Method and system for recycling process heat of nuclear power plant

Abstract

The invention discloses a method and a system for recycling process heat of a nuclear power plant, and relates to the technical field of heat recovery. Waste heat is transferred to a working medium through a heat exchanger, and working medium steam is generated; the working medium steam is guided into a turbine to do work through expansion so as to generate electricity or provide power; working medium steam passing through the turbine is condensed into liquid, and the liquid returns to the heat exchanger to form closed-loop circulation; working parameters of the heat exchanger, the turbine and the condenser are controlled, and the heat recovery efficiency is improved. Through combination of equipment such as the heat exchanger, the turbine and the condenser, effective conversion and utilization of waste heat are achieved, and the economical efficiency and reliability of the system are improved. By monitoring and controlling the working parameters of the heat exchanger, the turbine and the condenser, the heat recovery efficiency and the system stability are optimized, and the operation performance of the system is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat recovery, and in particular to a method and system for recovering process heat in a nuclear power plant. Background Art

[0002] In the process of nuclear power generation, the thermal efficiency of nuclear power plants is relatively low, and a large amount of heat is released into the environment in the reactor cooling system and steam generator, which is not fully utilized. If this part of heat can be effectively recovered and reused, it can not only improve the overall energy efficiency of nuclear power plants, but also provide clean energy for surrounding industrial heating or civil heating, thereby enhancing the economy and environmental friendliness of nuclear energy. Therefore, it is particularly important to develop an efficient, safe and economically feasible method for recovering process heat in nuclear power plants.

[0003] Some existing heat recovery technologies, such as heat pump technology, waste heat boilers, absorption chillers, etc., can recycle and utilize heat to a certain extent, but they often have problems such as low efficiency, large equipment investment, high operating costs, and limited scope of application. Especially in nuclear power plants with extremely high safety requirements, the applicability and reliability of these technologies need to be further verified and improved.

[0004] In addition, existing heat recovery systems rarely consider integrated optimization with other systems in nuclear power plants, such as integration with the power plant cooling water system or linkage with the power plant power system, which limits the potential and flexibility of heat recovery. Therefore, we propose a method for recovering process heat in nuclear power plants. Summary of the invention

[0005] In view of the above-mentioned problems, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is that the existing heat recovery system rarely takes into account the integrated optimization with other systems of the nuclear power plant, such as the combination with the cooling water system of the power plant, or the linkage with the power system of the power plant, which limits the potential and flexibility of heat recovery.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for recovering and utilizing process heat of a nuclear power plant, which includes collecting waste heat generated during the operation of the nuclear power plant; transferring the waste heat to a working medium through a heat exchanger to generate working medium steam; introducing the working medium steam into a turbine for expansion and work to generate electricity or provide power; condensing the working medium steam after passing through the turbine into liquid and returning it to the heat exchanger to form a closed-loop circulation; controlling the working parameters of the heat exchanger, turbine and condenser to improve the heat recovery efficiency.

[0008] As a preferred embodiment of the method for recovering and utilizing process heat of a nuclear power plant described in the present invention, the waste heat generated during the operation of the nuclear power plant is collected, including identifying the equipment and process generating waste heat in the nuclear power plant, determining the source of the waste heat, and designing an appropriate heat exchanger according to the temperature and flow of the waste heat; installing sensors at the inlet and outlet of the waste heat source and the heat exchanger to monitor the temperature and flow; recording the data of the normal operation of the nuclear power plant, including temperature, flow and pressure, and determining the quantity and quality of the waste heat.

[0009] As a preferred solution of the method for recovering process heat of a nuclear power plant described in the present invention, when designing an appropriate heat exchanger according to the temperature and flow rate of the waste heat, the heat calculation formula is:

[0010]

[0011] Where Q represents heat, It is expressed as mass flow rate, cp is expressed as specific heat capacity of working medium, ΔT is expressed as temperature difference; the efficiency calculation formula is expressed as,

[0012]

[0013] Among them, η x Expressed as system efficiency, Q 输出 Expressed as the heat output of the system, Q 输入 It is represented as the heat input into the system; the heat exchange design expression is,

[0014]

[0015] Where A represents the required surface area of ​​the heat exchanger, U represents the overall heat transfer coefficient, and ΔT lm Expressed as logarithmic mean temperature difference.

[0016] As a preferred embodiment of the method for recovering and utilizing process heat of a nuclear power plant described in the present invention, the method for selecting the working medium includes calculating the required heat transfer area, heat transfer coefficient and pressure drop, and selecting the working medium according to the temperature level of the waste heat; generating working medium steam includes connecting the heat exchanger to the cooling system of the nuclear power plant, allowing the waste heat to flow into the heat exchanger for waste heat transfer, configuring a circulation system for the working medium, including a pump, a pipe and a valve, so that the working medium flows and evaporates in the heat exchanger; starting the inflow of waste heat and simultaneously starting the circulation of the working medium, monitoring the temperature, pressure and flow of the heat exchanger, transferring the heat to the working medium through the heat exchanger, causing the working medium to evaporate into high-temperature and high-pressure steam, and adjusting the flow of the working medium as needed to control the steam output and parameters.

[0017] As a preferred solution of the method for recovering and utilizing process heat of a nuclear power plant described in the present invention, the steam production calculation formula is expressed as follows:

[0018]

[0019] Among them, h fg Expressed as the latent heat of vaporization of the working medium, Expressed as steam production;

[0020] The calculation formula of waste heat conversion efficiency is expressed as:

[0021]

[0022] Where η represents the efficiency of the heat exchanger, Q 废热 The heat expressed as waste heat; the pressure drop calculation formula is expressed as,

[0023]

[0024] Among them, ΔP represents the pressure drop, f represents the friction factor, L represents the pipe length, D represents the pipe diameter, ρ represents the fluid density, and v represents the fluid velocity.

[0025] As a preferred embodiment of the method for recovering and utilizing process heat of a nuclear power plant described in the present invention, the working medium steam after passing through the turbine is condensed into liquid to form a liquid working medium, and a pump is used to pump the liquid working medium back to the heat exchanger to complete the cycle; the heat exchanger is used to transfer the waste heat of the nuclear power plant to the working medium; the turbine is used to convert the thermal energy and pressure energy of the steam into mechanical energy, which is connected to the generator to directly generate electrical energy; the condenser is used to condense the steam and convert it back into liquid.

[0026] As a preferred solution of the process heat recovery and utilization method of a nuclear power plant described in the present invention, the control of the working parameters of the heat exchanger, turbine and condenser includes monitoring the temperature of the heat exchanger, turbine inlet and outlet and condenser, monitoring the pressure of the equipment to determine whether the pressure is within a safe range, monitoring the flow rate of the working medium, and controlling the circulation speed of the working medium in the system; adjusting the flow rate of the working medium as needed to control the heat absorption and release of the heat exchanger, controlling the pressure of the turbine inlet and outlet by adjusting the pump and valve, and controlling the temperature of the condenser by adjusting the cooling water flow or fan speed; the efficiency calculation formula of the turbine is expressed as:

[0027]

[0028] Among them, η 涡轮机 Expressed as the efficiency of the turbine, W 实际 Expressed as the actual output work, W理论 Expressed as theoretical output work, P 涡轮机 Expressed as the turbine power, h 入口 and h 出口 are expressed as the specific enthalpy at the turbine inlet and outlet, respectively.

[0029] Another object of the present invention is to provide a nuclear power plant process heat recovery and utilization system, which can automatically recover and utilize the waste heat of the nuclear power plant.

[0030] To solve the above technical problems, the present invention provides the following technical solutions: a system for a method for recovering and utilizing process heat in a nuclear power plant, comprising: a waste heat conversion module, a power generation cycle module and a control module; the waste heat conversion module collects waste heat generated during the operation of the nuclear power plant, transfers the waste heat to a working medium through a heat exchanger, and generates working medium steam; the power generation cycle module introduces the working medium steam into a turbine for expansion and work to generate electricity or provide power, condenses the working medium steam after passing through the turbine into liquid, and returns it to the heat exchanger to form a closed-loop cycle; the control module controls the working parameters of the heat exchanger, turbine and condenser to improve the heat recovery efficiency.

[0031] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned method for recovering and utilizing process heat in a nuclear power plant when executing the computer program.

[0032] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method for recovering and utilizing process heat in a nuclear power plant as described above.

[0033] The beneficial effects of the present invention are as follows: the present invention realizes the effective conversion and utilization of waste heat through the combination of equipment such as a heat exchanger, a turbine and a condenser, thereby improving the economy and reliability of the system.

[0034] By monitoring and controlling the operating parameters of the heat exchanger, turbine and condenser, the heat recovery efficiency and system stability are optimized, and the system's operating performance is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0036] Figure 1 This is a flow chart of a method for recovering process heat in a nuclear power plant in Example 1.

[0037] Figure 2 This is the Moka structure diagram of a nuclear power plant process heat recovery and utilization system in Example 2. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Example 1, reference Figure 1 , which is the first embodiment of the present invention, and which provides a method for recovering process heat in a nuclear power plant, including: Figure 1 The method for recovering and utilizing process heat in a nuclear power plant shown improves energy utilization efficiency and reduces energy waste by collecting and utilizing waste heat generated during the operation of the nuclear power plant. At the same time, the recovery and utilization of waste heat can reduce the nuclear power plant's demand for external energy, reduce greenhouse gas emissions, and is beneficial to environmental protection. Through the recovery and utilization of waste heat, the nuclear power plant can obtain additional sources of income and increase economic benefits. The automated control of the system reduces operating costs and improves operational reliability and safety. Therefore, the present invention has significant advantages in improving energy utilization efficiency, protecting the environment, and improving economic benefits.

[0041] Step 1: Collect waste heat generated during the operation of the nuclear power plant. The specific process is as follows:

[0042] Identify equipment and processes in nuclear power plants that generate waste heat, determine the source of the waste heat, and design appropriate heat exchangers based on the temperature and flow rate of the waste heat.

[0043] Install sensors at the inlet and outlet of waste heat sources and heat exchangers to monitor temperature and flow.

[0044] Record data during normal operation of nuclear power plants, including temperature, flow and pressure, and determine the quantity and quality of waste heat.

[0045] When designing an appropriate heat exchanger based on the temperature and flow of waste heat, the heat calculation formula is:

[0046]

[0047] Where Q represents heat, It is expressed as mass flow rate, cp is expressed as specific heat capacity of working medium, ΔT is expressed as temperature difference; the efficiency calculation formula is expressed as,

[0048]

[0049] Among them, η x Expressed as system efficiency, Q 输出 Expressed as the heat output of the system, Q 输入 It is represented as the heat input into the system; the heat exchange design expression is,

[0050]

[0051] Where A represents the required surface area of ​​the heat exchanger, U represents the overall heat transfer coefficient, and ΔT lm Expressed as logarithmic mean temperature difference.

[0052] Step 2: transferring the waste heat to the working medium through a heat exchanger to generate high-temperature and high-pressure working medium steam, specifically including:

[0053] Calculate the required heat transfer area, heat transfer coefficient, and pressure drop to ensure the heat exchanger can effectively transfer the waste heat.

[0054] According to the temperature level of the waste heat, select the appropriate working medium.

[0055] Connect the heat exchanger to the cooling system of the nuclear power plant to ensure that the waste heat can flow into the heat exchanger, and configure the circulation system of the working medium, including pumps, pipes and valves, to ensure that the working medium flows and evaporates in the heat exchanger.

[0056] Start the inflow of waste heat and the circulation of working medium at the same time, monitor the temperature, pressure and flow of the heat exchanger to ensure that the system operates in a safe and efficient state.

[0057] The waste heat is transferred to the working medium through the heat exchanger, causing it to evaporate into high-temperature and high-pressure steam. The flow rate of the working medium is adjusted as needed to control the steam output and parameters.

[0058] The steam production calculation formula is expressed as:

[0059]

[0060] Among them, h fg Expressed as the latent heat of vaporization of the working medium, Expressed as steam production;

[0061] The calculation formula of waste heat conversion efficiency is expressed as:

[0062]

[0063] Where η represents the efficiency of the heat exchanger, Q 废热The heat expressed as waste heat; the pressure drop calculation formula is expressed as,

[0064]

[0065] Among them, ΔP represents the pressure drop, f represents the friction factor, L represents the pipe length, D represents the pipe diameter, ρ represents the fluid density, and v represents the fluid velocity.

[0066] Step 3: Introduce the working medium steam into the turbine for expansion and work to generate electricity or provide power.

[0067] S4, condense the working medium steam after passing through the turbine into liquid and return it to the heat exchanger to form a closed loop cycle, specifically:

[0068] The high-temperature and high-pressure working medium steam drives the turbine to rotate. The turbine is connected to the generator to generate electricity. The thermal energy and pressure energy of the steam are converted into mechanical energy and finally into electrical energy.

[0069] The low-pressure steam after passing through the turbine enters the condenser, where the steam releases heat, changes from gas back to liquid, and uses cooling water or air as a cooling medium to take away the heat in the steam.

[0070] The condensed liquid working medium is collected and pumped back to the heat exchanger using a pump to complete the cycle.

[0071] S5. Control the operating parameters of the heat exchanger, turbine and condenser to optimize the heat recovery efficiency and system stability. The specific process is as follows:

[0072] Parameter monitoring, monitoring the temperature of heat exchangers, turbine inlets and outlets, and condensers, monitoring the pressures of these devices to ensure they are within a safe range, monitoring the flow of the working medium to control its circulation speed in the system. Analyze the monitored data to determine the performance indicators of the system.

[0073] Adjust the flow of working medium as needed to control the heat absorption and release of the heat exchanger. By adjusting the pump and valve, control the pressure at the turbine inlet and outlet to optimize the efficiency of the turbine. By adjusting the cooling water flow or fan speed, control the temperature of the condenser to ensure effective condensation of steam.

[0074] By fine-tuning the operating parameters, the heat recovery efficiency of the system can be improved, and an automated control system can be implemented to monitor and adjust the operating parameters in real time to reduce human intervention.

[0075] The efficiency calculation formula of the turbine is expressed as,

[0076]

[0077] Among them, η 涡轮机 Expressed as the efficiency of the turbine, W 实际 Expressed as the actual output work, W 理论 Expressed as theoretical output work, P 涡轮机 Expressed as the turbine power, h 入口 and h 出口 are expressed as the specific enthalpy at the turbine inlet and outlet, respectively.

[0078] Example 2, reference Figure 2 , which is the second embodiment of the present invention, and is different from the first embodiment in that: a system for a method for recovering and utilizing process heat in a nuclear power plant comprises a waste heat conversion module 100, a power generation cycle module 200 and a control module 300; the waste heat conversion module 100 collects waste heat generated during the operation of the nuclear power plant, and transfers the waste heat to a working medium through a heat exchanger to generate working medium steam; the power generation cycle module 200 introduces the working medium steam into a turbine for expansion and work to generate electricity or provide power, condenses the working medium steam after passing through the turbine into liquid, and returns it to the heat exchanger to form a closed-loop cycle; the control module 300 controls the working parameters of the heat exchanger, turbine and condenser to improve the heat recovery efficiency.

[0079] In addition, heat exchangers are used to transfer waste heat from nuclear power plants to the working medium; turbines are used to convert the thermal energy and pressure energy of steam into mechanical energy, which is connected to generators to directly generate electricity; and condensers are used to condense steam and convert it back into liquid.

[0080] Furthermore, the heat exchanger is one of the core components, responsible for effectively transferring the waste heat generated by the nuclear power plant to the working medium; the working medium usually selects a fluid with good thermal stability and high heat capacity, such as water or organic working fluid; in the heat exchanger, the waste heat is transferred to the working medium through the pipe wall, causing it to evaporate into high-temperature and high-pressure steam; this process requires precise design of the heat transfer area, heat transfer coefficient and pressure drop of the heat exchanger to ensure effective heat transfer; by monitoring the temperature and flow of the waste heat, the flow of the working medium can be adjusted, and the steam production and parameters can be controlled to meet the needs of subsequent processes.

[0081] The turbine is a key device that converts the thermal energy and pressure energy of steam into mechanical energy; in this system, the turbine is connected to a generator and can directly generate electrical energy; when the high-temperature and high-pressure working medium steam flows into the turbine, it drives the blades of the turbine to rotate, converting the thermal energy and pressure energy into mechanical energy; the design of the turbine needs to consider efficiency and reliability to ensure long-term stable operation; the efficiency of the turbine can be evaluated by monitoring the temperature and pressure at its inlet and outlet, and adjusted as needed.

[0082] The function of the condenser is to condense the low-pressure steam after passing through the turbine back into liquid so that the working medium can be recycled; in the condenser, the steam releases heat and changes from gas back to liquid. This process usually requires cooling water or air as a cooling medium to remove the heat from the steam; the condensed liquid working medium is collected and pumped back to the heat exchanger to complete the cycle; the design and operation of the condenser needs to ensure the effective condensation of the steam while minimizing energy consumption.

[0083] Optimization and control of the entire system are key to ensuring heat recovery efficiency and system stability; this includes monitoring the operating parameters of the heat exchanger, turbine and condenser, such as temperature, pressure and flow, and adjusting the flow of the working medium, pump and valve settings based on the monitoring data; through the automated control system, these parameters can be monitored and adjusted in real time, reducing human intervention and improving the system's response speed and operating efficiency.

[0084] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0085] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0086] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0087] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0088] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for recovering process heat in a nuclear power plant, characterized in that: include, Collect waste heat generated during the operation of nuclear power plants; The waste heat is transferred to the working medium through the heat exchanger to generate working medium steam; The working medium steam is introduced into the turbine for expansion and work to generate electricity or provide power; The working medium steam after passing through the turbine is condensed into liquid and returned to the heat exchanger to form a closed loop cycle; Control the operating parameters of heat exchangers, turbines and condensers to improve heat recovery efficiency.

2. A method for recovering process heat in a nuclear power plant according to claim 1, characterized in that: The collection of waste heat generated during the operation of the nuclear power plant includes identifying the equipment and processes that generate waste heat in the nuclear power plant, determining the source of the waste heat, and designing an appropriate heat exchanger based on the temperature and flow rate of the waste heat; Install sensors at the inlet and outlet of waste heat sources and heat exchangers to monitor temperature and flow; Record data during normal operation of nuclear power plants, including temperature, flow and pressure, and determine the quantity and quality of waste heat.

3. A method for recovering process heat in a nuclear power plant according to claim 2, characterized in that: When designing an appropriate heat exchanger according to the temperature and flow of waste heat, the heat calculation formula is: Where Q represents heat, It is expressed as mass flow rate, cp is expressed as specific heat capacity of working medium, ΔT is expressed as temperature difference; The efficiency calculation formula is expressed as: Among them, η x Expressed as system efficiency, Q 输出 Expressed as the heat output of the system, Q 输入 It is expressed as the heat input into the system; The heat exchange design expression is: Where A represents the required surface area of ​​the heat exchanger, U represents the overall heat transfer coefficient, and ΔT lm Expressed as logarithmic mean temperature difference.

4. A method for recovering process heat in a nuclear power plant according to claim 3, characterized in that: The method for selecting the working medium includes calculating the required heat transfer area, heat transfer coefficient and pressure drop, and selecting the working medium according to the temperature level of the waste heat; The generating of the working medium steam includes connecting the heat exchanger to the cooling system of the nuclear power plant, allowing the waste heat to flow into the heat exchanger to transfer the waste heat, configuring a circulation system of the working medium, including a pump, a pipeline and a valve, so that the working medium flows and evaporates in the heat exchanger; Start the inflow of waste heat and the circulation of the working medium at the same time, monitor the temperature, pressure and flow of the heat exchanger, transfer the heat to the working medium through the heat exchanger, and evaporate the working medium into high-temperature and high-pressure steam. Adjust the flow of the working medium as needed to control the steam output and parameters.

5. A method for recovering process heat in a nuclear power plant according to claim 4, characterized in that: The steam production calculation formula is expressed as follows: Among them, h fg Expressed as the latent heat of vaporization of the working medium, Expressed as steam production; The calculation formula of waste heat conversion efficiency is expressed as: Where η represents the efficiency of the heat exchanger, Q 废热 heat expressed as waste heat; The pressure drop calculation formula is expressed as: Among them, ΔP represents the pressure drop, f represents the friction factor, L represents the pipe length, D represents the pipe diameter, ρ represents the fluid density, and v represents the fluid velocity.

6. A method for recovering process heat in a nuclear power plant according to claim 5, characterized in that: After the working medium vapor passes through the turbine, it is condensed into liquid to form a liquid working medium, and the liquid working medium is pumped back to the heat exchanger by a pump to complete the cycle; The heat exchanger is used to transfer the waste heat of the nuclear power plant to the working medium; the turbine is used to convert the thermal energy and pressure energy of the steam into mechanical energy, which is connected to the generator to directly generate electrical energy; the condenser is used to condense the steam and convert it back into liquid.

7. A method for recovering process heat in a nuclear power plant according to claim 6, characterized in that: The controlling of the working parameters of the heat exchanger, turbine and condenser includes monitoring the temperature of the heat exchanger, turbine inlet and outlet and condenser, monitoring the pressure of the equipment to determine whether the pressure is within a safe range, monitoring the flow rate of the working medium and controlling the circulation speed of the working medium in the system; Adjust the flow of working medium as needed to control the heat absorption and release of heat in the heat exchanger, control the pressure at the turbine inlet and outlet by adjusting the pump and valve, and control the temperature of the condenser by adjusting the cooling water flow or fan speed; The efficiency calculation formula of the turbine is expressed as: Among them, η 涡轮机 Expressed as the efficiency of the turbine, W 实际 Expressed as the actual output work, W 理论 Expressed as theoretical output work, P 涡轮机 Expressed as the turbine power, h 入口 and h 出口 are expressed as the specific enthalpy at the turbine inlet and outlet, respectively.

8. A system using a nuclear power plant process heat recovery method as claimed in any one of claims 1 to 7, characterized in that: It comprises a waste heat conversion module (100), a power generation cycle module (200) and a control module (300); The waste heat conversion module (100) collects waste heat generated during the operation of the nuclear power plant, transfers the waste heat to the working medium through a heat exchanger, and generates working medium steam; The power generation cycle module (200) introduces the working medium steam into the turbine for expansion and work to generate electricity or provide power, condenses the working medium steam after passing through the turbine into liquid, and returns it to the heat exchanger to form a closed loop cycle; The control module (300) controls the operating parameters of the heat exchanger, turbine and condenser to improve the heat recovery efficiency.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of a method for recovering and utilizing process heat in a nuclear power plant as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for recovering and utilizing process heat in a nuclear power plant as described in any one of claims 1 to 7 are implemented.

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