KR920007518Y1

KR920007518Y1 - Terminal architecture for transformers

Info

Publication number: KR920007518Y1
Application number: KR2019900016962U
Authority: KR
Inventors: 김봉주
Original assignee: 평일산업 주식회사; 김봉주
Priority date: 1990-11-06
Filing date: 1990-11-06
Publication date: 1992-10-15
Also published as: KR920010252U

Abstract

내용 없음.No content.

Description

Secondary terminal structure of transformer

제1도는 본 고안의 구성을 보여주기 위한 일부절결 분해사시도.Figure 1 is a partially exploded perspective view showing the configuration of the present invention.

제2도는 본 고안의 구성요소로서 터미널 단자를 도시한 사시도.2 is a perspective view showing a terminal terminal as a component of the present invention.

제3도는 제2도의 다른 실시예를 보여주는 사시도.3 is a perspective view showing another embodiment of FIG.

제4도는 본 고안의 구성요소로서 부싱을 도시한 일부절결된 사시도.4 is a partially broken perspective view of the bushing as a component of the present invention.

제5도의 (a)는 제1도의 A-A선 단면도, (b)는 제1도의 B-B선 단면도.FIG. 5A is a cross-sectional view taken along the line A-A of FIG. 1, and (b) is a cross-sectional view taken along the line B-B of FIG.

제6도는 본 고안이 변압기의 설치된 상태로서 부분발췌 일부절결된 상태도.Figure 6 is a state in which the present invention is partially cut out part of the installed state of the transformer.

제7도는 종래도로서 변압기에 설치된 2차측 터미널 장치의 상태도.7 is a state diagram of a secondary terminal device installed in a transformer as a conventional diagram.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 부싱 2 : 터미널1: bushing 2: terminal

3 : 어댑터 4 : 절연튜브3: adapter 4: insulated tube

11 : 압압덮개 12 : 내측돌부11: press cover 12: inner protrusion

13 : 외측돌부 14, 22 : 플랜지부13: outer protrusion 14, 22: flange

14' : 실링괘지홈 14a : 실링14 ': sealing groove groove 14a: sealing

24 : 접속부 28 : 절연수지24: connection part 28: insulating resin

25, 26 : 나공25, 26: Nagong

본 고안은 변압기의 2차측 터미널구조에 관한 것으로서, 특히 지상설치형 변압기의 2차측 선로인출을 위한 터미널 장치에 있어서 절연 및 기밀유지를 향상시킬 수 있도록된 변압기의 2차측 터미널 구조에 관한 것이다.The present invention relates to the secondary terminal structure of the transformer, and more particularly to the secondary terminal structure of the transformer to improve the insulation and airtight in the terminal device for the secondary line pull-out of the ground-mounted transformer.

종래에 있어서 지상설치형 변압기(일명 PAD MOUNTED 변압기)의 1차측 터미널 장치는 비교적 고압배전 전압이므로 인입단자의 외부도 전기적인 절연상태를 유지하도록 하고있으나 2차측의 강하된 전압은 터미널의 사용빈도가 1차측에 비하여 잦은 반면에 전기적인 절연이 이루어지지 않고있다. 대표적인 예로서 제7도에 종래의 터미널의 지상설치형 변압기(이하 P, M 변압기라 칭함)에 설치된 상태를 참조하여 살펴보면, 구리재의 판재형 터미널(50)의 일측축상에 자기재의 부싱(51)과 가스켓(53), P. M 변압기 프레임(P)을 축설하여 가스켓(54)과 자기재부싱(52)을 끼워 볼트(55)로서 가압고정하는 구조로서 다수의 인출단자(56)를 체결할 수 있도록된 터미널(50)은 단자(56)와의 전기적인 접속을 위하여 외표면에 나선상태를 유지하므로서 이 노출된 도체로 인하여 안전사고의 문제점을 근본적으로 가지고 있는 실정인 것이다.Conventionally, since the primary terminal device of a ground-mounted transformer (aka PAD MOUNTED transformer) is a relatively high voltage distribution voltage, the outside of the inlet terminal maintains electrical insulation, but the voltage dropped on the secondary side is 1 It is more frequent than the vehicle side, but there is no electrical insulation. As a representative example, referring to a state installed in a ground-mounted transformer (hereinafter, referred to as P and M transformer) of a conventional terminal in FIG. 7, the bushing 51 of the magnetic material and the one side shaft of the plate-type terminal 50 made of copper and Gasket 53, P. M transformer frame (P) is built up, and the gasket 54 and the magnetic bushing 52 is fitted into the bolt (55) to secure a plurality of lead terminals 56 can be fastened. Since the terminal 50 maintains a spiral state on the outer surface for electrical connection with the terminal 56, the exposed conductor is fundamentally having a problem of a safety accident.

또한 종래의 P. M 변압기에 구현된 터미널 구조는 중심공을 통하여 가스켓을 개재한 자기재를 압압결착하는 형태로서 그 체결력이 구조적으로 완전하지 못하여(접촉원주면의 불균일등) P. M변압기내의 변압기 유가 외부로 누설되거나 또는 외부습기가 내부로 흡수되는등 변압기의 절연 및 냉각에 바람직하지 못한 영향을 줄 수 있었다.In addition, the terminal structure implemented in the conventional P. M transformer is press-bonded to a magnetic material through a gasket through a central hole, and its clamping force is not structurally perfect (nonuniformity of the contact circumferential surface). Unnecessary effects on the insulation and cooling of the transformer could be caused by leakage of the transformer oil or absorption of external moisture into the transformer.

본 고안은 상술된 바와같은 종래기술이 갖는 제반 문제점을 해소하고자 안출된 것으로서 다음과 같은 목적을 갖는다.The present invention has been made to solve the problems of the prior art as described above has the following object.

첫째, 본 고안은 P. M변압기의 2차측 터미널에 외부단자를 접속하거나 해체할때 필수접속부를 제외한 터미널 외표면을 절연수지재로서 몰딩하여 전기적으로 안전한 터미널구조를 제공하는데 있다.First, the present invention provides an electrically safe terminal structure by molding the outer surface of the P. M transformer as an insulating resin except for the necessary connection part when connecting or disassembling the external terminal to the secondary terminal of the P. M transformer.

둘째, 본 고안은 P. M변압기의 2차측 터미널의 부싱을 변압기 외측부에서 조립설치가 가능하도록하고 완전한 기밀유지가 될 수 있는 부싱을 갖는 터미널구조를 제공하는데 있다.Secondly, the present invention provides a terminal structure having a bushing that allows the bushing of the secondary terminal of the P. M transformer to be assembled and installed at the outside of the transformer and can be completely airtight.

셋째, 본 고안은 결속어댑터 및 접촉부 절연튜브를 구성하여 작업시 부싱에 가하여지는 바람직하지 아니한 외력을 배제하여 전기적인 양호한 접속을 실현하는 동시에 접촉부 절연튜브로 완전한 외부절연이 이루어질수 있도록된 터미널구조를 제공하는데 있다.Thirdly, the present invention provides a terminal structure that constitutes a binding adapter and a contact insulation tube, thereby realizing good electrical connection by eliminating undesirable external force applied to the bushing during operation, and at the same time, providing complete external insulation with the contact insulation tube. It is.

넷째, 본 고안은 P. M변압기의 2차측 터미널을 설치, 보수함에 있어서 작업성이 우수한 터미널 구조를 제공하는데 있다.Fourth, the present invention is to provide a terminal structure excellent in workability in installing and repairing the secondary terminal of the P. M transformer.

이하 상술된 바와같은 본 고안의 목적을 구현하고자 이루어지는 본 고안의 기술구성을 첨부도면을 참조하여 살펴보고자 한다.Hereinafter will be described with reference to the accompanying drawings the technical configuration of the present invention to achieve the object of the present invention as described above.

제1도 내지 제5도에 있어서, 본 고안은 대별하여 2차측 전원을 인출하는 부싱(1), 부싱에 밀착력과 결속력을 제공하는 압압커버(11), 외부부하와 접속되는 터미널(2), 상기 부싱에 나사결합되고 터미널에 삽입설치되는 어댑터(3), 부싱과 터미널간의 접촉면에 끼워지는 절연튜브(4)로서 결합구성되는 구조를 갖는다.1 to 5, the present invention is divided into a bushing (1) for drawing the secondary side power supply roughly, a pressure cover (11) for providing an adhesion and binding force to the bushing, a terminal (2) connected to an external load, Adapter 3 is screwed to the bushing and inserted into the terminal, it has a structure configured as an insulating tube (4) fitted to the contact surface between the bushing and the terminal.

각 구성요소를 좀더 상세하게 살펴본다.Look at each component in more detail.

후술될 터미널과 P. M변압기 사이에 설치되어져 전기적, 기계적인 연결수단이 되는 부싱(1)은 내, 외측돌부(12, 13) 사이에 실링(14a)을 삽설할 수 있도록 실링괘지홈(14')이 형성된 플랜지부(14)가 절연체로서 일체형성되고 이 중심부를 관통하며 외주에 나선이 형성된 중심축(15)은 상기 돌부(12,13)에 비하여 길게 형성되며 이 외측돌부(13)에 외접설치되는 삼각형태의 압압덮개(11)는 중심공(16)과 외주꼭지점상에 체결공(17)을 형성하여 이루며 다수의 부하케이블과 접속뢸 수 있도록된 터미널(2)은 도전재의 금속재로서 체결공(21)이 중심부에 형성된 플랜지부(22)와 일체로 단차를 이루며 수평선상으로 연장형성된 기부(23), 이 기부(23)에 수직으로 형성되며 상호 적정거리를 유지하는 다수의 반원형 원추돌기의 접속부(24)로 이루되, 상기 체결공(21)에 직교 관통된 체결용 나공(25)과 케이블단자 접속용 나공(26)이 상기 접속부(24)상에 관통형성되는 동시에 접속부를 제외한 표면을 적절하고 동일한 두께의 절연수지(28)로서 몰딩하여 이루어지는 터미널(2)과 상기 부싱(1)의 중심축(15)에 나사결합되며 터미널(2)의 체결공(21)에 함몰되는 상태로 결합되는 평면(31)을 갖는 어댑터(3)와 다수의 돌기환(41)이 내향돌설된 절연튜브(4)로서 결합구성되는 것이다.The bushing 1, which is installed between the terminal to be described later and the P. M transformer and serves as an electrical and mechanical connection means, has a sealing recess groove 14 so that the sealing 14a can be inserted between the inner and outer protrusions 12 and 13. ') Formed flange portion 14 is integrally formed as an insulator, penetrates the central portion thereof, and a central axis 15 having a spiral formed on the outer circumference thereof is formed longer than the protrusions 12 and 13 and formed on the outer protrusion 13. The triangular press cover 11, which is installed externally, is formed by forming a fastening hole 17 on the center hole 16 and the outer circumferential vertex, and the terminal 2 which can be connected to a plurality of load cables is a metal material of a conductive material. The base 23 is formed integrally with the flange portion 22 formed in the center of the fastening hole 21 and extends on a horizontal line, and is formed perpendicular to the base 23 and has a plurality of semicircular cones that maintain a proper distance to each other. It consists of a connecting portion 24 of the projection, but perpendicularly penetrated through the fastening hole 21 Terminal 2, wherein the fastening holes 25 and the cable terminal connection holes 26 are formed through the connection part 24, and the surface except the connection part is molded as an insulating resin 28 having an appropriate and equal thickness. And adapter 3 and a plurality of projection ring 41 is screwed to the central axis 15 of the bushing (1) having a plane (31) coupled in a state recessed in the fastening hole 21 of the terminal (2) ) Is configured to be combined as an inwardly insulated tube (4).

여기서 터미널(2)은 기부(23, 23')가 이격부(23a)로 이격설치되어 다수의 접속부(24)를 형성할 수도 있으며 이는 수평선상에 다수의 접속부를 구성하는 것에 비하여 공간효율을 높일 수 있는 구성으로 여타 구성은 동일하다.In the terminal 2, the bases 23 and 23 ′ may be spaced apart by the spacing portions 23a to form a plurality of connecting portions 24, which increases space efficiency compared to forming a plurality of connecting portions on the horizontal line. The other configurations are the same as possible.

미설명부호 (27)은 탭보울트, (28)은 절연튜브이며 (29)는 케이블을 도시한 것이다.Reference numeral 27 is a tab bolt, 28 is an insulating tube, and 29 is a cable.

다음으로는 상술된 바와같이 구성된 본 고안의 효과를 좀더 상세하게 살펴보기로 한다.Next, the effects of the present invention configured as described above will be described in more detail.

먼저 본 고안의 각 구성요소들이 결합되어 이루어지는 PM변압기의 설치상태를 도시한 제6도를 참조하여 살펴보기로 한다. PM변압기의 판넬(P)상에 형성된 부싱설치용 통공에 절연체인 에폭시수지(epoxy resin)재의 부싱(1)의 내측돌부(12)를 외측으로부터 삽입설치하되 플랜지부(14)의 실링괘지홈(14')에는 통상의 실링(14a)을 삽입설치하고, 상기 부싱(1)의 외측돌부(13)의 외주로 접하는 중심공(16)이 형성된 압압덮개(11)를 씌워, 이 압압덮개의 외주꼭지점상에 형성된 체결공(17)을 P. M변압기판넬(P)상의 체결용 탭보울트에 일치결합되도록 한다. 이후 상기 탭보울트에 너트로서 체결하게 되면 접속점(X)와 실링점(Y)에 견고한 압압력을 가하게 되어 부싱(1)의 견고한 결합과 필요한 기밀유지가 완전하게 이루어질 수 있게된다.First, it will be described with reference to Figure 6 showing the installation state of the PM transformer is combined with each component of the present invention. Insert the inner protrusions 12 of the bushing 1 of the epoxy resin material, which is an insulator, from the outside in the bushing installation hole formed on the panel P of the PM transformer from the outside. ') Is fitted with a pressing cover (11) having an ordinary seal (14a) inserted therein and a central hole (16) formed in contact with the outer circumference of the outer protrusion (13) of the bushing (1). The fastening holes 17 formed thereon are matched to the tab bolts for fastening on the P. M transformer panel P. Then, when the nut is fastened to the tab bolt, a firm pressing force is applied to the connection point (X) and the sealing point (Y) so that the tight coupling of the bushing (1) and necessary airtightness can be achieved completely.

이와같이 설치된 부싱(1)에 부하케이블 접속용 터미널(2)을 결합하되 상기 2부재가 결합되는 접속면을 절연하고자 일측내주연에 복수의 돌기환(41)이 돌설된 원통형 절연튜브(4)를 부싱의 외측돌부(13)에 끼워넣는 한편, 이 부싱의 중심축(15)에 볼트접지면인 평면(31)이 형성된 어댑터(3)를 나사결합하고 이 어댑터의 외측으로 끼워지는 체결공(21)을 갖는 터미널(2)을 삽입설치한후 체결용 탭보울트(27)로서 나공(25)을 통하여 체결하게 되면 상기 부싱(1)은 어댑터(3)를 통하여 터미널(2)과 전기적, 기계적으로 확고하게 결합되게 된다. 이후 절연튜브(4)의 적절한 위치조절로 2차측 부싱은 완전한 절연유지가 실현된다.Couple the load cable connecting terminal (2) to the bushing (1) installed in this way, but the cylindrical insulating tube (4) in which a plurality of projection rings (41) protruding on one side inner circumference to insulate the connection surface to which the two members are coupled The fastening hole 21 which is inserted into the outer protrusion 13 of the bushing while screwing the adapter 3 having a flat surface 31, which is a bolt contact surface, on the central axis 15 of the bushing, is fitted to the outside of the adapter 21. After inserting and installing the terminal (2) having a fastening through the hole (25) as a fastening tap bolt 27, the bushing (1) is electrically and mechanically connected to the terminal (2) through the adapter (3) Firmly combined. The secondary bushing is then fully maintained in insulation by proper positioning of the insulating tube 4.

이상과 같은 과정으로 결합된 본 고안에 부하케이블(29)을 접속하고자하면 통상의 절연튜브(28)를 갖는 케이블 선단의 단자를 접속부(24)의 나공(26)에 보울링하여 결합하면 된다.If you want to connect the load cable 29 to the present invention coupled in the above-described process, the terminal of the cable tip having a conventional insulating tube 28 is bowling and coupled to the hole 26 of the connection portion 24.

기서술된 바와같은 본 고안인 변압기 2차측 터미널구조는 설치작업이 변압기 외측에서 모두 이루어질 수 있도록하여 높은 생산성을 제공하며 에폭시 수지재의 밀착력과 실링의 기밀유지로 장기간 경과되어도 부식 및 크랙이 발생치 않아 변압기의 수명이 증대되며, 유지보수가 간편한 동시에 터미널 표면의 완전한 절연을 실현함으로서 주상변압기에 비하여 불특정인이 쉽게 접근할 수 있는 지상에 설치되는 변압기 임을 감안할때 보다 안전성이 향상된 우수한 고안이라 하겠다.As described above, the transformer secondary terminal structure of the present invention provides high productivity by allowing the installation work to be performed outside of the transformer, and does not cause corrosion and cracks even after a long time due to the tight adhesion of the epoxy resin and the airtightness of the seal. The safety of the transformer is increased, and the maintenance is easy, and the complete insulation of the terminal surface is realized, so that the transformer is installed on the ground which can be easily accessed by unspecified people compared with the columnar transformer.

Claims

In forming a secondary terminal structure of a conventional PM transformer in which an insulating bushing and a terminal are combined, a bushing (1) for drawing the secondary side power supply, a pressure cover (11) for providing adhesion and binding force to the bushing, and an external portion A terminal (2) connected to the load, an adapter (3) screwed into the bushing and inserted into the terminal, and an insulating tube (4) fitted to the contact surface between the bushing and the terminal, wherein the bushing (1) is internal and external The central shaft 15 having a spiral portion formed therein is formed integrally with a flange portion 14 having a sealing recess groove 14 'through which the sealing portion 14a is inserted between the protrusions 12 and 13, and has a spiral formed on the outer circumference thereof. It is formed longer than the projections (12, 13), the triangular pressing cover 11 is provided externally to the outer protrusion formed by forming a fastening hole (17) on the central hole 16 and the outer periphery, the terminal (2) is a metal material of the conductive material, the fastening hole 21 is formed in the center Consisting with the flange portion 22 is formed of a base 23 extending in a horizontal line integrally formed with a step and the connection portion 24 of the plurality of semi-circular conical projections formed perpendicular to the base and maintaining a mutually suitable distance, the fastening The holes 25 and the cable terminal connection holes 26 which are orthogonal to the balls 21 are formed in the connection part 24, respectively, and the surface except the connection part is formed by molding the insulating resin 28, while the adapter ( 3) is screwed to the central axis (15) of the bushing and coupled in a state recessed in the fastening hole 21 of the terminal (2) and is formed by forming a plane 31 for coupling with the tab bolt 27, the insulation The tube 4 is formed as an insulator in which a plurality of protrusion rings 41 are protruded on one side inner circumference, and covers the pressure protrusions on the outer protrusions of the bushings to be fastened to the tab bowl, and the adapters are screwed to the central axis of the bushings to fasten the terminals. Insert into ball 21 and fasten as bolt Open the tube and cover the transformer secondary terminal structure being configured to combine electrical and mechanical.

2. Transformer secondary terminal structure according to claim 1, characterized in that the terminals (2) are spaced apart as spacers (23a) and constituted as a plurality of bases (23, 23 ') and a plurality of connections (24).