Novel line post insulator
By using modified composite materials and integral injection molding of pipeline clamps, the problems of complex construction and wear of line post insulators have been solved, achieving rapid installation and improved insulation performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-03-03
AI Technical Summary
Existing line post insulators are prone to wear at the contact point between the conductor and the metal fittings, leading to discharge phenomena. Furthermore, their construction is complex, affecting insulation performance and safety.
The upper accessory and pipeline clamp are made of a new type of modified composite material. The conductor is inserted into the pipeline clamp through the opening and then rotated 180 degrees for installation. Combined with the integrally injection-molded umbrella skirt sheath, the insulation performance and construction efficiency are improved.
It simplifies the construction process, reduces conductor wear, improves the arc distance and electric field distribution uniformity of insulators, and enhances insulation performance and anti-pollution capabilities.
Smart Images
Figure CN223967080U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power transmission and distribution line insulator technology, specifically a new type of line post insulator. Background Technology
[0002] Line post insulators are widely used in power transmission and distribution lines. In overhead transmission lines, they must withstand not only working voltage and overvoltage, but also the load and tension of the conductors. The line post insulators used in existing transmission lines mostly use hot-dip galvanized metal parts for their upper accessories. They are mostly installed using pressure plates or binding methods, which makes on-site construction more complicated. Furthermore, the conductors are directly connected to the conductor slots on the top of the insulator accessories. On the contact surface between the conductors and the conductor slots on the top of the insulator accessories, the insulation of the conductors rubs against the metal parts for a long time, causing the insulation to break. Under operating voltage, this can easily lead to discharge phenomena. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a novel line post insulator that solves the aforementioned problems.
[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel line post insulator, comprising an insulating core rod, the insulating core rod being provided with an outer shed sheath, an upper accessory and a lower accessory being fixedly connected to the top and bottom ends of the insulating core rod respectively, and a pipeline clamp being rotatably connected inside the upper accessory;
[0005] The pipeline clamp includes a main body with an opening and a placement groove inside. Both ends of the main body are fixedly connected to protruding skirts.
[0006] Preferably, the upper accessory has a slot inside, the slot matches the pipeline sleeve, and the pipeline sleeve is rotatably connected to the slot, so that the pipeline sleeve can rotate, thereby facilitating the insertion of wires.
[0007] Preferably, the dimensions of the upper accessory match the outer dimensions of the pipeline clamp, so that the pipeline clamp can be inserted into the upper accessory.
[0008] Preferably, the inner surface of the pipeline clamp is set as an arc surface, and the inner size matches the diameter of the wire, so that the wire can be inserted into the pipeline clamp.
[0009] Preferably, the umbrella skirt cover includes a large umbrella, a medium umbrella, and a small umbrella, and the umbrella skirt cover covers the insulating core rod, the upper accessory, and the lower accessory.
[0010] Preferably, the pipeline clamp is integrally injection molded, which facilitates mass production.
[0011] This utility model provides a novel post-type insulator for power lines. Compared with the prior art, it has the following advantages:
[0012] 1. This new type of line post insulator allows for quick installation of the conductor by inserting it into the conduit sleeve through an opening, and then rotating the conduit sleeve 180 degrees so that the opening faces downwards. On-site construction is simple, fast, and saves time and effort.
[0013] 2. This new type of line post insulator uses a new modified composite material for its upper accessory. The upper accessory and the pipeline clamp are made of a similar material to the insulation of the conductor. Without changing the overall product structure, it is not easily worn, the arc distance of the insulator is increased, the power frequency withstand voltage and impulse withstand voltage of the insulator are significantly improved, and the electric field distribution at the upper end of the insulator is more uniform. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model without the wires installed;
[0015] Figure 2 This is a schematic diagram of the structure of this utility model when installing wires;
[0016] Figure 3 This is a schematic diagram of the structure of the pipeline clamp of this utility model.
[0017] In the diagram: 1. Upper accessory; 2. Pipeline clamp; 21. Main body; 22. Opening; 23. Placement slot; 24. Protruding skirt; 3. Insulating core rod; 4. Lower accessory; 5. Umbrella skirt sheath; 51. Large umbrella; 52. Medium umbrella; 53. Small umbrella. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figure 1-3This utility model provides a technical solution: a novel line post insulator, comprising an insulating core rod 3, with an outer sheath 5 for the insulating core rod 3. An upper attachment 1 and a lower attachment 4 are fixedly connected to the top and bottom ends of the insulating core rod 3, respectively. A pipeline clamp 2 is rotatably connected inside the upper attachment 1. The materials used for the upper attachment 1 and the pipeline clamp 2 are novel modified composite materials, similar to the insulation of the conductor. Without changing the overall product structure, they are not easily worn. The arc distance of the insulator is lengthened, and the power frequency withstand voltage and impulse withstand voltage of the insulator are significantly improved. Furthermore, the electric field distribution at the upper end of the insulator is more uniform. The pipeline clamp 2 is integrally injection molded, facilitating mass production. A slot is opened inside the upper attachment 1, which connects to the pipeline clamp. The upper accessory 1 matches the outer dimensions of the upper accessory 2, allowing the upper accessory 2 to be rotatably connected to the slot, thus facilitating the insertion of the wire. The inner surface of the upper accessory 2 is set as an arc surface, and its inner dimensions match the diameter of the wire, allowing the wire to be inserted into the upper accessory 1. The umbrella skirt 5 includes a large umbrella 51, a medium umbrella 52, and a small umbrella 53. The umbrella skirt 5 covers the insulating core rod 3, the upper accessory 1, and the lower accessory 4. The large umbrella 51, the medium umbrella 52, and the small umbrella 53 are arranged sequentially from top to bottom. The diameter of the large umbrella 51 is larger than that of the other umbrellas, which can prevent dirt bridging under special weather conditions and improve the product's anti-fouling performance.
[0020] The pipeline clamp 2 includes a main body 21 with an opening 22 for easy insertion of wires. The main body 21 has a placement groove 23 for placing wires. Both ends of the main body 21 are fixedly connected to protruding skirts 24, which limit the movement of the main body 21 and prevent it from moving axially after being inserted into the upper accessory 1, thus improving stability.
[0021] The upper attachment 1 is made by integral injection molding and connecting it to one end of the insulating core rod 3 to obtain a semi-finished core body containing the upper attachment 1. The pipeline sleeve 2 is inserted into the slot of the upper attachment 1. The other end of the insulating core rod 3, which contains the upper attachment 1 and the pipeline sleeve 2, is connected to the lower attachment 4 by pressing to obtain a finished core body. The umbrella skirt sheath 5 is integrally injected onto the finished core body to obtain a new type of line post insulator.
[0022] During operation, the wire is inserted into the conduit clamp 2 through the opening 22, and then the conduit clamp 2 is rotated 180 degrees so that the opening 22 faces downwards, allowing for quick installation of the wire. On-site construction is simple, fast, and saves time and effort.
[0023] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
Claims
1. A novel line post insulator, comprising an insulating core rod (3), characterized in that: The insulating core rod (3) is provided with an umbrella skirt sleeve (5) on the outside. The top and bottom ends of the insulating core rod (3) are respectively fixedly connected with an upper accessory (1) and a lower accessory (4). The upper accessory (1) is rotatably connected with a pipeline clamp sleeve (2). The pipeline clamp (2) includes a main body (21), an opening (22) on the main body (21), a placement groove (23) inside the main body (21), and protruding skirts (24) fixedly connected to both ends of the main body (21).
2. The novel line post insulator according to claim 1, characterized in that: The upper accessory (1) has a slot inside, which matches the pipeline sleeve (2), and the pipeline sleeve (2) is rotatably connected to the slot.
3. A novel line post insulator according to claim 1, characterized in that: The dimensions of the upper accessory (1) match the outer dimensions of the pipeline clamp (2).
4. A novel line post insulator according to claim 1, characterized in that: The inner surface of the pipeline clamp (2) is set as an arc surface, and the inner size matches the diameter of the wire.
5. A novel post-type insulator according to claim 1, characterized in that: The umbrella skirt cover (5) includes a large umbrella (51), a medium umbrella (52) and a small umbrella (53), and the umbrella skirt cover (5) covers the insulating core rod (3), the upper accessory (1) and the lower accessory (4).
6. A novel line post insulator according to claim 1, characterized in that: The pipeline clamp (2) is integrally injection molded.