A temperature difference power generation system based on rankine cycle and a power generation capacity adjusting method thereof

Abstract

The application discloses a temperature difference energy power generation system based on a Rankine cycle and a power generation capacity adjusting method thereof. The temperature difference energy power generation system comprises a working medium circulating pump, a working medium vaporizer, a generator set, a working medium condenser, a working medium buffer tank, a flow adjusting device, a pressure adjusting device, a liquid level control assembly and a control unit. The working medium circulating pump, the working medium vaporizer, the generator set, the condenser and the working medium buffer tank are sequentially connected with each other to form a working medium circulating loop. The flow adjusting device and the pressure adjusting device are arranged between the working medium circulating pump and the working medium vaporizer. The liquid level control assembly is arranged on the working medium vaporizer. The flow adjusting device, the pressure adjusting device and the liquid level control assembly are respectively in communication connection with the control unit. Compared with the prior art, the application can be applicable to different power generation capacity working conditions and can ensure that key equipment can stably operate under different working conditions, thereby improving the reliability of the temperature difference energy power generation system under fluctuating power generation capacity working conditions and widening the application range of the temperature difference energy power generation system.

Description

Technical Field

[0001] This invention relates to the field of thermoelectric power generation technology, and in particular to a thermoelectric power generation system based on the Rankine cycle and a method for adjusting the power generation thereon. Background Technology

[0002] Thermoelectric power generation refers to the technology of generating electricity by utilizing the thermal energy caused by the temperature difference between a heat source and a cold source. The basic principle of thermoelectric power generation is to use a heat source to heat certain low-boiling-point working fluids to vaporize them, thereby driving a turbine and a generator to generate electricity. The working fluid vapor output from the turbine outlet is cooled and condensed by a cold source and then transported to an evaporator by a working fluid booster pump for vaporization and circulation to participate in power generation.

[0003] Most existing thermoelectric power generation devices are designed for specific operating conditions, and their ability to adapt to fluctuations in operating conditions is poor or their response time is short. Under fluctuating operating conditions, key heat exchange equipment may suffer damage to the turbine generator set due to the incomplete vaporization of the working fluid, and the device may need to be shut down for modification. Therefore, they cannot be used in application scenarios with frequent changes in power generation in the long term. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the existing technology by providing a thermoelectric power generation system based on the Rankine cycle and a method for adjusting its power generation. This system is applicable to different power generation conditions and ensures that key equipment can operate stably under different conditions, thereby improving the reliability of the thermoelectric power generation system under fluctuating power generation conditions and broadening the applicability of the thermoelectric power generation system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a thermoelectric power generation system based on the Rankine cycle, comprising a working fluid circulation pump, a working fluid vaporizer, a generator set, a working fluid condenser, a working fluid buffer tank, a flow regulating device, a pressure regulating device, a liquid level control component, and a control unit. The outlet of the working fluid circulation pump is connected to the working fluid inlet of the working fluid vaporizer, the working fluid outlet of the working fluid vaporizer is connected to the working fluid inlet of the generator set, the working fluid outlet of the generator set is connected to the working fluid inlet of the condenser, the outlet and inlet of the working fluid buffer tank are respectively connected to the inlet of the working fluid circulation pump and the working fluid outlet of the working fluid condenser, the working fluid buffer tank stores circulating working fluid, the flow regulating device and the pressure regulating device are disposed on the connecting pipeline of the working fluid circulation pump and the working fluid vaporizer, the liquid level control component is disposed on the working fluid vaporizer, and the flow regulating device, the pressure regulating device, and the liquid level control component are respectively communicatively connected to the control unit.

[0007] Preferably, the flow regulating device includes a flow regulating valve and a flow control component connected to each other, and the flow control component is communicatively connected to the flow regulating valve and the control unit, respectively.

[0008] Preferably, the pressure regulating device includes a pressure regulating valve and a pressure control component connected to each other, and the pressure control component is communicatively connected to the pressure regulating valve and the control unit, respectively.

[0009] Preferably, the working fluid vaporizer includes a shell and a heat exchange component, the heat exchange component is disposed in the lower middle part of the shell, the top and bottom of the shell have a working fluid outlet and a working fluid inlet respectively, and the heat exchange component has a heat source inlet and a heat source outlet.

[0010] Preferably, the heat exchange component is a tube bundle or a plate bundle.

[0011] Preferably, the tube bundle and the plate bundle have external or internal extension components.

[0012] Preferably, the circulating working fluid includes a single working fluid and / or a mixture of working fluids.

[0013] Preferably, the working fluid circulation pump is a variable frequency pump.

[0014] In a second aspect, the present invention provides a method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in the first aspect above, comprising the following steps:

[0015] Calculate the vaporization pressure of the working fluid under the new operating condition and the amount of working fluid vaporization required for circulation under the corresponding conditions based on the required adjustment of power generation.

[0016] The required liquid level and working fluid input pressure of the vaporizer are determined based on the vaporization pressure of the working fluid under the new operating conditions and the amount of working fluid vaporization required for circulation under the corresponding conditions.

[0017] Input the working fluid input pressure and liquid level required by the working fluid vaporizer under the new operating conditions into the control unit;

[0018] The control unit sends a control signal to the pressure regulating device to adjust the working fluid input pressure of the working fluid vaporizer according to the working fluid input pressure required by the working fluid vaporizer under the new operating conditions, ensuring that the vaporization pressure of the working fluid vaporizer meets the requirements of the new operating conditions. At the same time, the liquid level regulating device transmits the liquid level signal in the working fluid vaporizer to the control unit in real time. The control unit determines the working fluid input flow rate of the working fluid vaporizer based on the difference between the real-time liquid level in the working fluid vaporizer and the liquid level required in the working fluid vaporizer under the new operating conditions. The control unit sends a control signal to the flow regulating device to adjust the working fluid input flow rate of the working fluid vaporizer, thereby controlling the liquid level of the working fluid vaporizer and ensuring that the vaporization amount of the working fluid vaporizer meets the requirements of the new operating conditions, thus realizing the adjustment of the system's power generation.

[0019] Thirdly, the present invention provides another method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in the first aspect above, comprising the following steps:

[0020] Calculate the vaporization pressure of the working fluid under the new operating condition and the amount of working fluid vaporization required for circulation under the corresponding conditions based on the required adjustment of power generation.

[0021] The required input pressure of the working fluid for the vaporizer is determined based on the vaporization pressure of the working fluid under the new operating conditions.

[0022] The required working fluid input pressure and vaporization rate for the working fluid vaporizer under the new operating conditions are respectively input to the control unit and the working fluid circulation pump;

[0023] The control unit sends a control signal to the pressure regulating device to adjust the working fluid input pressure of the working fluid vaporizer according to the working fluid input pressure required by the working fluid vaporizer under the new operating conditions, ensuring that the vaporization pressure of the working fluid vaporizer meets the requirements of the new operating conditions. At the same time, the liquid level regulating device transmits the liquid level signal in the working fluid vaporizer to the working fluid circulation pump in real time. The working fluid circulation pump adjusts its frequency according to the working fluid vaporization amount required by the working fluid vaporizer under the new operating conditions and the real-time liquid level in the working fluid vaporizer to adjust the working fluid input flow rate of the working fluid vaporizer, thereby controlling the working fluid vaporization amount and ensuring that the vaporization amount of the working fluid vaporizer meets the requirements of the new operating conditions, thus realizing the adjustment of the system's power generation.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] (1) This invention has good adaptability to fluctuating operating conditions, and solves the common pain point of poor adaptability of new energy devices to fluctuating operating conditions;

[0026] (2) Under fluctuating operating conditions, the present invention can ensure that the working fluid vaporizer completely vaporizes the working fluid, ensuring that the thermoelectric power generation system can operate stably and safely for a long period of time.

[0027] (3) The present invention can generate electricity by controlling the liquid level adjustment device of the working fluid vaporizer. In actual use, the power generation can be flexibly adjusted according to the power demand or conditions of the place of use. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. It should be noted that in all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0029] Figure 1 This is a schematic diagram of the overall structure of the thermoelectric power generation system based on the Rankine cycle described in this embodiment of the invention.

[0030] Figure 2This is a schematic diagram of the overall structure of the working fluid vaporizer in the thermoelectric power generation system based on the Rankine cycle described in this embodiment of the invention.

[0031] In the picture:

[0032] 1. Working fluid circulation pump; 2. Working fluid vaporizer; 21. Outer shell; 22. Heat exchange components; 3. Generator set; 4. Working fluid condenser; 5. Working fluid buffer tank; 6. Flow regulating device; 61. Flow regulating valve; 62. Flow control assembly; 7. Pressure regulating device; 71. Pressure regulating valve; 72. Pressure control assembly; 8. Liquid level control assembly; 9. Control unit. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., used to define components are merely for the convenience of distinguishing the aforementioned components. Unless otherwise stated, these terms have no special meaning and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Most existing thermoelectric power generation devices are designed for specific operating conditions, exhibiting poor adaptability or short response time to fluctuations in operating conditions. Critical heat exchange equipment may suffer damage to the turbine generator unit due to incomplete vaporization of the working fluid under fluctuating operating conditions, necessitating system shutdown and modification. Therefore, they are unsuitable for long-term applications with frequent power generation fluctuations. This invention provides a Rankine cycle-based thermoelectric power generation system and its power generation adjustment method, which is applicable to different power generation conditions and ensures stable operation of key equipment under varying conditions. This improves the reliability of the thermoelectric power generation system under fluctuating power generation conditions and broadens its applicability.

[0037] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0038] Example 1

[0039] like Figure 1 As shown, this embodiment of the invention provides a thermoelectric power generation system based on the Rankine cycle, including a working fluid circulation pump 1, a working fluid vaporizer 2, a generator set 3, a working fluid condenser 4, a working fluid buffer tank 5, a flow regulating device 6, a pressure regulating device 7, a level control component 8, and a control unit 9. The outlet of the working fluid circulation pump 1 is connected to the working fluid inlet of the working fluid vaporizer 2, the working fluid outlet of the working fluid vaporizer 2 is connected to the working fluid inlet of the generator set 3, the working fluid outlet of the generator set 3 is connected to the working fluid inlet of the working fluid condenser 4, and the working fluid buffer tank 5... The outlet and inlet are respectively connected to the inlet of the working fluid circulation pump 1 and the working fluid outlet of the working fluid condenser 4. The working fluid buffer tank 5 is used to store the circulating working fluid and to perform gas-liquid separation of the circulating working fluid. The working fluid buffer tank 5 must be able to hold the total amount of circulating working fluid in the entire closed system. The flow regulating device 6 and the pressure regulating device 7 are installed on the connecting pipeline between the working fluid circulation pump 1 and the working fluid vaporizer 2. The liquid level control component 8 is installed on the working fluid vaporizer 2. The flow regulating device 6, the pressure regulating device 7 and the liquid level control component 8 are respectively connected to the control unit 9 for communication.

[0040] In this embodiment, the selection of generator set 3 should take into account the maximum power generation capacity under fluctuating operating conditions and the most demanding operating conditions. The most demanding operating conditions include, but are not limited to, the highest temperature, the highest pressure, the lowest temperature, and the lowest pressure.

[0041] Preferably, the generator set 3 in this embodiment is a turbine generator. Of course, in other specific embodiments of the present invention, the generator set 3 may also be other units that can be used for thermoelectric power generation.

[0042] In this embodiment, the circulating working fluid in the working fluid buffer tank 5 is pressurized by the working fluid circulation pump 1 and then sequentially fed into the working fluid vaporizer 2 via the flow regulating device 6 and the pressure regulating device 7. After entering the working fluid vaporizer 2, the circulating working fluid is vaporized under the action of an external heat source. The vaporized circulating working fluid is fed into the generator set 3 for power generation and then output by the generator set 3. The gaseous circulating working fluid output by the generator set 3 is fed into the working fluid condenser 4 for condensation and liquefaction. After the circulating working fluid is condensed into a liquid state, it enters the working fluid buffer tank 5 and is pressurized by the working fluid circulation pump 1 before being recycled for subsequent power generation.

[0043] The flow regulating device 6 controls the liquid level in the working fluid vaporizer 2 by adjusting the working fluid input flow rate, thereby controlling the vaporization rate of the working fluid vaporizer 2. The pressure regulating device 7 controls the vaporization pressure of the working fluid vaporizer 2 by adjusting the working fluid input pressure. Therefore, in this embodiment, the vaporization rate and vaporization pressure of the working fluid vaporizer 2 can be adjusted by the flow regulating device 6 and the pressure regulating device 7, achieving flexible adjustment of power generation. This is suitable for different power generation conditions and ensures stable operation of key equipment under different conditions, thereby improving the reliability of the thermoelectric power generation system under fluctuating power generation conditions and broadening the applicability of the thermoelectric power generation system.

[0044] Specifically, the flow regulating device 6 includes a flow regulating valve 61 and a flow control component 62 connected to each other. The flow control component 62 is communicatively connected to the flow regulating valve 61 and the control unit 9, respectively.

[0045] The pressure regulating device 7 includes a pressure regulating valve 71 and a pressure control component 72 connected to each other. The pressure control component 72 is communicatively connected to the pressure regulating valve 71 and the control unit 9, respectively.

[0046] It is understood that the flow regulating device 6 and pressure regulating device 7 in this embodiment can also be other conventional control valves or instruments, as long as they can adjust the working fluid input flow and pressure of the working fluid vaporizer 2.

[0047] like Figure 2 As shown, in some optional embodiments, the working fluid vaporizer 2 includes a shell 21 and a heat exchange component 22. The heat exchange component 22 is disposed in the lower middle part of the shell 21. The top and bottom of the shell 21 have a working fluid outlet and a working fluid inlet, respectively, and the heat exchange component 22 has a heat source inlet and a heat source outlet. The upper part of the internal space of the shell 21 is a gas space, and the lower part is a liquid space.

[0048] In this embodiment, after the liquid circulating working fluid is input into the working fluid vaporizer 2, the liquid circulating working fluid is first vaporized into a gaseous state under the heating of the heat exchange component 22. The vaporized circulating working fluid rises to the gas space at the top of the inner side of the outer shell 21 for preliminary gas-liquid separation. The gaseous circulating working fluid in the gas space at the top of the inner side of the outer shell 21 flows out through the working fluid outlet, and the liquid droplets of the circulating working fluid in the gas space at the top of the inner side of the outer shell 21 fall into the liquid space at the bottom of the inner side of the outer shell 21 to continue vaporizing.

[0049] Among them, the heat exchange component 22 should have the ability to completely vaporize the working fluid under the maximum power generation condition when it is fully immersed in the liquid circulating working fluid.

[0050] Preferably, the heat exchange component 22 includes, but is not limited to, tube bundles, plate bundles, and tube bundles or plate bundles with external or internal extended spaces such as fins and nail heads.

[0051] Furthermore, the circulating working fluid includes a single working fluid and / or a mixture of working fluids.

[0052] Preferably, the circulating working fluid in this embodiment is ammonia and / or Freon.

[0053] Furthermore, the working fluid circulation pump 1 is a variable frequency pump, and the frequency converter of the variable frequency pump is communicatively connected to the control unit 9.

[0054] In this embodiment, a variable frequency pump is selected as the working fluid circulation pump 1. When adjusting the power generation, the working fluid input flow rate of the working fluid vaporizer 2 can be adjusted directly by adjusting the frequency of the working fluid circulation pump 1, without having to adjust the working fluid input flow rate of the working fluid vaporizer 2 through the flow regulating device 6.

[0055] Example 2

[0056] This invention provides a method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in Embodiment 1, comprising the following steps:

[0057] S1. Calculate the vaporization pressure of the working fluid under the new operating condition and the amount of working fluid vaporization required for circulation under the corresponding conditions based on the required adjustment of power generation.

[0058] S2. Determine the required liquid level and working fluid input pressure of the vaporizer based on the vaporization pressure of the working fluid under the new operating conditions and the amount of working fluid vaporization required for circulation under the corresponding conditions;

[0059] S3. Input the working fluid input pressure and liquid level required by the working fluid vaporizer 2 under the new operating conditions into the control unit 9;

[0060] S4. Control unit 9 sends a control signal to pressure regulating device 7 to adjust the working fluid input pressure of working fluid vaporizer 2 according to the working fluid input pressure required by working fluid vaporizer 2 under the new operating condition, ensuring that the vaporization pressure of working fluid vaporizer 2 meets the requirements of the new operating condition. At the same time, liquid level regulating device transmits the liquid level signal in working fluid vaporizer 2 to control unit 9 in real time. Control unit 9 determines the working fluid input flow rate of working fluid vaporizer 2 based on the difference between the real-time liquid level in working fluid vaporizer 2 and the liquid level required in working fluid vaporizer 2 under the new operating condition. Control unit 9 sends a control signal to flow regulating device 6 to adjust the working fluid input flow rate of working fluid vaporizer 2, thereby controlling the liquid level of working fluid vaporizer 2 and ensuring that the vaporization amount of working fluid vaporizer 2 meets the requirements of the new operating condition, thus realizing the adjustment of the system power generation.

[0061] Example 3

[0062] This invention provides another method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in Embodiment 1, comprising the following steps:

[0063] S1. Calculate the vaporization pressure of the working fluid under the new operating condition and the amount of working fluid vaporization required for circulation under the corresponding conditions based on the required adjustment of power generation.

[0064] S2. Determine the required liquid level and working fluid input pressure for the vaporizer based on the vaporization pressure of the working fluid under the new operating conditions;

[0065] S3. Input the required working fluid input pressure and vaporization amount of the working fluid vaporizer 2 under the new operating conditions into the control unit 9 and the working fluid circulation pump 1, respectively;

[0066] S4. Control unit 9 sends a control signal to pressure regulating device 7 to adjust the working fluid input pressure of working fluid vaporizer 2 according to the working fluid input pressure required by working fluid vaporizer 2 under the new operating condition, so as to ensure that the vaporization pressure of working fluid vaporizer 2 meets the requirements of the new operating condition. At the same time, liquid level regulating device transmits the liquid level signal in working fluid vaporizer 2 to working fluid circulation pump 1 in real time. Working fluid circulation pump 1 adjusts its frequency according to the working fluid vaporization amount required by working fluid vaporizer 2 under the new operating condition and the real-time liquid level in working fluid vaporizer 2 to adjust the working fluid input flow of working fluid vaporizer 2, so as to control the vaporization amount and ensure that the vaporization amount of working fluid vaporizer 2 meets the requirements of the new operating condition, thereby realizing the adjustment of the power generation of the system.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle, the thermoelectric power generation system comprising a working fluid circulation pump (1), a working fluid vaporizer (2), a generator set (3), a working fluid condenser (4), a working fluid buffer tank (5), a flow regulating device (6), a pressure regulating device (7), a liquid level control component (8), and a control unit (9), wherein the outlet of the working fluid circulation pump (1) is connected to the working fluid inlet of the working fluid vaporizer (2), the working fluid outlet of the working fluid vaporizer (2) is connected to the working fluid inlet of the generator set (3), and the working fluid outlet of the generator set (3) is connected to the working fluid condenser (4). The working fluid inlet, the outlet and inlet of the working fluid buffer tank (5) are respectively connected to the inlet of the working fluid circulation pump (1) and the working fluid outlet of the working fluid condenser (4), the working fluid buffer tank (5) stores circulating working fluid, the flow regulating device (6) and the pressure regulating device (7) are arranged on the connecting pipeline of the working fluid circulation pump (1) and the working fluid vaporizer (2), the liquid level control component (8) is arranged on the working fluid vaporizer (2), the flow regulating device (6), the pressure regulating device (7) and the liquid level control component (8) are respectively communicatively connected to the control unit (9), characterized in that, The method for adjusting power generation includes the following steps: Calculate the vaporization pressure of the working fluid under the new operating condition and the amount of working fluid vaporization required for circulation under the corresponding conditions based on the required adjustment of power generation. The required liquid level and working fluid input pressure of the vaporizer are determined based on the vaporization pressure of the working fluid under the new operating conditions and the amount of working fluid vaporization required for circulation under the corresponding conditions. Input the required working fluid input pressure and liquid level to the control unit (9) of the working fluid vaporizer (2) under the new operating conditions; The control unit (9) sends a control signal to the pressure regulating device (7) to adjust the working fluid input pressure of the working fluid vaporizer (2) according to the working fluid input pressure required by the working fluid vaporizer (2) under the new working condition, so as to ensure that the vaporization pressure of the working fluid vaporizer (2) meets the requirements of the new working condition. At the same time, the liquid level regulating device transmits the liquid level signal in the working fluid vaporizer (2) to the control unit (9) in real time. The control unit (9) determines the working fluid input flow rate of the working fluid vaporizer (2) according to the difference between the real-time liquid level in the working fluid vaporizer (2) and the liquid level required in the working fluid vaporizer (2) under the new working condition. The control unit (9) sends a control signal to the flow regulating device (6) to adjust the working fluid input flow rate of the working fluid vaporizer (2) to achieve the purpose of controlling the liquid level of the working fluid vaporizer (2) and ensuring that the vaporization amount of the working fluid vaporizer (2) meets the requirements of the new working condition, thereby realizing the adjustment of the power generation of the system.

2. The method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in claim 1, characterized in that, The flow regulating device (6) includes a flow regulating valve (61) and a flow control component (62) connected to each other. The flow control component (62) is communicatively connected to the flow regulating valve (61) and the control unit (9).

3. The method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in claim 1, characterized in that, The pressure regulating device (7) includes a pressure regulating valve (71) and a pressure control component (72) connected to each other. The pressure control component (72) is communicatively connected to the pressure regulating valve (71) and the control unit (9).

4. The method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in claim 1, characterized in that, The working fluid vaporizer (2) includes a shell (21) and a heat exchange component (22). The heat exchange component (22) is located in the lower middle part of the shell (21). The top and bottom of the shell (21) have a working fluid outlet and a working fluid inlet, respectively. The heat exchange component (22) has a heat source inlet and a heat source outlet.

5. The method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in claim 4, characterized in that, The heat exchange component (22) is a tube bundle or a plate bundle.

6. The method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in claim 5, characterized in that, The tube bundle and the plate bundle have external or internal extension components.

7. The method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle as described in claim 1, characterized in that, The circulating working medium includes a single working medium and / or a mixture of working media.

8. A method for adjusting the power generation of a thermoelectric power generation system based on the Rankine cycle, the thermoelectric power generation system comprising a working fluid circulation pump (1), a working fluid vaporizer (2), a generator set (3), a working fluid condenser (4), a working fluid buffer tank (5), a flow regulating device (6), a pressure regulating device (7), a liquid level control component (8), and a control unit (9), wherein the outlet of the working fluid circulation pump (1) is connected to the working fluid inlet of the working fluid vaporizer (2), the working fluid outlet of the working fluid vaporizer (2) is connected to the working fluid inlet of the generator set (3), and the working fluid outlet of the generator set (3) is connected to the working fluid inlet of the working fluid condenser (4), the working fluid... The outlet and inlet of the working fluid buffer tank (5) are respectively connected to the inlet of the working fluid circulation pump (1) and the working fluid outlet of the working fluid condenser (4). The working fluid buffer tank (5) stores circulating working fluid. The flow regulating device (6) and the pressure regulating device (7) are installed on the connecting pipeline between the working fluid circulation pump (1) and the working fluid vaporizer (2). The liquid level control component (8) is installed on the working fluid vaporizer (2). The flow regulating device (6), the pressure regulating device (7) and the liquid level control component (8) are respectively communicatively connected to the control unit (9). The working fluid circulation pump (1) is a variable frequency pump. The method for adjusting power generation includes the following steps: Calculate the vaporization pressure of the working fluid under the new operating condition and the amount of working fluid vaporization required for circulation under the corresponding conditions based on the required adjustment of power generation. The required input pressure of the working fluid for the vaporizer is determined based on the vaporization pressure of the working fluid under the new operating conditions. The working fluid input pressure and vaporization amount required by the working fluid vaporizer (2) under the new working condition are respectively input into the control unit (9) and the working fluid circulation pump (1); The control unit (9) sends a control signal to the pressure regulating device (7) to adjust the working fluid input pressure of the working fluid vaporizer (2) according to the working fluid input pressure required by the working fluid vaporizer (2) under the new working condition, so as to ensure that the vaporization pressure of the working fluid vaporizer (2) meets the requirements of the new working condition. At the same time, the liquid level regulating device transmits the liquid level signal in the working fluid vaporizer (2) to the working fluid circulation pump (1) in real time. The working fluid circulation pump (1) adjusts its frequency according to the working fluid vaporization amount required by the working fluid vaporizer (2) under the new working condition and the real-time liquid level in the working fluid vaporizer (2) to adjust the working fluid input flow of the working fluid vaporizer (2), so as to achieve the purpose of controlling the vaporization amount and ensuring that the vaporization amount of the working fluid vaporizer (2) meets the requirements of the new working condition, thereby realizing the adjustment of the power generation of the system.

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