Wind erosion prevention device and method for pile foundation of desert photovoltaic power station

Abstract

The invention relates to the technical field of sand wind damage prevention of desert photovoltaic power stations, in particular to a wind erosion prevention device and method for a pile foundation of a desert photovoltaic power station. The device comprises a base used for being fixedly arranged around a pile foundation in a surrounding mode; the flange plate is arranged on the pile foundation in a sleeving manner; the pile foundation protection body is arranged on the windward side of the pile foundation in a housing shape, and the outer wall of the pile foundation protection body is in a streamline shape so that the wind direction can be guided to the two sides and the upper portion of the pile foundation protection body; the bottom and the top of the pile foundation protection body are respectively fixed on the base and the flange plate; the planting mechanism is arranged on the leeward side of the pile foundation, and the planting mechanism is used for planting creeping shrubs to fix accumulated sand. The wind direction can be guided to the upper portion and the two sides through the streamline pile foundation protection body so that the bottom of the pile foundation can be prevented from being eroded by wind, and therefore the stability of the whole pile foundation and safe operation of a photovoltaic module are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of preventing wind and sand hazards in desert photovoltaic power stations, and in particular to a device and method for preventing wind erosion of pile foundations in desert photovoltaic power stations. Background Art

[0002] The construction process of desert photovoltaic power stations is easily affected by wind and sand hazards, especially in the early stage of photovoltaic panel installation, pile foundations need to be installed first. Under the action of strong wind from the main wind direction, wind erosion will occur on the windward side of the pile foundation, and vortex dunes will form on the leeward side, which will affect the stability of the pile foundation. In severe cases, stress damage will be caused to the photovoltaic components, affecting the safe production of the photovoltaic power station and creating great safety hazards. There is currently no systematic control plan. Summary of the invention

[0003] The purpose of the present invention is to provide a device and method for preventing wind erosion of pile foundations of a desert photovoltaic power station, so as to solve the technical problems raised in the above-mentioned background technology.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention provides a wind erosion prevention device for a pile foundation of a desert photovoltaic power station, comprising:

[0006] A base, used for fixing around the pile foundation;

[0007] A flange plate is sleeved on the pile foundation;

[0008] The pile foundation protection body is arranged in a shell shape on the windward side of the pile foundation, and the outer wall of the pile foundation protection body is streamlined to guide the wind direction to both sides and the top of the pile foundation protection body; the bottom and the top of the pile foundation protection body are respectively fixed to the base and the flange;

[0009] A planting mechanism is arranged on the leeward side of the pile foundation, and is used for planting creeping shrubs to fix accumulated sand.

[0010] In an optional embodiment, the base includes a hoop-shaped connection structure, and the connection structure is used to be tightly fixed on the pile foundation.

[0011] In an optional embodiment, bolt seats are provided at positions of the base located on both sides of the pile foundation, and the left and right sides of the pile foundation protection body are fixedly connected to the bolt seats on both sides of the base through bolt fasteners respectively.

[0012] In an optional embodiment, the creeping shrub is a shade-tolerant shrub.

[0013] In an optional embodiment, the pile foundation protection body is made of a PVC material with a smooth surface, and a counterweight portion is provided on the inner wall of the pile foundation protection body.

[0014] In an optional embodiment, the counterweight portion includes a left counterweight portion and a right counterweight portion respectively arranged on the left and right sides of the inner wall of the pile foundation protection body.

[0015] In an optional embodiment, a mounting seat is also provided on the base, a guide rail is provided inside the mounting seat, a slider is installed on the guide rail, a first adsorption portion is provided on the top of the slider, a second adsorption portion is provided on the bottom of the left counterweight portion and the right counterweight portion, and the first adsorption portion and the second adsorption portion are adsorbed and cooperated with each other; wind speed sensors are provided on the left and right sides of the outer wall of the pile foundation protective body.

[0016] In an optional embodiment, the guide rail includes a screw rod, and the slider includes a mover cooperating with the screw rod. The position of the mover can be adjusted by driving the screw rod to rotate so that the first adsorption part and the second adsorption part on the left counterweight part or the right counterweight part are adsorbed and cooperated.

[0017] In an optional embodiment, the first adsorption part and the second adsorption part are magnets.

[0018] In a second aspect, the present invention provides a method for preventing wind erosion of a pile foundation of a desert photovoltaic power station, which is performed using the aforementioned device for preventing wind erosion of a pile foundation of a desert photovoltaic power station, and the method comprises:

[0019] Step S1, installing the base and the flange on the pile foundation;

[0020] Step S2, fixing the pile foundation protection body to the base and the flange;

[0021] Step S3: using the outer wall of the pile foundation protection body to guide the wind to both sides and upward thereof to avoid wind erosion at the bottom of the pile foundation.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention can guide the wind direction upward and to both sides through the streamlined pile foundation protection body to avoid wind erosion of the bottom of the pile foundation, thereby ensuring the stability of the entire pile foundation and the safe operation of the photovoltaic module.

[0024] 2. The present invention can effectively fix a small amount of accumulated sand by installing creeping shrubs on the leeward side of the pile foundation, thereby avoiding the formation of a sand accumulation body on the leeward side. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The schematic diagram shows that the pile foundation in the prior art is prone to form wind erosion pits on the windward side and sand accumulation on the leeward side.

[0026] Figure 2This is a schematic structural diagram of a wind erosion prevention device for a desert photovoltaic power station pile foundation in Example 1;

[0027] Figure 3 for Figure 2 A schematic diagram of the structure from another perspective;

[0028] Figure 4 for Figure 2 Another structural diagram at another time;

[0029] Figure 5 for Figure 2 Schematic diagram of a top-down perspective;

[0030] Figure 6 for Figure 2 A structural schematic diagram of the partial structure of a pile foundation wind erosion protection device for a desert photovoltaic power station. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] Among the prior arts known to the inventor of this application, Figure 1 After the pile foundation is installed, under the influence of wind, wind erosion pits are easily formed on the windward side of the pile foundation, while sand accumulation is easily formed on the leeward side, which will cause stress damage to the photovoltaic modules, affect the safe production of the photovoltaic power station, and create great safety hazards.

[0033] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0034] Example 1

[0035] As attached Figure 2-5 As shown, this embodiment provides a wind erosion prevention device for a pile foundation of a desert photovoltaic power station, which is used to be arranged near a pile foundation 1. The wind erosion prevention device specifically includes a base 2, a flange 3, a pile foundation protection body 4 and a planting mechanism.

[0036] The base 2 is used to surround the pile foundation 1 and is installed on the ground through a fixing member; in a specific embodiment, the base 2 is provided with an annular connection structure 6 to surround the pile foundation 1. To facilitate on-site installation, the connection structure 6 can be clamped on the pile foundation 1 in the form of a hoop. To further prevent the connection structure 6 from deflecting on the pile foundation 1, a limit ring can usually be glued on the upper and lower sides of the connection structure 6 to ensure the stable positioning of the entire base 2.

[0037] The flange 3 is used to be sleeved on the pile foundation 1; the flange 3 is used as a basis for the subsequent installation and fixing of the pile foundation protection body 4. The pile foundation protection body 4 is arranged on the windward side of the pile foundation 1 in a shell shape, and the outer wall of the pile foundation protection body 4 is streamlined to guide the wind direction to both sides and above; the pile foundation protection body 4 is a hollow structure, like a cover, covering the surface of the quicksand. Through the streamlined structural characteristics, the local wind can be guided to the sides and above of the pile foundation protection body 4, thereby preventing the quicksand surface on the windward side of the pile foundation 1 from being eroded by wind. In a specific embodiment, the material of the pile foundation protection body 4 can be selected to use a smooth PVC material, and through the streamlined shape, the wind is guided to the top and side to bypass the main body of the pile foundation 1 to avoid wind erosion. The bottom and top of the pile foundation protection body 4 are respectively fixed on the base 2 and the flange 3, and usually the bottom and top of the pile foundation protection body 4 are fixedly connected by bolt connectors.

[0038] The planting mechanism is arranged on the leeward side of the pile foundation 1, and is used to plant creeping shrubs to fix the accumulated sand. In a specific embodiment, the creeping shrubs are low creeping shrubs, such as shade-tolerant shrubs such as Nitraria sibiricum.

[0039] In conjunction with the working principle of the wind erosion prevention device described in this embodiment, this embodiment plants low creeping shrubs at locations where sand accumulation is likely to form. A pile foundation protection body 4 is installed at locations where wind erosion pits are likely to form. Low creeping shrubs can effectively fix a small amount of accumulated sand. The pile foundation protection body 4 can effectively form a protective cover, which can affect the local wind speed and flow field by changing the micro-topography, and completely prevent and control wind erosion hazards.

[0040] In another specific embodiment, the base 2 is provided with bolt seats 5 at both sides of the pile foundation 1, and the left and right sides of the pile foundation protection body 4 are fixedly connected to the bolt seats 5 on both sides of the base 2 by bolt fasteners. The pile foundation protection body 4 can be stably installed at the desired position by bolting. However, in actual long-term use, since the pile foundation protection body 4 plays a role in guiding the wind direction, the flow velocity at the outer wall of the pile foundation protection body 4 is large and the pressure is small, which causes the pile foundation protection body 4 to have a tendency to move upward, and it is particularly obvious when it is used for a long time. In addition, since the wind and sand erosion in desert areas is more serious, the bolt connection at the bottom of the pile foundation protection body 4 is easily damaged, resulting in failure of wind erosion protection.

[0041] Combination Figure 3 and Figure 6 Therefore, in this embodiment, a counterweight is provided on the inner wall of the pile foundation protection body 4, and the counterweight can be directly filled with sand in the desert area, or other materials can be transported for counterweight. The counterweight can effectively prevent the pile foundation protection body 4 from being damaged by wind.

[0042] The counterweight part includes a left counterweight part 7 and a right counterweight part 8 respectively arranged on the left and right sides of the inner wall of the pile foundation protection body 4. In this embodiment, the left counterweight part 7 and the right counterweight part 8 can ensure that the pile foundation protection body 4 as a whole maintains a downward trend to resist the force brought by the wind. However, the streamlined outer wall of the pile foundation protection body 4 can guide the local wind to the two sides and the top of the pile foundation protection body 4. Due to the complex wind direction environment in the desert area, there will be a situation in which the wind direction is obviously biased to one of the left or right sides for a period of time in the desert environment. This will cause the force imbalance of the entire pile foundation protection body 4. The risk of the pile foundation protection body 4 on one side with an upward trend under the action of wind to move upward and damage the bolt connection will increase significantly, and this damage will accumulate, which will seriously affect the service life of the pile foundation protection body 4 in the desert environment. Since manual maintenance in the desert environment is difficult, once damage occurs, it is difficult to repair it in time.

[0043] Therefore, the base 2 in this embodiment is also provided with a mounting seat 9, a guide rail is provided inside the mounting seat 9, a slider is installed on the guide rail, a first adsorption portion 10 is provided on the top of the slider, and a second adsorption portion 11 is provided at the bottom of the left counterweight portion 7 and the right counterweight portion 8, and the first adsorption portion 10 and the second adsorption portion 11 are mutually adsorbed and matched; the left and right sides of the outer wall of the pile foundation protection body 4 are provided with wind speed sensors to detect the left wind speed and the right wind speed respectively. Within a preset period of time, if the cumulative time when the difference between the wind speed on the first side and the wind speed on the second side is greater than the preset threshold value exceeds the preset proportion of the preset period of time, the slider is moved along the guide rail to the bottom of the first side to adsorb the second adsorption portion 11 through the first adsorption portion 10, thereby resisting the force generated by the wind speed, and thus maintaining the force balance of the entire pile foundation protection body 4. When the above conditions are not met within the next preset time period, the slider returns to its original position to maintain its original posture. The above automatic control can better realize unmanned maintenance of the pile foundation protection body 4 and can significantly weaken the impact on the life of the pile foundation protection body 4 under extreme conditions, thereby significantly extending the service life of the pile foundation protection body 4.

[0044] In a specific embodiment, the guide rail includes a screw rod, and the slider includes a mover that cooperates with the screw rod. The position of the mover can be adjusted by driving the screw rod to rotate, so that the first adsorption portion 10 and the second adsorption portion 11 on the left counterweight portion 7 or the right counterweight portion 8 are adsorbed and matched. The position of the first adsorption portion 10 can be controlled by controlling the rotation of the screw rod, so as to maintain the force balance of the pile foundation protection body 4 as much as possible to extend the service life. In the actual arrangement process, in order to avoid wind and sand erosion, a protective sealing layer can be provided on the mounting seat 9 to ensure the normal operation of the screw rod.

[0045] In another specific embodiment, the first adsorption part 10 and the second adsorption part 11 are magnets, which can be permanent magnets or electromagnets. The electromagnet can also control the adsorption force through electric current, so as to more finely adjust the force balance on the left and right sides of the pile foundation protection body 4 to avoid wind damage.

[0046] Example 2

[0047] A method for preventing wind erosion of a pile foundation 1 of a desert photovoltaic power station is performed using the device for preventing wind erosion of a pile foundation of a desert photovoltaic power station described in Example 1, and the method comprises:

[0048] Step S1, installing the base 2 and the flange 3 on the pile foundation 1;

[0049] Step S2, fixing the pile foundation protection body 4 to the base 2 and the flange 3;

[0050] Step S3: using the outer wall of the pile foundation protection body 4 to guide the wind to both sides and upward thereof to avoid wind erosion at the bottom of the pile foundation 1.

[0051] The above method can be used to maintain the pile foundation protection body 4 through unmanned management, and can significantly increase the service life of the entire wind erosion protection device.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A wind erosion prevention device for pile foundation of a desert photovoltaic power station, characterized in that: include: A base (2) is used for being fixed around the pile foundation (1); A flange (3) is sleeved on the pile foundation (1); The pile foundation protection body (4) is arranged in a shell-like shape on the windward side of the pile foundation (1), and the outer wall of the pile foundation protection body (4) is streamlined to guide the wind direction to both sides and the top of the pile foundation protection body (4); the bottom and the top of the pile foundation protection body (4) are respectively fixed on the base (2) and the flange (3); A planting mechanism is arranged on the leeward side of the pile foundation (1), and is used for planting creeping shrubs to fix accumulated sand.

2. The desert photovoltaic power station pile foundation wind erosion protection device according to claim 1, characterized in that: The base (2) comprises a hoop-shaped connection structure (6), and the connection structure (6) is used for clamping and fixing on the pile foundation (1).

3. The anti-wind erosion device for pile foundation of desert photovoltaic power station according to claim 1, characterized in that: Bolt seats (5) are provided at positions on both sides of the base (2) located on the pile foundation (1), and the left and right sides of the pile foundation protection body (4) are fixedly connected to the bolt seats (5) on both sides of the base (2) by bolt fasteners.

4. The desert photovoltaic power station pile foundation wind erosion protection device according to claim 1, characterized in that: The creeping shrub is a shade-tolerant shrub.

5. The desert photovoltaic power station pile foundation wind erosion protection device according to claim 1, characterized in that: The material of the pile foundation protection body (4) is a PVC material with a smooth surface, and a counterweight portion is provided on the inner wall of the pile foundation protection body (4).

6. The wind erosion prevention device for pile foundation of desert photovoltaic power station according to claim 5, characterized in that: The counterweight part comprises a left counterweight part (7) and a right counterweight part (8) which are respectively arranged on the left and right sides of the inner wall of the pile foundation protection body (4).

7. The wind erosion prevention device for pile foundation of desert photovoltaic power station according to claim 6, characterized in that: The base (2) is also provided with a mounting seat (9), a guide rail is provided inside the mounting seat (9), a slider is installed on the guide rail, a first adsorption portion (10) is provided on the top of the slider, a second adsorption portion (11) is provided on the bottom of the left counterweight portion (7) and the right counterweight portion (8), and the first adsorption portion (10) and the second adsorption portion (11) are mutually adsorbed and matched; and wind speed sensors are provided on the left and right sides of the outer wall of the pile foundation protection body (4).

8. The wind erosion prevention device for pile foundation of desert photovoltaic power station according to claim 7, characterized in that: The guide rail comprises a screw rod, and the slider comprises a mover cooperating with the screw rod. The position of the mover can be adjusted by driving the screw rod to rotate, so that the first adsorption portion (10) and the second adsorption portion (11) on the left counterweight portion (7) or the right counterweight portion (8) are adsorbed and matched.

9. The wind erosion prevention device for pile foundation of desert photovoltaic power station according to claim 7, characterized in that: The first adsorption part (10) and the second adsorption part (11) are magnets.

10. A method for preventing wind erosion of pile foundations of a desert photovoltaic power station, characterized in that: The method is carried out by using the desert photovoltaic power station pile foundation wind erosion protection device according to any one of claims 1 to 9, the method comprising: Step S1, installing the base (2) and the flange (3) on the pile foundation (1); Step S2, fixedly connecting the pile foundation protection body (4) to the base (2) and the flange (3); Step S3: using the outer wall of the pile foundation protection body (4) to guide the wind to the sides and upward thereof to avoid wind erosion at the bottom of the pile foundation (1).

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