KR100905430B1 - Manhole expansion joint for insulated double pipe landfill type - Google Patents

Manhole expansion joint for insulated double pipe landfill type Download PDF

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KR100905430B1
KR100905430B1 KR1020070081129A KR20070081129A KR100905430B1 KR 100905430 B1 KR100905430 B1 KR 100905430B1 KR 1020070081129 A KR1020070081129 A KR 1020070081129A KR 20070081129 A KR20070081129 A KR 20070081129A KR 100905430 B1 KR100905430 B1 KR 100905430B1
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South Korea
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manhole
stuffing box
expansion joint
packing
pressure
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KR1020070081129A
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Korean (ko)
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KR20090016849A (en
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안창엽
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조인트유창써멀시스템 주식회사
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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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • 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
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • 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
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

본 발명은 매립형 단열이중관의 맨홀 신축조인트에 관한 것으로,The present invention relates to a manhole expansion joint of a buried insulation double pipe,

맨홀벽체(170)와; 상기 맨홀벽체(170) 내,외부를 관통하는 내관(110)과; 상기 맨홀벽체(170) 내,외부를 관통하여 상기 내관외측에 배관되는 외관(100)과; 상기 외관(100)의 일단부가 연장된 누설방지 스터핑박스(120); 및 상기 스터핑박스(120)에 설치되는 패킹실린더(140)를 포함하며, 상기 외관(100) 외측에 압력게이지(130)를 마련하며, 상기 스터핑박스(120)에 패킹실린더(140)와 기밀부재(148)를, 상기 스터핑박스(120)에 하나의 패킹실린더(140)를 형성하되 복수의 패킹주입공간(144)(145)을 형성하여서 되며, A manhole wall 170; An inner tube 110 penetrating the inside and the outside of the manhole wall 170; An exterior 100 penetrating the inside and the outside of the manhole wall 170 to be piped outside the inner tube; A leakage preventing stuffing box 120 having one end of the exterior 100 extended; And a packing cylinder 140 installed in the stuffing box 120, and providing a pressure gauge 130 outside the exterior 100, and a packing cylinder 140 and an airtight member in the stuffing box 120. 148, one packing cylinder 140 is formed in the stuffing box 120, but a plurality of packing injection spaces 144 and 145 are formed,

맨홀내에서 신축이동하는 내관에 대응하여 스터핑박스에서 누설을 차단하며, 압력게이지를 통하여 누설이 체킹되는 매립형 단열이중관의 맨홀 신축조인트이다.It is a manhole expansion joint of a buried insulated double tube that blocks leakage from the stuffing box in response to the inner pipe that moves in and out of the manhole and checks for leakage through a pressure gauge.

단열이중관,신축조인트,맨홀. Insulated double pipe, expansion joint, manhole.

Description

매립형 단열이중관의 맨홀 신축조인트{Manhole expansion joint for insulated double pipe landfill type}Manhole expansion joint for insulated double pipe landfill type}

본 발명은 지중 매설되는 매립형 단열이중관의 맨홀 신축조인트에 관한 것으The present invention relates to a manhole expansion joint of a buried insulation double pipe buried underground

로, 특히,이중단열관의 진공단열시 진공의 누설여부를 점검하고,차단하기 위한 매립형 단열이중관의 맨홀 신축조인트에 관한 것이다.In particular, the present invention relates to a manhole expansion joint of a buried insulation double tube for checking and blocking the leakage of vacuum during vacuum insulation of a double insulated tube.

매립형 단열이중관은 지중 매설되는 음용수등의 이송용 배관으로 내,외관으로 이루어진 사이에 여러가지 단열재료가 채워진 단열배관이다.Buried type insulation double pipe is a pipe for transporting potable water, which is buried underground, and is a heat insulated pipe filled with various insulating materials between the inside and the outside.

이러한 지중 매설되는 단열배관은 지중 혹은 교각등을 통과하는 경우 지반 침하,교각변동등에 의하여 배관의 연결부가 신축되므로 이를 흡수 완화하기 위하여 여러가지 신축조인트가 강구된다.When the underground pipes are buried under the ground or pier, various expansion joints are made to mitigate the absorption of the pipes due to ground subsidence and pier fluctuation.

매립형 단열이중관에 가하여진 신축조인트가 제안되어 있으며, 유체의 누설을 차단하기 위하여 누설방지수단도 알려져 있다. Flexible joints applied to buried insulated double tubes have been proposed, and leak prevention means are also known to block the leakage of fluid.

한편.이러한 단열이중관의 단열을 위하여 단열공간에 소정압력의 진공을 부여하여 단열효과를 증대하기 위한 진공단열로 이루어진 매립형 단열이중관이 알려져 있다. On the other hand, a buried type insulation double tube is known that is made of a vacuum insulation for increasing the insulation effect by applying a vacuum of a predetermined pressure to the insulation space for the insulation of the insulation double tube.

일반적인 매립형 단열이중관의 신축조인트는 첨부 도면 도 1에서 도시하는 바와 같이,Expansion joint of a general buried insulated double tube is shown in Figure 1,

원통형의 외관(100)과, 상기 외관(100)의 내측에 소정의 간격을 두고 설치되는 내관(110)과, 이 내관(110)의 일단에 연결되는 신축부(150)와, 내관(110)의 소정위치에 일주하면서 설치되는 패킹실린더(140)로 이루어지며, 상기 내관(110)과 외관(100)의 간격을 유지하기 위하여 외관(100)내측에는 앵커가 설치되며, 이 앵커에는 열전달차단용 가스켓이 개재된 상태에서 체결부재로서 체결되며, 외관(100)에는 내관(110)로 부터 연장되는 유체누설 확인구, 패킹실린더(140)에 파우더패킹을 투입하기 위한 투입구와 캡을 형성한 특허 제0493391호의 단열이중관의 신축이음장치로 이루어진다.Cylindrical exterior 100, the inner tube 110 which is installed at a predetermined interval inside the exterior 100, the elastic portion 150 connected to one end of the inner tube 110, the inner tube 110 It is made of a packing cylinder 140 is installed while circumventing at a predetermined position of, the anchor is installed inside the exterior 100 to maintain the interval between the inner tube 110 and the exterior 100, the anchor for heat transfer It is fastened as a fastening member in the state where the gasket is interposed, the exterior 100 has a fluid leakage check opening extending from the inner tube 110, the inlet and the cap for inserting the powder packing to the packing cylinder 140, Consists of expansion joint of insulated double pipes of 0493391.

한편.이러한 단열이중관의 단열재 대신 공간내에 소정압력의 진공을 가할 경우 단열이중관의 신축조인트부분에서 내관 외주면을 접촉하면서 이동하는 스터핑박스와의 사이에서 진공이 누설되는 문제점이 있다.On the other hand, when a vacuum of a predetermined pressure is applied in the space instead of the heat insulating material of the heat insulating double tube, there is a problem in that the vacuum leaks between the stuffing box which moves while contacting the inner circumferential surface of the expansion joint of the heat insulating double tube.

즉, 상기 단열이중관의 신축이음장치가 맨홀벽부분을 경계로 그 내측에서 상기 신축부(150)가 위치하게 되면 sus스틸재의 신축부와 탄소강의 내관을 용접처리하게 되므로 장기간 사용하면 이 용접부분이 파손되는 문제점이 발생한다.That is, when the expansion joint 150 of the insulation double pipe is positioned inside the manhole wall portion, the expansion portion 150 is welded to the expansion portion of the sus steel material and the inner tube of the carbon steel, so that the weld portion is damaged when used for a long time. Problem occurs.

이러한 신축부의 용접부 파손을 방지함과 아울러 신축조인트의 진공 누설이을 맨홀을 통하여 사전에 점검되고 차단됨이 필요로 된다. In addition to preventing damage to the welded portion of the stretchable part, vacuum leakage of the stretch joint needs to be checked and blocked in advance through the manhole.

본 발명은 진공 단열이 가하여진 매립형 단열이중관 신축조인트의 진공상태를 유지관리함에 필요한 맨홀용 신축조인트를 제공하며, 맨홀을 통하여 압력누설을 점검 체킹하고자 하는 데에 그 목적이 있다.The present invention provides an expansion joint for a manhole necessary for maintaining the vacuum state of a buried type insulation double tube expansion joint applied with vacuum insulation, and an object thereof is to check and check pressure leakage through the manhole.

나아가 본 발명은 이러한 진공 압력의 누설을 차단하기 위한 누설방지수단을 제공하는 데에도 그 목적이 있다.Furthermore, an object of the present invention is to provide a leakage preventing means for blocking the leakage of vacuum pressure.

상기한 목적을 달성하기 위한 본 발명 매립형 단열이중관의 맨홀 조인트는,Manhole joint of the present invention buried type insulation double tube for achieving the above object,

맨홀벽체와; 상기 맨홀벽체 내,외부를 관통하는 내관과; 상기 맨홀벽체 내,외부를 관통하여 상기 내관외측에 배관되는 외관과; 상기 외관의 일단부가 연장된 누설방지 스터핑박스; 및 상기 스터핑박스에 설치되는 패킹실린더를 포함하여 맨홀내에서 신축이동하는 내관에 대응하여 스터핑박스에서 누설을 차단하는 매립형 단열이중관의 맨홀 신축조인트로서 달성된다.Manhole walls; An inner tube penetrating the inside and the outside of the manhole wall; An exterior that passes through the inside and the outside of the manhole wall and is piped outside the inner tube; A leakage preventing stuffing box having one end of the appearance extended; And a packing cylinder installed in the stuffing box, and is achieved as a manhole expansion joint of a buried insulated double tube which blocks leakage from the stuffing box in response to an inner pipe that moves in and out of the manhole.

상기한 본 발명 매립형 단열이중관의 맨홀 신축조인트의 상기 외관 외측에 압력게이지를 마련함이 바람직하며, 상기한 본 발명 매립형 단열이중관의 맨홀 신축조인트의 상기 스터핑박스에 패킹실린더와 별도 차단부재을 형성하는 함이 바람직하다.Preferably, a pressure gauge is provided on the outer side of the manhole expansion joint of the buried insulated double tube of the present invention, and a packing cylinder and a separate blocking member are formed in the stuffing box of the manhole expansion joint of the buried insulated double tube of the present invention. desirable.

상기한 본 발명 매립형 단열이중관의 맨홀 신축조인트의 상기 스터핑박스에 하나의 패킹실린더를 형성하되 복수의 패킹주입공간을 형성함이 바람직하다.It is preferable to form one packing cylinder in the stuffing box of the manhole expansion joint of the buried insulation double tube of the present invention as described above, and to form a plurality of packing injection spaces.

이로써 본 발명은 매립형 단열이중관의 맨홀 신축조인트에서 발생되는 진공 압력의 누설상황을 맨홀내에서 체크 가능하게 된다.As a result, the present invention can check the leakage of the vacuum pressure generated in the manhole expansion joint of the buried insulation double tube in the manhole.

또한, 본 발명은 맨홀내에서의 진공누설이 체킹됨과 동시에 맨홀의 벽체를 관통하는 단열이중관의 신축조인트의 진공압력 누설을 패킹물질이 주입되는 패킹실린더로서 차단하게 되어 진공단열관의 진공누설을 보다 효과적으로 차단하게 된다.In addition, the present invention is to check the vacuum leakage in the manhole and at the same time to block the vacuum pressure leakage of the expansion joint of the thermal insulation double pipe through the wall of the manhole as a packing cylinder into which the packing material is injected to prevent vacuum leakage of the vacuum insulation tube It is effectively blocked.

본 발명의 바람직한 실시예를 첨부 도면에 의거 구체적으로 설명하면 다음과 같다.Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부 도면중 도 2는 본 발명이 실시된 맨홀내 구성을 나타내고, 도 3a는 본 발명 매립형 단열이중관의 맨홀 신축조인트의 요부 확대도로서 이 도면들에서 도시하는 바와 같이 크게 내관(110)과, 외관(100)과, 스터핑박스(120)와, 패킹실린더(140)와, 압력게이지(130)와, 맨홀벽체(170)로 이루어진다.Figure 2 of the accompanying drawings shows the configuration of the manhole in which the present invention is implemented, Figure 3a is an enlarged view of the main portion of the manhole expansion joint of the buried insulated double tube of the present invention as shown in these drawings largely the inner tube 110, the appearance 100, a stuffing box 120, a packing cylinder 140, a pressure gauge 130, and a manhole wall 170.

맨홀벽체(170)는 일반적으로 배관상태를 점검하기 위하여 지중에 설치되는 맨홀의 내부 공간(a)을 형성하도록 내,외벽을 경계하는 부분이며, 본 발명에서는 지중 매설된 배관의 압력게이지(130)부분을 포함한 신축조인트부분(A)이 맨홀 내부 공간측에 위치하도록 맨홀벽체(170)에 조인트부분이 관통되어 있다.The manhole wall 170 is generally a portion that borders the inner and outer walls to form the inner space (a) of the manhole installed in the ground to check the pipe state, in the present invention, the pressure gauge 130 of the underground pipes The joint part penetrates through the manhole wall 170 so that the elastic joint part A including the part is located in the manhole inner space side.

관통된 조인트중 외관(100)은 상기 맨홀벽체(170) 내,외부를 관통하여 상기 내관(110)외측에 배관되어 일측은 지중의 흙등에 접촉하는 부분이며, 신축부(150)가 형성되어 있으므로 지반침하등의 여러가지 현상에 대응하여 신축적인 작용을 하는 부분이다. 이 신축부(150)는 벨로우즈등이 실시되며, 흙과의 접촉을 차단하도록 일측이 용접 고정되고 타측은 개방되어 신축이동에 대응하는 커버부재(151)를 형성 한다.Outer part 100 of the penetrated joint penetrates the inner and outer parts of the manhole wall 170 and is piped to the outer side of the inner tube 110 so that one side is in contact with soil in the ground, and the elastic part 150 is formed. It is a part that stretches in response to various phenomena such as ground subsidence. Bellows and the like is carried out, the expansion and contraction unit 150 is welded and fixed on one side and the other side is opened to block the contact with the soil to form a cover member 151 corresponding to the expansion and movement.

이러한 외관(100)은 내관(110)과의 사이에 소정의 진공압력을 수용하는 공간(b)을 형성하며, 맨홀측으로 압력게이지(130)가 설치되고, 그 일측단부로 상기 내관(110)과 밀착 접촉하도록 스터핑박스(120)를 연결하여서 된다.The appearance 100 forms a space (b) for receiving a predetermined vacuum pressure between the inner tube 110, the pressure gauge 130 is installed on the manhole side, and the inner tube 110 and the one end portion thereof. The stuffing box 120 is connected to be in close contact.

스터핑박스(120)는 외관(100)일단부에서 내관(110)외경에 맞추기 위하여 수직벽(부호생략)을 형성하여 연장되며, 기타 타원곡면으로 연결함도 가능하다. 이 스터핑박스(120)의 내저부에는 기밀부재(148)가 밀착 개재되고,후술하는 패킹물질(143)및 이탈방지부재(147)등이 설치된다.The stuffing box 120 extends by forming a vertical wall (not shown) in order to match the outer diameter of the inner tube 110 at one end of the exterior 100, and may be connected to other elliptic surfaces. An airtight member 148 is interposed in close contact with the inner bottom of the stuffing box 120, and a packing material 143 and a separation preventing member 147 described later are installed.

내관(110)은 맨홀벽체(170) 내,외부를 관통하는 외관(100)내측에 설치되며, 그 내부는 이송용 유체가 이송되며, 외측으로 상기 신축이동하는 외관(100)의 스터핑박스120)와 접촉된다.The inner tube 110 is installed inside the manhole wall 170, the exterior 100 penetrating the outside, the inside is a transfer fluid is transferred, the stuffing box 120 of the exterior 100 to move the expansion to the outside Contact with

패킹실린더(140)는 실린더 바디(141)와 주입구(142)로 이루어지고 스터핑박스(120)에 관통되도록 일체로 설치되며, 스터핑박스(120)의 내저면 패킹주입공간(144)에 패킹물질(143)이 공급되도록 설치되며, 주입구(142)를 통하여 패킹물질(143)이 주입된다. 이러한 패킹실린더(140)는 상기 스터핑박스(120)에 외측으로 소정 간격을 두고 적어도 한 개 이상 설치되며, 전술한 바와 같은 신축작용시 스터핑박스(120)와 내관(110) 외주면사이에 틈새로 진공압이 저하됨을 차단하는 패킹물질(143)이 충진되지만 이 패킹물질(143)의 이탈을 방지하도록 그 양측으로 이탈방지부재(147)를 형성한다. The packing cylinder 140 is formed of a cylinder body 141 and an injection hole 142 and is integrally installed to penetrate the stuffing box 120. The packing material 140 is formed in the inner bottom packing injection space 144 of the stuffing box 120. 143 is installed to be supplied, and the packing material 143 is injected through the injection hole 142. The packing cylinder 140 is installed at least one or more at a predetermined interval to the outside of the stuffing box 120, and the gap between the stuffing box 120 and the outer peripheral surface of the inner tube 110 during the expansion and contraction as described above. The packing material 143 is blocked to prevent the pneumatic pressure from being lowered, but the separation preventing member 147 is formed at both sides thereof to prevent the packing material 143 from being separated.

이와 같이 이루어진 본 발명 매립형 단열이중관의 맨홀 신축조인트는 도 3a, 도 3b에서 도시하는 바와 같이 진공단열이 이루어진다.The manhole expansion joint of the buried insulation double tube of the present invention made as described above is vacuum insulated as shown in FIGS. 3A and 3B.

즉, 이러한 진공단열중 외관(100)이 지반침하등으로 신축이 되면 신축부(150)를 형성한 외관(100)의 스터핑박스(120)가 소정길이 신축이동하므로 소정의 진공압력이 가해진 내관(110)과 외관(100)사이의 접촉부분인 스터핑박스(120)의 저면으로 진공압이 누압된다. That is, when the exterior 100 is stretched due to ground subsidence during the vacuum insulation, the stuffing box 120 of the exterior 100 having the expansion and contraction portion 150 is stretched by a predetermined length so that the inner tube to which the predetermined vacuum pressure is applied ( The vacuum pressure is pressurized to the bottom of the stuffing box 120, which is a contact portion between the 110 and the exterior 100.

이러한 누압을 방지하기 위하여 기존에는 전술한 바와 같이 저마찰력을 갖고 지지되는 기밀부재(148)등이 개재되어 있지만 이것만으로는 충분한 차단이 이루어지지 않으므로 이것을 패킹실린더(140)를 통한 패킹물질(143)로서 기밀성있게 차단하게 되는 것이다.In order to prevent such pressure, conventionally there is an airtight member 148, etc., which is supported with a low friction force as described above, but this is not enough blocking is made as this, as a packing material 143 through the packing cylinder 140 It will be blocked confidentially.

즉, 상기 맨홀공간(a)에서 신축이동하는 내관(110)에 대응하여 스터핑박스(120)에서 누설을 차단하도록 이탈방지부재(147)를 개재시키되 그 사이에 패킹물질(143)이 주입되도록 하며, 누압 차단용 기밀부재(148)도 개재되어 누압차단기능이 복합적으로 결합되도록 하여 기밀성을 높일 수 있다.That is, in response to the inner tube 110 that moves in and out of the manhole space (a), the separation preventing member 147 is interposed to block the leakage in the stuffing box 120, and the packing material 143 is injected therebetween. In addition, the pressure-tight blocking member 148 is also interposed, so that the pressure-tight blocking function can be combined to increase the airtightness.

또한, 이러한 기밀부재(148)대신 혹은 그대로 두고 여기에 패킹물질(143)이 두 갈래로 나뉘어 충진되도록 제2패킹주입공간(145)을 형성하고, 이 제2주입공간(145)측으로 연통되는 공급라인(146)을 형성함이 바람직하다.In addition, the second packing injection space 145 is formed so that the packing material 143 is divided into two parts and filled therein instead of the airtight member 148, and the supply is communicated to the second injection space 145 side. It is desirable to form line 146.

즉, 상기 스터핑박스(120)에 하나의 패킹실린더(140)를 형성하되 복수의 제1패킹주입공간(144)과 제2패킹주입공간(145)을 형성하여 패킹물질(143)이 복합형성되게 한다. That is, one packing cylinder 140 is formed in the stuffing box 120, but a plurality of first packing injection spaces 144 and second packing injection spaces 145 are formed to form a packing material 143. do.

이와 같이 구성된 본 발명 매립형 단열이중관의 맨홀 신축조인트는 통상적으로 내,외관(110)(100)사이의 진공상태를 체크하기 위하여 압력게이지(130)를 연결 함이 가능하지만 내,외관사이의 신축조인트(150)가 구현된 경우 진공공간(b)의 압력이 스터핑박스(120)사이의 틈새로 누설되는 진공압력으로 인하여 압력이 낮아지므로 이를 보고 진공압력의 누설 정도를 검출가능하게 된다.The manhole expansion joint of the buried insulation double tube of the present invention configured as described above is typically capable of connecting the pressure gauge 130 to check the vacuum state between the inner and outer tubes 110 and 100, but the expansion joint between the inner and outer tubes. When the 150 is implemented, the pressure is lowered due to the vacuum pressure leaking into the gap between the stuffing boxes 120 and the pressure in the vacuum space b, so that the degree of leakage of the vacuum pressure can be detected.

압력게이지의 압력이 낮아지면 관리자는 맨홀내 패킹실린더를 통하여 패킹물질을 보충 주입하여 스터핑박스와 내관사이에 발생된 틈을 통한 진공의 누설을 차단하게 된다.When the pressure gauge is lowered, the manager replenishes the packing material through the packing cylinder in the manhole to block the leakage of vacuum through the gap generated between the stuffing box and the inner tube.

한편, 본 발명은 이러한 압력게이지(130)외에 압력의 저하를 검출하는 압력센서(181)를 구비하고, 그에 따라 신호 작동하는 경보장치(180)를 더 구비하여 외부로 압력의 급격한 감소를 경보하게 할 수 있다.On the other hand, the present invention is provided with a pressure sensor 181 for detecting a drop in pressure in addition to the pressure gauge 130, and further provided with an alarm device for operating a signal accordingly to alarm the sudden decrease in pressure to the outside can do.

또한, 본 발명은 패킹실린더(140)의 구조를 변경하여 주입되는 패킹물질을 실린더 바디외측에 보조주입구를 형성하여 예비패킹물질이 주입된 상태로 설치하여 패킹물질의 소모에 따른 누압시 자동적으로 충진하도록 하는 여러 가지 패킹물질의 주입구조를 변경하여 실시함도 가능하다.In addition, the present invention is to change the structure of the packing cylinder 140 to form a secondary injection hole in the packing material injected outside the cylinder body to be installed in a state in which the pre-packing material is injected to fill automatically when the pressure of the packing material It is also possible to change the injection structure of various packing materials.

도 1은 종래 알려진 매립형 단열이중관의 신축조인트의 단면도이고,1 is a cross-sectional view of a expansion joint of a conventional buried insulated double tube,

도 2는 본 발명 매립형 단열이중관의 신축조인트가 실시된 맨홀의 단면도이고,2 is a cross-sectional view of a manhole to which the expansion joint of the present invention buried insulation double tube is applied;

도 3a,3b는 본 발명 매립형 단열이중관의 맨홀 신축조인트의 제1,제2실시예의 단면도들이고,3a and 3b are cross-sectional views of the first and second embodiments of the manhole expansion joint of the buried insulation double tube of the present invention,

도 4는 본 발명 매립형 단열이중관의 맨홀 신축조인트의 다른 실시예의 단면도이다.Figure 4 is a cross-sectional view of another embodiment of the manhole expansion joint of the buried insulated double tube of the present invention.

Claims (7)

삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 맨홀벽체(170) 내,외부를 관통하는 내관(110)과, 상기 맨홀벽체(170) 내,외부를 관통하여 상기 내관(110)외측에 배관되는 외관(100)과, 상기 외관(100)의 일단부에 연장 설치되어 상기 내관(110) 외주면과 접촉하는 스터핑박스(120)를 형성하여 내관(110) 신축에 따라 진공단열공간(b)의 압력누설을 차단함과 아울러 맨홀벽체(170) 내부의 외관(100)에 형성되는 압력게이지(130)로서 누설압력을 표시하는 매립형 단열이중관의 맨홀 신축조인트에 있어서,The inner tube 110 penetrating the inside and the outside of the manhole wall 170, the exterior 100 penetrating the inside and the outside of the manhole wall 170 and the outside pipe 110, and the exterior 100 It is installed at one end and forms a stuffing box 120 in contact with the outer circumferential surface of the inner tube 110 to block pressure leakage in the vacuum insulation space b according to the expansion and contraction of the inner tube 110 and inside the manhole wall 170. In the manhole expansion joint of a buried insulated double tube which shows a leakage pressure as a pressure gauge 130 formed in the appearance 100 of 상기 스터핑박스(120)에 패킹실린더(140)를 형성하되, 이 스터핑박스(120)의 저면에는 제1패킹주입공간(144)과, 제2패킹주입공간(145)을 형성하고, 이 제1,제2패킹주입공간(144)(145)사이에는 상기 패킹실린더(140)의 패킹물질이 동시에 공급되도록 상기 스터핑박스(120)의 내부를 통하여 공급라인(146)을 형성하는 것을 특징으로 하는 매립형 단열이중관의 맨홀 신축조인트. A packing cylinder 140 is formed in the stuffing box 120, and a first packing injection space 144 and a second packing injection space 145 are formed on a bottom surface of the stuffing box 120. A buried type is formed between the second packing injection spaces 144 and 145 to form a supply line 146 through the inside of the stuffing box 120 to simultaneously supply the packing material of the packing cylinder 140. Manhole expansion joint of insulated double pipe. 제 6항에 있어서,The method of claim 6, 상기 압력게이지(130)에 압력의 저하 정도에 따라 신호전류가 발생되는 압력센서(181)로서 경보되는 경보장치(180)를 더 구비하는 것을 특징으로 하는 매립형 단열이중관의 맨홀 신축조인트.The manhole expansion joint of the buried insulated double pipe further comprises an alarm device 180 which is alarmed as a pressure sensor 181 in which the signal current is generated in accordance with the degree of pressure drop in the pressure gauge 130.
KR1020070081129A 2007-08-13 2007-08-13 Manhole expansion joint for insulated double pipe landfill type KR100905430B1 (en)

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KR101419893B1 (en) 2012-09-18 2014-08-13 주식회사 아이비엔에스 Automatic leakage detection system for insulated double pipe

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KR101675874B1 (en) * 2015-06-12 2016-11-14 강준우 Vaccum antifreezing water supply device

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KR19980025574U (en) * 1996-11-05 1998-08-05 김종진 Pressure gauge with vibration absorbing means
KR200325611Y1 (en) * 2003-06-04 2003-09-06 한국조인트(주) A pipe joint with a filter

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Publication number Priority date Publication date Assignee Title
KR19980025574U (en) * 1996-11-05 1998-08-05 김종진 Pressure gauge with vibration absorbing means
KR200325611Y1 (en) * 2003-06-04 2003-09-06 한국조인트(주) A pipe joint with a filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101419893B1 (en) 2012-09-18 2014-08-13 주식회사 아이비엔에스 Automatic leakage detection system for insulated double pipe

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