Reactor power simulator

Abstract

The present application discloses a reactor power simulation device, relating to the field of nuclear power technology. The device is used for debugging a reactor power regulation system. The device includes a reactor simulator, an adjusting resistor, a deceleration device, and a recorder. The resistance value of the adjusting resistor serves as an input signal for the reactor simulator. The reactor simulator outputs a current signal to the power regulator based on the input signal, so that the power regulator amplifies and compares the current signal and then outputs a fixed value deviation signal to the reactor power regulation system. The reactor power regulation system outputs a drive signal to the adjusting rod transmission device based on the fixed value deviation signal, so that the adjusting rod transmission device changes the resistance value of the adjusting resistor via the deceleration device. The reactor simulator is also configured to output a voltage signal proportional to the reactor power to the recorder. The recorder is configured to record the reactor power of the reactor power regulation system during the debugging process based on the voltage signal, thereby obtaining the debugging results of the reactor power regulation system.

Description

Technical Field

[0001] The present application relates to the field of nuclear power technology, and in particular to a reactor power simulation device. Background Art

[0002] In the nuclear energy sector, the reactor power regulation system plays a key role in ensuring stable and safe reactor operation. Its primary responsibility is to monitor and adjust the reactor's power to maintain it at the specified value. When a reactivity disturbance occurs in the reactor, the automatic power regulation system controls the movement of the regulating rods through the regulating rod actuator to offset the change in reactivity, thereby maintaining the reactor's power.

[0003] Before a reactor power regulation system is put into operation, its dynamic performance needs to be tested to verify its ability to function properly during reactor operation. Currently, offline testing is the primary method used to debug reactor power regulation systems to verify their dynamic performance meets the requirements for reactor power self-stabilization. This involves inputting preset signals or disturbances into the power regulation system while the reactor is not operating, and observing the system's response to generate system debugging results.

[0004] While offline testing methods can achieve the goal of debugging the reactor power regulation system to a certain extent, they require a long time to prepare and execute, are complex and time-consuming to operate, and have low debugging efficiency. Furthermore, during offline testing, although the reactor is not in operation, certain safety hazards still exist, requiring constant precautions against unexpected damage or potential risks. Summary of the Invention

[0005] In view of this, an embodiment of the present application provides a reactor power simulation device, which is mainly used to solve the technical problems of low efficiency and great safety hazards in debugging the reactor power regulation system.

[0006] According to one aspect of the present application, a reactor power simulation device is provided, which is used to debug a reactor power regulation system. The reactor power simulation device includes a reactor simulator, a regulating resistor, a deceleration device, and a recorder, wherein:

[0007] The deceleration device is connected between the regulating rod transmission device of the reactor power regulation system and the regulating resistor, the output end of the regulating resistor is connected to the input end of the reactor simulator, the current signal output end of the reactor simulator is connected to the signal input end of the reactor power regulation system through a power regulator, and the voltage signal output end of the reactor simulator is connected to the recorder;

[0008] Among them, the resistance of the regulating resistor is used as the input signal of the reactor simulator. The reactor simulator is used to output a current signal to the power regulator based on the input signal, so that the power regulator amplifies and compares the current signal and then outputs a fixed value deviation signal to the reactor power regulation system. The reactor power regulation system outputs a driving signal to the regulating rod transmission device based on the fixed value deviation signal, so that the regulating rod transmission device changes the resistance of the regulating resistor through the deceleration device; the reactor simulator is also used to output a voltage signal proportional to the reactor power to the recorder, and the recorder is used to record the reactor power of the reactor power regulation system during the debugging process according to the voltage signal to obtain the debugging result of the reactor power regulation system.

[0009] In one embodiment, the reactor simulator is composed of an analog circuit, which is used to simulate the reactor dynamic equations containing six groups of delayed neutrons, and output the voltage signal for simulating reactor power, and output the current signal for simulating ionization chamber current, wherein the reactor dynamic mode is:

[0010]

[0011] Where n is the number of neutrons in the core; C i is the concentration of precursor nuclei in the i-th group of delayed neutrons in the core; ρ is the reactivity of the reactor; β is the sum of the effective fractions of delayed neutrons; β i is the effective fraction of delayed neutrons in group i; l * is the effective lifetime of neutrons in the core and reflector; i is the delayed neutron decay constant of group i.

[0012] In one embodiment, the reactor simulator changes the constants of any group of delayed neutrons by changing the resistance value of the resistor and the capacitance value of the capacitor in the simulation circuit to change the effective fraction of delayed neutrons β i and the delayed neutron decay constant λ i .

[0013] In one embodiment, a switching switch is provided inside the reactor simulator, and the switching switch is used to switch the resistance value of the resistor in the simulation circuit to cause a step change in the output to simulate a step change in reactivity.

[0014] In one embodiment, the adjusting resistor is a multi-turn rotary potentiometer, which simulates continuous changes in responsiveness through rotation.

[0015] In one embodiment, the regulating rod transmission device of the reactor power regulating system drives the multi-turn rotary potentiometer to rotate through a reduction device to simulate the movement of the regulating rod in the reactor.

[0016] In one embodiment, the regulating resistor is connected to the input terminal of the reactor simulator via a wire, and the resistance of the regulating resistor is used to simulate reactivity changes to change the current signal and voltage signal output by the reactor simulator.

[0017] In one embodiment, the deceleration device includes a connection component with a deceleration function, and the connection component is used to connect the adjustment resistor and the transmission mechanism in the adjustment rod transmission device.

[0018] In one embodiment, the regulating rod transmission device includes a drive motor, a motor reduction box and a transverse transmission shaft, wherein the input end of the drive motor is connected to the output end of the reactor power regulation system, the output end of the drive motor is connected to the motor reduction box, the motor reduction box is connected to the transverse transmission shaft, and the transverse transmission shaft is connected to the regulating resistor through the reduction device; wherein the drive motor is used to drive the transverse transmission shaft to move through the motor reduction box to change the resistance value of the regulating resistor.

[0019] In one embodiment, the recorder is used to record the number of oscillations of the reactor power under step disturbance based on the voltage signal output by the reactor simulator, and obtain the debugging result of the reactor power regulation system according to the number of oscillations.

[0020] By means of the above technical solution, a reactor power simulation device provided in an embodiment of the present application can simulate the reactivity changes generated in the reactor by setting a deceleration device and an adjustment resistor, and can simulate the power changes of the reactor under reactivity disturbance by setting the reactor simulator to output voltage signals and current signals. By setting a recorder to collect the voltage signal output by the reactor simulator, the reactor power changes during the debugging of the reactor power regulation system can be recorded in a timely and accurate manner, thereby ensuring the accuracy of the debugging results of the reactor power regulation system. The above-mentioned reactor power simulation device can realize closed-loop control of the reactor power regulation system and meet the debugging requirements of the reactor power regulation system before it is put into operation. The above-mentioned reactor power simulation device can improve the debugging efficiency of the power regulation system and can maximize the protection of the operational safety of the reactor.

[0021] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 A schematic structural diagram of a reactor power regulation system provided in an embodiment of the present application is shown;

[0024] Figure 2 A schematic structural diagram of a reactor power simulation device provided in an embodiment of the present application is shown;

[0025] Figure 3 A schematic structural diagram of a reactor power simulation device provided in an embodiment of the present application when debugging a reactor power regulation system is shown. DETAILED DESCRIPTION

[0026] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0027] Before explaining the reactor power simulation device, the working principle of the reactor power regulation system is briefly explained first. Figure 1 A circuit diagram of a reactor power regulation system is shown in FIG. Figure 1 As shown, the reactor power regulation system generally receives an input signal from an ionization chamber proportional to the reactor's operating power, which is then fed into a power regulator. The power regulator amplifies the signal, compares it with a preset constant, and then outputs a constant-value deviation signal to the reactor power regulation system. The reactor power regulation system controls the rotation of a servo motor, which in turn drives the regulating rod up and down through a transmission mechanism to introduce the appropriate reactivity, thereby forming an automatic closed-loop control system that automatically stabilizes the reactor at a certain power level. Currently, traditional offline debugging methods for reactor power regulation systems suffer from low debugging efficiency, significant safety hazards, the inability to form a closed-loop debugging system, and poor debugging results.

[0028] In response to the above technical problems, this embodiment provides a reactor power simulation device, which can be used to debug the reactor power regulation system. Figure 2 and Figure 3As shown, the reactor power simulation device primarily includes a reactor simulator 10, a regulating resistor 20, a deceleration device 30, and a recorder 40. The deceleration device 30 is connected between the regulating rod transmission device of the reactor power regulation system and the regulating resistor 20. The output end of the regulating resistor 20 is connected to the input end of the reactor simulator 10. The current signal output end of the reactor simulator 10 is connected to the signal input end of the reactor power regulation system via the power regulator. The voltage signal output end of the reactor simulator 10 is connected to the recorder 40. In this embodiment, the resistance of the regulating resistor 20 can serve as an input signal for the reactor simulator 10. The reactor simulator 10 can be configured to output a current signal to the power regulator based on the input signal, so that the power regulator amplifies and compares the current signal and then outputs a fixed value deviation signal to the reactor power regulation system. The reactor power regulation system then outputs a drive signal to the regulating rod transmission device based on the fixed value deviation signal, causing the regulating rod transmission device to change the resistance value of the regulating resistor 20 via the deceleration device 30. In addition, the reactor simulator 10 is also used to output a voltage signal proportional to the reactor power to the recorder 40. The recorder 40 can be used to record the reactor power of the reactor power regulation system during the debugging process based on the voltage signal, thereby obtaining the debugging results of the reactor power regulation system.

[0029] Specifically, now combined Figure 3 The circuit structure diagram of the reactor power simulation device briefly explains the process and principle of debugging the reactor power regulation system. Figure 3 As shown, the reactor simulator 10 outputs a current signal to the power regulator. Within the power regulator, after current amplification and comparison, a fixed deviation adjustment voltage is output to the reactor power regulation system. The deviation adjustment voltage is amplified and processed by the reactor power regulation system, and then output as a motor control signal to control the rotation direction and speed of the drive motor. This signal is then passed through the motor reduction gearbox and output via a transverse transmission shaft. During normal operation, the transverse transmission shaft drives the adjustment rod up or down, thereby regulating reactor power. In this embodiment, the transverse transmission shaft is connected to the adjustment resistor 20 via a reduction gear 30. Rotation of the transverse transmission shaft changes the resistance of the adjustment resistor 20. The resistance of the adjustment resistor 20 serves as an input signal to the reactor simulator 10, influencing its output, thereby forming a closed-loop control loop for reactor power regulation. Furthermore, the reactor simulator 10 outputs a voltage signal proportional to the reactor power to a recorder 40. The recorder 40 records the reactor power changes during commissioning, thereby evaluating the dynamic quality of the regulation system.

[0030] In this embodiment, after the reactor power simulator and the reactor power regulation system are connected, if the power regulator outputs a zero fixed-value deviation signal, the reactor power regulation system does not regulate. In this case, the reactor simulator 10 can switch resistors via an internal switch, causing a step-like disturbance in reactivity. The power regulator then outputs a fixed-value deviation signal, and the reactor power regulation system outputs a drive signal. This drives the motor, motor reduction gearbox, transverse drive shaft, and reduction gear 30 to change the resistance of the regulating resistor 20 to compensate for the aforementioned change in reactivity.

[0031] The reactor power simulation device provided in the above embodiment can simulate the reactivity changes generated in the reactor by setting a deceleration device and an adjustment resistor. By setting the reactor simulator to output voltage signals and current signals, it can simulate the power changes of the reactor under reactivity disturbances. By setting a recorder to collect the voltage signal output by the reactor simulator, the reactor power changes during the debugging of the reactor power regulation system can be recorded in a timely and accurate manner, ensuring the accuracy of the debugging results of the reactor power regulation system. The above reactor power simulation device can realize closed-loop control of the reactor power regulation system and meet the debugging requirements of the reactor power regulation system before it is put into operation. The above reactor power simulation device can improve the debugging efficiency of the power regulation system and can maximize the protection of the operational safety of the reactor.

[0032] In one embodiment, the reactor simulator 10 may be composed of a simulation circuit, wherein the simulation circuit may be used to simulate the reactor dynamic equations including six sets of delayed neutrons, and output a voltage signal for simulating the reactor power, and output a current signal for simulating the ionization chamber current, wherein the reactor dynamic mode is:

[0033]

[0034] Where n is the number of neutrons in the core; C i is the concentration of precursor nuclei in the i-th group of delayed neutrons in the core; ρ is the reactivity of the reactor; β is the sum of the effective fractions of delayed neutrons; β i is the effective fraction of delayed neutrons in group i; l * is the effective lifetime of neutrons in the core and reflector; i is the delayed neutron decay constant of group i.

[0035] Specifically, the reactor simulator 10 can be constructed using analog circuits. In this embodiment, a set of analog circuits can be designed based on the reactor dynamic equations and the complex dynamic characteristics of six groups of delayed neutrons. The analog circuits can simulate physical processes such as neutron proliferation, absorption, and decay in the reactor. The analog circuits can be constructed using appropriate electronic components, such as operational amplifiers, resistors, capacitors, and diodes, based on actual needs. These components can then be used to simulate the physical processes within the reactor. After the circuit is constructed, the simulation effect can be optimized by adjusting circuit parameters, calibrating component values, and other means to more closely resemble the behavior of an actual reactor.

[0036] After the simulation circuit is constructed, the simulation circuit can be integrated into the reactor simulator 10 and connected to components such as the adjustment resistor 20, the deceleration device 30, the recorder 40, and then an overall test is performed to verify whether the reactor simulator 10 can correctly output voltage signals to simulate reactor power, and whether it can correctly output current signals to simulate ionization chamber current.

[0037] The above embodiment uses analog circuits to construct a reactor simulator, which can simulate the reactor dynamic equations containing six sets of delayed neutrons, thereby accurately reflecting the actual operation of the reactor. In addition, the analog circuit has a relatively fast response speed and can simulate the changes in reactor power and ionization chamber current in real time. Compared with simulation using high-performance computers or digital simulation software, the cost of using analog circuits to construct a reactor simulator is lower, which helps to reduce debugging costs. In addition, the analog circuit is also easier to integrate and connect with other physical devices (such as regulating resistors, deceleration devices, etc.), making the reactor simulator more convenient to apply in actual debugging scenarios.

[0038] In one embodiment, the reactor simulator 10 can change the constants of any group of delayed neutrons by changing the resistance values ​​of resistors and the capacitance values ​​of capacitors in the simulation circuit, thereby changing the effective fraction of delayed neutrons β i Slow neutron decay constant λ i .

[0039] Specifically, the reactor simulator can precisely control any set of delayed neutron constants by adjusting the resistance values ​​of resistors and the capacitance values ​​of capacitors in the simulation circuit, thereby changing the effective fraction and decay constant of delayed neutrons. The specific adjustment process is as follows: First, determine which set of delayed neutron constants needs to be adjusted and the desired target value. Then, based on the components of the simulation circuit related to the delayed neutron constants, including the resistors and capacitors that directly or indirectly affect these constants, the reactor simulator's internal adjustment devices can be used to adjust the resistance values ​​of selected resistors and the capacitance values ​​of selected capacitors to change the corresponding set of delayed neutron constants. After the adjustments are completed, simulation experiments or comparisons with actual reactor data can be conducted until the changes in the effective fraction and decay constant of delayed neutrons meet expectations.

[0040] This embodiment modifies the delayed neutron constant of any group by adjusting the resistance and capacitance of the simulation circuit, thereby achieving precise control of the delayed neutron effective fraction and decay constant. This allows for more accurate simulation of the behavior of delayed neutrons in a reactor and allows for flexible simulation settings tailored to different reactor types and operating conditions, enhancing the adaptability and flexibility of the reactor simulator. Furthermore, since this method eliminates the need to replace expensive hardware or develop complex software algorithms, and can achieve changes in the delayed neutron constant simply by adjusting existing circuit parameters, it can significantly reduce debugging costs.

[0041] In one embodiment, a switching switch is provided inside the reactor simulator 10 , wherein the switching switch can be used to switch the resistance value of the resistor in the simulation circuit to cause a step change in the output, thereby simulating a step change in reactivity.

[0042] Specifically, a switching switch can be set inside the reactor simulator to achieve rapid switching of the resistance value of the resistor in the simulation circuit, thereby simulating the step change of reactivity. The specific implementation process is as follows: First, one or more switching switches can be introduced inside the reactor simulator. Then, a plurality of resistors with different resistance values ​​are formed into a resistance network, and these resistors are connected to other parts of the simulation circuit through the switching switch. Among them, the resistance range of the resistance network can be set according to the needs of the reactor simulation to ensure that it can cover the possible range of reactivity changes. Furthermore, the switching switch can be configured with corresponding control logic so that the switching switch can automatically or manually switch to the specified resistance value when receiving a specific control signal. Finally, the configured reactor simulator can be applied to the actual reactor power regulation system to observe the dynamic response of the reactor by simulating the step change of reactivity.

[0043] This embodiment uses a switch to switch the resistance value of the resistor in the simulation circuit, enabling simulation of reactivity step changes. This helps improve the accuracy and reliability of the reactor simulator in simulating reactor dynamic behavior. Compared to traditional methods that simulate reactivity changes by adjusting multiple parameters, the switch in this embodiment is simpler and faster to operate. A simple switch operation can switch the resistance value and simulate reactivity step changes, reducing operational complexity and difficulty.

[0044] In one embodiment, the adjustment resistor 20 may be a multi-turn rotary potentiometer, wherein the multi-turn rotary potentiometer can simulate continuous changes in responsiveness by rotation.

[0045] A multi-turn potentiometer is an electronic component with multiple rotations. By rotating the shaft of the multi-turn potentiometer, the contacts can be moved across different resistors, thereby changing the resistance value. Specifically, the output of the multi-turn potentiometer can be connected to the input of a reactor simulator, and the resistance value of the adjusted resistor can be used as the input signal of the reactor simulator. During the operation of the reactor simulator, the multi-turn potentiometer can be rotated to simulate continuous changes in reactivity. Simultaneously, the voltage signal output by the reactor simulator can be observed in real time using a recorder to provide real-time information on changes in reactor power.

[0046] This embodiment uses a multi-turn potentiometer as a regulating resistor to accurately simulate minute changes in reactivity, thereby improving the accuracy and reliability of the reactor simulator in simulating reactor dynamic behavior. Furthermore, the multi-turn potentiometer is low-cost, simple in structure, and easy to maintain, significantly reducing the manufacturing and maintenance costs of the reactor power simulator. Furthermore, simulating continuous changes in reactivity by rotating the multi-turn potentiometer reduces the difficulty and complexity of debugging operations and improves operational efficiency.

[0047] In one embodiment, the regulating rod transmission device of the reactor power regulating system can drive the multi-turn rotary potentiometer 20 to rotate through the reduction device 30 to simulate the movement of the regulating rod in the reactor.

[0048] Specifically, the reduction gear may include components such as a motor and a gear set, and is used to convert the rapid rotation of the motor into a slower but higher-torque rotational output. In this embodiment, by adjusting the gear ratio of the reduction gear, it is possible to ensure that the output speed of the reduction gear matches the actual movement speed of the regulating rod in the reactor. In this embodiment, when the reactor power regulation system sends a motor control signal, the regulating rod transmission device can drive the transmission mechanism (such as a transmission shaft) to operate. At this time, the reduction gear can convert the rapid rotation of the transmission mechanism into a slower but higher-torque rotational output, thereby driving the multi-turn rotary potentiometer to rotate. The rotation of the multi-turn rotary potentiometer will change its internal resistance value, thereby simulating the reactivity change caused by the movement of the regulating rod in the reactor.

[0049] This embodiment uses the reactor power regulation system's own regulating rod actuator to simulate the movement of regulating rods within the reactor. This more realistically reflects the interaction between the regulating rods and reactor reactivity, thereby improving the simulation accuracy and reliability of the reactor simulator. Furthermore, the regulating rod actuator is easy to control, facilitating comprehensive simulation of the reactor's dynamic behavior under different operating conditions.

[0050] In one embodiment, the adjustment resistor 20 can be connected to the input end of the reactor simulator 10 through a wire, wherein the resistance of the adjustment resistor 20 can be used to simulate reactivity changes to change the current signal and voltage signal output by the reactor simulator.

[0051] Specifically, the pins of the adjustable resistor 20 (representing different resistance values) can be connected to the input terminal of the reactor simulator 10 via wires. Furthermore, corresponding circuits and software can be configured within the reactor simulator 10 to receive resistance change signals from the adjustable resistor 20 and adjust the output current and voltage signals in real time based on these signals. The current and voltage signals output by the reactor simulator can be used to simulate the electrical characteristics of the reactor under different reactivity states.

[0052] This embodiment uses a deceleration device and adjustable resistors to simulate the movement of the regulating rods and the continuous change in reactivity, thereby improving the accuracy and reliability of the reactor simulator. This simulation method is close to the actual operation process of the reactor, which helps to accurately predict and evaluate the reactor performance.

[0053] In one embodiment, the deceleration device 30 includes a connection component with a deceleration function, and the connection component can be used to connect the adjustment resistor 20 and the transmission mechanism (such as a transmission shaft) in the adjustment rod transmission device.

[0054] Specifically, the adjustment resistor 20 (i.e., the multi-turn rotary potentiometer) and the adjustment rod transmission device can be coupled via a reduction gear 30 to ensure that the output shaft of the reduction gear can stably drive the rotation axis of the adjustment resistor 20. In this embodiment, a connecting component, such as a coupling, a bracket, etc., can be provided in the reduction gear 30 to ensure that the connection between the adjustment rod transmission device and the adjustment resistor 20 is both stable and flexible.

[0055] In this embodiment, by providing a deceleration device within the reactor power simulator, the rotational speed of the regulating resistor can be effectively reduced, thereby protecting the regulating resistor from damage. Furthermore, the deceleration and connection functions of the deceleration device also make the rotation of the regulating resistor smoother and more controllable, thereby reducing system vibration and noise caused by speed fluctuations, thereby improving the stability and reliability of the entire system.

[0056] In one embodiment, the regulating rod transmission device includes a drive motor, a motor reduction gearbox, and a transverse transmission shaft, wherein the input end of the drive motor is connected to the output end of the reactor power regulation system, the output end of the drive motor is connected to the motor reduction gearbox, the motor reduction gearbox is connected to the transverse transmission shaft, and the transverse transmission shaft is connected to the regulating resistor 20 through a reduction gear 30. The drive motor can be used to drive the transverse transmission shaft to move through the motor reduction gearbox to change the resistance value of the regulating resistor 20.

[0057] Specifically, the regulating rod transmission device of the reactor power regulation system is an integrated system comprising multiple components, including a drive motor, a motor reduction gearbox, and a transverse transmission shaft. These components work together to precisely adjust the resistance of the regulating resistor 20. In this embodiment, the reactor power regulation system can send a motor control signal to the drive motor to drive its operation. The motor reduction gearbox can reduce the speed of the drive motor and increase the torque to better drive the transverse transmission shaft. The transverse transmission shaft can transmit the power from the motor reduction gearbox to the regulating resistor 20 via a reduction gear 30, driving its rotation and changing its resistance.

[0058] This embodiment utilizes the deceleration effect of the motor reduction box and reduction gear to reduce the speed of the drive motor and increase torque, thereby improving the precision and stability of the transmission process. This makes the rotation of the adjustable resistor smoother and more controllable, and enhances the precision of resistance adjustment. Furthermore, the use of the motor reduction box and reduction gear enhances the system's impact resistance and durability, thereby improving its overall reliability.

[0059] In one embodiment, the recorder 40 can be used to record the number of oscillations of the reactor power under step disturbance based on the voltage signal output by the reactor simulator 10, and obtain the debugging result of the reactor power regulation system according to the number of oscillations.

[0060] Specifically, the recorder 40 is a display device integrated with data acquisition and analysis functions, which can be used to receive and process the voltage signal output from the reactor simulator 10 and perform automatic analysis. In this embodiment, a high-precision data acquisition module can be provided inside the recorder 40, so that the voltage signal output by the reactor simulator 10 can be captured in real time and accurately. These voltage signals can reflect the power changes of the reactor under different operating conditions. Moreover, the data analysis module provided inside the recorder 40 can identify step disturbances in the voltage signal and calculate the number of oscillations of the reactor power under the step disturbance. Furthermore, the recorder 40 can store the number of oscillations obtained by analysis and the related voltage signal data in an internal memory, and make them available for users to view and export through a display screen or an interface device (such as USB, Ethernet, etc.).

[0061] This embodiment uses a recorder to collect and analyze the voltage signals output by the reactor simulator in real time, enabling automated evaluation of the reactor power regulation system's performance, thereby improving the efficiency and accuracy of system debugging. Furthermore, the recorder can record and store large amounts of voltage signal data and oscillation frequency information, providing users with detailed debugging data. This helps users gain a more comprehensive understanding of the performance characteristics of the reactor power regulation system and promptly identify problems and deficiencies in the system, thereby improving system stability and reliability and ensuring the safe operation of the reactor.

[0062] Furthermore, as a refinement and expansion of the specific implementation of the above embodiment, in order to fully illustrate the specific implementation process of this embodiment, a reactor power simulation device is provided, which can be used to debug the reactor power regulation system. Figure 2 and Figure 3As shown, the above-mentioned device mainly includes a reactor simulator 10, a regulating resistor 20, a deceleration device 30, and a recorder 40. The deceleration device 30 is connected between the regulating rod transmission device of the reactor power regulation system and the regulating resistor 20. The output end of the regulating resistor 20 is connected to the input end of the reactor simulator 10. The current signal output end of the reactor simulator 10 is connected to the signal input end of the reactor power regulation system through the power regulator. The voltage signal output end of the reactor simulator 10 is connected to the recorder 40. In this embodiment, the resistance of the regulating resistor 20 can serve as an input signal for the reactor simulator 10. The reactor simulator 10 can be configured to output a current signal to the power regulator based on the input signal, so that the power regulator amplifies and compares the current signal and then outputs a fixed value deviation signal to the reactor power regulation system. The reactor power regulation system outputs a drive signal to the regulating rod transmission device based on the fixed value deviation signal, so that the regulating rod transmission device changes the resistance value of the regulating resistor 20 through the deceleration device 30. In addition, the reactor simulator 10 is also used to output a voltage signal proportional to the reactor power to the recorder 40. The recorder 40 can be used to record the reactor power of the reactor power regulation system during the debugging process based on the voltage signal, thereby obtaining the debugging results of the reactor power regulation system.

[0063] In the above embodiment, the reactor simulator 10 may be composed of an analog circuit, wherein the analog circuit may be used to simulate the reactor dynamic equations including six groups of delayed neutrons, and output a voltage signal for simulating the reactor power, and output a current signal for simulating the ionization chamber current, wherein the reactor dynamic mode is:

[0064]

[0065] Where n is the number of neutrons in the core; C i is the concentration of precursor nuclei in the i-th group of delayed neutrons in the core; ρ is the reactivity of the reactor; β is the sum of the effective fractions of delayed neutrons; β i is the effective fraction of delayed neutrons in group i; l * is the effective lifetime of neutrons in the core and reflector; i is the delayed neutron decay constant of group i.

[0066] In the above embodiment, the reactor simulator 10 can change the constant of any group of delayed neutrons by changing the resistance value of the resistor and the capacitance value of the capacitor in the simulation circuit, thereby changing the effective fraction of delayed neutrons β i Slow neutron decay constant λ i .

[0067] In the above embodiment, a switch is provided inside the reactor simulator 10 , wherein the switch can be used to switch the resistance value of the resistor in the simulation circuit to cause a step change in the output, thereby simulating a step change in reactivity.

[0068] In the above embodiment, the adjustment resistor 20 may be a multi-turn rotary potentiometer, wherein the multi-turn rotary potentiometer can simulate continuous changes in responsiveness through rotation.

[0069] In the above embodiment, the regulating rod transmission device of the reactor power regulating system can drive the multi-turn rotary potentiometer 20 to rotate through the reduction device 30 to simulate the movement of the regulating rod in the reactor.

[0070] In the above embodiment, the adjustment resistor 20 can be connected to the input end of the reactor simulator 10 through a wire, wherein the resistance of the adjustment resistor 20 can be used to simulate reactivity changes to change the current signal and voltage signal output by the reactor simulator.

[0071] In the above embodiment, the deceleration device 30 includes a connection component with a deceleration function, and the connection component can be used to connect the adjustment resistor 20 and the transmission mechanism (such as a transmission shaft) in the adjustment rod transmission device.

[0072] In the above embodiment, the regulating rod transmission device includes a drive motor, a motor reduction gearbox, and a transverse transmission shaft. The input end of the drive motor is connected to the output end of the reactor power regulation system, the output end of the drive motor is connected to the motor reduction gearbox, the motor reduction gearbox is connected to the transverse transmission shaft, and the transverse transmission shaft is connected to the regulating resistor 20 via a reduction gear 30. The drive motor can be used to drive the transverse transmission shaft to move via the motor reduction gearbox to change the resistance value of the regulating resistor 20.

[0073] In the above embodiment, the recorder 40 can be used to record the number of oscillations of the reactor power under step disturbance based on the voltage signal output by the reactor simulator 10, and obtain the debugging result of the reactor power regulation system according to the number of oscillations.

[0074] The reactor power simulation device provided by the above embodiment has at least the following technical effects:

[0075] 1. Improve debugging efficiency: This embodiment can realize closed-loop debugging of the reactor power regulation system by simulating the actual operating conditions of the reactor, greatly shortening the debugging cycle and improving debugging efficiency.

[0076] 2. Reduce safety risks: Traditional offline debugging methods have safety risks, while the reactor power simulation device provided in this embodiment can be debugged in a safe simulation environment, thereby avoiding potential risks in actual reactor operation.

[0077] 3. Improved debugging effect: The above-mentioned reactor power simulation device can realize closed-loop debugging of the reactor control system. Therefore, it can more accurately simulate the actual operation of the reactor power control system, thereby more comprehensively evaluating the performance and stability of the reactor control system and improving the debugging effect.

[0078] 4. Facilitate troubleshooting and improvement: In this embodiment, the data recorded by the recorder can clearly show the changes in reactor power during the debugging process, which helps to quickly locate the problem and provides strong support for subsequent troubleshooting and system improvement.

[0079] 5. Enhanced system adaptability: The reactor power simulation device provided in this embodiment can adjust simulation parameters as needed to adapt to reactor power regulation systems of different models and specifications, thereby enhancing the adaptability and flexibility of the system.

[0080] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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 specification.

[0081] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A reactor power simulation device, characterized in that: The reactor power simulation device is used to debug the reactor power regulation system. The reactor power simulation device includes a reactor simulator, a regulating resistor, a deceleration device and a recorder, wherein: The deceleration device is connected between the regulating rod transmission device of the reactor power regulation system and the regulating resistor, the output end of the regulating resistor is connected to the input end of the reactor simulator, the current signal output end of the reactor simulator is connected to the signal input end of the reactor power regulation system through a power regulator, and the voltage signal output end of the reactor simulator is connected to the recorder; In which, the resistance of the regulating resistor is used as the input signal of the reactor simulator. The reactor simulator outputs a current signal to the power regulator based on the input signal, so that the power regulator amplifies and compares the current signal and then outputs a fixed value deviation signal to the reactor power regulation system. The reactor power regulation system outputs a driving signal to the regulating rod transmission device based on the fixed value deviation signal, so that the regulating rod transmission device changes the resistance of the regulating resistor through the deceleration device; the reactor simulator is also used to output a voltage signal proportional to the reactor power to the recorder, and the recorder is used to record the reactor power of the reactor power regulation system during the debugging process according to the voltage signal to obtain the debugging result of the reactor power regulation system.

2. The reactor power simulation device according to claim 1, characterized in that: The reactor simulator is composed of an analog circuit, which is used to simulate the reactor dynamic equations containing six groups of delayed neutrons, and output the voltage signal for simulating the reactor power, and output the current signal for simulating the ionization chamber current, wherein the reactor dynamic mode is: Where n is the number of neutrons in the core; C i is the concentration of precursor nuclei in the i-th group of delayed neutrons in the core; ρ is the reactivity of the reactor; β is the sum of the effective fractions of delayed neutrons; β i is the effective fraction of delayed neutrons in group i; l * is the effective lifetime of neutrons in the core and reflector; i is the delayed neutron decay constant of group i.

3. The reactor power simulation device according to claim 2, characterized in that: The reactor simulator changes the constants of any group of delayed neutrons by changing the resistance value of the resistor and the capacitance value of the capacitor in the simulation circuit to change the effective fraction of delayed neutrons β i and the delayed neutron decay constant λ i .

4. The reactor power simulation device according to claim 2 or 3, characterized in that: A switching switch is provided inside the reactor simulator, and the switching switch is used to switch the resistance value of the resistor in the simulation circuit, causing a step change in the output to simulate a step change in reactivity.

5. The reactor power simulation device according to claim 1, characterized in that: The regulating resistor is a multi-turn rotary potentiometer, which simulates continuous changes in responsiveness through rotation.

6. The reactor power simulation device according to claim 5, characterized in that: The regulating rod transmission device of the reactor power regulating system drives the multi-turn rotary potentiometer to rotate through a reduction device to simulate the movement of the regulating rod in the reactor.

7. The reactor power simulation device according to claim 5 or 6, characterized in that: The regulating resistor is connected to the input terminal of the reactor simulator through a wire. The resistance of the regulating resistor is used to simulate reactivity changes to change the current signal and voltage signal output by the reactor simulator.

8. The reactor power simulation device according to claim 1, characterized in that: The deceleration device includes a connecting component with a deceleration function, and the connecting component is used to connect the regulating resistor and the transmission mechanism in the regulating rod transmission device.

9. The reactor power simulation device according to claim 8, characterized in that: The regulating rod transmission device includes a driving motor, a motor reduction box and a transverse transmission shaft, wherein: The input end of the drive motor is connected to the output end of the reactor power regulation system, the output end of the drive motor is connected to the motor reduction box, the motor reduction box is connected to the transverse transmission shaft, and the transverse transmission shaft is connected to the regulating resistor through the reduction device; The driving motor is used to drive the transverse transmission shaft to move through the motor reduction box to change the resistance value of the regulating resistor.

10. The reactor power simulation device according to claim 1, characterized in that: The recorder is used to record the oscillation times of the reactor power under step disturbance based on the voltage signal output by the reactor simulator, and obtain the debugging result of the reactor power regulation system according to the oscillation times.

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