CN109787177B - Protection device for reducing unbalanced tension of power transmission tower wire system - Google Patents
Protection device for reducing unbalanced tension of power transmission tower wire system Download PDFInfo
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- CN109787177B CN109787177B CN201910172703.5A CN201910172703A CN109787177B CN 109787177 B CN109787177 B CN 109787177B CN 201910172703 A CN201910172703 A CN 201910172703A CN 109787177 B CN109787177 B CN 109787177B
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Abstract
The invention belongs to the technical field of power equipment, and particularly relates to a protection device for reducing unbalanced tension of a power transmission tower line system. The protection device for reducing the unbalanced tension of the power transmission tower line system comprises a bracket, a buffer, a connecting piece and a breaking device; the buffer structure comprises two buffers, wherein the two buffers are arranged vertically, one end of each buffer is connected with a support, and the other end of each buffer is connected with a connecting piece; the buffer includes buffer body and extensible member, extensible member and buffer body sliding fit, through the rupture device between extensible member and the buffer body, perhaps the buffer passes through the rupture device and is connected or leg joint, when the rupture device breaks under the effect of external force, the extensible member slides for the buffer body to stretch out from this internal extension of buffer. When the transmission line breaks, the breaking device breaks, the telescopic piece stretches out and draws back from the buffer body, the influence of unbalanced tension on the power transmission tower is reduced, and the power transmission tower is prevented from collapsing due to the unbalanced tension.
Description
Technical Field
The invention belongs to the technical field of power equipment, and particularly relates to a protection device for reducing unbalanced tension of a power transmission tower line system.
Background
Ice attached to the power transmission line due to cold weather or the like melts and falls off when the temperature rises. In the falling process, the elastic potential energy accumulated by the leads can be converted into kinetic energy, so that the iced-off leads jump, not only can the leads collide with each other, but also the impact action generated by the jumping can amplify the stress of the leads, the hardware LA and the tower, and the components can be damaged. Furthermore, the ice coating shedding of all the conductors cannot be perfectly synchronized, which results in the transmission tower being subjected to longitudinal unbalanced tension due to uneven ice coating, which is one of the main causes of tower failure. Therefore, the ice coating falling off seriously threatens the normal operation of the power transmission line.
In conclusion, the power transmission tower is broken, and particularly, when ice-coated loads act on the power transmission tower, the line with a large span is broken, so that huge unbalanced tension can be generated in the line, and the safety of the power transmission tower is seriously threatened.
Disclosure of Invention
Technical problem to be solved
Aiming at the technical problem of unbalanced tension in the prior art, the invention provides a protection device for reducing the unbalanced tension of a power transmission tower line system.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
a protection device for reducing unbalanced tension of a power transmission tower line system comprises a bracket, a buffer, a connecting piece and a breaking device;
the buffer structure comprises two buffers, wherein the two buffers are arranged vertically, one end of each buffer is connected with a support, and the other end of each buffer is connected with a connecting piece;
the buffer includes buffer body and extensible member, extensible member and buffer body sliding fit, through the rupture device between extensible member and the buffer body, perhaps the buffer passes through the rupture device and is connected or leg joint, when the rupture device breaks under the effect of external force, the extensible member slides for the buffer body to stretch out from this internal extension of buffer.
Preferably, the buffer comprises a box body, a rope body and a blocking device,
the rope body is connected with the connecting piece through the through hole, the second end of the rope body is positioned in the accommodating cavity, the second end of the rope body is connected with the blocking device positioned in the accommodating cavity, and the size of the blocking device is larger than that of the through hole;
the second end of the box body is hinged with the support, and the first end of the box body is connected with the connecting piece through the breaking device.
Preferably, a friction ring is further fixedly arranged between the first end of the box body and the breaking device;
the breaking device and the friction ring are provided with through holes, and the first end of the rope body penetrates through the through holes in the breaking device and the friction ring and then is connected with the connecting piece.
Preferably, hold the intracavity and be provided with and separate the stick, separate the stick and hold the chamber and be close to the lateral wall of box second end and be connected, when the rope body is located and holds the intracavity, the rope body twines on separating the stick.
Preferably, the blocking means is of spherical configuration, the blocking means having a diameter greater than the diameter of the exit orifice.
Preferably, the buffer comprises a piston box body and a piston, the piston box body comprises an accommodating cavity, and a first end of the piston box body is provided with a protruding opening communicated with the accommodating cavity;
the piston comprises a piston rod and a limiting piece, the first end of the piston rod is positioned in the accommodating cavity, the second end of the piston rod penetrates through the extension opening and then is connected with the support, the first end of the piston rod is connected with the limiting piece, and the size of the limiting piece is larger than that of the extension opening;
the limiting piece is connected with the mounting surface of the accommodating cavity through the breaking device, and the mounting surface is a surface in the accommodating cavity, which is opposite to the extending opening;
the second end of the piston box body is connected with the connecting piece, and the second end of the piston rod is hinged with the support.
Preferably, the cross section of the limiting part is circular, and the cross section and the piston rod are of an integrated structure.
Preferably, the bracket is of an L-shaped structure and comprises a horizontal rod and a vertical rod, wherein one of the two buffers is connected with the horizontal rod, and the other buffer is connected with the vertical rod.
Preferably, the structural strength of the telescopic member is greater than the structural strength of the breaking device.
Preferably, the diameter of the breaking means at the middle position is smaller than the diameter of the two ends thereof.
(III) advantageous effects
The invention has the beneficial effects that: according to the protection device provided by the invention, when the transmission line is broken, the breaking device is broken under the action of the unbalanced tension of the transmission line, the telescopic piece is telescopic from the buffer body, the distance between the insulator and the power transmission tower is increased, the influence of the unbalanced tension on the power transmission tower is reduced, and the power transmission tower is prevented from collapsing due to the unbalanced tension. .
Drawings
Fig. 1 is a schematic structural diagram of a protection device for reducing unbalanced tension of a power transmission tower line system provided by the invention;
fig. 2 is a schematic diagram of a breaking device breaking of the protection device for unbalanced tension of a power transmission tower line system provided by the invention;
FIG. 3 is a schematic diagram of a two-position lead;
FIG. 4 is a graph showing the residual tension of a broken adjacent conductor versus insulator length;
figure 5 shows a graph of residual tension versus insulator length for different ice coating thicknesses.
[ description of reference ]
1: a support; 2: a buffer; 3: a connecting member; 4: a breaking device; 5: a box body; 6: a rope body; 7: a blocking device; 8: a friction ring; 9: a blocking rod; 10: a piston case; 11: a piston; 12: an insulator; 13: and (4) a power transmission line.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 5, the invention discloses a protection device for reducing unbalanced tension of a power transmission tower line system, which comprises a bracket 1, a buffer 2, a connecting piece 3 and a breaking device 4;
the buffer comprises two buffers 2, wherein the two buffers 2 are arranged vertically, one end of each buffer 2 is connected with the bracket 1, and the other end of each buffer 2 is connected with a connecting piece 3;
In the protection device of the present embodiment, the protection device is connected to the power transmission tower and the insulator 12 is connected to the connecting member in use. When transmission line 13 breaks, the fracture device breaks under the effect of the unbalanced tension of transmission line, and the extensible member is flexible from this internal the buffer, has increased the distance between insulator and the transmission tower, has reduced the influence of unbalanced tension to the transmission tower, prevents that the transmission tower from collapsing because of unbalanced tension.
In the present embodiment, the present application provides a structural form of a protection device, which is specifically as follows: the damper 2 comprises a box 5, a rope 6 and a blocking device 7, wherein the box 5 is the damper body and the rope 6 is the telescopic element.
Wherein, the box 5 is including holding the chamber, and the first end of box 5 has and holds the hole of wearing out that the chamber communicates, and the first end of the rope body 6 is connected with connecting piece 3 after the hole of wearing out, and the second end is located and holds the intracavity, and the second end of the rope body 6 is connected with the blocking device 7 that is located and holds the intracavity, and the size of blocking device 7 is greater than the size of the hole of wearing out.
The second end of the box body 5 is hinged with the bracket 1, and the first end of the box body 5 is connected with the connecting piece 3 through the breaking device 4.
Still fixedly between the first end of box 5 and fracture device 4 set up friction ring 8, specifically, the one end of friction ring 8 is connected with the first end of box 5, and the other end is connected with fracture device 4.
Through holes are arranged on the breaking device 4 and the friction ring 8, and the first end of the rope body 6 penetrates through the through holes on the breaking device and the friction ring and then is connected with the connecting piece 3.
The holding cavity is internally provided with a separating rod 9, the separating rod 9 is connected with the side wall of the holding cavity close to the second end of the box body 5, and when the rope body 6 is positioned in the holding cavity, the rope body 6 is wound on the separating rod 9. Through twine the rope body 6 on separating the stick 9, be convenient for the accomodating of the rope body 6 to and the rope body 6 from holding intracavity roll-off, prevent that the problem of knoing from appearing in the rope body 6.
The obstruction means 7 is of spherical configuration, the diameter of the obstruction means 7 being larger than the diameter of the exit hole.
The buffer of this kind of structure is in the use, when the power transmission line breaks, under the effect of tension, the fracture device breaks, and the rope body is deviate from holding the chamber, has increased the interval between insulating terminal and the defeated line tower, has played the effect of buffering, prevents the influence of the cracked tension of the rope body to the defeated line tower.
In this embodiment, another structural form of the buffer is provided, specifically as follows:
the buffer includes piston box 10 and piston 11, and piston box 10 is including holding the chamber, and the first end of piston box 10 has and holds the mouth that stretches out of chamber intercommunication, wherein piston box 10 is more the buffer body, piston 11 is more the extension piece.
The piston 11 comprises a piston rod and a limiting piece, a first end of the piston rod is located in the containing cavity, a second end of the piston rod penetrates through the extension opening and then is connected with the support, the first end of the piston rod is connected with the limiting piece, and the size of the limiting piece is larger than that of the extension opening.
The limiting piece is connected with a mounting surface of the accommodating cavity through the breaking device 4, and the mounting surface is a surface in the accommodating cavity, which is opposite to the extending opening.
The second end of the piston box body 10 is connected with a connecting piece, and the second end of the piston rod is hinged with a support.
The cross section of the limiting part is circular, and the cross section and the piston rod are of an integrated structure.
The buffer of this kind of structure, in the use, when the power transmission line breaks, under the effect of tension, breaking device 4 breaks, and the piston rod slides for the piston box mutually, and the piston rod stretches out the piston box, has increased the interval between insulating terminal and the line conveying tower, has played the effect of buffering, prevents the influence of the cracked tension of the rope body to the power transmission tower.
The support 1 is an L-shaped structure, the support 1 comprises a horizontal rod and a vertical rod, one of the two buffers is connected with the horizontal rod, and the other buffer is connected with the vertical rod.
The structural strength of the telescoping member is greater than the structural strength of the breaking device. This arrangement ensures that when the transmission line breaks, the breaking means does not break, but the telescopic member does not.
The diameter of the breaking device 4 at the middle position is smaller than the diameter of the two ends. By adopting the breaking device with the structure, the breaking device can be ensured to be broken when the power transmission line is broken.
The technical principles of the present invention have been described above in connection with specific embodiments, which are intended to explain the principles of the present invention and should not be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive efforts, which shall fall within the scope of the present invention.
Claims (9)
1. The utility model provides a reduce unbalanced tensile protection device of transmission tower line system which characterized in that: comprises a bracket, a buffer, a connecting piece and a breaking device;
the buffer structure comprises two buffers, wherein the two buffers are arranged vertically, one end of each buffer is connected with a support, and the other end of each buffer is connected with a connecting piece;
the buffer comprises a buffer body and a telescopic piece, the telescopic piece is in sliding fit with the buffer body, the buffer is connected with the connecting piece through the breaking device, and when the breaking device breaks under the action of external force, the telescopic piece slides relative to the buffer body and extends out of the buffer body;
the support is L-shaped structure, and this support includes horizontal pole and vertical pole, and one in two bumpers is connected with the horizontal pole, and another is connected with the vertical pole.
2. The protection device for reducing unbalanced tension of a transmission tower line system according to claim 1, wherein the buffer comprises a case, a rope and a blocking device,
the rope body is connected with the connecting piece through the through hole, the second end of the rope body is positioned in the accommodating cavity, the second end of the rope body is connected with the blocking device positioned in the accommodating cavity, and the size of the blocking device is larger than that of the through hole;
the second end of the box body is hinged with the support, and the first end of the box body is connected with the connecting piece through the breaking device.
3. The protection device for reducing the unbalanced tension of the power transmission tower line system according to claim 2, wherein a friction ring is further fixedly arranged between the first end of the box body and the breaking device;
the breaking device and the friction ring are provided with through holes, and the first end of the rope body penetrates through the through holes in the breaking device and the friction ring and then is connected with the connecting piece.
4. The protection device for reducing the unbalanced tension of the power transmission tower line system according to claim 2, wherein a breaking bar is arranged in the accommodating cavity, the breaking bar is connected with a side wall of the accommodating cavity close to the second end of the box body, and when the rope body is located in the accommodating cavity, the rope body is wound on the breaking bar.
5. A protection device for reducing unbalanced tensions in a transmission tower line system according to claim 2, characterized in that the blocking device is a spherical structure, the diameter of the blocking device being larger than the diameter of the exit hole.
6. The protection device for reducing unbalanced tension of a transmission tower line according to claim 1, wherein the buffer comprises a piston box body and a piston, the piston box body comprises a containing cavity, and a first end of the piston box body is provided with a protruding opening communicated with the containing cavity;
the piston comprises a piston rod and a limiting piece, the first end of the piston rod is positioned in the accommodating cavity, the second end of the piston rod penetrates through the extension opening and then is connected with the support, the first end of the piston rod is connected with the limiting piece, and the size of the limiting piece is larger than that of the extension opening;
the limiting piece is connected with the mounting surface of the accommodating cavity through the breaking device, and the mounting surface is a surface in the accommodating cavity, which is opposite to the extending opening;
the second end of the piston box body is connected with the connecting piece, and the second end of the piston rod is hinged with the support.
7. The protection device for reducing unbalanced tension of a power transmission tower line system according to claim 2, wherein the limiting member has a circular cross section and the cross section is integrated with the piston rod.
8. The protection device for reducing tension imbalance of a power tower wiring system of claim 1, wherein the structural strength of the telescoping member is greater than the structural strength of the breaking device.
9. The protection device for reducing unbalanced tension in a power transmission tower line system of claim 1, wherein the diameter of the breaking device at the middle position is smaller than the diameter of the two ends of the breaking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910172703.5A CN109787177B (en) | 2019-03-07 | 2019-03-07 | Protection device for reducing unbalanced tension of power transmission tower wire system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910172703.5A CN109787177B (en) | 2019-03-07 | 2019-03-07 | Protection device for reducing unbalanced tension of power transmission tower wire system |
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| Publication Number | Publication Date |
|---|---|
| CN109787177A CN109787177A (en) | 2019-05-21 |
| CN109787177B true CN109787177B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910172703.5A Active CN109787177B (en) | 2019-03-07 | 2019-03-07 | Protection device for reducing unbalanced tension of power transmission tower wire system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07107647A (en) * | 1993-10-01 | 1995-04-21 | Taiyo Stainless Spring Kk | Method and unit for relaxing tension |
| JPH08163760A (en) * | 1994-12-01 | 1996-06-21 | Nippon Chikou Kk | Stay tension adjusting device |
| CN101515706A (en) * | 2009-03-06 | 2009-08-26 | 王国彬 | Device for preventing power transmission tower from collapsing caused by overload |
| JP2016149829A (en) * | 2015-02-10 | 2016-08-18 | 中国電力株式会社 | Power line seismic isolator |
| CN205693306U (en) * | 2016-06-23 | 2016-11-16 | 国网内蒙古东部科右前旗供电有限公司 | A kind of transmission line of electricity safety device |
| CN107317291A (en) * | 2017-08-28 | 2017-11-03 | 广东电网有限责任公司电力科学研究院 | A kind of protector of power transmission tower and insulator |
| CN206894144U (en) * | 2017-07-11 | 2018-01-16 | 郭若鹏 | A kind of across obstacle Poling Construction protection structure based on multiple-protection |
-
2019
- 2019-03-07 CN CN201910172703.5A patent/CN109787177B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07107647A (en) * | 1993-10-01 | 1995-04-21 | Taiyo Stainless Spring Kk | Method and unit for relaxing tension |
| JPH08163760A (en) * | 1994-12-01 | 1996-06-21 | Nippon Chikou Kk | Stay tension adjusting device |
| CN101515706A (en) * | 2009-03-06 | 2009-08-26 | 王国彬 | Device for preventing power transmission tower from collapsing caused by overload |
| JP2016149829A (en) * | 2015-02-10 | 2016-08-18 | 中国電力株式会社 | Power line seismic isolator |
| CN205693306U (en) * | 2016-06-23 | 2016-11-16 | 国网内蒙古东部科右前旗供电有限公司 | A kind of transmission line of electricity safety device |
| CN206894144U (en) * | 2017-07-11 | 2018-01-16 | 郭若鹏 | A kind of across obstacle Poling Construction protection structure based on multiple-protection |
| CN107317291A (en) * | 2017-08-28 | 2017-11-03 | 广东电网有限责任公司电力科学研究院 | A kind of protector of power transmission tower and insulator |
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| CN109787177A (en) | 2019-05-21 |
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