Spacer for high voltage transmission lines

Abstract

The utility model relates to a spacer for high-voltage transmission line relates to high-voltage transmission line protection hardware technical field, contain the insulating frame of polygonal structure, and the corner end of insulating frame all is installed for the clamp jaw used with cable connection, and the corner end and the side line midpoint in insulating frame all are equipped with hinged seat, and at least one hinged seat installs the energy consumption device that can adjust prestress, the utility model has strong adaptability, can be in different positions according to actual working condition automatic adjustment energy consumption device's prestress, provides more accurate energy dissipation control, has improved the effectiveness of high-voltage transmission line galloping suppression, through the working characteristic of optimization energy consumption device, has reduced the mechanical wear and tear and fatigue damage due to the galloping, has prolonged the service life of high-voltage transmission line and related accessories, has reduced the maintenance cost, has adopted the assembly such as limiting stud, locking nut, has guaranteed that the maximum deflection angle of energy consumption device obtains effective restriction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage transmission line protection fittings, in particular to a spacer for high-voltage transmission lines. BACKGROUND

[0002] During the operation of high-voltage transmission lines, due to factors such as wind and icing, conductor galloping often occurs. This galloping not only aggravates the mechanical wear of the conductor, but also may lead to problems such as fitting fatigue fracture and insulator damage, seriously affecting the safety and stability of the power transmission system. Although the traditional spacer can fix the distance between the split conductors to some extent, it has limitations in suppressing conductor galloping.

[0003] In order to solve the above problems, various improvement schemes have been proposed in the prior art, such as using energy consumption devices with prestress adjustment function to enhance the inhibitory effect of the spacer on conductor vibration. However, these schemes usually do not fully consider the problem of amplitude difference at different positions, i.e. the amplitude is larger in the middle position of the two towers and smaller near the towers. Therefore, when designing a spacer that can adjust the prestress, how to flexibly adjust the parameters of the energy consumption device according to the different installation environments and positions becomes the key to improving its galloping suppression performance.

[0004] Chinese patent (publication number: CN208908346U) discloses a split conductor anti-galloping device; the patent has two connecting plates fixed on the frame, a plurality of protruding columns are provided on the connecting plates, the protruding columns are connected with one end of the springs, the other end of the springs is connected with the weights, the weights are connected with the two connecting plates through the springs on both sides, and a plurality of weights are provided, the adjacent two weights are also connected through the springs; however, this patent also does not fully consider the problem of amplitude difference at different positions, and cannot further improve the performance of suppressing high-voltage transmission line galloping. SUMMARY

[0005] In order to overcome the deficiencies in the background art, the present application discloses a spacer for high-voltage transmission lines, which aims to reasonably configure the prestress setting of the energy consumption device, increase the prestress in the area with larger amplitude to quickly dissipate energy, and reduce the prestress in the area with smaller amplitude to enhance the response sensitivity to slight vibration, so as to more effectively prevent the galloping of high-voltage transmission lines from expanding.

[0006] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0007] A spacer for high-voltage transmission lines, comprising an insulating frame in a polygonal structure, and a clamping jaw for connecting with a cable is installed at each corner end of the insulating frame; a hinge seat is provided at each corner end and midpoint of the side line in the insulating frame, and at least one hinge seat is provided with an energy consumption device capable of adjusting the prestress.

[0008] Preferably, the energy consumption device comprises a connecting seat hingedly connected with the hinged seat through a hinged shaft; the shaft body of the hinged shaft is sleeved with a torsion spring, so that the connecting seat is kept vertical; each end of the connecting seat is provided with a limiting assembly to limit the swing angle of the connecting seat; the bottom of the connecting seat is fixedly connected with a guide rod, the rod body of the guide rod is slidingly fitted with a weight, and each end of the guide rod corresponding to the weight is sleeved with a spring; the end of the guide rod corresponding to the spring away from the weight is threadedly connected with an adjusting nut for adjusting the height position of the weight and the prestress of the spring.

[0009] Preferably, the limiting assembly comprises a limiting stud threadedly connected with the connecting seat.

[0010] Preferably, the limiting stud is threadedly connected with a locking nut at the top and the bottom of the connecting seat.

[0011] Preferably, the limiting stud is provided with a bump ball head at one end of the hinged shaft.

[0012] Preferably, the clamping jaw is connected with the insulating frame through a universal hinged device.

[0013] Preferably, the universal hinged device comprises a connecting ball head and a connecting ball seat installed between the clamping jaw and the insulating frame, and the connecting ball head and the connecting ball seat are correspondingly connected in a universal manner.

[0014] Preferably, a reset spring is sleeved between the connecting ball head and the connecting ball seat.

[0015] Preferably, the connecting ball head is provided with a limiting boss for limiting the reset spring at one end of the connecting ball seat.

[0016] Preferably, the universal hinged device is adjustably connected with the insulating frame through an adjusting rod; the insulating frame is provided with a jack corresponding to the adjusting rod, and the rod body of the adjusting rod is provided with a plurality of positioning holes at intervals; one side of the insulating frame corresponding to the jack is provided with a limiting pin capable of being correspondingly inserted into the corresponding positioning hole, for limiting the movement range of the adjusting rod.

[0017] Due to the adoption of the technical scheme as described above, the present application has the following beneficial effects:

[0018] 1. The spacer for high-voltage transmission lines disclosed by the present application has strong adaptability, can automatically adjust the prestress of the energy consumption device according to the actual working conditions at different positions, provides more accurate energy dissipation control, and improves the effectiveness of the high-voltage transmission line galloping suppression.

[0019] 2. The protection device: by optimizing the working characteristics of the energy consumption device, the mechanical wear and fatigue damage caused by galloping are reduced, the service life of the high-voltage transmission line and related accessories is prolonged, and the maintenance cost is reduced.

[0020] 3. Improved safety: Enhanced overall ability to withstand adverse weather conditions, ensuring the safety and reliability of power transmission, especially for long-distance high-voltage transmission lines.

[0021] 4. Structural stability: The use of limit studs, locking nuts and other components ensures that the maximum deflection angle of the energy consumption device is effectively limited, avoiding the risk of accidental collisions and ensuring the structural stability of the entire spacer.

[0022] 5. Easy maintenance: All key components such as hinged shafts, torsion springs, weights, springs and adjusting nuts are designed to facilitate disassembly and replacement, making it easy for on-site maintenance personnel to perform routine maintenance work. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0024] Figure 2 is a schematic diagram of the structure of the present application;

[0025] Figure 3 is a schematic diagram of the structure of the energy consumption device;

[0026] Figure 4 is a schematic diagram of the structure of the universal hinge device;

[0027] Figure 5 is a schematic diagram of the structure of the adjusting rod.

[0028] In the figure: 1, insulating frame; 2, clamping jaw; 3, hinged seat; 4, energy consumption device; 4-1, connecting seat; 4-2, hinged shaft; 4-3, guide rod; 4-4, weight; 4-5, spring; 4-6, adjusting nut; 4-7, limit stud; 4-8, locking nut; 4-9, anti-collision ball head; 5, universal hinge device; 5-1, connecting ball head; 5-2, connecting ball seat; 5-3, return spring; 5-4, limit boss; 6, adjusting rod; 7, positioning hole; 8, limit pin. DETAILED DESCRIPTION

[0029] The present application can be explained in detail by the following examples, and the purpose of disclosing the present application is to protect all technical improvements within the scope of the present application. In the description of the present application, it should be understood that the orientation or position relationship indicated by terms such as "up", "down", "front", "back", "left", "right" and the like only corresponds to the drawings of the present application, and is not intended to indicate or imply that the device or element referred to must have a particular orientation.

[0030] Example 1, combined with the attached Figures 1-3A spacer bar for high-voltage transmission lines includes an insulating frame 1 with a polygonal structure. Each corner of the insulating frame 1 is equipped with a clamp 2 for connecting to a cable. Both the insulating frame 1 and the clamp 2 are existing structures. The insulating frame 1 is used to fix the spacing between the split conductors of the high-voltage transmission line, and its shape is usually quadrilateral, hexagonal or octagonal.

[0031] Hinged seats 3 are provided at the corners and midpoints of the edges of the insulating frame 1, and at least one hinged seat is equipped with an energy dissipation device 4 that can adjust the prestress. The prestress of the energy dissipation device 4 can be adjusted according to the installation environment and location.

[0032] Typically, high-voltage transmission lines experience larger amplitude vibrations in the middle position between two towers because this location experiences the least constraint; while closer to the towers, the amplitude is relatively smaller due to the influence of the tower structure. Therefore, increasing prestress in areas with larger amplitudes helps to quickly dissipate energy, while reducing prestress in areas with smaller amplitudes enhances the sensitivity to vibration response, ensuring effective energy absorption even under slight vibrations, preventing the amplification of high-voltage transmission line galloping, and thus effectively suppressing high-voltage transmission line galloping.

[0033] As attached Figure 3 As shown, the energy dissipation device 4 includes a connecting seat 4-1, which is connected to the hinge seat 3 via a hinge shaft 4-2. A torsion spring 4-5 is fitted onto the hinge shaft 4-2 to keep the connecting seat 4-1 vertical. When the high-voltage transmission line swings left and right, the torsion spring 4-5 will dissipate energy through deformation, suppressing the left and right swing of the line.

[0034] To limit the sway angle of the entire energy-consuming device 4 and prevent accidental collisions with the insulating frame 1 or high-voltage transmission lines, limiting components are provided at both ends of the connecting base 4-1. Each limiting component includes a limiting stud 4-7 threadedly connected to the connecting base 4-1. The limiting stud 4-7 contacts the insulating frame 1 to limit the maximum sway angle of the energy-consuming device 4. By adjusting the distance between the limiting stud 4-7 and the insulating frame 1, the maximum amplitude of the entire energy-consuming device 4 can be controlled.

[0035] In addition, locking nuts 4-8 are provided at the top and bottom of the limiting stud 4-7 to secure the limiting stud 4-7 and prevent it from loosening. The end of the limiting stud 4-7 near the hinge shaft 4-2 is equipped with an anti-collision ball head 4-9, which is made of soft materials such as nylon or rubber to protect the insulating frame 1 from damage.

[0036] The bottom of the connecting seat 4-1 is fixedly connected with a guide rod 4-3, and a heavy hammer 4-4 is slidingly fitted on the guide rod 4-3, and each side of the heavy hammer 4-4 is provided with a spring 4-5. When the high-voltage transmission line appears up and down vibration, the heavy hammer 4-4 and the two springs 4-5 cooperate to dissipate vibration energy and suppress the up and down movement of the line.

[0037] The two ends of the guide rod 4-3 are threadedly connected with adjusting nuts 4-6, which are used to adjust the position of the heavy hammer 4-4 and the pre-tightening force of the springs 4-5. By changing the relative distance between the two adjusting nuts 4-6, the pre-tightening force of the springs 4-5 can be adjusted: the smaller the distance, the greater the pre-tightening force; otherwise, the smaller the pre-tightening force. At the same time, by adjusting the position of the two adjusting nuts 4-6 on the guide rod 4-3, the height of the heavy hammer 4-4 can be adjusted, thereby affecting the bending moment borne by the connecting seat 4-1. The lower the position of the heavy hammer 4-4, the greater the bending moment exerted on the connecting seat 4-1 when it swings left and right, so that the energy consumption device 4 is more sensitive to left and right swings.

[0038] In order to more effectively suppress the galloping of the high-voltage transmission line, according to the different installation positions of the energy consumption device 4, the following adjustments are made: the energy consumption device 4 located at the middle position of the two towers should adjust the position of the heavy hammer 4-4 on its guide rod 4-3 to be higher, and increase the pre-tightening force of the springs 4-5 at both ends of the heavy hammer; for the energy consumption device 4 close to the tower, the position of the heavy hammer 4-4 on the guide rod 4-3 should be lowered, and the pre-tightening force of the springs 4-5 should be reduced. Such configuration can provide appropriate resistance to vibration at different positions, optimizing the overall performance.

[0039] Embodiment 2, in combination with the accompanying drawings Figure 1 , 2 and 4, a spacer for high-voltage transmission lines, which is different from embodiment 1 in that on the basis of embodiment 1, the clamping jaw 2 is flexibly and stably connected with the insulating frame 1 through the universal hinge device 5. This design allows the clamping jaw 2 to adapt to complex spatial torsion during the galloping of the high-voltage transmission line, effectively preventing damage caused by excessive torsion or improper stress.

[0040] The universal hinge device 5 includes a connecting ball head 5-1 and a connecting ball seat 5-2 installed between the clamping jaw 2 and the insulating frame 1. The connecting ball head 5-1 and the connecting ball seat 5-2 achieve precise universal connection, allowing the clamping jaw 2 to move freely in multiple directions while maintaining stable connection with the insulating frame 1. This design not only improves the flexibility of the system, but also enhances its response capability to different vibration modes.

[0041] To limit the random swing between the connecting ball head 5-1 and the connecting ball seat 5-2, a reset spring 5-3 is sleeved between the two. Through the pushing effect, the reset spring 5-3 can keep the connecting ball head 5-1 and the connecting ball seat 5-2 in a relatively stable position without external force. Specifically, when the external vibration disappears, the reset spring 5-3 will automatically return the connecting ball head 5-1 to the initial position, thereby avoiding the wear or fatigue damage caused by long-term random motion.

[0042] In addition, the connecting ball head 5-1 is provided with a limiting boss 5-4 corresponding to one end of the connecting ball seat 5-2, which is used to limit the movement of the reset spring 5-3 along the radial direction of the connecting ball head 5-1. The design of the limiting boss 5-4 ensures that the reset spring 5-3 is always in the correct working position and will not be offset or fall off due to external factors, further ensuring the reliability and safety of the whole.

[0043] Through the above-mentioned design of the universal hinge device 5, not only can it flexibly cope with various challenges brought by the high-voltage transmission line galloping, but also can effectively protect the jaw 2 from damage, ensuring the safe and stable operation of the power transmission system, and providing a more reliable solution for high-voltage transmission lines.

[0044] Embodiment 3, in combination with the accompanying drawings Figure 1 、 2 and 5, a spacer for high-voltage transmission lines, based on embodiment 1 or 2, the universal hinge device 5 is connected to the insulating frame 1 through the adjusting rod 6. This design allows the relative position between the jaw 2 and the insulating frame 1 to be adjusted flexibly according to the specific spacing between the split conductors in the high-voltage transmission line, thereby significantly improving the application range in different application scenarios.

[0045] Specifically, the insulating frame 1 is provided with a socket that matches the adjusting rod 6, ensuring that the two can be connected stably. The adjusting rod 6 has a plurality of positioning holes 7 evenly distributed on its shaft, and the design of these positioning holes allows the operator to choose the most suitable installation position according to actual needs. At the same time, on the side of the insulating frame 1 corresponding to the socket, a limiting pin 8 is equipped, which can precisely dock with any one of the positioning holes 7 on the adjusting rod 6 to limit the movement range of the adjusting rod 6, ensuring that it remains stable and immobile in the working state.

[0046] Through such a design, not only is the precise control of the position of the jaw 2 achieved, but also the adaptability and reliability of the whole are enhanced. When facing different high-voltage transmission line configurations, the operator only needs to simply adjust the position of the adjusting rod 6 and lock it with the limiting pin 8, which can quickly complete the installation or reconfiguration without the need for complex tools or professional skills. This convenient adjustment method provides great convenience for on-site construction, and also ensures that the insulating frame 1 can effectively function under various conditions.

[0047] The present application is not limited to the details of the foregoing exemplary embodiments and can be practiced with modification and alteration within the scope and spirit of the present application. Accordingly, the specification is to be regarded as illustrative rather than restrictive.

Claims

1. A spacer for high voltage transmission lines, comprising an insulating frame (1) in polygonal shape, each corner end of which is fitted with a jaw (2) for connection with the cable; characterized in that: Also contain: Hinge seat (3), the corner end and the midline of the edge line in the insulating frame (1) are provided with the hinge seat (3); Energy consumption device (4), at least one of the hinge seats (3) is provided with the energy consumption device, and the energy consumption device can adjust the prestress to adapt to the vibration condition of different positions, so that the conductor galloping is more effectively inhibited; The energy consumption device (4) contains: Connecting seat (4-1), the connecting seat (4-1) is hingedly connected with the hinge seat (3) through a hinge shaft (4-2); Torsion spring (4-5), the torsion spring is sleeved on the shaft body of the hinge shaft (4-2), so that the connecting seat (4-1) remains vertical and dissipates energy when swinging left and right; Limiting assembly, the connecting seat (4-1) is provided with a limiting assembly at both ends, which limits the deflection angle of the connecting seat (4-1); Guide rod (4-3), the guide rod is fixedly connected to the bottom of the connecting seat (4-1), the guide rod (4-3) is slidably connected with a weight (4-4), and a spring (4-5) is sleeved at both ends of the guide rod (4-3) corresponding to the weight (4-4); Adjusting nut (4-6), one end of the guide rod (4-3) corresponding to the spring (4-5) away from the weight (4-4) is threadedly connected with the adjusting nut (4-6), which is used for adjusting the height position of the weight (4-4) and the prestress of the spring (4-5); The limiting assembly contains a limiting stud (4-7) corresponding to the connecting seat (4-1) and threadedly connected therewith; The top and bottom of the limiting stud (4-7) corresponding to the connecting seat (4-1) are both threadedly connected with locking nuts (4-8) for fixing the position of the limiting stud and preventing it from loosening.

2. The spacer for high voltage transmission lines according to claim 1, characterized in that: One end of the limiting stud (4-7) corresponding to the hinge shaft (4-2) is provided with a soft material made anti-collision ball head (4-9) to protect the insulating frame (1) from being damaged.

3. The spacer for high voltage transmission lines according to claim 1, characterized in that: The clamping jaw (2) is connected with the insulating frame (1) through the universal hinge device (5) to realize universal connection, so that the clamping jaw (2) can move freely in multiple directions while maintaining stable connection with the insulating frame.

4. The spacer for high voltage transmission lines according to claim 3, characterized in that: The universal hinge device (5) contains: a connecting ball head (5-1) and a connecting ball seat (5-2) installed between the clamping jaw (2) and the insulating frame (1), the connecting ball head (5-1) and the connecting ball seat (5-2) are correspondingly connected, allowing the clamping jaw (2) to move freely within a certain range.

5. The spacer for high voltage power transmission lines according to claim 4, characterized in that: A reset spring (5-3) is sleeved between the connecting ball head (5-1) and the connecting ball seat (5-2), which promotes the connecting ball head (5-1) to return to the initial position when not subjected to external force.

6. The spacer for high voltage power transmission lines according to claim 5, characterized in that: The connecting ball head (5-1) is provided with a limiting boss (5-4) at one end corresponding to the connecting ball seat (5-2) for limiting the reset spring (5-3), preventing the reset spring (5-3) from moving radially along the connecting ball head.

7. Spacer for high voltage power lines according to any of claims 3-6, characterized in that: The universal hinge device (5) is adjustably connected with the insulating frame (1) through an adjusting rod (6); the insulating frame (1) is provided with a corresponding and matched insertion hole with the adjusting rod (6), and the adjusting rod (6) is provided with a plurality of positioning holes (7) at intervals; one side of the corresponding insertion hole of the insulating frame (1) is provided with a limiting pin (8) which can be correspondingly inserted into the corresponding positioning hole (7) and used for limiting the moving range of the adjusting rod (6).

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