KR101033837B1 - Pipe fittings for underground transmission lines - Google Patents

Pipe fittings for underground transmission lines Download PDF

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Publication number
KR101033837B1
KR101033837B1 KR1020110019185A KR20110019185A KR101033837B1 KR 101033837 B1 KR101033837 B1 KR 101033837B1 KR 1020110019185 A KR1020110019185 A KR 1020110019185A KR 20110019185 A KR20110019185 A KR 20110019185A KR 101033837 B1 KR101033837 B1 KR 101033837B1
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KR
South Korea
Prior art keywords
extension pipe
manhole
ring
pipe
ring nut
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KR1020110019185A
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Korean (ko)
Inventor
엄상영
Original Assignee
(주)하림기술단
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Priority to KR1020110019185A priority Critical patent/KR101033837B1/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole
    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall 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
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/10—Sealing by using sealing rings or sleeves only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H02G3/0616—Joints for connecting tubing to casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor

Abstract

PURPOSE: A conduit line connector for an underground distribution is provided to simultaneously transfer a plurality of wedges by a ring nut located on the left and right sides of an extension pipe. CONSTITUTION: An extension pipe(30) is inserted into a punch hole(21) of a manhole(20). A male nut unit(31,32) formed on the extension pipe is combined with a ring nut(40,50). A watertight packing(41,51) is interposed between the ring nut and the wall(22,23) of the manhole. A gap between the extension pipe and the punch hole is supported by the wedge. An incline groove(61,71) is radially formed on the outer surface of the extension pipe to guide the wedge. The wedge is pressurized by the ring nut in an axial direction. An O-ring(42,52) interposed between the ring nut and the extension pipe is inserted into a packing groove(33,34) on the left and right sides of the extension pipe. A flange(45) is formed on the ring nut inside the manhole.

Description

지중배전용 관로 연결구{Pipe fittings for underground transmission lines}Pipe fittings for underground transmission lines

본 발명은 지중배전용 관로를 맨홀에 신설하기 위해 사용되는 지중배전용 관로 연결구에 관한 것으로, 더욱 상세하게는 쐐기를 안내하기 위한 수단을 갖추어 여러 개의 쐐기를 한꺼번에 이동시킬 수 있도록 함으로써 연장파이프 설치작업을 보다 간편하고 신속하게 할 수 있도록 한 지중배전용 관로 연결구에 관한 것이다.The present invention relates to underground pipeline connections that are used to establish underground pipelines to manholes, and more particularly, by installing a pipe for guiding the wedges to move several wedges at once. It relates to underground pipeline connections that can be made more easily and quickly.

일반적으로 지중배전용 관로 연결구는 맨홀을 통해 새로운 지중관로를 신설하는 경우 맨홀에 형성된 천공홀에 설치되어 관로 연결후 케이블 포설전 폐쇄하는데 이용된다.In general, underground pipeline connection port is installed in the drilling hole formed in the manhole when a new underground pipeline is established through the manhole, and is used to close the cable before the cable installation.

이와 같은 지중배전용 관로 연결구에 관한 종래기술1을 첨부도면 도 1에 도시하였는데, 이에 도시된 바와 같이 맨홀(10)의 안팎으로 관통되게 형성된 천공홀(11)의 내측으로 연장파이프(12)가 삽입되어 있었고, 맨홀(10)의 내측에 위치되는 환형리브(13)가 연장파이프(12)의 외주면 일측에 형성되어 있었으며, 연장파이프(12)의 외주면 타측에 형성된 수나사부(15)에 결합된 링너트(14)가 맨홀(10)의 외측에 위치되도록 구성되어 있었다.As shown in FIG. 1, a related art 1 related to the underground distribution pipe connector is illustrated. As shown in FIG. 1, an extension pipe 12 is formed inside the drilling hole 11 formed to penetrate into and out of the manhole 10. An annular rib 13, which is inserted and positioned inside the manhole 10, is formed at one side of the outer circumferential surface of the extension pipe 12, and is coupled to the male screw part 15 formed at the other side of the outer circumferential surface of the extension pipe 12. The ring nut 14 was configured to be located outside the manhole 10.

또한, 맨홀(10)의 내측벽면(16)과 환형리브(13) 사이, 맨홀(10)의 외측벽면(17)과 링너트(14) 사이에는 각각 수밀패킹(18a)(18b)이 설치되어 있었으며, 맨홀(10)의 내측에 위치된 연장파이프(12)의 일측단에는 플랜지(19)가 형성되어 있었다.In addition, watertight packings 18a and 18b are provided between the inner wall surface 16 of the manhole 10 and the annular rib 13, and between the outer wall surface 17 of the manhole 10 and the ring nut 14, respectively. The flange 19 was formed at one end of the extension pipe 12 located inside the manhole 10.

그러나, 이와 같은 종래기술1은 맨홀(10)에 형성되어 있는 천공홀(11)로 연장파이프(12)를 삽입할 때 천공홀(11)과 연장파이프(12) 사이를 메워주거나 지지할 수 있는 수단을 갖추고 있지 않았기 때문에 연장파이프(12)가 천공홀(11)의 밑으로 처지면서 연장파이프(12)의 중심이 천공홀(11)의 중심으로부터 벗어나 아래쪽으로 편중되는 문제점이 있었다.However, this prior art 1 can fill or support the gap between the drilling hole 11 and the extension pipe 12 when the extension pipe 12 is inserted into the drilling hole 11 formed in the manhole 10. Since there is no means, the extension pipe 12 sags below the drilling hole 11 and the center of the extension pipe 12 is biased downward from the center of the drilling hole 11.

이와 같이 연장파이프(12)와 천공홀(11)의 중심이 일치하지 않게 되며, 누수의 위험이 있게 되며, 외부로부터 전달되는 진동에 의해 연장파이프(12)가 천공홀(11) 내부에서 움직이면서 변형되거나 관로 연결부위가 파손되는 문제점이 있었다.As such, the centers of the extension pipes 12 and the drilling holes 11 do not coincide with each other, there is a risk of leakage, and the extension pipes 12 are deformed while moving inside the drilling holes 11 by vibrations transmitted from the outside. Or there was a problem that the pipe connection is broken.

한편, 종래기술2는 지중배전용 관로 연결구에 관한 다른 기술로서, 첨부도면 도 2에 도시된 바와 같이 맨홀(80)에 형성되어 있는 천공홀(81)로 삽입된 콘형파이프(82)의 바깥쪽 단부에 쐐기(83)를 박아 넣음으로써 콘형파이프(82)의 단부가 움직이지 못하도록 되어 있었으며, 콘형파이프(82)를 천공홀(81)에 고정한 다음 콘형파이프(82)와 천공홀(81) 사이의 틈을 모르타르(84)로 메워서 마감하도록 구성되어 있었다.Meanwhile, the related art 2 is another technology related to underground pipe fittings, and the outer side of the cone-shaped pipe 82 inserted into the drilling hole 81 formed in the manhole 80 as shown in FIG. 2. The end of the cone-shaped pipe 82 was prevented from moving by inserting the wedge 83 at the end, and the cone-shaped pipe 82 was fixed to the drilled hole 81 and then between the cone-shaped pipe 82 and the drilled hole 81. It was configured to fill the gap with mortar (84) to finish.

또한, 맨홀(80)의 내측에 위치된 콘형파이프(82)의 안쪽 단부를 공관로 상태에서 폐쇄하기 위한 엔드플레이트(87)를 체결볼트(86)와 체결너트(85)를 이용해서 콘형파이프(82)에 결합하도록 되어 있었다.In addition, the end plate 87 for closing the inner end of the cone-shaped pipe 82 located inside the manhole 80 in the state of a hollow pipe by using the fastening bolt 86 and the fastening nut 85 is used as a cone-shaped pipe ( 82).

그러나, 위와 같은 종래기술2는 쐐기(83)를 축방향으로 안내하기 위한 수단을 갖추고 있지 않았기 때문에 망치와 같은 타격공구를 이용 쐐기(83)를 박는 과정에서 옆으로 이탈되거나 회전되어 작업이 매우 난해하게 되는 문제점이 있었으며, 특히 여러 개의 쐐기(83)를 개별적으로 박아 넣어야 하기 때문에 작업시간이 크게 지연되는 문제점을 갖고 있었다.However, since the prior art 2 does not have a means for guiding the wedge 83 in the axial direction, the work is very difficult because it is separated or rotated laterally in the process of hitting the wedge 83 using a hammering tool such as a hammer. There was a problem that, in particular, because the several wedges (83) to be driven separately had a problem that the work time is greatly delayed.

또한, 쐐기(83)를 박아 넣기 위해 콘형파이프(82)를 과도하게 경사지게 성형하였기 때문에 신설되는 파이프와의 이음에 어려움이 있었으며, 신설파이프와의 연결에 성공하더라도 그 이음부가 견고하지 않기 때문에 쉽게 파손되는 문제점이 있었다.In addition, since the cone-shaped pipe 82 is excessively inclined to drive the wedge 83, there is a difficulty in connecting with the newly formed pipe, and even if the connection with the newly installed pipe is successful, the joint is not firmly damaged. There was a problem.

본 발명은 상기와 같은 문제점을 해결하기 위하여 이루어진 것으로, 그 목적은 쐐기를 축방향과 반경방향으로 동시에 안내함으로써 연장파이프의 센터링작업을 보다 정확하게 수행할 수 있으며, 여러 개의 쐐기를 한꺼번에 이동시킬 수 있도록 함으로써 공기를 단축시킬 수 있는 지중배전용 관로 연결구를 제공함에 있다.The present invention has been made to solve the above problems, the object of which is to guide the wedge at the same time in the axial direction and radial direction to perform the centering work of the extension pipe more accurately, so as to move several wedges at once The present invention provides a ground pipe connection for shortening the air.

이러한 본 발명의 목적을 달성하기 위하여 쐐기를 안내하기 위한 경사홈을 연장파이프의 외주면 좌우측에 방사형으로 형성하고, 쐐기의 일측 단부를 링너트의 단면을 향해 연장하여 링너트에 의해 쐐기가 축방향으로 가압되도록 하며, 링너트와 연장파이프 사이에 개재되는 오링을 연장파이프의 외주면 좌우측에 형성된 패킹홈에 삽입하고, 양측 링너트 중 맨홀의 내측에 위치된 링너트에 플랜지를 형성하여 지중배전용 관로 연결구가 제공된다.In order to achieve the object of the present invention, the inclined groove for guiding the wedge is formed radially on the left and right sides of the outer circumferential surface of the extension pipe, and one end of the wedge extends toward the cross section of the ring nut so that the wedge is axially oriented by the ring nut. It is pressurized, the O-ring interposed between the ring nut and the extension pipe is inserted into the packing grooves formed on the left and right sides of the outer circumferential surface of the extension pipe, and a flange is formed on the ring nut located inside the manhole among the ring nuts on both sides to connect the underground pipe. Is provided.

이상에서 설명한 바와 같은 본 발명은 연장파이프에 형성된 경사홈에 의해 쐐기를 축방향과 반경방향으로 동시에 안내할 수 있도록 구성되어 있기 때문에 연장파이프의 중심을 천공홀의 중심에 맞추는 센터링작업을 보다 정확하게 수행할 수 있는 효과가 있으며, 더욱이 연장파이프의 좌우측에 위치된 링너트에 의해 복수의 쐐기를 동시에 이동시킬 수 있도록 구성되어 있기 때문에 공사기간을 크게 단축시킬 수 있는 효과가 있다.As described above, the present invention is configured to guide the wedge simultaneously in the axial direction and the radial direction by the inclined groove formed in the extension pipe, so that the centering operation for more precisely centering the center of the extension pipe can be performed. There is an effect that can be, and furthermore, because it is configured to move a plurality of wedges at the same time by the ring nuts located on the left and right sides of the extension pipe has an effect that can significantly shorten the construction period.

도 1은 종래기술1에 따른 지중배전용 관로 연결구를 보인 단면도
도 2는 종래기술2에 따른 지중배전용 관로 연결구를 보인 단면도
도 3은 본 발명에 따른 지중배전용 관로 연결구를 보인 단면도
도 4는 본 발명에 따른 지중배전용 관로 연결구를 보인 분해사시도
도 5는 본 발명에 따른 지중배전용 관로 연결구를 보인 사시도1 is a cross-sectional view showing a pipe connection for underground distribution according to the prior art 1
2 is a cross-sectional view showing a pipe connection for underground distribution according to the prior art 2
Figure 3 is a cross-sectional view showing a pipeline connection for underground distribution according to the present invention
Figure 4 is an exploded perspective view showing a pipeline connection for underground distribution according to the present invention
Figure 5 is a perspective view showing a pipeline connection for underground distribution according to the present invention

이하 본 발명에 따른 실시예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부도면 도 3 내지 도 5에 도시된 바와 같이 맨홀(20)에 형성된 천공홀(21)의 내측으로 연장파이프(30)가 삽입되고, 그 연장파이프(30)에 형성된 수나사부(31)(32)에 링너트(40)(50)가 결합되며, 맨홀(20)의 내외측 벽면(22)(23)과 링너트(40)(50) 사이에 수밀패킹(41)(51)이 개재되고, 연장파이프(30)와 천공홀(21) 사이에 쐐기(60)(70)가 설치되는 통상의 구조를 갖는다.3 to 5, the extension pipe 30 is inserted into the drilling hole 21 formed in the manhole 20, and the male thread portions 31 and 32 formed in the extension pipe 30 are inserted therein. Ring nut 40, 50 is coupled to the water, and the watertight packings 41 and 51 are interposed between the inner and outer wall surfaces 22 and 23 of the manhole 20 and the ring nut 40 and 50. , Wedges 60 and 70 are installed between the extension pipe 30 and the drilling hole 21.

한편, 본 발명은 상기 쐐기(60)(70)를 축방향과 반경방향으로 동시에 안내하기 위한 경사홈(61)(71)을 연장파이프(30)의 외주면 좌우측에 방사형으로 형성하고, 그 쐐기(60)(70)의 일측 단부를 링너트(40)(50)의 단면을 향해 연장하여 링너트(40)(50)에 의해 쐐기(60)(70)가 축방향으로 가압되도록 한다.On the other hand, in the present invention, the inclined grooves 61 and 71 for guiding the wedges 60 and 70 at the same time in the axial direction and the radial direction are formed radially on the left and right sides of the outer circumferential surface of the extension pipe 30, and the wedges ( One end of the 60 and 70 extends toward the end faces of the ring nuts 40 and 50 so that the wedges 60 and 70 are pressed in the axial direction by the ring nuts 40 and 50.

즉, 쐐기(60)(70)는 링너트(40)(50)에 직접 접촉되어 밀리면서 축방향으로도 움직이지만 동시에 경사홈(61)(71)을 따라 미끄러져 천공홀(21)의 내주면을 향해 반경방향으로도 확장되어 연장파이프(30)와 천공홀(21) 사이에 밀착되며, 이때 쐐기(60)(70)는 연장파이프(30)가 천공홀(21)의 중심에 위치되도록 하는 센터링역할을 하게 된다.That is, the wedges 60 and 70 move directly in contact with the ring nuts 40 and 50 and move in the axial direction, but at the same time, they slide along the inclined grooves 61 and 71 to slide the inner circumferential surface of the drilled hole 21. It also extends in the radial direction toward the close contact between the extension pipe 30 and the drilling hole 21, wherein the wedge 60, 70 is such that the extension pipe 30 is located in the center of the drilling hole 21 It will play the role of centering.

또한, 링너트(40)(50)와 연장파이프(30) 사이에 오링(42)(52)을 설치하여 연장파이프(30)와 링너트(40)(50) 사이의 나사결합부 틈을 통한 수분 유입을 차단하도록 하며, 이와 같은 오링(42)(52)은 연장파이프(30)의 외주면 좌우측에 형성된 패킹홈(33)(34)에 삽입하여 링너트(40)(50) 결합시 축방향으로 유동되지 못하도록 한다. In addition, the O-rings 42 and 52 are installed between the ring nuts 40 and 50 and the extension pipe 30, and through the threaded gap between the extension pipe 30 and the ring nut 40 and 50, respectively. The O-rings 42 and 52 are inserted into packing grooves 33 and 34 formed on the left and right sides of the outer circumferential surface of the extension pipe 30 so that the ring nuts 40 and 50 are combined in the axial direction. To prevent flow.

또, 링너트(40)(50)의 내주면에는 연장파이프(30)에 형성된 수나사부(31)(32)와의 결합을 위한 암나사부(47)(57)를 형성하였으며, 맨홀(20)의 외측에 위치된 링너트(50)에는 훅스패너(도시않됨)를 이용한 체결을 위해 훅스패너홈(53)을 형성한다.The inner circumferential surfaces of the ring nuts 40 and 50 are formed with female thread portions 47 and 57 for coupling with the male thread portions 31 and 32 formed in the extension pipe 30, and the outer side of the manhole 20. A ring spanner groove 53 is formed in the ring nut 50 positioned at the hook nut for fastening using a hook spanner (not shown).

그리고, 양측 링너트(40)(50) 중 맨홀(20)의 내측에 위치된 링너트(40)에는 플랜지(45)를 형성하여 엔드플레이트(24)를 장착할 수 있도록 하며, 맨홀(20)의 내측에 위치된 링너트(40)와 엔드플레이트(24)의 결합은 통상의 경우에서와 같이 플랜지(45)와 링너트(40) 사이에 고무판(29)을 개재하며, 엔드플레이트(24)와 고무판(29) 및 플랜지(45)의 외주면에는 중심이 일치되는 “U”자 모양의 체결홈(24g)(29g)(45g)을 복수개 방사상으로 형성하여 엔드플레이트(24)와 고무판(29) 및 플랜지(45)는 체결홈(24g)(29g)(45g)에 삽입되는 육각볼트(25)와 육각너트(27)에 의해 체결되도록 한다.In addition, a flange 45 is formed in the ring nut 40 located inside the manhole 20 among the ring nuts 40 and 50 on both sides so that the end plate 24 can be mounted, and the manhole 20 is provided. The coupling of the ring nut 40 and the end plate 24 located inside of the end plate 24 is provided between the flange 45 and the ring nut 40 via the rubber plate 29 as in the usual case. And the outer circumferential surfaces of the rubber plate 29 and the flange 45, a plurality of radially formed “U” -shaped fastening grooves 24g, 29g, 45g are formed to radially form the end plate 24 and the rubber plate 29. And the flange 45 is fastened by the hexagonal bolt 25 and the hexagonal nut 27 is inserted into the fastening groove (24g) (29g) (45g).

또, 육각볼트(25)의 머리부분과 엔드플레이트(24)의 사이 및 육각너트(27)와 플랜지(45) 사이에는 각각 와셔(26a)(26b)를 개재하여 체결력이 고르게 분포되도록 한다.In addition, between the head of the hexagonal bolt 25 and the end plate 24 and between the hexagonal nut 27 and the flange 45 through the washer 26a, 26b so that the tightening force is evenly distributed.

이하 본 발명에 따른 작용을 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings.

첨부도면 도 3 내지 도 5에 도시된 바와 같이 맨홀(20)에 전력케이블 매설을 위한 새로운 관로를 신설하는 경우 코아드릴과 같은 천공장비를 이용 연장파이프(30)의 직경보다 약간 큰 크기의 천공홀(21)을 맨홀(20)의 안팎으로 관통되도록 천공한 다음 그 천공홀(21)에 연장파이프(30)를 삽입한 후 맨홀(20)의 내측과 외측에서 각각 연장파이프(30)의 외주면에 형성된 경사홈(61)(71)으로 쐐기(60)(70)를 삽입하게 되면, 쐐기(60)(70)가 천공홀(21)의 내주면에 밀착되면서 연장파이프(30)의 중심이 천공홀(21)의 중심과 어느 정도 일치된다.As shown in FIGS. 3 to 5, when a new conduit for laying a power cable is installed in the manhole 20, a drilling hole having a size slightly larger than the diameter of the extension pipe 30 using a drilling tool such as a core drill. Perforations 21 penetrate into and out of the manhole 20, and then, the extension pipe 30 is inserted into the perforation hole 21, and then on the outer circumferential surface of the extension pipe 30 at the inside and the outside of the manhole 20, respectively. When the wedges 60 and 70 are inserted into the formed inclined grooves 61 and 71, the wedges 60 and 70 are in close contact with the inner circumferential surface of the drill hole 21, and the center of the extension pipe 30 is drilled. Somewhat coincident with the center of (21).

위와 같은 상태에서 연장파이프(30)의 양단에 수밀패킹(41)(51)을 끼운 다음 연장파이프(30)의 외주면에 형성된 수나사부(31)(32)에 링너트(40)(50)를 결합하여 돌리게 되면, 맨홀(20) 내외측에 위치된 링너트(40)(50)가 쐐기(60)(70)를 축방향으로 가압하게 되는데, 이때 쐐기(60)(70)가 링너트(40)(50)에 의해 경사홈(61)(71)을 따라 미끄러지면서 축방향으로 이동되는 동시에 반경방향으로도 이동하여 천공홀(21)과 연장파이프(30) 사이를 견고하게 지지하게 되며, 연장파이프(30)의 중심이 천공홀(21)의 중심과 일치된다.In the above state, the watertight packings 41 and 51 are fitted to both ends of the extension pipe 30, and then ring nuts 40 and 50 are formed on the male thread portions 31 and 32 formed on the outer circumferential surface of the extension pipe 30. When combined and turned, the ring nuts 40 and 50 located in and outside the manhole 20 press the wedges 60 and 70 in the axial direction, and the wedges 60 and 70 are ring nuts ( Sliding along the inclined groove (61) (71) by the 40 (50) to move in the axial direction at the same time in the radial direction to firmly support between the drilling hole 21 and the extension pipe (30), The center of the extension pipe 30 coincides with the center of the drilling hole 21.

또한, 링너트(40)(50)에 의해 쐐기(60)(70)가 이동될 때 링너트(40)(50)와 맨홀(20)의 벽면(22)(23) 사이에 위치되어 있는 수밀패킹(41)(51)이 압력을 받아 압축되면서 맨홀(20)과 링너트(40)(50) 사이를 기밀하게 유지하는 작용을 하게 된다.In addition, the watertightness is located between the ring nuts 40 and 50 and the wall surfaces 22 and 23 of the manhole 20 when the wedges 60 and 70 are moved by the ring nuts 40 and 50. As the packings 41 and 51 are compressed under pressure, the packings 41 and 51 serve to maintain the airtightness between the manhole 20 and the ring nut 40 and 50.

또, 링너트(40)(50)가 연장파이프(30)에 형성된 수나사부(31)(32)에 결합될 때 연장파이프(30)에 형성된 패킹홈(33)(34)에 삽입되어 있는 오링(42)(52)이 압축되면서 연장파이프(30)와 링너트(40)(50) 사이의 공간을 기밀하게 유지하여 연장파이프(30)와 링너트(40)(50) 사이로 유입될 수 있는 수분 유입을 차단하게 된다.In addition, when the ring nuts 40 and 50 are coupled to the male screw portions 31 and 32 formed in the extension pipe 30, the O-rings inserted into the packing grooves 33 and 34 formed in the extension pipe 30 are formed. While 42 (52) is compressed, the space between the extension pipe (30) and the ring nut (40, 50) is kept airtight, which can flow between the extension pipe (30) and the ring nut (40) (50). It will block water ingress.

위와 같이 링너트(40)(50)를 돌릴 때 맨홀(20) 바깥쪽에 위치된 링너트(50)는 훅스패너(도시생략)를 링너트(50)에 형성된 훅스패너홈(53)에 결합한 상태에서 돌리게 되면, 손으로 조일 때보다 훨씬 강한 체결력을 얻을 수 있게 되며, 맨홀(20) 안쪽에 위치되어 있는 링너트(40)는 일체로 형성된 플랜지(45)와 체결홈(45g)을 이용해서 회전시키게 되면 강한 체결력을 얻을 수 있게 된다.The ring nut 50 located outside the manhole 20 when the ring nuts 40 and 50 are rotated as described above has a hook spanner (not shown) coupled to the hook spanner groove 53 formed on the ring nut 50. When turned on, it is possible to obtain a much stronger tightening force than when tightening by hand, the ring nut 40 located inside the manhole 20 is rotated using an integrally formed flange 45 and the fastening groove 45g. If you do so, a strong fastening force can be obtained.

한편, 케이블 포설전 공관로 상태인 경우 맨홀(20) 내측에 위치된 연장파이프(30)의 단부를 폐쇄하게 되는데, 이 경우 링너트(40)에 형성된 플랜지(45)와 엔드플레이트(24) 사이에 고무판(29)을 밀착시킨 상태에서 육각볼트(25)와 육각너트(27) 및 와셔(26a)(26b)를 이용해서 조이게 되면, 통상의 경우에서와 같이 수밀 상태로 유지되며, 개방하는 경우에는 육각볼트(25)와 육각너트(27)를 풀어서 고무판(29)과 엔드플레이트(24)를 분리하게 되면, 연장파이프(30)가 개방되어 케이블 포설작업이 가능하게 된다.On the other hand, in the case of the pipe laying state before the cable laying, the end of the extension pipe 30 located inside the manhole 20 is closed, in this case between the flange 45 and the end plate 24 formed on the ring nut 40 When the rubber plate 29 is in close contact with each other, the hexagonal bolt 25, the hexagonal nut 27, and the washers 26a and 26b are tightened to maintain the watertight state as in a normal case. When the rubber bolt 29 and the end plate 24 are separated by loosening the hexagon bolt 25 and the hexagon nut 27, the extension pipe 30 is opened to enable the cable laying operation.

20 : 맨홀 21 : 천공홀
22,23 : 벽면 24 : 엔드플레이트
25 : 육각볼트 26a,26b : 와셔
27 : 육각너트 29 : 고무판
24g,29g,45g : 체결홈 30 : 연장파이프
31,32 : 수나사부 33,34 : 패킹홈
40,50 : 링너트 41,51 : 수밀패킹
42,52 : 오링 45 : 플랜지
47,57 : 암나사부 53 : 훅스패너홈
60,70 : 쐐기 61,71 : 경사홈20: manhole 21: punched hole
22,23: wall 24: end plate
25: hexagon bolt 26a, 26b: washer
27: hexagon nut 29: rubber plate
24g, 29g, 45g: Tightening groove 30: Extension pipe
31,32: Male thread 33,34: Packing groove
40,50: Ring nut 41,51: Watertight packing
42,52: O-ring 45: Flange
47,57: Female thread part 53: Hook spanner groove
60,70: Wedge 61,71: Inclined groove

Claims (1)

맨홀(20)에 형성된 천공홀(21)의 내측으로 연장파이프(30)가 삽입되어 있고, 그 연장파이프(30)에 형성된 수나사부(31)(32)에 링너트(40)(50)가 결합되어 있으며, 맨홀(20)의 내외측 벽면(22)(23)과 링너트(40)(50) 사이에 수밀패킹(41)(51)이 개재되어 있고, 연장파이프(30)와 천공홀(21) 사이를 쐐기(60)(70)로 지지하도록 구성된 지중배전용 관로 연결구에 있어서,
상기 쐐기(60)(70)를 안내하기 위한 경사홈(61)(71)을 상기 연장파이프(30)의 외주면 좌우측에 방사형으로 형성하고, 그 쐐기(60)(70)의 일측 단부를 링너트(40)(50)의 단면을 향해 연장하여 링너트(40)(50)에 의해 쐐기(60)(70)가 축방향으로 가압되도록 하며, 링너트(40)(50)와 연장파이프(30) 사이에 개재되는 오링(42)(52)을 연장파이프(30)의 외주면 좌우측에 형성된 패킹홈(33)(34)에 삽입하고, 양측 링너트(40)(50) 중 맨홀(20)의 내측에 위치된 링너트(40)에 플랜지(45)를 형성하여 구성한 것을 특징으로 하는 지중배전용 관로 연결구.The extension pipe 30 is inserted into the drilling hole 21 formed in the manhole 20, and the ring nuts 40 and 50 are provided in the male thread portions 31 and 32 formed in the extension pipe 30. The watertight packings 41 and 51 are interposed between the inner and outer wall surfaces 22 and 23 and the ring nuts 40 and 50 of the manhole 20, and the extension pipe 30 and the drilling hole are interposed therebetween. In the underground pipe line connector configured to support between the (21) with wedges 60, 70,
The inclined grooves 61 and 71 for guiding the wedges 60 and 70 are radially formed on left and right sides of the outer circumferential surface of the extension pipe 30, and one end of the wedges 60 and 70 is ring nut. The wedges 60 and 70 are pressed in the axial direction by the ring nuts 40 and 50 so as to extend toward the cross sections of the 40 and 50, and the ring nuts 40 and 50 and the extension pipe 30. ) O-rings 42 and 52 interposed between the holes are inserted into the packing grooves 33 and 34 formed on the left and right sides of the outer circumferential surface of the extension pipe 30, and the manholes 20 of the ring nuts 40 and 50 of the Underground pipe fittings, characterized in that formed by forming a flange 45 in the ring nut (40) located on the inside.
KR1020110019185A 2011-03-04 2011-03-04 Pipe fittings for underground transmission lines KR101033837B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101890985B1 (en) * 2016-07-19 2018-08-23 한국기초과학지원연구원 A pipe vacuum feedthrough and a vacuum processing device comprising thereof
KR20210048912A (en) * 2019-10-24 2021-05-04 한국전력공사 Adapter for cable pathway

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11108267A (en) 1997-10-02 1999-04-20 Kubota Corp Pipe joint
JP2000257755A (en) 1999-03-05 2000-09-19 Totaku Kogyo Kk Connector for installing spiral pipe body to wall body
EP1245884A1 (en) 2001-03-26 2002-10-02 Hawle Armaturen GmbH Leadthrough system for a wall

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11108267A (en) 1997-10-02 1999-04-20 Kubota Corp Pipe joint
JP2000257755A (en) 1999-03-05 2000-09-19 Totaku Kogyo Kk Connector for installing spiral pipe body to wall body
EP1245884A1 (en) 2001-03-26 2002-10-02 Hawle Armaturen GmbH Leadthrough system for a wall

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101890985B1 (en) * 2016-07-19 2018-08-23 한국기초과학지원연구원 A pipe vacuum feedthrough and a vacuum processing device comprising thereof
KR20210048912A (en) * 2019-10-24 2021-05-04 한국전력공사 Adapter for cable pathway
KR102366475B1 (en) * 2019-10-24 2022-02-24 한국전력공사 Adapter for cable pathway

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