Power grid power transmission tower top displacement change monitoring device

Abstract

The utility model discloses a power grid power transmission tower top displacement change monitoring device, which relates to the technical field of power transmission tower state monitoring and comprises a laser positioning component and a light sensation receiving component. The laser positioning part comprises a magnetic attraction fixing plate, and a positioning laser transmitter and a laser range finder which are mounted on the bottom surface of the magnetic attraction fixing plate; the top surface of the magnetic attraction fixing plate is fixed at the center of the tower top of the iron tower in a magnetic attraction manner; the positioning laser transmitter comprises a fixed positioning laser transmitter which is vertically and fixedly mounted with the magnetic attraction fixing plate and a free positioning laser transmitter which is freely hinged with the magnetic attraction fixing plate; the light sensation receiving part comprises a fixed flat plate, and a circular light sensation receiver and a data analyzer which are fixedly mounted on the fixed flat plate; the fixed flat plate is horizontally installed on the center ground of the bottom of the iron tower, and the circular light sensation receiver is electrically connected with the data analyzer and used for receiving laser beams emitted by the positioning laser emitter. The device is simple to install and use, has high measurement precision, and can monitor the real-time displacement change condition of the power transmission tower.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission tower status monitoring, in particular to a device for monitoring displacement changes of a top of a power grid transmission tower. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Transmission towers, referred to as transmission towers, are the supporting points of overhead lines of power transmission networks. Transmission towers are subject to complex forces in their natural state. They are affected by various external loads such as conductor tension, wind load, rain load, and earthquake load. When the load deformation of the transmission tower exceeds the limit, local buckling of the tower rods will occur, leading to a tower collapse accident, affecting the safety and stability of the power supply system. Transmission tower displacement monitoring technology can help staff monitor the overall deformation of the transmission tower in real time, collect the displacement response of the transmission tower in extreme weather such as strong winds, heavy rains, and earthquakes, and obtain important parameters such as the vibration amplitude, vibration frequency, and acceleration of the transmission tower; at the same time, through long-term monitoring, the permanent deformation of the transmission tower such as the tilt of the transmission tower caused by foundation settlement and other reasons can be obtained. When the above-mentioned monitoring parameters of the transmission tower exceed the design indicators, measures such as transmission tower reinforcement should be taken to ensure the safety of the transmission tower. At present, the traditional way to measure deformation displacement such as tower inclination is usually to use total station and other instruments for manual measurement. However, due to the complex structure and large size of transmission towers, this measurement method is time-consuming and labor-intensive, with large measurement errors. It is also impossible to obtain real-time displacement changes over a period of time, and thus it is impossible to accurately evaluate the operating status of the transmission tower. Utility Model Content

[0004] In view of the above-mentioned problems and defects existing in the prior art, the utility model provides a monitoring device for the displacement change of the top of a power grid transmission tower. A laser transmitter and a receiver are arranged at the center of the top of the transmission tower and on the ground at the center of the bottom of the tower, and a laser rangefinder is also arranged. By detecting the distance and displacement change by laser, 360-degree real-time monitoring of the displacement change of the top of the transmission tower can be achieved, and multiple parameter information such as the deformation displacement, vibration frequency, acceleration and inclination angle of the transmission tower can be obtained at the same time. The whole device is easy to install and use, does not require manual on-site measurement operation, has high measurement accuracy, and supports remote data transmission. It can obtain the real-time displacement change of the transmission tower at every moment, and provide data support for accurately evaluating the operating status of the transmission tower.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for monitoring displacement changes of a top of a power transmission tower of a power grid, comprising a laser positioning component and a light-sensing receiving component;

[0007] The laser positioning component includes a magnetic fixing plate and a positioning laser transmitter and a laser rangefinder installed on its bottom surface; the magnetic fixing plate is a flat plate, and its top surface is magnetically fixed at the center of the top of the tower; the positioning laser transmitter includes a fixed positioning laser transmitter vertically fixed to the magnetic fixing plate and a free positioning laser transmitter freely articulated to the magnetic fixing plate;

[0008] The photosensitive receiving component includes a fixed plate and a circular photosensitive receiver fixedly mounted thereon, and a data analyzer; the fixed plate is horizontally mounted on the ground at the center of the bottom of the tower, the circular photosensitive receiver is used to receive the laser beam emitted by the positioning laser transmitter, and the circular photosensitive receiver is electrically connected to the data analyzer.

[0009] According to a further technical solution, the laser positioning component also includes a power supply magnetic fixing plate and a first solar panel power supply, wherein the first solar panel power supply is fixedly mounted on the power supply magnetic fixing plate, and the power supply magnetic fixing plate is magnetically fixed on the iron tower.

[0010] According to a further technical solution, the first solar panel power supply is electrically connected to the positioning laser transmitter and the laser rangefinder via a first wire.

[0011] According to a further technical solution, the laser rangefinder has a built-in gateway, and the laser rangefinder transmits data with a data analyzer via the gateway.

[0012] According to a further technical solution, the light-sensing receiving component also includes a gateway, and the gateway is electrically connected to the data analyzer.

[0013] According to a further technical solution, the light-sensing receiving component further includes a second solar panel power supply, and the second solar panel power supply is electrically connected to the data analyzer and the circular light-sensing receiver via a second wire.

[0014] According to a further technical solution, the second solar panel power supply is fixedly mounted on a fixed flat plate.

[0015] According to a further technical solution, a horizontal bubble is provided in the circular light-sensing receiver.

[0016] According to a further technical solution, a plurality of fixing holes are provided on the fixing plate, and rivets are passed through the fixing holes to fix the fixing plate horizontally on the ground.

[0017] A further technical solution is that when the power grid transmission tower top displacement change monitoring device is initially installed, the laser beams emitted by the fixed positioning laser transmitter and the free positioning laser transmitter are both aimed at the center of the circular light-sensitive receiver.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model provides a monitoring device for the displacement change of the top of a power transmission tower. A laser transmitter and a receiver are arranged at the center of the top of the transmission tower and on the ground at the center of the bottom of the tower. A laser rangefinder is also arranged. The laser detects the distance and displacement change to achieve 360-degree real-time monitoring of the displacement change of the top of the transmission tower. At the same time, multiple parameter information such as the deformation displacement, vibration frequency, acceleration and tilt angle of the transmission tower can be obtained. The whole device is easy to install and use, supports remote data transmission, does not require manual on-site measurement operation, and has high measurement accuracy.

[0020] 2. The power grid transmission tower top displacement change monitoring device proposed by the utility model is simple to install and easy to operate. After one-time installation and fixation, long-term monitoring can be achieved without repeated installation, saving manpower. In addition, the device is powered by solar cells, a clean energy source, to achieve long-term monitoring and meet the monitoring of the entire operating status of the tower during its service.

[0021] 3. The power grid transmission tower top displacement change monitoring device proposed in the utility model can obtain multiple parameter data such as deformation displacement, inclination, vibration amplitude, frequency, acceleration, settlement, etc. of the transmission tower by recording the distance and displacement changes based on laser monitoring. It can obtain the real-time displacement changes at each moment and within a period of time, and provide data support for accurately evaluating the operating status of the transmission tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 It is a structural schematic diagram of the laser positioning component in the power grid transmission tower top displacement change monitoring device of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a light-sensing receiving component in the device for monitoring displacement changes at the top of a power grid transmission tower according to the utility model.

[0025] Among them, 1. Magnetic fixing plate; 2. Free-style positioning laser transmitter; 3. Fixed positioning laser transmitter; 4. First wire; 5. First solar panel power supply; 6. Power supply magnetic fixing plate; 7. Laser rangefinder; 8. Circular light receiver; 9. Data analyzer; 10. Second solar panel power supply; 11. Second wire; 12. Level bubble; 13. Fixed plate. DETAILED DESCRIPTION

[0026] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] The utility model discloses a device for monitoring the displacement change of the top of a power transmission tower, comprising a laser positioning component and a light receiving component; Figure 1 As shown, the laser positioning component is installed vertically downward at the center of the top of the iron tower. The laser positioning component includes a magnetic fixing plate 1, a positioning laser emitter and a laser rangefinder 7. The magnetic fixing plate 1 is a flat plate. The positioning laser emitter and the laser rangefinder 7 are both installed on the bottom surface of the magnetic fixing plate 1. The top surface of the magnetic fixing plate 1 is magnetically fixed at the center of the top of the iron tower, that is, the positioning laser emitter and the laser rangefinder are fixed at a predetermined position on the top of the iron tower through the magnetic fixing plate 1. Further, the positioning laser emitter includes a fixed positioning laser emitter 3 fixedly installed vertically with the magnetic fixing plate 1 and a free-style positioning laser emitter 2 freely hinged with the magnetic fixing plate 1. The root of the fixed positioning laser emitter 3 is fixed and can tilt with the tilt of the transmission tower, while the root of the free-style positioning laser emitter 2 is freely hinged, so that it can always maintain a vertical state during operation under the action of its own gravity. Furthermore, the laser rangefinder 7 is used to measure and obtain distance data, and the laser rangefinder 7 has its own gateway (not shown in the figure), through which the laser rangefinder 7 transmits the laser distance measurement data to a data analyzer or other data receiving and processing equipment.

[0029] like Figure 2As shown, the above-mentioned light-sensing receiving component is horizontally installed and arranged on the ground at the center of the bottom of the iron tower. The light-sensing receiving component includes a fixed plate 13 and a circular light-sensing receiver 8 and a data analyzer 9 fixed thereon. The fixed plate is horizontally installed on the ground at the center of the bottom of the iron tower. The circular light-sensing receiver is used to receive the laser beam emitted by the positioning laser transmitter, and the circular light-sensing receiver is electrically connected to the data analyzer. Further, the circular light-sensing receiver is composed of photosensitive elements, which can receive the laser beam in real time and read the movement information of the laser beam. The circular light-sensing receiver transmits and saves the received and read laser beam data to the data analyzer. The deformation displacement and other parameters of the transmission tower can be obtained through the position change of the laser beam. In addition, the distance measured by the above-mentioned laser rangefinder combined with the displacement of the laser beam can be used to calculate and obtain the inclination angle of the transmission tower in different directions in real time.

[0030] Furthermore, the data analyzer includes a data acquisition module and a data processing module, wherein the data acquisition module is used to collect and receive data (including laser beam data received and transmitted by the circular light-sensing receiver, and laser ranging data transmitted by the laser rangefinder 7 through the gateway, etc.), and the data processing module is used to perform calculations and processing based on the collected data to generate parameter change data such as the tower inclination angle and displacement; the staff can directly read the parameter change data based on the data analyzer to clarify the parameter change situation. The above-mentioned data analyzer is an existing device, which uses a controller chip to realize data collection and processing, etc. Furthermore, the data analyzer has its own gateway or is electrically connected to the gateway, and the staff can read the data remotely through the gateway, and reading the data is simple and convenient.

[0031] Specifically, when the displacement change monitoring device at the top of the power transmission tower is initially installed, the initial state data is recorded, the vertical distance between the fixed positioning laser transmitter, the free positioning laser transmitter and the circular light-sensitive receiver is L0, the center of the circular light-sensitive receiver is recorded as D0, and the laser beams emitted by the fixed positioning laser transmitter and the free positioning laser transmitter are both aimed at the center of the circular light-sensitive receiver D0; when working, the real-time distance between the fixed positioning laser transmitter and the circular light-sensitive receiver is L GS , the real-time distance between the freestyle positioning laser transmitter and the circular light-sensing receiver is L ZS , the L GS , L ZS The distance data are obtained by the pulse method of laser rangefinder, that is, the laser rangefinder emits a beam or a series of short pulse laser beams to the target when working, and the photoelectric element (photosensitive receiver) receives the laser beam reflected by the target. The timer measures the time from the emission to the reception of the laser beam, and calculates the distance from the observer to the target. The moving point of the laser beam emitted by the fixed positioning laser transmitter on the circular photosensitive receiver is D GS, the moving point of the laser beam emitted by the freestyle positioning laser transmitter on the circular photosensitive receiver is D ZS , the center D0 and D GS The straight-line distance between G , the center D0 and D ZS The straight-line distance between Z The data acquired above is transmitted to the data analyzer, and the data analyzer processes and calculates according to the received data. ZS The difference between L0 and L1 can be used to obtain the real-time settlement of the transmission tower. The tower tilt angle θ is calculated; by recording D over a period of time GS The displacement data can be used to obtain the displacement time history curve, thereby obtaining parameter data such as vibration amplitude, displacement change, acceleration and frequency. The parameter data obtained by the above calculations are displayed on the display screen of the data analyzer.

[0032] Furthermore, the above-mentioned laser positioning component also includes a power magnetic fixing plate 6 and a first solar panel power supply 5. The first solar panel power supply 5 is fixedly installed on the power magnetic fixing plate 6. The power magnetic fixing plate 6 is magnetically fixed on the iron tower. The first solar panel power supply 5 is electrically connected to the positioning laser transmitter and the laser rangefinder 7 through the first wire 4, which is used to power the entire laser positioning component.

[0033] Furthermore, the above-mentioned light-sensing receiving component also includes a second solar panel power supply 10, which is electrically connected to the data analyzer and the circular light-sensing receiver through a second wire 11, and is used to power the entire light-sensing receiving component; the second solar panel power supply 10 is fixedly installed on a fixed plate 13, and a plurality of fixing holes are provided on the fixed plate 13, and the fixed plate is horizontally fixed on the ground by rivets passing through the fixing holes. In addition, a horizontal bubble 12 is provided in the circular light-sensing receiver 8, and the fixed plate is adjusted to keep it horizontal through the horizontal bubble to ensure the accuracy of subsequent measurements.

[0034] The specific working process of the utility model is as follows:

[0035] When the displacement change monitoring device at the top of a power transmission tower is initially installed, the center point of the top of the tower is first determined, and the positioning laser transmitter and the laser rangefinder are fixedly installed at the center point through a magnetic fixing plate, and the positioning laser transmitter and the laser rangefinder are connected to a first solar panel power supply (the first solar panel power supply is fixedly installed on a power magnetic fixing plate, and the power magnetic fixing plate is magnetically fixed on the tower) through a first wire, and the positioning laser transmitter and the laser rangefinder are powered on to start working;

[0036] Secondly, install the light receiving device, fix the circular light receiver, data analyzer, and the second solar panel power supply on the fixed plate with bolts, and then fix the fixed plate to the center ground of the bottom of the tower through the fixing holes set on the four corners with rivets. During the fixing process, adjust the position so that the laser beam emitted by the positioning laser transmitter is aligned with the center D0 of the circular light receiver, and adjust the fixed plate through the level bubble to keep it level; after adjusting the position, turn on the power supply data analyzer, and the light receiving component starts to work;

[0037] During operation, the laser rangefinder transmits the distance measurement data to the data analyzer through the gateway, and the circular light-sensing receiver collects data and transmits it to the data analyzer. The data analyzer has a built-in large-capacity storage device that can store long-term monitoring data. The data analyzer calculates and processes the collected data to generate and display the tower inclination, displacement and other parameter change data; further, the data analyzer comes with a gateway, or the data analyzer is electrically connected to the gateway, and the gateway is used to realize long-distance data reading. The data is transmitted to the remote client through the gateway, and the staff can remotely obtain the final displacement monitoring results through the remote client. Among them, the freestyle positioning laser transmitter always remains in a vertical state, and its monitoring data L ZS The difference between the initial data L0 can accurately reflect the settlement of the transmission tower; if the transmission tower is tilted, the fixed positioning laser transmitter will accurately reflect the tilt. The tower inclination angle θ is calculated; through the moving point D GS The real-time vibration and deformation displacement of the tower can be obtained by the movement of the tower, and the displacement time history curve can be obtained, which can be used for subsequent data analysis.

[0038] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A device for monitoring displacement changes of the top of a power transmission tower, characterized in that: It includes a laser positioning component and a light receiving component; The laser positioning component includes a magnetic fixing plate and a positioning laser transmitter and a laser rangefinder installed on its bottom surface; the magnetic fixing plate is a flat plate, and its top surface is magnetically fixed at the center of the top of the tower; the positioning laser transmitter includes a fixed positioning laser transmitter vertically fixed to the magnetic fixing plate and a free positioning laser transmitter freely articulated to the magnetic fixing plate; The photosensitive receiving component includes a fixed plate and a circular photosensitive receiver fixedly mounted thereon, and a data analyzer; the fixed plate is horizontally mounted on the ground at the center of the bottom of the tower, the circular photosensitive receiver is used to receive the laser beam emitted by the positioning laser transmitter, and the circular photosensitive receiver is electrically connected to the data analyzer.

2. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 1, characterized in that: The laser positioning component also includes a power supply magnetic fixing plate and a first solar panel power supply, wherein the first solar panel power supply is fixedly mounted on the power supply magnetic fixing plate, and the power supply magnetic fixing plate is magnetically fixed on the iron tower.

3. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 2, characterized in that: The first solar panel power supply is electrically connected to the positioning laser transmitter and the laser rangefinder through a first wire.

4. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 1, characterized in that: The laser rangefinder has a built-in gateway, and the laser rangefinder transmits data with the data analyzer via the gateway.

5. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 1, characterized in that: The light receiving component also includes a gateway, and the gateway is electrically connected to the data analyzer.

6. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 1, characterized in that: The light-sensing receiving component also includes a second solar panel power supply, and the second solar panel power supply is electrically connected to the data analyzer and the circular light-sensing receiver through a second wire.

7. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 6, characterized in that: The second solar panel power source is fixedly installed on the fixed flat plate.

8. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 1, characterized in that: A horizontal bubble is arranged in the circular light-sensing receiver.

9. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 1, characterized in that: The fixing plate is provided with a plurality of fixing holes, and the fixing plate is horizontally fixed on the ground by passing rivets through the fixing holes.

10. The device for monitoring displacement changes of the top of a power transmission tower of a power grid as claimed in claim 1, characterized in that: When the power grid transmission tower top displacement change monitoring device is initially installed, the laser beams emitted by the fixed positioning laser transmitter and the free positioning laser transmitter are both aimed at the center of the circular light-sensitive receiver.

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