CN113684857A - Offshore wind power foundation with scouring monitoring function - Google Patents

Abstract

The invention discloses an offshore wind power foundation with a scouring monitoring function, which comprises a pile foundation, a scouring monitoring device and an analysis device, the pile foundation comprising a first portion and a second portion connected to each other in a length direction thereof, the first portion being located above the sea level, the second part is positioned below the sea level and at least partially embedded into the seabed, the scouring monitoring device is arranged on the outer peripheral surface of the pile foundation, the flushing monitoring device comprises a light sensing component and a signal emitter, the light sensor is arranged on the second part, the signal emitter is used for receiving the light change and sending out a monitoring signal, and the analysis device is electrically connected with the scouring monitoring device and used for receiving and analyzing the monitoring signal sent out by the scouring monitoring device and judging the scouring state of the current pile foundation according to the monitoring signal. The offshore wind power foundation with the scouring monitoring function has the characteristics of being capable of monitoring at any time, simple and effective.

Description

Offshore wind power foundation with scouring monitoring function

Technical Field

The invention relates to the field of offshore wind power, in particular to an offshore wind power foundation with a scouring monitoring 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 scouring monitoring 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 scours 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. However, the offshore wind power pile foundation is buried in the seabed, so that the scouring condition cannot be directly observed, and the pile foundation cannot be maintained in advance when scouring is serious.

Disclosure of Invention

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

in the practical application process, due to the action of sea waves and tides, sea water directly scours the offshore wind power pile foundation, the impact force of the sea water directly acts on the surface of the offshore wind power pile foundation to form a downward winding and digging vortex structure, sediment on a seabed is wound and lifted by the vortex structure, the sediment is further far away from the periphery of the pile foundation, a scouring pit is formed, and the part of the pile foundation, which is buried below the surface of the sea bed, is exposed due to the formation of the scouring pit, so that the stability of the pile foundation is affected.

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 invention provides an offshore wind power foundation with a scouring monitoring function, which can monitor scouring conditions at any time and effectively early warn.

The offshore wind power foundation with the scouring monitoring function comprises a pile foundation, a scouring monitoring device and an analysis device, wherein the pile foundation comprises a first part and a second part which are connected with each other in the length direction, the first part is positioned above the sea level, the second part is positioned below the sea level and at least partially embedded into a seabed, the seabed is provided with a seabed surface, the scouring monitoring device is arranged on the outer peripheral surface of the pile foundation, the scouring monitoring device comprises a light sensing component and a signal transmitter, the light sensor is arranged on the second part, at least part of the light sensing component is positioned below the seabed surface, the light sensor is suitable for monitoring the light change of the position of the light sensor, the signal transmitter is arranged on the first part and connected with the light sensing component, and the signal transmitter is used for receiving the light change and sending a monitoring signal, the analysis device is electrically connected with the scouring monitoring device and is used for receiving and analyzing monitoring signals sent by the scouring monitoring device and judging the scouring state of the current pile foundation according to the monitoring signals.

According to the offshore wind power foundation with the scouring monitoring function, the scouring condition of the sediment around the pile foundation is monitored by arranging the optical sensor, and the offshore wind power foundation with the scouring monitoring function has the characteristics of being monitored at any time, simple and effective.

In some embodiments, the light sensing assembly extends along the length of the pile foundation on the outer circumferential surface of the pile foundation.

In some embodiments, the light sensing assembly comprises a plurality of light sensors spaced apart along the length of the pile foundation.

In some embodiments, at least one of the light sensors is located above the surface of the ocean floor.

In some embodiments, the distance between adjacent light sensors in the length direction of the pile foundation is 3cm-10 cm.

In some embodiments, the distance between two adjacent light sensors decreases towards the surface of the sea bed.

In some embodiments, the light sensing assembly further comprises a protective sleeve, and the protective sleeve is made of waterproof transparent sealing materials.

In some embodiments, the scour monitoring means is a plurality of scour monitoring means arranged circumferentially of the pile foundation.

In some embodiments, the position of the scour monitoring means in the length direction of the pile foundation is the height of the scour monitoring means, and the heights of the plurality of scour monitoring means are uniform.

In some embodiments, the analysis device is an upper computer.

In some embodiments, the signal transmitter is a wireless signal transmitter.

Drawings

Fig. 1 is a schematic structural diagram of an offshore wind power foundation with a scour monitoring function according to an embodiment of the present invention.

Reference numerals:

the sea level 100, the sea bed surface 200,

the pile foundation 1, the first part 11, the second part 12, the scouring monitoring device 2, the light sensing component 21, the light sensor 211, the protective sleeve 212 and the signal emitter 22.

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 invention and are not to be construed as limiting the invention.

An offshore wind power foundation with scour monitoring according to an embodiment of the present invention is described below with reference to fig. 1.

The offshore wind power foundation with scour monitoring according to the present invention comprises a pile foundation 1, a scour monitoring device 2 and an analysis device (not shown in the figure).

The pile foundation 1 comprises a first part 11 and a second part 12 connected to each other in its length direction, the first part 11 being located above sea level 100 and the second part 12 being located below sea level 100 and at least partly embedded in the seabed, which has a seabed surface 200.

As shown in fig. 1, the pile foundation 1 is divided into a first part 11 and a second part 12 in the up-down direction, the pile foundation 1 is buried downward in the seabed, the first part 11 is located above the sea level 100 of the pile foundation 1, a part of the second part 12 is buried downward in the seabed below the sea level 200, and the other part of the second part 12 is located in the sea below the sea level 100.

The scouring monitoring device 2 is arranged on the outer peripheral surface of the pile foundation 1, the scouring monitoring device 2 comprises a light sensing component 21 and a signal transmitter 22, the light sensor 211 is arranged on the second part 12, at least part of the light sensing component 21 is positioned below the seabed surface 200, the light sensor 211 is suitable for monitoring the light change of the position where the light sensor is positioned, the signal transmitter 22 is arranged on the first part 11 and is connected with the light sensing component 21, the signal transmitter 22 is used for receiving the light change and sending out a monitoring signal, and the analyzing device is electrically connected with the scouring monitoring device 2 and is used for receiving and analyzing the monitoring signal sent by the scouring monitoring device 2 and judging the scouring state of the current pile foundation 1 according to the monitoring signal.

As shown in fig. 1, a scouring monitoring device 2 is arranged on the outer peripheral surface of a pile foundation 1, a light sensing component 21 in the scouring monitoring device 2 is arranged on a second part 12, part of the light sensing component 21 is buried downward in the seabed along with the second part 12, part of the light sensing component 21 is located in seawater above a sea surface 200, when a scouring pit is formed by scouring the pile foundation 1 with seawater, the light sensing component 21 is exposed in seawater along with the second part 12 of the pile foundation 1, the light sensing component 21 of the part monitors the change of light at the position, the light sensing component 21 is connected with a signal emitter 22, the signal emitter 22 is arranged on a first part 11, so that the signal emitter 22 is located above the sea surface 100, the interference of seawater on the signal emitter 22 is prevented, the normal emission of signals is influenced, the signal emitter 22 sends out received light change signals, the analysis device receives the monitoring signal transmitted by the signal transmitter 22, and the analysis device analyzes and judges the sand erosion condition around the pile foundation 1 after receiving the monitoring signal, so that the staff can check the erosion condition and maintain the pile foundation 1 in time

According to the offshore wind power foundation with the scouring monitoring function, the light sensor 211 is arranged, light signals in sea water and light signals under a seabed are contrastingly analyzed, so that the formation of a scouring pit is judged through the change of the light signals, the scouring condition of silt around the pile foundation 1 is monitored, and the offshore wind power foundation with the scouring monitoring function has the characteristics of being monitored at any time, simple and effective.

In some embodiments, the light sensing assembly 21 extends along the length of the pile foundation 1 on the outer circumference of the pile foundation 1. As shown in fig. 1, on the outer peripheral surface of the pile foundation 1, the light sensing assembly 21 is vertically arranged in the up-down direction so as to monitor the scouring condition of the sand and sand on the outer peripheral surface of the pile foundation 1.

In some embodiments, the light sensing assembly 21 includes a plurality of light sensors 211, and the plurality of light sensors 211 are arranged at intervals in the length direction of the pile foundation 1. As shown in fig. 1, be equipped with a plurality of solitary optical line sensors 211 on optical line sensing subassembly 21 for the light change of monitoring different positions, after silt is washed away, optical line sensor 211 under silt exposes, and the light of its position can change, thereby monitors the silt washing condition of pile foundation 1 bottom.

In some embodiments, at least one light sensor 211 is positioned above the ocean floor level 200. The light sensors 211 at different positions can detect light signals at different positions, and in order to ensure that the light signals have contrast, one or more light sensors 211 are arranged in the seawater range above the sea level surface 200 and below the sea level 100 to perform signal contrast, so that the reliability of monitoring signals is further enhanced.

In some embodiments, the distance between adjacent light sensors 211 in the length direction of the pile foundation 1 is 3cm-10 cm. The plurality of light sensors 211 are uniformly spaced in the up-down direction to improve the monitoring accuracy, and further, in order to prevent mutual interference between the adjacent light sensors 211, the distance between the adjacent light sensors 211 in the up-down direction is 3cm at the minimum, but the distance is too large to affect the monitoring accuracy, so that the maximum distance between the adjacent light sensors 211 in the up-down direction is 10 cm.

In other embodiments, the distance between two adjacent light sensors 211 decreases toward the sea floor surface 200. The scouring condition of the seawater on the pile foundation 1 gradually slows down along with the depth of the pile foundation 1 embedded into the seabed, so that the cost is saved while the monitoring precision is ensured, the density of the light sensors 211 is gradually reduced from the surface 200 of the seabed downwards, namely, the distance between the adjacent light sensors 211 is gradually increased, and the monitoring capability and the practicability of the offshore wind power foundation with the scouring monitoring function can be enhanced.

In some embodiments, the light sensing assembly 21 further includes a protective cover 212, and the protective cover 212 is made of a waterproof transparent sealing material.

The washing away of sea water and silt can lead to the fact great wearing and tearing and corruption to light sensing subassembly 21, light sensor 211 is direct can shorten life with sea water and silt contact, for the life of extension light sensor 211, be equipped with protective sheath 212 in light sensor 211's periphery cover, the material of protective sheath 212 is waterproof transparent sealing material, when protecting light sensor 211 not corroded by the sea water, do not influence the receipt of light sensor 211 to light, it is durable to have durable, increase of service life's characteristics.

In some embodiments, there are a plurality of scour monitoring devices 2, and a plurality of scour monitoring devices 2 are arranged along the circumference of the pile foundation 1.

The tidal current direction that produces at the sea water flow in-process is inhomogeneous, receives the influence of monsoon weather and earth rotation, and the circumference of pile foundation 1 all probably receives the impact of trend and forms and erodees the hole, and a erodees monitoring devices 2 and can only monitor the silt scouring condition of a direction, for the scouring condition of comprehensive monitoring pile foundation 1, set up a plurality of scouring monitoring devices 2 in the circumference of pile foundation 1, and a plurality of scouring monitoring devices 2 are evenly spaced apart in the circumference of pile foundation 1 to improve monitoring quality.

In some embodiments, the position of the scour monitoring devices 2 in the length direction of the pile foundation 1 is the height of the scour monitoring devices 2, and the heights of the plurality of scour monitoring devices 2 are uniform.

When setting up a plurality of monitoring devices 2 that erode in pile foundation 1's circumference, in order to guarantee monitoring signal's unity, different monitoring devices 2 that erode all are located pile foundation 1's same cross section circle, and the difference erodees monitoring devices 2 unanimous in the upper and lower ascending position of pile foundation 1 promptly to the light change position that makes light sensor 211 record is unanimous, prevents to produce the signal confusion, influences the staff and judges.

In some embodiments, the analysis device is an upper computer. The upper computer can be a device including but not limited to a computer, a mobile phone, a tablet, a panel, a touch screen, etc.

In some embodiments, the signal transmitter 22 is a wireless signal transmitter. Pile foundation 1 is located the ocean, and signal transmitter 22 establishes on pile foundation 1, and pile foundation 1 is a plurality of, and the interval is great between signal transmitter 22 and the control room, if use the line connection between signal transmitter 22 and the control room, the circuit can be ageing along with the sea water corruption, influences signal transmission, and consequently signal transmitter 22 is mostly wireless signal transmitter, and wireless signal transmitter has that the interference killing feature is strong, difficult quilt corrodes the characteristics.

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 invention 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 invention.

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 (11)

1. An offshore wind power foundation with scour monitoring, comprising:

a pile foundation comprising a first portion and a second portion interconnected in a length direction thereof, the first portion being located above sea level, the second portion being located below the sea level and at least partially embedded in a seabed, the seabed having a seabed surface;

the scouring monitoring device is arranged on the outer peripheral surface of the pile foundation and comprises a light sensing component and a signal transmitter, the light sensor is arranged on the second part, at least part of the light sensing component is positioned below the sea bed surface, the light sensor is suitable for monitoring light change at the position of the light sensor, the signal transmitter is arranged on the first part and connected with the light sensing component, and the signal transmitter is used for receiving the light change and sending a monitoring signal;

and the analysis device is electrically connected with the scouring monitoring device and is used for receiving and analyzing the monitoring signals sent by the scouring monitoring device and judging the scouring state of the current pile foundation according to the monitoring signals.

2. The offshore wind turbine foundation with scour monitoring function of claim 1, wherein the light sensing assembly extends on the outer circumferential surface of the pile foundation along the length of the pile foundation.

3. The offshore wind power foundation with scour monitoring of claim 2, wherein the light sensing assembly comprises a plurality of light sensors spaced apart along the length of the pile foundation.

4. Offshore wind farm with scour monitoring according to claim 3, wherein at least one of the light sensors is located above the sea floor level.

5. The offshore wind turbine foundation with scour monitoring function of claim 4, wherein the distance between adjacent light sensors in the length direction of the pile foundation is 3cm-10 cm.

6. Offshore wind energy foundation with scour monitoring according to claim 4, wherein the distance between two adjacent light sensors decreases towards the surface of the sea bed.

7. The offshore wind power foundation with scour monitoring function of any one of claims 1 to 6, wherein the light sensing assembly further comprises a protective sleeve, and the protective sleeve is made of waterproof transparent sealing material.

8. The offshore wind turbine foundation with scour monitoring function of claim 1, wherein the plurality of scour monitoring devices is arranged along the circumference of the pile foundation.

9. The offshore wind power foundation with scour monitoring function of claim 8, wherein the position of the scour monitoring means in the length direction of the pile foundation is the height of the scour monitoring means, and the heights of the plurality of scour monitoring means are consistent.

10. Offshore wind power foundation with scour monitoring function according to claim 1, wherein the analysis means is an upper computer.

11. Offshore wind farm with scour monitoring function according to claim 1, wherein the signal transmitter is a wireless signal transmitter.

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