KR20070060440A - Pipe support for thermal power plant - Google Patents

Pipe support for thermal power plant Download PDF

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Publication number
KR20070060440A
KR20070060440A KR1020050119821A KR20050119821A KR20070060440A KR 20070060440 A KR20070060440 A KR 20070060440A KR 1020050119821 A KR1020050119821 A KR 1020050119821A KR 20050119821 A KR20050119821 A KR 20050119821A KR 20070060440 A KR20070060440 A KR 20070060440A
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KR
South Korea
Prior art keywords
branch pipe
power plant
support member
fixed
thermal power
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KR1020050119821A
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Korean (ko)
Inventor
황춘석
이상일
정현일
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황춘석
이상일
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Priority to KR1020050119821A priority Critical patent/KR20070060440A/en
Publication of KR20070060440A publication Critical patent/KR20070060440A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/16—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/16—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
    • F16L3/20—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

A pipe support for a complex thermal power plant is provided to prevent generation of a crack even when the pipe used in an air intake system of the complex thermal power plant vibrates or contracts and expands. A pipe support for a complex thermal power plant includes a ring-shaped pipe fixing section(120), a plate-shaped resilient section(140), a bonding flange(150), and a base fixing section(180). A plurality of discharge holes(310) are formed in the pipe fixing section. One end of the pipe fixing section can surround the outer periphery of the end of a pipe(300). The resilient section is provided on one side of the pipe fixing section. The bonding flange can be vertically fixed to the end of the resilient section. The base fixing section is bonded to the rear side of the bonding flange eccentrically and is fixed to a base plate by bending its upper end.

Description

복합화력발전소용 지관의 지지부재{PIPE SUPPORT FOR THERMAL POWER PLANT}Support member of branch pipe for combined cycle power plant {PIPE SUPPORT FOR THERMAL POWER PLANT}

도 1은 본 발명의 바람직한 실시예로 형성된 복합화력발전소용 지관의 설치도.1 is an installation of the branch pipe for the combined cycle power plant formed in a preferred embodiment of the present invention.

도 2는 본 발명의 바람직한 실시예로 형성된 복합화력발전소용 지관의 지지부재의 사시도.Figure 2 is a perspective view of the support member of the branch pipe for the combined cycle power plant formed in a preferred embodiment of the present invention.

도 3은 본 발명의 바람직한 실시예로 형성된 복합화력발전소용 지관의 지지부재의 평면도.Figure 3 is a plan view of the supporting member of the branch pipe for the combined cycle power plant formed in a preferred embodiment of the present invention.

도 4는 본 발명의 바람직한 실시예로 형성된 복합화력발전소용 지관의 지지부재의 측면도.Figure 4 is a side view of the support member of the branch pipe for the combined cycle power plant formed in a preferred embodiment of the present invention.

도 5은 본 발명의 바람직한 실시예로 형성된 복합화력발전소용 지관의 지지부재의 설치상태도.5 is an installation state of the support member of the branch pipe for the combined cycle power plant formed in a preferred embodiment of the present invention.

도 6은 종래의 복합화력발전소용 지관의 지지부재의 설치상태도.6 is an installation state of the supporting member of the conventional pipe for the combined cycle power plant.

**<도면의 주요 부분에 대한 부호의 설명>**** <Description of the symbols for the main parts of the drawings> **

100 : 지지부재 120 : 지관고정부100: support member 120: branch pipe fixing part

140 : 탄성부 160 : 받침부140: elastic portion 160: support portion

150 : 접합플랜지 180 : 베이스고정부150: bonding flange 180: base fixing

200 : 베이스플레이트 300 : 지관200: base plate 300: branch pipe

310 : 배출홀310: discharge hole

본 발명은 복합화력발전소용 지관의 지지부재에 관한 것으로, 보다 상세하게는 복합화력발전소의 공기흡입계통에 사용되는 지관이 진동 및 수축/팽창함에도 크랙이 발생하지 않는 복합화력발전소용 지관의 지지부재에 관한 것이다.The present invention relates to a support member of a branch pipe for a combined cycle power plant, and more particularly, a support member of a branch pipe for a combined cycle power plant in which a crack does not occur even when the branch pipe used in the air suction system of the combined cycle power plant vibrates, contracts, and expands. It is about.

일반적으로 복합화력발전소에서는 가스터빈을 사용하여 전기에너지를 생산하는데, 상기 가스터빈의 압축기로 흡입되는 공기흡입계통에는 압축기에 부딪히는 급격한 압력변화(Surging) 및 흡입구의 입구의 동결을 방지하기 위해서 흡입 블리드 히팅 시스템(Inlet Bleed Heating System, 이하 IBH이라 함.)이 설치되는데, 상기 IBH는 도 1에서와 같이 압축기의 17단에 설치된 주배관으로 압축공기를 추출하여 흡입구의 입구에 설치된 다수개의 지관으로 보내게 된다. 이때 추출된 압축공기의 온도는 약 400℃에 이르게 된다.In general, a combined cycle power plant uses electric gas turbines to produce electrical energy. In the air intake system sucked into the compressor of the gas turbine, the suction bleed to prevent sudden pressure change (surging) hitting the compressor and freezing of the inlet of the inlet. A heating system (Inlet Bleed Heating System, hereinafter referred to as IBH) is installed. The IBH extracts compressed air to the main pipe installed at the 17th stage of the compressor as shown in FIG. 1 and sends it to a plurality of branch pipes installed at the inlet of the inlet. do. At this time, the extracted compressed air reaches a temperature of about 400 ° C.

상기 IBH에 사용되는 지관은 다수개의 홀이 형성되어 상기 고온의 압축공기가 분사되기 때문에 진동 및 수축/팽창하는 등 구조적으로 매우 나쁜 환경에 설치된다.The branch pipe used in the IBH is installed in a very bad environment such as vibration, shrinkage, and expansion because a plurality of holes are formed and the hot compressed air is injected.

상기 지관 끝단이 막혀 있고, 이를 벽면에 고정하기 위해서 지지부재가 사용되는데, 상기와 같이 지관이 구조적으로 매우 나쁜 환경에 때문에 지지부재의 설치가 어렵다.The end of the branch pipe is blocked, and a support member is used to fix it to the wall surface. As described above, the branch pipe is difficult to install due to the extremely bad environment.

종래의 지관의 지지부재(10)는 도 6에서와 같이, 지관(300)의 끝단에서 일정거리 이격되어 벽면에 고정된 고정부(20)가 형성되고, 상기 고정부(20)와 직각으로 판형상의 지지부(22)가 형성되어 상기 지관(300)의 끝단의 측면 외주연에 용접된다.As shown in FIG. 6, the support member 10 of the conventional paper tube is formed with a fixing portion 20 fixed to a wall spaced at a predetermined distance from the end of the paper tube 300, and is perpendicular to the fixing portion 20. An upper support 22 is formed and welded to the side outer periphery of the end of the branch pipe 300.

그러나, 종래의 지지부재(10)는 지관(300)의 온도가 상승 및 하강을 반복함으로써 수축/팽창되어 용접된 부분에서 크랙(Crack)이 발생되기도 하고, 심할 경우에는 지관(300)이 파손되는 문제점이 있었다. 또한, 높은 압력의 압축공기가 작은 구멍을 통해 배출되기 때문에 지관(300)이 진동하여 상기 지지부재(10)와 지관(300)의 용접부가 파손되어 떨어지는 등의 문제점이 있었다.However, in the conventional support member 10, cracks are generated in the welded part by contracting / expanding by repeatedly raising and lowering the temperature of the branch pipe 300, and in the case of a severe case, the branch pipe 300 is broken. There was a problem. In addition, since the compressed air of high pressure is discharged through the small hole, there is a problem that the branch pipe 300 vibrates and the weld parts of the support member 10 and the branch pipe 300 are broken and dropped.

상기한 문제점을 해결하기 위해서, 본 발명은 다음과 같은 목적으로 개발되었다.In order to solve the above problems, the present invention was developed for the following purposes.

(1) 복합화력발전소의 IBH에서 사용되는 지관의 수축/팽창에도 크랙(Crack)이 발생되지 않으면서 지지할 수 있는 지관의 지지부재를 제공함에 그 목적이 있다.(1) It is an object of the present invention to provide a support member of a paper pipe that can be supported without cracking even when shrinking / expanding the paper pipe used in the IBH of a combined cycle power plant.

(2)복합화력발전소의 접합부위가 크랙이 IBH에서 사용되는 지관의 진동에도 접합부위가 크랙이 발생되지 않으면서 지지할 수 있는 지관의 지지부재를 제공함에 그 목적이 있다.(2) The purpose of the present invention is to provide a supporting member for branch pipes in which the joint part of the combined cycle power plant can support the joint part without cracking despite the vibration of the branch pipe used in IBH.

(3) 지관을 지지하는 역할뿐만 아니라, 관리가 간편할 수 있도록 사다리의 기능을 할 수 있는 지관의 지지부재를 제공함에 그 목적이 있다.(3) In addition to supporting the branch, the purpose is to provide a branch supporting member that can function as a ladder for easy management.

상기한 목적을 달성하기 위해서, 본 발명은 원통형의 관에 다수개의 배출홀이 형성되고, 끝단은 반구형으로 막혀있는 지관의 끝단 외주연을 감쌀 수 있는 링형상의 지관고정부와;In order to achieve the above object, the present invention provides a plurality of discharge holes are formed in the cylindrical tube, the end is a ring-shaped paper tube fixing portion that can wrap the outer periphery of the end of the paper tube is blocked in a hemispherical shape;

상기 지관고정부의 일측으로 가운데의 두께가 얇은 판형상의 탄성부와;A plate-shaped elastic portion having a thin thickness in the middle of one side of the branch pipe fixing portion;

상기 탄성부의 타측 끝단에 수직하게 고정할 수 있도록 형성된 접합플랜지와;A joining flange formed to be fixed perpendicularly to the other end of the elastic part;

상기 접합플랜지의 후방에 편향되어 접착되고, 상단이 곡면으로 꺾여져서 베이스플레이트에 고정되는 베이스고정부로 구성되는 것을 특징으로 한다.It is characterized by consisting of a base fixing portion which is deflected and bonded to the rear of the joining flange, the upper end is bent into a curved surface fixed to the base plate.

이하, 본 발명을 바람직한 실시예와 첨부된 도면을 참조하여 상세하게 설명하면 다음과 같다.Hereinafter, described in detail with reference to the preferred embodiments and the accompanying drawings as follows.

도 2내지 도 5에서 본 발명은 원통형의 관에 다수개의 배출홀(310)이 형성되고, 끝단은 반구형으로 막혀있는 지관(300)의 끝단 외주연을 감쌀 수 있는 링형상의 지관고정부(120)와;2 to 5 of the present invention is a plurality of discharge holes 310 are formed in the cylindrical tube, the end is a ring-shaped paper tube fixing portion 120 that can wrap the outer peripheral edge of the end of the branch pipe 300 is blocked in a hemispherical shape )Wow;

상기 지관고정부(120)의 일측으로 가운데의 두께가 얇은 판형상의 탄성부(140)와;A plate-shaped elastic part 140 having a thin thickness in the middle of the branch pipe fixing part 120;

상기 탄성부(140)의 타측 끝단에 수직하게 고정할 수 있도록 형성된 접합플랜지(150)와;A bonding flange 150 formed to be fixed perpendicularly to the other end of the elastic portion 140;

상기 접합플랜지(150)의 후방에 편향되어 접착되고, 상단이 곡면으로 꺾여져서 베이스플레이트(200)에 고정되는 베이스고정부(180)로 구성된다.It is composed of a base fixing portion 180 which is deflected and bonded to the rear of the bonding flange 150, the upper end is bent in a curved surface and fixed to the base plate 200.

상기 지관(300)은 주배관에서 분화되는 것으로 주배관보다 직경이 작고 압축공기가 빠져나올 수 있도록 다수개의 배출홀(310)이 형성되고, 상기 지관(300)의 끝단은 반구형상으로 막혀 있다.The branch pipe 300 is differentiated from the main pipe is smaller in diameter than the main pipe and a plurality of discharge holes 310 are formed so that the compressed air can escape, the end of the branch pipe 300 is blocked in a hemispherical shape.

상기 지관(300)은 벽면에 수평으로 길게 설치되고, 다수개의 지관(300)이 상단에서 하단으로 차례대로 설치된다.The branch pipe 300 is installed horizontally long on the wall surface, a plurality of branch pipes 300 are installed in order from the top to the bottom.

상기 지관(300)의 일측은 주배관에 고정되고, 하측은 지지부재(100)에 고정되는데, 본 발명의 지지부재(100)는 벽면에 가까운 끝단 외주연에 링형상의 지관고정부(120)가 형성된다.One side of the branch pipe 300 is fixed to the main pipe, the lower side is fixed to the support member 100, the support member 100 of the present invention has a ring-shaped branch pipe fixing part 120 at the outer periphery of the end near the wall Is formed.

상기 지관고정부(120)는 일정한 폭이 형성된 링형상으로 내경이 지관(300)의 외경보다 약간 크게 형성되어서 지관(300)이 수축/팽창할 수 있는 공간을 확보하고, 수직 및 수평의 진동을 흡수해 줄 수 있도록 공간을 확보하게 된다.The branch pipe fixing part 120 is formed in a ring shape with a constant width so that the inner diameter is slightly larger than the outer diameter of the branch pipe 300 to secure a space for the branch pipe 300 to contract / expand, and vertical and horizontal vibration Space will be absorbed.

상기 지관고정부(120)의 측면에는 폭이 넓은 판자형상의 탄성부(140)가 고정되는데, 넓은 면이 지관(300)과 수직하여 설치될 수 있도록 측면으로 형성된다.A wide plate-shaped elastic portion 140 is fixed to the side of the branch pipe fixing part 120, the wide surface is formed in the side to be installed perpendicular to the branch pipe (300).

상기 탄성부(140)의 넓은 면은 중간부분에 곡면으로 면적이 좁아지는 부분이 형성되는데, 이것은 지관(300)이 상하로 진동할 때 탄성에 의해서 진동을 완화시킬 수 있도록 형성한 것이다.The wide surface of the elastic portion 140 is formed in the middle portion of the area is narrowed to the curved surface, which is formed to relieve the vibration by the elasticity when the branch pipe 300 vibrates up and down.

상기 탄성부(140)의 중앙에는 벽면에 고정되고 'ㄱ'자 형상의 받침부(160)가 이격되어 형성되는데, 상기 받침부(160)는 작업을 할 때 사다리 등의 작업이 가능하여 부자재를 사용하지 않아도 작업이 간편하도록 하기 위한 것이다.The center of the elastic portion 140 is fixed to the wall surface and the 'b' shaped support portion 160 is formed spaced apart, the support portion 160 is possible to work such as a ladder when working the auxiliary materials This is to make the operation simple even without using.

상기 탄성부(140)의 타측 끝단에는 넓은 면에 수직하여 벽면에 평행하도록 접합플랜지(150)가 형성된다.At the other end of the elastic portion 140, a bonding flange 150 is formed to be parallel to the wall surface perpendicular to the wide surface.

상기 접합플랜지(150)의 하단에는 베이스고정부(180)가 형성되는데, 상기 베이스고정부(180)는 직사각 판재형상의 상단을 'ㄷ'자 형상으로 꺾어서 벽면과 고정할 수 있도록 형성된다.A base fixing part 180 is formed at a lower end of the joining flange 150. The base fixing part 180 is formed to be fixed to a wall surface by bending an upper end of a rectangular plate shape in a 'c' shape.

상기 베이스고정부(180)는 지관(300)이 팽창하여 지관고정부(130)의 내경과 일치하여 진동할 때 좌우의 진동을 흡수할 수 있도록 상단이 굽은 'ㄷ'자 형상으로 형성된다.The base fixing part 180 is formed in a 'c' shaped bent top so that the branch pipe 300 is expanded to absorb the left and right vibrations when the branch pipe vibrates in accordance with the inner diameter of the branch pipe fixing part 130.

상기 지관(300)은 보통 17~19개가 가로방향으로 상부에서부터 차례대로 설치되는데, 지관(300)이 온도로 인해 팽창하게 되면 지관(300)과 지관고정부(120)와의 간극 때문에 수용이 가능하고, 수축하게 되어도 지관고정부(120)의 내부하단에 놓여지므로 고정이 가능하며, 상기 지관(300)이 팽하여 진동할 경우에도 상하진동을 탄성부(140)가 좌우진동을 베이스고정부(180)가 흡수할 수 있으므로 지관(300)을 보호하면서 지지할 수 있는 것이다.The branch pipe 300 is usually 17 to 19 pieces are installed in turn from the top in the horizontal direction, if the branch pipe 300 is expanded due to the temperature is accommodated because of the gap between the branch pipe 300 and the branch pipe fixing part 120. Even if it is contracted, it is possible to fix it because it is placed at the inner lower end of the branch pipe fixing part 120. ) Can be absorbed and can be supported while protecting the branch pipe (300).

상기한 것과 같이, 본 발명의 복합화력발전소용 지관의 지지부재에 의하면 다음과 같은 효과가 발생한다.As described above, according to the support member of the branch pipe for the combined cycle power plant of the present invention the following effects occur.

(1) 지관이 수축/팽창하여도 지지부재와의 접합부위가 손상되지 않는 효과가 있다.(1) Even if the branch pipe is shrunk / expanded, the joint portion with the support member is not damaged.

(2) 지관이 진동하여도 지지부재가 진동을 흡수할 수 있어서 안전한 효과가 있다.(2) Even if the branch pipe vibrates, the support member can absorb the vibrations, thereby providing a safe effect.

(3) 작업자가 작업을 할 때 사다리 등의 보조기구를 사용하지 않아도 작업할 수 있으므로 작업이 편리한 효과가 있다.(3) Since the worker can work without the use of assistive devices such as ladders, the work is convenient.

Claims (6)

원통형의 관에 다수개의 배출홀(310)이 형성되고, 끝단은 반구형으로 막혀있는 지관(300)의 끝단 외주연을 감쌀 수 있는 링형상의 지관고정부(120)와;A plurality of discharge holes 310 is formed in the cylindrical tube, the end is a ring-shaped paper tube fixing portion 120 that can wrap the outer periphery of the end of the paper tube 300 is closed in a hemispherical shape; 상기 지관고정부(120)의 일측으로 판형상의 탄성부(140)와;And plate-shaped elastic portion 140 to one side of the branch pipe fixing portion 120; 상기 탄성부(140)의 타측 끝단에 수직하게 고정할 수 있도록 형성된 접합플랜지(150)와;A bonding flange 150 formed to be fixed perpendicularly to the other end of the elastic portion 140; 상기 접합플랜지(150)의 후방에 편향되어 접착되고, 상단이 곡면으로 꺾여져서 베이스플레이트(200)에 고정되는 베이스고정부(180)로 구성된 것을 특징으로 하는 복합화력발전소용 지관의 지지부재.The support member of the combined thermal power plant branch support 150, characterized in that composed of a base fixing part 180 is deflected to the rear of the junction flange 150, the upper end is bent into a curved surface fixed to the base plate 200. 제 1항에 있어서,The method of claim 1, 상기 지관고정부(120)는 링형상으로 내경이 지관(300)의 외경보다 약간 크게 형성되고, 측면에는 폭이 넓은 판자형상의 탄성부(140)가 고정되는데, 넓은 면이 지관(300)과 수직하여 설치될 수 있도록 형성된 것을 특징으로 하는 복합화력발전소용 지관의 지지부재.The branch pipe fixing part 120 is formed in a ring-shaped inner diameter slightly larger than the outer diameter of the branch pipe 300, the wide plate-shaped elastic portion 140 is fixed to the side, the wide surface is the branch pipe 300 and Support member of the branch pipe for the combined cycle power plant, characterized in that it is formed so as to be installed vertically. 제 1항에 있어서,The method of claim 1, 상기 탄성부(140)는 넓은 면의 중간부분에 곡면으로 면적이 좁아지도록 형성된 것을 특징으로 하는 복합화력발전소용 지관의 지지부재.The elastic portion 140 is a support member of the branch pipe for a combined cycle power plant, characterized in that formed in the middle portion of the broad surface to narrow the area. 제 1항에 있어서,The method of claim 1, 상기 베이스고정부(180)는 직사각 판재형상의 상단을 'ㄷ'자 형상으로 꺾어서 벽면에 고정할 수 있도록 형성된 것을 특징으로 하는 복합화력발전소용 지관의 지지부재.The base fixing part 180 is a support member for a composite thermal power plant branch pipe, characterized in that formed to be fixed to the wall by folding the top of the rectangular plate shape in the 'c' shape. 제 1항에 있어서,The method of claim 1, 상기 탄성부재(140)의 중앙 하단에는 이격되어 벽면에 고정된 'ㄱ'자 형상의 받침부(160)가 형성된 것을 특징으로 하는 복합화력발전소용 지관의 지지부재.Support member of the composite thermal power plant branch pipe, characterized in that the bottom of the elastic member 140 is spaced apart from the bottom of the 'b' shaped fixed portion 160 is fixed to the wall. 제 1항 또는 제4항에 있어서,The method according to claim 1 or 4, 상기 접합플랜지(150)는 베이스고정부(180)의 전면에 편향되어 형성된 것을 특징으로 하는 복합화력발전소용 지관의 지지부재.The joining flange 150 is a support member of a branch pipe for a combined cycle power plant, characterized in that formed on the front surface of the base fixing part 180.
KR1020050119821A 2005-12-08 2005-12-08 Pipe support for thermal power plant KR20070060440A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100836145B1 (en) * 2007-06-05 2008-06-09 이봉주 Up-and-down apparatus of the adapter
KR200450428Y1 (en) * 2008-07-28 2010-10-01 김대식 Angle variable type hanger for pipe supporting
KR200451734Y1 (en) * 2008-05-23 2011-01-10 (주)와콘엔지니어링 The conduit suspending apparatus for the bridge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100836145B1 (en) * 2007-06-05 2008-06-09 이봉주 Up-and-down apparatus of the adapter
KR200451734Y1 (en) * 2008-05-23 2011-01-10 (주)와콘엔지니어링 The conduit suspending apparatus for the bridge
KR200450428Y1 (en) * 2008-07-28 2010-10-01 김대식 Angle variable type hanger for pipe supporting

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