Device for controlling a refueling installation of a nuclear reactor and nuclear reactor
By connecting sensors, signal converters, and controllers, rapid shutdown control of the refueling equipment in fast breeder reactors is achieved, solving the problem of accurate control that is difficult to achieve in existing technologies and improving the safety and reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA INSTITUTE OF ATOMIC ENERGY
- Filing Date
- 2024-12-25
- Publication Date
- 2026-06-05
AI Technical Summary
Existing fuel operation and control systems have difficulty accurately controlling refueling equipment in fast breeder reactors, especially in the event of a malfunction, making it difficult to shut down the equipment in a timely manner, which affects the safety and reliability of the refueling equipment.
By connecting the sensor to the signal converter, and then connecting the signal converter to the driver and controller respectively, the operating signal acquired by the sensor is directly sent to the driver and controller. When the driver receives the operating signal from the signal converter, it directly drives the material changing equipment to stop running. When the controller does not receive the operating signal from the signal converter, it controls the driver to stop running. Control commands are generated by combining the predetermined operating requirements and parameter thresholds to ensure the safety and reliability of the material changing equipment.
This enables rapid shutdown response of the refueling equipment in case of failure, improves the operational safety and reliability of the refueling equipment, and ensures the safety of the reactor.
Smart Images
Figure CN119786100B_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this application relate to the field of nuclear energy technology, specifically to an apparatus for controlling a refueling device for a reactor and a reactor. Background Technology
[0002] The statements herein are provided merely as background information in connection with this application and do not necessarily constitute prior art.
[0003] Fast breeder reactors (hereinafter referred to as fast reactors) are capable of releasing enormous amounts of thermal energy through nuclear fission chain reactions rich in fissile nuclides. The thermal energy is then transferred to high-temperature, high-pressure steam via a circulating coolant, thereby driving a steam turbine generator to produce electricity.
[0004] Fast reactors can convert the difficult-to-utilize U-238 fuel in thermal neutron reactors into the more readily usable Pu-239 fuel, thereby significantly improving nuclear fuel utilization. This is primarily achieved through refueling equipment that transfers nuclear fuel assemblies. Because the refueling process in fast reactors is complex and requires high positioning accuracy for the refueling equipment, precise control of its operation is essential. However, current fuel operation and control systems are not ideal. Summary of the Invention
[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.
[0006] In a first aspect, embodiments of this application provide an apparatus for controlling a refueling device in a reactor, comprising a signal converter, a controller, a driver, and a sensor; the sensor is communicatively connected to the signal converter for acquiring operating signals of the refueling device and sending the operating signals to the signal converter; the signal converter is communicatively connected to the driver for sending operating signals to the driver so that the driver drives the refueling device to stop operating; furthermore, the signal converter is also connected to the controller for sending operating signals to the controller; the controller is used to generate control commands based on the received operating signals, and the controller is also communicatively connected to the driver for sending the generated control commands to the driver so that the driver drives the refueling device to stop operating, thus preventing the driver from failing to receive the operating signals sent by the signal converter; the driver is used to drive the refueling device to operate.
[0007] The embodiments of this application connect the sensor to a signal converter, and the signal converter to a driver and a controller respectively. This enables the sensor to send the operating signals of the material changing equipment to the driver and controller respectively. When the driver receives the operating signal directly sent by the signal converter, it can directly drive the material changing equipment to stop operating with a short response time. At the same time, by connecting the controller to the driver, when the driver does not receive the operating signal directly sent by the signal converter, the controller can control the driver to drive the material changing equipment to stop operating, thus ensuring the safety and reliability of the material changing equipment operation.
[0008] Secondly, embodiments of this application also provide a reactor, which includes: fuel assemblies, refueling equipment, and the apparatus of embodiments of this application, wherein the refueling equipment is used to transfer fuel assemblies; and the apparatus is used to control the operation of the refueling equipment.
[0009] These and other advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description
[0010] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.
[0011] Figure 1 This is a schematic block diagram of an apparatus for controlling a refueling device for a reactor according to an embodiment of this application;
[0012] Figure 2 This is a schematic diagram of the control principle of a device for controlling a reactor refueling equipment according to an embodiment of this application.
[0013] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.
[0014] Explanation of reference numerals in the attached figures:
[0015] 10. Sensor; 11. Continuous position sensor; 12. Fixed position sensor; 13. Safety clutch sensor; 14. Position over-limit sensor; 20. Signal converter; 30. Controller; 40. Driver; 50. Motor; 60. Safety clutch; 70. Gearbox; 80. Load device. Detailed Implementation
[0016] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.
[0017] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.
[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning as understood by a person with ordinary skills in the field to which this application pertains.
[0019] In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0020] Refueling equipment is a series of electromechanical devices responsible for transferring nuclear fuel assemblies. During refueling in a fast reactor, the operation is complex, and the fuel assembly transfer takes place in a environment of metallic coolant and radioactive gas, making the fuel assemblies invisible. Therefore, the operational safety and control requirements for the refueling equipment are quite high. Current technologies for controlling the refueling equipment often struggle to promptly and effectively shut it down in case of malfunction, thus compromising the safety and reliability of its operation.
[0021] To address the aforementioned technical problems, embodiments of this application provide an apparatus for controlling a reactor refueling device. Figure 1 This is a schematic block diagram of an apparatus (hereinafter referred to as a control apparatus) for controlling a reactor refueling device according to an embodiment of this application, as shown below. Figure 1 As shown, the control device includes a signal converter 20, a controller 30, a driver 40, and a sensor 10.
[0022] Sensor 10 is communicatively connected to signal converter 20 to acquire the operating signal of the material changing equipment and send the operating signal to signal converter 20.
[0023] The signal converter 20 is communicatively connected to the driver 40, and is used to send the running signal to the driver 40 so that the driver 40 drives the material changing device to stop running; and the signal converter 20 is also connected to the controller 30, and is used to send the running signal to the controller 30.
[0024] The controller 30 is used to generate control commands based on the received operating signals, and the controller 30 is also communicatively connected to the driver 40 to send the generated control commands to the driver 40 so that the driver 40 drives the material changing equipment to stop running, thus preventing the driver 40 from not receiving the operating signals sent by the signal converter 20.
[0025] The driver 40 is used to drive the material changing equipment.
[0026] The embodiments of this application connect the sensor 10 to the signal converter 20, and connect the signal converter 20 to the driver 40 and the controller 30 respectively. This enables the sensor 10 to send the operating signal of the material changing equipment to the driver 40 and the controller 30 respectively. When the driver 40 receives the operating signal directly sent by the signal converter 20, it can directly drive the material changing equipment to stop operating with a short response time. At the same time, by connecting the controller 30 to the driver 40, when the driver 40 does not receive the operating signal directly sent by the signal converter 20, the controller 30 can control the driver 40 to drive the material changing equipment to stop operating, thus ensuring the safety and reliability of the material changing equipment operation.
[0027] In some embodiments, the signal converter 20 is a relay.
[0028] In some embodiments, the control device further includes: a communication device; the signal converter 20 is connected to the driver 40 via the communication device to send the running signal directly to the driver 40, thereby further reducing the response time of the driver 40, which helps to achieve rapid shutdown when the material changing equipment malfunctions, and at the same time avoids protection failure caused by factors such as signal network communication failure or software logic operation failure of the controller 30.
[0029] In such an embodiment, the response time of driver 40 is less than 10ms.
[0030] In some embodiments, the operating signal detected by the sensor 10 is isolated and converted into two operating signals by the signal converter 20 for output.
[0031] In this embodiment, one of the two operating signals is sent to the driver 40 to directly control the driver 40 to stop the material changing device; the other of the two operating signals is sent to the controller 30, so that the controller 30 can generate a control command based on the operating signal, and then use the control command to control the driver 40, thereby causing the driver 40 to stop the material changing device.
[0032] In some embodiments, the controller 30 is configured to: receive an operating signal; compare the operating signal with the predetermined operating requirements of the material changing equipment; and generate a control command when the operating signal indicates that the current operating state of the material changing equipment does not meet the predetermined operating requirements.
[0033] The embodiments of this application compare the received operating signal with the predetermined operating requirements and generate control commands based on the comparison results, which can control the operation of the material changing equipment relatively quickly and accurately.
[0034] In some embodiments, the predetermined operating requirement is a threshold value for the operating parameters of the material changing equipment. The controller 30 is further configured to: compare the operating parameters corresponding to the operating signal with the operating parameter threshold value to determine the difference in operating parameters; when the difference in operating parameters is greater than the predetermined difference threshold value, determine that the current operating state of the material changing equipment does not meet the predetermined operating requirement, and generate a control command to control the material changing equipment to stop operating.
[0035] The embodiments of this application compare the operating parameters corresponding to the fault signal with the operating parameter threshold to determine the operating parameter difference. Based on the relationship between the operating parameter difference and the predetermined difference threshold, it is possible to determine whether the current operating parameters of the material changing equipment meet the predetermined operating requirements, thereby generating corresponding control commands and improving the reliability of the material changing equipment.
[0036] In some embodiments, the predetermined operating requirement is the operating parameter range of the material changing equipment. The controller 30 is further configured to: determine whether the operating parameter corresponding to the operating signal is within the operating parameter range; when the operating parameter corresponding to the operating signal is not within the operating parameter range, determine that the current operating state of the material changing equipment does not meet the predetermined operating requirement, and generate a control command to control the material changing equipment to stop operating.
[0037] The embodiments of this application compare the operating parameters corresponding to the fault signal with the operating parameter range to determine whether the operating parameters are within the operating parameter range. This allows for the determination of whether the operating parameters of the material changing equipment meet the predetermined operating requirements based on the relationship between the operating parameters and the operating parameter range, thereby generating corresponding control commands and improving the reliability of the material changing equipment.
[0038] In some embodiments, Figure 2This is a schematic diagram of the control principle of a device for controlling a reactor refueling equipment according to an embodiment of this application, as shown below. Figure 2 As shown, sensor 10 includes a fixed position sensor 12 for detecting the position signal of the material changing device, so as to control the material changing device to stop running in a timely manner when the stroke of the material changing device ends.
[0039] In some embodiments, the fixed position sensor 12 is disposed at the end position of the working stroke of the material changing device to detect the arrival of the material changing device.
[0040] In some embodiments, the controller 30 is configured to: compare the position information corresponding to the arrival signal with a predetermined stop position to determine the position difference; and when the position difference is greater than a predetermined difference threshold, generate a control command to control the material changing equipment to stop operating.
[0041] The embodiments of this application compare the position information corresponding to the arrival signal with the predetermined stop position to determine the position difference, so as to determine whether the current stop position of the material changing equipment meets the predetermined operating requirements.
[0042] In some embodiments, sensor 10 may also be a continuous position sensor 11, used to detect the continuous position signal of the material changing device, so as to monitor the stroke of the material changing device in real time and ensure that the material changing device can perform the material changing operation smoothly.
[0043] In some embodiments, the controller 30 is configured to: determine whether the position information corresponding to the continuous position signal is within a predetermined continuous position range; and generate a control command when the continuous position is not within the predetermined continuous position range to control the material changing equipment to stop operating.
[0044] The embodiments of this application compare the position information corresponding to the continuous position signal with a predetermined continuous position range to determine whether the current position information of the material changing equipment is within the predetermined continuous position range, so as to monitor in real time whether the operating status of the material changing equipment meets the predetermined operating requirements and ensure the reliability of the material changing equipment.
[0045] In some embodiments, such as Figure 2As shown, the material changing device includes a load device 80, a motor 50, a safety clutch 60, and a gearbox 70. The driver 40 drives the motor 50 of the material changing device, which in turn drives the load device 80 via the safety clutch 60 and gearbox 70. The safety clutch 60 disconnects the mechanical transmission chain when the load device 80 experiences excessive mechanical interference torque. The safety clutch sensor 13 detects the operation of the safety clutch 60 and generates an alarm signal to stop the motor 50. The gearbox 70 decelerates the motor 50. A position over-limit sensor 14 located on the gearbox 70 detects when the mechanical position exceeds a limit and generates an over-limit alarm signal. This alarm signal directly enters the driver 40 to stop the motor, and simultaneously enters the controller 30 to stop the driver 40 as well.
[0046] In some embodiments, the control device may include a plurality of continuous position sensors 11, such as two, which are respectively connected to the motor 50 and the gearbox 70 of the material changing device to detect whether the motor 50 and the gearbox 70 have malfunctioned.
[0047] In such an embodiment, by comparing the continuous position signals detected by the two continuous position sensors 11, if the difference between the two continuous position signals is greater than a predetermined difference threshold, it can be determined that the continuous position sensor 11 or the material changing device has malfunctioned. At this time, the controller 30 can generate a control command to control the motor 50 of the material changing device to stop running.
[0048] In some embodiments, sensor 10 includes a safety clutch 60 sensor 10 and a position overload sensor 14. The safety clutch 60 sensor 10 is disposed on the safety clutch 60 and is used to detect whether the safety clutch 60 is overloaded. The position overload sensor 14 is disposed on the gearbox 70 and is used to detect the operating position of the load device 80.
[0049] In such an embodiment, when mechanical motion interference occurs in the material changing equipment and excessive torque is generated on the transmission chain, the mechanical safety clutch 60 will be overloaded, thereby triggering the safety clutch sensor 13 installed on the safety clutch 60 to generate a corresponding operating signal to control the motor 50 of the material changing equipment to stop running.
[0050] In such an embodiment, when the current position of the load device 80 exceeds the travel end limit, the position over-limit sensor 14 is triggered to generate a corresponding operating signal to control the motor 50 of the material changing device to stop running.
[0051] An embodiment of this application also provides a reactor, which includes: fuel assemblies, refueling equipment, and a control device according to an embodiment of this application, wherein the refueling equipment is used to transfer fuel assemblies; and the control device is used to control the operation of the refueling equipment.
[0052] The embodiments of this application control the operation of the refueling equipment through a control device. In the event of a malfunction in the refueling equipment, this facilitates timely detection of the fault and allows the refueling equipment to be stopped in operation, thereby ensuring the safety and reliability of the refueling equipment and thus the safety of the reactor.
[0053] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.
[0054] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.
Claims
1. A device for controlling refueling equipment in a reactor, characterized in that, It includes signal converters, controllers, drivers, and sensors; The sensor is communicatively connected to the signal converter to acquire the operating signal of the material changing device and send the operating signal to the signal converter. The signal converter and the driver are respectively communicatively connected, and the signal converter is used to send the running signal to the driver so that the driver drives the material changing device to stop running; Furthermore, the signal converter is also connected to the controller and is used to send the operating signal to the controller; The controller is used to generate control commands based on the received operating signal, and the controller is also communicatively connected to the driver to send the generated control commands to the driver so that the driver drives the material changing device to stop operating, thus preventing the driver from not receiving the operating signal sent by the signal converter; The driver is used to drive the material changing device to operate, and the driver drives the motor of the material changing device to move; When the driver receives the running signal directly sent by the signal converter, it directly drives the material changing device to stop running.
2. The apparatus according to claim 1, characterized in that, Also includes: correspondence, The signal converter is connected to the driver via the communication device to send the operating signal directly to the driver.
3. The apparatus according to claim 1, characterized in that, The controller is configured as follows: Receive the operation signal; Compare the operating signal with the predetermined operating requirements of the material changing equipment; The control command is generated when the operating signal indicates that the current operating status of the material changing equipment does not meet the predetermined operating requirements.
4. The apparatus according to claim 3, characterized in that, The predetermined operating requirements are the operating parameter thresholds of the material changing equipment, wherein the controller is further configured to: The operating parameters corresponding to the operating signal are compared with the operating parameter threshold to determine the operating parameter difference; When the difference in the operating parameters is greater than a predetermined difference threshold, it is determined that the current operating state of the material changing equipment does not meet the predetermined operating requirements, and the control command is generated to control the material changing equipment to stop operating.
5. The apparatus according to claim 3, characterized in that, The predetermined operating requirements are the operating parameter range of the material changing equipment, wherein the controller is further configured to: Determine whether the operating parameters corresponding to the operating signal are within the range of the operating parameters; When the operating parameters corresponding to the operating signal are not within the range of the operating parameters, it is determined that the current operating state of the material changing equipment does not meet the predetermined operating requirements, and the control command is generated to control the material changing equipment to stop operating.
6. The apparatus according to any one of claims 1-5, characterized in that, The sensor is a fixed position sensor used to detect the arrival signal of the material changing device.
7. The apparatus according to claim 6, characterized in that, The controller is configured as follows: The position information corresponding to the arrival signal is compared with the predetermined stop position to determine the position difference; When the position difference is greater than a predetermined difference threshold, the control command is generated to control the material changing equipment to stop operating.
8. The apparatus according to any one of claims 1-5, characterized in that, The sensor is a continuous position sensor, used to detect the continuous position signal of the material changing device.
9. The apparatus according to claim 8, characterized in that, The controller is configured as follows: Determine whether the position information corresponding to the continuous position signal is within a predetermined continuous position range; When the continuous position is not within the predetermined continuous position range, the control command is generated to control the material changing equipment to stop operating.
10. A reactor, characterized in that its include: Fuel assembly, refueling equipment, and the apparatus according to any one of claims 1-9, wherein, The refueling equipment is used to transfer the fuel assembly; The device is used to control the operation of the material changing equipment.