Automatic detection device and method for manual control station of nuclear power plant main control room

Abstract

The application belongs to the technical field of maintenance optimization, and discloses an automatic detection device and method for a hand-operated station in a main control room of a nuclear power plant. The automatic detection device comprises a host computer, a NI virtual test instrument, a plurality of analog quantity board cards, and a plurality of to-be-detected hand-operated stations used in cooperation with the plurality of analog quantity board cards. The host computer records input voltage into the analog quantity board cards through the NI virtual test instrument. The input voltage is input into the analog quantity board cards and output from the analog quantity board cards to the to-be-detected hand-operated stations, and the to-be-detected hand-operated stations display voltage display values. The host computer collects voltage theoretical values output from the analog quantity board cards through the NI virtual test instrument. The host computer records the input voltage, the voltage display values and the voltage theoretical values, and obtains deviation values of the voltage display values and the voltage theoretical values to realize automatic detection of the to-be-detected hand-operated stations. The automatic detection device and method for the hand-operated station in the main control room of the nuclear power plant can automatically test new spare parts and aging test machines, quickly locate fault points, and provide operation and maintenance skill training functions.

Description

[Technical Field]

[0001] This invention belongs to the field of maintenance and optimization technology. More specifically, this invention relates to an automatic detection device and method for a manual control station in the main control room of a nuclear power plant. [Background Technology]

[0002] The manual control station in the main control room of a nuclear power plant is used to display the operating status of relevant systems of the nuclear power unit. It also has certain control functions. Operators can judge whether the current operating status is normal based on the information displayed on the manual control station. When necessary, they can manually adjust and control the system through the manual control station to ensure the stable and reliable operation of the relevant systems.

[0003] Typically, the manual control station in the main control room is based on an analog moving coil table architecture, and is gradually transitioning to a digital manual control station. In actual use, due to frequent operation, the manual control station needs to be replaced frequently to meet the requirements of daily preventive maintenance. However, due to the lack of offline testing and burn-in methods, the verification work after equipment replacement often needs to be carried out on the control room panel, and it is impossible to correctly assess the long-term reliability of the equipment, introducing safety risks into the operating system and posing certain hidden dangers to the unit operation.

[0004] Safety is paramount in nuclear power plant operation. Any introduced risk could lead to system fluctuations, requiring continuous adjustments, power reduction, or even a safe shutdown. Currently, nuclear power plants lack inspection, testing, and burn-in platforms for such components, making it impossible to perform full-function offline testing on new spare parts. This also hinders the comprehensive identification of quality defects generated during manufacturing, potentially introducing risks after installation in the unit. Furthermore, manual operation station components have a high failure rate. Due to the highly integrated 8-pin, 8-core interface, it's difficult to pinpoint the fault location and determine the root cause through offline power-on testing. A conservative approach of replacing the entire component is typically used, often resulting in a waste of these expensive spare parts (approximately 200,000 RMB each). The lack of an offline operating platform for manual operation stations also hinders training in their use and maintenance skills.

[0005] Therefore, it is necessary to provide a new type of automatic detection device and method for the manual control station in the main control room of a nuclear power plant to overcome the above-mentioned defects. [Summary of the Invention]

[0006] The purpose of this invention is to provide an automatic testing device and method for the manual control station in the main control room of a nuclear power plant. This device can automatically test and burn-in new spare parts, identify various defects in the spare parts in advance through test data, quickly locate fault points, and provide training functions for manual control station operation, use, and maintenance skills.

[0007] To achieve the aforementioned objectives, in a first aspect, the present invention provides an automatic testing device for a manual control station in the main control room of a nuclear power plant, comprising: a host computer, an NI virtual test instrument, a plurality of analog signal boards, and a plurality of manual control stations to be tested used in conjunction with the plurality of analog signal boards. The host computer inputs an input voltage into the analog signal boards via the NI virtual test instrument; the input voltage is input into the analog signal boards and output by the analog signal boards to the manual control stations to be tested, whereby the manual control stations display a voltage value; the host computer acquires the theoretical voltage value output by the analog signal boards via the NI virtual test instrument; the host computer records the input voltage, the displayed voltage value, and the theoretical voltage value, and obtains the deviation between the displayed voltage value and the theoretical voltage value to achieve automatic testing of the manual control stations to be tested.

[0008] In a preferred embodiment, the automatic detection device further includes a cabinet, the cabinet including a top wall, a bottom wall and a plurality of side walls connecting the top wall and the bottom wall, the top wall, the bottom wall and the plurality of side walls forming a receiving space, and the plurality of analog quantity boards are received in the receiving space.

[0009] In a preferred embodiment, a vertical plate is fixed on the top wall, one end of the vertical plate is connected to an inclined mounting surface, and the inclined mounting surface has a plurality of mounting holes, into which the manual operating station to be tested is inserted.

[0010] In a preferred embodiment, a cable tray is connected between the mounting ramp and the upright plate, and the cable tray is used to fix the cable connected to the manual operating station to be tested.

[0011] In a preferred embodiment, the cable tray includes a fixed base and multiple slot walls. The fixed base is fixed to the upright plate. The fixed base and the slot walls, as well as adjacent slot walls, are connected by damping shafts. The slot walls have grooves, and the cables are fixed in the grooves.

[0012] In a preferred embodiment, the NI virtual test instrument is fixed to one of the sidewalls.

[0013] In a preferred embodiment, the automatic testing device further includes a power supply fixed to a side wall opposite the location of the NI virtual test instrument.

[0014] In a preferred embodiment, the cabinet has a drawer near the top wall, the host computer is housed in the drawer, and the host computer is connected to the NI virtual test instrument via a network cable.

[0015] In a preferred embodiment, the cabinet also houses multiple circuit boards for electrically connecting the NI virtual test instrument to the analog signal board, and the analog signal board to the manual test station.

[0016] Secondly, the present invention also provides an automatic detection method for a manual control station in the main control room of a nuclear power plant, which is applied in the automatic detection device for the manual control station in the main control room of the nuclear power plant of the present invention. The automatic detection method includes the following steps:

[0017] The host computer inputs the input voltage into the analog circuit board via NI virtual test instrument;

[0018] The input voltage is input to the analog signal board and output by the analog signal board to the manual station under test, where the manual station under test displays the voltage value.

[0019] The host computer acquires the theoretical voltage value output by the analog signal board through the NI virtual test instrument;

[0020] The host computer records the input voltage, the displayed voltage value, and the theoretical voltage value, and obtains the deviation between the displayed voltage value and the theoretical voltage value to achieve automatic detection of the manual station under test.

[0021] Compared to existing technologies, the automatic detection device and method for the manual control station in the main control room of a nuclear power plant provided by this invention allows the host computer to input the input voltage into an analog signal board via an NI virtual test instrument. The analog signal board provides the input signal to the manual control station under test, which displays the voltage value. The host computer collects the theoretical voltage value output by the analog signal board through the NI virtual test instrument. The host computer can record the input voltage, the displayed voltage value, and the theoretical voltage value, and obtain the deviation between the displayed voltage value and the theoretical voltage value to achieve automatic detection of the manual control station under test. This enables automatic testing and aging burn-in of new spare parts, allowing for early identification of various defects in spare parts and avoiding impacts on the safe operation of the unit. The data entered by the host computer serves as the basis for analyzing the root cause of faults in the manual control station, enabling rapid fault location and facilitating the development of accurate maintenance technical solutions and equipment management plans by maintenance personnel, thereby improving the overall reliability of the equipment and the economy of maintenance. Furthermore, during the automatic detection process, the device enables training in the operation and maintenance skills of the manual control station, quickly and effectively improving the skill level of maintenance personnel. [Attached Image Description]

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The schematic diagram of the automatic detection device for the manual control station in the main control room of a nuclear power plant provided by the present invention.

[0024] Figure 2 A structural diagram of the automatic detection device for the manual control station in the main control room of a nuclear power plant provided by the present invention;

[0025] Figure 3 Another structural diagram of the automatic detection device for the manual control station in the main control room of a nuclear power plant provided by the present invention;

[0026] Figure 4 Another structural diagram of the automatic detection device for the manual control station in the main control room of a nuclear power plant provided by the present invention;

[0027] Figure 5 A structural diagram of the wiring rack for the automatic detection device of the manual control station in the main control room of a nuclear power plant provided by the present invention;

[0028] Figure 6 The flowchart illustrates the automatic detection method for the manual control station in the main control room of a nuclear power plant provided by this invention.

Detailed Implementation Methods

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] Please see Figure 1 The present invention provides an automatic testing device 100 for a manual control station in the main control room of a nuclear power plant, including a host computer 10, an NI virtual test instrument 20, several analog signal boards 30, and several manual control stations 40 to be tested in conjunction with the several analog signal boards.

[0031] The host computer 10 inputs the input voltage into the analog signal board 30 via the NI virtual test instrument 20; the input voltage is input into the analog signal board 30 and output from the analog signal board 30 to the manual station under test 40, where the manual station under test 40 displays the voltage display value; the host computer 10 acquires the theoretical voltage value output by the analog signal board 30 via the NI virtual test instrument 20; the host computer 10 records the input voltage, the voltage display value, and the theoretical voltage value, and obtains the deviation value between the voltage display value and the theoretical voltage value to achieve automatic detection of the manual station under test.

[0032] Understandably, by outputting voltage to the NI virtual test instrument 20 via the host computer 10, the input signal (i.e., input voltage) to the analog signal input board 30 is provided. The analog signal input board 30 inputs the input signal to the manual station under test 40, which displays the voltage value. The host computer 10 also acquires the output signal (i.e., the theoretical voltage value) of the analog signal input board 30. The host computer 10 can record the input voltage, the voltage display value, and the theoretical voltage value, and obtain the deviation value between the voltage display value and the theoretical voltage value. The input voltage, the voltage display value, the theoretical voltage value, and the deviation value can all be displayed in real time on the display interface of the host computer 10. By monitoring the deviation value, the correctness of the data of the manual station under test 40 during the test or burn-in process can be determined, thereby realizing the automatic detection of the manual station under test 40.

[0033] Therefore, the automatic detection device 100 for the manual control station in the main control room of a nuclear power plant provided by the present invention allows the host computer 10 to input the input voltage into the analog signal board 30 via the NI virtual test instrument 20. The analog signal board 30 provides the input signal to the manual control station 40 under test, which displays the voltage value. The host computer 10 collects the theoretical voltage value output by the analog signal board 30 via the NI virtual test instrument 20. The host computer 10 can record the input voltage, the voltage display value, and the theoretical voltage value, and obtain the deviation between the voltage display value and the theoretical voltage value. To achieve automatic detection of the manual control station under test, it can automatically test and burn-in new spare parts, identify various defects in spare parts in advance, and avoid affecting the safe operation of the unit. The data entered by the host computer is the basis for analyzing the root cause of the manual control station failure in the main control room, which can quickly locate the fault point, facilitate maintenance personnel to formulate accurate maintenance technical solutions and equipment management solutions, and improve the overall reliability of the equipment and the economy of maintenance. In addition, during the automatic detection process, it can realize the operation and maintenance skills training functions of the manual control station, and quickly and effectively improve the skill level of maintenance personnel.

[0034] Please refer to the following: Figures 2 to 4The automatic detection device 100 of the manual control station in the main control room of the nuclear power plant also includes a cabinet 50. The cabinet 50 is rectangular and includes a top wall 51, a bottom wall 52, and multiple side walls 53 connecting the top wall 51 and the bottom wall 52. The top wall 51, the bottom wall 52, and the multiple side walls 53 enclose a receiving space 501, in which several analog signal cards 30 are received. Specifically, there are four side walls 53, which are arranged in pairs. One pair of opposite side walls serves as the front door and the rear door, respectively. The front door is designed to open when inserting or removing control cards (analog signal cards 30), and the rear door is designed to open when wiring, assembling, or maintaining the internal schematic area of ​​the cabinet 50. Both the front and rear doors are side-opening doors with an opening angle greater than 90 degrees and are locked.

[0035] Specifically, the housing space 501 is divided into three board enclosures 54. The board enclosures 54 are fixed to the cabinet 50 with screws via flanges. Each board enclosure 54 has a bracket 541 installed at its bottom to ensure the structural stability of the board enclosure 54. The analog signal boards 30 are divided into two layers and fixed inside the board enclosures 54. The installation method of the analog signal boards 30 inside the board enclosures 54 is the same as in the field, and the signal port conversion is completed through the socket (i.e., the wiring port) to form a data interaction with various manual operation stations.

[0036] Furthermore, the analog signal board 30 includes the ME board and the RG board. The ME board, also known as the YKC-FE7F91 system name memory board, internally consists of a counter and multiple RS flip-flops. Its output is an analog amplifier, primarily converting externally input 1-5V DC voltage signals into current signal outputs. This mode is called automatic mode in the system. When the internal counter counts and converts the count result into an analog output, this mode is called manual mode in the system. The RG board, also known as the YKC-FE7A41 system name PI regulator board, internally consists mainly of a differential amplifier and an integrating circuit. It primarily sets a threshold value. When another signal is higher or lower than the threshold value, the integrating circuit begins integration (PI regulation) until the two signals are equal, at which point integration ends.

[0037] The NI Virtual Test Instrument 20 is fixed to one of the side walls 53 connected to the front or rear door and located near the rear door. Specifically, the NI Virtual Test Instrument 20 is fixed to the side wall 53 with screws. The NI Virtual Test Instrument 20 is used to send voltage signals to the input terminal of the analog signal board and simultaneously collect the output voltage signals of the analog signal board and send them to the host computer for processing.

[0038] The automatic detection device 100 of the manual control station in the nuclear power plant's main control room also includes a power supply. The power supply is fixed to the side wall 53 opposite to the NI virtual test instrument 20, and located near the rear door. The power supply is 220VAC, which can directly power the host computer 10 and the NI virtual test instrument 20. Specifically, a power cord drum is installed on the side wall 53 where the power supply is located. The power cord drum is placed below the analog circuit board 30, with the plug extending from the side wall 53. The power cord drum is a retractable type, providing the 220VAC power supply port for the automatic detection device to connect to the host computer 10 for operation. Considering the heat dissipation problem of the power supply when the automatic detection device is under full load, the power supply is designed to be installed on the side of the cabinet 50, with the metal casing directly fixed to the metal plate on the side of the cabinet 50. This increases the heat dissipation area and ensures the stability of the power supply operation. Furthermore, no components are installed on top of the power supply, preventing uncontrollable temperature effects caused by upward heat dissipation.

[0039] The cabinet 50 also houses multiple circuit boards, which are used to electrically connect the NI Virtual Test Instrument 20 to the analog signal board 30, and the analog signal board 30 to the manual test station 40. Specifically, each board chassis 54 corresponds to a chassis backplane (i.e., circuit board), which is installed in the lower space of the cabinet 50. The advantage of using a backplane is that it can replace physical wiring, interconnecting the manual test station 40, analog signal board 30, and NI Virtual Test Instrument 20. Considering the removability of components, a backplane design is incorporated for each independent chassis. The backplane is equipped with terminal blocks and high-speed data cables, which are used for data exchange between different chassis. Understandably, the hardware design fully considers multiple aspects such as load capacity, installation space, acquisition and response speed. Independent physical channels are uniformly allocated to the monitoring channels of the analog signal boards to ensure real-time data response. Furthermore, it can detect potential flash faults and record them in the subsequent information processing unit of the host computer.

[0040] The circuit board also includes a conversion circuit to convert 220VAC to 24VDC. Specifically, the DC power supply consists of an AC-DC 200W converter (the conversion circuit) and a 24VDC switching power supply. The AC input side is connected to the power supply unit, and the 24VDC output side is connected to the power supply terminal of the analog signal board backplane, providing power to the ME board, RG board, and various types of handheld stations. To reduce the impact on the power supply, the platform is designed with a two-stage switch. When 220VAC is connected, the analog signal board automatically powers on, while the handheld station under test does not. Only when the two-stage switch is turned to "ON" does the handheld station under test power on and receive signals from the analog signal board, thus avoiding the impact on the power supply caused by excessive starting current when powered on simultaneously.

[0041] Furthermore, during cabinet cabling, power and signal lines are separated using different physical spaces to avoid power supply noise coupling to signals. Simultaneously, power input to the analog input boards is protected by fuses to prevent short circuits caused by improper operation. Each board's power input also features two stages of filter capacitors to filter out high-frequency and low-frequency noise from the power supply. Through this circuit and actual cabling design, the DC power input to the analog input boards is ensured to be stable, with low ripple and low noise, improving the accuracy of test data.

[0042] A drawer 511 is located near the top wall 51 of the cabinet 50. The host computer 10 is housed within the drawer 511 and is connected to the NI Virtual Test Instrument 20 via a network cable. The host computer 10 can record the input voltage, the displayed voltage value, and the theoretical voltage value, and obtain the deviation between the displayed voltage value and the theoretical voltage value to achieve automatic detection of the manual station under test. Specifically, the host computer 10 is a laptop computer. The network cable connecting to the NI Virtual Test Instrument is placed in the drawer 511. During testing, a dedicated laptop computer can be placed in this drawer, with the height of the laptop conforming to ergonomic design. In this embodiment, a tool drawer, a 19-inch 1U cabinet drawer, is also provided below the drawer 511 to store tools and cables used during testing.

[0043] The bottom wall 52 of the cabinet 50 is equipped with four 2.5-inch casters, each with a load capacity of 500kg. These casters are positioned at the four corners of the bottom wall 52, with the two casters closest to the front door having brakes to ensure the safety and stability of the testing equipment. In this embodiment, a file basket 531 protrudes from the exterior of the side wall 53 of the cabinet 50 for convenient placement and collection of files during testing operations. Understandably, the main frame and load-bearing components of the cabinet 50 are made of 2mm thick sheet metal, while the remaining structural parts are made of 1mm thick sheet metal. Reinforcing ribs can be added to load-bearing and weak points to ensure the overall stability and safety of the frame.

[0044] Furthermore, a vertical plate 55 is fixed on the top wall 51, and one end of the vertical plate 55 is connected to a mounting slope 56. The mounting slope 56 has several mounting holes 561, into which the manual operating station 40 to be tested is inserted. Specifically, the mounting slope 56 is divided into upper and lower mounting layers. The first layer can install nine manual operating stations to be tested, and the second layer can install six manual operating stations to be tested. Mounting holes 561 are provided at corresponding positions according to the manual operating stations to be tested. The mounting holes 561 are rectangular holes with a size of 36*138mm. The rectangular holes are perpendicular to the slope plane to ensure that the manual operating stations to be tested are firmly inserted after insertion.

[0045] Please see Figure 5A cable tray 57 is connected between the mounting ramp 56 and the upright plate 55. The cable tray 57 is used to fix the cable connected to the manual operating station 40 under test. Specifically, a cable tray 57 is installed at the rear of both mounting holes 561. The cable tray 57 is made of aluminum alloy and includes a fixed base 571 and multiple slot walls 572. The fixed base 571 is fixed to the upright plate 55. The fixed base 571 and the slot walls 572, as well as adjacent slot walls 572, are connected by damping shafts to ensure that the slot arm 572 can be suspended at any position on the movement trajectory. The slot wall 572 has grooves, and the cable is fixed in the grooves. Understandably, the cable tray 57 is mounted on the platform frame (i.e., the upright plate 55) via a fixed base 571. The frame has cable exit holes corresponding to the bases. Internal cables pass through the holes in the fixed base 571, run along the grooves inside the slot arm 572, and finally extend from the tail end to connect to the socket connected to the plug of the manual operating station 10 under test. When the manual operating station 10 under test needs to be installed, the cable tray 57 is pulled outwards to connect its socket to the manual operating station 10, and then the manual operating station 10 under test is pushed into the mounting hole 561, ensuring that all testing operations are performed on the front of the platform. In this embodiment, a power switch and a power socket are also provided on the upright plate 55 near the cabinet 50 to enable power connection and disconnection.

[0046] In this embodiment, the first-layer mounting ramp can simultaneously perform burn-in and testing on a total of 9 L11 / L12 / L61 / L62 manual operating stations, while the second-layer mounting ramp can simultaneously perform burn-in and testing on a total of 6 M32 manual operating stations. Specifically, there are 8 types of manual operating devices that are compatible with the ME board: YKC-FE7L11, YKC-FE7L11-D, YKC-FE7L12, YKC-FE7L12-D, YKC-FE7L61, YKC-FE7L61-D, YKC-FE7L62, and YKC-FE7L62-D. There are 2 types of manual operating devices that are compatible with the RG board: YKC-FE7M32 and YKC-FE7M32-D.

[0047] The functions of each type of manual control station are described below:

[0048] (1) The YKC-FE7L11 system is named the forward incremental control station. It is designed with a moving coil meter architecture and mainly consists of a pointer, magnetic core, coil and a small number of control components. It is used in conjunction with ME and is a remote display instrument. It can display the output signal of ME board in the form of pointer scale. At the same time, the instrument has operation buttons and can realize automatic and manual mode switching. In manual mode, it can control the counter of ME board to increase or decrease the count, thereby further achieving the purpose of controlling the output signal. The display direction is positive.

[0049] (2) The YKC-FE7L11-D system is called a digital positive incremental control station. Its internal acquisition is mainly composed of analog circuits, while the display and control parts are composed of digital circuits. Its functions are the same as those of the YKC-FE7L11 in the form of a moving coil meter, and the connection method is also the same. The biggest difference is that the digital positive incremental control station has high accuracy and high reliability, and the display method is positive.

[0050] (3) The system name of YKC-FE7L12 is reverse incremental control station. Its overall architecture and composition are similar to those of the moving coil table FE7L11. The only difference is that the display direction of YKC-FE7L12 is reversed.

[0051] (4) The YKC-FE7L12-D system is called Digital Reverse Incremental Control Station. Its overall architecture and composition are basically the same as those of YKC-FE7L11-D. The only difference is that the display direction is reversed.

[0052] (5) YKC-FE7L61 System Name: Forward Manual Loading Station. The overall architecture is a moving coil meter design, mainly composed of pointer, magnetic core, coil and a small number of external components. It is used in conjunction with the ME board and is a remote display instrument. It can display the output signal of the ME board in the form of pointer scale. At the same time, the instrument has operation buttons, which can realize the addition and subtraction of the counter of the ME board, thereby further controlling the output signal. The display direction is forward.

[0053] (6) YKC-FE7L61-D System Name: Digital Forward Manual Loading Station. The internal acquisition is mainly composed of analog circuits, while the display and control parts are composed of digital circuits. Its functions are the same as those of the YKC-FE7L61 moving coil meter, and the connection method is also the same. The biggest difference is that the digital forward manual loading station has high accuracy and high reliability, and the display direction is forward.

[0054] (7) KC-FE7L62 system name reverse manual loading station, the overall architecture and composition are similar to the moving coil table FE7L62, the only difference is in the display, YKC-FE7L62 displays in the reverse direction.

[0055] (8) The YKC-FE7L62-D system name is digital reverse manual loading station. Its overall architecture and composition are basically the same as YKC-FE7L61-D. The only difference is that the display direction is reversed.

[0056] (9) YKC-FE7M32 System Name Internal and External Setpoint Control Station. The overall architecture belongs to the moving coil meter design. It is mainly composed of pointer, magnetic core, coil and a small number of external components. It is used in conjunction with RG board and is a remote display instrument. It can display the output signal of RG board in the form of pointer scale. At the same time, the instrument has a threshold setting output, which can output a set of internal setting signals to RG. The instrument has operation buttons, which can realize the adjustment of the internal setpoint of RG board, thereby further controlling PI adjustment. The display direction is positive.

[0057] (10) YKC-FE7M32-D System Name: Digital Internal and External Setpoint Control Station. The internal acquisition is mainly composed of analog circuits, while the display and control parts are composed of digital circuits. Its functions are the same as those of the YKC-FE7M32 in the form of a moving coil meter, and the connection method is also the same. The biggest difference is that the digital forward manual loading station has high accuracy and high reliability, and the display direction is forward.

[0058] Furthermore, the top wall 51 of the cabinet 50 is provided with multiple partitions 58 at the connection between it and the upright plate 55. The multiple partitions 58 are divided into a receiving space for accommodating long test stations of type 7N61 / 7N62. Specifically, the front end of the top wall 51 is a horizontal platform, and the rear end is formed by the partitions 58 to form a piano key-style fence structure. After the long meter is wired, it can be placed in the fence structure, which has a fixing function.

[0059] The 7N61 / 7N62 manual control station includes models YKC-FE7N61, YKC-FE7N61-D, YKC-FE7N62, and YKC-FE7N62-D, and their functions are described below:

[0060] (1) The YKC-FE7N61 system is a manual operation station, internally composed of a YKC-FE7K61 dual-speed manual loading unit and a YKC-FE1G81 voltage display plug-in. The circuit is mainly composed of digital circuits. The YKC-FE7K61 contains a dual-speed counter, and the counting speed of the counter can be changed by controlling the buttons. After counting, it is converted into an analog voltage quantity for output, thereby controlling the voltage output speed. The YKC-FE1G81 mainly consists of analog circuits and a moving-coil meter, used to indicate the measured voltage quantity. The two boards are combined and installed in one module unit, and the combined model is called YKC-FE7N61. The display direction is positive.

[0061] (2) The YKC-FE7N61-D system is named Digital Manual Operation Station. The circuit design is composed of digital and analog circuits with digital display. The composition method is the same as YKC-FE7N61, and the structure and interface are also the same. The difference is that it has high precision and high reliability.

[0062] (3) The YKC-FE7N62 system is a remote control station. Internally, it consists of a YKC-FE7K62 reverse dual-speed manual loading unit and a YKC-FE1G82 reverse voltage display plug-in. The circuit is mainly composed of digital circuits. The YKC-FE7K62 contains a dual-speed counter, whose counting speed can be changed via control buttons. After counting, the voltage is converted into an analog voltage value for output, thus controlling the voltage output speed. The YKC-FE1G82 mainly consists of analog circuits and a moving-coil meter, used to indicate the measured voltage value. The two boards are combined and installed in one module unit; the combined model is called YKC-FE7N62, and the display direction is reversed.

[0063] (4) The YKC-FE7N62-D system is named Digital Manual Operation Station. The circuit design uses digital and analog circuits. It features digital display and is composed of the same components as YKC-FE7N62. The structure and interface are also the same. The difference is that it has higher precision and higher reliability.

[0064] Therefore, the automatic testing device 100 for manual control stations in the main control room of a nuclear power plant provided by this invention can automatically test and burn-in 14 types of manual controllers. Among them, there are 8 different models of manual controllers that can be paired with ME boards. The design fully considers universal compatibility, ensuring mixed installation or free combination of manual controllers; that is, it can simultaneously measure different models of digital instruments and moving-coil instruments. Considering the platform's footprint and operator habits, the capacity for ME boards is set to 9 units, the capacity for RG boards to 6 units, and the capacity for 7N61 and 7N62 instruments to 4 units. In other words, this platform can support simultaneous testing and burn-in of up to 19 manual control stations of 14 types.

[0065] The actual indication signals of the manual control station are provided by the analog signal board. Based on the actual connection relationships on site, the input signals of L11 / L12 / L61 / L62 manual control stations are provided by the ME board, the input signals of M32 manual control stations are provided by the RG board, and the input signals of 7N61 / 7N62 manual control stations can be provided by the internal loop, forming a self-test. The number of boards is related to the manual control station under test; each manual control station is paired with one board. Voltage output and acquisition control are performed on the NI virtual instrument via a host computer's laptop workstation to achieve the input and output signal acquisition of the analog signal board. The input and acquired signals are displayed in real time on the test platform software interface. The operator needs to compare the acquired values ​​with the values ​​displayed on the manual control station to monitor the correctness of the data during the manual control station test or burn-in process.

[0066] Furthermore, the host computer's display interface can display multiple functions such as board test status, real-time measurement point information, curve display, data playback, and report printing, and performs some graphic processing to intuitively display the relevant board test data. Specifically, the 9 L11 / L12 / L61 / L62 test areas, 6 M32 test areas, and 4 7N61 / 7N62 test areas can independently collect, store, and display data, and independently control parameters. The background automatically calculates the deviation values ​​of each group of boards. The software controls the start and stop of the test program through the "Start Test" and "Stop Test" buttons, and controls whether the test data is stored through the "Start Recording" and "Stop Recording" buttons. In the real-time measurement point information display interface, detailed curve information of the test channel can be displayed for each group. The data is synchronized with the real-time measurement point information display interface after a cumulative half hour. The board switching tab can be used to freely switch between boards to view the recent data status of different boards. The data playback display interface allows for the separate display of historical data from board tests. Users can freely use the cursor to view detailed data at each moment. It supports functions such as scaling, panning, independent display, and customizing colors and styles for curves. The "Print Report" button in the data playback interface allows users to print reports in Word format. Data report files are uniformly stored in the "Reports" folder in the root directory, named with the numerical format "Date_Time". The default data sampling rate is 1Hz, with a sampling accuracy greater than 0.5%, and real-time updates. During data storage and acquisition synchronization, the file format is TDMS, supporting opening and modification in Excel. Data storage files are named with "Date_Time". A new file is created after each storage session or after 24 hours of continuous storage, and all files are uniformly stored in the "Data" folder in the root directory.

[0067] Please see Figure 6 This is a flowchart of the automatic detection method for the manual control station in the main control room of a nuclear power plant provided by the present invention. It should be noted that the method of the present invention is not limited to the order of the following steps, and in other embodiments, the method of the present invention may include only a portion of the following steps, or some steps may be deleted.

[0068] The automatic detection method for the manual control station in the main control room of a nuclear power plant provided by this invention is applied to the automatic detection device for the manual control station in the main control room of a nuclear power plant of this invention. The automatic detection method includes the following steps:

[0069] Step S10: The host computer inputs the input voltage into the analog circuit board via the NI virtual test instrument.

[0070] Step S20: The input voltage is input to the analog signal board and output by the analog signal board to the manual station under test, and the manual station under test displays the voltage value.

[0071] Step S30: The host computer acquires the theoretical voltage value output by the analog circuit board through the NI virtual test instrument.

[0072] Step S40: The host computer records the input voltage, the voltage display value, and the theoretical voltage value, and obtains the deviation value between the voltage display value and the theoretical voltage value to realize the automatic detection of the manual station under test.

[0073] It should be noted that all embodiments of the automatic detection device for the manual control station of the nuclear power plant main control room provided by the present invention are applicable to the automatic detection method for the manual control station of the nuclear power plant main control room provided by the present invention, and all can achieve the same or similar beneficial effects.

[0074] In summary, the automatic detection device and method for the manual control station in the main control room of a nuclear power plant provided by this invention allows the host computer 10 to input the input voltage into the analog signal board 30 via the NI virtual test instrument 20. The analog signal board 30 provides the input signal to the manual control station 40 under test, which displays the voltage value. The host computer 10 acquires the theoretical voltage value output by the analog signal board 30 via the NI virtual test instrument 20. The host computer 10 can record the input voltage, the displayed voltage value, and the theoretical voltage value, and obtain the deviation between the displayed voltage value and the theoretical voltage value. To achieve automatic detection of the manual control station under test, it can automatically test and burn-in new spare parts, identify various defects in spare parts in advance, and avoid affecting the safe operation of the unit. The data entered by the host computer is the basis for analyzing the root cause of the manual control station failure in the main control room, which can quickly locate the fault point, facilitate maintenance personnel to formulate accurate maintenance technical solutions and equipment management solutions, and improve the overall reliability of the equipment and the economy of maintenance. In addition, during the automatic detection process, it can realize the operation and maintenance skills training functions of the manual control station, and quickly and effectively improve the skill level of maintenance personnel.

[0075] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An automatic detection device for a manual control station in a main control room of a nuclear power plant, characterized in that, The application relates to a kind of automatic detection method of nuclear power station main control room hand-operated station, which is applied to the automatic detection device of nuclear power station main control room hand-operated station in any one of claims 1-9, and the automatic detection method comprises the following steps: The host computer records the input voltage, the voltage display value and the voltage theoretical value, and obtains the deviation value of the voltage display value and the voltage theoretical value, so as to realize the automatic detection of the hand-operated station to be tested.

2. The automatic detection device for a manual station of a main control room of a nuclear power plant according to claim 1, characterized by, The application further relates to a kind of cabinet, which comprises a top wall, a bottom wall and a plurality of side walls connected to the top wall and the bottom wall, the top wall, the bottom wall and the plurality of side walls form a receiving space, and the plurality of analog quantity board cards are received in the receiving space.

3. The automatic detection device for a manual station of a main control room of a nuclear power plant according to claim 2, characterized in that, The top wall is fixed with a vertical plate, one end of the vertical plate is connected with a mounting inclined surface, the mounting inclined surface is provided with a plurality of mounting holes, and the hand-operated station to be tested is inserted into the mounting holes.

4. The automatic detection device for a manual station of a main control room of a nuclear power plant according to claim 3, characterized in that, A wiring rack is connected between the mounting inclined surface and the vertical plate, and the wiring rack is used for fixing the wiring connected to the hand-operated station to be tested.

5. The automatic detection device for a manual station of a main control room of a nuclear power plant according to claim 4, characterized in that, The wiring rack comprises a fixed base and a plurality of groove walls, the fixed base is fixed on the vertical plate, the fixed base and the groove walls and the adjacent groove walls are connected by damping shafts, the groove walls are provided with grooves, and the wiring is fixed in the grooves.

6. The automatic detection device for a manual station of a main control room of a nuclear power plant according to claim 3, characterized by The NI virtual test instrument is fixed on one of the side walls.

7. The automatic detection device for a manual station of a main control room of a nuclear power plant according to claim 6, characterized in that, Further comprising a power supply, the power supply is fixed on the side wall opposite to the position of the NI virtual test instrument.

8. The automatic detection device for a manual station of a main control room of a nuclear power plant according to claim 2, characterized by, The cabinet is provided with a drawer near the top wall, the host computer is received in the drawer, and the host computer is connected with the NI virtual test instrument through a network cable.

9. The automatic detection device for a manual station of a main control room of a nuclear power plant according to claim 2, characterized by, A plurality of circuit boards are further fixed in the cabinet, the circuit boards are used for realizing electrical connection between the NI virtual test instrument and the analog quantity board cards, and between the analog quantity board cards and the hand-operated station to be tested, a conversion circuit is arranged on the circuit board, 220V AC is converted into 24V DC, 24V DC is output, and the power supply end of the analog quantity board card back plate is connected, so as to provide power supply for the ME board card, the RG board card and various types of hand-operated stations.

10. An automatic detection method of a nuclear power station main control room hand-operated station, which is applied to the automatic detection device of the nuclear power station main control room hand-operated station in any one of claims 1-9, and the automatic detection method comprises the following steps: The host computer records the input voltage, the voltage display value and the voltage theoretical value, and obtains the deviation value of the voltage display value and the voltage theoretical value, so as to realize the automatic detection of the hand-operated station to be tested. The input voltage is input into the analog quantity board card and output to the hand-operated station to be tested by the analog quantity board card, and the hand-operated station to be tested displays a voltage display value. The host computer collects the voltage theoretical value output by the analog quantity board through the NI virtual test instrument; The host computer records the input voltage, the voltage display value and the voltage theoretical value, and obtains the deviation value of the voltage display value and the voltage theoretical value to realize automatic detection of the hand-operated station to be tested.

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