KR-102961891-B1 - INSULATION PLUG INSTALLATION APPARATUS OF GROUND TRANSFORMER ELBOW CONNECTOR

KR102961891B1KR 102961891 B1KR102961891 B1KR 102961891B1KR-102961891-B1

Abstract

The present invention provides an installation device for an insulating plug of a ground switch elbow connector that can rotate the insulating plug of the elbow connector around a horizontal axis of rotation so as not torsional stress is applied. The installation device includes i) a torque wrench unit comprising a wrench portion that rotates an insulating plug protruding horizontally from the elbow connector of the ground switch, and ii) a guide unit that connects the elbow connector and the torque wrench unit. The guide unit connects the elbow connector and the torque wrench unit such that the axis of rotation on which the insulating plug and the wrench portion are rotated is positioned in a horizontal direction.

Inventors

이준희
김민석

Assignees

한국전력공사

Dates

Publication Date: 20260507
Application Date: 20230906

Claims (13)

A torque wrench unit including a wrench part for rotating an insulating plug protruding horizontally from an elbow connector of a ground switch, and A guide unit for connecting the above elbow connector and the above torque wrench unit Includes, The above guide unit is, The elbow connector and the torque wrench unit are connected so that the rotation axis on which the insulating plug and the wrench part rotate is arranged in a horizontal direction, The above guide unit is, A grip portion that secures the above elbow connector to wrap around it, and A fixing part that secures the above grip part and the above torque wrench unit Includes, The above grip portion is, When the insulating plug is inserted into the wrench part, the elbow connector is fixed so that the rotation axis on which the insulating plug and the wrench part rotate is arranged in a horizontal direction, and The above grip portion is, An insulating plug installation device for a ground switch elbow connector, wherein the inner surface has a shape corresponding to the outer surface of the elbow connector and is connected by sliding onto the elbow connector.
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In paragraph 1, The above grip portion is, A first grip portion that secures one side of the above elbow connector, and A second grip portion that secures the other side of the above elbow connector to wrap around it. Includes, The above fixed part is, A first fixing part extending from one side of the torque wrench unit to the first grip part, and A second fixing part extending from the other side of the torque wrench unit to the second grip part. An insulating plug installation device for a ground switchgear elbow connector including
In paragraph 4, The first grip portion, the second grip portion, the first fixing portion, and the second fixing portion are formed of an elastic material, An insulating plug installation device for a ground switch elbow connector, wherein when the first grip portion and the second grip portion are fastened to the elbow connector, the first fixing portion and the second fixing portion spread outward or gather inward, and the elbow connector is inserted into the first grip portion and the second grip portion.
In paragraph 1, The above torque wrench unit is, A main body including a handle held by a user, A rotary motor that rotates the above wrench part, A trigger operated by a user and connected to the rotary motor to adjust the rotational torque value at which the wrench part rotates, and A display that externally displays the rotational torque value of the above-mentioned wrench part. An insulating plug installation device for a ground switchgear elbow connector that further includes
In paragraph 6, The above torque wrench unit is, A sensor that detects the rotational torque value of the above-mentioned wrench part as it rotates, and A control unit that controls the rotational torque value detected by the sensor to be displayed on the display. An insulating plug installation device for a ground switchgear elbow connector that further includes
In Paragraph 7, The above control unit includes, A preset range target torque value is input for the wrench part to rotate the insulating plug to a normal state, and The above control unit is, An insulating plug installation device for a ground switchgear elbow connector, which controls the user to operate the trigger to rotate the insulating plug with the wrench part and displays the test torque value and the target torque value on the display.
In paragraph 8, The above control unit is, By comparing the above test torque value with the above target torque value, If the above test torque value deviates from the range of the above target torque value, the above display indicates that it is in an abnormal state, and An insulating plug installation device for a ground switch elbow connector that controls the display to indicate a normal state if the above test torque value is within the range of the above target torque value.
In Paragraph 9, The range of the preset target torque value input to the control unit is 800 kgf*cm to 840 kgf*cm, and The above control unit is, If the above test torque value deviates from the range of the above target torque value, which is 800 kgf*cm to 840 kgf*cm, the above display indicates that it is in an abnormal state, and An insulating plug installation device for a ground switch elbow connector that indicates on the display that it is in a normal state if the above test torque value is within the range of the above target torque value, which is 800 kgf*cm to 840 kgf*cm.
In Paragraph 9, The above control unit is, If the above test torque value is within the range of the above target torque value, An insulating plug installation device for a ground switch elbow connector, wherein the above-mentioned wrench part controls the rotation motor to maintain the rotational torque value that rotates the insulating plug in the current state.
In Paragraph 9, The above torque wrench unit is, An insulating plug installation device for a ground switch elbow connector, further comprising a speaker that notifies the outside of the rotational torque value detected by the sensor and the abnormal state or normal state determined by the control unit.
In Paragraph 9, The above torque wrench unit is, It further includes an exciter installed within the main body and generating vibrations to the outside, The above control unit is, An insulating plug installation device for a ground switch elbow connector that controls the exciter to vibrate the main body when the above test torque value deviates from the range of the above target torque value.

Description

INSTALLATION APPARATUS OF GROUND TRANSFORMER ELBOW CONNECTOR The present invention relates to an insulating plug installation device for a ground switch elbow connector. More specifically, the present invention relates to an insulating plug installation device for a ground switch elbow connector capable of separating or connecting the insulating plug of the ground switch elbow connector. In the event of faulty installation or equipment failure of the elbow connector of a ground switch, use a torque wrench to detach or attach the insulation plug of the elbow connector. When detaching an insulation plug that protrudes from the outside of the elbow connector, the plug must be rotated using a torque wrench so that it rotates only around a horizontal axis. However, when an operator separates or tightens the insulation plug of an elbow connector using a standard torque wrench, not only is rotational force applied to the insulation plug around a horizontal axis, but torsional stress is also applied in the up, down, left, and right directions. If torsional stress is applied to the insulation plug in these directions, damage such as cracks may occur in the insulation plug or the bushing of the ground switch. The torsional stress applied to the insulation plug in these directions can increase or decrease depending on the operator's skill level. In other words, the balance of forces in the up, down, left, and right directions that rotate the torque wrench can vary depending on the operator's proficiency. Therefore, there is a need for a device that can accurately rotate the insulating plug around a horizontal axis of rotation without applying torsional stress to the insulating plug in the up, down, left, and right directions. FIG. 1 is a drawing showing the state in which an insulating plug installation device according to one embodiment of the present invention is connected to an elbow connector. Figure 2 is a drawing showing the state in which the insulating plug installation device of Figure 1 is separated from the elbow connector. Figure 3 is a top view of the insulating plug installation device of Figure 1 connected to the elbow connector. Figure 4 is a diagram showing the configuration of the torque wrench unit of the insulating plug installation device of Figure 1. Figure 5 is a drawing showing the display of the torque wrench unit of Figure 4. The technical terms used herein are for the reference of specific embodiments only and are not intended to limit the invention. The singular forms used herein include plural forms unless phrases clearly indicate otherwise. The meaning of "comprising" as used in the specification specifies a particular characteristic, area, integer, step, action, element, and/or component, and does not exclude the presence or addition of other particular characteristic, area, integer, step, action, element, component, and/or group. Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as generally understood by those skilled in the art to which this invention pertains. Terms defined in commonly used dictionaries are further interpreted to have meanings consistent with relevant technical literature and the present disclosure, and are not interpreted in an ideal or highly formal sense unless otherwise defined. For example, the term “applied” described below is interpreted to include both the state in which it is appropriately used and the state prior to appropriate use. Expressions described in the singular in this specification may be interpreted as singular or plural unless explicit expressions such as "one" or "single" are used. In this specification, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component. In the flowchart described with reference to the drawings in this specification, the order of operations may be changed, several operations may be merged or some operations may be divided, and certain operations may not be performed. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. FIGS. 1 to 3 are schematic perspective views showing the shape of an insulating plug installation device (10) (hereinafter referred to as the insulating plug installation device (10)) of a ground switch elbow connector according to an embodiment of the present invention. Specifically, FIG. 1 shows t