Device for 750KV ultrahigh-voltage cable with large insulation thickness

Abstract

The utility model relates to the technical field of high-voltage cables, in particular to a device for 750KV ultrahigh-voltage large-insulation-thickness cables, which comprises two connecting strips and two leather sheaths, a plurality of wire cores are inserted into the leather sheaths, two ends of the two connecting strips are fixedly connected with first connecting plates, the interiors of the first connecting plates are in threaded connection with lead screws, and the lead screws are in threaded connection with the lead screws. A sliding strip is slidably connected to the interior of the first connecting plate, a clamping block is fixedly connected to the other end of the sliding strip, the lead screw is rotationally connected with the interior of the clamping block, a V-shaped groove is formed in the surface of the clamping block, a rotating block is fixedly connected to the end side of the lead screw, and a second connecting plate is fixedly connected to the other end of the first connecting plate. According to the utility model, through the arrangement of the structure, the use strength of the butted leather sheaths is improved, the phenomenon that the butted leather sheaths are easy to break under the action of external force is avoided, and the use requirements of the butted leather sheaths are met as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage cables, in particular to a device for a 750KV extra-high voltage cable with a large insulation thickness. Background Art

[0002] High-voltage cables use special insulating materials, such as cross-linked polyethylene (XLPE) or oil-impregnated paper, and can withstand voltages of up to more than 500 kV. The insulating layer of high-voltage cables is thick and can withstand voltage impulses and power frequency voltages of up to several hundred kV.

[0003] In the existing related technologies, the following defects often exist: The 750KV extra-high voltage cable with a large insulation thickness belongs to a type of high-voltage cable. During the wiring process of the 750KV extra-high voltage cable with a large insulation thickness, after the cores of the 750KV extra-high voltage cable with a large insulation thickness are wound around each other, insulating tape is often used for bundling. When the 750KV extra-high voltage cable with a large insulation thickness is subjected to external forces such as wind, the insulating tape cannot meet the usage requirements after the connection of the 750KV extra-high voltage cable with a large insulation thickness, and the 750KV extra-high voltage cable with a large insulation thickness is prone to breakage, thereby reducing the stability of the connection of the 750KV extra-high voltage cable with a large insulation thickness.

[0004] Therefore, the utility model provides a device for a 750KV extra-high voltage cable with a large insulation thickness. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the defect that the connection strength of the 750KV extra-high voltage cable with a large insulation thickness in the existing technology cannot meet the usage requirements, and to propose a device for a 750KV extra-high voltage cable with a large insulation thickness.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: A device for a KV extra-high voltage cable with a large insulation thickness includes two connecting bars and two leather sleeves. A number of cores are inserted into the leather sleeves. Both ends of the two connecting bars are fixedly connected with first connecting plates. A lead screw is threadedly connected inside the first connecting plates. A sliding bar is slidably connected inside the first connecting plates. The other end of the sliding bar is fixedly connected with a clamping block. The lead screw and the clamping block are rotatably connected inside.

[0007] The effects achieved by the above components are as follows: The lead screw will drive the clamping block to move towards the side close to the leather sleeve, and the sliding of the sliding bar inside the first connecting plate plays a role in restricting the moving direction of the clamping block.

[0008] Preferably, a V-shaped groove is formed on the surface of the clamping block.

[0009] The effect achieved by the above components is: by arranging the V-shaped groove sleeve on the outside of the leather case, the stability of fixing the cylindrical leather case is improved.

[0010] Preferably, a rotating block is fixedly connected to the end side of the screw rod.

[0011] The effects achieved by the above components are: rotating the rotating block, and the setting of the rotating block facilitates the driving and rotating work of the screw rod.

[0012] Preferably, the other end of the first connecting plate is fixedly connected to the second connecting plate, and the second connecting plate is slidably connected to two sliding rods inside, and the ends of the two sliding rods close to each other are fixedly connected to a pressure block, and a trapezoidal groove is provided on the surface of the pressure block, and a number of barbed blocks of equal proportional size are evenly and fixedly connected to the inner side of the trapezoidal groove.

[0013] The effect achieved by the above components is that the barb block will be inserted into the interior of the insulating structure leather case. At this time, the greater the external force between the leather cases, the tighter the barb block is inserted into the leather cases, thereby improving the use strength after the leather cases are connected.

[0014] Preferably, a spring is sleeved on the surface of the slide rod, and two ends of the spring are fixedly connected to the second connecting plate and the pressing block respectively.

[0015] The effect achieved by the above components is that the pressing block is attached to the outer side of the leather case under the elastic force of the spring.

[0016] Preferably, one end of the sliding rod away from the pressing block is fixedly connected with a stop block.

[0017] The effect achieved by the above components is that the setting of the stopper facilitates the pulling operation of the slide rod.

[0018] Preferably, a moving rod is slidably connected inside the second connecting plate, and a clamping plate is fixedly connected to the other end of the moving rod.

[0019] The effect achieved by the above components is: the clamping plate on the moving rod is sleeved on the side wall of the sliding pin, which can achieve temporary support for the lifting rear stopper, and then further support for the pulling rear sliding rod and the pressing block.

[0020] In summary:

[0021] In the present utility model, after butt - jointing 750KV extra - high - voltage cables with large insulation thickness using insulating tape, first, the sliding rod is pulled. After pulling the sliding rod to an appropriate position, the moving rod inside the second connecting plate is slid, and the clamping plate on the moving rod is sleeved on the side wall of the sliding pin. At this time, the temporary support work for the lifted rear block can be realized, and further support work for the pulled - out sliding rod and the pressing block can be realized. At this time, the two pressing blocks and the two sets of clamping blocks can be respectively sleeved on the outer sides of the two leather sleeves. By setting the above - mentioned structure, the service strength after butt - jointing the leather sleeves is improved, the phenomenon that the leather sleeves are easily disconnected when subjected to external forces after butt - jointing is avoided, and the service requirements after butt - jointing the leather sleeves are satisfied as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three - dimensional structural schematic diagram of the present utility model;

[0023] Figure 2 is a partial structural schematic diagram of the present utility model;

[0024] Figure 3 is a structural schematic diagram of the connection strip in the present utility model;

[0025] Figure 4 In the present utility model Figure 3 partial structural schematic diagram.

[0026] Legend: 1. Leather sleeve; 2. Core; 3. Connection strip; 4. First connecting plate; 5. Second connecting plate; 6. Slide bar; 7. Clamping block; 8. V - shaped groove; 9. Lead screw; 10. Rotating block; 11. Sliding rod; 12. Pressing block; 13. Trapezoidal groove; 14. Barbed block; 15. Moving rod; 16. Clamping plate; 17. Block; 18. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Referring to Figures 1-4 as shown, the present utility model provides a technical solution: A device for 750KV extra - high - voltage cables with large insulation thickness includes two connection strips 3 and two leather sleeves 1, and a plurality of cores 2 are inserted into the leather sleeves 1.

[0028] The following specifically describes its overall specific settings and functions.

[0029] In this embodiment: Both ends of the two connection strips 3 are fixedly connected with first connecting plates 4. The first connecting plates 4 are internally threaded with lead screws 9, and the first connecting plates 4 are internally slidably connected with slide bars 6. The other end of the slide bar 6 is fixedly connected with a clamping block 7, and the lead screw 9 and the clamping block 7 are rotatably connected inside. The lead screw 9 drives the clamping block 7 to move towards the side close to the leather sleeve 1. Among them, the sliding of the slide bar 6 inside the first connecting plate 4 plays a role in restricting the moving direction of the clamping block 7.

[0030] The surface of the clamping block 7 is provided with a V-shaped groove 8. By arranging the V-shaped groove 8 to sleev on the outer side of the leather sleeve 1, the stability of fixing the cylindrical leather sleeve 1 is improved. A rotating block 10 is fixedly connected to the end side of the lead screw 9. The arrangement of the rotating block 10 facilitates the driving and rotation of the lead screw 9.

[0031] The other end of the first connecting plate 4 is fixedly connected to a second connecting plate 5. Two sliding rods 11 are slidably connected inside the second connecting plate 5. Both ends of the two sliding rods 11 close to each other are fixedly connected with pressing blocks 12. The surface of the pressing block 12 is provided with a trapezoidal groove 13. A number of barbs 14 of equal proportion and size are uniformly fixedly connected to the inner side of the trapezoidal groove 13. The barbs 14 will be inserted reversely into the inside of the insulating leather sleeve 1. At this time, the greater the external force acting on the leather sleeves 1, the tighter the barbs 14 are inserted into the inside of the leather sleeve 1, thereby improving the service strength after the docking of the leather sleeves 1.

[0032] Specifically, a spring 18 is sleeved on the surface of the sliding rod 11. Both ends of the spring 18 are fixedly connected to the second connecting plate 5 and the pressing block 12 respectively. The pressing block 12 will be attached to the outer side of the leather sleeve 1 under the elastic force of the spring 18. A stop block 17 is fixedly connected to the end of the sliding rod 11 away from the pressing block 12. The arrangement of the stop block 17 facilitates the pulling work of the sliding rod 11. A moving rod 15 is slidably connected inside the second connecting plate 5. The other end of the moving rod 15 is fixedly connected to a clamping plate 16. The clamping plate 16 on the moving rod 15 is sleeved on the side wall of the sliding pin. At this time, the temporary support work of the lifted stop block 17 can be realized, and further support work of the pulled sliding rod 11 and the pressing block 12 can be realized.

[0033] Working principle: After using insulating tape to butt joint between 750KV extra-high voltage cables with large insulation thickness, first pull the sliding rod 11. After pulling the sliding rod 11 to a proper position, slide the moving rod 15 inside the second connecting plate 5, and put the clamping plate 16 on the moving rod 15 on the side wall of the sliding pin. At this time, the temporary support work for the lifted rear block 17 can be realized, and further support work for the pulled sliding rod 11 and the pressing block 12 can be realized. At this time, the two pressing blocks 12 and the two sets of clamping blocks 7 can be respectively put on the outer sides of the two leather sleeves 1. Rotate the rotating block 10. The setting of the rotating block 10 facilitates the driving rotation work of the lead screw 9. The lead screw 9 will drive the clamping block 7 to move towards the side close to the leather sleeve 1. Among them, the sliding of the sliding strip 6 inside the first connecting plate 4 plays a role in restricting the moving direction of the clamping block 7. The two clamping blocks 7 move towards each other, and the preliminary clamping and fixing work of the leather sleeve 1 can be realized, improving the use strength of the butt joint between the two leather sleeves 1. By setting the V-shaped groove 8 on the outer side of the leather sleeve 1, the stability of fixing the cylindrical leather sleeve 1 is improved. After fixing the clamping block 7 on the outer side of the leather sleeve 1, pull the moving rod 15 inside the second connecting plate 5 and pull out the clamping plate 16 from the outer side of the sliding rod 11. At this time, the pressing block 12 will be attached to the outer side of the leather sleeve 1 under the elastic force of the spring 18. When the leather sleeves 1 are subjected to external pulling force, the barbs 14 will be inserted into the inside of the insulating structure leather sleeve 1 in reverse. At this time, the greater the external force on the leather sleeves 1, the tighter the barbs 14 are inserted into the leather sleeve 1, thus improving the use strength after the butt joint between the leather sleeves 1. By setting the above structure, the use strength after the butt joint between the leather sleeves 1 is improved, avoiding the phenomenon that the leather sleeves 1 are easily disconnected when subjected to external force after butt joint, and as much as possible meeting the use requirements after the butt joint between the leather sleeves 1.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A device for a 750KV extra-high voltage cable with a large insulation thickness, comprising two connecting bars (3) and two leather sheaths (1), characterized in that: A number of wire cores (2) are inserted inside the leather case (1). Both ends of the two connecting bars (3) are fixedly connected with first connecting plates (4). A lead screw (9) is threadedly connected inside the first connecting plate (4). A slide bar (6) is slidably connected inside the first connecting plate (4). The other end of the slide bar (6) is fixedly connected with a clamping block (7). The lead screw (9) and the clamping block (7) are rotatably connected inside.

2. A 750 kV extra-high voltage cable device with a large insulation thickness according to claim 1, characterized in that: A V-shaped groove (8) is formed on the surface of the clamping block (7).

3. A 750 kV extra-high voltage cable device with a large insulation thickness according to claim 1, characterized in that: A rotating block (10) is fixedly connected to the end side of the lead screw (9).

4. A 750 kV extra-high voltage cable device with a large insulation thickness according to claim 1, characterized in that: The other end of the first connecting plate (4) is fixedly connected with a second connecting plate (5). Two slide bars (11) are slidably connected inside the second connecting plate (5). Both ends of the two slide bars (11) close to each other are fixedly connected with pressing blocks (12). A trapezoidal groove (13) is formed on the surface of the pressing block (12). A number of barbs (14) of equal proportion and size are evenly fixedly connected inside the trapezoidal groove (13).

5. A 750 kV extra-high voltage cable device with a large insulation thickness according to claim 4, characterized in that: A spring (18) is sleeved on the surface of the slide bar (11). Both ends of the spring (18) are fixedly connected with the second connecting plate (5) and the pressing block (12) respectively.

6. The device for a 750 kV extra-high voltage cable with a large insulation thickness according to claim 4, characterized in that: A stop block (17) is fixedly connected to the end of the slide bar (11) away from the pressing block (12).

7. A 750 kV extra-high voltage cable device with a large insulation thickness according to claim 4, characterized in that: A moving rod (15) is slidably connected inside the second connecting plate (5). The other end of the moving rod (15) is fixedly connected with a clamping plate (16).

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