Jumper insulator string
By designing jumper insulator strings, including insulators, connecting components, and hardware assemblies, the transition problem of four-split conductors at cable terminal towers was solved, achieving straight conductor connection and improved stability, thus ensuring the safety of cable terminal towers.
Patent Information
- Application Number
- CN202520163715.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-24
AI Technical Summary
In the existing technology, it is difficult to run four-split conductors down at the cable terminal tower, and the conventional crossarm support insulator end fixing clamps cannot be effectively fixed, resulting in an unsmooth transition when converting four-split conductors to double-split conductors.
Design a jumper insulator string including insulators, connecting components and hardware assembly. The hardware assembly fixes the conductors by hanging plates and suspension clamps, and is equipped with a counterweight device to increase stability, achieving a smooth transition of the four-split conductors.
It achieves a smooth transition of the four-split conductor, improves the stability and wind resistance, and ensures a safe and reliable connection of the cable terminal tower.
Smart Images
Figure CN223898091U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power transmission line technology, specifically to a jumper insulator string. Background Technology
[0002] In transmission lines, overhead lines transition to underground cable lines via cable terminal towers. For double-circuit cable terminal towers with vertically arranged conductors, the upper phase overhead conductor is led down through the tension clamp guide plate of the tension string on the overhead line side, transitions through the jumper string, turns vertically downwards in the direction of the line's advance, and is then led down to the cable terminal head via the fixed clamp at the end of the crossarm support insulator installed on the conductor crossarm or lead-down support of the cable terminal tower.
[0003] However, when the overhead line to be brought down is a four-split conductor, the fixed clamps at the ends of the conventional crossarm support insulators are only designed for two conductors, and the equipment clamps used for connecting the conductors at the cable terminal are only single-conductor equipment clamps and double-conductor equipment clamps. It is difficult to bring down a four-split conductor. Therefore, the four-split conductor should be converted into two two-split conductors before bringing it down. Hence, an additional jumper insulator string needs to be designed. Utility Model Content
[0004] The purpose of this application is to provide a jumper insulator string to solve the problem that it is difficult to bring down the four-split conductors of the cable terminal tower in the prior art.
[0005] To achieve the above objectives, this application employs the following technical solution:
[0006] This application discloses a jumper insulator string, which includes an insulator, one end of which is fixed with a connecting component, and the other end of which is fixed with at least two sets of hardware assemblies for constraining split conductors, and a plurality of said hardware assemblies are arranged in parallel.
[0007] In a further embodiment of this application, the connecting assembly includes a first mounting plate and a ball-head hanging ring, the first mounting plate and the ball-head hanging ring being movably connected, and the ball-head hanging ring being fixedly connected to the hardware assembly.
[0008] In a further embodiment of this application, a second mounting plate and a triangular connecting plate are connected to the insulator, the triangular connecting plate and the second mounting plate are fixedly connected, and a plurality of the hardware assemblies are fixed to the triangular connecting plate, the plurality of the hardware assemblies being arranged along the axial direction of the insulator.
[0009] In a further embodiment, multiple of the aforementioned hardware assemblies are uniformly and symmetrically fixed to the triangular connecting plate.
[0010] In a further embodiment, the hardware assembly includes a third mounting plate and a suspension clamp, wherein the third mounting plate is fixedly connected to the triangular connecting plate, and the suspension clamp is fixed to the end of the third mounting plate away from the triangular connecting plate.
[0011] In a further embodiment, a protective strap is fixed inside the locking hole of the suspension clamp.
[0012] In a further embodiment of this application, the jumper insulator string further includes multiple counterweight devices, and the multiple counterweight devices are connected one-to-one with the multiple hardware assemblies.
[0013] In a further embodiment, the counterweight device includes a fourth hanging plate, a counterweight base, and a counterweight plate.
[0014] The fourth hanging plate and the counterweight base are fixedly connected. The fourth hanging plate is connected to the hardware assembly, and the counterweight plate is installed on the counterweight base.
[0015] In a further embodiment, each of the aforementioned hammer devices comprises multiple hammer plates, and the center points of the multiple hammer plates in each hammer device are arranged collinearly.
[0016] The beneficial effects of this application are as follows:
[0017] In this application, two sets of hardware assemblies are fixed below the insulator. The hardware assemblies can fix and position the conductors and can transition the four-split conductors on the overhead line side of the cable terminal tower into two double-split conductors through this string. This effectively achieves a straight and smooth transition of the jumper between the four-split conductor tension clamp and the double-split conductor crossarm support insulator.
[0018] A counterweight device is installed at the bottom of the fitting assembly to increase the stability of this jumper insulator string during use, improve its wind and sway resistance, and enhance its safety performance. Attached Figure Description
[0019] Figure 1 This is a front view schematic diagram of the jumper insulator string in an embodiment of this application;
[0020] Figure 2 This is a side view of the jumper insulator string structure in an embodiment of this application.
[0021] in:
[0022] 1. First hanging plate; 2. Ball head hanging ring; 3. Insulator; 4. Second hanging plate; 5. Triangular connecting plate; 6. Third hanging plate; 7. Suspension clamp; 8. Protective tape; 9. Fourth hanging plate; 10. Counterweight base; 11. Counterweight plate. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.
[0024] like Figure 1 and Figure 2 As shown, this embodiment discloses a jumper insulator string, which includes an insulator 3. One end of the insulator 3 is fixed with a connecting component, and the other end is fixed with at least two sets of hardware assemblies for constraining split conductors. Multiple hardware assemblies are arranged in parallel.
[0025] When in use, the connecting components are fixed to the tower, and the four-split conductors are separated into two pairs and fixed by the corresponding hardware assembly, so as to smoothly transition into two double-split conductors and prevent the conductors from bending excessively.
[0026] In some embodiments, taking a 220kV line with 4×630 conductors (450mm split spacing) as an example, the first mounting plate 1 uses a UB mounting plate (UB-1080), a ball-head hanging ring 2 (QP-1050), and a composite insulator 3 (FXBW-220 / 120); the second mounting plate 4 uses a bowl-head mounting plate (WS-1085), a triangular connecting plate 5 (L-10-100 / 450); the third mounting plate 6 uses a ZBD mounting plate (ZBD-10-80), a suspension clamp 7 (XTS-6040); the protective tape 8 uses aluminum-clad tape (1×10); the fourth mounting plate 9 uses a parallel mounting plate (PS-0790), a counterweight seat 10 (FZJ-15), and a counterweight plate 11 (FZC-15Y); the jumper insulator string is connected to the tower through the first mounting plate, which is convenient for installation.
[0027] As attached Figure 1 As shown, in this embodiment, the connecting assembly includes a first hanging plate 1 and a ball-head hanging ring 2, which are movably connected. The ball-head hanging ring 2 is fixedly connected to the hardware assembly. A second hanging plate 4 and a triangular connecting plate 5 are connected to the insulator 3. The triangular connecting plate 5 and the second hanging plate 4 are fixedly connected. The hardware assembly is fixed to the triangular connecting plate 5. The two hardware assemblies are arranged along the axial direction of the insulator 3 and are evenly and symmetrically fixed on the triangular connecting plate 5. In a further embodiment, there is a 450mm gap between the connecting holes on the conductor side of the triangular connecting plate 5. When the two double-split conductors pass through the jumper string, they can be separated according to the 450mm gap, so as to further connect straight and smoothly to the double-split conductor crossarm support insulator 3 arranged in parallel on the conductor crossarm or downleader bracket of the cable terminal tower.
[0028] In this embodiment, the hardware assembly includes a third mounting plate 6 and a suspension clamp 7. The third mounting plate 6 is fixedly connected to a triangular connecting plate 5. The suspension clamp 7 is fixed at the end of the third mounting plate 6 away from the triangular connecting plate 5. The two suspension clamps 7 correspond to two groups of wires respectively. The four wires are divided into two groups. Each wire is fixed by passing through the locking hole of the suspension clamp 7.
[0029] In some embodiments, as shown in the appendix Figure 2 As shown, a protective tape 8 is fixed inside the locking hole of the suspension clamp 7. Here, aluminum tape is used to wrap the wire as a protective hardware.
[0030] In a further embodiment, the insulator string 3 also includes two counterweight devices, which are connected one-to-one with two sets of hardware assemblies. The counterweight devices can limit the wind-induced sway of the jumper wire, ensuring the stability of the jumper wire and the safety of the electrical clearance. The counterweight device includes a fourth mounting plate 9, a counterweight base 10, and a counterweight plate 11; the fourth mounting plate 9 and the counterweight base 10 are fixedly connected, the fourth mounting plate 9 is connected to the hardware assembly, and the counterweight plate 11 is mounted on the counterweight base 10.
[0031] Each counterweight device has three counterweight plates 11. In each counterweight device, the center points of the three counterweight plates 11 are arranged collinearly, and the axis of the counterweight device is parallel to the axis of the insulator 3.
[0032] The adoption of this method does not affect the construction progress, does not increase the construction difficulty, is easy to install, and has a clear and reasonable structure. It can be promoted in scenarios where it is necessary to convert the four-split conductor overhead line to a cable underground.
[0033] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.
Claims
1. A jumper insulator string, characterized in that, The insulator includes an insulator with a connecting component fixed at one end and at least two sets of hardware assemblies for constraining split conductors fixed at the other end, with multiple hardware assemblies arranged in parallel.
2. The jumper insulator string according to claim 1, characterized in that, The connecting assembly includes a first mounting plate and a ball-head hanging ring, which are movably connected and the ball-head hanging ring is fixedly connected to the hardware assembly.
3. The jumper insulator string according to claim 1, characterized in that, The insulator is connected to a second mounting plate and a triangular connecting plate, the triangular connecting plate and the second mounting plate are fixedly connected, and multiple hardware assemblies are fixed to the triangular connecting plate, the multiple hardware assemblies are arranged along the axial direction of the insulator.
4. The jumper insulator string according to claim 3, characterized in that, Multiple of the aforementioned hardware assemblies are uniformly and symmetrically fixed to the triangular connecting plate.
5. The jumper insulator string according to claim 3, characterized in that, The hardware assembly includes a third mounting plate and a suspension clamp. The third mounting plate is fixedly connected to the triangular connecting plate, and the suspension clamp is fixed to the end of the third mounting plate away from the triangular connecting plate.
6. The jumper insulator string according to claim 5, characterized in that, A protective strap is fixed inside the locking hole of the suspension clamp.
7. The jumper insulator string according to claim 1, characterized in that, The jumper insulator string also includes multiple counterweight devices, and each of the multiple counterweight devices is connected to a corresponding hardware assembly.
8. The jumper insulator string according to claim 7, characterized in that, The counterweight device includes a fourth hanging plate, a counterweight base, and a counterweight plate; The fourth hanging plate and the counterweight base are fixedly connected. The fourth hanging plate is connected to the hardware assembly, and the counterweight plate is installed on the counterweight base.
9. The jumper insulator string according to claim 8, characterized in that, Each of the aforementioned hammer devices comprises multiple hammer plates, and the center points of the multiple hammer plates are arranged collinearly in each of the aforementioned hammer devices.