Test device for simulating wind vibration of power transmission line crossing high-speed railway
The wind flutter test device addresses the inefficiencies and safety concerns of traditional test environments by simulating high-speed railway wind conditions, facilitating controlled laboratory experiments for transmission lines, thereby reducing manual labor and operational risks.
Patent Information
- Application Number
- CN202420757351.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-12
AI Technical Summary
Traditional vibration test environments for overhead transmission lines crossing high-speed railways are open-loop systems, increasing manual labor and safety risks due to high-speed train interactions, which can cause wire breakages and operational hazards.
A wind flutter test device simulating high-speed railway conditions, equipped with a pulsating wind generator, monitoring equipment, and adjustable components to replicate train-induced wind and vibration effects, allowing controlled laboratory experiments.
Reduces labor and safety risks by simulating high-speed railway wind effects, enabling efficient collection of vibration and meteorological data for transmission lines, thus ensuring safer and more cost-effective testing.
Smart Images
Figure CN222166309U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of disaster prevention and reduction of power transmission lines in the electric power industry, and in particular to a wind flutter test device for simulating power transmission lines across high-speed railways. Background Art
[0002] With the promotion of high-speed railway construction, high-speed railways with speeds greater than 200km / h, highways with speeds of 60km-120km / h, and important transmission channels composed of several lines (hereinafter referred to as "three-span" sections), the "three-span" section transmission lines in these areas are particularly important. In recent years, due to the high speed of trains on high-speed railways, when passing through the bottom of high-voltage lines, the wind pulled by the high-speed railways blows towards the high-voltage lines, which will cause the high-voltage lines to vibrate, and then cause the high-voltage lines across the high-speed railways to have wire breakage failures in the crossing sections, which poses a great potential hazard. In order to ensure the normal operation of the railway and improve the power supply reliability of the transmission system, vibration monitoring equipment is usually installed on the transmission lines above the actually operating high-speed railways to monitor the vibration phenomenon of the high-voltage lines. Since the traditional vibration test environment of overhead transmission lines crossing high-speed railways is an open-loop system, the workload and danger of manual operation are increased, and there is a certain threat to the operation safety of the train. Therefore, a transmission line wind flutter test device simulating crossing high-speed railways is proposed to address the above problems. Utility Model Content
[0003] The technical problem to be solved by the utility model overcomes the existing defects and can effectively solve the problems in the background technology.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A wind flutter test device for simulating a power transmission line across a high-speed railway comprises an angle steel terminal tower, a communication device and a management-end computer, a conductor is provided on one side of the angle steel terminal tower, a cross arm is fixedly connected to the top outer side of the angle steel terminal tower, a monitoring device is fixedly connected to one end of the outer side of the conductor, a counterweight is movably connected to the center of the outer side of the conductor, a track is provided at the bottom of the conductor, an electric traction trolley is placed at the top of the track, a pulsating wind generator is rotatably connected to the top of the electric traction trolley via a rotating shaft, the communication device is located at the right end of the right angle steel terminal tower, and the management-end computer is located at the right end of the communication device.
[0006] As a further improvement of the utility model, the conductor end is clamped with a wire clamp, a hook is hung on the outside of the wire clamp, a lifting device is provided on the top of the hook, and the lifting device is fixedly connected to the cross arm, and the hook is fixedly connected to the cable of the lifting device.
[0007] As a further improvement of the present invention, a winch is fixedly connected to the bottom of the angle steel terminal tower, and the cable of the winch is fixedly connected to the track, an underground bearing is fixedly connected to the front end of the inner side of the track, a universal wheel is fixedly connected to the rear side of the bottom end of the track, and the angle between the track and the conductor is adjusted in the range of 45° to 90°.
[0008] As a further improvement of the utility model, one end of the outer side of the pulsating wind generator is rotatably connected to an electric push rod via a rotating shaft, and the other end of the electric push rod is rotatably connected to an electric traction trolley via a rotating shaft.
[0009] As a further improvement of the present invention, the pulsating wind generator uses a harmonic superposition method to simulate the pulsating wind on the transmission line when the high-speed railway passes through. The wind speed adjustment range of the pulsating wind generated by the pulsating wind generator is 0-20m / s, and the time range of the pulsating wind generated by the pulsating wind generator is 0-4s. The pulsating wind generator can simulate the wind speed and action time generated when a high-speed railway with 8 or 16 carriages passes through the transmission line at a speed range of 200km / h-300km / h.
[0010] As a further improvement of the present invention, the monitoring device is mainly composed of a vibration monitoring terminal and a micro-meteorological monitoring terminal. The vibration monitoring terminal in the monitoring device mainly includes an amplitude sensor and a frequency sensor. The micro-meteorological monitoring terminal in the monitoring device mainly includes a wind speed and direction sensor, a temperature and humidity sensor, an air volume detector and a digital barometer.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. A transmission line wind flutter test device simulating a high-speed railway, which is equipped with wires, hoisting equipment, monitoring equipment, pulsating wind generators, winches, tracks and electric traction trolleys. The high-speed railway pulsating wind generator is used to simulate the pulse wind and action time generated when a high-speed train passes through the transmission line. The wires are used to simulate the installation of wires of different specifications, different split numbers and different weights in the transmission line section. The height of the wire from the track is changed by the hoisting equipment. The track is pulled by the winch to simulate the angle between the wire and the track. The monitoring equipment completes the collection of wire vibration characteristics and micro-meteorological parameters around the wire, and the pipe is used to collect the wire vibration characteristics and micro-meteorological parameters around the wire. When the management computer completes the collection of vibration conditions and meteorological parameter object signals of the cross-high-speed railway transmission line and transmits them to the management computer in the form of optical fiber information through the communication equipment, it can realize wind flutter tests on different high-speed railway pulse winds, different angles between high-speed railways and conductors, conductors of different specifications and split numbers, and conductors under different operating conditions in the laboratory. By simulating the unique environment of the actual high-speed railway passing through the transmission line at high speed in the laboratory by one person, and then starting the electric traction trolley to conduct the transmission line wind flutter experiment, the labor and material costs are reduced, the workload and danger of manual operation are reduced, and the safety of high-speed railway operation is ensured. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.
[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a wind flutter test device for simulating a power transmission line across a high-speed railway.
[0015] Figure 2 This is a waveform characteristic diagram of pulsating wind of a wind flutter test device for a power transmission line simulating a cross-high-speed railway according to the utility model.
[0016] In the figure: 1. Angle steel terminal tower; 2. Cross arm; 3. Conductor; 4. Lifting equipment; 5. Hook; 6. Wire clamp; 7. Monitoring equipment; 8. Counterweight; 9. Track; 10. Winch; 11. Universal wheel; 12. Underground bearing; 13. Electric traction trolley; 14. Pulsating wind generator; 15. Electric push rod; 16. Communication equipment; 17. Management computer. DETAILED DESCRIPTION
[0017] The utility model is further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and cannot be understood as limitations on this patent. In order to better illustrate the specific implementation methods of the utility model, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific implementation methods in the utility model, all other specific implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0018] Example 1
[0019] like Figure 1-2 As shown, a transmission line wind flutter test device simulating crossing a high-speed railway comprises an angle steel terminal tower 1, a communication device 16 and a management-end computer 17, a conductor 3 is provided on one side of the angle steel terminal tower 1, a cross arm 2 is fixedly connected to the top outer side of the angle steel terminal tower 1, a monitoring device 7 is fixedly connected to one end of the outer side of the conductor 3, a counterweight block 8 is movably connected to the center of the outer side of the conductor 3, a track 9 is provided at the bottom of the conductor 3, an electric traction trolley 13 is placed on the top of the track 9, a pulsating wind generator 14 is rotatably connected to the top of the electric traction trolley 13 via a rotating shaft, the communication device 16 is located at the right end of the right angle steel terminal tower 1, and the management-end computer 17 is located at the right end of the communication device 16.
[0020] Example 2
[0021] like Figure 1 As shown, in order to solve the problem that it is inconvenient to simulate wires with different split numbers and pneumatic damping at different heights through the device, the end of the wire 3 is clamped with a wire clamp 6, and a hook 5 is hung on the outside of the wire clamp 6. A lifting device 4 is provided on the top of the hook 5, and the lifting device 4 is fixedly connected to the cross arm 2. The hook 5 is fixedly connected to the cable of the lifting device 4. By clamping the end of the wire 3 with a specified split number on the wire clamp 6, and then controlling the lifting of the wire 3 through the lifting device 4, it is convenient to simulate wires 3 with different split numbers and pneumatic damping at different heights through the device.
[0022] Example 3
[0023] like Figure 1As shown, in order to solve the problem of inconvenience in adjusting the angle between the track 9 and the conductor 3, a winch 10 is fixedly connected to the bottom of the angle steel terminal tower 1, and the cable of the winch 10 is fixedly connected to the track 9, and the front end of the inner side of the track 9 is fixedly connected to an underground bearing 12, and the rear side of the bottom end of the track 9 is fixedly connected to a universal wheel 11. The angle between the track 9 and the conductor 3 can be adjusted in the range of 45° to 90°. By controlling the winches 10 on both sides to retract and release their own cables, the track 9 is further pulled to rotate around the underground bearing 12, which facilitates the adjustment of the angle between the track 9 and the conductor 3.
[0024] Example 4
[0025] like Figure 1 As shown, in order to solve the problem of inconvenience in adjusting the angle of the pulsating wind generator 14, one end of the outer side of the pulsating wind generator 14 is rotatably connected to an electric push rod 15 via a rotating shaft, and the other end of the electric push rod 15 is rotatably connected to the electric traction trolley 13 via a rotating shaft. By controlling the electric push rod 15 to contract, the pulsating wind generator 14 is further pushed and pulled, which facilitates the adjustment of the angle of the pulsating wind generator 14.
[0026] Example 5
[0027] like Figure 1 As shown, in order to solve the problem of inconvenience in collecting the vibration characteristics of the conductor 3 and the micro-meteorological parameters around the conductor 3, the monitoring device 7 is mainly composed of a vibration monitoring terminal and a micro-meteorological monitoring terminal. The vibration monitoring terminal in the monitoring device 7 mainly includes an amplitude sensor and a frequency sensor. The micro-meteorological monitoring terminal in the monitoring device 7 mainly includes a wind speed and direction sensor, a temperature and humidity sensor, an air volume detector and a digital barometer. By arranging the monitoring device 7 composed of an amplitude sensor, a frequency sensor, a wind speed and direction sensor, a temperature and humidity sensor, an air volume detector and a digital barometer on the outside of the conductor 3, it is convenient to collect the vibration characteristics of the conductor 3 and the micro-meteorological parameters around the conductor 3.
[0028] In this embodiment, when monitoring the vibration of the conductor 3 when the high-speed railway passes through the transmission line at high speed, the pulsating wind generator 14 is first controlled and adjusted to simulate the pulse wind and action time generated when the high-speed train passes through the transmission line, and then the transmission line section is simulated to install conductors 3 of different specifications, different split numbers, and different counterweights. At this time, it is necessary to set a counterweight block 8 of a specified weight on the outside of the conductor 3, and then clamp the two ends of the conductor 3 on the wire clamp 6 on the outside of the hook 5, and then control the lifting equipment 4 to retract and release the cable to further change the height of the conductor 3 from the track 9. After adjusting the height of the high conductor 3, the winches 10 on the left and right sides are controlled to retract and release the cables, thereby pulling the track 9, so that the track 9 rotates around the underground bearing 12, simulating the conductor 3. and the angle between the track 9; after completing the above operations, control the electric push rod 15 to retract to adjust the angle of the pulsating wind generator 14, and then start the device to make the electric traction trolley 13 with the pulsating wind generator 14 move on the track 9 to perform a wind flutter experiment. At this time, the monitoring equipment 7 will collect the flutter characteristics of the conductor 3 and the micro-meteorological parameters around the conductor 3, and the management-end computer 17 will collect the flutter conditions and meteorological parameter object signals of the cross-high-speed railway transmission line, and send them to the management-end computer 17 through the communication equipment 16 in the form of optical fiber information, thereby realizing wind flutter tests on different high-speed rail pulse winds, different angles between the high-speed rail and the conductor 3, different specifications and split numbers of conductors 3, and conductors 3 under different operating conditions in the laboratory.
[0029] The above is a preferred implementation mode of the utility model. The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Technical personnel in this industry should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A transmission line wind flutter test device simulating a high-speed railway, comprising an angle steel terminal tower (1), a communication device (16) and a management computer (17), characterized in that: A conductor (3) is provided on one side of the angle steel terminal tower (1); a cross arm (2) is fixedly connected to the top of the outer side of the angle steel terminal tower (1); a monitoring device (7) is fixedly connected to one end of the outer side of the conductor (3); a counterweight (8) is movably connected to the center of the outer side of the conductor (3); a track (9) is provided at the bottom of the conductor (3); an electric traction trolley (13) is placed at the top of the track (9); a pulsating wind generator (14) is rotatably connected to the top of the electric traction trolley (13) via a rotating shaft; the communication device (16) is located at the right end of the right angle steel terminal tower (1); and the management end computer (17) is located at the right end of the communication device (16).
2. The wind flutter test device for simulating a transmission line across a high-speed railway according to claim 1, characterized in that: The end of the conductor (3) is clamped with a wire clamp (6), a hook (5) is hung on the outside of the wire clamp (6), a lifting device (4) is provided at the top of the lifting hook (5), and the lifting device (4) is fixedly connected to the cross arm (2), and the lifting hook (5) is fixedly connected to the cable of the lifting device (4).
3. The wind flutter test device for simulating a transmission line across a high-speed railway according to claim 1, characterized in that: A winch (10) is fixedly connected to the bottom of the angle steel terminal tower (1), and a cable of the winch (10) is fixedly connected to a track (9). An underground bearing (12) is fixedly connected to the front end of the inner side of the track (9), and a universal wheel (11) is fixedly connected to the rear side of the bottom end of the track (9). The angle between the track (9) and the conductor (3) can be adjusted in the range of 45° to 90°.
4. The wind flutter test device for simulating a transmission line across a high-speed railway according to claim 1, characterized in that: One end of the outer side of the pulsating wind generator (14) is rotatably connected to an electric push rod (15) via a rotating shaft, and the other end of the electric push rod (15) is rotatably connected to an electric traction trolley (13) via a rotating shaft.
5. The wind flutter test device for simulating a transmission line across a high-speed railway according to claim 1, characterized in that: The pulsating wind generator (14) uses a harmonic superposition method to simulate the pulsating wind on the power transmission line when the high-speed railway passes through. The wind speed adjustment range of the pulsating wind generated by the pulsating wind generator (14) is 0-20m / s, and the time range of the pulsating wind generated by the pulsating wind generator (14) is 0-4s. The pulsating wind generator (14) can simulate the wind speed and action time generated when a high-speed railway with 8 carriages or 16 carriages passes through the power transmission line at a speed within the range of 200km / h-300km / h.
6. The wind flutter test device for simulating a transmission line across a high-speed railway according to claim 1, characterized in that: The monitoring device (7) is mainly composed of a vibration monitoring terminal and a micro-meteorological monitoring terminal. The vibration monitoring terminal in the monitoring device (7) mainly includes an amplitude sensor and a frequency sensor. The micro-meteorological monitoring terminal in the monitoring device (7) mainly includes a wind speed and direction sensor, a temperature and humidity sensor, an air volume detector and a digital barometer.