Temperature control method and device, computer equipment, storage medium and program product

Abstract

The invention relates to a temperature control method and device, computer equipment, a storage medium and a program product. The method comprises the steps that the current fluid temperature value of a heating section of a steam generator between a second loop and a third loop of a low-temperature heat supply reactor is collected; on the basis of the mapping relation between the temperature of the steam output by the three loops and the temperature value of the heating section of the steam generator, the temperature requirement of the steam output by the three loops is converted, and the set fluid temperature value of the heating section of the steam generator is determined; based on the current fluid temperature value, the fluid temperature difference value of the set fluid temperature values and the heating position of molten salt loop heating equipment, the molten salt loop heating equipment is controlled to heat a liquid medium in an input pipeline of a secondary loop of the low-temperature heat supply reactor, and the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value. By adopting the method, the high steam temperature meeting user requirements can be stably output.

Description

Technical Field

[0001] This application relates to the field of heating technology, and in particular to a temperature control method, apparatus, computer equipment, storage medium, and program product. Background Technology

[0002] Low-temperature heating reactors have significant potential for application in the industrial heating field due to their advantages of safe operation and stable temperature control. A low-temperature heating reactor consists of a primary loop, a secondary loop, and a tertiary loop. The primary and secondary loops transfer heat through a dedicated isolated heat exchanger, while the secondary and tertiary loops are coupled through a steam generator.

[0003] To ensure the safety of the primary loop, the secondary loop is designed with a higher pressure than the primary loop, thereby locking the secondary loop medium into a liquid state. The secondary and tertiary loops are connected via a steam generator. When the liquid medium output from the secondary loop releases heat to the tertiary loop through the steam generator, the resulting steam pressure and temperature will be significantly lower, failing to meet the industrial users' requirements for high steam temperatures (such as high-pressure, superheated steam).

[0004] Therefore, how to stably output high steam temperatures that meet user needs under the dynamic power changes and system safety constraints of low-temperature heating reactors has become an urgent problem to be solved. Summary of the Invention

[0005] Therefore, it is necessary to provide a temperature control method, device, computer equipment, storage medium, and program product to address the above-mentioned technical problems, which can stably output high steam temperatures that meet user needs under the dynamic power changes and system safety constraints of the cryogenic heating reactor.

[0006] In a first aspect, this application provides a temperature control method applied to the secondary loop of a cryogenic heating reactor, comprising:

[0007] When the reactor power in the primary loop of the cryogenic heating reactor fluctuates, or when the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet the user's requirements, the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor is collected.

[0008] Based on the mapping relationship between the steam temperature output from the three loops and the temperature value of the heating section of the steam generator, the steam temperature requirement output from the three loops is converted to determine the set fluid temperature value of the heating section of the steam generator.

[0009] Based on the current fluid temperature value, the fluid temperature difference between the set fluid temperature value and the heating position of the molten salt circuit heating device, the molten salt circuit heating device is controlled to heat the liquid medium in the input pipe of the secondary circuit of the low-temperature heating reactor until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value.

[0010] The molten salt circuit heating device is positioned at any point in the input pipe of the secondary loop of the cryogenic heating reactor, and the heating temperature at this point is higher than the fluid temperature difference. In one embodiment, based on the current fluid temperature, the fluid temperature difference between the set fluid temperature and the molten salt circuit heating device, and the heating position of the molten salt circuit heating device, the molten salt circuit heating device is controlled to heat the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor, including:

[0011] The specific heat capacity of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor at the current temperature and pressure is obtained; and the mass flow rate of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor is obtained.

[0012] Based on the specific heat capacity of the medium, the mass flow rate of the medium, the temperature difference of the fluid, and the heating position of the molten salt circuit heating equipment, the heating power corresponding to the molten salt circuit heating equipment is determined.

[0013] The liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor is heated according to the heating power.

[0014] In one embodiment, the heating power corresponding to the molten salt circuit heating device is determined based on the specific heat capacity of the medium, the mass flow rate of the medium, the fluid temperature difference, and the heating position of the molten salt circuit heating device, including:

[0015] Based on the mapping relationship between distance and temperature, the distance between the heating position of the molten salt circuit heating equipment and the setting position of the steam generator is mapped to determine the fluid temperature compensation value.

[0016] The sum of the fluid temperature compensation value and the fluid temperature difference value is used as the corresponding temperature adjustment value for the molten salt circuit heating equipment;

[0017] Calculate the product of the specific heat capacity of the medium, the mass flow rate of the medium, and the temperature adjustment value, and use the product result as the heating power corresponding to the molten salt circuit heating equipment.

[0018] In one embodiment, heating the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor according to the heating power includes:

[0019] Based on the mapping relationship between power and flow rate, the heating power is mapped to obtain the molten salt flow rate corresponding to the heating power;

[0020] Based on the molten salt flow rate, obtain the target control pump speed or the target valve opening of the molten salt circuit heating equipment;

[0021] The control pump of the molten salt circuit heating equipment is rotated according to the target control pump speed, or the valve opening of the control molten salt circuit heating equipment is adjusted to the target valve opening, so as to heat the fluid medium in the input pipe of the secondary circuit of the cryogenic heating reactor.

[0022] In one embodiment, the method further includes:

[0023] During the process of heating the liquid medium in the input pipe of the secondary loop of the low-temperature heating reactor through the molten salt loop heating equipment, the specific heat capacity of the molten salt under the current state and the temperature difference of the molten salt fluid before and after heating are obtained.

[0024] Calculate the current heating power of the molten salt circuit heating equipment based on the molten salt flow rate, molten salt specific heat capacity, and molten salt fluid temperature difference;

[0025] Based on the power difference between the current heating power and the heating demand power corresponding to the set fluid temperature value, obtain the control pump speed adjustment value of the molten salt circuit heating equipment, or obtain the valve opening adjustment value of the molten salt circuit heating equipment;

[0026] The speed of the control pump in the molten salt circuit heating equipment is adjusted according to the control pump speed adjustment value, or the valve opening of the molten salt circuit heating equipment is adjusted according to the valve opening adjustment value.

[0027] In one embodiment, the method further includes:

[0028] Calculate the steam temperature difference between the steam temperature requirement of the three-loop output and the output temperature value of the three-loop;

[0029] Based on the steam temperature difference, the steam heaters of the three loops are controlled to heat the steam output from the steam generator until the output temperature of the three loops reaches the required steam temperature.

[0030] Secondly, this application also provides a temperature control device, comprising:

[0031] The acquisition module is used to acquire the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor when the reactor power of the primary loop of the cryogenic heating reactor fluctuates, or when the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet the user's requirements.

[0032] The conversion module is used to convert the steam temperature requirements of the three-loop output based on the mapping relationship between the steam temperature output of the three loops and the temperature value of the heating section of the steam generator, and to determine the set fluid temperature value of the heating section of the steam generator.

[0033] The heating module is used to control the molten salt circuit heating device to heat the liquid medium in the input pipe of the secondary loop of the low-temperature heating reactor based on the current fluid temperature value, the fluid temperature difference between the set fluid temperature value and the heating position of the molten salt circuit heating device, until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value.

[0034] The heating position of the molten salt circuit heating equipment is any position in the input pipe of the secondary circuit of the low-temperature heating reactor, and the heating temperature at the heating position is higher than the fluid temperature difference.

[0035] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the content of any embodiment of the temperature control method in the first aspect described above.

[0036] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the content of any embodiment of the temperature control method in the first aspect described above.

[0037] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the content of any embodiment of the temperature control method in the first aspect described above.

[0038] The aforementioned temperature control method, device, computer equipment, storage medium, and program product, when the reactor power in the primary loop of the cryogenic heating reactor fluctuates, or when the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet user requirements, collects the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor; based on the mapping relationship between the steam temperature output from the tertiary loop and the temperature value of the heating section of the steam generator, converts the steam temperature requirement output from the tertiary loop to determine the set fluid temperature value of the heating section of the steam generator; based on the current fluid temperature value, the fluid temperature difference between the set fluid temperature value and the molten salt loop heating device, and the heating position of the molten salt loop heating device, controls the molten salt loop heating device to heat the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value; wherein, the heating position of the molten salt loop heating device is any position in the input pipe of the secondary loop of the cryogenic heating reactor, and the heating temperature value at the heating position is higher than the fluid temperature difference. This method, when the primary circuit reactor power fluctuates or the tertiary circuit output steam temperature fails to meet user requirements, first collects the current fluid temperature value of the heating section of the steam generator. Then, based on the pre-calibrated mapping relationship between the tertiary circuit steam temperature and the heating section temperature, it determines the set temperature value. Finally, according to the temperature difference and the flexible placement characteristics of the molten salt heating equipment, it directionally heats the liquid medium in the secondary circuit input pipeline, significantly increasing the working fluid temperature on the heating side of the steam generator. According to Rankine cycle theory, the increase in working fluid temperature directly increases the steam pressure and temperature, avoiding the additional energy consumption and energy loss of tertiary circuit steam pressurization. Moreover, the heating temperature is higher than the temperature difference, which can quickly compensate for temperature deviations, ensuring that the tertiary circuit output steam temperature stably matches the user needs of industrial heating, production steam, etc., improving the stability and reliability of the heating system. At the same time, the molten salt heating equipment can be flexibly arranged at any position in the secondary circuit input pipeline without large-scale modification of the original circuit structure, taking into account both system adaptability and modification cost control. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a diagram illustrating the application environment of a temperature control method in one embodiment;

[0041] Figure 2 This is a flowchart illustrating a temperature control method in one embodiment;

[0042] Figure 3 This is a schematic diagram of the architecture of a cryogenic heating reactor system in one embodiment;

[0043] Figure 4 This is a flowchart illustrating a temperature control method in one embodiment;

[0044] Figure 5 This is a flowchart illustrating a temperature control method in one embodiment;

[0045] Figure 6 This is a flowchart illustrating a temperature control method in one embodiment;

[0046] Figure 7 This is a flowchart illustrating a temperature control method in one embodiment;

[0047] Figure 8 This is a flowchart illustrating a temperature control method in one embodiment;

[0048] Figure 9 This is a flowchart illustrating a temperature control method in one embodiment;

[0049] Figure 10 This is a structural block diagram of a temperature control device in one embodiment. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0051] Before providing a detailed description of the technical solution of this application, a brief explanation of the background technology of this application will be given first.

[0052] Low-temperature heating reactors have significant potential for application in the industrial heating field due to their advantages of safe operation and stable temperature control. A low-temperature heating reactor consists of a primary loop, a secondary loop, and a tertiary loop. The primary and secondary loops transfer heat through a dedicated isolated heat exchanger, while the secondary and tertiary loops are coupled through a steam generator.

[0053] To ensure the safety of the primary loop, the secondary loop is designed with a higher pressure than the primary loop, thereby locking the secondary loop medium into a liquid state. The secondary and tertiary loops are connected via a steam generator. When the liquid medium output from the secondary loop releases heat to the tertiary loop through the steam generator, the resulting steam pressure and temperature will be significantly lower, failing to meet the industrial users' requirements for high steam temperatures (such as high-pressure, superheated steam).

[0054] In related technologies, steam is typically heated and pressurized in a three-loop system. While heating steam to a higher temperature is relatively straightforward due to its characteristics, increasing steam pressure requires a steam compressor. However, steam compressors are relatively unstable and discontinuous in operation (e.g., positive displacement compressors), have limited operating experience, and require stringent design specifications (e.g., centrifugal compressors), and are also energy-intensive and noisy. Therefore, steam compressors are only used at low pressures or low flow rates. These factors severely restrict the economic viability and large-scale deployment of nuclear heating.

[0055] In addition, it should be noted that fluctuations in the primary loop power of the low-temperature heating reactor can cause instability in steam parameters. That is, when the primary loop is adjusted from low power to high power, the average core temperature tends to decrease, which leads to instability in the heat exchange process of the secondary and tertiary loops. As a result, the temperature and pressure of the output steam fluctuate greatly, which cannot meet the user's stringent requirements for the stability of steam parameters.

[0056] To address the aforementioned problems, this application provides a temperature control method, apparatus, computer equipment, storage medium, and program product, capable of stably outputting high steam temperatures that meet user requirements under dynamic power variations and system safety constraints in cryogenic heating reactors. The technical solution of this application will be described in detail below.

[0057] The temperature control method provided in this application embodiment can be applied to, for example, Figure 1 The application environment shown is illustrated. For example, the computer device can be a server, personal computer, laptop, smartphone, tablet, mobile phone, etc. The computer device may include a processor, memory, and network interface connected via a system bus or wirelessly. The processor provides computing and control capabilities. The memory may include non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database stores data related to the temperature control process. The network interface communicates with external terminals via a network connection, and the computer program, when executed by the processor, implements a temperature control method. The computer device can be implemented using a standalone computer or a cluster of multiple computer devices. It should be noted that the memory of the computer device is not limited to the above-mentioned memory and may also include high-speed random access memory, volatile solid-state memory, etc. Furthermore, the architecture of the computer device is not limited to the above-described cases; some components may be added or omitted.

[0058] In one exemplary embodiment, such as Figure 2As shown, a temperature control method is provided, which is applied to... Figure 1 Taking a computer device as an example, the explanation includes the following steps S101 to S103. Wherein:

[0059] S101, when the reactor power of the primary loop of the cryogenic heating reactor fluctuates, or when the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet the user's requirements, the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor is collected.

[0060] The fluctuation in reactor power in the primary loop of the cryogenic heating reactor may be due to unsteady fluctuations caused by factors such as fluctuations in the heat release efficiency of the reactor fuel rods and abnormal coolant circulation flow. The failure of the tertiary loop to meet user demand for steam temperature means that the steam temperature delivered to users has not reached the preset heating parameter threshold, and cannot meet the actual needs of users such as those using steam for industrial production or residential heating.

[0061] In this embodiment, the computer equipment can monitor the power fluctuations of the primary loop and the steam temperature output from the tertiary loop of the cryogenic heating reactor using corresponding sensors. If a power fluctuation in the primary loop or a failure of the steam temperature output from the tertiary loop to meet user requirements is detected, the computer can control the temperature sensor in the heating section of the steam generator located between the secondary and tertiary loops to collect the current fluid temperature value at that location. Alternatively, the temperature sensor in the heating section of the steam generator located between the secondary and tertiary loops can upload the collected fluid temperature values ​​to the computer equipment according to a preset time period. If a power fluctuation in the primary loop or a failure of the steam temperature output from the tertiary loop to meet user requirements is detected, the latest received fluid temperature value can be used as the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops. This embodiment does not limit the method of collecting the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor.

[0062] S102, based on the mapping relationship between the steam temperature output of the three loops and the temperature value of the heating section of the steam generator, converts the steam temperature requirement of the three loops and determines the set fluid temperature value of the heating section of the steam generator.

[0063] In this embodiment, the mapping relationship between the steam temperature output from the three-loop system and the temperature value of the heating section of the steam generator can be determined through experimental calibration or simulation data. This mapping relationship includes the heat loss of steam in the three-loop delivery pipeline and the attenuation of the heat exchange efficiency of the steam generator. After obtaining the user's steam temperature requirement for the three-loop system, the computer equipment can use the mapping relationship to convert the steam temperature requirement and obtain the set fluid temperature value of the heating section of the steam generator.

[0064] Similarly, this mapping relationship can be understood as the temperature difference between two different locations. Due to steam losses during transport, the temperature of the heating section of the steam generator will be higher than the steam temperature output from the three loops. Therefore, the computer equipment can calculate the sum of the steam temperature requirement output from the three loops and the temperature difference in the mapping relationship, and use the calculation result as the set fluid temperature value for the heating section of the steam generator.

[0065] S103, based on the fluid temperature difference between the current fluid temperature value and the set fluid temperature value, and the heating position of the molten salt circuit heating device, controls the molten salt circuit heating device to heat the liquid medium in the input pipe of the secondary circuit of the low-temperature heating reactor until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value.

[0066] The heating position of the molten salt circuit heating equipment is any position in the input pipe of the secondary circuit of the low-temperature heating reactor, and the heating temperature at the heating position is higher than the fluid temperature difference.

[0067] In this embodiment, after obtaining the current fluid temperature value and the fluid temperature difference between the set fluid temperature value and the current fluid temperature value, the computer device can input the current fluid temperature value, the fluid temperature difference between the set fluid temperature value and the heating position of the molten salt circuit heating device into a preset neural network model. The neural network model then predicts the heating power corresponding to the molten salt circuit heating device. Alternatively, the computer device can determine the temperature loss value between the molten salt circuit heating device and the heating section of the steam generator based on the heating position of the molten salt circuit heating device, and combine the temperature loss value with the fluid temperature difference to determine the total temperature loss. Then, according to the mapping relationship between temperature and power, the heating power of the molten salt circuit heating device is determined.

[0068] The molten salt circuit heating equipment is controlled according to the heating power to heat the liquid medium in the input pipe of the secondary circuit of the low-temperature heating reactor, and the current fluid temperature value of the heating section of the steam generator is monitored in real time during the heating process until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value.

[0069] Figure 3This is a schematic diagram of the architecture of a cryogenic heating reactor system. The system's core logic revolves around primary loop heat generation and transfer, secondary loop intermediate heating, steam generator heat exchange, and user-side steam supply. Specifically, it includes: a primary loop (① in the diagram), a secondary loop (④ in the diagram), a steam generator (SG in the diagram), and a tertiary loop (⑫ in the diagram). The primary loop consists of a natural circulation pressurized water reactor core and a main heat exchanger. The heat generated by the core is transferred to the secondary loop via the main heat exchanger (② in the diagram), achieving heat exchange between the primary and secondary loops. Simultaneously, the isolation function of the main heat exchanger prevents leakage of radioactive media from the primary loop to the secondary loop. After absorbing heat from the primary loop through the main heat exchanger, the media transfers this heat to the liquid media in the secondary loop via the steam generator. The molten salt loop heating equipment (⑩ in the diagram) is mainly used to heat the liquid media in the input pipes of the secondary loop of the cryogenic heating reactor. ⑧ represents the molten salt storage tank, ⑨ represents the molten salt loop heating system, and ⑪ represents the steam heater. Molten salt circuit heating equipment can employ various heating methods, such as electric heating, solar heating, chemical waste heat recovery, and the reuse of clean energy sources like air.

[0070] The energy source for molten salt circuit heating equipment can be solar energy, industrial by-product heat, or electric heating, in conjunction with nuclear energy to provide users with low-carbon heat. Understandably, to support industrial users' goals of carbon reduction and emission reduction, molten salt thermal storage should prioritize solar heating. Linear Fresnel heating can be used, but trough heating is more space-efficient. Electric heating serves as a supplementary method when other heating methods are insufficient.

[0071] The calculation of molten salt reserves needs to consider the total heat required for the secondary and tertiary circuits to heat up between the two solar supplementation heating cycles, so that the molten salt temperature is reduced to a level still above the minimum temperature at which the molten salt can operate normally. It also needs to consider the minimum heating temperature of the heater's heat exchange area, and that even at a temperature above the required secondary and tertiary circuits, the molten salt can still meet the average logarithmic temperature difference requirement for the heat exchange area under maximum flow conditions.

[0072] To reduce operating costs, the capacity of the electric heating system should be designed to utilize off-peak electricity to provide energy for the molten salt to cope with extreme weather conditions where heating is required.

[0073] The higher the molten salt reserves and the greater the solar heating capacity, the more stable the system operation. However, considering overall economic factors, it is possible to reduce the molten salt reserves and increase the utilization rate of other backup heat sources (such as electric heating).

[0074] After being heated in the secondary circuit, the steam generator exchanges heat with the incoming water from the tertiary circuit, heating the water into saturated steam. If the user requires superheated steam, the saturated steam can enter the steam heater for further heating, reaching the user's required superheated temperature before being delivered to the user.

[0075] It should also be noted that during the operation of the cryogenic heating reactor, it is assumed that the steam pressure and temperature of the secondary loop will decrease as the primary loop power fluctuates. Therefore, it is necessary to simultaneously increase the heating power of the intermediate loop to ensure that the inlet temperature of the secondary loop side of the steam generator remains constant.

[0076] In the above temperature control method, when the reactor power of the primary loop of the cryogenic heating reactor fluctuates, or when the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet the user's requirements, the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor is collected; based on the mapping relationship between the steam temperature output from the tertiary loop and the temperature value of the heating section of the steam generator, the steam temperature requirement output from the tertiary loop is converted to determine the set fluid temperature value of the heating section of the steam generator; based on the current fluid temperature value, the fluid temperature difference between the set fluid temperature value and the molten salt loop heating device, and the heating position of the molten salt loop heating device, the molten salt loop heating device is controlled to heat the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value; wherein, the heating position of the molten salt loop heating device is any position in the input pipe of the secondary loop of the cryogenic heating reactor, and the heating temperature value at the heating position is higher than the fluid temperature difference. This method, when the primary circuit reactor power fluctuates or the tertiary circuit output steam temperature fails to meet user requirements, first collects the current fluid temperature value of the heating section of the steam generator. Then, based on the pre-calibrated mapping relationship between the tertiary circuit steam temperature and the heating section temperature, it determines the set temperature value. Finally, according to the temperature difference and the flexible placement characteristics of the molten salt heating equipment, it directionally heats the liquid medium in the secondary circuit input pipeline, significantly increasing the working fluid temperature on the heating side of the steam generator. According to Rankine cycle theory, the increase in working fluid temperature directly increases the steam pressure and temperature, avoiding the additional energy consumption and energy loss of tertiary circuit steam pressurization. Moreover, the heating temperature is higher than the temperature difference, which can quickly compensate for temperature deviations, ensuring that the tertiary circuit output steam temperature stably matches the user needs of industrial heating, production steam, etc., improving the stability and reliability of the heating system. At the same time, the molten salt heating equipment can be flexibly arranged at any position in the secondary circuit input pipeline without large-scale modification of the original circuit structure, taking into account both system adaptability and modification cost control.

[0077] In one embodiment, such as Figure 4 As shown, the detailed description of how the molten salt circuit heating device controls the heating of the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor based on the fluid temperature difference between the current fluid temperature value and the set fluid temperature value, and the heating position of the molten salt circuit heating device, is provided. This detailed description includes:

[0078] S201, obtain the specific heat capacity of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor at the current temperature and current pressure; and obtain the mass flow rate of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor.

[0079] In this embodiment of the application, before heating the liquid medium in the secondary loop input pipe using the molten salt loop heating device, the sensors deployed in the secondary loop input pipe can obtain the fluid medium in the pipe under the current temperature and pressure conditions in real time. Then, based on the fluid property parameter table pre-stored in the low temperature heating reactor operation database, which covers different temperature and pressure ranges, the specific heat capacity of the fluid medium under the current temperature and pressure is determined.

[0080] Similarly, computer equipment can also collect the fluid velocity in the pipe by deploying an electromagnetic flow meter in the secondary input pipe, and calculate the fluid mass flow rate in real time based on the fluid velocity and the pipe cross-sectional area.

[0081] S202, based on the specific heat capacity of the medium, the mass flow rate of the medium, the fluid temperature difference, and the heating position of the molten salt circuit heating device, determine the heating power corresponding to the molten salt circuit heating device.

[0082] In this embodiment, after obtaining the specific heat capacity, mass flow rate, and temperature difference of the medium, the computer device can calculate the fluid temperature compensation value based on the pipe heat loss coefficient and heat transfer efficiency corresponding to the heating position of the molten salt circuit heating device at the secondary input pipe. Then, based on the thermodynamic energy balance formula, the heating power corresponding to the molten salt circuit heating device is calculated by considering the specific heat capacity, mass flow rate, temperature difference, and temperature compensation value of the medium.

[0083] S203, according to the heating power, heats the liquid medium in the input pipe of the secondary loop of the low-temperature heating reactor.

[0084] In this embodiment, when the heating power corresponding to the molten salt circuit heating device is calculated, the computer device can generate a heating command corresponding to the molten salt circuit heating device based on the heating power, and send the heating command to the driving device of the molten salt circuit heating device. After receiving the heating command, the driving device can drive the molten salt circuit heating device to heat the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor according to the heating power carried in the heating command.

[0085] In the aforementioned temperature control method, the specific heat capacity of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor at the current temperature and pressure is obtained; and the mass flow rate of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor is obtained; based on the specific heat capacity, mass flow rate, fluid temperature difference, and the heating position of the molten salt circuit heating equipment, the heating power corresponding to the molten salt circuit heating equipment is determined; and the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor is heated according to the heating power. This method, by obtaining the specific heat capacity and mass flow rate of the fluid medium in the secondary loop input pipe in real time under the current temperature and pressure conditions, combined with the temperature difference of the steam generator heating section and the installation position parameters of the molten salt heating equipment, can accurately predict the heating power required for the heating process. Then, the liquid medium in the secondary loop is directionally heated according to this heating power, ensuring precise matching of energy supply and demand in the heating process, avoiding problems such as energy waste due to excessive power and temperature control lag due to insufficient power caused by traditional empirical heating.

[0086] The following example will illustrate the detailed process of determining the heating power of the molten salt circuit heating device based on the specific heat capacity of the medium, the mass flow rate of the medium, the fluid temperature difference, and the heating position of the molten salt circuit heating device. Figure 5 As shown, the specific content includes:

[0087] S301, based on the mapping relationship between distance and temperature, map the distance between the heating position of the molten salt circuit heating equipment and the setting position of the steam generator to determine the fluid temperature compensation value.

[0088] In this embodiment, a mapping relationship exists between temperature and distance; the greater the distance, the greater the temperature loss, and the closer the distance, the less the temperature loss. The computer device can analyze and map the distance between the heating position of the molten salt circuit heating device and the setting position of the steam generator based on this mapping relationship, converting the distance to temperature to obtain a fluid temperature compensation value.

[0089] S302, the sum of the fluid temperature compensation value and the fluid temperature difference value is used as the corresponding temperature adjustment value for the molten salt circuit heating equipment.

[0090] In this embodiment of the application, after obtaining the fluid temperature compensation value, the computer device can add the fluid temperature compensation value, which represents the temperature loss in the fluid flow process, and the fluid temperature difference value, which represents the difference between the temperature and the set temperature, and use the sum as the temperature adjustment value corresponding to the molten salt circuit heating device.

[0091] S303 calculates the product of the specific heat capacity of the medium, the mass flow rate of the medium, and the temperature adjustment value, and uses the product result as the heating power corresponding to the molten salt circuit heating equipment.

[0092] In this embodiment, the formula for calculating the heating power ΔPr of the molten salt circuit heating device can be expressed as: ΔPr = Qr × Cpr × ΔTr. Wherein, Qr represents the mass flow rate of the medium; Cpr represents the specific heat capacity of the medium; and ΔTr represents the temperature adjustment value.

[0093] Once the specific heat capacity, mass flow rate, and temperature adjustment value of the medium are obtained, the computer equipment can substitute these values ​​into the above calculation formula and calculate the heating power corresponding to the molten salt circuit heating equipment through multiplication.

[0094] In the aforementioned temperature control method, the distance between the heating position of the molten salt circuit heating device and the setting position of the steam generator is mapped according to the mapping relationship between distance and temperature to determine the fluid temperature compensation value. The sum of the fluid temperature compensation value and the fluid temperature difference is used as the temperature adjustment value corresponding to the molten salt circuit heating device. The product of the medium specific heat capacity, the medium mass flow rate, and the temperature adjustment value is calculated, and the product result is used as the heating power corresponding to the molten salt circuit heating device. This method maps the distance between the molten salt circuit heating device and the steam generator based on the mapping relationship between the distance and the fluid temperature attenuation, which can accurately determine the fluid temperature compensation value. Then, combined with the basic temperature difference of the steam generator heating section, the total temperature adjustment value is calculated. Finally, the heating power is quantified and determined by the product of the medium specific heat capacity, mass flow rate, and the total temperature adjustment value, and the heating operation is executed. This ensures that the temperature of the steam generator heating section can accurately and quickly reach the set value, and guarantees that the output steam temperature of the three circuits stably matches the user's needs.

[0095] Due to the characteristics of pressurized water reactors, the steam pressure generated by the steam generator will vary with power output. To ensure stable temperature and pressure of the steam supplied to users, it is necessary to control the flow rate in the molten salt circuit to guarantee that the temperature of the fluid entering the heating section of the steam generator reaches the set fluid temperature value at any power output. The following example will illustrate the detailed process of heating the liquid medium in the input pipe of the secondary circuit of the cryogenic heating reactor according to the heating power output. Figure 6 As shown, the details include:

[0096] S401, based on the mapping relationship between power and flow rate, maps the heating power to obtain the molten salt flow rate corresponding to the heating power.

[0097] In this embodiment of the application, the heating power is controlled by flow control. Therefore, the computer device can perform reverse mapping calculation based on the mapping relationship between power and flow, using the heating power as an input parameter, and use the mapping result as the molten salt flow rate corresponding to the heating power.

[0098] S402, based on the molten salt flow rate, obtain the target control pump speed of the molten salt circuit heating equipment or the target valve opening of the molten salt circuit heating equipment.

[0099] In this embodiment, flow control can be achieved by adjusting the pump speed of a variable frequency pump, positive displacement pump, etc., or by adjusting the valve opening. Regarding pump speed, the computer can perform a reverse mapping calculation based on the mapping relationship between molten salt flow rate and pump speed to obtain the target control pump speed for the molten salt circuit heating equipment. Similarly, regarding valve opening, the computer can also perform a reverse mapping calculation based on the mapping relationship between molten salt flow rate and valve opening to obtain the target valve opening for the molten salt circuit heating equipment.

[0100] S403, control the pump of the molten salt circuit heating equipment to rotate according to the target control pump speed, or control the valve opening of the molten salt circuit heating equipment to adjust to the target valve opening, so as to heat the fluid medium in the input pipe of the secondary circuit of the cryogenic heating reactor.

[0101] In this embodiment, after obtaining the target control pump speed of the molten salt circuit heating device, the computer device can send a speed control command to the control pump of the molten salt circuit heating device. After receiving the speed control command, the control pump adjusts its speed to the target control pump speed and maintains the target control pump speed. Alternatively, after obtaining the target valve opening degree of the molten salt circuit heating device, the computer device can send a valve opening control command to the valve controller. After receiving the valve opening control command, the valve controller adjusts the valve opening degree to the target valve opening degree.

[0102] It should be noted that flow control can be adjusted using either proportional-integral (PI) or proportional-integral-derivative (PID) methods.

[0103] In the aforementioned temperature control method, the heating power is mapped based on the mapping relationship between power and flow rate to obtain the molten salt flow rate corresponding to the heating power. The target control pump speed or target valve opening of the molten salt circuit heating equipment is obtained according to the molten salt flow rate. The control pump of the molten salt circuit heating equipment is controlled to rotate according to the target control pump speed, or the valve opening of the molten salt circuit heating equipment is adjusted to the target valve opening, in order to heat the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor. This method derives the target heating power in reverse based on the corresponding mapping relationship between heating power and molten salt flow rate, obtains the molten salt flow rate required for the heating power, and then precisely matches the target speed of the molten salt circuit control pump and the target valve opening according to the molten salt flow rate, driving the pump and valve to operate collaboratively according to the set parameters to complete the heating of the secondary loop fluid medium, thus achieving precise matching between heating power and molten salt delivery volume.

[0104] During the heating of the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor using a molten salt circuit heating device, the pump speed and valve opening can be flexibly adjusted in real time to precisely control the heating of the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor by the molten salt circuit heating device. The following example will illustrate the above in detail. Figure 7 As shown, the method also includes:

[0105] S501, during the process of heating the liquid medium in the input pipe of the secondary loop of the low-temperature heating reactor through the molten salt loop heating equipment, obtains the specific heat capacity of the molten salt under the current state and the temperature difference of the molten salt fluid before and after heating.

[0106] In this embodiment, during the heating of the liquid medium in the secondary loop input pipeline of the cryogenic heating reactor by the molten salt loop heating equipment, the computer equipment can collect the pressure and temperature parameters of the molten salt in real time under the current operating conditions through sensors deployed at the inlet and outlet of the molten salt loop, and match and look up the specific heat capacity of the molten salt under the corresponding operating conditions from the molten salt physical property parameter table. Simultaneously, the computer equipment can also collect the molten salt fluid temperature before and after heating through temperature sensors deployed at the inlet and outlet of the molten salt loop, calculate the difference between the molten salt fluid temperature after heating and the molten salt fluid temperature before heating, and use this difference as the molten salt fluid temperature difference before and after heating.

[0107] S502, based on molten salt flow rate, molten salt specific heat capacity and molten salt fluid temperature difference, calculates the current heating power of the molten salt circuit heating equipment.

[0108] In this embodiment of the application, the current heating power ΔPm of the molten salt circuit heating device can be expressed as: ΔPm=Qm×Cpm×ΔTm, where Qm represents the molten salt flow rate; Cpm represents the molten salt specific heat capacity; and ΔTm represents the molten salt fluid temperature difference.

[0109] The computer equipment can substitute the molten salt flow rate, molten salt specific heat capacity, and molten salt fluid temperature difference into the above formula to calculate the current heating power of the molten salt circuit heating equipment.

[0110] S503, based on the power difference between the current heating power and the heating demand power corresponding to the set fluid temperature value, obtain the control pump speed adjustment value of the molten salt circuit heating equipment, or obtain the valve opening adjustment value of the molten salt circuit heating equipment.

[0111] In this embodiment, after obtaining the current heating power of the molten salt circuit heating device, the computer device can calculate the power difference between the current heating power and the heating demand power corresponding to the set fluid temperature value. Then, based on the mapping relationship between power and flow rate, the power difference is mapped to obtain the molten salt flow rate adjustment value corresponding to the power adjustment. Furthermore, according to the mapping relationship between molten salt flow rate and pump speed, the molten salt flow rate adjustment value is inversely mapped and calculated to obtain the control pump speed adjustment value of the molten salt circuit heating device. Finally, according to the mapping relationship between molten salt flow rate and valve opening, the molten salt flow rate adjustment value is inversely mapped and calculated to obtain the valve opening adjustment value of the molten salt circuit heating device.

[0112] S504, adjust the speed of the control pump of the molten salt circuit heating equipment according to the control pump speed adjustment value, or adjust the valve opening of the molten salt circuit heating equipment according to the valve opening adjustment value.

[0113] In this embodiment, after obtaining the control pump speed adjustment value, the computer device can send a speed adjustment command to the control pump of the molten salt circuit heating equipment. Upon receiving the speed adjustment command, the control pump adjusts its speed according to the control pump speed adjustment value carried in the command. Alternatively, after obtaining the valve opening adjustment value, the computer device can send a valve adjustment command to the valve controller of the molten salt circuit heating equipment. Upon receiving the valve adjustment command, the valve controller adjusts the valve opening according to the valve opening adjustment value carried in the command.

[0114] In the above temperature control method, during the heating of the liquid medium in the input pipe of the secondary loop of the low-temperature heating reactor by the molten salt loop heating device, the specific heat capacity of the molten salt under the current state and the temperature difference of the molten salt fluid before and after heating are obtained; based on the molten salt flow rate, the specific heat capacity of the molten salt, and the temperature difference of the molten salt fluid, the current heating power of the molten salt loop heating device is calculated; based on the power difference between the current heating power and the heating demand power corresponding to the set fluid temperature value, the control pump speed adjustment value of the molten salt loop heating device is obtained, or the valve opening adjustment value of the molten salt loop heating device is obtained; according to the control pump speed adjustment value, the speed of the control pump of the molten salt loop heating device is adjusted, or according to the valve opening adjustment value, the valve opening of the molten salt loop heating device is adjusted. This method, during the heating of the liquid medium in the secondary input pipeline of the molten salt circuit heating equipment, collects the specific heat capacity of the molten salt and the temperature difference of the molten salt fluid before and after heating in real time. Combined with the molten salt flow rate, it calculates the actual current heating power of the equipment. Then, it compares the current heating power with the heating demand power corresponding to the set temperature to obtain the power difference. Based on this, it determines the adjustment value of the molten salt circuit control pump speed and valve opening, thereby dynamically correcting the pump and valve operating parameters. It can compensate for the power deviation caused by changes in molten salt physical properties and fluctuations in pipeline heat loss in real time, ensuring that the heating power is always accurately matched with the demand.

[0115] The above embodiments describe the heating process of the liquid medium in the input pipe of the secondary loop. Based on this, if the user requires superheated steam, the tertiary loop steam heater can be further controlled to reheat the steam output from the steam generator. Therefore, in one embodiment, such as... Figure 8 As shown, this document introduces the relevant content regarding the secondary heating of steam output from the steam generator by the three-loop steam heater. This specific content includes:

[0116] S601 calculates the steam temperature difference between the steam temperature requirement of the three-loop output and the output temperature value of the three-loop.

[0117] In this embodiment, during the process of the three-loop system supplying steam to the user, to ensure that the output steam temperature accurately matches the actual heating needs of industrial production, residential heating, etc., the computer equipment can collect the actual steam temperature value currently output by the three-loop system in real time through a temperature sensor deployed at the output end of the three-loop system. It then calculates the difference between the required steam temperature output by the three-loop system and the temperature value at the output end of the three-loop system, and uses this difference as the steam temperature difference.

[0118] S602 controls the steam heaters of the three circuits to heat the steam output from the steam generator according to the steam temperature difference until the output temperature of the three circuits reaches the required steam temperature.

[0119] In this embodiment, after obtaining the steam temperature difference between the required steam temperature output of the three-loop system and the output temperature value of the three-loop system, the computer device can issue a graded heating command to the steam heater deployed on the three-loop steam delivery pipeline based on the magnitude of the temperature difference. Upon receiving the heating command, the steam heater uses the heating power corresponding to the temperature difference to specifically heat the steam output from the steam generator. Simultaneously, based on real-time temperature data from the temperature sensor at the three-loop output end, the steam temperature trend can be dynamically monitored until the steam temperature value at the three-loop output end reaches the required steam temperature output of the three-loop system, thereby achieving secondary compensation and control of the three-loop steam temperature.

[0120] In the aforementioned temperature control method, the steam temperature difference between the required steam temperature output from the three loops and the actual output temperature of the three loops is calculated. Based on this temperature difference, the steam heaters in the three loops are controlled to heat the steam output from the steam generator until the output temperature of the three loops reaches the required steam temperature. This method, by calculating the difference between the required steam temperature output from the three loops and the actual output temperature, specifically controls the steam heaters in the three loops to perform secondary heating of the steam output from the steam generator until the temperature meets the standard. This compensates for potential temperature deviations in the multi-loop control process, further improving the matching accuracy between the output steam temperature of the three loops and the user's needs.

[0121] In a detailed embodiment, such as Figure 9 As shown, the temperature control method includes:

[0122] S701, when the reactor power of the primary loop of the cryogenic heating reactor fluctuates, or when the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet the user's requirements, the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor is collected.

[0123] S702, based on the mapping relationship between the steam temperature output of the three loops and the temperature value of the heating section of the steam generator, converts the steam temperature requirement of the three loops and determines the set fluid temperature value of the heating section of the steam generator.

[0124] S703, obtain the specific heat capacity of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor at the current temperature and current pressure; and obtain the mass flow rate of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor.

[0125] S704, according to the mapping relationship between distance and temperature, the distance between the heating position of the molten salt circuit heating equipment and the setting position of the steam generator are mapped to determine the fluid temperature compensation value;

[0126] S705, the sum of the fluid temperature compensation value and the fluid temperature difference value is used as the corresponding temperature adjustment value for the molten salt circuit heating equipment;

[0127] S706, calculate the product of the specific heat capacity of the medium, the mass flow rate of the medium and the temperature adjustment value, and use the product result as the heating power corresponding to the molten salt circuit heating equipment;

[0128] S707, based on the mapping relationship between power and flow rate, maps the heating power to obtain the molten salt flow rate corresponding to the heating power;

[0129] S708, according to the molten salt flow rate, obtain the target control pump speed of the molten salt circuit heating equipment or the target valve opening of the molten salt circuit heating equipment;

[0130] S709, control the pump of the molten salt circuit heating equipment to rotate according to the target control pump speed, or control the valve opening of the molten salt circuit heating equipment to adjust to the target valve opening, so as to heat the fluid medium in the input pipe of the secondary circuit of the cryogenic heating reactor;

[0131] S710, calculates the steam temperature difference between the steam temperature requirement of the three-loop output and the output temperature value of the three-loop.

[0132] S711 controls the steam heaters of the three circuits to heat the steam output from the steam generator according to the steam temperature difference until the output temperature of the three circuits reaches the required steam temperature.

[0133] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0134] Based on the same inventive concept, this application also provides a temperature control device for implementing the temperature control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more temperature control device embodiments provided below can be found in the limitations of the temperature control method described above, and will not be repeated here.

[0135] In one exemplary embodiment, such as Figure 10 As shown, a temperature control device is provided, including: a data acquisition module 11, a conversion module 12, and a heating module 13, wherein:

[0136] The acquisition module 11 is used to acquire the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor when the reactor power of the primary loop of the cryogenic heating reactor fluctuates, or when the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet the user's requirements.

[0137] The conversion module 12 is used to convert the steam temperature requirement of the three-loop output based on the mapping relationship between the steam temperature output of the three loops and the temperature value of the heating section of the steam generator, and to determine the set fluid temperature value of the heating section of the steam generator.

[0138] Heating module 13 is used to control the molten salt circuit heating device to heat the liquid medium in the input pipe of the secondary circuit of the low-temperature heating reactor based on the current fluid temperature value, the fluid temperature difference between the set fluid temperature value and the heating position of the molten salt circuit heating device, until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value.

[0139] The heating position of the molten salt circuit heating equipment is any position in the input pipe of the secondary circuit of the low-temperature heating reactor, and the heating temperature at the heating position is higher than the fluid temperature difference.

[0140] In an exemplary embodiment, the heating module includes: an acquisition unit, a power determination unit, and a heating unit, wherein:

[0141] The acquisition unit is used to acquire the specific heat capacity of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor at the current temperature and current pressure; and to acquire the mass flow rate of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor.

[0142] The power determination unit is used to determine the heating power of the molten salt circuit heating equipment based on the specific heat capacity of the medium, the mass flow rate of the medium, the fluid temperature difference, and the heating position of the molten salt circuit heating equipment.

[0143] The heating unit is used to heat the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor according to the heating power.

[0144] In an exemplary embodiment, the power determination unit is further configured to map the distance between the heating position of the molten salt circuit heating device and the setting position of the steam generator according to the mapping relationship between distance and temperature, and determine the fluid temperature compensation value; use the sum of the fluid temperature compensation value and the fluid temperature difference value as the temperature adjustment value corresponding to the molten salt circuit heating device; calculate the product of the specific heat capacity of the medium, the mass flow rate of the medium and the temperature adjustment value, and use the product result as the heating power corresponding to the molten salt circuit heating device.

[0145] In an exemplary embodiment, the heating unit is further configured to map the heating power based on the power-flow mapping relationship to obtain the molten salt flow rate corresponding to the heating power; obtain the target control pump speed or the target valve opening of the molten salt circuit heating device according to the molten salt flow rate; control the control pump of the molten salt circuit heating device to rotate according to the target control pump speed, or control the valve opening of the molten salt circuit heating device to adjust to the target valve opening, so as to heat the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor.

[0146] In an exemplary embodiment, the heating unit is further configured to: acquire the specific heat capacity of the molten salt and the temperature difference of the molten salt fluid before and after heating during the process of heating the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor through the molten salt loop heating device; calculate the current heating power of the molten salt loop heating device based on the molten salt flow rate, the specific heat capacity of the molten salt, and the temperature difference of the molten salt fluid; acquire the control pump speed adjustment value of the molten salt loop heating device, or acquire the valve opening adjustment value of the molten salt loop heating device, based on the power difference between the current heating power and the heating demand power corresponding to the set fluid temperature value; adjust the speed of the control pump of the molten salt loop heating device according to the control pump speed adjustment value, or adjust the valve opening of the molten salt loop heating device according to the valve opening adjustment value.

[0147] In an exemplary embodiment, the temperature control device further includes a computing unit and a control unit, wherein:

[0148] The calculation unit is used to calculate the steam temperature difference between the steam temperature requirement of the three-loop output and the output temperature value of the three-loop.

[0149] The control unit is used to control the steam heaters of the three circuits to heat the steam output from the steam generator according to the steam temperature difference, until the output temperature of the three circuits reaches the required steam temperature.

[0150] Each module in the aforementioned temperature control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0151] In one exemplary embodiment, a computer device is provided, including a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement any embodiment of the temperature control method in the first aspect described above.

[0152] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the content of any embodiment of the temperature control method in the first aspect described above.

[0153] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the content of any embodiment of the temperature control method in the first aspect described above.

[0154] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0155] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0156] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0157] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A temperature control method, characterized in that, The method, applied to the secondary loop of a cryogenic heating reactor, includes: If the reactor power of the primary loop of the cryogenic heating reactor fluctuates, or if the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet the user's requirements, the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor is collected. Based on the mapping relationship between the steam temperature output from the three loops and the temperature value of the heating section of the steam generator, the steam temperature requirement output from the three loops is converted to determine the set fluid temperature value of the heating section of the steam generator. Based on the current fluid temperature value, the fluid temperature difference between the set fluid temperature value and the heating position of the molten salt circuit heating device, the molten salt circuit heating device is controlled to heat the liquid medium in the input pipe of the secondary circuit of the low-temperature heating reactor until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value. The heating position of the molten salt circuit heating device is any position of the input pipe of the secondary circuit of the low-temperature heating reactor, and the heating temperature at the heating position is higher than the fluid temperature difference.

2. The method according to claim 1, characterized in that, The method of controlling the molten salt circuit heating device to heat the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor based on the fluid temperature difference between the current fluid temperature value and the set fluid temperature value, and the heating position of the molten salt circuit heating device, includes: The specific heat capacity of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor at the current temperature and pressure is obtained; and the mass flow rate of the fluid medium in the input pipe of the secondary loop of the cryogenic heating reactor is obtained. Based on the specific heat capacity of the medium, the mass flow rate of the medium, the temperature difference of the fluid, and the heating position of the molten salt circuit heating device, the heating power corresponding to the molten salt circuit heating device is determined. The liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor is heated according to the heating power.

3. The method according to claim 2, characterized in that, The step of determining the heating power corresponding to the molten salt circuit heating device based on the specific heat capacity of the medium, the mass flow rate of the medium, the fluid temperature difference, and the heating position of the molten salt circuit heating device includes: Based on the mapping relationship between distance and temperature, the distance between the heating position of the molten salt circuit heating device and the setting position of the steam generator is mapped to determine the fluid temperature compensation value; The sum of the fluid temperature compensation value and the fluid temperature difference value is used as the temperature adjustment value corresponding to the molten salt circuit heating device; Calculate the product of the specific heat capacity of the medium, the mass flow rate of the medium, and the temperature adjustment value, and use the product result as the heating power corresponding to the molten salt circuit heating device.

4. The method according to claim 2, characterized in that, The heating of the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor according to the heating power includes: Based on the mapping relationship between power and flow rate, the heating power is mapped to obtain the molten salt flow rate corresponding to the heating power; Based on the molten salt flow rate, obtain the target control pump speed of the molten salt circuit heating device or the target valve opening of the molten salt circuit heating device; The control pump of the molten salt circuit heating device is controlled to rotate at the target control pump speed, or the valve of the molten salt circuit heating device is controlled to adjust to the target valve opening, so as to heat the fluid medium in the input pipe of the secondary circuit of the cryogenic heating reactor.

5. The method according to claim 4, characterized in that, The method further includes: During the process of heating the liquid medium in the input pipe of the secondary loop of the cryogenic heating reactor through the molten salt loop heating device, the specific heat capacity of the molten salt under the current state and the temperature difference of the molten salt fluid before and after heating are obtained. The current heating power of the molten salt circuit heating device is calculated based on the molten salt flow rate, the molten salt specific heat capacity, and the molten salt fluid temperature difference. Based on the power difference between the current heating power and the heating demand power corresponding to the set fluid temperature value, the control pump speed adjustment value of the molten salt circuit heating equipment is obtained, or the valve opening adjustment value of the molten salt circuit heating equipment is obtained. The speed of the control pump of the molten salt circuit heating equipment is adjusted according to the control pump speed adjustment value, or the valve opening of the molten salt circuit heating equipment is adjusted according to the valve opening adjustment value.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Calculate the steam temperature difference between the required steam temperature output from the three loops and the output temperature values ​​of the three loops; According to the steam temperature difference, the steam heaters of the three circuits are controlled to heat the steam output from the steam generator until the output temperature of the three circuits reaches the required steam temperature.

7. A temperature control device, characterized in that, The device includes: The acquisition module is used to acquire the current fluid temperature value of the heating section of the steam generator between the secondary and tertiary loops of the cryogenic heating reactor when the reactor power of the primary loop of the cryogenic heating reactor fluctuates, or when the steam temperature output from the tertiary loop of the cryogenic heating reactor does not meet the user's requirements. The conversion module is used to convert the steam temperature requirement output by the three loops based on the mapping relationship between the steam temperature output by the three loops and the temperature value of the heating section of the steam generator, and to determine the set fluid temperature value of the heating section of the steam generator. The heating module is used to control the molten salt circuit heating device to heat the liquid medium in the input pipe of the secondary circuit of the low-temperature heating reactor based on the current fluid temperature value, the fluid temperature difference between the set fluid temperature value and the heating position of the molten salt circuit heating device, until the current fluid temperature value of the heating section of the steam generator reaches the set fluid temperature value. The heating position of the molten salt circuit heating device is any position of the input pipe of the secondary circuit of the low-temperature heating reactor, and the heating temperature at the heating position is higher than the fluid temperature difference.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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