Low-temperature heat energy water wheel power generation equipment and power generation method

Abstract

The invention belongs to the technical field of low-temperature heat energy utilization water wheel power generation, and particularly relates to low-temperature heat energy water wheel power generation equipment and a power generation method. A first working medium valve is arranged on one side of each main cylinder body, a first liquid valve is arranged on the other side of each main cylinder body, or the first working medium valves are arranged on the two sides of one main cylinder body, and the first liquid valves are arranged on the two sides of the other main cylinder body. The first working medium valves are connected with the heat exchanger, and the first liquid valves are correspondingly connected with the water inlet end and the water outlet end of the water turbine through two water pipes. The main piston structure comprises two main piston pieces, the two main piston pieces are connected through a main connecting rod, the main connecting rod is arranged on the opposite sides of the two main cylinder bodies in a penetrating mode, and the two main piston pieces are correspondingly arranged in the two main cylinder bodies. The working medium on one side expands to do work and the working medium on the other side is compressed and liquefied synchronously, the compression and liquefaction process is stable and reliable, stable, reliable, autonomous and continuous operation can be achieved, and the power generation efficiency is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of water wheel power generation utilizing low temperature thermal energy, and in particular relates to a low temperature thermal energy water wheel power generation device and a power generation method. Background Art

[0002] Hydroelectric generators that cannot be deployed in rivers and other areas due to environmental or regional factors generally use other mechanical energy to push the liquid toward the turbine. Among them, the method of using the evaporation and expansion of the working fluid to generate mechanical energy can meet the requirements of driving the liquid to flow to the turbine. However, if the gaseous working fluid after work is liquefied with the help of the cold energy of the natural environment, it will be greatly affected by environmental or seasonal factors, and the stability is poor. The actual application scope and scenarios are limited, and the reliability and efficiency of the unit operation cannot be guaranteed, let alone the continuous operation of the unit. And because the water outlet of the turbine is generally zero pressure, the water outlet of the turbine cannot effectively compress the gaseous working fluid, and it cannot effectively guarantee the continuous operation of the unit. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a low-temperature thermal energy hydro turbine power generation equipment and power generation method that can realize the simultaneous expansion and work of the working fluid on one side and the compression and liquefaction of the working fluid on the other side, and the compression and liquefaction process is stable and reliable, does not require the help of the natural environment to carry out the liquefaction process of the gaseous working fluid, can stably and reliably operate autonomously and continuously and ensure the power generation efficiency, and can be applied in a wider range and scenarios.

[0004] The present invention provides a low-temperature thermal energy water turbine power generation equipment, including a power unit and a water turbine, wherein the power unit includes a main body, and the main body includes a main piston structure and two main cylinder bodies; One side of the two main cylinders is provided with a working fluid valve 1, and the other side is provided with a liquid valve 1, or one of the main cylinders is provided with a working fluid valve 1 on both sides, and the other main cylinder is provided with a liquid valve 1 on both sides; The working medium valve 1 is used to connect with the heat exchanger, and the liquid valve 1 is connected to the water inlet and outlet of the turbine through two water pipes; The main piston structure includes two main piston parts, which are connected by a main connecting rod. The main connecting rod is inserted into the opposite side of the two main cylinder bodies, and the two main piston parts are correspondingly arranged inside the two main cylinder bodies; two working fluid valves alternately input gaseous working fluid into the inside of the main cylinder bodies, pushing the main piston structure as a whole to reciprocate and perform work, driving the liquid inside the corresponding main cylinder body to flow toward the water inlet end of the turbine through the corresponding liquid valve.

[0005] Furthermore, when one side of the two main cylinder bodies is provided with a working fluid valve 1 and the other side is provided with a liquid valve 1, the diameters of the two main cylinder bodies are the same, and the two main cylinder bodies have the same valve on one side thereof and are arranged opposite to each other.

[0006] Furthermore, when a working fluid valve 1 is provided on both sides of one main cylinder body and a liquid valve 1 is provided on both sides of the other main cylinder body, the diameter of the main cylinder body provided with the working fluid valve 1 is larger than the main cylinder body provided with the liquid valve 1, and the diameters of the two main piston members correspond to the inner diameters of the two main cylinder bodies.

[0007] Furthermore, when one of the main cylinder bodies is provided with a working fluid valve 1 on both sides and the other main cylinder body is provided with a liquid valve 1 on both sides, the diameter of the main cylinder body provided with the working fluid valve 1 is the same as the diameter of the main cylinder body provided with the liquid valve 1.

[0008] Furthermore, the power unit further comprises an auxiliary body, the auxiliary body comprises an auxiliary piston structure and two auxiliary cylinder bodies, one of the auxiliary cylinder bodies is provided with a working fluid valve 2 and a working fluid valve 3 on both sides, and the other auxiliary cylinder body is provided with a liquid valve 2 on both sides, the working fluid valve 2 is used to connect with the heat exchanger, the two working fluid valves 3 are correspondingly connected to the two sides of the main cylinder body provided with the working fluid valve 1, and the liquid valves 2 are correspondingly connected to the water inlet and the water outlet of the turbine through two water pipes; The auxiliary piston structure includes two auxiliary piston parts, which are connected by an auxiliary connecting rod. The auxiliary connecting rod is arranged on opposite sides of the two auxiliary cylinder bodies, and the two auxiliary piston parts are correspondingly arranged inside the two auxiliary cylinder bodies; The two working fluid valves 1 alternately input gaseous working fluid into the main cylinder body where they are located, so as to push the main piston structure to move back and forth to do work. After the gaseous working fluid pushes the main piston structure to move and do work, it enters the corresponding side of the auxiliary cylinder body through the working fluid valve 3 on the corresponding side to evaporate and expand twice, pushing the auxiliary piston structure to move in the corresponding direction, driving the liquid in the other auxiliary cylinder body to flow toward the water inlet end of the turbine through the corresponding liquid valve 2, and at the same time, the movement of the auxiliary piston structure compresses the gaseous working fluid on the other side of the auxiliary cylinder body that has completed secondary evaporation and expansion in the previous stage, so that it is liquefied and flows out through the working fluid valve 2 on its side.

[0009] Furthermore, the power unit has two units, in which the gaseous working fluid in one power unit is input into the main cylinder along the working fluid valve one to push the main piston structure to move and do work, while the gaseous working fluid that has done work in the main cylinder of the other power unit enters the secondary cylinder along the working fluid valve three to evaporate and expand secondary to push the secondary piston structure to move and do work, so that the two units can operate in a continuous cycle and alternately.

[0010] Furthermore, the number of main bodies in a single power unit is more than two, and among the more than two main bodies, all main cylinder bodies provided with working fluid valve 1 are synchronously operated in parallel, and all main cylinder bodies provided with liquid valve 1 are synchronously operated in parallel.

[0011] The present invention also provides a method for generating electricity using a low-temperature thermal energy water turbine generator system, comprising the following steps: The gaseous working medium enters through the working medium valve 1 of one of the main cylinders, pushing the main piston structure to move, driving the liquid inside the main cylinder to flow along the corresponding liquid valve 1 toward the water inlet end of the turbine, and at the same time, the main piston structure compresses the gaseous working medium that has completed work inside the other main cylinder to liquefy it and flow out through the working medium valve 1, and in this process, the liquid flowing out of the water outlet end of the turbine enters the other main cylinder through the corresponding liquid valve 1; The working medium valves of the two main cylinder bodies alternately input gaseous working medium, circulate the above content, and push the main piston structure to move back and forth, thereby reciprocatingly pushing the liquid in the main cylinder body to flow toward the water inlet end of the turbine.

[0012] The present invention also provides a method for generating electricity using a low-temperature thermal energy water turbine generator system, comprising the following steps: The gaseous working medium enters the interior of one side of the main cylinder body where the working medium valve 1 is located along one of the working medium valves 1, pushes the main piston structure to move, compresses the gaseous working medium that has completed work in the interior of the other side of the main cylinder body to liquefy it and flows out along the working medium valve 1 at this end, and at the same time drives the liquid in the other main cylinder body to flow along one of the liquid valves 1 toward the water inlet end of the turbine, and in this process, the liquid flowing out of the water outlet end of the turbine enters the interior of the other main cylinder body along the other liquid valve 1; The two working medium valves 1 input gaseous working medium alternately, circulate the above contents, and push the main piston structure to move back and forth, thereby reciprocatingly pushing the liquid on both sides of the main cylinder body provided with the liquid valve 1 to flow toward the water inlet end of the turbine.

[0013] The present invention also provides a method for generating electricity using a low-temperature thermal energy water turbine generator system, comprising the following steps: In a single power unit, the gaseous working medium enters the main cylinder body where the working medium valve one is located along one of the working medium valves one, pushes the main piston structure to move, and drives the liquid in the other main cylinder body to flow along one of the liquid valves one toward the water inlet end of the turbine. During this process, the liquid flowing out of the water outlet end of the turbine enters the auxiliary cylinder body where the liquid valve two is located along one of the liquid valves two; after the gaseous working medium pushes the main piston structure to move and do work, it enters the auxiliary cylinder body where the working medium valve three is located through one of the working medium valves three to evaporate and expand for the second time, pushes the auxiliary piston structure to move, and drives the liquid in the other auxiliary cylinder body to flow along the aforementioned liquid valve two toward the water inlet end of the turbine. During this process, the liquid flowing out of the water outlet end of the turbine enters the main cylinder body where the liquid valve one is located along another liquid valve one; then new gaseous working medium enters the working medium valve one along another working medium valve one Inside the other side of the main cylinder body, the main piston structure is pushed to move in the opposite direction, driving the liquid in the other main cylinder body to flow along the aforementioned other liquid valve 1 toward the water inlet end of the turbine. During this process, the liquid flowing out of the water outlet end of the turbine enters the auxiliary cylinder body where the liquid valve 2 is located along the other liquid valve 2; after the gaseous working medium pushes the main piston structure to move in the opposite direction to perform work, it enters the auxiliary cylinder body where the working medium valve 3 is located through the other working medium valve 3 to evaporate and expand for the second time, pushing the auxiliary piston structure to move in the opposite direction, compressing the gaseous working medium that has completed the secondary evaporation and expansion in the previous stage inside the auxiliary cylinder body to liquefy it and flow out along the working medium valve 2 on its side, and at the same time driving the liquid in the other auxiliary cylinder body to flow along the aforementioned other liquid valve 2 toward the water inlet end of the turbine. During this process, the liquid flowing out of the water outlet end of the turbine enters the main cylinder body where the liquid valve 1 is located along one of the liquid valves 1; A single power unit circulates the above contents, and two power units circulate and operate alternately. When the gaseous working fluid in one power unit is input into the main cylinder along the corresponding working fluid valve one to push the main piston structure to move and do work, the gaseous working fluid that has done work in the main cylinder of the other power unit enters the secondary cylinder along the corresponding working fluid valve three to evaporate and expand for secondary time to push the secondary piston structure to move and do work.

[0014] The beneficial effect of the present invention is that the expansion work of the working fluid on one side and the compression and liquefaction of the working fluid on the other side can be achieved simultaneously, and the compression and liquefaction process is stable and reliable, and there is no need to rely on the natural environment to carry out the liquefaction process of the gaseous working fluid, thus avoiding the instability caused by regional, environmental and seasonal factors. On the basis of utilizing low-temperature thermal energy for hydropower generation, it is ensured that the turbine obtains continuous and stable liquid flow and pressure input, so that the equipment can operate stably and reliably, autonomously and continuously, realize continuous cycle operation, ensure the power generation efficiency of the equipment, and has less application restrictions, and a wider range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a power unit according to a main body implementation mode of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the power unit of the main body implementation mode 2 of the present invention.

[0017] Figure 3 It is a schematic diagram of the main piston structure of the present invention.

[0018] Figure 4 It is a structural schematic diagram of a preferred embodiment of the low-temperature thermal energy water turbine power generation equipment of the present invention.

[0019] Figure 5 It is a front view of a preferred embodiment of the low-temperature thermal energy water turbine power generation equipment of the present invention.

[0020] Figure 6 It is a rear view of a preferred embodiment of the low-temperature thermal energy water turbine power generation equipment of the present invention.

[0021] Figure 7 This is a schematic diagram of the first working stroke of a preferred embodiment of the low-temperature thermal energy water turbine power generation equipment of the present invention.

[0022] Figure 8 This is a schematic diagram of the second working stroke of a preferred embodiment of the low-temperature thermal energy hydro-turbine power generation equipment of the present invention.

[0023] Fig. 9 It is a schematic diagram of the third working stroke of the preferred embodiment of the low-temperature thermal energy water turbine power generation equipment of the present invention.

[0024] Fig.10 It is a schematic diagram of the fourth working stroke of the preferred embodiment of the low-temperature thermal energy water turbine power generation equipment of the present invention.

[0025] In the figure; 1, main cylinder body a; 2, main cylinder body b; 3, main piston structure; 301, main piston member; 302, main connecting rod; 4, working fluid valve a; 5, working fluid valve b; 6, liquid valve a; 7, liquid valve b; 8, water pipe; 9, auxiliary cylinder body a; 10, auxiliary cylinder body b; 11, auxiliary piston structure; 12, working fluid valve 2a; 13, working fluid valve 2b; 14, working fluid valve 3a; 15, working fluid valve 3b; 16, liquid valve 2a; 17, liquid valve 2b; 18, water inlet main pipe; 19, water outlet main pipe; 100, power unit; 200, turbine. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 10As shown, the present invention provides a low-temperature thermal energy hydro-turbine power generation equipment, including a power unit 100 and a turbine 200, wherein the power unit 100 includes a main body, and the main body includes a main piston structure 3 and two main cylinders. A working fluid valve 1 is provided on one side of the two main cylinders, and a liquid valve 1 is provided on the other side, or, a working fluid valve 1 is provided on both sides of one main cylinder, and a liquid valve 1 is provided on both sides of the other main cylinder. The working fluid valve 1 is connected to the heat exchanger, and the liquid valve 1 is connected to the water inlet and the water outlet of the turbine 200 through two water pipes 8, that is, one water pipe 8 is connected to the water inlet of the turbine 200, and the other water pipe 8 is connected to the water outlet of the turbine 200.

[0027] The working fluid valve refers to the valve on the working fluid delivery path, that is, the valve used for delivering the working fluid, and the liquid valve refers to the valve on the delivery path of the liquid used to drive the turbine 200, that is, the valve used for delivering the liquid used by the turbine 200. The working fluid can be a refrigerant, and its evaporation and vaporization can be carried out by utilizing low-temperature thermal energy such as the heat energy of air and water in nature, various industrial waste heat, and geothermal renewable energy, so as to realize hydropower generation under low-temperature thermal energy.

[0028] The main piston structure 3 includes two main piston members 301, which are connected by a main connecting rod 302. The main connecting rod 302 is arranged on the opposite side of the two main cylinders, and one of the main piston members 301 is arranged inside one of the main cylinders, and the other main piston member 301 is arranged inside the other main cylinder. During operation, the two sides inside a single main cylinder are separated by a single main piston member 301, and the main connecting rod 302 is a force transmission rod between the two main piston members 301. When one of the working fluid valves inputs gaseous working fluid into the inside of the main cylinder, the gaseous working fluid pushes the main piston member 301 inside the main cylinder to move, and the main piston member 301 pushes the main piston member 301 inside the other main cylinder to move synchronously through the main connecting rod 302, so that the main piston structure 3 moves as a whole. Therefore, when the two working fluid valves 1 alternately input the gaseous working fluid into the interior of the main cylinder body where they are located, the main piston structure 3 is pushed to move back and forth to perform work, and at the same time, the two main piston members 301 are made to reciprocate synchronously in the corresponding main cylinder body, pressurizing the liquid inside the corresponding main cylinder body and driving the liquid inside the corresponding main cylinder body to flow toward the water inlet end of the turbine 200 through the corresponding liquid valve 1.

[0029] Based on the arrangement of the present invention, when the gaseous working fluid expands and performs work inside the main cylinder body corresponding to the input of one of the working fluid valves, the main piston structure 3 can be used to synchronously perform work in the two main cylinder bodies, so that the expansion work of the working fluid on one side and the compression and liquefaction of the working fluid on the other side are performed synchronously, and the compression and liquefaction process is stable and reliable, and does not require the help of the natural environment to carry out the liquefaction process of the gaseous working fluid, thereby avoiding the instability caused by regional, environmental and seasonal factors. On the basis of utilizing low-temperature thermal energy for hydropower generation, it is ensured that the turbine 200 obtains continuous and stable liquid flow and pressure input, so that the equipment can operate stably and reliably, autonomously and continuously, realize continuous cycle operation, ensure the power generation efficiency of the equipment, and has less application restrictions, and a wider range of application scenarios.

[0030] In the first embodiment of the power unit 100 of the present invention, when a working fluid valve 1 is provided on one side of the two main cylinder bodies and a liquid valve 1 is provided on the other side, the interior of a single main cylinder body on one side of the main piston member 301 is used for expansion work and compression liquefaction of the working fluid, and the other side of the main piston member 301 is used for water discharge and return of the liquid. Therefore, the diameters of the two main cylinder bodies are the same, and the two main cylinder bodies have one side with the same valve arranged relative to each other, that is, the two main cylinder bodies both have one side with a working fluid valve 1 or one side with a liquid valve 1 arranged relative to each other.

[0031] The power generation method of the low-temperature thermal energy water turbine power generation equipment based on the first embodiment of the power unit 100 includes the following steps: The gaseous working medium enters through the working medium valve 1 of one of the main cylinders, pushing the main piston structure 3 to move as a whole, driving the liquid inside the main cylinder to flow along the corresponding liquid valve 1 toward the water inlet end of the turbine 200, and at the same time, the main piston structure 3 compresses the gaseous working medium that has completed work inside the other main cylinder to liquefy it and flow out through the working medium valve 1, and in this process, the liquid flowing out of the water outlet end of the turbine 200 enters the other main cylinder through the corresponding liquid valve 1; The working fluid valves 1 of the two main cylinders alternately input gaseous working fluids, circulate the above contents, and push the main piston structure 3 to move back and forth, thereby reciprocatingly pushing the liquid inside the two main cylinders to flow toward the water inlet end of the turbine 200. Among them, the working fluid valve 1 and the liquid valve 1 are both three-way valves, the heat exchanger includes an evaporator and a condenser, and two interfaces of the working fluid valve 1 are respectively connected to the evaporator and the condenser, and the gaseous working fluid is output along the inside of the evaporator, and the liquefied working fluid flows into the condenser to discharge the heat generated by the liquefaction process. The working fluid valve 1 and the liquid valve 1 are electrically connected to the external control system, and the switching of the opening and closing of each valve is coordinated and controlled by the external control system.

[0032] As Figure 1 The structure and perspective shown are described in detail: The gaseous working medium enters the left side of the main cylinder a1 along the working medium valve a4, pushes the main piston member 301 inside the main cylinder a1 to move rightward, and transmits the thrust to the main piston member 301 inside the main cylinder b2 through the main connecting rod 302 to make it move rightward synchronously, that is, pushes the main piston structure 3 as a whole to move rightward. During this process, the liquid located on the right side of the main cylinder a1 is pressed out by the action of the main piston member 301 inside the main cylinder a1 and flows along the liquid valve a6 to the water inlet end of the turbine 200. At the same time, the gaseous working medium on the right side of the main cylinder b2 that has completed work in the previous stage is compressed and liquefied as the main piston member 301 inside the main cylinder b2 moves rightward, and flows out along the working medium valve b5. The liquid flowing out of the water outlet end of the turbine 200 flows into the left side of the main cylinder b2 along the liquid valve b7. Subsequently, new gaseous working medium is input into the right side of the main cylinder b2 along the working medium valve b5, pushing the main piston member 301 inside the main cylinder b2 to move to the left, and transmitting the thrust to the main piston member 301 inside the main cylinder a1 through the main connecting rod 302 to make it move to the left synchronously, that is, pushing the main piston structure 3 to move to the left as a whole. In this process, the liquid located on the left side of the main cylinder b2 is pressed out by the main piston member 301 inside the main cylinder b2 and flows along the liquid valve b7 to the water inlet end of the water inlet machine. At the same time, the gaseous working medium on the left side of the main cylinder a1 that has completed work in the previous stage is compressed and liquefied as the main piston member 301 inside the main cylinder a1 moves to the left, and flows out along the working medium valve a4. The liquid flowing out of the water outlet end of the turbine 200 flows into the right side of the main cylinder a1 along the liquid valve a6. The above contents are circulated to push the main piston structure 3 to move back and forth, thereby pushing the liquid inside the main cylinder a1 and the main cylinder b2 back and forth, so that the liquid is pressurized and flows toward the water inlet end of the turbine 200 .

[0033] In the second embodiment of the power unit 100 of the present invention, a working fluid valve 1 is provided on both sides of one main cylinder body, and a liquid valve 1 is provided on both sides of the other main cylinder body, that is, one of the main cylinder bodies is only used for expansion work and compression liquefaction of the working fluid, and the other main cylinder body is only used for pressing out and reflux of the liquid. In this embodiment, it is preferred that the main cylinder body provided with the working fluid valve 1 has a larger diameter than the main cylinder body provided with the liquid valve 1, and the diameters of the two main piston members 301 correspond to the inner diameters of the two main cylinder bodies, that is, the diameter of the main piston member 301 inside the main cylinder body provided with the liquid valve 1 is smaller than the main piston member 301 inside the main cylinder body provided with the working fluid valve 1. Based on the two main cylinders with different cylinder diameters, the pressure difference between evaporation and liquefaction can be amplified in a corresponding proportion, greatly expanding the scope of application. When the pressure difference between evaporation and liquefaction is small, after amplification, the main piston 301 inside the main cylinder with a small cylinder diameter can still have a large thrust and can also generate the pressure required for the operation of the turbine 200, so that the liquid can obtain the corresponding high pressure to drive the turbine 200 generator set to operate, and realize the use of a smaller temperature difference. The specific ratio of the diameters of the two main cylinders can be determined according to actual design requirements.

[0034] The power generation method of the low-temperature thermal energy water turbine power generation equipment based on the second embodiment of the power unit 100 includes the following steps: The gaseous working medium enters the interior of one side of the main cylinder body where the working medium valve 1 is located along one of the working medium valves 1, pushes the main piston structure 3 to move as a whole, compresses the gaseous working medium that has completed work inside the other side of the main cylinder body to liquefy it and flows out along the working medium valve 1 at this end, and at the same time drives the liquid inside the other main cylinder body to flow along one of the liquid valves 1 toward the water inlet end of the turbine 200, and in this process, the liquid flowing out of the water outlet end of the turbine 200 enters the interior of the other main cylinder body along another liquid valve 1; The two working fluid valves 1 alternately input gaseous working fluids, circulate the above contents, and push the main piston structure 3 to move back and forth to perform work, thereby reciprocatingly pushing the liquid on both sides of the main cylinder body provided with the liquid valve 1 to flow toward the water inlet end of the turbine 200. Among them, the working fluid valve 1 and the liquid valve 1 are both three-way valves, the heat exchanger includes an evaporator and a condenser, and two interfaces of the working fluid valve 1 are respectively connected to the evaporator and the condenser, and the gaseous working fluid is output along the inside of the evaporator, and the liquefied working fluid flows into the condenser to discharge the heat generated by the liquefaction process. The working fluid valve 1 and the liquid valve 1 are electrically connected to the external control system, and the switching of the opening and closing of each valve is coordinated and controlled by the external control system.

[0035] As Figure 2 The structure and perspective shown are described in detail: The gaseous working medium enters the left side of the main cylinder a1 along the working medium valve a4, pushes the main piston member 301 inside the main cylinder a1 to move rightward, and transmits the thrust to the main piston member 301 inside the main cylinder b2 through the main connecting rod 302 to make it move rightward synchronously, that is, pushes the main piston structure 3 to move rightward as a whole. In this process, the liquid located on the right side of the main cylinder b2 is pressed out by the action of the main piston member 301 inside the main cylinder b2 and flows along the liquid valve b7 to the water inlet end of the turbine 200. At the same time, the gaseous working medium on the right side of the main cylinder a1 that has completed work in the previous stage is compressed and liquefied as the main piston member 301 inside the main cylinder a1 moves rightward, and flows out along the working medium valve b5. The liquid flowing out of the water outlet end of the turbine 200 flows into the left side of the main cylinder b2 along the liquid valve a6. Subsequently, new gaseous working medium is input into the right side of the main cylinder a1 along the working medium valve b5, pushing the main piston member 301 inside the main cylinder a1 to move to the left, and transmitting the thrust to the main piston member 301 inside the main cylinder b1 through the main connecting rod 302 to make it move to the left synchronously, that is, pushing the main piston structure 3 to move to the left as a whole. In this process, the liquid located on the left side of the main cylinder b2 is pressed out by the main piston member 301 inside the main cylinder b2 and flows to the water inlet end of the water inlet machine along the liquid valve a6. At the same time, the gaseous working medium on the left side of the main cylinder a1 that has completed work in the previous stage is compressed and liquefied as the main piston member 301 inside the main cylinder a1 moves to the left, and flows out along the working medium valve a4. The liquid flowing out of the water outlet end of the turbine 200 flows into the right side of the main cylinder b2 along the liquid valve b7. The above contents are circulated to push the main piston structure 3 to move back and forth, thereby pushing the liquid on both sides of the main piston member 301 inside the main cylinder b2 back and forth, so that the liquid is pressurized and flows toward the water inlet end of the turbine 200 .

[0036] In some other embodiments, when one of the main cylinders is provided with a working fluid valve 1 on both sides and the other main cylinder is provided with a liquid valve 1 on both sides, the diameter of the main cylinder provided with the working fluid valve 1 is the same as the diameter of the main cylinder provided with the liquid valve 1. The operating principle of this embodiment is the same as that of the second embodiment.

[0037] In the third embodiment of the present invention, the power unit 100 also includes an auxiliary body, which includes a secondary piston structure 11 and two auxiliary cylinder bodies, wherein a working fluid valve 2 and a working fluid valve 3 are provided on both sides of one of the auxiliary cylinder bodies, and a liquid valve 2 is provided on both sides of the other auxiliary cylinder body, and the working fluid valves 2 are connected to the heat exchanger, and the two working fluid valves 3 are correspondingly connected to the two sides of the main cylinder body provided with the working fluid valve 1, and the liquid valves 2 are correspondingly connected to the water inlet and outlet of the turbine 200 through two water pipes 8.

[0038] The secondary piston structure 11 is the same as the main piston structure 3, and specifically includes two secondary piston parts, which are connected by a secondary connecting rod. The secondary connecting rod is passed through the opposite side of the two secondary cylinder bodies, and the two secondary piston parts are correspondingly arranged inside the two secondary cylinder bodies. During operation, the two sides inside a single secondary cylinder body are separated by a single secondary piston part, and the secondary connecting rod is the force transmission rod between the two secondary piston parts.

[0039] The two working fluid valves 1 alternately input gaseous working fluid into the main cylinder body where they are located to push the main piston structure 3 to move back and forth to do work. After the gaseous working fluid pushes the main piston structure 3 to move and do work, it enters the corresponding side of the auxiliary cylinder body through the working fluid valve 3 on the corresponding side to evaporate and expand twice, pushing the auxiliary piston structure 11 to move in the corresponding direction to do work, driving the liquid in the other auxiliary cylinder body to flow toward the water inlet end of the turbine 200 through the corresponding liquid valve 2, and at the same time, the movement of the auxiliary piston structure 11 compresses the gaseous working fluid on the other side of the auxiliary cylinder body that has completed secondary evaporation and expansion in the previous stage, so that it is liquefied and flows out through the working fluid valve 2 on its side.

[0040] Based on the third embodiment, after the high-temperature and high-pressure gaseous working fluid performs work in the main cylinder, it can enter the auxiliary cylinder to expand adiabatically, release internal energy for secondary action, and the pressure of the gaseous working fluid can be reduced to the set value. This setting method can increase the work done by the gaseous working fluid, and at the same time reduce the pressure required for the gaseous working fluid to be compressed and liquefied, thereby correspondingly reducing the energy loss of the liquefaction stroke, improving the energy utilization efficiency, and thus improving the overall working efficiency of the equipment. And when the main body is the main body of the second embodiment, that is, the diameters of the two main cylinders are different, it is further preferred that the diameters of the two auxiliary cylinders of the auxiliary body are also different, that is, the diameter of the auxiliary cylinder provided with the working fluid valve 2 and the working fluid valve 3 is larger than the auxiliary cylinder provided with the liquid valve 2. When the pressure difference between evaporation and liquefaction is small, it is ensured that the liquid can effectively obtain the corresponding high pressure to drive the turbine 200 generator set to operate, and achieve the utilization of a smaller temperature difference and a more efficient operation.

[0041] In the third embodiment, Figure 4-Figure 6 As shown, it is further preferred that the power unit 100 has two, when the gaseous working medium in one power unit 100 is input into the main cylinder along the working medium valve 1 to push the main piston structure 3 to move and do work, the gaseous working medium that has done work in the main cylinder of the other power unit 100 enters the secondary cylinder along the working medium valve 3 to evaporate and expand for the second time to push the secondary piston structure 11 to move and do work, so that the two power units 100 can operate alternately in a cycle. Ensure that the water inlet end of the turbine 200 can maintain a stable water inlet pressure and a relatively constant flow rate, so that the hydropower generation equipment can always maintain normal and efficient operation.

[0042] Based on the third embodiment being a preferred embodiment of the present invention, the power generation method of the low-temperature thermal energy water turbine power generation equipment based on the preferred embodiment comprises the following steps: In a single power unit 100, the gaseous working medium enters the main cylinder body where the working medium valve 1 is located along one of the working medium valves 1, pushes the main piston structure 3 to move, and drives the liquid in the other main cylinder body to flow along one of the liquid valves 1 toward the water inlet end of the turbine 200. During this process, the liquid flowing out of the water outlet end of the turbine 200 enters the auxiliary cylinder body where the liquid valve 2 is located along one of the liquid valves 2; after the gaseous working medium pushes the main piston structure 3 to move and perform work, it enters the auxiliary cylinder body where the working medium valve 3 is located through one of the working medium valves 3 to evaporate and expand for the second time, pushes the auxiliary piston structure 11 to move and perform work, and drives the liquid in the other auxiliary cylinder body to flow along the aforementioned liquid valve 2 toward the water inlet end of the turbine 200. During this process, the liquid flowing out of the water outlet end of the turbine 200 enters the main cylinder body where the liquid valve 1 is located along another liquid valve 1; then new gaseous working medium enters the working medium valve 1 along another working medium valve 1 Inside the other side of the main cylinder body, the main piston structure 3 is pushed to move in the opposite direction, driving the liquid in the other main cylinder body to flow along the aforementioned other liquid valve 1 toward the water inlet end of the turbine 200. During this process, the liquid flowing out of the water outlet end of the turbine 200 enters the auxiliary cylinder body where the liquid valve 2 is located along the other liquid valve 2; after the gaseous working medium pushes the main piston structure 3 to move in the opposite direction to perform work, it enters the auxiliary cylinder body where the working medium valve 3 is located through the other working medium valve 3 to evaporate and expand for the second time, pushing the auxiliary piston structure 11 to move in the opposite direction to perform work, compressing the gaseous working medium that has completed the secondary evaporation and expansion in the previous stage inside the auxiliary cylinder body to liquefy it and flow out along the working medium valve 2 on its side, and at the same time driving the liquid in the other auxiliary cylinder body to flow along the aforementioned other liquid valve 2 toward the water inlet end of the turbine 200. During this process, the liquid flowing out of the water outlet end of the turbine 200 enters the main cylinder body where the liquid valve 1 is located along one of the liquid valves 1.

[0043] A single power unit 100 cycles the above contents, and two power units 100 cycle and operate alternately. When the gaseous working fluid in one power unit 100 is input into the main cylinder along the corresponding working fluid valve 1 to push the main piston structure 3 to move and do work, the gaseous working fluid that has done work in the main cylinder of the other power unit 100 enters the secondary cylinder along the corresponding working fluid valve 3 to evaporate and expand for a second time to push the secondary piston structure 11 to move and do work.

[0044] Among them, the working fluid valve 1, liquid valve 1 and liquid valve 2 are all three-way valves, the heat exchanger includes an evaporator and a condenser, two interfaces of the working fluid valve 1 are connected to the evaporator and the condenser respectively, the working fluid valve 2 and the working fluid valve 3 are both two-way valves, the working fluid valve 2 is connected to the loop connecting the working fluid valve 1 and the condenser, the gaseous working fluid is output along the inside of the evaporator, and the liquefied working fluid flows into the condenser to discharge the heat generated by the liquefaction process. The water inlet end of the turbine 200 is provided with a water inlet main pipe 18, and the water outlet end is provided with a water outlet main pipe 19. One of the water pipes 8 connected to the liquid valve 1 and the liquid valve 2 is connected to the water inlet main pipe 18, and the other water pipe 8 connected is connected to the water outlet main pipe 19. The working fluid valve 1, the working fluid valve 2, the working fluid valve 3, the liquid valve 1 and the liquid valve 2 are electrically connected to the external control system, and the external control system coordinates the work to realize the opening and closing switching control of each valve in the corresponding stroke stage.

[0045] In this preferred embodiment, the low temperature thermal energy water turbine power generation equipment (two power units 100) is used. Figure 5 The posture under the perspective is explained in detail: The first stage of the journey Figure 7 As shown: in the power unit 100 on the left, the high-temperature and high-pressure gaseous working medium enters the left side of the main cylinder a1 along the working medium valve a4, pushes the main piston member 301 inside the main cylinder a1 to move rightward along the direction of the arrow, and transmits the thrust to the main piston member 301 inside the main cylinder b2 through the main connecting rod 302 to make it move rightward synchronously, that is, the main piston structure 3 moves rightward as a whole, and the liquid inside the main cylinder b2 is pressed out along the liquid valve b7 and enters the water inlet end of the turbine 200 along the water inlet main pipe 18. In this process, the water at the water outlet end of the turbine 200 enters the auxiliary cylinder b10 through the water outlet main pipe 19 along the liquid valve b17; at the same time, in the power unit 100 on the right, the inside of the main cylinder a1 is made in the previous stroke stage. The gaseous working medium after work enters the auxiliary cylinder a9 from the working medium valve three b15 along the direction of the arrow, performs secondary evaporation and expansion work, and pushes the auxiliary piston member inside the auxiliary cylinder a9 to move to the right, and transmits the force to the auxiliary piston member inside the auxiliary cylinder b10 through the auxiliary connecting rod to make it move to the right synchronously, that is, the auxiliary piston structure 11 moves to the right as a whole, and the liquid inside the auxiliary cylinder b10 is pressed out along the liquid valve two a16 and enters the water inlet end of the turbine 200 along the water inlet main pipe 18. At the same time, the gaseous working medium on the right side of the auxiliary cylinder a9 that has completed secondary evaporation and expansion work is compressed and liquefied and flows out along the working medium valve two a12. In this process, the water at the water outlet end of the turbine 200 enters the main cylinder b2 through the water outlet main pipe 19 along the liquid valve one b7. That is, in this stroke stage, the main body in the left power unit 100 and the auxiliary body in the right power unit 100 synchronously work to output liquid, and the auxiliary cylinder b10 in the left power unit 100 and the main cylinder b2 in the right power unit 100 synchronously return liquid.

[0046] The second stage of the journey Figure 8 As shown: in the power unit 100 on the left, the gaseous working medium in the main cylinder a1 after doing work in the previous stroke stage enters the auxiliary cylinder a9 from the working medium valve a14 along the direction of the arrow, performs secondary evaporation and expansion work, pushes the auxiliary piston member in the auxiliary cylinder a9 to move rightward, and transmits the force to the auxiliary piston member in the auxiliary cylinder b10 through the auxiliary connecting rod to make it move rightward synchronously, that is, the auxiliary piston structure 11 moves rightward as a whole, and the liquid in the auxiliary cylinder b10 is pressed out along the liquid valve b17 and enters the water inlet end of the turbine 200 along the water inlet main pipe 18. At the same time, the gaseous working medium on the right side of the auxiliary cylinder a9 that has completed secondary evaporation and expansion work is compressed and liquefied and flows out along the working medium valve b13. In this process, the turbine 2 00 outlet water passes through the outlet main pipe 19 along the liquid valve a6 into the main cylinder b2; at the same time, in the power unit 100 on the right, the high-temperature and high-pressure gaseous working medium enters the right side of the main cylinder a1 along the working medium valve a4, pushing the main piston member 301 inside the main cylinder a1 to move leftward along the direction of the arrow, and transmits the thrust to the main piston member 301 inside the main cylinder b2 through the main connecting rod 302 to make it move leftward synchronously, that is, the main piston structure 3 moves leftward as a whole, and the liquid inside the main cylinder b2 is pressed out along the liquid valve b7 and enters the water inlet end of the turbine 200 along the inlet main pipe 18. In this process, the outlet water of the water outlet end of the turbine 200 passes through the outlet main pipe 19 along the liquid valve b17 into the auxiliary cylinder b10. That is, in this stroke stage, the auxiliary body in the left power unit 100 and the main body in the right power unit 100 synchronously work to output liquid, and the main cylinder b2 in the left power unit 100 and the auxiliary cylinder b10 in the right power unit 100 synchronously return liquid.

[0047] The third stage of the journey Fig. 9As shown: in the power unit 100 on the left, the high-temperature and high-pressure gaseous working medium enters the right side of the main cylinder a1 along the working medium valve b5, pushes the main piston member 301 inside the main cylinder a1 to move leftward along the direction of the arrow, and transmits the thrust to the main piston member 301 inside the main cylinder b2 through the main connecting rod 302 to make it move leftward synchronously, that is, the main piston structure 3 moves leftward as a whole, and the liquid inside the main cylinder b2 is pressed out along the liquid valve a6 and enters the water inlet end of the turbine 200 along the water inlet main pipe 18. In this process, the water at the water outlet end of the turbine 200 enters the auxiliary cylinder b10 through the water outlet main pipe 19 along the liquid valve a16; at the same time, in the power unit 100 on the right, the inside of the main cylinder a1 is made in the previous stroke stage. The gaseous working medium after work enters the auxiliary cylinder a9 from the working medium valve three a14 along the direction of the arrow, performs secondary evaporation and expansion work, and pushes the auxiliary piston member inside the auxiliary cylinder a9 to move to the left, and transmits the force to the auxiliary piston member inside the auxiliary cylinder b10 through the auxiliary connecting rod to make it move to the left synchronously, that is, the auxiliary piston structure 11 moves to the left as a whole, and the liquid inside the auxiliary cylinder b10 is pressed out along the liquid valve two b17 and enters the water inlet end of the turbine 200 along the water inlet main pipe 18. At the same time, the gaseous working medium on the left side of the auxiliary cylinder a9 that has completed secondary evaporation and expansion work is compressed and liquefied and flows out along the working medium valve two b13. In this process, the water at the water outlet end of the turbine 200 enters the main cylinder b2 through the water outlet main pipe 19 along the liquid valve one a6. That is, in this stroke stage, the main body in the left power unit 100 and the auxiliary body in the right power unit 100 synchronously work to output liquid, and the auxiliary cylinder b10 in the left power unit 100 and the main cylinder b2 in the right power unit 100 synchronously return liquid.

[0048] The fourth stage of the journey Fig.10As shown: in the power unit 100 on the left, the gaseous working medium in the main cylinder a1 after doing work in the previous stroke stage enters the auxiliary cylinder a9 from the working medium valve b15 along the direction of the arrow, performs secondary evaporation and expansion work to push the auxiliary piston member in the auxiliary cylinder a9 to move leftward, and transmits the force to the auxiliary piston member in the auxiliary cylinder b10 through the auxiliary connecting rod to make it move leftward synchronously, that is, the auxiliary piston structure 11 moves leftward as a whole, and the liquid in the auxiliary cylinder b10 is pressed out along the liquid valve a16 and enters the water inlet end of the turbine 200 along the water inlet main pipe 18. At the same time, the gaseous working medium on the left side of the auxiliary cylinder a9 that has completed the secondary evaporation and expansion work is compressed and liquefied and flows out along the working medium valve a12. In this process, the turbine 20 0 The water at the outlet end enters the main cylinder b2 along the liquid valve b7 through the outlet main pipe 19; at the same time, in the power unit 100 on the right, the high-temperature and high-pressure gaseous working medium enters the right side of the main cylinder a1 along the working medium valve b5, pushing the main piston member 301 inside the main cylinder a1 to move rightward along the direction of the arrow, and transmits the thrust to the main piston member 301 inside the main cylinder b2 through the main connecting rod 302 to make it move rightward synchronously, that is, the main piston structure 3 moves rightward as a whole, and the liquid inside the main cylinder b2 is pressed out along the liquid valve a6 and enters the water inlet end of the turbine 200 along the inlet main pipe 18. In this process, the water at the outlet end of the turbine 200 enters the auxiliary cylinder b10 through the outlet main pipe 19 along the liquid valve a16. That is, in this stroke stage, the auxiliary body in the left power unit 100 and the main body in the right power unit 100 synchronously work to output liquid, and the main cylinder b2 in the left power unit 100 and the auxiliary cylinder b10 in the right power unit 100 synchronously return liquid.

[0049] The above four stroke stages are cyclically performed, so that the two power units 100 are operated alternately in a cycle, ensuring that the water inlet end of the turbine 200 can maintain a stable water inlet pressure and a relatively constant flow rate, so that the hydropower generation equipment can always maintain normal and efficient operation. Among them, through the pre-setting of the control system, the valves and valve interfaces that need to be passed by the working fluid and liquid in each stroke stage are in an open state, and the valves and valve corresponding interfaces that do not need to be passed by the working fluid and liquid in each stroke stage are kept in a closed state.

[0050] Among them, the main body in a single power unit 100 can be one or more than two, which is selected according to the design requirements. When the number of main bodies in a single power unit 100 is more than two, among the more than two main bodies, all the main cylinder bodies with working fluid valve 1 are connected and run synchronously in parallel, and all the main cylinder bodies with liquid valve 1 are connected and run synchronously in parallel.

[0051] The two main piston members 301 in a single main piston structure 3 are connected by three main connecting rods 302, and the three main connecting rods 302 are arranged equidistantly along the axis of the main piston member 301 to ensure the stability of the main piston structure 3 and to ensure effective transmission of force; when the power unit 100 also includes a sub-body, the two sub-piston members in a single sub-piston structure 11 are connected by three sub-connecting rods, and the three sub-connecting rods are arranged equidistantly along the axis of the sub-piston member to ensure the stability of the main piston structure 3 and to ensure effective transmission of force.

[0052] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0053] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A low temperature thermal energy water turbine power generation equipment, characterized in that: It comprises a power unit (100) and a water turbine (200), wherein the power unit (100) comprises a main body, and the main body comprises a main piston structure (3) and two main cylinder bodies; One side of the two main cylinders is provided with a working fluid valve 1, and the other side is provided with a liquid valve 1, or one of the main cylinders is provided with a working fluid valve 1 on both sides, and the other main cylinder is provided with a liquid valve 1 on both sides; The working fluid valve 1 is used to be connected to the heat exchanger, and the liquid valve 1 is connected to the water inlet and the water outlet of the turbine (200) via two water pipes (8); The main piston structure (3) comprises two main piston components (301), the two main piston components (301) are connected via a main connecting rod (302), the main connecting rod (302) is arranged on opposite sides of two main cylinder bodies, and the two main piston components (301) are arranged inside the two main cylinder bodies respectively; two working fluid valves alternately input gaseous working fluid into the inside of the main cylinder bodies, thereby driving the main piston structure (3) to reciprocate as a whole to perform work, and driving the liquid inside the corresponding main cylinder body to flow toward the water inlet end of the turbine (200) through the corresponding liquid valve.

2. The low-temperature thermal water turbine power generation equipment according to claim 1, characterized in that: When one side of the two main cylinder bodies is provided with a working medium valve 1 and the other side is provided with a liquid valve 1, the diameters of the two main cylinder bodies are the same, and the two sides of the two main cylinder bodies with the same valve are arranged opposite to each other.

3. The low-temperature thermal water turbine power generation equipment according to claim 1, characterized in that: When one of the main cylinder bodies is provided with a working fluid valve 1 on both sides and the other main cylinder body is provided with a liquid valve 1 on both sides, the main cylinder body provided with the working fluid valve 1 has a larger diameter than the main cylinder body provided with the liquid valve 1, and the diameters of the two main piston members (301) correspond to the inner diameters of the two main cylinder bodies.

4. The low-temperature thermal water turbine power generation equipment according to claim 1, characterized in that: When one of the main cylinder bodies is provided with a working fluid valve 1 on both sides and the other main cylinder body is provided with a liquid valve 1 on both sides, the diameter of the main cylinder body provided with the working fluid valve 1 is the same as the diameter of the main cylinder body provided with the liquid valve 1.

5. The low-temperature thermal water turbine power generation equipment according to claim 3 or 4, characterized in that: The power unit (100) further comprises an auxiliary body, the auxiliary body comprising an auxiliary piston structure (11) and two auxiliary cylinder bodies, one of the auxiliary cylinder bodies being provided with a second working fluid valve and a third working fluid valve on both sides, and the other auxiliary cylinder body being provided with a second liquid valve on both sides, the second working fluid valves being used to connect to a heat exchanger, the two third working fluid valves being correspondingly connected to the two sides of the main cylinder body provided with the first working fluid valve, and the second liquid valves being correspondingly connected to the water inlet and the water outlet of the turbine (200) via two water pipes (8); The auxiliary piston structure (11) comprises two auxiliary piston parts, the two auxiliary piston parts are connected by an auxiliary connecting rod, the auxiliary connecting rod is arranged on opposite sides of the two auxiliary cylinder bodies, and the two auxiliary piston parts are correspondingly arranged inside the two auxiliary cylinder bodies; The two working fluid valves 1 alternately input gaseous working fluid into the interior of the main cylinder body where they are located, so as to drive the main piston structure (3) to move back and forth to perform work. After the gaseous working fluid drives the main piston structure (3) to move and perform work, it enters the interior of the corresponding side of the auxiliary cylinder body through the working fluid valve 3 on the corresponding side to evaporate and expand for a second time, thereby driving the auxiliary piston structure (11) to move in the corresponding direction, driving the liquid in the other auxiliary cylinder body to flow toward the water inlet end of the turbine (200) through the corresponding liquid valve 2. At the same time, the movement of the auxiliary piston structure (11) compresses the gaseous working fluid on the other side of the auxiliary cylinder body that has completed secondary evaporation and expansion in the previous stage, so that it is liquefied and flows out through the working fluid valve 2 on the side where it is located.

6. The low-temperature thermal water turbine power generation equipment according to claim 5, characterized in that: The power unit (100) has two units, wherein when the gaseous working fluid in one of the power units (100) is input into the main cylinder along working fluid valve 1 to push the main piston structure (3) to move and perform work, the gaseous working fluid that has performed work in the main cylinder of the other power unit (100) enters the secondary cylinder along working fluid valve 3 to evaporate and expand for a second time to push the secondary piston structure (11) to move and perform work, so that the two units can operate in a continuous cycle and alternately.

7. The low-temperature thermal water turbine power generation equipment according to claim 6, characterized in that: The number of main bodies in a single power unit (100) is more than two, and among the more than two main bodies, all main cylinder bodies provided with working fluid valve 1 are connected in parallel and operate synchronously, and all main cylinder bodies provided with liquid valve 1 are connected in parallel and operate synchronously.

8. A method for generating electricity based on the low-temperature thermal water turbine generator set according to claim 2, characterized in that: The following steps are involved: The gaseous working medium enters through the working medium valve 1 of one of the main cylinders, pushes the main piston structure (3) to move, and drives the liquid inside the main cylinder to flow along the corresponding liquid valve 1 toward the water inlet end of the water turbine (200). At the same time, the main piston structure (3) compresses the gaseous working medium that has completed work inside the other main cylinder to liquefy it and flow out through the working medium valve 1. In this process, the liquid flowing out of the water outlet end of the water turbine (200) enters the other main cylinder through the corresponding liquid valve 1. The working medium valves of the two main cylinders alternately input gaseous working medium, circulate the above contents, and push the main piston structure (3) to move back and forth, thereby reciprocatingly pushing the liquid in the main cylinder to flow toward the water inlet end of the turbine (200).

9. A method for generating electricity based on the low-temperature thermal water turbine power generation equipment according to claim 3 or 4, characterized in that: The following steps are involved: The gaseous working medium enters the interior of one side of the main cylinder body where the working medium valve 1 is located along one of the working medium valves 1, pushes the main piston structure (3) to move, compresses the gaseous working medium that has completed work inside the other side of the main cylinder body to liquefy it and flows out along the working medium valve 1 at this end, and at the same time drives the liquid inside the other main cylinder body to flow along one of the liquid valves 1 toward the water inlet end of the turbine (200), and in this process, the liquid flowing out of the water outlet end of the turbine (200) enters the interior of the other main cylinder body along the other liquid valve 1; The two working medium valves 1 alternately input gaseous working medium, circulate the above contents, and push the main piston structure (3) to move back and forth, thereby reciprocatingly pushing the liquid on both sides of the main cylinder body provided with the liquid valve 1 to flow toward the water inlet end of the turbine (200).

10. A method for generating electricity based on the low-temperature thermal water turbine power generation equipment according to claim 6, characterized in that: The following steps are involved: In a single power unit (100), a gaseous working medium enters the interior of a main cylinder body where the working medium valve 1 is located along one of the working medium valves 1, pushes the main piston structure (3) to move, and drives the liquid in another main cylinder body to flow along one of the liquid valves 1 toward the water inlet end of the turbine (200). During this process, the liquid flowing out of the water outlet end of the turbine (200) enters the auxiliary cylinder body where the liquid valve 2 is located along one of the liquid valves 2; after the gaseous working medium pushes the main piston structure (3) to move and perform work, it enters the auxiliary cylinder body where the working medium valve 3 is located through one of the working medium valves 3 to evaporate and expand for the second time, pushes the auxiliary piston structure (11) to move, and drives the liquid in another auxiliary cylinder body to flow along the aforementioned liquid valve 2 toward the water inlet end of the turbine (200). During this process, the liquid flowing out of the water outlet end of the turbine (200) enters the main cylinder body where the liquid valve 1 is located along another liquid valve 1; then new gaseous working medium enters the working medium valve 1 along another working medium valve 1 Inside the other side of the main cylinder body where it is located, the main piston structure (3) is pushed to move in the opposite direction, driving the liquid in the other main cylinder body to flow along the aforementioned other liquid valve 1 toward the water inlet end of the turbine (200). During this process, the liquid flowing out of the water outlet end of the turbine (200) enters the auxiliary cylinder body where the liquid valve 2 is located along the other liquid valve 2; after the gaseous working medium pushes the main piston structure (3) to move in the opposite direction to perform work, it enters the auxiliary cylinder body where the working medium valve 3 is located through the other working medium valve 3 to evaporate and expand for the second time, pushing the auxiliary piston structure (11) to move in the opposite direction, compressing the gaseous working medium that has completed the secondary evaporation and expansion in the auxiliary cylinder body in the previous stage to liquefy it and flow out along the working medium valve 2 on the side where it is located, and at the same time driving the liquid in the other auxiliary cylinder body to flow along the aforementioned other liquid valve 2 toward the water inlet end of the turbine (200). During this process, the liquid flowing out of the water outlet end of the turbine (200) enters the main cylinder body where the liquid valve 1 is located along one of the liquid valves 1; A single power unit (100) circulates the above contents, and two power units (100) circulate and operate alternately, wherein when the gaseous working fluid in one power unit (100) is input into the main cylinder along the corresponding working fluid valve 1 to push the main piston structure (3) to move and perform work, the gaseous working fluid that has performed work in the main cylinder of the other power unit (100) enters the secondary cylinder along the corresponding working fluid valve 3 to evaporate and expand for a second time to push the secondary piston structure (11) to move and perform work.

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