KR20150140433A

KR20150140433A - ZERO LOAD TAP FOR middle or row VOLTAGE SUPERCONDUCTING TRANSFORMER

Info

Publication number: KR20150140433A
Application number: KR1020140068101A
Authority: KR
Inventors: 백오현
Original assignee: (주) 모노인더스트리
Priority date: 2014-06-05
Filing date: 2014-06-05
Publication date: 2015-12-16

Abstract

The present invention relates to a zero load tap changer for a middle and low voltage transformer for power distribution. The zero load tap changer comprises: a fixation support part which is an insulator having a size and a length; a plurality of fixation contacts which are separately arranged along the longitudinal direction of the fixation support part; a driving transfer part which receives a driving force to reciprocate in parallel with the fixation support part; movable contacts which are arranged in correspondence to the fixation contacts, mounted in the driving transfer part, and configured to come in contact with or disconnect contact from the fixation contacts in association with the reciprocation of the driving transfer part; and a movable support part which is arranged in parallel with the fixation support part and configured to support the reciprocation of the driving transfer part. The zero load tap changer easily moves an electrical connection spot of the tap in a variety of methods, improves stability and a contact feature of an operation due to movement, and prevents abrasion of a contact portion due to rotation.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a zero load taper for a low voltage transformer,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-load tap-changer for a low-voltage transformer during distribution, and more particularly, The present invention relates to a no-load under-tap air vent for a low-voltage transformer during distribution.

Transformers are devices that use mutual induction principles to further raise or lower an alternating voltage. Transformers use the principle of electromagnetic induction to raise or lower a particular voltage level to a higher or lower voltage level.

Transformers have specific connections that are referred to as taps in the transformer industry.

The transformer tap is an electrical connection point that is positioned along either the main winding and / or the secondary windings and allows the number of turns to be selected.

The selection of the used tab is made through a tap changer mechanism.

The tap change mechanism selects a turn at the secondary winding coil to be connected to the load circuit, thereby adjusting the output voltage by varying the ratio of turns at the transformer.

(Hereinafter referred to as "prior art 1") of Patent Application No. 10-1348334, which is filed by the applicant for the purpose of the present invention, from the viewpoint of the above, and "Patent No. 10-2013-0086437" Quot; 30kv no-load taps and ventilation for distribution "(hereinafter referred to as " Prior Art 2 ").

The prior art 1 includes a support plate 510, a fixed contact 520 formed at a predetermined interval in the circumferential direction on one surface of the support plate 510, And a rotary contact 530 which is rotated at the center of the fixed contact 520 and is connected to each of the fixed contacts 520.

In the prior art 2, the gear box 400 having the movable rack gear 410 and the pinion gear 420 moves the movable contact 300.

However, in the prior art 1, when the rotary contact 530 is rotated, there is a problem that abrasion occurs severely, and there is a fear that a safety accident may occur due to an unnecessary contact due to the movement of the rotary contact 530.

In the prior art 2, there is a problem that the stability of the movable contact due to the movement of the gear box 400 and the contact property with the fixed contact are degraded.

Patent No. 10-1348334 Patent Application No. 10-2013-0086437

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to improve the stability of the operation and the contactability of the tap while moving the electrical connection point easily by various methods, Load tap changer for a low-voltage transformer during distribution to prevent abrasion.

According to an aspect of the present invention, there is provided a semiconductor device comprising: a stationary support portion, which is an insulator having a predetermined area and length; A fixed contact disposed at a plurality of locations along the longitudinal direction of the fixed support; A drive transmission unit that receives driving force and reciprocates parallel to the fixed support unit; A moving contact which is disposed to correspond to the fixed contact and is mounted on the drive transmitting portion and is in contact with or released from the fixed contact in association with reciprocation of the drive transmitting portion; And a moving support portion disposed parallel to the fixed support portion and supporting a reciprocation of the drive transmission portion. The present invention can provide a no-load tap changer for a low-voltage transformer during distribution.

Here, the drive transmission portion includes a screw rod disposed in parallel with the fixed support portion, which is supported by the movable support portion in the forward and reverse directions, and is screwed to the screw rod, And at least one mover reciprocating along the longitudinal direction of the screw rod in association with the screw rod, wherein the movable contact is mounted on the mover.

At this time, the moving support portion includes a bus bar disposed parallel to the fixed support portion and the screw rod, a support portion extending from one end of the bus bar and coupled to the fixed support portion, and rotatably supporting one end of the screw rod, And the like.

The movable support portion may include a bus bar disposed parallel to the longitudinal direction of the fixed support portion having a plurality of fixed contacts protruded along both side edges of the movable support portion, And the moving contact is interlocked with the driving transmitting portion which reciprocates along the longitudinal direction of the bus bar.

The moving support portion may include a bus bar disposed in parallel between the stationary support portion and the adjacent stationary support portion, the stationary support portion and the neighboring stationary support portion are plurally arranged so as to protrude along one side edge of the stationary support portion and the adjacent stationary support portion And the moving contact is reciprocated in correspondence with the plurality of fixed contacts, and the moving contact is interlocked with the driving transmitting part which reciprocates along the longitudinal direction of the bus bar.

According to another aspect of the present invention, there is provided a semiconductor device comprising: a stationary support portion which is an insulator having a predetermined area and length; A plurality of fixed contacts radially spaced apart on the fixed support; A drive transmission unit that receives the driving force and rotates in the forward and reverse directions on the fixed support unit; A moving contact disposed in correspondence with the stationary contact and mounted on the drive transmitting portion and being in contact with or disengaged from the stationary contact in conjunction with forward and reverse rotation of the drive transmitting portion; And a movement guide unit provided on the fixed support unit and guiding rotation of the drive transmission unit. The present invention also provides a no-load tap changer for a low-voltage transformer during distribution.

Here, the drive transmission unit may include a rotation shaft provided at the center of the fixed support unit to receive forward driving force and forward and reverse rotation, a rotation bar coupled to an end of the rotation shaft and rotated at both ends around the rotation axis, Wherein both ends of the rotary bar are disposed inside a plurality of fixed contacts radially spaced apart from each other on the fixed support part, the movable contacts are mounted on the rotary bar, respectively, and the movement guide part is provided on the fixed support part and the rotary bar .

At this time, the movement guide portion is formed in the shape of a closed curve on the upper surface of the fixed support portion, is disposed inside the plurality of fixed contact points, the center of the closed curve is positioned at the center of the fixed support portion, And a guide pin which is coupled to the drive transmission portion and is coupled to the drive transmission portion so that the guide pin can exert an elastic repulsive force toward the outside of the drive transmission portion And a spring for resiliently supporting the spring.

The movement guide portion is formed in a closed curve shape on the upper surface of the fixed support portion and is disposed inside the plurality of fixed contact points. The center of the closed curve is positioned at the center of the fixed support portion, A guide pin that is reciprocally coupled to a guide slot formed along the longitudinal direction of both sides so as to be reciprocally movable and moves along a forming direction of the guide rail; And a spring elastically supporting the spring in a direction to push the spring toward both ends.

The closed curve includes a first guide rail portion having a circular arc shape convex toward a position where the plurality of fixed contact points are disposed and a second guide rail portion parallel to a position corresponding to a gap portion between one of the plurality of fixed contacts and a neighboring fixed contact And a second guide rail portion having a circular arc shape convexed toward a center portion of the fixed support portion so that the first guide rail portion and the second guide rail portion are sequentially So that the closed curve is formed.

According to the present invention having the above-described structure, the driving transmitting portion moves the moving contact in parallel with the fixed supporting portion to create a contact state in the fixed contact, and the movable supporting portion disposed parallel to the fixed supporting portion, .

According to the present invention, the driving transmitting portion rotating in the fixed supporting portion rotates the movable contact to thereby establish a contact state with the fixed contact, and the movement guide portion disposed inside the fixed supporting portion can improve the stability of operation and contactability As well as wear of the contact portion due to rotation can be prevented.

1 is a partial plan view showing a main portion of a no-load underground tap-changer for a low-voltage transformer during distribution according to an embodiment of the present invention;
FIG. 2 is a partial side elevation view showing a main portion of a no-load tapped air vent for a low-voltage transformer during distribution according to an embodiment of the present invention.
3 is a partial plan view showing an embodiment of the arrangement of the stationary supporter and the movable supporter, which are the main parts of the no-load under-tap air vent for the low-voltage transformer during the distribution according to another embodiment of the present invention.
4 is a partial plan view showing a main part of a no-load tapped air vent for a low-voltage transformer during distribution according to another embodiment of the present invention

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments described herein but may be embodied in other forms.

Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

In the drawings, the thicknesses of layers and regions are exaggerated for clarity.

Terms such as top, bottom, top, bottom, or top, bottom, etc. are used to distinguish relative positions in components.

For example, in the case of naming the upper part of the drawing as upper part and the lower part as lower part in the drawings for convenience, the upper part may be named lower part and the lower part may be named upper part without departing from the scope of right of the present invention .

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, 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 this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

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

FIG. 1 is a plan view showing a part of a non-load tap-changer for a low-voltage transformer during distribution according to an embodiment of the present invention. FIG. 2 is a plan view of a non- And Fig.

As shown in the drawing, the fixed support 200 is provided in the fixed support 100, and the drive transmission unit 300 moves the movable contact 400 while the movable support 500 moves the drive transmission unit 300 It can be understood that the structure supports the movement.

The stationary support 100 provides a space and an area in which the stationary contact 200 to be described later is disposed with an insulator having a certain area and length.

The stationary contacts 200 are spaced apart from each other along the longitudinal direction of the stationary support 100 and are used to maintain electrical contact with a movable contact 300 to be described later.

The drive transmission unit 300 receives drive force from a drive source (not shown) and reciprocates parallel to the fixed support unit 100. The drive transmission unit 300 is operated by receiving driving force for moving the movable contact 400, which will be described later.

The movable contact 400 is disposed to correspond to the fixed contact 200 and mounted on the drive transmission unit 300 and is in contact with or released from the stationary contact 200 in conjunction with reciprocation of the drive transmission unit 300.

The movable supporting part 500 is disposed parallel to the fixed supporting part 100 to support the reciprocation of the driving transmitting part 300.

Therefore, the present invention can improve the stability of operation and the contactability by the moving support part 500 arranged in parallel with the fixed supporting part 100.

The present invention can be applied to the embodiment described above, and it goes without saying that the following embodiments are also applicable.

1 and 2, the fixed supporting part 100 is a fixed insulating tab bar 110 having a predetermined length in one direction.

The drive transmission unit 300 includes a screw rod 310 disposed parallel to the fixed support 100 and supported by the movable support 500 in the forward and reverse directions by receiving the driving force, And at least one mover 320 that reciprocates along the lengthwise direction of the screw rod 310 in conjunction with the forward and reverse rotation of the screw rod 310. [

Here, the movable contacts 400 are mounted on the mover 320, respectively.

The movable support 500 includes a bus bar 510 disposed parallel to the fixed support 100 and the screw rod 310 and a bus bar 510 extending from one end of the bus bar 510 to support the fixed support 100. [ And the support piece 520 rotatably supports the one end of the screw rod 310. In this case,

3 (a), the bus bar 510 is arranged parallel to the longitudinal direction of the fixed support portion 100, which is disposed so as to protrude along the side edges of the plurality of fixed contacts 200, The movable contact 400 is interlocked with the drive transmission part 300 which reciprocates along the longitudinal direction of the bus bar 510. [

In other words, this mechanism is easier to transmit the driving force toward the driving transmission portion 300 side than the prior art 2, and the positioning according to the movement of the moving contact 400 can be more accurately performed.

3 (b), the bus bar 510 is disposed in parallel between the stationary support 100 and the stationary support 100 adjacent to the stationary support 100, And a plurality of the movable contacts 400 protrude along one side edge of the fixed support 100. The movable contacts 400 reciprocate correspondingly to the plurality of fixed contacts 200. [

The movable contact 400 is interlocked with the drive transmission unit 300, that is, the mover 320, which reciprocates along the longitudinal direction of the bus bar 510.

It is needless to say that the present invention can be applied to the embodiment described above, and it is also possible to apply the embodiment in which the contact is made by the moving contact 400 rotating with respect to the fixed contact 200 as shown in FIG.

That is, the fixed support part 100 is a fixed plate 120 having a constant width and length and a fixed area, and the fixed contacts 200 are disposed on the fixed support part 100 so as to be radially spaced apart from each other.

The drive transmitting portion 300 receives the driving force and rotates in the forward and reverse directions on the fixed support portion 100.

The movable contact 400 is disposed to correspond to the fixed contact 200 and is mounted on the drive transmitting portion 300. The movable contact 400 is brought into contact with or disengaged from the fixed contact 200 in conjunction with forward and reverse rotation of the drive transmitting portion 300, .

The movement guide unit 600 is provided on the stationary support unit 100 to guide the rotation of the drive transmission unit 300.

The drive transmission unit 300 includes a rotation shaft 330 disposed at the center of the stationary support unit 100 and receiving forward driving force to rotate in the forward and reverse directions and coupled to the end of the rotation shaft 330, And a rotating bar 340 having both ends rotated.

At this time, both ends of the rotating bar 340 are disposed inside the plurality of stationary contacts 200 disposed radially apart on the stationary support 100.

It can be seen that the moving contact 400 is mounted on the rotating bar 340 and the moving guide 600 is provided on the fixed supporting part 100 and the rotating bar 340.

The movement guide unit 600 can recognize that the guide pin 620 is moved along the guide rail 610 while the guide pin 620 is elastically supported by the spring 630.

The guide rail 610 is formed in the shape of a closed curve on the upper surface of the fixed support 100 and is disposed inside the plurality of fixed contacts 200 and the center of the closed curve is disposed at the center of the fixed support 100.

The guide pin 620 is coupled to the drive transmission unit 300 and is reciprocally movable along the forming direction of the guide rail 610 and at the same time along the forming direction of the drive transmitting unit 300.

More specifically, the guide pin 620 is reciprocally coupled to a guide slot 341 formed along the longitudinal direction of both sides of the rotation bar 340, and moves along the forming direction of the guide rail 610.

The spring 630 is coupled to the drive transmission portion 300 so that the guide pin 620 is elastically supported to exert an elastic repulsive force toward the outside of the drive transmission portion 300.

More specifically, the spring 630 is embedded in the guide slot 341 so that the guide pin 620 is elastically supported in a direction of pushing the guide pin 620 from the rotating shaft 330 side toward both ends of the rotating bar 340.

The above-mentioned closed curve is formed by sequentially repeating the first guide rail part 611 and the second guide rail part 612.

The first guide rail part 611 is formed into a convex circular arc shape toward a position where the plurality of stationary contacts 200 are disposed.

The second guide rail part 612 is formed parallel to a position corresponding to the space between one of the plurality of fixed contacts 200 and the neighboring fixed contacts 200, Both ends are connected to each other and formed into a convex circular arc shape toward the central portion of the fixed support portion 100. [

The guide pin 620 moving along the shape of the closed curve of the guide rail 610 is resiliently supported by the spring 630 so that the movable contact 400, It is possible to minimize the abrasion between the fixed contacts 200 and the fixed contacts 200 and to prevent a safety accident due to unnecessary contacts of the movable contact 400.

As described above, according to the present invention, it is possible to easily move the electrical connection points of the tabs by various methods, and to improve the stability of operation and contactability according to the movement, and to prevent wear of contact points due to rotation It is understood that the basic technical idea is to provide a no-load tap selector for a medium-low-voltage transformer.

It will be apparent to those skilled in the art that many other modifications and applications are possible within the scope of the basic technical idea of the present invention.

100 ... fixed support
110 ... fixed insulation tap bar
120 ... fixed plate
200 ... fixed contact
300 ... drive transmission portion
310 ... Screw rods
320 ... mover
330 ... rotation shaft
340 ... Rotary bar
341 ... guide slot
400 ... moving contact
500 ... < / RTI &
510 ... bus bar
520:
600 ... movement guide
610 ... guide rail
611 ... first guide rail part
612 ... 2nd guide rail part
620 ... guide pin
630 ... spring

Claims

A fixed support portion which is an insulator having a constant area and a predetermined length;
A fixed contact disposed at a plurality of locations along the longitudinal direction of the fixed support;
A drive transmission unit that receives driving force and reciprocates parallel to the fixed support unit;
A moving contact which is disposed to correspond to the fixed contact and is mounted on the drive transmitting portion and is in contact with or released from the fixed contact in association with reciprocation of the drive transmitting portion; And
And a moving support portion disposed parallel to the fixed support portion and supporting a reciprocation of the drive transmission portion.

The method according to claim 1,
The drive-
A screw rod which is disposed in parallel with the fixed support portion and is supported by the movable support portion,
And at least one shifter screwed to the screw rod and reciprocating along the longitudinal direction of the screw rod in conjunction with forward and reverse rotation of the screw rod,
And wherein the moving contact is mounted to the mover, respectively.

The method of claim 2,
The moving support portion
A bus bar disposed parallel to the fixed support and the screw rod,
And a support piece extending from one end of the bus bar and coupled to the stationary support part and rotatably supporting one end of the screw rod.

The method according to claim 1,
The moving support portion
And a bus bar disposed parallel to a longitudinal direction of the fixed support portion, the fixed portion having a plurality of fixed contacts projected along both side edges thereof,
Wherein the movable contact reciprocates in correspondence with the plurality of fixed contacts,
Wherein the movable contact is interlocked with the drive transmission portion reciprocating along the longitudinal direction of the bus bar.

The method according to claim 1,
The moving support portion
And a bus bar disposed in parallel between the stationary support and the adjacent stationary support,
The plurality of fixed contacts are disposed so as to protrude along one side edge of the fixed support portion and the adjacent fixed support portion,
Wherein the movable contact reciprocates in correspondence with the plurality of fixed contacts,
Wherein the movable contact is interlocked with the drive transmission portion reciprocating along the longitudinal direction of the bus bar.

A fixed support portion which is an insulator having a constant area and a predetermined length;
A plurality of fixed contacts radially spaced apart on the fixed support;
A drive transmission unit that receives the driving force and rotates in the forward and reverse directions on the fixed support unit;
A moving contact disposed in correspondence with the stationary contact and mounted on the drive transmitting portion and being in contact with or disengaged from the stationary contact in conjunction with forward and reverse rotation of the drive transmitting portion; And
And a movement guide portion provided on the fixed support portion and guiding rotation of the drive transmission portion.

The method of claim 6,
Wherein the drive transmission portion includes:
A rotation shaft provided at the center of the fixed support portion to receive a driving force to rotate forward and reverse,
And a rotating bar coupled to an end of the rotating shaft and rotated at both ends about the rotating shaft,
Both ends of the rotary bar are disposed inside a plurality of stationary contacts disposed radially spaced on the stationary support,
The moving contact is mounted on the rotating bar,
Wherein the movement guide portion is provided on the fixed support portion and the rotary bar.

The method of claim 6,
Wherein,
A guide rail formed in the shape of a closed curve on the upper surface of the fixed support portion and disposed inside the plurality of fixed contact points, the center of the closed curve being disposed at the center of the fixed support portion,
A guide pin coupled to the drive transmission unit and reciprocally movable along the forming direction of the guide rail and simultaneously along the forming direction of the drive transmission unit;
And a spring which is coupled to the drive transmission portion and resiliently supports the guide pin so as to exert an elastic repulsive force toward an outer side of the drive transmission portion.

The method of claim 7,
Wherein,
A guide rail formed in the shape of a closed curve on the upper surface of the fixed support portion and disposed inside the plurality of fixed contact points, the center of the closed curve being disposed at the center of the fixed support portion,
Guide pins that are reciprocally coupled to guide slots formed along the longitudinal direction of both sides of the rotating bar and move along the forming direction of the guide rails,
And a spring embedded in the guide slot and elastically supporting the guide pin in a direction of pushing the guide pin from the rotation axis side to both ends of the rotation bar.

The method according to claim 8 and 9,
The closed curve
A first guide rail portion having a circular arc shape convex toward a position where the plurality of stationary contact points are arranged,
The first guide rails are formed parallel to a position corresponding to a gap between one of the plurality of fixed contacts and the neighboring fixed contacts, and both ends of each of the first guide rails are mutually connected to form a convex circular arc And a second guide rail portion,
Wherein the first guide rail portion and the second guide rail portion are sequentially repeated to form the closed curve.