Gap fixed adjustable ground ice-melting pendant string

Abstract

This utility model relates to a ground wire de-icing suspension string with a fixed and adjustable gap. The suspension string includes a hanging plate, a hanging ring, and a connecting plate connected in series. A first insulator string and a second insulator string are connected in parallel at the lower end of the connecting plate. A discharge gap g is provided between the first upper suspension arc angle and the first lower suspension arc angle; a discharge gap g is also provided between the second upper suspension arc angle and the second lower suspension arc angle. By connecting the first upper hanging plate and the first upper suspension arc angle, the first lower hanging plate and the first lower suspension arc angle, the second upper hanging plate and the second upper suspension arc angle, and the second lower hanging plate and the second lower suspension arc angle through equidistant dividing holes, the discharge gap g between the first upper suspension arc angle and the first lower suspension arc angle, and the discharge gap g between the second upper suspension arc angle and the second lower suspension arc angle form an adjustable structure. This allows for rapid adjustment under different altitudes, pollution levels, and weather conditions, ensuring stable operation without drift.

Description

Technical Field

[0001] This utility model relates to the field of power system transmission technology, and more specifically to a ground wire de-icing suspension string with fixed and adjustable gap. Background Technology

[0002] In recent years, my country has frequently experienced rare low-temperature rain and snow disasters, causing great damage to the safe and stable operation of power transmission lines and the sustained development of the national economy. In order to effectively improve the anti-icing capability of power transmission lines, line de-icing technology can be used to melt the ice layer on conductors or ground wires by applying a large current.

[0003] The primary function of a ground wire is to promptly conduct lightning current into the earth during a lightning strike, and it is generally in a grounded state. However, during de-icing, the ground wire must also be insulated from the ground to ensure that the de-icing current can melt the ice layer in time. Therefore, the suspension string used for de-icing should be equipped with insulators to achieve the function of ground wire insulation during de-icing; at the same time, a discharge gap should be connected in parallel, and an appropriate gap value should be adopted to protect the insulator from breakdown during a lightning strike. Utility Model Content

[0004] To address the above problems, this utility model provides a ground wire de-icing suspension string with a fixed and adjustable gap. By setting an adjustable discharge gap g, the lightning protection level and insulation de-icing capability of the ground wire are ensured.

[0005] This utility model provides: a ground wire de-icing suspension string with fixed and adjustable gap, characterized in that: it includes a hanging plate, a hanging ring and a connecting plate connected in series from top to bottom, and a first insulator string and a second insulator string are connected in parallel at the lower end of the connecting plate; The upper end of the first insulator string is connected to one end of the lower end of the connecting plate in sequence through the first ball head hanging ring, the first upper hanging plate and the first upper right angle hanging plate; the lower end of the first insulator string is connected to the first suspension clamp in sequence through the first bowl head hanging plate, the first lower hanging plate and the first lower right angle hanging plate. The upper end of the second insulator string is connected to one end of the lower end of the connecting plate in sequence through the second ball head hanging ring, the second upper hanging plate and the second upper right angle hanging plate; the lower end of the second insulator string is connected to the second suspension clamp in sequence through the second bowl head hanging plate, the second lower hanging plate and the second lower right angle hanging plate. The first upper hanging plate is provided with a first upper suspended arc angle, and the first lower hanging plate is provided with a first lower suspended arc angle corresponding to the first upper suspended arc angle. A discharge gap g is provided between the first upper suspended arc angle and the first lower suspended arc angle. The first upper hanging plate and the first upper suspended arc angle are connected by equidistant dividing holes, and the first lower hanging plate and the first lower suspended arc angle are connected by equidistant dividing holes. The second upper hanging plate is provided with a second upper suspended arc angle, and the second lower hanging plate is provided with a second lower suspended arc angle corresponding to the second upper suspended arc angle. A discharge gap g is provided between the second upper suspended arc angle and the second lower suspended arc angle. The second upper hanging plate and the second upper suspended arc angle are connected by equidistant dividing holes, and the second lower hanging plate and the second lower suspended arc angle are connected by equidistant dividing holes.

[0006] Preferably, the adjustable range of the discharge gap g is 100–400 mm.

[0007] Preferably, the center distance between the first insulator string and the second insulator string is fixed at 450 mm.

[0008] Preferably, the ends of the first upper and lower suspended arc angles are knife-edge structures and are arranged opposite to each other on the outer side of the first insulator string skirts, so that the arc channel is away from the insulator surface; the ends of the second upper and lower suspended arc angles are knife-edge structures and are arranged opposite to each other on the outer side of the second insulator string skirts, so that the arc channel is away from the insulator surface.

[0009] Preferably, the upper end of the first insulator string and the lower end of the first ball head ring, as well as the lower end of the first insulator string and the upper end of the first cup-head plate, are omnidirectionally connected; the upper end of the second insulator string and the lower end of the second ball head ring, as well as the lower end of the second insulator string and the upper end of the second cup-head plate, are also omnidirectionally connected.

[0010] Preferably, the equidistant spacing between the first upper hanging plate and the first upper hanging arc angle is 50 mm, the equidistant spacing between the first lower hanging plate and the first lower hanging arc angle is 50 mm, the equidistant spacing between the second upper hanging plate and the second upper hanging arc angle is 50 mm, and the equidistant spacing between the second lower hanging plate and the second lower hanging arc angle is 50 mm.

[0011] Preferably, both the first and second suspension clamps are provided with protective strips.

[0012] Preferably, the effective axial height of the first insulator string and the second insulator string is 510 mm.

[0013] Preferably, both the first insulator string and the second insulator string consist of three insulators connected in series.

[0014] The beneficial effects achieved by this utility model are as follows: by connecting the first upper hanging plate and the first upper suspended arc angle, the first lower hanging plate and the first lower suspended arc angle, the second upper hanging plate and the second upper suspended arc angle, and the second lower hanging plate and the second lower suspended arc angle through equidistant dividing holes, the discharge gap g between the first upper suspended arc angle and the first lower suspended arc angle, and the discharge gap g between the second upper suspended arc angle and the second lower suspended arc angle form an adjustable structure, which can meet the requirements of rapid adjustment under different altitudes, pollution and meteorological conditions, and the set value is stable and does not drift during operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Side view; In the diagram: 1. EB hanging plate; 2. (U-shaped) hanging ring; 3. Connecting plate; 41. First upper right-angle hanging plate; 42. Second upper right-angle hanging plate; 51. First upper hanging plate; 52. First lower hanging plate; 53. Second upper hanging plate; 54. Second lower hanging plate; 61. First ball head hanging ring; 62. Second ball head hanging ring; 71. First insulator string; 72. Second insulator string; 81. First cup-head hanging plate; 82. Second cup-head hanging plate; 91. First lower right-angle hanging plate; 92. Second lower right-angle hanging plate; 101. First suspension clamp; 102. Second suspension clamp (with hanging plate); 11. Protective strip. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] like Figure 1-2 As shown, this utility model discloses a ground wire de-icing suspension string with adjustable gap, comprising a hanging plate 1, a (U-shaped) hanging ring 2, and a connecting plate 3 connected in series from top to bottom. The connecting plate 3 has a triangular structure and three connection points: one at the top and two symmetrically arranged at the bottom. The upper end of the connecting plate 3 is connected to the lower end of the U-shaped hanging ring 2, and the lower end of the connecting plate 3 is connected in parallel with a first insulator string 71 and a second insulator string 72.

[0018] In this embodiment, the upper end of the first insulator string 71 is connected to a connection point at the lower end of the connecting plate 3 via the first ball head hanging ring 61, the first upper hanging plate 51 and the first upper right angle hanging plate 41 in sequence, and the lower end of the first insulator string 71 is connected to the first suspension clamp 101 via the first bowl head hanging plate 81, the first lower hanging plate 52 and the first lower right angle hanging plate 91 in sequence.

[0019] In this embodiment, the upper end of the second insulator string 72 is connected to another connection point at the lower end of the connecting plate 3 via the second ball head hanging ring 62, the second upper hanging plate 53, and the second upper right angle hanging plate 42 in sequence. The lower end of the second insulator string 72 is connected to the second suspension clamp 102 via the second bowl head hanging plate 82, the second lower hanging plate 54, and the second lower right angle hanging plate 92 in sequence.

[0020] In this embodiment, the first upper hanging plate 51 is provided with a first upper suspended arc angle 131, and the first lower hanging plate 52 is provided with a first lower suspended arc angle 121 corresponding to the first upper suspended arc angle 131. A discharge gap g is provided between the first upper suspended arc angle 131 and the first lower suspended arc angle 121 for bypass discharge protection during lightning strikes and to cooperate with the insulator to insulate the ground wire from the ground during de-icing conditions. The first upper hanging plate 51 and the first upper suspended arc angle 131 are connected by equidistant dividing holes, and the first lower hanging plate 52 and the first lower suspended arc angle 121 are connected by equidistant dividing holes. By setting the equidistant dividing hole structure, the hole spacing is 50 mm. The arc angle gap is adjusted continuously within the range of 100-400 mm by fastening bolts, and is fixed with locking parts after setting.

[0021] In this embodiment, the second upper hanging plate 53 is provided with a second upper suspended arc angle 132, and the second lower hanging plate 54 is provided with a second lower suspended arc angle 122 corresponding to the second upper suspended arc angle 132. A discharge gap g is provided between the second upper suspended arc angle 132 and the second lower suspended arc angle 122 for bypass discharge protection during lightning strikes and to cooperate with the insulator to insulate the ground wire from the ground during de-icing conditions. The second upper hanging plate 53 and the second upper suspended arc angle 132 are connected by equidistant dividing holes, and the second lower hanging plate 54 and the second lower suspended arc angle 122 are connected by equidistant dividing holes. By setting the equidistant dividing hole structure, the hole spacing is 50 mm. The arc angle gap is adjusted continuously within the range of 100-400 mm by fastening bolts, and is fixed with locking parts after setting.

[0022] In this embodiment, the center distance between the first insulator string 71 and the second insulator string 72 is fixed at 450 mm.

[0023] In this embodiment, the ends of the first upper suspended arc angle 131 and the first lower suspended arc angle 121 are knife-edge structures and are arranged opposite to each other on the outer side of the sheds of the first insulator string 71, so that the arc channel is away from the surface of the insulator; the ends of the second upper suspended arc angle 132 and the second lower suspended arc angle 122 are knife-edge structures and are arranged opposite to each other on the outer side of the sheds of the second insulator string 72, so that the arc channel is away from the surface of the insulator.

[0024] In this embodiment, the upper end of the first insulator string 71 and the lower end of the first ball-head hanging ring 61, as well as the lower end of the first insulator string 71 and the upper end of the first bowl-head hanging plate 81, are omnidirectionally connected to reduce the impact of wind-induced swaying on the arc-sparking angle gap and maintain the stability of the set value. Similarly, the upper end of the second insulator string 72 and the lower end of the second ball-head hanging ring 62, as well as the lower end of the second insulator string 72 and the upper end of the second bowl-head hanging plate 82, are omnidirectionally connected to reduce the impact of wind-induced swaying on the arc-sparking angle gap and maintain the stability of the discharge gap g during operation.

[0025] In this embodiment, both the first suspension clamp 101 and the second suspension clamp 102 are provided with protective lines 11 to reduce electric field distortion at the clamping point and prevent wear.

[0026] In this embodiment, the effective axial height of the first insulator string 71 and the second insulator string 72 is 510 mm; both the first insulator string 71 and the second insulator string 72 include three insulators connected in series.

[0027] Two-stage fastening components are provided between the connecting plate 3 and the upper connecting section. The center distance between the connection nodes of the first upper hanging plate 51 and the first upper right-angle hanging plate 41 is 150 mm, and the center distance between the connection nodes of the first upper right-angle hanging plate 41 and the connecting plate 3 at the corresponding connection points is 150 mm. Similarly, the center distance between the connection nodes of the second upper hanging plate 53 and the second upper right-angle hanging plate 42 is 150 mm, and the center distance between the connection nodes of the second upper right-angle hanging plate 42 and the connecting plate 3 at the corresponding connection points is 150 mm. The center distance between the transition nodes from the upper part to the ball head ring (first ball head ring 61 and second ball head ring 62) and the upper part of the transition connection from the ball head ring to the insulator string (first ball head ring 61 to first insulator string 71, second ball head ring 62 to second insulator string 72) is 80 mm; the center distance between the transition nodes from the lower part of the insulator string to the cup head plate (first insulator string 71 to first cup head plate 81, second insulator string 72 to second cup head plate 82) is 95 mm.

[0028] In actual use, the target gap value is selected according to the altitude, pollution level and lightning level, and is set and locked through the graded holes; under the ice melting condition, the insulator strings (first insulator string 71 and second insulator string 72) provide insulation to the ground and bear mechanical tension; under the lightning strike condition, the arc-starting angles (first upper suspension arc-starting angle 131, first lower suspension arc-starting angle 121, second upper suspension arc-starting angle 132 and second lower suspension arc-starting angle 122) first initiate arc discharge to protect the insulator from being broken down.

[0029] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this utility model is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this utility model are defined only by the scope of the claims.

[0030] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A ground wire de-icing suspension string with adjustable gap, characterized in that: It includes a hanging plate (1), a hanging ring (2) and a connecting plate (3) connected in series from top to bottom. The lower end of the connecting plate (3) is provided with a first insulator string (71) and a second insulator string (72). The upper end of the first insulator string (71) is connected to one end of the lower end of the connecting plate (3) in sequence through a first ball head hanging ring (61), a first upper hanging plate (51) and a first upper right angle hanging plate (41). The lower end of the first insulator string (71) is connected to a first suspension clamp (101) in sequence through a first bowl head hanging plate (81), a first lower hanging plate (52) and a first lower right angle hanging plate (91). The upper end of the second insulator string (72) is connected to one end of the lower end of the connecting plate (3) in sequence through the second ball head hanging ring (62), the second upper hanging plate (53) and the second upper right angle hanging plate (42), and the lower end of the second insulator string (72) is connected to the second suspension clamp (102) in sequence through the second bowl head hanging plate (82), the second lower hanging plate (54) and the second lower right angle hanging plate (92); The first upper hanging plate (51) is provided with a first upper hanging arc angle (131), and the first lower hanging plate (52) is provided with a first lower hanging arc angle (121) corresponding to the first upper hanging arc angle (131). A discharge gap g is provided between the first upper hanging arc angle (131) and the first lower hanging arc angle (121). The first upper hanging plate (51) and the first upper hanging arc angle (131) are connected by equidistant dividing holes, and the first lower hanging plate (52) and the first lower hanging arc angle (121) are connected by equidistant dividing holes. The second upper hanging plate (53) is provided with a second upper hanging arc angle (132), and the second lower hanging plate (54) is provided with a second lower hanging arc angle (122) corresponding to the second upper hanging arc angle (132). A discharge gap g is provided between the second upper hanging arc angle (132) and the second lower hanging arc angle (122). The second upper hanging plate (53) and the second upper hanging arc angle (132) are connected by equidistant dividing holes, and the second lower hanging plate (54) and the second lower hanging arc angle (122) are connected by equidistant dividing holes.

2. The ground wire de-icing suspension string with adjustable gap as described in claim 1, characterized in that: The adjustable range of the discharge gap g is 100–400 mm.

3. The ground wire de-icing suspension string with adjustable gap as described in claim 1, characterized in that: The center distance between the first insulator string (71) and the second insulator string (72) is fixed at 450 mm.

4. The ground wire de-icing suspension string with adjustable gap as described in claim 1, characterized in that: The ends of the first upper suspended arc angle (131) and the first lower suspended arc angle (121) are knife-edge structures and are arranged opposite to each other on the outside of the sheds of the first insulator string (71) so that the arc channel is away from the surface of the insulator; the ends of the second upper suspended arc angle (132) and the second lower suspended arc angle (122) are knife-edge structures and are arranged opposite to each other on the outside of the sheds of the second insulator string (72) so that the arc channel is away from the surface of the insulator.

5. The ground wire de-icing suspension string with adjustable gap as described in claim 1, characterized in that: The upper end of the first insulator string (71) and the lower end of the first ball head ring (61), as well as the lower end of the first insulator string (71) and the upper end of the first bowl head plate (81) are omnidirectionally connected; the upper end of the second insulator string (72) and the lower end of the second ball head ring (62), as well as the lower end of the second insulator string (72) and the upper end of the second bowl head plate (82) are omnidirectionally connected.

6. The ground wire de-icing suspension string with adjustable gap as described in claim 1, characterized in that: The equidistant spacing between the first upper hanging plate (51) and the first upper hanging arc angle (131) is 50 mm, the equidistant spacing between the first lower hanging plate (52) and the first lower hanging arc angle (121) is 50 mm, the equidistant spacing between the second upper hanging plate (53) and the second upper hanging arc angle (132) is 50 mm, and the equidistant spacing between the second lower hanging plate (54) and the second lower hanging arc angle (122) is 50 mm.

7. The ground wire de-icing suspension string with adjustable gap as described in claim 1, characterized in that: A protective line (11) is provided at both the first suspension clamp (101) and the second suspension clamp (102).

8. The ground wire de-icing suspension string with adjustable gap as described in claim 1, characterized in that: The effective axial height of the first insulator string (71) and the second insulator string (72) is 510 mm.

9. The ground wire de-icing suspension string with adjustable gap as described in claim 1, characterized in that: The first insulator string (71) and the second insulator string (72) both consist of three insulators connected in series.

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