CN218216618U - Control device for large span crossing wire sag of power transmission line - Google Patents
Control device for large span crossing wire sag of power transmission line Download PDFInfo
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- CN218216618U CN218216618U CN202222022960.0U CN202222022960U CN218216618U CN 218216618 U CN218216618 U CN 218216618U CN 202222022960 U CN202222022960 U CN 202222022960U CN 218216618 U CN218216618 U CN 218216618U
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Abstract
The utility model relates to a transmission line's field especially relates to a be used for transmission line large-span to stride across wire sag controlling means, it is including distributing in the river, the shaft tower on hillock or canyon both sides and the wire of connecting two adjacent shaft towers, still including setting up the steel strand wires in the wire top, the shaft tower top all is provided with the hanging wire point, steel strand wires both ends and wire both ends all are fixed in on the hanging wire point, the length of wire is greater than the length of steel strand wires, it is provided with a plurality of insulating hanging point structures to pursue the section in proper order on the steel strand wires, the wire is pursued section and insulating hanging point structural connection and is pursued the section and form the wire sag. The method and the device have the effect of guaranteeing the safe distance of the power transmission line to the spanning object.
Description
Technical Field
The application relates to the field of power transmission lines, in particular to a large-span wire sag crossing control device for the power transmission lines.
Background
With the development and progress of our country in recent years, when a lead used in large span spanning engineering in power transmission line construction is gradually increased, especially when an important power transmission channel is spanned in the large span spanning engineering in some mountainous areas or gully areas, if the power transmission channel has no power cut window or does not meet the requirement of erecting a frame body for half-gear net sealing, only iron towers at two ends can be used as the frame body to connect the power transmission line.
In northwest, due to complex topography, a large span is often required to span various ground objects such as rivers, hills, canyons and the like in the erection of the power transmission line, at present, because of the difference of the span point and the limited span, the method is not completely applicable in the design and construction links due to the conditions of voltage level, wire tension and tower tension, and the phenomenon of discharge between the wire and the spanned object due to insufficient distance sometimes happens, and the detour must be carried out, so that the construction period is increased, the construction difficulty is increased, and the investment amount is also increased.
SUMMERY OF THE UTILITY MODEL
In order to guarantee the safe distance of the power transmission line to a spanning object, the application provides a large-span spanning wire sag control device for the power transmission line.
The application provides a be used for transmission line large-span to stride across wire sag control device adopts following technical scheme:
the utility model provides a be used for transmission line big span to stride across wire sag controlling means, is including distributing in the shaft tower on river, hillock or canyon both sides and the wire of connecting two adjacent shaft towers, still including setting up the steel strand wires in the wire top, the shaft tower top all is provided with the hanging wire point, on the hanging wire point was all fixed in at steel strand wires both ends and wire both ends, the length of wire is greater than the length of steel strand wires, the last section of stepping by of steel strand wires is provided with a plurality of insulating hanging point structures, the wire is stepped by the section and is hung a structural connection and step by the section and form the wire sag with insulating.
By adopting the technical scheme, aiming at a large-span spanning power transmission line, a steel strand is erected at the wire hanging point of the original tower in the same direction as the wire of the power transmission line, the steel strand is provided with an insulating hanging point structure section by section, the characteristics of different tension of the steel strand and the wire erection are utilized, and the wire is connected with the insulating hanging point structure section by section, so that the wire sag is lifted section by section, the safety distance of the power transmission line to a spanning object is ensured, the personal safety risk is avoided, the phenomenon that the wire and the spanned object are discharged due to insufficient distance is avoided, the problem that the required voltage level cannot meet the actual field is solved, the waste of resources is reduced, the construction period is shortened, the construction difficulty is reduced, and the investment amount is also reduced.
Optionally, the insulation hanging point structure comprises a first connecting assembly, a suspension insulator string and a second connecting assembly, one end of the suspension insulator string is detachably connected with the first connecting assembly, the other end of the suspension insulator string is detachably connected with the second connecting assembly, the first connecting assembly is detachably connected with the steel strand, and the second connecting assembly is detachably connected with the wire.
Through adopting above-mentioned technical scheme, steel strand wires are connected to first coupling assembling, and second coupling assembling connecting wire sets up suspension insulator chain between first coupling assembling and second coupling assembling to keep safe distance between realization steel strand wires and the wire, reach the steel strand wires and play and add when establishing the wire effect, can not make and produce electricity between wire and steel strand wires, can not cause the harm to the wire yet.
Optionally, the first connecting assembly comprises a ball-end hanging ring, a first parallel groove clamp and a second parallel groove clamp, one end of the ball-end hanging ring is connected with the steel strand in a looped mode, the other end of the ball-end hanging ring is clamped with the suspension insulator string, and the first parallel groove clamp and the second parallel groove clamp are located on two sides of the ball-end hanging ring and clamp the steel strand respectively.
By adopting the technical scheme, the ball head is arranged at one end of the ball head hanging ring, the hanging ring is arranged at one end of the ball head hanging ring, the steel strand penetrates through one end of the hanging ring, the end with the ball head is matched and clamped with one end of the suspension insulator string, and the parallel groove clamps positioned on two sides of the ball head hanging ring clamp the steel strand, so that the ball head hanging ring is fixed in position on the steel strand, the suspension insulator string is not prone to sliding left and right, and the suspension insulator string and the steel strand are connected.
Optionally, the second coupling assembling includes bracket, connecting block and bowl head link plate, the bracket is placed for suspension insulator string level, the connecting block perpendicular with the bracket and with bracket middle part fixed connection, bowl head link plate one end and connecting block swing joint, the other end clamps with suspension insulator string, the storage tank has been seted up along the horizontal direction on the bracket, the wire is arranged in the storage tank.
Through adopting above-mentioned technical scheme, fixed the setting connecting block on the bracket that the level was placed, rethread bowl head link plate will be connected with suspension insulator chain and fixed block to realize being connected of suspension insulator chain and bracket, such connected mode can effectively alleviate the shear stress between suspension insulator chain and the bracket, makes to have certain free space between suspension insulator chain and the bracket. In addition, the lead is arranged in the accommodating groove which is horizontally arranged, so that the lead is effectively protected from being abraded, the lead is supported to a certain degree, and the degree of great drooping of the lead is reduced.
Optionally, the two ends of the bracket are wound with wire hoops for fixing wires.
By adopting the technical scheme, the two ends of the bracket are wound with the wire wrapping objects, so that the wire can be further fixed and is not easy to fall off from the accommodating groove under the action of external force.
Optionally, protruding blocks are arranged at two ends of the bracket along the circumferential direction of the bracket, and the wire wrapping object is located on the inner sides of the protruding blocks.
Through adopting above-mentioned technical scheme, outstanding piece keeps off wire band thing at outstanding piece inboard to make the difficult follow bracket of wire band thing slide, play the effect of spacing wire band thing.
In summary, the present application includes at least one of the following beneficial technical effects:
1. a steel strand is erected in the same direction as a transmission line conductor at the line hanging point of an original tower, an insulating hanging point structure is arranged on the steel strand section by section, the conductor is connected with the insulating hanging point structure section by section, the conductor sag is promoted section by section, the safety distance of the transmission line to a spanning object is ensured, the phenomenon that the conductor and the spanned object are discharged due to insufficient distance is avoided, the problem that the required voltage level cannot meet the actual field is solved, the construction period is shortened, the construction difficulty is reduced, and the investment amount is also reduced.
2. Connect the steel strand wires through first coupling assembling, second coupling assembling connecting wire sets up suspension insulator chain between first coupling assembling and second coupling assembling to keep safe distance between realization steel strand wires and the wire, reach the steel strand wires and when playing to add and establish the wire effect, can not make between wire and the steel strand wires produce electricity, can not cause the harm to the wire yet.
3. The suspension insulator string and the fixing block are connected through the socket hanging plate, so that the suspension insulator string and the bracket are connected, the shear stress between the suspension insulator string and the bracket is effectively reduced, and a certain moving space is reserved between the suspension insulator string and the bracket. In addition, the wire is arranged in the horizontally arranged accommodating groove, so that the wire is effectively protected from being abraded, the wire is supported to a certain degree, and the degree of substantial drooping of the wire is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a sag control device for a large span crossing wire of a power transmission line.
Fig. 2 is a schematic structural diagram of an insulating hanging point structure in the present application.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
Fig. 4 is an enlarged schematic view of a portion B in fig. 2.
Description of reference numerals: 1. a pole tower; 2. a wire; 3. steel strand wires; 4. an insulating hanging point structure; 41. a first connection assembly; 411. a ball head hanging ring; 412. a first parallel groove clamp; 413. a second parallel groove clamp; 42. a suspension insulator string; 43. a second connection assembly; 431. a bracket; 431-1, a containing groove; 431-2, a protruding block; 432. connecting blocks; 433. a socket hanging plate; 434. a wire shroud.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a control device for a large-span of a power transmission line to cross a conductor sag. Referring to fig. 1, the control device for the large span wire sag control of the power transmission line comprises towers 1 distributed on two sides of a river, a hill or a canyon and a wire 2 connected with two adjacent towers 1, and further comprises a steel strand 3 arranged above the wire 2, wherein a wire hanging point is arranged at the top end of each tower 1, a wire hanging connecting plate is arranged at the wire hanging point, the wire hanging connecting plate is fixed on the towers 1 through hardware fittings, two ends of the steel strand 3 and two ends of the wire 2 are fixed on the wire hanging connecting plate, and the steel strand 3 and the wire 2 have certain tension due to the pulling and holding effect of the two adjacent towers 1 on the steel strand 3. In practice, the length of the conductor 2 is greater than the length of the steel strand 3. A plurality of insulating hanging point structures 4 are sequentially arranged on the steel strand 3 section by section, and the lead 2 is connected with the insulating hanging point structures 4 section by section and forms a lead 2 sag section by section. In the present application, the height of the insulating hanging point structure 4 is selected according to the voltage class.
Taking the height of the hanging point of the tower 1 as an example, under the condition that the steel strand 3 is not arranged, the lowest point of the crossing point of the lead 2 in the 10kV overhead line is 3.5m, and after the steel strand 3 is arranged, the lowest point of the crossing point of the lead 2 in the 10kV overhead line is 6.76m. Obviously, the sag height can be increased by nearly one time under the same tension. In addition, the distance between two adjacent insulating hanging point structures 4 can be adjusted according to actual conditions, so that the sag height is further improved.
Referring to fig. 2, the insulation hanging point structure 4 comprises a first connecting assembly 41, a suspension insulator string 42 and a second connecting assembly 43, the suspension insulator string 42 is vertically arranged relative to the ground, one end of the suspension insulator string 42 is provided with a concave clamping groove, the other end of the suspension insulator string has the structural characteristic of protruding a sphere, one end of the suspension insulator string 42 is detachably connected with the first connecting assembly 41, the other end of the suspension insulator string is detachably connected with the second connecting assembly 43, the first connecting assembly 41 is detachably connected with the steel strand 3, and the second connecting assembly 43 is detachably connected with the lead 2.
The first connecting assembly 41 comprises a ball-end hanging ring 411, a first parallel groove clamp 412 and a second parallel groove clamp 413, one end, provided with a hanging ring, of the ball-end hanging ring 411 penetrates through the steel strand 3 to be in annular connection with the steel strand 3, the other end, provided with a ball end, of the ball-end hanging ring 411 is clamped with one end, provided with a concave clamping groove, of the suspension insulator string 42, and therefore the suspension insulator string 42 can have a certain moving space. First parallel groove clamp 412 is located bulb link 411 one side, and second parallel groove clamp 413 is located bulb link 411 opposite side, and steel strand 3 is cliied respectively to the first parallel groove clamp 412 and the second parallel groove clamp 413 of both sides, and the ring hole of bulb link 411 is not enough to pass first parallel groove clamp 412 and second parallel groove clamp 413 to realize first parallel groove clamp 412 and second parallel groove clamp 413 and grasp bulb link 411, make the position of bulb link 411 on steel strand 3 fixed.
Second coupling assembling 43 includes bracket 431, connecting block 432 and socket clevis 433, bracket 431 is placed for suspension insulator chain 42 level, connecting block 432 perpendicular and with bracket 431 middle part integrated into one piece or welding with bracket 431, connecting block 432 is kept away from bracket 431 one end and has been seted up first fixed orifices, socket clevis 433 one end is provided with the draw-in groove, and the second fixed orifices has been seted up along draw-in groove both sides, socket clevis 433 one end and connecting block 432 joint back, the rethread screw rod passes first fixed orifices and second fixed orifices in proper order and by nut clamping screw both ends, thereby realize socket clevis 433 and connecting plate swing joint. The other end of the socket hanging plate 433 is clamped with one end of the suspension insulator string 42 with a protruding ball body. The bracket 431 is provided with a receiving groove 431-1 along the horizontal direction, the width of the receiving groove 431-1 is matched with that of the lead 2, and the lead 2 is arranged in the receiving groove 431-1.
In order to prevent the lead 2 from falling off from the accommodation groove 431-1, a lead wrap 434 for fixing the lead 2 is wound around both ends of the bracket 431. In this application, the wire shroud 434 is a flexible material and is insulated.
In order to stabilize the wire wrap 434 wound on the bracket 431, the two ends of the bracket 431 are provided with the protruding blocks 431-2 along the circumferential direction of the bracket 431, and the wire wrap 434 is positioned inside the protruding blocks 431-2 to play a role of resisting, so that the wire wrap 434 is not easy to fall off from the bracket 431.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (6)
1. The utility model provides a be used for transmission line large span to stride across wire sag controlling means, includes distributing in shaft tower (1) on river, hillock or canyon both sides and connects wire (2) of two adjacent shaft towers (1), its characterized in that: still including setting up in steel strand wires (3) of wire (2) top, shaft tower (1) top all is provided with the hanging wire point, steel strand wires (3) both ends and wire (2) both ends all are fixed in on the hanging wire point, the length of wire (2) is greater than the length of steel strand wires (3), be provided with a plurality of insulating hanging point structures (4) on steel strand wires (3) section by section in proper order, wire (2) section by section is connected with insulating hanging point structure (4) and section by section formation wire (2) arc hangs down.
2. The device for controlling the large-span wire sag of the power transmission line according to claim 1, wherein: insulating string point structure (4) include first connecting elements (41), suspension insulator string (42) and second coupling assembling (43), suspension insulator string (42) one end can be dismantled with first connecting elements (41) and be connected, and the other end can be dismantled with second coupling assembling (43) and be connected, first connecting elements (41) can be dismantled with steel strand wires (3) and be connected, second coupling assembling (43) can be dismantled with wire (2) and be connected.
3. The device for controlling the large span of the power transmission line to span the conductor sag according to the claim 2, characterized in that: the first connecting assembly (41) comprises a ball head hanging ring (411), a first parallel groove clamp (412) and a second parallel groove clamp (413), one end of the ball head hanging ring (411) is connected with the steel strand (3) in a ring mode, the other end of the ball head hanging ring (411) is clamped with the suspension insulator string (42), and the first parallel groove clamp (412) and the second parallel groove clamp (413) are located on two sides of the ball head hanging ring (411) respectively and clamp the steel strand (3).
4. The device for controlling the large span of the power transmission line to span the conductor sag according to the claim 2, characterized in that: second coupling assembling (43) include bracket (431), connecting block (432) and socket clevis plate (433), bracket (431) are placed for suspension insulator string (42) level, connecting block (432) perpendicular and with bracket (431) middle part fixed connection with bracket (431), socket clevis plate (433) one end and connecting block (432) swing joint, the other end clamps with suspension insulator string (42), storage tank (431-1) has been seted up along the horizontal direction on bracket (431), storage tank (431-1) is arranged in to wire (2).
5. The device for controlling the large span conductor sag of the power transmission line according to claim 4, characterized in that: and the two ends of the bracket (431) are wound with wire hooping objects (434) for fixing the wires (2).
6. The device for controlling the large span conductor sag of the power transmission line according to claim 5, characterized in that: the two ends of the bracket (431) are provided with protruding blocks (431-2) along the circumferential direction of the bracket (431), and the wire shroud (434) is positioned on the inner sides of the protruding blocks (431-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222022960.0U CN218216618U (en) | 2022-07-29 | 2022-07-29 | Control device for large span crossing wire sag of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222022960.0U CN218216618U (en) | 2022-07-29 | 2022-07-29 | Control device for large span crossing wire sag of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218216618U true CN218216618U (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222022960.0U Active CN218216618U (en) | 2022-07-29 | 2022-07-29 | Control device for large span crossing wire sag of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218216618U (en) |
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- 2022-07-29 CN CN202222022960.0U patent/CN218216618U/en active Active
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