CN216339645U - Offshore wind power foundation with active sand discharging function - Google Patents

Abstract

The utility model discloses an offshore wind power foundation with an active sand discharging function, which comprises a pile foundation, a sand guide worm and a driving wheel, wherein the outer contour of the cross section of the pile foundation is circular, the pile foundation is at least partially embedded into a seabed, the seabed is provided with a seabed surface, the sand guide worm is connected with the pile foundation and used for guiding silt on the outer peripheral side of the pile foundation to the pile foundation, the rotating center line of the driving wheel is orthogonal to the sea level, the driving wheel is connected with the sand guide worm, and the driving wheel is suitable for rotating under the push of seawater to drive the sand guide worm to guide the sand. The offshore wind power foundation with the active sand discharge function has the characteristics of simple structure, safety, reliability and good anti-scouring effect.

Description

Offshore wind power foundation with active sand discharging function

Technical Field

The utility model relates to the field of offshore wind power, in particular to an offshore wind power foundation with an active sand discharging function.

Background

Wind energy is increasingly regarded by human beings as a clean and harmless renewable energy source. Compared with land wind energy, offshore wind energy resources not only have higher wind speed, but also are far away from a coastline, are not influenced by a noise limit value, and allow the unit to be manufactured in a larger scale.

The offshore wind power foundation with the active sand discharging function is the key point for supporting the whole offshore wind power machine, the cost accounts for 20-25% of the investment of the whole offshore wind power, and most accidents of offshore wind power generators 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.

SUMMERY OF THE UTILITY MODEL

The present invention is based on the discovery and recognition by the inventors of the following facts and problems:

in the practical application process, because the effect of wave and morning and evening tides, the sea water is direct to marine wind power pile foundation basis erodees, the impact force direct action of sea water is on the surface of marine wind power pile foundation basis, present the downward vortex structure of digging of rolling up, the vortex structure rolls up the deposit on the seabed to further keep away from the place around the pile foundation with its area, formed and erodeed the hole, the formation that erodees the hole makes the pile foundation degree of depth shallow, influence the stability of pile foundation basis, can cause the collapse of marine wind turbine unit when serious.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the utility model provides an offshore wind power multi-pile foundation with good anti-scouring performance.

The offshore wind power foundation with the active sand discharge function comprises a pile foundation, a sand guide worm and a driving wheel, wherein the outer contour of the cross section of the pile foundation is circular, the pile foundation is at least partially embedded into a seabed, the seabed is provided with a seabed surface, the sand guide worm is connected with the pile foundation and used for guiding silt on the outer peripheral side of the pile foundation to the pile foundation, the rotation center line of the driving wheel is orthogonal to the sea level, the driving wheel is connected with the sand guide worm, and the driving wheel is suitable for rotating under the pushing of seawater to drive the sand guide worm to guide the sand.

According to the offshore wind power foundation with the active sand discharge function, the driving wheel drives the sand guide worm to guide sand to the pile foundation, so that the formation of a scouring pit is reduced, and the offshore wind power foundation with the active sand discharge function has the characteristics of simple structure, safety, reliability and good scouring prevention effect.

In some embodiments, the driving wheel includes a wheel body adapted to rotate under the push of seawater to generate a driving force, and a driving rod having one end connected to the wheel body and the other end connected to the sand guide worm, the driving rod being configured to transmit the driving force of the wheel body to the sand guide worm.

In some embodiments, the offshore wind power foundation with the active sand discharging function further comprises a one-way bearing, the one-way bearing is arranged on the transmission rod, and the wheel body is suitable for being pushed by seawater to rotate so as to drive the sand guide worm to guide sand through the transmission rod and the one-way bearing.

In some embodiments, at least a portion of the wheel is located below sea level.

In some embodiments, the length direction of the sand guide worm rod is orthogonal to the length direction of the pile foundation.

In some embodiments, a sand guide groove is formed in the outer peripheral surface of the sand guide worm, the sand guide groove is spirally formed along the length direction of the sand guide worm, and the sand guide worm is driven by the driving wheel to rotate so that external silt moves in the sand guide groove along the length direction of the sand guide worm.

In some embodiments, the offshore wind power foundation with the active sand discharge function further comprises a fixing member, the fixing member is a conical member, the cross-sectional area of the conical member gradually decreases towards the seabed along the length direction of the pile foundation, and the conical member is connected with the sand guide worm and extends towards the seabed along the length direction of the pile foundation.

In some embodiments, the number of the sand guide worms is multiple, the number of the driving wheels is multiple, and the plurality of the sand guide worms and the plurality of the driving wheels are connected in a one-to-one correspondence and are arranged at intervals in the circumferential direction of the pile foundation.

In some embodiments, the outer circumferential surface of the pile foundation comprises a front surface facing the direction of the tidal current, a back surface opposite to the front surface, and two side surfaces, and the distance between adjacent sand-guiding worms distributed on the front surface and the back surface is smaller than the distance between adjacent sand-guiding worms distributed on the two side surfaces.

In some embodiments, the bottom of the pile foundation is provided with a soil cutting plate extending into the seabed along the length direction of the pile foundation, and the bottom end of the soil cutting plate is of a knife-edge structure.

Drawings

Fig. 1 is a schematic structural diagram of an offshore wind power foundation with an active sand discharge function according to an embodiment of the utility model.

Reference numerals:

pile foundation 1, sand guide worm 2, sand guide groove 21, driving wheel 3, wheel body 31, transmission rod 32 and fixing piece 4.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

An offshore wind power foundation with active sand removal functionality according to an embodiment of the utility model is described below with reference to fig. 1.

The offshore wind power foundation with the active sand discharging function comprises a pile foundation 1, a sand guide worm 2 and a driving wheel 3.

The cross section of the pile foundation 1 is circular in outline, the pile foundation 1 is at least partially embedded into a seabed, the seabed is provided with a seabed surface, the sand guide worm 2 is connected with the pile foundation 1, the sand guide worm 2 is used for guiding silt on the outer peripheral side of the pile foundation 1 to the pile foundation 1, the rotation center line of the driving wheel 3 is intersected with the sea level, the driving wheel 3 is connected with the sand guide worm 2, and the driving wheel 3 is suitable for rotating under the pushing of seawater to drive the sand guide worm 2 to guide the sand.

As shown in fig. 1, a cylindrical pile foundation 1 is buried downwards into a seabed, a sand guide worm 2 is arranged on the periphery of the pile foundation 1, the sand guide worm 2 is arranged towards the pile foundation 1, a driving wheel 3 is arranged above the sand guide worm 2, the driving wheel 3 is horizontally arranged and can rotate under the push of seawater, so that driving force is generated, the driving force is downwards transmitted to the sand guide worm 2, so that silt around the pile foundation 1 is guided into the pile foundation 1, when seawater tide impacts the pile foundation 1, horseshoe-shaped vortexes are formed on the periphery of the pile foundation 1, silt is flushed to form a flushing pit, and then the sand guide worm 2 guides the silt into the flushing pit again for filling, so that the formation of the flushing pit is reduced, and the anti-scouring performance and the stability of the pile foundation 1 are improved.

According to the offshore wind power foundation with the active sand discharging function, the driving wheel 3 drives the sand guide worm 2 to guide sand to the pile foundation 1, so that the formation of a scouring pit is reduced, and the offshore wind power foundation with the active sand discharging function has the characteristics of simple structure, safety, reliability and good scouring prevention effect.

In some embodiments, the driving wheel 3 includes a wheel body 31 and a transmission rod 32, the wheel body 31 is adapted to rotate under the push of seawater to generate the driving force, one end of the transmission rod 32 is connected to the wheel body 31, the other end of the transmission rod 32 is connected to the sand guide worm 2, and the transmission rod 32 is used for transmitting the driving force of the wheel body 31 to the sand guide worm 2.

As shown in fig. 1, the wheel body 31 is horizontally disposed on the sea level, a transmission rod 32 is disposed between the wheel body 31 and the sand guide worm gear 2, the transmission rod 32 transmits the driving force generated by the wheel body 31 to the sand guide worm gear 2, so as to drive the sand guide worm gear 2 to guide sand, and the transmission mode of the transmission rod 32 includes, but is not limited to, gear transmission, worm transmission, link transmission and the like.

In some embodiments, the offshore wind power foundation with active sand removing function further comprises a one-way bearing (not shown in the figure), the one-way bearing is arranged on the transmission rod 32, and the wheel body 31 is suitable for being driven to rotate by seawater so as to drive the sand guiding worm 2 to guide sand through the transmission rod 32 and the one-way bearing.

The wheel body 31 can rotate under the drive of seawater, the direction of tidal current generated by the seawater is changeable, the direction of power generated by the tidal current drive wheel body 31 in the opposite direction is opposite, in order to ensure that the sand guiding direction of the sand guiding worm 2 faces to the pile foundation 1 from the outer periphery of the pile foundation 1, a one-way bearing is arranged between the wheel body 31 and the transmission rod 32, when the direction of tidal current faces to the pile foundation 1 from the outer periphery of the pile foundation 1, the drive power generated by the wheel body 31 is downwards transmitted to the sand guiding worm 2 through the one-way bearing and the transmission rod 32, the sand guiding worm 2 starts to guide sand, when the direction of tidal current is opposite, the one-way bearing does not perform power transmission, the reverse sand guiding of the sand guiding worm 2 is prevented, the stability of the pile foundation 1 is enhanced, and the service life of the transmission rod 32 is prolonged.

In some embodiments, at least a portion of wheel 31 is located below sea level. All or the lower half part of the wheel body 31 is positioned in seawater and receives impact of tide, so that driving force is generated, the transmission rod 32 is arranged perpendicular to the length direction of the sand guide worm 2, power generated by the wheel body 31 is effectively transmitted, and the device has the characteristics of simplicity and high efficiency.

In some embodiments, the length direction of the sand guide worm 2 is orthogonal to the length direction of the pile foundation 1. In other words, the length direction of the sand guide worm 2 may be the radial direction of the pile foundation 1, or the length direction of the sand guide worm 2 may also be the horizontal direction.

In some embodiments, the sand guide worm 2 is provided with a sand guide groove 21 on the outer circumferential surface thereof, the sand guide groove 21 is spirally arranged along the length direction of the sand guide worm 2, and the sand guide worm 2 is driven by the driving wheel 3 to rotate so that the external sand moves in the sand guide groove 21 along the length direction of the sand guide worm 2.

As shown in fig. 1, a plurality of sand guide grooves 21 are spirally formed on the outer circumferential surface of the sand guide worm 2, and when the sand guide worm 2 rotates, silt moves in the sand guide grooves 21, so that the silt is conveyed from the outer circumferential side of the pile foundation 1 to the pile foundation 1, and filling of a scour pit is completed.

In some embodiments, the offshore wind power foundation with active sand discharging function further comprises a fixing piece 4, wherein the fixing piece 4 is a conical piece, the cross-sectional area of the conical piece is gradually reduced towards the seabed along the length direction of the pile foundation 1, and the conical piece is connected with the sand guide worm 2 and extends towards the seabed along the length direction of the pile foundation 1.

As shown in fig. 1, a fixing member 4 is connected below the sand guide worm 2 to fix the sand guide worm 2 and prevent the sand guide worm 2 from deflecting under the washing of seawater, and the fixing member 4 is a conical member extending downwards and inserted into the seabed, and the conical member extends downwards to fix the sand guide worm 2 on the seabed, so that the stability of the sand guide worm 2 is enhanced, and the sand guide efficiency of the sand guide worm 2 is improved.

In some embodiments, there are a plurality of sand guide worms 2 and a plurality of driving wheels 3, and the plurality of sand guide worms 2 and the plurality of driving wheels 3 are connected in a one-to-one correspondence and are arranged at intervals in the circumferential direction of the pile foundation 1.

In the actual use process of the offshore wind power foundation with the active sand discharging function, tide can impact the peripheral surfaces of the pile foundations 1 in multiple directions, scouring pits can be formed on the peripheral sides of the pile foundations 1, in order to reduce the number of the scouring pits formed on the peripheral sides of the pile foundations 1, a plurality of sand guide worms 2 are arranged in the circumferential direction of the pile foundations 1 so as to fill the scouring pits formed in all the directions on the periphery of the pile foundations 1, and the scouring resistance of the pile foundations 1 is enhanced.

In some embodiments, the outer circumferential surface of the pile foundation 1 comprises a front surface facing the direction of the current, a back surface opposite to the front surface, and two side surfaces, and the pitch of the adjacent sand guiding worms 2 distributed on the front surface and the back surface is smaller than the pitch of the adjacent sand guiding worms 2 distributed on the two side surfaces.

The tidal current direction generated in the flowing process of the seawater is uneven and is influenced by monsoon climate and earth rotation, the tidal current in some sea areas flows like things and things throughout the year, and the tidal current flowing in the north and south rarely occurs. The pile foundation 1 arranged in the sea areas mainly bears the flow of things, large scouring pits are easily generated on seabed on the east side and the west side of the pile foundation 1, and the scouring pits generated on seabed on the south side and the north side are small, so that sand guide worms 2 can be densely arranged on the front side of the pile foundation 1 facing the direction of the flow and the back side opposite to the front side, and a small number of sand guide worms 2 are arranged on two sides of the pile foundation 1, namely the shortest distance between the adjacent sand guide worms 2 on the front side and the back side is smaller than the shortest distance between the adjacent sand guide worms 2 on the two side surfaces, and the sand guide is filled for scouring at the first time, so that the offshore wind power foundation with the active sand discharge function can have strong anti-scouring capability, the manufacturing cost can be reduced, and the offshore wind power foundation has the characteristics of good scouring effect and low cost.

In some embodiments, the bottom of the pile foundation 1 has a cutting plate (not shown) extending into the seabed along the length of the pile foundation 1, and the bottom end of the cutting plate is a knife-edge structure.

In order to ensure that the pile foundation 1 is stably buried downwards into the seabed under the action of dead weight, the bottom of the pile foundation 1 is also provided with a soil cutting plate extending downwards, the bottom of the soil cutting plate is of a blade-shaped structure, the cross section area of the blade-shaped structure is gradually reduced downwards, and the lowest end of the blade-shaped structure is provided with a pointed end, so that the soil cutting plate conveniently extends downwards into the seabed, the stability of the pile foundation 1 is improved, and the anti-scouring effect is enhanced.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. An offshore wind power foundation with an active sand discharge function, comprising:

a pile foundation having a circular cross-sectional outer profile, the pile foundation being at least partially embedded in a seabed, the seabed having a seabed surface;

the sand guide worm is connected with the pile foundation and used for guiding the sediment on the outer peripheral side of the pile foundation to the pile foundation;

the rotation center line of the driving wheel is orthogonal to the sea level, the driving wheel is connected with the sand guide worm, and the driving wheel is suitable for rotating under the pushing of seawater to drive the sand guide worm to guide sand.

2. The offshore wind turbine foundation with the active sand discharging function according to claim 1, wherein the driving wheel comprises a wheel body and a transmission rod, the wheel body is suitable for being driven by seawater to rotate so as to generate driving force, one end of the transmission rod is connected with the wheel body, the other end of the transmission rod is connected with the sand guide worm, and the transmission rod is used for transmitting the driving force of the wheel body to the sand guide worm.

3. The offshore wind turbine foundation with the active sand removal function of claim 2, further comprising a one-way bearing disposed on the transmission rod, wherein the wheel body is adapted to rotate under the push of seawater so as to drive the sand guiding worm to guide sand through the transmission rod and the one-way bearing.

4. An offshore wind foundation with active sand removal function according to claim 3, wherein at least part of said wheel body is located below sea level.

5. The offshore wind power foundation with active sand removal function of claim 1, wherein the length direction of the sand guide worm gear is orthogonal to the length direction of the pile foundation.

6. The offshore wind turbine foundation with the active sand discharging function according to claim 1, wherein the sand guiding worm is provided with a sand guiding groove on the outer circumferential surface thereof, the sand guiding groove is spirally arranged along the length direction of the sand guiding worm, and the sand guiding worm is driven by the driving wheel to rotate so as to enable external silt to move in the sand guiding groove along the length direction of the sand guiding worm.

7. The offshore wind turbine foundation with active sand removal function of claim 1, further comprising a fixing member, wherein the fixing member is a conical member, the cross-sectional area of the conical member gradually decreases towards the seabed along the length direction of the pile foundation, and the conical member is connected with the sand guiding worm and extends towards the seabed along the length direction of the pile foundation.

8. The offshore wind turbine foundation with the active sand discharge function of claim 1, wherein the number of sand guiding worms is multiple, the number of driving wheels is multiple, and the plurality of sand guiding worms and the plurality of driving wheels are connected in a one-to-one correspondence and are arranged at intervals in the circumferential direction of the pile foundation.

9. The offshore wind turbine foundation with active sand removal function of claim 1, wherein the outer circumference of the pile foundation comprises a front side facing the direction of current, a back side opposite to the front side, and two side surfaces, and wherein the distance between adjacent sand guiding worms distributed on the front side and the back side is smaller than the distance between adjacent sand guiding worms distributed on the two side surfaces.

10. The offshore wind power foundation with active sand discharge function of any one of claims 1 to 9, wherein the bottom of the pile foundation is provided with a soil cutting plate extending into the seabed along the length direction of the pile foundation, and the bottom end of the soil cutting plate is of a knife-edge structure.

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