KR102525455B1 - Electric field type defective insulator detector wing extension sled for preventing insulator separation, and electric field type defective insulator detector having the same and method therefor - Google Patents

Abstract

The present invention relates to a wing extension sled for preventing an insulator separation from an electric field-type fault insulator detector. The sled, which is in contact with an insulator string and is provided to be movable in an electric field-type fault insulator detector, comprises: a sled body which has both ends spaced apart and formed roundly to be elastically deformable, and is formed to be slidable along insulators of the insulator string; and guide horns which are connected to both ends of the sled body, and provides an expanded guide opening relative to the sled body so that the insulator is guided to the inside of the sled body from both ends of the sled body. The sled maintains smooth contact between the insulator string and the sled in electric field measurement of the insulator force for detecting fault insulators in the insulator string, thereby ensuring accurate electric field measurement of the insulator string from start to finish.

Description

Field-type defective insulator detector wing extension sled for preventing insulator breakaway, and electric field-type defective insulator detector having the same and method thereof THEREFOR}

The present invention relates to an electric field type failover detector insulator breakaway prevention wing extension sled, and more particularly, to an electric field failover detector insulator breakaway preventive wing extension sled for detecting defective insulators with deteriorated insulation of a transmission line.

In general, insulators form electrical insulation with supports such as transmission lines and steel towers, provide mechanical force for supporting wires, have high dielectric strength against normal voltage and internal abnormal voltage of lines, and are sufficiently resistant to rain and snow. It requires high surface resistance, low leakage current, no corona discharge at normal transmission voltage, and sufficient mechanical strength when an external force (wind, snow, rain, etc.) is added to the weight of the wire.

After the insulator is installed on the line, it is determined whether or not it is defective by using the difference in the relative electric field size between two adjacent insulators among insulators, which are bundles connected to each other. The electric field between the insulators in an insulator is measured using a field failure detector.

In such an electric field type defective insulator detector, in a state where the probe for detecting the defective insulator is attached to the sled and closely attached to the insulator, push it to the physically possible end of the insulator (power line side), and then pull it to the starting position. It is configured so that the electric field scanning between the insulators is performed by the probe unit.

Since the probe unit measures the shared voltage of each insulator within the insulator stack, the sled must be closely attached to the insulator stack during diagnosis. At this time, if the sled is not adhered to the insulator, the test will fail and data will not be saved, so rework is required.

Since field-type faulty insulator detection is performed in a live wire state, a safety distance from the ultra-high voltage charging part must be maintained. Accordingly, a hot stick, which is an insulation rod insulated from the sled, must be used by connecting it to the sled. However, the higher the voltage of the live wire, the longer the length of the insulator lead, and thus requires a lot of effort from the operator to bring the sled into close contact with the insulator lead.

In this way, the conventional field type faulty insulator detector has a structure in which a sled is brought into contact with an insulator on a transmission tower and the tower, and a probe is put on the insulator and then a hot stick is connected and used.

However, since the conventional field type faulty insulator detector has a structure in which the sled covers only half of the insulator, in the vertical insulator device (suspended type, jumper supported) diagnosis work, the hot stick is almost used to make the sled adhere to the insulator. It is necessary to set it upright and apply force to the insulator, which places a great burden on the safety of the operator.

That is, since the electric field of the insulator must be measured by the operator of the vertical insulator holding the hot stick almost vertically and moving the sled to the lower end of the insulator by bringing the sled into close contact with the insulator. As the insulator moves to the lower end of the insulator, the contact force between the insulator and the sled is weakened, or since more force must be applied to maintain the contact force, it is difficult to measure the electric field at the lower end of the insulator.

For example, in the case of a 345kV vertical insulator device, a hot stick with a length of about 6.5m must be used corresponding to the length of the insulator 4.5m long, so that the sled is at the end (power line side) of the insulator. Since the adhesion is not good and can come off, inspection failure easily occurs, data is not stored well, and rework is frequently required, so there is a problem in that it takes a long time to work.

Registered Utility Model No. 20-268687 "Electrical field failure detector"

The present invention for solving the above problems is to maintain the contact between the insulator and the sled smoothly in the electric field measurement of the insulator for detecting the defective insulator, thereby measuring the electric field of the insulator from the beginning to the end of the insulator and It is to provide a field-type failure insulator detector insulator detachment-preventing wing extension sled that makes data storage work performed accurately.

Furthermore, the present invention is an electric field measurement operation for detecting defective insulators of vertical insulators by preventing weakening of the contact force between insulators and sleds toward the lower end of insulators installed vertically or by firmly maintaining the contact state of insulators. It is to provide an electric field-type failure insulator detector and an extension sled for preventing insulator separation that makes it easy.

The configuration of the present invention is a sled provided to be movable in contact with an insulator in an electric field type defective insulator detector, with both ends spaced apart from each other and formed round to be elastically deformable, but slideable along the insulators of the insulator formed sled body; and guide horns connected to both ends of the sled body and providing guide openings extending to the sled body so that insulators are guided into the sled body at both ends of the sled body, When the sled body is installed on the insulator, the insulator expands and spreads elastically as the insulator contacts the guide horn, and elastically contracts as the insulator is positioned inward, wrapping the insulator round, and sliding on the insulator Provided is a movably installed electric field failure insulator detector insulator separation prevention wing extension sled.

The sled body may include one or more arc-shaped holders; skid holders intersecting the one or more arc-shaped holders and being in contact with each other along the length direction of the insulator; a curved holder rotatably connected to both ends of the arc-shaped holder; and a rotation coupling portion connecting the arcuate holder and the curved holder, and a torsion spring may be provided on the rotation coupling portion to elastically spread the curved holder with respect to the arcuate holder.

The present invention may further include guide balls or rollers located at lower ends of both sides of the sled body to slide the insulator toward the inside of the sled body.

The skid holder may have skid slopes extending outwardly from the sled body at both ends thereof.

The arc-shaped holder and the curved holder are provided in pairs, and the skid holder may be disposed as a pair at a plurality of points along the circumferential direction of the arc-shaped holder and the curved holder.

The guide horn may be formed in a triangular shape with a gradually smaller width from an uppermost portion coupled to the sled body to a lowermost portion, and may be formed in a curved shape extending from a lower portion of the sled body to both sides.

Another configuration of the present invention is to provide an electric field type defective insulator detector equipped with the above-mentioned field type defective insulator detector insulator separation preventing wing extension sled to detect a defective insulator in an insulator connecting a transmission line and a post.

Another configuration of the present invention is to use the electric field failure detector described above, wherein the sled main body of the electric field failure detector is elastically wrapped around the vertical insulator stack, and the electric field failure detector After installing, it is possible to provide an electric field type defective insulator detection method for detecting a defective insulator by moving the sled body from the top to the bottom of the vertical insulator with a hot stick to collect electric field data of the insulators of the insulator. there is.

The present invention according to the configuration as described above, in the electric field measurement of the insulator for detecting defective insulators, maintains the contact between the insulator and the sled smoothly, thereby measuring the electric field of the insulator and storing data from the beginning to the end of the insulator. It is possible to provide an extension sled with an electric field failure insulator detector and an insulator breakaway prevention wing that makes the work done accurately.

Furthermore, the present invention is an electric field measurement operation for detecting defective insulators of vertical insulators by preventing weakening of the contact force between insulators and sleds toward the lower end of insulators installed vertically or by firmly maintaining the contact state of insulators. It is possible to provide an electric field failure insulator detector and an extension sled for preventing insulator breakaway.

1 is a work diagram for measuring the electric field of a vertical insulator coil using a conventional electric field defective insulator detector.
2 is a three-dimensional view of an extension sled for insulator departure prevention wings of an electric field type defective insulator detector according to an embodiment of the present invention.
FIG. 3 is a detailed view of the rotation coupling of FIG. 2 .
Figure 4 is a detailed view of the guide horn of Figure 3;
5 is a state diagram in which an electric field type defective insulator detector according to an embodiment of the present invention is installed in an insulator.
Figure 6 is a front view of Figure 5;

Hereinafter, various embodiments of the present invention will be described by specific embodiments shown in the accompanying drawings. Differences in the embodiments of the present invention should be understood as not mutually exclusive. That is, without departing from the technical spirit and scope of the present invention, specific shapes, structures, and characteristics described may be implemented in other embodiments in relation to the embodiments, and the location or arrangement of individual components in each disclosed embodiment. It should be understood that may change, and similar reference numerals in the drawings indicate the same or similar functions in various aspects, and the length, area, thickness, and the like may be exaggerated for convenience.

2 is a three-dimensional view of an extension sled for insulator departure prevention wings of an electric field type defective insulator detector according to an embodiment of the present invention.

Referring to FIG. 2 , the field type defective insulator detector according to an embodiment of the present invention, the insulator departure prevention wing extension sled 100 is provided to be movable in contact with the insulator string 1 in the field type defective insulator detector. As (100), a sled body 110 movably installed in the insulator 1 by wrapping the insulator 2 of the insulator 1, and the insulator 2 inside the sled body 110 It is configured to include a guide horn 140 to guide.

First, the sled main body 110 has both ends spaced apart from each other and is formed in a round shape to be elastically deformable, and is formed to be slidably movable along the insulators 2 of the insulator 1.

The sled body 110 includes an arc holder 111 formed to surround a part of the insulator 2, a curved holder 112 rotatably connected to both ends of the arc holder 111, and a circular arc holder 112. It is configured to include a skid holder 120 that is fixed to the arc holder 111 and is in contact with the outer circumferential surface of the insulator 2 along the length direction of the insulator 1.

The arc-shaped holder 111 and the curved holder 112 are provided to allow relative rotation of the arc-shaped holder 111 and the curved holder 112, and a rotational coupling part to which elasticity is given to restore the rotated position ( 130).

The circular arc holder 111 and the curved holder 112 form a round shape and are arranged in pairs with a vertical gap. That is, the arc-shaped holder 111 and the curved holder 112 have a circular shape formed to surround the insulator 2 almost roundly, and both ends of the guide horn 140 are spaced apart.

When the sled body 110 is installed on the insulator 1, the insulator 2 is elastically expanded and widened as the insulator 2 contacts the guide horn 140, and the insulator 2 is elastically contracted as the insulator 2 is positioned inward. It surrounds the insulator 2 round and is installed to be able to slide on the insulator 1.

The skid holder 120 may be disposed in pairs at a plurality of points along the circumferential direction of the circular arc holder 111 and the curved holder 112 . That is, two skid holders 120 may be disposed at intervals of approximately 120 degrees along the circumferential direction of the sled body 110 .

The skid holder 120 is provided with a skid inclined part of a ski shape outward from the sled body 110 at both ends, and the insulator (2) of the insulator 1 is not caught by the skid inclined part 2) Moves well between them.

FIG. 3 is a detailed view of the rotation coupling of FIG. 2 .

Referring to FIGS. 2 and 3 , the arcuate holder 111 and the curved holder 112 are coupled by a rotation coupling part 130 . The rotation coupling part 130 is provided with a torsion spring 136 that makes the curved holder 112 elastically rotate and spread with respect to the arc-shaped holder 111 .

In the rotation coupling part 130, a pair of inner brackets 132 provided on a curved holder 112 are coupled to a pair of outer brackets 131 provided on an arc-shaped holder 111 by a rotational shaft 135. It consists of The torsion spring 136 is disposed between a pair of inner brackets 132 so as to surround the rotational shaft 135, and has elastic torsion as one end and the other end are fixed to the outer bracket 131 and the inner bracket 132, respectively. provides

Figure 4 is a detailed view of the guide horn of Figure 3;

Referring to FIGS. 2 and 4 , guide horns 140 are provided at the lower ends of the curved holders 112 on both sides of the sled 100 .

The guide horn 140 is connected to both ends of the sled body 110, and the sled body 2 is guided to the inside of the sled body 110 at both ends of the sled body 110 ( 110) to provide an extended guide opening 141, formed in a triangular shape in which the width gradually decreases from the top to the bottom coupled to the sled body 110, and both sides at the lower end of the sled body 110 It can be formed in a curved or inclined shape that spreads to .

Meanwhile, referring to FIG. 4 , in the present embodiment, guide balls 142 located at both lower ends of the sled body 110 to slide the insulator 2 toward the inside of the sled body 110 may be further included. there is.

The guide ball 142 makes it easy to insert and place the insulator 2 toward the sled 100, and is provided in a round shape at the upper end of the guide horn 140, but is arranged in a rotatable ball bearing or roller bearing structure. do.

FIG. 5 is a state diagram in which an extension sled of an electric field type defective insulator detector insulator separation prevention wing is installed in an insulator according to an embodiment of the present invention, and FIG. 6 is a front view of FIG. 5 .

Referring to FIGS. 5 and 6 , a state in which an extension sled 100 of an electric field type defective insulator detector according to an embodiment of the present invention is installed in an insulator battery 1 is shown.

The sled 100 according to this embodiment is installed on the insulator 1 so as to wrap the insulator 2 of the insulator 1 by being inserted downward from the top of the insulator 1. At this time, since the sled 100 is composed of the arc-shaped holder 111 and the curved holder 112 that are elastically coupled by the rotation coupling part 130, the outer circumferential surface of the insulator 2 is the guide horn 140 As it comes into contact, it spreads to both sides. Accordingly, the insulator 2 slides along the guide horn 140, is disposed inside the sled 100 through the guide opening 141 provided at the bottom of the sled 100, and the arc holder 111 ), the curved holder 112 is elastically restored to its original position to prevent the sled 100 from being separated from the insulator 2.

As described above, the sled 100 according to the present embodiment is inserted into the insulator 1 so as to sufficiently surround the insulator 1 and is movably installed on the insulator 1 . Conversely, the lower part of the sled 100 is elastically opened as a sufficient pulling force is applied to the upper part, and it is possible to separate from the insulator 1.

On the other hand, according to another embodiment of the present invention, the insulator breakaway prevention wing extension sled 100 of the electric field type defective insulator detector is included to detect the defective insulator 2 in the insulator 1 connecting the transmission line and the post. It is possible to provide an electric field type defective insulator detector provided.

In addition, according to another embodiment of the present invention, the above-described electric field failure detector is used, and the vertical insulator 1 is elastically wrapped around the sled main body 110 of the electric field failure detector. After installing the electric field defective insulator (2) detector in (1), the sled body 110 is moved from the top to the bottom of the vertical insulator (1) with a hot stick, so that the insulator (2) of the insulator (1) It is possible to provide an electric field type defective insulator detection method for detecting a defective insulator by collecting the electric field data of these.

The electrical field type defective insulator detector according to the embodiments of the present invention, the insulator breakaway preventing wing extension sled, the electrical field type defective insulator detector, and the method thereof, can be used without the operator applying force to the insulator when diagnosing a vertical insulator device. To prevent the detector from escaping from the end point of the insulator, the sled wings cover the entire insulator to provide a tightly closed cover-like structure. And the wings are spread by the spring to cover the insulator, and the power of the spring provides a structure in which the wings do not open themselves, making it easy to detect defective insulators in the insulator.

That is, in the present embodiments, since the sled is improved into a tong-type structure and the sled is always in close contact with the insulator, the vertical insulator device (suspended type, jumper support) diagnosis work can be easily performed, improving operator convenience and efficiency. And since the structure surrounds the insulator, the force used by the operator when holding the hot stick is greatly reduced.

Moreover, it is possible to secure safety (26,697 units nationwide in Korea) when working on suspended and angle steel towers with vertical insulators installed, and in the case of 345kV vertical insulators, remove the hot stick for a long time (about 6.5m). Even when working, the sled is well attached to the insulator at the end (power line side) of the sled, so accurate diagnosis can be made and reliability of inspection can be improved.

In addition, in the present embodiments, a little less power is consumed than a rigid type of work method in which the stick is supported by applying force to both hands, thereby reducing operator fatigue and ensuring the safety of the operator due to relatively free movement.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in the above specification are only exemplified for the purpose of explaining the embodiment according to the concept of the present invention, and the implementation according to the concept of the present invention Examples may be embodied in many forms and should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can be changed and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosed form, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this specification, it should not be interpreted in an ideal or excessively formal meaning. don't

As described above, the embodiments of the present invention have been described, but based on this, those skilled in the art can add, change, or delete components within the scope not departing from the spirit of the present invention described in the claims. Or, the present invention may be variously modified and changed by addition or the like, which will also be included within the scope of the present invention.

1: Insulate
2: Insulated
5: Hotstick
10, 100: sled
11, 110: sled body
111: arc holder
112: curved holder
120: skid holder
130: rotation coupling
131: outer bracket
132: inner bracket
135: axis of rotation
136: torsion spring
140: guide horn
141: guide opening
142: guide ball

Claims (8)

A sled provided to be movable in contact with an insulator in an electric field type defective insulator detector,
A sled body formed to be elastically deformable by having both ends spaced apart from each other and being round, and formed to be slidable along the insulators of the insulator; and
A guide horn connected to both ends of the sled body and providing a guide opening extended to the sled body so that the insulator is guided to the inside of the sled body at both ends of the sled body,
When the sled body is installed on the insulator, the insulator expands and spreads elastically as the insulator contacts the guide horn, and elastically contracts as the insulator is positioned inward, wrapping the insulator round and sliding on the insulator An electric field type defective insulator detector characterized in that it is installed movably, the insulator departure prevention wing extension sled. According to claim 1,
The sled body,
one or more arcuate holders;
skid holders intersecting the one or more arc-shaped holders and being in contact with each other along the length direction of the insulator;
a curved holder rotatably connected to both ends of the arc-shaped holder; and
And a rotational coupling portion connecting the arc-shaped holder and the curved holder,
The electrical field type defective insulator detector insulator departure prevention wing extension sled, characterized in that the rotating coupling portion is provided with a torsion spring that elastically spreads the curved holder with respect to the arcuate holder. According to claim 2,
The field type defective insulator detector further comprises guide balls or rollers positioned at lower ends of both sides of the sled body to slide the insulator toward the inside of the sled body. According to claim 2,
The field-type defective insulator detector insulator departure prevention wing extension sled, characterized in that the skid holder has a skid inclined portion extending outward from the sled body at both ends. According to claim 2,
The arc-shaped holder and the curved holder are provided in pairs, and the skid holder is disposed as a pair at a plurality of points along the circumferential direction of the arc-shaped holder and the curved holder. Anti-leaking wing extension sled. According to claim 1,
The guide horn is formed in a triangular shape in which the width gradually decreases from the uppermost part to the lowermost part coupled to the sled body, and is formed in a curved shape extending from the lower part of the sled body to both sides. Anti-wing extension sled. The electric field type defective insulator detector according to claim 1, wherein the field type defective insulator detector is equipped with an extension sled for preventing insulator breakaway to detect defective insulators in an insulator connecting a power transmission line and a post. The electric field failure detector according to claim 7 is used, after installing the electric field failure detector in the vertical insulator stack by elastically wrapping the vertical insulator stack with the sled body of the field failure detector, and detecting a defective insulator by moving the sled body from the uppermost part of the vertical insulator to the lowermost part with a hot stick and collecting electric field data of the insulators of the vertical insulator.

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