Rod control power supply cabinet and method for simulating issuing of control instruction of rod control system
By integrating the analog control system and programmable logic controller module in the rod-controlled power cabinet, independent performance testing of the rod-controlled chassis is achieved, and the problems of low testing efficiency and poor reliability in the existing technology are solved, testing efficiency and reliability are improved, and supporting the safe operation of nuclear power plants.
Patent Information
- Application Number
- CN202411692526.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-03-14
AI Technical Summary
When testing the performance of rod control chassis, the existing rod control system has low test efficiency and poor reliability, and needs to rely on external logic cabinets to issue instructions, resulting in cumbersome and susceptible to interference.
The analog control system and programmable logic controller module are integrated in the rod-controlled power cabinet. By running the rod speed setting module and the command signal dispatch module, the analog logic cabinet starts the rod command and directly issue timing instructions to the rod-controlled chassis to achieve independent performance testing.
It improves testing efficiency and system stability, reduces dependence on external logic cabinets, reduces potential interference and fault points, enhances the reliability of testing, and provides support for the safe operation of nuclear power plants.
Smart Images
Figure CN119620675A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of rod control systems in the field of nuclear power, and specifically relates to a rod control power supply cabinet and a method for simulating the issuance of control instructions of a rod control system. Background Art
[0002] In the field of nuclear power, the reactor is the core of the entire power plant, and its stable operation has a decisive impact on the safety and efficiency of the power plant. In order to maintain the stable operation of the reactor, an efficient and stable control system is required. As the core control system of the reactor, the rod control system undertakes the key task of regulating the power output of the reactor.
[0003] The rod control system usually includes a rod control chassis, a logic cabinet and a rod control power cabinet. The rod control power cabinet sends timing instructions to the rod control chassis. As the core component of the rod control system, the rod control chassis has the function of generating timing current to drive the actuator coil on site according to the timing instructions. The correctness and stability of this timing current are directly related to the power regulation effect of the reactor, which in turn affects the operating efficiency and safety of the entire nuclear power plant.
[0004] However, in the existing rod control system, during testing and operation, the core control system automatically sends the rod moving instructions to the logic cabinet, or the operator manually adjusts the rod moving instructions in the main control room and sends them to the logic cabinet, which then sends the rod moving instructions to the power cabinet. This method completely relies on the logic cabinet equipped on site to send the rod moving instructions. When testing the performance of the rod control chassis corresponding to a single rod cluster, this method needs to ensure that the logic cabinet is independent of other systems to avoid mutual interference. This process is not only time-consuming and labor-intensive, but also poses certain challenges to the stability and reliability of the system. Summary of the invention
[0005] In view of this, an embodiment of the present application is committed to providing a stick-controlled power supply cabinet and a method for simulating the issuance of control instructions for a stick control system, by integrating multiple modules for simulating the issuance of control instructions for a stick control system in the stick-controlled power supply cabinet, so as to solve the problems of low testing efficiency and poor reliability when testing the performance of a stick control chassis.
[0006] The first aspect of the present application provides a rod-controlled power cabinet, which includes an analog control system and a programmable logic controller module. The analog control system includes an operating rod speed setting module and an instruction signal sending module. The operating rod speed setting module and the instruction signal sending module are both connected to the programmable logic controller module in communication. The operating rod speed setting module is used to receive the preset control rod operating speed under different moving rod instructions input or selected by the user and transmit it to the programmable logic controller module synchronously. The instruction signal sending module is used to be electrically connected to the rod control chassis, and is used to simulate the nuclear power plant logic cabinet to send different moving rod instructions to the programmable logic controller module. The programmable logic controller module is used to send the timing instructions corresponding to the moving rod instructions to the rod control chassis according to the preset control rod operating speed under the moving rod instruction transmitted by the operating rod speed setting module and the moving rod instruction issued by the instruction signal sending module.
[0007] In a specific embodiment of the present application, the simulation control system further comprises an operation status feedback module. The operation status feedback module is used to provide real-time feedback of the operation status of the control rods and the operation steps of the rod bundle.
[0008] In a specific embodiment of the present application, the running state feedback module includes a step display device and a step counter connected to each other. The step counter is used to record the current running step position of the rod bundle in real time. The step display device is used to display the running step number of the rod bundle in real time.
[0009] In a specific embodiment of the present application, the simulation control system further includes a programmable logic controller reset module. The programmable logic controller reset module is in communication with the programmable logic controller module and is used to reset the programmable logic controller module and restore the rod cluster setting to zero step after the control rod completes the rod movement according to the rod movement instruction.
[0010] In a specific implementation of the present application, the command signal sending module is a knob switch or a selection switch.
[0011] The second aspect of the present application provides a method for simulating the issuance of control instructions for a rod control system, and the method for simulating the issuance of control instructions for a rod control system includes: a programmable logic controller module in a rod control power cabinet receives a control rod operating speed preset under different moving stick instructions transmitted by a running stick speed setting module; the programmable logic controller module receives any moving stick instruction among different moving stick instructions issued by a command signal issuing module; according to the moving stick instruction and the control rod operating speed preset under the moving stick instruction, the programmable logic controller module sends a timing instruction corresponding to the moving stick instruction to the rod control chassis.
[0012] In a specific embodiment of the present application, the method for simulating the issuance of control instructions for a rod control system also includes: using an operating status feedback module to monitor the operating status of the control rod in real time; a programmable logic controller reset module determines whether the control rod has completed the rod movement according to the rod movement instruction based on the operating status of the control rod; if the control rod has completed the rod movement according to the rod movement instruction, the programmable logic controller reset module resets the programmable logic controller module and restores the rod bundle setting to zero step; if the control rod has not completed the rod movement according to the rod movement instruction, the programmable logic controller module controls the instruction signal issuance module to make adjustments.
[0013] The beneficial effects of the technical solution of the present application are: by adding an analog control system in the rod control power supply cabinet, using the running rod speed setting module in the analog control system to transmit the preset control rod running speed under different moving rod instructions to the programmable logic controller module, using the command signal sending module in the analog control system to simulate the nuclear power plant logic cabinet to send different moving rod instructions to the programmable logic controller module, and using the programmable logic controller module to send the rod control chassis to the rod control chassis, so that only the rod control power supply cabinet can be used to realize the performance test of the rod control chassis corresponding to the rod bundle, avoiding the cumbersome process of relying on the external logic cabinet in the traditional method, greatly improving the test efficiency, shortening the test cycle, and reducing the test cost. Since the embodiment of the present application does not require the intervention of the external logic cabinet, it reduces potential interference factors and fault points, thereby improving the reliability of the test, adding a new direction for the rod control system test, and providing strong support for the safe and stable operation of the nuclear power plant, with significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Shown is a block diagram of a rod-controlled power supply cabinet provided in one embodiment of the present application.
[0015] Figure 2 Shown is a block diagram of a rod-controlled power supply cabinet provided in another embodiment of the present application.
[0016] Figure 3 Shown is a design diagram for issuing control instructions for a rod-controlled power supply cabinet provided in one embodiment of the present application.
[0017] Figure 4 Shown is a control rod lifting timing diagram provided by an embodiment of the present application.
[0018] Figure 5 Shown is a control rod insertion timing diagram provided by an embodiment of the present application.
[0019] Figure 6 Shown is a rod bundle operation status feedback design diagram provided in one embodiment of the present application.
[0020] Figure 7The figure is a flow chart of a method for issuing control instructions for a simulated stick control system provided in one embodiment of the present application.
[0021] Figure 8 The figure is a simplified flow chart of a method for issuing control instructions for a simulated stick control system provided in one embodiment of the present application. DETAILED DESCRIPTION
[0022] In order to solve the above-mentioned problems in the prior art and ensure that the lifting and insertion instructions are issued quickly and intuitively during the rod control chassis test without affecting other systems, it is necessary to develop an electrical design method for simulating the issuance of control instructions for the rod control system. This design can realize the performance test of the rod control chassis corresponding to a single rod bundle without relying on an external logic cabinet, thereby improving the test efficiency and system stability.
[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0024] At least one embodiment of the present application provides a rod-controlled power supply cabinet, referring to Figure 1 and Figure 2 The rod-controlled power cabinet 100 includes a simulation control system 10 and a programmable logic controller module 20. The simulation control system 10 includes a rod-operating speed setting module 11 and a command signal sending module 12. The rod-operating speed setting module 11 and the command signal sending module 12 are both connected to the programmable logic controller module 20 for communication. The rod-operating speed setting module 11 is used to receive the preset control rod operating speed under different moving rod instructions input or selected by the user and synchronously transmit it to the programmable logic controller module 20. The command signal sending module 12 is used to be electrically connected to the rod-controlled chassis 200, and is used to simulate the nuclear power plant logic cabinet to send different moving rod instructions to the programmable logic controller module 20. The programmable logic controller module 20 is used to send the timing instructions corresponding to the moving rod instructions to the rod-controlled chassis 200 according to the preset control rod operating speed under the moving rod instruction transmitted by the rod-operating speed setting module 11 and the moving rod instruction sent by the command signal sending module 12.
[0025] It should be noted that the programmable logic controller (PLC) module 20 can be referred to as a PLC module. The programmable logic controller module 20 can generate corresponding timing instructions according to the stick moving instructions, and the stick control box 200 can generate timing current according to the timing instructions to drive the actuator coil on site, thereby ensuring the correctness and stability of the timing current.
[0026] The user can set the preset control rod running speed under different moving rod instructions on the running rod speed setting module according to the on-site settings. Different moving rod instructions include but are not limited to lifting instructions, inserting instructions, and holding instructions.
[0027] The command signal sending module 12 is electrically connected to the rod control chassis 200, which can be achieved by connecting the command signal sending module 12 to the rod control chassis 200. The rod control chassis corresponding to the rod bundle may include a lifting chassis (LC), a transfer chassis (MC) and a holding chassis (SC). Figure 3 The promotion instruction may include an LC enlargement instruction, an MC enlargement instruction, and an SC enlargement instruction. The insertion instruction may include an MC decrement instruction, an LC decrement instruction, and an SC decrement instruction.
[0028] The instructions for upgrading or inserting a step are as follows Figure 4 and Figure 5 The power-on timing program is set in the program, and each chassis outputs a current value of corresponding size and duration according to the timing, which acts on the corresponding coil (lifting coil, transfer coil, holding coil) to enable the rod bundle to complete the lifting or lowering action.
[0029] Control rod lifting timing diagram reference Figure 4 There are seven mechanical actions in one step of rod bundle lifting, which are: transfer hook grabbing, holding hook withdrawing, load transfer (from holding hook falling to transfer hook), lifting armature attraction (transfer hook rising with rod), holding hook grabbing, transfer hook withdrawing, lifting armature release (transfer hook descending without rod).
[0030] Reference for control rod insertion timing diagram Figure 5 During normal insertion, the seven actions are: lifting armature absorbing (transfer hook rises without rod), transfer hook grabbing, holding hook withdrawing, load transfer (from holding hook falling to transfer hook), lifting armature releasing (transfer hook descends with rod), holding hook grabbing, and transfer hook withdrawing.
[0031] According to the technical solution provided in the embodiment of the present application, by adding a simulation control system 10 in the rod control power supply cabinet 100, the rod speed setting module 11 in the simulation control system 10 is used to transmit the preset control rod running speed under different moving rod instructions to the programmable logic controller module 20, and the command signal sending module 12 in the simulation control system 10 is used to simulate the nuclear power plant logic cabinet to send different moving rod instructions to the programmable logic controller module 20, and the programmable logic controller module 20 is used to send the rod control chassis 200 to send the rod command, so that only the rod control power supply cabinet 100 can be used to realize the performance test of the rod control chassis 200 corresponding to the rod bundle, avoiding the cumbersome process of relying on the external logic cabinet in the traditional method, greatly improving the test efficiency, shortening the test cycle, and reducing the test cost. Since the embodiment of the present application does not require the intervention of the external logic cabinet, it reduces potential interference factors and fault points, thereby improving the reliability of the test, adding a new direction for the rod control system test, and providing strong support for the safe and stable operation of the nuclear power plant, with significant economic benefits.
[0032] In addition, the overall structure of the rod-controlled power supply cabinet 100 is simple and the response speed is fast, and it can be applied to various types of nuclear power plants. The high flexibility and customizability of the rod-controlled power supply cabinet 100 enable the rod-controlled power supply cabinet 100 to adapt to various working conditions and needs, providing a reliable and efficient solution for nuclear power plants around the world.
[0033] As long as the command signal sending module 12 can be electrically connected to the rod control chassis 200 and can simulate the nuclear power plant logic cabinet to send different moving rod instructions to the rod control power cabinet 100 according to the preset control rod running speed under different moving rod instructions obtained from the running rod speed setting module 11, on this basis, the specific structure of the command signal sending module 12 is not limited in the embodiment of the present application. For example, in some embodiments, the command signal sending module 12 is a knob switch or a selection switch. It should be noted that the command signal sending module 12 can directly output a high-level signal to the programmable logic controller module 20, and then send a lifting instruction, an insertion instruction, and a holding instruction to the rod control chassis.
[0034] As long as the rod cluster setting module 11 can receive the preset control rod operating speed under different rod moving instructions input or selected by the user and synchronously transmit it to the programmable logic controller module 20, on this basis, the embodiment of the present application does not limit the specific structure of the rod cluster setting module 11. The user can input or select the preset control rod operating speed through the rod cluster setting module. The control rod operating speed is also the speed used to control the lifting, insertion or retention of the rod cluster. The rod cluster setting module 11 can select a module that interacts with the programmable logic controller module 20, for example, the rod cluster setting module 11 can have a module with a built-in speed preset function.
[0035] In at least one embodiment of the present application, the simulation control system 10 further includes an operation status feedback module 13. The operation status feedback module 13 is used to provide real-time feedback of the operation status of the control rods and the number of operation steps of the rod bundle. Thus, by adding the operation status feedback module 13 to the simulation control system 10, the operation status of the control rods and the number of operation steps of the rod bundle can be monitored in real time by using the operation status feedback module 13, which facilitates the test and further ensures the stability of the system, which provides important support for the safe and stable operation of the nuclear power plant and has important practical value.
[0036] The operation state feedback module 13 only needs to be able to provide real-time feedback on the operation state of the control rods and the operation steps of the rod cluster. On this basis, the specific structure of the operation state feedback module 13 is not limited in the embodiments of the present application. For example, in some embodiments, the operation state feedback module 13 includes a step display device and a step counter connected thereto. The step counter is used to record the current operation step position of the rod cluster in real time. The step display device is used to display the operation steps of the rod cluster in real time.
[0037] For example, the rod bundle operation status feedback design diagram can be as follows Figure 6 shown. Figure 6 In the example, 104BN-1 is connected to the 3rd pin of the running state feedback module 13, which is the running step plus one signal input by the rod control power cabinet PLC. 104BN-2 is connected to the 4th pin of the running state feedback module 13, which is the running step minus one signal input by the rod control power cabinet PLC. 104BN-3 is connected to the 7th pin of the running state feedback module 13, which is the reset signal input by the PLC reset module. 104BN-10 and 104BN-15 are connected to the 5th and 12th pins of the running state feedback module 13 to provide +24V power supply for the running state feedback module 13. The 5th and 13th pins of the running state feedback module 13 are in a short-circuited state internally.
[0038] In at least one embodiment of the present application, the simulation control system 10 further includes a programmable logic controller reset module (PLC reset module for short) 14. The programmable logic controller reset module 14 is in communication with the programmable logic controller module 20 and is used to reset the programmable logic controller module 20 and restore the rod cluster setting to zero step after the control rod completes the rod movement according to the rod movement instruction.
[0039] PLC reset function: 1. After reset, verify the current release of each coil to ensure that it can be discharged immediately after reset. In actual application, the control rod falls by gravity without the action of the coil to ensure the safety function of the core. 2. Used to reset the program to restore the program to its initial state, so as to facilitate the execution of the next verification procedure.
[0040] It should be noted that, after the programmable logic controller module 20 is reset, the operation state feedback module 13 feedbacks that the current operation step position of the rod cluster is zero. The programmable logic controller reset module 14 can use a normally open button switch.
[0041] At least one embodiment of the present application further provides a method for simulating the issuance of control instructions for a stick control system, and the method for simulating the issuance of control instructions for a stick control system is executed using the stick control power supply cabinet 100 in any of the above embodiments. Figure 7 The method for sending control instructions for the simulated stick control system includes the following steps.
[0042] S1: The programmable logic controller module 20 in the rod control power supply cabinet 100 receives the preset control rod running speed under different moving rod instructions transmitted by the running rod speed setting module 11.
[0043] For example, when the rod cluster is lifted or inserted, the user may first set the control rod operating speed preset under the corresponding moving rod instruction in the operating rod cluster setting module 11 , and the operating rod cluster setting module 11 may synchronously transmit the speed to the programmable logic controller module 20 .
[0044] It should be noted that before executing the method for simulating the issuance of control instructions for the stick control system, it is possible to first check whether the wiring status and power supply status in the stick control power cabinet 100 and the stick control chassis 200 are normal.
[0045] S2: The programmable logic controller module 20 receives any one of the different moving stick instructions issued by the instruction signal issuing module 12 .
[0046] For example, the command signal sending module 12 sends any moving rod command to the programmable logic controller module 20 to control the operation of the rod cluster, and the command signal sending module 12 can be used to manually set any moving rod command to control the timing current output.
[0047] S3: According to the moving rod instruction and the control rod running speed preset under the moving rod instruction, the programmable logic controller module 20 sends a timing instruction corresponding to the moving rod instruction to the rod control box 200.
[0048] In at least one embodiment of the present application, reference Figure 8 The method for sending control instructions for the simulated stick control system also includes the following steps.
[0049] S4: Use the operation status feedback module 13 to monitor the operation status of the control rod in real time.
[0050] S5: The programmable logic controller reset module 14 determines whether the control rod has completed the rod movement according to the rod movement instruction according to the control rod operation status.
[0051] S6: If the control rods complete the rod movement according to the rod movement instruction, the programmable logic controller reset module 14 performs reset control on the programmable logic controller module 20 and restores the rod cluster setting to zero step.
[0052] For example, after completing the operation steps, the PLC reset module recovers and stops the operation. During the whole process, the operation status feedback module can record the current operation step position of the rod bundle in real time.
[0053] S7: If the control rod does not move according to the rod moving instruction, the programmable logic controller module 20 controls the instruction signal sending module 12 to make adjustments.
[0054] It should be noted that since the method for simulating the issuance of control instructions for the rod control system is executed using the rod-controlled power supply cabinet 100 in any of the above-mentioned embodiments, it includes the corresponding technical features of the rod-controlled power supply cabinet 100 in any of the above-mentioned embodiments and can achieve the corresponding technical effects, it will not be repeated here.
[0055] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the term "comprising" only indicates that the steps and elements that have been clearly identified are included, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.
[0056] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A rod-controlled power supply cabinet, characterized in that: Including analog control system and programmable logic controller modules, The simulation control system includes a running rod speed setting module and a command signal sending module, and both the running rod speed setting module and the command signal sending module are connected to the programmable logic controller module for communication. The operating rod speed setting module is used to receive the preset control rod operating speed under different operating rod instructions input or selected by the user and synchronously transmit it to the programmable logic controller module; The command signal sending module is used to be electrically connected to the rod control chassis, and is used to simulate the nuclear power plant logic cabinet to send different rod moving commands to the programmable logic controller module; The programmable logic controller module is used to send timing instructions corresponding to the stick instructions to the stick control chassis according to the preset control rod running speed under the stick instruction transmitted by the running rod speed setting module and the stick instruction issued by the instruction signal sending module.
2. A rod-controlled power supply cabinet according to claim 1, characterized in that: The simulation control system also includes an operation status feedback module, which is used for real-time feedback of the operation status of the control rods and the number of operation steps of the rod bundle.
3. The rod-controlled power supply cabinet according to claim 1, characterized in that: The running state feedback module comprises a step display device and a step counter which are connected to each other. The step counter is used to record the current running step position of the rod bundle in real time, and the step display device is used to display the running step number of the rod bundle in real time.
4. A rod-controlled power supply cabinet according to any one of claims 1 to 3, characterized in that: The analog control system also includes a programmable logic controller reset module, The programmable logic controller reset module is in communication connection with the programmable logic controller module and is used for resetting the programmable logic controller module and restoring the rod cluster setting to zero step after the control rod completes the rod movement according to the rod movement instruction.
5. A rod-controlled power supply cabinet according to any one of claims 1 to 3, characterized in that: The command signal sending module is a knob switch or a selection switch.
6. A method for issuing control instructions for a simulated stick control system, characterized in that: The method for simulating the issuance of control instructions of a stick control system, which is performed by the stick control power supply cabinet according to any one of claims 1 to 5, comprises: The programmable logic controller module in the rod control power cabinet receives the preset control rod running speed under different moving rod instructions transmitted by the running rod speed setting module; The programmable logic controller module receives any one of the different moving stick instructions issued by the instruction signal issuing module; According to the moving rod instruction and the control rod running speed preset under the moving rod instruction, the programmable logic controller module sends a timing instruction corresponding to the moving rod instruction to the rod control chassis.
7. A method for issuing control instructions for a simulated stick control system according to claim 6, characterized in that: The method for simulating the issuance of control instructions of a stick control system by using the stick control power supply cabinet as claimed in claim 4 further includes: Use the operation status feedback module to monitor the operation status of the control rod in real time; The programmable logic controller reset module determines whether the control rod has completed the rod movement according to the rod movement instruction according to the operation status of the control rod; If the control rod completes the rod moving according to the rod moving instruction, the programmable logic controller reset module performs reset control on the programmable logic controller module and restores the rod cluster setting to zero step; If the control rod fails to move according to the rod moving instruction, the programmable logic controller module controls the instruction signal sending module to make adjustments.