Ten-bundle conductor suspension string suitable for ultrahigh altitude

Abstract

The utility model discloses a ten-bundle conductor suspension string suitable for ultrahigh altitude, which belongs to the technical field of suspension strings and comprises two groups of suspension string units and a suspension link plate. The two groups of suspension string units are connected through a suspension link plate and are symmetrically distributed; the suspension string unit comprises a wire side fitting, a grading ring, an insulator string assembly and a hanging point side fitting which are connected in sequence; the insulator string assembly comprises three insulator strings which are arranged between the grading ring and the hanging point side fitting in parallel at intervals; the two wire side fittings are connected through a suspension yoke plate; and the two hanging point side fittings are respectively connected with an iron tower cross arm. According to the ten-bundle conductor suspension string suitable for the ultrahigh altitude, the structure can ensure that the electromagnetic environment and the air gap of a power transmission line do not exceed the limit under the condition of the ultrahigh altitude, the ecological environment protection requirement is met, and the engineering construction, the economic development and the ecological environment protection are organically combined.

Description

Technical Field

[0001] This utility model belongs to the field of suspension string technology. Specifically, it relates to a ten-section conductor suspension string suitable for ultra-high altitude applications. Background Technology

[0002] Overhead transmission lines are increasingly passing through ultra-high altitude areas of 2000m to 5000m, posing a severe challenge to the electromagnetic environment of these lines. Conventional combinations of 6-split and 8-split conductors can no longer meet the requirements of the electromagnetic environment.

[0003] The electromagnetic environment of an AC transmission line refers to the sum of all electromagnetic phenomena present in a given location, mainly involving power frequency electric fields, power frequency magnetic fields, radio interference, and audible noise. In the design and construction of transmission lines, these electromagnetic environmental factors must meet environmental protection requirements.

[0004] Therefore, in order to ensure that the electromagnetic environment and air gap of the transmission line do not exceed the limits under ultra-high altitude conditions, it is urgent to design a new type of suspension insulator string. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings by providing a split conductor suspension string suitable for ultra-high altitudes. This structure ensures that the electromagnetic environment and air gap of the transmission line do not exceed limits under ultra-high altitude conditions, meeting ecological and environmental protection requirements and organically combining engineering construction, economic development, and ecological environmental protection. To achieve the above objective, this utility model provides the following technical solution:

[0006] A suspension string for a split-type conductor suitable for ultra-high altitudes includes two sets of suspension string units and a suspension connecting plate. The two sets of suspension string units are connected by the suspension connecting plate and are symmetrically distributed. Each suspension string unit includes conductor-side hardware, an equipotential ring, an insulator string assembly, and a hanging point-side hardware connected in sequence. The insulator string assembly includes three insulator strings, which are spaced parallel to each other between the equipotential ring and the hanging point-side hardware. The two conductor-side hardware are connected by the suspension connecting plate. The two hanging point-side hardware are respectively connected to the crossarm of the tower.

[0007] Furthermore, the conductor-side hardware includes a first connecting plate and a cup-head hanging plate connected in sequence; the other end of the first connecting plate is connected to the suspension connecting plate; the other end of the cup-head hanging plate is connected to the insulator string assembly.

[0008] Furthermore, the equalizing ring is provided with a connecting bracket for connecting with the first connecting plate; the equalizing ring faces the direction of the hanging point side fitting.

[0009] Furthermore, the insulator string is a glass insulator or a porcelain insulator.

[0010] Furthermore, the insulator string is a composite insulator string or a disc insulator string.

[0011] Furthermore, the mounting hardware includes a ball head mounting plate, a DB adjustment plate, a first right-angle mounting plate, a second connecting plate, a parallel mounting plate, a third connecting plate, a second right-angle mounting plate, a third right-angle mounting plate, and a trunnion mounting plate connected in sequence; the other end of the ball head mounting plate is connected to the insulator string assembly; the other end of the trunnion mounting plate is connected to the iron crossarm.

[0012] Furthermore, the two sets of suspension string units are arranged perpendicular to each other.

[0013] Furthermore, the insulator strings are arranged perpendicular to the line direction.

[0014] Furthermore, the suspension plate is provided with several suspension clamps for stabilizing the conductor.

[0015] Furthermore, the suspension plate is also equipped with a counterweight plate.

[0016] The beneficial effects of this utility model are:

[0017] This utility model discloses a 10-meter split conductor suspension string suitable for ultra-high altitude areas. It is applicable to 10-meter split line conductors and suspension towers in ultra-high altitude areas. Moreover, this structure can ensure that the electromagnetic environment and air gap of the transmission line do not exceed the limits under ultra-high altitude conditions, meet the requirements of ecological environmental protection, and promote the harmonious coexistence of power grid construction and ecological environment. Attached Figure Description

[0018] Figure 1 This is a front view of the present utility model;

[0019] Figure 2 This is a top view of the suspension string unit of this utility model;

[0020] In the attached diagram: 1. Trunnion mounting plate; 2. Third right-angle mounting plate; 3. Second right-angle mounting plate; 4. Third connecting plate; 5. Parallel mounting plate; 6. Second connecting plate; 7. First right-angle mounting plate; 8. DB adjusting plate; 9. Ball head mounting plate; 10. Insulator string; 11. Equalizing ring; 12. Bowl head mounting plate; 13. First connecting plate; 14. Suspension connecting plate; 15. Suspension clamp; 16. Counterweight plate. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example:

[0024] See attached Figures 1-2This embodiment provides a suspension string for high-altitude conductors, comprising two sets of suspension string units. Each set of suspension string units is equipped with an insulator string 10 assembly. One end of each set of suspension string units is connected by a suspension connecting plate 14. The two sets of suspension string units are arranged at a 90-degree right angle and symmetrically along the center line of the suspension connecting plate 14. Each suspension string unit includes a hanging point fitting for transmitting mechanical loads, adjusting the connection direction, and ensuring the flexibility and stability of the insulator string 10. Each suspension string unit has three parallel insulator strings 10, which significantly improves mechanical strength and disperses the electric field distribution, reduces the electric field strength of a single string, and reduces the risk of corona discharge. An equalizing ring 11 is connected to the insulator string 10 via a connecting bracket to balance the electric field distribution between the high-voltage conductor and the fittings, suppressing partial discharge. The two sets of suspension string units are arranged at right angles and connected by the suspension connecting plate 14, which disperses the direction of the conductor's electric field and avoids electric field concentration. Preferably, the suspension plate 14 may have a rounded edge design and be galvanized and polished to reduce tip discharge, lower radio interference levels and audible noise.

[0025] Along the direction from the suspension connecting plate 14 to the tower crossarm, the side fittings include, in sequence, a ball-head mounting plate 9, a DB adjustment plate 8, a first right-angle mounting plate 7, a second connecting plate 6, a parallel mounting plate 5, a third connecting plate 4, a second right-angle mounting plate 3, a third right-angle mounting plate 2, and a trunnion mounting plate 1. Their connection methods are well-known to those skilled in the art and will not be described in detail here. The ball-head mounting plate 9 is used for connection with the insulator string 10 and provides flexible rotation capability; the DB adjustment plate 8 can adjust the length of the suspension string unit or compensate for angular deviations (such as line turning angles); each right-angle mounting plate is used to adjust the direction, turning the connection direction to a vertical direction, and adjusting the direction according to the actual application scenario; each connecting plate is used to connect multiple branch structures, connecting them into a whole; the parallel mounting plate 5 ensures that the three-section insulator string 10 is arranged in parallel; and the trunnion mounting plate 1 is used to connect to the tower crossarm.

[0026] Preferably, the ball head mounting plate 9, connecting plate and other hardware can adopt a large curvature radius design to avoid sharp edges causing corona.

[0027] Insulator string 10 can be either glass insulator or porcelain insulator, selected based on the specific application. It can also be either a composite insulator string or a disc insulator string. In high-altitude, low-temperature regions, the composite insulator string 10 exhibits excellent low-temperature resistance (maintaining elasticity even at -60℃), while the disc insulator string 10 uses glass insulators to avoid the risk of low-temperature brittleness. Actual selection should be based on specific engineering parameters (such as tension, pollution level, and wind speed) and economic analysis. If necessary, a hybrid configuration (such as a redundant design of composite insulators + disc insulators) should be adopted to maximize the effectiveness of each insulator string 10 and meet design requirements.

[0028] The main hardware on the suspension point side includes a first connecting plate 13 and a cup-head hanging plate 12. The insulator string 10 is connected to the first connecting plate 13 through the cup-head hanging plate 12, and the first connecting plate 13 is connected to the suspension connecting plate 14, completing the connection between the suspension string unit and the suspension connecting plate 14. Suspension clamps 15 are installed on the suspension connecting plate 14 to connect and fix each conductor. A counterweight plate 16 is installed to prevent the suspension string unit from being pulled upwards: when the suspension insulator string 10 of a straight tower is pulled upwards due to different height differences, the counterweight plate 16 can prevent the insulator string 10 from being pulled upwards, ensuring the stability of the line; balancing force: in some cases, when there is a large height difference on both sides of the line, the counterweight plate 16 on the suspension connecting plate 14 can help ensure the force balance on both sides of the suspension clamp 15, thereby better protecting the conductor.

[0029] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A type of split conductor suspension string suitable for ultra-high altitude applications, characterized in that: It includes two sets of suspension string units and suspension connecting plates (14); the two sets of suspension string units are connected by suspension connecting plates (14) and are symmetrically distributed; the suspension string unit includes conductor-side hardware, equalizing ring (11), insulator string (10) assembly and hanging point-side hardware connected in sequence; the insulator string (10) assembly includes three insulator strings (10) arranged in parallel between the equalizing ring (11) and the hanging point-side hardware; the two conductor-side hardware are connected by suspension connecting plates (14); the two hanging point-side hardware are respectively connected to the crossarm of the tower.

2. The ten-section split conductor suspension string suitable for ultra-high altitudes according to claim 1, characterized in that: The conductor-side fittings include a first connecting plate (13) and a bowl-shaped hanging plate (12) connected in sequence; the other end of the first connecting plate (13) is connected to the suspension connecting plate (14); the other end of the bowl-shaped hanging plate (12) is connected to the insulator string (10) assembly.

3. A type of split conductor suspension string suitable for ultra-high altitudes according to claim 2, characterized in that: The equalizing ring (11) is provided with a connecting bracket for connecting with the first connecting plate (13); the equalizing ring (11) faces the hardware direction of the hanging point.

4. A type of split conductor suspension string suitable for ultra-high altitudes according to claim 3, characterized in that: The insulator string (10) is a glass insulator or a porcelain insulator.

5. A type of split conductor suspension string suitable for ultra-high altitudes according to claim 4, characterized in that: The insulator string (10) is a composite insulator string (10) or a disc insulator string (10).

6. A type of split conductor suspension string suitable for ultra-high altitudes according to claim 5, characterized in that: The mounting hardware includes a ball head mounting plate (9), a DB adjustment plate (8), a first right-angle mounting plate (7), a second connecting plate (6), a parallel mounting plate (5), a third connecting plate (4), a second right-angle mounting plate (3), a third right-angle mounting plate (2), and a trunnion mounting plate (1) connected in sequence; the other end of the ball head mounting plate (9) is connected to the insulator string (10) assembly; the other end of the trunnion mounting plate (1) is connected to the iron crossarm.

7. A type of split conductor suspension string suitable for ultra-high altitudes according to claim 6, characterized in that: The two sets of suspension string units are arranged perpendicular to each other.

8. A type of split conductor suspension string suitable for ultra-high altitudes according to claim 7, characterized in that: The insulator string (10) is arranged perpendicular to the line direction.

9. A type of split conductor suspension string suitable for ultra-high altitudes according to claim 8, characterized in that: The suspension plate (14) is provided with several suspension clamps (15) for stabilizing the conductor.

10. A type of split conductor suspension string suitable for ultra-high altitudes according to claim 9, characterized in that: The suspension connecting plate (14) is also provided with a counterweight plate (16).

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