CN115717405A

CN115717405A - Ice zone offshore photovoltaic anti-ice device, supporting structure and photovoltaic system

Info

Publication number: CN115717405A
Application number: CN202211427082.9A
Authority: CN
Inventors: 王昊; 赵业彬; 安杰; 许卫东; 杨华; 王勇; 王宇; 孟庆飞; 张积乐; 剧鹏鹏; 郭家沛
Original assignee: Shandong Electric Power Engineering Consulting Institute Corp Ltd
Current assignee: Shandong Electric Power Engineering Consulting Institute Corp Ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-02-28

Abstract

The invention provides an ice-region offshore photovoltaic anti-ice device, a supporting structure and a photovoltaic system, wherein the ice-region offshore photovoltaic anti-ice device comprises an inner protective layer and an outer protective layer which are concentrically sleeved, and an energy absorption layer is filled between the inner protective layer and the outer protective layer; the energy absorption layer comprises a plurality of layers of energy absorption mechanism arrays, and the energy absorption mechanisms of each layer are distributed circumferentially; the energy absorption mechanism is of a frame structure and has certain elasticity. The invention can prolong the service life of the pile foundation, reduce the subsequent operation and maintenance cost of the power station and reduce the engineering risk.

Description

Ice zone offshore photovoltaic anti-ice device, supporting structure and photovoltaic system

Technical Field

The invention belongs to the technical field of offshore engineering, and relates to an offshore photovoltaic anti-icing device, a supporting structure and a photovoltaic system for an ice area.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

Offshore light resources are abundant, and the offshore photovoltaic power station overcomes the defect of large land resource demand of the traditional photovoltaic power station and is developed rapidly. However, part of sea areas are frozen in winter for 3-4 months, and part of sea water is frozen, floating ice floating in the sea can be extruded and collided with an offshore photovoltaic pile foundation type foundation, so that the structure generates complex and sensitive dynamic response behaviors.

Disclosure of Invention

The invention provides an ice region offshore photovoltaic anti-ice device, a supporting structure and a photovoltaic system in order to solve the problems.

According to some embodiments, the invention adopts the following technical scheme:

an offshore photovoltaic anti-icing device for an ice area comprises an inner protection layer and an outer protection layer which are concentrically sleeved, wherein an energy absorption layer is filled between the inner protection layer and the outer protection layer;

the energy absorption layer comprises a plurality of layers of energy absorption mechanism arrays, and the energy absorption mechanisms of each layer are distributed on the circumference;

the energy absorption mechanism is of a frame structure and has certain elasticity.

As an alternative embodiment, the energy absorbing mechanism is a central symmetrical structure.

As an alternative embodiment, the energy absorbing mechanism includes horizontal connecting beams distributed along the circumferential direction, longitudinal restraining beams disposed on both sides of the horizontal connecting beams, transverse restraining beams connecting the longitudinal restraining beams on both ends of the same side, and longitudinal connecting beams disposed in the middle of the transverse restraining beams and connecting the side walls of the inner protective layer or the outer protective layer.

Further, the transverse restraint beam comprises two sections, wherein the two sections are connected, and two ends of each section are respectively connected with one side of the longitudinal restraint beam and the longitudinal connecting beam close to the side.

Furthermore, the longitudinal connecting beam and the longitudinal restraining beam are horizontally arranged and are both vertically arranged with the horizontal connecting beam.

As an alternative embodiment, each layer of energy-absorbing mechanism array comprises the same number of energy-absorbing mechanisms, and the energy-absorbing mechanisms of all layers are arranged in the same position.

As an alternative embodiment, the energy absorbing mechanisms of different layers are arranged in a staggered manner.

The utility model provides a supporting structure, includes pile foundation formula basis, and the cover is located the anti ice device of ice region marine photovoltaic on pile foundation formula basis, and the cover is established on pile foundation formula basis, be located anti ice device top and the stop device of below.

As an alternative embodiment, the upper limiting device is arranged at a height higher than the highest tide level, and the lower limiting device is arranged at a height lower than the lowest tide level.

A photovoltaic system comprising the above anti-ice device or support structure.

Compared with the prior art, the invention has the beneficial effects that:

the anti-ice device provided by the invention has the characteristics of light weight, high energy absorption and negative rigidity, can convert and absorb energy of the sea ice pile foundation, reduces the influence of shearing force on the pile foundation, has certain buoyancy, can adapt to the change of seawater level, dynamically adjusts the position, reduces the arrangement quantity on the pile body and reduces the cost.

The pile body of the supporting structure is provided with the limiting device, and the limiting device can be matched with the anti-ice device for use, so that the supporting structure not only can provide support for the photovoltaic panel, but also can limit the vertical displacement of the anti-ice device under the fluctuation of the tide level, and the anti-ice device is always positioned in a certain position interval. Through anti ice device and bearing structure, reducible sea ice is to the destruction of structure, reduces the safety risk, can provide good condition for photovoltaic power plant's operation.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic view of an energy absorber of the present embodiment;

FIG. 2 is a cross-sectional view of an energy absorber device of the present embodiment;

FIG. 3 is a block diagram of an energy absorbing mechanism of the present embodiment;

FIG. 4 is a longitudinal cross-sectional view of the energy absorbing mechanism of the present embodiment;

FIG. 5 is a transverse cross-sectional view of the energy absorbing mechanism of the present embodiment;

FIG. 6 is a multi-layer layout of the energy absorbing mechanism of the present embodiment;

FIG. 7 is a structural view of a stopper device of the present embodiment;

FIG. 8 is a view showing an installation structure of the stopper device of the present embodiment;

FIG. 9 is an effect diagram of the photovoltaic system of the present embodiment;

wherein: 1. a pile foundation type foundation; 2. a limiting device; 3. an anti-icing device; 4. an outer protective layer; 5. the energy absorption layer is used for absorbing the energy of the impact of the floating ice; 6. an inner protective layer; 7. a connecting bolt; 8. a longitudinal connecting beam; 9. a transverse restraint beam; 10. a longitudinal restraint beam; 11. the beam is horizontally connected.

Detailed Description

The invention is further described with reference to the following figures and examples.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Example one

An ice-region offshore photovoltaic anti-ice device is shown in figure 1, and an anti-ice device 3 comprises an outer protection layer 4, an energy absorption layer 5 and an inner protection layer 6.

As shown in fig. 2, in this embodiment, the outer protection layer 4 and the inner protection layer 6 are made of high density polyethylene, and are connected to each other to form a closed space to provide buoyancy for the anti-ice device 3, so that the anti-ice device can slide up and down along the outside of the pile foundation and always float on the sea surface, and simultaneously, the energy absorption layer 5 can shield the seawater from soaking, thereby improving the corrosive environment.

The energy absorption layer 5 is of a simple honeycomb structure, is used for absorbing the energy of the floating ice pile foundation and is formed by pouring viscoelastic material epoxy resin; the energy absorbing layer 5 comprises a plurality of layers, each layer comprising a plurality of circumferentially distributed energy absorbing mechanisms.

As shown in fig. 3, the energy absorbing mechanism comprises a longitudinal connecting beam 8, a transverse restraining beam 9, a longitudinal restraining beam 10 and a horizontal connecting beam 11, so that the whole structure is integrated. Horizontal tie-beam 11 is located central point and puts to it is the symmetry axis, and vertical tie-beam 8 distributes in its both sides, and horizontal tie-beam 11's both ends all link and have a vertical restraint roof beam 10, and vertical restraint roof beam 10's each end all with be close to the vertical tie-beam 8 of this end, through horizontal restraint roof beam 9 connection.

The outer protection layer 4 and the inner protection layer 6 are hard and rigid, the energy absorption layer 5 is made of a viscoelastic material and is soft and low in rigidity, and the two materials are combined to create a negative rigidity structure. The ice load is resisted through the protective layer when the external load is small, when the load is large, the energy absorption layer plays a role, the elastic buckling effect is achieved, large load can be borne, and meanwhile impact energy of the ice load on the pile foundation type foundation is consumed.

In the embodiment, the anti-ice device has the characteristics of light weight, high energy absorption and negative rigidity, can convert and absorb energy of the sea ice pile foundation, and reduces the influence of shearing force on the pile foundation. This foundation structure sets up the spacing ring, can avoid arranging on a large scale along foundation structure in certain difference of height within range with the motion restriction of anti ice device, reduce cost.

And the anti-ice device has certain buoyancy, slides along the foundation pile body, always floats on the sea surface, can adapt to the change of the seawater level and dynamically adjusts the position.

As shown in fig. 4 and 6, the energy absorbing mechanisms of the energy absorbing layer 5 may be arranged in an array, that is, the energy absorbing mechanisms at the same position on different layers are located in the same column.

Of course, in other embodiments, the energy absorbing mechanisms of different layers may be staggered.

Example two

A supporting structure, as shown in fig. 7, comprises a pile foundation 1, a limiting device 2 and an anti-ice device 3.

The pile foundation type foundation 1 can be a PHC (prestressed high-strength concrete) pipe pile or a steel pipe pile, and a platform is arranged on the pile top and used for placing a photovoltaic module and the like; the pile body is provided with an embedded part for installing the limiting device 2.

The limiting device 2 consists of an upper limiting ring and a lower limiting ring, the position of the limiting ring is confirmed according to project hydrological conditions, the elevation of the upper limiting ring is larger than the highest tide level, and the elevation of the lower limiting ring is lower than the lowest tide level and used for limiting the up-and-down moving range of the anti-icing device so that the anti-icing device is in a wave tide difference range. In this embodiment, the stop collar may be made of rubber or PE (polyethylene) material.

As shown in fig. 8, a connecting bolt 7 is provided for connecting the limiting ring with the pile foundation 1.

The anti-icing device 3 is arranged between the upper limiting ring and the lower limiting ring.

Of course, in other embodiments, the above materials may be replaced by other materials.

Through the mutual combination of the three-part structure, the shearing damage and the collision damage of the sea floating ice to the pile foundation type foundation can be reduced, the ice resistance of the pile foundation type foundation is improved, and the method is economical, reasonable and simple and convenient to construct.

EXAMPLE III

A photovoltaic system, as shown in fig. 9, includes the above-described support structure or anti-icing arrangement.

The photovoltaic system of this embodiment can reduce the damage of sea ice to the structure through anti ice device and bearing structure, reduces the safety risk, can provide good condition for photovoltaic power plant's operation.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims

1. An offshore photovoltaic ice-resistant device for an ice region is characterized by comprising an inner protective layer and an outer protective layer which are concentrically sleeved, wherein an energy absorption layer is filled between the inner protective layer and the outer protective layer;

the energy absorption layer comprises a plurality of layers of energy absorption mechanism arrays, and the energy absorption mechanisms of each layer are distributed circumferentially;

2. The offshore photovoltaic anti-ice device for ice regions according to claim 1, wherein the energy absorbing mechanism is a centrosymmetric structure.

3. The offshore photovoltaic ice-fighting device for the ice district as claimed in claim 1, wherein the energy-absorbing mechanism comprises horizontal connection beams distributed along the circumferential direction, longitudinal restraint beams arranged on both sides of the horizontal connection beams, transverse restraint beams connecting the longitudinal restraint beams on both ends of the same side, and longitudinal connection beams arranged in the middle of the transverse restraint beams and connecting the side walls of the inner protection layer or the outer protection layer.

4. The offshore photovoltaic ice-fighting device for the ice field in the sea according to claim 3, wherein the transverse restraining beam comprises two sections, the two sections are connected, and two ends of each section are respectively connected with one side of the longitudinal restraining beam and the longitudinal connecting beam close to the side.

5. The offshore photovoltaic ice-fighting device for ice regions according to claim 3, wherein the longitudinal connecting beams and the longitudinal restraining beams are horizontally arranged and are vertically arranged with the horizontal connecting beams.

6. The offshore photovoltaic ice-fighting device for the ice field according to claim 1, wherein each energy-absorbing mechanism array comprises the same number of energy-absorbing mechanisms, and the energy-absorbing mechanisms of each layer are arranged at the same position.

7. The offshore photovoltaic anti-ice device for the ice region as claimed in claim 1, wherein the energy absorbing mechanisms of different layers are arranged in a staggered manner.

8. The utility model provides a bearing structure, characterized by includes pile foundation formula basis, and the cover is located the anti ice device of ice district marine photovoltaic on pile foundation formula basis, and the cover is established on pile foundation formula basis, be located anti ice device top and the stop device of below.

9. A support structure as claimed in claim 8, wherein the upper retention means is arranged at a height greater than the highest tide level and the lower retention means is arranged at a height less than the lowest tide level.

10. A photovoltaic system comprising an anti-icing assembly according to any one of claims 1 to 7 or a support structure according to claim 8 or 9.