KR101033642B1 - Apparatus for preventing corrosion of joint on iron tower - Google Patents

Apparatus for preventing corrosion of joint on iron tower Download PDF

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Publication number
KR101033642B1
KR101033642B1 KR1020090133192A KR20090133192A KR101033642B1 KR 101033642 B1 KR101033642 B1 KR 101033642B1 KR 1020090133192 A KR1020090133192 A KR 1020090133192A KR 20090133192 A KR20090133192 A KR 20090133192A KR 101033642 B1 KR101033642 B1 KR 101033642B1
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South Korea
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fastening
tower
cylindrical
transmission
joint
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KR1020090133192A
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Korean (ko)
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유충희
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(주)한국에스코
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
    • E04B1/642—Protecting metallic construction elements against corrosion

Abstract

PURPOSE: A corrosion preventing device for a joint unit of a post of a power-transmission, transformation, and distribution steel tower is provided to prevent water penetration by the installation of a rubber gasket between a second cylindrical part and a steel tower post. CONSTITUTION: A corrosion preventing device for a joint unit of a post of a power-transmission, transformation, and distribution steel tower comprises a main body(100) and a fitting cover(200). The main body comprises first and second cylindrical parts(110,130), an inclined part(120), and a pair of fastening ribs(140). The inclined part is extended at an incline from the top end of the first cylindrical part. The second cylindrical part is vertically and upward extended from the inclined part to cover a steel tower post(10). Fastening bolts(141) and nuts(142) are installed in multiple fastening holes of the fastening ribs. The fastening ribs are inserted into fitting grooves(201) of the fitting cover.

Description

송전변전 배전 철탑기둥 이음부 부식방지 장치{APPARATUS FOR PREVENTING CORROSION OF JOINT ON IRON TOWER}Power Transmission Substation Distribution Tower Corrosion Prevention Device {APPARATUS FOR PREVENTING CORROSION OF JOINT ON IRON TOWER}

본 발명은 송전변전 배전 철탑기둥 이음부 부식방지 장치에 관한 것으로서, 보다 구체적으로는 종래의 철탑기둥 이음부에 산성 눈, 빗물 등이 플랜지로 이루어진 그 이음부 틈새로 침투되어 부식현상을 발생시키는 것을 방지하기 위한 송전변전 배전 철탑기둥 이음부 부식방지 장치에 관한 것이다.The present invention relates to an apparatus for preventing corrosion of power transmission and distribution steel tower column joints, and more specifically, to induce corrosion by infiltrating into a gap between joints formed by flanges of acid snow, rain water, etc. in a conventional steel column pillar joint. The present invention relates to an anti-corrosion apparatus for power transmission substation distribution tower column joint.

송전변전 배전 철탑은 시공 후 어느 정도의 시간이 지나면 산화작용에 의해 부식이 일어나는데, 그 중에서도 특히 철탑기둥간의 이음부에서 이러한 부식현상이 주로 발생된다. 이를 보완하고자 아연도금이 된 철재를 사용하고 있으나, 그러한 도금상태 또한 장기간의 사용이 보장되어야 하는 철탑에는 임시방편적인 효과만 나타낼 뿐인 한편, 철탑의 사용수명을 연장하기 위해서는 철탑의 정기적인 점검, 부품교체, 보강 등에 더욱 주의를 기우려야 하지만, 이를 위해 행해지는 작업과정, 예로써 부식된 철재의 표면에서 녹을 완전히 제거한 다음 그 위에 페인팅을 하거 나, 부식된 기존 철재에 보강 철재를 덧대어 보강하거나, 부식된 철재 위에 새로운 철재를 결합하거나, 부식된 철재를 완전히 제거하고 새로운 철재로 교체하는 등의 작업과정이 매우 번거로움에 따라 철탑, 그 중에서도 철탑 이음부의 부식 방지를 위한 방안이 조속히 마련되어야 한다. The transmission and distribution distribution tower is corrosion by oxidation after a certain time after construction, and the corrosion phenomenon mainly occurs at the joint between the column pillars. To compensate for this, galvanized steel is used. However, the plating state also has only a temporary effect on steel towers that should be guaranteed for long-term use. More attention should be paid to replacement, reinforcement, etc., but this is done by completely removing rust from the surface of the corroded steel and painting on it, or by reinforcing the corroded steel with reinforcing steel, As the process of joining new steel on the corroded steel or removing the corroded steel completely and replacing it with new steel is very cumbersome, measures to prevent corrosion of the steel tower, especially the steel tower joints, should be prepared as soon as possible.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위해 안출된 것으로서, 송전변전 배전 철탑기둥의 이음부위에서 산성눈, 빗물 등에 의해 발생가능한 부식을 방지하기 위한 송전변전 배전 철탑기둥 이음부 부식방지 장치를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems of the prior art, the transmission substation distribution tower tower corrosion prevention device for preventing corrosion caused by acid snow, rain water at the joint portion of the transmission tower distribution tower. The purpose is to provide.

상기 목적을 달성하기 위하여, 본 발명은, 양단에 구비된 플랜지로 연결되는 송전변전 배전 철탑기둥의 이음부에서 발생가능한 부식을 방지하기 위한 장치로서, 수직하게 1/2로 절단된 원기둥 형상으로 한 쌍이 상기 플랜지를 둘러싸는 제1 원통부와, 상기 제1 원통부 상단으로부터 내측으로 경사지게 연장되는 경사부와, 상기 철탑기둥을 둘러싸도록 상기 경사부로부터 수직하게 상측으로 연장되는 제2 원통부로 이루어지되, 상기 제1 및 제2 원통부 및 경사부 양단에 길이방향을 따라 체결볼트 및 너트의 설치를 위해 복수개의 체결홀이 형성된 체결리브가 구비되는 본체부 와; 상기 체결볼트 및 너트에 의해 고정된 한 쌍의 체결리브가 끼움되는 끼움홈이 형성된 끼움커버;로 구성되는 것을 특징으로 한다.In order to achieve the above object, the present invention, as a device for preventing the corrosion that can occur at the joint of the power transmission substation distribution tower tower connected by a flange provided at both ends, a cylindrical shape cut in half vertically The pair includes a first cylindrical portion surrounding the flange, an inclined portion extending inclined inwardly from an upper end of the first cylindrical portion, and a second cylindrical portion extending vertically upwardly from the inclined portion to surround the pylon pillar. A main body part having fastening ribs formed with a plurality of fastening holes for installation of fastening bolts and nuts along a longitudinal direction at both ends of the first and second cylindrical parts and the inclined part; And a fitting cover having a fitting groove in which a pair of coupling ribs fixed by the fastening bolt and the nut are fitted.

또한 상기 제2 원통부 및 철탑기둥 사이에는 누수를 차단하기 위한 가스켓이 설치되는 것을 특징으로 한다.In addition, a gasket for blocking leakage is installed between the second cylindrical portion and the pylon.

상술된 바와 같이, 본 발명에 따른 송전변전 배전 철탑기둥 이음부 부식방지 장치는 철탑기둥의 이음부로 산성눈, 빗물 등이 침투되지 않도록 하는 본체부의 견고한 설치구조를 통해 이러한 이음부의 부식을 방지할 수 있다.As described above, the transmission substation distribution tower pillar corrosion prevention device according to the present invention can prevent the corrosion of these joints through a rigid installation structure of the body portion to prevent the penetration of acid snow, rainwater, etc. into the joints of the tower column. have.

이하, 도면을 참조로 하여 본 발명에 따른 송전변전 배전 철탑기둥 이음부 부식방지 장치를 설명하기로 한다.Hereinafter, an apparatus for preventing corrosion of a power transmission substation distribution tower column joint according to the present invention will be described with reference to the drawings.

도 1은 본 발명에 따른 송전변전 배전 철탑기둥 이음부 부식방지 장치를 도시한 분해사시도이고, 도 2는 본 발명에 따른 송전변전 배전 철탑기둥 이음부 부식방지 장치를 도시한 결합사시도이다.1 is an exploded perspective view illustrating a corrosion prevention apparatus for a transmission tower distribution pole tower joint according to the present invention, Figure 2 is a combined perspective view showing a corrosion prevention apparatus for a transmission tower distribution pole tower joint according to the present invention.

본 발명에 따른 송전변전 배전 철탑기둥 이음부 부식방지 장치는 양단에 구 비된 플랜지(11)로 연결되는 송전변전 배전 철탑기둥(10)의 이음부에서 발생가능한 부식을 방지하기 위한 장치로서, 기본적으로 양단으로부터 연장되는 체결리브(140)를 고정시킴에 따라 플랜지(11) 및 철탑기둥(10)을 둘러싸도록 고정되는 본체부(100)와, 본체부(100)의 체결리브(140)에 끼움설치되는 끼움커버(200)로 이루어진다.Transmission transmission distribution tower tower corrosion protection device according to the present invention is a device for preventing the corrosion that can occur at the joint of the transmission transmission grid tower 10 connected to the flange 11 provided at both ends, basically As the fastening ribs 140 extending from both ends are fixed, the main body 100 is fixed to surround the flange 11 and the pylon column 10, and the fitting ribs 140 are fitted to the fastening ribs 140 of the main body 100. Being made of a fitting cover 200.

상기 본체부(100)는 전체적으로 플라스틱이나 고무와 같은 절연물을 그 재질로 하고, 수직하게 1/2로 절단된 원기둥 형상으로 한 쌍이 플랜지(11)를 둘러싸도록 배치되는 제1 원통부(110)와, 제1 원통부(110) 상단으로부터 내측으로 경사지게 연장되는 경사부(120)와, 철탑기둥(10)을 둘러싸도록 경사부(120)로부터 수직하게 상측으로 연장되는 제2 원통부(130)로 이루어지는데, 그 제1 및 제2 원통부(110, 130) 및 경사부(120) 양단의 길이방향을 따라 체결볼트(141) 및 너트(142)의 설치를 위해 복수개의 체결홀(143)이 형성된 체결리브(140)가 구비된 구조를 갖는다.The main body portion 100 is made of an insulator such as plastic or rubber as a whole, and has a cylindrical shape cut in half vertically, and a pair of first cylindrical portions 110 arranged to surround the flange 11. , The inclined portion 120 inclined inwardly from the upper end of the first cylindrical portion 110, and the second cylindrical portion 130 extending upwardly vertically from the inclined portion 120 to surround the pylon pillar 10. A plurality of fastening holes 143 are provided for installation of the fastening bolt 141 and the nut 142 along the longitudinal direction of both ends of the first and second cylindrical parts 110 and 130 and the inclined part 120. It has a structure provided with a fastening rib 140 formed.

이와 같은 구조에서, 한 쌍의 본체부(100) 중 제2 원통부(130)가 철탑기둥(10) 외주면에 밀착된 상태로 고정가능한 크기를 갖거나, 제1 및 제2 원통부(110, 130)가 각각 플랜지(11) 및 철탑기둥(10) 외주면에 밀착된 상태로 고정가능한 크기를 가짐에 따라 체결리브(140)를 체결볼트(141) 및 너트(142)로 고정할 시에 철탑기둥(10)에 본체부(100)가 밀착 고정될 수 있는 한편, 경사부(120)가 이루는 직경이 플랜지(11)보다는 작고 철탑기둥(10)보다는 크기 때문에 제1 및 제2 원통부(110, 130) 각각이 플랜지(11) 및 철탑기둥(10) 외주면에 밀착된 상태를 유지하지 못하더라도 본체부(100)의 경사부(120)가 자중에 의해 플랜지(11)에 걸려있는 상태를 유지하게 된다.In such a structure, the second cylindrical portion 130 of the pair of main body portion 100 has a size that can be fixed in close contact with the outer circumferential surface of the pylon 10, or the first and second cylindrical portion 110, As the 130 has a size that can be fixed in close contact with the outer circumferential surface of the flange 11 and the tower column 10, respectively, the tower column at the time of fixing the fastening rib 140 with the fastening bolt 141 and the nut 142. While the main body portion 100 may be tightly fixed to the 10, the diameter of the inclined portion 120 is smaller than the flange 11 and larger than the pylon 10, so that the first and second cylindrical portions 110, 130, even if each of the flange 11 and the pylon column 10 does not maintain a state in close contact with the inclined portion 120 of the main body portion 100 to maintain the state hanging on the flange 11 by its own weight do.

여기서 상기 제2 원통부(130) 및 철탑기둥(10) 사이에 고무를 그 재질로 하는 밴드 형태의 가스켓(300)을 설치하여 그 사이로 물이 스며드는 것을 방지할 수 있으며, 가스켓(300) 설치 후 추가적으로 실리콘과 같은 방수재를 제2 원통부(130) 및 가스켓(300) 위쪽으로 도포하여 수밀성을 향상시킬 수도 있다.Here, a band-shaped gasket 300 made of rubber may be installed between the second cylindrical portion 130 and the pylon 10 to prevent water from penetrating therebetween, and after the gasket 300 is installed. In addition, a waterproof material such as silicon may be applied to the second cylindrical part 130 and the gasket 300 to improve watertightness.

추가적으로 도면에는 도시되지 않았으나, 상기 제2 원통부(130), 철탑기둥(10) 및 가스켓(300) 사이로 경미하게 수분이 흘러내리는 경우를 대비하여, 경사부(120) 내측면으로부터 중앙부로 진행함에 따라 상측으로 라운딩처리된 물받이부를 더 설치함으로써 그 흘러내리는 수분이 물받이부에서 장시간 체류하도록 하여 증발현상으로 이러한 수분을 제거할 수도 있다.In addition, although not shown in the drawing, in case of slightly water flows down between the second cylindrical portion 130, the pylon 10 and the gasket 300, to proceed from the inner surface of the inclined portion 120 to the center portion. Accordingly, by installing the drip tray portion rounded upward, the water flowing down may stay in the drip portion for a long time to remove such water by evaporation.

상기 끼움커버(200)는 한 쌍의 본체부(100)를 체결볼트(141) 및 너트(142)로 고정시킨 상태의 체결리브(140)에 끼움되는 끼움홈(201)이 형성된 것으로, 체결볼트(141) 및 너트(142) 각각이 외부로 노출되는 것을 방지하여 산성수, 빗물 등에 의해 부식되지 않도록 한다.The fitting cover 200 is formed with a fitting groove 201 to be fitted to the fastening rib 140 in a state in which the pair of main body 100 is fixed with the fastening bolt 141 and the nut 142, the fastening bolt Each of the 141 and the nut 142 is prevented from being exposed to the outside so as not to be corroded by acidic water or rain water.

도면에서와 같이 이 끼움커버(200)는 체결리브(140)의 형상과 유사하게 제작 되되, 그 일측면이 본체부(100)와 밀착되도록 소정의 곡률을 갖게 된다.As shown in the drawing, the fitting cover 200 is manufactured similarly to the shape of the fastening rib 140, and has a predetermined curvature such that one side thereof is in close contact with the main body 100.

상기 끼움커버(200)의 끼움홈(201)에 방수재 및 접착재로 동시에 기능할 수 있는 실리콘을 충전한 다음으로 체결리브(140)에 설치하여 끼움커버(200)의 고정상태를 보다 양호하게 유지할 수 있다.Filling groove 201 of the fitting cover 200 is filled with silicon that can function simultaneously as a waterproofing material and an adhesive material, and then installed in the fastening ribs 140 can maintain the fixed state of the fitting cover 200 better have.

도 1은 본 발명에 따른 송전변전 배전 철탑기둥 이음부 부식방지 장치를 도시한 분해사시도.1 is an exploded perspective view illustrating a corrosion prevention apparatus of a transmission tower distribution steel tower column joint according to the present invention.

도 2는 본 발명에 따른 송전변전 배전 철탑기둥 이음부 부식방지 장치를 도시한 결합사시도.Figure 2 is a perspective view showing a transmission transmission distribution distribution tower tower corrosion protection device according to the present invention.

Claims (2)

양단에 구비된 플랜지(11)로 연결되는 송전변전 배전 철탑기둥(10)의 이음부에서 발생가능한 부식을 방지하기 위한 장치에 있어서,In the device for preventing possible corrosion in the joint portion of the transmission and distribution distribution tower tower 10 connected to the flange 11 provided at both ends, 수직하게 1/2로 절단된 원기둥 형상으로 한 쌍이 상기 플랜지(11)를 둘러싸는 제1 원통부(110)와, 상기 제1 원통부(110) 상단으로부터 내측으로 경사지게 연장되는 경사부(120)와, 상기 철탑기둥(10)을 둘러싸도록 상기 경사부(120)로부터 수직하게 상측으로 연장되는 제2 원통부(130)로 이루어지되, 상기 제1 및 제2 원통부(110, 130) 및 경사부(120) 양단에 길이방향을 따라 체결볼트(141) 및 너트(142)의 설치를 위해 복수개의 체결홀(143)이 형성된 체결리브(140)가 구비되고 절연물을 그 재질로 하는 본체부(100)와;The first cylindrical portion 110 that surrounds the flange 11 and the inclined portion 120 inclined inwardly from the upper end of the first cylindrical portion 110 in a cylindrical shape cut in half vertically And a second cylindrical portion 130 vertically extending upward from the inclined portion 120 so as to surround the pylon pillar 10, wherein the first and second cylindrical portions 110 and 130 are inclined. Body parts (120) having fastening ribs 140 having a plurality of fastening holes 143 formed therein for installing the fastening bolts 141 and the nuts 142 along the longitudinal direction at both ends thereof and having an insulator as the material ( 100); 상기 체결볼트(141) 및 너트(142)에 의해 고정된 한 쌍의 체결리브(140)가 끼움되는 끼움홈(201)이 형성된 끼움커버(200);로 구성되되,Consists of the fitting cover 200 is formed with a fitting groove 201 is fitted with a pair of fastening ribs 140 fixed by the fastening bolt 141 and the nut 142, 상기 제2 원통부(130) 및 철탑기둥(10) 사이에는 누수를 차단하기 위한 가스켓(300)이 설치되며,Between the second cylindrical portion 130 and the pylon 10 is provided with a gasket 300 for blocking the leakage, 상기 경사부(120) 내측면으로부터 중앙부로 진행함에 따라 상측으로 라운딩처리된 물받이부가 더 설치되는 것을 특징으로 하는 송전변전 배전 철탑기둥 이음부 부식방지장치.Transmission inversion distribution tower pylon joint corrosion prevention device characterized in that the inlet is further provided with a drip tray rounded upward as it proceeds from the inner side of the inclined portion (120). 삭제delete
KR1020090133192A 2009-12-29 2009-12-29 Apparatus for preventing corrosion of joint on iron tower KR101033642B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101639704B1 (en) 2016-02-15 2016-07-15 (주)한신콘설탄트 Apparatus for preventing corrosion of transmission or electrical distribution steel towers and steel structure for substation
KR101957643B1 (en) 2018-09-19 2019-03-12 유경문 Connecting system of iron tower
KR20190076736A (en) * 2017-12-22 2019-07-02 주식회사 포스코 Connection plate of steel bridge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544229A (en) * 1991-08-09 1993-02-23 Kawasaki Heavy Ind Ltd Corrosion protective method of bolt and nut and corrosion protective cover
JPH0665572U (en) * 1992-05-08 1994-09-16 東京電力株式会社 Cushioning structure for leg joints and cushioning material used therefor
JPH11262146A (en) * 1998-03-12 1999-09-24 Fujikura Ltd Bolt removing preventing structure for junction point of power transmission tower
KR20090102355A (en) * 2008-03-26 2009-09-30 여용석 Lower part protection structure for roadlamp and others

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544229A (en) * 1991-08-09 1993-02-23 Kawasaki Heavy Ind Ltd Corrosion protective method of bolt and nut and corrosion protective cover
JPH0665572U (en) * 1992-05-08 1994-09-16 東京電力株式会社 Cushioning structure for leg joints and cushioning material used therefor
JPH11262146A (en) * 1998-03-12 1999-09-24 Fujikura Ltd Bolt removing preventing structure for junction point of power transmission tower
KR20090102355A (en) * 2008-03-26 2009-09-30 여용석 Lower part protection structure for roadlamp and others

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101639704B1 (en) 2016-02-15 2016-07-15 (주)한신콘설탄트 Apparatus for preventing corrosion of transmission or electrical distribution steel towers and steel structure for substation
KR20190076736A (en) * 2017-12-22 2019-07-02 주식회사 포스코 Connection plate of steel bridge
KR102125364B1 (en) * 2017-12-22 2020-06-22 주식회사 포스코 Connection plate of steel bridge
KR101957643B1 (en) 2018-09-19 2019-03-12 유경문 Connecting system of iron tower

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