Fishery facility heat storage and supply system based on solar concentration

Abstract

The present invention provides a heat storage and supply system for fishery facilities based on solar concentration, which utilizes sunlight collected by a solar concentrating heat collecting unit to heat air serving as a circulating medium, and transports the hot air to the soil below a fish pond through a heat exchange pipe, where the heat is stored in the soil or directly used to heat the fish pond; the heat storage and supply system comprises: a solar concentrating heat collecting unit for collecting and concentrating sunlight to heat the air flowing through the unit; a heating pipe arranged in the soil at the bottom of the fish pond and in contact with the bottom of the fish pond; a heat storage pipe located in the soil below the heating pipe; a circulating gas output pipe provided with a fan being connected at one end to the solar concentrating heat collecting unit, and at the other end to the heating pipe and the heat storage pipe respectively; the connection between the heating pipe or the heat storage pipe and the circulating gas output pipe is achieved by switching a switching valve; the heating pipe and the heat storage pipe sequentially pass through the soil below the fish pond and are connected to the solar concentrating heat collecting unit through the circulating gas input pipe.

Description

Technical Field

[0001] The present invention relates to a heat storage and supply system, in particular to a fishery heat storage and supply system based on solar energy concentration, belonging to the technical field of solar energy supply for fishery farming. Background Art

[0002] In cold regions, winter aquaculture often fails to reach the temperatures required for fish growth and reproduction due to factors like outdoor environmental factors and permafrost, hindering aquaculture during the winter. Traditional aquaculture techniques also present the following challenges: ① Electricity is often used to heat the pond water, resulting in a high energy demand; ② Simply raising the pond water temperature and using the water for heat storage has limited heat storage capacity; ③ Inefficient solar energy utilization results in high energy consumption and costs; and ④ Winter pond drainage easily freezes, making de-icing difficult and negatively impacting aquaculture operations. Consequently, these techniques fail to meet the demands of continuous, efficient, and environmentally friendly aquaculture. Summary of the Invention

[0003] In view of this, the present invention provides a heat storage and supply system for fishery facilities based on solar concentration, which uses the sunlight collected by the solar concentration and heat collection unit to heat the air as the circulating medium, and transports the hot air to the soil under the fish pond through a heat exchange pipe, stores the heat in the soil or directly provides heat for the fish pond, thereby meeting the continuous, efficient and green production needs of fishery farming.

[0004] The technical solution adopted by the present invention is: a heat storage and supply system for fishery facilities based on solar energy concentration, comprising: a solar energy concentration heat collection unit and a heat exchange pipe;

[0005] The solar concentrating and heat collecting unit is used to collect and concentrate sunlight to heat the air flowing through it as a circulating medium;

[0006] The heat exchange pipeline includes: a heat supply pipeline and a heat storage pipeline, the heat supply pipeline is arranged in the soil at the bottom of the fish pond and contacts the bottom of the fish pond; the heat storage pipeline is located in the soil below the heat supply pipeline;

[0007] One end of the circulating gas output pipeline equipped with a fan is connected to the solar concentrating heat collection unit, and the other end has two interfaces for connecting to the heating pipeline and the heat storage pipeline respectively; the connection between the heating pipeline and the circulating gas output pipeline or the connection between the heat storage pipeline and the circulating gas output pipeline is achieved by switching the switching valves provided at the two interfaces;

[0008] The heating pipe and the heat storage pipe pass through the soil under all the fish ponds in sequence and are connected to the other end of the solar concentrating and heat collecting unit through the circulating gas input pipe.

[0009] As a preferred embodiment of the present invention, the fish pond is provided with a water discharge unit connected to the heat exchange pipe; the heating pipe and the heat storage pipe are both provided with one-way water seepage holes; after the water discharge unit is opened, the water in the fish pond is discharged through the one-way water seepage holes.

[0010] As a preferred embodiment of the present invention, anti-backflow bristles are arranged below the one-way water seepage hole.

[0011] As a preferred embodiment of the present invention, the water discharge unit comprises: a float, a trapezoidal water blocking plug and a trapezoidal water discharge port;

[0012] The water discharge unit is sunken into the heating pipe; a water discharge hole communicating with the trapezoidal water discharge port is provided at a position corresponding to the water discharge unit on the bottom surface of the fish pond;

[0013] The float used to display the water level in the fish pond is connected to a trapezoidal water blocking plug through a connecting rope. The trapezoidal water blocking plug is located inside the trapezoidal drain outlet. When the float straightens the connecting rope, the trapezoidal water blocking plug is located at the top of the trapezoidal drain outlet, blocking the drain hole; when the water level in the fish pond drops and the connecting rope is loosened, the trapezoidal water blocking plug falls to the bottom of the trapezoidal drain outlet, exposing the drain hole.

[0014] As a preferred embodiment of the present invention, the switching valve is a flexible one-way valve with a counterweight, and the switching valve is arranged at the connection point between the heating pipe and the circulating gas output pipe, with one side of the switching valve connected to the lower end of the heating pipe at the interface, and the rest of the valve is in a free state;

[0015] The diameter of the heat supply pipe is smaller than the diameter of the heat storage pipe;

[0016] Under normal conditions, the switching valve is in a horizontal state under the action of the counterweight, blocking the passage between the circulating gas output pipeline and the heat storage pipeline; at this time, the fan rotates forward, and the high-temperature air provided by the solar concentrating and collecting unit enters the heating pipeline; when the fan rotates in the reverse direction and increases the flow rate, the switching valve is pushed upward by the gas in the heat storage pipeline, closing the heating pipeline, and the heat storage pipeline is connected to the circulating gas output pipeline.

[0017] As a preferred embodiment of the present invention, the fish pond is half embedded in the soil.

[0018] As a preferred embodiment of the present invention, the fishery facility has a wall on the north side; a transparent film is provided on the south side; the solar concentrating and heat collecting unit is located outside the transparent film on the south side of the fishery facility;

[0019] The outer surface of the fish pond facing the sun has a reflective layer A;

[0020] The inner surface of the enclosure wall is provided with a light-reflecting layer B; the side of the fish pond opposite to the enclosure wall is provided with a light-absorbing layer.

[0021] As a preferred embodiment of the present invention, the gap between two adjacent fish ponds is filled with heat storage material.

[0022] As a preferred embodiment of the present invention, a heat-insulating layer is provided on the outside of the fish pond.

[0023] As a preferred embodiment of the present invention, the solar concentrating and heat collecting unit is composed of a plurality of trough-type composite multi-curved concentrating and heat collecting devices connected in series or / and in parallel.

[0024] Beneficial effects:

[0025] (1) The heat storage and supply system of the present invention uses only solar energy to provide energy for wintering fishery breeding facilities. The solar rays collected by the solar concentrating and heat collecting unit are used to heat the air as the circulating medium. The hot air is transported to the soil under the fish pond through the heat exchange pipe, and the heat is stored in the soil or directly used to heat the fish pond, thereby realizing wintering fishery breeding facilities in cold areas.

[0026] (2) In the heat storage and heat supply system of the present invention, in order to compensate for the problem of discontinuous solar energy supply, a heat storage pipeline and a heat supply pipeline are set up, and the heat storage pipeline is arranged below the heat supply pipeline. By adjusting the flow direction and flow rate of the fan and coordinating with the switching valve, the circulating medium is transmitted in the heat storage pipeline or the heat supply pipeline, thereby realizing automatic switching between the heat storage mode and the heating mode, improving the utilization efficiency of solar energy, and ensuring the continuity and effectiveness of the system's heating supply.

[0027] (3) In the heat storage and supply system of the present invention, a reflective layer is set on the sunny side of the fish pond, which can not only reflect sunlight into the fishery facility, thereby improving the air temperature and illumination in the fishery facility; it can also reflect the incident sunlight to the back wall of the fishery facility, and then the reflective layer of the back wall reflects the incident solar radiation to the shady side of the fish pond, thereby realizing the photothermal conversion of the incident solar radiation. Finally, the heat is absorbed by the heat storage material between the fish ponds, thereby significantly reducing the heat dissipation loss and improving the efficient utilization of the sunlight entering the facility, thereby effectively making up for the lack of heating of the soil at the bottom of the fish pond and expanding the way of using solar energy in fishery farming.

[0028] (4) In the heat storage and supply system of the present invention, when heat storage and supply are not being carried out, the heat exchange pipe is used to realize the automatic discharge of the water in the fish pond: when the water level in the fish pond drops, the float drops accordingly, the connecting rope becomes loose, the trapezoidal water plug drops and exposes the drain port, and the water is finally discharged into the soil through the one-way seepage hole set at the bottom of the heat exchange pipe, which can reduce the waste of resources and labor costs caused by the use of mechanical devices for drainage.

[0029] (5) In the water discharge unit, anti-backflow bristles are provided on the outside of the one-way water seepage hole. While ensuring that water seeps into the soil, the anti-backflow bristles can prevent soil from entering the heat exchange pipe.

[0030] (6) In the present invention, the solar concentrating heat collecting unit serves as the heat source of the fishery facility heat storage and supply system, and is composed of a plurality of trough-type composite multi-curved concentrating heat collectors connected in series and / or in parallel, which can achieve efficient solar energy concentration and heat collection, thereby improving the utilization rate of solar energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of the heat storage and supply system for fishery facilities based on solar concentration according to the present invention;

[0032] Figure 2 A top view of a fish pond used in the solar energy concentration-based heat storage and supply system for fishery facilities of the present invention;

[0033] Figure 3 Schematic diagram of light propagation in the heat storage and supply system of fishery facilities based on solar concentration according to the present invention;

[0034] Figure 4 Schematic diagram of gas flow during heating by the heat storage and supply system for fishery facilities based on solar concentration according to the present invention;

[0035] Figure 5 Schematic diagram of gas flow during heat storage in the fishery facility heat storage and supply system based on solar concentration according to the present invention;

[0036] Figure 6 A side view of a heat exchange pipe in a heat storage and supply system for fishery facilities based on solar concentration according to the present invention;

[0037] Figure 7 Schematic diagram of water discharge from a fish pond in a fishery facility heat storage and supply system based on solar concentration according to the present invention;

[0038] Figure 8 This is a schematic diagram of the installation of a water discharge unit in the fishery facility heat storage and supply system based on solar concentration according to the present invention;

[0039] Among them: 1-fishing facilities; 2-fence; 3-soil; 4-solar concentrating and collecting unit; 5-composite multi-curved concentrating collector; 6-fan; 7-heat exchange pipe; 8-heat supply pipe; 9-heat storage pipe; 10-switching valve; 11-one-way water seepage hole; 12-fish pond; 13-insulation layer; 14-light-absorbing layer; 15-water body; 16-heat storage material; 17-float; 18-overflow outlet; 19-reflective layer A; 20-water discharge unit; 21-connecting rope; 22-trapezoidal water plug; 23-trapezoidal water discharge outlet; 24-anti-backflow brush. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0041] Example 1:

[0042] In order to solve the problem that fishery farming cannot operate continuously in autumn and winter, and the primary energy consumption in the heating process is high, which cannot meet the continuous, efficient and green production needs of fishery farming, this embodiment provides a fishery facility heat storage and supply system based on solar concentration; the system uses the sunlight collected by the solar concentrating heat collection unit to heat the air as the circulating medium, and under the drive of the fan, the hot air is transported to the soil under the fish pond through the heat exchange pipe, and the heat is stored in the soil or directly used to heat the fish pond, thereby realizing wintering aquaculture in cold areas.

[0043] like Figure 1 As shown, the fishery facility heat storage and supply system based on solar concentration includes: a solar concentration heat collection unit 4 and a heat exchange pipe 7; wherein the fishery facility 1 includes: a plurality of fish ponds 12 arranged in the same area.

[0044] The solar concentrating and collecting unit 4, serving as the heat source for the fishery facility's heat storage and supply system, is comprised of multiple trough-type composite multi-curved concentrating and collecting units 5 connected in series, parallel, or in a combination of these. The solar concentrating and collecting unit 4 collects and concentrates sunlight to heat the air circulating through it, serving as the circulating medium. The solar concentrating and collecting unit 4 transfers the heat (i.e., the heated air) to a heat exchange pipe 7, where it exchanges heat with the soil 3 at the bottom of the fish pond 12 or the water within the fish pond 12, thereby storing or supplying heat to the fishery facility and ensuring the requirements of aquaculture.

[0045] Specifically, the heat exchange pipeline 7 includes a heat supply pipeline 8 and a heat storage pipeline 9. A circulating air output pipeline, equipped with a fan 6, is connected to the solar concentrating and collecting unit 4 at one end and has two ports at the other end, one for connecting to the heat supply pipeline 8 and the other for connecting to the heat storage pipeline 9. Switching valves 10, located at the two ports, are used to switch between the heat supply pipeline 8 and the circulating air output pipeline, or the other for connecting to the heat storage pipeline 9. The heat supply pipeline 8 is buried in the soil 3 at the bottom of the fish pond 12 and contacts the bottom of the fish pond 12, directly supplying heat to the water 15 in the fish pond 12. The heat storage pipeline 9 is located in the soil 3 below the heat supply pipeline 8. The heat supply pipeline 8 and the heat storage pipeline 9 sequentially pass through the soil 3 below all the fish ponds 12 and then connect to the solar concentrating and collecting unit 4 via the circulating air input pipeline. This means that the air after heat exchange enters the solar concentrating and collecting unit 4 through the circulating air input pipeline, thus achieving air circulation.

[0046] As an example, the heating pipe 8 can be branched to form multiple parallel heating sub-pipelines, such as Figure 1 As shown, in this example, the heating pipe 8 is divided into two parallel heating sub-pipes on the same plane.

[0047] As an example, the heat storage pipe 9 can be branched to form a plurality of parallel heat storage sub-pipelines, and the plurality of parallel heat storage sub-pipelines can be distributed in parallel and at intervals in the same plane or distributed in the vertical direction.

[0048] The working principle of the heat storage and supply system for fishery facilities based on solar concentration is as follows: the sun's rays are collected and concentrated by the solar concentrating heat collecting unit 4 and heat the circulating medium air flowing through it; when the water temperature in the fish pond 12 drops and needs to be raised (i.e. the monitored temperature in the fish pond 12 is lower than the set value), the control switching valve 10 is controlled to connect the heating pipe 8 and the circulating gas output pipe (i.e. the connection between the heat storage pipe 9 and the circulating gas output pipe is closed at this time), such as Figure 4 As shown, the high-temperature air provided by the solar concentrating heat collecting unit 4 exchanges heat with the water 15 in the heat storage fish pond 12 through the heat supply pipe 8, thereby heating the water 15; when the temperature of the water 15 in the heat storage fish pond 12 is high (that is, the monitored temperature in the heat storage fish pond 12 is higher than the set value), the control switching valve 10 is connected to the heat storage pipe 9 and the circulating gas output pipe (that is, the connection between the heating pipe 8 and the circulating gas output pipe is closed at this time), as shown in FIG. Figure 5 As shown, the air heated by the solar concentrating heat collection unit 4 in the heat storage pipe 9 exchanges heat with the soil 3 to store heat. It can be seen that this heat storage system exchanges heat in the shallow soil (i.e., the part directly in contact with the bottom of the fish pond) to achieve heat supply, and exchanges heat in the deep soil to achieve heat storage.

[0049] Example 2:

[0050] Based on the above embodiment 1, a preferred form of fishery facilities is given.

[0051] As an example, the north side of the fishery facility has a wall 2 as the back wall of the fishery facility; the south side of the fishery facility can be provided with a transparent film to form an enclosure unit of the fishery facility 1. The solar concentrating and heat collecting unit 4 is located outside the transparent film on the south side of the fishery facility.

[0052] As an example, fish pond 12 is further configured with half embedded in soil 3 and the other half exposed to the air. An overflow outlet 18 is provided on the upper side of fish pond 12. An insulation layer 13 is provided on the sun-facing side of the upper half of fish pond 12 (i.e., the portion exposed to the air). A reflective layer A19 is sprayed on the outer side of insulation layer 13 to form a reflective material. Reflective layer A19 reflects sunlight incident on fish pond 12 back into fishery facility 1, thereby increasing the air temperature within fishery facility 1.

[0053] The inner surface of enclosure 2 serves as the primary sunlight-receiving surface within fishery facility 1. Reflective material is sprayed onto the inner surface of enclosure 2 to form a reflective layer B. The shady side of fish pond 12 (i.e., the side of fish pond 12 opposite the inner surface of enclosure 2) is sprayed with a light-absorbing material to form a light-absorbing layer 14. Furthermore, the gaps between the sunny and shady sides of two adjacent fish ponds 12 are filled with heat storage material 16. Sunlight that strikes the inner surface of enclosure 2 is reflected by reflective layer B, absorbed by light-absorbing layer 14, and the heat energy is stored in heat storage material 16, providing heat to the water 15 in fish pond 12 from the side. Simultaneously, reflective layer A 19 also reflects some of the sunlight that strikes fish pond 12 back onto the inner surface of enclosure 2. The reflective layer B on the inner surface of enclosure 2 then reflects the incident solar radiation back to light-absorbing layer 14 on the shady side of the fish pond.

[0054] like Figure 3 As shown, sunlight b striking the inner surface of enclosure 2 is reflected by reflective layer B onto light-absorbing layer 14 on the sun-shaded side of fish pond 12. Heat storage material 16 stores the heat energy carried by the sunlight received by light-absorbing layer 14. Sunlight a striking the inner surface of enclosure 2 is reflected by reflective layer A19 onto the south-facing transparent film, which then reflects it onto the rear wall of the fishery facility. The rear wall's reflective layer then reflects the incident solar radiation back to the shady side of the fish pond. This significantly reduces heat loss and improves the efficient use of sunlight entering the facility.

[0055] As a result, part of the sunlight entering the fishery facility 1 shines on the sunny side of the fish pond 12, and is reflected into the fishery facility 1 through the reflective layer A19 outside the sunny side, thereby improving the illumination in the fishery facility 1; part of the sunlight shines on the north side wall 2, and the light is reflected by the reflective layer B on the inner surface of the wall 2 to the shady side of the fish pond 12. After receiving the sunlight, the light-absorbing layer 14 on the shady side stores the heat energy carried by the sunlight into the heat storage material 16.

[0056] Example 3:

[0057] Based on the above-mentioned embodiment 1 or embodiment 2, this embodiment provides an example of the switching valve 10 .

[0058] like Figure 6As shown, in this example, the switching valve 10 is a flexible one-way valve with a counterweight, that is, the switching valve 10 is an elastic baffle with a counterweight at the bottom. In the heat exchange pipe 7, the heat supply pipe 8 is located above the heat storage pipe 9, and both are connected to the circulating gas output pipe; the diameter of the heat supply pipe 8 is smaller than the diameter of the heat storage pipe 9; the switching valve 10 is set at the connection between the heat supply pipe 8 and the circulating gas output pipe, one side of which is connected to the lower end of the heat supply pipe 8 at the interface, and the rest is in a free state. Under normal conditions, the switching valve 10 is in a horizontal state under the action of the counterweight, blocking the passage between the circulating gas output pipe and the heat storage pipe 9. At this time, the fan 6 rotates forward, and the gas flow direction in the heat exchange pipe 7 is as follows Figure 4 As shown (i.e., the gas flows counterclockwise, and the gas flow rate is relatively low at this time), the high-temperature air provided by the solar concentrating heat collecting unit 4 enters the heating pipe 8, exchanges heat with the water 15 in the fish pond 12, and heats the water 15. When the temperature of the water 15 in the fish pond 12 is relatively high and heat storage is required, the fan 6 is controlled to rotate in the reverse direction and increase the flow rate. At this time, the gas in the heat exchange pipe 7 flows in the reverse direction (i.e., the gas flows clockwise at this time, and the circulating gas output pipe is inlet and the circulating gas input pipe is outlet). The flow direction is as shown in FIG. Figure 5 As shown, the switching valve 10 is pushed up by the gas in the heat storage pipe 9 (since the diameter of the heat storage pipe 9 is larger than that of the heating pipe 8, its flow resistance is smaller, and the air pressure is changed by changing the flow rate to ensure that the switching valve 10 is in the lifted state), closing the heating pipe 8. At this time, the heat storage pipe 9 is opened to store heat, thereby realizing automatic switching of the storage and supply states. As a result, the switching of the communication path by the switching valve 10 can be realized by changing the direction of the airflow.

[0059] The switching valve 10 using this structural form can change the position state of the switching valve 10 by changing the gas flow direction and flow rate of the fan 6, that is, by adjusting the flow direction and flow rate of the fan in conjunction with the switching valve to realize the transmission of the circulating medium in the heat storage pipe or the heating pipe, thereby realizing automatic switching of the heat storage mode or the heating mode, thereby exchanging heat with the fish pond to increase the water temperature in the fish pond, or storing heat in the soil of the facility.

[0060] Example 4:

[0061] On the basis of the above-mentioned embodiments 1 to 3, a water discharge unit 20 is further provided on the bottom surface of the fish pond 12 . The water discharge unit 20 can realize automatic water exchange of the fish pond 12 by utilizing the heat exchange pipe 7 .

[0062] like Figure 7 and Figure 8 As shown, the water discharge unit 20 includes: a float 17, a trapezoidal water blocking plug 22 and a trapezoidal water discharge port 23; wherein the trapezoidal water discharge port 23 is a trapezoid with a larger bottom and a smaller top.

[0063] The water discharge unit 20 is sunken into the heating pipe 8; a water discharge hole connected to the trapezoidal water discharge port 23 is provided at a position corresponding to the water discharge unit 20 on the bottom surface of the fish pond 12; a float 17 for displaying the water level in the fish pond 12 is connected to a trapezoidal water blocking plug 22 through a connecting rope 21, and the trapezoidal water blocking plug 22 is located inside the trapezoidal water discharge port 23. When the float 17 straightens the connecting rope 21, the trapezoidal water blocking plug 22 is located at the top of the trapezoidal water discharge port 23, blocking the trapezoidal water discharge port 23 and the water discharge hole.

[0064] In addition, if Figure 6 As shown, one-way water seepage holes 11 are provided at the lowest points of the heating pipe 8 and the heat storage pipe 9 in the heat exchange pipe 7, so that the water in the heating pipe 8 and the heat storage pipe 9 can seep into the soil.

[0065] The working principle of the water discharge unit 20 is: in normal state, that is, in the non-drainage stage, the water volume in the fish pond 12 ensures that the float 17 can straighten the connecting rope 21, so that the trapezoidal water blocking plug 22 rises to the top of the trapezoidal water discharge port 23, blocking the trapezoidal water discharge port 23 and the water discharge hole 24. When the fish pond 12 enters the drainage stage (during the non-drainage stage, the fish pond 12 will be replenished with water in real time to maintain the liquid level; after entering the drainage stage, it will not be replenished with water), the liquid level of the water body 15 in the fish pond 12 drops. At this time, due to the drop in the water level of the water body 15, the float 17 drops accordingly, and the connecting rope 21 becomes relaxed, and then the trapezoidal water plug 22 will gradually fall to the bottom of the trapezoidal drain port 23, exposing the drain hole 24 (that is, the trapezoidal water plug 22 does not block the trapezoidal drain port 23 and the drain hole 24 at this time); then the water body 15 in the fish pond 12 enters the heat exchange pipe 7 from the bottom of the trapezoidal drain port 23 through the drain hole 24, and is discharged from the one-way seepage hole 11 on the heating pipe 8 and the heat storage pipe 9.

[0066] Furthermore, anti-backflow bristles 24 are provided on the outside of the one-way water seepage holes 11. During the non-draining phase, the anti-backflow bristles 24 are moved inward to prevent soil from entering the pipes. During drainage, water 15 is discharged through the one-way water seepage holes 11, flushing the anti-backflow bristles 24. As an example, two heating pipes 8 and one heat storage pipe 9 are each provided with one-way water seepage holes 11 at their lowest points, with anti-backflow bristles 24 arranged below the one-way water seepage holes 11.

[0067] In this solution, the water discharge unit 20 uses a heat exchange pipe to realize automatic water exchange in the fish pond. A one-way water seepage hole 11 is set at the bottom of the heat exchange pipe to ensure that the water seeps into the soil while the soil does not enter the heat exchange pipe 7, which can reduce the waste of resources and labor costs caused by using mechanical devices to change water.

[0068] The above is a further detailed description of the present invention in conjunction with specific embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A heat storage and supply system for fishery facilities based on concentrated solar energy, wherein the fishery facilities include multiple fish ponds arranged in the same area; the characteristics are: The heat storage and supply system includes: a solar concentrating heat collection unit and a heat exchange pipe; The solar concentrating and heat collecting unit is used to collect and concentrate sunlight to heat the air flowing through it as a circulating medium; The heat exchange pipeline includes: a heat supply pipeline and a heat storage pipeline, the heat supply pipeline is arranged in the soil at the bottom of the fish pond and contacts the bottom of the fish pond; the heat storage pipeline is located in the soil below the heat supply pipeline; One end of the circulating gas output pipeline equipped with a fan is connected to the solar concentrating heat collection unit, and the other end has two interfaces for connecting to the heating pipeline and the heat storage pipeline respectively; the connection between the heating pipeline and the circulating gas output pipeline or the connection between the heat storage pipeline and the circulating gas output pipeline is achieved by switching the switching valves provided at the two interfaces; The heating pipe and the heat storage pipe pass through the soil under all the fish ponds in sequence and then communicate with the other end of the solar concentrating heat collecting unit through the circulating gas input pipe; The fish pond is provided with a water discharge unit connected to the heat exchange pipe; the heating pipe and the heat storage pipe are both provided with one-way water seepage holes; after the water discharge unit is opened, the water in the fish pond is discharged through the one-way water seepage holes.

2. The fishery facility heat storage and supply system based on solar concentration according to claim 1, characterized in that: Anti-backflow bristles are arranged below the one-way water seepage hole.

3. The fishery facility heat storage and supply system based on solar concentration according to claim 1 or 2, characterized in that: The water discharge unit comprises: a float, a trapezoidal water blocking plug and a trapezoidal water discharge port; The water discharge unit is sunken into the heating pipe; a water discharge hole communicating with the trapezoidal water discharge port is provided at a position corresponding to the water discharge unit on the bottom surface of the fish pond; The float used to display the water level in the fish pond is connected to a trapezoidal water blocking plug through a connecting rope. The trapezoidal water blocking plug is located inside the trapezoidal drain outlet. When the float straightens the connecting rope, the trapezoidal water blocking plug is located at the top of the trapezoidal drain outlet, blocking the drain hole; when the water level in the fish pond drops and the connecting rope is loosened, the trapezoidal water blocking plug falls to the bottom of the trapezoidal drain outlet, exposing the drain hole.

4. The fishery facility heat storage and supply system based on solar concentration according to claim 1 or 2, characterized in that: The switching valve is a flexible one-way valve with a counterweight. The switching valve is arranged at the connection point between the heating pipe and the circulating gas output pipe. One side of the switching valve is connected to the lower end of the heating pipe at the interface, and the rest of the valve is in a free state. The diameter of the heat supply pipe is smaller than the diameter of the heat storage pipe; Under normal conditions, the switching valve is in a horizontal state under the action of the counterweight, blocking the passage between the circulating gas output pipeline and the heat storage pipeline; at this time, the fan rotates forward, and the high-temperature air provided by the solar concentrating and collecting unit enters the heating pipeline; when the fan rotates in the reverse direction and increases the flow rate, the switching valve is pushed upward by the gas in the heat storage pipeline, closing the heating pipeline, and the heat storage pipeline is connected to the circulating gas output pipeline.

5. The fishery facility heat storage and supply system based on solar concentration according to claim 1 or 2, characterized in that: The fish pond is half embedded in the soil.

6. The fishery facility heat storage and supply system based on solar concentration according to claim 1 or 2, characterized in that: The fishery facility has a wall on the north side and a transparent film on the south side; the solar concentrating and heat collecting unit is located outside the transparent film on the south side of the fishery facility; The outer surface of the fish pond facing the sun has a reflective layer A; The inner surface of the enclosure wall is provided with a light-reflecting layer B; the side of the fish pond opposite to the enclosure wall is provided with a light-absorbing layer.

7. The fishery facility heat storage and supply system based on solar concentration according to claim 6, characterized in that: The gap between two adjacent fish ponds is filled with heat storage material.

8. The fishery facility heat storage and supply system based on solar concentration according to claim 1 or 2, characterized in that: A heat-insulating layer is provided on the outside of the fish pond.

9. The fishery facility heat storage and supply system based on solar concentration according to claim 1 or 2, characterized in that: The solar energy concentrating and heat collecting unit is composed of a plurality of trough-type composite multi-curved surface concentrating and heat collecting devices connected in series or / and in parallel.

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