Aerial insulated cable capable of increasing capacity
By introducing dampers and shock-proof hammers into overhead insulated cables, combined with multi-size adaptable clamps, the problem of increased vibration strength of the cable after capacity increase is solved, and the safety of the transmission line is improved.
Patent Information
- Application Number
- CN202421213715.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing overhead cable capacity-enhancing structures become larger after capacity-enhancing, which are prone to vibration and dance, resulting in safety hazards such as cable fatigue, strand breakage, and wear of metal tools.
An overhead insulated cable structure including insulated cables, capacitance-enhancing cables, dampers and clamping parts is designed to reduce vibration strength through dampers and shock-proof hammers, and to achieve rapid on-demand capacity increase through multi-size adaptable clamping parts.
It effectively reduces the vibration strength of overhead insulated cables, improves the safety of transmission lines, and solves the problem of increased cable resistance after capacity increase.
Smart Images
Figure CN222814164U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of overhead insulated cables, in particular to an overhead insulated cable with expandable capacity. Background Art
[0002] Overhead cable (full name: overhead insulated cable) is an overhead conductor equipped with an insulating layer and a protective outer sheath. It is a special cable manufactured using a production process similar to that of cross-linked cables. It is a new way of transmitting electricity between overhead conductors and underground cables. Overhead cables are all single-core. According to their different structures, they can be divided into hard aluminum wire structure, hard drawn copper wire structure, aluminum alloy wire structure, steel core or carbon fiber core support structure, and self-supporting three-core composite structure (the wire core can be hard aluminum or hard copper wire), etc. They have the main characteristics of high power supply reliability, good power supply safety, convenient installation and maintenance, and reasonable economy.
[0003] With the continuous and rapid development of my country's economy, the demand for electric energy has also increased dramatically, and it is often necessary to increase the capacity of overhead cables.
[0004] However, the existing overhead cable capacity expansion installation structure usually only considers the number of expandable cables and the clamping firmness, ignoring the fact that the wind resistance of the overhead cables increases after the capacity expansion, making them more likely to vibrate and dance under the action of natural wind and artificial wind. The cumulative effect of long-term vibration can lead to fatigue breakage of overhead cables, wear of hardware, damage to insulators, damage to pole tower components, etc., which seriously threatens the safety of high-voltage transmission lines. Utility Model Content
[0005] In view of the problems raised in the above background technology, the utility model provides an overhead insulated cable with expandable capacity, which can reduce the vibration intensity of the overhead insulated cable and improve the safety of the transmission line.
[0006] To achieve the above-mentioned purpose, the utility model provides an overhead insulated cable with expandable capacity, comprising an insulated cable, an expandable cable, a damper and a plurality of clamping members, wherein the insulated cable is arranged in a first clamping member, the expandable cable is arranged in a second clamping member, and the two ends of the damper are respectively connected to the first clamping member and the second clamping member.
[0007] Preferably, in the above technical solution, the clamp comprises two semicircular rings and a rib plate, one end of the two semicircular rings is rotatably connected and the other end is detachably connected, the rib plate is arranged on the outer arc surface of the semicircular ring, and the end of the damper is connected to the rib plate.
[0008] Preferably, in the above technical solution, the rib plate is arranged in the middle of the outer arc surface of the semicircular ring, and the upper surface of the rib plate is perpendicular to the outer arc surface of the semicircular ring.
[0009] Preferably, in the above technical solution, the clamp also includes a plurality of groups of slide grooves and spring sheets, the slide grooves are arranged on the inner arc surface of the semicircular ring, one end of the spring sheet is fixedly installed in the slide groove, the other end of the spring sheet is slidably connected to the inner wall of the slide groove, and the middle part of the spring sheet protrudes from the inner arc surface of the semicircular ring.
[0010] Preferably, in the above technical solution, the slide groove is an arc-shaped groove, and the arc edge of the slide groove is parallel to the arc edge of the semicircular ring.
[0011] Preferably, in the above technical solution, the sliding directions of the spring sheets in two adjacent sliding grooves are opposite.
[0012] Preferably, in the above technical solution, a plurality of shock-absorbing hammers are provided on the outer surface of the clamp.
[0013] Preferably, in the above technical solution, the shock-absorbing hammer includes a fixing part, a steel strand and a hammer head, one end of the fixing part is connected to the outer surface of the clamp, the other end of the fixing part is connected to the middle part of the steel strand, the direction of the steel strand is parallel to the direction of the insulated cable, and the hammer head is arranged at both ends of the steel strand.
[0014] Preferably, in the above technical solution, the damper is a spring damper, and two ends of the spring damper are detachably connected to the first clamping member and the second clamping member respectively.
[0015] Preferably, in the above technical solution, the first clamping member and the second clamping member are connected via two spring dampers.
[0016] Compared with the existing technology, the utility model has the following beneficial effects:
[0017] 1. The expandable overhead insulated cable of the utility model comprises an insulated cable, an expansion cable, a damper and a plurality of clamps. The insulated cable is arranged in a first clamp, and the expansion cable is arranged in a second clamp. Both ends of the damper are respectively connected to the first clamp and the second clamp. When the insulated cable or the expansion cable vibrates with the wind, the spring damper can reduce the resonance amplitude of the first clamp and the second clamp, and can reduce the vibration intensity of the overhead insulated cable, thereby solving the common defects of the expansion structure of the overhead insulated cable.
[0018] 2. The utility model arranges a plurality of vibration-proof hammers on the outer surface of the clamp. When the insulated cable or the capacity-increasing cable vibrates with the wind, the vibration-proof hammers on the clamp will vibrate accordingly, which can convert the kinetic energy of the vibration of the insulated cable or the capacity-increasing cable into heat energy for consumption, effectively reducing the intensity of the vibration of the overhead insulated cable with the wind, and having a shock-absorbing and buffering function.
[0019] 3. In order to meet the needs of different numbers of capacity-increasing cables, the utility model sets a corresponding number of clamps according to the number of capacity-increasing cables, and uses a damper to fix the clamps of the capacity-increasing cables with the clamps of the insulated cables, thereby realizing the function of rapid on-demand capacity expansion; by setting the clamps as two semicircular rings, and arranging a plurality of groups of slide grooves and spring sheets on the inner arc surface of the semicircular rings, the outer surface of the spring sheet abuts against the outer surface of the insulated cable or the capacity-increasing cable, which is convenient for clamping and fixing cables of different sizes, thereby realizing the multi-size adaptability function of the clamps. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The utility model is a schematic diagram of the capacity-increasing structure of multiple cables of the capacity-increasing overhead insulated cable.
[0021] Figure 2 The utility model is a schematic diagram of the capacity-increasing structure of a single cable of the overhead insulated cable with expandable capacity.
[0022] Figure 3 It is a schematic structural diagram of the clamping member of the utility model in a disassembled state.
[0023] Figure 4 This is a schematic structural diagram of the installation state of the clamping member of the utility model.
[0024] Figure 5 This is a schematic diagram of the installation structure of the spring leaf of the utility model.
[0025] Among them, 1-insulated cable, 2-capacity-increasing cable, 3-damper, 4-clamp, 401-semicircle ring, 402-rib, 403-slide, 404-spring sheet, 405-slide column, 41-first clamp, 42-second clamp, 5-shock-proof hammer, 51-fixing part, 52-steel strand, 53-hammer, 6-bolt, 7-rotating shaft, 8-outer sheath. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "thick", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0028] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.
[0030] like Figure 1 , Figure 2 As shown, this embodiment discloses an overhead insulated cable with expandable capacity, comprising an insulated cable 1, an expanded cable 2, a damper 3, a clamp 4 and an anti-vibration hammer 5, wherein the insulated cable 1 is arranged in a first clamp 41, the expanded cable 2 is arranged in a second clamp 42, two ends of the damper 3 are respectively connected to the first clamp 41 and the second clamp 42, and a plurality of anti-vibration hammers 5 are arranged on the outer surface of the clamp 4.
[0031] Specifically, the damper 3 in this embodiment is a spring damper. In order to enhance the connection stability between the first clamp 41 and the second clamp 42, multiple spring dampers can be used for connection. The fixed ends of the multiple spring dampers are detachably connected to the outer surface of the first clamp 41, and the movable ends of the multiple spring dampers are detachably connected to the outer surface of the second clamp 42. It is worth noting that the spring damper is a device that dissipates motion energy by providing resistance to motion. This device is used in aerospace, aviation, military industry, guns, automobiles and other industries for vibration reduction and energy dissipation. The main parts of the spring damper include springs and dampers, wherein the spring is used to provide support and resilience, and the damper is used to reduce shock and prevent excessive vibration of the system.
[0032] It can be understood that in this embodiment, the first clamping member 41 and the second clamping member 42 are connected and fixed by a spring damper. When the insulated cable 1 or the capacity-increasing cable 2 vibrates with the wind, the first clamping member 41 or the second clamping member 42 will vibrate and transmit the vibration through the spring damper. The spring damper can reduce the resonance amplitude of the first clamping member 41 and the second clamping member 42, avoiding large-scale resonance of the insulated cable 1 and the capacity-increasing cable 2, solving the common defects of the overhead insulated cable capacity-increasing structure, and improving the safety of the transmission line.
[0033] Continue to refer Figure 3 , Figure 4 The clamping member 4 includes two semicircular rings 401 of the same structure, a rib plate 402, a slide groove 403 and a spring sheet 404, wherein one end of the two semicircular rings 401 is configured to be rotatably connected and the other end is configured to be detachably connected. In this embodiment, one end of the two semicircular rings 401 is connected by a rotating shaft 7, and the other end is fixedly connected by a bolt 6 when in use;
[0034] The rib plate 402 is arranged in the middle of the outer arc surface of the semicircular ring 401, and the upper and lower surfaces of the rib plate 402 are respectively perpendicular to the outer arc surface of the semicircular ring 401. The outer edge of the rib plate 402 can be set to a polygon or a circle. The upper and lower surfaces of the rib plate 402 have a plurality of through holes in a circumferential array. The shockproof hammer 5 is installed on the side of the rib plate 402, and a gap is left between the shockproof hammer 5 and the through hole of the rib plate 402. The end of the damper 3 is fixedly connected to the through hole of the rib plate 402 by a bolt 6. After the damper 3 is installed, it does not affect the use of the shockproof hammer 5.
[0035] A plurality of groups of slide grooves 403 and spring sheets 404 are provided on the inner arc surface of the semicircular ring 401. The slide grooves 403 are arranged in a circular array on the inner arc surface of the semicircular ring 401. The extension direction of the slide grooves 403 can be parallel to or perpendicular to the arc edge. The middle part of the spring sheet 404 protrudes from the opening edge of the slide groove 403.
[0036] Continue to refer Figure 5 The slide groove 403 in this embodiment is set as an arc-shaped groove, the bottom width of the arc-shaped groove is greater than its opening width, the arc edge of the slide groove 403 is parallel to the arc edge of the semicircular ring 401, and slide columns 405 are respectively provided at both ends of the spring sheet 404. The two ends of the spring sheet 404 are restricted inside the arc-shaped groove by the slide columns 405. The slide column 405 at one end of the spring sheet 404 is fixed to the end of the arc-shaped groove, and the slide column 405 at the other end of the spring sheet 404 is slidably connected to the inner wall of the arc-shaped groove. The middle part of the spring sheet 404 protrudes from the inner arc surface of the semicircular ring 401. When the spring sheet 404 is fully compressed into the interior of the arc-shaped groove, the two ends of the spring sheet 404 respectively abut against the two ends of the arc-shaped groove.
[0037] Furthermore, when the clamp 4 is used to clamp and fix the insulated cable 1 or the capacity-increasing cable 2, the outer surface of the spring sheet 404 abuts against the outer surface of the insulated cable 1 or the capacity-increasing cable 2. By arranging outer sheaths 8 of different thicknesses on the outer surfaces of the insulated cable 1 or the capacity-increasing cable 2, the outer sheath 8 can be set as an armor layer, so that the clamp 4 can clamp and fix cables of different sizes. By arranging multiple groups of slide grooves 403 and spring sheets 404 on the inner arc surface of the semicircular ring 401, and arranging the sliding directions of the spring sheets 404 in two adjacent slide grooves 403 to be opposite, when the spring sheet 404 is compressed, the combination of the two adjacent spring sheets 404 can provide a centripetal force, so that the insulated cable 1 or the capacity-increasing cable 2 can be maintained in the middle position of the clamp 4 after being subjected to elastic forces in multiple directions of the clamp 4.
[0038] like Figure 4 As shown, the shock-absorbing hammer 5 includes a fixing part 51, a steel strand 52 and a hammer head 53. One end of the fixing part 51 is connected to the outer surface of the clamp 4, and the other end of the fixing part 51 is connected to the middle of the steel strand 52. The direction of the steel strand 52 is parallel to the direction of the insulated cable 1, and the hammer head 53 is arranged at both ends of the steel strand 52.
[0039] It is worth noting that when the insulated cable 1 or the capacity-increasing cable 2 vibrates with the wind, the anti-vibration hammer 5 on the clamp 4 will vibrate accordingly, and the steel strand 52 will bend and deform. Through the friction between the strands of the steel strand 52, the kinetic energy of the vibration of the insulated cable 1 or the capacity-increasing cable 2 can be converted into heat energy and consumed, thereby effectively reducing the intensity of the vibration of the overhead insulated cable with the wind and improving the safety of the transmission line.
[0040] Thus, the functions of an overhead insulated cable with expandable capacity in this embodiment are as follows:
[0041] (1) Eliminate resonance function
[0042] By arranging a spring damper between the first clamp and the second clamp to connect them, when the insulated cable or the capacity-increasing cable vibrates with the wind, the spring damper can reduce the resonance amplitude of the first clamp and the second clamp, and has the function of eliminating resonance, thereby solving the common defects of the overhead insulated cable capacity-increasing structure.
[0043] (2) Shock absorption and buffering function
[0044] By arranging a number of shock-absorbing hammers on the outer surface of the clamp, the kinetic energy of the vibration of the insulated cable or the capacity-increasing cable can be converted into heat energy and consumed, effectively reducing the intensity of the vibration of the overhead insulated cable caused by wind, and having a shock-absorbing and buffering function.
[0045] (3) Multi-size adaptation function
[0046] By configuring the clamping member to be two semicircular rings and arranging a plurality of groups of slide grooves and spring sheets on the inner arc surface of the semicircular rings, the outer surface of the spring sheets abuts against the outer surface of the insulated cable or the capacity-increasing cable, thereby facilitating the clamping and fixing of cables of different sizes, thereby realizing the multi-size adaptability function of the clamping member.
[0047] (4) Centripetal clamping function
[0048] By arranging multiple groups of slide grooves and spring sheets on the inner arc surface of the semicircular ring, and arranging the sliding directions of the spring sheets in two adjacent slide grooves to be opposite, the insulated cable or the capacity-increasing cable is subjected to centripetal forces in multiple directions, and has an elastic centripetal clamping function, which can clamp and fix the insulated cable or the capacity-increasing cable in the middle position of the clamp.
[0049] (5) On-demand capacity expansion
[0050] The capacity-increasing function can be realized by setting a corresponding number of clamps according to the number of capacity-increasing cables and using a damper to fix the clamps of the capacity-increasing cables with the clamps of the insulated cables.
[0051] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.
Claims
1. An overhead insulated cable with expandable capacity, characterized in that: The invention comprises an insulated cable, a capacity-increasing cable, a damper and a plurality of clamping members, wherein the insulated cable is arranged in the first clamping member, the capacity-increasing cable is arranged in the second clamping member, and the two ends of the damper are respectively connected to the first clamping member and the second clamping member.
2. The expandable overhead insulated cable according to claim 1, characterized in that: The clamping member includes two semicircular rings and a rib plate, one end of the two semicircular rings is rotatably connected and the other end is detachably connected, the rib plate is arranged on the outer arc surface of the semicircular ring, and the end of the damper is connected to the rib plate.
3. The expandable overhead insulated cable according to claim 2, characterized in that: The rib plate is arranged at the middle part of the outer arc surface of the semicircular ring, and the upper surface of the rib plate is perpendicular to the outer arc surface of the semicircular ring.
4. The expandable overhead insulated cable according to claim 2, characterized in that: The clamp also includes a plurality of groups of slide grooves and spring sheets, wherein the slide grooves are arranged on the inner arc surface of the semicircular ring, one end of the spring sheet is fixedly installed in the slide groove, and the other end of the spring sheet is slidably connected to the inner wall of the slide groove, and the middle part of the spring sheet protrudes from the inner arc surface of the semicircular ring.
5. The expandable overhead insulated cable according to claim 4, characterized in that: The slide groove is an arc-shaped groove, and the arc edge of the slide groove is parallel to the arc edge of the semicircular ring.
6. The expandable overhead insulated cable according to claim 5, characterized in that: The sliding directions of the spring sheets in two adjacent sliding grooves are opposite.
7. The expandable overhead insulated cable according to claim 1, characterized in that: The outer surface of the clamp is provided with a plurality of shock-proof hammers.
8. The expandable overhead insulated cable according to claim 7, characterized in that: The shock-absorbing hammer includes a fixing, a steel strand and a hammer head, one end of the fixing is connected to the outer surface of the clamp, the other end of the fixing is connected to the middle of the steel strand, the direction of the steel strand is parallel to the direction of the insulated cable, and the hammer head is arranged at both ends of the steel strand.
9. The expandable overhead insulated cable according to claim 1, characterized in that: The damper is a spring damper, and two ends of the spring damper are detachably connected to the first clamping member and the second clamping member respectively.
10. The expandable overhead insulated cable according to claim 9, characterized in that: The first clamping member and the second clamping member are connected via two spring dampers.