Durable overhead insulated conductor

Abstract

This invention relates to the field of insulated conductor technology and proposes a durable overhead insulated conductor, including an overhead insulated conductor body, an abutment ring frame, a fixing ring, and a transmission thread assembly. The abutment ring frame abuts against the middle of the overhead insulated conductor body. The fixing ring is slidably disposed on the outer side of the overhead insulated conductor body. A traction spiral wire is disposed between the fixing ring and the abutment ring frame. Moving the fixing ring drives the traction spiral wire and the abutment ring frame to pull the middle of the overhead insulated conductor body. A transmission thread assembly is disposed on the side of the fixing ring away from the abutment ring frame. A threaded rotating seat is disposed on the outer side of the overhead insulated conductor body, and the threaded rotating seat is in transmission engagement with the transmission thread assembly. This technical solution solves the problem in the prior art where, during long-distance laying of overhead insulated conductors, damage occurs due to the middle of the overhead insulated conductor sinking and the low-strength connection method.

Description

Technical Field

[0001] This invention relates to the field of insulated conductor technology, and more specifically, to a durable overhead insulated conductor. Background Technology

[0002] Overhead insulated conductors are conductors used in overhead power lines with AC rated voltage of 35 kV and below. They are widely used in urban streets, high-rise building areas, and forest areas where safety requirements are high. The conductors of overhead insulated conductors are mostly aluminum core or steel core aluminum stranded structure to reduce the overall weight of the overhead insulated conductor and maintain sufficient electrical performance. Insulation materials such as polyvinyl chloride (PVC), polyethylene (PE), or cross-linked polyethylene (XLPE) are extruded on the outer layer of the conductor, giving the overhead insulated conductor good mechanical strength, high temperature resistance, and aging resistance. In addition, the conductor core of the overhead insulated conductor is relatively thin, which reduces the stress on the overhead insulated conductor and improves the installation strength of the overhead insulated conductor.

[0003] During the installation of overhead insulated conductors, in order to ensure the power transmission strength, it is usually necessary to wrap both ends of the overhead insulated conductors several times around the overhead power line when installing them between two overhead power lines. This ensures the installation strength and improves the installation stability. However, because the overhead insulated conductors are electrically connected between two overhead power lines that are far apart, the middle of the overhead insulated conductor is prone to sinking during long-distance laying. This increases the stress on both sides of the conductor, and the conductor inside the conductor is prone to breakage after being subjected to stress for a long time, affecting the normal use of the overhead insulated conductor. Summary of the Invention

[0004] This invention proposes a durable overhead insulated conductor, which solves the problem in the prior art that overhead insulated conductors are damaged when laid over long distances due to the sinking of the middle section and the low-strength connection method.

[0005] The technical solution of the present invention is as follows: A durable overhead insulated conductor, comprising an overhead insulated conductor body, and further comprising:

[0006] The abutting ring frame abuts against the middle part of the overhead insulated conductor body;

[0007] A fixing ring is slidably disposed on the outside of the overhead insulated conductor body. A traction spiral wire is provided between the fixing ring and the abutting ring frame. Moving the fixing ring causes the traction spiral wire and the abutting ring frame to pull the middle part of the overhead insulated conductor body.

[0008] The transmission thread assembly is provided on the side of the fixed ring away from the abutment ring frame, and a threaded rotating seat is provided on the outer side of the overhead insulated wire body. The threaded rotating seat is in transmission cooperation with the transmission thread assembly, driving the fixed ring, the traction spiral wire and the abutment ring frame to move.

[0009] At least one embodiment of the present invention provides a durable overhead insulated conductor, the overhead insulated conductor body including a conductor, a cross-linked polyethylene insulation layer extruded on the outer side of the conductor, and an outer sheath provided on the outer arc surface of the cross-linked polyethylene insulation layer.

[0010] At least one embodiment of the present invention provides a durable overhead insulated conductor, wherein a damping ring is provided on the inner side of the abutment ring frame, and two connected semi-circular fasteners are provided on the inner wall of the abutment ring frame. The semi-circular fasteners press the damping ring to fit against the outer sheath, so that the abutment ring frame abuts against the outer sheath.

[0011] At least one embodiment of the present invention provides a durable overhead insulated conductor, wherein the transmission thread assembly includes a helical transmission bar and a support plate. The helical transmission bar is fixedly connected to one side of the fixed ring, and a plurality of the support plates are fixedly connected to the circumference of the fixed ring. The plurality of support plates are all fixedly connected to the inner arc surface of the helical transmission bar.

[0012] At least one embodiment of the present invention provides a durable overhead insulated conductor, wherein the threaded rotating seat includes a fixed rotating seat and an internal threaded sleeve. The fixed rotating seat is disposed on the outside of the overhead insulated conductor body, and the internal threaded sleeve is rotatably connected inside the fixed rotating seat. The internal threaded sleeve is threadedly engaged with the helical transmission bar.

[0013] At least one embodiment of the present invention provides a durable overhead insulated conductor, wherein the inner threaded sleeve is provided with a plurality of fixed inserts around its circumference, which facilitates the rotation of the inner threaded sleeve.

[0014] At least one embodiment of the present invention provides a durable overhead insulated conductor, wherein the fixed rotating base is provided with a plurality of mounting protrusions, the mounting protrusions are provided with damping sliders, the damping sliders are slidably connected with mounting grooves, and the mounting grooves are parallel to each other with the overhead insulated conductor body.

[0015] At least one embodiment of the present invention provides a durable overhead insulated conductor, wherein a meshing buckle is fixedly connected to one side of the mounting groove, a sloping slide is provided inside the meshing buckle, and a flexible fastening band is provided on one side of the meshing buckle, the flexible fastening band being slidably disposed within the sloping slide.

[0016] At least one embodiment of the present invention provides a durable overhead insulated conductor, wherein a meshing seat with multiple toothed blocks is movably disposed within the sloping slide, and an inner toothed groove is provided on the flexible fastening band, the inner toothed groove meshing with the meshing seat.

[0017] At least one embodiment of the present invention provides a durable overhead insulated conductor, wherein the engaging buckle is provided with an installation slot, the installation slot is provided with a spring damper, and the spring damper is connected to the engaging seat.

[0018] The working principle and beneficial effects of this invention are as follows:

[0019] In this invention, when an overhead insulated conductor body is required for electrical connection between two power overhead structures, the abutment ring frame, traction spiral wire, fixing ring, and spiral transmission bar are first fitted onto both sides of the overhead insulated conductor body, with the abutment ring frame abutting against the middle of the overhead insulated conductor body. Then, the threaded swivel is installed on the power overhead structure using a meshing buckle and a flexible fastening band. After rotating the inner threaded sleeve, the fixing ring and spiral transmission bar do not rotate under the action of the traction spiral wire. This causes the traction spiral wire to deform, moving the middle of the overhead insulated conductor body to both sides, thus traction and tension on the middle of the overhead insulated conductor body. This ensures the stability and anti-vibration properties of the middle region of the overhead insulated conductor body, reduces the tensile force on both sides of the overhead insulated conductor body, effectively increases the installation strength of the overhead insulated conductor body, and improves its service life. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the mating ring frame, fixing ring, traction spiral wire, spiral transmission bar and fixing rotating seat in this invention;

[0023] Figure 3 For the present invention Figure 2 A magnified structural diagram of point A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of the abutment ring frame, fixing ring, traction spiral wire, spiral transmission bar and support plate in this invention;

[0025] Figure 5 This is a partial cross-sectional structural diagram showing the cooperation of the fixed rotating seat, internal threaded sleeve, mounting slide, engaging buckle, and flexible fastening band in this invention.

[0026] Figure 6 For the present invention Figure 5 A magnified structural diagram of point B in the middle section;

[0027] Figure 7 This is a partial cross-sectional structural diagram showing the engagement of the snap-fit, the sloping slide, the mounting slot, and the spring damper in this invention.

[0028] In the diagram: 1. Overhead insulated conductor body; 2. Abutment ring frame; 3. Fixing ring; 4. Traction spiral wire; 5. Conductor; 6. Cross-linked polyethylene insulation layer; 7. Outer sheath; 8. Damping ring sleeve; 9. Semi-circular fastener; 10. Spiral transmission bar; 11. Support plate; 12. Fixing rotating seat; 13. Internal threaded sleeve; 14. Fixing insert; 15. Mounting protrusion; 16. Damping slider; 17. Mounting groove; 18. Engaging buckle; 19. Sloping slide; 20. Flexible fastening band; 21. Engaging seat; 22. Internal toothed groove; 23. Mounting slot; 24. Spring damper. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 7 As shown, this embodiment proposes a durable overhead insulated conductor, including an overhead insulated conductor body 1. The overhead insulated conductor body 1 includes a conductor 5. A cross-linked polyethylene insulation layer 6 is extruded on the outer side of the conductor 5. An outer sheath 7 is provided on the outer arc surface of the cross-linked polyethylene insulation layer 6. When it is necessary to use the overhead insulated conductor body 1 to make an electrical connection between two power overhead structures, the conductor 5 wrapped with the cross-linked polyethylene insulation layer 6 extends out from the outer sheath 7, so that the conductor 5 is electrically connected to the corresponding terminal on the power overhead structure, thereby realizing long-distance transmission of electrical energy.

[0031] like Figures 1 to 4As shown, it also includes an abutment ring frame 2, which abuts against the middle of the overhead insulated conductor body 1. A damping ring sleeve 8 is provided on the inner side of the abutment ring frame 2. Two connected semi-circular fasteners 9 are provided on the inner wall of the abutment ring frame 2. The semi-circular fasteners 9 press the damping ring sleeve 8 against the outer sheath 7, so that the abutment ring frame 2 and the outer sheath 7 are in contact. When it is necessary to connect the middle area of ​​the abutment ring frame 2 and the outer sheath 7, the abutment ring frame 2 is moved to the corresponding position on the outside of the outer sheath 7, and the two semi-circular fasteners 9 are placed inside the abutment ring frame 2, so that the inner arc of the semi-circular fasteners 9 presses against the damping ring sleeve 8. At this time, the two semi-circular fasteners 9 are aligned to form a ring shape. Then, bolts or other fasteners are used to connect the two semi-circular fasteners 9, so that the surface of the damping ring sleeve 8 is in full contact with the surface of the outer sheath 7.

[0032] like Figures 1 to 4 As shown, the fixing ring 3 is slidably disposed on the outside of the overhead insulated conductor body 1. A traction spiral wire 4 is disposed between the fixing ring 3 and the abutment ring frame 2. Moving the fixing ring 3 causes the traction spiral wire 4 and the abutment ring frame 2 to pull the middle of the overhead insulated conductor body 1. After the abutment ring is fixedly connected, the fixing ring 3 moves along the outside of the overhead insulated conductor body 1, causing the traction spiral wire 4 to deform under tension, and pulling the middle of the overhead insulated conductor body 1 to the sides. This reduces the downward force in the middle of the overhead insulated conductor body 1 and increases the overall tension of the overhead insulated conductor body 1. Furthermore, when pulling the middle of the overhead insulated conductor body 1, the traction spiral wire 4 can offset the excessive tension generated when pulling the overhead insulated conductor body 1 through deformation, effectively maintaining stability when pulling the overhead insulated conductor body 1. The traction spiral wire 4, which is sleeved on the outside of the overhead insulated conductor body 1, can effectively protect the overhead insulated conductor body 1.

[0033] like Figures 1 to 4As shown, a transmission thread assembly is provided on the side of the fixed ring 3 away from the abutment ring frame 2. A threaded rotating seat is provided on the outer side of the overhead insulated conductor body 1. The threaded rotating seat is in transmission cooperation with the transmission thread assembly, driving the fixed ring 3, the traction spiral wire 4, and the abutment ring frame 2 to move. The transmission thread assembly includes a spiral transmission bar 10 and support plates 11. The spiral transmission bar 10 is fixedly connected to one side of the fixed ring 3. Multiple support plates 11 are fixedly connected to the circumference of the fixed ring 3. The multiple support plates 11 are all fixedly connected to the inner arc surface of the spiral transmission bar 10. To keep the fixed ring 3 moving stably, the threaded rotating seat is first placed on the outside of the overhead insulated conductor body 1 along with the spiral drive bar 10. When the abutting ring frame 2 abuts against the outer surface of the outer sheath 7, the threaded rotating seat drives the spiral drive bar 10 to move laterally, so that the fixed ring 3 and the traction spiral wire 4 move together with the spiral drive bar 10, thereby pulling the middle part of the overhead insulated conductor body 1. The support plate 11 used can support the spiral drive bar 10 and prevent the spiral drive bar 10 from deforming.

[0034] like Figures 1 to 2 and Figures 5 to 7 As shown, the threaded rotating seat includes a fixed rotating seat 12 and an internal threaded sleeve 13. The fixed rotating seat 12 is located on the outside of the overhead insulated conductor body 1. The internal threaded sleeve 13 is rotatably connected inside the fixed rotating seat 12. The internal threaded sleeve 13 is threadedly engaged with the spiral drive bar 10, causing the internal threaded sleeve 13 to rotate inside the fixed rotating seat 12. Through the threaded connection between the internal threaded sleeve 13 and the spiral drive bar 10, under the premise that the fixed rotating seat 12 remains stationary and the fixed ring 3 cannot rotate under the action of the traction spiral wire 4, the spiral drive bar 10, the fixed ring 3, and the traction spiral wire 4 are driven to move laterally together, thereby pulling the middle part of the overhead insulated conductor body 1.

[0035] like Figures 1 to 2 and Figures 5 to 7 As shown, multiple fixed insertion tubes 14 are provided on the circumference of the internal threaded sleeve 13 to facilitate the rotation of the internal threaded sleeve 13. Construction personnel can use rod-shaped tools to insert into the fixed insertion tubes 14, which saves construction personnel the rotational force on the internal threaded sleeve 13.

[0036] like Figures 1 to 2 and Figures 5 to 7As shown, the fixed rotating base 12 is provided with multiple mounting protrusions 15, and the mounting protrusions 15 are provided with damping sliders 16. The damping sliders 16 are slidably connected with mounting grooves 17. The mounting grooves 17 are parallel to the overhead insulated conductor body 1. In order to connect the fixed rotating base 12 and connect the two sides of the overhead insulated conductor body 1 to the power overhead structure, so as to reduce the tension on both sides of the overhead insulated conductor body 1 during the installation process, the mounting grooves 17 are first moved on the damping sliders 16 according to the distance between the fixed rotating base 12 and the connection point of the power overhead structure. Since the main force generated by the overhead insulated conductor body 1 during use is its own weight, the mounting grooves 17 will not move randomly after being adjusted to the designated position.

[0037] like Figures 1 to 2 and Figures 5 to 7 As shown, a snap-fit ​​buckle 18 is fixedly connected to one side of the mounting groove 17. A sloping slide 19 is provided inside the snap-fit ​​buckle 18. A flexible fastening band 20 is provided on one side of the snap-fit ​​buckle 18. The flexible fastening band 20 is slidably disposed in the sloping slide 19. The flexible fastening band 20 is wrapped around the connection of the power overhead structure. Then, one side of the flexible fastening band 20 passes through the sloping slide 19. Then, the corresponding area of ​​the flexible fastening band 20 is kept connected in the sloping slide 19, so that the flexible fastening band 20 is tightened and connected to the power overhead structure.

[0038] like Figures 1 to 2 and Figures 5 to 7 As shown, a meshing seat 21 with multiple toothed blocks is movably disposed inside the sloping slide 19. An inner toothed groove 22 is provided on the flexible fastening band 20. The inner toothed groove 22 meshes with the meshing seat 21. After the flexible fastening band 20 is extended into the sloping slide 19, the inner toothed groove 22 meshes with the toothed blocks on the meshing seat 21, thereby fastening the flexible fastening band 20.

[0039] like Figures 1 to 2 and Figures 5 to 7 As shown, the engaging buckle 18 is provided with an installation slot 23, and a spring damper 24 is provided in the installation slot 23. The spring damper 24 is connected to the engaging seat 21. When the flexible fastening band 20 needs to pass through the slope slide 19, although the engaging seat 21 will also engage with the flexible fastening band 20, the engaging seat 21 can move towards the installation slot 23. Therefore, during the process of the construction personnel using external force to pull the flexible fastening band 20 through the slope slide 19, the engaging seat 21 will continuously move back and forth along the deformation path of the spring damper 24 in the slope slide 19. When the traction of the flexible fastening band 20 is stopped, under the action of the spring damper 24, the engaging seat 21 stably engages with the flexible fastening band 20, so that the corresponding area on the flexible fastening band 20 remains stable in the slope slide 19.

[0040] The working principle of this durable overhead insulated conductor:

[0041] First, the abutment ring 2, traction spiral wire 4, fixing ring 3, and spiral transmission bar 10 are all fitted on both sides of the overhead insulated conductor body 1, and the abutment ring 2 abuts against the middle of the overhead insulated conductor body 1. Then, according to the distance between the fixed rotating seat 12 and the connection point of the power overhead structure, the mounting slide 17 is driven to move on the damping slider 16 to adjust the distance between the flexible fastening band 20 and the power overhead structure. The flexible fastening band 20 is wrapped around the connection point of the power overhead structure. Then, one side of the flexible fastening band 20 passes through the slope slide 19. Then, the corresponding area of ​​the flexible fastening band 20 is kept connected in the slope slide 19, so that the flexible fastening band 20 is tightened and connected to the power overhead structure.

[0042] Then, the inner threaded sleeve 13 is rotated. Under the action of the traction spiral wire 4, the fixed ring 3 and the spiral transmission bar 10 will not rotate. As a result, during the deformation of the traction spiral wire 4, the middle part of the overhead insulated conductor body 1 is moved to both sides. This reduces the downward force of the middle part of the overhead insulated conductor body 1, increases the overall tension of the overhead insulated conductor body 1, improves the installation strength of the overhead insulated conductor body 1, and increases the service life of the overhead insulated conductor body 1.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A durable overhead insulated conductor comprising an overhead insulated conductor body (1), characterized in that, Also includes: The abutting ring (2) abuts against the middle part of the overhead insulated conductor body (1); A fixing ring (3) is slidably disposed on the outside of the overhead insulated conductor body (1). A traction spiral wire (4) is provided between the fixing ring (3) and the abutting ring frame (2). Moving the fixing ring (3) causes the traction spiral wire (4) and the abutting ring frame (2) to pull the middle part of the overhead insulated conductor body (1). The transmission thread assembly is provided on the side of the fixed ring (3) away from the abutting ring frame (2), and a threaded rotating seat is provided on the outer side of the overhead insulated conductor body (1). The threaded rotating seat is in transmission cooperation with the transmission thread assembly to drive the fixed ring (3), the traction spiral wire (4) and the abutting ring frame (2) to move. The transmission thread assembly includes: A spiral drive bar (10) is fixedly connected to one side of the fixed ring (3); Support plate (11), multiple support plates (11) are fixedly connected to the circumference of the fixed ring (3), and multiple support plates (11) are fixedly connected to the inner arc surface of the spiral transmission bar (10); The threaded rotary seat includes: Fixed rotating base (12), the fixed rotating base (12) is disposed on the outside of the overhead insulated conductor body (1); The internal threaded sleeve (13) is rotatably connected inside the fixed rotating seat (12), and the internal threaded sleeve (13) is threadedly engaged with the spiral transmission bar (10).

2. A long lasting overhead insulated conductor as claimed in claim 1, wherein, The overhead insulated conductor body (1) includes: The conductor (5) has a cross-linked polyethylene insulation layer (6) extruded on its outer side, and an outer sheath (7) is provided on the outer arc surface of the cross-linked polyethylene insulation layer (6).

3. A long lasting overhead insulated conductor as claimed in claim 2, wherein, The inner side of the abutment ring frame (2) is provided with a damping ring sleeve (8), and two connected semi-circular fasteners (9) are provided on the inner wall of the abutment ring frame (2). The semi-circular fasteners (9) squeeze the damping ring sleeve (8) and the outer sheath (7) to fit together, so that the abutment ring frame (2) and the outer sheath (7) abut together.

4. A durable overhead insulated conductor according to claim 3, characterized in that, The inner threaded sleeve (13) is provided with multiple fixed insertion tubes (14) around its circumference, which facilitates the rotation of the inner threaded sleeve (13).

5. A durable overhead insulated conductor according to claim 4, characterized in that, The fixed rotating base (12) is provided with a plurality of mounting protrusions (15), and a damping slider (16) is provided on the mounting protrusions (15). A mounting groove (17) is slidably connected on the damping slider (16), and the mounting groove (17) is parallel to the overhead insulated conductor body (1).

6. A durable overhead insulated conductor according to claim 5, characterized in that, One side of the mounting groove (17) is fixedly connected to a snap fastener (18), and a sloped slide (19) is provided inside the snap fastener (18). A flexible fastening band (20) is provided on one side of the snap fastener (18), and the flexible fastening band (20) is slidably disposed inside the sloped slide (19).

7. A durable overhead insulated conductor according to claim 6, characterized in that, The inclined slide (19) is equipped with a meshing seat (21) with multiple tooth blocks, and the flexible fastening band (20) is provided with an inner tooth groove (22), which meshes with the meshing seat (21).

8. A durable overhead insulated conductor according to claim 7, characterized in that, The engagement buckle (18) is provided with an installation slot (23), and a spring damper (24) is provided in the installation slot (23). The spring damper (24) is connected to the engagement seat (21).

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