CN110474275B - Transmission line cable damper and installation method thereof - Google Patents
Transmission line cable damper and installation method thereof Download PDFInfo
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- CN110474275B CN110474275B CN201910917269.9A CN201910917269A CN110474275B CN 110474275 B CN110474275 B CN 110474275B CN 201910917269 A CN201910917269 A CN 201910917269A CN 110474275 B CN110474275 B CN 110474275B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/14—Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
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Abstract
The invention discloses a transmission line cable shock absorber and an installation method thereof, wherein the shock absorber comprises a hollow sphere and a solid sphere positioned in the hollow sphere, a gap is arranged on the surface of the hollow sphere, a cable connecting ring is respectively arranged on the outer surfaces of the hollow sphere and the solid sphere, and the cable connecting ring of the solid sphere is opposite to the gap; the surface of the hollow sphere is provided with a through hole which is opposite to the cable connecting ring on the hollow sphere, and a cable channel is arranged in the solid sphere; the surface of the solid sphere is provided with a plurality of bulges, the surface of one side of each bulge, which is far away from the center direction of the solid sphere, is a curved surface matched with the inner wall of the hollow sphere, and the curved surface is attached to the inner wall of the hollow sphere; the hollow ball body and the bulge are both made of rigid materials. The invention is used for solving the problems that the shock absorber in the prior art can only reduce the tension of the cable and cannot play an effective protection effect on the condition that the cable is seriously twisted in severe weather, and the purpose of improving the protection strength of the overhead cable when the overhead cable is twisted under the action of external force is realized.
Description
Technical Field
The invention relates to the field of cable shock absorption, in particular to a transmission line cable shock absorber and an installation method thereof.
Background
The cable is usually composed of several wires, is an important component in the process of power transmission, and is a guarantee for stability and reliability of power transmission. The cable is pulled by the tension towers at two sides and is easily damaged or even torn off under the action of various wind, rain, hail and other external forces in the working process, and the normal power transmission is seriously disturbed. In the prior art, some shock absorbers are used for reducing the tension fluctuation of the cable and improving the stability of the cable in severe weather. However, the existing shock absorbers are all based on linear springs, the shock absorbers are pulled by cables from two ends, the internal springs are stretched or compressed, kinetic energy of the cables is consumed through elastic potential energy, and tension fluctuation of the cables is reduced. However, the existing shock absorber can only reduce tension on the cable, and cannot achieve an effective protection effect on a state that the cable is severely twisted in severe weather.
Disclosure of Invention
The invention aims to provide a transmission line cable damper and an installation method thereof, which are used for solving the problems that the damper in the prior art can only reduce tension on a cable and cannot effectively protect the cable from being twisted seriously in severe weather, and the purpose of improving the protection strength of the overhead cable when the overhead cable is twisted under the action of external force is realized.
The invention is realized by the following technical scheme:
a power transmission line cable damper comprises a hollow sphere and a solid sphere positioned in the hollow sphere, wherein a notch is formed in the surface of the hollow sphere, cable connecting rings are respectively arranged on the outer surfaces of the hollow sphere and the solid sphere, and the cable connecting rings of the solid sphere are opposite to the notch; the surface of the hollow sphere is provided with a through hole which is opposite to the cable connecting ring on the hollow sphere, and a cable channel is arranged in the solid sphere; the surface of the solid sphere is provided with a plurality of protrusions, the surface of one side of each protrusion, which is far away from the center of the solid sphere, is a curved surface matched with the inner wall of the hollow sphere, and the curved surface is attached to the inner wall of the hollow sphere; the hollow ball body and the bulge are both made of rigid materials.
The invention provides a transmission line cable shock absorber, aiming at the problems that the shock absorber in the prior art can only reduce tension on a cable and cannot play an effective protection effect on a state that the cable is severely twisted in severe weather. The shock attenuation principle of cable bumper shock absorber among the prior art all utilizes the kinetic energy that the kinetic energy of cable was consumed to the elastic potential energy of inside linear spring, and this application adopts the principle of complete difference: specifically, including hollow spheroid and solid spheroid, solid spheroid is located hollow spheroid, and consequently inevitable hollow spheroid's internal diameter is greater than solid spheroid's external diameter, and hollow spheroid surface sets up a breach, and the cable of being convenient for inserts, is connected with the cable connecting ring on solid spheroid surface from breach department. Set up cable channel in the solid spheroid, cable channel is used for the cable to pass, and the through-hole on hollow spheroid surface also is used for the cable to pass to through the structure of breach, cable channel, through-hole, make the cable pass this application smoothly. Solid spheroid surface sets up a plurality of archs, one side surface that solid spheroid centre of sphere direction was kept away from in the arch is the curved surface that matches with hollow spheroid inner wall, the curved surface pastes at hollow spheroid inner wall, therefore direct face contact between arch and the hollow spheroid, and because both all form by the rigid material preparation, frictional force between two rigid materials is very big, can convert a large amount of kinetic energy into internal energy, consequently comes quick consumption cable kinetic energy through frictional force. This application is used for when the power transmission cable is gone up, can connect the link in cable and strain insulator tower, also direct mount is in cable middle part optional position, receive exogenic action when twistinging reverse when the cable, can drive solid spheroid and hollow spheroid and produce relative rotation along with the torsion of cable, utilize great rigidity frictional force between arch and the hollow spheroid inner wall to convert kinetic energy into internal energy fast and consume, the realization is in bad weather, for example under the weather of hail heavy rain, the cable is pounded to when twistinging reverse by hail or rainwater, play the effect of effective protection to the cable. This application compares the shock attenuation principle completely different with current bumper shock absorber, has overcome the risk of breaking failure that traditional linear spring exists, stable in structure between two mutually supporting spheroids, and realizes the kinetic energy consumption through mutual frictional heating, does not have the problem of breaking failure. This application can the exclusive use, can cooperate current linear spring's bumper shock absorber used jointly.
Furthermore, the ball valve also comprises a plurality of elastic pieces positioned between the hollow ball body and the solid ball body, wherein one end of each elastic piece is fixed on the inner wall of the hollow ball body, and the other end of each elastic piece is fixed on the outer wall of the solid ball body. The elastic component mainly plays the reset action in this scheme, can reset by oneself after hollow spheroid rotates relatively with solid spheroid of being convenient for, avoids the cable to constantly twist reverse the winding.
Furthermore, a bulge is arranged between every two adjacent elastic pieces.
Further, the elastic member is a torsion spring. Preferably, the axis of the torsion spring is along the radial direction of the hollow sphere, so that the torsion spring can assist in damping besides the resetting function.
Furthermore, the hollow sphere and the bulge are both made of stainless steel. The stainless steel material has high strength and great mutual frictional resistance, and can ensure the full consumption of the cable kinetic energy.
Further, the protrusion is integrally formed with the solid sphere.
Furthermore, the maximum central angle corresponding to the notch is 60-80 degrees. Provide abundant angle of torsion for the cable, prevent simultaneously that solid spheroid from droing.
Furthermore, the hollow sphere is of a two-petal type split structure, and the two petals are fixedly connected through bolts. The structure is convenient to install and reduces the difficulty of the construction process.
A method for installing a transmission line cable damper comprises the following steps:
(a) welding one end of the elastic piece on the outer surface of the solid sphere, and then loading the solid sphere into the hollow sphere to enable the curved surface of each bulge far away from the sphere center of the solid sphere to be in contact with the inner wall of the hollow sphere;
(b) the cable is wound around the cable connecting ring on the solid sphere for at least one circle and then passes through the cable channel;
(c) the cable is led out of the cable channel, passes through the through hole, and is led away after bypassing at least one circle of cable connecting ring on the hollow sphere.
Furthermore, the hollow sphere is of a two-petal type split structure, in the step (a), firstly, a solid sphere with an elastic part is arranged in a petal hollow sphere, and the petal hollow sphere and the elastic part corresponding to the petal hollow sphere are welded; after that, the adhesive is applied to the end points of the remaining elastic elements and another hollow sphere is quickly mounted.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the transmission line cable damper and the installation method thereof, when the cable is twisted under the action of external force, the solid sphere and the hollow sphere can be driven to rotate relatively along with the twisting of the cable, kinetic energy is rapidly converted into internal energy for consumption by utilizing larger rigid friction force between the protrusion and the inner wall of the hollow sphere, and the effect of effectively protecting the cable is achieved when the cable is twisted by hail or rainwater in severe weather, such as the weather of hail and heavy rain.
2. Compared with the existing shock absorber, the shock absorption principle of the transmission line cable shock absorber and the installation method of the transmission line cable shock absorber are completely different, the risk of the snap failure of the traditional linear spring is overcome, the structure between the two mutually matched spheres is stable, the kinetic energy consumption is realized through mutual friction heat generation, and the snap failure problem is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a sectional view of embodiment 1 of the present invention;
fig. 2 is a sectional view of embodiment 2 of the present invention.
Reference numbers and corresponding part names in the drawings:
1-hollow sphere, 2-solid sphere, 3-cable connecting ring, 4-through hole, 5-cable channel, 6-bulge, 7-elastic piece, 8-bolt, 9-notch and 10-cable.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1, the transmission line cable shock absorber comprises a hollow sphere 1 and a solid sphere 2 positioned in the hollow sphere 1, wherein a gap 9 is formed in the surface of the hollow sphere 1, a cable connection ring 3 is respectively arranged on the outer surfaces of the hollow sphere 1 and the solid sphere 2, and the cable connection ring 3 of the solid sphere 2 is over against the gap 9; the surface of the hollow sphere 1 is provided with a through hole 4 which is opposite to the cable connecting ring 3 on the hollow sphere, and a cable channel 5 is arranged in the solid sphere 2; the surface of the solid sphere 2 is provided with a plurality of bulges 6, the surface of one side of each bulge 6, which is far away from the sphere center direction of the solid sphere 2, is a curved surface matched with the inner wall of the hollow sphere 1, and the curved surface is attached to the inner wall of the hollow sphere 1; the hollow sphere 1 and the bulge 6 are both made of rigid materials. The ball valve also comprises a plurality of elastic pieces 7 positioned between the hollow ball body 1 and the solid ball body 2, wherein one end of each elastic piece 7 is fixed on the inner wall of the hollow ball body 1, and the other end of each elastic piece 7 is fixed on the outer wall of the solid ball body 2.
Preferably, a protrusion 6 is disposed between each two adjacent elastic members 7. The elastic member 7 is a torsion spring.
The structure of breach, cable channel, through-hole makes the cable can pass smoothly through in this embodiment. When the cable receives the exogenic action to twist reverse, can drive solid spheroid and hollow spheroid and produce relative rotation along with the twisting reverse of cable, utilize great rigidity frictional force between arch and the hollow spheroid inner wall to convert kinetic energy into internal energy fast and consume, realize in bad weather, for example under the weather of hail heavy rain, the cable is pounded to when twisting by hail or rainwater, plays the effect of effective protection to the cable.
The damper can be used independently, and can also be preferably matched with the existing linear spring type damper to be used together.
Example 2:
as shown in fig. 2, in the transmission line cable shock absorber, based on embodiment 1, the hollow sphere 1 and the protrusion 6 are both made of stainless steel. The protrusion 6 is integrally formed with the solid sphere 2. The maximum central angle of the notch 9 is 77 °. The hollow sphere 1 is of a two-petal type split structure, and the two petals are fixedly connected through bolts 8.
The installation method of the embodiment comprises the following steps:
(a) welding one end of an elastic piece 7 on the outer surface of the solid sphere 2, and then installing the solid sphere 2 into the hollow sphere 1 to enable the curved surface of each bulge 6 far away from the sphere center of the solid sphere 2 to be in contact with the inner wall of the hollow sphere 1;
(b) the cable is wound around the cable connecting ring 3 on the solid sphere 2 for at least one circle and then passes through the cable channel 5;
(c) the cable is led out of the cable channel 5, passes through the through hole 4, and is led away after bypassing the cable connecting ring 3 on the hollow sphere 1 for at least one circle.
Preferably, the hollow sphere 1 is a two-petal type split structure, in the step (a), firstly, the solid sphere 2 with the elastic member 7 is installed in the one-petal hollow sphere 1, and the one-petal hollow sphere 1 and the corresponding elastic member 7 are welded; after which the remaining elastic element 7 is spot-glued and another hollow sphere 1 is quickly fitted.
Preferably, the adhesive is hot melt adhesive.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The transmission line cable shock absorber is characterized by comprising a hollow sphere (1) and a solid sphere (2) positioned in the hollow sphere (1), wherein a notch (9) is formed in the surface of the hollow sphere (1), cable connecting rings (3) are respectively arranged on the outer surfaces of the hollow sphere (1) and the solid sphere (2), and the cable connecting rings (3) of the solid sphere (2) are opposite to the notch (9); the surface of the hollow sphere (1) is provided with a through hole (4) which is opposite to the cable connecting ring (3) on the hollow sphere, and a cable channel (5) is arranged in the solid sphere (2); the surface of the solid sphere (2) is provided with a plurality of bulges (6), the surface of one side of each bulge (6) far away from the center of the solid sphere (2) is a curved surface matched with the inner wall of the hollow sphere (1), and the curved surface is attached to the inner wall of the hollow sphere (1); the hollow ball body (1) and the bulge (6) are made of rigid materials, and the notch (9), the cable channel (5) and the through hole (4) are used as channels for cables to penetrate through the shock absorber.
2. The transmission line cable shock absorber according to claim 1, further comprising a plurality of elastic members (7) positioned between the hollow sphere (1) and the solid sphere (2), wherein one end of each elastic member (7) is fixed on the inner wall of the hollow sphere (1), and the other end of each elastic member is fixed on the outer wall of the solid sphere (2).
3. The damper for power transmission line cables as claimed in claim 2, wherein a protrusion (6) is provided between each two adjacent elastic members (7).
4. The shock absorber according to claim 2, wherein the elastic member (7) is a torsion spring.
5. The damper for the cables of the power transmission line according to claim 1, wherein the hollow sphere (1) and the protrusion (6) are made of stainless steel.
6. Transmission line cable shock absorber according to claim 5, characterized in that the protrusion (6) is integrated with the solid sphere (2).
7. The damper for transmission line cables as claimed in claim 1, wherein the maximum central angle corresponding to the notch (9) is 60 ° -80 °.
8. The transmission line cable shock absorber of claim 1, wherein the hollow sphere (1) is a split structure with two lobes, and the two lobes are fixedly connected with each other through bolts (8).
9. The installation method of the transmission line cable damper as claimed in any one of claims 1 to 8, characterized by comprising the following steps:
(a) one end of the elastic piece (7) is welded on the outer surface of the solid sphere (2), and then the solid sphere (2) is arranged in the hollow sphere (1), so that the curved surface of each bulge (6) far away from the sphere center of the solid sphere (2) is contacted with the inner wall of the hollow sphere (1);
(b) the cable is wound around the cable connecting ring (3) on the solid sphere (2) for at least one circle and then passes through the cable channel (5);
(c) the cable is led out of the cable channel (5), passes through the through hole (4), and is led away after bypassing at least one circle of the cable connecting ring (3) on the hollow sphere (1).
10. The method for installing the transmission line cable damper according to claim 9, wherein the hollow sphere (1) is a two-petal type split structure, in the step (a), the solid sphere (2) with the elastic member (7) is firstly installed in the one-petal hollow sphere (1), and the petal hollow sphere (1) and the corresponding elastic member (7) are welded; then, adhesive is applied to the end of the remaining elastic element (7) and another hollow sphere (1) is quickly mounted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910917269.9A CN110474275B (en) | 2019-09-26 | 2019-09-26 | Transmission line cable damper and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917269.9A CN110474275B (en) | 2019-09-26 | 2019-09-26 | Transmission line cable damper and installation method thereof |
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| CN110474275A CN110474275A (en) | 2019-11-19 |
| CN110474275B true CN110474275B (en) | 2020-06-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271677B (en) * | 2020-09-25 | 2021-11-30 | 伍桂平 | Power line cable damper and extra-high voltage transmission network |
| CN112186689B (en) * | 2020-09-25 | 2022-02-11 | 山东得胜电力股份有限公司 | Anti-channeling damping device for power transmission line |
| CN112383014B (en) * | 2020-09-25 | 2022-05-13 | 陈永志 | Cable damping device |
| CN116537365B (en) * | 2023-05-16 | 2024-07-19 | 哈尔滨建创钢结构有限公司 | Welded hollow ball joint reinforced by spring support and construction method thereof |
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| KR101716083B1 (en) * | 2016-04-26 | 2017-03-14 | 한국전력공사 | Spacer damper for bundle conductor |
| CN106965846A (en) * | 2015-10-07 | 2017-07-21 | 奥迪股份公司 | Steering wheel for vehicle |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367744A (en) * | 1999-07-05 | 2002-09-04 | 动力发展有限公司 | Electromagnetic damper for vehicle suspension |
| CN1790850A (en) * | 2005-12-23 | 2006-06-21 | 唐校友 | Lead shockproof equipment |
| CN101359815A (en) * | 2008-10-07 | 2009-02-04 | 北京送变电公司 | Scooter for tension stringing |
| CN203398720U (en) * | 2013-08-08 | 2014-01-15 | 马鞍山市华能电力线路器材有限责任公司 | Circular shockproof hammer structure |
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