A photovoltaic-photothermal collaborative water circulation and heat storage system for highland greenhouses

Abstract

The utility model relates to a greenhouse technical field especially relates to a kind of photovoltaic light-heat collaborative water circulation heat storage systems for plateau greenhouse, it include: pedestal, the pedestal top middle part is equipped with sunken groove, the sunken groove middle part is provided with heat storage pond, the sunken groove top rear side is fixedly connected with heat preservation wallboard, the heat preservation wallboard top is fixedly connected with heat preservation inclined roof, the heat preservation inclined roof is provided with light-transmitting framework between sunken groove front end, the top of the heat preservation inclined roof is fixedly installed with photovoltaic board, the back of the photovoltaic board is provided with heat recovery component, the front end of the heat preservation wallboard is evenly fixedly installed with a plurality of water storage bags, the heat recovered by heat recovery component is stored in the water in a plurality of water storage bags, when temperature is lower than the set threshold at night, hot water in water storage bag is injected into heat storage pond, the utility model provides a kind of photovoltaic light-heat collaborative water circulation heat storage systems for extending the growth cycle of agricultural operation.

Description

Technical Field

[0001] This utility model relates to the field of greenhouse technology, and in particular to a photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses. Background Technology

[0002] In high-altitude regions, agricultural production faces numerous challenges due to their unique geographical and climatic conditions. Large diurnal temperature variations and extremely low winter temperatures severely limit crop growth cycles, hindering yield and economic benefits. Existing high-altitude greenhouses are inadequate in terms of insulation and energy efficiency, failing to meet the needs of local agricultural development. Utility Model Content

[0003] The purpose of this invention is to provide a photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses, so as to solve the technical problems existing in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses includes: a base, a sunken trough at the top center of the base, a hot water storage tank in the middle of the sunken trough, an insulated wall panel fixedly connected to the rear side of the top of the sunken trough, an insulated sloping roof fixedly connected to the top of the insulated wall panel, a light-transmitting frame between the insulated sloping roof and the front end of the sunken trough, a photovoltaic panel fixedly installed on the top of the insulated sloping roof, a heat recovery component on the back of the photovoltaic panel, and several water storage bags evenly fixedly installed on the front end of the insulated wall panel. The heat recovered by the heat recovery component is stored in the water in the several water storage bags. When the temperature is lower than a set threshold at night, the hot water in the water storage bags is injected into the hot water storage tank.

[0006] Furthermore, both the insulated wall panels and the insulated sloping roof are filled with expanded polystyrene material.

[0007] Furthermore, the light-transmitting frame includes: inclined supports and horizontal supports, and several inclined supports and horizontal supports are provided. Several inclined supports are arranged horizontally at equal intervals between the heat-insulating inclined roof and the front end of the sinking trough, and several horizontal supports are evenly arranged between two adjacent inclined supports.

[0008] Furthermore, it also includes: a thermal insulation blanket, one end of which is fixedly connected to the lower front end of the thermal insulation sloping roof, and the other end is a movable end. During the day, the thermal insulation blanket is rolled up to the top of the light-transmitting frame, and at night, the thermal insulation blanket is lowered and completely covers the outer end face of the light-transmitting frame.

[0009] Furthermore, two side walls are respectively provided on the left and right ends of the base, and the two side walls completely cover the left and right ends of the canopy formed by the base, the insulated wall panel, the insulated sloping roof and the light-transmitting frame.

[0010] Furthermore, it also includes: a photovoltaic panel bracket, wherein the photovoltaic panel is fixedly installed on the top of the insulated sloping roof via the photovoltaic panel bracket, and the photovoltaic panel is inclined downward from back to front.

[0011] Furthermore, the heat recovery assembly includes: a heat-conducting pipe, a branch pipe 1, a collecting pipe 1, a connecting pipe 1, a branch pipe 2, a collecting pipe 2, a branch pipe 3, a collecting pipe 3, a branch pipe 4, a collecting pipe 4, a tee, a connecting pipe 3, a circulation pump, and a one-way valve 2. Several heat-conducting pipes are provided, and these pipes are evenly and fixedly installed on the back of the photovoltaic panel. A branch pipe 1 and a branch pipe 2 are respectively provided at the rear and front ends of each heat-conducting pipe. Several branch pipes 1 are all connected to collecting pipe 1, and several branch pipes 2 are all connected to collecting pipe 2. The middle of the first collecting pipe is connected to one end of the first connecting pipe. The upper and lower ends of the water storage bag are respectively provided with the third and fourth branch pipes. Several third branch pipes are connected to the third collecting pipe, and several fourth branch pipes are connected to the fourth collecting pipe. The other end of the first connecting pipe is connected to the middle of the third collecting pipe. The left end of the fourth collecting pipe is connected to the right end of the tee. The left end of the tee is connected to the third connecting pipe. The third connecting pipe is connected to the left end of the second collecting pipe. A circulation pump and a check valve are respectively provided on the third connecting pipe.

[0012] Furthermore, the heat pipe is wrapped with an insulation sleeve, which is made of expanded polystyrene.

[0013] Furthermore, it also includes: a drain pipe and a solenoid valve, one end of the drain pipe is connected to the lower end of the tee, the other end of the drain pipe extends to the lower left side of the hot water storage tank, and a solenoid valve is installed on the drain pipe.

[0014] Furthermore, it also includes: a second connecting pipe, a water pump, and a first check valve. One end of the second connecting pipe is connected to the right end of the second collecting pipe, and the other end of the second connecting pipe is connected to the output port of the water pump. The water pump is placed at the bottom right side of the hot water storage tank, and a first check valve is installed on the second connecting pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a heat recovery component installed on the back of a photovoltaic panel to collect and store a portion of the heat generated during the day through heat conduction in a water storage bag. When the temperature drops below a set threshold at night, the hot water in the storage bag is injected into a hot water storage tank, preventing excessive temperature differences within the greenhouse and thus extending the crop growth cycle to a certain extent, ensuring crop yield. The entire system not only utilizes the photovoltaic panel for power generation but also leverages the heat generated by the panel, making it energy-saving and environmentally friendly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a rear-view perspective view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the heat pipe of this utility model;

[0020] Figure 4 This is a transverse longitudinal sectional view of the water storage bag of this utility model;

[0021] Figure 5 This is a longitudinal sectional view of the present invention.

[0022] The labels in the attached diagram are as follows: 1-Base, 101-Sinking Tank, 102-Hot Water Storage Tank, 2-Insulated Wall Panel, 3-Insulated Sloping Roof, 4-Transparent Frame, 5-Insulation Blanket, 6-Photovoltaic Panel Support, 7-Photovoltaic Panel, 8-Heat Conducting Pipe, 9-Insulation Sleeve, 10-Branch Pipe 1, 11-Collection Pipe 1, 12-Connecting Pipe 1, 13-Branch Pipe 2, 14-Collection Pipe 2, 15-Connecting Pipe 2, 16-Water Pump, 17-One-Way Valve 1, 18-Water Storage Bag, 19-Branch Pipe 3, 20-Collection Pipe 3, 21-Branch Pipe 4, 22-Collection Pipe 4, 23-Tee, 24-Connecting Pipe 3, 25-Drainage Pipe, 26-Circulation Pump, 27-One-Way Valve 2, 28-Solenoid Valve. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] See Figures 1-5 As shown, a photovoltaic-thermal synergistic water circulation heat storage system for a plateau greenhouse includes: a base 1, a sunken trough 101 with a central opening at the top of the base 1, a hot water storage tank 102 located in the center of the sunken trough 101, an insulation wall panel 2 fixedly connected to the rear side of the top of the sunken trough 101, an insulation sloping roof 3 fixedly connected to the top of the insulation wall panel 2, a light-transmitting frame 4 between the insulation sloping roof 3 and the front end of the sunken trough 101, a photovoltaic panel 7 fixedly installed on the top of the insulation sloping roof 3, a heat recovery component located on the back of the photovoltaic panel 7, and several water storage bags 18 evenly fixedly installed at the front end of the insulation wall panel 2. The heat recovered by the heat recovery component is stored in the water in the several water storage bags 18. When the temperature is lower than a set threshold at night, the hot water in the water storage bags 18 is injected into the hot water storage tank 102.

[0025] In this embodiment, both the insulation wall panel 2 and the insulation sloping roof 3 are filled with expanded polystyrene material to ensure the insulation effect of the insulation wall panel 2 and the insulation sloping roof 3.

[0026] In this embodiment, the light-transmitting frame 4 includes: inclined support frames and horizontal frames. Several inclined support frames and horizontal frames are provided. Several inclined support frames are arranged horizontally at equal intervals between the heat-insulating inclined roof 3 and the front end of the sinkhole 101. Several horizontal frames are evenly arranged between two adjacent inclined support frames. The horizontal frames can ensure the stability of several inclined support frames.

[0027] In this embodiment, it also includes: a thermal insulation blanket 5, one end of which is fixedly connected to the lower front end of the thermal insulation sloping roof 3, and the other end is a movable end. During the day, the thermal insulation blanket 5 is rolled up to the top of the light-transmitting frame 4. At night, the thermal insulation blanket 5 is lowered and completely covers the outer end face of the light-transmitting frame 4. The thermal insulation blanket 5 is made of cotton, and the side of the thermal insulation blanket 5 that is in contact with the light-transmitting frame 4 is also provided with a heat insulation film.

[0028] In this embodiment, two side walls (not shown in the figure) are respectively provided on the left and right ends of the base 1. The two side walls completely cover the left and right ends of the canopy formed by the base 1, the insulation wall panel 2, the insulation sloping roof 3 and the light-transmitting frame 4. The interior of the two side walls is also filled with expanded polystyrene material.

[0029] In this embodiment, it also includes: a photovoltaic panel bracket 6, and a photovoltaic panel 7 is fixedly installed on the top of the insulated sloping roof 3 through the photovoltaic panel bracket 6. The photovoltaic panel 7 is set from back to front and downward.

[0030] In this embodiment, the heat recovery assembly includes: heat-conducting pipes 8, branch pipe 10, collecting pipe 11, connecting pipe 12, branch pipe 2 13, collecting pipe 2 14, branch pipe 3 19, collecting pipe 3 20, branch pipe 4 21, collecting pipe 4 22, tee 23, connecting pipe 3 24, circulation pump 26, and one-way valve 27. Several heat-conducting pipes 8 are provided, and these heat-conducting pipes 8 are evenly and fixedly installed on the back of the photovoltaic panel 7. Branch pipe 10 and branch pipe 2 13 are respectively provided at the rear and front ends of the heat-conducting pipes 8, and the several branch pipes 10 are all connected. A manifold 11 and several branch pipes 2 13 are connected to a manifold 2 14. One end of a connecting pipe 12 is connected to the middle of manifold 11. Branch pipes 3 19 and 4 21 are respectively installed at the upper and lower ends of the water storage bag 18. Several branch pipes 3 19 are connected to a manifold 3 20, and several branch pipes 4 21 are connected to a manifold 4 22. The other end of connecting pipe 12 is connected to the middle of manifold 3 20. The left end of manifold 4 22 is connected to the right end of a tee 23, and the left end of tee 23 is connected to a connecting pipe 3 24. 24 is connected to the left end of the manifold 214. A circulation pump 26 and a one-way valve 27 are respectively installed on the connecting pipe 3 24. The heat generated by the photovoltaic panel 7 during daytime operation is conducted to the water in the heat pipes 8. The circulation pump 26 circulates the water, and the water circulation process is as follows: water flows from the manifold 214 through several branch pipes 213 into several heat pipes 8. After being heated, the water in the heat pipes 8 flows through several branch pipes 10 into the manifold 11, and then through the connecting pipe 12, the manifold 3 20, and several branch pipes 319. The water enters several water storage bags 18. Since the photovoltaic panel 7 works continuously during the day, it continuously generates heat. The water entering the water storage bags 18 will lose heat. Therefore, during the day, driven by the circulation pump 26, the water in the several water storage bags 18 enters the collection pipe 22 through several branch pipes 4 21, and flows back to the collection pipe 2 14 through the connecting pipe 3 24 via the tee 23, thereby ensuring that the water in the water storage bags 18 has sufficient heat. The one-way valve 2 27 can prevent the cooled hot water from flowing back in the connecting pipe 3 24.

[0031] In this embodiment, the heat pipe 8 is wrapped with an insulation sleeve 9, which is made of expanded polystyrene to prevent the heat pipe 8 from losing heat too quickly.

[0032] In this embodiment, the system also includes a drain pipe 25 and a solenoid valve 28. One end of the drain pipe 25 is connected to the lower end of the tee 23, and the other end of the drain pipe 25 extends to the lower left side of the hot water storage tank 102. The drain pipe 25 is equipped with a solenoid valve 28. When the temperature inside the greenhouse is lower than the set threshold at night, the solenoid valve 28 is opened, and the water in several water storage bags 18 will be injected into the hot water storage tank 102 under the action of gravity, thereby avoiding excessive temperature difference inside the greenhouse.

[0033] In this embodiment, it also includes: a second connecting pipe 15, a water pump 16, and a first check valve 17. One end of the second connecting pipe 15 is connected to the right end of the second collecting pipe 14, and the other end of the second connecting pipe 15 is connected to the output port of the water pump 16. The water pump 16 is placed at the bottom right side of the hot water storage tank 102. The first check valve 17 is provided on the second connecting pipe 15. The water pump 16 and the second connecting pipe 15 can replenish the water in the circulating water circuit in a timely manner after all the hot water in the several water storage bags 18 is injected into the hot water storage tank. The first check valve 17 can prevent water backflow.

[0034] The system is also equipped with a PLC controller and a temperature sensor. The temperature sensor detects the temperature inside the greenhouse in real time and feeds it back to the PLC controller, which controls the operation of the electrical components of the entire system.

[0035] Working principle: During the day, the insulation blanket 5 is rolled up to the top of the light-transmitting frame 4. At this time, sunlight shines through the light-transmitting frame 4 onto the crops inside the greenhouse. At the same time, the sunlight also shines on the water in the hot water storage tank, where the water stores some heat. The photovoltaic panel 7 generates electricity. By installing a heat recovery component on the back of the photovoltaic panel 7, the heat generated by the photovoltaic panel 7 during the day is conducted to the water in the heat-conducting pipe 8. The circulation pump 26 realizes water circulation. The water circulation process is as follows: Water enters several heat-conducting pipes 8 through several branch pipes 13 from the collection pipe 2 14. After being heated, the water in the heat-conducting pipes 8 enters the collection pipe 11 through several branch pipes 10, and then through the connecting pipe 1 12, the collection pipe 20, and several branch pipes. Water from the photovoltaic panels 7 (19) enters several water storage bags 18. Since the photovoltaic panels 7 operate continuously during the day, generating heat, the water in the storage bags 18 loses heat. Therefore, during the day, driven by the circulating pump 26, the water from the storage bags 18 flows through several branch pipes 21 into the collection pipe 22, and then through the tee 23 back to the collection pipe 24 via the connecting pipe 24, ensuring sufficient heat for the water in the storage bags 18. At night, when the temperature is below a set threshold, the solenoid valve 28 is opened, and the water from the storage bags 18 is injected into the hot water storage tank 102 under gravity, thus preventing excessive temperature differences within the greenhouse. The entire system can extend the growth cycle of crops to a certain extent, ensuring crop yield.

[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the present utility model's technical solution and based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model's technical solution.

Claims

1. A photovoltaic-thermal synergistic water circulation heat storage system for high-altitude greenhouses, characterized in that, include: A base (1) is provided with a sinking groove (101) at the top center of the base (1). A hot water storage tank (102) is provided in the middle of the sinking groove (101). An insulation wall panel (2) is fixedly connected to the rear side of the top of the sinking groove (101). An insulation sloping roof (3) is fixedly connected to the top of the insulation wall panel (2). A light-transmitting frame (4) is provided between the insulation sloping roof (3) and the front end of the sinking groove (101). A photovoltaic panel (7) is fixedly installed on the top of the insulation sloping roof (3). A heat recovery component is provided on the back of the photovoltaic panel (7). Several water storage bags (18) are evenly fixedly installed on the front end of the insulation wall panel (2). The heat recovered by the heat recovery component is stored in the water in the several water storage bags (18). When the temperature is lower than the set threshold at night, the hot water in the water storage bags (18) is injected into the hot water storage tank (102).

2. The photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 1, characterized in that: Both the insulated wall panel (2) and the insulated sloping roof (3) are filled with expanded polystyrene material.

3. The photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 1, characterized in that: The light-transmitting frame (4) includes: a diagonal support frame and a horizontal frame. Several diagonal support frames and a horizontal frame are provided. Several diagonal support frames are arranged horizontally at equal intervals between the heat-insulating inclined roof (3) and the front end of the sinkhole (101). Several horizontal frames are evenly arranged between two adjacent diagonal support frames.

4. The photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 3, characterized in that: Also includes: The thermal insulation blanket (5) has one end fixedly connected to the lower front end of the thermal insulation sloping roof (3) and the other end is a movable end. During the day, the thermal insulation blanket (5) is rolled up to the top of the light-transmitting frame (4). At night, the thermal insulation blanket (5) is lowered and completely covers the outer end face of the light-transmitting frame (4).

5. A photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 3, characterized in that: The base (1) has two side walls on its left and right ends respectively. The two side walls completely cover the left and right ends of the shed formed by the base (1), the insulation wall panel (2), the insulation sloping roof (3) and the light-transmitting frame (4).

6. The photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 1, characterized in that: Also includes: A photovoltaic panel bracket (6) is used to fix the photovoltaic panel (7) to the top of the insulated sloping roof (3). The photovoltaic panel (7) is set from back to front and downward.

7. A photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 6, characterized in that: The heat recovery assembly includes: a heat-conducting pipe (8), a branch pipe 1 (10), a collection pipe 1 (11), a connecting pipe 1 (12), a branch pipe 2 (13), a collection pipe 2 (14), a branch pipe 3 (19), a collection pipe 3 (20), a branch pipe 4 (21), a collection pipe 4 (22), a tee (23), a connecting pipe 3 (24), a circulation pump (26), and a one-way valve 2 (27). Several heat-conducting pipes (8) are provided, and these heat-conducting pipes (8) are evenly and fixedly installed on the back of the photovoltaic panel (7). A branch pipe 1 (10) and a branch pipe 2 (13) are respectively provided at the rear and front ends of the heat-conducting pipes (8). Several branch pipes 1 (10) are all connected to collection pipe 1 (11), and several branch pipes 2 (13) are all connected to collection pipe 2 (14). The middle part of the first collecting pipe (11) is connected to one end of the first connecting pipe (12). The upper and lower ends of the water storage bag (18) are respectively provided with the third branch pipe (19) and the fourth branch pipe (21). Several third branch pipes (19) are connected to the third collecting pipe (20), and several fourth branch pipes (21) are connected to the fourth collecting pipe (22). The other end of the first connecting pipe (12) is connected to the middle part of the third collecting pipe (20). The left end of the fourth collecting pipe (22) is connected to the right end of the tee (23). The left end of the tee (23) is connected to the third connecting pipe (24). The third connecting pipe (24) is connected to the left end of the second collecting pipe (14). The third connecting pipe (24) is respectively provided with the circulation pump (26) and the one-way valve (27).

8. A photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 7, characterized in that: The heat pipe (8) is wrapped with an insulation sleeve (9), which is made of expanded polystyrene.

9. A photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 7, characterized in that: Also includes: A drain pipe (25) and a solenoid valve (28) are provided. One end of the drain pipe (25) is connected to the lower end of the tee (23), and the other end of the drain pipe (25) extends to the lower left side of the hot water storage tank (102). A solenoid valve (28) is provided on the drain pipe (25).

10. A photovoltaic-thermal synergistic water circulation heat storage system for plateau greenhouses according to claim 9, characterized in that: Also includes: Connecting pipe two (15), water pump (16) and one-way valve one (17), one end of the connecting pipe two (15) is connected to the right end of the collecting pipe two (14), and the other end of the connecting pipe two (15) is connected to the output port of the water pump (16). The water pump (16) is placed at the bottom right side of the hot water storage tank (102). One-way valve one (17) is provided on the connecting pipe two (15).

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