Current collection line cable head protection structure
By designing a protective sleeve structure made of PTFE hard plastic and a retractable extension tube, the corrosion problem of intermediate joints in power line cables was solved, achieving stability and convenient replacement of cable joints, and improving the service life and ease of operation of cable joints.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 内蒙古华电辉腾锡勒风力发电有限公司
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-01
AI Technical Summary
Intermediate joints in power transmission line cables are susceptible to corrosion from harsh external environments, affecting the service life and stability of the cable joints. Furthermore, replacement operations require disconnecting the line, which disrupts power transmission operations.
A protective sleeve structure including a protective cylinder and a retractable extension cylinder was designed. It is fixed by bolts and nuts, adaptable to cable joints of different sizes and specifications, and has flexible adjustment and stable connection. The protective cylinder is made of polytetrafluoroethylene hard plastic, which is corrosion resistant, lightweight and convenient.
It achieves effective protection of cable joints, extends service life, ensures stability, and allows for replacement without power outages or wire disconnections, thus improving operational convenience.
Smart Images
Figure CN224191623U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable protection technology, specifically a cable head protection structure for power collection lines. Background Technology
[0002] Cable joints, also known as cable terminations, are the points where sections of a cable, after being laid, must be connected to form a continuous line. These connections are called cable joints. Cable joints located in the middle of a cable line are called intermediate joints, while those at the ends of the line are called terminal joints.
[0003] Due to the specific environmental requirements of wind farms, the surrounding natural environment is generally harsh, and the geographical location is often remote. High temperatures, extreme cold, high wind speeds, sandstorms, salt spray, rain, snow, freezing, and lightning have a significant impact on power transmission facilities. In particular, the intermediate joints of the collector cables are susceptible to corrosion from the external environment, and replacement operations require disconnecting the wires, which significantly affects power transmission and requires improvement.
[0004] To address these issues, we propose a protective structure for the cable head of a current collector line. Utility Model Content
[0005] The purpose of this utility model is to provide a protective structure for cable heads of power collection lines, which can effectively protect against external corrosive environments, ensure the service life and stability of cable joints, and solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective structure for a current collector cable head, comprising a protective cylinder for covering the cable joint, wherein a retractable extension cylinder is connected to the protective cylinder to form a protective sleeve with an adjustable length; the protective sleeve is detachable and is constrained at its edge by a fixed seat.
[0007] As an optional solution to the cable head protection structure of the current collector line described in this utility model, the protective cylinder is a hollow cylindrical structure and is set as a polytetrafluoroethylene hard plastic cylinder.
[0008] As an optional solution of the cable head protection structure of the current collector line described in this utility model, there are two extension cylinders symmetrically arranged, and one end of each extension cylinder is slidably inserted into the port of the protective cylinder, forming a sleeve at the outer end of the extension cylinder.
[0009] As an optional solution to the cable head protection structure of the current collector line described in this utility model, the protective cylinder and the extension cylinder are both configured as a cylindrical structure composed of upper and lower half discs.
[0010] As an optional solution of the cable head protection structure of the current collection line described in this utility model, the edges of the protective cylinder and the extension cylinder are folded to form folded edges, and a number of mounting holes are opened at equal intervals on the folded edges. Bolts and nuts are installed in each mounting hole in the vertical direction.
[0011] As an optional solution of the cable head protection structure of the current collection line described in this utility model, the inner wall of the protective cylinder is provided with a guide groove, and the extension cylinder is integrally connected with a sliding strip corresponding to the guide groove, and the sliding strip is slidably connected along the guide groove.
[0012] As an optional solution to the cable head protection structure of the current collector line described in this utility model, the guide groove is configured as a dovetail groove, and the slide bar is configured as a trapezoidal structure accordingly.
[0013] As an optional solution of the cable head protection structure of the current collector line described in this utility model, wherein: the folded edge of the extension tube is aligned with the folded edge of the protective tube without exceeding it, and a notch is left in the middle of the edge of the protective tube.
[0014] As an optional solution of the cable head protection structure of the current collection line described in this utility model, the fixing seat is a strip-shaped seat that fits into the notch. The seat body has a through hole that matches the mounting hole. The through hole is fixedly connected to the mounting hole on the edge of the protective cylinder by bolts and nuts.
[0015] As an optional solution of the cable head protection structure of the current collection line described in this utility model, wherein: the four corners of the fixing base are integrally provided with arc-shaped protruding locking pins, and the four folded edges of the extension cylinder at the notch are respectively provided with pin holes, the central angle of the cross-section of the pin hole exceeds 180°, and the locking pin is inserted into the pin hole.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This cable head protection structure for power collection lines features a split, adjustable cylindrical protective sleeve installed at the cable joint. Installation is convenient and stable, adaptable to cable joints of different sizes and specifications. It effectively protects against corrosive external environments, ensuring the cable joint's service life and stability. Furthermore, it can be individually removed after prolonged use without disconnecting power or wires, making it easy to use. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the main structure of the present invention when it is not installed;
[0020] Figure 3 This is a schematic diagram of the exploded structure of this utility model;
[0021] Figure 4 This is a schematic diagram of a partially unfolded structure of the present invention;
[0022] Figure 5 This is a schematic diagram of the front view structure of the present invention with the notch unfolded.
[0023] In the diagram: 1. Protective cylinder; 2. Extension cylinder; 3. Sleeve opening; 4. Folded edge; 5. Guide groove; 6. Sliding strip; 7. Mounting hole; 8. Bolt; 9. Nut; 10. Notch; 11. Fixing base; 12. Through hole; 13. Locking pin; 14. Pin hole. Detailed Implementation
[0024] 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.
[0025] Please see Figures 1-5 This utility model provides a technical solution: a protective structure for the cable head of a power line, including a protective cylinder 1 for covering the cable joint, and a telescopic extension cylinder 2 connected to the protective cylinder 1 to form a protective sleeve with adjustable length; the protective sleeve is detachable and is limited and constrained at the edge by a fixing seat 11.
[0026] Among them, the protective cylinder 1 is a hollow cylindrical structure, made of polytetrafluoroethylene hard plastic, and is used to protect the cable joint from external damage.
[0027] In this embodiment, two extension tubes 2 are symmetrically arranged. One end of each extension tube 2 is slidably inserted into the port of the protective tube 1. A sleeve 3 is formed at the outer end of the extension tube 2. The sleeve 3 is used to fit onto the cable, so that the protective sleeve can be installed on the cable joint.
[0028] That is, an extension tube 2 is slidably connected to each end of the protective tube 1 to form a protective sleeve with adjustable length, which can adapt to cable joints of different lengths and sizes for outer protection.
[0029] Note: Extension tube 2 is also a rigid PTFE plastic tube, which is lightweight, corrosion-resistant, and easy to use.
[0030] In this embodiment, both the protective cylinder 1 and the extension cylinder 2 are configured as a cylindrical structure composed of upper and lower half-discs, so that the protective cylinder 1 and the extension cylinder 2 can be used for outer protection after the cable joint is installed, and can also be removed and replaced separately after long-term use without disconnecting the power or wires, making them convenient to use.
[0031] Furthermore, the edges of both the protective cylinder 1 and the extension cylinder 2 are folded to form folded edges 4. Several mounting holes 7 are equally spaced on the folded edges 4. Bolts 8 and nuts 9 are installed in each mounting hole 7 in the vertical direction, so that the upper and lower halves of the protective sleeve are combined and fixed.
[0032] To facilitate length adjustment of the protective sleeve:
[0033] In this embodiment, a guide groove 5 is provided on the inner wall of the protective cylinder 1, and a slide bar 6 is integrally connected to the extension cylinder 2 corresponding to the guide groove 5. The slide bar 6 is slidably connected along the guide groove 5, so that the extension cylinder 2 is stably guided and moved at the end of the protective cylinder 1, and the extension and retraction are stable.
[0034] Furthermore, the guide groove 5 is set as a dovetail groove, and the slide bar 6 is set as a trapezoidal structure accordingly. With the cooperation of the slide bar 6 and the guide groove 5, the extension cylinder 2 is stably hooked inside the protective cylinder 1 and can only move and extend stably along the cylinder axis, so the structure is stable.
[0035] In this embodiment, the folded edge 4 of the extension tube 2 is aligned with the folded edge 4 of the protective tube 1 without exceeding it, and a notch 10 is left in the middle of the edge of the protective tube 1.
[0036] It should be noted that after the extension tubes 2 at both ends of the protective tube 1 are pulled outward, a distance is created between the two extension tubes 2, forming a blank area on the protective tube 1, namely the notch 10.
[0037] The fixed seat 11 is a strip-shaped seat that fits into the notch 10. The seat body has a through hole 12 that matches the mounting hole 7. The through hole 12 is fixedly connected to the mounting hole 7 on the edge of the protective cylinder 1 by bolts 8 and nuts 9.
[0038] That is, the mounting holes 7 on the folded edge 4 not only serve as a means of fixing the cylinder, but also as a basis for the movement of the extension cylinder 2. Each movement is based on the position of at least one mounting hole 7 to ensure the installation and fixation after the movement.
[0039] Similarly, the mounting base 11 uses different sizes according to the different lengths of the notch 10, and the spacing between the through holes 12 on the mounting base 11 and the spacing between the mounting holes 7 are the same, so that they can be used in a corresponding manner to avoid misalignment during installation.
[0040] Furthermore, each of the four corners of the fixed base 11 is integrally provided with an arc-shaped protruding locking pin 13, and each of the four folded edges of the extension tube 2 at the notch 10 is provided with a corresponding pin hole 14. The central angle of the cross-section of the pin hole 14 exceeds 180°, and the locking pin 13 is inserted into the pin hole 14.
[0041] That is, after the protective sleeve is placed on the cable joint, the extension tube 2 is stretched according to the usage requirements to properly cover the cable joint. Then, it is inserted from the outside into the notch 10 through the fixing seat 11. With the cooperation of the locking pin 13 and the pin hole 14, when the central angle of the cross-section of the pin hole 14 exceeds 180°, the extension tube 2 is locked and fixed in the lateral direction. There is no need to worry about the extension tube 2 moving around, which strengthens the stability of the connection structure. The tube can be installed quickly and efficiently and fixed on the cable joint. It is easy to operate and also effectively protects against external corrosive environments, ensuring the service life and stability of the cable joint.
[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A protective structure for cable heads in power collection lines, characterized in that: It includes a protective sleeve (1) for the outer cable connector, and a telescopic extension sleeve (2) is connected to the protective sleeve (1) to form a protective sleeve with adjustable length; the protective sleeve is detachable and is limited and constrained at the edge by a fixing seat (11).
2. A power line cable head protection structure according to claim 1, characterized in that: The protective cylinder (1) has a hollow cylindrical structure and is made of polytetrafluoroethylene hard plastic.
3. A power line cable head protection structure according to claim 2, characterized in that: Two extension tubes (2) are symmetrically arranged. One end of each extension tube (2) is slidably inserted into the port of the protective tube (1), forming a sleeve (3) at the outer end of the extension tube (2).
4. The cable head protection structure for a current collector line according to claim 3, characterized in that: Both the protective cylinder (1) and the extension cylinder (2) are configured as a cylindrical structure composed of upper and lower half-discs.
5. The cable head protection structure for a current collector line according to claim 4, characterized in that: The edges of the protective cylinder (1) and the extension cylinder (2) are folded to form folded edges (4). Several mounting holes (7) are opened at equal intervals on the folded edges (4). Bolts (8) and nuts (9) are installed in each mounting hole (7) in the vertical direction.
6. The cable head protection structure for a current collector line according to claim 5, characterized in that: The inner wall of the protective cylinder (1) is provided with a guide groove (5), and the extension cylinder (2) is integrally connected with a slide bar (6) corresponding to the guide groove (5). The slide bar (6) is slidably connected along the guide groove (5).
7. The cable head protection structure for a current collector line according to claim 6, characterized in that: The guide groove (5) is configured as a dovetail groove, and the slide bar (6) is configured as a trapezoidal structure.
8. A power line cable head protection structure according to claim 7, characterized in that: The folded edge (4) of the extension tube (2) is aligned with the folded edge (4) of the protective tube (1) without exceeding it, and a notch (10) is left in the middle of the edge of the protective tube (1).
9. A power line cable head protection structure according to claim 8, characterised in that: The fixing seat (11) is a strip-shaped seat that fits into the notch (10). The seat body has a through hole (12) that matches the mounting hole (7). The through hole (12) and the mounting hole (7) on the edge of the protective cylinder (1) are fixedly connected by bolts (8) and nuts (9).
10. A cable head protection structure for a current collector line according to claim 9, characterized in that: The four corners of the fixed base (11) are integrally provided with arc-shaped protruding locking pins (13), and the four folded edges of the extension tube (2) at the notch (10) are respectively provided with pin holes (14). The central angle of the cross-section of the pin hole (14) exceeds 180°, and the locking pin (13) is inserted into the pin hole (14).