CN211257094U - Protection device for be used for offshore wind turbine pile foundation scour prevention - Google Patents
Protection device for be used for offshore wind turbine pile foundation scour prevention Download PDFInfo
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- CN211257094U CN211257094U CN201921456168.8U CN201921456168U CN211257094U CN 211257094 U CN211257094 U CN 211257094U CN 201921456168 U CN201921456168 U CN 201921456168U CN 211257094 U CN211257094 U CN 211257094U
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- wind turbine
- offshore wind
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Abstract
The utility model discloses a protector for offshore wind turbine pile foundation scour prevention, including fixed part and protection portion, fixed part and protection portion fixed connection, the fixed part is equipped with outer tube and inner tube, be equipped with the reinforced concrete who pours between outer tube and the inner tube, the protection portion is equipped with a multilayer protection section of thick bamboo, every layer a protection section of thick bamboo is equipped with a plurality of diffluence holes, and the diffluence hole dislocation of an adjacent protection section of thick bamboo is laid. The utility model provides a protector for offshore wind turbine pile foundation scour prevention can effectually block the vortex and go forward, reduces the energy of vortex, plays the effect of protection pile foundation.
Description
Technical Field
The utility model relates to an offshore wind turbine technical field, concretely relates to a protector for be used for offshore wind turbine pile foundation scour protection.
Background
The wind energy is renewable clean energy, the offshore wind power has high utilization rate of the wind energy and small influence on human production and life, and is suitable for construction and development of coastal cities. However, the offshore wind farm is in the marine environment under the combined action of wind, waves, tidal currents and other power, local scouring occurs around the foundation of the wind turbine, the stability of the offshore wind turbine is reduced due to the formation of a scouring pit, and severe instability and collapse can be caused, so that great loss is caused. The wind turbine foundation bears the load of the wind turbine foundation, and is also subjected to lateral pressure generated by rotation of the wind turbine blade, and the stability requirement is high, so that the research on local scouring of the offshore wind power pile foundation has important engineering application value.
Along with the construction of wharf trestles and cross-river and cross-sea bridges in offshore and estuary regions, importance is placed on the pile foundation scouring under the action of tide. The scouring under the action of the tidal current has certain difference relative to the constant flow. The periphery of the cylinder is locally washed under the action of waves, and vortexes in the peripheral water flow change along with KC number to generate different scouring and silting forms.
Under the action of waves, the local maximum scouring depth of the wind power pile foundation is increased along with the increase of wave number. The reflected wave and the forward wave on the wave-facing side of the pile foundation are superposed to form a standing wave with larger wave energy, so that the semicircular area on the front side of the pile foundation is flushed, the two sides are wave scattering erosion and silt transition areas, and the back side is a wave shield slight siltation area to form a revolving flow.
The position of the sea area where the wind power place is located receives the effect of tidal current, scouring is generated around the pile foundation, the form of the scouring pit is oval, the scouring range of the front side and the rear side of the pile foundation is small, the scouring depth is large, the scouring range of the left side and the right side is large, the scouring depth is small, and a horseshoe vortex is formed.
When wave and trend combined action, the pile foundation received the wave current combined action, and the stack effect that scours degree of depth and scope than simple rivers and wave action is bigger, and the wave action makes the pile foundation silt reciprocating oscillation around, and the position change takes place along with rivers for the silt granule of motion to form the scour pit.
The offshore wind power pile foundation is the key place for supporting the whole offshore wind power machine, the manufacturing cost is about 14 percent of the whole offshore wind power generation device, and most accidents of the offshore wind power generation device are caused by unstable pile foundation. Due to the action of waves and tide, silt around the offshore wind power pile foundation can be flushed and form a flushing pit, and the flushing pit can influence the stability of the pile foundation. In addition, the water flow mixed with silt near the surface of the seabed continuously washes the pile foundation, corrodes and destroys the surface of the pile foundation, and can cause the collapse of the offshore wind turbine unit in serious cases.
The anti-scouring device of the currently adopted offshore wind power pile foundation is mainly a riprap protection method. However, the integrity of the riprap protection is poor, and the maintenance cost and the workload in the application process are large. The broken stones protected by the riprap are easy to displace under the action of water flow and lose the action. The conventional flexible scour prevention is generally to lay bionic aquatic weeds which are not suitable for small-scale use and inconvenient to maintain.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in: technical problem to prior art exists, the utility model provides a protector for offshore wind turbine pile foundation scour protection can effectually block the vortex and go forward, reduces the energy of vortex, plays the effect of protection pile foundation.
In order to solve the technical problem, the utility model provides a technical scheme does:
the utility model provides a protector for offshore wind turbine pile foundation scour protection, includes fixed part and protection part, fixed part and protection part fixed connection, the fixed part is equipped with outer tube and inner tube, be equipped with the reinforced concrete who pours between outer tube and the inner tube, the protection part is equipped with a multilayer protection section of thick bamboo, every layer a protection section of thick bamboo is equipped with a plurality of diffluence holes, and the diffluence hole dislocation of an adjacent protection section of thick bamboo is laid.
The further improvement of the technical scheme is as follows:
in the above scheme, preferably, all the protection cylinders are coaxially arranged, and a cavity is formed in the middle of each protection cylinder.
In the above scheme, preferably, the protection part is further provided with a guardrail, the guardrail is arranged on the outer layer of the protection barrel, and the guardrail is in a non-flexible net shape.
In the above scheme, preferably, the mesh gap of the protective net is smaller than the riprap.
In the above scheme, preferably, the protective net is provided with bionic grass.
In the above scheme, preferably, the protective cylinder is provided with three layers.
In the above aspect, preferably, the bottom surface of the protective cylinder is higher than the surface of the polishing stone layer.
In the above aspect, preferably, the upper portion of the fixing portion is a circular cone, and the bottom portion is a disk-shaped end portion.
In the above aspect, preferably, the diameter of the joint between the fixing portion and the protection portion is the same.
In the above scheme, preferably, the protection device is arranged at a stone throwing position of the pile foundation.
The utility model provides a protector for be used for offshore wind turbine pile foundation scour protection has following advantage compared with prior art: the utility model discloses a protector lays around the pile foundation, is located the riprap and lays the department. When water flows into the protective device, the flow velocity and energy of the water flow are reduced while streaming and vortex are generated, and when the water flow is subjected to the later pile foundation again, the sea bed surface around the pile foundation cannot be damaged greatly. The utility model discloses protector's guardrail is installed outside the protective barrel, can block the partial decline rivers that protect a section of thick bamboo surface, reduces the production of gyration flow and the horse's hoof vortex, and then plays the guard action. The utility model discloses a protector, the bottom is located throws the stone, can prevent the displacement of rubble under the rivers effect, improves the guard action of throwing the stone.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the protective tube of the present invention.
Fig. 3 is a schematic perspective view of the protective tube of the present invention.
The reference numbers in the figures illustrate:
1. a fixed part; 11. an outer tube; 12. an inner tube; 2. a protective part; 21. a protective cylinder; 22. a shunt hole; 23. and (4) a guardrail.
Detailed Description
The following describes the embodiments of the present invention in detail. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Fig. 1 to 3 show an embodiment of the utility model discloses a protector for offshore wind turbine pile foundation scour prevention, protector includes fixed part 1 and guard portion 2, fixed part 1 and guard portion 2 fixed connection, and fixed part 1 is the same with 2 junctions diameters of guard portion. The protective devices are arranged around the pile foundation in a surrounding mode, multiple layers of protective devices are arranged, and the protective devices on each layer are distributed in a staggered mode. The fixed part 1 is inserted into the riprap layer, and the protective part 2 exposes the riprap layer.
In this embodiment, the upper portion of the fixing portion 1 is formed in an annular conical shape. The fixing part 1 is provided with an outer pipe 11 and an inner pipe 12, reinforced concrete formed by pouring is arranged between the outer pipe 11 and the inner pipe 12, and the bottom of the fixing part 1 is a disc-shaped end part. During installation, the flint stone is pressed on the end part of the disc shape, so that the effect of stabilizing the protection device is achieved.
In this embodiment, the protection portion 2 is provided with three layers of protection cylinders 21, each layer of protection cylinder 21 is provided with a plurality of diversion holes 22, and the diversion holes 22 of adjacent protection cylinders 21 are arranged in a staggered manner. The thickness of all the protective cylinders 21 may not be exactly the same or may be the same. All the protective cylinders 21 are coaxially arranged, and the middle of each protective cylinder 21 is a hollow cavity. The diversion holes 22 are distributed in a plurality of rows, and each row is distributed along the circumference of the wall of the protective cylinder 21. In this embodiment, the height of the protective cylinder 21 is 1.5m, the bottom surface of the protective cylinder 21 is higher than the surface of the riprap layer, the diameter of the diversion holes 22 is 20mm, the diversion holes are annularly distributed around the cylinder wall, and each row has 8 holes, and the total number of the holes is 11. The pitch of each hole in the same row is at a 45 ° central angle. The diversion holes 22 of the two adjacent layers of protective cylinders 21 are arranged in a staggered manner, and the circle centers of the diversion holes are different from each other by a central angle of 60 degrees, namely the central angle of 30 degrees for water flow to pass through.
In this embodiment, the protection part 2 is further provided with a guardrail 23, the guardrail is arranged on the outer layer of the protection barrel 21, and the guardrail 23 is in a non-flexible net shape. The net gap of the protective net is smaller than the riprap, so that the riprap can be prevented from blocking the protective net. The protective net is provided with the bionic grass, so that the broken stones can be prevented from blocking the holes, and the water flow flowing into the protective cylinder 21 can be reduced. The bionic grass is bound on the corresponding pore frame through the anchor belt.
When the device is used, the main factor causing local scouring is horseshoe vortex which is distributed on two sides of the pile foundation and rotates to roll away silt on the surface of the sea bed. The protector of this embodiment contains whole pile foundation, and the advance of protection section of thick bamboo 21 lateral wall can effectual barrier horseshoe vortex reduces the energy of vortex. When water flow reaches the interior of the protective cylinder 21 through the 3-layer diversion holes 22, the flow velocity is reduced, the shearing force on the surface of the sea bed is reduced, and the influence of local scouring is effectively reduced. The utility model discloses a protector simple structure, low in manufacturing cost. The wall of the protective cylinder 21 is provided with the diversion holes 22, so that the impact force of water flow on the device is effectively reduced, and the service life of a pile foundation is prolonged. In addition, because the shunting holes 22 are distributed annularly, water flow can pass through, so horseshoe vortex cannot be formed on two sides of the device, and secondary washing cannot be caused nearby the protection device.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a protector for offshore wind turbine pile foundation scour protection, a serial communication port, including fixed part and protection part, fixed part and protection part fixed connection, the fixed part is equipped with outer tube and inner tube, be equipped with the reinforced concrete who pours between outer tube and the inner tube, the protection part is equipped with a multilayer protection section of thick bamboo, every layer a protection section of thick bamboo is equipped with a plurality of diffluence holes, and the diffluence hole dislocation of an adjacent protection section of thick bamboo is laid.
2. The protection device for offshore wind turbine pile foundation erosion prevention according to claim 1, wherein all the protection cylinders are coaxially arranged.
3. The protection device for offshore wind turbine pile foundation scour prevention according to claim 2, wherein the protection portion is further provided with a guardrail, the guardrail is arranged on an outer layer of the protection barrel, and the guardrail is in a non-flexible net shape.
4. The protection device for offshore wind turbine pile foundation erosion prevention according to claim 3, wherein the mesh gap of the guardrail is smaller than a riprap.
5. The protection device for offshore wind turbine pile foundation scour prevention according to claim 4, wherein the guardrail is provided with bionic grass.
6. The protection device for offshore wind turbine pile foundation erosion prevention according to claim 2, wherein the protection barrel is provided with three layers.
7. The protection device for offshore wind turbine pile foundation erosion prevention according to claim 2, wherein a bottom surface of the protection barrel is higher than a surface of the rubble layer.
8. The protection device for offshore wind turbine pile foundation erosion prevention according to claim 1, wherein the upper portion of the fixing portion is an annular cone shape, and the bottom portion is a disc-shaped end portion.
9. The protection device for offshore wind turbine pile foundation scour prevention according to claim 8, wherein the diameter of the connection part of the fixing part and the protection part is the same.
10. The protection device for offshore wind turbine pile foundation scour prevention according to claim 8, wherein the protection device is arranged at a stone throwing position of the pile foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921456168.8U CN211257094U (en) | 2019-09-04 | 2019-09-04 | Protection device for be used for offshore wind turbine pile foundation scour prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921456168.8U CN211257094U (en) | 2019-09-04 | 2019-09-04 | Protection device for be used for offshore wind turbine pile foundation scour prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211257094U true CN211257094U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921456168.8U Expired - Fee Related CN211257094U (en) | 2019-09-04 | 2019-09-04 | Protection device for be used for offshore wind turbine pile foundation scour prevention |
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| CN (1) | CN211257094U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062345A (en) * | 2021-03-27 | 2021-07-02 | 华北电力大学 | Underwater pile foundation scouring protection device with scouring prevention hole |
| CN113389174A (en) * | 2021-07-09 | 2021-09-14 | 郭孟涛 | Protection device for building bridge |
| CN113718835A (en) * | 2021-09-16 | 2021-11-30 | 中国华能集团清洁能源技术研究院有限公司 | Marine wind power basis scour prevention device |
| CN113789807A (en) * | 2021-09-16 | 2021-12-14 | 盛东如东海上风力发电有限责任公司 | Offshore wind power foundation with turbulence holes |
| CN113833032A (en) * | 2021-09-16 | 2021-12-24 | 华能(浙江)能源开发有限公司清洁能源分公司 | Offshore wind power composite anti-scouring device |
-
2019
- 2019-09-04 CN CN201921456168.8U patent/CN211257094U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062345A (en) * | 2021-03-27 | 2021-07-02 | 华北电力大学 | Underwater pile foundation scouring protection device with scouring prevention hole |
| CN113062345B (en) * | 2021-03-27 | 2021-11-23 | 华北电力大学 | Underwater pile foundation scouring protection device with scouring prevention hole |
| CN113389174A (en) * | 2021-07-09 | 2021-09-14 | 郭孟涛 | Protection device for building bridge |
| CN113718835A (en) * | 2021-09-16 | 2021-11-30 | 中国华能集团清洁能源技术研究院有限公司 | Marine wind power basis scour prevention device |
| CN113789807A (en) * | 2021-09-16 | 2021-12-14 | 盛东如东海上风力发电有限责任公司 | Offshore wind power foundation with turbulence holes |
| CN113833032A (en) * | 2021-09-16 | 2021-12-24 | 华能(浙江)能源开发有限公司清洁能源分公司 | Offshore wind power composite anti-scouring device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200814 Termination date: 20210904 |
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| CF01 | Termination of patent right due to non-payment of annual fee |