Floating photovoltaic cable laying device

Abstract

A kind of floating photovoltaic cable laying device, comprising: anchor soil slope, anchor soil slope is structured at water bank junction;Float array, one end of float array is anchored to the top of anchor soil slope, so that one end of float array is located on water surface, and the other end is located on the slope surface of the side of anchor soil slope towards water surface;And cable sleeve, cable sleeve is directly buried to the ground on the side of anchor soil slope away from water surface along the trend of anchor soil slope;Wherein, cable is laid in turn on float array and inside cable sleeve, and the height of laying conversion point position of cable sleeve and float array on slope surface is greater than the height of design highest water level.The utility model adopts economical and practical "floating+directly buried" combined cable laying mode, and effectively solves the problem that laying mode conversion point structure is easily affected by water level fluctuation, which leads to cable tension and water immersion.

Description

Technical Field

[0001] This utility model relates to a floating photovoltaic cable laying device, belonging to the field of waterborne photovoltaic power generation technology. Background Technology

[0002] The cables of floating photovoltaic power plants need to transmit electricity from the floating system to the land-based substation or grid connection point. This process must overcome challenges such as water level fluctuations, wind and wave pull, and aging caused by sun exposure. Therefore, the transition section of the cable from the water to the shore is one of the most vulnerable parts of the entire system and requires special design to ensure safety and reliability.

[0003] In existing technologies, this transition typically consists of two parts: first, a floating section on water where the cable drifts with the float, maintaining buoyancy and preventing it from sinking; and second, a shore-based fixed section where, upon entering land, it is either directly buried underground or laid on a cable tray to achieve a stable connection.

[0004] In the fixed section on the shore, cable trays are generally laid using overhead lines. However, overhead lines require the installation of poles and towers, which has the disadvantage of being limited by terrain and other factors. While direct burial is a more economical cable laying method, it is not practical for floating photovoltaic power stations due to factors such as water depth and terrain. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a floating photovoltaic cable laying device. This device can not only realize the economical and practical laying conversion of the cable from water to land, but also effectively solve the stress problem of the cable at the laying conversion point and prevent the cable from being submerged in water.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A floating photovoltaic cable laying device, comprising:

[0008] Anchored earth slopes are constructed at the water-shore boundary.

[0009] The float array has one end anchored to the top of the anchored earth slope, so that one end of the float array is on the water surface and the other end is on the slope of the anchored earth slope facing the water surface.

[0010] The cable conduit is buried directly along the direction of the anchoring slope to the ground on the side of the anchoring slope away from the water surface.

[0011] The cables are laid sequentially above the pontoon array and inside the cable conduit, and the height of the transition point between the cable conduit and the pontoon array on the slope is greater than the design maximum water level.

[0012] As a further optional design of this technical solution, the anchored slope includes the slope body and the anchor block set on the top of the slope body. The height of the slope body is greater than the design maximum water level, and the anchor block is fixedly connected to the float array by anchor rope.

[0013] As a further optional design of this technical solution, the top structure of the earth slope body is a platform, with anchor blocks placed symmetrically on both sides of the platform, and the middle of the platform corresponding to the cable laying position.

[0014] As a further optional design of this technical solution, the earthen slope body is constructed as a slope surface on all four sides. The slope ratio of the first slope surface on both sides along the cable routing direction is 1:2, and the slope ratio of the second slope surface on both sides perpendicular to the cable routing direction is 1:1.5.

[0015] As a further optional design of this technical solution, the surface of the first slope on one side for mounting the pontoon array is provided with a slope protection structure.

[0016] As a further optional design of this technical solution, the slope protection structure adopts hollow hexagonal block slope protection.

[0017] As a further optional design of this technical solution, at the laying transition point, the pipe opening of the cable conduit is raised so that the pipe opening height is greater than the design maximum water level.

[0018] As a further optional design of this technical solution, the cable conduit is a waterproof conduit.

[0019] With the above technical solution, the floating photovoltaic cable laying device of this utility model realizes a combined cable laying method of "floating + direct burial" by setting up a float array and cable sleeve, which is both economical and practical. In particular, the anchoring soil slope is used to raise the elevation of the cable laying method conversion point, avoiding the stress on the cable structure caused by water level fluctuations and effectively preventing the cable from being submerged in water.

[0020] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the planar structure of a floating photovoltaic cable laying device according to an embodiment of this utility model.

[0023] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0024] Figure 3 yes Figure 2A magnified schematic diagram of the structure at point B in the middle.

[0025] Explanation of the markings in the image:

[0026] 1-Anchored soil slope;

[0027] 11-Slope body; 111-Platform; 112-Slope surface; 1121-First slope surface; 1122-Second slope surface; 113-Slope protection structure; 1131-Hollow hexagonal block slope protection;

[0028] 12-Anchor block; 121-Anchor block and anchor ring; 122-Anchor rope;

[0029] 2-Float array;

[0030] 3-Cable sleeve;

[0031] 4-Cable. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0034] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0036] Figures 1 to 3 A schematic diagram of a preferred embodiment of the present invention is shown. Figure 1 This is a plan view of a floating photovoltaic cable laying device according to this embodiment. Figure 2 This is a cross-sectional view of a floating photovoltaic cable laying device according to this embodiment. Figure 3 This is a schematic diagram of the laying conversion point structure in a floating photovoltaic cable laying device according to this embodiment.

[0037] like Figure 1 and Figure 2As shown, this embodiment provides a floating photovoltaic cable laying device, including an anchoring slope 1 and a float array 2 (i.e., a cable conduit 3). The anchoring slope 1 is constructed at the water-shore boundary; one end of the float array 2 is anchored to the top of the anchoring slope 1, such that one end of the float array 2 is on the water surface, and the other end is located on the slope 112 of the anchoring slope 1 facing the water surface; the cable conduit 3 is buried directly along the direction of the anchoring slope 1 to the ground on the side of the anchoring slope 1 away from the water surface; the cable 4 is laid sequentially on the float array 2 and inside the cable conduit 3, and the height of the transition point between the cable conduit 3 and the float array 2 on the slope 112 is greater than the designed maximum water level.

[0038] In this embodiment, the float array 2 consists of multiple floating floats arranged in an array according to the designed shape and specifications, and then connected by ropes to form an integral structure. Typically, cables are laid on each floating float through cable fasteners.

[0039] In this embodiment, the cable is a collector cable for a photovoltaic power station.

[0040] This embodiment of a floating photovoltaic cable laying device utilizes a float array 2 to achieve floating laying of the cable 4 on water, and a cable conduit 3 to achieve direct burial laying of the cable 4 on land. An anchored slope 1 facilitates the switching between floating and direct burial laying methods. This embodiment not only achieves an economical and practical combined floating and direct burial cable laying method, but also, in particular, the floating laying includes a floating section on the water and a floating section on the slope. The floating section on the slope itself can prevent the cable from being submerged in water to a certain extent, while the anchored slope 1, which fixes the floating section on the slope, avoids cable tension caused by water level fluctuations at the laying transition point. Furthermore, because the laying transition point is designed and positioned on the slope 112 of the anchored slope 1 facing the water surface and at a height greater than the designed maximum water level, it is even more effective in preventing cable submersion.

[0041] Please refer to Figure 1 and Figure 2 The anchored slope 1 in this embodiment may include a slope body 11 and an anchor block 12 disposed on the top of the slope body 11. The height of the slope body 11 is greater than the designed maximum water level. The anchor block 12 is fixedly connected to the float array 2 by an anchor rope 122.

[0042] In practice, the earthen slope body 11 can be a mound of earth formed by artificially piling up soil, which is used to raise the elevation of the cable laying method conversion point, and at the same time, it also serves to extend the length of the floating laying section, achieving a dual effect of preventing cable immersion due to water level fluctuations.

[0043] In practice, anchor block 12 can be made of concrete. Its size and form can be determined according to the project needs. It must meet the anchoring requirements of the buoy, prevent the buoy from being carried away by waves, optimize the stress situation at the laying transition point, and absorb the displacement of the floating body to a certain extent, thereby reducing the risk of fatigue fracture of cable 4 at the landing point.

[0044] Please refer to Figure 1 In this embodiment, the top of the earth slope body 11 can be constructed as a platform 111, with anchor blocks 12 placed symmetrically on both sides of the platform 111, and the middle of the platform 111 corresponding to the laying position of the cable 4.

[0045] Please refer to Figure 1 In this embodiment, the earthen slope body 11 can be constructed as a slope structure on all four sides. The basic requirement for the slope design of the slope structure is to be able to build up the earthen slope. It is preferable to design the slope of the first slope where the cable is laid to be smaller to ensure that the cable can transition slowly.

[0046] Specifically, the slope ratio of the first slope 1121 on both sides along the cable routing direction is 1:2. This means that the slope of the anchoring soil slope 1 facing the water surface is one of the first slopes. The slope ratio of the second slope 1122 on both sides perpendicular to the cable routing direction is 1:1.5. Please refer to... Figure 1 In the preferred design of this embodiment, the surface of the first slope 1121 on one side for mounting the pontoon array 2 is provided with a slope protection structure 113.

[0047] More specifically, the slope protection structure 113 can be a hollow hexagonal block slope protection 1131, which is made of concrete hollow hexagonal bricks.

[0048] The setting of the slope protection structure 113, combined with the use of anchor blocks 12 to anchor the pontoons, enables the pontoon array 2 to be hung on the slope protection (i.e., stably positioned on the first slope surface 1121), while also being able to adapt to the undulation of the pontoons caused by water level fluctuations.

[0049] Please refer to Figure 3 In the preferred design of this embodiment, at the laying transition point, the opening of the cable conduit 3 is raised so that the opening height is greater than the designed maximum water level to prevent water from entering the cable conduit 3. At the same time, at this laying transition point, the angle of the first slope 1121 is used so that the cable 4 reaches the direct burial point from the water surface in an upward manner, which also prevents water from seeping into the cable conduit 3 along the cable and then flowing into and damaging the land-side equipment.

[0050] To further enhance water resistance, waterproof sleeves can be preferred for cable conduits 3. In practice, the installation of waterproof sleeves in direct burial installations avoids cable immersion problems caused by subsequent rises in water levels or terrain subsidence in the direct burial area.

[0051] Reference Figure 1 and Figure 2 The floating photovoltaic cable laying device of this embodiment can be constructed through the following steps:

[0052] 1) Construction of anchored earth slope 1: Artificial earth is piled up in the selected area to construct an earth slope, the backfill is compacted, anchor blocks 12 are placed on the top platform 111, and slope treatment is carried out on all sides.

[0053] 2) Excavate and fill the slope on the side of the casing to be directly buried, and pre-bury the waterproof casing;

[0054] 3) Place the float array 2 on the floating installation side of the earth slope and fix it to the anchor block and anchor ring 121 by anchor rope 122;

[0055] 4) Lay cable 4 on top of the float array 2 and in the waterproof sleeve.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A floating photovoltaic cable laying device, characterized in that, include: An anchored earthen slope, which is constructed at the water-shore boundary; A pontoon array, one end of which is anchored to the top of the anchored earthen slope, such that one end of the pontoon array is on the water surface and the other end is on the slope of the anchored earthen slope facing the water surface. The cable conduit is buried directly along the direction of the anchored soil slope to the ground on the side of the anchored soil slope away from the water surface. The cables are laid sequentially above the pontoon array and inside the cable conduit, and the height of the transition point between the cable conduit and the pontoon array on the slope is greater than the designed maximum water level.

2. A floating photovoltaic cable laying device according to claim 1, characterized in that, The anchored slope includes a slope body and an anchor block set on the top of the slope body. The height of the slope body is greater than the designed maximum water level. The anchor block is fixedly connected to the buoy array by anchor ropes.

3. The floating photovoltaic cable laying device according to claim 2, characterized in that, The top of the earthen slope is a platform, with anchor blocks placed symmetrically on both sides of the platform, and the middle of the platform corresponds to the cable laying position.

4. The floating photovoltaic cable laying device according to claim 3, characterized in that, The earthen slope body is constructed as a slope on all four sides. The slope ratio of the first slope on both sides along the cable routing direction is 1:2, and the slope ratio of the second slope on both sides perpendicular to the cable routing direction is 1:1.

5.

5. A floating photovoltaic cable laying device according to claim 4, characterized in that, The surface of the first slope on the side where the pontoon array is installed is provided with a slope protection structure.

6. A floating photovoltaic cable laying device according to claim 5, characterized in that, The slope protection structure uses hollow hexagonal blocks.

7. A floating photovoltaic cable laying device according to any one of claims 1 to 6, characterized in that, At the cable laying transition point, the cable conduit opening is raised so that the opening height is greater than the designed maximum water level.

8. A floating photovoltaic cable laying device according to any one of claims 1 to 6, characterized in that, The cable conduit is a waterproof conduit.

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