Unequal-slope sawtooth roof structure and photovoltaic greenhouse thereof

Abstract

The embodiment of the invention relates to the technical field of agricultural facilities, and discloses an unequal-slope sawtooth roof structure and a photovoltaic greenhouse thereof. The unequal-slope sawtooth roof structure comprises a plurality of supporting components arranged at intervals. The plurality of photovoltaic modules are obliquely arranged relative to the ground; the arch-shaped roof trusses are arranged between every two adjacent supporting components in a crossing mode, each arch-shaped roof truss is provided with a protruding ventilation cap, and a ventilation opening is formed in the tail end of each ventilation cap; the plurality of drainage devices are arranged on the supporting component and have preset ground clearances; the transparent plastic film covers the circular-arch-shaped roof truss; in the height direction, the ventilation opening is located below the first tail end of the photovoltaic module and is shielded by the photovoltaic module. The ventilation cap structure is reasonably arranged, the heat dissipation and cooling requirements in the greenhouse can be effectively met, an optimized drainage path is provided on the basis of the unequal-slope sawtooth roof formed on the roof of the ventilation cap, and the dry and comfortable state in the greenhouse can be maintained.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural facilities, and in particular to an unequal slope sawtooth roof structure and a photovoltaic greenhouse thereof. Background Art

[0002] Photovoltaic greenhouse is a structural design that combines photovoltaic power generation with traditional agricultural greenhouses. It sets the roof of the agricultural greenhouse under multiple groups of photovoltaic modules by adding connection and installation structures.

[0003] Because it combines agriculture and new energy, it has the advantages of improving land use efficiency and achieving economic and environmental benefits, and has begun to be widely promoted and used.

[0004] However, the existing photovoltaic greenhouses still have many defects and deficiencies in use. For example, when used in tropical areas with high temperatures and abundant rainfall, photovoltaic greenhouses have a greater need for ventilation and cooling and maintaining dryness in the greenhouse in summer.

[0005] Existing photovoltaic greenhouses cannot meet these two requirements well. If the top is covered with a film to prevent rain, poor ventilation will lead to high temperatures in the greenhouse; if the top is open, it is no different from open-air cultivation and cannot provide a rainproof and protected cultivation environment.

[0006] Therefore, there is an urgent need to provide a suitable photovoltaic greenhouse structure to take into account the needs of drainage and ventilation and cooling. Summary of the invention

[0007] The unequal slope sawtooth roof structure and photovoltaic greenhouse provided in the present application can overcome at least some of the defects existing in the existing photovoltaic greenhouses.

[0008] In a first aspect, the present application provides an unequal slope sawtooth roof structure for a photovoltaic greenhouse. The invention comprises: a plurality of support members arranged at intervals; the bottom of the support member is fixed on the ground; a plurality of photovoltaic modules, one of the photovoltaic modules is fixed on the top of one of the support members and is arranged obliquely relative to the ground; wherein the obliquely arranged photovoltaic modules have a first end and a second end which are far away from each other; the height of the first end from the ground is greater than that of the second end; a plurality of round arch trusses; one of the round arch trusses is arranged between two adjacent support members in the first direction; wherein one of the round arch trusses is provided with a protruding ventilating cap to form a roof unit with unequal slope sawtooth shape; the ventilating cap is the highest point of the roof unit; a plurality of drainage devices; one of the drainage devices forms a gutter extending in the second direction; the drainage device is arranged on the support member and has a preset height from the ground; wherein the first direction and the second direction are two directions perpendicular to each other on the ground; a transparent plastic film; the transparent plastic film covers the round arch trusses; wherein the end of the round arch trusses extends to the corresponding gutter, and the end of the ventilating cap forms a vent; in the height direction, the vent is located below the first end of the photovoltaic module and is blocked by the photovoltaic module.

[0009] In some embodiments, the unequal slope sawtooth shape is formed by a combination of a first arc and a second arc: wherein the two arc ends of the first arc extend to two adjacent supporting members respectively; one of the arc ends of the second arc forms the highest point, and the other arc end of the second arc is located at the midpoint of the first arc.

[0010] In some embodiments, in a plane space parallel to the ground, the highest point at least partially coincides with the first end; in the height direction, the vent is perpendicular to the ground.

[0011] In some embodiments, the round arch roof truss includes: an arch rod forming the first arc; a horizontal beam arranged relative to the ground; a web connecting the arch rod and the cross beam; and a ventilating hood forming the second arc.

[0012] In some embodiments, the vents are covered with an insect screen.

[0013] In some embodiments, the supporting member includes: a foundation pile fixed on the ground; a photovoltaic bracket fixedly installed on the top of the foundation pile; and a connecting component connecting the photovoltaic bracket and the photovoltaic component.

[0014] In some embodiments, the photovoltaic support includes: a support body extending from the top end of the foundation pile; and an oblique support rod connected between the foundation pile and the support body.

[0015] In some embodiments, the drainage device is fixedly mounted on the foundation piles; wherein, the top of the drainage device is open to receive rainwater flowing out from the end of the arched roof truss.

[0016] In some embodiments, two ends of the drainage device that are away from each other in the second direction are provided with downpipes; wherein the downpipes are connected to the gutter so that rainwater in the gutter is guided to the ground.

[0017] In a second aspect, the present application provides a photovoltaic greenhouse. The photovoltaic greenhouse comprises: the unequal slope sawtooth roof structure as described above; and a drainage ditch arranged on the ground and surrounding the unequal slope sawtooth roof structure; wherein rainwater flowing in the gutter formed by the drainage device of the unequal slope sawtooth roof structure is guided to the drainage ditch for discharge.

[0018] At least one advantageous aspect of the photovoltaic greenhouse provided by the embodiment of the present application is that by reasonably setting the ventilation cap structure, a vent is formed on the roof, which can effectively meet the heat dissipation and cooling requirements inside the greenhouse. Moreover, the unequal slope sawtooth roof formed on the roof by the ventilation cap provides an optimized drainage path, which cooperates with the inclined photovoltaic components to effectively drain rainwater while maintaining a dry state in the greenhouse, thereby preventing the humidity in the greenhouse from rising. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0020] Figure 1 is a side view of a photovoltaic greenhouse provided in an embodiment of the present application;

[0021] Figure 2 is a schematic diagram of the connection relationship between the round arch roof truss and two adjacent supporting members provided in an embodiment of the present application;

[0022] Figure 3 It is a schematic diagram of a connector provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The present application is described in detail below in conjunction with specific embodiments. It should be emphasized that the following description is merely illustrative and is not intended to limit the scope of the present application and its application.

[0024] It should be noted that, unless otherwise clearly specified and limited, the terms "center", "longitudinal", "lateral", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. used in this specification indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application. Terms such as "installed", "connected", "connected", "fixed" and the like 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; it can be directly connected or indirectly connected through an intermediate medium. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated; therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more; "and / or" includes any and all combinations of one or more related listed items. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] Figure 1 A side view of a photovoltaic greenhouse provided in an embodiment of the present application. The photovoltaic greenhouse has a roof called an "unequal slope sawtooth roof structure", which can provide sufficient cooling and heat dissipation capabilities while ensuring the dryness of the interior of the greenhouse.

[0026] like Figure 1 As shown, the photovoltaic greenhouse includes: a plurality of support members 100 arranged at intervals, a plurality of photovoltaic modules 200, a plurality of round arched roof trusses 300, a plurality of drainage devices 400 and a transparent plastic film 500.

[0027] Among them, multiple support members 100 are fixed to the ground in an interval arrangement manner, serving as the basic frame part of the entire photovoltaic greenhouse, for transferring loads such as weight to the ground to maintain the stability and safety of the entire greenhouse.

[0028] Specifically, a plurality of support members 100 may be arranged along a plurality of parallel straight lines. The support members 100 on each straight line may be referred to as a row of support members, and a plurality of rows of support members are arranged at intervals to form a basic framework of a photovoltaic greenhouse with a certain floor area on the ground.

[0029] In the present application, for simplicity of description, a first direction X is used to indicate the arrangement direction of adjacent rows of support members, and a second direction (not shown in the figure) is used to indicate the arrangement direction of the support members in the same row.

[0030] In other words, the first direction and the second direction are two directions perpendicular to each other on the ground. Two adjacent rows of support members are arranged at intervals along the first direction, and the support members in the same row are arranged at intervals along the second direction.

[0031] The photovoltaic module 200 is a device fixedly mounted on the top of the supporting member 100 to realize the conversion of light energy and electric energy. In this embodiment, a photovoltaic module 200 can be mounted on the top of each supporting member 100, thereby forming a corresponding photovoltaic array on the top surface of the photovoltaic greenhouse.

[0032] Specifically, in order to improve the light energy conversion efficiency, the plate-shaped photovoltaic assembly 200 is tilted relative to the ground. The specific tilt angle can be set by the technician according to the actual needs, for example, the latitude of the region.

[0033] In this application, for the sake of simplicity, the two ends of the photovoltaic assembly that are arranged tilted and are far from each other are respectively referred to as the "first end" and the "second end". Among them, the end with a higher height above the ground is called the first end, and the other end that is relatively close to the ground is called the second end. The "height above the ground" refers to the vertical distance from the ground to a specific structural position.

[0034] The round arched roof truss 300 is arranged between two adjacent supporting members 100 in the first direction, forming a roof frame foundation between the two supporting members 100. In the present application, for simplicity of description, the roof structure formed by each row of round arched roof trusses 300 is referred to as a "roof unit".

[0035] For example, Figure 1 The figure shows a situation where four rows of support members 100 and three rows of round arched roof trusses 300 are provided. However, those skilled in the art can understand that, based on the inventive concept of the present application, more or fewer support members 100 and round arched frames 300 can be provided according to the actual needs to provide photovoltaic greenhouses of different sizes.

[0036] In the present application, in order to take into account the heat dissipation and ventilation requirements and the drainage requirements of the greenhouse roof, each arched roof truss 300 is provided with a protruding vent cap 310. The vent cap 310, as the highest point of the roof unit, can form an unequal slope sawtooth shape.

[0037] Specifically, Figure 3 As shown, the unequal slope sawtooth shape of each roof unit can be formed by combining a first arc S1 and a second arc S2.

[0038] The two arc ends of the first arc S1 extend to two adjacent supporting members respectively, which are the lowest points of the entire unequal slope sawtooth shape. It can be formed by the main structure of the round arch roof truss 300. The second arc S2 is formed by the above-mentioned vent cap 310, one of the arc ends forms the highest point of the entire unequal slope sawtooth shape, and the other arc end is located at the midpoint of the first arc, thereby forming a guide path for guiding the flow of rainwater on a roof unit.

[0039] Please continue reading Figure 3 In a plane space parallel to the ground, the highest point at least partially coincides with the first end; in the height direction z, the vent is perpendicular to the ground.

[0040] The drainage device 400 is a structure for forming a drainage gutter, which has a slope in the second direction, and the slope can be 2% to 3%. It can be fixed on the support member 100 in any suitable manner to form a gutter extending along the second direction. The end of the arched roof frame 300 extends to the corresponding gutter, so that rainwater sliding down the end can be collected by the gutter and guided to the end drain pipe for discharge.

[0041] For details, please continue to refer to Figure 1 The drainage device 400 disposed on the supporting member 100 has a suitable height from the ground. The gutter formed by it can be located outside the inner space R of the greenhouse formed by the arched roof frame 300 and the supporting member 100. As a result, the flowing rainwater will not enter the inner space of the greenhouse, and the air inside the greenhouse can be kept dry.

[0042] In some embodiments, Figure 2 As shown, the drainage device 400 can be designed to be open at the top. The end of the round arched roof frame extends to the position of the top opening of the drainage device 400, so that the gutter receives and collects rainwater directed out from the end of the round arched roof frame.

[0043] Preferably, in order to make the drainage device 400 with a certain height above the ground drain smoothly, corresponding downpipes can be respectively provided at the two ends of the gutter that are away from each other in the second direction. The downpipes connected to the gutter are used to guide the rainwater in the gutter to the ground for drainage. Accordingly, the photovoltaic greenhouse can also arrange an additional drainage ditch located on the ground at a position corresponding to the downpipe of the drainage device. Thus, the rainwater flowing in the gutter formed by the drainage device can be guided to the drainage ditch through the downpipes and discharged from the drainage ditch.

[0044] The drainage ditch can be set outside the interior space R of the greenhouse and surround the greenhouse. The rainwater flowing from the gutter can be guided to the drainage ditch around the greenhouse through the downpipe and will not enter the interior space R of the greenhouse, so as to keep the air inside the greenhouse dry. The transparent plastic film 500 is made of a light-transmitting and water-impermeable material and has a specific thickness. It can be covered on the arched roof frame to form a light-transmitting and water-impermeable greenhouse roof, providing a rainproof internal environment for the greenhouse.

[0045] The vents can also be covered with insect-proof nets to provide certain protection for the crops grown inside the greenhouse. Correspondingly, insect-proof nets can also be laid around the photovoltaic greenhouse to enclose a relatively independent crop protection area.

[0046] Please continue reading Figure 2 In the height direction z, by appropriately setting the position of the ventilation cap 310, the vent is located below the first end of the photovoltaic component 200 and is shielded by the photovoltaic component 200, thereby preventing rainwater from directly entering the interior of the greenhouse through the vent.

[0047] In actual use, based on the specific location of the above vents, such as Figure 1 As shown by the black arrow, rainwater falling on the photovoltaic module 200 will slide from the second end of the photovoltaic module to the adjacent roof unit under the action of gravity, and then, under the guidance of the inclined roof unit, flow into the gutter formed by the drainage device 400 through one of the ends of the roof unit located at the lowest point.

[0048] As described above, the top of the vent cap 310 is the highest point of the entire roof unit. Rainwater falling directly on the roof unit will also flow to the corresponding end under the action of gravity, and then enter the gutter formed by the drainage device without crossing the highest point.

[0049] In addition, due to the shielding effect of the first end of the photovoltaic component 200 and the adjacent parts, rainwater will not enter directly through the vents, but will fall on the photovoltaic component 200 and flow to another adjacent roof unit under the guidance of the inclined photovoltaic component.

[0050] Preferably, based on the larger coverage area provided by the photovoltaic component 200, the area covered by the transparent plastic film 500 covering each roof unit and blocked by the first end of the photovoltaic component 200 and its adjacent part (the supporting structure not exceeding the center point) can also be set as a movable part 510.

[0051] The "movable part" refers to the ability of the transparent plastic film to switch between two states: unfolding and rolling up. Specifically, those skilled in the art can choose to use any suitable type of film rolling device to drive the transparent plastic film according to actual needs, so as to make it movable to meet the needs of different weather conditions.

[0052] During actual use, in spring or winter when the temperature is low and the greenhouse needs to be kept warm, the film rolling device can be controlled to drive the movable transparent plastic film part 510 to be flattened and laid, so that the entire arched roof frame is completely covered, forming a relatively sealed greenhouse environment and providing better insulation effect.

[0053] In summer and autumn when the temperature is high and the greenhouse needs heat dissipation, the film rolling device can be controlled to drive the movable transparent plastic film part 510 to roll up and recycle and fix it at the vent, so that the greenhouse has sufficient heat dissipation air exchange windows. The heat dissipation air exchange windows are located at the top, which is consistent with the characteristics of hot air rising, thereby effectively improving the heat dissipation effect inside the greenhouse.

[0054] Specifically, the movable transparent plastic film part 510 is laid in the area shielded by the photovoltaic module. Thus, by utilizing the shielding effect of the photovoltaic module, rainwater will not directly drip onto the heat dissipation and air exchange window formed by the rolled and recovered transparent plastic film part 510, which can ensure that there is no leakage and the air in the greenhouse is dry.

[0055] In some embodiments, please refer to Figure 2 The round arch roof truss 300 includes a ventilating hood 310 , an arch rod 330 , a cross beam 340 and a web rod 350 .

[0056] The arch rod 330 forms the first arc S1, and the cross beam is arranged horizontally relative to the ground. The web bars 350 can be arranged in pairs, connecting the arch rod 330 and the cross beam 340. The ventilating cap 310 forms a second arc S2 and is fixedly arranged at a suitable position of the arch rod 330.

[0057] For details, please continue to refer to Figure 2 The supporting structure 100 includes: a foundation pile 110, a photovoltaic support 120 and a connecting assembly 130.

[0058] The foundation pile 110 is a basic structure fixed on the ground to bear and transfer loads to the ground, and can be made of concrete or steel structural members.

[0059] The photovoltaic support 120 is fixedly installed on the top of the foundation pile to form a mounting frame of the photovoltaic assembly 200, so that the photovoltaic assembly 200 can be installed and fixed at a designed angle and position. Any suitable type of mounting frame structure can be selected according to the actual needs. For example, Figure 2 The figure shows a photovoltaic bracket 120 which is composed of a bracket body 121 and an oblique support rod 122.

[0060] The support body 121 extends from the top of the foundation pile, providing a position for installing and fixing the photovoltaic assembly 200. The oblique support rod 122 is connected between the foundation pile 110 and the support body 121, so that the support body 121 has a designed inclination angle.

[0061] Therefore, the bracket body 121 can be easily tilted at a proper angle by controlling and adjusting the oblique support rods 122, thereby making the photovoltaic assembly 200 fixed on the surface thereof have a suitable tilt angle.

[0062] The connection assembly 130 is a connection member used to realize a fixed connection between the photovoltaic assembly and the photovoltaic support, and any suitable type of connection member can be selected and used according to the actual needs, and is not specifically limited here.

[0063] In some embodiments, Figure 3 As shown, the drainage device 400 and the arch rod 330 can form a stable connection node through matching connecting parts and be fixed at a proper position of the foundation pile 110 to form a complete roof structure.

[0064] The connecting member 600 includes: a clamp 610 and an inclined support structure 620. The inclined support structure 620 forms a first installation position F1 inclined relative to the height direction on its side, and one end of the arch rod 330 can be locked and fixed in the first installation position F1 by a similar structure such as an arch rod pressing sheet 630. The inclined support structure 620 also has a second installation position F2 that is roughly horizontal to the ground. The drainage device 400 can be locked and fixed at the second installation position F2.

[0065] The inclined support structures 620 can be arranged in pairs to provide supporting and fixed installation positions for the arch rods 330 and the drainage device 400 on both sides. The hoop 610 is rigidly connected to a pair of inclined support structures 620 and is located at the bottom of the support structure 620. Thus, the inclined support structure 620 is locked and fixed on the foundation pile 100 through the hoop 610.

[0066] It should be noted that, in the embodiment of the present application, the above-mentioned connecting member is divided into a clamp 610 and a support structure 620 based on the basic functional structure. However, it can be understood by those skilled in the art that, according to the actual needs, a combination of more or fewer structural components can be selected to realize the above-mentioned clamp 610 and support structure 620. For example, Figure 3 As shown, the support structure 620 can be implemented by multiple components, which are locked and fixed by bolts 640.

[0067] Furthermore, the transparent plastic film 500 laid and covered on the dome-shaped roof can also be locked and fixed on the inclined supporting structure 620 by means of bolts 640, so that its ends are stably and reliably fixed.

[0068] In summary, the photovoltaic greenhouse provided in the embodiment of the present application can be well used in the summer when rainy and hot seasons coexist. It can not only meet the ventilation and cooling needs of planting in the greenhouse, but also optimize the drainage path to prevent rainwater from flowing through the planting space inside the greenhouse, so that the greenhouse can maintain a relatively dry state.

[0069] The above contents are further detailed descriptions of the present application in combination with specific / preferred implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application.

Claims

1. A unequal slope sawtooth roof structure for a photovoltaic greenhouse, characterized in that: include: A plurality of support members arranged at intervals; the bottom of each support member is fixed to the ground; A plurality of photovoltaic modules, one of the photovoltaic modules is fixedly disposed on a top end of one of the supporting members and is tilted relative to the ground; Wherein, the inclined photovoltaic assembly has a first end and a second end that are far away from each other; the height of the first end from the ground is greater than that of the second end; A plurality of round arched roof trusses; one of the round arched roof trusses is arranged between two adjacent supporting members in the first direction; Wherein, one of the round arched roof trusses is provided with a protruding ventilating cap to form a roof unit with an unequal slope sawtooth shape; the ventilating cap is the highest point of the roof unit; A plurality of drainage devices; one of the drainage devices forms a gutter extending along the second direction; the drainage device is arranged on the support member and has a preset height from the ground; Wherein, the first direction and the second direction are two directions perpendicular to each other on the ground; A transparent plastic film; the transparent plastic film covers the arched roof truss; The end of the round arch roof truss extends to the corresponding gutter, and the end of the vent cap forms a vent; in the height direction, the vent is located below the first end of the photovoltaic component and is blocked by the photovoltaic component.

2. The unequal slope sawtooth roof structure according to claim 1, characterized in that: The unequal slope sawtooth shape is formed by combining a first arc and a second arc: Wherein, the two arc ends of the first arc extend to two adjacent supporting members respectively; one arc end of the second arc forms the highest point, and the other arc end of the second arc is located at the midpoint of the first arc.

3. The unequal slope sawtooth roof structure according to claim 2 is characterized in that: In a plane space parallel to the ground, the highest point at least partially coincides with the first end; in the height direction, the vent is perpendicular to the ground.

4. The unequal slope sawtooth roof structure according to claim 2, characterized in that: The round arch roof truss comprises: An arch rod forming the first arc; a beam disposed horizontally relative to the ground; a web member connecting the arch rod and the cross beam; and The cowl of the second arc is formed.

5. The unequal slope sawtooth roof structure according to claim 1, characterized in that: The vent is covered with an insect-proof net.

6. The unequal slope sawtooth roof structure according to claim 1, characterized in that: The supporting member comprises: foundation piles fixed in the ground; A photovoltaic support fixedly mounted on the top of the foundation pile; and A connecting component connecting the photovoltaic support and the photovoltaic component.

7. The unequal slope sawtooth roof structure according to claim 6, characterized in that: The photovoltaic support comprises: A support body extending from a top end of the foundation pile; and An oblique support rod is connected between the foundation pile and the support body.

8. The unequal slope sawtooth roof structure according to claim 6, characterized in that: The drainage device is fixedly arranged on the foundation piles; wherein, the top of the drainage device is open to receive the rainwater flowing out from the end of the round arch roof truss.

9. The unequal slope sawtooth roof structure according to claim 1, characterized in that: Downpipes are provided at two ends of the drainage device that are away from each other in the second direction; Wherein, the downpipe is connected to the gutter so that rainwater in the gutter is guided to the ground.

10. A photovoltaic greenhouse, characterized in that: include: The unequal slope sawtooth roof structure according to any one of claims 1 to 9; and A drainage ditch arranged on the ground and surrounding the unequal slope sawtooth roof structure; Wherein, rainwater flowing in the gutter formed by the drainage device of the unequal slope sawtooth roof structure is guided to the drainage ditch for discharge.

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