Temperature rise control method and system for non-nuclear heating of primary loop of high-temperature gas cooled reactor

Abstract

The invention relates to the technical field of nuclear reactor temperature control, and discloses a temperature rise control method and system for non-nuclear heating of a primary loop of a high-temperature gas cooled reactor, and the method comprises the steps: obtaining a temperature rise rate calculation formula for non-nuclear heating of the primary loop, the method is based on the analysis of the heating power of a primary helium fan of the high-temperature gas cooled reactor and the heat dissipation power of the primary loop in a heat balance state, and the corresponding relation between the primary loop heating rate and the primary loop temperature, the pressure, the environment temperature and the rotating speed of the primary helium fan in the non-nuclear heating period of the primary loop of the high-temperature gas cooled reactor is obtained; based on the real-time primary loop temperature, primary loop pressure and environment temperature, the temperature rise rate of high-temperature gas cooled reactor primary loop non-nuclear heating is controlled by adjusting the rotating speed of a primary helium fan through a calculation formula, and then the target temperature is achieved. According to the method, the temperature rise rate is controlled by utilizing an accurate temperature rise rate calculation formula, so that the stability and controllability of the temperature rise process are ensured, and the safety and reliability of the primary loop system of the high-temperature gas cooled reactor in the non-nuclear heating stage are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear reactor temperature control, and in particular to a temperature rise control method and system for non-nuclear heating of a primary loop of a high-temperature gas-cooled reactor. Background Art

[0002] Nuclear power plants use the primary loop to carry out the huge heat energy generated by the reactor. Pressurized water reactor nuclear power plants use water as the primary loop heat carrier, and high temperature gas-cooled reactors use helium as the primary loop heat carrier. Helium has excellent properties such as large heat capacity, difficult activation and easy purification. Before the reactor is started, the primary loop must be heated to a certain temperature due to test, impurity removal and other working conditions. However, the reactor has not yet started, and the heat from nuclear energy conversion cannot be used to heat the primary loop. Pressurized water reactor nuclear power plants use the heat generated by the primary loop main pump to heat the primary loop.

[0003] The high temperature gas-cooled reactor is equipped with a main helium blower to provide a driving pressure head for the primary helium circulation. In the process of driving the helium circulation, the energy of the main helium blower is finally converted into heat energy, which can be used to heat the primary circuit. The driving power of the main helium blower determines the heating power of the primary circuit, thereby changing the heating rate of the primary circuit to meet the limit requirements of the heating rate of the primary circuit components of the high temperature gas-cooled reactor. However, the prior art only provides qualitative guidance on the heating control of the primary circuit non-nuclear heating, and cannot achieve accurate control of the heating rate of the primary circuit using the main helium blower before starting the high temperature gas-cooled reactor. Summary of the invention

[0004] In view of this, the present invention provides a temperature rise control method and system for non-nuclear heating of a primary circuit of a high temperature gas-cooled reactor, which solves the problem of how to achieve precise control of the temperature rise rate of a primary circuit heated by a main helium blower before starting a high temperature gas-cooled reactor.

[0005] In a first aspect, the present invention provides a method for controlling temperature rise of a non-nuclear heating circuit of a high temperature gas-cooled reactor, the method comprising:

[0006] Obtaining a calculation formula for the heating rate of the primary non-nuclear heating loop, wherein the calculation formula for the heating rate of the primary non-nuclear heating loop is based on an analysis of the heating power of the main helium fan of the high temperature gas-cooled reactor and the heat dissipation power of the primary loop under a thermal equilibrium state, and obtains a corresponding relationship between the primary loop heating rate during the non-nuclear heating of the primary loop of the high temperature gas-cooled reactor and the primary loop temperature, the primary loop pressure, the ambient temperature and the main helium fan speed;

[0007] Obtain the preset target temperature and collect the real-time primary circuit temperature, primary circuit pressure and ambient temperature;

[0008] Based on the real-time primary-loop temperature, primary-loop pressure and ambient temperature, the primary-loop non-nuclear heating heating rate calculation formula is used to control the primary-loop non-nuclear heating heating rate of the high-temperature gas-cooled reactor by adjusting the speed of the main helium fan, and the target temperature is achieved by controlling the heating rate.

[0009] The temperature rise control method for non-nuclear heating of a primary loop of a high-temperature gas-cooled reactor provided in an embodiment of the present invention derives a temperature rise rate calculation formula based on an analysis of the heating power of a main helium fan and the heat dissipation power of a primary loop, clarifies the correspondence between the temperature rise rate of a primary loop and the temperature, pressure, ambient temperature and rotation speed of a main helium fan, can accurately control the temperature rise rate by adjusting the rotation speed of the main helium fan based on real-time monitoring data, avoids adverse effects on the reactor system caused by too fast or too slow temperature rise, ensures the stability and controllability of the temperature rise process, and after obtaining a preset target temperature, uses an accurate temperature rise rate calculation formula to control the temperature rise rate in combination with the real-time collected primary loop temperature, pressure and ambient temperature data, so that the system can reliably reach the target temperature, meet the temperature requirements of different operating stages of the reactor, provide suitable initial temperature conditions for subsequent normal operation or experiments, and improve the safety and reliability of the primary loop system of the high-temperature gas-cooled reactor in the non-nuclear heating stage.

[0010] In an optional embodiment, the correspondence between the primary circuit heating rate during the non-nuclear heating of the primary circuit of the high temperature gas-cooled reactor and the primary circuit temperature, primary circuit pressure, ambient temperature and main helium fan speed obtained based on the analysis of the heating power of the main helium fan of the high temperature gas-cooled reactor and the heat dissipation power of the primary circuit under the thermal equilibrium state includes:

[0011] Based on the corresponding relationship between the heating power of the main helium fan and the rotation speed of the main helium fan, the primary circuit pressure, and the primary circuit temperature, a calculation formula for the heating power of the main helium fan is obtained as the first calculation formula;

[0012] Based on the thermal balance analysis of the high temperature gas-cooled reactor and the corresponding relationship between the heat dissipation power, the primary circuit temperature and the ambient temperature, a calculation formula for the total heat dissipation power of the primary circuit under the thermal balance state is obtained as the second calculation formula;

[0013] Based on the power consumption analysis of the main helium fan heating power during the non-nuclear heating of the reactor primary loop, the relationship between the power consumed by the heating of each component of the primary loop and the heating power and the total heat dissipation work is obtained as the third calculation formula;

[0014] The relationship between the power consumed by the reactor primary circuit heating and the reactor heating rate is used as the fourth calculation formula;

[0015] Based on the first calculation formula, the second calculation formula, the third calculation formula and the fourth calculation formula, the corresponding relationship between the primary circuit heating rate and the primary circuit temperature, the primary circuit pressure, the ambient temperature and the main helium fan speed during the non-nuclear heating of the primary circuit of the high-temperature gas-cooled reactor is obtained.

[0016] The embodiment of the present invention is based on the analysis of the heating power of the main helium fan of the high-temperature gas-cooled reactor and the heat dissipation power of the primary loop under the thermal equilibrium state, and the corresponding relationship between the heating rate and the primary loop temperature, the primary loop pressure, the ambient temperature and the main helium fan speed obtained by integrating these four calculation formulas, so as to provide a comprehensive control basis for the non-nuclear heating process of the primary loop of the entire high-temperature gas-cooled reactor. The operator can accurately adjust the main helium fan speed according to the real-time monitored primary loop temperature, pressure and ambient temperature to achieve precise control of the heating rate.

[0017] In an optional implementation, the first calculation formula is:

[0018]

[0019] Where P JEB where is the power of the main helium blower; p is the primary circuit pressure; n is the speed of the main helium blower; T is the primary circuit temperature; C1 is a constant related to the state of the reactor primary circuit, which is obtained from the main helium blower performance test.

[0020] The embodiment of the present invention quantifies the power of the main helium blower through the first calculation formula. By linking it with the primary circuit pressure, the main helium blower speed, the primary circuit temperature and the constant, the operator can predict the power output of the main helium blower according to the specific values ​​of these parameters.

[0021] In an optional implementation manner, the second calculation formula is:

[0022] P0=C2(T-T0)

[0023] In the formula, P0 is the total heat dissipation power of the primary circuit; T is the primary circuit temperature; T0 is the ambient temperature; C2 is a constant related to the state of the primary circuit of the reactor, which represents the sum of the reciprocals of the thermal resistances of each heat dissipation path.

[0024] The second calculation formula of the embodiment of the present invention quantifies the total heat dissipation power of a circuit, and clearly shows the relationship between the heat dissipation power and these factors through the circuit temperature, ambient temperature and constant, so that the staff can intuitively understand how the heat dissipation power changes with the changes in the circuit temperature and ambient temperature.

[0025] In an optional implementation, the third calculation formula is:

[0026] P 升 =P JEB -P0;

[0027] The fourth calculation formula is:

[0028] P 升 =C3T D ;

[0029] Where P 升 is the thermal power consumed by heating up the components of a circuit; T D is the reactor heating rate; C3 is a constant related to the state of the reactor primary loop.

[0030] The embodiment of the present invention uses the third calculation formula to express the thermal power consumed by the heating of each component of the first circuit, so that the amount of heat absorbed by each component during the heating process can be quantitatively understood. Through this formula, the energy requirements of different components during the heating process can be analyzed, which is helpful to evaluate the performance of the components under different working conditions; the fourth calculation formula quantitatively describes the reactor heating rate, and provides a clear relationship by linking the heating rate with a constant and the thermal power consumed by the heating of each component of the first circuit. The heating rate can be adjusted by controlling the thermal power consumed by the components during the heating process.

[0031] In an optional embodiment, the heating rate calculation formula of the primary non-nuclear heating is:

[0032]

[0033] Where, T D is the reactor heating rate; p is the primary loop pressure; n is the main helium blower speed; T is the primary loop temperature; T0 is the ambient temperature; C1, C2, C3 are all constants related to the state of the reactor primary loop.

[0034] The heating rate calculation formula for the primary non-nuclear heating circuit derived in the embodiment of the present invention establishes corresponding relationships among the primary pressure, the main helium fan speed, the primary temperature and the ambient temperature, as well as constants related to the primary state of the reactor, thereby providing a comprehensive control basis for the primary non-nuclear heating process of the entire high-temperature gas-cooled reactor. The operator can accurately adjust the main helium fan speed according to the primary temperature, pressure and ambient temperature monitored in real time, thereby achieving comprehensive and precise control of the reactor heating rate.

[0035] In a second aspect, the present invention provides a temperature rise control system for non-nuclear heating of a primary loop of a high temperature gas-cooled reactor, comprising:

[0036] A heating rate calculation formula acquisition module is used to obtain a heating rate calculation formula for a primary circuit non-nuclear heating, wherein the heating rate calculation formula for the primary circuit non-nuclear heating is based on an analysis of the heating power of a main helium blower of a high temperature gas-cooled reactor and the heat dissipation power of the primary circuit under a thermal equilibrium state, and obtains a corresponding relationship between the primary circuit heating rate during the non-nuclear heating of a primary circuit of a high temperature gas-cooled reactor and the primary circuit temperature, primary circuit pressure, ambient temperature and main helium blower speed;

[0037] The target thermometer real-time data acquisition module is used to obtain the preset target temperature and collect the real-time primary circuit temperature, primary circuit pressure and ambient temperature;

[0038] The temperature rise control module is used to control the temperature rise rate of the primary non-nuclear heating circuit of the high-temperature gas-cooled reactor by adjusting the speed of the main helium fan based on the real-time primary temperature, primary pressure and ambient temperature, using the temperature rise rate calculation formula of the primary non-nuclear heating circuit, and achieving the target temperature by controlling the temperature rise rate.

[0039] In a third aspect, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to execute the temperature rise control method for non-nuclear heating of a primary loop of a high-temperature gas-cooled reactor according to the first aspect or any corresponding embodiment thereof.

[0040] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the temperature rise control method for non-nuclear heating of a primary loop of a high-temperature gas-cooled reactor according to the first aspect or any corresponding embodiment thereof.

[0041] In a fifth aspect, the present invention provides a computer program product, comprising computer instructions for causing a computer to execute the temperature rise control method for non-nuclear heating of a primary loop of a high-temperature gas-cooled reactor according to the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is a schematic flow chart of a temperature rise control method for non-nuclear heating of a primary loop of a high temperature gas-cooled reactor according to an embodiment of the present invention;

[0044] Figure 2This is the schematic diagram of the primary heating circuit of the main helium blower of the high temperature gas-cooled reactor;

[0045] Figure 3 It is a flow chart of another method for controlling temperature rise of non-nuclear heating of a primary loop of a high temperature gas-cooled reactor according to an embodiment of the present invention;

[0046] Figure 4 is a structural block diagram of a temperature rise control system for non-nuclear heating of a primary loop of a high temperature gas-cooled reactor according to an embodiment of the present invention;

[0047] Figure 5 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention.

[0049] 1- Reactor body; 2- Steam generator; 3- Main helium blower; 4- Hot gas duct. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0051] In order to achieve precise control of the non-nuclear heating temperature rise of the primary loop of a high-temperature gas-cooled reactor, a temperature rise control method for the non-nuclear heating temperature rise of the primary loop of a high-temperature gas-cooled reactor is provided in this embodiment. Figure 1 is a flow chart of a temperature rise control method for non-nuclear heating of a primary loop of a high temperature gas-cooled reactor according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0052] S101, obtaining a calculation formula for the heating rate of a primary non-nuclear heating circuit. The calculation formula for the heating rate of a primary non-nuclear heating circuit is based on an analysis of the heating power of a main helium fan of a high-temperature gas-cooled reactor and the heat dissipation power of the primary circuit under a thermal equilibrium state, and obtains a correspondence between the heating rate of a primary circuit during non-nuclear heating of a primary circuit of a high-temperature gas-cooled reactor and the primary circuit temperature, primary circuit pressure, ambient temperature, and the speed of the main helium fan.

[0053] like Figure 2The main helium blower of the high temperature gas-cooled reactor is shown in the schematic diagram of heating the primary circuit. The reactor body 1 is the core part of the nuclear reactor, where nuclear fission reaction is carried out to generate heat. The nuclear fuel undergoes a chain reaction in the reactor body, releasing a large amount of heat energy. The function of the steam generator 2 is to transfer the heat generated by the reactor body to the water in the secondary circuit, so that the water becomes steam. In this process, the high temperature helium in the primary circuit transfers the heat to the water in the secondary circuit through the heat transfer component of the steam generator, realizing the conversion and transfer of heat. The main helium blower 3 plays a role in promoting the circulation of helium in the primary circuit of the high temperature gas-cooled reactor. Helium, as a coolant, absorbs heat from the steam generator under the drive of the main helium blower, enters the reactor body to absorb the heat generated by nuclear fission, and then returns to the steam generator to release heat, and so on. The cycle ensures that the heat of the primary circuit can be continuously transferred. The hot gas duct 4 is used to connect the reactor body and the steam generator. It is the circulation channel of the high temperature helium, ensuring that the helium circulates smoothly in the primary circuit. The embodiment of the present invention analyzes the heating power of the main helium fan and the heat dissipation power of the primary circuit under the thermal equilibrium state to obtain the corresponding relationship between the primary circuit heating rate and the primary circuit temperature, pressure, ambient temperature and the main helium fan speed. This analysis based on in-depth physical principles enables the heating rate calculation formula to accurately reflect the actual operation of the system, thereby providing a theoretical basis for accurately controlling the heating rate.

[0054] S102, obtaining a preset target temperature and collecting real-time primary circuit temperature, primary circuit pressure and ambient temperature.

[0055] The embodiment of the present invention sets the target temperature in advance, so that the entire temperature rise control process has a clear end point. Around this goal, the temperature rise rate is controlled by continuously adjusting the speed of the main helium blower until the target temperature is reached, ensuring that the primary circuit temperature can accurately reach the set value and meet the specific temperature requirements of the high temperature gas-cooled reactor at different operating stages.

[0056] S103, based on the real-time primary-loop temperature, primary-loop pressure and ambient temperature, using the primary-loop non-nuclear heating heating rate calculation formula, controls the primary-loop non-nuclear heating heating rate of the high-temperature gas-cooled reactor by adjusting the speed of the main helium fan, and reaches the target temperature by controlling the heating rate.

[0057] The embodiment of the present invention utilizes the primary circuit temperature, primary circuit pressure and ambient temperature data collected in real time, combined with the heating rate calculation formula, and dynamically controls the heating rate by adjusting the rotation speed of the main helium blower. It can timely and accurately adjust the heating process according to changes in actual operating conditions, ensure that the heating rate is always within the desired range, avoid damage to the core and related equipment caused by excessive temperature fluctuations, solve the problem of controlling the heating rate of the primary circuit heated by the main helium blower before the start-up of the high-temperature gas-cooled reactor, and provide a basis for process control during the primary circuit heating process before the start-up of the high-temperature gas-cooled reactor.

[0058] In a specific embodiment, in step S101, based on the analysis of the heating power of the main helium fan of the high temperature gas-cooled reactor and the heat dissipation power of the primary circuit under the thermal equilibrium state, the corresponding relationship between the primary circuit heating rate during the non-nuclear heating of the primary circuit of the high temperature gas-cooled reactor and the primary circuit temperature, the primary circuit pressure, the ambient temperature and the main helium fan speed is obtained, and then the heating rate calculation formula of the primary circuit non-nuclear heating is obtained, such as Figure 3 As shown, the following steps are included:

[0059] The embodiment of the present invention is based on the analysis of the heating power of the main helium blower of the high temperature gas-cooled reactor and the heat dissipation power of the primary circuit under the thermal equilibrium state, and obtains the corresponding relationship between the primary circuit heating rate during the non-nuclear heating of the primary circuit of the high temperature gas-cooled reactor and the primary circuit temperature, primary circuit pressure, ambient temperature and the main helium blower speed, such as Figure 2 As shown, the specific steps include:

[0060] S1011, based on the corresponding relationship between the heating power of the main helium blower and the rotation speed of the main helium blower, the primary circuit pressure, and the primary circuit temperature, a calculation formula for the heating power of the main helium blower is obtained as a first calculation formula.

[0061] Specifically, the embodiment of the present invention performs dimensional analysis based on the similarity principle of fluid mechanics. The heating power of the main helium fan is proportional to the cube of the speed of the main helium fan, proportional to the pressure of the primary circuit, and inversely proportional to the temperature of the primary circuit. The heating power P of the main helium fan can be obtained. JEB The calculation formula is:

[0062]

[0063] Where P JEB The power of the main helium blower, kW; p is the primary circuit pressure, MPa.a; n is the main helium blower speed, rpm; T is the primary circuit temperature, K; C1 is a constant related to the primary circuit state of the reactor, kW·K·min3 / MPa, which is obtained from the main helium blower performance test. Under the initial core state, C1=6.902*10-6kW·K·min3 / MPa.

[0064] The above formula quantifies the power of the main helium blower. By linking it with the primary circuit pressure, the main helium blower speed, the primary circuit temperature and constants, operators can predict the power output of the main helium blower based on the specific values ​​of these parameters. For example, during the operation of the reactor, when the primary circuit pressure and temperature are known and the main helium blower speed is determined, the power of the main helium blower can be accurately calculated.

[0065] S1012, based on the thermal balance analysis of the high temperature gas-cooled reactor, combined with the corresponding relationship between the heat dissipation power, the primary circuit temperature and the ambient temperature, a calculation formula for the total heat dissipation power of the primary circuit under the thermal balance state is obtained as the second calculation formula.

[0066] Specifically, through the heat balance analysis of the high temperature gas-cooled reactor, it can be found that the heat of the primary circuit is dissipated through the following ways:

[0067] a. Dissipated to the atmosphere through the waste heat removal system, the heat dissipation power is P JNA ;

[0068] b. The heat is sent to the equipment cooling water through the shield cooling water system, and the heat dissipation power is P JNB10 , P JNB20 , are the powers dissipated to the cooling water through the reactor compartment and the evaporator compartment respectively;

[0069] c. The heat is dissipated to the reactor hall through the pressure vessel support cooling system, and the heat dissipation power is P JNC ;

[0070] d. Heat is dissipated through the helium purification system, and the heat dissipation power is P KBE10 ;

[0071] e. The heat is dissipated through the emergency cooling and dehumidification column, and the heat dissipation power is P KBE30 ;

[0072] f. The heat is dissipated to the cold water system through the main helium fan cooling system, and the heat dissipation power is P JEB,KAA ;

[0073] g. The heat dissipated to the environment through other channels such as cabin concrete, top cover, primary pressure vessel wall, etc., the heat dissipation power is P 散 .

[0074] When the primary circuit and the reactor are in thermal equilibrium, the temperature of the components of the primary circuit is stable, the total heat dissipation power P0 is equal to the sum of the above heat dissipation powers, and P0 is equal to the main helium fan heating power P JEB Equal, the total heat dissipation power P0 is calculated by the following formula:

[0075] P0=P JNA +P JNB10 +P JNB20 +P JNC +P KBE10 +P KBE30 +P JEB,KAA +P 散 (2)

[0076] The heat source of each heat dissipation path mentioned above is the primary circuit, and the final heat sink is the ambient atmosphere. However, due to the different heat dissipation paths, different thermal resistances are formed. According to the principle of heat transfer, it can be known that the heat dissipation power Pi of each heat dissipation path is proportional to the difference between the primary circuit temperature T and the ambient temperature T0, and inversely proportional to the thermal resistance λi of the heat dissipation path, that is:

[0077]

[0078] The total heat dissipation power P0 can be calculated by formula 4):

[0079] P0 = C2(T - T0) (4)

[0080] In the formula, P0 is the total heat dissipation power of the primary circuit, kW; T is the primary circuit temperature; T0 is the ambient temperature, K; C2 is a constant related to the state of each system of the reactor, which represents the sum of the reciprocals of the thermal resistances of each heat dissipation path, obtained by experiment, kW / K; when the relevant systems of the primary circuit of the reactor are in normal operation and the accident cooling and dehumidification train is put into operation, C2 is 8.2kW / K; when the relevant systems of the primary circuit of the reactor are in normal operation and the accident cooling and dehumidification train is not put into operation, C2 is 6.8kW / K.

[0081] Formula (2) considers the influence of two key factors, the primary circuit temperature and the ambient temperature, on the heat dissipation power. The primary circuit temperature is the power source of heat dissipation. The higher the temperature, the greater the temperature difference with the environment, and the stronger the heat dissipation tendency. The ambient temperature is the external condition of heat dissipation, which determines the difficulty of heat transfer. This consideration of temperature factors conforms to the basic principle of heat transfer and can accurately reflect the actual changes in the primary circuit heat dissipation power under different temperature environments. The total heat dissipation power of the primary circuit is quantified by the formula. The relationship between the heat dissipation power and these factors is clearly shown through the primary circuit temperature, ambient temperature and constant, so that the staff can intuitively understand how the heat dissipation power changes with the changes in the primary circuit temperature and ambient temperature. For example, when the primary circuit temperature rises and the ambient temperature remains unchanged, it can be easily judged according to the formula that the heat dissipation power will increase.

[0082] S1013, based on the power consumption analysis of the main helium fan heating power during the non-nuclear heating of the reactor primary loop, the relationship between the power consumed by the heating of each component of the primary loop and the heating power and the total heat dissipation work is obtained as the third calculation formula.

[0083] During the non-nuclear heating of the reactor primary loop, the heating power P of the main helium fan is JEB The heat consumed by the reactor is P0, which is the heat dissipated by the reactor to maintain the temperature of the reactor primary circuit, and the heat consumed by the heating of the components of the primary circuit is P0. 升 , we can get formula (5):

[0084] P升 = P JEB -P0 (5)

[0085] The heat power consumed by the heating of each component in a circuit is expressed by formula (5), so that the heat absorbed by each component during the heating process can be quantitatively understood.

[0086] S1014, using the relationship between the power consumed by the reactor primary circuit heating and the reactor heating rate as the fourth calculation formula.

[0087] Specifically, the relationship between the power consumed by the reactor primary loop heating and the reactor heating rate is shown in formula (6):

[0088] P 升 = C3T D (6)

[0089] Where P 升 is the thermal power consumed by heating up each component of the primary circuit, kW, calculated by formula (5); T D is the reactor heating rate, K / h; C3 is a constant, kW·h / K, obtained from experiments. In one embodiment, when the primary loop of a high temperature gas-cooled reactor is heated from 330K to 520K, C3 is 237kW·h / K.

[0090] The reactor heating rate is quantitatively described by formula (6). By linking the heating rate with a constant and the thermal power consumed by the heating of each component in the primary circuit, a clear relationship is provided. The heating rate can be adjusted by controlling the thermal power consumed by the components, providing a basis for the subsequent derivation of the primary circuit heating rate calculation formula.

[0091] S1015, based on the first calculation formula, the second calculation formula, the third calculation formula, and the fourth calculation formula, obtain the correspondence between the primary circuit heating rate during the non-nuclear heating of the primary circuit of the high-temperature gas-cooled reactor and the primary circuit temperature, the primary circuit pressure, the ambient temperature, and the main helium fan speed.

[0092] Specifically, from equations (1), (4), (5), and (6), it can be seen that the primary loop heating rate T of the high-temperature gas-cooled reactor during the non-nuclear heating period is D It can be calculated by the following formula:

[0093]

[0094] Where, T D is the reactor heating rate, K / h; p: primary circuit pressure, MPa.a; n: main helium blower speed, rpm; T: primary circuit temperature, K; T0: ambient temperature, K; C1, C2, C3 are all constants related to the state of the reactor primary circuit.

[0095] It can be seen from formula (7) that according to the primary loop temperature, pressure and ambient temperature, the reactor can obtain different heating rates by adjusting the speed of the main helium blower. In practical application, the heating rate can be controlled by combining the real-time collected primary loop temperature, pressure and ambient temperature data and using an accurate heating rate calculation formula, so that the system can reliably reach the target temperature and meet the temperature requirements of the reactor in different operating stages, providing suitable initial temperature conditions for subsequent normal operation or experiments, thereby improving the safety and reliability of the primary loop system of the high-temperature gas-cooled reactor in the non-nuclear heating stage.

[0096] In this embodiment, a temperature rise control system for non-nuclear heating of a primary loop of a high-temperature gas-cooled reactor is also provided. The system is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the system described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0097] This embodiment provides a temperature rise control system for non-nuclear heating of a primary circuit of a high temperature gas-cooled reactor, such as Figure 4 As shown, including:

[0098] A heating rate calculation formula acquisition module 401 is used to acquire a heating rate calculation formula for a primary non-nuclear heating loop. The heating rate calculation formula for a primary non-nuclear heating loop is based on an analysis of the heating power of a main helium fan of a high temperature gas-cooled reactor and the heat dissipation power of the primary loop under a thermal equilibrium state, and obtains a corresponding relationship between a primary loop heating rate during a primary loop non-nuclear heating period of a high temperature gas-cooled reactor and the primary loop temperature, primary loop pressure, ambient temperature, and a main helium fan speed;

[0099] The target thermometer real-time data acquisition module 402 is used to obtain the preset target temperature and collect the real-time primary circuit temperature, primary circuit pressure and ambient temperature;

[0100] The temperature rise control module 403 is used to control the temperature rise rate of the primary non-nuclear heating circuit of the high-temperature gas-cooled reactor by adjusting the speed of the main helium fan based on the real-time primary temperature, primary pressure and ambient temperature, using the primary non-nuclear heating temperature rise rate calculation formula, and achieve the target temperature by controlling the temperature rise rate.

[0101] In some optional embodiments, the heating rate calculation formula acquisition module 401 obtains the corresponding relationship between the primary circuit heating rate during the non-nuclear heating of the primary circuit of the high-temperature gas-cooled reactor and the primary circuit temperature, primary circuit pressure, ambient temperature and main helium fan speed based on the analysis of the heating power of the main helium fan of the high-temperature gas-cooled reactor and the heat dissipation power of the primary circuit under the thermal equilibrium state, including:

[0102] Based on the corresponding relationship between the heating power of the main helium fan and the rotation speed of the main helium fan, the primary circuit pressure, and the primary circuit temperature, a calculation formula for the heating power of the main helium fan is obtained as the first calculation formula;

[0103] Based on the thermal balance analysis of the high temperature gas-cooled reactor and the corresponding relationship between the heat dissipation power, the primary circuit temperature and the ambient temperature, a calculation formula for the total heat dissipation power of the primary circuit under the thermal balance state is obtained as the second calculation formula;

[0104] Based on the power consumption analysis of the main helium fan heating power during the non-nuclear heating of the reactor primary loop, the relationship between the power consumed by the heating of each component of the primary loop and the heating power and the total heat dissipation work is obtained as the third calculation formula;

[0105] The relationship between the power consumed by the reactor primary circuit heating and the reactor heating rate is used as the fourth calculation formula;

[0106] Based on the first calculation formula, the second calculation formula, the third calculation formula and the fourth calculation formula, the corresponding relationship between the primary loop heating rate and the primary loop temperature, the primary loop pressure, the ambient temperature and the main helium fan speed during the non-nuclear heating of the primary loop of the high temperature gas-cooled reactor is obtained.

[0107] In some optional implementations, the first calculation formula is:

[0108]

[0109] Where P JEB where is the power of the main helium blower; p is the primary circuit pressure; n is the speed of the main helium blower; T is the primary circuit temperature; C1 is a constant related to the state of the reactor primary circuit, which is obtained from the main helium blower performance test.

[0110] In some optional implementations, the second calculation formula is:

[0111] P0=C2(T-T0)

[0112] In the formula, P0 is the total heat dissipation power of the primary circuit; T is the primary circuit temperature; T0 is the ambient temperature; C2 is a constant related to the state of the primary circuit of the reactor, which represents the sum of the reciprocals of the thermal resistances of each heat dissipation path and is obtained by experiment.

[0113] In some optional implementations, the third calculation formula is:

[0114] P 升 =P JEB -P0;

[0115] The fourth calculation formula is:

[0116] P 升 =C3T D ;

[0117] Where P 升 is the thermal power consumed by heating up the components of a circuit; T D is the reactor heating rate; C3 is a constant related to the state of the reactor primary loop.

[0118] In some optional embodiments, the heating rate calculation formula of the primary non-nuclear heating is:

[0119]

[0120] Where, T D is the reactor heating rate, K / h; p: primary circuit pressure, MPa.a; n: main helium blower speed, rpm; T: primary circuit temperature, K; T0: ambient temperature, K; C1, C2, C3 are all constants related to the state of the reactor primary circuit.

[0121] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0122] The temperature rise control system for the non-nuclear heating of the primary loop of the high-temperature gas-cooled reactor in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0123] The embodiment of the present invention also provides a computer device having the above Figure 4 The temperature rise control system of the non-nuclear heating of the primary circuit of the high temperature gas-cooled reactor is shown.

[0124] See also Figure 5 , Figure 5 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Figure 5As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 5 A processor 10 is taken as an example.

[0125] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0126] The memory 20 stores instructions executable by at least one processor 10, so that at least one processor 10 executes the method shown in the above embodiment.

[0127] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0128] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0129] The computer device further comprises a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0130] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor central control system or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0131] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0132] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A temperature rise control method for non-nuclear heating of a primary loop of a high temperature gas-cooled reactor, characterized in that: include: Obtaining a calculation formula for the heating rate of the primary non-nuclear heating loop, wherein the calculation formula for the heating rate of the primary non-nuclear heating loop is based on an analysis of the heating power of the main helium fan of the high temperature gas-cooled reactor and the heat dissipation power of the primary loop under a thermal equilibrium state, and obtains a corresponding relationship between the primary loop heating rate during the non-nuclear heating of the primary loop of the high temperature gas-cooled reactor and the primary loop temperature, the primary loop pressure, the ambient temperature and the main helium fan speed; Obtain the preset target temperature and collect the real-time primary circuit temperature, primary circuit pressure and ambient temperature; Based on the real-time primary-loop temperature, primary-loop pressure and ambient temperature, the primary-loop non-nuclear heating heating rate calculation formula is used to control the primary-loop non-nuclear heating heating rate of the high-temperature gas-cooled reactor by adjusting the speed of the main helium fan, and the target temperature is achieved by controlling the heating rate.

2. The method according to claim 1, characterized in that The corresponding relationship between the primary circuit heating rate and the primary circuit temperature, primary circuit pressure, ambient temperature and main helium fan speed during the non-nuclear heating of the primary circuit of the high temperature gas-cooled reactor obtained based on the analysis of the heating power of the main helium fan of the high temperature gas-cooled reactor and the heat dissipation power of the primary circuit under the thermal equilibrium state includes: Based on the corresponding relationship between the heating power of the main helium fan and the rotation speed of the main helium fan, the primary circuit pressure, and the primary circuit temperature, a calculation formula for the heating power of the main helium fan is obtained as the first calculation formula; Based on the thermal balance analysis of the high temperature gas-cooled reactor and the corresponding relationship between the heat dissipation power, the primary circuit temperature and the ambient temperature, a calculation formula for the total heat dissipation power of the primary circuit under the thermal balance state is obtained as the second calculation formula; Based on the power consumption analysis of the main helium fan heating power during the non-nuclear heating of the reactor primary loop, the relationship between the power consumed by the heating of each component of the primary loop and the heating power and the total heat dissipation work is obtained as the third calculation formula; The relationship between the power consumed by the reactor primary circuit heating and the reactor heating rate is used as the fourth calculation formula; Based on the first calculation formula, the second calculation formula, the third calculation formula and the fourth calculation formula, the corresponding relationship between the primary circuit heating rate and the primary circuit temperature, the primary circuit pressure, the ambient temperature and the main helium fan speed during the non-nuclear heating of the primary circuit of the high-temperature gas-cooled reactor is obtained.

3. The method according to claim 2, characterized in that The first calculation formula is: Where P JEB where is the power of the main helium blower; p is the primary circuit pressure; n is the speed of the main helium blower; T is the primary circuit temperature; C1 is a constant related to the state of the reactor primary circuit, which is obtained from the main helium blower performance test.

4. The method according to claim 2, characterized in that: The second calculation formula: P0=C2(T-T0) In the formula, P0 is the total heat dissipation power of the primary circuit; T is the primary circuit temperature; T0 is the ambient temperature; C2 is a constant related to the state of the primary circuit of the reactor, which represents the sum of the reciprocals of the thermal resistances of each heat dissipation path.

5. The method according to claim 4, characterized in that The third calculation formula is: P 升 =P JEB -P0; The fourth calculation formula is: P 升 =C3T D ; Where P 升 T is the thermal power consumed by heating up the components of a circuit; D is the reactor heating rate; C3 is a constant related to the state of the reactor primary loop.

6. The method according to claim 1 or 5, characterized in that: The calculation formula for the heating rate of the primary non-nuclear heating circuit is: Where, T D is the reactor heating rate; p is the primary loop pressure; n is the main helium blower speed; T is the primary loop temperature; T0 is the ambient temperature; C1, C2, C3 are all constants related to the state of the reactor primary loop.

7. A temperature rise control method system for non-nuclear heating of a primary circuit of a high temperature gas-cooled reactor, characterized in that: include: A heating rate calculation formula acquisition module is used to obtain a heating rate calculation formula for a primary non-nuclear heating loop, wherein the heating rate calculation formula for the primary non-nuclear heating loop is based on an analysis of the heating power of a main helium blower of a high temperature gas-cooled reactor and the heat dissipation power of the primary blower under a thermal equilibrium state, and obtains a corresponding relationship between the primary heating rate of a primary blower during the non-nuclear heating of a primary blower of a high temperature gas-cooled reactor and the primary temperature, primary pressure, ambient temperature and rotation speed of the main helium blower; The target thermometer real-time data acquisition module is used to obtain the preset target temperature and collect the real-time primary circuit temperature, primary circuit pressure and ambient temperature; The temperature rise control module is used to control the temperature rise rate of the primary non-nuclear heating circuit of the high-temperature gas-cooled reactor by adjusting the speed of the main helium fan based on the real-time primary temperature, primary pressure and ambient temperature, using the temperature rise rate calculation formula of the primary non-nuclear heating circuit, and achieving the target temperature by controlling the temperature rise rate.

8. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the temperature rise control method for non-nuclear heating of a primary loop of a high-temperature gas-cooled reactor according to any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the temperature rise control method for non-nuclear heating of a primary loop of a high-temperature gas-cooled reactor according to any one of claims 1 to 6.

10. A computer program product, characterized in that The method comprises computer instructions for causing a computer to execute the temperature rise control method for non-nuclear heating of a primary loop of a high temperature gas-cooled reactor according to any one of claims 1 to 6.

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