Auxiliary shielding cover and high-voltage wire shielding structure

Abstract

The utility model relates to power equipment technical field, specifically disclose a kind of auxiliary shielding cover and high-voltage conductor shielding structure, high-voltage conductor shielding structure includes insulating protective tube and auxiliary shielding cover, and insulating protective tube is used to wrap high-voltage conductor;Auxiliary shielding cover is coated in the outside of insulating protective tube, and auxiliary shielding cover includes shielding main body, handle, guard plate and V-shaped plate assembly, wherein the inverted eight-character shape tightening passage formed by V-shaped plate and eight-character shape guide passage, by depressing handle drive V-shaped plate self-adapting to gather, realize the tool-free quick wrapping and disassembly of guard plate to the bottom of insulating protective tube;Shielding main body covers connection area completely, and the thickening in the middle section of protective tube is combined with shielding segmented coating design, and the creepage distance is promoted to above 150mm, and the risk of electric leakage is blocked;V-shaped plate mechanical locking and annular protrusion-groove cooperation structure ensure that shielding cover anti-vibration loosening and wind environment stability.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to an auxiliary shielding cover and a high-voltage conductor shielding structure. Background Technology

[0002] During live-line work on power distribution lines, insulating conduits serve as crucial safety protection equipment, primarily used to shield high-voltage conductors and reduce the risk of electric shock to power workers from contact with exposed conductors. While existing insulating conduits have played a vital role in practical applications, with the development of the power industry and the improvement of safety standards, some shortcomings have gradually emerged, affecting the safety and convenience of live-line work. Currently, the most common insulating conduits on the market include YS insulating conduits, which feature a black inner and yellow outer design, a push-in installation structure, a toothed closure design, and can be connected to flared bushings, offering good shielding performance and convenience. However, this type of product still has the following problems:

[0003] ① Insufficient creepage distance, failing to meet the latest national standard: According to the national standard (hereinafter referred to as "national standard"), the creepage distance of the overlapping part of the connection of 10kV power lines must reach 150mm. However, the creepage distance of the overlapping part of the YS insulated conduit is only 85mm, failing to meet the new standard requirement. Insufficient creepage distance may lead to uneven electric field distribution between conductors, thereby increasing the risk of electric shock and affecting operational safety.

[0004] ② Market alternatives are costly and economically inefficient: To meet the new national standards, some manufacturers have introduced improved insulating protective pipes, which employ a multi-layer composite insulation structure. While these products provide sufficient creepage distance, their cost is high. Since power distribution line maintenance requires a large number of such protective devices, the overall procurement cost is significant, increasing the financial burden on power operation and maintenance units. Furthermore, these products are large and heavy, causing inconvenience for on-site transport and installation, and reducing operational efficiency.

[0005] ③ Existing shielding installation methods are complex, affecting ease of operation: Traditional insulating pipes are mostly fixed with fasteners or bolts. This method requires additional tools and involves cumbersome steps during installation and disassembly, increasing working time and labor intensity. Especially in high-altitude working environments, the complex installation process may lead to prolonged exposure of workers to a live environment, increasing safety risks. In addition, some fixing methods may loosen after prolonged use, affecting the protective performance of the shielding.

[0006] ④ Lack of cost-effective optimization solutions: At present, there is no auxiliary shielding solution on the market that combines high cost-effectiveness, convenient installation and excellent weather resistance, which can meet the requirements of the new national standard, reduce equipment costs and improve the ease of operation for operators.

[0007] Therefore, developing an economical, efficient, easy-to-install, and safety-compliant insulated conduit joint auxiliary shield is of great significance for improving the safety and efficiency of power operations. Utility Model Content

[0008] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an auxiliary shielding cover and a high-voltage conductor shielding structure to meet the creepage distance requirements, improve safety, optimize installation convenience and material weather resistance, reduce costs, and provide a better protection solution for live-line work.

[0009] An auxiliary shielding shield, comprising:

[0010] The shielding body has a handle attached to its top and an opening extending along its length at its bottom;

[0011] The bottom wrapping module includes two protective plates, which are respectively connected to the two free ends of the bottom of the shielding body and located on both sides of the opening width direction;

[0012] The bottom taper module includes two mirror-symmetrical V-shaped plates, which are respectively connected to the lower ends of the two guard plates. The two V-shaped plates form an inverted V-shaped tightening channel at the top and a V-shaped guide channel at the bottom.

[0013] Specifically, the shielding body and the handle are integrally formed.

[0014] Specifically, the length of the shielding body is 150-300mm.

[0015] A high-voltage conductor shielding structure includes:

[0016] Insulating conduit, used to wrap high-voltage conductors;

[0017] An auxiliary shielding cover is provided, which covers the outside of the insulating sheath.

[0018] Specifically, the insulating sheath includes a middle section and two edge sections on both sides, wherein the thickness of the middle section is greater than that of the edge sections.

[0019] The shielding body includes a shielding middle section and shielding edge sections on both sides. The shielding middle section covers the shielding middle section, and the shielding edge sections cover the shielding edge sections.

[0020] Specifically, the middle section of the protective tube is provided with a first annular protrusion, the inner side of which corresponds to the high-voltage wire connection point;

[0021] The shielding middle section is provided with an annular groove that mates with the first annular protrusion.

[0022] Specifically, the middle section of the protective tube is provided with a second annular protrusion;

[0023] The shielding middle section is provided with a clearance groove for the second annular protrusion to engage.

[0024] The beneficial effects of this utility model are:

[0025] This application discloses an auxiliary shielding cover and a high-voltage conductor shielding structure. The high-voltage conductor shielding structure includes an insulating sheath and an auxiliary shielding cover. The insulating sheath is used to wrap the high-voltage conductor. The auxiliary shielding cover covers the outside of the insulating sheath and includes a shielding body, a handle, a protective plate, and a V-shaped plate. The V-shaped plate forms an inverted V-shaped tightening channel and a V-shaped guiding channel. By pressing down the handle, the V-shaped plate is driven to self-adaptively retract, enabling tool-free and rapid wrapping and removal of the protective plate from the bottom of the insulating sheath. The shielding body completely covers the connection area. Combined with the thickened middle section of the sheath and the segmented shielding design, the creepage distance is increased to over 150mm, blocking the risk of leakage. The mechanical locking of the V-shaped plate and the annular protrusion-groove mating structure ensure the shielding cover's resistance to vibration and loosening, as well as its stability in strong wind environments. Attached Figure Description

[0026] Figure 1 This is a perspective view of the high-voltage conductor shielding structure of this application;

[0027] Figure 2 This is an exploded view of the high-voltage conductor shielding structure of this application;

[0028] Figure 3 This is a left view of the high-voltage conductor shielding structure of this application;

[0029] Figure 4 for Figure 3 A cross-sectional view of plane AA.

[0030] The attached figures are labeled as follows: shielding body 10, handle 20, protective plate 30, V-shaped plate 40, inverted V-shaped tightening channel 41, V-shaped guide channel 42, insulating protective tube 50, middle section of protective tube 51, edge section of protective tube 52, shielding middle section 11, shielding edge section 12, first annular protrusion 511, annular groove 111, second annular protrusion 512, and clearance groove 112. Detailed Implementation

[0031] This utility model provides an auxiliary shielding cover and a high-voltage conductor shielding structure. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0033] Please refer to Figure 1 This embodiment discloses a high-voltage conductor shielding structure, including an insulating sheath 50 and an auxiliary shielding cover. The insulating sheath 50 is used to wrap the high-voltage conductor; the auxiliary shielding cover covers the outside of the insulating sheath 50.

[0034] Please refer to Figure 2 The auxiliary shielding cover includes a shielding body 10, a bottom wrapping module, and a bottom closing module. The top of the shielding body 10 is connected to a handle 20, and the bottom has an opening extending along its length. The bottom wrapping module includes two protective plates 30, which are respectively connected to the two free ends of the bottom of the shielding body 10 and located on both sides of the opening width. The bottom closing module includes two mirror-symmetrical V-shaped plates 40, which are respectively connected to the lower ends of the two protective plates 30. Between the two V-shaped plates 40, an inverted V-shaped tightening channel 41 is formed at the upper part, and a V-shaped guide channel 42 is formed at the lower part (e.g., ...). Figure 3 (As shown).

[0035] During installation, the operator holds the auxiliary shielding cover with the handle 20, aligning its opening with the surface of the insulating tube 50, and uses the figure-eight guide channel 42 formed by the V-shaped plate 40 to guide and position it naturally. When downward pressure is applied, the inverted figure-eight tightening channel 41 forces the two V-shaped plates 40 to retract inward, causing the protective plate 30 to tightly wrap around both sides of the insulating tube 50, ultimately ensuring that the protective plate 30 completely covers the bottom edge of the insulating tube 50.

[0036] During disassembly, the handle 20 is pulled in the opposite direction, and the V-shaped plate 40 expands and detaches from the insulating protective tube 50 with external force, achieving rapid separation; installation and disassembly can be done quickly without additional tools, reducing operation time and improving work efficiency.

[0037] This structure, through the shielding body extending over 150mm in length and the extension design of the protective plate 30, increases the creepage distance at the connection of the insulating protective tube 50 from 85mm to over 150mm, meeting national standards, reducing the risk of electric shock, and improving the safety of electrical operations.

[0038] The self-adaptive retraction and extension characteristics of the V-shaped plate 40 allow for tool-free installation, and the mechanical design of the inverted V-shaped tightening channel 41 prevents the protective plate 30 from accidentally loosening during operation, ensuring shielding stability. Meanwhile, the auxiliary shielding cover can be made of high-insulation materials such as silicone rubber and epoxy resin, which are resistant to high temperatures, moisture, and ultraviolet rays, ensuring that it will not age or crack during long-term outdoor use, maintaining good insulation performance and mechanical strength, and reducing maintenance costs.

[0039] The auxiliary shielding cover adopts a modular design, is compatible with most insulating tubes 50 on the market, and can be flexibly adapted to different models of insulating tubes 50, enhancing its practicality.

[0040] Please refer to Figure 2 The shielding body 10 and the handle 20 are integrally formed. The shielding body 10 and the handle 20 are preferably made of silicone rubber. The shielding body 10 made of silicone rubber reduces manufacturing costs through an integral molding process on the basis of lightweighting, and solves the problems of poor economy and insufficient portability of existing alternatives.

[0041] The length of the shielding body 10 is 150-300mm, which can be flexibly adapted to the length of the conductor connection at different voltage levels: 150mm meets the national standard minimum requirement of 150mm creepage distance for overlapping parts of 10kV line connections, while 300mm length can cover the extended protection needs of higher voltage levels (such as 20kV) or complex environments (such as multi-branch joints).

[0042] Please refer to Figure 2 The insulating sheath 50 includes a middle section 51 and two side edge sections 52, with the middle section 51 being thicker than the edge sections 52. The shielding body 10 includes a shielding middle section 11 and two side edge sections 12, with the middle section 11 covering the middle section 51 and the edge sections 12 covering the edge sections 52. The thickened design of the middle section 51 and the precise covering of the shielding middle section 11 form a double insulation reinforcement zone, which can improve the electric field uniformity at the conductor connection. The thin-walled structure of the edge sections 52 and the extended coverage of the shielding edge sections 12 work together to reduce the overall weight while blocking the creepage path along the edge sections 52. The segmented thickness matching disperses the deformation stress of the shielding body 10 and the insulating sheath 50, avoiding installation interference caused by excessive local thickness. Combined with the self-adjusting inverted V-shaped tightening channel 41 of the V-shaped plate 40, it ensures stable sealing of the auxiliary shielding cover under complex working conditions.

[0043] Please refer to Figure 4The middle section 51 of the protective tube is provided with a first annular protrusion 511, the inner side of which corresponds to the high-voltage conductor connection point; the middle shielding section 11 is provided with an annular groove 111 that cooperates with the first annular protrusion 511. The cooperation between the first annular protrusion 511 and the annular groove 111 forms an adaptive locking structure, which not only fixes the relative position of the shield and the insulating protective tube 50 through mechanical fitting to prevent displacement caused by vibration during operation, but also extends the creepage path at the connection point by utilizing the annular curved surface of the protrusion-groove. After the two are combined, the electric field distortion on the inner side of the connection point is evenly dispersed by the insulation layer of the annular groove 111, and the surface leakage current on the outer side is suppressed by the double blocking of the protrusion and groove, thus simultaneously improving mechanical stability and insulation safety.

[0044] Please refer to Figure 4 The middle section 51 of the protective tube is provided with a second annular protrusion 512; the middle section 11 of the shielding is provided with a clearance groove 112 for the second annular protrusion 512 to engage. The engagement design of the second annular protrusion 512 and the clearance groove 112 enables rapid positioning and installation of the auxiliary shielding cover and the insulating protective tube 50. The clearance space of the clearance groove 112 allows the second annular protrusion 512 to self-adjust during engagement, avoiding installation interference caused by deformation of the insulating protective tube 50. At the same time, the misalignment and interlocking of the protrusion and the groove disperse the mechanical stress at the joint, enhancing the auxiliary shielding cover's resistance to pull-out.

[0045] The preferred embodiments of this utility model have been described in detail above. However, this invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this invention.

Claims

1. An auxiliary shielding cover, characterized in that, include: The shielding body (10) has a handle (20) connected to its top and an opening extending along its length at its bottom; The bottom wrapping module includes two protective plates (30), which are respectively connected to the two free ends of the bottom of the shielding body (10) and located on both sides of the opening width direction; The bottom closing module includes two mirror-symmetrical V-shaped plates (40), which are respectively connected to the lower ends of the two guard plates (30). The two V-shaped plates (40) form an inverted V-shaped tightening channel (41) at the top and a V-shaped guide channel (42) at the bottom.

2. The auxiliary shielding cover according to claim 1, characterized in that: The shielding body (10) and the handle (20) are integrally formed.

3. The auxiliary shielding cover according to claim 1, characterized in that: The length of the shielding body (10) is 150-300mm.

4. A high-voltage conductor shielding structure, characterized in that, include: Insulating sheath (50) is used to wrap high-voltage conductors; The auxiliary shield as described in any one of claims 1-3, wherein the auxiliary shield covers the outside of the insulating sheath (50).

5. The high-voltage conductor shielding structure according to claim 4, characterized in that: The insulating sheath (50) includes a middle section (51) and two edge sections (52) on both sides, wherein the thickness of the middle section (51) is greater than that of the edge sections (52). The shielding body (10) includes a shielding middle section (11) and shielding edge sections (12) on both sides. The shielding middle section (11) covers the shielding tube middle section (51), and the shielding edge sections (12) cover the shielding tube edge sections (52).

6. The high-voltage conductor shielding structure according to claim 5, characterized in that: The middle section (51) of the protective pipe is provided with a first annular protrusion (511), the inner side of which corresponds to the high-voltage wire connection point; The shielding middle section (11) is provided with an annular groove (111) that cooperates with the first annular protrusion (511).

7. The high-voltage conductor shielding structure according to claim 5, characterized in that: The middle section (51) of the protective tube is provided with a second annular protrusion (512); The shielding middle section (11) is provided with an air-proof groove (112) for the second annular protrusion (512) to be inserted.

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