Movable rod falling test tool box and rod falling test method thereof

Abstract

The invention provides a movable rod falling test tool box for a nuclear power station rod position system, and the movable rod falling test tool box is in communication connection with a data collection cabinet of the nuclear power station rod position system, and is used for obtaining rod falling data from the data collection cabinet. The movable rod falling test tool box at least comprises a controller and a function card which are integrated in a case; and the controller is used for sending a rod falling test instruction to the data acquisition cabinet, acquiring rod falling data based on the rod falling test instruction and processing the rod falling data based on a preset processing mode so as to complete a rod falling test. According to the movable rod falling test tool box provided by the invention, a rod falling test can be carried out nearby the data acquisition cabinet under the condition that the movable rod falling test tool box is separated from the rod falling test cabinet, so that the problems of inconvenience in communication of personnel, incapability of observing the communication state of equipment in time and the like caused by a long distance are solved, and the test working efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of instrumentation and control system equipment testing and rod position system testing in nuclear power plants, and in particular to a movable rod drop test tool box and a rod drop test method thereof. Background Art

[0002] It has become a trend for nuclear power plants to replace coal-fired power plants in large numbers. In nuclear power plants, a digital rod position indication system (hereinafter referred to as the "rod position system") is usually used to detect, monitor and test the actual position of the control rods.

[0003] The rod position system consists of a data acquisition cabinet, a logic processing cabinet, a rod drop test cabinet, and a rod position detector. The rod position detector detects the actual position of the control rods. After data acquisition and logic processing, the actual rod position is obtained. The rod drop test cabinet (hereinafter referred to as the "rod drop cabinet") tests the control rod drop function. This cabinet, together with the data acquisition equipment in the data acquisition cabinet, constitutes the rod drop test subsystem, which is capable of performing rod drop tests.

[0004] During the rod drop test, the rod drop test subsystem monitors the status of the shutdown circuit breaker. When the shutdown circuit breaker is detected to be in the open state, the data acquisition equipment records the rod drop data and sends the information to the rod drop cabinet. The rod drop cabinet processes the received information and displays the required rod drop curve on the screen inside the cabinet.

[0005] However, the current data acquisition cabinet of a pressurized water reactor nuclear power plant is installed inside the containment, while the rod drop cabinet is installed outside the containment. As a result, during the rod drop test during the overhaul, a large amount of communication between the data acquisition cabinet and the rod drop cabinet cannot be carried out directly, affecting the efficiency of the test work. At the same time, signal transmission between devices also causes communication failures due to the long distance, resulting in repeated testing, increased equipment damage and affecting the overhaul progress. After the on-site test is completed, special equipment is required to view, analyze and summarize the rod drop data offline. Summary of the Invention

[0006] The technical problem to be solved by the present disclosure is to overcome the defect of low efficiency of the drop rod test in the prior art, and to provide a movable drop rod test tool box and a drop rod test method thereof.

[0007] The present disclosure solves the above technical problems through the following technical solutions:

[0008] According to a first aspect of the present disclosure, a movable rod drop test toolbox for a rod position system of a nuclear power plant is provided. The movable rod drop test toolbox is communicatively connected to a data acquisition cabinet of the rod position system of the nuclear power plant and is used to obtain rod drop data from the data acquisition cabinet.

[0009] The movable drop rod test tool box includes at least a controller and a function card integrated in the box;

[0010] The controller is in communication with the function card;

[0011] The controller is configured to send a rod drop test instruction to the data acquisition cabinet, and obtain the rod drop data based on the rod drop test instruction;

[0012] The function card is used to send clock synchronization signals to different data acquisition cabinets to ensure that different data acquisition cabinets remain synchronized during the signal acquisition process;

[0013] The controller is further configured to process the rod drop data based on a preset processing method to complete the rod drop test.

[0014] Optionally, the movable drop rod test tool box further includes a power supply module;

[0015] The power supply module is used to supply power to the data acquisition cabinet.

[0016] Optionally, the movable drop rod test tool box further includes a switch module;

[0017] The switch module is used to control the on and off of the power module.

[0018] Optionally, the movable drop rod test toolbox further includes a display module;

[0019] The display module is communicatively connected with the controller;

[0020] The display module is used to display the rod drop data.

[0021] Optionally, the movable drop rod test toolbox further comprises an interaction module;

[0022] The interaction module is communicatively connected with the display module;

[0023] The interaction module is used to implement interaction with the movable drop rod test tool box.

[0024] Optionally, the interaction module includes a keyboard and a touchpad.

[0025] Optionally, the movable drop rod test tool box further includes a communication interface and a communication cable;

[0026] The movable drop rod test tool box is communicatively connected to the data acquisition cabinet, specifically comprising:

[0027] The movable drop rod test tool box is communicatively connected to the preset data acquisition cabinet based on the communication interface and the communication cable.

[0028] Optionally, the movable drop rod test tool box is made of aluminum alloy.

[0029] Optionally, the internal architecture of the movable drop rod test tool box is a CPCI architecture.

[0030] According to a second aspect of the present disclosure, a drop rod test method is provided, wherein the drop rod test method is implemented based on the movable drop rod test toolbox according to the first aspect of the present disclosure;

[0031] The movable drop rod test tool box is communicatively connected to the data acquisition cabinet;

[0032] The drop rod test method includes:

[0033] Sending a drop rod test instruction to the data acquisition cabinet based on the movable drop rod test tool box;

[0034] Acquiring the rod drop data in the data acquisition cabinet based on the rod drop test instruction;

[0035] The rod drop data is pre-processed based on a preset processing method to complete the rod drop test.

[0036] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0037] The positive progress of this disclosure is:

[0038] The movable drop rod test toolbox provided by the present invention can perform drop rod testing near the data acquisition cabinet under the condition of being away from the drop rod test cabinet, avoiding the problems of inconvenience in personnel communication and inability to observe the equipment communication status in time due to the long distance, thereby improving the test work efficiency and reducing the main line occupancy time; when the drop rod cabinet is not available, the movable drop rod test toolbox can still be used to perform drop rod testing; at the same time, the movable drop rod test toolbox provides the function of offline viewing and analysis of drop rod data, which is convenient for test personnel to realize offline data viewing and analysis in the office after the test work is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the structure of the movable drop rod test tool box in Example 1 of the present disclosure;

[0040] Figure 2 This is a structural diagram of a movable drop rod test tool box used in Example 1 of the present disclosure;

[0041] Figure 3 This is a physical representation of the movable drop rod test tool box in Example 1 of the present disclosure. Figure 1 ;

[0042] Figure 4 This is a physical representation of the movable drop rod test tool box in Example 1 of the present disclosure. Figure 2 ;

[0043] Figure 5 This is a physical representation of the movable drop rod test tool box in Example 1 of the present disclosure. Figure 3 ;

[0044] Figure 6 Schematic diagram of the process of the drop rod test method in Example 2 of the present disclosure;

[0045] Figure 7 This is a schematic diagram of the main screen of the stick drop software during the stick drop test in Example 2 of the present disclosure;

[0046] Figure 8 Schematic diagram of rod drop combined waveforms during the rod drop test in Example 2 of the present disclosure. DETAILED DESCRIPTION

[0047] The present disclosure is further illustrated below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0048] In the embodiments of the present disclosure, prefixes such as "first" and "second" are used only to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. In the embodiments of the present disclosure, the use of prefixes such as ordinal numbers to distinguish description objects does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and no unnecessary limitations should be constituted due to the use of such prefixes. In addition, in the description of this embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

[0049] Example 1

[0050] This embodiment provides a movable rod drop test toolbox for a rod position system of a nuclear power plant. The movable rod drop test toolbox is communicatively connected to a data acquisition cabinet of the rod position system of the nuclear power plant, and is used to obtain rod drop data from the data acquisition cabinet.

[0051] like Figure 1 As shown, the movable drop rod test tool box at least includes a controller 100 and a function card 200 integrated in the box.

[0052] The controller 100 is in communication with the function card 200 ; the controller 100 is used to send a rod drop test instruction to the data acquisition cabinet and obtain rod drop data based on the rod drop test instruction.

[0053] Among them, the movable drop rod test tool box includes a chassis, and there is a chassis backplane in the chassis. There are insertion ports on the chassis backplane for the controller and function card to be inserted, thereby realizing communication between the controller and the function card. There are complex circuit wiring inside the chassis backplane. These wirings are used to transmit signals between the controller and the function card, thereby ensuring the integrity and stability of the signal during the transmission process.

[0054] Function card 200 is used to send clock synchronization signals to different data acquisition cabinets to ensure that different data acquisition cabinets remain synchronized during the signal acquisition process.

[0055] The controller 100 is further configured to process the rod drop data based on a preset processing method to complete the rod drop test.

[0056] The movable drop rod test toolbox provided by the present invention can perform drop rod testing near the data acquisition cabinet under the condition of being away from the drop rod test cabinet, avoiding the problems of inconvenience in personnel communication and inability to observe the equipment communication status in time due to the long distance, thereby improving the test work efficiency and reducing the main line occupancy time; when the drop rod cabinet is not available, the movable drop rod test toolbox can still be used to perform drop rod testing; at the same time, the movable drop rod test toolbox provides the function of offline viewing and analysis of drop rod data, which is convenient for test personnel to realize offline data viewing and analysis in the office after the test work is completed.

[0057] The movable drop rod test tool box in this embodiment further includes a power supply module 300 ; the power supply module is used to supply power to the data acquisition cabinet.

[0058] In one embodiment, the power supply module is a 24VDC power supply.

[0059] By setting up the power module, power is supplied to the rod drop collection unit in the data acquisition cabinet, thus laying the foundation for acquiring rod drop data in the rod drop collection cabinet. In addition, by setting up the power module, the convenience of the operator in collecting rod drop data is improved.

[0060] The movable drop rod test tool box in this embodiment further includes a switch module 400 ; the switch module controls the on and off of the power supply module.

[0061] In one embodiment, the switch module is a toggle switch or a push button switch, which controls the on and off of the switch according to the needs of the operator, thereby determining the on and off of the circuit in the data acquisition cabinet of the power module.

[0062] By setting the switch module, the control line can be turned on and off, thereby controlling the power signal output of the power module, and the test environment can be quickly established by directly plugging and unplugging the connector.

[0063] The movable rod drop test tool box in this embodiment further includes a display module 500 ; the display module is in communication with the controller; and the display module is used to display rod drop data.

[0064] Through the setting of the display module, users can intuitively obtain the rod drop data, thereby improving the user experience.

[0065] The movable drop rod test toolbox in this embodiment further includes an interaction module 600 ; the interaction module is in communication connection with the display module; and the interaction module is used to implement interaction with the movable drop rod test toolbox.

[0066] In one embodiment, the interaction module includes a keyboard and a touchpad.

[0067] Through the setting of the interactive module, it is convenient to display the rod drop test process, such as the rod drop curve, operation screen, sending instructions, communication status display and other functions, to improve the user experience.

[0068] The movable drop rod test toolbox in this embodiment further includes a communication interface and a communication cable;

[0069] The movable drop rod test tool box is connected to the data acquisition cabinet in communication, specifically including:

[0070] The movable drop rod test tool box realizes communication connection with a preset data acquisition cabinet based on a communication interface and a communication cable.

[0071] By setting up the communication interface and communication cable, it is possible to carry out the drop rod test near the data acquisition cabinet without having to worry about the drop rod test cabinet. This avoids problems such as inconvenience in personnel communication and inability to observe the equipment communication status in time due to long distances, improves test work efficiency, and reduces main line occupancy time.

[0072] The material of the movable drop-rod test tool box in this embodiment is aluminum alloy; the internal structure of the movable drop-rod test tool box in this embodiment is a CPCI structure.

[0073] Specifically, this movable drop rod test tool adopts an aluminum alloy material structure, special corner guards and handles, the overall appearance of the chassis is spray-painted, and the interior is a CPCI-structured aluminum profile structure, which enables the movable drop rod test tool to operate stably in complex environments and improve test efficiency.

[0074] The following describes the implementation principle of the movable drop rod test toolbox in the embodiment of the present disclosure with a specific embodiment:

[0075] like Figures 2 to 5 As shown in the figure, the movable drop rod test tool includes a chassis, controller, display, card components and prefabricated cables. The main hardware description is as follows:

[0076] The internal controller acts as a central processing unit (CPU). The data acquisition cabinet transmits the rod drop test waveforms collected by the data acquisition cabinet to the controller via a network cable. The controller then uses algorithms to combine, filter, and analyze the raw rod drop signals, displaying the rod drop curve on the screen. Once all rod cluster drop tests are complete, the average rod drop time and upper and lower limits are analyzed, and any exceeding rod clusters are identified. The final rod drop test results can be saved to disk.

[0077] The tester is equipped with a 17-inch industrial display, uses 220VAC 50Hz or 24VDC as its input power source, and features a keyboard and touchpad for conveniently displaying the rod drop curve and operation screen. Communication status with the data acquisition cabinet, status indicators, rod drop test instructions, and rod group selection information are all transmitted via network cables and displayed on the screen.

[0078] The internal functional card sends a clock synchronization signal to the data acquisition cabinet through the coaxial cable signal line. This signal is used to control the sampling time of the two data acquisition cabinets to ensure that the two cabinets remain synchronized during the signal acquisition process.

[0079] The internal switching power supply, toggle switch, etc. send a relay power supply signal to the data acquisition cabinet through the communication cable. When the switch is turned, the test tool connects the 24VDC power supply to the relay coil in the data acquisition cabinet through the signal line, so that its contacts are attracted to realize the function of powering the data acquisition equipment in the cabinet.

[0080] In addition to network cables and coaxial cables, the signal cable used to send relay power supply signals uses a quick-plug connector on the test device side, and the other end is a loose wire. The loose wire can be directly connected to the corresponding signal terminal block in the on-site data acquisition cabinet to achieve rapid construction of the test environment.

[0081] A trigger switch is reserved on the panel. During on-site testing, the signal for powering the relay in the data acquisition cabinet can be controlled directly by controlling this switch according to the test requirements. This reduces the difficulty of hardware configuration and software while meeting the functional requirements, optimizes the convenience of on-site operation, and thus improves test efficiency.

[0082] Example 2

[0083] This embodiment provides a drop rod test method, which is implemented based on the movable drop rod test toolbox described in Example 1;

[0084] The movable drop rod test tool box is communicatively connected with the data acquisition cabinet;

[0085] like Figure 6 As shown, the drop rod test method includes:

[0086] S61: Sending a rod drop test instruction to the data acquisition cabinet based on the movable rod drop test tool box;

[0087] S62: Obtaining rod drop data in the data acquisition cabinet based on the rod drop test instruction;

[0088] S63: Pre-processing the rod drop data based on a preset processing method to complete the rod drop test.

[0089] The drop rod test method provided by the present invention can perform the drop rod test near the data acquisition cabinet without using the drop rod test cabinet, thereby avoiding problems such as inconvenience in personnel communication and inability to timely observe the equipment communication status due to long distances, improving the test work efficiency, and reducing the main line occupancy time; when the drop rod cabinet is unavailable, the movable drop rod test toolbox can still be used to perform the drop rod test; at the same time, the function of offline viewing and analysis of the drop rod data is provided, which is convenient for the test personnel to realize offline data viewing and analysis in the office after the test work is completed.

[0090] In one specific embodiment, the preset processing method is the rod drop system software. The rod drop system software is designed by combining different functional modules to achieve the design and development of the overall software, the functions and operation processes of each module of the software, and realizes its software functions based on the controller. This is the existing technology and will not be elaborated on here.

[0091] During the test, the movable rod drop test tool performs the functions of the rod drop test cabinet: sends a rod drop test command signal to the data acquisition cabinet; establishes communication with the data acquisition equipment and displays the communication status on the main screen; sends a clock signal to the data acquisition cabinet to ensure the synchronization of the acquisition time of the two data acquisition cabinets; can collect the rod drop waveforms of channels A and B and generate a filtered synthetic waveform; can determine the rod drop time; and can generate a rod drop report.

[0092] like Figures 7 and 8 As shown, the rod drop system software is designed to test the rod drop time of any rod bundle combination. The rod drop system software can display the following items on the screen:

[0093] Original rod drop curve of coil "A"

[0094] Original rod drop curve of coil "B"

[0095] Filtered and merged curves of coil "A" and coil "B"

[0096] Overlay display of arbitrary falling rod waveform curve

[0097] The rod drop system software can also print a report on the drop of a single bundle of rods, including information such as the rod drop curve. After all rods have successfully dropped within this cycle, a report can be printed.

[0098] Through the rod-drop software, it is connected to the data acquisition equipment in the data acquisition cabinet to receive the rod-drop data file generated by the induced voltage signal from the rod position detector coil. The controller merges and filters the original rod-drop signal, analyzes the waveform, and determines the rod-drop time. When all rod bundles are dropped in this cycle, the average rod-drop time and the upper and lower limits of rod drop can be analyzed, and the rod bundles that exceed the limit can be determined. Through the rod-drop software screen, status parameter settings, rod selection, and rod-drop start operations can be performed; historical rod-drop waveforms can be viewed, and single-rod or summary reports can be printed.

[0099] While specific embodiments of the present disclosure have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, and such changes and modifications are intended to fall within the scope of protection of the present disclosure.

Claims

1. A movable rod drop test tool box for a rod position system in a nuclear power plant, characterized in that: The movable rod drop test tool box is communicatively connected to the data acquisition cabinet of the rod position system of the nuclear power plant, and is used to obtain rod drop data from the data acquisition cabinet; The movable drop rod test tool box includes at least a controller and a function card integrated in the box; The controller is in communication with the function card; The controller is configured to send a rod drop test instruction to the data acquisition cabinet, and obtain the rod drop data based on the rod drop test instruction; The function card is used to send clock synchronization signals to different data acquisition cabinets to ensure that different data acquisition cabinets remain synchronized during the signal acquisition process; The controller is further configured to process the rod drop data based on a preset processing method to complete the rod drop test.

2. The movable drop rod test tool box according to claim 1, characterized in that: The movable drop rod test tool box also includes a power supply module; The power supply module is used to supply power to the data acquisition cabinet.

3. The movable drop rod test tool box according to claim 2, characterized in that: The movable drop rod test tool box further includes a switch module; The switch module is used to control the on and off of the power module.

4. The movable drop rod test tool box according to claim 1, characterized in that: The movable drop rod test tool box further includes a display module; The display module is communicatively connected with the controller; The display module is used to display the rod drop data.

5. The movable drop rod test tool box according to claim 4, characterized in that: The movable drop rod test toolbox further includes an interaction module; The interaction module is communicatively connected with the display module; The interaction module is used to implement interaction with the movable drop rod test tool box.

6. The movable drop rod test tool box according to claim 5, characterized in that: The interaction module includes a keyboard and a touch panel.

7. The movable drop rod test tool box according to claim 1, characterized in that: The movable drop rod test tool box also includes a communication interface and a communication cable; The movable drop rod test tool box is communicatively connected to the data acquisition cabinet, specifically comprising: The movable drop rod test tool box is communicatively connected to the preset data acquisition cabinet based on the communication interface and the communication cable.

8. The movable drop rod test tool box according to any one of claims 1 to 7, characterized in that: The movable drop rod test tool box is made of aluminum alloy.

9. The movable drop rod test tool box according to claim 8, characterized in that: The internal architecture of the movable drop rod test tool box is a CPCI architecture.

10. A drop rod test method, characterized in that: The drop rod test method is implemented based on the movable drop rod test toolbox according to any one of claims 1 to 9; The movable drop rod test tool box is communicatively connected to the data acquisition cabinet; The drop rod test method includes: Sending a drop rod test instruction to the data acquisition cabinet based on the movable drop rod test tool box; Acquiring the rod drop data in the data acquisition cabinet based on the rod drop test instruction; The rod drop data is pre-processed based on a preset processing method to complete the rod drop test.

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