Pendulum clock type flexible photovoltaic double-layer film linkage greenhouse

Abstract

The invention provides a pendulum clock type flexible photovoltaic double-layer film linkage greenhouse. The greenhouse comprises a greenhouse body structure, a heat preservation and light conversion EVA film, a shadowless film, a photovoltaic panel, a pendulum clock type moving assembly and a photovoltaic panel linkage mechanism. Wherein the cross section of the greenhouse main body structure is composed of a plurality of arch structures arranged side by side; the heat preservation and light conversion EVA film and the shadowless film are both arranged on the greenhouse main body structure, the heat preservation and light conversion EVA film is located on the outer side of the shadowless film, and an interlayer structure is formed between the shadowless film and the heat preservation and light conversion EVA film; the photovoltaic panels are arranged in the sandwich structures, the pendulum clock type moving assembly is connected with the photovoltaic panels and used for driving the photovoltaic panels to move in the sandwich structures along an arc track, and the photovoltaic panels in the adjacent arch structures are connected through the photovoltaic panel linkage mechanism so that the photovoltaic panels can move synchronously.

Description

Technical Field

[0001] The present invention relates to the technical field of greenhouse cultivation, and in particular to a double-layer film linkage greenhouse with a pendulum-type flexible photovoltaic system. Background Art

[0002] A photovoltaic agricultural greenhouse is a greenhouse that integrates solar photovoltaic power generation, an intelligent temperature control system, and modern high-tech cultivation. The greenhouse uses a steel skeleton, and solar photovoltaic modules are covered on the greenhouse to ensure solar photovoltaic power generation while also ensuring the lighting requirements of crops in the entire greenhouse. The electricity generated by solar photovoltaic can support the irrigation system of the greenhouse, supplement light to plants, solve the heating demand in winter in the greenhouse, increase the temperature of the greenhouse, and promote the rapid growth of crops. Land use advantage: Photovoltaic power generation on the shed, ecological breeding and planting under the shed, improving the comprehensive utilization rate of land. However, in the existing photovoltaic agricultural greenhouses, the light is intense during the day, which will inhibit the photosynthesis of plants, affect the growth and maturity of plants, and overly intense light will instead accelerate the transpiration of plants, causing the stored water to quickly evaporate, which is not conducive to plant growth. And sunlight cannot be completely absorbed and utilized by plants. Based on the above technical problems, there is an urgent need for a double-layer film linkage greenhouse with a pendulum-type flexible photovoltaic system to solve. Summary of the Invention

[0003] In view of this, an embodiment of the present invention provides a double-layer film linkage greenhouse with a pendulum-type flexible photovoltaic system, including a greenhouse main structure, a heat-insulating and light-converting EVA film, a shadowless film, a photovoltaic panel, a pendulum-type moving assembly, and a photovoltaic panel linkage mechanism;

[0004] Among them, the cross-section of the greenhouse main structure is a plurality of side-by-side arched structures;

[0005] The heat-insulating and light-converting EVA film and the shadowless film are both arranged on the greenhouse main structure, the heat-insulating and light-converting EVA film is located outside the shadowless film, and a sandwich structure is formed between the shadowless film and the heat-insulating and light-converting EVA film;

[0006] The photovoltaic panel is arranged in the sandwich structure, and the pendulum-type moving assembly is connected to the photovoltaic panel for driving the photovoltaic panel to move along an arc trajectory in the sandwich structure, and the photovoltaic panels in adjacent arched structures are connected by the photovoltaic panel linkage mechanism so that the photovoltaic panels move synchronously.

[0007] In one embodiment, the pendulum-type moving assembly includes a reduction motor, a swing rod, a photovoltaic panel bracket, and an arc-shaped guide rail;

[0008] The arc-shaped guide rail is installed inside the sandwich structure, and the photovoltaic panel is installed on the photovoltaic panel bracket. The photovoltaic panel bracket is slidably connected to the arc-shaped guide rail so that the photovoltaic panel bracket can drive the photovoltaic panel to move along the arc-shaped guide rail;

[0009] One end of the swing rod is fixedly connected to the photovoltaic panel bracket, and the other end of the swing rod is connected to the output shaft of the reduction motor. The reduction motor is used to drive the swing rod to rotate around its output shaft.

[0010] In one embodiment, the photovoltaic panel linkage mechanism includes a first connecting rod and a second connecting rod. The two ends of the first connecting rod are respectively hinged to adjacent swing rods, and the two ends of the second connecting rod are respectively hinged to adjacent swing rods. The first connecting rod and the second connecting rod are arranged in a cross manner.

[0011] In one embodiment, the heat-insulating and light-converting EVA film has an ethylene-vinyl acetate copolymer substrate and a heat-insulating layer structure. A heat-insulating agent is arranged inside the heat-insulating layer structure. The heat-insulating and light-converting EVA film is used to convert ultraviolet light in natural light into infrared light beneficial to plant growth.

[0012] In one embodiment, the shadowless film has an anti-reflection outer layer, a microbubble intermediate layer and an anti-reflection inner layer, and is used to reduce the shadows inside the main structure of the greenhouse.

[0013] In one embodiment, the photovoltaic panel is of an arc-shaped structure, and the area of the photovoltaic panel does not exceed 1 / 2 of the top surface area of the main structure of the greenhouse.

[0014] In one embodiment, the movable angle of the photovoltaic panel is between 45° and 135°.

[0015] In one embodiment, the pendulum-type moving assembly drives the photovoltaic panel to move as the sun moves, so that the photovoltaic panel receives direct sunlight.

[0016] In one embodiment, a two-way fan is arranged on the main structure of the greenhouse. One end of the two-way fan is communicated with the planting area inside the shadowless film, and the other end of the two-way fan is communicated with the external space of the main structure of the greenhouse.

[0017] In one embodiment, a water storage pool, a heating pool and a black energy storage water pipe are arranged outside the main structure of the greenhouse; the water storage pool is used to collect the precipitation on the heat-insulating and light-converting EVA film.

[0018] The pendulum-type flexible photovoltaic double-layer film linkage greenhouse in the embodiments of the present invention has the following technical effects:

[0019] 1. By installing photovoltaic panels in the sandwich structure of the greenhouse, the top space of the greenhouse can be fully utilized for photovoltaic power generation, improving the land utilization efficiency. The photovoltaic panels can move along an arc trajectory within the sandwich structure as the sun's position changes, thus always maintaining the best angle with sunlight and maximizing the photovoltaic power generation efficiency.

[0020] 2. The heat-insulating light-converting EVA film is located outside the shadowless film, forming a double-layer film structure. This design not only enhances the heat-insulating performance of the greenhouse but also effectively blocks the impact of adverse weather outside on the internal environment of the greenhouse. The heat-insulating light-converting EVA film has a light-converting function and can convert part of the ultraviolet rays into visible light or spectra that plants can utilize, promoting plant growth.

[0021] 2. The pendulum-type moving component is connected to the photovoltaic panel, enabling the flexible movement of the photovoltaic panel within the sandwich structure. This design allows the photovoltaic panel to automatically adjust the angle according to the change of the sun's position, improving the flexibility and efficiency of photovoltaic power generation. The photovoltaic panels in adjacent arched structures are connected by a photovoltaic panel linkage mechanism, achieving the synchronous movement of the photovoltaic panels. This linkage mechanism not only simplifies the control logic of the photovoltaic panels but also improves the stability and reliability of the entire system.

[0022] 4. The main structure of the greenhouse adopts multiple side-by-side arched structures, which makes the greenhouse structure stable and able to withstand large snow and wind loads. The double-layer film structure and the moving components of the photovoltaic panels are both designed to be easily disassembled and replaced, reducing the maintenance cost and time of the greenhouse.

[0023] The additional advantages, objectives, and features of the present invention will be partially described below and will become partially apparent to those of ordinary skill in the art after studying the following text, or can be learned from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the specification and the drawings.

[0024] Those skilled in the art will understand that the objectives and advantages that can be achieved by the present invention are not limited to the above specific descriptions, and the above and other objectives that the present invention can achieve will be more clearly understood according to the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and do not limit the present invention. The components in the drawings are not drawn to scale but are only for showing the principles of the present invention. To facilitate showing and describing some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, may become larger relative to other components in the exemplary device actually manufactured according to the present invention.

[0026] Figure 1Schematic cross-sectional view of the greenhouse structure in an embodiment of the present invention.

[0027] Figure 2 Schematic diagram of the position of the photovoltaic panel at the 9 o'clock position in the single-span structure of the greenhouse in an embodiment of the present invention.

[0028] Figure 3 Schematic diagram of the position of the photovoltaic panel at the 12 o'clock position in the single-span structure of the greenhouse in an embodiment of the present invention.

[0029] Figure 4 Schematic diagram of the position of the photovoltaic panel at the 3 o'clock position in the single-span structure of the greenhouse in an embodiment of the present invention.

[0030] Reference numerals: 1, main greenhouse structure; 2, heat-insulating and light-converting EVA film; 3, shadowless film; 4, photovoltaic panel; 5, two-way fan; 6, first connecting rod; 7, second connecting rod; 8, swinging rod; 9, clear water pool; 10, heating water pool; 11, black energy storage water pipe. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the implementation manners and the drawings. Herein, the illustrative implementation manners of the present invention and their descriptions are used to explain the present invention, but do not limit the present invention.

[0032] Herein, it should also be noted that in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present invention are shown in the drawings, while other details less related to the present invention are omitted.

[0033] It should be emphasized that the term "including / containing" when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0034] Herein, it should also be noted that if not otherwise specified, the term "connection" in this article can not only refer to direct connection, but also represent indirect connection with an intermediate.

[0035] In the following, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0036] Existing greenhouses have technical bottlenecks such as uneven light caused by fixed shading of photovoltaic panels, difficulty in controlling high temperatures in summer, and insufficient heat preservation in winter. Traditional PO films have problems such as low utilization rate of ultraviolet rays, fast infrared radiation heat dissipation, and uneven light distribution; the simple superposition mode of photovoltaic agriculture is difficult to balance power generation efficiency and crop growth requirements. Photovoltaic panels are affected by wind, rain, snow, etc., which affects power generation efficiency, and the photovoltaic panels need to be frequently cleaned. Photovoltaic panels cannot move or track sunlight, and cannot achieve the maximum power generation rate of photovoltaic panels; traditional sunshade nets are fixed and cannot dynamically solve the shading problem; traditional direct sunlight focuses on plant leaves or the ground to form obvious dark spots, posing a risk of high-temperature burns.

[0037] Refer to Figure 1 , in view of the above technical problems, the embodiments of the present invention provide a double-layer film linkage greenhouse with a pendulum-type flexible photovoltaic, including a greenhouse main structure 1, a heat-preserving and light-converting EVA film 2, a shadowless film 3, a photovoltaic panel 4, a pendulum-type moving component, and a photovoltaic panel linkage mechanism; wherein, the cross-section of the greenhouse main structure 1 is a plurality of side-by-side arched structures; the heat-preserving and light-converting EVA film 2 and the shadowless film 3 are both arranged on the greenhouse main structure 1, the heat-preserving and light-converting EVA film 2 is located outside the shadowless film 3, and a sandwich structure is formed between the shadowless film 3 and the heat-preserving and light-converting EVA film 2; the photovoltaic panel 4 is arranged in the sandwich structure, and the pendulum-type moving component is connected to the photovoltaic panel 4 and is used to drive the photovoltaic panel 4 to move along an arc trajectory in the sandwich structure, and the photovoltaic panels 4 in adjacent arched structures are connected by a photovoltaic panel linkage mechanism so that the photovoltaic panels 4 move synchronously.

[0038] It should be noted that a super heat-preserving and light-converting EVA PO film is used on the outer layer of the greenhouse. This heat-preserving and light-converting EVA film 2 integrates multiple technologies. For example, in the light-converting technology: using nano-level light-converting materials, ultraviolet rays of 280 - 400nm are converted into red light of 600 - 700nm (conversion rate ≥ 85%). The light sources required by plants are 400 - 700nm, and the light sources required by photovoltaic panels are 200 - 1100nm. The red light converted by the heat-preserving and light-converting EVA film 2 can be utilized by both plants and photovoltaic panels. Heat-preserving structure: EVA substrate + multi-layer aerogel composite, infrared barrier rate > 90%, night-time temperature rise of 3 - 5°C. Its optical parameters are: light transmittance ≥ 90%, ultraviolet transmittance < 1%, anti-ultraviolet aging life > 5 years. A shadowless film 3 is used on the inner layer of the greenhouse, and it has a shadowless structure inside: a microbubble array with a diameter of 10 - 50μm (density 5×10^4 / cm 2 ), the light uniformity is increased by 40%, part of the direct light is scattered, the light intensity is reduced, and local high-temperature burns of crops are avoided. This film has a cooling system: an infrared reflection coating (reflection rate > 85%) + an air heat-insulating layer (thermal conductivity 0.018W / m·K). The functions of this film integrate an anti-fogging coating (contact angle > 150°), antistatic treatment (surface resistance 10^9Ω), and other technologies.

[0039] In the above embodiment, by arranging photovoltaic panels in the sandwich structure of the greenhouse, the top space of the greenhouse can be fully utilized for photovoltaic power generation, thereby improving the utilization efficiency of land. The photovoltaic panels can move along an arc track in the sandwich structure as the position of the sun changes, thereby always maintaining the best angle with the sunlight and maximizing the efficiency of photovoltaic power generation.

[0040] The heat-insulating and light-converting EVA film is located on the outside of the shadowless film, forming a double-layer film structure. This design not only enhances the heat preservation performance of the greenhouse, but also effectively blocks the impact of adverse weather on the internal environment of the greenhouse. The heat-insulating and light-converting EVA film has a light-converting function, which can convert part of the ultraviolet rays into visible light or a spectrum that can be used by plants, promoting plant growth.

[0041] The pendulum-shaped moving assembly is connected to the photovoltaic panel, which enables the photovoltaic panel to move flexibly within the sandwich structure. This design enables the photovoltaic panel to automatically adjust its angle according to the change of the sun's position, improving the flexibility and efficiency of photovoltaic power generation. The photovoltaic panels in adjacent arch structures are connected through the photovoltaic panel linkage mechanism, which enables the synchronous movement of the photovoltaic panels. This linkage mechanism not only simplifies the control logic of the photovoltaic panel, but also improves the stability and reliability of the entire system.

[0042] The main structure of the greenhouse adopts multiple side-by-side arches, which makes the greenhouse structure stable and able to withstand large wind and snow loads. The double-layer membrane structure and the mobile components of the photovoltaic panels are designed to be easy to disassemble and replace, reducing the maintenance cost and time of the greenhouse.

[0043] In some embodiments, the pendulum-type moving assembly includes a reduction motor, a swing rod 8, a photovoltaic panel bracket and an arc guide rail; the arc guide rail is installed in the sandwich structure, the photovoltaic panel 4 is installed on the photovoltaic panel bracket, and the photovoltaic panel bracket is slidingly connected to the arc guide rail so that the photovoltaic panel bracket can drive the photovoltaic panel 4 to move along the arc guide rail; one end of the swing rod 8 is fixedly connected to the photovoltaic panel bracket, and the other end of the swing rod 8 is connected to the output shaft of the reduction motor, and the reduction motor is used to drive the swing rod 8 to rotate around its output shaft.

[0044] Specifically, the arc guide rail is a semicircular steel rail with a radius of 6-10m, with a ceramic wear-resistant layer on the surface, and also has a gear rack transmission system, so that the flexible photovoltaic panel can be designed and constructed completely according to the arc requirements. Figure 2 , Figure 3 and Figure 4 , stroke control can be performed: 3 o'clock → 12 o'clock → 9 o'clock reciprocating motion, with 6 o'clock as the base point, daily stroke 90°, limit switch accuracy ±2°.

[0045] The pendulum - type moving component is electrically connected to the intelligent control system, enabling the pendulum - type moving component to have the following functions. Light - sensing tracking: A two - axis solar tracking sensor (accuracy ±5°) maximizes photovoltaic power generation. Speed matching: The rotation speed of the photovoltaic panel is synchronized with the solar azimuth angle (error < 15 minutes / day). Safety protection: An automatic reset mechanism in extreme weather (activated when wind speed > 8 m / s). Automatic shading, covering part of the strong light source of sunlight for power generation, so that the light conversion rate for power generation and plant growth is fully utilized.

[0046] In the above - mentioned embodiment, the swing rod is driven by a reduction motor to rotate, which can accurately control the movement of the photovoltaic panel support and the photovoltaic panel thereon along the arc - shaped guide rail. This mechanical transmission method has the characteristics of accurate positioning and rapid response, and can ensure that the photovoltaic panel always follows the best illumination angle of sunlight, thereby maximizing the photovoltaic power generation efficiency. The arc - shaped guide rail is installed in the sandwich structure, providing a stable movement path for the photovoltaic panel support. The sliding connection design between the photovoltaic panel support and the arc - shaped guide rail not only ensures the smoothness of the photovoltaic panel during movement but also enhances the strength and stability of the entire structure. By precisely controlling the movement of the photovoltaic panel, solar energy resources can be maximally utilized, reducing dependence on traditional energy sources, and thus achieving the goal of energy conservation and emission reduction.

[0047] In some embodiments, the photovoltaic panel linkage mechanism includes a first connecting rod 6 and a second connecting rod 7. The two ends of the first connecting rod 6 are respectively hinged to adjacent swing rods 8, and the two ends of the second connecting rod 7 are respectively hinged to adjacent swing rods 8. The first connecting rod 6 and the second connecting rod 7 are cross - arranged. Through the cross - hinged design of the first connecting rod 6 and the second connecting rod 7, a stable linkage relationship is formed between adjacent swing rods 8. When one of the swing rods 8 is driven to rotate by a reduction motor, through the transmission of the first connecting rod 6 and the second connecting rod 7, it can drive the adjacent swing rod 8 to rotate synchronously, thereby realizing the synchronous movement of the photovoltaic panel. The cross - arranged first connecting rod 6 and second connecting rod 7 form a stable quadrilateral structure, which has high stability in mechanics and can resist the influence of external factors (such as wind pressure, snow load, etc.) on the pendulum - type moving component, ensuring the smoothness and safety of the photovoltaic panel during movement. Since the photovoltaic panel linkage mechanism realizes the synchronous movement of the photovoltaic panel, the design of the control system can be greatly simplified. Compared with individually controlling the movement of each photovoltaic panel, using a linkage mechanism can significantly reduce the number and complexity of controllers, lower system costs and maintenance difficulties.

[0048] In some embodiments, the heat - insulating light - converting EVA film 2 has an ethylene - vinyl acetate copolymer substrate and a heat - insulating layer structure. A heat - insulating agent is provided in the heat - insulating layer structure. The heat - insulating light - converting EVA film 2 is used to convert ultraviolet light in natural light into infrared light beneficial to plant growth.

[0049] In the above embodiments, the heat-insulating and light-converting EVA film 2 has a heat-insulating layer structure. By incorporating a heat-insulating agent, the heat-insulating capacity of the greenhouse is effectively enhanced. This design can reduce the heat loss inside the greenhouse at night or in cold weather, providing a relatively stable growth environment for plants. The heat-insulating and light-converting EVA film 2 also has the function of converting ultraviolet light in natural light into infrared light beneficial to plant growth. Although ultraviolet light has a certain bactericidal effect on plants, excessive irradiation can damage plants. Infrared light, on the other hand, can promote the photosynthesis of plants, which is beneficial to the growth and development of plants. Therefore, this design not only reduces the potential harm of ultraviolet light to plants but also improves the utilization efficiency of light.

[0050] In some embodiments, the shadowless film 3 has an anti-reflection outer layer, a microbubble intermediate layer, and an anti-reflection inner layer, which are used to reduce the shadows inside the main structure 1 of the greenhouse. The anti-reflection outer layer can effectively reduce the reflection of light on the film surface, allowing more light to penetrate into the greenhouse interior. This helps to reduce the shadow areas caused by the reflection of the greenhouse structure itself or the film surface and improves the uniformity of illumination. The design of the microbubble intermediate layer further enhances the scattering effect of light inside the film, enabling the light to be more evenly distributed inside the greenhouse and reducing the occurrence of local shadows. The anti-reflection inner layer improves the transmittance of light at the film-air interface by optimizing the optical properties of the film material. This means that more light can penetrate the shadowless film 3 into the greenhouse interior, providing sufficient light for plant growth. Reducing shadows and improving the uniformity of illumination helps to optimize the plant growth environment. Uniform lighting conditions can promote the photosynthesis of plant leaves, increasing the growth rate and yield of plants. At the same time, good lighting conditions also help to improve the quality and disease resistance of plants.

[0051] In some embodiments, the photovoltaic panel 4 is of an arc structure, and the area of the photovoltaic panel 4 does not exceed 1 / 2 of the top surface area of the greenhouse main structure 1. The flexible photovoltaic panel can be bent and is lightweight. 2 - 5 rows of flexible photovoltaic panels are arranged on the fan - shaped arc surface. The flexible photovoltaic panel and the pendulum - type moving component form an arc - shaped travel range from 3 o'clock to 12 o'clock and then to 9 o'clock. Calculated with the center of the greenhouse as the 6 o'clock position, when the sun rises in the morning, the flexible photovoltaic panel is at the 3 o'clock position, at the 12 o'clock position at noon, and at the 9 o'clock position when the sun sets in the afternoon. In this way, the photovoltaic panel and the pendulum - type moving component move with the change of the sun's position, so that the photovoltaic panel can receive light as much as possible. The photovoltaic panel in this embodiment is a flexible photovoltaic panel, which can be bent at a certain angle. The photovoltaic panel has the function of shading. Cooperating with the pendulum - type moving component, it is equivalent to a movable sunshade net. Direct sunlight is likely to cause burns to plants, especially at noon. The photovoltaic panel in this embodiment can block direct sunlight, and can automatically track the sun, blocking excessive sunlight energy to the outside. The sunlight reflected by the photovoltaic panel is converted into the light needed for plant growth through refraction and the diffuse reflection of the shadowless film. The shadowless film can refract and diffusely reflect the light reflected by the photovoltaic panel, preventing the formation of shadow areas under the photovoltaic panel in the greenhouse from affecting crop growth. The shadowless film can illuminate every planting space below the inner layer film. By cooperating with the light blocking and reflection of the photovoltaic panel, it realizes the conversion of direct sunlight into diffuse reflection of light, avoiding the burns of plants caused by direct sunlight and promoting plant growth. In addition, traditional photovoltaic panels need to be frequently cleaned due to wind, rain, etc. The photovoltaic panel in this embodiment has two major advantages. First, it does not need to clean the photovoltaic panel, and only needs to blow the surface dust off with a hair dryer (because the photovoltaic panel is in a closed space). Second, because it automatically tracks the sun, the power generation efficiency increases by 15 - 25%, which is an effect that cannot be achieved by the prior art.

[0052] In some embodiments, the movable angle of the photovoltaic panel 4 is between 45° and 135°.

[0053] In some embodiments, the pendulum - type moving component drives the photovoltaic panel 4 to move as the sun moves, so that the photovoltaic panel 4 receives direct sunlight. By automatically adjusting the angle of the photovoltaic panel 4 to always maintain the best illumination angle with the sunlight, the solar energy can be maximally absorbed and converted into electrical energy. This not only improves the power generation efficiency of the photovoltaic power generation, but also increases the energy self - supply ability of the greenhouse. The movable angle range of the photovoltaic panel 4 covers most of the time periods from morning to evening, enabling the photovoltaic panel to maintain a high power generation efficiency at different solar altitude angles. This design enhances the adaptability of the greenhouse in different seasons and weather conditions. The automatic adjustment of the photovoltaic panel 4 also reduces its shadow occlusion of the internal space of the greenhouse. Especially during the period of oblique sunlight, by adjusting the angle of the photovoltaic panel, it can be ensured that the plants inside the greenhouse receive more uniform and sufficient light, which is beneficial to the growth and development of plants.

[0054] In some embodiments, a two-way fan 5 is provided on the main structure 1 of the greenhouse. One end of the two-way fan 5 communicates with the planting area inside the shadowless film 3, and the other end of the two-way fan 5 communicates with the external space of the main structure 1 of the greenhouse. The two-way fan 5 is a variable-frequency centrifugal fan (air volume 2000 - 5000m 3 / h, noise < 50 dB). One end of the two-way fan 5 communicates with the planting area inside the shadowless film 3, and the other end communicates with the external space of the main structure 1 of the greenhouse. This design can achieve rapid exchange of air inside and outside the greenhouse, effectively enhance the ventilation effect, and provide a more comfortable and healthy growth environment for plants. By starting the two-way fan 5, the temperature and humidity inside the greenhouse can be adjusted as needed. In hot weather, cool external air can be introduced to lower the temperature inside the greenhouse; in humid weather, the moisture inside the greenhouse can be discharged to maintain appropriate humidity conditions. The operation of the two-way fan 5 can be combined with the power generation of the photovoltaic panel 4 to achieve complementary utilization of energy. During periods of sufficient sunlight, the photovoltaic panel 4 can generate electricity to provide power for the two-way fan 5, thereby reducing the dependence on external power sources.

[0055] In some embodiments, a water storage tank 9, a heating water tank 10 and black energy storage water pipes 11 are provided outside the main structure 1 of the greenhouse; the black energy storage water pipes 11 are black PVC water pipes (diameter 50 mm, wall thickness 3 mm). The energy storage capacity is 3.5 MJ / m of heat storage per single water pipe, and the total system heat storage ≥ 200 MJ. The water storage tank 9 is used to collect the precipitation on the heat-insulating light-converting EVA film 2. The water storage tank 9 can be connected to a centrifugal atomizing nozzle (atomization particle size 50 - 100 μm, coverage radius 8 m) to quickly cool the inside of the greenhouse using water mist. The water storage tank 9 is used to collect the precipitation on the heat-insulating light-converting EVA film 2. This design can not only effectively collect and utilize rainwater resources, reduce waste of irrigation water, but also provide a low-temperature water source for the heating water tank 10 through the natural cooling effect of rainwater, achieving energy conservation. The heating water tank 10 can use solar energy or other heat sources to heat the clear water to provide hot water for the greenhouse. The hot water can be used for various purposes such as irrigation and adjusting the temperature inside the greenhouse. At the same time, the black energy storage water pipes 11 can absorb and store solar heat, further increasing the temperature of the hot water, achieving full utilization of energy. Through the combined use of the water storage tank 9, the heating water tank 10 and the black energy storage water pipes 11, the greenhouse can achieve recycling of water resources and self-sufficiency of energy, reduce dependence on external resources, and improve overall economy and sustainability.

[0056] In a specific embodiment, the distance of one span of the linked greenhouse is 12 meters - 20 meters, and a linked greenhouse has 3 - 9 spans, and the height can be about 7 m.

[0057] 1. Foundation construction: Use strip foundation (depth 1.2m, C25 concrete).

[0058] 2. Membrane installation: The inner and outer layers of the membrane adopt gluing technology, and the joint strength ≥ 80% of the base material.

[0059] 3. Photovoltaic layout: 3 rows and 50 columns, 150 flexible photovoltaic panels (single panel power 580W, total power 87000W).

[0060] 4. Pipeline laying: Arranged under the inner and outer layers of the membrane.

[0061] 5. Control system: Install temperature and humidity sensors (accuracy ±0.5°C / ±3%RH), and link to control the start and stop of the photovoltaic system.

[0062] The above embodiments have the following technical effects:

[0063] 1. Improvement in light energy utilization rate: The comprehensive photosynthetically active radiation (PAR) increases by 22%, and the photovoltaic power generation efficiency increases by 18%.

[0064] 2. Temperature regulation range: The lowest temperature at night in winter ≥ 12°C, and the temperature inside the shed at noon in summer ≤ 35°C.

[0065] 3. Optimization of crop growth: The growth cycle of leafy vegetables is shortened by 20%, and the fruit setting rate of tomatoes is increased by 15%.

[0066] 4. Environmental protection benefits: Annual CO 2 equivalent emission reduction ≥ 12 tons / acre, and the pesticide usage is reduced by 40%.

[0067] It should be clear that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, the detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present invention.

[0068] In the present invention, the features described and / or illustrated for one embodiment can be used in the same or similar manner in one or more other embodiments, and / or combined with the features of other embodiments or replace the features of other embodiments.

[0069] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the embodiments of the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pendulum-type flexible photovoltaic double-layer film linkage greenhouse, characterized in that: It includes a greenhouse main structure (1), a heat-insulating and light-converting EVA film (2), a shadowless film (3), a photovoltaic panel (4), a pendulum-shaped moving component and a photovoltaic panel linkage mechanism; Wherein, the cross section of the greenhouse main structure (1) is a plurality of side-by-side arched structures; The heat-insulating and light-converting EVA film (2) and the shadowless film (3) are both arranged on the greenhouse main structure (1); the heat-insulating and light-converting EVA film (2) is located on the outer side of the shadowless film (3); and a sandwich structure is formed between the shadowless film (3) and the heat-insulating and light-converting EVA film (2); The photovoltaic panel (4) is arranged in the sandwich structure, and the pendulum-type moving component is connected to the photovoltaic panel (4) to drive the photovoltaic panel (4) to move along an arc track in the sandwich structure. The photovoltaic panels (4) in adjacent arch structures are connected via the photovoltaic panel linkage mechanism so that the photovoltaic panels (4) move synchronously.

2. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 1 is characterized in that: The pendulum-type moving assembly comprises a reduction motor, a swing rod (8), a photovoltaic panel support and an arc-shaped guide rail; The arc-shaped guide rail is installed in the sandwich structure, the photovoltaic panel (4) is installed on the photovoltaic panel bracket, and the photovoltaic panel bracket is slidably connected to the arc-shaped guide rail so that the photovoltaic panel bracket can drive the photovoltaic panel (4) to move along the arc-shaped guide rail; One end of the swing rod (8) is fixedly connected to the photovoltaic panel support, and the other end of the swing rod (8) is connected to the output shaft of the reduction motor, and the reduction motor is used to drive the swing rod (8) to rotate around its output shaft.

3. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 2 is characterized in that: The photovoltaic panel linkage mechanism comprises a first connecting rod (6) and a second connecting rod (7), the two ends of the first connecting rod (6) are respectively hinged to the adjacent swing rod (8), the two ends of the second connecting rod (7) are respectively hinged to the adjacent swing rod (8), and the first connecting rod (6) and the second connecting rod (7) are cross-arranged.

4. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 1 is characterized in that: The heat-insulating and light-converting EVA film (2) comprises an ethylene-vinyl acetate copolymer substrate and a heat-insulating layer structure, wherein a heat-insulating agent is arranged in the heat-insulating layer structure, and the heat-insulating and light-converting EVA film (2) is used for converting ultraviolet light in natural light into infrared light that is beneficial to plant growth.

5. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 1 is characterized in that: The shadowless film (3) comprises an anti-reflection outer layer, a microbubble middle layer and an anti-reflection inner layer, and is used to reduce shadows within the greenhouse main structure (1).

6. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 1 is characterized in that: The photovoltaic panel (4) is an arc-shaped structure, and the area of ​​the photovoltaic panel (4) does not exceed 1 / 2 of the top surface area of ​​the greenhouse main structure (1).

7. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 1 is characterized in that: The movable angle of the photovoltaic panel (4) is between 45° and 135°.

8. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 1 is characterized in that: The pendulum-type moving component drives the photovoltaic panel (4) to move as the sun moves, so that the photovoltaic panel (4) receives direct sunlight.

9. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 1, characterized in that: A two-way fan (5) is provided on the greenhouse main structure (1), one end of the two-way fan (5) is connected to the planting area inside the shadowless film (3), and the other end of the two-way fan (5) is connected to the external space of the greenhouse main structure (1).

10. The pendulum-type flexible photovoltaic double-layer membrane linkage greenhouse according to claim 1, characterized in that: A clear water pool (9), a heating water pool (10) and a black energy storage water pipe (11) are arranged outside the greenhouse main structure (1); the clear water pool (9) is used to collect precipitation on the heat-insulating and light-converting EVA film (2).

Images