CN103986093B - HVAC power transmission line equipotential transferring stick - Google Patents

Abstract

The invention provides an equipotential transfer bar for high-voltage AC transmission lines, which includes a first metal shrapnel and a second metal shrapnel, and the contact part of the first metal shrapnel and the second metal piece can form two recesses. Put it into the recess outside the closed arc, quickly push the equipotential transfer rod to make the charged body enter the arc hook of the first metal shrapnel. And the first metal shrapnel is in contact with the second metal shrapnel, the two form a complete closed arc, the charged body is in the closed arc, and the charged body will not fall off due to factors such as sloshing, and the charged body will be removed after the operation is completed. Put the body into the recess in the closed arc, and quickly pull the equipotential transfer rod to separate the charged body. The invention has the advantages of simple structure, convenient operation and high safety factor of operators when using it.

Description

Equipotential transfer rods for high voltage AC transmission lines

technical field

The invention relates to the field of electric power technology, in particular to an equipotential transfer rod for a high-voltage AC transmission line.

Background technique

Live work has become an important means and method in the process of power line detection, maintenance, and transformation. In order to protect the safety of workers, it is necessary to put the shielding clothing of workers and power lines into the same potential before testing power lines. Generally, potential transfer is used. When using it, the operator usually wears shielding clothing, holds the potential transfer rod, and hooks the hook of the potential transfer rod to the wire, so that the potential flows from the wire into the shielding clothing, so that the wire and the operator are in the same position. Potential, during the entire working process of the operator, the hook must always be connected to the wire, otherwise it will cause potential imbalance and affect the safety of the operator.

However, the ditch of the hook of the existing potential transfer rod faces downward, and the operator needs to move the hook over the wire and move toward the hook to hook the wire. If the wire cannot be hooked, the equipotential connection will fail and arc discharge will occur. On the other hand, because the hook needs to be crossed over the wire for hook connection, when the distance between the hook and the wire is too large, the safety distance between the operator and the wire may be insufficient. Workers are injured. Moreover, since the potential transfer rod does not adopt an effective detachment design, it is easy to cause the hook and the wire to fall off when subjected to severe shaking, which poses a great potential safety hazard.

Therefore, it is necessary to develop a novel equipotential transfer tool that is simple in structure, convenient in operation and safe in use, and is used for live work on high-voltage transmission lines.

Contents of the invention

The invention provides an equipotential transfer rod for a high-voltage AC transmission line, which has a simple structure, is convenient to operate and is not easy to fall off, thereby maximally protecting the safety of operating personnel.

In order to achieve the above object, the present invention provides the following technical means:

An equipotential transfer rod for a high-voltage AC transmission line, comprising:

a first metal shrapnel and a second metal shrapnel;

One end of the first metal dome is bent into a first arc-shaped hook, the end of the first arc-shaped hook and the other end of the first metal dome are in contact with the second metal dome, and the end is the corresponding tangent point when the tangent slope of the arc-shaped hook is maximum.

Preferably, the first metal dome and the second metal dome have a width of at least 15mm and a thickness of at least 2mm.

Preferably, it also includes:

Hollow insulating pipes with a length of at least 50 cm;

The other end of the first metal shrapnel is in close contact with one end of the second metal shrapnel to form a metal shrapnel, the metal shrapnel penetrates the hollow insulating tube and extends out of the bottom of the tube, and is on the metal shrapnel extending from the bottom of the tube A first opening is provided.

Preferably, the other end of the second metal shrapnel is bent into a second arc-shaped hook, and the end of the first arc-shaped hook is in contact with the back of the second arc-shaped hook, and the back is The starting position of the second arc hook.

Preferably, the hollow insulating tube includes a plurality of holes, and a plurality of second openings are provided at positions corresponding to the plurality of holes on the metal shrapnel, and bolts are used to pass through the holes and the first holes. Two openings are used to fix the metal shrapnel.

Preferably, the plurality of holes includes 3 holes.

Preferably, it also includes:

A conductive wire with a metal ring at one end, the cross-sectional area of the conductive wire is at least 16mm2;

The metal ring piece and the first opening are locked by bolts, and the conductive wire is connected with the metal elastic piece.

Preferably, the other end of the conductive wire is connected to the male thread of the T-shaped conductive connector through a screw hole, and the T-shaped conductive connector includes one male thread and two female threads.

Preferably, the two female threads of the T-shaped conductive connector are respectively connected to the upper garment and the lower garment of the shielding clothing.

Preferably, it also includes:

A U-shaped ring buckle connected with the hollow insulating tube.

It can be seen from the above technical solutions that in the equipotential transfer rod for high-voltage AC transmission lines provided by the present invention, since the end of the arc-shaped hook of the first metal shrapnel must be arc-shaped, the first metal shrapnel is in contact with the second metal shrapnel Part of it can form two recesses. When in use, put the charged body into the recess outside the closed arc, and quickly push the equipotential transfer rod, so that the charged body enters the curved hook of the first metal shrapnel. And the first metal shrapnel is in contact with the second metal shrapnel, the two form a complete closed arc, the charged body is in the closed arc, and the charged body will not fall off due to factors such as sloshing, and the charged body will be removed after the operation is completed. Put the body into the recess in the closed arc, and quickly pull the equipotential transfer rod to separate the charged body.

It can be seen from the above that the equipotential transfer rod provided by the present invention can hook the charged body more concisely and conveniently at the beginning of the operation. , Easy to operate, and the operator has a high safety factor when using it.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural diagram of the metal shrapnel of the equipotential transfer rod of the high-voltage AC transmission line disclosed by the embodiment of the present invention;

Fig. 2 is a structural diagram of the metal shrapnel of another high-voltage AC transmission line equipotential transfer rod disclosed in the embodiment of the present invention;

3 is a structural diagram of an equipotential transfer rod for a high-voltage AC transmission line disclosed in an embodiment of the present invention;

Fig. 4 is a structural diagram of another high-voltage AC transmission line equipotential transfer rod disclosed in the embodiment of the present invention;

Fig. 5 is a structural diagram of another high-voltage AC transmission line equipotential transfer rod disclosed in the embodiment of the present invention;

Fig. 6 is a schematic diagram of the use process of the equipotential transfer rod for the high-voltage AC transmission line disclosed by the embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, the present invention provides an embodiment of an equipotential transfer rod for a high-voltage AC transmission line. In this embodiment, the second metal shrapnel 102 is a linear structure as an example, which is mainly used for 110KV-500KV high voltage Transmission lines, specifically including:

The first metal dome 101 and the second metal dome 102;

One end of the first metal dome 101 is bent into a first arc-shaped hook, and the end of the first arc-shaped hook and the other end of the first metal dome 101 are in contact with the second metal dome 102 , so Said end is the corresponding tangent point when the tangent slope of the curved hook is maximum.

Because the tangent slope of the first arc-shaped crotch is different with the degree of curvature, its tangent slope is also different. In the present invention, the position of the corresponding tangent point when the tangent slope of the arc-shaped crotch is maximum is used as the end. Preferably, the tangent point and the arc When the line connecting the centers of the shapes is perpendicular to the tangent, the slope is the largest at this time, and the corresponding tangent point is used as the end.

In order to enable the equipotential transfer rod to be connected to the charged body simply and quickly, and not easy to fall off during use, the inventor of the present invention provides a first metal dome 101 and a second metal dome 102, wherein the second metal dome 102 serves as an auxiliary function, the first metal dome 101 plays a main role of hooking.

In order to achieve the function of hooking, one end of the first metal shrapnel 101 is bent into a first arc-shaped hook to hook the charged body. In order to prevent the charged body from being ejected due to sloshing after entering the first arc-shaped hook, the The second metal dome 102 is in contact with the end of the first arc-shaped hook, and the second metal dome 102 forms a closed arc with the first metal dome 101. After the charged body enters the first arc-shaped hook, it is equivalent to entering In a closed arc, it can prevent the charged body from detaching.

In order to make the electrified body enter the first curved hook more simply and conveniently, when the present invention designs the first metal elastic piece 101 and the second metal elastic piece 102, the second metal elastic piece 102 is connected to the end of the first curved hook. contact, so that the contact point between the first metal dome 101 and the second metal dome 102 forms two recesses, one of which is outside the closed arc and the other is inside the closed arc.

When working, put the electrified body into the recess outside the closed arc, and then quickly push the equipotential transfer rod so that the conductor enters the first arc-shaped hook under the action of inertia. During the operation, the electrified body The transfer rod will not fall off in the closed arc. After the operation is over, put the charged body into the recess in the closed arc, and then quickly pull the equipotential transfer rod to make the charged body withdraw from the equipotential transfer under the action of inertia. Great.

It can be seen from the above that the equipotential transfer rod provided by the present invention can hook the charged body more concisely and conveniently at the beginning of the operation. , Easy to operate, and the operator has a high safety factor when using it.

In the above illustration, the second metal dome 102 is a linear structure. Preferably, the second metal dome 102 can be a hook-shaped structure consistent with the first metal dome 101, as shown in FIG. 2, that is, the second metal dome One end of 102 is bent into a second curved hook, the end of the first curved hook is in contact with the back of the second curved hook, and the back is the starting point of the second curved hook Location.

In the embodiment shown in Fig. 1, when the second metal elastic piece 102 is a linear structure, the recess formed by the first metal elastic piece 101 and the second metal elastic piece 102 is relatively narrow, and when the cross-sectional area of the charged body is small, it can be relatively narrow. It is good to realize that the charged body enters the first arc-shaped hook. When the cross-sectional area of the charged body is slightly larger, because the recess is relatively narrow, there is not enough space to accommodate the charged body, and it is difficult for the charged body to enter the first curved hook. inside the hook.

In order to make the first metal dome 101 and the second metal dome 102 have sufficient supporting effect and at the same time have an elastic effect, when pushing the equipotential transfer rod, they can be separated due to the pushing effect, so that the charged body can enter, so it is required that the The first metal dome 101 and the second metal dome 102 have a width of at least 15mm and a thickness of at least 2mm. In order to have better support and elasticity.

The above content is the content of the part in contact with the charged body. The other parts of the equipotential transfer rod are introduced below. As shown in Figure 3, the equipotential transfer rod also includes a hollow insulating tube 103 with a length of at least 50cm. The other end of 101 is in close contact with the other end of the second metal shrapnel 102 to form a metal shrapnel, the metal shrapnel runs through the hollow insulating tube and extends out of the bottom of the tube, and the metal shrapnel extending from the bottom of the tube is provided with a second One hole.

The inside of the hollow insulating tube 103 is hollow, so that the metal shrapnel composed of the first metal shrapnel 101 and the second metal shrapnel 102 runs through the hollow insulating tube 103. The outside of the hollow insulating tube 103 is the part that the operator needs to hold. Made of materials to prevent workers from getting an electric shock when holding it.

Since the operator needs to keep the distance between the outside of himself and the charged body not less than 50cm when using the equipotential transfer rod, the present invention sets the length of the hollow insulating tube 103 to not less than 50cm, so that when the operator holds the equipotential transfer rod, Be able to keep the distance between itself and the charged body greater than 50cm to ensure its own safety.

The hollow insulating tube 103 is at least 50 cm. In order to ensure the smoothness of the metal elastic piece running through it, the metal elastic piece is fixed. Specifically, the hollow insulating tube includes a plurality of holes 104, and the metal elastic piece is connected to the metal elastic piece. A plurality of second openings 107 are provided at positions corresponding to the plurality of holes, and bolts are used to pass through the holes 104 and the second openings 107 to fix the metal domes.

Preferably, the hollow insulating tube 103 includes three holes 104, one at the upper end, one in the middle, and one at the lower end. The metal shrapnel is fixed at three points. If there are too many holes, the processing will be complicated, and the bolts will be wasted and the processing steps will be increased. If the holes are too few, the It will lead to unstable fixing of the metal shrapnel, so it is preferable to use 3 holes and use 3 bolts to fix the metal shrapnel.

As shown in FIG. 4 , the metal shrapnel extends out of the bottom of the hollow insulating tube 103 , and a first opening 105 is provided at the extending portion of the metal shrapnel so as to be connected with the shielding clothing of the operator. Preferably, the equipotential transfer rod further includes: a U-shaped ring buckle 106 connected with the hollow insulating tube. After the equipotential transfer rod is used up, the equipotential transfer rod can be hung on the locking nail through the U-shaped ring buckle, so as to be used next time.

As shown in Figure 5, the equipotential transfer rod also includes a conductive wire with a metal ring piece 206 at one end, and the metal ring piece 206 and the first opening 105 are locked by bolts, and the conductive wire is connected to the first opening 105. Metal shrapnel connected. The other end of the conductive wire is connected with the male thread 203 of the T-shaped conductive connector through the screw hole 205, and the T-shaped conductive connector includes a male thread 203 and two female threads 202, and the two of the T-shaped conductive connector The female thread is respectively connected with the upper garment and the lower garment of the shielding clothing.

The cross-sectional area of the conductive wire is at least 16mm2, so that the conductive wire can quickly transfer charges. Since metal copper has good conductivity, the conductive wire in the present invention is preferably a copper wire.

The specific use process of the equipotential transfer rod is introduced as follows:

Referring to Fig. 5, use bolts to connect the metal ring sheet 206 at one end of the copper wire 204 to the hole 105 of the metal shrapnel extended from the end of the equipotential transfer rod, and connect the other end of the copper wire to the male thread of the T-shaped conductive connector 201 , while the other two female threads of the T-shaped conductive connector are connected with the upper garment and the lower garment of the shielding garment 304 .

When carrying out the equipotential entry of live work, the equipotential operator wears shielding clothing that has been connected to the equipotential transfer rod, stops at a distance of more than 0.5m from the live wire, and holds the end of the hollow insulating tube 103 of the equipotential transfer rod. 10cm, referring to Figure 6, align the equipotential transfer rod to the position where the wire is, and quickly push the rod to this position, so that the wire passes through the gap between the two hooks, and the wire will pass through the gap between the two hooks. The inner arc of the hook slides into the top of the hook side of the first arc, so far the equipotential transfer operation of the entering potential is completed.

After the equipotential personnel complete the work, they need to perform the potential transfer operation of separating the potential from the live wire. The distance between the equipotential personnel and the live wire should be more than 0.5m. The inside of the arc-shaped hook slides into the gap between the first metal shrapnel and the second metal shrapnel, and the hand quickly pulls the rod body, so that the wire comes out from between the two hooks. After detaching from the wire, the operator quickly retracts the rod body. And stay away from the charged wire, so far the equipotential transfer operation from the potential is completed.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A high-voltage AC transmission line equipotential transfer rod, characterized in that, comprising: a first metal shrapnel and a second metal shrapnel; One end of the first metal dome is bent into a first arc-shaped hook, the end of the first arc-shaped hook and the other end of the first metal dome are in contact with the second metal dome, and the end is the corresponding tangent point when the tangent slope of the curved hook is the largest; Hollow insulating pipes with a length of at least 50 cm; The other end of the first metal shrapnel is in close contact with one end of the second metal shrapnel to form a metal shrapnel, the metal shrapnel penetrates the hollow insulating tube and extends out of the bottom of the tube, and is on the metal shrapnel extending from the bottom of the tube a first opening is provided; A conductive wire with a metal ring at one end, the cross-sectional area of the conductive wire is at least 16mm ² ; Using bolts to lock the metal ring piece and the first opening, and connect the conductive wire to the metal elastic piece; The other end of the conductive wire is connected to the male thread of the T-shaped conductive connector through the screw hole, and the T-shaped conductive connector includes a male thread and two female threads. 2. The equipotential transfer rod according to claim 1, characterized in that, the other end of the second metal shrapnel is bent into a second arc-shaped hook, and the end of the first arc-shaped hook is connected to the The back of the second curved hook is in contact, and the back is the starting position of the second curved hook. 3. The equipotential transfer rod according to claim 1 or 2, characterized in that the width of the first metal shrapnel and the second metal shrapnel is at least 15 mm, and the thickness is at least 2 mm. 4. The equipotential transfer rod according to claim 1, wherein the hollow insulating tube includes a plurality of holes, and a plurality of first holes are arranged on the metal shrapnel at positions corresponding to the plurality of holes. Two openings, using bolts to pass through the hole and the second opening to fix the metal shrapnel. 5. The equipotential transfer rod according to claim 4, wherein the plurality of holes comprises 3 holes. 6. The equipotential transfer rod according to claim 1, wherein the two female threads of the T-shaped conductive connector are respectively connected to the upper garment and the lower garment of the shielding clothing. 7. The equipotential transfer rod as claimed in claim 1 or 4, is characterized in that, also comprises: A U-shaped ring buckle connected with the hollow insulating tube.