Fault detection method, fault detection device, and reactor

Abstract

The embodiment of the invention relates to the technical field of nuclear energy, in particular to a fault detection method, a fault detection device and a reactor, the fault detection method is suitable for detecting faults of refueling equipment of the reactor, and the fault detection method comprises the steps that a fault signal detected by a sensor is acquired, and the fault signal is matched with operating parameters of a component; determining a fault detection result of each component in the refueling equipment according to the obtained fault signal; and outputting a fault detection result and controlling the refueling equipment to stop running. According to the method disclosed by the embodiment of the invention, the fault detection result of each component in the refueling equipment is determined and output through the fault signal, the refueling equipment is controlled to stop running, and the fault is found in time and the refueling equipment is controlled to stop working under the condition that the refueling equipment has the fault, so that the running safety and reliability of the refueling equipment are ensured, and meanwhile, the safety of the refueling equipment is ensured. And a fault detection result is output, so that an operator can know the position of a fault in the refueling equipment conveniently, and the refueling equipment can be maintained and overhauled conveniently.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of nuclear energy technology, and specifically to a fault detection method, a fault detection device, and a reactor. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] A fast breeder reactor (hereinafter referred to as fast reactor) is a reactor that can utilize nuclear fission chain reactions rich in fissionable nuclides to release huge amounts of heat energy, and then transfer the heat energy to high-temperature and high-pressure steam through the circulation of coolant, thereby driving a steam turbine generator to generate electricity.

[0004] Fast reactors can convert U-238, which is difficult to use in thermal neutron reactors, into Pu-239, which is easy to use, to greatly improve the utilization rate of nuclear fuel. The main method is to transfer nuclear fuel assemblies through refueling equipment. In fast reactors, the fuel operation control system of fast reactors is the upper monitoring system for monitoring refueling equipment. It is very important to be able to understand the operating status of refueling equipment in a timely manner. However, the current fuel operation control system is not ideal. Summary of the invention

[0005] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0006] In the first aspect, an embodiment of the present application provides a fault detection method, which is suitable for detecting faults in a reactor's fuel replacement equipment, and comprises the following steps: S1. Acquire a fault signal detected by a sensor; S2. Determine a fault detection result of each component in the fuel replacement equipment based on the fault signal obtained in step S1; S3. Output the fault detection result and control the fuel replacement equipment to stop running; wherein, the reactor includes a plurality of sensors, and the plurality of sensors are respectively used to detect the fault signals of each component in the fuel replacement equipment, and the fault signals match the operating parameters of the corresponding components.

[0007] The method provided in the embodiment of the present application determines the fault detection results of each component in the material changing equipment through the fault signal detected by the sensor and outputs the fault detection results, and at the same time controls the material changing equipment to stop running according to the fault detection results. In this way, when a fault occurs in the material changing equipment, the fault can be discovered in time and the material changing equipment can be controlled to stop working, so as to ensure the safety and reliability of the operation of the material changing equipment. At the same time, by outputting the fault detection results, it is helpful for the operator to understand the location of the fault in the material changing equipment, so as to facilitate its maintenance and repair.

[0008] On the second aspect, an embodiment of the present application also provides a fault detection device, which is suitable for detecting faults in a reactor's fuel replacement equipment, and comprises: an acquisition module, used to acquire a fault signal detected by a sensor; a determination module, used to determine the fault detection results of each component in the fuel replacement equipment based on the fault signal obtained by the acquisition module; a control module, used to output the fault detection result and control the fuel replacement equipment to stop operating; wherein, the reactor includes a plurality of sensors, and the plurality of sensors are respectively used to detect the fault signals of each component in the fuel replacement equipment, and the fault signals are matched with the operating parameters of the corresponding components.

[0009] In the third aspect, an embodiment of the present application also provides a reactor, which includes: a fuel assembly, a fuel replacement equipment and a fault detection device, wherein the fuel replacement equipment is used to transport the fuel assembly; the fault detection device is used to perform fault detection on each component in the fuel replacement equipment according to the fault detection method of an embodiment of the present application.

[0010] These and other advantages of the present application will become more apparent through the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to further illustrate the above and other advantages and features of the present application, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. The accompanying drawings together with the following detailed description are included in this specification and form a part of this specification. Elements with the same function and structure are represented by the same reference numerals. It should be understood that these drawings only describe typical examples of the present application and should not be regarded as limiting the scope of the present application.

[0012] Figure 1 is a schematic flow chart of a fault detection method according to an embodiment of the present application;

[0013] Figure 2 is a schematic block diagram of a fault detection device according to an embodiment of the present application.

[0014] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.

[0015] Description of reference numerals:

[0016] 10. Acquisition module; 20. Determination module; 30. Control module. DETAILED DESCRIPTION

[0017] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0018] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0019] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in this application should have the common meanings understood by persons with ordinary skills in the field to which this application belongs.

[0020] In the description of the embodiments of the present application, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0021] The refueling equipment is a series of electromechanical equipment responsible for transporting nuclear fuel assemblies. In the relevant technology, there are a large number of refueling equipment in fast reactors, and the operations performed by the refueling equipment during the refueling process are complex. The current fuel operation control system cannot effectively and timely detect failures in the refueling equipment, nor can it output and display the failure results, resulting in the operator being unable to effectively maintain and repair the refueling equipment in a timely manner.

[0022] In some embodiments, a fuel operation control system failure can be understood as: the components in the fuel operation control system and their controlled fuel replacement equipment lose their specified functions under specified conditions and within a specified time, or their performance indicators deteriorate to beyond the specified range.

[0023] In view of the above technical problems, an embodiment of the present application provides a fault detection method, which is suitable for detecting faults of a fuel replacement device of a reactor. Figure 1 is a schematic flow chart of a fault detection method according to an embodiment of the present application, such as Figure 1As shown, the fault detection method includes the following steps S1 to S3.

[0024] S1. Acquire a fault signal detected by a sensor, wherein the reactor includes a plurality of sensors, and the plurality of sensors are respectively used to detect the fault signal of each component in the refueling equipment, and the fault signal matches the operating parameter of the corresponding component.

[0025] S2. According to the fault signal obtained in step S1, the fault detection results of each component in the material exchange equipment are determined.

[0026] S3. Output the fault detection result and control the material changing equipment to stop running.

[0027] The method provided in the embodiment of the present application determines the fault detection results of each component in the material changing equipment through the fault signal detected by the sensor and outputs the fault detection results, and at the same time controls the material changing equipment to stop running according to the fault detection results. In this way, when a fault occurs in the material changing equipment, the fault can be discovered in time and the material changing equipment can be controlled to stop working, so as to ensure the safety and reliability of the operation of the material changing equipment. At the same time, by outputting the fault detection results, it is helpful for the operator to understand the location of the fault in the material changing equipment, so as to facilitate its maintenance and repair.

[0028] In some embodiments, the system for executing the fault detection method provided by the embodiments of the present application may be a fuel operation control system.

[0029] In some embodiments, when it is determined according to the acquired fault signal that a certain component of the fuel exchanging device fails, the fuel operation control system may control the component to stop working.

[0030] In some embodiments, the fuel operation control system is a distributed control system, and its network structure is divided into two layers: process level and operation level. According to the structure of the fuel operation control system and the distribution characteristics of its controlled equipment, the fault level can be divided into: system level system fault and component level single machine fault.

[0031] In some embodiments, the refueling device includes multiple sensors, such as a position detection sensor, a temperature sensor, a fixed position sensor, a continuous position sensor, a force sensor, etc., wherein the function of each sensor is described in the following embodiments. The fuel operation control system can determine whether a corresponding component in the refueling device has a fault by acquiring the fault signal detected by each sensor.

[0032] In some embodiments, step S2 includes: S21, determining the fault type of the component; S22, determining the fault judgment requirements of the component according to the fault type of the component obtained in step S21; S22, determining the fault detection results of the components in the material replacement equipment according to the fault signal and the fault judgment requirements.

[0033] The method provided in the embodiment of the present application determines the fault judgment requirements corresponding to each component according to the fault type of each component. Therefore, based on the fault signal and the fault judgment requirements, the fault detection results of the components in the material replacement equipment can be determined more accurately to improve the reliability of the fault detection results.

[0034] In some embodiments, the fault type includes a first fault type and a second fault type, and the fault judgment requirement includes a first fault judgment requirement and a second fault judgment requirement, wherein step S21 includes: when the fault type of the component is the first fault type, determining the fault judgment requirement of the component to be the first fault judgment requirement; when the fault type of the component is the second fault type, determining the fault judgment requirement of the component to be the second fault judgment requirement.

[0035] The method provided in the embodiment of the present application divides the fault types into a first fault type and a second fault type, and each fault type has its own corresponding fault judgment requirement, which helps to improve the efficiency and accuracy of fault detection.

[0036] In some embodiments, the first fault type is used to indicate whether the corresponding component can perform its corresponding function. For example, after the fast reactor enters the refueling state, the "refueling permission" signal is the only external interlock signal for the fuel operation control system to perform the refueling operation. After determining that the process parameters related to the refueling operation are all within the normal range, the "refueling permission" signal is issued; during the refueling process, if the process parameters related to the refueling operation exceed their corresponding thresholds, the interlock signal is revoked to automatically cause the fuel operation control system and the refueling equipment to enter a suspended fault state.

[0037] In some embodiments, the second fault type is used to indicate whether the corresponding component meets the requirements during operation. For example, during the operation of the refueling device, the current position of the refueling device is determined by the "positioning" signal and compared with the predetermined travel path to determine in real time whether the travel of the refueling device meets the requirements.

[0038] In some embodiments, in step S21, component faults are classified according to the control requirements corresponding to different components in the material exchange equipment, so that different fault judgment methods can be used for different types of components, thereby ensuring the accuracy of the fault detection results.

[0039] In some embodiments, step S22 includes: S221, directly determining whether a component fails according to the fault signal and the first fault judgment requirement.

[0040] The method provided in the embodiment of the present application can determine whether a component has a fault relatively quickly and accurately based on the fault signal and the first fault judgment requirement.

[0041] In some embodiments, when a drive failure occurs, the drive motor stops abnormally due to motor overload or driver abnormality. This type of failure is usually automatically detected by a relay or driver on the electrical main circuit and then outputs a fault signal, thereby directly determining that a relay or driver component on the electrical main circuit has failed.

[0042] In some embodiments, when the fault corresponding to the current fault signal is a safety clutch failure, the safety clutch slips due to motion interference in the material changing mechanical equipment or increased resistance in the internal transmission components, thereby cutting off the mechanical transmission chain. Finally, the sensor used to detect the position where the safety clutch slips detects the corresponding fault signal and outputs it, thereby directly determining that the safety clutch of the material changing equipment has a fault.

[0043] In some embodiments, when the fault corresponding to the current fault signal is a stroke overlimit fault, when the position of the mechanical device exceeds the specified stroke range limit during the movement of the material changing equipment, the fixed position overlimit sensor can be triggered, so that the fixed position overlimit sensor detects the stroke overlimit fault signal and then outputs it, thereby directly determining that a fault has occurred in the mechanical device of the material changing equipment.

[0044] In some embodiments, when the fault corresponding to the current fault signal is a single-machine communication fault, the communication between the single-machine programmable logic controller (PLC) and the upstream controller is interrupted, which can automatically trigger and output the corresponding fault signal, thereby directly determining that the single-machine PLC of the material changing equipment has a fault.

[0045] In some embodiments, when the fault corresponding to the current fault signal is a component plug-in force overload fault, during the process of grasping and releasing components of the material changing equipment, the value measured by the force sensor exceeds a predetermined limit, which can automatically trigger the corresponding fault signal and output it, thereby directly determining that a fault has occurred in the grasping and releasing components of the material changing equipment.

[0046] In some embodiments, step S22 further includes: S222, judging whether the operating parameters of the component meet the predetermined operating requirements according to the fault signal and the second fault judgment requirement; S223, determining that the component has a fault when the operating parameters of the component do not meet the predetermined operating requirements.

[0047] The method provided in the embodiment of the present application can determine whether a component has a fault relatively quickly and accurately based on the fault signal and the second fault judgment requirement.

[0048] In some embodiments, the predetermined operating requirement is an operating parameter threshold of a component, wherein step S222 includes: comparing the operating parameter of the component corresponding to the fault signal with the operating parameter threshold to determine the operating parameter difference; when the operating parameter difference is greater than the predetermined difference threshold, determining that the operating parameter of the component does not meet the predetermined operating requirement.

[0049] The method provided in the embodiment of the present application compares the operating parameters of the component corresponding to the fault signal with the operating parameter threshold value, and determines the operating parameter difference, so as to determine whether the operating parameters of the component meet the predetermined operating requirements based on the relationship between the operating parameter difference and the predetermined difference threshold value, thereby improving the reliability of the material replacement equipment.

[0050] In some embodiments, when the fault corresponding to the current fault signal is a temperature over-limit fault, the fuel operation control system determines whether the fuel changing equipment has a fault by comparing the temperature detected by the temperature sensor signal of the fuel changing equipment with a predetermined temperature threshold. If the difference between the current temperature and the predetermined temperature threshold is greater than the temperature difference threshold, it is determined that the fuel changing equipment has a fault.

[0051] In some embodiments, when the fault corresponding to the current fault signal is a positioning out-of-tolerance fault, after the fuel operation control system drives the fuel replacement equipment to complete a positioning movement, the actual in-place information of the mechanical device is compared with the predetermined in-place information to determine whether the fuel replacement equipment has a fault. If the in-place difference is greater than the in-place difference threshold, it is determined that the fuel replacement equipment has a fault.

[0052] In some embodiments, during the operation of the fuel exchange equipment, the fuel operation control system detects measurement signals of multiple continuous position sensors of the same mechanical device, or detects whether the measurement signal of one continuous position sensor matches the measurement signal of a fixed position sensor.

[0053] In such an embodiment, when the fault corresponding to the current fault signal is a position feedback signal inconsistency fault, by comparing the difference between multiple continuous position sensors with a predetermined continuous position difference, or comparing the continuous position signal detected by the continuous position sensor value with the fixed position signal triggered by the fixed position sensor, if the difference between the multiple continuous position sensors is greater than the predetermined continuous position difference, or the continuous position signal detected by the continuous position sensor value does not match the fixed position signal triggered by the fixed position sensor, it is determined that a fault has occurred in the material replacement equipment.

[0054] In some embodiments, the predetermined operating requirement is an operating parameter range of the component, wherein step S222 includes: comparing the operating parameter of the component corresponding to the fault signal with the operating parameter range; when the operating parameter of the component is not within the operating parameter range, determining that the operating parameter of the component does not meet the predetermined operating requirement.

[0055] The method provided in the embodiment of the present application compares the operating parameters of the components corresponding to the fault signal with the operating parameter range to determine whether the operating parameters are within the operating parameter range, so as to determine whether the operating parameters of the components meet the predetermined operating requirements based on the relationship between the operating parameters and the operating parameter range, thereby improving the reliability of the material replacement equipment.

[0056] In some embodiments, when the fault corresponding to the current fault signal is an overtime fault, whether the material changing device is faulty is determined by judging whether the running time of the material changing device is within a predetermined running time range. If the running time of the current material changing device is not within the predetermined running time range, it is determined that the material changing device is faulty.

[0057] In such an embodiment, the causes of the timeout fault include: disconnection of the mechanical transmission chain, failure of the position detection sensor, etc.

[0058] In some embodiments, after a fault signal is generated, it can be determined whether the movement of the fuel replacement equipment needs to be stopped based on the fault detection results, and the generated fault signal can be displayed in real time, and the component where the fault occurs can be automatically located according to the fault signal, so that the operator can confirm and repair the fault based on the fault signal and the location where the fault occurs; after the fault is repaired, the fuel operation control system resumes real-time detection of equipment faults.

[0059] The embodiments of the present application also provide a fault detection device, which is suitable for detecting faults in a refueling device of a reactor. Figure 2 is a schematic block diagram of a fault detection device according to an embodiment of the present application, such as Figure 2 As shown, the fault detection device includes an acquisition module 10 , a determination module 20 and a control module 30 .

[0060] The acquisition module 10 is used to acquire the fault signal detected by the sensor, wherein the reactor includes a plurality of sensors, and the plurality of sensors are respectively used to detect the fault signal of each component in the refueling equipment, and the fault signal matches the operating parameter of the corresponding component.

[0061] The determination module 20 is used to determine the fault detection results of various components in the material exchange equipment according to the fault signal obtained by the acquisition module 10.

[0062] The control module 30 is used to output the fault detection result and control the material changing equipment to stop running.

[0063] The embodiment of the present application utilizes the determination module 20 to determine the fault detection results of each component in the material changing equipment according to the fault signal obtained by the acquisition module 10, and outputs the fault detection results through the control module 30. At the same time, the control module 30 is used to control the material changing equipment to stop running according to the fault detection results. In this way, when a fault occurs in the material changing equipment, the fault is discovered in time and the material changing equipment is controlled to stop working, so as to ensure the safety and reliability of the operation of the material changing equipment. At the same time, by outputting the fault detection results, it is helpful for the operator to understand the location of the fault in the material changing equipment, so as to facilitate its maintenance and repair.

[0064] An embodiment of the present application also provides a reactor, which includes: a fuel assembly, a fuel replacement device and a fault detection device, wherein the fuel replacement equipment is used to transport the fuel assembly; the fault detection device is used to perform fault detection on each component in the fuel replacement equipment according to the fault detection method of the embodiment of the present application.

[0065] The embodiments of the present application perform fault detection on the material changing equipment through a fault detection device, and output the fault detection result. This is helpful for timely discovery of the fault and control of the material changing equipment to stop working when a fault occurs in the material changing equipment, so as to ensure the safety and reliability of the operation of the material changing equipment. At the same time, by outputting the fault detection result, it is helpful for the operator to understand the location of the fault in the material changing equipment, so as to facilitate its maintenance and repair.

[0066] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0067] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A fault detection method, which is suitable for detecting a fault in a refueling device of a reactor, characterized in that: It includes the following steps: S1, obtaining the fault signal detected by the sensor; S2. Determine the fault detection results of each component in the material exchange equipment according to the fault signal obtained in step S1; S3, outputting the fault detection result and controlling the material changing equipment to stop running; Wherein, the reactor includes a plurality of the sensors, and the plurality of sensors are respectively used to detect fault signals of various components in the material replacement equipment, and the fault signals match the operating parameters of the corresponding components.

2. The method according to claim 1, characterized in that In step S2, it includes: S21, determining the fault type of the component; S22, determining a fault judgment requirement of the component according to the fault type of the component obtained in step S21; S22. Determine a fault detection result of the component in the material changing equipment according to the fault signal and the fault judgment requirement.

3. The method according to claim 2, characterized in that The fault type includes a first fault type and a second fault type, and the fault judgment requirement includes a first fault judgment requirement and a second fault judgment requirement, wherein step S21 includes: When the fault type of the component is the first fault type, determining the fault judgment requirement of the component to be the first fault judgment requirement; When the fault type of the component is the second fault type, the fault judgment requirement of the component is determined to be the second fault judgment requirement.

4. The method according to claim 3, characterized in that Step S22 includes: S221. Directly determine whether the component has a fault according to the fault signal and the first fault judgment requirement.

5. The method according to claim 3, characterized in that: Step S22 also includes: S222, judging whether the operating parameters of the component meet the predetermined operating requirements according to the fault signal and the second fault judgment requirement; S223: When the operating parameters of the component do not meet the predetermined operating requirements, determine that the component has a fault.

6. The method according to claim 5, characterized in that The predetermined operating requirement is an operating parameter threshold of the component, wherein step S222 includes: Comparing the operating parameter of the component corresponding to the fault signal with the operating parameter threshold to determine the operating parameter difference; When the operating parameter difference is greater than a predetermined difference threshold, it is determined that the operating parameter of the component does not meet the predetermined operating requirement.

7. The method according to claim 5, characterized in that The predetermined operating requirement is an operating parameter range of the component, wherein step S222 includes: comparing the operating parameter of the component corresponding to the fault signal with the operating parameter range; When the operating parameter of the component is not within the operating parameter range, it is determined that the operating parameter of the component does not meet the predetermined operating requirement.

8. The method according to claim 2, characterized in that: In step S21, According to the control requirements corresponding to different components in the material exchange equipment, the failures of the components are classified.

9. A fault detection device, which is suitable for detecting faults in a refueling device of a reactor, characterized in that: It includes: An acquisition module, used for acquiring a fault signal detected by a sensor; A determination module, used to determine the fault detection results of each component in the material exchange equipment according to the fault signal obtained by the acquisition module; A control module, used for outputting the fault detection result and controlling the material changing equipment to stop running; Wherein, the reactor includes a plurality of the sensors, and the plurality of sensors are respectively used to detect fault signals of various components in the material replacement equipment, and the fault signals match the operating parameters of the corresponding components.

10. A reactor, characterized in that include: Fuel assembly, refueling equipment and fault detection device, wherein: The refueling equipment is used to transport the fuel assembly; A fault detection device is used to perform fault detection on each component in the material changing equipment according to the fault detection method according to any one of claims 1 to 8.

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