Steel-cored aluminum stranded wire core overhead insulated cable for 110kV power transmission line

Abstract

The utility model relates to the technical field of steel-cored aluminum stranded wire core overhead insulated cables, in particular to a steel-cored aluminum stranded wire core overhead insulated cable for a 110kV power transmission line, which comprises a cable sheath, a reinforced steel core is arranged in an inner cavity of the cable sheath, and an aluminum stranded wire main body is wound on the surface of the reinforced steel core. According to the utility model, the threaded sleeve is rotated to drive the second threaded rod to move up and down, the extension length of the second threaded rod is adjusted, after adjustment is completed, a cable sheath, a reinforced steel core and an aluminum stranded conductor main body pass through a space between the supporting block and the lower pressing block, and then the first threaded rod is rotated to drive the lower pressing block to move up and down. The cable sheath is positioned through the supporting block and the lower pressing block, the surface of the cable sheath is protected through the wear-resistant layer, the wear-resistant effect can be achieved, the surface of the cable sheath can be effectively prevented from being abraded, and when the cable is used under the cold condition, the anti-freezing effect can be achieved through the anti-freezing layer, and the cable sheath can be effectively prevented from being frozen due to low temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of steel core aluminum stranded wire core overhead insulated cables, in particular to a steel core aluminum stranded wire core overhead insulated cable for a 110kV power transmission line. Background Art

[0002] Steel core aluminum cable, or steel core aluminum wire, is a cable used in overhead power lines. It uses a strong tensile steel wire as the core of the conductor and is surrounded by aluminum wire for power supply.

[0003] After searching, the patent number is CN215417591U, and the name is a utility model of a steel core aluminum stranded core cross-linked polyethylene insulated overhead cable, which includes a fixed structure, an anti-loosening structure and an anti-bending structure. Through research and analysis, it is found that although it has the advantages of enhanced cable core protection and safety and good anti-bending effect, it still has the following disadvantages to a certain extent.

[0004] For example, during use, the cable is not easy to position itself, is easily damaged by external factors, is not easy to supply power, has poor external protection, is easily worn by hard objects, and reduces its service life. In order to solve the above technical problems, we have designed a steel core aluminum stranded core overhead insulated cable for 110kV transmission lines. Utility Model Content

[0005] The purpose of the utility model is to provide a steel core aluminum stranded wire core overhead insulated cable for a 110kV transmission line, which has the advantages of convenient positioning and good protection effect, and solves the problems of being inconvenient to position itself, being easily damaged by external factors, being inconvenient to supply power, having poor external protection effect, being easily worn by hard objects, and reducing its service life.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an overhead insulated cable with a steel core and an aluminum stranded wire core for a 110kV transmission line, comprising a cable sheath, an inner cavity of the cable sheath is provided with a reinforced steel core, an aluminum stranded wire body is wound around the surface of the reinforced steel core, a support block is provided on the surface of the cable sheath, a first threaded rod is rotatably connected to the top of the support block, a pressing block is threadedly sleeved on the surface of the first threaded rod, a mounting mechanism is provided on the top of the pressing block, the cable sheath comprises an insulating layer, a buffer layer is sleeved on the surface of the insulating layer, and a protective layer is sleeved on the surface of the buffer layer.

[0007] Preferably, the mounting mechanism includes a connecting rod, the surface of the connecting rod is rotatably connected to the lower pressure block, the top of the connecting rod is connected to a connecting plate by bolts, the surface of the connecting rod is sleeved with a movable sleeve, the bottom of the connecting plate is connected to a spring by bolts, the bottom of the spring is connected to the movable sleeve by bolts, the top of the connecting plate is connected to a first connecting frame by bolts, the surface of the first connecting frame is connected to a damper by bolts, the bottom of the damper is connected to a second connecting frame by bolts, the top of the second connecting frame is connected to a storage cylinder by bolts, the top of the storage cylinder is rotatably connected to a threaded sleeve, and the top of the threaded sleeve is penetrated by a second threaded rod.

[0008] Preferably, the surface of the second threaded rod is threadedly connected to the threaded sleeve, and the top of the second threaded rod is connected to a mounting plate via bolts.

[0009] Preferably, the top of the first threaded rod is connected to a handle via bolts, and the surface of the handle is provided with anti-slip grooves.

[0010] Preferably, the insulating layer is made of insulating rubber, and the buffer layer is made of foamed aluminum.

[0011] Preferably, the protective layer includes an antifreeze layer, the inner wall of the antifreeze layer is bonded to the buffer layer, the surface of the antifreeze layer is bonded with a thermal insulation layer, the surface of the thermal insulation layer is bonded with a wear-resistant layer, the antifreeze layer is made of rock wool, the thermal insulation layer is made of glass fiber, and the wear-resistant layer is made of nylon.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model drives the second threaded rod to move up and down by rotating the threaded sleeve to adjust the extension length of the second threaded rod. After the adjustment is completed, the cable skin, the reinforced steel core and the aluminum stranded wire body are passed between the support block and the lower pressure block, and then the first threaded rod is rotated to drive the lower pressure block to move up and down, the cable skin is positioned by the support block and the lower pressure block, and then the second threaded rod is installed on the preset weighing line to hoist the cable skin, the reinforced steel core and the aluminum stranded wire body. During use, if the cable skin, the reinforced steel core and the aluminum stranded wire body shake, the support block, the first threaded rod and the lower pressure block will be driven to move up and down, and the lower pressure block will drive the connecting rod and the connecting plate to move up and down, and the spring will be driven by the connecting plate to perform telescopic movement, and the connecting plate will drive the first connecting frame to move up and down, so that the damper performs damping movement to resist earthquakes, which is convenient for protecting the cable skin, the reinforced steel core and the aluminum stranded wire body.

[0014] The utility model protects the surface of the cable skin through the wear-resistant layer, which can play a wear-resistant role and can effectively prevent the surface of the cable skin from being worn out. When used in cold conditions, the antifreeze layer can play an antifreeze role and can effectively prevent the cable skin from being frozen due to low temperature. When used in hot conditions, the heat insulation layer plays a heat insulation role and can effectively prevent high temperature from causing damage to the cable skin. When encountering impact, the buffer layer plays a buffering role and prevents the reinforced steel core and the aluminum stranded wire body from being damaged due to impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the axonometric drawing of the structure of the utility model;

[0016] Figure 2 A three-dimensional diagram of the connecting rod and the second threaded rod of the utility model;

[0017] Figure 3 It is a cutaway stereogram of the cable sheath of the utility model;

[0018] Figure 4 It is a sectional stereoscopic diagram of the protective layer of the utility model.

[0019] In the figure: 1. cable sheath; 2. reinforced steel core; 3. aluminum stranded wire body; 4. insulation layer; 5. buffer layer; 6. protective layer; 7. antifreeze layer; 8. heat insulation layer; 9. wear-resistant layer; 10. support block; 11. first threaded rod; 12. pressing block; 13. connecting rod; 14. connecting plate; 15. spring; 16. movable sleeve; 17. first connecting frame; 18. damper; 19. second connecting frame; 20. storage tube; 21. threaded sleeve; 22. second threaded rod; 23. installation mechanism. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 4 A steel core aluminum stranded wire core overhead insulated cable for a 110kV transmission line, comprising a cable sheath 1, an inner cavity of the cable sheath 1 is provided with a reinforced steel core 2, an aluminum stranded wire body 3 is wound around the surface of the reinforced steel core 2, a support block 10 is provided on the surface of the cable sheath 1, a first threaded rod 11 is rotatably connected to the top of the support block 10, a pressing block 12 is threadedly sleeved on the surface of the first threaded rod 11, a mounting mechanism 23 is provided on the top of the pressing block 12, the cable sheath 1 comprises an insulating layer 4, a buffer layer 5 is sleeved on the surface of the insulating layer 4, and a protective layer 6 is sleeved on the surface of the buffer layer 5.

[0021] See also Figure 1 and Figure 2The mounting mechanism 23 includes a connecting rod 13, the surface of the connecting rod 13 is rotatably connected to the lower pressing block 12, the top of the connecting rod 13 is connected to a connecting plate 14 by bolts, the surface of the connecting rod 13 is sleeved with a movable sleeve 16, the bottom of the connecting plate 14 is connected to a spring 15 by bolts, the bottom of the spring 15 is connected to the movable sleeve 16 by bolts, the top of the connecting plate 14 is connected to a first connecting frame 17 by bolts, the surface of the first connecting frame 17 is connected to a damper 18 by bolts, the bottom of the damper 18 is connected to a second connecting frame 19 by bolts, the top of the second connecting frame 19 is connected to a storage cylinder 20 by bolts, the top of the storage cylinder 20 is rotatably connected to a threaded sleeve 21, and the top of the threaded sleeve 21 is penetrated by a second threaded rod 22. By setting the damper 18, it can play an anti-seismic role and can effectively prevent the cable skin 1 from shaking frequently.

[0022] See also Figure 2 The surface of the second threaded rod 22 is threadedly connected to the threaded sleeve 21, and the top of the second threaded rod 22 is connected to a mounting plate by bolts. By setting the mounting plate, the second threaded rod 22 can be easily installed and fixed.

[0023] See also Figure 1 The top of the first threaded rod 11 is connected to a turning handle by bolts, and the surface of the turning handle is provided with anti-slip grooves. By providing the turning handle, it is convenient for the staff to grasp the first threaded rod 11, and it is convenient for the staff to rotate the first threaded rod 11. By providing the anti-slip grooves, it is convenient to increase the friction between the staff's hand and the turning handle, so that the staff can hold the turning handle firmly.

[0024] See also Figure 1 and Figure 3 The insulating layer 4 is made of insulating rubber, and the buffer layer 5 is made of foamed aluminum. The buffer layer 5 can play a buffering role and effectively prevent the reinforced steel core 2 and the aluminum stranded wire body 3 from being damaged due to impact.

[0025] See also Figure 1 and Figure 4 The protective layer 6 includes an antifreeze layer 7, the inner wall of the antifreeze layer 7 is bonded to the buffer layer 5, the surface of the antifreeze layer 7 is bonded with a heat insulation layer 8, the surface of the heat insulation layer 8 is bonded with a wear-resistant layer 9, the material of the antifreeze layer 7 is rock wool, the material of the heat insulation layer 8 is glass fiber, and the material of the wear-resistant layer 9 is nylon. By setting the heat insulation layer 8, it can play a role of heat insulation and can effectively prevent the cable skin 1 from being damaged by high temperature.

[0026] When in use, the second threaded rod 22 is driven to move up and down by rotating the threaded sleeve 21 to adjust the protruding length of the second threaded rod 22. After the adjustment is completed, the cable sheath 1, the reinforced steel core 2 and the aluminum stranded wire body 3 are passed through between the support block 10 and the lower pressing block 12, and then the first threaded rod 11 is rotated to drive the lower pressing block 12 to move up and down. The cable sheath 1 is positioned by the support block 10 and the lower pressing block 12, and then the second threaded rod 22 is installed on the preset weighing line to hoist the cable sheath 1, the reinforced steel core 2 and the aluminum stranded wire body 3. During use, if the cable sheath 1, the reinforced steel core 2 and the aluminum stranded wire body 3 shake, it will drive the support block 10, the first threaded rod 11 and the lower pressing block 12 to move up and down, and the lower pressing block 12 drives the connecting rod 13 and the connecting plate 14 to move up and down. The spring 15 is driven to perform telescopic movement through the connecting plate 14, and the connecting plate 14 drives the first connecting frame 17 to perform up and down movement, so that the damper 18 performs damping movement to resist earthquake. The surface of the cable skin 1 is protected by the wear-resistant layer 9, which can play a wear-resistant role and effectively prevent the surface of the cable skin 1 from being worn. When used in cold conditions, the antifreeze layer 7 can play an antifreeze role and effectively prevent the cable skin 1 from being frozen due to low temperature. When used in hot conditions, the heat insulation layer 8 plays a heat insulation role and effectively prevents high temperature from causing damage to the cable skin 1. When encountering impact, the buffer layer 5 plays a buffering role to prevent the reinforced steel core 2 and the aluminum stranded wire body 3 from being damaged due to impact. During the power transmission process, the insulating layer 4 plays an insulating role and can effectively prevent leakage.

[0027] To sum up: the steel core aluminum stranded wire core overhead insulated cable for 110kV transmission line, through the first connecting frame 17, the damper 18, the second connecting frame 19, the storage tube 20, the threaded sleeve 21, the second threaded rod 22 and the installation mechanism 23, solves the problems of being inconvenient to position itself, being easily damaged by external factors, being inconvenient to supply power, having poor external protection effect, being easily worn by hard objects, and reducing its service life.

Claims

1. A steel core aluminum stranded wire core overhead insulated cable for 110 kV transmission lines, comprising a cable sheath (1), characterized in that: The inner cavity of the cable sheath (1) is provided with a reinforced steel core (2), the surface of the reinforced steel core (2) is wound with an aluminum stranded wire body (3), the surface of the cable sheath (1) is provided with a support block (10), the top of the support block (10) is rotatably connected to a first threaded rod (11), the surface of the first threaded rod (11) is threadedly sleeved with a pressing block (12), the top of the pressing block (12) is provided with a mounting mechanism (23), the cable sheath (1) comprises an insulating layer (4), the surface of the insulating layer (4) is sleeved with a buffer layer (5), and the surface of the buffer layer (5) is sleeved with a protective layer (6).

2. A 110kV steel core aluminum stranded wire overhead insulated cable for transmission lines according to claim 1, characterized in that: The mounting mechanism (23) comprises a connecting rod (13), the surface of the connecting rod (13) is rotatably connected to the lower pressing block (12), the top of the connecting rod (13) is connected to a connecting plate (14) by bolts, the surface of the connecting rod (13) is sleeved with a movable sleeve (16), the bottom of the connecting plate (14) is connected to a spring (15) by bolts, the bottom of the spring (15) is connected to the movable sleeve (16) by bolts, the top of the connecting plate (14) is connected to a first connecting frame (17) by bolts, the surface of the first connecting frame (17) is connected to a damper (18) by bolts, the bottom of the damper (18) is connected to a second connecting frame (19) by bolts, the top of the second connecting frame (19) is connected to a storage cylinder (20) by bolts, the top of the storage cylinder (20) is rotatably connected to a threaded sleeve (21), and the top of the threaded sleeve (21) is penetrated by a second threaded rod (22).

3. A 110kV steel core aluminum stranded wire overhead insulated cable for transmission lines according to claim 2, characterized in that: The surface of the second threaded rod (22) is threadedly connected to the threaded sleeve (21), and the top of the second threaded rod (22) is connected to a mounting plate via bolts.

4. The steel core aluminum stranded wire core overhead insulated cable for 110 kV transmission line according to claim 1, characterized in that: The top of the first threaded rod (11) is connected to a handlebar via a bolt, and the surface of the handlebar is provided with anti-slip grooves.

5. The steel core aluminum stranded wire core overhead insulated cable for 110 kV transmission line according to claim 1, characterized in that: The material of the insulating layer (4) is insulating rubber, and the material of the buffer layer (5) is foamed aluminum.

6. The steel core aluminum stranded wire core overhead insulated cable for 110 kV transmission line according to claim 1, characterized in that: The protective layer (6) comprises an antifreeze layer (7), the inner wall of the antifreeze layer (7) is bonded to the buffer layer (5), the surface of the antifreeze layer (7) is bonded to a heat insulating layer (8), the surface of the heat insulating layer (8) is bonded to a wear-resistant layer (9), the material of the antifreeze layer (7) is rock wool, the material of the heat insulating layer (8) is glass fiber, and the material of the wear-resistant layer (9) is nylon.

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