An incompatible overhead insulated cable

Abstract

The present invention discloses an expandable overhead insulated cable, which relates to the technical field of insulated cables and includes a first mounting sleeve. A second mounting sleeve is movably mounted on the outer surface of the first mounting sleeve. An insulated cable body is arranged on the inner surfaces of the second mounting sleeve and the first mounting sleeve. The insulated cable body includes a steel tape armor, and a flexible wire core is arranged on the inner surface of the steel tape armor. The present invention adopts the cooperation of a breathable soft pad and an elastic cushion block. The elastic soft pad fixes the expanded cable through rebound and forms a heat dissipation cavity with the breathable soft pad. During the fixing process, the elastic soft pad deforms the rebound holes, and at the same time, anti-slip convex grains are cooperated to prevent the cable from sliding, enabling the heat of the cable to be transmitted along the breathable holes, so that the insulated cable body can dissipate heat better, solving the problem that a large amount of heat is generated when the cable conveys current, which easily limits the power transmission capacity and load-bearing capacity of the cable, thereby affecting power transmission, and achieving the effect of facilitating heat dissipation of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of insulated cables, and particularly relates to an overhead insulated cable that can be capacity-increased. Background Art

[0002] An overhead insulated cable is an overhead conductor equipped with an insulating layer and a protective outer sheath, and is a special cable manufactured using a production process similar to that of cross-linked cables. It is a new power transmission method between overhead conductors and underground cables. Overhead cables are all single-core, and can be divided into hard aluminum wire structure, hard drawn copper wire structure, aluminum alloy wire structure, steel core or aluminum alloy core support structure, and self-supporting three-core stranded structure (the wire core can be hard aluminum or hard copper wire) according to their different structures, etc. It has the main characteristics of high power supply reliability, good power supply safety, convenient erection and maintenance, and reasonable economy. The following problems exist in the prior art:

[0003] 1. The existing overhead insulated cables have poor bearing capacity, and the power capacity cannot meet the operation requirements of high loads. Therefore, an application for power capacity increase is required, and when loading new power distribution equipment and lines, capacity-increasing operations cannot be carried out with the existing power lines.

[0004] 2. After the power capacity of the existing overhead insulated cables is increased, a large amount of heat will be generated when the current is transmitted, and the heat generated during power supply cannot be dissipated in time, so that the power transmission capacity and bearing capacity of the cables are limited, thus affecting power transmission. Summary of the Invention

[0005] The present invention provides an overhead insulated cable that can be capacity-increased to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An overhead insulated cable that can be capacity-increased, including a first mounting sleeve, the outer surface of the first mounting sleeve is movably mounted with a second mounting sleeve, and the inner surfaces of the second mounting sleeve and the first mounting sleeve are provided with an insulated cable body. The insulated cable body includes a steel tape armor, the inner surface of the steel tape armor is provided with a flexible wire core, the outer surface of the flexible wire core is fixedly connected with a stress matrix, and one end of the stress matrix is fixedly connected with the inner surface of the steel tape armor.

[0008] The inner surface of the steel tape armor is fixedly connected with a filler, the inside of the filler is provided with a polyvinyl chloride protective sleeve, and the inside of the polyvinyl chloride protective sleeve is provided with a conductor cable.

[0009] The outer surface of the first mounting sleeve is provided with a movable groove, both sides of the inner wall of the movable groove are provided with sliding grooves, an arc-shaped slider is movably connected inside the sliding grooves, one side of the arc-shaped slider is fixedly connected with a connecting block, and one end of the connecting block is fixedly connected with one end of the second mounting sleeve.

[0010] A further improvement of the technical solution of the present invention lies in that: the second mounting sleeve includes a base, the inner surface of the base is fixedly connected with one end of the connecting block, one side of the base is fixedly connected with a support, and one end of the support is fixedly connected with an arc-shaped clamp.

[0011] Adopting the above technical solution, the base in this solution facilitates driving the arc-shaped slider to move, enabling the two to be calibrated and installed, and fixedly clamping the insulating cable body for power capacity increase through the arc-shaped clamp.

[0012] A further improvement of the technical solution of the present invention lies in that: a threaded hole is opened inside the base, a bolt is movably installed inside the threaded hole, one end of the bolt extends to the outside of the base, a breathable soft pad is fixedly connected to the inner surface of the arc-shaped clamp, and an elastic cushion block is arranged on one side of the breathable soft pad, and one end of the elastic cushion block is fixedly connected to the inner surface of the arc-shaped clamp.

[0013] Adopting the above technical solution, the bolt in this solution fixes the second mounting sleeve through the threaded hole, preventing the arc-shaped clamp from moving out of position, enabling it to cooperate with the elastic cushion block to fully clamp the insulating cable body, and forming a ventilation cavity with the arc-shaped clamp, thereby dissipating heat from the insulating cable body.

[0014] A further improvement of the technical solution of the present invention lies in that: a rebound hole is opened on the outer surface of the elastic cushion block, a ventilation groove is opened inside the elastic cushion block, a ventilation hole is opened on the outer surface of the rebound hole, one end of the ventilation hole extends to the inside of the ventilation groove and the outside of the elastic cushion block respectively, and anti-slip convex grains are fixedly connected to the outer surface of the elastic cushion block.

[0015] Adopting the above technical solution, the rebound hole in this solution facilitates the deformation of the elastic cushion block, enabling the ventilation hole to contact the insulating cable body, thereby increasing the heat dissipation area of the insulating cable body, further improving its heat dissipation efficiency, and preventing the insulating cable body from sliding through the anti-slip convex grains.

[0016] A further improvement of the technical solution of the present invention lies in that: a drain hole is opened at one end of the first mounting sleeve, one end of the drain hole extends to the inside of the sliding groove, a clamping mechanism is fixedly connected to the inner surface of the first mounting sleeve, and a soft partition net is arranged on one side of the clamping mechanism, and the outer surface of the soft partition net is fixedly connected to the inner surface of the first mounting sleeve.

[0017] With the above technical solution, the drain holes in the solution facilitate the drainage of accumulated water in the movable groove, preventing the accumulated water from eroding the part structure, thereby increasing its service life.

[0018] A further improvement of the technical solution of the present invention lies in that: the clamping mechanism includes a buffer block, one side of the buffer block is fixedly connected to one end of a soft partition net, an inner side of the buffer block is movably connected to a clamping strip, an inner surface of the clamping strip is fixedly connected to elastic bumps, and both ends of the clamping strip are wedge-shaped.

[0019] With the above technical solution, the elastic bumps in the solution facilitate the fixing and limiting of the insulating cable body, and its end being wedge-shaped reduces the friction force between the first mounting sleeve and the surface of the insulating cable body, thereby protecting the cable surface structure.

[0020] A further improvement of the technical solution of the present invention lies in that: a buffer groove is formed inside the buffer block, a push block is movably installed inside the buffer groove, one end of the push block extends to the outside of the buffer block and is fixedly connected to an outer surface of the clamping strip, and a spring is fixedly connected to the other end of the push block.

[0021] With the above technical solution, the spring in the solution facilitates the transmission of pressure to the push block, causing it to drive the clamping strip to fully clamp the insulating cable body.

[0022] A further improvement of the technical solution of the present invention lies in that: a rotating groove is formed on an inner surface of the base, and a pulley is movably installed inside the rotating groove.

[0023] With the above technical solution, the rotating groove in the solution facilitates the rotation of the pulley, and prevents wear from occurring on the surface of the base and the first mounting sleeve through the rotation of the pulley.

[0024] Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is:

[0025] 1. The present invention provides an overhead insulated cable with increased capacity, which uses the cooperation of a soft wire core and a stress matrix. The soft wire core improves the bending resistance of the insulated cable body, and the stress matrix supports and buffers the weight of the insulated cable body, thereby improving the power transmission of the conductor cable, preventing additional resistance from being generated when it bends. At the same time, the cooperation of the first mounting sleeve and the second mounting sleeve is adopted. The first mounting sleeve drives the base to be calibrated through an arc-shaped slider and is fixed by bolts, so that the arc clamp fixes and clamps the cable with increased power capacity, thereby combining and transmitting with the main body power cable, solving the problem that the existing overhead insulated cable has poor bearing capacity and the power capacity cannot meet the operating requirements of high loads, so power capacity increase needs to be applied for, and when loading new power distribution equipment and lines, it is impossible to perform power capacity increase operations with the original power line, achieving the effect of increasing power capacity and facilitating the loading of power capacity increase power distribution equipment and lines.

[0026] 2. The present invention provides an expandable overhead insulated cable, which adopts the cooperation of a breathable soft pad and an elastic cushion block. The elastic soft pad fixes the expandable cable by rebounding, and forms a heat dissipation cavity with the breathable soft pad. During the fixing process, the elastic soft pad deforms the rebounding holes, and at the same time cooperates with the anti-slip convex grains to prevent the cable from sliding, so that the heat of the cable is transmitted along the breathable holes, enabling the insulated cable body to dissipate heat better. This solves the problem that the existing overhead insulated cable generates a large amount of heat when transmitting current after power expansion, and cannot dissipate the heat generated during power supply in time, resulting in the limitation of the power transmission capacity and load-bearing capacity of the cable, thus affecting power transmission, and achieves the effect of facilitating heat dissipation of the cable.

[0027] 3. The present invention provides an expandable overhead insulated cable, which adopts the cooperation of a clamping mechanism and a soft partition net. The clamping mechanism clamps the insulated cable body through elastic bumps and transmits the pressure to the push block, so that the spring limits the insulated cable body to prevent it from moving. The soft partition net improves the shear stress resistance while preventing foreign objects from entering the inside of the first installation sleeve, thereby improving the service life of the insulated cable body. This solves the problem that the existing overhead insulated cable shakes during power transmission, which is likely to increase the internal resistance, and achieves the effects of preventing the overhead insulated cable from shaking, improving its power transmission stability and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the present invention;

[0029] Figure 2 is a schematic structural diagram of the insulated cable body of the present invention;

[0030] Figure 3 is an exploded view of the present invention;

[0031] Figure 4 is a schematic structural diagram of the arc clamp of the present invention;

[0032] Figure 5 is a schematic structural diagram of the elastic cushion block of the present invention;

[0033] Figure 6 is a schematic structural diagram of the first installation sleeve of the present invention;

[0034] Figure 7 is a schematic structural diagram of the clamping mechanism of the present invention;

[0035] Figure 8 is a schematic structural diagram of the base of the present invention.

[0036] In the figure: 1. First installation sleeve; 2. Second installation sleeve; 3. Insulated cable body;

[0037] 11. Movable groove; 12. Sliding groove; 13. Arc-shaped slider; 14. Connecting block; 15. Drainage hole; 16. Clamping mechanism; 17. Soft partition net;

[0038] 21. Base; 22. Support; 23. Arc-shaped fixture; 24. Threaded hole; 25. Bolt;

[0039] 31. Steel tape armor; 32. Soft body core; 33. Stress matrix; 34. Filler; 35. Polyvinyl chloride protective sleeve; 36. Conductor cable;

[0040] 161. Buffer block; 162. Clip strip; 163. Elastic bump; 164. Buffer groove; 165. Pusher block; 166. Spring;

[0041] 211. Rotating groove; 212. Pulley;

[0042] 231. Breathable soft pad; 232. Elastic cushion block; 233. Rebound hole; 234. Breathable groove; 235. Breathable hole; 236. Anti-slip convex grains. Detailed implementation mode

[0043] The present invention will be further described in detail below in conjunction with embodiments:

[0044] Embodiment 1

[0045] As Figure 1-8 shown, the present invention provides an expandable overhead insulated cable, including a first mounting sleeve 1. A second mounting sleeve 2 is movably mounted on the outer surface of the first mounting sleeve 1. An insulated cable body 3 is arranged on the inner surfaces of the second mounting sleeve 2 and the first mounting sleeve 1. The insulated cable body 3 includes a steel tape armor 31. A soft body core 32 is arranged on the inner surface of the steel tape armor 31. A stress matrix 33 is fixedly connected to the outer surface of the soft body core 32. One end of the stress matrix 33 is fixedly connected to the inner surface of the steel tape armor 31. A filler 34 is fixedly connected to the inner surface of the steel tape armor 31. A polyvinyl chloride protective sleeve 35 is arranged inside the filler 34. A conductor cable 36 is arranged inside the polyvinyl chloride protective sleeve 35. A movable groove 11 is opened on the outer surface of the first mounting sleeve 1. Sliding grooves 12 are opened on both sides of the inner wall of the movable groove 11. An arc-shaped slider 13 is movably connected inside the sliding grooves 12. A connecting block 14 is fixedly connected to one side of the arc-shaped slider 13. One end of the connecting block 14 is fixedly connected to one end of the second mounting sleeve 2. The second mounting sleeve 2 includes a base 21. The inner surface of the base 21 is fixedly connected to one end of the connecting block 14. A support 22 is fixedly connected to one side of the base 21. An arc-shaped fixture 23 is fixedly connected to one end of the support 22. A rotating groove 211 is opened on the inner surface of the base 21. A pulley 212 is movably mounted inside the rotating groove 211.

[0046] In this embodiment, the inner diameter value of the arc fixture 23 is adapted to the outer diameter value of the insulated cable body 3. The arc-shaped slider 13 drives the second mounting sleeve 2 to move, so that the arc fixtures 23 are calibrated with each other, and the insulated cable body 3 is fully fixed. At the same time, the second mounting sleeve 2 rotates through the pulley 212 during the movement to prevent the surface of the base 21 and the first mounting sleeve 1 from being worn. And through the cooperation of the soft wire core 32 and the stress matrix 33, the weight of the insulated cable body 3 itself is supported to prevent resistance from being generated during the bending process to ensure stable power transmission.

[0047] Embodiment 2

[0048] As Figure 1-8 shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, a threaded hole 24 is opened inside the base 21, and a bolt 25 is movably installed inside the threaded hole 24. One end of the bolt 25 extends to the outside of the base 21. The inner surface of the arc fixture 23 is fixedly connected with a breathable soft pad 231. One side of the breathable soft pad 231 is provided with an elastic cushion block 232. One end of the elastic cushion block 232 is fixedly connected with the inner surface of the arc fixture 23. A rebound hole 233 is opened on the outer surface of the elastic cushion block 232, and a ventilation groove 234 is opened inside the elastic cushion block 232. One end of the ventilation hole 235 extends to the inside of the ventilation groove 234 and the outside of the elastic cushion block 232 respectively. The outer surface of the elastic cushion block 232 is fixedly connected with anti-slip convex grains 236. A drain hole 15 is opened at one end of the first mounting sleeve 1, and one end of the drain hole 15 extends to the inside of the chute 12. The inner surface of the first mounting sleeve 1 is fixedly connected with a clamping mechanism 16, and a soft partition net 17 is arranged on one side of the clamping mechanism 16. The outer surface of the soft partition net 17 is fixedly connected with the inner surface of the first mounting sleeve 1.

[0049] In this embodiment, the base 21 moves driven by the arc-shaped slider 13, so that the threaded holes 24 are aligned with each other and fixed by the bolts 25 to prevent the arc fixture 23 from sliding when fixing the insulated cable body 3. At the same time, the elastic cushion block 232 and the arc fixture 23 form a ventilation cavity to dissipate heat from the insulated cable body 3. When the elastic cushion block 232 is squeezed with the insulated cable body 3, the rebound hole 233 deforms, so that the ventilation hole 235 contacts the insulated cable body 3, thereby increasing the heat dissipation area of the insulated cable body 3, and preventing the insulated cable body 3 from sliding through the anti-slip convex grains 236.

[0050] Embodiment 3

[0051] As Figure 1-8As shown in the figure, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, the clamping mechanism 16 includes a buffer block 161. One side of the buffer block 161 is fixedly connected to one end of the soft partition net 17. The inner side of the buffer block 161 is movably connected with a clamping strip 162. The inner surface of the clamping strip 162 is fixedly connected with elastic protrusions 163. The two ends of the clamping strip 162 are wedge-shaped. A buffer groove 164 is formed inside the buffer block 161. A push block 165 is movably installed inside the buffer groove 164. One end of the push block 165 extends outside the buffer block 161 and is fixedly connected to the outer surface of the clamping strip 162. The other end of the push block 165 is fixedly connected with a spring 166.

[0052] In this embodiment, the spring 166 presses the push block 165, causing the push block 165 to drive the clamping strip 162 to clamp the insulating cable body 3, and enabling the elastic protrusions 163 to fully contact the insulating cable body 3, while buffering the pressure of the spring 166 and further preventing the insulating cable body 3 from sliding.

[0053] Next, the working principle of the expandable overhead insulated cable will be specifically described.

[0054] As Figure 1-8 shown, the arc-shaped slider 13 drives the second mounting sleeve 2 to move, aligning the threaded holes 24 with each other and fixing them with bolts 25. At the same time, the second mounting sleeve 2 rotates through the pulley 212 during movement to prevent wear on the surfaces of the base 21 and the first mounting sleeve 1. Through the cooperation of the soft wire core 32 and the stress matrix 33, the weight of the insulating cable body 3 itself is supported to prevent resistance from being generated during the bending process to ensure stable power transmission. At the same time, the spring 166 presses the push block 165, causing the push block 165 to drive the clamping strip 162 to clamp the insulating cable body 3, and enabling the elastic protrusions 163 to fully contact the insulating cable body 3, while buffering the pressure of the spring 166 and further preventing the insulating cable body 3 from sliding. When the insulating cable body 3 generates heat, the insulating cable body 3 transmits the heat along the ventilation holes 235. Under the action of forming a ventilation cavity between the elastic cushion block 232 and the arc-shaped clamp 23, the air flow efficiency is improved to fully dissipate heat from the insulating cable body 3.

[0055] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An expandable aerial insulated cable, comprising a first mounting sleeve (1), characterized in that: The outer surface of the first mounting sleeve (1) is movably mounted with a second mounting sleeve (2). The inner surfaces of the second mounting sleeve (2) and the first mounting sleeve (1) are provided with an insulated cable body (3). The insulated cable body (3) includes a steel tape armor (31). The inner surface of the steel tape armor (31) is provided with a flexible core (32). The outer surface of the flexible core (32) is fixedly connected with a stress matrix (33). One end of the stress matrix (33) is fixedly connected with the inner surface of the steel tape armor (31). The inner surface of the steel tape armor (31) is fixedly connected with a filler (34). A PVC protective sleeve (35) is arranged inside the filler (34). A conductor cable (36) is arranged inside the PVC protective sleeve (35). The outer surface of the first mounting sleeve (1) is provided with a movable groove (11). Both sides of the inner wall of the movable groove (11) are provided with sliding grooves (12). An arc-shaped slider (13) is movably connected inside the sliding grooves (12). One side of the arc-shaped slider (13) is fixedly connected with a connecting block (14). One end of the connecting block (14) is fixedly connected with one end of the second mounting sleeve (2). The second mounting sleeve (2) includes a base (21). The inner surface of the base (21) is fixedly connected with one end of the connecting block (14). One side of the base (21) is fixedly connected with a support (22). One end of the support (22) is fixedly connected with an arc-shaped clamp (23). A threaded hole (24) is opened inside the base (21). A bolt (25) is movably installed inside the threaded hole (24). One end of the bolt (25) extends to the outside of the base (21). The inner surface of the arc-shaped clamp (23) is fixedly connected with a breathable soft pad (231). An elastic cushion block (232) is arranged on one side of the breathable soft pad (231). One end of the elastic cushion block (232) is fixedly connected with the inner surface of the arc-shaped clamp (23). The outer surface of the elastic cushion block (232) is provided with a rebound hole (233). A breathable groove (234) is opened inside the elastic cushion block (232). The outer surface of the rebound hole (233) is provided with a breathable hole (235). One end of the breathable hole (235) extends into the breathable groove (234) and to the outside of the elastic cushion block (232) respectively. The outer surface of the elastic cushion block (232) is fixedly connected with anti-slip convex grains (236).

2. The overhead insulated cable capable of compatibilization according to claim 1, characterized in that: One end of the first mounting sleeve (1) is provided with a drain hole (15). One end of the drain hole (15) extends into the sliding groove (12). The inner surface of the first mounting sleeve (1) is fixedly connected with a clamping mechanism (16). A soft partition net (17) is arranged on one side of the clamping mechanism (16). The outer surface of the soft partition net (17) is fixedly connected with the inner surface of the first mounting sleeve (1).

3. The overhead insulated cable capable of compatibilization according to claim 2, characterized in that: The clamping mechanism (16) includes a buffer block (161). One side of the buffer block (161) is fixedly connected to one end of a soft partition net (17). A clamping strip (162) is movably connected inside the buffer block (161). Elastic bumps (163) are fixedly connected to the inner surface of the clamping strip (162). Both ends of the clamping strip (162) are wedge-shaped.

4. The overhead insulated cable capable of compatibilization according to claim 3, wherein: A buffer groove (164) is formed inside the buffer block (161). A push block (165) is movably installed inside the buffer groove (164). One end of the push block (165) extends to the outside of the buffer block (161) and is fixedly connected to the outer surface of the clamping strip (162). A spring (166) is fixedly connected to the other end of the push block (165).

5. The extrudable aerial insulated cable according to claim 2, characterized in that: A rotating groove (211) is formed on the inner surface of the base (21). A pulley (212) is movably installed inside the rotating groove (211).

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