Heat storage and supply device of photovoltaic agricultural greenhouse

Abstract

The utility model discloses a heat storage and supply device for a photovoltaic agricultural greenhouse, which comprises a greenhouse main body, a photovoltaic system and a ground source heat pump system arranged between the photovoltaic system and the greenhouse main body, heat supply frames are arranged on the inner walls of the two sides of the greenhouse main body, the ground source heat pump system is connected with a liquid inlet pipe, and the liquid inlet pipe is connected with a liquid outlet pipe. A heat storage cavity is formed in the heat supply frame, a heat supply pipe is installed in the heat storage cavity, a movable plate is arranged on the heat supply pipe in a penetrating mode, and a heat insulation curtain is connected to the front side wall of the movable plate. By arranging the heat insulation curtain, the movable plate and the rodless air cylinder, the heat storage function can be achieved, heat accumulated in the heat storage cavity is rapidly discharged into the greenhouse body after next heat supply is started, and the temperature of the greenhouse body can be rapidly increased; and by arranging a positioning plate, a pin shaft and an electromagnet, the sealing performance of closing the heat storage cavity by the heat insulation curtain can be improved, and the situation of excessive heat loss caused by a gap between the heat insulation curtain and the clamping groove is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of greenhouse heating, in particular to a heat storage and heating device for a photovoltaic agricultural greenhouse. Background Art

[0002] A greenhouse is a facility built with a frame and a film for the insulation and cultivation of agricultural fruits and vegetables. It is often used for out-of-season cultivation of fruits and vegetables. Currently, greenhouses usually use coal-fired heating or geothermal heating. Geothermal heating uses a geothermal heat pump system to use the heat in the natural soil for greenhouse heating. The electricity of the geothermal heat pump system is supported by photovoltaic power generation or wind power generation, realizing new energy agricultural heating cultivation.

[0003] Radiators are usually used for heating in existing greenhouses. Hot water is passed into the radiator, and heat is exchanged when the water flows through the radiator. The heat is dissipated from the radiator to the greenhouse, heating the air in the greenhouse and providing a good growth environment for fruit and vegetable seedlings.

[0004] However, the existing radiator supplies hot water during heating. After the temperature in the greenhouse rises to a preset temperature, the supply of hot water is stopped and the heating is continued. At this time, the temperature on the radiator decreases. When the temperature in the greenhouse is lower than the preset value, hot water is started to be supplied to the radiator again. However, since the radiator does not have a heat storage function, the heat in the hot water needs to be transferred to the radiator first, and then transferred to the air in the greenhouse, there is a problem of slow heating speed and inability to heat up quickly. Utility Model Content

[0005] The purpose of the utility model is to provide a heat storage and heating device for a photovoltaic agricultural greenhouse to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat storage and heating device for a photovoltaic agricultural greenhouse, comprising a greenhouse main body, a photovoltaic system and a ground source heat pump system installed between the photovoltaic system and the greenhouse main body, heating frames are installed on the inner walls on both sides of the greenhouse main body, the ground source heat pump system is connected to a liquid inlet pipe, a heat storage chamber is opened inside the heating frame, a heating pipe is installed inside the heat storage chamber, a movable plate is penetrated on the heating pipe, a heat insulation curtain is connected to the front side wall of the movable plate, connecting blocks are connected on both sides of the movable plate, rodless cylinders are installed on both sides of the heating frame, clamping grooves are opened on the inner walls on both sides of the heating frame, a movable groove is opened on the inner wall of one side of the clamping groove close to the front side of the heating frame, a positioning plate is installed in the movable groove, a pin shaft is penetrated at the bottom of the positioning plate, a torque spring is sleeved on the outer side of the pin shaft, electromagnets are installed on both sides of the heating frame, and a movable ring is connected between the telescopic end of the electromagnet and the positioning plate.

[0007] Preferably, a through hole is formed through the middle of the movable plate, a sealing ring is provided on the inner wall of the through hole, and a sealing gasket is provided on the outer wall of the movable plate.

[0008] Preferably, the width of the movable plate is matched with the width of the inner wall of the heat storage chamber, the two sides of the movable plate are clamped in the clamping groove to form a sliding connection with the heating rack, and the two sides of the movable plate are connected to the moving parts of the rodless cylinder through the connecting block.

[0009] Preferably, the outer diameter of the heating pipe is matched with the inner diameter of the through hole, the heating pipe passes through the movable plate through the through hole, the heating pipe is arranged in an S-shaped zigzag pattern in the heat storage chamber, one end of the heating pipe is connected to the liquid inlet pipe, and the other end is connected to the ground source heat pump system.

[0010] Preferably, the bottom of the thermal insulation curtain is connected to the bottom surface of the heat storage chamber, the top of the thermal insulation curtain is connected to the front side wall of the movable plate, and the two sides of the thermal insulation curtain are clamped in the clamping groove.

[0011] Preferably, the positioning plate is in the shape of a rectangular plate with a 120° bend in the middle, one side of the positioning plate is in contact with the heat insulation curtain, and the other side is rotatably connected to the movable groove via a distribution shaft.

[0012] Preferably, the telescopic end of the electromagnet is movably connected to the positioning plate via a movable ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The heat storage and heating device of the photovoltaic agricultural greenhouse is provided with a heat insulation curtain, a movable plate and a rodless cylinder. During the heating process, the rodless cylinder drives the connecting block to move downward, and the connecting block drives the movable plate to move downward in the heat storage chamber, and the movable plate drives the heat insulation curtain to descend and contract until the heat storage chamber is exposed to the outside as a whole. At this time, the heating pipe contacts the air in the greenhouse body, so that the air in the greenhouse body is heated and the temperature is increased. When the preset temperature value is reached and the heating is stopped, the rodless cylinder drives the movable plate to move up and reset through the connecting block, and the movable plate drives the heat insulation curtain to move up and expand until the heat insulation curtain closes the heat storage chamber. At this time, the heat transferred by the heating pipe is accumulated in the heat storage chamber to realize the heat storage function. After the next heating is started, the heat accumulated in the heat storage chamber is quickly discharged into the greenhouse body, which can quickly heat up the greenhouse body.

[0015] 2. The heat storage and heating device of the photovoltaic agricultural greenhouse is provided with a positioning plate, a pin shaft and an electromagnet. When the movable plate drives the thermal insulation curtain to rise and fall, the electromagnet is turned on and contracts, and the positioning plate is pulled around the pin shaft into the movable groove through the movable ring. The torque spring generates a torque force. When the thermal insulation curtain closes the heat storage chamber, the electromagnet is powered off, and the torque spring rebounds to drive the positioning plate to rotate, so that the positioning plate squeezes the thermal insulation curtain in the clamping groove to avoid excessive loss of heat storage due to a gap between the thermal insulation curtain and the clamping groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the movable plate connection structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the cutaway structure of the movable plate of the utility model from top view;

[0019] Figure 4 For the utility model Figure 3 Enlarged schematic diagram of the structure of part A in the middle.

[0020] In the figure: 1. Greenhouse body; 2. Heating frame; 3. Ground source heat pump system; 4. Liquid inlet pipe; 5. Heat storage chamber; 6. Heating pipe; 7. Movable plate; 71. Sealing gasket; 72. Through hole; 73. Sealing ring; 8. Insulating curtain; 9. Connecting block; 10. Rodless cylinder; 11. Clamping groove; 12. Positioning plate; 13. Pin shaft; 14. Torque spring; 15. Movable groove; 16. Electromagnet; 17. Movable ring; 18. Photovoltaic system. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figures 1 to 4 As shown, the heat storage and heating device of the photovoltaic agricultural greenhouse in this embodiment includes a greenhouse body 1, a photovoltaic system 18, and a ground source heat pump system 3 installed between the photovoltaic system 18 and the greenhouse body 1. The ground source heat pump system 3 transfers the heat of the underground soil to the water tank for storage through the circulation of gas phase changes in the evaporator, compressor, condenser and expansion valve and other components. The water temperature in the water tank gradually increases to provide a heat source for the heating equipment. The inner walls of both sides of the greenhouse body 1 are installed with heating racks 2, and the heating racks 2 are installed on the inner wall of the greenhouse body 1. The ground source heat pump system 3 is connected to a liquid inlet pipe 4, which is used to pass the hot water in the water tank of the ground source heat pump system 3 into the heating equipment. A heat storage chamber 5 is opened inside the heating frame 2, and a heating pipe 6 is installed inside the heat storage chamber 5. The heating pipe 6 is made of a high thermal conductivity material. When hot water flows inside, the heat in the water is transferred to the heating pipe 6, and then transferred to the outside by the heating pipe 6. A movable plate 7 is arranged on the heating pipe 6, and a heat insulation curtain 8 is connected to the front side wall of the movable plate 7. The heat insulation curtain 8 is used to seal the heat storage chamber 5 when storing heat to prevent heat from being transferred out. The movable plate 7 are connected with connecting blocks 9 on both sides, and rodless cylinders 10 are installed on both sides of the heating frame 2. The rodless cylinders 10 are installed on both sides of the heating frame 2 and are used to drive the movable plate 7 to rise and fall. Clamping grooves 11 are opened on the inner walls of both sides of the heating frame 2. A movable groove 15 is opened on the inner wall of one side of the clamping groove 11 close to the front side of the heating frame 2. A positioning plate 12 is installed in the movable groove 15. The positioning plate 12 is used to clamp the thermal insulation curtain 8 in the clamping groove 11 to increase the sealing of the thermal insulation curtain 8 to block the heat storage chamber 5 and reduce heat loss. The bottom of the positioning plate 12 is penetrated by A pin shaft 13 is provided with a torque spring 14 on the outside of the pin shaft 13. Electromagnets 16 are installed inside the two sides of the heating frame 2. A movable ring 17 is connected between the telescopic end of the electromagnet 16 and the positioning plate 12. There are three movable rings 17. Two movable rings 17 are respectively installed on the telescopic end of the electromagnet 16 and the positioning plate 12. The last movable ring 17 is used to connect the other two movable rings 17 to realize the movable connection between the electromagnet 16 and the positioning plate 12, so as to facilitate the electromagnet 16 to pull the positioning plate 12 to make an arc movement when the electromagnet 16 is telescopically moved in a straight line.

[0025] Specifically, a through hole 72 is opened through the middle of the movable plate 7, and the through hole 72 provides a space for the heat supply pipe 6 to pass through the movable plate 7. A sealing ring 73 is provided on the inner wall of the through hole 72, and a sealing gasket 71 is provided on the outer wall of the movable plate 7. The sealing ring 73 and the sealing gasket 71 are both made of heat-resistant rubber and are used for sealing between the movable plate 7 and the inner wall of the heat storage chamber 5 and the heat supply pipe 6.

[0026] Furthermore, the width of the movable plate 7 is matched with the width of the inner wall of the heat storage chamber 5, and the two sides of the movable plate 7 are clamped in the clamping groove 11 to form a sliding connection with the heating frame 2. The two sides of the movable plate 7 are connected to the moving parts of the rodless cylinder 10 through the connecting block 9. The connecting block 9 is driven by the rodless cylinder 10 to rise and fall, and the connecting block 9 drives the movable plate 7 to rise and fall, so that the movable plate 7 drives the thermal insulation curtain 8 to contract or expand, thereby realizing the heating and heat storage state switching functions of the heat storage chamber 5.

[0027] Furthermore, the outer diameter of the heating pipe 6 is matched with the inner diameter of the through hole 72. The heating pipe 6 passes through the movable plate 7 through the through hole 72. The heating pipe 6 is arranged in an S-shaped zigzag pattern in the heat storage chamber 5. One end of the heating pipe 6 is connected to the liquid inlet pipe 4, and the other end is connected to the ground source heat pump system 3. Driven by the ground source heat pump system 3, the hot water in the water tank enters the heating pipe 6 from the liquid inlet pipe 4, and the heat in the water in the heating pipe 6 is transferred to the heating pipe 6. When the insulation curtain 8 is opened to expose the heating pipe 6, the heating pipe 6 contacts the air in the greenhouse main body 1 to complete the heat exchange, so that the air in the greenhouse main body 1 is heated and the temperature is increased.

[0028] Furthermore, the bottom of the thermal insulation curtain 8 is connected to the bottom surface of the heat storage chamber 5, and folds are arranged on the thermal insulation curtain 8 so that the thermal insulation curtain 8 can fold and shrink after being lowered. The top of the thermal insulation curtain 8 is connected to the front side wall of the movable plate 7, and the two sides of the thermal insulation curtain 8 are clamped in the clamping groove 11, and the thermal insulation curtain 8 is lifted and lowered by the movable plate 7.

[0029] Furthermore, the positioning plate 12 is a rectangular plate with a 120° bend in the middle. One side of the positioning plate 12 is in contact with the thermal insulation curtain 8, and the other side is rotatably connected to the movable groove 15 via the distribution shaft 13. When the positioning plate 12 rotates backward, it shrinks into the movable groove 15. When the positioning plate 12 rotates forward, it squeezes the thermal insulation curtain 8. At this time, the front and rear sides of the thermal insulation curtain 8 are respectively squeezed by the inner wall of the clamping groove 11 and the positioning plate 12, thereby achieving the effect of sealing the gap between the thermal insulation curtain 8 and the clamping groove 11, thereby avoiding the situation where there is a gap between the thermal insulation curtain 8 and the clamping groove 11 and excessive loss of heat storage.

[0030] Furthermore, the telescopic end of the electromagnet 16 is movably connected with the positioning plate 12 via the movable ring 17. When the thermal insulation curtain 8 is raised or lowered, in order to avoid the positioning plate 12 being squeezed and affecting its raising or lowering, the electromagnet 16 contracts to pull the positioning plate 12 into the movable groove 15. When the thermal insulation curtain 8 closes the heat storage chamber 5, the electromagnet 16 is powered off and cooperates with the torque spring 14 to rebound and pull the positioning plate 12 to reset, thereby clamping the thermal insulation curtain 8.

[0031] The method of using this embodiment is as follows: when the user actually applies the device to agricultural greenhouse heating, first install the two heating racks 2 on the inner walls of the greenhouse body 1 on both sides, connect one end of the heating pipe 6 to the liquid inlet pipe 4, and the other end to the water tank of the ground source heat pump system 3. During the heating process, the photovoltaic system 18 converts solar energy into electrical energy to power the ground source heat pump system 3. The ground source heat pump system 3 stores the sudden heat from the underground in the water tank, and the temperature in the water tank gradually increases. Driven by the ground source heat pump system 3, the hot water in the water tank enters the heating pipe 6 from the liquid inlet pipe 4, and the rodless cylinder 10 drives the connecting block 9 to move downward, and the connecting block 9 drives the movable plate 7 to move downward in the heat storage chamber 5. The movable plate 7 drives the heat insulation curtain 8 to descend and shrink, and at the same time, the electromagnet 16 is turned on and shrinks, and the positioning plate 12 is pulled around the pin shaft 13 into the movable groove 1 through the movable ring 17. 5, the torque spring 14 generates torque force, and the positioning plate 12 cancels the squeezing effect on the insulation curtain 8 until the heat storage chamber 5 is exposed to the outside as a whole. At this time, the heat in the water in the heating pipe 6 is transferred to the heating pipe 6, and the heating pipe 6 contacts the air in the greenhouse main body 1 to complete the heat exchange, so that the air in the greenhouse main body 1 is heated and the temperature rises. When the preset temperature value is reached and the heating is stopped, the rodless cylinder 10 drives the movable plate 7 to move up and reset through the connecting block 9, and the movable plate 7 drives the insulation curtain 8 to move up and expand until the insulation curtain 8 closes the heat storage chamber 5. The electromagnet 16 is powered off, and the torque spring 14 rebounds and drives the positioning plate 12 to rotate, so that the positioning plate 12 squeezes the insulation curtain 8 in the clamping groove 11. At this time, the heat transferred from the heating pipe 6 is accumulated in the heat storage chamber 5 for heat storage. After the next heating is started, the insulation curtain 8 is opened, and the heat accumulated in the heat storage chamber 5 is quickly discharged into the greenhouse main body 1.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat storage and heating device for a photovoltaic agricultural greenhouse, comprising a greenhouse body (1), a photovoltaic system (18), and a ground source heat pump system (3) installed between the photovoltaic system (18) and the greenhouse body (1), characterized in that: The inner walls of both sides of the greenhouse body (1) are both installed with heating racks (2), the ground source heat pump system (3) is connected to a liquid inlet pipe (4), a heat storage chamber (5) is provided inside the heating rack (2), a heating pipe (6) is installed inside the heat storage chamber (5), a movable plate (7) is provided through the heating pipe (6), a heat insulation curtain (8) is connected to the front side wall of the movable plate (7), both sides of the movable plate (7) are connected to connecting blocks (9), rodless cylinders (10) are installed on both sides of the heating rack (2), and the heating rack (2) A clamping groove (11) is provided on the inner wall of both sides, a movable groove (15) is provided on the inner wall of one side of the clamping groove (11) close to the front side of the heating frame (2), a positioning plate (12) is installed in the movable groove (15), a pin shaft (13) is provided through the bottom of the positioning plate (12), a torque spring (14) is sleeved on the outer side of the pin shaft (13), and electromagnets (16) are installed inside the two sides of the heating frame (2), and a movable ring (17) is connected between the telescopic end of the electromagnet (16) and the positioning plate (12).

2. The heat storage and heating device for photovoltaic agricultural greenhouse according to claim 1 is characterized in that: A through hole (72) is provided through the middle of the movable plate (7), a sealing ring (73) is provided on the inner wall of the through hole (72), and a sealing gasket (71) is provided on the outer wall of the movable plate (7).

3. The heat storage and heating device for a photovoltaic agricultural greenhouse according to claim 1 is characterized in that: The width of the movable plate (7) is compatible with the width of the inner wall of the heat storage chamber (5); both sides of the movable plate (7) are clamped in the clamping groove (11) to form a sliding connection with the heating frame (2); and both sides of the movable plate (7) are connected to the moving parts of the rodless cylinder (10) via the connecting blocks (9).

4. The heat storage and heating device for a photovoltaic agricultural greenhouse according to claim 2 is characterized in that: The outer diameter of the heating pipe (6) is matched to the inner diameter of the through hole (72); the heating pipe (6) passes through the movable plate (7) through the through hole (72); the heating pipe (6) is arranged in an S-shaped zigzag pattern in the heat storage chamber (5); one end of the heating pipe (6) is connected to the liquid inlet pipe (4), and the other end is connected to the ground source heat pump system (3).

5. The heat storage and heating device for photovoltaic agricultural greenhouse according to claim 1 is characterized in that: The bottom of the heat insulation curtain (8) is connected to the bottom surface of the heat storage chamber (5), the top of the heat insulation curtain (8) is connected to the front side wall of the movable plate (7), and the two sides of the heat insulation curtain (8) are clamped in the clamping groove (11).

6. The heat storage and heating device for photovoltaic agricultural greenhouse according to claim 1 is characterized in that: The positioning plate (12) is in the shape of a rectangular plate with a 120° bend in the middle. One side of the positioning plate (12) is in contact with the heat insulation curtain (8), and the other side is rotatably connected to the movable groove (15) via the distribution shaft (13).

7. The heat storage and heating device for a photovoltaic agricultural greenhouse according to claim 1 is characterized in that: The telescopic end of the electromagnet (16) is movably connected to the positioning plate (12) via a movable ring (17).

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