CN202363851U - Anti-galloping device of overhead transmission line - Google Patents
Anti-galloping device of overhead transmission line Download PDFInfo
- Publication number
- CN202363851U CN202363851U CN 201120523281 CN201120523281U CN202363851U CN 202363851 U CN202363851 U CN 202363851U CN 201120523281 CN201120523281 CN 201120523281 CN 201120523281 U CN201120523281 U CN 201120523281U CN 202363851 U CN202363851 U CN 202363851U
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- transmission line
- galloping
- overhead transmission
- lead
- dance
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Abstract
The utility model discloses an anti-galloping device of an overhead transmission line. The anti-galloping device of the overhead transmission line comprises a fixing mechanism and a damping anti-galloping mechanism; the fixing mechanism is vertically arranged on a lead of the overhead transmission line, and the fixing mechanism is provided with the damping anti-galloping mechanism; and when the lead gallops, the damping anti-galloping mechanism performs vertical damped motion along a direction reverse to the galloping direction of the lead. According to the utility model, the anti-galloping device with the damping anti-galloping mechanism is mounted on the lead so as to form a vertical damping anti-galloping device, and the anti-galloping device comprises a damping part, and a heavy punch which is fixed on the elastic damping part and can move up and down. The frequency and the amplitude of vertical motion of the heavy punch are reverse to the galloping of the lead, therefore, the frequency of the initial galloping of the lead is disturbed, the energy generated by galloping of the lead is canceled out, and the energy of the lead in the initial stage of galloping is eliminated.
Description
Technical field
The utility model relates to the power technology field, particularly a kind of anti-dance device of overhead transmission line.
Background technology
Wave is that guide line produces low frequency (self-excited vibration of 0.1Hz～3Hz), large amplitude (can reach more than the 10m), its formation depends primarily on three aspect factor, i.e. the structure of the excitation of icing, wind, circuit and parameter.The harm of waving generation is many-sided, and the lighter is taken place to dodge and ironed, trips, and gold utensil takes place weight person and insulator damages, disconnected strand of lead, broken string, and shaft tower bolt looseness, even tower cause great power grid accident.
When transmission line is in the meteorological condition that is prone to wave, very easily forms one-sided icing and make the shape of cross section of lead become the wing of sub-elliptical in conductive line surfaces.When meeting strong wind more than 45 ° of wind direction and circuit horizontal sextant angle, whole shelves lead will produce integral body and reverse and swing under the effect of powerful wind-force and the mechanical stress of lead own.Conductors this reverses and swings along with the effect that continues wind-force and strengthen gradually; Slowly form oval-shaped movement locus; When reversing aggravation and causing lead to carry out bob significantly with lower frequency, promptly during conductor galloping, lead to rock phenomenon not fairly obvious; The state of whole shelves lead shows as directed undulation, and average per minute is about 20 times.The conductor galloping amplitude maximum at whole shelves line-sag place can reach ± 0.1 to ± 1.0 times sag height.When conductor galloping begins to weaken, lead will progressively revert to from bob and reverse and swing, and weaken gradually until stopping.Because the amplitude of waving is big, and swing is arranged, therefore a last very long causes easily that alternate flashover, gold utensil damage, cause line tripping to have a power failure or cause the burn lead, forget about it shaft tower, serious accident such as lead fractures, thereby cause heavy economic losses.Under many circumstances, because the duration of conductor galloping is long, even the reclosing success, also tripping operation once more easily is short-circuited, and as the transmission of electricity accident, it is a serious accident.
Publication number is the monitoring that has realized conductor galloping amplitude, frequency, half-wave number in the utility model patent " a kind of overhead transmission line galloping monitoring device and system " of CN201134152.But this scheme can only monitor parameters such as the frequency of waving, amplitude, half-wave number, and concrete anti-dance scheme does not have and monitor parameters such as the frequency of waving, amplitude, half-wave number to combine.Monitoring system is an electronic system, the back is installed owing to high pressure on the line, and maintenance and replacing resistance to overturning complicated, system is relatively poor.
Therefore, at present also not to anti-effective solution of waving.The circuit of anti-dance device is installed in recent years, still suffers the infringement of transmission line galloping, domestic example is also very general.
The utility model content
To the defective of prior art, the utility model embodiment provides a kind of anti-dance device of overhead transmission line, offsets the energy of conductor galloping through the damping anti-dance mechanism that is made up of elastic damping parts and weight.
To achieve these goals, the utility model embodiment provides a kind of anti-dance device of overhead transmission line, and the anti-dance device of said overhead transmission line comprises: fixed mechanism and damping anti-dance mechanism; Said fixed mechanism vertically is installed on the lead of said overhead transmission line, and said fixed mechanism is provided with said damping anti-dance mechanism; Said damping anti-dance mechanism when said conductor galloping, carries out becoming with said conductor galloping backward vertical damped motion.
Described damping anti-dance mechanism comprises: elastic damping parts and weight; The two ends of said elastic damping parts are individually fixed in the two ends up and down of said fixed mechanism; Said weight is fixed on the said elastic damping parts, when said conductor galloping, under the elastic force effect of said elastic damping parts, carries out becoming with said conductor galloping backward vertical damped motion.
Said weight is fixed in the medium position of said elastic damping parts.
In the left and right sides of said fixed mechanism said elastic damping parts are set respectively, said weight all is fixedly connected with the elastic damping parts of the left and right sides.
Said weight is sheathed on the outside of said fixed mechanism, moves up and down along said fixed mechanism.
Said elastic damping parts are elastic threads or spring chain.
The upper end of said fixed mechanism and the joint place of said lead are provided with antivibrator, and the lower end of said fixed mechanism is provided with stopping means.
The beneficial effect of the utility model is: the utility model is through installing the anti-dance device with damping anti-dance mechanism on lead; Constitute vertical damping anti-dance device, the weight that this anti-dance device has the elastic damping parts and is fixed in said elastic damping parts and can moves up and down.The weight vertical motion frequently rule and amplitude and lead wave contrary direction motion, thereby the interference initial stage frequency rule of waving is offset the energy that conductor galloping produces, and the energy of lead in the starting stage of waving eliminated.
Description of drawings
Fig. 1 is the mechanical structure left view of the utility model embodiment overhead transmission line anti-dance device;
Fig. 2 is the mechanical structure front view of the utility model embodiment overhead transmission line anti-dance device;
Fig. 3 is the mechanical structure top view of the utility model embodiment overhead transmission line anti-dance device;
Fig. 4 is the spring chain partial enlarged drawing of the utility model embodiment overhead transmission line anti-dance device.
Description of reference numerals:
Fixed mechanism 2;
Stopping means 5.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer; To combine the accompanying drawing among the utility model embodiment below; Technical scheme among the utility model embodiment is carried out clear, intactly description; Obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model claim protection.
The utility model provides a kind of equipment that suppresses overhead transmission line galloping in the electric power system; Energy comes from transmission line itself; Be similar to the principle of automobile shock; Elasticity chain type weight structure absorbs the real time kinematics acceleration of conductor galloping, offsets the energy of waving of lead, reaches the purpose that suppresses conductor galloping.
Particularly, the utility model has the damping anti-dance mechanism that elastic damping parts (like spring chain or elastic threads etc.) drive the weight structure through on lead, installing, and constitutes vertical damping anti-dance device.The weight vertical motion frequently rule and amplitude and lead wave contrary direction motion, thereby the interference initial stage frequency rule of waving discharges and offsets the energy that conductor galloping produces, and the energy of lead in the starting stage of waving eliminated.
The utility model embodiment overhead transmission line anti-dance device mainly comprises: fixed mechanism, spring chain and weight; Fixed mechanism is fixed on whole anti-dance device on the lead; Spring chain connects weight; Entire mechanism is utilized the principle of spring damping, waves energy through the variation absorption of weight center of gravity relative position, realizes suppressing the purpose of conductor galloping.
Fig. 1 is the mechanical structure left view of the utility model embodiment overhead transmission line anti-dance device; Fig. 2 is the mechanical structure front view of the utility model embodiment overhead transmission line anti-dance device; Fig. 3 is the mechanical structure top view of the utility model embodiment overhead transmission line anti-dance device; Fig. 4 is the spring chain partial enlarged drawing of the utility model embodiment overhead transmission line anti-dance device.
With Fig. 2 is example, and the anti-dance device of the overhead transmission line of present embodiment comprises: fixed mechanism 2 and damping anti-dance mechanism; Fixed mechanism 2 vertically is installed on the lead 1 of said overhead transmission line, and said fixed mechanism 2 is provided with said damping anti-dance mechanism; Said damping anti-dance mechanism when said conductor galloping, carries out becoming with said conductor galloping backward vertical damped motion.
Described damping anti-dance mechanism comprises: elastic damping parts (like the spring chain 3 of Fig. 2) and weight 4; The two ends of said elastic damping parts are individually fixed in the two ends up and down of said fixed mechanism 2; Said weight 4 is fixed on the said elastic damping parts, when said conductor galloping, under the elastic force effect of said elastic damping parts, carries out becoming with said conductor galloping backward vertical damped motion.
As shown in Figure 2, preferably, said weight 4 is fixed in the medium position of said elastic damping parts, can make things convenient for weight 4 to carry out moving up and down of vertical direction like this.
As shown in Figure 2, preferably, be respectively arranged with said elastic damping parts in the left and right sides of said fixed mechanism 1, said weight 4 all is fixedly connected with the elastic damping parts of the left and right sides.
As shown in Figure 2, preferably, said weight 4 is sheathed on the outside of said fixed mechanism 1, moves up and down along said fixed mechanism 1.Tie down weight through the elasticity chain, make the position of centre of gravity of weight to rise or to descend, reach the purpose that suppresses conductor galloping along fixed mechanism.
Alternatively, the elastic damping parts of the utility model can be elastic threads or spring chain.
Alternatively, the joint place of the upper end of said fixed mechanism 1 and said lead 1 is provided with the antivibrator (not shown), makes anti-dance device fix with respect to lead location.The lower end of said fixed mechanism 1 is provided with stopping means 5, in motion process, breaks away from said fixed mechanism to prevent said weight.
Conductor galloping is the key factor that threatens the transmission line safe operation.The harm of waving generation is many-sided, such as: tripping operation, lead electric arc burn, gold utensil damage, disconnected strand of lead, broken string, the tower etc. that falls.The utility model constitutes vertical damping anti-dance device through the anti-dance device with damping anti-dance mechanism is installed on lead, the weight that this anti-dance device has the elastic damping parts and is fixed in said elastic damping parts and can moves up and down.The weight vertical motion frequently rule and amplitude and lead wave contrary direction motion; Thereby the frequency rule that the interference initial stage waves; Offset the energy that conductor galloping produces; The energy of lead in the starting stage of waving eliminated, can avoid waving the great economic loss and the social influence that cause, ensure the operation of electricity net safety stable.
Above embodiment is only in order to the technical scheme of explanation the utility model embodiment, but not to its restriction; Although the utility model embodiment has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of each embodiment technical scheme of essence disengaging the utility model embodiment of relevant art scheme.
Claims (7)
1. the anti-dance device of an overhead transmission line is characterized in that, the anti-dance device of said overhead transmission line comprises: fixed mechanism and damping anti-dance mechanism;
Said fixed mechanism vertically is installed on the lead of said overhead transmission line, and said fixed mechanism is provided with said damping anti-dance mechanism;
Said damping anti-dance mechanism when said conductor galloping, carries out becoming with said conductor galloping backward vertical damped motion.
2. the anti-dance device of overhead transmission line according to claim 1 is characterized in that, described damping anti-dance mechanism comprises: elastic damping parts and weight;
The two ends of said elastic damping parts are individually fixed in the two ends up and down of said fixed mechanism;
Said weight is fixed on the said elastic damping parts, when said conductor galloping, under the elastic force effect of said elastic damping parts, carries out becoming with said conductor galloping backward vertical damped motion.
3. the anti-dance device of overhead transmission line according to claim 2 is characterized in that, said weight is fixed in the medium position of said elastic damping parts.
4. the anti-dance device of overhead transmission line according to claim 2 is characterized in that, is respectively arranged with said elastic damping parts in the left and right sides of said fixed mechanism, and said weight all is fixedly connected with the elastic damping parts of the left and right sides.
5. the anti-dance device of overhead transmission line according to claim 4 is characterized in that, said weight is sheathed on the outside of said fixed mechanism, moves up and down along said fixed mechanism.
6. the anti-dance device of overhead transmission line according to claim 2 is characterized in that, said elastic damping parts are elastic threads or spring chain.
7. the anti-dance device of overhead transmission line according to claim 1 is characterized in that, the upper end of said fixed mechanism and the joint place of said lead are provided with antivibrator, and the lower end of said fixed mechanism is provided with stopping means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120523281 CN202363851U (en) | 2011-12-14 | 2011-12-14 | Anti-galloping device of overhead transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120523281 CN202363851U (en) | 2011-12-14 | 2011-12-14 | Anti-galloping device of overhead transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202363851U true CN202363851U (en) | 2012-08-01 |
Family
ID=46575007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120523281 Expired - Lifetime CN202363851U (en) | 2011-12-14 | 2011-12-14 | Anti-galloping device of overhead transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202363851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912062A (en) * | 2019-11-30 | 2020-03-24 | 国网福建省电力有限公司 | Vibration damper for preventing transmission line from vibrating substantially |
-
2011
- 2011-12-14 CN CN 201120523281 patent/CN202363851U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912062A (en) * | 2019-11-30 | 2020-03-24 | 国网福建省电力有限公司 | Vibration damper for preventing transmission line from vibrating substantially |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |