WO2023042930A1 - Bague d'isolation d'arrêt d'eau et chambre à vanne isolante l'utilisant - Google Patents

Bague d'isolation d'arrêt d'eau et chambre à vanne isolante l'utilisant Download PDF

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Publication number
WO2023042930A1
WO2023042930A1 PCT/KR2021/012595 KR2021012595W WO2023042930A1 WO 2023042930 A1 WO2023042930 A1 WO 2023042930A1 KR 2021012595 W KR2021012595 W KR 2021012595W WO 2023042930 A1 WO2023042930 A1 WO 2023042930A1
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WO
WIPO (PCT)
Prior art keywords
insulation
circular flange
valve chamber
ring
parts
Prior art date
Application number
PCT/KR2021/012595
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English (en)
Korean (ko)
Inventor
함윤경
정형채
Original Assignee
삼영기술주식회사
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Application filed by 삼영기술주식회사 filed Critical 삼영기술주식회사
Publication of WO2023042930A1 publication Critical patent/WO2023042930A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/06—Sulfur
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
    • C08K5/40—Thiurams, i.e. compounds containing groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/43—Compounds containing sulfur bound to nitrogen
    • C08K5/435—Sulfonamides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • 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
    • F16L5/08—Sealing by means of axial screws compressing a ring or sleeve

Definitions

  • the present invention relates to an insulating member that prevents conduction between objects, and more particularly, to a water stop-insulation ring that water-stops and insulates between a valve chamber buried underground and a pipeline installed through the valve chamber, and a water-stop insulation ring using the same to prevent corrosion of pipelines. It relates to an isolation valve chamber that can be prevented.
  • the valve room refers to an enclosed place where the valve body operates.
  • a valve that can control the opening and closing or branching of underground pipelines such as water supply pipes is installed in the underground valve room, and a worker enters the valve room through a manhole connecting the valve room and the ground. It is operated in such a way as to control the valve.
  • the pipe line is a metal pipe such as steel pipe or cast iron pipe (hereinafter referred to as 'metal pipe')
  • corrosion occurs in the ground, which not only reduces the durability of the pipe line, but also causes hygiene and contamination problems in the case of water supply pipes.
  • 'metal pipe' a metal pipe such as steel pipe or cast iron pipe
  • a sacrificial anode such as magnesium or zinc, which has a higher ionization tendency than the metal tube, is electrically connected to the metal tube so that the sacrificial anode is oxidized instead of the metal tube.
  • the external power method there is a method of preventing corrosion of the metal tube by supplying electrons by flowing current through the metal tube from the outside.
  • valve chamber is made of a conductive steel material for ease of fabrication, transportation, and assembly of valve chamber components such as walls.
  • electrically coupling the metal pipe and the valve chamber as described above, it is important to maintain the insulation between the metal pipe and the valve chamber because the corrosion does not transfer to the metal pipe even if corrosion occurs in the valve chamber.
  • FIG. 1 shows a configuration for insulating a main part of a conventional insulation valve chamber, that is, a valve chamber wall and a metal pipe, and the conventional insulation valve chamber has a valve chamber wall in which a pipe receiving port 1 into which a metal pipe P is inserted is formed.
  • Insulated receiving portions 3 are provided on both sides, and non-conductive strips 4 are provided along the inner circumferential surface of the pipe receiving portion 1, so that the metal pipe P is provided with a pair of insulated receiving portions 3 and the non-conductive strip. As supported by (4), it can be electrically insulated from the valve chamber wall (2).
  • the pair of insulation receiving parts 3 are coupled to the valve chamber wall 2, and the first circular flange 6 with the bolt 5 protruding along the circumference, the bolt of the first circular flange 6 ( 5)
  • An elastic insulator (7) disposed inside, a second circular flange (8) with a bolt hole formed along the circumference through which the bolt (5) of the first circular flange (6) penetrates, and the second circular flange (8) Consists of a nut (9) coupled to the bolt (5) outside of the first circular flange (6) and the elastic insulator (7), the ring-shaped elastic insulator (7) and the second circular flange (8) tightly coupled,
  • the elastic insulator 7 can electrically separate the metal tube P from the valve chamber wall 2 as a conductor and fix it to the valve chamber wall 2 .
  • the ring-shaped elastic insulator 7 is a member such as a general rubber ring having a circular cross section, so that the elastic insulator 7 is inserted between the first circular flange 6 and the second circular flange 8.
  • the prior invention of the present inventor relates to the structural characteristics of the isolation valve chamber, and there is also a problem that the material or standard of the insulating member such as the elastic insulator 7 or the non-conductive strip 4 is not optimized.
  • Patent Document 1 KR 10-1952136 B (2019. 2. 20.)
  • the present invention has been made to solve the above problems, and the problem to be solved by the present invention is to adhere to the non-conductive strip between the valve chamber wall, the first and second circular flanges and the metal pipe to provide water and insulation between the metal pipe and the valve chamber. It is to provide a water stop-insulation ring and an insulation valve chamber using the same that can be assured.
  • the optimal material and specifications of the index-insulation ring and the non-conductive strip are derived.
  • the index-insulating ring according to the present invention is a ring-shaped insulating member having a right-angled trapezoidal cross section, containing 0.5 to 0.7 parts by weight of zinc dibutyldithiocarbamate based on 100 parts by weight of carbon-containing rubber (Carbon Master Batch), N- 0.3 to 0.5 parts by weight of cyclohexyl-2-benzothiazole sulfanamide, 0.2 to 0.3 parts by weight of sulfur, and 0.1 to 0.3 parts by weight of diphenparmethylene thiuram tetrasulfide are crosslinked.
  • An insulation valve chamber is an insulation valve chamber composed of a body portion forming the outer shape of the valve chamber and an insulation receiving portion electrically insulating a metal pipe from the body portion, and the number of conduits for accommodating the metal pipe in the wall of the body portion.
  • a first circular flange in which a tool is formed the insulating accommodating part is disposed in a pair on both sides of the pipe accommodating part of the wall, the insulating accommodating part is coupled to the wall and a bolt protrudes outward along the circumference of the wall , index according to the present invention disposed inside the bolt of the first circular flange - insulating ring, the bolt hole is formed along the circumference of the second circular flange fastened to the first circular flange and outside the second circular flange It is coupled to a bolt and is composed of a nut for compressively coupling the water stop-insulation ring between the first and second circular flanges.
  • the index-insulating ring according to the present invention is easily inserted between the metal pipe and the wall.
  • the water-stop insulation ring is compressed by the first and second circular flanges, so the watertight effect is high, and thus the possibility of insulation between the metal pipe and the wall being destroyed by moisture can be significantly reduced.
  • 1 is an insulation structure of a conventional insulation valve chamber
  • Figure 2 is a cross-sectional view when the water stop-insulation ring is compressed in a conventional insulation valve chamber
  • Figure 3 is a perspective view of the index-insulation ring according to the present invention
  • Figure 4 is a cross-sectional view of the index-insulation ring according to the present invention.
  • FIG. 5 is a perspective view of an isolation valve chamber according to the present invention
  • Figure 6 is an exploded perspective view showing the coupling structure of the body portion and the insulation receiving portion
  • FIG. 7 and 8 are cross-sectional views before and after fastening the first and second circular flanges during the construction of the insulation valve chamber according to the present invention
  • FIG. 9 is a model diagram modeling the insulating ability of the non-conductive strip 130 in the present invention.
  • 10 is a simulation of resistance distribution according to the thickness and width of a non-conductive strip.
  • 11 to 20 are simulation results of insulation ability according to the surface resistance and width of the non-conductive strip and the outer diameter of the metal tube.
  • FIG. 3 is a perspective view of an index-insulating ring according to the present invention
  • FIG. 4 is a cross-sectional view thereof.
  • the index-insulating ring 10 according to the present invention is a ring-shaped insulating member having a right-angled trapezoidal cross section, and the first and second circular flanges compress the hypotenuse of the right-angled trapezoid while press-fitting between the valve chamber wall and the metal pipe. It becomes a shape that comes into contact with this non-conductive strip.
  • the structure of the isolation valve chamber according to the present invention will be described.
  • FIG. 5 is a perspective view of an insulation valve chamber according to the present invention
  • FIG. 6 is an exploded perspective view showing a coupling structure between a body portion and an insulation receiving portion.
  • the insulation valve chamber according to the present invention is composed of a body part 100 forming the outer shape of the valve chamber and an insulation receiving part 200 electrically insulating the metal pipe (P) from the body part 100, and the metal pipe (P)
  • the pipe receiver 110 for accommodating is formed on the wall 120 of the main body 100, and the non-conductive strip 130 is provided on the inner circumferential surface of the pipe receiver 110.
  • the insulation receiving part 200 is disposed in a pair on both sides of the pipe receiving part 110 of the wall 120, so that the pair of insulating receiving parts 200 are located inside and outside the pipe receiving part 110 of the wall 120, respectively.
  • the insulation receiving portion 200 is coupled to the wall 120, and the first circular flange 220 in which the bolt 210 protrudes outward along the circumference of the wall 120, and the bolt of the first circular flange 220.
  • the material of the first circular flange 220 is preferably the same as that of the wall 120 so that it can be fixed to the wall 120 by welding.
  • FIG. 7 and 8 are cross-sectional views before and after fastening the first and second circular flanges during construction of the insulation valve chamber according to the present invention, as shown in FIG.
  • Index - the short side (height h1) of the right-angled trapezoid which is the shape of the cut surface of the insulating ring 230, faces the wall 120, and the hypotenuse faces the first circular flange 220, index - the insulating ring 230
  • the outer diameter of the largest part is located between the first circular flange 220 and the second circular flange 240.
  • the second circular flange 240 index - when the insulating ring 230 is pressed against the first circular flange 220, the index - the tapered portion (height h2) of the insulating ring 230 is the first circular flange 220 While touching the inner circumferential surface 221 of ), the water stop-insulation ring 230 is pushed toward the wall 120, and the water stop-insulation ring 230 in contact with the metal pipe P also applies pressure toward the metal pipe P. As shown in FIG. 8, it is pushed out towards the second circular flange 240, so that the insulation of the metal tube P can be further ensured.
  • the non-conductive strip 130 and the index-insulating ring 230 come into contact and cover the outside of the metal pipe P, so there is a risk that the insulation between the metal pipe P and the wall 120 will be destroyed.
  • the space V surrounded by the wall 120, the non-conductive strip 130, the first circular flange 220, and the water stop-insulation ring 230 is also completely separated from the outside, so that groundwater does not permeate.
  • the first circular flange 220 and the index-insulation ring 230 are in close contact at a right angle in cross section, Watertightness can be more assured.
  • FIG. 9 is a model diagram modeling the insulation capability of the non-conductive strip 130 in the present invention
  • FIG. 10 is a simulation of resistance distribution according to the thickness and width of the non-conductor strip 130. That is, in the present invention, it is assumed that the non-conductor strip 130 in the form of a small pipe is provided along the inner circumferential surface of the pipe receiver 110.
  • 11 to 20 are simulation results of insulation capability according to the surface resistance and width of the non-conductive strip and the outer diameter of the metal tube. According to the experiment of the present inventor, it was determined that the insulation between the wall 120 and the metal pipe P was sufficient if the resistance value of the non-conductive strip 130 was 5000 M ⁇ . Therefore, while changing conditions such as the width of the insulator strip, a method of extracting only conditions in which the resistance value of the insulator strip 130 is 5000 M ⁇ or more was approached.
  • the surface resistance of the non-conductive strip 130 may be 100 G ⁇ /sq or more.
  • the outer diameter of the above metal pipe (P) corresponds to most underground buried pipes currently used in Korea, and when the surface resistance, width and thickness of the non-conductive strip (130) are as above, It is considered to be sufficiently insulated.
  • the present inventors found that 0.5 to 0.7 parts by weight of zinc dibutyldithiocarbamate, 0.3 to 0.5 parts by weight of N-cyclohexyl-2-benzothiazole sulfanamide, based on 100 parts by weight of carbon-containing rubber (Carbon Master Batch), 0.2 to 0.3 parts by weight of sulfur and 0.1 to 0.3 parts by weight of diphenpamethylene thiuram tetrasulfide were cross-linked, and it was experimentally derived that the surface resistance of the non-conductive strip 130 could be increased to 100 G ⁇ /sq or more.
  • the index-insulation ring 230 it is compressed to the non-conductive strip 130 to insulate the surface of the metal pipe (P) and to prevent water from penetrating into the valve chamber from the outside. Since it is more preferable, the material of the water stop-insulation ring 230 is also preferably made the same as the material of the non-conductive strip 130.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)

Abstract

La présente invention concerne un élément d'isolation permettant d'empêcher la conduction entre des objets et, plus particulièrement : une bague d'isolation d'arrêt d'eau permettant de fournir une isolation entre une chambre à vanne enterrée sous terre et une canalisation fournie pour passer à travers la chambre à vanne; et une chambre à vanne d'isolation capable d'empêcher la corrosion de la canalisation en l'utilisant. La bague d'isolation d'arrêt d'eau selon la présente invention est techniquement caractérisée en ce qu'elle est un élément d'isolation en forme d'anneau ayant une section transversale trapézoïdale droite, et en ce qu'elle est formée d'un matériau obtenu par la réticulation et le mélange, sur la base de 100 parties en poids d'un caoutchouc contenant du carbone (lot maître de carbone), de 0,5 à 0,7 partie en poids de dibutyldithiocarbamate de zinc, de 0,3 à 0,5 partie en poids de N-cyclohexyl-2-benzothiazole sulfonamide, de 0,2 à 0,3 partie en poids de soufre et de 0,1 à 0,3 partie en poids de tétrasulfure de dipentaméthylène thiurame.
PCT/KR2021/012595 2021-09-14 2021-09-15 Bague d'isolation d'arrêt d'eau et chambre à vanne isolante l'utilisant WO2023042930A1 (fr)

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KR10-2021-0122203 2021-09-14
KR1020210122203A KR102541346B1 (ko) 2021-09-14 2021-09-14 지수-절연링 및 이를 이용한 절연밸브실

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090221751A1 (en) * 2006-01-28 2009-09-03 Evonik Degussa Gmbh Rubber Mixtures
KR20100008263A (ko) * 2008-07-15 2010-01-25 현대자동차주식회사 내유성을 향상시킨 에어인테이크 호스용 고무 조성물
KR101952136B1 (ko) * 2018-03-28 2019-02-26 삼영기술주식회사 절연 밸브실
JP2019189838A (ja) * 2018-04-27 2019-10-31 日本ゼオン株式会社 アクリルゴムの製造方法、ならびに、その製造方法により得られるアクリルゴム、ゴム組成物、及びゴム架橋物
JP2019189835A (ja) * 2018-04-27 2019-10-31 日本ゼオン株式会社 アクリルゴムの製造方法、および、その製造方法により得られるアクリルゴム
JP2019194324A (ja) * 2018-04-27 2019-11-07 日本ゼオン株式会社 アクリルゴムの製造、及び得られるアクリルゴム
CN212868429U (zh) * 2020-07-01 2021-04-02 上海平泰橡胶制品有限公司 一种用于饮用水管道接头的橡胶密封圈

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100927198B1 (ko) * 2009-07-16 2009-11-18 김성훈 다용도 플랜지 배관 연결 장치
KR101347822B1 (ko) * 2013-03-13 2014-01-10 방영학 친환경 상수도관 패킹용 고무 조성물
DE112018005422T5 (de) * 2017-11-10 2020-07-30 Cabot Corporation Verfahren zur Herstellung eines Elastomercompound und Elastomercompounds

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090221751A1 (en) * 2006-01-28 2009-09-03 Evonik Degussa Gmbh Rubber Mixtures
KR20100008263A (ko) * 2008-07-15 2010-01-25 현대자동차주식회사 내유성을 향상시킨 에어인테이크 호스용 고무 조성물
KR101952136B1 (ko) * 2018-03-28 2019-02-26 삼영기술주식회사 절연 밸브실
JP2019189838A (ja) * 2018-04-27 2019-10-31 日本ゼオン株式会社 アクリルゴムの製造方法、ならびに、その製造方法により得られるアクリルゴム、ゴム組成物、及びゴム架橋物
JP2019189835A (ja) * 2018-04-27 2019-10-31 日本ゼオン株式会社 アクリルゴムの製造方法、および、その製造方法により得られるアクリルゴム
JP2019194324A (ja) * 2018-04-27 2019-11-07 日本ゼオン株式会社 アクリルゴムの製造、及び得られるアクリルゴム
CN212868429U (zh) * 2020-07-01 2021-04-02 上海平泰橡胶制品有限公司 一种用于饮用水管道接头的橡胶密封圈

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KR20230039198A (ko) 2023-03-21

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