A kind of live fault elimination device for jumper spacer

Abstract

The present invention relates to a live fault elimination device for a jumper spacer bar, comprising a support block, a transmission unit, a wire clamp unit and an operating unit for clamping and opening the wire clamp unit; the transmission unit and the wire clamp unit are both mounted on the support block; the wire clamp unit is also connected to the transmission unit; the transmission unit and the operating unit are detachably connected, the fault elimination device is mounted near the damaged spacer bar, the wire clamp unit clamps two sub-conductors that need to be spaced apart respectively, and the spacer bar is live fault eliminated. Compared with the prior art, the present invention has the advantages of simple operation mode, good safety, no influence on the original jumper spacer bar, good practicality, and live fault elimination.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line operation and maintenance, in particular to a live fault elimination device for a jumper spacer bar. Background Art

[0002] Spacer rods are hardware that are installed on split guides to fix the spacing between each split guide to prevent the guides from whipping each other, suppress breeze vibration and sub-span oscillation, and play the role of phase-to-phase insulation spacing and supporting connection in the line. When the maintenance personnel were conducting drone inspections, they found that the wire clamp of the upper phase jumper suspension string conductor terminal of a 500kV transmission line was damaged and the sub-conductor was about to fall out. This defect is a critical defect and poses a huge threat to the safe operation of the line. The fall of the sub-conductor may cause insufficient safety distance to the middle phase cross arm at any time, resulting in a tripping accident and power outage of the line, which requires immediate repair.

[0003] Live working has become the mainstream line working method because it does not affect the power supply of the line and can eliminate line defects. However, sometimes when certain lines are located in jumper insulator strings and require equal potential work, such as the middle phase of a three-phase line, live working may not be possible due to insufficient safety distance of the combined gap, and the power grid must be shut down to solve the problem. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a jumper spacer live fault elimination device which has simple operation mode, is easy to implement, has good safety and good practicality.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A live fault elimination device for a jumper spacer bar comprises a support block, a transmission unit, a wire clamp unit and an operating unit for clamping and opening the wire clamp unit; the transmission unit and the wire clamp unit are both mounted on the support block; the wire clamp unit is also connected to the transmission unit; the transmission unit and the operating unit are detachably connected, the fault elimination device is mounted near a damaged spacer bar, the wire clamp unit respectively clamps two sub-conductors that need to be spaced, and the spacer bar is live fault eliminated.

[0007] Preferably, there are two wire clamp units, which are respectively installed at two ends of the support block.

[0008] More preferably, the wire clamp unit comprises a first clamp and a second clamp; the first clamp is fixedly connected to the support block; the second clamp is slidably connected to the support block; the first clamp and the second clamp are respectively connected to the transmission unit.

[0009] Preferably, the defect elimination device is provided with a limiting nut for enabling the wire clamp unit to clamp the wire harness; the limiting nut is mounted on the transmission unit.

[0010] Preferably, the transmission unit is a screw.

[0011] Preferably, the operating unit comprises an operating rod and an operating rod connecting portion; the operating rod connecting portion is mounted on the operating rod by bolts; and a U-shaped groove is provided on the operating rod connecting portion.

[0012] More preferably, the defect elimination device is provided with a joint fastening portion, which is welded to one end of the transmission unit; the joint fastening portion is provided with a straight-shaped protrusion matching the U-shaped groove.

[0013] More preferably, the operating rod is an operating rod made of insulating material or an operating rod wrapped with insulating skin.

[0014] Preferably, the defect eliminating device is provided with a hanging unit for hanging the defect eliminating device at the damaged part of the spacer rod; the hanging unit is fixed on the supporting block by means of threads.

[0015] More preferably, the suspension unit is a circular ring structure.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The operation method is simple and easy to implement: the present invention uses an insulating rope to lift the device to the installation position, and the operating rod is used to tighten it, so as to realize the fault elimination operation of the damaged jumper spacer. Compared with the traditional power outage operation, there is no need to apply for a power outage operation. It can be completed by two people operating on the cross arm. The operation method is simple and easy to implement.

[0018] Second, good safety: the wire clamp of the present invention can realize clamping and opening operations through an operating rod, and the operator holds the insulating operating rod to operate, which improves the safety of the device.

[0019] 3. No impact on the original jumper spacer: The fault elimination device in the present invention is installed near the damaged jumper spacer during the fault elimination process, replacing the damaged part of the jumper spacer to support the jumper sub-conductor, playing an emergency fault elimination role, and has no impact on the original line spacer.

[0020] Fourth, good practicality: the fault elimination device in the present invention is used to eliminate the defect of damaged spacer bars at jumper locations, and the size of the fault elimination device can be changed according to the requirements of different voltage levels and applied to various voltage levels.

[0021] 5. Live fault elimination can be carried out: The fault elimination device in the present invention uses an insulating rope to hang the device at the place where the fault is to be eliminated, and then uses an insulating operating rod to complete the clamping operation of the wire clamp. The whole process does not require a line power outage, the operation time is short, the work efficiency is high, and the safety and stability of the high-voltage power grid is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the defect elimination device in the present invention;

[0023] Figure 2 It is a structural schematic diagram of the center line clamp unit of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the operating lever in the present invention;

[0025] Figure 4 It is a structural schematic diagram of the connecting portion of the operating rod in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the suspension unit in the present invention.

[0027] The numbers in the figure show:

[0028] 1. Support block, 2. Transmission unit, 3. Wire clamp unit, 4. Operating unit, 5. Limit nut, 6. Joint fastening part, 7. Suspension unit, 301. First clamping jaw, 302. Second clamping jaw, 401. Operating rod, 402. Operating rod connecting part. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] The present invention relates to a live fault elimination device for a jumper spacer bar, the structure of which is as follows: Figure 1 As shown, it includes a support block 1, a transmission unit 2, a wire clamp unit 3 and an operating unit 4 for clamping and opening the wire clamp unit 3. The transmission unit 2 and the wire clamp unit 3 are both installed on the support block 1, and the wire clamp unit 3 is also connected to the transmission unit 2, and the transmission unit 2 and the operating unit 3 are detachably connected.

[0031] There are two wire clamp units 2, which are respectively installed at two ends of the support block 1. The structure of the wire clamp unit is as follows: Figure 2As shown, it includes a first clamping jaw 301 and a second clamping jaw 302 , the first clamping jaw 301 is fixedly connected to the support block 1 , the second clamping jaw 302 is slidably connected to the support block 1 , and the first clamping jaw 301 and the second clamping jaw 302 are respectively connected to the transmission unit 2 .

[0032] The transmission unit 2 is provided with a limiting nut 5. In this embodiment, there are three limiting nuts 5, which are respectively installed on the transmission unit 2. The limiting nuts at both ends of the transmission unit 2 are used to realize the clamping operation of the clamping claws, and the limiting nut at the middle position of the transmission unit 2 is used to limit the transmission unit.

[0033] The transmission unit 2 in this embodiment is a screw.

[0034] The operating unit 4 includes an operating rod 401 and an operating rod connecting portion 402. The structure of the operating rod 401 is as follows: Figure 3 As shown, the structure of the operating rod connecting portion 402 is as follows Figure 4 As shown, the operating rod connecting portion 402 is installed on the operating rod 401 by means of bolts, and a U-shaped groove is provided on the operating rod connecting portion 402 .

[0035] The defect elimination device is provided with a joint fastening portion 6, which is welded to one end of the transmission unit 2, and a straight-shaped protrusion matching the U-shaped groove is provided on the joint fastening portion 6.

[0036] The operating rod 401 in this embodiment is an operating rod made of insulating material or an operating rod wrapped with insulating skin.

[0037] The defect elimination device in this embodiment is also provided with a hanging unit 7 for hanging the defect elimination device at the damaged part of the spacer rod, and the unit is fixed on the support block 1 by screw threads. The structure of the hanging unit 7 is as follows: Figure 5 As shown, the suspension unit 7 in this embodiment adopts a circular ring structure.

[0038] The dimensions of the key components in this embodiment are specifically as follows:

[0039] Support block: 535mm long, 40mm wide, 28mm thick;

[0040] Suspension unit: outer diameter 50mm, inner diameter 28mm, two suspension units are fixed at 5mm on both sides of the support block;

[0041] Clamp unit jaws: C-type clamp with an outer diameter of 58mm and an inner diameter of 30mm;

[0042] Transmission unit: 650mm long, 10mm diameter screw, with limit nuts installed at 60mm, 178mm and 532mm of the screw respectively;

[0043] Joint fastening part: A cross joint with a length of 32mm and a width of 32mm, welded to the screw.

[0044] The following requirements apply to operators when performing work:

[0045] Requirement 1: Carry out fault elimination work in good weather conditions;

[0046] Requirement 2: Live-line operators participating in fault elimination should receive special live-line operation training and tool use training, and pass the examination;

[0047] Requirement 3: There should be a dedicated supervisor for live work on site;

[0048] Requirement 4: Perform performance test on the insulating operating rod before operation.

[0049] The specific operation process of the defect elimination device in this embodiment is as follows:

[0050] Step 1: The on-site tools are laid out with special canvas, and the tools and shielding clothing are checked before the operation;

[0051] Step 2: Two operators wearing shielding suits and carrying insulated operating rods climb the tower;

[0052] Step 3: An operator uses an insulating rope to hang the fault elimination device to the damaged jumper spacer;

[0053] Step 4: Another operator fixes the operating rod connecting part to the operating rod with bolts, then connects the operating rod connecting part to the connector fastening part, and rotates the operating rod until the wire harness is clamped;

[0054] Step 5: The operator goes down the tower, organizes the tools and completes the defect elimination operation.

[0055] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A live fault elimination device for jumper spacer bars, characterized in that: The fault elimination device comprises a support block (1), a transmission unit (2), a wire clamp unit (3) and an operating unit (4) for clamping and opening the wire clamp unit (3); the transmission unit (2) and the wire clamp unit (3) are both mounted on the support block (1); the wire clamp unit (3) is also connected to the transmission unit (2); the transmission unit (2) and the operating unit (4) are detachably connected; the fault elimination device is mounted near a damaged spacer bar, and the wire clamp unit (3) respectively clamps two sub-conductors that need to be spaced apart, thereby achieving live fault elimination of the spacer bar; The wire clamp unit (3) comprises a first clamping jaw (301) and a second clamping jaw (302); the first clamping jaw (301) is fixedly connected to the support block (1); the second clamping jaw (302) is slidably connected to the support block (1); the first clamping jaw (301) and the second clamping jaw (302) are respectively connected to the transmission unit (2); The defect elimination device is provided with a limiting nut (5) for enabling the wire clamp unit (3) to clamp the wire harness; the limiting nut (5) is mounted on the transmission unit (2).

2. A live fault elimination device for jumper spacer bars according to claim 1, characterized in that: There are two wire clamp units (3), which are respectively installed at two ends of the support block (1).

3. A live fault elimination device for jumper spacer bars according to claim 1, characterized in that: The transmission unit (2) is a screw.

4. A live fault elimination device for jumper spacer bars according to claim 1, characterized in that: The operating unit (4) comprises an operating rod (401) and an operating rod connecting portion (402); the operating rod connecting portion (402) is mounted on the operating rod (401) by means of bolts; and a U-shaped groove is provided on the operating rod connecting portion (402).

5. A live fault elimination device for jumper spacer bars according to claim 4, characterized in that: The defect elimination device is provided with a joint fastening portion (6), which is welded to one end of the transmission unit (2); the joint fastening portion (6) is provided with a straight-shaped protrusion matching the U-shaped groove.

6. A live fault elimination device for jumper spacer bars according to claim 4, characterized in that: The operating rod (401) is an operating rod made of insulating material or an operating rod wrapped with insulating skin.

7. A live fault elimination device for jumper spacer bars according to claim 1, characterized in that: The defect elimination device is provided with a hanging unit (7) for hanging the defect elimination device at the damaged part of the spacer rod; the hanging unit (7) is fixed on the support block (1) by means of threads.

8. A live fault elimination device for jumper spacer bars according to claim 7, characterized in that: The suspension unit (7) is a circular ring structure.

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