CN203422397U - Lead wire joint fixing grounding tool for high voltage test - Google Patents

Abstract

The utility model relates to a high voltage lead wire construction auxiliary tool and particularly to a lead wire joint fixing grounding tool for a high voltage test. The main points of the structure are as follows: the lead wire joint fixing grounding tool comprises a banding tape, a first insulation rod, a universal joint, a second insulation rod and a wiring clamp, wherein one end of the banding tape is connected with one end head of the first insulation rod, the other end of the first insulation rod is connected with one end portion of the second insulation rod through the universal joint, the other end of the second insulation rod is connected with the wiring clamp, and one end of the wiring clamp is fixedly connected with a grounding wire. The advantages are as follows: rigid double insulation rods capable of adjusting and controlling the distance between a lead wire and a primary device are utilized so that the distance between the lead wire and the primary device can be controlled in a stable manner; and the wiring clamp with the ground wire is utilized for connection with the lead wire so that high voltage electric damage to people caused by induction electricity and residual charges can be avoided, and the safety is quite high. Since the insulation rods can rotationally adjust the distance between the lead wire and the primary device, a worker can operate at a near place, and therefore, the operation is simple and convenient.

Description

Fixing grounding tool for lead splices for high voltage test

technical field

The utility model relates to a high-voltage lead wire construction auxiliary tool, in particular to a lead wire connector fixing grounding tool for high-voltage testing.

Background technique

According to the needs of condition-based maintenance of power transmission and transformation equipment, during the maintenance test, it is necessary to disassemble the lead wires of primary equipment such as transformers and CVTs, completely electrically isolate the primary equipment, and then perform high-voltage tests. After the lead wires of a device are disassembled, it is generally necessary to fix the lead wires. The function of fixing the lead wires is to facilitate the pulling of the lead wires when the wiring is to be restored, and at the same time prevent the lead wires from fluttering due to external forces. If the lead wires are disassembled without fixing, the lead wires will deviate once. The equipment was too far away for operators to recover the lead.

After removing the lead wire of a primary device, the traditional method is to bind the lead wire to the nearest primary device with a vinyl tape. However, the vinyl tape needs to be stretched hard when the lead wire is tied, but when the vinyl tape is removed, the vinyl tape is stretched and the vinyl tape is stretched. Attached to the lead wire, it is difficult to disassemble and inconvenient to operate; in addition, because the vinyl tape is a flexible tape, it connects the lead wire connector and the primary device, and has a certain length in the air, so it is relatively easy to swing due to external force (wind). It will affect the next test work, and the swing of the lead connector will also bring safety hazards to the construction personnel. The induced electricity and residual charges carried by itself will easily cause high-voltage electric injuries; and this method will cause damage to the vinyl tape. Insufficient lead leads to throwing lead wires and causing power outage accidents, which bring greater economic losses; finally, the use of vinyl tape binding does not realize the grounding of the lead wires, and cannot prevent the lead wires from being injured by induced electricity, residual charges, or sudden calls from the opposite lead wire. This method is relatively impractical in practice, resulting in complicated maintenance and test work and low safety.

Contents of the invention

The purpose of the utility model is to provide a simple, convenient and high-safety high-voltage test lead connector fixing grounding tool according to the shortcomings of the prior art.

The purpose of this utility model is achieved by the following approach:

The main points of the structure of the lead joint fixing tool for high-voltage tests are that it includes a binding strap, a first insulating rod, a universal joint, a second insulating rod and a terminal clamp, and one end of the binding strap is connected to one end of the first insulating rod. The other end of an insulating rod is connected to one end of a second insulating rod through a universal joint, and the other end of the second insulating rod is connected to a terminal clamp, and one end of the terminal clamp is fixedly connected to a ground wire.

When the lead wire is detached from the primary device, it may carry the induced electricity and residual charge. Therefore, after the lead wire is removed, the lead wire should be clamped with the clamp first, and the induced electricity and the participating charge will be released through the grounding wire. When in use, one end of the first insulating rod is fixed on the primary equipment through a binding band, and the lead joints are fixedly connected by a terminal clamp. When removing the lead wire, turn the second insulating rod around the universal joint to a position close to the primary equipment, thereby leading the fixing clip to the vicinity of the worker. After the worker removes the lead wire, he can directly fix the lead wire with the clamp; then Then adjust the second insulating rod to drive the terminal clamp and lead wire away from the primary equipment, so that the lead wire is isolated from the primary equipment, and then carry out the high-voltage test work; Pull close to the worker so the worker can recover the lead.

Since the insulating rod is a rigid material, it can stably control the distance between the lead wire and the primary equipment without being swayed by external force, and the terminal clip with the ground wire can directly release the induced electricity and residual charge when connecting the lead wire , to avoid the high-voltage electric injury caused by its induced electricity and residual charge, which greatly improves the safety of construction. At the same time, because the distance between the lead wire and the primary equipment can be rotatably adjusted by the insulating rod, the staff can operate nearby, so the operation is simple and convenient.

The utility model can be further specifically described as:

It also includes a fixing clip inserted between the second insulating rod and the terminal clip.

Considering that the connecting clip needs to lead the ground wire and fix the lead wire, which may cause problems in fixing the lead wire. Therefore, when the fixing clip is introduced, when the lead wire is detached from the primary device, the lead wire should be clamped by the connecting clip first, and the induction current will be released through the ground wire. And participate in the charge, and then fix the connecting lead through the fixing clip to ensure safe construction.

The fixing clamp includes an upper clamping piece, a lower clamping piece and a fixing bolt, both of which include a semi-circular arc component, one end of the semi-circular arc component has an extended inline component, the other end is connected with a reel sleeve, and the upper clamping piece The semi-circular arc member of the lower clip is merged into a circular clip cavity, and the sleeve holes of the reel sleeves of the upper clip and the lower clip are coincident, and a shaft is passed through it to form a hinged shaft, the upper clip and the lower clip The one-shaped components are superimposed, and screw holes are provided longitudinally, and the fixing bolts are adapted to the screw holes and screwed into it; a connecting ring is provided on the upper clamping part of the fixing clip, and the connecting ring is connected to the second The other end of the insulating rod is fixedly connected, and at the same time is fixedly connected with the terminal clip through the pull rope.

When in use, unscrew the fixing bolt, open the upper clamp and the lower clamp (the upper clamp rotates relative to the lower clamp with the hinged shaft as the fulcrum, and is away from the lower clamp), put the lead wire in the circular clamp cavity, Close the upper clamp and the lower clamp until the in-line components are superimposed, and tighten the fixing bolts to complete the fixed connection of the leads. The procedure for releasing the lead wire is the opposite of the above-mentioned procedure for fixing.

The binding strap is a belt.

The belt has good binding and fixing characteristics, and is not easy to slip off.

In summary, the utility model provides a fixed grounding tool for lead wire joints for high-voltage tests, which adopts rigid double insulating rods that can adjust the distance between the lead wire and the primary equipment, so it can stably control the distance between the lead wire and the primary equipment. It will not be swayed by external force, and the lead wire is connected with a terminal clip with a grounding wire, which avoids high-voltage electric injury caused by induced electricity and residual charge, and has high safety. At the same time, because the distance between the lead wire and the primary equipment can be rotatably adjusted by the insulating rod, the staff can operate nearby, so the operation is simple and convenient.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the tool for fixing the grounding of the lead joints for the high voltage test described in the best embodiment of the present invention.

FIG. 2 is a schematic bottom view of the fixing clip in FIG. 1 .

Below in conjunction with embodiment the utility model is described further.

Detailed ways

Best practice:

Referring to accompanying drawing 1, the high-voltage test is used for fixing the grounding tool of the lead joint, including a binding strap 1, a first insulating rod 2, a universal joint 3, a second insulating rod 4, a fixing clip 5 and a connecting clip 6. Specifically: the binding strap 1 is a belt, one end of the binding strap 1 is connected to one end of the first insulating rod 2 through a connector 7, and the other end of the first insulating rod 2 is connected to the second insulating rod through a universal joint 3 One end of 4 is connected, and the other end of the second insulating rod 4 is connected with fixing clip 5, and the connecting clip 6 is a kind of spring clamp, and one end of its operating handle is connected with fixture 3, and the other end is connected with grounding wire.

The specific structure of the fixing clip 5 is shown in accompanying drawing 2, and the fixing clip 5 includes an upper clip 51, a lower clip 52 and a fixing bolt 53, both of which include a semicircle member, and one end of the semicircle member has an extended The other end is connected with a reel sleeve, and the semicircle members of the upper clamp 51 and the lower clamp 52 merge into a circular clamp cavity 54, and the sleeve holes of the reel sleeves of the upper clamp and the lower clamp overlap , which is pierced with a shaft to form a hinged shaft 55, the in-line members of the upper clamp 51 and the lower clamp 52 are superimposed, and a screw hole is provided longitudinally, and the fixing bolt 53 is adapted to the screw hole and screwed. Among them; the upper clip 51 of the fixing clip is provided with a connecting ring 56, and the connecting ring 56 is fixedly connected with the other end of the second insulating rod.

Main points of the present utility model are:

The utility model is used for fixing and grounding special lead joints for high-voltage tests, and its material has good mechanical strength and meets certain insulation performance requirements. The belt can well fix the device on the primary equipment, adapting to equipment of different thicknesses; the insulating rod insulates the lead wire from the primary equipment, and has a certain mechanical strength; the universal energy-saving adjusts the direction and distance of the lead wire fixing; the fixing piece It is an iron piece that can clamp the lead wire tightly, it can be freely opened to wrap the lead wire, and then the lead wire can be tightened by rotating the screw; the terminal clamp can ground the lead wire.

Absorb the relevant experience of mechanical design and insulating tools, compare the materials of various insulating tools widely used at present, select suitable materials for trial production of products, and the final equipment should meet the mechanical strength and various electrical performance indicators, and its operation is simple and convenient:

① Before the lead wire of the primary equipment is removed, the binding of the device is first fixed on the primary equipment. The binding and fixing part is adjustable and flexible, and the device can be well bound on the equipment;

② After one end of the terminal clamp is connected to the ground wire and grounded, connect the terminal clamp to the lead wire to prevent the induction electric injury;

③ Open the thread of the iron piece at the other end of the device, hold the lead wire and tighten the thread to fix the lead wire;

④ After removing the lead wire of the primary equipment, stretch the insulating rod by adjusting the universal joint, change the direction, and adjust the distance between the lead wire and the primary equipment;

⑤ After the high-voltage test is over, restore the lead wire to the primary equipment. You only need to dismantle the device, untie the binding and fixing part, turn the universal joint, open the iron parts and the wiring clip to restore the lead wire.

The technical effect of the utility model is:

① Simple operation, convenient to use, can be operated by a single person, reducing labor costs;

②Improve the efficiency of maintenance test;

③The cost is lower than the group ground wire, which can avoid the installation of group ground wire due to induction electricity, which is light and practical;

④Change the original operation method, eliminate the possible economic losses caused by the breakage of the original lead wire binding due to vinyl tape breakage, loose binding or induction electric injury, and avoid power failure accidents caused by throwing the lead wire.

The undescribed part of the utility model is the same as the prior art.

Claims (4)

1. pigtail splice solid ground instrument for high-potting, it is characterized in that, include binding strap, the first insulating bar, universal joint, the second insulating bar and binding clip, one end of binding strap is connected to a termination of the first insulating bar, the other end of the first insulating bar is connected with an end of the second insulating bar by universal joint, the other end of the second insulating bar is connected with binding clip, and one end of binding clip is fixedly connected with ground wire.

2. pigtail splice solid ground instrument for high-potting according to claim 1, is characterized in that, also include geometrical clamp, it is plugged between the second insulating bar and binding clip.

3. pigtail splice solid ground instrument for high-potting according to claim 2, it is characterized in that, geometrical clamp includes upper clamping piece, lower clamping piece and set bolt, the two has included semi arch member, one end of semi arch member has the yi word pattern member of extension, the other end is connected with spool cover, the semi arch member of upper clamping piece and lower clamping piece merges conglobate folder chamber, and the trepanning of the spool of upper clamping piece and lower clamping piece cover overlaps, wherein be installed with axle, form jointed shaft part, the yi word pattern member of upper clamping piece and lower clamping piece is superimposed, and be vertically arranged with screw, set bolt and this screw are adaptive, and stubborn being connected on wherein, on the upper clamping piece of geometrical clamp, be provided with abutment ring, this abutment ring is fixedly connected with the other end of the second insulating bar, is fixedly connected with by stay cord with binding clip simultaneously.

4. pigtail splice solid ground instrument for high-potting according to claim 1, is characterized in that, described binding strap is a kind of belt.

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