Thermal storage and pressure storage cycle power generation system and control method thereof

Abstract

The present application provides a heat storage and pressure storage cycle power generation system, which includes a heat storage and pressure storage unit connected to a heat source, the heat source absorbs and transmits heat energy to the heat storage and pressure storage unit, so that a first working fluid in the heat storage and pressure storage unit is heated and pressurized and then converted into a gaseous state; a first power generation device receives the high-temperature and high-pressure first working fluid released from the heat storage and pressure storage unit and converts the fluid kinetic energy of the first working fluid into electrical energy; a heat storage tank receives the first working fluid flowing through the first power generation device for heat exchange and thermal energy storage; and a cooling tank receives the first working fluid from the heat storage tank, causes the first working fluid to undergo a phase change to a liquid state, and then transmits it to the heat storage and pressure storage unit to form a cycle.

Description

Technical Field

[0001] The present application relates to a heat storage and pressure storage cycle power generation system for converting thermal energy into electrical energy. Background Art

[0002] Taiwan Patent Publication No. TW202037860, filed by the applicant, discloses a heat pipe-type power generation water heater comprising: at least one heat pipe body, configured to provide a working fluid flow channel, heat conduction, and other integrated devices; at least one first power generation device disposed between the flow channels of the heat pipe body, configured to convert the fluid kinetic energy of the working fluid into electrical energy; and at least one heat storage and pressure storage unit, configured to exchange heat with the heat conduction portion of the heat pipe body and store heat energy to provide hot water.

[0003] Previous technologies have focused on generating electricity and storing thermal energy using solar energy, waste heat from electrical appliances, or small temperature differences. However, the pressure that heat pipes can withstand in the original structural design is limited, thus restricting the working fluids that can be used and the power generation efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present application is to provide a heat storage and pressure storage cycle power generation system, which includes a heat storage and pressure storage unit connected to a heat source, the heat energy of the heat source is transmitted to the heat storage and pressure storage unit to increase the temperature and pressure of a first working fluid in the heat storage and pressure storage unit and convert it into a gaseous state, a first power generation device receives the high-temperature and high-pressure first working fluid released from the heat storage and pressure storage unit and converts the fluid kinetic energy of the first working fluid into electrical energy, a heat storage tank receives the first working fluid flowing through the first power generation device and stores the heat energy generated by the first working fluid during heat exchange, and a cooling tank receives the first working fluid from the heat storage tank and causes the first working fluid to undergo a phase change before transmitting it to the heat storage and pressure storage unit to form a cycle.

[0005] The heat storage tank has multiple heat exchangers inside to increase the surface area and speed up the heat exchange, and the first working medium flows in for heat exchange. The heat storage tank has a high-temperature layer, a medium-temperature layer and a low-temperature layer, which have an isolation function and reduce heat diffusion, so that the high temperature can remain in the high-temperature layer. After the first working medium undergoes heat exchange in the heat storage tank, it flows through the cooling tank and then flows back to the heat storage and pressure storage unit.

[0006] There is also a second working medium for pressurizing or depressurizing the liquid first working medium, that is, the pressure generated by the second working medium is used to control the temperature point at which the first working medium undergoes phase change.

[0007] Preferably, a temperature control valve is arranged between the first power generation device and the heat storage tank. The first working fluid flows through the first power generation device and then flows through the temperature control valve. The temperature control valve controls the first working fluid to flow into the high-temperature layer or the medium and low-temperature layer for heat exchange based on the waste heat temperature after the first working fluid generates electricity, thereby maintaining the temperature of the high-temperature layer to maintain the benefits of energy storage and nighttime power generation.

[0008] Preferably, there is also a circulation return pipe arranged between the first power generation device and the temperature control valve to facilitate maintaining the continuous operation of the first power generation device with flywheel blades.

[0009] Preferably, a heater is provided in the heat storage tank to utilize the cheaper off-peak electricity or excess green electricity to store high-temperature heat, and to use the stored heat energy to generate electricity during the more expensive peak electricity consumption period to achieve the purpose of balancing the power grid and making profits.

[0010] There are also multiple control valves arranged in the heat storage and pressure storage unit, including a heat energy inlet control valve, a heat energy outlet control valve, a first working fluid reflux control valve and a first working fluid outlet control valve. These control valves are used to control the heat energy inlet and outlet and the first working fluid inlet and outlet of a first heat storage and pressure storage tank, a second heat storage and pressure storage tank and a third heat storage and pressure storage tank of the heat storage and pressure storage unit.

[0011] Preferably, two of the heat storage and pressure storage tanks of the heat storage and pressure storage unit store the first working fluid in liquid form, so the design reduces the time for waiting for the first working fluid to heat up and the heat storage and pressure storage tanks to cool down, thereby improving power generation efficiency.

[0012] Preferably, the present application also has a working fluid adjustment device arranged between the heat storage and pressure storage unit and the first power generation device or the cooling tank. When a change in the external ambient temperature is detected, the system base pressure maintained by the second working fluid is adjusted to change the condensation temperature of the first working fluid to improve the circulation efficiency.

[0013] Preferably, the present application further comprises a liquid level detector disposed in the heat storage tank, and when it is detected that the first working fluid is insufficient, the working fluid adjustment device is activated to replenish the first working fluid and allow the first working fluid to flow for heat circulation.

[0014] In addition, a water tower is provided between the heat storage tank and the cooling tank, an air bag is provided in the water tower, and a second power generation device is provided between the water tower and the cooling tank. When the first working fluid flows into the water tower to expand the air bag, the liquid originally stored in the water tower flows out and drives the second power generation device. When the first working fluid condenses and flows out, the air bag shrinks, and the liquid flows back into the water tower and drives the second power generation device again, thereby generating more efficient power.

[0015] The present application also includes a control method for a heat storage and pressure storage cycle thermal power generation system, which includes the following steps:

[0016] (A) opening the heat storage and pressure storage unit and receiving heat energy from a heat source, causing a first working fluid in the heat storage and pressure storage unit to reach a working pressure and temperature, converting the first working fluid into a vaporized first working fluid, controlling the vaporized first working fluid to flow through the first power generation device and into a heat storage tank, and utilizing the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device to generate electricity;

[0017] (B) after the vaporized first working medium is transferred to the heat storage tank for heat exchange, the vaporized first working medium is transferred to the cooling tank to be condensed back into the liquid state, and the liquid state first working medium is returned to the heat storage and pressure storage unit;

[0018] (C) closing the thermal storage and pressure storage unit; and

[0019] (D) Repeat steps (A) to (C) at least once to form a heat storage and pressure storage power generation cycle.

[0020] Preferably, step (A) further comprises the following steps:

[0021] (A1) opening a heat energy inlet control valve and a heat energy outlet control valve and switching to a first heat storage and pressure storage tank;

[0022] (A2) the first thermal storage and pressure storage tank receives heat energy from a heat source, and when the first working fluid in the first thermal storage and pressure storage tank reaches a working pressure and temperature such that the first working fluid reaches a vaporization working condition, a first working fluid outlet control valve is opened and switched to the first thermal storage and pressure storage tank, and a first working fluid return port control valve is opened and switched to a third thermal storage and pressure storage tank, so that the vaporized first working fluid flows through a first power generation device, and the first power generation device is driven by the fluid kinetic energy of the vaporized first working fluid; and

[0023] (A3) Switch the heat energy inlet control valve and the heat energy outlet control valve to a second heat storage and pressure storage tank.

[0024] Preferably, step (B) further comprises the following steps:

[0025] (B1) allowing the vaporized first working fluid to flow through the heat storage tank into a water tower, causing an air bag in the water tower to expand, thereby driving a liquid originally stored in the water tower to flow out, and utilizing the fluid kinetic energy of the liquid to drive a second power generation device to generate a first power generation; and

[0026] (B2) When the first working medium condenses back into liquid, the air bag shrinks, and the liquid flows back into the water tower and drives the second power generation device to generate electricity for the second time.

[0027] The details of other functions and embodiments of the present application are described below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a schematic diagram of an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of another embodiment of the present application;

[0031] Figure 3 This is a schematic diagram of the heat storage and pressure storage unit of this application;

[0032] Figure 4 is a cross-sectional view of an embodiment of the present application;

[0033] Figure 5 This is a schematic diagram of the thermal cycle power generation steps of an embodiment of the present application;

[0034] Figures 6 to 8 These are steps A1 to A7 of the embodiment of the present application;

[0035] Figure 9 These are steps B1 to B2 of the embodiment of the present application;

[0036] Figure 10 This is step C1 of the embodiment of the present application.

[0037] Explanation of symbols

[0038] A~D: Steps A1~A7: Steps B1~B2: Steps

[0039] C1: Step 10: Heat Source 20: Thermal Storage and Pressure Storage Unit

[0040] 21: First heat storage and pressure storage tank 22: Second heat storage and pressure storage tank 23: Third heat storage and pressure storage tank

[0041] 30: Water tower 31: Second power generation device 32: Air bag

[0042] 40: heat storage tank 401: high temperature layer 402: medium temperature layer

[0043] 403: Low temperature layer 41: First power generation device 42: Temperature control valve

[0044] 43: Circulation reflux pipe 44: Heat exchanger 46: Heater

[0045] 50: Cooling tank 61: Heat energy inlet control valve 62: Heat energy outlet control valve

[0046] 63: First working fluid outlet control valve 64: First working fluid reflux control valve DETAILED DESCRIPTION

[0047] The positional relationships described in the following embodiments include up, down, left, and right. Unless otherwise specified, they are based on the directions of the components shown in the drawings.

[0048] See also Figures 1 to 4 A thermal storage and pressure storage cycle power generation system is shown, comprising a thermal storage and pressure storage unit 20 connected to a heat source 10. The heat energy of the heat source 10 is transferred to the thermal storage and pressure storage unit 20, causing a first working fluid within the thermal storage and pressure storage unit 20 to increase in temperature and pressure, converting it into a gaseous state upon release. A first power generation device 41 receives the high-temperature, high-pressure first working fluid released from the thermal storage and pressure storage unit 20 and converts the fluid kinetic energy of the first working fluid into electrical energy. A heat storage tank 40 receives the first working fluid flowing through the first power generation device 41 and performs heat exchange on the first working fluid to store thermal energy. A cooling tank 50 receives the first working fluid from the heat storage tank 40, causes the first working fluid to undergo a phase change to a liquid state, and then transfers it to the thermal storage and pressure storage unit 20 to complete a cycle. The heat source 10 can be process waste heat, solar thermal energy, or other heat sources.

[0049] In which, the heat storage tank 40 or the cooling tank 50 also has a second working fluid filled in the space outside the liquid first working fluid. The second working fluid is used to pressurize or depressurize the liquid first working fluid, that is, the pressure generated by the second working fluid is used to control the temperature point at which the first working fluid undergoes phase change.

[0050] See also Figure 2 A water tower 30 is also disposed between the heat storage tank 40 and the cooling tank 50. An air bag 32 is disposed within the water tower 30, and a second power generation device 31 is disposed between the water tower 30 and the cooling tank 50. When a first working fluid flows into the water tower 30, the air bag 32 expands, causing the liquid originally stored in the water tower 30 to flow out and drive the second power generation device 31. When the first working fluid condenses and flows out, the air bag 32 deflates, causing the liquid to flow back into the water tower 30 and drive the second power generation device 31 again, thereby generating more efficient power. In this embodiment, the second power generation device 31 is a water turbine generator.

[0051] See also Figure 3The present application also has multiple control valves arranged in the heat storage and pressure storage unit 20. The heat storage and pressure storage unit 20 includes a first heat storage and pressure storage tank 21, a second heat storage and pressure storage tank 22, and a third heat storage and pressure storage tank 23. The control valves are respectively a heat energy inlet control valve 61, a heat energy outlet control valve 62, a first working fluid reflux control valve 64, and a first working fluid outlet control valve 63. The control valves are used to control the heat energy inlet and outlet and the first working fluid inlet and outlet of the heat storage and pressure storage tanks.

[0052] In actual use, two of the thermal storage and pressure storage tanks store the first working fluid, while the other is an empty tank. When the first working fluid in one of the thermal storage and pressure storage tanks vaporizes and flows through the first power generation device 41, the heat storage tank 40, the water tower 30, and the cooling tank 50, it is stored in the empty tank. This makes the thermal storage and pressure storage tank that originally stored the first working fluid an empty tank, and serves as the thermal storage and pressure storage tank for storing the first working fluid in the next cycle. Therefore, the time waiting for the first working fluid to heat up and the thermal storage and pressure storage tank to cool down can be reduced, thereby improving power generation efficiency.

[0053] See also Figure 4 The heat storage tank 40 has a high-temperature layer 401, a medium-temperature layer 402, and a low-temperature layer 403. Dividing the heat storage tank 40 into the high-temperature layer 401, the medium-temperature layer 402, and the low-temperature layer 403 has an isolation effect, thereby reducing the thermal diffusion of the stored heat energy. When the first working medium flows through the heat storage tank 40, the first working medium exchanges heat in the heat storage tank 40, so that the residual heat of the first working medium can be preserved in the heat storage tank 40, thereby providing nighttime use or as a backup.

[0054] In order to achieve the benefits of balancing the power grid and obtaining the electricity price difference, in other embodiments, two heaters 46 can be installed in the heat storage tank 40, respectively located in the high-temperature layer 401 and the medium-temperature layer 402, so as to utilize the lower-priced off-peak electricity or excess green electricity for high-temperature heat storage. During the peak electricity consumption period with higher prices, the stored heat energy can be used to generate electricity to achieve the effect of balancing the power grid and making profits.

[0055] In this embodiment, there is also a temperature control valve 42 arranged between the first power generation device 41 and the heat storage tank 40. The first working fluid flows through the first power generation device 41 and then flows through the temperature control valve 42. The temperature control valve 42 controls the first working fluid to flow into the high-temperature layer 401 or the medium and low-temperature layers 402, 403 for heat exchange based on the waste heat temperature after the first working fluid generates electricity, thereby maintaining the temperature of the high-temperature layer 401 to maintain the efficiency of power generation and energy storage at night.

[0056] A circulating return pipe 43 is further provided between the first power generation device 41 and the temperature control valve 42 to facilitate the continuous operation of the first power generation device 41 having the flywheel blades.

[0057] After heat exchange in the heat storage tank 40, the first working medium flows into the cooling tank 50. The cooling tank 50 condenses the first working medium back into liquid form and then flows back to the heat storage and pressure storage unit 20. In this embodiment, the heat storage tank 40 has multiple heat exchangers 44 to increase the surface area and accelerate the heat exchange rate.

[0058] In this embodiment, a working fluid adjustment device 70 is further provided between the heat storage and pressure storage unit 20 and the first power generation device 41 or the cooling tank 50. A liquid level detector (not shown) is provided within the heat storage tank 40. When the liquid level detector detects a shortage of the first working fluid, the working fluid adjustment device 70 is activated to replenish the first working fluid. Alternatively, when a change in the external ambient temperature is detected, the working fluid adjustment device 70 adjusts the second working fluid to maintain the system base pressure, thereby changing the condensation temperature of the first working fluid and improving cycle efficiency.

[0059] See also Figures 5 to 10 The present application also provides a control method for a heat storage and pressure storage cycle thermal power generation system, which comprises the following steps:

[0060] (A) transferring heat energy from a heat source 10 to the heat storage and pressure storage unit 20, causing a first working fluid in the heat storage and pressure storage unit 20 to reach a working pressure and temperature, thereby achieving vaporization working conditions and converting the first working fluid into the vaporized first working fluid; controlling the vaporized first working fluid to flow through the first power generation device 41 into a heat storage tank 40; and utilizing the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device 41 to generate electricity;

[0061] (B) after the vaporized first working medium is transferred to the heat storage tank 40 for heat exchange, the vaporized first working medium is transferred to the cooling tank 50 to be condensed back into the liquid state, and the liquid state first working medium is returned to the heat storage and pressure storage unit 20;

[0062] (C) closing the thermal storage and pressure storage unit 20; and

[0063] (D) Repeat steps (A) to (C) at least once to form a heat storage and pressure storage power generation cycle.

[0064] In this embodiment, steps A1 to A7, steps B1 to B3, and step C1 are included to form a more efficient cyclic power generation. The steps of the thermal storage and pressure storage power generation cycle are as follows:

[0065] (A1) Opening a heat energy inlet control valve 61 and a heat energy outlet control valve 62 and switching to a first heat storage and pressure storage tank 21. At this time, the first heat storage and pressure storage tank 21 and the second heat storage and pressure storage tank 22 already store the liquid first working medium, while the third heat storage and pressure storage tank 23 is empty.

[0066] (A2) The first heat storage and pressure storage tank 21 receives heat energy from a heat source 10. When a first working fluid in the first heat storage and pressure storage tank 21 reaches a working pressure and temperature, so that the first working fluid reaches a vaporization condition, a first working fluid outlet control valve 63 is opened and switched to the first heat storage and pressure storage tank 21, and a first working fluid return port control valve 64 is opened and switched to a third heat storage and pressure storage tank 23, so that the vaporized first working fluid flows through a first power generation device 41. The first working fluid return port control valve is opened and switched to the third heat storage and pressure storage tank 23, and the fluid kinetic energy of the vaporized first working fluid is used to drive the first power generation device 41;

[0067] (A3) switching the heat energy inlet control valve 61 and the heat energy outlet control valve 62 to a second heat storage and pressure storage tank 22;

[0068] (B1) The vaporized first working fluid flows through a heat storage tank 40 to exchange waste heat to the high-temperature layer 401, the medium-temperature layer 402, and the low-temperature layer 403, or the medium-temperature layer 402 and the low-temperature layer 403, of the heat storage tank 40, and then flows into an air bag 32 in a water tower 30. After the air bag 32 expands, it drives the liquid originally stored in the water tower 30 to flow out, and the fluid kinetic energy of the liquid drives a second power generation device 31 to generate electricity for the first time;

[0069] (B2) After the vaporized first working medium flows into a cooling tank 50, the vaporized first working medium is condensed back into a liquid state and flows back into the third thermal storage and pressure storage tank 23. When the first working medium condenses back into a liquid state, the air bag 32 is deflated, and the liquid flows back into the water tower and drives the second power generation device 31 to generate electricity for the second time, forming a first batch power generation process. At this time, the third thermal storage and pressure storage tank 23 is already filled with liquid first working medium, and the first thermal storage and pressure storage tank 21 is empty.

[0070] (C1) closing the first working fluid return port control valve 64 and the first working fluid outlet control valve 63;

[0071] (A4) The second heat storage and pressure storage tank 22 receives heat energy from the heat source 10. When a first working fluid in the second heat storage and pressure storage tank 22 reaches a working pressure and temperature such that the first working fluid reaches vaporization working conditions, the first working fluid outlet control valve 63 is opened and switched to the second heat storage and pressure storage tank 22, and a first working fluid return port control valve 64 is opened and switched to the first heat storage and pressure storage tank 21, so that the vaporized first working fluid flows through a first power generation device 41, and the first power generation device 41 is driven by the fluid kinetic energy of the vaporized first working fluid;

[0072] (A5) switching the heat energy inlet control valve 61 and the heat energy outlet control valve 62 to the third heat storage and pressure storage tank 23;

[0073] (B1) The vaporized first working fluid flows through a heat storage tank 40 to exchange waste heat to the high-temperature layer 401, the medium-temperature layer 402, and the low-temperature layer 403, or the medium-temperature layer 402 and the low-temperature layer 403, of the heat storage tank 40, and then flows into the air bag 32 in the water tower 30. After the air bag 32 in the water tower 30 expands, it drives the liquid originally stored in the water tower 30 to flow out, and the fluid kinetic energy of the liquid is used to drive the second power generation device 31;

[0074] (B2) The vaporized first working medium flows into the cooling tank 50, condenses back into a liquid state, and flows back into the first thermal storage and pressure storage tank 21. When the first working medium condenses back into a liquid state, the air bag 32 shrinks, and the liquid flows back into the water tower 30, driving the second power generation device 31 to generate electricity for the second time, forming a second batch power generation process. At this time, the first thermal storage and pressure storage tank 21 already stores the liquid first working medium, and the second thermal storage and pressure storage tank 22 is empty.

[0075] (C1) closing the first working fluid return port control valve 64 and the first working fluid outlet control valve 63;

[0076] (A6) The third thermal storage and pressure storage tank 23 receives heat energy from the heat source 10. When a first working fluid in the third thermal storage and pressure storage tank 23 reaches a working pressure and temperature such that the first working fluid reaches vaporization working conditions, the first working fluid outlet control valve 63 is opened and switched to the third thermal storage and pressure storage tank 23, and a first working fluid return port control valve 64 is opened and switched to the second thermal storage and pressure storage tank 22, so that the vaporized first working fluid flows through a first power generation device 41 into the second thermal storage and pressure storage tank 22, and the fluid kinetic energy of the vaporized first working fluid is used to drive the first power generation device 41;

[0077] (A7) switching the heat energy inlet control valve 61 and the heat energy outlet control valve 62 to the first heat storage and pressure storage tank 21;

[0078] (B1) The vaporized first working fluid flows through a heat storage tank 40 to exchange waste heat to the high-temperature layer 401, the medium-temperature layer 402, and the low-temperature layer 403, or the medium-temperature layer 402 and the low-temperature layer 403, of the heat storage tank 40, and then flows into the air bag 32 in the water tower 30, causing the air bag 32 in the water tower 30 to expand, driving the liquid originally stored in the water tower 30 to flow out, and utilizing the fluid kinetic energy of the liquid to drive the second power generation device 31;

[0079] (B2) The vaporized first working medium flows into the cooling tank 50, condensing the vaporized first working medium back into a liquid state and flowing back into the second thermal storage and pressure storage tank 22. When the first working medium condenses back into a liquid state, the air bag 32 shrinks, and the liquid flows back into the water tower 30 and drives the second power generation device 31 to generate electricity for the second time, forming a third batch power generation process. At this time, the second thermal storage and pressure storage tank 22 has stored the liquid first working medium, and the third thermal storage and pressure storage tank 23 is empty.

[0080] (C1) closing the first working fluid return port control valve 64 and the first working fluid outlet control valve 63; and

[0081] (D) Repeating the above steps (A1) to (C1) constitutes one heat storage and pressure storage power generation cycle.

[0082] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present application, and do not impose any form of limitation on the implementation methods of the technology of the present application. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present application, but they should still be regarded as technologies or embodiments that are essentially the same as those of the present application.

Claims

1. A heat storage and pressure storage cycle power generation system, characterized in that: Include: a thermal storage and pressure storage unit connected to a heat source, wherein heat energy from the heat source is transferred to the thermal storage and pressure storage unit, thereby increasing the temperature and pressure of a first working fluid in the thermal storage and pressure storage unit, thereby converting the first working fluid into a gaseous state upon release; the thermal storage and pressure storage unit comprising a first thermal storage and pressure storage tank, a second thermal storage and pressure storage tank, and a third thermal storage and pressure storage tank; two of the thermal storage and pressure storage tanks store the first working fluid in liquid form, while the other thermal storage and pressure storage tank is empty; and a plurality of control valves are provided in the thermal storage and pressure storage unit for controlling the flow of heat energy into and out of the thermal storage and pressure storage tanks and the flow of the first working fluid into and out of one of the thermal storage and pressure storage tanks; a first power generation device receiving the high-temperature and high-pressure first working fluid released from the heat storage and pressure storage unit and converting the fluid kinetic energy of the first working fluid into electrical energy; a heat storage tank, receiving the first working medium flowing through the first power generation device, wherein the first working medium performs heat exchange and stores heat energy; as well as A cooling tank receives the first working medium from the heat storage tank and transmits the first working medium to the heat storage and pressure storage unit after the first working medium undergoes a phase change.

2. The heat storage and pressure storage cycle power generation system according to claim 1, characterized in that: The heat storage tank and / or the cooling tank further comprises a second working medium for pressurizing or depressurizing the liquid first working medium.

3. The heat storage and pressure storage cycle power generation system according to claim 1, characterized in that: The heat storage tank has a plurality of heat exchangers inside.

4. The heat storage and pressure storage cycle power generation system according to claim 3, characterized in that: A temperature control valve is arranged between the first power generation device and the heat storage tank.

5. The heat storage and pressure storage cycle power generation system according to claim 4, characterized in that: A circulation return pipe is arranged between the first power generation device and the temperature control valve.

6. The heat storage and pressure storage cycle power generation system according to claim 1, characterized in that: The heat storage tank has a high-temperature layer, a medium-temperature layer and a low-temperature layer.

7. The heat storage and pressure storage cycle power generation system according to claim 1, characterized in that: At least one heater is disposed inside the heat storage tank.

8. The heat storage and pressure storage cycle power generation system according to claim 1, characterized in that: There is also at least one working medium adjustment device arranged between the heat storage and pressure storage unit and the first power generation device or the cooling tank.

9. The heat storage and pressure storage cycle power generation system according to any one of claims 1 to 8, characterized in that: A water tower is also provided between the heat storage tank and the cooling tank.

10. The heat storage and pressure storage cycle power generation system according to claim 9, characterized in that: A second power generation device is provided between the water tower and the cooling tank.

11. The heat storage and pressure storage cycle power generation system according to claim 10, characterized in that: An air bag is provided in the water tower. The first working fluid flowing out of the heat storage tank flows into the air bag, causing the air bag to expand, causing the liquid originally stored in the water tower to flow out and thereby drive the second power generation device to generate electricity for the first time; when the first working fluid condenses back into liquid state, the air bag shrinks, the liquid flows back into the water tower and drives the second power generation device to generate electricity for the second time.

12. A control method for a thermal storage and pressure storage cycle power generation system, using the thermal storage and pressure storage cycle power generation system as claimed in claim 1, characterized in that: It includes the following steps: (A) A heat storage and pressure storage unit receives heat energy from a heat source, causing a first working fluid in the heat storage and pressure storage unit to reach a working pressure and temperature, converting the first working fluid into a vaporized first working fluid, controlling the vaporized first working fluid to flow through a first power generation device and then into a heat storage tank, and utilizing the fluid kinetic energy of the vaporized first working fluid to drive the first power generation device to generate electricity; (B) after the vaporized first working medium is transferred to the heat storage tank for heat exchange, the vaporized first working medium is transferred to a cooling tank to be condensed back into the liquid state, and the liquid state first working medium is returned to the heat storage and pressure storage unit; (C) closing the thermal storage and pressure storage unit; and (D) Repeat steps (A) to (C) at least once to form a heat storage and pressure storage power generation cycle.

13. The control method of the thermal storage and pressure storage cycle power generation system according to claim 12, characterized in that: The step (B) further comprises: (B1) allowing the vaporized first working fluid to flow through the heat storage tank into an air bag in a water tower, causing the air bag to expand, thereby driving a liquid originally stored in the water tower to flow out, and utilizing the fluid kinetic energy of the liquid to drive a second power generation device to generate electricity for the first time; and (B2) When the first working medium condenses back into liquid, the air bag shrinks, and the liquid flows back into the water tower and drives the second power generation device to generate electricity for the second time.

14. The control method of the thermal storage and pressure storage cycle power generation system according to claim 12, characterized in that: The heat storage and pressure storage unit comprises a first heat storage and pressure storage tank, a second heat storage and pressure storage tank, and a third heat storage and pressure storage tank. Step (A) further comprises the following steps: (A1) opening a heat energy inlet control valve and a heat energy outlet control valve and switching to the first heat storage and pressure storage tank; (A2) the first thermal storage and pressure storage tank receives heat energy from a heat source. When the first working fluid in the first thermal storage and pressure storage tank reaches a working pressure and temperature such that the first working fluid reaches a vaporization working condition, a first working fluid outlet control valve is opened and switched to the first thermal storage and pressure storage tank, and a first working fluid return port control valve is opened and switched to a third thermal storage and pressure storage tank, so that the vaporized first working fluid flows through a first power generation device, and the first power generation device is driven by the fluid kinetic energy of the vaporized first working fluid; as well as (A3) Switch the heat energy inlet control valve and the heat energy outlet control valve to a second heat storage and pressure storage tank.

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