A function detection device and method for a nuclear power plant rod control rod position system component

Abstract

The application discloses a kind of nuclear power plant rod control rod position system component function detection equipment and method, it is related to nuclear power technology field, and its technical solution key points are: the function detection equipment includes test equipment and electronic equipment, the electronic equipment is used to send the test instruction corresponding to test item to the PLC component, the PCL component receives the test instruction, and is used to send the digital signal and analog signal required for function test to the first cabinet and second cabinet according to the test instruction, the function of each component in the first cabinet and second cabinet is tested, obtains the test signal of function test, and sends the test signal to the electronic equipment, and the electronic equipment shows the function detection result of the test rod control rod position system component according to the test signal.The application realizes the automatic detection of all components in rod control rod position system, and improves the detection efficiency of function test.

Description

Technical Field

[0001] This invention relates to the field of nuclear power technology, and more specifically, to a functional testing device and method for components of a nuclear power plant rod control rod position system. Background Technology

[0002] With the increasing application of nuclear energy, the safety of nuclear power plant operation has received more attention. During the operation of a nuclear power plant, the adjustment and measurement of the control rod positions in the reactor are achieved by the rod control and position system. The main equipment of the rod control and position system consists of multiple component modules, including power supply components (LC, MC, SC); control power supply components; DC power supply components; control drive components (LC, MC, SC); and rod position measurement components.

[0003] During production and maintenance, to ensure that the performance of each component in the rod control and positioning system meets design requirements, common component testing methods include having testing personnel observe the components' working status while the system is running, and using testing tools to test each component individually. However, both of these methods are inefficient, and because the components are powered by high-voltage electricity, the testing process also presents certain safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide a functional testing device and method for components of a nuclear power plant rod control and positioning system, which enables automated testing of all components in the rod control and positioning system and improves the testing efficiency of functional tests.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] In a first aspect, the present invention provides a functional testing device for components of a nuclear power plant rod control and position system, applied to the rod control and position system, wherein the rod control and position system includes a power supply component, a control power supply component, a DC power supply component, a control drive component, and a rod position measurement component, and the functional testing device includes a testing device and an electronic device;

[0007] The testing equipment includes a PLC component, a first chassis, and a second chassis; wherein, the first chassis is used for functional testing of the power supply component, the control power supply component, and the DC power supply component; and the second chassis is used for functional testing of the control drive component and the rod position measurement component.

[0008] The electronic device is used to send test instructions corresponding to the test items to the PLC component. When the PLC component receives the test instructions, it is used to send digital and analog signals required for functional testing to the first and second chassis according to the test instructions, to test the functions of each component in the first and second chassis, to obtain the functional test test signals, and to send the test signals to the electronic device. The electronic device displays the functional test results of the probe control rod position system component according to the test signals.

[0009] In one implementation, the first chassis includes a power supply slot, a control power supply slot, and a first DC power supply slot. The power supply slot is used to install a power supply assembly, the control power supply slot is used to install a control power supply assembly, and the first DC power supply slot is used to install a DC power supply assembly.

[0010] In one implementation, the first chassis further includes a conditioning module for measuring the pin impedance of the power supply assembly, control power supply assembly, and DC power supply assembly installed in the first chassis, and for monitoring the power supply voltage of the first chassis.

[0011] In one implementation, the second chassis includes a control drive slot, a rod position slot, and a second DC power supply slot. The control drive slot is used to install a control drive assembly, the rod position slot is used to install a rod position measurement assembly, and the second DC power supply slot is used to install a DC power supply assembly.

[0012] In one implementation, the second chassis further includes an MCU controller, which is used to measure the pin impedance of the drive control component and the rod position measurement component installed in the second chassis when they are not powered on, and to calibrate the digital and analog signals sent by the PLC component.

[0013] In one implementation, the test equipment further includes a load component for supplying power to the first and second chassis. The load component includes a 380Vac voltage input, a 220Vac voltage input, a 220Vac voltage output, a 260Vac voltage output, a load interface, and a monitoring signal interface. The 260Vac voltage output is obtained by transforming the 380Vac voltage input through a three-phase transformer, and the 220Vac voltage output is obtained by filtering the 380Vac voltage input through a single-phase input filter.

[0014] In one implementation, the electronic device and the PLC component communicate via a switch, and the test signal is transmitted to the electronic device via the switch after being converted from CAN bus to Ethernet.

[0015] A second aspect of the present invention provides a method for functional testing of components in a nuclear power plant rod control and position system, applied to a functional testing device for components in a nuclear power plant rod control and position system provided in the first aspect of the present invention. The functional testing device includes testing equipment and electronic equipment; the testing equipment includes a PLC component, a first chassis, and a second chassis; wherein the first chassis is used for functional testing of a power supply component, a control power supply component, and a DC power supply component; the second chassis is used for functional testing of a control drive component and a rod position measurement component. The method includes:

[0016] The electronic device sends test commands to the PLC component. When the PLC component receives the test commands, it sends digital and analog signals required for functional testing to the first and second chassis according to the test commands. It tests the functions of each component in the first and second chassis, obtains the functional test test signals, and sends the test signals to the electronic device. The electronic device displays the functional test results of the probe control rod position system component according to the test signals.

[0017] In one implementation, the first chassis further includes a conditioning module for measuring the pin impedance of the power supply assembly, control power supply assembly, and DC power supply assembly installed in the first chassis, and for monitoring the power supply voltage of the first chassis.

[0018] In one implementation, the second chassis further includes an MCU controller, which measures the pin impedance of the drive control component and the rod position measurement component installed in the second chassis when they are not powered on, and calibrates the digital and analog signals sent by the PLC component.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention provides a functional testing device for components of a nuclear power plant rod control and positioning system. The testing device includes a testing unit and electronic equipment. The testing unit comprises a PLC component, a first chassis, and a second chassis. The electronic equipment sends commands to the PLC component via Ethernet communication. The PLC component provides the required digital and analog signals to the first and second chassis for testing. This automatically tests the functions of each component and obtains the test signals generated during the testing process. The electronic equipment analyzes the test signals to detect the operating status of the rod control and positioning system components, thereby achieving functional testing of each component. The device features convenient testing, safe testing, and automatic calibration of the functional testing equipment. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This invention provides a schematic diagram of the structure of a functional testing device for a nuclear power plant rod control rod position system component, according to an embodiment of the present invention.

[0023] Figure 2 A schematic diagram of the structure of the second chassis provided in an embodiment of the present invention is shown;

[0024] Figure 3 A functional structure diagram of the conditioning plug-in provided in an embodiment of the present invention is shown;

[0025] Figure 4 A schematic diagram illustrating the principle of measuring the impedance of a component under test using a conditioning plug-in provided in an embodiment of the present invention is shown.

[0026] Figure 5 A schematic diagram of the 220Vac and 260Vac voltage outputs of the load component provided in an embodiment of the present invention is shown;

[0027] Figure 6 This invention provides a functional schematic diagram of a nuclear power plant rod control rod position system component functional testing equipment according to an embodiment of the present invention.

[0028] Figure 7 A schematic diagram of the test interface of the power supply component provided in the embodiment of the present invention in the human-machine interface unit of an electronic device is shown.

[0029] Figure 8 A schematic diagram of the test interface of the control power supply component provided in the human-machine interface unit of an electronic device according to an embodiment of the present invention is shown.

[0030] Figure 9 A schematic diagram of the test interface of the DC power supply component provided in the embodiment of the present invention in the human-machine interface unit of an electronic device is shown.

[0031] Figure 10 A schematic diagram of the test interface of the control and drive component provided in the embodiment of the present invention in the human-machine interaction unit of an electronic device is shown.

[0032] Figure 11 The diagram shows a test interface of the rod position measurement component provided in an embodiment of the present invention in the human-machine interface unit of an electronic device. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0034] It should be noted that the terms "comprising" or "may include" used in the various embodiments of this application indicate the presence of the claimed function, operation, or element, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in the various embodiments of this application, the terms "comprising," "having," and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or adding one or more combinations of the foregoing.

[0035] In various embodiments of this application, the expression "or" or "at least one of B and / or C" includes any combination or all combinations of the words listed simultaneously. For example, the expression "B or C" or "at least one of B and / or C" may include B, may include C, or may include both B and C.

[0036] It should be understood that terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] Please refer to Figure 1 and Figure 6 This embodiment provides a functional testing device for components of a nuclear power plant rod control and position system. The device is applied to the rod control and position system, which includes a power supply component, a control power supply component, a DC power supply component, a control drive component, and a rod position measurement component. The functional testing device includes testing equipment and electronic equipment.

[0038] The testing equipment includes a PLC component, a first chassis, and a second chassis; wherein, the first chassis is used for functional testing of the power supply component, the control power supply component, and the DC power supply component; and the second chassis is used for functional testing of the control drive component and the rod position measurement component.

[0039] The electronic device is used to send test instructions corresponding to the test items to the PLC component. When the PLC component receives the test instructions, it is used to send digital and analog signals required for functional testing to the first and second chassis according to the test instructions, to test the functions of each component in the first and second chassis, to obtain the functional test test signals, and to send the test signals to the electronic device. The electronic device displays the functional test results of the probe control rod position system component according to the test signals.

[0040] Specifically, the power supply assembly includes two models: LC / MC and SC. The difference between these two models lies in the output current, which is tailored to the control scenarios of the control rod. It is understood that the control scenarios of the control rod are well-known to those skilled in the art; therefore, this embodiment will not provide specific details. It should be noted that the connection methods, power supply methods, and operating methods between the power supply assembly, control power supply assembly, DC power supply assembly, control drive assembly, and rod position measurement assembly are well-known to those skilled in the art; therefore, this embodiment will not provide further explanation.

[0041] Since the PLC component needs to send digital and analog signals required for functional testing to the first and second chassis when it receives test commands, the PLC component includes a CPU, digital input module IB, digital output module OB, analog input module IF, and analog output module OF. The CPU has PLC main control software installed, which can acquire analog and digital signals from the component under test, transmit the acquired signals to the electronic equipment via Ethernet, and receive test control commands from the electronic equipment via Ethernet. Based on the control commands, it outputs corresponding digital or analog signals to the component under test. The model numbers of the various components of the PLC component are shown in Table 1 below.

[0042] Table 1 PLC Component Models

[0043] Serial Number name model 1 PLC framework 1756-A10 2 Power module 1756-PB50 3 CPU module 1756-L72 4 Communication module 1756-EN2T 5 Numeric input module 1756-IB32 6 Digital output module 1756-OB32 7 Analog input module 1756-IF16 8 Analog output module 1756-OF8 9 Hollow slot cover plate 1756-N2

[0044] The first chassis is used to measure the power supply component, the control power supply component, and the DC power supply component. As one embodiment, the first chassis includes a power supply slot, a control power supply slot, and a first DC power supply slot. The power supply slot is used to install the power supply component, the control power supply slot is used to install the control power supply component, and the first DC power supply slot is used to install the DC power supply component.

[0045] Specifically, the power supply slot can connect to both the LC / MC and SC power supplies. The power and control power supplies can be connected to the bottom of the first chassis via connectors, which are fixed to the back of the first chassis. The DC power supply connects to the components and to the bottom of the chassis via the back panel of the first chassis. A connector is located on the rear panel of the first chassis for transmitting all signals within the first chassis.

[0046] like Figure 2 As shown, the second chassis mainly implements the measurement of the control drive component and the rod position measurement component. The DC power supply component is directly fixed in the chassis and is used to power the board under test. The MCU controller in the second chassis is mainly used to realize the self-calibration function of the testing equipment. The second chassis is equipped with a display screen, a rotary button, and three pairs of test points. The three pairs of test points are used for DAC calibration, ADC calibration, and impedance measurement calibration, respectively. By measuring the MCU controller in the second chassis, the measurement of the entire second chassis can be realized.

[0047] Due to the different component depths, a chassis partition can be designed in the middle of the second chassis, with two backplates on both sides of the partition for mounting the control drive assembly and the rod position measurement assembly. The two backplates are connected by cables, with the power cable directly connected to the backplates through the rear panel of the second chassis. The output signals of the control drive assembly are output through connectors on the rear panel.

[0048] In one embodiment, the second chassis includes a control drive slot, a rod position slot, and a second DC power supply slot. The control drive slot is used to install a control drive assembly, the rod position slot is used to install a rod position measurement assembly, and the second DC power supply slot is used to install a DC power supply assembly.

[0049] In one embodiment, the second chassis further includes an MCU controller, which is used to measure the pin impedance of the drive control component and the rod position measurement component installed in the second chassis when they are not powered on, and to calibrate the digital and analog signals sent by the PLC component.

[0050] Specifically, such as Figure 3 As shown, the MCU controller can send the monitored information to the PLC component via Ethernet, performing only monitoring without affecting the PLC's logic control. The MCU controller can condition the digital inputs and outputs connected to the PLC; it can perform impedance measurement, monitor the voltage and current status of each power supply group, and display the data on a screen; it can be used to measure the pin impedance of the component under test when it is not powered on, preventing damage to the equipment itself or further damage to the component under test due to pin failure. The principle of impedance measurement is as follows... Figure 4 As shown.

[0051] The MCU controller can monitor the power status inside the measuring chassis in real time and display it on the monitor. If it enters the test state, it can also measure the power of the board and transmit the data to the electronic equipment through the PLC control system.

[0052] The second chassis contains slots for rod position drive components and rod position measurement components. The rod position drive component slot can be connected to three types of drive components: rod position control drive component (LC), rod position control drive component (MC), and rod position control drive component (SC). The DC power supply component is a power supply for completing the rod control drive component test.

[0053] In one embodiment, the first chassis further includes a conditioning module for measuring the pin impedance of the power supply assembly, control power supply assembly, and DC power supply assembly installed in the first chassis, and for monitoring the power supply voltage of the first chassis.

[0054] In this embodiment, the conditioning module performs impedance measurement on the component under test and monitors the power supply voltage in the first chassis. The conditioning module in the first chassis communicates with the second chassis via serial port, and the data monitored by the conditioning module can be transmitted to the display screen of the MCU controller in the second chassis for display.

[0055] In one embodiment, the test equipment further includes a load component for providing power to the first and second chassis. The load component includes a 380Vac voltage input, a 220Vac voltage input, a 220Vac voltage output, a 260Vac voltage output, a load interface, and a monitoring signal interface. The 260Vac voltage output is obtained by transforming the 380Vac voltage input through a three-phase transformer, and the 220Vac voltage output is obtained by filtering the 380Vac voltage input through a single-phase input filter.

[0056] In this embodiment, the load assembly is installed at the bottom of the test equipment, mainly using mounting resistors to simulate the load and install high-voltage related components. The front-end processing sections of the 380V and 220V power supplies are also integrated into the load assembly, and the circuit breaker is installed on the front panel of the load equipment. The front panel of the load equipment is also designed with ventilation holes, and a fan is installed behind the ventilation holes. When the chassis temperature exceeds the preset temperature limit, the fan is activated to cool down the chassis and control the surface temperature rise of the entire load chassis within 20°C.

[0057] The 380Vac power input, 220Vac power input, 220Vac power output, and 260Vac power output interfaces are mounted on the rear panel of the load assembly, using aviation-grade connectors; the load interface employs high-current green terminals; the monitoring signal interface is primarily used for temperature sensor signal transmission and serial communication output. Figure 5As shown, the external power inputs of 380Vac and 220Vac are transformed and filtered to achieve 220V power output and 260V power output, respectively.

[0058] The electronic equipment is equipped with LabVIEW monitoring software, which enables data interaction with the PLC component via Ethernet; it communicates with the rod control drive plug-in and the rod position measurement plug-in via CAN box; it completes data processing for the functional tests of each plug-in and saves the test results.

[0059] For the functional test results of the test project, please refer to... Figure 7 , Figure 8 , Figure 9 , Figure 10 as well as Figure 11 , Figures 7-11 This document demonstrates the specific details of each sub-test item within the test programs for the power supply assembly, control power supply assembly, DC power supply assembly, control drive assembly, and rod position measurement assembly. The sub-test items for the power supply assembly, control power supply assembly, DC power supply assembly, control drive assembly, and rod position measurement assembly are well-known techniques to those skilled in the art. Figures 7 to 11 The content shown in this embodiment will not be described in detail.

[0060] In one embodiment, the electronic device and the PLC component communicate via a switch, and the test signal is transmitted to the electronic device via the switch through a CAN box-to-Ethernet converter.

[0061] In the foregoing description, the electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or claimed herein. The device includes a computing unit that can perform various appropriate actions and processes according to a computer program stored in read-only memory (ROM) or loaded from a storage unit into random access memory (RAM) 603. Various programs and data required for device operation may also be stored in the RAM. The computing unit, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus. Multiple components in the device are connected to I / O interfaces, including: input units such as keyboards and mice; output units such as various types of displays and speakers; storage units such as disks and optical discs; and communication units such as network interface cards (NICs), modems, and wireless transceivers. The communication units allow the device to exchange information / data with the first chassis, second chassis, and PCL components via computer networks such as the Internet and / or various telecommunications networks.

[0062] In another embodiment of the present invention, a method for functional testing of components of a nuclear power plant rod control and position system is provided, applied to a functional testing device for components of a nuclear power plant rod control and position system described above. The functional testing device includes testing equipment and electronic equipment; the testing equipment includes a PLC component, a first chassis, and a second chassis; wherein the first chassis is used for functional testing of the power supply component, the control power supply component, and the DC power supply component; the second chassis is used for functional testing of the control drive component and the rod position measurement component. The method includes:

[0063] The electronic device sends test commands to the PLC component. When the PLC component receives the test commands, it sends digital and analog signals required for functional testing to the first and second chassis according to the test commands. It tests the functions of each component in the first and second chassis, obtains the functional test test signals, and sends the test signals to the electronic device. The electronic device displays the functional test results of the probe control rod position system component according to the test signals.

[0064] Optionally, the first chassis further includes a conditioning module for measuring the pin impedance of the power supply assembly, control power supply assembly, and DC power supply assembly installed in the first chassis, and for monitoring the power supply voltage of the first chassis.

[0065] Optionally, the second chassis also includes an MCU controller, which measures the pin impedance of the drive control component and the rod position measurement component installed in the second chassis when they are not powered on, and calibrates the digital and analog signals sent by the PLC component.

[0066] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A functional testing device for components of a nuclear power plant rod control and position system, applied to the rod control and position system, wherein the rod control and position system includes a power supply component, a control power supply component, a DC power supply component, a control drive component, and a rod position measurement component, characterized in that, The functional testing equipment includes testing equipment and electronic equipment; The testing equipment includes a PLC component, a first chassis, and a second chassis. The first chassis is used for functional testing of the power supply component, control power supply component, and DC power supply component. The first chassis also includes a conditioning module for measuring the pin impedance of the power supply component, control power supply component, and DC power supply component installed in the first chassis. The second chassis is used for functional testing of the control drive component and the rod position measurement component. The second chassis also includes an MCU controller for measuring the pin impedance of the drive control component and the rod position measurement component installed in the second chassis when not powered on, and for calibrating the digital and analog signals sent by the PLC component. The conditioning module in the first chassis communicates with the second chassis via serial port to transmit the monitored data to the second chassis; The electronic device is used to send test instructions corresponding to the test items to the PLC component. When the PLC component receives the test instructions, it is used to send digital and analog signals required for functional testing to the first and second chassis according to the test instructions, to test the functions of each component in the first and second chassis, to obtain the test signals for functional testing, and to send the test signals to the electronic device. The electronic device displays the functional test results of the rod control and positioning system components according to the test signals.

2. The functional testing equipment for a nuclear power plant rod control rod position system component according to claim 1, characterized in that, The first chassis includes a power supply slot, a control power supply slot, and a first DC power supply slot. The power supply slot is used to install a power supply component, the control power supply slot is used to install a control power supply component, and the first DC power supply slot is used to install a DC power supply component.

3. The functional testing equipment for a nuclear power plant rod control rod position system component according to claim 2, characterized in that, The first chassis also includes a conditioning module, which is used to measure the pin impedance of the power supply assembly, control power supply assembly and DC power supply assembly installed in the first chassis, and also to monitor the power supply voltage of the first chassis.

4. The functional testing equipment for a nuclear power plant rod control rod position system component according to claim 1, characterized in that, The second chassis includes a control drive slot, a rod position slot, and a second DC power supply slot. The control drive slot is used to install a control drive assembly, the rod position slot is used to install a rod position measurement assembly, and the second DC power supply slot is used to install a DC power supply assembly.

5. The functional testing equipment for a nuclear power plant rod control rod position system component according to claim 1, characterized in that, The test equipment also includes a load component for supplying power to the first and second chassis. The load component includes a 380Vac voltage input, a 220Vac voltage input, a 220Vac voltage output, a 260Vac voltage output, a load interface, and a monitoring signal interface. The 260Vac voltage output is obtained by transforming the 380Vac voltage input through a three-phase transformer, and the 220Vac voltage output is obtained by filtering the 380Vac voltage input through a single-phase input filter.

6. The functional testing equipment for a nuclear power plant rod control rod position system component according to claim 1, characterized in that, The electronic device and the PLC component communicate via a switch, and the test signal is transmitted to the electronic device via the switch after being converted from CAN to Ethernet through a CAN box.

7. A method for functional testing of components in a nuclear power plant rod control rod position system, characterized in that, A functional testing device for a nuclear power plant rod control and position system component as described in any one of claims 1 to 6, the functional testing device comprising testing equipment and electronic equipment; the testing equipment comprising a PLC component, a first chassis, and a second chassis; wherein the first chassis is used for functional testing of a power supply component, a control power supply component, and a DC power supply component; the second chassis is used for functional testing of a control drive component and a rod position measurement component, the method comprising: The pin impedances of the power supply assembly, control power supply assembly, and DC power supply assembly installed in the first chassis are measured using the conditioning plug in the first chassis. The pin impedance of the drive control component and the rod position measurement component installed in the second chassis is measured when they are not powered on by the MCU controller in the second chassis, and the digital and analog signals sent by the PLC component are calibrated. The monitoring data is transmitted to the second chassis via serial communication through the conditioning module in the first chassis. The electronic device sends test commands to the PLC component. When the PLC component receives the test commands, it sends digital and analog signals required for functional testing to the first and second chassis according to the test commands. It tests the functions of each component in the first and second chassis, obtains the functional test signals, and sends the test signals to the electronic device. The electronic device displays the functional test results of the rod control and positioning system components according to the test signals.

8. The method for functional testing of a nuclear power plant rod control rod position system component according to claim 7, characterized in that, The first chassis also includes a conditioning module, which measures the pin impedance of the power supply assembly, control power supply assembly and DC power supply assembly installed in the first chassis, and monitors the power supply voltage of the first chassis.

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