A solar photovoltaic and thermal integrated device and its overheat protection conversion mechanism

Abstract

The present invention relates to a vacuum solar photovoltaic and thermal integrated device and its overheat protection conversion mechanism. In the vacuum solar photovoltaic and thermal integrated device and its overheat protection conversion mechanism, the natural gravity of water is used to close the air duct opening and closing valve. When the system stops running due to an accident, the high temperature evaporates the water, the pressure at the bottom of the pipe decreases, the spring pushes the air duct opening and closing valve upward, the tail pipe sealing surface and the valve head sealing surface and the semicircular plug and the plug seat are opened at the same time, and the air flows in naturally, taking away the heat in the pipe, thereby achieving the purpose of protecting the solar energy from overheating damage. When the system returns to normal and the pipe is refilled with water, the gravity of the water presses the air duct opening and closing valve again, and the normal sealing is achieved. Solar cells are pasted on the photovoltaic base tube in the vacuum layer to obtain heat while generating electricity, thereby making full use of sunlight energy, maximizing solar energy efficiency, and saving energy and protecting the environment.

Description

Technical Field

[0001] The invention relates to a solar photovoltaic and thermal integrated device and an overheat protection conversion mechanism thereof. Background Art

[0002] Among various renewable energy sources, solar energy is the most energy-saving and environmentally friendly. There are two main ways to use solar energy: photothermal conversion and photoelectric conversion. At present, these two solar energy conversion and utilization technologies are relatively mature, and solar photovoltaic and photothermal integrated devices have begun to appear on the market.

[0003] The existing solar photovoltaic and thermal integration technology mainly focuses on laying various forms of fluid (usually water) channels on the back of solar photovoltaic panels to take away heat to reduce the temperature of solar cells and utilize this part of heat energy. Its disadvantages are poor solar thermal insulation effect, low efficiency, and easy freezing in winter. Vacuum water heaters are currently common in high temperature environments in summer. When users turn off the hot water valve and do not use hot water or when there is a water pump failure, the cooling water stops flowing, causing the solar panels to overheat and burn, and causing the solar vacuum tubes to overheat and burst, increasing maintenance time and maintenance costs.

[0004] Therefore, it is necessary to improve the prior art to solve the above technical problems. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an overheat protection conversion mechanism for a solar photovoltaic and thermal integrated device to solve the overheating problem of the solar photovoltaic and thermal integrated device.

[0006] To achieve the above-mentioned purpose, the present invention provides an overheat protection conversion mechanism, which is located at the bottom of a solar photovoltaic and thermal integrated device, and is characterized in that it includes a tail air duct, an air duct opening and closing valve, a spring, a spring seat, an intermediate plug seat and a plug seat net; a tail air duct sealing surface is provided at one end; the spring seat, the intermediate plug seat and the plug seat net are arranged in sequence inside the tail air duct from top to bottom; the air duct opening and closing valve includes a valve head, a push rod and a limit hook, the push rod is connected to the middle of the bottom of the valve head, and the limit hook is connected to the bottom of the valve head The push rod is connected and evenly distributed around the push rod, the push rod is provided with a middle semicircular plug and a tail semicircular plug, and the bottom surface of the valve head is provided with a valve head sealing surface; the push rod and the limit hook are placed inside the tail air duct, the valve head is located at the upper part of the tail air duct, and the valve head sealing surface fits the tail air duct sealing surface; the spring is passed through by the push rod, the upper part is connected to the valve head, and the lower part is connected to the spring seat hanger; the middle semicircular plug cooperates with the middle plug seat, and the tail semicircular plug cooperates with the tail plug seat net.

[0007] When the solar photovoltaic thermal integration device is filled with water, the gravity of the water is used to fit the valve sealing surface with the tail air pipe sealing surface, the middle semicircular plug with the middle plug seat, and the tail semicircular plug with the plug seat net; when the water in the solar photovoltaic thermal integration device is reduced, the spring opens all the seals to allow air to flow into the solar photovoltaic thermal integration device through the tail air pipe.

[0008] Preferably, the inner wall of the tail air pipe is provided with an internal thread structure, and the spring seat hanger, the middle plug seat and the plug seat net all have external threads and are connected to the tail air pipe through the threads.

[0009] Preferably, the intermediate plug seat is divided into an A-type intermediate plug seat and a B-type intermediate plug seat, the A-type intermediate plug seat is a common plug seat, and the B-type intermediate plug seat is provided with a limiting hole to limit the movement of the push rod.

[0010] More preferably, the number of the type A intermediate plug seats is 0, 1 or more than 1, and the number of the type B intermediate plug seats is 1 or more than 1.

[0011] Preferably, the tail air duct is provided with an insect-proof net, which is integrated with the plug seat net for easy assembly.

[0012] Preferably, the middle semicircular plug and the tail semicircular plug are made of inner plastic and outer silicone, the spring seat is a mixture of stainless steel and plastic, and the middle plug seat and the tail plug seat are made of plastic.

[0013] Corresponding to an overheating protection conversion mechanism of the present invention, the present invention also provides a solar photovoltaic and thermal integration device, including the overheating protection conversion mechanism described in the above technical scheme or any preferred technical scheme thereof, as well as a glass outer tube, a photovoltaic base tube, a solar cell and positive and negative electrodes, wherein the photovoltaic base tube is located inside the glass outer tube; the glass outer tube is directly connected to the upper part of the photovoltaic base tube, and the lower part of the glass outer tube is connected to the bottom of the tail air pipe of the overheating protection conversion mechanism; the photovoltaic base tube is connected to the upper part of the tail air pipe; the solar cell is located on the outer surface of the photovoltaic base tube; the electrode is connected to the solar cell, and is connected to the external circuit through the connection between the photovoltaic base tube and the upper part of the glass outer tube.

[0014] Preferably, the enclosed space surrounded by the photovoltaic base tube, the glass outer tube and the tail air pipe of the overheat protection conversion mechanism is a vacuum layer.

[0015] Preferably, the photovoltaic base tube is semicircular in shape, the solar cell is located on the outer plane of the photovoltaic base tube, and a heat exchange medium is provided inside the photovoltaic base tube.

[0016] Preferably, the solar cells are arranged in a tile shape, with the upper ends of the lower row of solar cells pressed against the bottoms of the upper row of solar cells and directly connected via conductive adhesive.

[0017] As described above, the present invention relates to an overheat protection conversion mechanism, which has the following beneficial effects: in a solar photovoltaic thermal integration device and its overheat protection conversion mechanism of the present invention, when the solar photovoltaic thermal integration device is filled with water during normal operation, the gravity of the water is used to seal the valve sealing surface with the tail air pipe sealing surface, the middle semicircular plug with the middle plug seat, and the tail semicircular plug with the tail plug seat net, and the flow of water is used to take away the heat to protect the solar photovoltaic thermal integration device; when there is a power outage, water outage, or the water pump cannot work normally due to an accident, the water in the solar photovoltaic thermal integration device is evaporated and reduced, and the spring in the overheat protection conversion mechanism opens the seal, allowing air to flow into the solar photovoltaic thermal integration device through the tail air pipe, and the flow of air is used to take away the heat to prevent the solar photovoltaic thermal integration device from overheating. When the system returns to normal and the pipe is filled with water again, the gravity of the water presses the air duct opening and closing valve again, and the normal operation of the seal is achieved. Solar cells are pasted on the photovoltaic base tube in the vacuum layer to obtain heat while generating electricity, thereby making full use of sunlight energy, maximizing solar energy efficiency, and saving energy and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is an overall schematic diagram of a solar photovoltaic and thermal integrated device of the present invention.

[0019] Figure 2 Shown is an enlarged schematic diagram of a solar photovoltaic and thermal integration device of the present invention when the overheat protection conversion mechanism is closed.

[0020] Figure 3 Shown is an enlarged schematic diagram of an overheat protection conversion mechanism of a solar photovoltaic and thermal integrated device of the present invention when it is open.

[0021] 1 Tail air duct

[0022] 2 Duct opening and closing valve

[0023] 3 Spring seat hanger

[0024] 4 Plug seat

[0025] 5. Saizuo.com

[0026] 6 Photovoltaic substrate

[0027] 7. Putter

[0028] 8 Half-round plug

[0029] 9 Thread

[0030] 10 Electrodes

[0031] 11 Valve head

[0032] 12 Spring

[0033] 13 Photovoltaic cells

[0034] 14 Glass outer tube

[0035] 15 Vacuum Layer

[0036] 16 tail inner thread

[0037] 17 Limiting hole

[0038] 18 Insect Screen

[0039] 19 Limit hook

[0040] 20 Tail pipe sealing surface

[0041] 21 Valve head sealing surface DETAILED DESCRIPTION

[0042] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0043] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0044] like Figure 1-3As shown, the present invention provides an overheat protection conversion mechanism, which is located at the bottom of the solar photovoltaic and thermal integration device, and includes a tail air duct 1, a duct opening and closing valve 2, a spring 12, a spring seat 3, an intermediate plug seat 4 and a plug seat net 5; a tail air duct 1 is provided at one end thereof with a tail air duct sealing surface 20, and a tail inner thread 16 is provided inside the tail air duct 1; the spring seat 3, the intermediate plug seat 4 and the plug seat net 5 are sequentially arranged inside the tail air duct 1 from top to bottom; the duct opening and closing valve 2 includes a valve head 11, a push rod 7 and a limit hook 19, and the push rod 7 is connected to the middle of the bottom of the valve head 11 Then, the limit hook 19 is connected to the bottom of the valve head 11 and is evenly distributed around the push rod 7. A semicircular plug 8 is provided on the push rod 7, which is divided into a middle semicircular plug and a tail semicircular plug. A valve head sealing surface 21 is provided on the bottom of the valve head 11; the push rod 7 and the limit hook 19 are placed inside the tail air duct 1, the valve head 11 is located at the upper part of the tail air duct 1, and the valve head sealing surface 21 fits with the tail air duct sealing surface 20; the spring 12 is passed through the push rod 7, the upper part is connected to the valve head 11, and the lower part is connected to the spring seat hanger 3; the middle semicircular plug cooperates with the middle plug seat 4, and the tail semicircular plug cooperates with the plug seat net 5.

[0045] like Figure 1 As shown, the present invention also provides a solar photovoltaic and thermal integration device, including an overheat protection conversion mechanism, a glass outer tube 14, a photovoltaic base tube 6, a solar cell 13 and positive and negative electrodes 10, wherein the photovoltaic base tube 6 is located inside the glass outer tube 14; the glass outer tube 14 is directly connected to the upper part of the photovoltaic base tube 6, and the lower part of the glass outer tube 14 is connected to the bottom of the tail air pipe 1 of the overheat protection conversion mechanism; the photovoltaic base tube 6 is linked to the upper part of the tail air pipe 1, and the solar cell 13 is located on the outer surface of the photovoltaic base tube 6; the electrode 10 is connected to the solar cell 13, and is connected to the external circuit through the connection between the photovoltaic base tube 6 and the upper part of the glass outer tube 14.

[0046] By using a solar photovoltaic thermal integration device and its overheat protection conversion mechanism of the present invention, during normal operation, the gravity of the circulating cooling water is used to keep the valve head sealing surface 21 of the air duct opening and closing valve 2 and the tail pipe sealing surface 20 of the tail air duct 1 in a static sealing state. When the circulating cooling water stops working unexpectedly, the high-temperature water in the photovoltaic base tube 6 evaporates rapidly. After the water volume is reduced and the pressure is relieved, the spring 12 pushes the air duct opening and closing valve 2 upward, opens the valve head sealing surface 21 and contacts the tail pipe sealing surface 20, and the semicircular plug 8 is in contact with the middle plug seat 4 and the plug seat net 5. The outside air flows in naturally, takes away the heat in the photovoltaic base tube 6, and protects the solar cell 13 from high temperature damage. In this way, due to the existence of the overheat protection conversion mechanism, the solar cell 13 of the solar photovoltaic thermal integration device of the present invention works stably all the time, ensuring its working efficiency. In this way, the rising of hot air and the gravity of water are fully utilized to realize the opening and closing of airflow and water flow, which can ensure convenient supply. When the system returns to normal and the pipe is filled with water again, the gravity of the water presses the air duct opening and closing valve 2 again, and the normal operation of the seal is realized.

[0047] Based on the technical solutions of the above embodiments, the solar photovoltaic and thermal integrated device and its overheat protection conversion mechanism of the present invention fully utilize sunlight energy to maximize solar energy efficiency, thereby saving energy and protecting the environment.

[0048] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An overheat protection conversion mechanism, located at the bottom of a solar photovoltaic and thermal integrated device, characterized in that: The cam is provided with a sealing surface of the tail air duct, and the spring is passed through the cam, and the upper part is connected to the valve head, and the lower part is connected to the spring seat; the middle semicircular plug cooperates with the middle plug seat, and the rear semicircular plug cooperates with the plug seat net.

2. The overheat protection conversion mechanism according to claim 1, characterized in that: The inner wall of the tail air pipe is provided with a thread structure, and the spring seat hanger, the middle plug seat and the plug seat net are connected to the tail air pipe through threads.

3. The overheat protection conversion mechanism according to claim 1, characterized in that: The intermediate plug seat is divided into an A-type intermediate plug seat and a B-type intermediate plug seat. The A-type intermediate plug seat is a common plug seat, and the B-type intermediate plug seat is provided with a limiting hole to limit the movement of the push rod.

4. The overheat protection conversion mechanism according to claim 3, characterized in that: The number of the A-type intermediate plug seats is 0, 1 or more than 1, and the number of the B-type intermediate plug seats is 1 or more than 1.

5. The overheat protection conversion mechanism according to claim 1, characterized in that: The tail air duct is provided with an insect-proof net, which is integrated with the plug seat net.

6. The overheat protection conversion mechanism according to claim 1, characterized in that: The materials of the middle semicircular plug and the tail semicircular plug are plastic inside and silicone outside, the spring seat is a mixture of stainless steel and plastic, and the materials of the middle plug seat and the tail plug seat are plastic.

7. A solar photovoltaic and thermal integrated device, characterized in that: It comprises the overheat protection conversion mechanism as described in any one of claims 1 to 6, as well as a glass outer tube, a photovoltaic base tube, a solar cell and positive and negative electrodes, wherein the photovoltaic base tube is located inside the glass outer tube; the glass outer tube is directly connected to the upper part of the photovoltaic base tube, and the photovoltaic base tube is linked to the upper part of the tail air duct; the lower part of the glass outer tube is connected to the bottom of the tail air duct of the overheat protection conversion mechanism; the photovoltaic base tube is connected to the upper part of the tail air duct; the solar cell is located on the outer surface of the photovoltaic base tube; the electrode is connected to the solar cell, and is connected to the external circuit through the connection between the photovoltaic base tube and the upper part of the glass outer tube.

8. The solar photovoltaic and thermal integrated device according to claim 7, characterized in that: The photovoltaic base tube, the glass outer tube and the tail air pipe of the overheat protection conversion mechanism are made of glass, and the enclosed space surrounded by the three is a vacuum layer.

9. The solar photovoltaic and thermal integrated device according to claim 7, characterized in that: The photovoltaic base tube is in a semicircular shape, the solar cell is located at the outer plane of the photovoltaic base tube, and a heat exchange medium is arranged inside the photovoltaic base tube.

10. The solar photovoltaic and thermal integrated device according to claim 7, characterized in that: The solar cells are arranged in a tile shape, with the upper ends of the lower row of solar cells pressed against the bottoms of the upper row of solar cells and directly connected via conductive adhesive.

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