KR100729827B1 - Water pipe - Google Patents

Water pipe Download PDF

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Publication number
KR100729827B1
KR100729827B1 KR1020070037474A KR20070037474A KR100729827B1 KR 100729827 B1 KR100729827 B1 KR 100729827B1 KR 1020070037474 A KR1020070037474 A KR 1020070037474A KR 20070037474 A KR20070037474 A KR 20070037474A KR 100729827 B1 KR100729827 B1 KR 100729827B1
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South Korea
Prior art keywords
pipe
valve
branch pipe
water
branch
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KR1020070037474A
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Korean (ko)
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한규영
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(주)도우기술협력회
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Priority to KR1020070037474A priority Critical patent/KR100729827B1/en
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Publication of KR100729827B1 publication Critical patent/KR100729827B1/en

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/04—Column hydrants
    • 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
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

A water supply pipe having a branch pipe attached with an operating valve is provided to prevent the formation of dead water in a branch pipe by draining off tap water in a branch pipe to a main pipe using pressure difference. The water supply pipe having a branch pipe attached with an operating valve comprises a main pipe(1), a branch pipe(2) connected to the main pipe, an operating valve(10) placed in the branch pipe and composed of a valve body, a valve stem(10b) connected to a drain outlet(2a) of the branch pipe and extended to the upper side of the branch pipe and a handle(10c) placed on the top of the valve stem, a venturi pipe(20) installed to the inside of the main pipe and provided with a through hole(21) to penetrate the inner and outer circumferential surfaces of a narrow diameter part(D) of the venturi pipe, a drainpipe(30) extended to the inside of a dead water formation unit of the branch pipe and connected to the through hole of the venturi pipe, and an auxiliary valve(40) placed on the drainpipe to control the flow of water flowing in the drainpipe and composed of a valve body(41) having a waterway(41a) connected to the middle of the drainpipe and a valve seat(41b) formed in the middle of the water way, a valve body(42) put on the valve seat to cut off the waterway and a valve stem(43) connected to the valve body and extended to the upper part of the valve body.

Description

개폐밸브가 장착된 지관을 갖춘 상수관{Water pipe} Water pipes with branch pipes with on / off valves {Water pipe}

도 1은 종래의 상수관을 도시한 구성도,1 is a block diagram showing a conventional water pipe,

도 2는 본 발명에 따른 상수관을 도시한 측단면도,Figure 2 is a side sectional view showing a water pipe according to the present invention,

도 3은 본 발명에 따른 상수관의 기어박스를 도시한 평단면도,3 is a plan sectional view showing a gearbox of a water pipe according to the present invention;

도 4는 본 발명에 따른 상수관의 작동상태를 도시한 참고도이다.4 is a reference diagram showing an operating state of the water pipe according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1; 주관, 2; 지관,One; Subjective, 2; chanter,

10; 개폐밸브, 20; 벤츄리관체,10; On-off valve, 20; Venturi Tube,

30; 배수관, 40; 보조밸브,30; Drainpipe, 40; Auxiliary valve,

50; 기어박스.50; Gearbox.

본 발명은 소방호스 등이 연결되는 지관의 내부의 물이 흐르지 않고 정체되 어 변질되는 것을 방지할 수 있도록 된 상수관에 관한 것이다.The present invention relates to a water pipe that can prevent the water inside the branch pipe to which the fire hose and the like is connected to stagnate and prevent deterioration.

일반적으로, 수돗물을 공급하는 상수관은 도 1에 도시한 바와 같이, 주관(1)과, 이 주관(1)에 비해 작은 지름으로 이루어져 주관(1)에 연결되는 지관(2)으로 구성되며, 이 지관(10)의 배수구(2a)에는 소방호스 등이 연결된다. 이때, 지관(2)의 단부 개폐밸브(10)가 구비되어, 지관(2)의 단부에 소방호스 등을 연결한 후, 개폐밸브(10)를 열어 사용할 수 있다.In general, the water supply pipe for supplying tap water is composed of a main pipe 1 and a branch pipe 2 connected to the main pipe 1 having a smaller diameter than the main pipe 1, as shown in FIG. A fire hose and the like are connected to the drain port 2a of the branch pipe 10. At this time, the end opening / closing valve 10 of the branch pipe 2 is provided, and after connecting a fire hose or the like to the end of the branch pipe 2, the opening / closing valve 10 can be opened and used.

한편, 이러한 지관(2)은 주변에 화재가 발생되지 않으면, 길게는 몇 년 동안 사용하지 않게 되므로, 지관(2) 내부의 물은 오랜시간동안 흐르지 않게 되고 정체된다. 따라서, 지관(2)내부의 물이 변질되는 사수가 발생되며, 이와같이 발생된 사수에 의해 주관(1)을 흐르는 물이 오염되거나 소방호스의 사용시 변질된 물이 분출되어 주변을 오염시킬 수 있는 문제점이 발생되었다.On the other hand, since the branch pipe 2 is not used for a long time unless a fire occurs in the surroundings, the water inside the branch pipe 2 does not flow for a long time and stagnates. Therefore, a shooter is produced in which the water inside the branch pipe 2 is deteriorated, and the water flowing through the main pipe 1 is contaminated by the shooter generated in this way, or the deteriorated water is ejected when the fire hose is used to contaminate the surroundings. This occurred.

본 발명은 상기의 문제점을 해결하기 위한 것으로서, 소방호스 등이 연결되는 지관의 내부에 오랫동안 물이 정체되어 사수가 발생되는 것을 방지할 수 있는 상수관을 제공함에 그 목적이 있다.The present invention is to solve the above problems, it is an object of the present invention to provide a water pipe that can prevent the water is stagnated for a long time inside the branch pipe to which the fire hose is connected.

상기한 목적을 달성하기 위한 본 발명은, 주관(1)과; 이 주관(1)에 연결된 지관(2)과, 지관(2)에 구비된 개폐밸브(10)로 이루어져, 지관(2)에 소방호스 등을 연결할 수 있도록 된 상수도관에 있어서, 양단이 개방된 통형상으로 구성되며 길이방향 중앙부로 갈수록 내경이 좁아지지록 구성되고 가장 내경이 좁은 협경부(D)에는 내외주면을 관통하는 통공(21)이 형성되어 외주면이 주관(1)의 내주면에 밀착되도록 설치되는 벤츄리관체(20)와; 선단부는 지관(2)의 사수발생부 내부로 연장되고 기단부는 벤츄리관체(20)의 통공(21)에 연결되는 배수관(30)과; 배수관(30)에 구비되어 배수관(30)을 흐르는 물의 흐름을 제어하는 보조밸브(40)를 포함하며, 보조밸브(40)는 소화전(10)의 개폐밸브(10)와 연결되어 개폐밸브(10)와 상호 반대로 연동하는 것을 특징으로 하는 구조로 되어있다.The present invention for achieving the above object, the main pipe (1); In the water supply pipe which consists of the branch pipe 2 connected to the main pipe 1, and the opening / closing valve 10 provided in the branch pipe 2, it is possible to connect a fire hose to the branch pipe 2, and both ends are opened. Consisting of a cylindrical shape, the inner diameter is narrowed toward the central portion in the longitudinal direction, and the narrowest diameter portion (D) having the narrowest inner diameter is formed with a through hole 21 penetrating the inner and outer circumferential surfaces so that the outer circumferential surface is in close contact with the inner circumferential surface of the main pipe 1. Venturi tube 20 is installed; A tip end portion extends into the shooter generating portion of the branch pipe 2 and a base end portion is connected to a through hole 21 of the venturi tube body 20; It is provided in the drain pipe 30 includes an auxiliary valve 40 for controlling the flow of water flowing through the drain pipe 30, the auxiliary valve 40 is connected to the on-off valve 10 of the fire hydrant 10 is opened and closed valve 10 ) And mutually opposite to each other.

이하, 본 발명을 첨부된 예시도면에 의거하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 2 및도 3에 의하면, 본 발명에 따른 상수관은, 주관(1)과; 이 주관(1)에 연결된 지관(2)과, 지관(2)에 구비된 개폐밸브(10)로 이루어져, 지관(2)의 배수구(2a)에 소방호스 등을 연결할 수 있도록 된 것은 종래와 동일하다. 이때, 상기 개폐밸브(10)는 밸브체(10a)와, 이 밸브체(10a)에 연결되어 지관(2) 상측으로 연장된 밸브스템(10b)과, 이 밸브스템(10b)의 상단에 구비된 핸들(10c)로 구성되어, 핸들(10c)을 돌리면, 이 핸들(10c)에 연결된 밸브스템(10b)이 회전되어 밸브체(10a)를 승강시켜 지관(2)의 배수구(2a)를 개폐할 수 있도록 구성된다.2 and 3, the water pipe according to the present invention, the main pipe (1); It consists of the branch pipe 2 connected to the main pipe 1, and the on-off valve 10 provided in the branch pipe 2, the fire hose can be connected to the drain port 2a of the branch pipe 2 as in the prior art Do. At this time, the on-off valve 10 is provided with a valve body 10a, a valve stem 10b connected to the valve body 10a and extending above the branch pipe 2, and on the upper end of the valve stem 10b. When the handle 10c is turned, the valve stem 10b connected to the handle 10c is rotated to raise and lower the valve body 10a to open and close the drain port 2a of the branch pipe 2. Configured to do so.

그리고, 이 상수관에는 주관(1)의 내부에 설치되며 중간부에는 내외주면을 관통하는 통공(21)이 형성된 벤츄리관체(20)와, 선단부는 지관(2)의 사수발생부 내 부로 연장되고 기단부는 벤츄리관체(20)의 통공(21)에 연결되는 배수관(30)과, 배수관(30)에 구비되어 배수관(30)을 흐르는 물의 흐름을 제어하며 개폐밸브(10)에 연결되는 보조밸브(40)가 구비된다.In addition, the water pipe is installed inside the main pipe (1), the venturi tube body 20 having a through-hole 21 penetrating the inner and outer circumferential surface in the middle portion, and the tip portion extends into the shooter generating portion of the branch pipe (2) The proximal end is provided with a drain pipe 30 connected to the through-hole 21 of the venturi pipe body 20, and an auxiliary valve connected to the open / close valve 10 to control the flow of water flowing through the drain pipe 30. 40).

상기 벤츄리관체(20)는 양단이 개방된 통형상으로 구성되어 외주면이 주관(1)의 내주면에 밀착되도록 설치되는 것으로, 내부지름은 양단에서 길이방향 중앙부로 갈수록 좁아지지록 구성된다. 따라서, 주관(1)을 통과하는 수돗물이 이 벤츄리관체(20)의 내부를 통과하게 되며, 이 벤츄리관체(20)의 내경이 점점 좁아짐에 따라 수돗물의 속도가 점점 빨라지면서 압력이 낮아지게 된다. 이때, 벤츄리관체(20)의 내주면 중에서 내경이 가장 좁아지는 협경부(D)에서 수돗물의 압력이 가장 낮아지게 된다.The venturi tube body 20 is formed in a cylindrical shape with both ends open so that the outer circumferential surface is in close contact with the inner circumferential surface of the main pipe 1, and the inner diameter is configured to become narrower from the both ends toward the longitudinal center portion. Therefore, the tap water passing through the main pipe 1 passes through the inside of the venturi tube 20, and as the inner diameter of the venturi tube 20 becomes narrower, the pressure of the tap water becomes faster and the pressure is lowered. At this time, the pressure of the tap water is the lowest in the narrower portion (D) that the inner diameter is narrowest among the inner peripheral surface of the venturi tube 20.

그리고, 상기 통공(21)은 벤츄리관체(20) 협경부(D)의 내주면과 외주면을 관통하도록 형성된다. In addition, the through hole 21 is formed to penetrate the inner circumferential surface and the outer circumferential surface of the narrow diameter portion D of the venturi tube body 20.

상기 배수관(30)은 지관(2)에 비해 지름이 작은 파이프로 구성되며, 선단부는 지관(2)의 둘레면을 관통하여 지관(2)의 내부로 연장된다. 이때, 이 배수관(30)의 선단부는 지관(2) 내부에서 사수가 발생되는 사수발생부, 즉, 지관(2)의 단부에 최대한 가깝게 위치되도록 설치된다.The drain pipe 30 is composed of a pipe having a diameter smaller than that of the branch pipe 2, and the front end portion penetrates the circumferential surface of the branch pipe 2 and extends into the branch pipe 2. At this time, the tip portion of the drain pipe 30 is installed to be as close as possible to the shooter generating portion, that is, the branch of the branch pipe (2) in which the shooter is generated inside the branch pipe (2).

상기 보조밸브(40)는 배수관(30)의 중간에 연결되는 수로(41a)가 구비되며 수로(41a)의 중간부에는 밸브시트(41b)가 구비된 밸브바디(41)와, 밸브시트(41b)에 안착되며 승강에 따라 밸브내부의 수로(41a)를 차단하는 밸브체(42)와, 이 밸브체(42)에 연결되며 밸브바디(41)의 상측으로 연장된 밸브스템(43)으로 구성되며, 이 밸브스템(43)은 기어박스(50)에 의해 개폐밸브(10)의 밸브스템(10b)에 연결된다. The auxiliary valve 40 is provided with a channel 41a connected to the middle of the drain pipe 30, and a valve body 41 having a valve seat 41b at the middle of the channel 41a, and a valve seat 41b. The valve body 42 is seated on the valve body and shuts off the water channel 41a inside the valve according to the lift, and the valve stem 43 connected to the valve body 42 and extending upward of the valve body 41. The valve stem 43 is connected to the valve stem 10b of the on / off valve 10 by the gearbox 50.

이때, 개폐밸브(10)와 보조밸브(40)는 밸브스템(10b,43)을 같은 방향으로 회전시켜 열거나 닫을 수 있도록 구성되는 한편, 밸브스템(10b,43)이 회전되면 밸브체(10a,42)가 승강되어 밸브를 개폐하도록 구성된다.At this time, the on-off valve 10 and the auxiliary valve 40 are configured to open or close the valve stem 10b, 43 by rotating in the same direction, while the valve body 10a is rotated when the valve stem 10b, 43 is rotated. 42 is raised and lowered to open and close the valve.

상기 기어박스(50)는 도 3에 도시한 바와 같이, 지관(2)의 개폐밸브(10)와 배수관(30)의 보조밸브(40)를 상호 반대로 연동되도록 연결한다. 즉, 상기 기어박스(50)는 개폐밸브(10)의 밸브스템(10b)에 결합되는 구동기어(51)와, 보조밸브(40)의 밸브스템(43)에 결합되며 구동기어(51)와 치합되는 피동기어(52)와, 이 구동기어(51) 및 피동기어(52)를 감싸는 하우징(53)으로 구성되어, 개폐밸브(10)와 보조밸브(40)의 밸브스템(10b,43)이 상호 반대방향으로 회전되도록 한다.As shown in FIG. 3, the gear box 50 connects the on / off valve 10 of the branch pipe 2 and the auxiliary valve 40 of the drain pipe 30 to be interlocked with each other. That is, the gearbox 50 is coupled to the drive gear 51 coupled to the valve stem 10b of the on-off valve 10, the valve stem 43 of the auxiliary valve 40, and the drive gear 51. Composed of a driven gear 52 to be engaged, a housing 53 surrounding the drive gear 51 and the driven gear 52, the valve stem (10b, 43) of the on-off valve 10 and the auxiliary valve 40 Let them rotate in opposite directions.

따라서, 지관(2)의 개폐밸브(10)를 열면, 배수관(30)의 보조밸브(40)는 닫히게 되며, 개폐밸브(10)를 잠그면 보조밸브(40)는 열리게 된다.Therefore, when opening and closing the valve 10 of the branch pipe (2), the auxiliary valve 40 of the drain pipe 30 is closed, and when the closing valve 10 is closed, the auxiliary valve 40 is opened.

설명하지 않은 도면번호 60은 보조밸브(40)의 밸브스템(43)을 회전가능하게 지지하는 브라켓을 도시한 것이다.Reference numeral 60, which is not described, shows a bracket for rotatably supporting the valve stem 43 of the auxiliary valve 40.

이와같이 구성된 상수관의 작용을 설명하면 다음과 같다.The operation of the water pipe constructed as described above is as follows.

우선, 주관(1)을 통해 고압의 수돗물이 공급되어 흐르게 되면, 주관(1)과 지관(2) 내부에 전체적으로 균일한 수압이 작용된다. 그리고, 이 수돗물이 벤츄리관체(20)의 내부를 통과하면 벤츄리관체(20)의 협경부(D)의 압력만이 낮아지게 되며, 이에따라, 도 4의 (a)와 같이, 개폐빌브(10)는 잠기고, 보조밸브(40)가 열린 상태에서는, 지관(2)의 사수발생부에 정체되어있던 수돗물이 배수관(30)을 통해 벤츄리관체(20)의 통공(21)으로 배수된다. First, when high-pressure tap water is supplied and flows through the main pipe 1, a uniform water pressure is applied to the main pipe 1 and the branch pipe 2 as a whole. Then, when the tap water passes through the inside of the venturi tube 20, only the pressure of the narrower portion D of the venturi tube 20 is lowered. Accordingly, as shown in FIG. In the state in which the auxiliary valve 40 is opened, the tap water stagnated in the catcher generating portion of the branch pipe 2 is drained to the through-hole 21 of the venturi pipe body 20 through the drain pipe 30.

그리고, 지관(2)의 배수구(2a)에 소방호수 등을 연결한 후, 개폐밸브(10)를 열면, 도 4의 (b)와 같이, 배수구(2a)가 개방되어 지관(2) 내부의 물이 소방호스를 통해 분출됨과 동시에, 배수관(30)의 보조밸브(40)가 닫혀 배수관(30)이 잠기게 된다.Then, after connecting the fire-fighting water or the like to the drain 2a of the branch 2, the opening / closing valve 10 is opened. As shown in FIG. 4 (b), the drain 2a is opened and the inside of the branch 2 is opened. At the same time water is discharged through the fire hose, the auxiliary valve 40 of the drain pipe 30 is closed to drain the drain pipe (30).

이와같이 구성된 상수관은 벤츄리관체(20)에 의해 발생되는 압력저하를 이용하여 지관(2)의 내부의 수돗물을 흡입하여 주관(1)으로 배수하므로, 지관(2)내부에 수돗물이 정체되어 변질되는 사수가 발생되지 않게 되는 장점이 있다.The water pipe configured as described above uses the pressure drop generated by the venturi pipe body 20 to suck tap water inside the branch pipe 2 and drain it to the main pipe 1, so that the tap water is stagnated and deteriorated inside the branch pipe 2. There is an advantage that the shooter does not occur.

또한, 지관(2)의 배수구(2a)를 통해 수돗물을 배출할 때는 배수관(30)의 보조밸브(40)가 닫혀서 지관(2)내부의 수돗물이 배수관(30)을 통해 배수되는 것을 막는다. 따라서, 배수관(30)을 통해 수돗물이 배수되어 지관(2)내부의 수압이 낮아지는 것을 막으므로써, 수돗물이 배수구(2a)를 통해 더욱 강한 압력으로 분출될 수 있도록 하는 장점이 있다.In addition, when the tap water is discharged through the drain 2a of the branch pipe 2, the auxiliary valve 40 of the drain pipe 30 is closed to prevent the tap water inside the branch pipe 2 from being drained through the drain pipe 30. Therefore, the tap water is drained through the drain pipe 30, thereby preventing the water pressure inside the branch pipe 2 from being lowered, so that the tap water can be ejected at a stronger pressure through the drain port 2a.

이상에서와 같이 본 발명에 따른 상수관은 주관(1)의 내부에 벤츄리관체(20)를 설치하고, 배수관(30)을 이용하여 지관(2)과 벤츄리관체(20)를 연결하여, 벤츄 리관체(20)를 통과하는 수돗물에 발생되는 압력차이를 이용하여, 지관(2) 내부의 수돗물을 주관(1)으로 배수하도록 하므로써, 소화전(10) 등에 연결되는 지관(2)의 내부에 오랫동안 물이 정체되어 사수가 발생되는 것을 방지할 수 있는 장점이 있다.As described above, in the water pipe according to the present invention, the venturi pipe body 20 is installed inside the main pipe 1, and the branch pipe 2 and the venturi pipe body 20 are connected by using the drain pipe 30 to venturi. By using the pressure difference generated in the tap water passing through the pipe body 20, the tap water inside the branch pipe 2 is drained to the main pipe 1, so that the water inside the branch pipe 2 connected to the fire hydrant 10 or the like for a long time. This stagnation has the advantage of preventing shooters from occurring.

Claims (1)

주관(1)과; 이 주관(1)에 연결된 지관(2)과, 지관(2)에 구비된 개폐밸브(10)로 이루어져, 지관(2)에 소방호스 등을 연결할 수 있도록 된 상수도관에 있어서, 양단이 개방된 통형상으로 구성되며 길이방향 중앙부로 갈수록 내경이 좁아지지록 구성되고 가장 내경이 좁은 협경부(D)에는 내외주면을 관통하는 통공(21)이 형성되어 외주면이 주관(1)의 내주면에 밀착되도록 설치되는 벤츄리관체(20)와; 선단부는 지관(2)의 사수발생부 내부로 연장되고 기단부는 벤츄리관체(20)의 통공(21)에 연결되는 배수관(30)과; 배수관(30)에 구비되어 배수관(30)을 흐르는 물의 흐름을 제어하는 보조밸브(40)를 포함하며, 보조밸브(40)는 소화전(10)의 개폐밸브(10)와 연결되어 개폐밸브(10)와 상호 반대로 연동하는 것을 특징으로 하는 상수관.Main body 1; In the water supply pipe which consists of the branch pipe 2 connected to the main pipe 1, and the opening / closing valve 10 provided in the branch pipe 2, it is possible to connect a fire hose to the branch pipe 2, and both ends are opened. Consisting of a cylindrical shape, the inner diameter is narrowed toward the central portion in the longitudinal direction, and the narrowest diameter portion (D) having the narrowest inner diameter is formed with a through hole 21 penetrating the inner and outer circumferential surfaces so that the outer circumferential surface is in close contact with the inner circumferential surface of the main pipe 1. Venturi tube 20 is installed; A tip end portion extends into the shooter generating portion of the branch pipe 2 and a base end portion is connected to a through hole 21 of the venturi tube body 20; It is provided in the drain pipe 30 includes an auxiliary valve 40 for controlling the flow of water flowing through the drain pipe 30, the auxiliary valve 40 is connected to the on-off valve 10 of the fire hydrant 10 is opened and closed valve 10 Water pipes, characterized in that interlocking with each other.
KR1020070037474A 2007-04-17 2007-04-17 Water pipe KR100729827B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101291103B1 (en) 2013-05-22 2013-08-07 (자)한진개발공사 Water supplying pipe structure for increasing dead water drainage
CN104018552A (en) * 2014-06-03 2014-09-03 陈书祯 Tap water supply pipe network
CN106638793A (en) * 2016-11-23 2017-05-10 防城港市海河堤管理站 Connection pipe of water pipeline
CN113849024A (en) * 2020-12-04 2021-12-28 平顶山自来水二次供水有限公司 Self-suction type cooling system for secondary water supply pump room

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000005488U (en) * 1998-08-31 2000-03-25 정태희 Water catcher prevention device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000005488U (en) * 1998-08-31 2000-03-25 정태희 Water catcher prevention device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101291103B1 (en) 2013-05-22 2013-08-07 (자)한진개발공사 Water supplying pipe structure for increasing dead water drainage
CN104018552A (en) * 2014-06-03 2014-09-03 陈书祯 Tap water supply pipe network
CN106638793A (en) * 2016-11-23 2017-05-10 防城港市海河堤管理站 Connection pipe of water pipeline
CN113849024A (en) * 2020-12-04 2021-12-28 平顶山自来水二次供水有限公司 Self-suction type cooling system for secondary water supply pump room

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