KR20090083232A - A nonfreezing valve for waterworks - Google Patents

A nonfreezing valve for waterworks Download PDF

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Publication number
KR20090083232A
KR20090083232A KR1020080009254A KR20080009254A KR20090083232A KR 20090083232 A KR20090083232 A KR 20090083232A KR 1020080009254 A KR1020080009254 A KR 1020080009254A KR 20080009254 A KR20080009254 A KR 20080009254A KR 20090083232 A KR20090083232 A KR 20090083232A
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South Korea
Prior art keywords
water pipe
insulating material
heat insulating
geothermal
heat
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KR1020080009254A
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Korean (ko)
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KR100976932B1 (en
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엄영호
권오관
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엄영호
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    • 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
    • E03B9/025—Taps specially designed for outdoor use, e.g. wall hydrants, sill cocks
    • E03B9/027—Taps specially designed for outdoor use, e.g. wall hydrants, sill cocks with features preventing frost damage
    • 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
    • E03B7/09—Component parts or accessories
    • E03B7/10—Devices preventing bursting of pipes by freezing
    • E03B7/12—Devices preventing bursting of pipes by freezing by preventing freezing
    • 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
    • F16L59/147—Arrangements for the insulation of pipes or pipe systems the insulation being located inwardly of the outer surface of the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Thermal Insulation (AREA)

Abstract

A nonfreezing valve for the water supply to prevent the air from contacting a water pipe directly is provided to prevent the water pipe from freezing and being broken by supplying the subterranean heat to the pipe. A nonfreezing valve for the water supply comprises a water pipe(3), an adiabatic material(4), a plastic protecting duct(5), a faucet(6), a cover(11), and a cap(12). A valve(2) having a deposit hole(H) is installed at the water pipe. The adiabatic material prevents the icing and frost break of the water pipe. The adiabatic material has a space in which the subterranean heat is supplied. The adiabatic material is buried between the protecting duct and the water pipe. The plastic protecting duct surrounds the adiabatic material. The faucet is screwed at the top of the water pipe. The top of the adiabatic material and the protecting duct are sealed with the stopper and cap hermetically.

Description

상수도용 부동전{A nonfreezing valve for waterworks}Aqueous anti-freeze {A nonfreezing valve for waterworks}

본 발명은 상수도용 부동전에 관한 것으로, 더욱 상세하게는 수도관과 보호관 사이에 내장되는 보온용 단열재에 형성된 공간으로 지열이 공급되게 함으로써 수도관 내의 결빙 및 동파를 방지하는 상수도용 부동전에 관한 것이다.The present invention relates to a waterworks anti-freeze, and more particularly, to a waterworks anti-freeze that prevents freezing and freezing in the water pipe by allowing geothermal heat to be supplied to a space formed in the thermal insulation insulating material embedded between the water pipe and the protection pipe.

일반적으로 외부에 설치되는 상수도용 부동전은 수도관 내의 결빙 및 동파를 방지하기 위해 스티로폼으로 성형된 보온용 단열재로 수도관을 감싸고, 상기 보온용 단열재는 합성수지제로 성형된 보호관으로 감싸고 있다.In general, the anti-freeze water supply installed in the outside wraps the water pipe with a heat insulating material formed of styrofoam to prevent freezing and freezing in the water pipe, and the heat insulating material is wrapped with a protective tube made of synthetic resin.

그러나 대부분의 상수도용 부동전은 대한민국 등록실용신안공보 등록번호 20-310438호(공고일자 2003. 4. 14.) 등에 기재된 바와 같이 수도관과 보호관 사이에 보온용 단열재를 단순 내장하여 외부의 냉기를 차단하는 구조이므로 외부 기온이 영하로 떨어지면 수도관 내의 결빙 및 동파를 방지할 수 없다.However, most of the anti-static waterworks for water supply, as described in the Republic of Korea Utility Model Registration No. 20-310438 (Announcement date April 14, 2003), etc. simply blocks the external cold air by insulating insulation between the water pipe and the protection pipe Because of this structure, freezing and freezing in the water pipe cannot be prevented when the outside temperature drops below freezing.

본 발명은 상기 문제점을 극복하기 위해 창안한 것으로, 외기가 수도관에 직접 전달되지 않도록 2중, 3중으로 차단하고 지열을 공급하여 보온효과를 높임으로써 상수도용 부동전의 결빙 및 동파를 방지하는데 그 목적이 있다.The present invention has been made to overcome the above problems, and the purpose is to prevent freezing and freezing of the anti-freeze floating water supply by increasing the heat insulation effect by blocking the double and triple so that outside air is not directly transmitted to the water pipe and supplying geothermal heat. have.

본 발명은 목적 달성을 위해 수도관과 보호관 사이에 보온용 단열재를 내장하되 공간을 형성하여 외기를 차단하면서 지열이 공급되도록 하는 수단을 강구하였다. In order to achieve the object of the present invention, a heat insulating material is embedded between the water pipe and the protection pipe, but a space is formed to block the outside air while supplying geothermal heat.

상술한 본 발명은 수도관과 보호관 사이에 형성된 공간을 이용하여 외기를 2중, 3중으로 차단하면서 지열이 공급되도록 함으로써 겨울철 상수도용 부동전의 결빙 및 동파를 방지하는 효과가 있다. The present invention described above has the effect of preventing freezing and freezing of the anti-freeze for winter water supply by allowing geothermal heat to be supplied while blocking the outside air in double or triple by using a space formed between the water pipe and the protection pipe.

본 발명의 상수도용 부동전의 구성을 이하, 첨부 도면과 관련하여 상세하게 설명하면 다음과 같다.Hereinafter, the configuration of the antistatic water supply of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 상수도용 부동전(1) 실시 예를 나타낸 것으로, 상기 상수도용 부동전(1)은 퇴수공(H)을 갖는 밸브(2)가 상단부에 형성된 수도관(3)과; 상기 수도관(3)의 결빙 및 동파를 방지하기 위한 보온용 단열재(4)와; 상기 보온용 단열재(4)를 감싸는 합성수지제 보호관(5)과; 상기 수도관(3)의 상부에 나사결합되는 수도꼭지(6) 및; 상기 보온용 단열재(4)와 보호관(5)의 상단부를 밀봉하기 위한 마개(11)와 캡(12)으로 구성되어 있다.1 shows an embodiment of a waterworks floating field (1) of the present invention, wherein the waterworks floating field (1) includes a water pipe (3) having a valve (2) having a discharge hole (H) formed at an upper end thereof; A heat insulating material 4 for preventing freezing and freezing of the water pipe 3; A protective tube made of synthetic resin (5) surrounding the thermal insulation material (4); A faucet 6 screwed to an upper portion of the water pipe 3; It consists of the stopper 11 and the cap 12 for sealing the upper end part of the said heat insulating material 4 for heat insulation and the protection pipe 5.

본 발명은 퇴수공(H)을 갖는 통상의 밸브(2)를 상기 수도관(3)의 상단부에 형성하여 퇴수공(H)으로 흙 또는 흙탕물 등 이물질이 유입되거나 지렁이 등이 침입하는 비위생적인 조건을 해소하고, 상기 수도관(3) 내 전체에 잔류수가 남아 상수의 낭비를 초래하고 결빙 및 동파되는 것을 방지토록 하였다.The present invention forms a conventional valve (2) having a discharge hole (H) in the upper end of the water pipe (3) to the unsanitary conditions in which foreign matter such as soil or muddy water flows into the discharge hole (H) or earthworms invade The remaining water remained in the whole of the water pipe 3 to eliminate waste water and prevent freezing and freezing.

상기 수도관(3)과 보호관(5) 사이에 내장되는 보온용 단열재(4)는 통상의 스티로폼의 성형되고, 지열이 상부로 공급, 순환될 수 있는 공간(S)이 수직으로 길게 형성되어 있다.The heat insulating material 4 embedded between the water pipe 3 and the protective pipe 5 is formed of a conventional styrofoam, and a space S for vertically supplying and circulating geothermal heat is vertically formed.

상기 보온용 단열재(4)는 수도관(3)을 감쌀 수 있도록 수직으로 2개 또는 그 이상으로 분할되며, 실시 예에 따라 도 2a 내지 2c와 같은 구조로 지열을 공급하는 공간(S)을 갖게 됨과 동시에 외기를 차단한다.The heat insulating material 4 is divided into two or more vertically to wrap the water pipe (3), according to the embodiment will have a space (S) for supplying geothermal heat in the structure as shown in Figure 2a to 2c and At the same time shut off outside air.

도 2a는 2등분된 제1 단열재(7)와 제2 단열재(8) 사이에 공간(S)을 형성하고, 상기 제1, 2 단열재(7)(8)는 여러 개의 지지 리브(9)로 일체 연결되게 성형하여 보온용 단열재(4)를 구성한 것으로, 보호관(5)의 내측에 구비된 제1 단열재(7)로 외기를 1차 차단하여 보온이 되게 하면서 공간(S)을 갖고 수도관(3)을 감싸고 있는 제2 단열재(8)로 외기를 2차 차단하여 보온이 되게 하는 한편 상기 제1, 2 단열재(7)(8) 사이에 형성된 공간(S)을 통해 땅속의 따뜻한 지열을 공급받아 수도관(3)을 보온함으로써 결빙 및 동파를 방지하게 된다.FIG. 2A shows a space S between the bisected first heat insulator 7 and the second heat insulator 8, wherein the first and second heat insulators 7, 8 are divided into several supporting ribs 9. Formed to be integrally connected to constitute a heat insulating material (4), the first heat insulating material (7) provided inside the protective pipe (5) to block the outside air to the primary to keep warm while having a space (S) water pipe (3) The second heat insulator (8) surrounding the secondary air to block the secondary air to keep warm, while receiving the warm geothermal heat in the ground through the space (S) formed between the first and second heat insulators (7) (8) Insulating the water pipe 3 prevents freezing and freezing.

도 2b는 2등분된 제1 단열재(7) 내측으로 여러 개의 지지 리브(9)를 일체 형 성하여 상기 지지 리브(9)의 끝이 수도관(3)에 맞닿아 지지가 됨과 동시에 상기 제1 단열재(7)와 수도관(3) 사이에 공간(S)이 형성되도록 보온용 단열재(4)를 구성한 것으로, 상기 보온용 단열재(4)를 구성하는 제1 단열재(7)로 외기를 차단하면서 공간(S)으로 공급되는 지열로 수도관(3)을 보온한다.FIG. 2B shows a plurality of supporting ribs 9 integrally formed into the second insulated first heat insulating material 7 so that the ends of the supporting ribs 9 are supported by contacting the water pipe 3 and at the same time, the first heat insulating material is supported. The heat insulating material 4 is comprised so that the space S may be formed between the 7 and the water pipe 3, Comprising: 1st heat insulating material 7 which comprises the said heat insulating material 4 blocks an outside air, Insulate the water pipe 3 with the geothermal heat supplied to S).

도 2c는 2등분된 제2 단열재(8) 외측으로 여러 개의 지지 리브(9)를 일체 형성하여 상기 지지 리브(9)의 끝이 보호관(5)의 내측에 맞닿아 지지가 됨과 동시에 상기 제2 단열재(8)와 보호관(5) 사이에 공간(S)이 형성되도록 보온용 단열재(4)를 구성한 것으로, 상기 보온용 단열재(4)에 형성된 공간(S)으로 공급되는 지열로 수도관(3)을 보온하면서 제2 단열재(8)로 외기를 차단하는 작용을 한다.2C shows a plurality of supporting ribs 9 integrally formed outside the second insulated second material 8 so that the ends of the supporting ribs 9 abut against the inner side of the protective tube 5 and are supported. The heat insulating material 4 is configured so that the space S is formed between the heat insulating material 8 and the protective pipe 5, and the geothermal furnace water pipe 3 is supplied to the space S formed in the heat insulating material 4. It acts to block the outside air with the second heat insulating material (8) while keeping warm.

상기 도 2a 내지 2c에 도시된 바와 같은 보온용 단열재(4)의 지지 리브(9)는 수직으로 길게 한 개로 형성될 수도 있고, 일정 간격을 두고 여러 개를 층계로 형성하여 지지할 수도 있다.The support ribs 9 of the thermal insulation insulating material 4 as shown in Figures 2a to 2c may be formed in one long vertically, or may be formed by supporting a plurality of steps at a predetermined interval.

상기 보호관(5)은 합성수지제로 성형하여 보온용 단열재(4)를 감싸되 하단부에 깔때기 모양의 지열 유도부(10)를 형성하여 땅속에서 발생하는 지열을 효율적으로 모아 공간(S)으로 공급, 순환되게 한다.The protective tube 5 is formed of a synthetic resin to surround the thermal insulation material (4) to form a funnel-shaped geothermal induction part 10 at the lower end to efficiently collect the geothermal heat generated in the ground to be supplied to the space (S) do.

상기 보온용 단열재(11)와 보호관(12)의 상단부를 밀봉하기 위한 마개(11)와 캡(12)에는 각각의 지열 배출구멍(13)과 지열 배출홈(13a)을 형성하여 땅속을 통해 보온용 단열재(4)에 구비된 공간(S)으로 올라오는 지열을 서서히 배출시켜 줌으로써 땅속의 따뜻한 지열을 계속 공급받을 수 있도록 하였다.In the stopper 11 and the cap 12 for sealing the upper end of the thermal insulation material 11 and the protective tube 12, each geothermal discharge hole 13 and geothermal discharge grooves (13a) are formed to keep warm through the ground By gradually discharging the geothermal heat coming up to the space (S) provided in the thermal insulation material (4) was able to continue to receive the warm geothermal heat in the ground.

이때 상기 마개(11)에 형성되는 지열 배출구멍(13)의 위치는 보온용 단열 재(4)에 형성된 공간(S)과 대응하는 곳이며, 상기 지열 배출구멍(13)은 원호상에 2~3개 형성하되 그 크기는 φ0.5~1mm 정도로 미세하다.At this time, the position of the geothermal discharge hole 13 formed in the stopper 11 is a place corresponding to the space (S) formed in the heat insulating material 4, the geothermal discharge hole 13 is 2 ~ on the arc. Three are formed, but the size is as small as φ0.5 ~ 1mm.

그리고 상기 캡(12)에 형성되는 지열 배출홈(13a)은 상기 마개(11)의 지열 배출구멍(13)으로부터 배출되는 지열이 외부로 서서히 빠져나갈 수 있도록 상기 캡(12)의 천장과 내 측벽에 「자 모양으로 여러 개 구성하였다. In addition, the geothermal discharge groove 13a formed in the cap 12 has a ceiling and an inner sidewall of the cap 12 so that the geothermal heat discharged from the geothermal discharge hole 13 of the stopper 11 may gradually escape to the outside. "It consisted of several in a shape.

이상과 같이 구성된 본 발명의 상수도용 부동전(1)은 보호관(1)과 수도관(3) 사이에 내장된 보온용 단열재(4)를 구성하는 제1 단열재(7) 및 제2 단열재(8)로 외기를 차단하여 보온함과 동시에 상기 수도관(3)과 보온용 단열재(4) 사이에 형성된 공간(S)으로 지열을 공급받아 보온한다.The waterworks anti-freeze 1 of the present invention configured as described above has a first heat insulating material 7 and a second heat insulating material 8 constituting the heat insulating material 4 embedded between the protective pipe 1 and the water pipe 3. At the same time by blocking the outside air to keep warm and receiving geothermal heat to the space (S) formed between the water pipe (3) and the heat insulating material (4).

그리고 상기 수도관(3)과 보온용 단열재(4) 사이의 공간(S)으로 공급되는 지열을 마개(11)에 형성된 지열 배출구멍(13)과 캡(12)에 형성된 지열 배출홈(13a)으로 서서히 배출시켜 땅속의 따뜻한 지열이 계속 공급되게 함으로써 수도관(3)의 결빙 및 동파를 방지한다. And geothermal heat supplied to the space (S) between the water pipe (3) and the heat insulating material (4) to the geothermal discharge hole 13 formed in the cap 11 and the geothermal discharge groove (13a) formed in the cap 12. By slowly discharging to keep the warm geothermal heat in the ground to prevent freezing and freezing of the water pipe (3).

도 1은 본 발명의 상수도용 부동전 단면도1 is a cross-sectional view of the anti-static water supply of the present invention

도 2a 내지 2c는 본 발명의 실시 예를 나타낸 상수도용 부동전 횡단면도이다.2A to 2C are cross-sectional views of a floating power source for waterworks showing an embodiment of the present invention.

*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***

1 : 상수도용 부동전 2 : 밸브1: Floating power for water supply 2: Valve

3 : 수도관 4 : 보온용 단열재3: water pipe 4: heat insulating material

5 : 보호관 10: 지열 유도부5: protective tube 10: geothermal induction part

S :공간 S: Space

Claims (7)

퇴수공(H)을 갖는 밸브(2)가 형성된 수도관(3)과;A water pipe 3 on which a valve 2 having a discharge hole H is formed; 상기 수도관(3)의 결빙 및 동파를 방지하기 위한 보온용 단열재(4)와;A heat insulating material 4 for preventing freezing and freezing of the water pipe 3; 상기 보온용 단열재(4)를 감싸는 합성수지제 보호관(5)과;A protective tube made of synthetic resin (5) surrounding the thermal insulation material (4); 상기 수도관(3)의 상부에 나사결합되는 수도꼭지(6) 및;A faucet 6 screwed to an upper portion of the water pipe 3; 상기 보온용 단열재(4)와 보호관(5)의 상단부를 밀봉하기 위한 마개(11)와 캡(12)으로 상수도용 부동전(1)을 구성하고,The stopper 11 and the cap 12 for sealing the upper end of the heat insulating material 4 and the protective tube 5 to constitute the antistatic water supply (1), 상기 수도관(3)과 보호관(5) 사이에 내장되는 보온용 단열재(4)에 지열이 공급되는 공간(S)을 구성한 것을 특징으로 하는 상수도용 부동전.Passive power for water supply, characterized in that the space (S) for supplying geothermal heat to the heat insulating material (4) built between the water pipe (3) and the protective pipe (5). 제 1 항에 있어서,The method of claim 1, 상기 보온용 단열재(4)는 분할되어 여러 개의 지지 리브(9)로 연결된 제1, 2 단열재(7)(8)로 형성되고, 상기 제1, 2 단열재(7)(8) 사이에 지열이 공급되는 공간(S)을 구성한 것을 특징으로 하는 상수도용 부동전. The heat insulating material 4 is divided into first and second heat insulating materials 7 and 8 connected by a plurality of support ribs 9, and geothermal heat is interposed between the first and second heat insulating materials 7 and 8. A waterworks antistatic power supply comprising a space S supplied. 제 1 항에 있어서,The method of claim 1, 상기 보온용 단열재(4)는 분할된 제1 단열재(7) 내측으로 수도관(3)과 맞닿 는 여러 개의 지지 리브(9)를 형성하여 상기 수도관(3)과 제1 단열재(7) 사이에 지열이 공급되는 공간(S)을 구성한 것을 특징으로 하는 상수도용 부동전.The heat insulating material (4) forms a plurality of support ribs (9) in contact with the water pipe (3) inside the divided first heat insulating material (7), geothermal heat between the water pipe (3) and the first heat insulating material (7) A waterworks antistatic power supply comprising the space S supplied. 제 1 항에 있어서,The method of claim 1, 상기 보온용 단열재(4)는 분할된 제2 단열재(8) 외측으로 보호관(5)의 내측과 맞닿는 여러 개의 지지 리브(9)를 형성하여 상기 보호관(5)과 제2 단열재(8) 사이에 지열이 공급되는 공간(S)을 구성한 것을 특징으로 하는 상수도용 부동전.The heat insulating material 4 forms a plurality of support ribs 9 which contact the inner side of the protective tube 5 outside the divided second thermal insulating material 8 and between the protective tube 5 and the second thermal insulating material 8. An anti-static water supply system comprising a space S to which geothermal heat is supplied. 제 1 항에 있어서,The method of claim 1, 상기 보온용 단열재(4)를 감싸는 보호관(5)의 하단부에 깔때기 모양의 지열 유도부(10)가 구성된 것을 특징으로 하는 상수도용 부동전.Passive power supply for water, characterized in that the funnel-shaped geothermal induction part 10 is configured at the lower end of the protective tube (5) surrounding the thermal insulation material (4). 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 5, 상기 수도관(3)의 상단부에 퇴수공(H)을 갖는 밸브(2)가 구성된 것을 특징으로 하는 상수도용 부동전.Passive power supply for water supply, characterized in that the valve (2) having a discharge hole (H) is configured at the upper end of the water pipe (3). 제 1 항에 있어서,The method of claim 1, 상기 마개(11)와 캡(12)에 각각의 지열 배출구멍(13)과 지열 배출홈(13a)을 형성한 것을 특징으로 하는 상수도용 부동전. The geothermal heat dissipation hole (13a) and geothermal discharge grooves (13a) formed in the stopper (11) and the cap (12).
KR1020080009254A 2008-01-29 2008-01-29 A nonfreezing valve for waterworks KR100976932B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101257323B1 (en) * 2012-12-18 2013-04-29 엄영호 Nonfreezing for waterworks
CN104878803A (en) * 2015-05-25 2015-09-02 张晋敏 Anti-freezing water pipe
KR102167374B1 (en) * 2020-04-09 2020-10-19 손상목 Antifreezing waterworks with geothermal heat absorption device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101368217B1 (en) * 2012-02-09 2014-02-27 (주)맑은물연구소 An apparatus on the ground for measuring water presure of water pipe

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200310438Y1 (en) * 2003-01-24 2003-04-14 최구환 The antifreezing waterworks
KR20060026555A (en) * 2004-09-21 2006-03-24 오세갑 The freezing protective device for a water meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101257323B1 (en) * 2012-12-18 2013-04-29 엄영호 Nonfreezing for waterworks
CN104878803A (en) * 2015-05-25 2015-09-02 张晋敏 Anti-freezing water pipe
KR102167374B1 (en) * 2020-04-09 2020-10-19 손상목 Antifreezing waterworks with geothermal heat absorption device

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