KR20220167642A - Lightning arrester installation structure and installation apparatus - Google Patents

Abstract

The present invention relates to a lightning arrester installation structure and installation apparatus, wherein a lightning arrester is installed at both ends of a suspension insulator via a pair of installation apparatuses coupled to both ends. A bird's nest can be hardly created, and the bird's nest does not come into contact with the lightning arrestor. Accordingly, provided is an effect of preventing a blackout accident due to the same.

Description

Lightning arrester installation structure and installation apparatus

The present invention relates to a lightning arrester installation structure and installation mechanism, and more particularly, to a structure for installing a lightning arrester on a pole of a distribution line and an installation mechanism used to install the lightning arrester.

As shown in Figure 1, the electric wire (3) of the distribution line is connected to the wancheol (1) installed on the pole with a suspension insulator (2).

In addition, a lightning arrestor 4 is installed to protect electrical equipment such as wires 3 of distribution lines, switchgears, and transformers installed on poles from abnormal voltage. The arrester 4 is installed on the iron plate 1 via a dedicated installation bracket.

Therefore, the arrester 4 was able to protect the wires and electrical equipment installed on the pole by quickly discharging the transient or abnormal voltage generated by causes such as lightning.

On the other hand, the arrester (4) is installed at right angles to the iron (1), and it is easy to create a bird's nest by being able to span a branch or the like at their connection portion. Therefore, the bird's nest is in contact with the charging part of the arrester, causing a power outage accident in case of rain.

In addition, the lead wires connected to both ends of the arrester (4) stretch downward, complicating the structure of the upper part of the pole, which is more serious when many wires and electrical facilities are installed, such as equipment poles or standing poles, so that workers can secure a safe working space. It is not easy, and the risk of safety accidents is increased by causing misunderstanding about the work target, and it is also not aesthetically pleasing.

In addition, when the disconnector (disconnector) installed on the secondary side of the lightning arrestor (4) operates, the lead wire is separated and comes into contact with the high-voltage side charging part, resulting in a ground fault accident.

In addition, although the arrester 4 is located at a close distance to the suspension insulator 2, the two devices are separately constructed, thereby reducing construction efficiency and increasing construction cost.

Korean Utility Model Registration No. 20-0334700 (2003.11.28. notice)

Accordingly, the present invention has been made to solve the above problems, preventing blackout accidents caused by bird nests, improving work safety and aesthetics by preventing complicated entanglement of wires on the upper part of electric poles, and separating lead wires during disconnector operation The purpose of the present invention is to provide a lightning arrestor installation structure and installation mechanism that prevents ground fault accidents caused by lightning arresters and enables installation of suspension insulators together, thereby improving work efficiency and reducing construction costs.

The lightning arrester installation structure according to the present invention for achieving the above object includes a suspension insulator, an installation mechanism in which upper ends are fixed to both ends of the suspension insulator, and an arrester in which both ends are coupled to the lower ends of the both ends of the installation mechanism. .

A lead wire connected to an end of the lightning arrester is inserted into a holder provided in the installation mechanism.

The installation mechanism can be freely installed at any angle on the circumference centered on the suspension insulator.

In addition, the lightning arrester installation mechanism according to the present invention includes an upper member coupled to an end of a suspension insulator, a lower member coupled to an end of the arrester, and an insulator connecting the upper member and the lower member in an insulated state.

The upper member includes a body portion connected to the upper portion of the insulator, a head portion extending from the body portion and formed in a ring shape having a downward opening, and a fixing member installation portion formed in the body portion, so that the head portion is screwed together when moving upward. It includes a fixing member that presses and fixes the connecting bracket of the suspension insulator inserted inside.

The fixing member includes a bolt part screwed into the female screw hole formed in the fixing member installation part, a pressing part rotatably connected to the upper end of the bolt part and pressurizing and fixing the connecting bracket of the suspension insulator, and a ring integrally formed at the lower end of the bolt part. Includes shape manipulation.

A plurality of contact protrusions may be formed on an inner surface of the head unit at equal intervals.

A ring-shaped ring portion is formed on the outer side of the head portion so that an indirect live wire tool can be hung to lift the installation mechanism.

The lower member includes a body portion connected to a lower portion of the insulator and a coupling portion formed at a lower end of the body portion, and a through hole is formed in the coupling portion.

The body portion of the lower member is provided with a holder capable of holding a lead wire connected to the arrester.

An intermediate bolt provided at an end of the arrester is inserted into the through hole of the coupling portion, and the coupling portion is fixed to the intermediate bolt by a pair of double nuts.

A transverse extension portion is formed between the body portion and the coupling portion, and the transverse extension portion is composed of two parts screwed together.

The insulator includes FRP (resin-reinforced plastic) provided on the inside and a polymer housing surrounding the outside of the FRP, and the upper and lower ends of the insulator are inserted into the body of the upper member and the body of the lower member, respectively, and are pressed together. .

According to the present invention as described above, the lightning arrester is installed at a position away from the iron by a predetermined distance by being installed in the suspension insulator via the installation mechanism. Therefore, it is not only difficult to create bird nests in full iron, but also prevents power outages by preventing short circuits even in rainy weather because the bird nests do not come into contact with the charged parts of the lightning arrester.

In addition, the lead wires on both sides of the lightning arrestor can be arranged so that they do not droop downward by inserting them into the mounting hook of the installation mechanism. Therefore, it helps to simplify the upper structure of equipment poles or standing poles, thereby reducing the risk of safety accidents by securing a safe working space for workers, improving the aesthetics of poles, and preventing errors from misunderstanding the wires to be worked on during work. It has the effect of disappearing.

In addition, even if the circuit breaker of the arrester operates and the lead wire is disconnected, the lead wire is connected to the installation mechanism at a location away from the iron (electrical facilities are installed) as described above, so it does not come into contact with the high-voltage side charging part, and therefore, Ground fault accidents are prevented.

In addition, according to the present invention, the lightning arrester may be installed on the suspension insulator installed, but the assembly may be processed and installed after combining the suspension insulator and the lightning arrester using an installation mechanism on the ground. In other words, it is possible to install the suspension insulator and arrester at the same time, thereby improving the efficiency of construction and reducing the construction cost.

In addition, the installation mechanism can be freely installed in the arrester at any angle. Therefore, it is possible to install the lightning arrestor in an optimal position that does not come into contact with surrounding electrical equipment or lead wires connected thereto. This not only helps to secure a safe working space, but also helps prevent short-circuit and ground fault accidents caused by contact with other facilities and wires and the arrester.

1 is a state diagram of a lightning arrestor installation according to the prior art.
2 is a view showing a lightning arrester installation structure according to the present invention.
3 is a block diagram of a lightning arrester installation mechanism according to the present invention.
Figure 4 is a partial cross-sectional view of the connection between the upper member, the insulator, and the lower member of the arrester installation mechanism.
Figure 5 is a state diagram of the arrester and the installation mechanism before assembly.
Figure 6 is a state diagram after assembly of the arrester and installation mechanism.

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. The thickness of lines or the size of components shown in the accompanying drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention of a user or operator or a precedent. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the arrester installation structure according to the present invention includes a suspension insulator 10 installed on an overhead line, an installation mechanism 30 installed at both ends of the suspension insulator 10, and both installation mechanisms 30 ) includes a lightning arrestor 20 installed with both ends coupled to.

The suspension insulator 10 is provided with connecting brackets 11 and 12 at both ends. One side connection bracket 11 is connected to the wire of the distribution line, and the other side connection bracket 12 is connected to the complete iron of the electric pole.

In the installation mechanism 30, the lower end is first coupled to the end of the arrester 20, and the upper end is connected to the connection fittings 11 and 12 of the suspension insulator 10, so that the arrester 20 is connected to the suspension insulator 10. It is a tool that allows you to install it.

As shown in FIG. 3, the installation mechanism 30 includes an upper member 31 fixed to the side of the suspension insulator 10, a lower member 32 fixed to the arrester 20 side, and the upper member 31 ) and an insulator 33 connecting the lower member 32 in an insulated state.

The upper member 31 includes a rod-shaped body portion 31a connected to the upper end of the insulator 33, and a round ring-shaped head portion 31b extending from the upper end of the body portion 31a and having a downward opening. ).

Therefore, by hanging the head part 31b on the connection fittings 11 and 12 of the suspension insulator 10, the installation mechanism 30 and the arrester 20 combined with the installation mechanism 30 are hung on the suspension insulator 10. is available to give.

A plurality of contact protrusions 31c are formed at predetermined intervals on the inner lower surface of the head portion 31b. The contact protrusions 31c contact the surface of the suspension insulator 10 connecting fittings 11 and 12 at predetermined intervals in the circumferential direction so that the head portion 31b can stably maintain the hooked state of the connecting fittings 11 and 12. is supposed to be

In addition, a plate material-shaped fixing member installation portion 31d protrudes from the body portion 31b below the opening of the head portion 31b.

The fixing member 34 is screwed to the fixing member installation part 31d so as to be movable up and down according to the direction of its rotation.

The fixing member 34 includes a bolt portion 34a screwed into a female screw hole formed in the fixing member installation portion 31d, a pressing portion 34b rotatably installed at an upper end of the bolt portion 34a, and a bolt portion 34a. ) and a circular ring-shaped operating portion 34c integrally formed at the lower end of the.

The pressing part 34b is formed in an arc shape on its upper surface so as to cover a predetermined range of the outer circumference of the connecting brackets 11 and 12 of the suspension insulator 10, and a plurality of contact protrusions are formed on the upper surface of the arc shape. It protrudes so that it can more stably contact the outer circumferential surfaces of the connecting brackets 11 and 12. Also, as described above, the pressing portion 34b is rotatably connected to the upper end of the bolt portion 34a.

Therefore, if the head part (31b) is hooked to the connecting brackets (11, 12) of the suspension insulator (10), and the rotary ring of the rotor stick is hooked to the control part (34c) and rotated in the right direction, the bolt part (34a) and The fixing member 34 is moved upward by the screw action of the female screw hole of the fixing member installation part 31d.

Therefore, the pressing part 34b presses the connecting fittings 11 and 12 of the suspension insulator 10, so that the connecting fittings 11 and 12 are between the head part 31b of the installation mechanism 30 and the fixing member 34. The installation mechanism 30 is firmly fixed to the connection brackets 11 and 12 of the suspension insulator 10 by being strongly caught in the insulator 10.

At this time, since the pressing part 34b is rotatable with respect to the bolt part 34a, even when the bolt part 34a rotates and rises, it can maintain a stable contact state with the connecting brackets 11 and 12.

In addition, a circular ring-shaped ring portion 31e is provided on the lower outer side of the head portion 31b. The hook 31e can be hooked with a tool provided at the end of the hot stick to lift the installation mechanism 30 .

Therefore, in a state where the installation mechanisms 30 are coupled to both ends of the lightning arrester 20, use two hot sticks to lift the 'assembly of the lightning arrester 20 and the installation mechanism 30' to the head of the installation mechanism 30 on both sides. The part 31b can be hung on the connecting brackets 11 and 12 on both sides of the suspension insulator 10 installed on the overhead line.

Thereafter, the lightning arrestor 20 can be fixed to the suspension insulator 10 by rotating the fixing member 34 with a rotor stick and tightening it toward the connecting brackets 11 and 12. In this way, the installation of the arrester 20 can be performed by the indirect live wire method, and thus safety is improved.

The lower member 32 includes a body portion 32a connected to the lower portion of the insulator 33 and a circular coupling portion 32b formed at the lower end of the body portion 32a, and the coupling portion 32b has a circular shape. A through hole 32ba is formed. The installation mechanism 30 is fixed to both ends of the arrester 20 using the through hole 32ba. A detailed coupling structure will be described later with reference to FIGS. 5 and 6 .

A C-shaped (or circular ring-shaped) mounting ring 32c is provided on one side of the body portion 32a of the lower member 32. As shown in FIG. 2, lead wires 41 and 42 connected to the arrester 20 are inserted into the mounting ring 32c. In order to protect the lead wires 41 and 42 and to stably maintain the mounting state, a silicon member having good elasticity and frictional force may be attached to the inner circumferential surface of the mounting ring 32c.

In addition, in the lower member 32, a transverse extension 32d may be further formed between the body portion 32a and the coupling portion 32b to correspond to the difference in length between the suspension insulator 10 and the arrester 20. (See Figure 2). When the horizontal extension part 32d is formed, even when the length of the arrester 20 is shorter than that of the suspension insulator 10, the head part 31b of the installation mechanism 30 is connected to the connection brackets 11 and 12 of the suspension insulator 10. ) can be installed.

In addition, of course, it can be divided into two parts screwed together so that the length of the transverse extension part 32b can be adjusted.

As shown in FIG. 4, the insulator 30 includes an inner FRP (resin-reinforced plastic) 33a and a polymer housing 33b surrounding the FRP 33a. An adhesive is applied to the outer circumferential surface of the FRP 33a and adhered to the inner circumferential surface of the polymer housing 33b, so that the two can be more firmly bonded.

The body part 31a of the upper member 31 and the body part 32a of the lower member 32 connected to the upper and lower parts of the insulator 30 are formed in a tubular shape, and the FRP 33a is formed therein. The upper and lower ends are deeply inserted, and the upper and lower ends of the polymer housing 33b surrounding the FRP 33a are also inserted into the body portions 31a and 32a to a predetermined depth. In such an inserted state, the upper member 31 and the lower member 32 may be connected to the upper and lower ends of the insulator 33 as the body portions 31a and 32a are compressed radially inward. The upper member 31 and the lower member 32 of the installation mechanism 30 are made of aluminum so that the respective body portions 31a and 32a can be easily compressed.

The adhesive is also applied to the outer circumferential surfaces of the upper and lower parts of the FRP 33a protruding out of the polymer housing 33b, so that the FRP 33a and the body 31a of the upper member 31 and the lower member 32 are formed. Adhesion is also made between the body parts 32a so that the insulator 33 and the upper member 31 and lower member 32 are more firmly coupled.

Meanwhile, the upper member 31 and the lower member 32 are electrically insulated from each other by the insulator 33.

5 is a view explaining the coupling structure of the arrester 20 and the installation mechanism 30.

Intermediate bolts 21 and 22 are provided at both ends of the arrester 20 as primary terminals and secondary terminals, respectively. The installation mechanism 30 is coupled to the intermediate bolts 21 and 22, respectively. That is, the coupling part 32b at the lower end of the installation mechanism 30 is fixed to the intermediate bolts 21 and 22 via the double nut 50.

First, one of the two nuts constituting the double nut 50 is first fastened to the intermediate bolts 21 and 22, and the intermediate bolts 21 and 22 are inserted into the through hole 32ba to the outside of the intermediate bolt After coupling the coupling part (32b) of the installation mechanism (30) to (21, 22), fasten the remaining one nut of the double nut (50) to the outside. The double nuts 50 on both sides are tightened in the direction of applying pressure to the coupling portion 32b, so that the installation mechanism 30 can be firmly fixed to the respective intermediate bolts 21 and 22.

At this time, as shown in FIG. 6, in each of the intermediate bolts 21 and 22, the coupling part 32b of the installation mechanism 30 is inserted as far as possible inside (towards the arrester body) and installed so as to be in close contact with the arrester 20 body. This is preferable because it secures a place for connecting the lead wires 41 and 42 and prevents foreign substances from being caught in the gap between the arrester 20 and the coupling portion 32b.

After fixing the installation mechanism 30 at both ends of the arrester 20 as described above, connect the lead wires 41 and 42 to the ends of each intermediate bolt 21 and 22 using the connection bracket 60 and bolts and nuts. do. The lead wire 41 connected to the primary side end of the lightning arrestor 20 is connected to the wire of the overhead line and serves as an incoming line of abnormal voltage, and the lead wire 42 connected to the secondary side end is connected to the ground through iron and is connected to the ground wire play a role

In addition, the lead wire 42 connected to the secondary side end is connected to a disconnector 70 using a connection bracket 60 and a bolt nut, and the disconnector 70 is connected to the intermediate bolt 22 . The disconnector 70 is a device that separates the ground wire (lead wire 42) from the lightning arrester 20 by itself being damaged when the zinc oxide element inside the lightning arrester 20 deteriorates and loses its function and does not operate normally.

As described above, in a state in which the installation mechanism 30 is mounted on both sides of the arrester 20, two workers connect an appropriate tool to the hot stick and use the ring part 31e to 'arrestor 20 and installation mechanism' (30) Pick up the 'assembly' and hang the head part (31b) of the installation mechanism (30) on the connection brackets (11, 12) on both sides of the suspension insulator (10) installed first. Subsequently, the 'assembly of the arrester 20 and the installation mechanism 30' is mounted on the suspension insulator 10 by strongly tightening the fixing member 34 toward the connection brackets 11 and 12 using a rotor stick.

As described above, the present invention can install the lightning arrester 20 by the indirect hot wire method, so there is an effect of significantly improving work safety.

In addition, the suspension insulator 10 and the lightning arrestor 20 may be simultaneously installed together without additionally installing the lightning arrester 20 in the state where the suspension insulator 10 is first installed as described above. That is, after assembling the 'assembly of the lightning arrester 20 and the installation mechanism 30' previously assembled as described above to the suspension insulator 10 on the ground, the entire assembly, that is, the 'arrestor 20 and installation mechanism 30 and The suspension insulator (10) assembly' is installed between the wire and the wire of the electric pole.

In this way, by pre-assembling the suspension insulator 10 and the arrester 20 on the ground and processing and installing them together, the efficiency of construction is reconsidered and the construction cost is reduced.

On the other hand, if the arrester 20 is installed on the suspension insulator 10 instead of being installed on the complete iron as in the present invention, it becomes difficult to build a bird's nest in the complete iron, especially to prevent the bird's nest built in the complete iron from touching the arrester 20. As a result, it is possible to prevent power outages caused by bird nests in case of rain.

In addition, the arrester 20 is installed close to the suspension insulator 10, and the lead wires 41 and 42 can be mounted by inserting the lead wires 41 and 42 into the mounting ring 32c provided in the installation mechanism 30, so that the lead wires 41 and 42 ) is reduced in length and neatly organized. Therefore, it is possible to prevent the lead wires 41 and 42 (particularly, the primary side incoming lead wire 41) from drooping down the wire, and lead wires connected to the lightning arrester and the transformer switch are complicatedly entangled and occupy a large space above the pole. be able to prevent

Therefore, it is possible to easily secure a safe work space when a worker wants to perform any necessary work at the top of the pole, and in addition, it is possible to prevent accidents that may occur during work by preventing errors in identifying the target wire, It has the effect of improving the aesthetics of Jeonju.

In addition, even if an abnormality occurs in the arrester 20 and the disconnector 70 operates, the ground-side lead wire 42 is placed on the hook 32c of the installation mechanism 30 so that it does not hang down for a long time, thereby preventing other high-voltage charging parts. Prevents accidents by preventing contact with

In addition, the installation mechanism 30 may be fixed to the connecting brackets 11 and 12 of the suspension insulator 10 at a free angle. Therefore, the arrester 20 can be freely installed at any position in the circumferential direction around the suspension insulator 10. Therefore, it is possible to install the arrester 20 in an optimal position where it does not come into contact with surrounding wires, lead wires, and electrical equipment, thereby improving the efficiency and safety of construction.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and various modifications and other equivalent embodiments will be made by those skilled in the art in the field to which the technology belongs. You will understand that it is possible. Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: suspension insulator 11, 12: connection bracket
20: arrester 21,22: middle bolt
30: installation mechanism 31: upper member
31a: body part 31b: head part
31c: contact protrusion 31d: fixing member installation part
31e: ring part 32: lower member
32a: body part 32b: coupling part
32c: hook 33: insulator
33a: FRP 33b: polymer housing
41,42: lead wire 50: double nut
60: connection bracket 70: disconnector

Claims (13)

Hyeonsuaejawa;
an installation mechanism in which upper ends are fixed to both ends of the suspension insulator;
Lightning arresters, both ends of which are coupled to the lower ends of the installation mechanism on both sides;
Lightning arrester installation structure comprising a. The method of claim 1,
Lightning arrester installation structure, characterized in that the lead wire connected to the end of the arrester is inserted into the holder provided in the installation mechanism. The method of claim 1,
The arrester installation structure, characterized in that the installation mechanism can be freely installed at any angle on the circumference centered on the suspension insulator. an upper member coupled to an end of the suspension insulator;
a lower member coupled to an end of the arrester;
an insulator connecting the upper and lower members in an insulated state;
Lightning arrester installation mechanism comprising a. The method of claim 4,
The upper member includes a body portion connected to the upper portion of the insulator, a head portion extending from the body portion and formed in a ring shape having a downward opening, and a fixing member installation portion formed in the body portion, so that the head portion is screwed together when moving upward. A lightning arrester installation mechanism that includes a fixing member that presses and fixes the connecting bracket of a suspension insulator inserted inside. The method of claim 5,
The fixing member includes a bolt part screwed into the female screw hole formed in the fixing member installation part, a pressing part rotatably connected to the upper end of the bolt part and pressurizing and fixing the connecting bracket of the suspension insulator, and a ring integrally formed at the lower end of the bolt part. Lightning arrester installation mechanism including a shape manipulation part. The method of claim 5,
Lightning arrester installation mechanism, characterized in that a plurality of contact protrusions are formed at equal intervals on the inner surface of the head portion. The method of claim 5,
Arrester installation mechanism, characterized in that the ring-shaped ring portion is formed so that the installation mechanism can be lifted by hanging an indirect live wire tool on the outer side of the head portion. The method of claim 4,
The lower member includes a body portion connected to the lower portion of the insulator and a coupling portion formed at a lower end of the body portion, and a through hole is formed in the coupling portion. The method of claim 9,
Arrester installation mechanism, characterized in that the body portion of the lower member is provided with a holder capable of holding a lead wire connected to the arrester. The method of claim 9,
Arrester installation mechanism, characterized in that the intermediate bolt provided at the end of the arrester is inserted into the through hole of the coupling portion, and the coupling portion is fixed to the intermediate bolt by a pair of double nuts. The method of claim 9,
A lightning arrestor installation mechanism, characterized in that a transverse extension is formed between the body portion and the coupling portion, and the transverse extension portion is composed of two parts screwed together. The method of claim 4,
The insulator includes FRP (resin-reinforced plastic) provided on the inside and a polymer housing surrounding the outside of the FRP, and the upper and lower ends of the insulator are inserted into the body of the upper member and the body of the lower member, respectively, and are compressed. Arrester installation mechanism, characterized in that.

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