoltaic mooring structure according to claim 7, characterized in that the anchor chain (21) is connected with the fairlead (11) by means of a hinge.
9. Offshore floating photovoltaic mooring structure according to claim 7, characterized in that the anchor chain (21) is connected to the fairlead (11) by a flexible connector.
10. Offshore floating photovoltaic mooring structure according to claim 7, characterized in that the anchor chain (21) has a length above the buoy (3) of half the internal diameter of the floating photovoltaic power plant (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210767470.5A CN114906280A (en) | 2022-06-30 | 2022-06-30 | Offshore floating photovoltaic mooring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210767470.5A CN114906280A (en) | 2022-06-30 | 2022-06-30 | Offshore floating photovoltaic mooring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114906280A true CN114906280A (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210767470.5A Pending CN114906280A (en) | 2022-06-30 | 2022-06-30 | Offshore floating photovoltaic mooring structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043601A (en) * | 2016-06-18 | 2016-10-26 | 青岛迪玛尔海洋工程有限公司 | Overwater photovoltaic system anchoring device |
| US9729101B1 (en) * | 2016-04-25 | 2017-08-08 | X Development Llc | Deployment techniques of a floating photovoltaic power generation system |
| CN107600346A (en) * | 2017-09-30 | 2018-01-19 | 长江勘测规划设计研究有限责任公司 | Water surface floating photovoltaic plant resistance to overturning control system |
| KR20190015075A (en) * | 2017-08-03 | 2019-02-13 | 주식회사 비케이에너지 | Mooring and rotating apparatus of floating typed system for generating photovoltaic power |
| CN110371251A (en) * | 2019-07-11 | 2019-10-25 | 上海交通大学 | A kind of novel floatation type list column wind turbine mooring gear |
| CN211996077U (en) * | 2020-04-29 | 2020-11-24 | 中国电建集团四川工程有限公司 | Floating photovoltaic system |
-
2022
- 2022-06-30 CN CN202210767470.5A patent/CN114906280A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9729101B1 (en) * | 2016-04-25 | 2017-08-08 | X Development Llc | Deployment techniques of a floating photovoltaic power generation system |
| CN106043601A (en) * | 2016-06-18 | 2016-10-26 | 青岛迪玛尔海洋工程有限公司 | Overwater photovoltaic system anchoring device |
| KR20190015075A (en) * | 2017-08-03 | 2019-02-13 | 주식회사 비케이에너지 | Mooring and rotating apparatus of floating typed system for generating photovoltaic power |
| CN107600346A (en) * | 2017-09-30 | 2018-01-19 | 长江勘测规划设计研究有限责任公司 | Water surface floating photovoltaic plant resistance to overturning control system |
| CN110371251A (en) * | 2019-07-11 | 2019-10-25 | 上海交通大学 | A kind of novel floatation type list column wind turbine mooring gear |
| CN211996077U (en) * | 2020-04-29 | 2020-11-24 | 中国电建集团四川工程有限公司 | Floating photovoltaic system |
Non-Patent Citations (1)
| Title |
|---|
| V.R.普路德克: "《腐蚀控制与设计》", 石油工业出版社, pages: 273 - 276 * |
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