Pressure-bearing type vacuum tube solar heat collection system

Abstract

The invention relates to the technical field of solar systems, in particular to a pressure-bearing type vacuum tube solar heat collection system which comprises a pressure-bearing water tank, a vacuum tube is mounted on the outer side of the pressure-bearing water tank, two ends of the vacuum tube are connected with the pressure-bearing water tank through connectors, each connector comprises a three-way tube, and a water nozzle is mounted on the outer side of the end of the vacuum tube. One end of the three-way pipe is connected with a corrugated pipe, one end of the corrugated pipe is connected with the pressure-bearing water tank, an air hole is formed in the third end of the three-way pipe, and a pressure-bearing inner pipe is arranged in the connector. According to the pressure-bearing type vacuum tube solar heat collection system, the connector adopts the design that the three-way pipe is combined with the pressure-bearing inner pipe, and is connected with the pressure-bearing water tank through the corrugated pipe, so that the connecting stability is enhanced, and the pressure-bearing capacity of the system is greatly improved. Even under the condition of high water pressure, the system can still operate stably, and the application range of the system is widened. The vacuum pipe is tightly connected with the pressure-bearing water tank through the connector, and heat loss in a traditional connection mode is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of solar energy systems, and in particular to a pressure-bearing vacuum tube solar energy heat collection system. Background Art

[0002] In the field of solar energy utilization, solar thermal collection systems are devices that convert solar energy into thermal energy and are widely used in household hot water supply, industrial heating, swimming pool heating, etc. Traditional solar thermal collection systems mostly use flat plate collectors or vacuum tube collectors. However, these systems still have shortcomings in some aspects, especially in pressure bearing capacity and thermal efficiency.

[0003] Traditional vacuum tube solar thermal collection systems usually include one or more vacuum tubes that are fixed to the collector plate by brackets and directly exposed to the sun to absorb solar energy. However, a major problem with such systems is their limitation in terms of pressure resistance. Since the vacuum tubes are usually connected to the water tank through simple connectors, this connection method often cannot withstand high pressure, thus limiting the application of the system in places with high water pressure.

[0004] In addition, the traditional vacuum tube solar thermal system also has some shortcomings in terms of thermal efficiency. For example, there is often heat loss at the connection between the vacuum tube and the water tank, which not only reduces the overall thermal efficiency of the system, but may also cause the system to fail to provide sufficient heat energy under certain weather conditions. Summary of the invention

[0005] The purpose of the present invention is to provide a pressure-bearing vacuum tube solar thermal collection system to solve the problem raised in the above background technology that the vacuum tube is usually connected to the water tank through a simple connector, and this connection method often cannot withstand higher pressures, thereby limiting the application of the system in situations with higher water pressure.

[0006] To achieve the above-mentioned purpose, the present invention provides a pressure-type vacuum tube solar thermal collection system, including a pressure water tank, a vacuum tube is installed on the outside of the pressure water tank, both ends of the vacuum tube are connected to the pressure water tank through a connector, the connector includes a tee, a water nozzle is installed on the outside of the end of the vacuum tube, one end of the tee is connected to a bellows, one end of the bellows is connected to the pressure water tank, the third end of the tee is provided with an air hole, a pressure inner tube is provided inside the connector, one end of the pressure inner tube passes through the other end of the tee and is connected to the water nozzle of the vacuum tube, and the other end is connected to the pressure water tank.

[0007] As a preferred solution of the present invention, the bottom of the vacuum tube is supported and fixed by a bracket.

[0008] As a preferred solution of the present invention, an exhaust bin is installed on the outer side of the middle part of the pressure water tank, and the bottom end of the exhaust bin is connected to the air hole through an exhaust pipe.

[0009] As a preferred embodiment of the present invention, a water inlet pipe is connected to one side of the bottom of the pressure water tank, a water inlet is provided on one side of the pressure water tank close to the water inlet pipe, and a water outlet is provided at the connector of the pressure water tank close to the upper end of the vacuum tube.

[0010] As a preferred solution of the present invention, the end of the water inlet pipe is connected to the pressure-bearing inner tube of the lower connector of the vacuum tube, and the water outlet is connected to the pressure-bearing inner tube of the upper connector of the vacuum tube.

[0011] As a preferred embodiment of the present invention, a partition is vertically arranged inside the pressure water tank close to the exhaust bin, a pressure regulating valve is installed on the exhaust bin, an exhaust joint is connected to the bottom of the exhaust bin, and the outer end of the exhaust joint is connected to the exhaust pipe.

[0012] As a preferred solution of the present invention, a first copper tube ferrule is installed at one end of the bellows close to the tee, and a second copper tube ferrule is installed at one end of the tee close to the bellows, and the first copper tube ferrule is snap-fitted with the second copper tube ferrule.

[0013] As a preferred solution of the present invention, sealing rings are installed on both the first copper tube ferrule and the second copper tube ferrule.

[0014] As a preferred solution of the present invention, an interlayer space is provided between the inner wall of the connector and the outer wall of the pressure-bearing inner tube for the gas exhausted from the exhaust chamber to enter.

[0015] As a preferred solution of the present invention, the height of the partition is higher than the water level of the pressure water tank.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the pressure-bearing vacuum tube solar thermal collection system, the connector adopts a design that combines a three-way pipe with a pressure-bearing inner pipe, and is connected to the pressure-bearing water tank through a bellows. This structure not only enhances the stability of the connection, but also greatly improves the pressure-bearing capacity of the system. Even under high water pressure conditions, the system can maintain stable operation, thereby broadening the application range of the system.

[0018] 2. In this pressure-type vacuum tube solar thermal collection system, the vacuum tube is tightly connected to the pressure water tank through a connector, reducing the heat loss in the traditional connection method. At the same time, the design of the exhaust chamber and the exhaust pipe helps to remove the gas in the system, further reducing the thermal resistance and improving the heat conduction efficiency. These measures jointly improve the overall thermal efficiency of the system and ensure that sufficient heat energy can be provided under various weather conditions.

[0019] 3. The use of components such as bellows, first copper tube ferrule and second copper tube ferrule in the pressure-bearing vacuum tube solar thermal collection system makes the installation and maintenance of the system more convenient. These components are not only easy to install and disassemble, but also help reduce errors and damage risks during installation.

[0020] 4. In the pressure-bearing vacuum tube solar thermal collection system, the vacuum tube is supported and fixed by the bracket, and the pressure regulating valve and outlet joint installed on the exhaust chamber enhance the stability and reliability of the system. These designs help reduce vibration and impact during system operation and extend the service life of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A local enlarged schematic diagram of the middle A;

[0023] Figure 3 It is a structural schematic diagram of the pressure water tank in the present invention;

[0024] The meaning of each number in the figure is:

[0025] 1. Pressure water tank; 11. Water inlet pipe; 12. Exhaust pipe; 13. Exhaust chamber; 131. Pressure regulating valve; 132. Air outlet joint; 14. Water inlet; 15. Water outlet; 16. Partition; 2. Vacuum tube; 21. Bracket; 3. Connector; 31. Tee pipe; 311. Air hole; 32. Bellows; 33. First copper tube ferrule; 34. Second copper tube ferrule; 35. Faucet; 36. Pressure inner tube. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The present invention provides a pressure-bearing vacuum tube solar heat collection system, such as Figure 1-Figure 3As shown, it includes a pressure water tank 1, a vacuum tube 2 is installed on the outside of the pressure water tank 1, and both ends of the vacuum tube 2 are connected to the pressure water tank 1 through a connector 3. The connector 3 includes a three-way pipe 31, a water nozzle 35 is installed on the outside of the end of the vacuum tube 2, one end of the three-way pipe 31 is connected to a bellows 32, one end of the bellows 32 is connected to the pressure water tank 1, and the third end of the three-way pipe 31 is provided with an air hole 311. The connector 3 is provided with a pressure inner tube 36 inside, one end of the pressure inner tube 36 passes through the other end of the three-way pipe 31 and is connected to the water nozzle 35 of the vacuum tube 2, and the other end is connected to the pressure water tank 1. The connector adopts a design combining a three-way pipe and a pressure inner tube, one end of the pressure inner tube is tightly connected to the water nozzle of the vacuum tube, and the other end passes through the three-way pipe and is connected to the pressure water tank. This structure not only ensures the firmness of the connection, but also significantly improves the pressure bearing capacity of the system, so that the system can operate stably under high pressure conditions, and broadens the scope of application. The vacuum tube is tightly connected to the pressure water tank through the connector, reducing the heat loss that may exist in the traditional connection method. The design of the pressure inner tube as the main channel for heat conduction helps to efficiently transfer the solar energy absorbed by the vacuum tube to the pressure water tank, thereby improving the overall thermal efficiency of the system. The connector is connected to the pressure water tank with a bellows. The bellows has good flexibility and corrosion resistance, can adapt to different installation environments and angles, simplifies the installation process, and reduces the difficulty of installation. The connector design takes into account future maintenance and upgrade needs. By disassembling the connector, the vacuum tube, pressure inner tube and other components can be easily replaced or repaired without large-scale disassembly of the entire system, which improves the maintainability and scalability of the system. The air holes set on the tee pipe help to remove the gas in the system and prevent the gas from accumulating inside the connector, affecting the heat conduction efficiency and system stability. At the same time, the air holes also provide the system with an additional exhaust channel, which helps to maintain the normal operation of the system.

[0028] In this embodiment, the bottom of the vacuum tube 2 is supported and fixed by a bracket 21. The bottom of the vacuum tube 2 is supported and fixed by the bracket 21, which ensures the stability and safety of the vacuum tube in the system. This design prevents the vacuum tube from shaking or falling off due to external forces, thereby extending the service life of the vacuum tube and improving the reliability of the entire system.

[0029] Specifically, an exhaust bin 13 is installed on the outer side of the middle of the pressure water tank 1, and the bottom end of the exhaust bin 13 is connected to the air hole 311 through the exhaust pipe 12. This design helps to remove excess gas in the system and prevent gas from accumulating in the connector or the pressure water tank, thereby ensuring the normal operation of the system and efficient heat conduction.

[0030] Furthermore, a water inlet pipe 11 is connected to one side of the bottom of the pressure water tank 1, a water inlet 14 is provided on one side of the pressure water tank 1 close to the water inlet pipe 11, and a water outlet 15 is provided at the connector 3 of the pressure water tank 1 close to the upper end of the vacuum tube 2. This layout allows water to smoothly enter and leave the pressure water tank, helps to optimize the water flow path of the system, and improves the heat exchange efficiency.

[0031] Furthermore, the end of the water inlet pipe 11 is connected to the pressure-bearing inner tube 36 of the connector 3 at the lower end of the vacuum tube 2, and the water outlet 15 is connected to the pressure-bearing inner tube 36 of the connector 3 at the upper end of the vacuum tube 2. This connection method ensures that the water flow can circulate directly between the vacuum tube and the pressure water tank through the pressure-bearing inner tube, reducing heat loss and improving the thermal efficiency of the system.

[0032] Furthermore, a partition 16 is vertically arranged inside the pressure water tank 1 near the exhaust chamber 13, a pressure regulating valve 131 is installed on the exhaust chamber 13, a gas outlet joint 132 is connected to the bottom of the exhaust chamber 13, and the outer end of the gas outlet joint 132 is connected to the exhaust pipe 12. This design helps to control the pressure in the system, prevent overpressure, and realize orderly discharge of gas through the pressure regulating valve and the gas outlet joint, ensuring the safe and stable operation of the system.

[0033] Furthermore, a first copper tube ferrule 33 is installed at one end of the bellows 32 close to the tee 31, and a second copper tube ferrule 34 is installed at one end of the tee 31 close to the bellows 32. The first copper tube ferrule 33 is engaged with the second copper tube ferrule 34. The two are connected by engaging. This connection method is simple and easy to install and disassemble, while ensuring the firmness and sealing of the connection.

[0034] Furthermore, sealing rings are installed on the first copper tube ferrule 33 and the second copper tube ferrule 34. The use of the sealing ring further enhances the sealing of the connection, prevents the leakage of water or gas, and thus ensures the normal operation and high efficiency of the system.

[0035] Furthermore, a sandwich space is provided between the inner wall of the connector 3 and the outer wall of the pressure-bearing inner tube 36 for the gas exhausted from the exhaust chamber 13 to enter. This design makes exhaust smoother, avoids pressure increase and heat loss caused by gas accumulation inside the connector, and helps maintain stable operation and efficient heat conduction of the system.

[0036] Furthermore, the height of the partition 16 is higher than the water level of the pressure water tank 1. This design ensures that the water in the pressure water tank does not directly contact the exhaust chamber, thereby preventing water pollution and system corrosion. At the same time, the partition also plays a role of isolation and support, enhancing the structural strength of the pressure water tank.

[0037] When the pressure-bearing vacuum tube solar heat collection system of the present invention is used, the vacuum tube 2 is first used as a solar absorber, the outer layer of which is a transparent glass tube and the inner layer is a heat-absorbing coating. When sunlight shines on the vacuum tube, most of the solar energy is absorbed by the inner heat-absorbing coating and converted into heat energy. The air inside the vacuum tube 2 is evacuated to form a vacuum, which reduces the loss of heat convection and heat conduction, thereby improving the absorption efficiency of solar energy.

[0038] The heat energy absorbed by the vacuum tube 2 is transferred to the water in the pressure water tank 1 through the water nozzle 35 and the pressure inner tube 36 inside the vacuum tube 2. The pressure inner tube 36 is the main channel for heat conduction, and its design ensures efficient heat transfer. After absorbing the heat energy, the water in the pressure water tank 1 increases in temperature and forms hot water. The hot water is transported to the place where hot water is needed through natural circulation or forced circulation (such as by a pump) within the system.

[0039] The water pressure inside the pressure water tank 1 is adjusted through the water inlet 14 and the water outlet 15. When the water pressure in the system increases, the excess water is discharged through the water outlet 15 to maintain the pressure balance in the system. The exhaust chamber 13 and the exhaust pipe 12 are designed to remove excess gas in the system. When the gas pressure in the system increases, the gas enters the exhaust pipe 12 through the air hole 311, and is finally discharged from the system through the pressure regulating valve 131 and the gas outlet joint 132 on the exhaust chamber 13, thereby ensuring the normal operation of the system and efficient heat conduction.

[0040] The vacuum tube 2 is supported and fixed by the bracket 21, ensuring its stability and safety in the system. This design also facilitates the installation and disassembly of the vacuum tube. The connector 3 adopts a design combining a three-way pipe 31 with a pressure-bearing inner tube 36, and is connected to the pressure-bearing water tank 1 through a bellows 32. This connection method not only enhances the pressure-bearing capacity of the system, but also simplifies the installation process and reduces the difficulty of installation. The snap-fitting of the first copper tube ferrule 33 and the second copper tube ferrule 34 and the use of a sealing ring ensure the firmness and sealing of the connection, and reduce the risk of water or gas leakage. The interlayer space set between the inner wall of the connector 3 and the outer wall of the pressure-bearing inner tube 36 provides a channel for the gas discharged from the exhaust bin 13, avoiding the pressure increase and heat loss caused by the accumulation of gas inside the connector. The height design of the partition 16 ensures that the water in the pressure-bearing water tank 1 will not directly contact the exhaust bin 13, thereby preventing water pollution and system corrosion. At the same time, the partition also plays a role of isolation and support, enhancing the structural strength of the pressure-bearing water tank.

[0041] During the operation of the system, the vacuum tube 2 continuously absorbs solar energy and converts it into heat energy and transmits it to the water in the pressure water tank 1. At the same time, the system adjusts the pressure and temperature through the water inlet 14, the water outlet 15 and the exhaust chamber 13 to maintain the stable operation of the system. When it is necessary to maintain or replace the vacuum tube 2, the pressure inner tube 36 and other components, it is only necessary to disassemble the corresponding connector without large-scale disassembly of the entire system, which improves the maintainability and scalability of the system.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pressure-bearing vacuum tube solar thermal collection system, comprising a pressure-bearing water tank (1), characterized in that: A vacuum tube (2) is installed on the outside of the pressure water tank (1), and both ends of the vacuum tube (2) are connected to the pressure water tank (1) via a connector (3). The connector (3) comprises a three-way pipe (31). A water nozzle (35) is installed on the outside of the end of the vacuum tube (2). One end of the three-way pipe (31) is connected to a bellows (32), and one end of the bellows (32) is connected to the pressure water tank (1). The third end of the three-way pipe (31) is provided with an air hole (311). A pressure inner tube (36) is provided inside the connector (3). One end of the pressure inner tube (36) passes through the other end of the three-way pipe (31) and is connected to the water nozzle (35) of the vacuum tube (2), and the other end is connected to the pressure water tank (1).

2. The pressure-bearing vacuum tube solar thermal collection system according to claim 1, characterized in that: The bottom of the vacuum tube (2) is supported and fixed by a bracket (21).

3. The pressure-bearing vacuum tube solar thermal collection system according to claim 1, characterized in that: An exhaust bin (13) is installed on the outer side of the middle part of the pressure water tank (1), and the bottom end of the exhaust bin (13) is connected to the air hole (311) via an exhaust pipe (12).

4. The pressure-bearing vacuum tube solar thermal collection system according to claim 3 is characterized in that: A water inlet pipe (11) is connected to one side of the bottom of the pressure water tank (1), a water inlet (14) is provided on one side of the pressure water tank (1) close to the water inlet pipe (11), and a water outlet (15) is provided at the connector (3) of the pressure water tank (1) close to the upper end of the vacuum tube (2).

5. The pressure-bearing vacuum tube solar thermal collection system according to claim 4 is characterized in that: The end of the water inlet pipe (11) is connected to the pressure-bearing inner tube (36) of the connector (3) at the lower end of the vacuum tube (2), and the water outlet (15) is connected to the pressure-bearing inner tube (36) of the connector (3) at the upper end of the vacuum tube (2).

6. The pressure-bearing vacuum tube solar thermal collection system according to claim 5, characterized in that: A partition plate (16) is vertically arranged inside the pressure water tank (1) near the exhaust chamber (13), a pressure regulating valve (131) is installed on the exhaust chamber (13), and a gas outlet joint (132) is connected to the bottom of the exhaust chamber (13), and the outer end of the gas outlet joint (132) is connected to the exhaust pipe (12).

7. The pressure-bearing vacuum tube solar thermal collection system according to claim 1, characterized in that: A first copper tube ferrule (33) is installed at one end of the bellows (32) close to the tee (31), and a second copper tube ferrule (34) is installed at one end of the tee (31) close to the bellows (32), and the first copper tube ferrule (33) and the second copper tube ferrule (34) are snap-fitted.

8. The pressure-bearing vacuum tube solar thermal collection system according to claim 7, characterized in that: The first copper tube ferrule (33) and the second copper tube ferrule (34) are both equipped with sealing rings.

9. The pressure-bearing vacuum tube solar thermal collection system according to claim 1, characterized in that: An interlayer space is provided between the inner wall of the connector (3) and the outer wall of the pressure-bearing inner tube (36), for gas exhausted from the exhaust chamber (13) to enter.

10. The pressure-bearing vacuum tube solar thermal collection system according to claim 6, characterized in that: The height of the partition (16) is higher than the water level of the pressure water tank (1).

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