CN202384725U - Structure for preventing windage yaw flashover of power transmission line - Google Patents
Structure for preventing windage yaw flashover of power transmission line Download PDFInfo
- Publication number
- CN202384725U CN202384725U CN2011203959074U CN201120395907U CN202384725U CN 202384725 U CN202384725 U CN 202384725U CN 2011203959074 U CN2011203959074 U CN 2011203959074U CN 201120395907 U CN201120395907 U CN 201120395907U CN 202384725 U CN202384725 U CN 202384725U
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- Prior art keywords
- transmission line
- suspension insulator
- windage yaw
- lead
- damping system
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Abstract
A structure for preventing windage yaw flashover of a power transmission line is characterized in that: spacer rods (4, 5) and wire clamps (6, 7) are respectively arranged on wires (2, 3) which are respectively arranged at a left side and a right side of a suspension insulator string (1), a damping system (8) is arranged between the wire clamps (6, 7), the damping system (8) is hinged to the wire clamps (6, 7) through pull rods (9); at the same time, an end part fitting of the suspension insulator string (1) is provided with a T-shaped end (10), the T-shaped end (10) is provided with bolt holes (12) used for connecting with an iron tower cross arm (11), so that a contact area of the connection is increased, therefore, the suspension insulator string can be stably connected with the iron tower cross arm, and a moment also can be reduced. On one hand, the structure of the utility model effectively absorbs vibration energy of the wire, on the other hand, the structure effectively reduces the moment for an end part of the suspension insulator string due to galloping of the wire, and reduces a windage yaw trend of the suspension insulator string, therefore, the structure of the utility model has the advantages of simple structure, low cost, long service life, good windage yaw prevention effect, capacity for satisfying windage yaw prevention requirements of the suspension insulator string of a tangent tower of an overhead transmission line, and easy realization.
Description
Technical field
The utility model relates to a kind of structure that prevents transmission line windage yaw flashover, particularly relates to a kind of windage yaw flashover method that prevents the tangent tower suspension insulator, belongs to electricity overhead power transmission line resist technology field.
Background technology
In recent years; The transmission line windage yaw flashover fault showed increased that causes by the high wind heavy rain; Usually reclosing is difficult for successfully after the windage yaw flashover taking place; Caused serious harm for safety, the stable operation of electrical network, and the generation of windage yaw is often with strong wind and thunderstorm phenomenon, to failure judgment and search and bring very big difficulty.
The windage yaw flashover is under the various unfavorable conditions in the external world, to cause the spatial joint clearance distance between transmission line upper conductor and the shaft tower to reduce, and just disruptive discharge can take place during high working voltage when the electrical strength of this gap distance can not tolerate system.Continuingly act on transmission pressure when wind carries, be prone to cause the lead windage yaw, i.e. conductor galloping.Conductor galloping is actually a kind of vertical, level of complicacy and the three-dimensional motion of reversing; Its mechanism is considered to: do the time spent when lead receives crosswind force; Produce upwards (a descending) acceleration movement, promptly except moving both vertically, also make lead receive the effect of an aerodynamics moment and produce and reverse and swing; When the Frequency Synchronization of the perpendicular motion of frequency of twist motion, will produce conductor galloping and swing.The big the maximum of general amplitude surpasses 10m, shows on the shaft tower fixing point to be: along the torsionoscillation with horizontal path of waving of line direction, this is a major reason that very easily causes the circuit windage yaw.
In order to prevent transmission line windage yaw flashover; Often take under tangent tower suspension clamp installation weight or other method to strengthen the vertical load of insulator string; Do not suppress to cause the conductor galloping or the torsionoscillation of windage yaw in fact from the source, actual effect is unsatisfactory.
The utility model content
In order to overcome the defective that prior art exists; The utility model proposes a kind of new transmission line windage yaw flashover structure that prevents; To reach that effective pilot is waved or torsionoscillation and reduce conductor galloping, prevent the windage yaw flashover of tangent tower suspension insulator to the big moment that ball-eye place in the prior art produces.
For solving the problems of the technologies described above, the utility model is achieved in that
A kind of transmission line windage yaw flashover structure that prevents; Comprise the suspension insulator 1 that hangs on suspention lead on the iron tower of power transmission line cross-arm; It is characterized in that: between the both sides lead of described suspension insulator, one-sided or the both sides lead is provided with vibration insulating system: on the lead at interval a determining deviation be provided with two wire clamps and clamp lead; Be provided with damping system 8 between two wire clamps, damping system two ends and two wire clamps are hinged.
On the basis of the above, the utility model can also be done further improvement:
The end gold utensil of described suspension insulator 1 is provided with " T " shape termination, and " T " shape termination has bolt hole and is connected with the iron tower cross-arm.
Also be separately installed with conductor spacer on the both sides lead of described suspension insulator.
Described wire clamp is made up of two intermediate plates, and two intermediate plates are fixed through Bolt Connection.
Described conductor spacer is standard type damp type or non-damp type conductor spacer, and two conductor spacers are identical from the distance of suspension insulator, are 500-800mm.
Wire clamp between the described both sides lead that strides across suspension insulator is identical from the distance of suspension insulator, is 2000-3000mm.
Described damping system 8 two ends are through pull bar 9 and two wire clamps 6, hinged between 7.
Described damping system 8 is spring-damper, viscoelastic damper, air damper or the composite damping system that constitutes arranged side by side between them.Preferred viscoelastic damper is arranged side by side with air damper, and absorption is waved energy along what lead passed over.
Described air damper is made up of the uncovered big sleeve pipe of an end and the small casing of closed at both ends, and the opening end of the arrogant sleeve pipe of said small casing inserts, the gap formation damping air flue between the inwall of the outer wall of small casing and big sleeve pipe.
At suspension insulator 1 left and right sides lead 2,3 difference installation interval rod 4,5 and wire clamps 6,7; Wire clamp 6, be provided with damping system 8 between 7; Damping system 8 forms hinged through pull bar 9 and wire clamp 6,7; Be used to absorb the vibrational energy of both sides lead, reach the purpose that suppresses lead level and twisting vibration; Simultaneously, suspension insulator 1 end gold utensil is provided with " T " shape termination 10, and " T " shape termination 10 has and is used for the bolt hole 12 that is connected with iron tower cross-arm 11, increases the contact-making surface that connects, and suspension insulator is connected with the iron tower cross-arm stablizes and minimizing moment.The utility model effectively absorbs the conductor vibration energy on the one hand, effectively reduces the moment that conductor galloping is produced the suspension insulator end on the other hand, reduces suspension insulator windage yaw trend; Simple in structure; Cost is low, long service life, and anti-windage yaw is effective; The anti-windage yaw demand that is fit to overhead transmission line tangent tower suspension insulator is prone to realize.
The utility model suspension insulator left and right sides lead installation interval rod and wire clamp; Between two wire clamps, be provided with damping system; The composite damping system that preferred viscoelastic damper of damping system and air damper constitute side by side; Make full use of viscoelastic damper dependable performance, economical and practical, air damper air compression property is big, can bear big displacement and the characteristics of damping can be provided in vertical direction and horizontal direction simultaneously; Simultaneously, damping system and wire clamp are designed to articulated structure, and its mechanical characteristic is two power bars; Only bear and stretch and compressive load, like this when the vibrational energy on the lead is delivered to damping system with regard to system to the stretching and the compression of system support mechanism, the formation system is to the absorption of vibrational energy; Effectively reduce the transmission of vibrational energy to lead; Reach the purpose that suppresses conductor galloping, conductor spacer 4,5 is identical from the distance of suspension insulator, is 500-800mm; The both sides lead forms a fixed body near making suspension insulator, stops the progressive wave of lead to advance.Insulator string end gold utensil is provided with " T " shape termination, and " T " shape termination has and is used for the bolt hole that is connected with the iron tower cross-arm, increases the contact-making surface that connects.The utility model effectively absorbs conductor galloping or torsionoscillation energy on the one hand; Effectively reduce the big moment that conductor galloping produces ball-eye place, suspension insulator end in the prior art on the other hand, simple in structure, cost is low; Long service life; Anti-windage yaw is effective, is fit to the anti-windage yaw demand of overhead transmission line tangent tower suspension insulator, is prone to realize.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain:
Fig. 1 is that the utility model prevents transmission line windage yaw flashover method embodiment one structural representation;
Fig. 2 is that the utility model prevents transmission line windage yaw flashover method embodiment two structural representations;
Fig. 3 is that the utility model prevents transmission line windage yaw flashover method embodiment three structural representations;
Fig. 4 is the utility model wire clamp sketch map;
Fig. 5 is the composite damping system sketch map that the utility model viscoelastic damper and air damper constitute side by side;
Fig. 6 is the structural representation of the utility model suspension insulator end;
Fig. 7 is the composite damping system sketch map that the series connection of 3 spring-dampers of the utility model constitutes with air damper more side by side;
Fig. 8 is the utility model viscoelastic damper sketch map;
Fig. 9 is the utility model air damper sketch map;
Figure 10 is the utility model spring-damper sketch map;
Picture in picture number expression: the 1st, suspension insulator, the 2nd, left side lead; The 3rd, the right side lead; The 4th, the left side conductor spacer; The 5th, the right side conductor spacer; The 6th, the left side wire clamp; The 7th, the right side wire clamp; The 8th, damping system; The 9th, pull bar; The 10th, " T " shape termination; The 11st, the iron tower cross-arm; The 12nd, bolt hole.
Embodiment
Embodiment one
Fig. 1 is that the utility model prevents transmission line windage yaw flashover method embodiment one structural representation.
As shown in Figure 1; On the lead 2,3 of 500mm, be mounted with damp type conductor spacer 4,5 respectively, left and right sides wire clamp 6 in suspension insulator 1 left and right sides; 7 to be installed in from suspension insulator respectively be on the left and right sides lead of 2.0m; Between the both sides lead of suspension insulator or the both sides lead is provided with vibration insulating system, promptly be provided with damper system 8 between the wire clamp of the left and right sides, realize hinge-coupled through pull bar 9 between damping system and the left and right sides wire clamp; Suspension insulator 1 end gold utensil is provided with " T " shape termination 10, and " T " shape termination 10 has and is used for the bolt hole 12 that is connected with iron tower cross-arm 11.
Accompanying drawing 4 is the utility model wire clamp structural representations.Wire clamp 6,7th is made up of two intermediate plates, and two intermediate plates are fixed through Bolt Connection.
Fig. 2 is that the utility model prevents transmission line windage yaw flashover method embodiment two structural representations.
Non-damp type conductor spacer 4; 5 are separately fixed at suspension insulator 1 left and right sides on the lead 2,3 of 800mm; Left and right sides wire clamp 6,7 is installed in respectively from suspension insulator 1 distance and is the left and right sides lead 2,3 of 2.5m; Damping system 8 is articulated on the left and right sides wire clamp 5,6 through pull bar 9, and insulator string 9 end gold utensils are provided with " T " shape termination 10, and " T " shape termination 10 has and is used for the bolt hole 12 that is connected with iron tower cross-arm 11.
Damping system is the composite damping system that the series connection of 3 spring-dampers constitutes with air damper more side by side, shown in accompanying drawing 7.
Left and right sides wire clamp 6,7 and insulator string end construction are with embodiment 1.
Fig. 3 is that the utility model prevents transmission line windage yaw flashover method embodiment three structural representations.
On suspension insulator 1 left and right sides lead 1,2, fixing respectively two pairs of vibration insulating systems of forming by wire clamp 5,6 and damping system 8, two couples of vibration insulating system interval 2.5m.
Damping system is viscoelastic damper, air damper or spring-damper, like Fig. 8-Figure 10, or the composite damping system that constitutes side by side between them.
The foregoing description one to example three described conductor spacers 4,5 and wire clamp 6,7 and insulator string end gold utensil " T " shape termination 10 all available general machining process or casting method create, and various dampers also can create in general damper manufacturer.
It is also passable only on one-sided lead, to be provided with vibration insulating system, and structure coexists mutually, and this repeats no more.
The operation principle of the utility model is following: conductor spacer 4,5 is separately fixed at the suspension insulator left and right sides apart on the lead of 500-800mm; Form a fixed body; Make near the lead of the both sides of suspension insulator be in relative static conditions, the vibration wave energy that string on the lead is come passes to damping system 8 through wire clamp 6,7, and damping system 8 is designed to articulated structure with wire clamp 6,7; Its mechanical characteristic is two power bars; Only bear and stretch and compressive load, like this when the vibrational energy on the lead is delivered to damping system with regard to system to the stretching and the compression of system support mechanism, the formation system is to the absorption of vibrational energy; Effectively reduce the transmission of vibrational energy, reach the purpose that suppresses conductor galloping lead.The spherical link that " T " shape termination 10 of insulator string end replaces prior art helps increasing the contact-making surface of connection, makes insulator string be connected stable with the iron tower cross-arm and the minimizing moment that conductor galloping produced.
Claims (9)
1. structure that prevents transmission line windage yaw flashover; Comprise the suspension insulator (1) that hangs on suspention lead on the iron tower of power transmission line cross-arm; It is characterized in that: between the both sides lead of described suspension insulator (2,3), one-sided or the both sides lead is provided with vibration insulating system: on the lead at interval a determining deviation be provided with two wire clamps (6,7) and clamp lead; Be provided with damping system (8) between two wire clamps, damping system two ends and two wire clamps are hinged.
2. the structure that prevents transmission line windage yaw flashover according to claim 1 is characterized in that: the end gold utensil of described suspension insulator (1) is provided with " T " shape termination (10), and " T " shape termination has bolt hole and is connected with iron tower cross-arm (11).
3. the structure that prevents transmission line windage yaw flashover according to claim 1 and 2 is characterized in that: also be separately installed with conductor spacer (4,5) on the both sides lead of described suspension insulator.
4. the structure that prevents transmission line windage yaw flashover according to claim 3 is characterized in that: described wire clamp is made up of two intermediate plates, and two intermediate plates are fixed through Bolt Connection.
5. the structure that prevents transmission line windage yaw flashover according to claim 3 is characterized in that: described conductor spacer is standard type damp type or non-damp type conductor spacer, and two conductor spacers are identical from the distance of suspension insulator, are 500-800mm.
6. the structure that prevents transmission line windage yaw flashover according to claim 3 is characterized in that: the wire clamp between the described both sides lead that strides across suspension insulator is identical from the distance of suspension insulator, is 2000-3000mm.
7. the structure that prevents transmission line windage yaw flashover according to claim 3 is characterized in that: described damping system (8) two ends are through hinged between pull bar (9) and two wire clamps (6,7).
8. the structure that prevents transmission line windage yaw flashover according to claim 7 is characterized in that: described damping system (8) is spring-damper, viscoelastic damper, air damper or the composite damping system that constitutes arranged side by side between them.
9. a kind of structure that prevents transmission line windage yaw flashover according to claim 8; It is characterized in that; Described air damper is made up of the uncovered big sleeve pipe of an end and the small casing of closed at both ends; The opening end of the arrogant sleeve pipe of said small casing inserts, the gap formation damping air flue between the inwall of the outer wall of small casing and big sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203959074U CN202384725U (en) | 2011-10-18 | 2011-10-18 | Structure for preventing windage yaw flashover of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203959074U CN202384725U (en) | 2011-10-18 | 2011-10-18 | Structure for preventing windage yaw flashover of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202384725U true CN202384725U (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203959074U Expired - Lifetime CN202384725U (en) | 2011-10-18 | 2011-10-18 | Structure for preventing windage yaw flashover of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202384725U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026419A (en) * | 2016-02-02 | 2017-08-08 | 中国电力科学研究院 | Conductor spacer is flexibly supported between a kind of suspension insulator |
| CN107069920A (en) * | 2017-06-16 | 2017-08-18 | 西安工程大学 | A kind of transmission line of electricity energy taking device based on piezoelectric and its take can method |
-
2011
- 2011-10-18 CN CN2011203959074U patent/CN202384725U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026419A (en) * | 2016-02-02 | 2017-08-08 | 中国电力科学研究院 | Conductor spacer is flexibly supported between a kind of suspension insulator |
| CN107069920A (en) * | 2017-06-16 | 2017-08-18 | 西安工程大学 | A kind of transmission line of electricity energy taking device based on piezoelectric and its take can method |
| CN107069920B (en) * | 2017-06-16 | 2020-09-22 | 西安工程大学 | Power transmission line energy taking device based on piezoelectric material and energy taking method thereof |
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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 |
Granted publication date: 20120815 |
|
| CX01 | Expiry of patent term |