KR102276646B1 - Jig for attaching the contact sheel assembly of the on load tap changer - Google Patents

Abstract

In an embodiment of the present invention, the spacing of the contact tips 210 is set in the contact assembly 200 having a pair of contact tips 210 spaced apart from each other and configured in plurality to conduct a load current in the on-load tap changer. Includes an attachment jig 100 for fixing for.

Description

Jig for attaching contact assembly of on-load tap-changer {JIG FOR ATTACHING THE CONTACT SHEEL ASSEMBLY OF THE ON LOAD TAP CHANGER}

The present invention relates to a jig for attaching a contact assembly of an on-load tap-changer.

In general, the On Load Tap Changer changes the tap voltage of the transformer in the live state to maintain the proper voltage without interruption of the power supply against voltage fluctuations due to load fluctuations or system changes, thereby changing the specified winding voltage. It is a device that automatically adjusts the system with the It consists of Automatic Voltage Requlator, Oil Filter Unit, Conservator for OLTC, Protection Relay, Tap Position Indicator, Failure Alarm Indicator, etc.

The on-load tap-changer configured as described above has a unique configuration, so maintenance takes a lot of time and requires an experienced and skilled operator.

Such an on-load tap-changer should be inspected about 70,000 times or once every 6 to 7 years, and is usually inspected when it is determined that inspection is necessary regardless of the inspection period.

At this time, for the inspection and repair of the on-load tap changer, it is a process of checking whether the installed parts are replaced, replacing the parts that need replacement, and cleaning and reassembling the tap changer to remove foreign substances. is done

Various conventional techniques exist for inspection and replacement of the on-load tap changer. In particular, the prior art has been mainly proposed with a jig for inspecting the upper plate number window of the on-load tap changer and a jig for inspecting the shell.

However, the on-load tap-changer is equipped with a number of contact assemblies. Here, the contact points are a contact portion for flowing a load current, and a plurality of them are fixedly installed at regular intervals, and each contact includes a pair of contact tips spaced up and down, and a mechanical configuration for supporting and fixing the contact tips.

Contact tips have different intervals from the upper and lower sides for each product, and when used for a long time, maintenance and replacement are required through periodic inspection due to deterioration or damage caused by wear.

However, as described above, since the spacing of the contact tips is different for each product, the operator manually adjusts the spacing in the field and proceeds assembling. Therefore, in the prior art, it takes a long time even for a highly skilled worker because it has to be performed manually without a separate auxiliary device for fixing and spacing the contact tip, and it is difficult for a beginner with low skill to perform the task. .

Therefore, it is necessary to develop a technology that can solve the difficulties in the field at present.

Republic of Korea Patent Registration Publication No. 10-1441114 (2014.09.05, registered)

Therefore, the present invention was drawn out in order to solve the conventional problems as described above, and an object of the present invention is to attach the contact tip of the on-load tap-changer device for easy replacement and inspection of the contact tip during the inspection of the on-load tap-changer device. To provide a jig.

The present invention may include the following examples in order to achieve the above object.

An embodiment of the present invention includes an attachment jig for setting the spacing of the contact tips in a contact assembly having a pair of contact tips spaced apart from each other and configured in plurality to conduct load current in the on-load tap changer device, , The contact assembly includes a support bar supporting the contact tips spaced apart from each other on one side, a support piece bent so as to be in close contact with the opposite surface of the support bar and the side of the attachment jig, respectively, and a tip fixing tip fixing the contact tip on the opposite surface of the support bar The attachment jig includes a lever, the attachment jig has a width matching the set interval of the contact team, the main body having both sides to which the support piece is in close contact, and the fastening tube and the side surface extending laterally from the inside to communicate between the both sides of the body It is possible to provide a jig for attaching the contact assembly of the on-load tap-changer, characterized in that it communicates with the support piece of the contact assembly in close contact with the fastening pipe and includes a fixing means for fixing the support piece.

Therefore, the present invention can reduce the working time as it is easy to adjust the spacing of the contact tips spaced apart from each other when fixing the contact tips, and even a low-skilled worker can work, saving labor costs and shortening the working time possible effect.

1 is a perspective view showing an assembled state of the jig for attaching the contact assembly of the on-load tap changer according to the present invention.
FIG. 2 is an exploded view of FIG. 1 .
FIG. 3 is a front view of FIG. 1 ;
4 is a perspective view showing an end of the attachment jig.
5 is a view showing another embodiment of the attachment jig.
6 is a plan view showing another embodiment of the attachment jig.
7 is a perspective view of FIG. 6 ;

Although the present invention can be made various changes and can have various embodiments, it will be described in detail by exemplifying specific embodiments in the drawings. It is not intended to limit the present invention to a specific embodiment, and to any one of all modifications, equivalents or substitutes included in the spirit and scope of the present invention for connecting and/or fixing structures extending in different directions. should be understood as applicable.

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

As used herein, "includes." Or "have." The term such as is intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and is intended to indicate that one or more other features or numbers, steps, operation, component, part or It should be understood that it does not preclude the possibility of the existence or addition of combinations thereof.

In addition, in the description of the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view showing a state in which a jig for attaching a contact assembly of an on-load tap changer according to the present invention is assembled, FIG. 2 is an exploded view of FIG. 1, and FIG. 3 is a front view of FIG.

1 to 3, the present invention provides an attachment jig 100 for supporting the assembly and spacing adjustment of the contact assembly 200, and a fixing means for fixing the contact assembly 200 to the attachment jig 100 ( 300) is included.

The contact assembly 200 includes a pair of contact tips 210 spaced apart from each other, a support bar 220 extending in one direction, and a support piece ( 240 , and a tip fixing lever 250 for fixing the contact tip 210 by communicating with the support piece 240 , and a fixing piece 230 extending from the support bar 220 .

The contact tips 210 are spaced apart from each other as a pair and are respectively fixed to one surface of the support bar 220 . Here, the contact tip 210 is fixed by the tip fixing lever 250 which is rotated on the opposite surface of the support bar 220 .

The support bar 220 extends in one direction and may be manufactured to have an area set so that the contact tip 210 can be attached from one surface at each end thereof.

The support piece 240 is supported as a pair consisting of a horizontal plate 241 in close contact with the opposite surface of the support bar 220 and a bending plate 242 bent from the horizontal plate 241 as a 'L' shape. It is fixed to be spaced apart from each other on opposite surfaces of the bar 220 . Here, the support piece 240 supports the tip fixing lever 250 connected to the contact tip 210 to be rotated and pressed. In particular, in the support piece 240 , the horizontal plate 241 is in close contact with the opposite surface of the support bar 220 , and the bending plate 242 is in close contact with the side surface of the body 110 , respectively. In addition, the support piece 240 may be formed with a through hole (reference number not shown) so that the fixing means 300 can communicate.

One or more extension pieces 230 are bent in an inclined direction from the support bar 220 . Here, the extension piece 230 is formed with a through hole (not shown) to which a screw or bolt is fastened so as to be fixed to the inside of the tap changer under load.

The tip fixing lever 250 is integrally formed with the contact tip 210 and may be configured as a cap rotated along the outer surface of the screw rod (not shown) communicating with the support bar 220 and the support piece 240 . That is, the tip fixing lever 250 presses the support piece 240 with the rotation of the cap to fix the contact tip 210 .

The attachment jig 100 may include a main body 110 and a fastening tube 120 into which the fixing means 300 is inserted from the inside of the main body 110 .

The body 110 has a width corresponding to the set interval of the contact tips 210, and has an upper surface and both sides. In addition, the main body 110 may further include one or more receiving grooves 111 for accommodating the extension piece 230 .

The receiving groove 111 is one or more downwardly downward grooves from the upper surface of the attachment jig 100 , and accommodates the extension piece 230 of the contact assembly 200 . Here, the receiving groove 111 may be composed of an inclined surface 111a to match the fixing piece extending in an inclined direction, and a horizontal surface 111b extending horizontally from the inclined surface 111a.

The inclined surface 111a extends so as to be inclined from the end to the upper surface, and the inclination is deformable according to the shape of the extension piece 230 . Alternatively, the inclined surface 111a may further include a buffer plate (not shown) made of rubber, plastic, or fabric to reduce noise generated due to contact between metals.

The horizontal surface 111b may be formed as a plane extending horizontally from the inclined surface 111a. The shape of the receiving groove 111 allows the contact assembly 200 to be fastened in the opposite direction according to the shape of the extension piece 230 . For example, when the extension piece 230 is bent in an inclined direction, as shown in the drawing, the extension piece 230 may be drawn in in a contactable direction with the inclined surface 111a. Alternatively, when the extension piece 230 is vertically bent, the extension piece 230 may be drawn in in a contactable direction with the horizontal surface 111b.

The fastening tube 120 is a hollow tube extending in the transverse direction from the inside of the attachment jig 100 and the fixing means 300 communicates and is fastened. The fastening pipe 120 forms an inlet and an outlet open at both sides of the attachment jig 100 . Here, the fastening pipe 120 has a screw thread formed on its inner surface so that the fixing means 300 may be screwed therein.

The fixing means 300 is a bolt or screw extending in one direction and is connected to the fastening pipe 120 through the through-holes (reference numbers not shown) of the support pieces 240 respectively in close contact with both sides of the attachment jig 100 . The end is drawn out through a through hole (reference number not shown) of the support piece 240 that communicates and is in close contact with the opposite surface. That is, the fixing means 300 communicates with the attachment jig 100 and fixes the extension pieces 230 on both sides to be in close contact with the side surface of the attachment jig 100 .

Here, the attachment jig 100 is manufactured to have the same width as the set interval between the contact tips 210 . In addition, the attachment jig 100 includes an end groove 130 in which the support bar 220 is accommodated at the end so as to receive the support bar 220 and space the distance between the both contact tips 210 by a set distance. can This will be described with reference to FIGS. 4 and 5 .

Figure 4 is a perspective view showing an end of the attachment jig, Figure 5 is a view showing another embodiment of the attachment jig.

4 and 5, the end of the attachment jig 100 may include an end groove 130 in which the support bar 220 is accommodated inwardly. Here, the end groove 130 is installed in at least one of the front end and the rear end of the attachment jig 100 , and is directed inward to extend to the inclined surface 111a or the horizontal surface 111b of the receiving groove 111 , respectively.

Therefore, the support bar 220 is fastened to the attachment jig 100 in a state embedded in the end groove 130 .

In addition, the attachment jig 100 may further include a gap maintaining protrusion 140 protruding upward from the outer end of the end groove 130 to indicate the position of the contact tip 210 and prevent its movement.

For example, the contact tip 210 is fixed on one surface of the support bar 220 by the tip fixing lever 250 as described above. At this time, since the contact tips 210 are spaced apart by a set interval, they must be fixed so as to maintain the posture without departing from the designated position.

Therefore, the present invention constitutes the gap maintaining protrusion 140 protruding from the end to display the position between the contact tips 210 and block the movement.

The present invention includes the configuration as described above, and the effects achieved through the configuration as described above will be described below.

First, the operator inserts the support bar 220 into the end groove 130 and the extension piece 230 into the receiving groove 111, respectively. At this time, the bending plate 242 of the support piece 240 is in close contact with the side surface of the attachment jig 100 , and the horizontal plate 241 is in close contact with the opposite surface of the support bar 220 . And the operator fastens the fixing means 300 to the inside of the fastening pipe 120 through the through-holes (reference numbers not shown) of the support pieces 240 to fix the support pieces 240 on both sides.

Thereafter, the operator positions the contact tip 210 on one surface of the support bar 220 . At this time, the operator aligns the contact tip 210 to have a gap matching the width of the body 110 . Here, the width of the body is equal to the interval of the set contact tips.

And the operator fixes the contact tip 210 using the tip fixing lever 250 after positioning the contact tip 210 as above.

For example, in the prior art, the operator checks the gap using an eye or a tape measure and then fixes the contact tip 210 using the tip fixing lever 250, but in this process, the position or posture of the contact tip 210 may be deformed or the distance may be outside or close to the set distance.

However, in the present invention, the position of the contact tip 210 is specified using the body 110 manufactured to have the same width as the interval of the contact tips 210, and the contact tip 210 is fixed so as not to change at the corresponding position, 210) can be fixed, so that the interval between the contact tips 210 can be accurately maintained, thereby shortening the working time.

In addition, the present invention may include a change in the length of the support piece 240 and another embodiment that can respond to the through hole. This will be described with reference to FIGS. 6 and 7 .

6 is a plan view showing another embodiment of the attachment jig 100, FIG. 7 is a perspective view of FIG.

6 and 7, another embodiment of the jig for attaching the contact assembly of the on-load tap changer according to the present invention is a variable length portion 150 that slides inward from the opposite end of the attachment jig 100, and the length It further includes a sliding groove 160 for guiding the variable part 150 and an inlet 170 into which the fixing means 300 is introduced.

The variable length portion 150 includes a variable plate 151 extending in one direction to form a plane, an end protrusion 152 drawn out from the end of the variable plate 151 to support the end of the support piece 240 , and a variable A pair of rail grooves 153 protruding upward from one surface of the plate 151 and a rail communication hole 154 cut in the rail groove 153 through which the fixing means 300 communicates.

The variable plate 151 is slid inward from the ends of the pair of blocks 112 positioned on the outermost side of the blocks 112 of the body 110 to change the length thereof. To this end, the variable plate 151 extends in one direction to support the end protrusion 152 and the rail groove 153 .

The end protrusion 152 protrudes outward from the end of the variable plate 151 to support the end of the support piece 240 .

For example, the length of the support piece 240 may vary according to product-specific specifications. Therefore, another embodiment of the present invention is to implement the variable length portion 150, the length of which can be changed while sliding on the inner surface of the attachment jig 100 to correspond to the various lengths of the support piece 240 as described above.

Here, the end protrusion 152 supports the end of the support piece so that the fixing of the support piece to the support bar can be performed more easily.

Accordingly, the support piece 240 is in close contact with the side surface of the block 112 positioned on the outermost side of the body 110 and the end thereof is in close contact with the end protrusion 152 . At this time, the variable plate 151 may be varied while being drawn out or drawn into the inside of the attachment jig 100 according to the length of the support piece 240 .

The rail groove 153 is moved along the sliding groove 160 as a pair spaced apart from each other on the upper surface of the variable plate 151 .

The rail communication hole 154 extends in one direction along the rail groove 153 and is cut. Here, the rail communication port 154 may be adjusted in height and length to communicate with the inlet 170 .

The sliding groove 160 includes a first groove 161 extending in the transverse direction to guide the variable plate 151 , and a pair of extending upwardly from both sides of the first groove 161 to guide the rail groove 153 . of the second groove 162 . Here, the second grooves 162 communicate with the inlets 170 respectively formed on both sides of the block.

The inlet 170 is formed of a long hole formed on both sides of the main body 110 in which the sliding groove 160 is formed. For example, the main body 110 is composed of a block 112 that protrudes with the receiving groove 111 interposed therebetween, and the inlet 170 may be formed on both sides of each block 112 , respectively.

Here, the receiving groove 111 may be configured as a curved surface 111c inwardly facing a part or the whole of the horizontal surface 111b so as to guide the fixing means 300 drawn out from the inlet 170 .

The fixing means 300 connects the inlets 170 formed in the blocks 112 to fix the bending plates 242 of the support pieces 240 on both sides. At this time, the fixing means 300 is drawn out to the inlet 170 on the opposite side through the inlet 170 and the second groove 162 and the rail communication hole 154 formed on one surface of the block 112 .

Although FIG. 7 is illustrated as an embodiment including only the variable-length portion 150 , the present invention is not limited thereto and may be configured with only one of the fastening tube 120 or the variable-length portion 150 .

That is, another embodiment of the present invention includes a configuration that can be used universally regardless of the length of the support piece 240 and the position of the through hole.

As described above, the embodiments of the present invention can fix the contact assembly 200, so that the operator can very easily adjust the interval of the contact tip 210 to fix the contact point. The longitudinal length of the attachment jig 100 can be varied according to the length of the support piece 240 for supporting the tip 210, so that it can be used universally.

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom.

Therefore, it will be well understood that the present invention is not limited to the form recited in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

100: attachment jig 110: body
111: receiving groove 112: block
120: fastening pipe 130: end groove
140: spacing protrusion 150: variable length part
151: variable plate 152: end projection
153: rail groove 154: rail communication port
160: sliding groove 161: first groove
162: second home 170: inlet
200: contact assembly 210: contact tip
220: support bar 230: extension
240: support piece 250: tip fixing lever
300: fixing means

Claims (5)

In the contact assembly 200 having a pair of contact tips 210 spaced apart from each other and configured to conduct a load current in the on-load tap changer device, the contact tip 210 is fixed to maintain a set interval when assembling it a jig 100 for attachment; including,
The contact assembly 200 is
a support bar 220 for supporting a pair of contact tips 210 to be spaced apart from each other on one surface;
a support piece 240 bent to be in close contact with the opposite surface of the support bar 220 and the side surface of the attachment jig 100 , respectively; and
a tip fixing lever 250 for fixing the contact tip 210 on the opposite side of the support bar 220; including,
The attachment jig 100 is
The main body 110 having a width matching the set interval of the contact team, and having both sides to which the support piece 240 is in close contact;
a fastening pipe 120 extending in the transverse direction from the inside to communicate between both sides of the body 110; and
A fixing means 300 that communicates with the support piece 240 of the contact assembly 200 in close contact with the side and is fastened to the fastening pipe 120 to fix the support piece 240 ; A jig for attaching the contact assembly of the on-load tap-changer comprising a.
The method according to claim 1, The body 110 is
one or more receiving grooves 111 for accommodating one or more extension pieces 230 that are directed inward from the upper surface and extend from the support bar 220; including,
The receiving groove 111 is
an inclined surface 111a extending to be inclined of the body 110, and a horizontal surface 111b extending horizontally from an end of the inclined surface 111a; A jig for attaching the contact assembly of the on-load tap-changer comprising a.
The method according to claim 1, The attachment jig (100)
End groove 130 facing inward to receive the support bar 220 at the end of the body 110; A jig for attaching the contact assembly of the on-load tap-changer further comprising a.
The method according to claim 2, The attachment jig (100)
It protrudes upward from the tip of the end groove 130 to block the movement of the contact tip 210, and a gap maintaining protrusion 140 for indicating a position; A jig for attaching the contact assembly of the on-load tap-changer further comprising a.
The method according to claim 1, The fixing means 300 and the fastening pipe 120 are screw-coupled; A jig for attaching the contact assembly of the on-load tap-changer, characterized in that

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