CN113684857B - Offshore wind power foundation with scouring monitoring function - Google Patents

Abstract

The invention discloses an offshore wind power foundation with a scour monitoring function. The offshore wind power foundation with a scour monitoring function includes a pile foundation, a scour monitoring device and an analysis device. The pile foundation includes a first a part and a second part, the first part is located above the sea level, the second part is located below the sea level and is at least partially buried in the seabed, the scour monitoring device is provided on the outer peripheral surface of the pile foundation, The scour monitoring device includes a light sensing component and a signal emitter, the light sensor is arranged on the second part, the signal emitter is used to receive the light change and send out a monitoring signal, the analysis device is connected with the The scour monitoring device is electrically connected for receiving and analyzing the monitoring signal sent by the scour monitoring device and judging the current scour state of the pile foundation according to the monitoring signal. The offshore wind power foundation with scour monitoring function of the present invention has the characteristics of simple and effective monitoring at any time.

Description

Offshore wind foundation with scour monitoring

technical field

The invention relates to the field of offshore wind power, in particular to an offshore wind power foundation with a scour monitoring function.

Background technique

As a clean and harmless renewable energy, wind energy has been paid more and more attention by human beings. Among them, compared with land wind energy, offshore wind energy resources not only have higher wind speeds, but also are farther away from the coastline, and are not affected by noise limits, allowing larger unit manufacturing.

The offshore wind power foundation with scour monitoring function is the key to supporting the entire offshore wind turbine, and the cost accounts for about 20% to 25% of the entire offshore wind power investment, and the accidents of offshore wind turbines are mostly caused by unstable pile foundations. Due to the action of waves and tidal currents, the sediment around the offshore wind power pile foundation will be scoured and form scour pits, which will have an impact on the stability of the pile foundation. In addition, the water flow mixed with sediment near the seabed surface continuously scours the pile foundation, corrodes and damages the surface of the pile foundation, and in serious cases, it will cause the collapse of the offshore wind turbine unit. However, the offshore wind power pile foundations are all buried in the seabed, and the erosion cannot be directly observed, and the pile foundation cannot be maintained in advance when the erosion is severe.

Contents of the invention

The present invention is based on the inventor's discovery and recognition of the following facts and problems:

In the actual application process, due to the action of sea waves and tides, seawater directly scours the offshore wind power pile foundation, and the impact force of seawater directly acts on the surface of the offshore wind power pile foundation, presenting a downward scrolling vortex structure, and the vortex structure will The sediment on the seabed is rolled up and further away from the place around the pile foundation, forming a scour pit. The formation of the scour pit exposes the part of the pile foundation buried below the seabed surface, affecting the stability of the pile foundation.

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the embodiment of the present invention proposes an offshore wind power foundation with a scour monitoring function that can monitor scour conditions at any time and provide effective early warning.

The offshore wind power foundation with scour monitoring function according to the present invention includes a pile foundation, a scour monitoring device and an analysis device, the pile foundation includes a first part and a second part connected to each other along its length direction, the first part is located at the Above the sea level, the second part is located below the sea level and is at least partially buried in the seabed, the seabed has a seabed surface, the scour monitoring device is arranged on the outer peripheral surface of the pile foundation, and the scour monitoring The device includes a light sensing component and a signal transmitter, the light sensing component is arranged on the second part and at least part of the light sensing component is located below the seabed surface, and the light sensing component is suitable for monitoring the light change at its location, the signal transmitter is arranged on the first part and connected with the light sensing component, the signal transmitter is used to receive the light change and send a monitoring signal, the analysis device It is electrically connected with the scour monitoring device for receiving and analyzing the monitoring signal sent by the scour monitoring device and judging the current scour state of the pile foundation according to the monitoring signal.

The offshore wind power foundation with scour monitoring function according to the present invention monitors the scour of sediment around the pile foundation by setting light sensors, and has the characteristics of simple and effective monitoring at any time.

In some embodiments, the light sensing component extends along the length direction of the pile foundation on the outer peripheral surface of the pile foundation.

In some embodiments, the light sensing component includes a plurality of light sensors, and the plurality of light sensors are arranged at intervals in the length direction of the pile foundation.

In some embodiments, at least one of said light sensors is located above said seabed surface.

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

In some embodiments, the distance between two adjacent light sensors decreases toward the seabed.

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

In some embodiments, there are multiple scour monitoring devices, and the multiple scour monitoring devices are arranged along the circumference of the pile foundation.

In some embodiments, the position of the scour monitoring device in the length direction of the pile foundation is the height of the scour monitoring device, and the heights of multiple scour monitoring devices are the same.

In some embodiments, the analysis device is a host computer.

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

Description of 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 signs:

Sea level 100, sea bed level 200,

Pile foundation 1 , first part 11 , second part 12 , scour monitoring device 2 , light sensor assembly 21 , light sensor 211 , protective cover 212 , and signal transmitter 22 .

Detailed ways

Embodiments of the invention will be described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The offshore wind power foundation with scour monitoring function according to the embodiment of the present invention will be described below according to FIG. 1 .

The offshore wind power foundation with scour monitoring function according to the present invention includes 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 along its length, the first part 11 is located above the sea level 100, the second part 12 is located below the sea level 100 and is at least partially buried in the seabed, the seabed has Seabed surface 200.

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

The scour monitoring device 2 is arranged on the outer peripheral surface of the pile foundation 1. The scour monitoring device 2 includes a light sensing component 21 and a signal transmitter 22. The light sensing component 21 is arranged on the second part 12 and at least part of the light sensing component 21 Located below the seabed surface 200, the light sensing component 21 is suitable for monitoring light changes at its location, the signal transmitter 22 is arranged on the first part 11 and connected with the light sensing component 21, and the signal transmitter 22 is used to receive light changes And send a monitoring signal, the analysis device is electrically connected with the scour monitoring device 2 for receiving and analyzing the monitoring signal sent by the scour monitoring device 2 and judging the current scour state of the pile foundation 1 according to the monitoring signal.

As shown in Figure 1, a scour monitoring device 2 is provided on the outer peripheral surface of the pile foundation 1, and the light sensing component 21 in the scour monitoring device 2 is arranged on the second part 12, and part of the light sensing component 21 follows the second part 12 is buried in the seabed downwards, part of the light sensing components 21 is located in the seawater above the seabed surface 200, when the seawater scours the pile foundation 1 to form a scour pit, the light sensing components 21 are exposed along with the second part 12 of the pile foundation 1 In seawater, the light sensing component 21 of this part monitors the light changes at its location, the light sensing component 21 is connected with the signal transmitter 22, and the signal transmitter 22 is arranged on the first part 11, so that the signal transmitter 22 is located at The sea level is above 100 to prevent seawater from interfering with the signal transmitter 22 and affecting the normal transmission of the signal. The signal transmitter 22 sends out the received light change signal. After receiving the monitoring signal, analyze and judge the scouring situation of the sediment around the pile foundation 1, so that the staff can check the scouring situation and maintain the pile foundation 1 in time

According to the offshore wind power foundation with the scour monitoring function of the present invention, by setting the light sensor 211, the light signal in the seawater and the light signal under the seabed are compared and analyzed, so that the formation of the scour pit can be judged by the change of the light signal, and then the surroundings of the pile foundation 1 can be monitored. The scouring situation of sediment has the characteristics of simple and effective monitoring at any time.

In some embodiments, the light sensing component 21 extends along the length direction of the pile foundation 1 on the outer peripheral surface of the pile foundation 1 . As shown in FIG. 1 , on the outer peripheral surface of the pile foundation 1 , light sensing components 21 are arranged vertically along the up and down direction, so as to monitor the erosion of the sediment around the pile foundation 1 .

In some embodiments, the light sensing component 21 includes a plurality of light sensors 211 , and the plurality of light sensors 211 are arranged at intervals along the length direction of the pile foundation 1 . As shown in Figure 1, a plurality of individual light sensors 211 are arranged on the light sensor assembly 21, and are used to monitor light changes in different positions. After the silt is washed away, the light sensor 211 under the silt is exposed. The light at the location will change, so as to monitor the erosion of sediment at the bottom of the pile foundation 1 .

In some embodiments, at least one light sensor 211 is located above the seabed surface 200 . Light sensors 211 at different positions can detect light signals at different positions. In order to ensure the contrast of light signals, one or more light sensors 211 are set in the range of seawater above 200 degrees above the seabed and below 100 degrees above the sea level for signal comparison. , to further enhance the reliability of the monitoring signal.

In some embodiments, the distance between adjacent light sensors 211 in the length direction of the pile foundation 1 is 3cm-10cm. A plurality of light sensors 211 are evenly spaced in the up and down direction to improve the accuracy of monitoring. Further, in order to prevent mutual interference between adjacent light sensors 211, the minimum distance between adjacent light sensors 211 in the up and down direction is 3cm , but too large a distance will affect the monitoring accuracy, so the maximum distance between 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 seabed surface 200 . The erosion of seawater on the pile foundation 1 gradually slows down with the depth of the pile foundation 1 buried in the seabed. Therefore, while ensuring the monitoring accuracy, the cost is saved. From the seabed surface 200 downwards, the installation density of the light sensors 211 gradually becomes smaller, that is The distance between adjacent light sensors 211 becomes gradually larger, which can enhance the monitoring capability and practicability of the offshore wind power foundation with scour monitoring function.

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

The erosion of seawater and sediment will cause greater wear and corrosion to the light sensor component 21, and the direct contact of the light sensor 211 with seawater and sediment will shorten the service life. In order to prolong the service life of the light sensor 211, the light sensor 211 The outer peripheral cover is provided with a protective cover 212, and the material of the protective cover 212 is a waterproof and transparent sealing material. While protecting the light sensor 211 from seawater erosion, it does not affect the reception of light by the light sensor 211. It is durable and prolongs its service life. .

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

The direction of the tidal current generated during the flow of seawater is uneven. Affected by the monsoon climate and the rotation of the earth, the circumference of the pile foundation 1 may be impacted by the tidal current to form scour pits. A scour monitoring device 2 can only monitor the flow in one direction. For the scouring situation of the pile foundation 1, in order to comprehensively monitor the scouring situation of the pile foundation 1, a plurality of scouring monitoring devices 2 are arranged in the circumferential direction of the pile foundation 1, and a plurality of scouring monitoring devices 2 are evenly spaced in the circumferential direction of the pile foundation 1 to improve monitoring quality.

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

When multiple scour monitoring devices 2 are installed in the circumferential direction of the pile foundation 1, in order to ensure the unity of monitoring signals, different scour monitoring devices 2 are all located on the same cross-sectional circle of the pile foundation 1, that is, different scour monitoring devices 2 are located on the pile foundation. 1 in the upper and lower directions, so that the positions of the light changes recorded by the light sensor 211 are consistent, preventing signal confusion and affecting the judgment of the staff.

In some embodiments, the analysis device is a host computer. The upper computer can be devices including but not limited to computers, mobile phones, tablets, panels, touch screens, etc.

In some embodiments, the signal transmitter 22 is a wireless signal transmitter. The pile foundation 1 is located in the ocean, and the signal transmitter 22 is arranged on the pile foundation 1. There are multiple pile foundations 1, and the distance between the signal transmitter 22 and the control room is relatively large. If it is used between the signal transmitter 22 and the control room The line is connected, and the line will corrode and age with the seawater, which will affect the signal transmission. Therefore, the signal transmitter 22 is mostly a wireless signal transmitter. The wireless signal transmitter has the characteristics of strong anti-interference ability and not easy to be corroded.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

As used herein, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean specific features, structures, materials, or features described in connection with the embodiment or example. A feature is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (6)

1. An offshore wind power foundation with a scour monitoring function, characterized in that it comprises: A pile foundation comprising a first portion interconnected along its length and a second portion, the first portion being located above sea level and the second portion being located below said sea level and being at least partially buried in the seabed , the seabed has a seabed surface; A plurality of scour monitoring devices, a plurality of scour monitoring devices are arranged on the outer peripheral surface of the pile foundation at intervals along the circumference of the pile foundation, The position of the scour monitoring device in the length direction of the pile foundation is the height of the scour monitoring device, and the heights of multiple scour monitoring devices are the same; The scour monitoring device includes a light sensing component and a signal transmitter, the light sensing component includes a plurality of light sensors, the light sensors are arranged on the second part and at least part of the light sensing component is located on the Below the seabed surface, the light sensor is suitable for monitoring light changes at its location, the signal transmitter is arranged on the first part and connected with the light sensing component, and the signal transmitter is used to receive the Changes in the above light and send out monitoring signals; An analysis device, the analysis device is electrically connected to the scour monitoring device for receiving and analyzing the monitoring signal sent by the scour monitoring device and judging the current scour state of the pile foundation according to the monitoring signal; The light sensing component extends along the length direction of the pile foundation on the outer peripheral surface of the pile foundation; The distance between two adjacent light sensors decreases toward the seabed; The light sensing component includes a plurality of light sensors, and the plurality of light sensors are arranged at intervals along the length direction of the pile foundation. 2. The offshore wind power foundation with scour monitoring function according to claim 1, characterized in that at least one of the light sensors is located above the seabed. 3. The offshore wind power foundation with scour monitoring function according to claim 2, characterized in that the distance between adjacent light sensors in the length direction of the pile foundation is 3cm-10cm. 4. The offshore wind power foundation with scour monitoring function according to any one of claims 1-3, wherein the light sensing component further comprises a protective cover, and the protective cover is made of a waterproof transparent sealing material. 5. The offshore wind power foundation with scour monitoring function according to claim 1, characterized in that the analysis device is a host computer. 6 . The offshore wind power foundation with scour monitoring function according to claim 1 , wherein the signal transmitter is a wireless signal transmitter.

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