An automated monitoring system for nuclear power pipeline displacement

Abstract

An automated monitoring system for nuclear power pipeline displacement includes a target device fixed on a pipeline node to be measured and a laser emission collection device installed on a fixed object, the target device includes a target clamp and a target fixed on the target clamp, the laser emission collection device includes a laser emission collector, the center of the laser emission collector and the center of the target are set on the same horizontal line, the laser emission collector emits laser to the target in real time, collects the relative distance between the two, and then obtains the displacement of the pipeline. The automated monitoring system of the present invention fills the gap in automated pipeline monitoring in the nuclear power field, has a small size and occupies little space; has high measurement accuracy, and can be used in any complex environment; does not require manual detection, reducing personnel costs; real-time monitoring can detect danger signals in time to protect life and property safety.

Description

Technical Field

[0001] The present invention belongs to the technical field of structural monitoring in civil engineering, and in particular relates to an automated monitoring system for nuclear power pipeline displacement. The automated monitoring system of the present invention is not only suitable for nuclear power pipeline displacement monitoring, but also for pipeline displacement monitoring in other civil industrial fields. Background Art

[0002] In the prior art, the research and development of pipeline displacement monitoring systems mainly focuses on the research and development of oil and gas pipeline displacement monitoring systems in permafrost areas and steam pipeline displacement monitoring systems in thermal power plants.

[0003] Displacement monitoring of oil and gas pipelines in permafrost regions primarily utilizes total stations. This involves installing reference and sighting stakes in the monitoring area, attaching pipe clamps to the pipelines to be monitored, and establishing a local coordinate system using the reference and sighting stakes. Manual field measurements are then performed regularly to observe pipeline displacement. This method generates long-periodic point data with poor reproducibility, and requires sufficient space to set up the total station.

[0004] Steam pipeline displacement monitoring in thermal power plants relies on manual inspection, which uses cameras to observe targets and process responses. This system is highly susceptible to human influence and has low accuracy.

[0005] Pipeline displacement monitoring in the nuclear power sector currently uses manual measurement and there is no automated monitoring system. This is mainly because nuclear power pipelines are mostly installed indoors in narrow spaces, and some pipelines are located in harsh environments with high temperatures and high water vapor. Therefore, the requirements for nuclear power pipeline displacement monitoring devices are very high, so a suitable automated monitoring system has not yet been developed. Summary of the Invention

[0006] In response to the defects in the prior art, the present invention provides an automated monitoring system for nuclear power pipeline displacement, which is small in size, high in precision, and can be used in any complex environment. It does not require manual inspection, thus reducing personnel costs.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: to provide an automated monitoring system for the displacement of nuclear power pipelines, including a target device fixed on the node to be measured on the pipeline and a laser emission and collection device installed on a fixed object, the target device including a target clamp and a target connected to the target clamp, the laser emission and collection device including a laser emission and collection device, the center of the laser emission and collection device and the center of the target are arranged on the same horizontal line, the laser emission and collection device emits laser at the target in real time, continuously collects the relative distance between the two, and thereby obtains the displacement of the pipeline at different times.

[0008] Furthermore, in the above-described automated monitoring system for nuclear power pipeline displacement, the target device further includes a U-shaped hoop and a U-shaped connector, the upper end of the U-shaped hoop is connected to the target clamp, the lower end of the U-shaped hoop is connected to the U-shaped connector, and the U-shaped connector fixes the target.

[0009] Furthermore, in an automated monitoring system for nuclear power pipeline displacement as described above, the target device also includes a scale compass assembly for adjusting the target angle, the scale compass assembly includes a scale compass and a rotating shaft, the scale compass is placed on the upper surface of the bottom of the U-shaped hoop, and the rotating shaft passes through the scale compass and the U-shaped hoop and is connected to the U-shaped connector.

[0010] Furthermore, in the above-described automated monitoring system for nuclear power pipeline displacement, an angle slot is radially provided on the upper surface of the graduated compass, and an angle clamping rod is radially provided on the rotating shaft, and the angle clamping rod is used in conjunction with the angle slot.

[0011] Furthermore, in the above-mentioned automated monitoring system for displacement of nuclear power pipelines, a rotatable buckle is provided at the end of the angle clamping rod.

[0012] Furthermore, in the above-mentioned automated monitoring system for nuclear power pipeline displacement, the angle clamping rod and the rotating shaft are integrally formed.

[0013] Furthermore, in the above-described automated monitoring system for nuclear power pipeline displacement, the laser emission and collection device further includes a laser emission and collection device protection box disposed outside the laser emission and collection device and a protective outer box disposed outside the laser emission and collection device protection box.

[0014] Furthermore, in the above-mentioned automated monitoring system for nuclear power pipeline displacement, four laser emission collectors are arranged in the laser emission collector protection box, and the four laser emission collectors are distributed in different directions.

[0015] Furthermore, the automated monitoring system for nuclear power pipeline displacement as described above also includes a monitoring terminal, which is electrically connected to the laser emission and acquisition device, and is used to obtain test data on the laser emission and acquisition device, and compare the test data with the preset value in the monitoring terminal. If the preset value is exceeded, an alarm is issued.

[0016] The beneficial technical effects of the present invention are:

[0017] (1) The automated monitoring system provided by the present invention, by setting up a laser emission and collection device and a target device, utilizes the principle of laser emission to obtain the displacement between two nodes at different times, which not only provides protection for the safety of the pipeline, but also provides data basis for pipeline vibration testing. It has high accuracy and high degree of automation, is not affected by water vapor, and can be used indoors or outdoors.

[0018] (2) The automated monitoring system provided by the present invention is small in size, occupies a small space, does not require the installation of other instruments, and is suitable for monitoring more complex locations.

[0019] (3) The automated monitoring system provided by the present invention can conduct real-time and uninterrupted monitoring so as to promptly detect danger signals, protect the safety of life and property, and obtain valuable data for the field of nuclear power pipeline monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 、 2 These are two different installation diagrams of the automatic monitoring system of the present invention;

[0021] Figure 3 It is a three-dimensional diagram of the target device;

[0022] Figure 4 is a front view of the target device;

[0023] Figure 5 It is a schematic diagram of the structure of the graduated compass assembly;

[0024] Figure 6 、 7 This is a diagram of the usage state of the graduated compass component;

[0025] Figure 8 This is an exploded view of the laser emission and collection device.

[0026] In the picture:

[0027] 1-Pipeline 2-Target device 3-Laser emission and collection device 4-Laser emission and collection device clamp 5-Wall 21-Target clamp 22-Bolt 23-Scale compass assembly 24-U-shaped clamp 25-U-shaped connector 26-Target 231-Rotating shaft 232, 236-Rotating shaft nut 233-Snap buckle 234-Angle clamp rod 235-Scale compass 237-Angle clamp slot 31-Protective outer box 32-Data display screen 33-Connecting bolt 34-Laser emission and collection device 35-Laser emission and collection device protection box 36-Cable terminal DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0029] The present invention provides an automated monitoring system for nuclear power pipeline displacement, comprising a target device 2 and a laser emission and collection device 3. The target device 2 is fixed on a node of the pipeline 1 to be measured, and the laser emission and collection device 3 is fixed on a wall 5 or on a pipeline 1 close to the wall. Figure 1 、 2As shown. The specific mounting method for the laser emission and acquisition device 3 needs to be determined based on the site conditions and test content. It should be noted that if the laser emission and acquisition device 3 is fixed to the pipe 1 near the wall, a laser emission and acquisition device clamp 4 is required. In addition, to ensure accurate data collection, the center of the laser emission and acquisition device should be placed on the same horizontal line as the center of the target device.

[0030] The target device 2 includes a target clamp 21, a U-shaped clamp 24, a graduated compass assembly 23, a U-shaped connector 25, and a target 26. The target clamp 21 is fixed to the pipe 1, the upper end of the U-shaped clamp 24 is connected to the lower end of the target clamp 21 by a bolt 22, the lower end of the U-shaped clamp 24 is connected to the U-shaped connector 25 by the graduated compass assembly 23, and the target 26 is fixed to the U-shaped connector 25. Figure 3 、 4 shown.

[0031] The graduated compass assembly 23 includes a graduated compass 235 and a rotating shaft 231. The graduated compass 235 is fixed on the inner bottom surface of the U-shaped hoop 24. Both the graduated compass 235 and the U-shaped hoop 24 have a center hole. The rotating shaft 231 passes through the center holes of the graduated compass 235 and the U-shaped hoop 24 and is connected to the U-shaped connector 25.

[0032] An angle clamping groove 237 is provided radially on the upper surface of the graduated compass 235, and an angle clamping rod 234 is provided radially on the upper portion of the rotating shaft 231. The angle clamping rod 234 cooperates with the angle clamping groove 237. A plurality of angle clamping grooves 237 and angle clamping rods 234 can be provided as needed. To ensure that the angle clamping rod 234 does not rotate in the angle clamping groove 237, a rotatable buckle 233 is provided at the end of the angle clamping rod 234. Figure 5 In addition, in order to facilitate installation and processing, the angle clamping rod 234 and the rotating shaft 231 can be integrally formed.

[0033] When in use, first determine the test position of the pipeline displacement; then install the laser emission and collection device clamp 4 and the target clamp 21 at both ends of the test position; determine the angle of the target 26 according to the different test positions; then put the angle clamp 234 into the corresponding angle clamping groove 237, rotate the buckle 233 to clamp the angle clamp 234 so that it cannot rotate; finally, fix it with the shaft nut 232 and the shaft nut 236, as shown in FIG. Figure 6 、 7 shown.

[0034] The target of the present invention has a simple structure, the angle of which can be arbitrarily adjusted by a graduated compass without the need for other auxiliary equipment, and is flexible and convenient.

[0035] The laser emission collection device 3 includes a protective outer box 31, a laser emission collection protective box 35, and a laser emission collector 34. The laser emission collector 34 is set in the laser emission collection protective box 35 and is connected to the external power supply through a cable terminal 36. The laser emission collection protective box 35 is set in the protective outer box 31 and is connected to the protective outer box 31 through a connecting bolt 33. A data display screen 32 is set on the protective outer box 31 to facilitate reading data, such as Figure 8 shown.

[0036] In order to ensure the accuracy of the collected data, four laser emitting collectors 34 can be set in the laser emitting collector protection box 35. The four laser emitting collectors 34 are distributed in different directions. When working, they emit lasers at the same time to collect the distance between them and the target.

[0037] The laser emission collector of the present invention is not affected by water vapor, can be used in any complex environment, and can measure and record pipeline displacement in real time.

[0038] The automated monitoring system also includes a control terminal electrically connected to four laser emitters and collectors. The control terminal simultaneously acquires test data from the four laser emitters and collectors, then averages the four sets of data to determine the distance between the laser emitters and collectors and the target. This data is then compared with a preset value in the terminal. If the value exceeds the preset value, an alarm is triggered. This allows for timely detection of danger signals and the issuance of warnings, protecting life and property.

[0039] The diameters of the clamp and target clamp of the laser emission and collection device of the present invention are determined according to the diameter of the pipeline. The clamp and target device of the laser emission and collection device need to be made of plates with sufficient rigidity to ensure that the laser emission and collection device and the target device do not suffer in-plane twisting due to pipeline vibration.

[0040] The automated monitoring system of the present invention is not limited to the size of components. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic monitoring system for nuclear power pipeline displacement, characterized by: The invention comprises a target device (2) fixed on a node to be measured of a pipeline (1) and a laser emission and collection device (3) installed on a fixed object, wherein the target device (2) comprises a target clamp (21) and a target (26) connected to the target clamp (21), and the laser emission and collection device (3) comprises a laser emission and collection device (34), wherein the center of the laser emission and collection device (34) and the center of the target (26) are arranged on the same horizontal line, and the laser emission and collection device (34) emits laser light to the target (26) in real time, continuously collects the relative distance between the two, and thereby obtains the displacement of the pipeline at different times; the target device (2) further comprises a U-shaped hoop (24) and a U-shaped connector (25), wherein the upper end of the U-shaped hoop (24) is connected to the target clamp (21), the lower end of the U-shaped hoop (24) is connected to the U-shaped connector (25), and the U-shaped connector (25) is connected to the target clamp (21). 5) fixing the target (26); the target device (2) further comprises a graduated compass assembly (23) for adjusting the angle of the target (26); the graduated compass assembly (23) comprises a graduated compass (235) and a rotating shaft (231); the graduated compass (235) is placed on the upper surface of the bottom of the U-shaped hoop (24); the graduated compass (235) and the U-shaped hoop (24) both have a central hole; the rotating shaft (231) passes through the central holes of the graduated compass (235) and the U-shaped hoop (24) and is connected to the U-shaped connecting piece (25); an angle clamping groove (237) is radially arranged on the upper surface of the graduated compass (235); an angle clamping rod (234) is radially arranged on the rotating shaft (231); the angle clamping rod (234) cooperates with the angle clamping groove (237) for use; and a rotatable buckle (233) is provided at the end of the angle clamping rod (234).

2. The automatic monitoring system for nuclear power pipeline displacement according to claim 1, characterized in that: The angle clamping rod (234) is integrally formed with the rotating shaft.

3. The automatic monitoring system for nuclear power pipeline displacement according to claim 2, characterized in that: The laser emission and collection device (3) further comprises a laser emission and collection device protection box (35) arranged outside the laser emission and collection device (34) and a protective outer box (31) arranged outside the laser emission and collection device protection box (35).

4. The automatic monitoring system for nuclear power pipeline displacement according to claim 3, characterized in that: Four laser emission collectors (34) are arranged in the laser emission collector protection box (35), and the four laser emission collectors (34) are evenly distributed in different directions.

5. An automatic monitoring system for nuclear power pipeline displacement according to any one of claims 1 to 4, characterized in that: It also includes a monitoring terminal, which is electrically connected to the laser emission and collection device and is used to obtain test data on the laser emission and collection device and compare the test data with a preset value in the monitoring terminal. If the preset value is exceeded, an alarm is issued.

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