CN202326901U - Damping insulating device - Google Patents
Damping insulating device Download PDFInfo
- Publication number
- CN202326901U CN202326901U CN2011204725789U CN201120472578U CN202326901U CN 202326901 U CN202326901 U CN 202326901U CN 2011204725789 U CN2011204725789 U CN 2011204725789U CN 201120472578 U CN201120472578 U CN 201120472578U CN 202326901 U CN202326901 U CN 202326901U
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- damping
- buffer
- piston
- housing
- coil
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Abstract
The utility model discloses a damping insulating device comprising a plurality of parachute trays connected in a vertical direction. The lower ends of the parachute trays are connected with wired clamps and at least one buffer is connected among the plurality of parachute trays. The buffer comprises a spring, an elastic buffer and a magnetorheological fluid buffer. The damping insulating device provided by the utility model can be used for effectively protecting power transmission towers by additionally arranging the buffers among the parachute trays to overcome the alternating load of transmission conductors.
Description
Technical field
The utility model relates to the insulator field that electric power is carried, particularly a kind of damping seal.
Background technique
According to the statistics of national grid department, by the end of the year 2009, existing 110 (66) KV of China and above ultra-high-tension power transmission line are counted roughly 553382 kilometers, and the conservative estimation of electric power pylon quantity has 1,800,000, and is increasing enormous amount rapidly.In recent years, natural disasteies such as violent storm take place again and again, and therefore many electric power pylons damage even collapse, and bring about great losses to electrical network.
Summary of the invention
The utility model technical problem to be solved provides a kind of damping seal, can avoid electric power pylon and damage because of the whipping of transmission pressure.
For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of damping seal, comprise a plurality of umbrella disks that connect up and down, and the umbrella disk lower end is connected with wire clamp, also is connected with at least one buffer between a plurality of umbrella disks.
Described buffer is spring, elastic buffer or magnetic current liquid buffer.
In the described elastic buffer, piston is installed in the housing, piston is provided with a plurality of damping holes.
In the described magnetic current liquid buffer, piston is installed in the housing, piston is provided with at least one damping hole, is filled with magnetic current liquid in the housing, is provided with at least one group of coil near the damping hole, and the pilot of coil passes from piston rod.
Described a plurality of damping hole is uniformly distributed with on circumference, organizes outer ring and/or inner ring that coil is positioned at the circumference of a plurality of damping holes compositions more.
Described each damping hole is provided with the coil with the damping hole concentric outward.
Described each damping hole has crooked path.
Also be provided with the Returnning spring that is used to make piston reset.
Also be provided with buffer layer in the rodless cavity of housing.
Through carefully searching reason; The reason that electric power pylon damages is that the insulator that uses on China's electric power pylon at present all is the structure of not damping, as shown in Figure 7; Directly transmission pressure is connected with electric power pylon, electric power pylon has directly just been passed in the vibration that lead produces.And the span between the electric power pylon is generally more than 500 meters, and the lead between two towers is just as a huge rope skipping, lead to get rid of the vibration that pendulum produces be very fierce, the stress alternation of its generation is to bring the destructive main cause of damaging to electric power pylon.Especially during the break-in in the whipping process, instantaneous load produces synergistic effect, and its collapsing force is huge.
Therefore in the utility model, adopted and on insulator, added energy absorber to overcome stress alternation, the stress alternation of especially instantaneous stack is brought destructive the damage to electric power pylon.
A kind of damping seal that the utility model provides has overcome the stress alternation that transmission pressure produces through between umbrella disk, adding buffer, has protected electric power pylon effectively.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the overall structure schematic representation of the utility model.
Fig. 2 is the sectional structure chart of buffer in the utility model.
Fig. 3 is the cross-sectional view at magnetic current liquid buffering piston position in the utility model.
Fig. 4 is the cross-sectional view of the piston region of magnetic current liquid buffer optimization in the utility model.
Fig. 5 is the cross-sectional view of the piston region that magnetic current liquid buffer is further optimized in the utility model.
Fig. 6 is the structure sectional view of elastic buffer in the utility model.
Fig. 7 is the scheme of installation of insulator in the existing technology.
Embodiment
Embodiment 1:
In Fig. 1, a kind of damping seal comprises a plurality of umbrella disks 1 that connect up and down, and umbrella disk 1 lower end is connected with wire clamp 3, also is connected with at least one buffer 2 between a plurality of umbrella disks 1.
Described buffer 2 is spring or elastic buffer.The spring (not shown) that is provided with separately can reduce stress alternation effectively, in the time of especially can overcoming in the whipping process break-in, and the synergistic effect that instantaneous load produces.
In the scheme of optimizing, as shown in Figure 6, in the elastic buffer of employing, piston 27 is installed in the housing 23, piston 27 is provided with a plurality of damping holes 25.Also be provided with and be used to Returnning spring that piston 27 is resetted.In this example, the combination of elastic element such as spring and damper because the damping curve of the two is different, thereby has further reduced vibration.Returnning spring can be arranged on rod chamber, as shown in Figure 6, also can be arranged on rodless cavity, perhaps is arranged on rod chamber and rodless cavity simultaneously, perhaps is arranged on the outside of housing 23.In the rodless cavity of housing 23, also be provided with buffer layer 28, be used to prevent piston 27 direct and housing 23 collisions, have buffer function simultaneously.
Embodiment 2:
In Fig. 1, a kind of damping seal comprises a plurality of umbrella disks 1 that connect up and down, and umbrella disk 1 lower end is connected with wire clamp 3, also is connected with at least one buffer 2 between a plurality of umbrella disks 1.
Described buffer 2 is a magnetic current liquid buffer.
As shown in Figure 2, in the described magnetic current liquid buffer buffers device, piston 27 is installed in the housing 23; Piston 27 is provided with at least one damping hole 25; Be filled with magnetic current liquid 24 in the housing 23, be provided with at least one group of coil 26 near the damping hole 25, the pilot 21 of coil 26 passes from piston rod 22.Magnetic current liquid is that magnetizable soft iron particles is suspended in the suspension liquid in the hydrocarbon solution, changes the flowability of magnetic current liquid through the size of current that changes coil 26, thereby changes the damping constant of damper.Magnetic current liquid buffer can change the coil current size according to the Oscillation Amplitude size information (for example wind speed size) of high-voltage conducting wires, controls the cushioning ability of magnetic current liquid buffer, to adapt to the transmission pressure damping under the different situations.Can lead be got rid of the vibration of putting generation like this and fall, and not pass to electric power pylon, play the effect of protection electric power pylon through buffer " absorption ".
In the scheme of optimizing, described a plurality of damping holes 25 are uniformly distributed with on circumference, organize outer ring and/or inner ring that coil 26 is positioned at the circumference of a plurality of damping holes 25 compositions more.Shown in Fig. 3, Fig. 4, this structure is for ease of processing and installation.
In the scheme of further optimizing, be provided with coil 26 outside described each damping hole 25 with damping hole 25 concentrics.As shown in Figure 5.The usefulness of this structure is higher.
In the scheme of further optimizing again, described each damping hole 25 has crooked path, promptly each damping hole 25 no longer with parallel axes; But crooked, the shape of spiral for example, thus effectively increased the length of damping hole 25; Improved damping, not shown.Adopt this structure can effectively reduce the volume of buffer.
In the scheme of optimizing, also be provided with and be used to Returnning spring that piston 27 is resetted.Under the action of gravity of transmission pressure, piston 27 always is tending towards resting on the top of housing 23, and this state is the vibrational energy that is unfavorable for absorbing lead, and therefore to adopt the auxiliary middle part that makes piston 27 rest on housing 23 of Returnning spring be useful.In embodiment 1, Returnning spring can be arranged on rod chamber or rodless cavity, perhaps is arranged on rod chamber and rodless cavity simultaneously, perhaps is arranged on the outside of housing 23, and is not shown.
Also be provided with buffer layer 28 in the rodless cavity of housing 23.Be used to prevent piston 27 direct and housing 23 collisions, have buffer function simultaneously.
Claims (6)
1. damping seal; Comprise a plurality of umbrella disks (1) that connect up and down; Umbrella disk (1) lower end is connected with wire clamp (3); It is characterized in that: also be connected with at least one buffer (2) between a plurality of umbrella disks (1), described buffer (2) is spring, elastic buffer or magnetic current liquid buffer;
In the described elastic buffer, piston (27) is installed in the housing (23), piston (27) is provided with a plurality of damping holes (25);
In the described magnetic current liquid buffer; Piston (27) is installed in the housing (23); Piston (27) is provided with at least one damping hole (25); Be filled with magnetic current liquid (24) in the housing (23), be provided with at least one group of coil (26) near the damping hole (25), the pilot (21) of coil (26) passes from piston rod (22).
2. a kind of damping seal according to claim 1 is characterized in that: described a plurality of damping holes (25) are uniformly distributed with on circumference, organize outer ring and/or inner ring that coil (26) is positioned at the circumference of a plurality of damping holes (25) composition more.
3. a kind of damping seal according to claim 1 is characterized in that: be provided with the coil (26) with damping hole (25) concentric outside described each damping hole (25).
4. a kind of damping seal according to claim 1 is characterized in that: described each damping hole (25) has crooked path.
5. a kind of damping seal according to claim 1 is characterized in that: also be provided with and be used to Returnning spring that piston (27) is resetted.
6. a kind of damping seal according to claim 1 is characterized in that: also be provided with buffer layer (28) in the rodless cavity of housing (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204725789U CN202326901U (en) | 2011-11-24 | 2011-11-24 | Damping insulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204725789U CN202326901U (en) | 2011-11-24 | 2011-11-24 | Damping insulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202326901U true CN202326901U (en) | 2012-07-11 |
Family
ID=46438881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204725789U Expired - Fee Related CN202326901U (en) | 2011-11-24 | 2011-11-24 | Damping insulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202326901U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201629A (en) * | 2014-09-24 | 2014-12-10 | 国家电网公司 | Insulator string hanging point buffer method and insulator string hanging point connecting structure |
| CN110416954A (en) * | 2019-08-16 | 2019-11-05 | 国家电网有限公司 | A kind of iron tower of power transmission line waves damping device |
-
2011
- 2011-11-24 CN CN2011204725789U patent/CN202326901U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201629A (en) * | 2014-09-24 | 2014-12-10 | 国家电网公司 | Insulator string hanging point buffer method and insulator string hanging point connecting structure |
| CN110416954A (en) * | 2019-08-16 | 2019-11-05 | 国家电网有限公司 | A kind of iron tower of power transmission line waves damping device |
| CN110416954B (en) * | 2019-08-16 | 2024-07-23 | 国家电网有限公司 | Transmission line iron tower galloping damping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121124 |