Initial charging detector mounting device in reactor fuel pool

Abstract

The invention relates to the technical field of radiation detection, in particular to an installation device for a primary charging detector in a reactor fuel pool, which comprises an installation support, a movable guide rail, a laser range finder, a cable winding and unwinding device and a control box, and is characterized in that the installation support is arranged at the edge of the reactor fuel pool and comprises a horizontal installation support and a vertical installation support; the moving guide rails comprise a first moving guide rail and a second moving guide rail; the laser range finder is arranged on the second moving guide rail; the cable take-up and pay-off device is arranged on the vertical mounting bracket, and the lower part is connected with the detector through a cable; the control box is fixed to the mounting support and electrically connected with the laser range finder and the cable winding and unwinding device. The device is simple in structure, quick to mount and dismount, capable of accurately determining the position of the initial loading detector in the vertical direction, high in measurement precision, continuous, capable of automatically adjusting the mounting position of the detector, accurate in positioning and convenient for real-time monitoring of the position of the detector.

Description

Technical Field

[0001] The present application relates to the field of radiation detection technology, and in particular to an installation device for an initial loading detector in a reactor fuel pool. Background Art

[0002] The main function of the initial fuel loading detection system of a nuclear power plant is to monitor the neutron injection rate and changes in the core during the initial fuel loading of the reactor. Since the neutrons released by the components during the loading process are relatively small, and the source range channel of the extra-core nuclear measurement system is a certain distance away from the core, in order to more accurately reflect the state of the core, a temporary detector is required in the core to ensure that no critical or supercritical accidents occur during the loading process, and to ensure the safety of the initial fuel loading of the reactor.

[0003] Therefore, it is particularly important to ensure that the measuring section of the primary charging detector is highly consistent with the secondary source position and to achieve accurate longitudinal positioning of the probe. In the prior art, the primary charging detector is generally installed by manual adjustment and position measurement, and the measurement results are not accurate and cannot adapt to the complex installation environment on site. Summary of the invention

[0004] The present application provides a device for installing a primary loading detector in a reactor fuel pool, which can monitor the position information of the detector in real time and facilitate the installation and placement of the detector.

[0005] In order to achieve the above-mentioned purpose, the present application provides an installation device for an initial loading detector in a reactor fuel pool, comprising a mounting bracket, a movable guide rail, a laser rangefinder, a cable retracting device and a control box, wherein: the mounting bracket is arranged at the edge of the reactor fuel pool, and comprises a horizontal mounting bracket and a vertical mounting bracket; the movable guide rail comprises a first movable guide rail and a second movable guide rail, the first movable guide rail is fixed on the horizontal mounting bracket, the second movable guide rail is arranged on the first movable guide rail, and the second movable guide rail as a whole can move on the first movable guide rail; the laser rangefinder is arranged on the second movable guide rail and can move on the second movable guide rail; the cable retracting device is arranged on the vertical mounting bracket, and is connected to the detector through a cable at the bottom; the control box is fixed on the mounting bracket, and is electrically connected to the laser rangefinder and the cable retracting device respectively.

[0006] Furthermore, a first driving motor is provided on the first movable guide rail for driving the second movable guide rail to move in a vertical direction on the first movable guide rail; a second driving motor is provided on the second movable guide rail for driving the laser rangefinder to move in a horizontal direction on the second movable guide rail.

[0007] Furthermore, it also includes a control system, which is connected to the control box.

[0008] Furthermore, the measurement accuracy of the laser rangefinder is ±1 mm and the measurement frequency is 1 Hz.

[0009] Furthermore, the material of the mounting bracket is aluminum alloy.

[0010] Furthermore, the control box as a whole adopts a sealed structure, and the operating temperature range is -10°C to 50°C.

[0011] Furthermore, a power supply module and a control management module are provided inside the control box, wherein: the power supply module is electrically connected to the first drive motor, the second drive motor, the laser rangefinder and the cable retracting device, respectively, for power supply; the control management module is electrically connected to the first drive motor and the second drive motor, respectively, for controlling the moving position and distance of the laser rangefinder; the control management module is electrically connected to the laser rangefinder, for receiving position information detected by the laser rangefinder; the control management module is also electrically connected to the cable retracting device, for controlling and adjusting the position of the detector.

[0012] Furthermore, the control system includes an AI intelligent module, a central processing module and a display module, wherein: the central processing module is electrically connected to the AI ​​intelligent module and the control management module respectively, for processing the detector position information and adjusting its position; the AI ​​intelligent module is electrically connected to the control management module, for intelligently identifying the positioning information of the detector; the display module is electrically connected to the central processing module, for displaying the detector position information and adjustment information.

[0013] The present application provides a first-time loading detector installation device in a reactor fuel pool, which has the following features:

[0014] Beneficial effects:

[0015] The present application has a simple structure and is quick to install and remove. It can accurately determine the vertical position of the initial loading detector, has high and continuous measurement accuracy, can automatically adjust the installation position of the detector, accurately positions it, and facilitates real-time monitoring of the detector position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0017] Figure 1 is a schematic diagram of an installation device for a first-time loading detector in a reactor fuel pool according to an embodiment of the present application;

[0018] In the figure: 1-horizontal mounting bracket, 2-vertical mounting bracket, 3-first movable guide rail, 4-second movable guide rail, 5-laser rangefinder, 6-cable retracting device, 7-control box, 8-first drive motor, 9-second drive motor, 10-control system. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0023] In addition, the term "plurality" shall mean two or more.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] like Figure 1 As shown, the present application provides an installation device for an initial loading detector in a reactor fuel pool, comprising a mounting bracket, a movable guide rail, a laser rangefinder 5, a cable retracting device 6 and a control box 7, wherein: the mounting bracket is arranged at the edge of the reactor fuel pool, and comprises a horizontal mounting bracket 1 and a vertical mounting bracket 2; the movable guide rail comprises a first movable guide rail 3 and a second movable guide rail 4, the first movable guide rail 3 is fixed on the horizontal mounting bracket 1, the second movable guide rail 4 is arranged on the first movable guide rail 3, and the second movable guide rail 4 as a whole can move on the first movable guide rail 3; the laser rangefinder 5 is arranged on the second movable guide rail 4 and can move on the second movable guide rail 4; the cable retracting device 6 is arranged on the vertical mounting bracket 2, and is connected to the detector through a cable at the bottom; the control box 7 is fixed on the mounting bracket, and is electrically connected to the laser rangefinder 5 and the cable retracting device 6 respectively.

[0026] Specifically, the initial charging detector installation device in the reactor fuel pool provided by the embodiment of the present application is mainly used to determine the position of the initial charging detector, and can automatically adjust the position of the detector according to the actual detection situation. Among them, the mounting seat bracket plays the role of fixed support, and is arranged as a whole at the edge of the reactor fuel pool. The horizontal mounting bracket 1 is used to fix the movable guide rail, and the vertical mounting bracket 2 is used to fix the cable retracting device 6 and the control box 7; the movable guide rail is fixed to the horizontal mounting bracket 1 as a whole by screws, which can realize rapid installation and disassembly; the laser rangefinder 5 is used for continuous measurement and real-time provision of detector depth position information; during detection, the laser rangefinder 5 will emit laser, and adjust the distance of the laser rangefinder 5 in the horizontal and vertical directions by moving the guide rail. When the emitted laser hits the detector, it will be reflected, and the real-time vertical height information of the detector can be determined based on the reflected light; the initial charging detector is connected below the cable retracting device 6, which can make the detector move up and down, thereby realizing the control of the distance of the detector in the vertical direction; the control box 7 is used to supply power to each mechanism and control the moving position of the laser rangefinder 5 and the extension length of the cable of the cable retracting device 6.

[0027] Furthermore, a first driving motor 8 is provided on the first moving guide rail 3 to drive the second moving guide rail 4 to move in the vertical direction on the first moving guide rail 3; a second driving motor 9 is provided on the second moving guide rail 4 to drive the laser rangefinder 5 to move in the horizontal direction on the second moving guide rail 4. The first driving motor 8 can drive the second moving guide rail 4 to move in the Y-axis direction on the first moving guide rail 3 as a whole; the second driving motor 9 can drive the laser rangefinder 5 to move in the X-axis direction on the second moving guide rail 4; thus, the laser rangefinder 5 can move left and right in the horizontal direction and up and down in the vertical direction, and the moving accuracy can reach 1mm.

[0028] Furthermore, it also includes a control system 10, which is connected to the control box 7. The control system 10 is used to process the position information of the detector, adjust the position of the detector in real time according to the position information, and display the position information and adjustment information of the detector.

[0029] Furthermore, the laser rangefinder 5 has a measurement accuracy of ±1 mm and a measurement frequency of 1 Hz. The laser rangefinder 5 can perform continuous measurement, display and record distance information at a frequency of 1 Hz, and has a measurement accuracy of ±1 mm, which greatly improves the installation accuracy of the existing primary charging detector.

[0030] Furthermore, the mounting bracket is made of aluminum alloy, which has a light overall weight, high strength, and is easy to disassemble. It can adapt to the complex and narrow environment of a nuclear power site and can be easily transported when in use.

[0031] Furthermore, the control box 7 as a whole adopts a sealed structure, and the operating temperature range is -10°C to 50°C, which can adapt to the temperature and humidity environment of the nuclear power site.

[0032] Furthermore, a power supply module and a control management module are provided inside the control box 7, wherein: the power supply module is electrically connected to the first drive motor 8, the second drive motor 9, the laser rangefinder 5 and the cable retracting device 6, respectively, for power supply; the control management module is electrically connected to the first drive motor 8 and the second drive motor 9, respectively, for controlling the moving position and distance of the laser rangefinder 5; the control management module is electrically connected to the laser rangefinder 5, for receiving the position information detected by the laser rangefinder 5; the control management module is also electrically connected to the cable retracting device 6, for controlling and adjusting the position of the detector.

[0033] Furthermore, the control system 10 includes an AI intelligent module, a central processing module and a display module, wherein: the central processing module is electrically connected to the AI ​​intelligent module and the control management module respectively, for processing the detector position information and adjusting its position; the AI ​​intelligent module is electrically connected to the control management module, for intelligently identifying the positioning information of the detector; the display module is electrically connected to the central processing module, for displaying the detector position information and adjustment information.

[0034] Specifically, when the embodiment of the present application performs the initial loading detector detection and installation, first, the detector is placed in the reactor fuel pool through the cable retracting device 6; then, the first drive motor 8 and the second drive motor 9 are controlled by the control management module to operate, so that the laser rangefinder 5 moves on the movable guide rail to detect and measure the position of the detector below; then, the control management module receives the reflected light information and uploads it to the AI ​​intelligent module and the central processing module respectively, and the central processing module determines the specific position of the detector according to the reflected light information and the positioning result of the AI ​​intelligent module, and displays the position through the display module; finally, according to the actual detection situation, the cable retracting device 6 is controlled by the control management module to adjust the position of the detector in the reactor fuel pool, and the position information of the detector is monitored and displayed again through the laser rangefinder 5, thereby realizing real-time monitoring and real-time adjustment of the position of the detector in the reactor fuel pool, and ensuring the accurate positioning of the detector position.

[0035] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for installing a first-time loading detector in a reactor fuel pool, characterized in that: It includes a mounting bracket, a movable guide rail, a laser rangefinder, a cable retracting device and a control box, wherein: The mounting bracket is arranged at the edge of the reactor fuel pool, and includes a horizontal mounting bracket and a vertical mounting bracket; The movable guide rail comprises a first movable guide rail and a second movable guide rail, wherein the first movable guide rail is fixed on the horizontal mounting bracket, and the second movable guide rail is arranged on the first movable guide rail, and the second movable guide rail as a whole can move on the first movable guide rail; The laser rangefinder is arranged on the second movable guide rail and can move on the second movable guide rail; The cable retracting device is arranged on the vertical mounting bracket and is connected to the detector through a cable at the bottom; The control box is fixed on the mounting bracket and is electrically connected to the laser rangefinder and the cable retracting device respectively.

2. The initial loading detector installation device in the reactor fuel pool according to claim 1 is characterized in that: The first movable guide rail is provided with a first driving motor for driving the second movable guide rail to move in a vertical direction on the first movable guide rail; the second movable guide rail is provided with a second driving motor for driving the laser rangefinder to move in a horizontal direction on the second movable guide rail.

3. The initial loading detector installation device in the reactor fuel pool according to claim 2, characterized in that: It also includes a control system, which is connected to the control box.

4. The initial loading detector installation device in the reactor fuel pool according to claim 3 is characterized in that: The measurement accuracy of the laser rangefinder is ±1 mm, and the measurement frequency is 1 Hz.

5. The initial loading detector installation device in the reactor fuel pool according to claim 4, characterized in that: The material of the mounting bracket is aluminum alloy.

6. The initial loading detector installation device in the reactor fuel pool according to claim 5, characterized in that: The control box as a whole adopts a sealed structure, and the operating temperature range is -10°C to 50°C.

7. The initial loading detector installation device in the reactor fuel pool according to claim 6, characterized in that: The control box is internally provided with a power supply module and a control management module, wherein: The power supply module is electrically connected to the first drive motor, the second drive motor, the laser rangefinder and the cable retracting device respectively for supplying power; The control management module is electrically connected to the first drive motor and the second drive motor respectively, and is used to control the moving position and distance of the laser rangefinder; The control management module is electrically connected to the laser rangefinder and is used to receive the position information detected by the laser rangefinder; The control management module is also electrically connected to the cable retracting device and is used to control and adjust the position of the detector.

8. The initial loading detector installation device in the reactor fuel pool according to claim 7, characterized in that: The control system includes an AI intelligent module, a central processing module and a display module, wherein: The central processing module is electrically connected to the AI ​​intelligent module and the control management module respectively, and is used for processing the position information of the detector and adjusting its position; The AI ​​intelligent module is electrically connected to the control management module and is used to intelligently identify the positioning information of the detector; The display module is electrically connected to the central processing module and is used to display the position information and adjustment information of the detector.

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