KR20050007513A - Gasket for Arrangement of Glass Fiber Reinforced Plastic Pipe - Google Patents

Gasket for Arrangement of Glass Fiber Reinforced Plastic Pipe Download PDF

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Publication number
KR20050007513A
KR20050007513A KR1020030047212A KR20030047212A KR20050007513A KR 20050007513 A KR20050007513 A KR 20050007513A KR 1020030047212 A KR1020030047212 A KR 1020030047212A KR 20030047212 A KR20030047212 A KR 20030047212A KR 20050007513 A KR20050007513 A KR 20050007513A
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KR
South Korea
Prior art keywords
frame
gasket
grp
rubber packing
leakage
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Application number
KR1020030047212A
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Korean (ko)
Inventor
김대중
Original Assignee
두산중공업 주식회사
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Priority to KR1020030047212A priority Critical patent/KR20050007513A/en
Publication of KR20050007513A publication Critical patent/KR20050007513A/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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • 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
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00—Pipe joints or couplings
    • Y10S285/91—Gaskets

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Gasket Seals (AREA)

Abstract

PURPOSE: A gasket is provided to prevent generation of leakage at connection portions when a GRP(Glass Fiber Reinforced Plastic Pipe) is used under high pressure. CONSTITUTION: A gasket for a GRP comprises a frame(42) and a rubber packing(41). The frame is formed by a material having a large intensity to endure the compression force when tightened by a combining means. The rubber packing is combined with the frame and formed by a material to be more easily transformed than the frame. The rubber packing shields the frame from the inside to the outside of the frame. Thereby, the leakage from a connection portion in the GRP is effectively isolated by supporting the combination force of a bolt to be concentrated in the flange through the frame and sealing the both sides of the frame through the rubber packing.

Description

지알피 배관용 개스킷 {Gasket for Arrangement of Glass Fiber Reinforced Plastic Pipe}Gasket for Arrangement of Glass Fiber Reinforced Plastic Pipe}

본 발명은 개선된 기능을 갖는 개스킷(Gasket)에 관한 것으로서, 구체적으로는 지알피(Glass Fiber Reinforced Plastic Pipe: GRP) 배관에 있어서 연결부의 누수를 방지하기 위한 개스킷에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket having an improved function, and more particularly, to a gasket for preventing leakage of a connection in a glass fiber reinforced plastic pipe (GRP) pipe.

개스킷은 유체가 내부를 흐르는 배관 등의 부품의 연결 부분에 개재되어, 유체가 누설되지 않도록 밀봉하는 역할을 하는 기계요소이다.A gasket is a mechanical element which is interposed in the connection part of components, such as piping through which a fluid flows inside, and seals a fluid so that a fluid may not leak.

통상적으로, 개스킷은 연결되는 기계요소 쌍방의 접합면에 필연적으로 존재하는 공차 범위 내의 요철을 개스킷의 변형으로 흡수하여 연결 부분의 기밀을 보존하기 위해 사용된다.Typically, the gasket is used to preserve the tightness of the connecting portion by absorbing the unevenness within the tolerance range necessarily present on the joining surfaces of both machine elements to be connected to the deformation of the gasket.

이와 같은 개스킷은 용도에 따라 내압성, 내열성 및 내부식성은 물론 적당한 정도의 압축성이 특별히 요구된다.Such gaskets require special pressure resistance as well as pressure resistance, heat resistance and corrosion resistance.

도 1에는 관의 연결부에 종래의 한 가지 재질로 이루어진 개스킷(4)이 사용된 예가 도시되어 있다.1 shows an example in which a gasket 4 made of one conventional material is used at a connection portion of a tube.

도 1에 도시된 것과 같이, 배관 연결부는 관(1)에 일체로 결합되어 있는 플렌지(2)를 서로 마주하도록 배치한 후, 연결될 양쪽의 관(1)의 플렌지(2)들 사이에 개스킷(4)을 개재시키고, 볼트(3)로 체결함으로써 개스킷(4)의 압축 변형에 의해 배관 연결부의 누설을 방지하게 된다.As shown in FIG. 1, the pipe connection is arranged so that the flanges 2 integrally coupled to the pipes 1 face each other, and then a gasket is formed between the flanges 2 of the pipes 1 of both sides to be connected. By interposing 4) and fastening with the bolt 3, leakage of the pipe connection part is prevented by compression deformation of the gasket 4.

강관을 사용하는 경우, 관내에 흐르는 유체의 압력이 높아 강관 배관에서 누설이 발생하는 경우에는 볼트를 더 조여줌으로써 누설을 방지할 수 있다.In the case of using a steel pipe, if the pressure of the fluid flowing in the pipe is high, if the leakage occurs in the steel pipe piping, it is possible to prevent the leakage by tightening the bolt further.

그러나, 일교차가 큰 지역에서는 강관의 팽창 및 수축이 계속되어 중, 고압의 유체가 흐르는 관의 연결부의 누설의 위험이 더 커진다. 또한, 관을 흐르는 유체가 해수인 해수 담수화 설비와 같은 경우에는 관을 흐르는 해수에 의해 관이 부식되기 쉽기 때문에 강관을 사용하는 것이 바람직하지 않다.However, in areas where the crossover is large, the expansion and contraction of the steel pipe continues, increasing the risk of leakage of the connection portion of the pipe through which the medium and high pressure fluid flows. In addition, in the case of a seawater desalination plant where the fluid flowing through the pipe is seawater, it is not preferable to use a steel pipe because the pipe is easily corroded by seawater flowing through the pipe.

따라서, 해수 담수화 설비의 특성상 일교차가 심한 지역에 시공되기 때문에 부식이 생기지 않으면서도, 열에 의한 팽창 및 수축이 심하지 않은 지알피 관이 해수 담수화 설비에 널리 사용된다. 지알피 관을 사용하는 경우에도, 저압(10 bar.g 이하) 배관에서는 누수의 확률이 적지만 중, 고압(15 bar.g 이상)에서는 누수의 부담이 따르게 된다.Therefore, since the construction of the seawater desalination plant in the region where the crossover is severe, the GLP pipe which is not severely expanded and contracted by heat is widely used in the seawater desalination plant without corrosion. Even in the case of using GRP pipes, the probability of leakage is low at low pressure (10 bar.g or less) piping, but the burden of leakage is accompanied at medium pressure (15 bar.g or more).

지알피 배관에 있어서, 고무 계열의 개스킷을 적용하면 경도가 낮아 누수의 위험이 크고, CAFF(Compressed Asbestos Fibre Free) 계열의 개스킷은 경도가 높아 볼트의 체결력을 증가시켜 개스킷을 더욱 압축함으로써 관 연결부의 누설을 막는데는 한계가 있다. 즉, 볼트를 더 조이는 방식으로 누설을 방지하고자 하는 경우에 충분히 개스킷이 압축 변형되기 전에 플랜지의 목부분 응력이 집중되어 플랜지가 파괴되기 쉽다.In GRP piping, rubber-based gaskets have a low hardness, which increases the risk of leakage. There is a limit to preventing leakage. In other words, in the case where it is desired to prevent leakage by tightening the bolts, the neck stress of the flange is concentrated before the gasket is sufficiently deformed and the flange is easily broken.

본 발명은 상기와 같은 문제점을 해결하기 위해 개발된 것으로, 본 발명의 목적은 열에 의한 변형이 크지 않고 부식이 생기지 않는 지알피 배관이 고압에서 사용될 때에 적합한 누설 방지용 개스킷을 개발하는 것이다.The present invention was developed to solve the above problems, and an object of the present invention is to develop a gasket for preventing leakage when GLP pipe which is not largely deformed by heat and corrosion is used at high pressure.

도 1은 종래의 개스킷을 이용하는 경우의 배관 연결부를 나타내는 부분단면도.BRIEF DESCRIPTION OF THE DRAWINGS The partial sectional drawing which shows the piping connection part when using a conventional gasket.

도 2a는 본 발명에 따른 지알피 배관용 개스킷의 평면도.Figure 2a is a plan view of a gasket for glp piping according to the present invention.

도 2b는 도 2a의 A-A선을 따라 자른 회전 단면도.FIG. 2B is a sectional view taken along the line A-A of FIG. 2A; FIG.

도 3은 본 발명에 따른 지알피 배관용 개스킷을 이용하는 경우의 배관 연결부를 나타내는 부분단면도.3 is a partial cross-sectional view showing a pipe connecting portion in the case of using a gasket for GRP pipe according to the present invention.

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

1: 관 2: 플렌지1: tube 2: flange

3: 볼트 4: 개스킷3: bolt 4: gasket

5: 플랜지의 응력 집중부 21: 볼트 체결공5: stress concentration of flange 21: bolt fastener

40: 개스킷 41: 고무 패킹40: gasket 41: rubber packing

42: 프레임 43: 볼트 체결공42: frame 43: bolt fastener

상기와 같은 본 발명의 목적은, 배관 연결부에서 플랜지면 사이에 개재되는 개스킷으로서, 체결 수단에 의해 조여질 때 압축력에 견딜 수 있도록 경도가 충분히 큰 재질의 프레임과, 상기 프레임에 결합되고 상기 프레임에 비하여 상대적으로 변형이 잘되는 재질로 이루어지며 상기 프레임을 프레임 안쪽으로부터 바깥쪽으로 감싸도록 형성되는 지알피 배관용 개스킷을 제공함으로써 달성된다.An object of the present invention as described above, a gasket interposed between the flange surface in the pipe connection portion, the frame of a material of sufficient hardness to withstand the compressive force when tightened by the fastening means, and coupled to the frame and the frame Compared with the material that is relatively deformed in comparison with the frame is achieved by providing a gasket for the GRP pipe is formed to surround the frame from the inside out.

이하에서는 첨부된 도면과 함께 본 발명의 바람직한 실시예를 살펴봄으로써 본 발명의 내용을 자세히 설명하도록 한다.Hereinafter, with reference to the accompanying drawings to examine the preferred embodiments of the present invention will be described in detail the contents of the present invention.

도 2a에는 본 발명에 따른 개스킷의 평면도가 도시되어 있고, 도 2b에서 A-A 선을 따라 자른 회전 단면도가 도시되어 있으며, 도 3에는 본 발명에 따른 개스킷을 사용하여 지알피 관을 연결하는 조립도가 도시되어 있다.Figure 2a is a plan view of the gasket according to the present invention, a cross-sectional view taken along the line AA in Figure 2b, Figure 3 is an assembly diagram for connecting the GRP pipe using the gasket according to the present invention Is shown.

도 2a에 도시된 것과 같이, 본 발명에 따른 개스킷(40)은 프레임(42)과 상기 프레임(42)에 일체로 결합되는 고무 패킹(41)으로 구성된다. 상기 프레임(42)은 재질이CAFF이고, 둘레를 따라 소정 개수의 볼트 체결공(43)이 형성되어 있다. 상기 고무 패킹(41)은 상기 프레임(42)과 접착제로 결합될 수 있다.As shown in FIG. 2A, the gasket 40 according to the present invention is composed of a frame 42 and a rubber packing 41 integrally coupled to the frame 42. The frame 42 is made of CAFF, and a predetermined number of bolt fastening holes 43 are formed along a circumference thereof. The rubber packing 41 may be combined with the frame 42 by an adhesive.

도 2b에 도시된 것과 같이, 상기 고무 패킹(41)은 상기 프레임(42)을 "ㄷ"_ 형태로감싸는 형상으로 상기 프레임(42)에 결합된다.As shown in FIG. 2B, the rubber packing 41 is coupled to the frame 42 in a shape that encloses the frame 42 in the form of "C".

도 3에 도시된 것과 같이, 본 발명에 따른 개스킷(40)은 상호 연결되는 관에구비된 플랜지부(2) 사이에 개재되고, 볼트(3)에 의해 체결된다. 상기 개스킷(40)은, 고무 패킹(41)이 프레임(42)의 안쪽에서 바깥쪽으로 "_"자 형상으로 프레임(42)을 감싸므로, 상기 플랜지(2)들 사이의 실제 씰링(sealing) 면에는 고무와 CAFF의 이중구조로 씰링이 이루어지게 된다. 상기 고무 패킹(41)은 볼트(3)의 체결력에 의해 압축 변형되어, 상기 플랜지부(2)와 상기 프레임(42) 사이의 간극을 빈틈 없이 막아 관(1)을 흐르는 유체가 누설되는 것을 철저히 막아준다. 볼트 체결력에 의한 플랜지 목부분(5)의 응력집중은 CAFF 재질의 프레임이 볼트 체결력을 지지함으로써 피할 수 있다.As shown in FIG. 3, the gasket 40 according to the invention is interposed between the flanges 2 provided in the pipes to be interconnected and fastened by bolts 3. The gasket 40 has an actual sealing surface between the flanges 2 because the rubber packing 41 surrounds the frame 42 in a "_" shape from the inside to the outside of the frame 42. The sealing is made of a dual structure of rubber and CAFF. The rubber packing 41 is compressively deformed by the fastening force of the bolt 3 to completely close the gap between the flange portion 2 and the frame 42 to prevent leakage of the fluid flowing through the pipe 1. Prevent it. Stress concentration of the flange neck 5 due to the bolt fastening force can be avoided by the CAFF frame supporting the bolt fastening force.

이와 같은 프레임(42)과 고무 패킹(41)의 이중구조로 된 개스킷(40)은 중, 고압 배관에서의 연결부의 누설을 효과적으로 막을 수 있고, 볼트의 체결력을 증가시켜 중, 고압 배관에서의 누설을 차단하는 데에 한계가 있는 지알피 관의 특성에도 잘 부합된다.Such a gasket 40 having a double structure of the frame 42 and the rubber packing 41 can effectively prevent the leakage of the connecting portion in the medium and high pressure piping, and increase the fastening force of the bolt to leak in the medium and high pressure piping. It is also well suited to the characteristics of GRP pipes, which have a limit in blocking them.

일반적으로 강관 연결부에서는 누수가 발생하더라도 볼트의 체결력을 증가시켜 중, 고압에서 생기는 누설을 대부분 막을 수가 있으나, 담수 설비에 주로 사용되는 지알피 관에서는 볼트의 체결력을 증가시킬 경우 플랜지 목부분이 파손됨으로 무작정 조일 수가 없어, 중, 고압 배관에서는 누수의 부담이 크다. 이러한 지알피 배관에 본 발명에 따른 고무와 CAFF 재질의 이중구조로 된 개스킷을 사용하는 경우, 플랜지 목부분으로 집중되는 볼트의 체결력을 CAFF 재질의 프레임이 지탱하고,고무 패킹이 플랜지 연결부의 양측에서 밀봉함으로써 지알피 관의 연결부의 누설을 효과적으로 차단할 수 있다.In general, even if a leak occurs in the steel pipe connection part, the tightening force of the bolt can be increased to prevent most leakage from medium and high pressure.However, in the GRP pipe mainly used in fresh water facilities, the flange neck part is damaged when the tightening force of the bolt is increased. It cannot be tightened accidentally, and the burden of water leakage is large in medium and high pressure piping. In the case of using a dual gasket made of rubber and CAFF according to the present invention for the GRP pipe, the frame of the CAFF material supports the clamping force of the bolt concentrated on the neck of the flange, and the rubber packing is provided at both sides of the flange connection part. By sealing, leakage of the connection part of a GRP pipe can be effectively interrupted.

이상에서는 본 발명의 특정의 바람직한 실시예에 대하여 도시하고 또한 설명하였다. 그러나, 본 발명은 상술한 실시예에 한정되지 아니하며, 특허청구의 범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능할 것이다.In the above, certain preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. will be.

Claims (1)

배관 연결부에서 플랜지면 사이에 개재되는 개스킷으로서,A gasket interposed between flange faces at a pipe connection, 체결 수단에 의해 조여질 때 압축력에 견딜 수 있도록 경도가 충분히 큰 재질의 프레임과,A frame made of a material of sufficient hardness to withstand the compressive forces when tightened by the fastening means, 상기 프레임에 결합되고 상기 프레임에 비하여 상대적으로 변형이 잘되는 재질로 이루어지며 상기 프레임을 프레임 안쪽으로부터 바깥쪽으로 감싸도록 형성되는 것을 특징으로 하는 지알피 배관용 개스킷.GRP is coupled to the frame is made of a material that is relatively deformed compared to the frame and is formed so as to surround the frame from the inside of the frame to the outside.
KR1020030047212A 2003-07-11 2003-07-11 Gasket for Arrangement of Glass Fiber Reinforced Plastic Pipe KR20050007513A (en)

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KR1020030047212A KR20050007513A (en) 2003-07-11 2003-07-11 Gasket for Arrangement of Glass Fiber Reinforced Plastic Pipe

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KR1020030047212A KR20050007513A (en) 2003-07-11 2003-07-11 Gasket for Arrangement of Glass Fiber Reinforced Plastic Pipe

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160107694A (en) 2015-03-05 2016-09-19 주식회사 국일인토트 Gasket test apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160107694A (en) 2015-03-05 2016-09-19 주식회사 국일인토트 Gasket test apparatus

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