A movable nuclear power plant instrumentation and control card detection box

Abstract

The present invention relates to the technical field of detection equipment, and specifically discloses a movable nuclear power plant instrument and control card detection box. The detection box includes a protective box and a box cover, wherein a plurality of first springs are provided on the inner bottom surface of the shell-shaped protective box, and the detection box is supported on the plurality of first springs through a flat load-bearing plate; the box cover is matched and snapped on the upper end of the protective box, and is connected to the protective box through limit rods and locking structures installed on both sides of the box cover; positioning structures are symmetrically provided on the top of both sides of the box cover, which can effectively support and fix the detection box placed in the protective box. Through rapid movement by moving wheels, instrument and control cards in different areas can be detected online in real time around the clock, realizing automatic control and collection of instrument and control card detection and diagnosis, which can effectively improve the work efficiency of personnel and the overall management and control level of instrument and control cards.

Description

Technical Field

[0001] The invention belongs to the technical field of detection equipment, and in particular relates to a movable nuclear power plant instrumentation and control card component detection box. Background Art

[0002] Safety, reliability and economy are the foundations for the survival and development of nuclear power plants. According to the nuclear power development plan proposed by the state, by 2020, the total installed capacity of nuclear power in my country will reach 40 million kilowatts, with 18 million kilowatts under construction. The nuclear power industry is facing good development opportunities, and the group's nuclear power multi-base model is taking shape. Under this situation, it is of great significance to do a good job in the copy test and intelligent fault diagnosis of important equipment in nuclear power plants.

[0003] In 2015, CNNC Nuclear Power Operation Management Co., Ltd. held an equipment reliability management work meeting and conducted special reports on equipment reliability management, non-shutdown events, and the handling of the top ten defects. Among them, there were many incidents related to shutdowns caused by instrumentation and control cards. In the same year, the special assessment of CNNC's operating equipment reliability management produced four items for improvement (AFI), one of which involved the long-term reliability management of instrumentation and control cards. In the INPO "Areas for Improvement" assessment, it was found that in the five years since 2006, circuit boards caused a total of 112 accidents such as shutdowns and load shedding, including 48 shutdowns and 40 load sheddings, resulting in a power generation loss of approximately 5.3 million MWe hours. Summary of the invention

[0004] The purpose of the present invention is to provide a movable nuclear power plant instrument and control card component detection box to solve the disadvantage of insufficient flexibility of the nuclear power plant instrument and control card component detection box in the prior art.

[0005] The technical solution of the present invention is as follows: a movable nuclear power plant instrumentation and control card detection box, which includes a protective box and a box cover, wherein a plurality of first springs are provided on the inner bottom surface of the shell-shaped protective box, and the detection box is supported on the plurality of first springs through a flat load-bearing plate; the box cover is matched and snapped on the upper end of the protective box, and is connected to the protective box through limit rods and locking structures installed on both sides of the box cover; positioning structures are symmetrically provided on the top of both sides of the box cover, which can effectively support and fix the detection box placed in the protective box.

[0006] A base is horizontally installed on the bottom surface of the protection box, a drive motor is horizontally installed in the base, a rotating shaft is horizontally arranged on the bottom surface of the base, moving wheels are installed at both ends of the rotating shaft, the drive motor drives the rotating shaft through a belt, and a mudguard is installed on the bottom surface of the base directly above the moving wheel.

[0007] A slot corresponding to the box cover is vertically opened on the upper end surface of the protection box, and the bottom end of the box cover is vertically inserted into the slot. Limit rods are horizontally installed on both sides of the box cover, and the two sides of the slot are correspondingly penetrated by the limit rods. The limit rods are connected to the protection box through a locking structure; operation windows are symmetrically opened on the bottom of both sides of the protection box.

[0008] The positioning structure includes screw holes, which are vertically opened at the top of both sides of the box cover. The second threaded rod is threadedly connected to the screw holes. The bottom end of the second threaded rod is inserted on the pressure plate. A second spring is sleeved on the second threaded rod between the pressure plate and the screw holes.

[0009] The second spring is always in a compressed state, a second rotating handle is installed at the top end of the second threaded rod, and a first rotating handle is installed at the bottom end of the first threaded rod.

[0010] The locking structure includes a nut, which is horizontally installed on both sides of the protective box. A first threaded rod is vertically screwed in the nut, a first U-shaped card is installed on the top of the first threaded rod, the first U-shaped card is movably connected to the second U-shaped card, a pull rod is vertically installed on the top of the second U-shaped card, a hook is installed on the top of the pull rod, and the hook is engaged with the limit rod.

[0011] The detection box comprises a detachable test module, a collection control device, a signal output device, an environment simulation device and a card adapter device.

[0012] The interior of the detection box is separated into an inner layer and an outer layer. The outer layer is used to place a detachable test module, a card adapter, a KI board and a KO board. The chassis of the detection box is provided with three layers of card placement layers. In addition to placing existing cards, a card adapter is subsequently made according to the shape of the card. The wiring and configuration are performed through the reserved number of channels of the acquisition and control device. At the same time, the user can customize the configuration interface function through the software to realize future software and hardware expansion. The inner layer is placed with a card bottom board, an AO_V board, an AO_I board, an AI module, an X86 box, a power supply, a heater, a dehumidifier, and a switch module.

[0013] The acquisition and control device completes the interface conversion from the background software to the device under test, converts the input value in the test case into a specific hardware contact or analog quantity mode, and converts the output response of the device under test into an Ethernet message and sends it to the background software for use, completing the conversion of communication messages and physical signals between the background software and the device under test.

[0014] The single card slot of the acquisition and control device can realize up to 4 inputs of KI quantity and up to 30 inputs of AI quantity, which are divided into 24 low-speed and 6 high-speed. The low-speed acquisition frequency can reach 10KHz and the high-speed acquisition frequency can reach 500KHz.

[0015] The acquisition and control device communicates with the AC adjustable power supply and the DC adjustable power supply through the TCP / IP protocol to issue control instructions and store the monitoring data at the same time. The acquisition and control device interacts with the website end through Ethernet and uploads the collected data to the website end for display.

[0016] The remarkable effect of the present invention is that the movable nuclear power plant instrument and control card detection box described in the present invention has the following advantages: 1. It can move quickly through the moving wheels to detect the instrument and control cards in different areas online in real time around the clock; 2. It can realize automatic control and collection of instrument and control card detection and diagnosis, which can effectively improve the work efficiency of personnel and improve the overall management and control level of instrument and control cards; 3. According to the analysis and issuance of test examples, it can realize fully intelligent detection of instrument and control, improve maintenance efficiency, and reduce the workload of card maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a movable nuclear power plant instrumentation and control card component detection box proposed by the present invention;

[0018] Figure 2 A side view of a movable nuclear power plant instrumentation and control card detection box proposed by the present invention;

[0019] Figure 3 A partial enlarged view of a movable nuclear power plant instrumentation and control card detection box proposed by the present invention;

[0020] Figure 4 This is an enlarged view of point A of a movable nuclear power plant instrumentation and control card detection box proposed by the present invention;

[0021] Figure 5 This is a wiring diagram of a goaf device of a movable nuclear power plant instrumentation and control card detection box proposed by the present invention;

[0022] Figure 6 The internal wiring diagram of a movable nuclear power plant instrumentation and control card detection box proposed by the present invention;

[0023] In the figure: 1. protective box; 2. first spring; 3. load-bearing plate; 4. slot; 5. box cover; 6. screw hole; 7. second threaded rod; 8. second spring; 9. pressure plate; 10. limit rod; 11. pull rod; 12. second U-shaped card; 13. first U-shaped card; 14. first threaded rod; 15. nut; 16. second rotating handle; 17. first rotating handle; 18. hook; 19. detection box; 20. base; 21. drive motor; 22. rotating shaft; 23. moving wheel; 24. mudguard; 25. belt; 26. operation window. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 6 As shown, a movable nuclear power plant instrument and control card detection box includes a protection box 1 and a box cover 5. A plurality of first springs 2 are vertically installed on the bottom surface of the protection box 1. A load-bearing plate 3 is horizontally placed on the top of the first spring 2. A detection box 19 is placed on the upper surface of the load-bearing plate 3. A slot 4 corresponding to the box cover 5 is vertically opened on the upper end surface of the protection box 1. The bottom end of the box cover 5 is vertically inserted into the slot 4. Limit rods 10 are horizontally installed on both sides of the box cover 5. The two sides of the slot 4 are correspondingly penetrated by the limit rods 10. The limit rods 10 are connected to the protection box 1 through a locking structure. The locking structure includes nuts 15. The nuts 15 are horizontally installed on both sides of the protection box 1. A first threaded rod 14 is vertically screwed in the nuts 15. A first U-shaped card 13 is installed on the top of the first threaded rod 14. The first U-shaped card 13 is movably connected to the second U-shaped card 12. A pull rod 11 is vertically installed on the top of the second U-shaped card 12. A hook 18 is installed on the top of the pull rod 11. 18 is engaged on the limit rod 10, and positioning structures are symmetrically installed on the top of both sides of the box cover 5. The positioning structures include screw holes 6, which are vertically opened on the top of both sides of the box cover 5. The second threaded rod 7 is connected with the inner thread of the screw hole 6, and the bottom end of the second threaded rod 7 is inserted into the pressure plate 9. A second spring 8 is sleeved on the second threaded rod 7 between the pressure plate 9 and the screw hole 6, and the second spring 8 is always in a compressed state. A second rotating handle 16 is installed on the top of the second threaded rod 7, and a first rotating handle 17 is installed on the bottom end of the first threaded rod 14. Operation windows 26 are symmetrically opened on the bottom of both sides of the protective box 1. A base 20 is horizontally installed on the bottom surface of the protective box 1, and a drive motor 21 is horizontally installed in the base 20. A rotating shaft 22 is horizontally arranged on the bottom surface of the base 20, and moving wheels 23 are installed at both ends of the rotating shaft 22. The drive motor 21 drives the rotating shaft 22 through a belt 25, and a fender 24 is installed on the bottom surface of the base 1 just above the moving wheel 23.

[0026] In order to achieve the portability and applicability of the chassis to the site, the mobile detection box adopts a modular design and is a customized aluminum alloy box.

[0027] There are handles on both sides of the outer box for easy carrying; the left side is open for installing various external interfaces; the right side is provided with a water outlet for dehumidifier drainage, and a nameplate is affixed to the lower right part for displaying basic information of the test box.

[0028] The interior of the test box is divided into inner and outer layers, separated by an inner box body.

[0029] The outer layer is equipped with detachable test modules, card adapters, KI boards and KO boards, which are convenient for the replacement of the tested cards and the replacement and expansion of other hardware. The chassis is equipped with three layers of card placement. In addition to placing existing cards, card adapters can be made according to the shape of the cards. The number of channels reserved by the acquisition and control device can be used for wiring and configuration. At the same time, users can customize the configuration interface function through the software, which can realize future software and hardware expansion.

[0030] The inner layer is used to place the card bottom board, AO_V board, AO_I board, AI module, X86 box, power supply, heater, dehumidifier, switch and other modules. The inner layer hardware is fixed equipment and will not change due to the change of the tested card type.

[0031] The acquisition and control device completes the interface conversion from the background software (test case) to the device under test; it mainly converts the input value in the test case into a specific method (such as hardware contacts, analog quantities, etc.), and converts the output response of the device under test (such as hardware contacts, analog quantities, etc.) into an Ethernet message and sends it to the background software (test case) for use, completing the conversion of communication messages and physical signals between the background software and the device under test.

[0032] Based on the analysis of all the cards, a single card slot of the acquisition and control device can realize up to 4 inputs of KI quantity and up to 30 inputs of AI quantity, which are divided into 24 low-speed channels and 6 high-speed channels. The low-speed acquisition frequency can reach 10KHz, and the high-speed acquisition frequency can reach 500KHz.

[0033] The control information between the background software and the acquisition and control device adopts a customized communication protocol. The main completions are: providing acquisition control functions; the acquisition terminal and the background software use Ethernet (internal protocol) to receive the test configuration; the acquisition terminal is connected to the input and output of the device under test through hardware, and the bus communication is directly used with the simulation; different acquisition frequencies are used for different signal types to ensure the accuracy of signal acquisition.

[0034] The acquisition and control terminal uses Ethernet (internal protocol) to receive the test configuration information sent by the background software; it is connected to the input and output pins of the device or card under test through hard wiring. At the same time, the acquisition and control device is also equipped with the card detection test platform control software, which integrates the functions of configuration file reception, test case analysis, command issuance, data upload, etc.

[0035] During the test, the acquisition and control device communicates with the AC adjustable power supply and the DC adjustable power supply through the TCP / IP protocol to issue control instructions and store monitoring data. The switching power supply supplies power to the acquisition and control device. On the other hand, the acquisition and control device interacts with the website through Ethernet, and the collected data is uploaded to the website for display.

[0036] The signal output device is an important part of the whole device, which mainly provides the input signal required by the card to be tested, including: intelligent AO_I board, intelligent AO_V board, and intelligent KO board. They communicate with the X86 box through the CAN bus.

[0037] The box environment control device mainly includes temperature and humidity detection sensors, dehumidifiers, and heaters.

Claims

1. A movable nuclear power plant instrumentation and control card detection box, characterized in that: The detection box comprises a protection box (1) and a box cover (5), wherein a plurality of first springs (2) are provided on the inner bottom surface of the shell-shaped protection box (1), and the detection box (19) is supported on the plurality of first springs (2) via a flat plate-shaped load-bearing plate (3); the box cover (5) is matched and snapped onto the upper end of the protection box (1), and is connected to the protection box (1) via limit rods (10) and locking structures installed on both sides of the box cover (5); positioning structures are symmetrically provided on the tops of both sides of the box cover (5), which can effectively support and fix the detection box (19) placed in the protection box (1); a slot (4) corresponding to the box cover (5) is vertically opened on the upper end surface of the protection box (1), and the The bottom end of the box cover (5) is vertically inserted into the slot (4), and the box cover (5) has limit rods (10) installed horizontally on both sides. The limit rods (10) extend through the two sides of the slot (4), and the limit rods (10) are connected to the protective box (1) through a locking structure. The bottom of both sides of the protective box (1) are symmetrically provided with operation windows (26). The positioning structure comprises screw holes (6), and the screw holes (6) are vertically provided at the tops of both sides of the box cover (5). The screw holes (6) are internally threadedly connected with second threaded rods (7), and the bottom ends of the second threaded rods (7) are inserted on the pressure plate (9), and the second threaded rods (7) between the pressure plate (9) and the screw holes (6) are sleeved with a second threaded rod (26). The second spring (8) is always in a compressed state, a second rotating handle (16) is installed at the top end of the second threaded rod (7), and a first rotating handle (17) is installed at the bottom end of the first threaded rod (14); the locking structure comprises a nut (15), the nut (15) is horizontally installed on both sides of the protection box (1), the first threaded rod (14) is vertically screwed in the nut (15), a first U-shaped clip (13) is installed at the top end of the first threaded rod (14), the first U-shaped clip (13) is movably connected to the second U-shaped clip (12), a pull rod (11) is vertically installed at the top end of the second U-shaped clip (12), and the pull rod (11) is installed at the top end A hook (18) is installed, and the hook (18) is engaged with the limit rod (10); a base (20) is horizontally installed on the bottom surface of the protection box (1), a driving motor (21) is horizontally installed in the base (20), a rotating shaft (22) is horizontally arranged on the bottom surface of the base (20), moving wheels (23) are installed at both ends of the rotating shaft (22), the driving motor (21) drives the rotating shaft (22) through a belt (25), and a fender (24) is installed on the bottom surface of the base (20) directly above the moving wheel (23); the detection box (19) comprises a detachable test module, a collection control device, a signal output device, an environmental simulation device and a card adapter device.

2. A movable nuclear power plant instrumentation and control card detection box according to claim 1, characterized in that: The interior of the detection box (19) is divided into an inner layer and an outer layer. The outer layer is used to place a detachable test module, a card adapter, a KI board and a KO board. The chassis of the detection box (19) is provided with three layers of card placement layers. In addition to placing existing cards, a card adapter is subsequently manufactured according to the shape of the card. Wiring and configuration are performed through the reserved number of channels of the acquisition and control device. At the same time, the user can customize the configuration interface function through the software, so that future software and hardware expansion can be realized. The inner layer is used to place the card bottom board, AO_V board, AO_I board, AI module, X86 box, power supply, heater, dehumidifier, and switch module.

3. A movable nuclear power plant instrumentation and control card detection box according to claim 2, characterized in that: The acquisition and control device completes the interface conversion from the background software to the device under test, converts the input value in the test case into a specific hardware contact or analog quantity mode, and converts the output response of the device under test into an Ethernet message and sends it to the background software for use, completing the conversion of communication messages and physical signals between the background software and the device under test.

4. A movable nuclear power plant instrumentation and control card detection box according to claim 3, characterized in that: The single card slot of the acquisition and control device can realize a maximum of 4 inputs of KI quantity and a maximum of 30 inputs of AI quantity, wherein the low-speed acquisition frequency can reach 10KHz and the high-speed acquisition frequency can reach 500KHz.

5. A movable nuclear power plant instrumentation and control card detection box according to claim 4, characterized in that: The acquisition and control device communicates with the AC adjustable power supply and the DC adjustable power supply through the TCP / IP protocol to issue control instructions and store the monitoring data at the same time. The acquisition and control device interacts with the website end through Ethernet and uploads the collected data to the website end for display.

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