Reactor power simulation device

Abstract

The invention discloses a reactor power simulation device, relates to the technical field of nuclear power, and is used for debugging a reactor power regulation system. The device comprises a reactor simulator, an adjusting resistor, a speed reducer and a recorder, the resistance value of the adjusting resistor serves as an input signal of the reactor simulator, and the reactor simulator outputs a current signal to a power regulator based on the input signal; the power regulator outputs a constant value deviation signal to the reactor power regulating system after amplifying and comparing the current signal, and the reactor power regulating system outputs a driving signal to the regulating rod transmission device based on the constant value deviation signal, so that the regulating rod transmission device changes the resistance value of the regulating resistor through the speed reducing device; the reactor simulator is further used for outputting a voltage signal in direct proportion to the reactor power to the recorder, and the recorder is used for recording the reactor power of the reactor power regulation system in the debugging process according to the voltage signal to obtain a debugging result 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 field of nuclear energy, the reactor power regulation system plays a core role in ensuring the stable and safe operation of the reactor. Its main responsibility is to monitor and adjust the power of the reactor to keep the power of the reactor at the specified value. When a reactivity disturbance occurs in the reactor, the power automatic regulation system can control the regulating rod to move accordingly through the regulating rod transmission device to offset the change in reactivity, thereby maintaining the power of the reactor unchanged.

[0003] Before the reactor power regulation system is put into operation, the dynamic performance of the reactor power regulation system needs to be tested to verify whether the reactor power regulation system can work normally during the operation of the reactor. At present, the offline test method is mainly used to debug the reactor power regulation system to verify whether its dynamic performance can meet the self-stabilization requirements of the reactor power, that is, when the reactor is not running, the preset signal or disturbance is input to the power regulation system, and how the system responds is observed, so as to generate the debugging results of the system.

[0004] However, although the offline test method can achieve the debugging goal of the reactor power regulation system to a certain extent, the offline test requires a long time to prepare and execute, is relatively complex and time-consuming in operation, and has low debugging efficiency. Moreover, during the offline test, although the reactor is not in operation, there are still certain safety hazards, and it is necessary to prevent accidental damage or potential risks at any time. 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 a 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 regulating 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 regulating system through the power regulator, and the voltage signal output end of the reactor simulator is connected to the recorder;

[0008] Among them, the resistance value of the regulating resistor is used as the input signal of the reactor simulator, and 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, and 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 value 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 a simulation circuit, the simulation circuit 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:

[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 the i-th group.

[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 delayed neutron effective fraction 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, and the multi-turn rotary potentiometer simulates continuous changes in responsiveness by 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 through a wire, and the resistance of the regulating resistor is used to simulate the reactivity change to change the current signal and voltage signal output by the reactor simulator.

[0017] In one embodiment, the deceleration device comprises 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 driving motor, a motor reduction box and a transverse transmission shaft, wherein the input end of the driving motor is connected to the output end of the reactor power regulation system, the output end of the driving 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 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.

[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 scheme, a reactor power simulation device provided in an embodiment of the present application can simulate the reactivity changes produced in the reactor by setting a deceleration device and an adjustment resistor, and can simulate the power changes of the reactor under the reactivity disturbance by setting the reactor simulator output voltage signal and current signal, and can timely and accurately record the reactor power changes during the debugging of the reactor power regulation system by setting a recorder to collect the voltage signal output by the reactor simulator, thereby 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 safety of the operation 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 the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[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 structure diagram of a reactor power regulation system is shown in FIG. Figure 1 As shown, the reactor power regulation system generally provides an input signal from an ionization chamber that is proportional to the reactor operating power, and inputs it into a power regulator. The power regulator is used to amplify the signal, compare the amplified signal with a preset fixed value, and then output a fixed value deviation signal to the reactor power regulation system. The reactor power regulation system is used to control the rotation of the servo motor, and then drive the adjustment rod to rise and fall through the transmission mechanism to introduce the corresponding reactivity, thereby forming an automatic adjustment closed-loop control, so that the reactor automatically stabilizes at a certain power level. At present, the traditional offline debugging method of the reactor power regulation system mainly has the problems of low debugging efficiency, great safety hazards, inability to form closed-loop debugging, and poor debugging effect.

[0028] In view of 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 mainly includes a reactor simulator 10, an adjusting resistor 20, a deceleration device 30 and a recorder 40. The deceleration device 30 is connected between the adjusting rod transmission device and the adjusting resistor 20 of the reactor power regulation system, the output end of the adjusting 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, and the voltage signal output end of the reactor simulator 10 is connected to the recorder 40. In this embodiment, the resistance of the adjusting resistor 20 can be used as an input signal of the reactor simulator 10, and the reactor simulator 10 can be 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, and the reactor power regulation system outputs a driving signal to the adjusting rod transmission device based on the fixed value deviation signal, so that the adjusting rod transmission device changes the resistance of the adjusting 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 according to the voltage signal, thereby obtaining the debugging results of the reactor power regulation system.

[0029] Specifically, now combined Figure 3 The circuit structure diagram briefly explains the process and principle of debugging the reactor power regulation system of the reactor power simulation device. Figure 3 As shown, the reactor simulator 10 outputs a current signal to the power regulator. After the current is amplified and compared in the power regulator, a fixed value deviation adjustment voltage is output to the reactor power regulation system. After the deviation adjustment voltage is amplified and processed by the reactor power regulation system, a motor control signal is output to control the motor rotation direction and rotation speed of the drive motor. After passing through the motor reduction box, it is output through the transverse transmission shaft. During normal operation, the transverse transmission shaft can drive the adjustment rod to rise or fall, thereby adjusting the reactor power. In this embodiment, the transverse transmission shaft is connected to the adjustment resistor 20 after the reduction device 30. The rotation of the transverse transmission shaft can change the resistance value of the adjustment resistor 20. The resistance value of the adjustment resistor 20 is used as an input signal of the reactor simulator 10, which can affect the output of the reactor simulator 10, thereby forming a closed-loop control of the reactor power regulation. In addition, the reactor simulator 10 also outputs a voltage signal proportional to the reactor power to the recorder 40. The recorder 40 can record the power change state of the reactor during the debugging period, thereby evaluating the dynamic quality of the regulation system.

[0030] In this embodiment, after the reactor power simulation device and the reactor power regulation system are connected, if the power regulator outputs a fixed value deviation signal of zero, the reactor power regulation system does not adjust. At this time, the reactor simulator 10 can switch the resistance through the internal switch to make the reactivity undergo a step disturbance. The power regulator will output a fixed value deviation signal at this time, and the reactor power regulation system will output a driving signal and change the resistance value of the regulating resistor 20 through the driving motor, the motor reduction box, the transverse transmission shaft and the reduction device 30 to compensate for the above-mentioned change in reactivity.

[0031] The reactor power simulation device provided in the above embodiment can simulate the reactivity changes produced in the reactor by setting a deceleration device and an adjustment resistor. By setting the reactor simulator to output voltage signals and current signals, the power changes of the reactor under reactivity disturbances can be simulated. 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 to ensure 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 safety of the operation 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 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:

[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 the i-th group.

[0035] Specifically, the reactor simulator 10 can be constructed using an analog circuit. In this embodiment, a set of analog circuits can be designed based on the reactor dynamic equations for the complex dynamic characteristics of six groups of delayed neutrons. Among them, the analog circuit can simulate the physical processes such as neutron proliferation, absorption, and decay in the reactor. For the composition of the analog circuit, appropriate electronic components such as operational amplifiers, resistors, capacitors, diodes, etc. can be selected according to actual needs to construct the various components of the analog circuit, and these components can be used to simulate the physical processes inside the reactor. After the circuit is constructed, the simulation effect of the circuit can be optimized by adjusting circuit parameters, calibrating component values, etc., so that it is closer to the behavior of the actual reactor.

[0036] After the simulation circuit is constructed, it can be integrated into the reactor simulator 10 and connected to the adjustment resistor 20, the deceleration device 30, the recorder 40 and other components, 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 can simulate the reactor dynamic equations containing six groups of delayed neutrons by using analog circuits to construct a reactor simulator, thereby accurately reflecting the actual operation of the reactor. In addition, the analog circuit has a faster response speed and can simulate the changes in reactor power and ionization chamber current in real time. Compared with the use of high-performance computers or digital simulation software for simulation, the cost of using analog circuits to construct a reactor simulator is lower, which helps to reduce the debugging cost. In addition, the analog circuit is also easier to integrate and connect with other physical devices (such as adjusting resistors, deceleration devices, etc.), so that the reactor simulator can be more conveniently applied to actual debugging scenarios.

[0038] In one 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 delayed neutron effective fraction β i Slow neutron decay constant λ i .

[0039] Specifically, the reactor simulator can achieve precise control of any group of delayed neutron constants by adjusting the resistance value of the resistor and the capacitance value of the capacitor in the simulation circuit, thereby changing the effective fraction and decay constant of delayed neutrons. The specific adjustment process is as follows: First, it is clear which group of delayed neutron constants needs to be adjusted, and the target value to be achieved, and then according to the part of the simulation circuit related to the delayed neutron constant, including the resistors and capacitors that directly or indirectly affect these constants. Furthermore, the adjustment device inside the reactor simulator can be used to adjust the resistance value of the selected resistor and the capacitance value of the capacitor to change the constant of the corresponding group of delayed neutrons. After the adjustment is completed, it can be compared with the actual reactor data through simulation experiments or until the changes in the effective fraction and decay constant of delayed neutrons are in line with expectations.

[0040] This embodiment changes the constant of any group of delayed neutrons by adjusting the resistance value of the resistor and the capacitance value of the capacitor in the simulation circuit, thereby achieving precise control of the effective fraction of delayed neutrons and the decay constant, which can more accurately simulate the behavior of delayed neutrons in the reactor, and can flexibly perform simulation settings according to different reactor types and operating conditions, thereby enhancing the adaptability and flexibility of the reactor simulator. In addition, since the above method does not require the replacement of expensive hardware equipment or the development of complex software algorithms, the change of the delayed neutron constant can be achieved by adjusting the existing circuit parameters, which can significantly reduce the debugging cost.

[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 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 resistor network, and these resistors are connected to other parts of the simulation circuit through the switching switch. Among them, the resistance range of the resistor network can be set according to the needs of the reactor simulation to ensure that the range of possible reactivity changes can be covered. Further, the corresponding control logic can be configured for the switching switch so that the switching switch can automatically or manually switch to a 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 introduces a switch to switch the resistance value of the resistor in the simulation circuit, which can simulate the reactivity step change, and helps to improve the accuracy and reliability of the reactor simulator in simulating the dynamic behavior of the reactor. Compared with the traditional method of simulating reactivity changes by adjusting multiple parameters, the switch operation in this embodiment is simpler and faster. Only a simple switch operation is required to switch the resistance value and simulate the reactivity step change, which reduces the complexity and difficulty of the operation.

[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] Among them, the multi-turn rotary potentiometer is an electronic component with multiple rotations. By rotating the rotating shaft of the multi-turn rotary potentiometer, the contact can be moved on different resistors, thereby changing the resistance value. Specifically, the output end of the multi-turn rotary potentiometer can be connected to the input end of the reactor simulator, and the resistance value of the adjustment resistor can be used as the input signal of the reactor simulator. During the operation of the reactor simulator, the continuous change of reactivity can be simulated by rotating the multi-turn rotary potentiometer. At the same time, the voltage signal output by the reactor simulator can be observed in real time through a recorder to understand the power change of the reactor in real time.

[0046] This embodiment uses a multi-turn rotary potentiometer as an adjustment resistor to achieve accurate simulation of small changes in reactivity, thereby improving the accuracy and reliability of the reactor simulator in simulating the dynamic behavior of the reactor. In addition, the multi-turn rotary potentiometer has low cost, simple structure, and easy maintenance, which can significantly reduce the manufacturing cost and maintenance cost of the reactor power simulation device. In addition, by rotating the multi-turn rotary potentiometer to simulate the continuous change of reactivity, the difficulty and complexity of the debugging operation can be reduced, and the operating efficiency can be improved.

[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 device 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 more torquey rotation output. In this embodiment, by adjusting the gear ratio of the reduction device, it is possible to ensure that the output speed of the reduction device matches the actual moving 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 device can convert the rapid rotation of the transmission mechanism into a slower but more torquey rotation 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 simulates the movement of the regulating rod in the reactor through the regulating rod transmission device of the reactor power regulation system itself, which can more realistically reflect the interaction between the regulating rod and the reactor reactivity, thereby improving the simulation accuracy and reliability of the reactor simulator. In addition, the regulating rod transmission device is easy to control, which can help to fully simulate the dynamic behavior characteristics of the reactor under different working conditions.

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

[0051] Specifically, the pins (representing different resistance values) of the adjusting resistor 20 can be connected to the input end of the reactor simulator 10 through wires. In addition, corresponding circuits and software can be configured inside the reactor simulator 10, so as to receive the resistance change signal from the adjusting resistor 20, and adjust the output current signal and voltage signal in real time according to the signal, wherein the current signal and voltage signal 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 an adjustable resistor to simulate the movement of the adjusting rod and the continuous change of the reactivity, which can improve the accuracy and reliability of the reactor simulator simulation. This simulation method is close to the operation process of the actual reactor and helps to accurately predict and evaluate the performance of the reactor.

[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 by the reduction gear 30 to ensure that the output shaft of the reduction gear can stably drive the rotation shaft 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 in the reactor power simulation device, the rotation speed of the regulating resistor can be effectively reduced, thereby protecting the regulating resistor from damage. In addition, through the deceleration and connection effects of the deceleration device, the rotation of the regulating resistor can also be made more stable and 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 driving motor, a motor reduction box and a transverse transmission shaft, wherein the input end of the driving motor is connected to the output end of the reactor power regulation system, the output end of the driving 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 20 through a reduction device 30. The driving motor can be used to drive the transverse transmission shaft to move through the motor reduction box 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, which includes multiple components such as a drive motor, a motor reduction box and a transverse transmission shaft. These components work together to achieve accurate regulation of the resistance value 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 it to operate. The motor reduction box can reduce the speed of the drive motor and increase the torque to better drive the transverse transmission shaft. The transverse transmission shaft can transfer the power of the motor reduction box to the regulating resistor 20 through the reduction gear 30 to drive it to rotate and change the resistance value.

[0058] This embodiment can reduce the speed of the driving motor and increase the torque through the deceleration effect of the motor reduction box and the reduction device, thereby improving the accuracy and stability in the transmission process, making the rotation of the adjustment resistor more stable and controllable, and improving the accuracy of resistance adjustment. In addition, the use of the motor reduction box and the reduction device also enhances the impact resistance and durability of the system, thereby improving the overall reliability of the system.

[0059] In one embodiment, the recorder 40 can be used to record the number of oscillations of the reactor power under a 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 with integrated 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 step disturbances. Furthermore, the recorder 40 can store the analyzed number of oscillations and related voltage signal data in an internal memory, and provide users with viewing and export through a display screen or an interface device (such as USB, Ethernet, etc.).

[0061] This embodiment can realize the automatic evaluation of the performance of the reactor power regulation system by real-time acquisition and analysis of the voltage signal output by the reactor simulator through the recorder, thereby improving the efficiency and accuracy of system debugging. In addition, the recorder can record and store a large amount of voltage signal data and oscillation frequency information, so as to provide users with detailed debugging data, which helps users to more comprehensively understand the performance characteristics of the reactor power regulation system, and also helps users to promptly discover problems and deficiencies in the reactor power regulation system, thereby improving the stability and reliability of the system 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, an adjusting resistor 20, a deceleration device 30 and a recorder 40. Among them, the deceleration device 30 is connected between the adjusting rod transmission device and the adjusting resistor 20 of the reactor power regulation system, the output end of the adjusting 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, and the voltage signal output end of the reactor simulator 10 is connected to the recorder 40. In this embodiment, the resistance value of the adjusting resistor 20 can be used as an input signal of the reactor simulator 10, and the reactor simulator 10 can be 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, and the reactor power regulation system outputs a driving 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 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 according to 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 a simulation circuit, wherein the simulation circuit may be used to simulate the reactor dynamic equations containing 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 the i-th group.

[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 delayed neutron effective fraction β i Slow neutron decay constant λ i .

[0067] In the above 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.

[0068] In the above embodiment, the adjusting resistor 20 may be a multi-turn rotary potentiometer, wherein the multi-turn rotary potentiometer can simulate continuous changes in responsiveness by 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 adjusting resistor 20 can be connected to the input end of the reactor simulator 10 through a wire, wherein the resistance of the adjusting resistor 20 can be used to simulate the reactivity change 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 driving motor, a motor reduction box and a transverse transmission shaft, wherein the input end of the driving motor is connected to the output end of the reactor power regulation system, the output end of the driving 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 20 through the reduction device 30. The driving motor can be used to drive the transverse transmission shaft to move through the motor reduction box 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 in 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, which greatly shortens the debugging cycle and improves the debugging efficiency.

[0076] 2. Reduce safety hazards: Traditional offline debugging methods have safety hazards, 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. Improve debugging effect: The above-mentioned reactor power simulation device can realize closed-loop debugging of the reactor control system, and thus 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 view 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 may 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 only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached 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 regulating 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 regulating system through the power regulator, and the voltage signal output end of the reactor simulator is connected to the recorder; Among them, the resistance value 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 value 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 a simulation 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 the i-th group.

3. The reactor power simulation device according to claim 2, characterized in that: The reactor simulator changes 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 to change the delayed neutron effective fraction 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: The reactor simulator is internally provided with a switching switch, 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, and the multi-turn rotary potentiometer 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, and the resistance value of the regulating resistor is used to simulate the reactivity change 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 comprises a connection component with a deceleration function, and the connection 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 driving motor is connected to the output end of the reactor power regulation system, the output end of the driving 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 driving motor is used to drive the transverse transmission shaft to move through the motor reduction box to change the resistance value of the adjustment 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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