KR20090003898A - Gas leak pipe mounting structure for casing of underground laying gas pipe - Google Patents

Gas leak pipe mounting structure for casing of underground laying gas pipe Download PDF

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KR20090003898A
KR20090003898A KR1020070067648A KR20070067648A KR20090003898A KR 20090003898 A KR20090003898 A KR 20090003898A KR 1020070067648 A KR1020070067648 A KR 1020070067648A KR 20070067648 A KR20070067648 A KR 20070067648A KR 20090003898 A KR20090003898 A KR 20090003898A
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South Korea
Prior art keywords
casing
pipe
gas
gas leakage
mortar
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KR1020070067648A
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Korean (ko)
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KR100888392B1 (en
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백영민
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한국가스공사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • 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
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pipeline Systems (AREA)

Abstract

A gas leak detection pipe installation structure for a casing of underground laying gas pipe is provided to make the installation smooth by maintaining the position of a gas leak sensing pipe when pouring mortar to seal the opening of the casing. A gas leak sensing pipe installation structure for a casing of underground laying gas pipe comprises a pipe(1) is laid through the inside of a casing(2), an asphalt coating pipe(3) and a rubber ring(4) which insulate the pipe and the casing from each other, a sand bag(5) and mortar which tightly shut the opening of both sides of the casing, and a gas leakage detection pipe(7) connecting the internal space of the casing and the space above ground. The casing and the gas leakage detection pipe are electrically connected with each other.

Description

매설 가스배관 케이싱의 가스누설 검지용 파이프 설치구조{gas leak pipe mounting structure for casing of underground laying gas pipe}Gas leak pipe mounting structure for casing of underground laying gas pipe}

본 발명은 지하에 매설되는 가스배관에 관한 것으로, 특히 가스배관 보호를 위한 케이싱 설치부에 가스누설 검지용 파이프를 설치하는 구조에 관한 것이다.The present invention relates to a gas pipe buried underground, and more particularly, to a structure for installing a gas leakage detection pipe to the casing installation for protecting the gas pipe.

액화천연가스는 지하에 매설된 배관을 통해 각 도시의 사용처로 공급된다. 상기 매설 배관은 주로 강재의 원형 관으로서 지중의 여러 요인에 의하여 부식이 발생하게 된다.Liquefied natural gas is supplied to the use of each city through underground pipes. The buried pipe is a circular pipe mainly made of steel, and corrosion is caused by various factors in the ground.

부식은 금속이 전자를 방출하면서 산화되는 현상으로서 금속이온이 배관으로부터 이탈되어 부식환경인 지중으로 이동함으로써 점차 모재의 손실이 발생하게 되며, 결국 배관의 중량 및 두께가 감소하여 내구성이 저하되므로 그 수명이 감소하게 된다.Corrosion is a phenomenon in which metals are oxidized while releasing electrons. As metal ions move away from the pipes and move to the ground, which is a corrosive environment, the loss of the base material gradually occurs. This decreases.

따라서, 상기와 같은 부식현상을 방지하기 위하여 배관의 표면을 폴리에틸렌 등의 합성수지로 코팅하여 토양으로부터 배관을 절연하고, 또한 배관보다 부식이 잘되는 희생양극을 도선으로 배관과 연결하거나 외부로부터 직류전원을 가하여 배관을 음극화하여 토양에 비해 상대적으로 전위를 낮춤으로써 부식현상을 억제하는 음극방식의 전기방식(電氣防蝕)을 이용하고 있다.Therefore, in order to prevent the above corrosion phenomenon, the surface of the pipe is coated with synthetic resin such as polyethylene to insulate the pipe from the soil, and also connect the sacrificial anode which is more corrosive than the pipe with the wire by the wire or apply DC power from the outside. Cathodes are used in the cathodic electrical system, which reduces corrosion by reducing the potential relative to soil by cathodic piping.

한편, 가스배관 경로상의 지상 환경은 매우 다양한데, 특히 도로와 같이 하중의 변화와 진동이 심한 곳에서는 그에 따른 충격으로부터 배관을 보호하기 위하여 배관을 둘러싸는 케이싱을 설치하고 있다.On the other hand, the ground environment on the gas pipe path is very diverse, especially in places where the load change and vibration, such as roads are severe, to install the casing surrounding the pipe to protect the pipe from the impact.

즉, 도 1에 도시된 바와 같이, 배관(1)이 보다 큰 지름의 강재 원형관으로 제작된 케이싱(2)을 관통하는 상태로 지중에 매설되되, 상기 배관(1)의 외주에는 도복장강관(3)과 러버링(rubber ring;4)을 설치하여 배관(1)과 케이싱(2) 사이를 절연하고, 상기 케이싱(2)의 양쪽 개구부는 안쪽에 모래포대(sand bag;5)를 쌓고 외측에 모르타르(mortar;6)를 타설함으로써 밀폐하고 있다.That is, as shown in Figure 1, the pipe (1) is buried in the ground in a state penetrating the casing (2) made of a steel circular pipe of a larger diameter, the coated steel pipe on the outer periphery of the pipe (1) (3) and a rubber ring (4) are installed to insulate between the pipe (1) and the casing (2), and both openings of the casing (2) are piled with sand bags (5) It is sealed by pouring mortar 6 on the outside.

또한, 상기 모래포대(5)와 모르타르(6)를 통해 통상 GLP(Gas Leak Pipe)라 지칭되는 가스누설 검지용 파이프(7)를 케이싱(2) 내부의 공간과 지상공간을 연결하도록 설치하여 배관(1) 손상으로 인해 가스가 누출되었을 경우 이를 검지할 수 있도록 하고 누출된 가스를 대기중으로 방출하는 역할을 수행하였다.In addition, through the sand bag (5) and the mortar (6), a gas leakage detection pipe (7), commonly referred to as GLP (Gas Leak Pipe) is installed to connect the space inside the casing (2) and the ground space pipe (1) When gas leaked due to damage, it was able to detect and release the leaked gas into the atmosphere.

또한, 상기 배관(1) 뿐만 아니라 상기 케이싱(2)에도 부식이 발생하므로 케이싱(2)에도 전기방식이 이루어지고 있다.In addition, since the corrosion occurs not only in the pipe 1, but also in the casing 2, the electric system is also made in the casing 2.

이러한 전기방식작용이 지하철 및 다른 매설 전기설비에 의한 누설전류, 다른 배관의 접지, 배관의 코팅 손상 등 환경의 변화에 따라 적절히 이루어지지 않을 수 있으므로 정기적으로 방식상태를 점검해야만 한다.Since the electric system may not be properly performed due to changes in the environment such as leakage currents caused by subways and other buried electric facilities, grounding of other pipes, and damage to coatings on the pipes, the condition of the electric system should be regularly checked.

이를 위해 도시된 바와 같이, 배관(1)과 케이싱(2)에 리드선(8a,8b)을 연결하여 지표에 매설된 테스트박스(9)로 단자가 노출되도록 하고 있으며, 이를 통해 방식전위를 측정함은 물론 배관(1)과 케이싱(2) 사이의 절연여부를 검사하고 있다.To this end, by connecting the lead wires (8a, 8b) to the pipe (1) and the casing (2) to expose the terminal to the test box (9) embedded in the ground, through which the anticorrosive potential is measured Of course, the insulation between the pipe 1 and the casing 2 is examined.

그런데, 종래에는 타 공사에 의해 상기 케이싱(2)에 연결된 리드선(8b)이 단선되거나 유실되었을 경우 케이싱(2)의 방식전위 및 배관(1)과 케이싱(2) 간의 절연여부를 검지할 수 없게 되는 문제점이 있었다.However, in the related art, when the lead wire 8b connected to the casing 2 is disconnected or lost by another construction, the anticorrosive potential of the casing 2 and the insulation between the pipe 1 and the casing 2 cannot be detected. There was a problem.

또한, 모르타르(6) 타설시 상기 가스누설 검지용 파이프(7)가 모래포대(5)에 눌려진 압력만으로 고정상태를 유지해야만 하므로 타설 압력에 의해 직립상태를 유지하지 못하고 쓰러지게 되어 작업이 불편해지는 문제점이 있었다.In addition, since the gas leakage detection pipe 7 must be kept fixed only by the pressure pressed on the sand bag 5 when mortar 6 is poured, the operation pressure becomes uncomfortable because it is not maintained by the pouring pressure. There was a problem.

이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 케이싱에 연결되는 리드선을 구비하지 않고도 케이싱의 방식전위 및 배관과 케이싱 사이의 절연여부를 검지할 수 있게 되고, 케이싱의 개구부 밀폐를 위한 모르타르 타설시 상기 가스누설 검지용 파이프가 견고하게 위치를 유지할 수 있게 됨으로써 작업을 용이하게 진행할 수 있도록 된 매설 가스배관 케이싱의 가스누설 검지용 파이프 설치구조를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, it is possible to detect the anticorrosive potential of the casing and insulation between the pipe and the casing without having a lead wire connected to the casing, for sealing the opening of the casing It is an object of the present invention to provide a pipe installation structure for detecting gas leakage of an embedded gas pipe casing, which allows the gas leakage detecting pipe to be firmly maintained when pouring mortar.

상기와 같은 목적을 달성하기 위한 본 발명은, The present invention for achieving the above object,

배관이 케이싱의 내부를 관통하여 매설되고, 배관과 케이싱은 도복장강관과 러버링에 의해 상호 절연되며, 상기 케이싱의 양측 개구부는 모래포대와 모르타르로 밀폐되고, 상기 케이싱의 내부공간과 지상공간을 연결하는 가스누설 검지용 파이프가 구비된 가스배관 매설구조에 있어서,Pipe is embedded through the inside of the casing, the pipe and the casing is mutually insulated by the coated steel pipe and rubber ring, the openings on both sides of the casing is sealed with sand bags and mortar, and the inner space and the ground space of the casing In the gas pipe buried structure provided with a gas leakage detection pipe to be connected,

상기 케이싱과 상기 가스누설 검지용 파이프가 상호 전기적으로 연결된 것을 특징으로 한다.The casing and the gas leak detection pipe is electrically connected to each other.

상기 케이싱과 상기 가스누설 검지용 파이프에 금속재 지지대가 용접되어 상호 연결 고정된다.A metal support is welded to the casing and the pipe for detecting gas leakage, and is connected to each other.

또한, 상기 케이싱의 상면에 형성된 삽입공에 상기 가스누설 검지용 파이프가 관통 삽입되어 용접된다.In addition, the gas leakage detection pipe is inserted through and welded to the insertion hole formed in the upper surface of the casing.

따라서, 본 발명에 의하면 가스누설 검지용 파이프가 케이싱의 리드선의 역할을 겸하게 됨으로써 케이싱의 리드선이 단선 또는 유실될 경우에도 케이싱의 방식전위와 케이싱과 배관 사이의 절연여부를 측정할 수 있게 되어 배관의 건전성 관리에 보다 유리하게 된다.Therefore, according to the present invention, the gas leakage detecting pipe also serves as a lead wire of the casing, so that even when the casing lead wire is disconnected or lost, the anticorrosive potential of the casing and insulation between the casing and the pipe can be measured. It is more advantageous for health management.

또한, 궁극적으로는 상기 케이싱의 리드선을 설치할 필요가 없게 됨으로써 소요 부품이 감소되는 효과와 이에 따른 작업량의 감소로 전체적인 비용이 절감되는 효과가 있다.Further, ultimately, since the lead wire of the casing does not need to be installed, the required cost is reduced and the overall cost is reduced by the amount of work required.

또한, 20m 미만~ 10m 이상의 길이를 가지는 케이싱에 있어서 리드선의 설치 개수가 증가한 결과를 낳게 되어 가스배관의 건전성 관리에 보다 유리하게 되는 효과가 있다.In addition, in the casing having a length of less than 20m to 10m or more, the number of installation of the lead wires is increased, which is advantageous to the health management of the gas pipe.

이하, 본 발명을 첨부된 예시도면을 참조하여 설명한다.Hereinafter, the present invention will be described with reference to the accompanying drawings.

도 2는 본 발명에 따른 매설 가스배관 케이싱의 가스누설 검지용 파이프 설치구조의 일 실시예로서, 배관(1)은 케이싱(2)을 관통하는 상태로 설치되고, 배관(1)의 외주면에 도복장강관(3)과 러버링(4)이 외삽되어 상기 케이싱(2)과 절연되어 있으며, 케이싱(2)의 개구된 양측 부분이 모래포대(5)와 모르타르(6)로 마감되어 밀폐되는 한편, 가스누설 검지용 파이프(7)가 상기 모래포대(5)와 모르타르(6)를 통하여 케이싱(2)의 내부 공간과 지상의 공간을 연결하도록 된 구성은 동일하다.Figure 2 is an embodiment of the pipe installation structure for detecting the gas leakage of the buried gas pipe casing according to the present invention, the pipe 1 is installed in a state penetrating through the casing (2), it is coated on the outer peripheral surface of the pipe (1) The long steel pipe (3) and the rubber ring (4) are extrapolated to insulate the casing (2), and the open both sides of the casing (2) are closed with sand bags (5) and mortar (6) and sealed. The gas leakage detecting pipe 7 is configured to connect the inner space of the casing 2 with the ground space through the sand bag 5 and the mortar 6.

상기와 같은 종래의 설치구조에 있어서, 본 발명은 상기 케이싱(2)의 상면(외주면 중 상단 부분)과 상기 가스누설 검지용 파이프(7)의 측면이 금속재 지지대(10)로 상호 연결된 것을 특징으로 한다.In the conventional installation structure as described above, the present invention is characterized in that the upper surface (upper part of the outer circumferential surface) of the casing 2 and the side surface of the gas leakage detecting pipe 7 are interconnected by a metal support 10. do.

금속재 지지대(10)의 연결은 금속재 지지대(10)의 양단을 상기 케이싱(2)과 가스누설 검지용 파이프(7)에 각각 용접함으로써 이루어지는 것이 바람직하다.The connection of the metal support 10 is preferably made by welding both ends of the metal support 10 to the casing 2 and the gas leakage detecting pipe 7, respectively.

그 외, 상기 케이싱(2)과 가스누설 검지용 파이프(7)에 각각 마운팅브라켓트를 용접하고, 그 마운팅브라켓트에 상기 금속재 지지대(10)의 양단을 볼트와 너트로 체결할 수도 있다.In addition, the mounting brackets may be welded to the casing 2 and the gas leakage detecting pipe 7, respectively, and both ends of the metal support 10 may be fastened to the mounting brackets with bolts and nuts.

상기와 같이 하면, 금속재 지지대(10)에 의하여 상기 케이싱(2)과 가스누설 검지용 파이프(7)가 상호 전기적으로 연결되어 상기 가스누설 검지용 파이프(7)에 별도의 리드선(종래의 8b)을 설치할 필요 없이 상기 가스누설 검지용 파이프(7)를 리드선으로 활용할 수 있게 된다.As described above, the casing 2 and the gas leakage detecting pipe 7 are electrically connected to each other by a metal support 10 to separate the lead wires (the conventional 8b) to the gas leakage detecting pipe 7. It is possible to utilize the gas leakage detection pipe 7 as a lead wire without having to install.

즉, 상기 가스누설 검지용 파이프(7)가 케이싱(2)에 전기적으로 연결되어 있고, 본래의 목적(가스누설 검지)을 위해 지상으로 돌출되어 있으므로 이를 리드선으로 활용하여 케이싱(2)의 방식전위를 측정하거나 또는 케이싱(2)과 상기 배관(1) 사이의 절연여부를 측정할 수 있게 된다.That is, since the gas leakage detecting pipe 7 is electrically connected to the casing 2 and protrudes to the ground for its original purpose (gas leakage detection), the anticorrosive potential of the casing 2 is utilized as a lead wire. Or measuring the insulation between the casing (2) and the pipe (1).

한편, 상기 금속재 지지대(10)는 상기 가스누설 검지용 파이프(7)를 고정하는 역할을 하게 된다.On the other hand, the metal support 10 serves to fix the gas leakage detection pipe (7).

즉, 모래포대(5)에 가스누설 검지용 파이프(7)의 하측 단부가 눌려져 있고 모르타르(6)는 타설되지 않은 상태에서 상기 금속재 지지대(10)를 먼저 용접 설치 함으로써 상기 가스누설 검지용 파이프(7)의 설치위치가 견고히 유지될 수 있도록 하였다.That is, the lower end of the gas leakage detecting pipe 7 is pressed on the sand bag 5 and the mortar 6 is welded to the metal support 10 before being poured, so that the gas leakage detecting pipe ( The installation position of 7) can be maintained firmly.

이에 따라 모르타르(6) 타설시의 타설 충격에 의해 상기 가스누설 검지용 파이프(7)가 위치 변동되는 현상이 발생하지 않으므로 모르타르 타설 작업을 용이하게 진행할 수 있게 된다. 이후, 흙 되메우기 작업시에도 동일한 작용 효과가 발생한다.As a result, the phenomenon of positional fluctuation of the gas leakage detecting pipe 7 does not occur due to the impact of the pouring at the time of pouring the mortar 6, so that the mortar pouring operation can be easily performed. Thereafter, the same effect occurs when the soil backfilling operation is performed.

한편, 본 발명은 도 3에 도시된 바와 같이 변형 실시될 수 있다.Meanwhile, the present invention may be modified as shown in FIG. 3.

도 3에 도시된 바와 같이 배관(1)과 케이싱(2) 상호 간의 설치구조는 전술한 바와 동일하다.As shown in FIG. 3, the installation structure between the pipe 1 and the casing 2 is the same as described above.

단, 도시된 바와 같이, 도 3의 실시예에서는 가스누설 검지용 파이프(7)가 상기 케이싱(2)의 상면에 직접 관통 설치되는 것에 그 특징이 있다.However, as shown in FIG. 3, the gas leakage detecting pipe 7 is directly penetrated to the upper surface of the casing 2.

즉, 종래 및 전술한 실시예에서와 같이 가스누설 검지용 파이프(7)가 모래포대(5)와 모르타르(6)를 통하여 케이싱(2)의 외부로 연장되는 것이 아니라, 직선형의 가스누설 검지용 파이프(7)의 하단이 상기 케이싱(2)의 상면 양측에 각각 형성된 삽입공(2a)에 관통 삽입되고, 그 삽입 외주면이 상기 케이싱(2)에 필렛 용접(fillet welds)된다.That is, the gas leakage detecting pipe 7 is not extended to the outside of the casing 2 through the sand bag 5 and the mortar 6, as in the conventional and the above-described embodiment, but for the linear gas leakage detection. A lower end of the pipe 7 is inserted through the insertion holes 2a respectively formed on both sides of the upper surface of the casing 2, and the insertion outer circumferential surface thereof is fillet welded to the casing 2.

따라서, 상기 가스누설 검지용 파이프(7)는 케이싱(2)의 내부공간을 지상공간과 연결하여 본연의 목적을 수행할 수 있고, 용접에 의해 케이싱(2)에 견고하게 고정되되 전기적으로도 상호 연결되어 있어서 전술한 실시예와 동일하게 케이싱(2)의 리드선으로 활용되어 케이싱(2)의 방식전위를 측정할 수 있게 되고, 케이싱(2) 과 배관(1) 사이의 절연여부를 측정할 수 있게 된다.Therefore, the gas leakage detecting pipe 7 may perform the main purpose by connecting the inner space of the casing 2 with the ground space, and is firmly fixed to the casing 2 by welding, but also electrically interconnected. As it is connected, it is used as a lead wire of the casing 2 in the same manner as in the above-described embodiment so that the anticorrosive potential of the casing 2 can be measured, and the insulation between the casing 2 and the pipe 1 can be measured. Will be.

또한, 이 실시예에서 상기 가스누설 검지용 파이프(7)는 케이싱(2)의 양단부로부터 인출되는 것이 아니므로 모래포대(5) 적층이나 모르타르(6) 타설 작업에 아무런 영향을 주지 않게 되어 보다 간편하게 모래포대(5)와 모르타르(6)에 의한 케이싱(2) 밀폐 작업을 수행할 수 있게 되고, 흙 되메우기 및 다짐시에는 매립되는 흙에 의한 충격에 견고하게 대응하여 가스누설 검지용 파이프(7)의 고정위치를 안정적으로 유지할 수 있게 된다.In this embodiment, since the gas leakage detecting pipe 7 is not drawn out from both ends of the casing 2, the gas leakage detecting pipe 7 does not affect the sand bag 5 lamination or the mortar 6 laying operation. It is possible to perform the sealing work of the casing (2) by the sand bag (5) and the mortar (6), and the gas leakage detection pipe (7) in response to the impact of the soil to be reclaimed during soil refilling and compaction It is possible to keep the fixed position of stably.

또한, 모래포대(5)와 모르타르(6)가 가스누설 검지용 파이프(7)에 의해 관통되지 않음으로써 되메우기 및 다짐 작업시 취약지점인 가스누설 검지용 파이프(7)와 모르타르(6)의 접촉부위에 크랙, 파손 등이 발생하지 않게 되어 보다 완전한 밀폐가 이루어지게 되며, 이에 따라 외부로부터 케이싱(2) 내부로의 이물질 침투가 완벽하게 방지된다.In addition, since the sand bag 5 and the mortar 6 are not penetrated by the gas leakage detecting pipe 7, the gas leakage detecting pipe 7 and the mortar 6, which are weak points in the backfilling and compacting operation, are contacted with each other. Cracks, breakage, etc. do not occur in the site, thereby making a more complete seal, thereby preventing foreign matter from penetrating into the casing 2 from the outside.

한편, 종래의 케이싱(2)에서 방식전위 측정용 리드선(8b)을 20m 이상에는 2개소를 설치하고 20m 미만에는 1개소만 설치하였었다. 이에 비해 상기 가스누설 검지용 파이프(7)는 10m 이상에는 2개소를 설치하고 10m 미만에는 1개소를 설치하였었다.On the other hand, in the conventional casing 2, two places of the anticorrosive potential measurement lead wire 8b were provided at 20 m or more and only one place was less than 20 m. On the other hand, the gas leakage detecting pipe 7 was installed at two places over 10 m and one place at less than 10 m.

따라서, 본 발명에 의해 상기 가스누설 검지용 파이프(7)가 리드선(8b)의 역할을 대신할 수 있게 됨으로써 20m 미만~ 10m 이상의 케이싱에도 리드선을 2개소 설치한 것과 같은 효과를 갖게 되며, 이로써 매설 가스배관(케이싱 포함)의 건전성 확보에 기여할 수 있게 된다.Therefore, according to the present invention, the gas leakage detecting pipe 7 can replace the role of the lead wire 8b, thereby having the same effect as installing two lead wires in a casing of less than 20 m to 10 m or more, thereby burying It can contribute to securing the integrity of gas piping (including casing).

도 1은 종래 매설 가스배관 케이싱의 가스누설 검지용 파이프 설치구조를 도시한 단면도,1 is a cross-sectional view showing a pipe installation structure for detecting gas leakage of a conventional buried gas pipe casing;

도 2는 본 발명에 따른 매설 가스배관 케이싱의 가스누설 검지용 파이프 설치구조를 도시한 단면도,2 is a cross-sectional view showing a pipe installation structure for detecting the gas leakage of the buried gas pipeline casing according to the present invention;

도 3은 본 발명에 따른 또 다른 실시예를 도시한 단면도이다.3 is a cross-sectional view showing yet another embodiment according to the present invention.

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

1 : 배관 2 : 케이싱1: Piping 2: Casing

2a : 삽입공 3 : 도복장강관2a: Insertion hole 3: coated steel pipe

4 : 러버링 5 : 모래포대4: rubber ring 5: sand bag

6 : 모르타르 7 : 가스누설 검지용 파이프6: mortar 7: gas leak detection pipe

8a,8b : 리드선 9 : 테스트박스8a, 8b: Lead Wire 9: Test Box

10 : 금속재 지지대10: metal support

Claims (3)

배관(1)이 케이싱(2)의 내부를 관통하여 매설되고, 배관(1)과 케이싱(2)은 도복장강관(3)과 러버링(4)에 의해 상호 절연되며, 상기 케이싱(2)의 양측 개구부는 모래포대(5)와 모르타르(5)로 밀폐되고, 상기 케이싱(2)의 내부공간과 지상공간을 연결하는 가스누설 검지용 파이프(7)가 구비된 가스배관 매설구조에 있어서,Pipe 1 is embedded through the inside of the casing (2), the pipe (1) and the casing (2) are insulated from each other by the coated steel pipe (3) and rubber ring (4), the casing (2) In the openings on both sides of the gas bag buried structure is sealed with a sand bag (5) and mortar (5), the gas leakage detection pipe (7) connecting the inner space and the ground space of the casing (2), 상기 케이싱(2)과 상기 가스누설 검지용 파이프(7)가 상호 전기적으로 연결된 것을 특징으로 하는 매설 가스배관 케이싱의 가스누설 검지용 파이프 설치구조.Gas leak detection pipe installation structure of the gas casing (2) characterized in that the casing (2) and the gas leak detection pipe (7) is electrically connected to each other. 청구항 1에 있어서, 상기 케이싱(2)과 상기 가스누설 검지용 파이프(7)에 금속재 지지대(10)가 용접되어 상호 연결 고정된 것을 특징으로 하는 매설 가스배관 케이싱의 가스누설 검지용 파이프 설치구조.The pipe installation structure for detecting gas leakage of an embedded gas pipe casing according to claim 1, wherein a metal support (10) is welded to and fixed to the casing (2) and the gas leakage detecting pipe (7). 청구항 1에 있어서, 상기 케이싱(2)의 상면에 형성된 삽입공(2a)에 상기 가스누설 검지용 파이프(7)가 관통 삽입되어 용접된 것을 특징으로 하는 매설 가스배관 케이싱의 가스누설 검지용 파이프 설치구조.The method of claim 1, wherein the gas leak detection pipe 7 is inserted through the insertion hole (2a) formed on the upper surface of the casing (2) welded, the gas leakage detection pipe installation of the gas casing rescue.
KR1020070067648A 2007-07-05 2007-07-05 Gas leak pipe mounting structure for casing of underground laying gas pipe KR100888392B1 (en)

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