System for increasing discharge temperature of reservoir

Abstract

The invention discloses a system for increasing the discharge temperature of a reservoir, which comprises a compressor, a turbine expansion unit and a generator which are positioned on the bank of the reservoir, and a heat exchanger, a heat storage tank, gas storage equipment, a first valve and warming equipment which are arranged at the bottom of the water area of the reservoir, the compressor communicates with a compression side inlet of the heat exchanger so as to convey compressed high-temperature and high-pressure air into the heat exchanger, the heat exchanger is arranged on the heat storage tank, the high-temperature and high-pressure air in the heat exchanger exchanges heat with a heat exchange medium in the heat storage tank, a compression side outlet of the heat exchanger communicates with the air storage device, and the air storage device communicates with an inlet of the first valve. A first outlet of the first valve communicates with an expansion side inlet of the heat exchanger, an expansion side outlet of the heat exchanger communicates with an inlet of the turbine expansion unit, and the turbine expansion unit is connected with the generator. A medium outlet of the heat storage tank is communicated with a medium inlet of the warming equipment, and a medium inlet of the heat storage tank is communicated with a medium outlet of the warming equipment; the warming device is located on the upstream of a drain opening of the reservoir.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of reservoir auxiliary facilities design and environmental protection technology, and particularly relates to a system for improving water temperature of a reservoir. BACKGROUND

[0002] The construction of water conservancy and hydropower projects can cause changes in the ecological environment of rivers, and the more obvious changes are: once the river is dammed and formed into a reservoir in the construction of water conservancy and hydropower projects, the original spawning grounds, foraging grounds and overwintering grounds of fish will be submerged, and the migration behavior of fish upstream and downstream of the dam is hindered, thereby negatively affecting the amount and diversity of fish resources, and ultimately seriously threatening the reproductive capacity and survival status of fish.

[0003] At the same time, after the river is dammed and formed into a reservoir, the water in the reservoir presents a vertical water temperature stratification phenomenon, which also has adverse effects on the downstream, specifically: the upper layer of the reservoir has a higher water temperature than the lower layer, and the water temperature at the bottom of the reservoir is the lowest, thereby causing the water temperature of the reservoir discharge (since the water conservancy and hydropower project takes water from the bottom of the reservoir, the water discharged by the reservoir is the lower layer of water in the reservoir) to be lower than the water temperature of the natural river, thereby affecting downstream agricultural production, fish resources (for example, causing the fish spawning period in the downstream to be postponed and the breeding scale to decrease) and aquatic ecological environment. SUMMARY

[0004] The embodiments of the present application disclose a system for improving water temperature of a reservoir to solve the adverse effects caused by the water temperature stratification in the reservoir after the river is dammed and formed into a reservoir. In order to solve the above technical problems, the present application provides the following technical solutions: A system for improving water temperature of a reservoir, comprising a compressor, a turbine expansion unit and a generator located on the shore of the reservoir, and a heat exchanger, a heat storage tank, a gas storage device, a first valve and a temperature increasing device located at the bottom of the water area of the reservoir, wherein: The compressor is in communication with the compression side inlet of the heat exchanger to deliver the compressed high-temperature and high-pressure air into the heat exchanger, the heat exchanger is arranged on the heat storage tank, and the high-temperature and high-pressure air in the heat exchanger exchanges heat with the heat exchange medium in the heat storage tank to form normal-temperature and high-pressure air, the compression side outlet of the heat exchanger is in communication with the gas storage device, the gas storage device is in communication with the inlet of the first valve, the first outlet of the first valve is in communication with the expansion side inlet of the heat exchanger, the expansion side outlet of the heat exchanger is in communication with the inlet of the turbine expansion unit, and the turbine expansion unit is connected with the generator; the medium outlet of the heat storage tank is in communication with the medium inlet of the temperature increasing device, and the medium inlet of the heat storage tank is in communication with the medium outlet of the temperature increasing device; the temperature increasing device is located at the bottom of the water area and upstream of the discharge port of the reservoir.

[0005] Optionally, in the above-mentioned system for increasing the temperature of the reservoir discharge water, the system further includes an aeration device and a second valve. The aeration device is located at the bottom of the water area of ​​the reservoir. The second outlet of the first valve is connected to the inlet of the second valve. The first outlet of the second valve is connected to the aeration device to enable the aeration device to perform underwater aeration. The aeration device is located at the bottom of the water area and upstream of the discharge outlet of the reservoir.

[0006] Optionally, in the above-mentioned system for increasing the temperature of water discharged from the reservoir, the aeration equipment includes aeration chambers and multiple aeration plates, all located at the bottom of the water area. The air inlet of the aeration chamber is connected to the first outlet of the second valve. The multiple aeration plates are rotatably located at the air outlet of the aeration chamber. Each of the multiple aeration plates has aeration holes, and the diameters of the aeration holes on the multiple aeration plates are not all equal.

[0007] Optionally, in the above-mentioned system for raising the temperature of reservoir discharge, the system further includes a first connecting pipe and a propagation device. The first port of the first connecting pipe is connected to the second outlet of the first valve, and the second port of the first connecting pipe is connected to the inlet of the second valve. The first connecting pipe includes a first heat exchange section located between the first port and the second port of the first connecting pipe. The propagation device is located on the bank of the reservoir. The propagation device includes a first heat exchange pool, and at least a portion of the first heat exchange section is located in the first heat exchange pool and is used to absorb the heat of the heat exchange medium in the first heat exchange pool to heat the ambient temperature high-pressure air it transports.

[0008] Optionally, in the above-mentioned system for increasing the temperature of reservoir discharge, the aquaculture device further includes a functional fish pond, a water purification pond, a wastewater pond, and a second heat exchange section; wherein: The outlet of the purified water tank is connected to the inlet of the functional fish pond, and the outlet of the functional fish pond is connected to the sewage tank. The sewage tank is located between the purified water tank and the first heat exchange tank. A tilting frame is installed in the sewage tank to tilt and transport the frozen ice in the sewage tank to the purified water tank. The second heat exchange section is connected to the heat exchange medium in the first heat exchange tank and is located in the sewage tank. The second heat exchange section is an electrically refrigerated structural component and is used to realize the heat exchange between the heat exchange medium in the first heat exchange tank and the sewage in the sewage tank to make the sewage freeze and to heat the heat exchange medium in the first heat exchange tank. The first heat exchange section exchanges heat with the heat exchange medium in the first heat exchange tank to heat the ambient temperature high-pressure air it transports.

[0009] Optionally, in the above-mentioned system for increasing the discharge temperature of the reservoir, the first heat exchange section is an electrically refrigerated structural component. The first heat exchange section is used to realize heat exchange between the heat exchange medium in the first heat exchange pool and the ambient temperature high-pressure air in the first heat exchange section to heat the ambient temperature high-pressure air and reduce the temperature of the heat exchange medium in the first heat exchange pool.

[0010] Optionally, in the above-mentioned system for raising the temperature of water discharged from the reservoir, the system further includes a second connecting pipe, the inlet of which is connected to the second outlet of the second valve, and the outlet of which extends into a traffic tunnel near the reservoir.

[0011] Optionally, in the above-mentioned system for increasing the temperature of water discharged from the reservoir, there are multiple gas storage devices, and the system for increasing the temperature of water discharged from the reservoir also includes a third valve. The inlet of the third valve is connected to the outlet of the compression side, and the outlet of the third valve is multiple and is connected to multiple gas storage devices in a one-to-one correspondence.

[0012] Optionally, in the above-mentioned system for increasing the temperature of water discharged from the reservoir, the heating device is equipped with a discharge valve, and when the discharge valve is in the open state, the heat exchange medium in the heating device can be released.

[0013] Optionally, in the above-mentioned system for increasing the temperature of the reservoir discharge water, the system further includes a third connecting pipe, the inlet of which is connected to the outlet of the turbine expansion unit, and the outlet of which is connected to the discharge channel of the reservoir.

[0014] The system for increasing the temperature of water discharged from a reservoir disclosed in this invention has the following technical effects: The system for raising the temperature of water discharged from a reservoir disclosed in this invention uses a compressor to compress high-temperature, high-pressure air, which is then transported to a heat exchanger. This air exchanges heat with the heat exchange medium in the storage tank, raising its temperature. The resulting room-temperature, high-pressure air then passes through a storage device and a first valve before re-entering the heat exchanger to be heated to a slightly higher temperature, higher pressure. This increased temperature allows the air to flow into a heating device and exchange heat with the cooler water at the bottom of the reservoir, ultimately raising the temperature of the water discharged from the reservoir. Simultaneously, the slightly higher temperature, higher pressure air discharged from the expansion side of the heat exchanger drives a generator to generate electricity via a turbine expansion unit, effectively utilizing the energy of the air and improving energy efficiency. Attached Figure Description

[0015] Figures 1-2These are schematic diagrams of the system for increasing the discharge temperature of a reservoir, as disclosed in an embodiment of the present invention, from different perspectives. Figures 3-6 These are schematic diagrams of different parts of the system for increasing the discharge temperature of a reservoir, as disclosed in the embodiments of the present invention.

[0016] Explanation of reference numerals in the attached figures: 10-Compressor, 20-Turbine expansion unit, 30-Generator, 40-Heat exchanger, 50-Heat storage tank, 60-Gas storage equipment, 71-First valve, 72-Second valve, 73-First connecting pipe, 731-First heat exchange section, 74-Second connecting pipe, 75-Third valve, 76-Third connecting pipe, 80-Heating equipment, 90-Electric motor, 100-Aeration equipment, 101-Aeration chamber, 102-Aeration plate, 110-Propagation device, 111-First heat exchange pool, 112-Functional fish pond, 113-Clean water pool, 114-Sewage pool, 115-Second heat exchange section. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0018] The technical solutions disclosed in the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0019] In a real-world scenario, a hydroelectric power station's dam is located on an S-shaped bend in a river within an asymmetrical U-shaped valley, thus impounding water to form a reservoir. The highest point of the dam is 300 meters, and the diversion flow rate is 1200 cubic meters per second. 3The hydropower station has an installed capacity of 3600MW and a reservoir layout consisting of a concrete arch dam combined with an underground powerhouse. In this real-world scenario, the reservoir experiences severe low-temperature water discharge. At the highest point of the dam (300m), there is a clear temperature stratification, especially during June-September when the discharged water is at least 3°C ​​colder than the water in the natural river channel. This can negatively impact the reproduction of downstream fish, particularly drifting egg-laying species. Furthermore, this hydropower station may also need to regulate the operation of surrounding wind and solar power plants, presenting significant operational challenges. Using conventional sluice gates to mitigate the low-temperature water discharge would result in the loss of potential energy from the water used for power generation, reducing power generation efficiency and hindering the hydropower project's ability to regulate electricity. Moreover, some hydropower stations lack the infrastructure for constructing retaining walls or impermeable walls, making it difficult to raise the discharge temperature using conventional methods. Additionally, the investment costs for facilities such as sluice gates, retaining walls, and impermeable walls are substantial.

[0020] Meanwhile, this hydropower station may need to undertake fish propagation tasks for multiple surrounding hydropower stations, propagating up to 15 species of fish, mostly cold-water fish. Therefore, the relevant technologies have additionally set up multiple cooling ponds to provide low-temperature water sources, resulting in a large footprint for the hydropower station's auxiliary facilities. At the same time, some hydropower stations have a problem with a large daily wastewater production from their propagation devices. Since some hydropower stations are located in areas meeting Class II water quality standards and are prohibited from discharging wastewater, wastewater treatment is difficult. Furthermore, using conventional technologies such as adsorption, membrane treatment, electrodialysis, and advanced oxidation to treat wastewater still presents challenges due to high costs. How to address the adverse effects of low-temperature water discharge, how to reduce the difficulty of fish propagation setup, how to improve wastewater treatment efficiency, and how to reduce wastewater treatment costs are urgent technical problems that engineers in related fields need to solve.

[0021] Based on this, embodiments of the present invention disclose a system for increasing the temperature of reservoir discharge water to at least solve at least one of the problems described above. Please refer to [reference needed]. Figures 1-6 The disclosed system for raising the temperature of water discharged from the reservoir may include a compressor 10, a turbine expansion unit 20, a generator 30, a heat exchanger 40, a heat storage tank 50, a gas storage device 60, a first valve 71, and a heating device 80.

[0022] The compressor 10, turbine expansion unit 20, and generator 30 are all located on the bank of the reservoir, for example, on a hillside. Specifically, to avoid the impact of water level changes in the reservoir on the operation of the compressor 10, turbine expansion unit 20, and generator 30, in one embodiment, the compressor 10, turbine expansion unit 20, and generator 30 can be fixed on the top of the hillside on the bank of the reservoir. The heat exchanger 40, heat storage tank 50, gas storage device 60, first valve 71, and heating device 80 are all located at the bottom of the reservoir; in other words, the heat exchanger 40, heat storage tank 50, gas storage device 60, first valve 71, and heating device 80 are located at the bottom of the reservoir below the water surface.

[0023] Compressor 10 is used to compress and transport air. During this process, compressor 10 consumes electricity, converting electrical energy into the internal energy and potential energy of the air, thus transforming the air in the environment into high-temperature, high-pressure air after passing through compressor 10. In this embodiment of the invention, compressor 10 can be a centrifugal compressor or an axial-flow compressor; this embodiment does not limit the specific type of compressor 10. Specifically, the system for raising the discharge temperature of a reservoir disclosed in this application may also include an electric motor 90, which is also located on the bank, or even on the hillside. The electric motor 90 is connected to compressor 10, and after being powered on and started, it drives compressor 10 to work, thereby achieving air compression. Specifically, electric motor 90 can be connected to at least one of a photovoltaic power station, a wind power station, or grid power on or near the reservoir bank, thereby obtaining power from at least one of these sources. For example, photovoltaic power stations and wind power stations can be the primary power source, with grid power as a supplement.

[0024] Heat exchanger 40 functions to exchange heat with heat storage tank 50. In this embodiment of the invention, heat exchanger 40 can be a tubular heat exchanger, having a compression-side inlet, a compression-side outlet, an expansion-side inlet, and an expansion-side outlet. The compression-side inlet and outlet are connected, as are the expansion-side inlet and outlet. A first heat exchange structure connects the compression-side inlet and outlet, and a second heat exchange structure connects the expansion-side inlet and outlet. The first heat exchange structure exchanges heat with heat storage tank 50 to increase the temperature of the heat exchange medium in heat storage tank 50, and the second heat exchange structure exchanges heat with heat storage tank 50 to increase the temperature of the air flowing in the second heat exchange structure (such as ambient temperature high-pressure air as described later). In this embodiment of the invention, the specific structure and heat exchange principle of heat exchanger 40 are well-known technologies and will not be described in detail here.

[0025] The heat storage tank 50 contains a heat exchange medium (e.g., water). The temperature increase of the heat exchange medium within the heat storage tank 50 enables the tank to heat at least the cooler water at the bottom of the water body (i.e., the lower layer of water in the reservoir as described in the background art). In this embodiment, the heat storage tank 50 can be a stainless steel insulated heat storage tank (e.g., a stainless steel insulated heat storage tank), thus preventing direct heat exchange between the tank and the water at the bottom of the water body (though minimal heat exchange is not considered). The increased temperature of the heat exchange medium within the heat storage tank 50 can achieve the purpose of raising the temperature of the water at the bottom of the water body by at least exchanging heat with the water at the bottom of the water body through the heating device 80 and the aeration device 100 described later.

[0026] In this embodiment of the invention, the compressor 10 draws in air through its inlet, and its outlet is connected to the compression-side inlet of the heat exchanger 40, so as to deliver the high-temperature, high-pressure air compressed by the compressor 10 to the heat exchanger 40 (i.e., into the compression side of the heat exchanger 40), thereby preparing for subsequent heat exchange operations in the heat exchanger 40. Since the heat exchanger 40 is located at the bottom of the reservoir, while the compressor 10 is located on the shore of the reservoir, to facilitate connection between the two, the outlet of the compressor 10 and the compression-side inlet of the heat exchanger 40 can be connected by a pressure-bearing, heat-insulating steel pipe to mitigate heat loss of the high-temperature, high-pressure air during transmission.

[0027] Heat exchanger 40 is mounted on heat storage tank 50, allowing high-temperature, high-pressure air in heat exchanger 40 to exchange heat with the heat exchange medium (e.g., water) in heat storage tank 50. After heat exchange, the high-temperature, high-pressure air cools down, becoming ambient-temperature, high-pressure air. During the heat exchange process, the heat exchange medium is heated by the high-temperature, high-pressure air. It should be noted that heat exchanger 40 is also designed to be insulated from the water in the heat storage tank. The heat exchange portion of heat exchanger 40 cooperates with the heat exchange portion of heat storage tank 50 to achieve heat exchange between them. For example, the thermal resistance coefficient of the heat exchange portion of heat exchanger 40 and the heat exchange portion in heat storage tank 50 is relatively small (i.e., smaller than the thermal resistance coefficient of the insulation region on heat exchanger 40 and heat storage tank 50), thus enabling the heat exchange portion between the compression-side inlet and compression-side outlet to cooperate with the corresponding heat exchange portion on heat storage tank 50 to achieve the purpose of heat exchange.

[0028] The compression-side outlet of heat exchanger 40 is connected to the gas storage device 60. The high-temperature, high-pressure air in heat exchanger 40 exchanges heat with the heat exchange medium in heat storage tank 50 to form ambient-temperature, high-pressure air, which then enters the gas storage device 60 for temporary storage. Similarly, in an optional embodiment, the compression-side outlet of heat exchanger 40 and the gas storage device 60 can be connected via a pressure-bearing, insulated steel pipe. In this embodiment, the gas storage device 60 can be located below the dead storage water level, making it less likely to be exposed above the water surface and thus preventing external damage.

[0029] Since the gas storage device 60 functions as a temporary storage unit for ambient temperature high-pressure air, it does not require heat exchange with the water in the water body. Therefore, the gas storage device 60 can also be an insulated gas storage container to reduce heat loss from the ambient temperature high-pressure air. It should be explained that the purpose of the system for raising the discharge temperature of a reservoir disclosed in this embodiment of the invention includes raising the discharge temperature of the reservoir, but raising the discharge temperature does not rely on heat exchanger 40, gas storage device 60, heat storage tank 50, or heat exchange between some connecting pipes in the water body and the water at the bottom of the water body. To achieve other objectives of the invention, some components (excluding the heating device 80 described later) need to be designed as insulated structures, meaning that the heat exchange between these components and the water in the water body is relatively small.

[0030] The gas storage device 60 is connected to the inlet of the first valve 71. The first outlet of the first valve 71 is connected to the expansion side inlet of the heat exchanger 40, and the expansion side outlet of the heat exchanger 40 is connected to the inlet of the turbine expansion unit 20. The turbine expansion unit 20 is connected to the generator 30. The ambient temperature high-pressure air in the gas storage device 60 enters the heat exchanger 40 again after passing through the first valve 71 (specifically, it enters the expansion side of the heat exchanger 40) and is heated again to form sub-high temperature high-pressure air. This sub-high temperature high-pressure air enters the turbine expansion unit 20 and drives the turbine expansion unit 20 to operate, thereby driving the generator 30 to generate electricity. In this embodiment, the first valve 71 may only have a first outlet. The electrical energy generated by the generator 30 can be connected to the power supply of electrical devices in the storage area, or it can be connected to the grid for power generation.

[0031] It can be seen that the heat storage tank 50 is designed with an insulated structure, which enables the heat exchange medium heated by the heat exchanger 40 to have a high temperature, thereby heating the ambient temperature high pressure air that subsequently enters the expansion side of the heat exchanger 40, so that the sub-high temperature high pressure air formed after the ambient temperature high pressure air is heated has enough energy to drive the turbine expansion unit 20 to operate.

[0032] The heat storage tank 50 contains a heat exchange medium, and its medium inlet is connected to the medium outlet of the heating device 80. The heating device 80 and the heat storage tank 50 share the same heat exchange medium. The heating device 80 is located at the bottom of the water body and upstream of the reservoir's outlet. Since the heat exchanger 40 is mounted on the heat storage tank 50, it can raise the temperature of the heat exchange medium in the tank 50 through heat exchange. The heat storage tank 50 and the heat exchanger 40 form a heat exchange medium circulation structure, allowing the heat exchange medium to circulate. After the heat exchange medium in the heat storage tank 50 is heated by heat exchange with the heat exchanger 40, it flows into the heating device 80, where it exchanges heat with the water at the bottom of the water body, thereby raising the temperature of the water in the reservoir. As mentioned above, since the heating device 80 is located at the bottom of the reservoir, it can exchange heat with the cooler water at the bottom of the reservoir, thereby raising the temperature of the water in the cooler bottom area of ​​the reservoir. This will raise the discharge temperature of the reservoir after the water at the bottom of the reservoir is discharged.

[0033] After the heat exchange medium in the heating device 80 cools down, it flows back to the heat storage tank 50 and reheats by exchanging heat with the heat exchanger 40. To achieve the circulation of the heat exchange medium, a first drive pump can be installed in the heat exchange medium circulation path formed by the heating device 80 and the heat storage tank 50 to drive the heat exchange medium to circulate in the heat exchange medium circulation structure formed by the heating device 80 and the heat storage tank 50. The first drive pump can control the circulation speed of the heat exchange medium in the heat storage tank 50, so that the heat exchange medium heated by the heat exchanger 40 in the heat storage tank 50 can heat the water at the bottom of the water area through the heating device 80, while also retaining energy to heat the room temperature high-pressure air entering the expansion side of the heat exchanger 40. Of course, the circulation flow rate of the heat exchange medium between the heat storage tank 50 and the heating device 80 can also be controlled by designing the diameter of the circulating flow pipeline of the heat exchange medium circulation structure, so as to avoid the temperature of the heat exchange medium in the heat storage tank 50 dropping too quickly and making it difficult to heat the normal temperature high pressure air entering the expansion side of the heat exchanger 40.

[0034] It should be noted that after the heat exchange medium in the heat storage tank 50 is heated by the heat exchanger 40, part of the heat can be used to heat the water at the bottom of the water body through the heating device 80, and another part of the heat is used to heat the ambient temperature high pressure air flowing out from the gas storage device 60 to a certain extent, thereby raising the temperature of this ambient temperature high pressure air to become secondary high temperature high pressure air, thus preparing for the subsequent work done by the turbine expansion unit 20.

[0035] The heating device 80 is located upstream of the reservoir's spillway and at the bottom of the reservoir's water area. Therefore, after exchanging heat with the water at the bottom of the reservoir, the heating device 80 raises the temperature of that water, thereby increasing the discharge temperature of the spillway. As described in the background section, the water in the reservoir exhibits vertical temperature stratification. Therefore, raising the temperature of the water at the bottom of the water area helps to raise the overall temperature of the water in the reservoir. This water discharges through the reservoir's spillway, thus increasing the reservoir's discharge temperature.

[0036] The system for raising the temperature of water discharged from a reservoir disclosed in this invention uses a compressor 10 to compress high-temperature, high-pressure air, which is then introduced into a heat exchanger 40. This high-temperature, high-pressure air exchanges heat with the heat exchange medium in the heat storage tank 50, raising the temperature of the heat exchange medium. The resulting room-temperature, high-pressure air then passes through a gas storage device 60 and a first valve 71 before re-entering the heat exchanger 40 to be heated into sub-high-temperature, high-pressure air. This increased temperature of the heat exchange medium allows it to flow into a heating device 80 and exchange heat with the cooler water at the bottom of the reservoir, ultimately raising the temperature of the water discharged from the reservoir. Simultaneously, the sub-high-temperature, high-pressure air discharged from the expansion side outlet of the heat exchanger 40 drives a generator 30 to generate electricity via a turbine expansion unit 20, effectively utilizing the energy of the air and improving energy efficiency.

[0037] This structure can achieve the purpose of increasing the discharge temperature of the reservoir without the need to build stacked beam gates, retaining walls or water-proof curtain walls, and it also avoids the need for more complex, costly and time-consuming structures.

[0038] As described above, the heating device 80 can achieve a one-time temperature increase of the water at the bottom of the reservoir. To better achieve the temperature increase, in a further embodiment, the system for increasing the reservoir discharge temperature disclosed in this invention may further include an aeration device 100 and a second valve 72. The aeration device 100 is located at the bottom of the reservoir and upstream of the reservoir's discharge outlet. The second outlet of the first valve 71 is connected to the inlet of the second valve 72. In this embodiment, the first valve 71 may have a first outlet and a second outlet. The first outlet of the first valve 71 is connected to the expansion side inlet of the heat exchanger 40, allowing a portion of the ambient temperature high-pressure air released from the air storage device 60 to enter the heat exchanger 40, be heated by the heat storage tank 50, and ultimately enter the turbine expansion unit 20. The second outlet of the first valve 71 is connected to the air inlet of the aeration device 100 via the second valve 72, allowing another portion of the ambient temperature high-pressure air from the air storage device 60 to enter the aeration device 100 for underwater aeration.

[0039] It should be noted that the aeration device 100 is also located upstream of the reservoir's discharge outlet. In the specific operation process, one path (i.e., a portion) of the normal temperature high-pressure air flowing through the first valve 71 will enter the expansion side inlet of the heat exchanger 40 and re-enter the heat exchanger 40, and then enter the turbine expansion unit 20 after passing through the heat exchanger 40. The other path will enter the aeration device 100. Because the ambient temperature high-pressure air flowing from the gas storage device 60 into the heat exchanger 40 is heated by the heat exchange medium in the heat storage tank 50 to become sub-high temperature high-pressure air, this sub-high temperature high-pressure air will perform work through the turbine expansion unit 20 to drive the generator 30 to generate electricity. Another portion of the ambient temperature high-pressure air flowing out of the gas storage device 60 has a large pressure and will enter the aeration device 100 and finally be sprayed out at the bottom of the water body through the aeration device 100, thereby entering the water at the bottom of the water body and heating the water at the bottom of the water body. At the same time, aeration at the bottom of the water body can break the vertical stratification of the water in the water body, thereby mixing the water in different layers and increasing the temperature of the lower layer of water. Ultimately, this further achieves the purpose of alleviating the vertical water temperature stratification phenomenon and increasing the discharge temperature. This embodiment can heat the water at the bottom of the water body again on the basis of heating the water at the bottom of the water body by the heating device 80, thereby further increasing the discharge temperature of the reservoir.

[0040] In this embodiment of the invention, the aeration principle of the aeration device 100 is a known technology, and this embodiment does not limit the specific structure of the aeration device 100. In one embodiment, the aeration device 100 may include an aeration chamber 101 and an aeration plate 102. The air inlet of the aeration chamber 101 is connected to the first outlet of the second valve 72. The aeration chamber 101 is provided with an air outlet, and the aeration plate 102 is rotatably disposed at the air outlet of the aeration chamber 101. The aeration plate 102 has a plurality of aeration holes distributed in a preset manner. The room temperature high-pressure air discharged from the air outlet of the aeration chamber 101 passes through the aeration plate 102 and is broken into fragmented bubbles by the action of the plurality of aeration holes on the aeration plate 102, which then enter the water at the bottom of the water body, thereby achieving more sufficient heat exchange and also more sufficient breaking up of water stratification. Therefore, after the heating device 80 heats the water at the bottom of the water area for the first time, the aeration device 100 can heat the water at the bottom of the water area even more fully. At the same time, this structure can better improve the temperature of the water at the bottom of the reservoir, so that the temperature of the reservoir discharge water can be further improved.

[0041] The number of aeration plates 102 can be one or more; the specific number of aeration plates 102 is not limited in this embodiment of the invention. In embodiments with multiple aeration plates 102, all aeration plates 102 are rotatably mounted on the aeration chamber 101, forming a rotating structure similar to "pages." This allows for multi-stage segmentation and dispersion of the air discharged from the air outlet of the aeration chamber 101, enabling the aeration device 100 to generate more fragmented bubbles. This is beneficial for improving the effect of reheating the bottom water of the water body and breaking up water stratification. To improve the aeration effect, the apertures of the aeration holes of the multiple aeration plates 102 are all different. Among the multiple aeration plates 102, the aeration plate 102 with the smallest aperture is located at the top, and the multiple aeration plates 102 are distributed from top to bottom in a manner that gradually increases the aperture of the aeration holes. The aeration plate 102 is rotatably mounted on the aeration chamber 101, so that the aeration plate 102 can swing under the impact of normal temperature and high pressure air during the aeration process, thereby improving the swing effect, which is beneficial to stirring the water at the bottom of the water body, accelerating heat exchange and breaking up stratification.

[0042] Of course, the aeration plates 102 can also swing under the drive of a power source. Therefore, in one embodiment, each aeration plate 102 is connected to an aeration plate driving mechanism. The aeration plate driving mechanism can be fixed to the aeration chamber 101 and driven by the corresponding aeration plate 102, thereby driving the rotation of the corresponding aeration plate 102 during aeration. Each aeration plate 102 can rotate within a preset angle range, which can be 90°. This embodiment of the invention does not limit the size of the preset angle range.

[0043] The system for raising the discharge temperature of a reservoir disclosed in this embodiment of the invention may further include a first connecting pipe 73 and a propagation device 110. The first port of the first connecting pipe 73 is connected to the second outlet of the first valve 71, and the second port of the first connecting pipe 73 is connected to the inlet of the second valve 72. The first connecting pipe 73 includes a first heat exchange section 731, which is located between the first port and the second port of the first connecting pipe 73. To improve heat exchange efficiency, the first heat exchange section 731 may be a serpentine pipe section.

[0044] The propagation device 110 is installed on the bank of the reservoir to promote fish growth, thereby supplementing fish resources and alleviating the problem of fish migration and reproduction being affected by damming and reservoir construction. In this embodiment of the invention, the propagation device 110 includes a first heat exchange pool 111, with at least a portion of a first heat exchange section 731 disposed in the first heat exchange pool 111 and used to absorb heat from the heat exchange medium in the first heat exchange pool 111 to heat the ambient temperature high-pressure air it transports. In this structure, the ambient temperature high-pressure air transported by the first connecting pipe 73 is heated after exchanging heat with the heat exchange medium in the first heat exchange pool 111 through the first heat exchange section 731, thus enabling it to participate in subsequent aeration operations at a higher temperature, thereby further enhancing the heating of the water at the bottom of the water area during aeration. At the same time, the fish living in the reservoir and river are cold-water fish, so the temperature of the heat exchange medium inside the first heat exchange pool 111 will decrease after heat exchange, which is at least beneficial to the cold-water fish's need for low temperatures.

[0045] It should be explained that the second outlet of the first valve 71 can also connect directly to the inlet of the second valve 72 without passing through the first heat exchange tank 111, and then enter the aeration device 100 through the first outlet of the second valve 72 to finally achieve aeration. In this embodiment of the invention, the temperature of the ambient temperature high-pressure air is higher than the temperature of the water at the bottom of the water body, and it can also heat the water at the bottom of the water body. When the ambient temperature high-pressure air discharged from the second outlet of the first valve 71 exchanges heat with the first heat exchange tank 111 through the first connecting pipe 73 and the first heat exchange section 731, the ambient temperature high-pressure air can be further heated before entering the aeration device 100 through the first outlet of the second valve 72 to finally achieve aeration. Since the temperature of the air aerated in the aeration device is higher in this embodiment, a better heating effect on the water at the bottom of the water body can be achieved.

[0046] In this embodiment of the invention, the temperature of high-temperature high-pressure air is higher than that of sub-high-temperature high-pressure air, the temperature of high-temperature high-pressure air is higher than that of normal-temperature high-pressure air, and the temperature of sub-high-temperature high-pressure air is higher than that of normal-temperature high-pressure air. This embodiment of the invention does not limit the specific temperature values ​​of high-temperature high-pressure air, sub-high-temperature high-pressure air, and normal-temperature high-pressure air. Notably, "normal-temperature high-pressure air" does not necessarily mean that its temperature is at room temperature in the region it is located in; it is merely a conceptual designation.

[0047] The propagation device 110 according to this embodiment of the invention may further include a functional fish pond 112, a water purification pond 113, a wastewater pond 114, and a second heat exchange section 115. The functional fish pond 112 is used for fish storage, reproduction, and other functions. The functional fish pond 112 may include a broodstock pond, a release pond, a breeding pond, a sorting pond, etc. This embodiment of the invention does not limit the specific type and quantity of the functional fish pond 112. The sorting pond is used to temporarily store fish when they are transported to the propagation device 110 for operators to sort suitable broodstock for propagation. The broodstock pond is for temporary storage of broodstock, the breeding pond is for breeding broodstock, and the release pond is for temporary storage of fish in the propagation device 110 before final release.

[0048] The outlet of the water purification tank 113 is connected to the inlet of the functional fish pond 112. The outlet of the functional fish pond 112 is connected to the sewage pond 114. The water purification tank 113 is used to input purified water into the functional fish pond 112, and the sewage generated in the functional fish pond 112 is transported to the sewage pond 114. When the functional fish pond 112 includes a broodstock pond, a breeding pond, a release pond, and a sorting pond, it is equivalent to connecting the broodstock pond, the breeding pond, the release pond, and the sorting pond in parallel between the water purification tank 113 and the sewage pond 114. This allows the water purification tank 113 to provide purified water to each of them, while the sewage generated by each of them is collected in the sewage pond 114. Ultimately, this achieves the input of purified water and the discharge of sewage, which is beneficial to the survival and temporary storage of fish in these ponds. Specifically, corresponding connecting pipelines and pumps can be configured on these pipelines to drive the input of purified water and the discharge of wastewater. This embodiment of the invention does not limit the specific connection methods between the wastewater tank 114 and the broodstock tank, breeding tank, discharge tank, and sorting tank, nor does it limit the specific connection methods between the purified water tank 113 and the broodstock tank, breeding tank, discharge tank, and sorting tank. This structure enables the renewal of water in the broodstock tank, breeding tank, discharge tank, and sorting tank.

[0049] In this embodiment of the invention, a tilting frame is provided inside the sewage tank 114. The tilting frame is a porous sieve plate used to tilt the frozen ice blocks inside the sewage tank 114 into the purified water tank 113. The tilting frame can be connected to a tilting frame drive mechanism, which drives the tilting frame to tilt, thereby allowing the tilting frame to sink to the bottom of the sewage tank 114 and to tilt to the top of the purified water tank 113. Specifically, when the tilting frame tilts to the bottom of the sewage tank 114, the supporting surface of the tilting frame can face vertically upwards. When the tilting frame tilts to the top of the purified water tank 113, the supporting surface of the tilting frame can face vertically downwards. The tilting frame is used to transport the ice blocks formed in the sewage tank 114, as described below.

[0050] The second heat exchange section 115 is connected to the heat exchange medium in the first heat exchange pool 111. Located in the sewage pool 114, the second heat exchange section 115 is an electrically refrigerated component and is used to exchange heat between the heat exchange medium in the first heat exchange pool 111 and the sewage in the sewage pool 114, causing the sewage in the sewage pool 114 to freeze and to heat the heat exchange medium in the first heat exchange pool 111. The first heat exchange section 731 exchanges heat with the heat exchange medium in the first heat exchange pool 111 to heat the ambient temperature high-pressure air it transports, while simultaneously cooling the heat exchange medium in the first heat exchange pool 111. To improve heating capacity, the first heat exchange section 731 can also be an electrically refrigerated component. This structure can improve the heating efficiency of the ambient temperature high-pressure air and lower the temperature of the heat exchange medium in the first heat exchange pool 111. A lower temperature of the heat exchange medium in the first heat exchange pool 111 is more conducive to subsequent heat exchange with the sewage in the sewage pool 114, thereby improving the freezing efficiency of the sewage in the sewage pool 114.

[0051] As described above, both the first heat exchange section 731 and the second heat exchange section 115 are electro-refrigeration structural components. Specifically, the inner walls of the first heat exchange section 731 and the second heat exchange section 115 are the heating side of the electro-refrigeration structural components, and the outer walls of the first heat exchange section 731 and the second heat exchange section 115 are the cooling side of the electro-refrigeration structural components. In one embodiment, the first heat exchange section 731 and the second heat exchange section 115 can be a sandwich structure, each including an inner metal layer, a semiconductor layer, and an outer metal layer, wherein the inner and outer metal layers can be copper layers. The semiconductor layer utilizes the Peltier effect to achieve cooling on one side and heating on the other. To improve heat exchange capacity, the first heat exchange section 731 and the second heat exchange section 115 can be serpentine tube sections. The first heat exchange section 731 can be connected to an air pump to drive the flow of room temperature high-pressure air in the first connecting pipe 73. The second heat exchange section 115 can be connected to a heat exchange medium delivery pump to achieve efficient delivery of the heat exchange medium.

[0052] In the specific working process, since the second heat exchange section 115 is an electrically refrigerated structural component, and the inner side of the second heat exchange section 115 is the heating side and the outer side is the cooling side, after the second heat exchange section 115 is powered on, the temperature of the sewage in the sewage tank 114 will drop until it freezes. The insoluble pollutants in the sewage tank (such as fish excrement) are heavier and slowly sink to the bottom of the tank, while the water in the sewage will freeze into ice and float. At the same time, for the soluble pollutants in the sewage tank, due to the freezing and concentration effect, the pollutants will be discharged outside the ice crystals during the freezing process, and the pure water will freeze into ice and float. This process is essentially sewage treatment. The water that freezes into ice is relatively clean because it is separated from the pollutants. When the ice reaches the preset volume, the tilting frame drive mechanism can be controlled to drive the tilting frame to tilt and transport the ice to the top of the clean water tank 113, so that the ice falls into the clean water tank 113, thereby realizing the replenishment of water to the clean water tank 113.

[0053] Meanwhile, the heat exchange medium in the second heat exchange section 115 essentially absorbs energy (including energy released from the cooling of wastewater) and heats up. Since the second heat exchange section 115 is connected to the first heat exchange pool 111, the increase in temperature of the heat exchange medium in the second heat exchange section 115 is essentially an increase in the temperature of the heat exchange medium in the first heat exchange pool 111. This allows the medium to heat the ambient temperature high-pressure air in the first heat exchange section 731 through heat exchange. Of course, the ambient temperature high-pressure air is transported away after absorbing energy and heating up. At the same time, the temperature of the heat exchange medium in the first heat exchange pool 111 decreases and continues to flow into the second heat exchange section 115 to exchange heat with the wastewater in the wastewater pool 114, thereby continuously cooling the wastewater and causing the water in the wastewater to freeze, thus achieving wastewater treatment.

[0054] The frozen ice melts in the purification tank 113, forming cooler purified water, which is then transported to the functional fish pond 112. This cooler water is suitable for the breeding of cold-water fish. As can be seen from the above process, this structure can extract purified water from wastewater, allowing for the reuse of most of the water (since wastewater is primarily water). This reduces the daily water consumption of the breeding device 110 and eliminates the need for numerous cooling tanks as described in related technologies, thus reducing the footprint of the breeding device 110. Since purified water can be extracted from wastewater, it essentially achieves preliminary wastewater treatment, reducing the amount of wastewater generated. Even if wastewater needs to be discharged, only a small portion remaining after the purified water has been extracted is treated, reducing the difficulty of wastewater treatment.

[0055] Therefore, a sewage pipe can be installed at the bottom of the sewage tank 114. Except for the frozen sewage, which can be periodically discharged into transport vehicles through the sewage pipe, a small amount of sewage is eventually transported away. This method avoids the problem of high end-of-pipe treatment costs due to large sewage volumes.

[0056] Furthermore, this method eliminates the need for costly treatment methods such as adsorption, membrane treatment, electroosmosis, and advanced oxidation, thus reducing wastewater treatment costs. It is important to emphasize that the system for increasing reservoir discharge temperature disclosed in this embodiment of the invention can simultaneously increase the reservoir discharge temperature while also handling wastewater treatment by the aquaculture device 110 and providing low-temperature water, achieving a comprehensive and balanced effect.

[0057] The first heat exchange section 731 can also be a conventional piping section instead of an electrically refrigerated component. However, to further enhance the heating capacity of the ambient temperature high-pressure air transported in the first connecting pipe 73, the first heat exchange section 731 is an electrically refrigerated component. The first heat exchange section 731 is used to exchange heat between the heat exchange medium in the first heat exchange pool 111 and the ambient temperature high-pressure air within the first heat exchange section 731, thereby heating the ambient temperature high-pressure air and lowering the temperature of the heat exchange medium in the first heat exchange pool 111. This structure further increases the heat exchange capacity, resulting in better heating of the air and lower temperature of the heat exchange medium. This facilitates the cooling of the heat exchange medium as it enters the wastewater pool 114, thus aiding in wastewater treatment.

[0058] The heat exchange medium in the first heat exchange pool 111 can be water or other fluids, as it is located close to the lower-temperature sewage pool 114. To facilitate better flow of the heat exchange medium in the first heat exchange pool 111 along the second heat exchange section 115 and heat exchange with the sewage in the sewage pool 114, in one embodiment, the heat exchange medium in the first heat exchange pool 111 is a mixture of water and ethanol, with a water-to-ethanol volume ratio of 7:3. This type of heat exchange medium is less prone to cooling, thus ensuring good fluidity during the heat exchange process. In this embodiment, the heat exchange medium in the first heat exchange pool 111 can be reused repeatedly. To avoid external interference, the first heat exchange pool 111 can be a closed pool.

[0059] The system for increasing the discharge temperature of a reservoir disclosed in this embodiment of the invention may further include a second connecting pipe 74, the inlet of which can be connected to the second outlet of the second valve 72. The outlet of the second connecting pipe 74 can extend into a traffic tunnel near the reservoir, thereby improving the ventilation effect of the traffic tunnel and enhancing traffic safety. This method can improve the air circulation effect in the traffic tunnel near the reservoir, allowing vehicles passing through the traffic tunnel to travel in a more ventilated environment. This structure eliminates the need for additional ventilation facilities in the traffic tunnel, thus reducing the construction cost of the traffic tunnel.

[0060] The system for increasing the discharge temperature of a reservoir disclosed in this embodiment of the invention may further include a third valve 75, the inlet of which is connected to the compression-side outlet of the heat exchanger 40. The outlet of the third valve 75 may be connected to a gas storage device 60. To increase the gas storage capacity, there may be multiple gas storage devices 60, and correspondingly, there may be multiple outlets of the third valve 75, each connected to one of the multiple gas storage devices 60. In this case, after heat exchange with the heat storage tank 50, the heat exchanger 40 can discharge ambient temperature high-pressure air and distribute it to multiple gas storage devices 60 for temporary storage via the third valve 75. In this embodiment of the invention, the third valve 75 is essentially a diversion valve, and the third valve 75 may be made of stainless steel. The number of outlets of the third valve 75 is equal to the number of gas storage devices 60. In one embodiment, there are 10 outlets of the third valve 75, and correspondingly, there are also 10 gas storage devices 60. The third valve 75 may be equipped with a valve controller, which can adjust the flow rate of each outlet of the third valve 75.

[0061] Similarly, the first valve 71 and the second valve 72 can each be equipped with a valve controller, which can be used to adjust the flow ratio of their multiple outlets.

[0062] Specifically, the compression side outlet of heat exchanger 40 can be connected to the inlet of the third valve 75 via a pressure-bearing insulated steel pipe. The gas storage device 60 can be a gas storage tank, which can be fixed to a prefabricated gas storage device foundation at the bottom of the water body. The gas storage device foundation can be a concrete foundation. The gas storage device 60 can be a cubic structure or a cylindrical structure; this embodiment of the invention does not limit the specific shape and size of the gas storage device 60. This embodiment of the invention places the gas storage device 60 at the bottom of the reservoir, thus reducing noise during the air storage process. In one embodiment, the gas storage device 60 can be made of flexible material; the water pressure at the bottom of the reservoir can provide the pressure required to store high-pressure air. This structure eliminates the need for rigid pressure-bearing materials, which helps reduce construction costs.

[0063] In this embodiment of the invention, the heating device 80 may be equipped with a discharge valve. When the discharge valve is open, the heat exchange medium in the heating device 80 can be discharged and directly enter the water at the bottom of the water body to heat the water. In one example, there may be multiple discharge valves, which helps to improve the discharge efficiency of the heat exchange medium in the heating device 80. When it is necessary to rapidly increase the discharge water temperature, the discharge valve of the heating device 80 can be opened. When it is not necessary to rapidly increase the discharge water temperature, the discharge valve of the heating device 80 is closed, and the heat exchange medium in the heating device 80 will not be discharged, but will only circulate between the heat storage tank 50 and the heating device 80. The heat exchange medium with higher temperature will exchange heat with the water at the bottom of the water body at the heating device 80. The heating device 80 may be designed with a structure that facilitates heat exchange, for example, the heating device 80 may be equipped with heat sinks. Specifically, the discharge valve may be a one-way valve, thereby realizing the one-way discharge of the heat exchange medium from the heating device 80, and the heat exchange medium may be water. Of course, the discharge valve can also be a two-way valve. After the heat exchange medium in the heating device 80 is discharged under the drive of the first drive pump mentioned above, a portion of the water at the bottom of the water area driven by the first drive pump can be drawn into the heating device 80 to serve as the heat exchange medium.

[0064] The system for raising the discharge temperature of a reservoir disclosed in this embodiment of the invention may further include a third connecting pipe 76. The inlet of the third connecting pipe 76 may be connected to the outlet of the turbine expansion unit 20, and the outlet of the third connecting pipe 76 may be connected to the discharge channel of the reservoir, thereby delivering atmospheric pressure air with residual heat after work to the discharge channel to raise the temperature of the water in the discharge channel, which can further increase the discharge temperature of the reservoir.

[0065] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A system for increasing the temperature of water discharged from a reservoir, characterized in that, Includes a compressor (10), a turbine expansion unit (20), and a generator (30) located on the bank of the reservoir, and a heat exchanger (40), a heat storage tank (50), a gas storage device (60), a first valve (71), and a heating device (80) located at the bottom of the water area of ​​the reservoir, wherein: The compressor (10) is connected to the compression-side inlet of the heat exchanger (40) to deliver the compressed high-temperature, high-pressure air to the heat exchanger (40). The heat exchanger (40) is located on the heat storage tank (50), and the high-temperature, high-pressure air in the heat exchanger (40) exchanges heat with the heat exchange medium in the heat storage tank (50) to form ambient-temperature, high-pressure air. The compression-side outlet of the heat exchanger (40) is connected to the gas storage device (60), and the gas storage device (60) is connected to the inlet of the first valve (71). The first outlet of 71) is connected to the expansion side inlet of the heat exchanger (40), the expansion side outlet of the heat exchanger (40) is connected to the inlet of the turbine expansion unit (20), the turbine expansion unit (20) is connected to the generator (30); the medium outlet of the heat storage tank (50) is connected to the medium inlet of the heating device (80), the medium inlet of the heat storage tank (50) is connected to the medium outlet of the heating device (80); the heating device (80) is located at the bottom of the water area and upstream of the outlet of the reservoir.

2. The system for increasing the temperature of reservoir discharge water according to claim 1, characterized in that, The system for raising the temperature of the reservoir discharge also includes an aeration device (100) and a second valve (72). The aeration device (100) is located at the bottom of the water area of ​​the reservoir. The second outlet of the first valve (71) is connected to the inlet of the second valve (72). The first outlet of the second valve (72) is connected to the aeration device (100) to enable the aeration device (100) to perform underwater aeration. The aeration device (100) is located at the bottom of the water area and upstream of the discharge outlet of the reservoir.

3. The system for increasing the temperature of reservoir discharge water according to claim 2, characterized in that, The aeration device (100) includes an aeration chamber (101) and a plurality of aeration plates (102) all disposed at the bottom of the water area. The air inlet of the aeration chamber (101) is connected to the first outlet of the second valve (72). The plurality of aeration plates (102) are rotatably disposed at the air outlet of the aeration chamber (101). The plurality of aeration plates (102) are all provided with aeration holes. The diameter of the aeration holes provided by the plurality of aeration plates (102) is not all equal.

4. The system for increasing the temperature of reservoir discharge water according to claim 2, characterized in that, The system for raising the discharge temperature of the reservoir also includes a first connecting pipe (73) and a propagation device (110). The first port of the first connecting pipe (73) is connected to the second outlet of the first valve (71), and the second port of the first connecting pipe (73) is connected to the inlet of the second valve (72). The first connecting pipe (73) includes a first heat exchange section (731), which is located between the first port and the second port of the first connecting pipe (73). The propagation device (110) is located on the bank of the reservoir. The propagation device (110) includes a first heat exchange pool (111). At least a portion of the first heat exchange section (731) is located in the first heat exchange pool (111) and is used to absorb the heat of the heat exchange medium in the first heat exchange pool (111) to heat the ambient temperature high-pressure air it delivers.

5. The system for increasing the temperature of water discharged from a reservoir according to claim 4, characterized in that, The aquaculture device (110) further includes a functional fish pond (112), a water purification pond (113), a sewage pond (114), and a second heat exchange section (115); wherein: The outlet of the water purification tank (113) is connected to the inlet of the functional fish pond (112), and the outlet of the functional fish pond (112) is connected to the sewage tank (114). The sewage tank (114) is located between the water purification tank (113) and the first heat exchange tank (111). A tilting frame is provided inside the sewage tank (114) for tilting and transporting the frozen ice in the sewage tank (114) to the water purification tank (113). The second heat exchange section (115) is connected to the first heat exchange tank (111). The heat exchange medium inside is connected, and the second heat exchange section (115) is located in the sewage tank (114). The second heat exchange section (115) is an electric refrigeration structural component and is used to realize the heat exchange between the heat exchange medium in the first heat exchange tank (111) and the sewage in the sewage tank (114) so ​​that the sewage freezes and heats the heat exchange medium in the first heat exchange tank (111). The first heat exchange section (731) exchanges heat with the heat exchange medium in the first heat exchange tank (111) to heat the ambient temperature high-pressure air it transports.

6. The system according to claim 4, characterized in that, The first heat exchange section (731) is an electric refrigeration structural component. The first heat exchange section (731) is used to realize the heat exchange medium in the first heat exchange pool (111) and the ambient temperature high pressure air in the first heat exchange section (731) to heat the ambient temperature high pressure air and reduce the temperature of the heat exchange medium in the first heat exchange pool (111).

7. The system for increasing the temperature of reservoir discharge water according to claim 2, characterized in that, The system for raising the temperature of the reservoir discharge also includes a second connecting pipe (74), the inlet of which is connected to the second outlet of the second valve (72), and the outlet of which extends into a traffic tunnel near the reservoir.

8. The system for increasing the temperature of reservoir discharge water according to claim 1, characterized in that, There are multiple gas storage devices (60), and the system for raising the temperature of the reservoir discharge water also includes a third valve (75). The inlet of the third valve (75) is connected to the outlet of the compression side, and there are multiple outlets of the third valve (75) that are connected to multiple gas storage devices (60) in a one-to-one correspondence.

9. The system for increasing the temperature of reservoir discharge water according to claim 1, characterized in that, The heating device (80) is equipped with a discharge valve, and when the discharge valve is in the open state, the heat exchange medium in the heating device (80) can be released.

10. The system for increasing the temperature of reservoir discharge water according to claim 1, characterized in that, The system for raising the temperature of the reservoir discharge also includes a third connecting pipe (76), the inlet of which is connected to the outlet of the turbine expansion unit (20), and the outlet of which is connected to the discharge channel of the reservoir.

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