KR102259180B1 - Metal ball valve resolving and maintenance type for high temperature and high pressure liquid flow with sub Valve Class Number 4500 - Google Patents

Metal ball valve resolving and maintenance type for high temperature and high pressure liquid flow with sub Valve Class Number 4500 Download PDF

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KR102259180B1
KR102259180B1 KR1020210000931A KR20210000931A KR102259180B1 KR 102259180 B1 KR102259180 B1 KR 102259180B1 KR 1020210000931 A KR1020210000931 A KR 1020210000931A KR 20210000931 A KR20210000931 A KR 20210000931A KR 102259180 B1 KR102259180 B1 KR 102259180B1
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valve
ball
hole
seat
high temperature
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KR1020210000931A
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Korean (ko)
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김충호
송상영
김광희
황제원
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김충호
한국동서발전(주)
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0626—Easy mounting or dismounting means
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0635—Carbides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/003—Safety valves; Equalising valves, e.g. pressure relief valves reacting to pressure and temperature
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Taps Or Cocks (AREA)

Abstract

The present invention relates to an overhaul type metal ball valve for high-temperature and high-pressure fluid with valve grade 4500 or less. The metal ball valve comprises a valve body, a ball, a seat assembly, a stem, and a valve cover.

Description

밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브{Metal ball valve resolving and maintenance type for high temperature and high pressure liquid flow with sub Valve Class Number 4500}Metal ball valve resolving and maintenance type for high temperature and high pressure liquid flow with sub Valve Class Number 4500}

본 발명은 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브에 관한 것으로, 더욱 상세하게는, 밸브 등급번호 4500의 고온 및 고압에 사용되는 밸브에서 배관의 절단없이 밸브몸체의 상부에 결합된 밸브덮개를 개방하여 볼 및 시트조립체 등을 분해, 정비가 용이하게 이루어지도록 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브에 관한 것이다.The present invention relates to a disassembled and serviced metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less, and more particularly, in a valve used for high temperature and high pressure of a valve grade of 4500, on the upper part of the valve body without cutting the pipe. It relates to a disassembled and repaired metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less to facilitate disassembly and maintenance of a ball and seat assembly by opening a combined valve cover.

일반적으로 고온, 고압을 수반하는 스팀(Steam)계통, 화력발전소, 열병합발전소 등에 사용되는 볼 밸브는, 등급번호 4500(Class Number 4500)으로 사용되고 있으며, 고온과 고압을 수반하는 장소에 적합한다.In general, a ball valve used in a steam system involving high temperature and high pressure, a thermal power plant, a cogeneration plant, etc. is used as a class number 4500, and is suitable for places involving high temperature and high pressure.

등급번호 4500(Class Number 4500)의 정의는 ASME(American Society of Mechanical Engineers) Boiler and Pressure Vessel Code로 압력-온도 정격은 등급번호(Class Number)로 분류되며, 등급번호는 150, 300, 400, 600, 900, 1500, 2500 및 4500으로 분류된다. 등급번호 4500은 최고 등급으로 고온과 고압을 수반한다.The definition of Class Number 4500 is the ASME (American Society of Mechanical Engineers) Boiler and Pressure Vessel Code, and the pressure-temperature rating is classified by Class Number, and the class numbers are 150, 300, 400, 600. , 900, 1500, 2500 and 4500. Grade number 4500 is the highest grade and involves high temperatures and high pressures.

또한, 고온과 고압을 수반한 유체에 사용하는 볼밸브는 메탈씰(Metal-Seal) 볼 밸브로 유로를 차단하는 부품인 볼과 시트는 금속 경화면으로 구성이 되어 있고, 고온과 고압의 유체로 부터 안전을 위하여 밸브와 배관의 이음을 용접(Welding)형으로 설치됨으로 밸브 내부 부품 정비하기 위해 밸브바디로 분해가 가능해야 한다.In addition, the ball valve used for fluids with high temperature and high pressure is a metal-seal ball valve, and the ball and seat, which are parts that block the flow path, are composed of a metal hardened surface. For safety, the connection between the valve and the pipe is installed in a welding type, so it must be possible to disassemble it into a valve body to repair the internal parts of the valve.

그러나, 현재까지 생산되고 있는 4"(100A)이하 고온, 고압용 메탈-시일 볼밸브(Metal-Seal Ball Valve)는 소형화(Compact)로 입구측면(Side-Entry)으로 생산되고 있다.However, metal-seal ball valves for high temperature and high pressure below 4" (100A), which have been produced to date, are compact and are produced as side-entries.

이를 특허등록번호 10-1559681호의 "유지 보수가 용이한 스템 밸브"에서 그 구조를 찾아 볼 수 있는데, 여기서 볼이나 시트 등은 분리가 어렵고, 스템만을 분리하여 패킹을 교체하는 수준의 정비만이 가능하게 된다.The structure can be found in the "Stem Valve for Easy Maintenance" of Patent Registration No. 10-1559681, where it is difficult to separate the ball or seat, and only the stem can be separated to replace the packing. It is done.

즉, 볼과 시트를 분리하기 위해서는 배관에서 밸브를 분리해야 되는데, 부품 조립 및 분해가 몸통 입구측면을 이용하여 분해 조립이 이루어짐으로, 배관 용접 후 밸브의 분해 정비가 불가능하고, 정비를 위해서는 배관에서 밸브를 분리하여 정비해되는데, 이는 용접되어진 밸브를 배관에서 절단한 후 밸브를 정비해야 해야 된다.In other words, in order to separate the ball and seat, the valve must be separated from the pipe.Since the assembly and disassembly of parts is performed using the inlet side of the body, disassembly and maintenance of the valve after pipe welding is impossible. The valve is separated and serviced, which requires maintenance of the valve after the welded valve is cut off the pipe.

이와 같이 용접되어진 밸브를 배관에서 절단 후에는 다시 용접해야 되고, 재설치후 밸브와 배관의용접, 용접부 후열처리, 용접부 비파괴검사 등이 수행되어야 함으로 많은 비용과 시간이 소요되는 문제점 있다.After cutting the welded valve in the pipe, it must be welded again, and after re-installation, the valve and the pipe must be welded, post-heat treatment of the weld, and non-destructive inspection of the welded part must be performed, which requires a lot of cost and time.

한편, 밸브몸체의 상부에 결합된 보닛(bonnet)을 개방하여 볼 등의 수리 및 교체가 가능하도록 하는 분해 및 수리가 용이한 탑-앤트리 볼밸브도 종래의 선행문헌으로 특허등록번호 10-1826147호, 10-2100705호, 10-1363283호 및 10-1601716호 등이 개시되어 있다.On the other hand, a top-ntree ball valve that is easy to disassemble and repair, which allows repair and replacement of balls, etc. by opening the bonnet coupled to the upper part of the valve body, is also a prior art document, Patent Registration No. 10-1826147. Nos., 10-2100705, 10-1363283, and 10-1601716 are disclosed.

그러나, 상기 종래의 선행문헌의 탑-앤트리 볼밸브는 등급번호 4500의 고온 및 고압에는 적용하지 못하는 문제점 있다.However, the conventional top-and-tree ball valve of the prior literature has a problem that cannot be applied to high temperature and high pressure of grade number 4500.

특허 1: 특허등록번호 10-1559681호{등록일자: 2015년10월05일}Patent 1: Patent registration number 10-1559681 {Registration date: October 5, 2015} 특허 2: 특허등록번호 10-1826147호{등록일자: 2018년01월31일}Patent 2: Patent registration number 10-1826147 {Registration date: January 31, 2018} 특허 3: 특허등록번호 10-2100705호{등록일자: 2020년04월08일}Patent 3: Patent registration number 10-2100705 {Registration date: April 8, 2020} 특허 4: 특허등록번호 10-1363283호{등록일자: 2014년02월10일Patent 4: Patent registration number 10-1363283 (Registration date: February 10, 2014 특허 5: 특허등록번호 10-1601716호{등록일자: 2016년03월03일}Patent 5: Patent registration number 10-1601716 {Registration date: March 3, 2016}

본 발명은 상기 종래기술의 문제점을 해결하기 위한 것으로, 본 발명의 목적은, 밸브 등급번호 4500 이하의 고온 및 고압에 사용되는 밸브에서 배관의 절단없이 밸브몸체의 상부에 결합된 밸브덮개를 개방하여 볼 및 시트조립체 등을 분해, 정비가 용이하게 이루어지도록 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브를 제공함에 있다.The present invention is to solve the problems of the prior art, and an object of the present invention is to open the valve cover coupled to the upper part of the valve body without cutting the pipe in a valve used for high temperature and high pressure with a valve grade number of 4500 or less. It is to provide a disassembly and maintenance type metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less, which makes it easy to disassemble and maintain the ball and seat assembly.

본 발명을 달성하기 위한 기술적 사상으로 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브는, 내부에 챔버가 형성되고, 상기 챔버와 연통되도록 양측에 유체 유입공 및 유체 배출공이 대향 배치되어 있으며, 상기 유체 유입공 및 상기 유체 배출공의 내측에 대향된 한 쌍의 시트조립체 결합부가 마련되어 있으며 중앙 상부에는 밸브몸체 내부로 볼을 수용 결합하는 볼 조립공이 형성되어진 밸브몸체; 중심을 통과하는 유로를 구비하며, 밸브몸체의 챔버에 결합되어 회전에 의해 유로를 개폐하는 볼; 상기 볼 조립공을 통해 상기 시트조립체 결합부의 내경에 결합되어 함께 수용 결합된 상기 볼의 외경에 밀착되어진 시트조립체; 상기 볼을 회전시키도록 상기 볼의 상부에 일단이 결합되어진 스템; 상기 스템이 결합되는 수직공이 형성되고, 상기 볼 조립공을 폐쇄시키는 밸브덮개; 를 포함하며, 상기 유체 유입공 및 유체 배출공에는 배관이 용접결합되고, 상기 시트조립체는, 외경의 일단에 형성된 제1나사부가 상기 시트조립체 결합부에 나사결합되고, 상기 제1나사부의 반대면에 공구에 의해 회전하도록 제1공구결합홈이 형성되어지며, 내경에 시트하우징 결합공이 형성되고, 상기 시트하우징 결합공보다 직경이 크게 형성된 제1나사공이 형성되어진 바디씰리테이너와, 일측에 형성된 바디부가 상기 바디씰리테이너의 시트하우징 결합공에 결합되고, 상기 바디부에 일체로 형성되어 상기 제1나사공에 결합되는 제2나사부 및 제2공구결합홈이 타측에 형성되며, 내경에 탄성부재가 결합되어진 결합홈이 형성되어진 시트하우징과, 상기 시트하우징의 내측에 결합되고, 상기 탄성부재에 의해 볼에 밀착되어지는 시트링을 포함하는 것이다.As a technical idea for achieving the present invention, the disassembly and maintenance type metal ball valve for high temperature and high pressure fluids with a valve grade of 4500 or less has a chamber formed therein, and a fluid inlet hole and a fluid discharge hole are oppositely arranged on both sides to communicate with the chamber. A valve body provided with a pair of seat assembly coupling portions facing the inner side of the fluid inlet hole and the fluid outlet hole, and a ball assembly hole for receiving and coupling the ball into the valve body at an upper center thereof; A ball having a flow path passing through the center and coupled to the chamber of the valve body to open and close the flow path by rotation; A seat assembly coupled to the inner diameter of the seat assembly coupling portion through the ball assembly hole and in close contact with the outer diameter of the balls accommodated together; A stem having one end coupled to the top of the ball to rotate the ball; A valve cover having a vertical hole to which the stem is coupled, and closing the ball assembly hole; A pipe is welded to the fluid inlet hole and the fluid outlet hole, and the sheet assembly includes a first screw portion formed at one end of the outer diameter is screwed to the seat assembly coupling portion, and the opposite surface of the first screw portion A first tool coupling groove is formed to rotate by a tool, a seat housing coupling hole is formed in the inner diameter, a body seal retainer having a first screw hole formed larger in diameter than the seat housing coupling hole, and a body formed on one side A second screw portion and a second tool coupling groove are formed on the other side, which are additionally coupled to the seat housing coupling hole of the body seal retainer and integrally formed on the body portion and coupled to the first screw hole, and an elastic member is formed on the inner diameter. And a seat housing having a coupled coupling groove formed thereon, and a seat ring coupled to the inner side of the seat housing and in close contact with the ball by the elastic member.

또한, 상기 바디씰리테이너의 제1나사공의 후방에는 공간부가 형성되어 상기 시트하우징 및 시트링이 볼의 반대측으로 분리될 수 있도록 하는 것이다.In addition, a space is formed behind the first screw hole of the body seal retainer so that the seat housing and the seat ring can be separated to the opposite side of the ball.

또한, 상기 탄성부재는 적어도 하나 이상의 판스프링으로 이루어진 것이다.In addition, the elastic member is made of at least one or more leaf springs.

또한, 상기 시트하우징의 결합홈에는 탄성부재와 함께 패킹이 결합되어진 것이다.In addition, the packing is coupled together with an elastic member in the coupling groove of the seat housing.

또한, 상기 밸브덮개의 수직공의 하측에는 단턱부가 형성되어 상기 스템의 외경에 대응되도록 하고, 밸브 내부에서 유동되는 고온 및 고압의 유체에 대해 패킹을 보호하도록 하는 것이다.In addition, a stepped portion is formed under the vertical hole of the valve cover to correspond to the outer diameter of the stem, and to protect the packing against high temperature and high pressure fluid flowing inside the valve.

또한, 상기 볼의 하부에는 지지축이 형성되어 하방지지되며, 상기 지지축의 외측에 부싱이 결합되되, 상기 부싱의 상부 인디케이터부가 형성되어 상기 시트하우징의 결합정도를 확인할 수 있도록 하는 것이다.In addition, a support shaft is formed at the lower portion of the ball to prevent lowering, and a bushing is coupled to the outside of the support shaft, and an upper indicator portion of the bushing is formed so that the degree of coupling of the seat housing can be checked.

또한, 상기 볼과 시트링은 크롬-카바이드(Chromium-Cardide)용사 코팅과 물리증착법(PVD) 코팅을 적용하여 고온 내마모성을 부여하도록 하는 것이다.In addition, the ball and the seat ring are applied to a chromium-carbide (Chromium-Cardide) thermal spray coating and a physical vapor deposition (PVD) coating to impart high temperature abrasion resistance.

또한, 상기 시트하우징과 바디씰리테이너의 재질은 내열성을 구비한 ASTM A565-Grade 616 또는 니켈 합금강을 사용하도록 하는 것이다.In addition, the material of the seat housing and the body seal retainer is to use ASTM A565-Grade 616 or nickel alloy steel having heat resistance.

또한, 상기 제1나사부 및 제2나사부는 고온부식(High Temperature Corrosion) 및 접동면마모(Galling) 방지를 위해 물리증착법(PVD) 코팅을 수행하도록 하는 것이다.In addition, the first screw portion and the second screw portion are to perform physical vapor deposition (PVD) coating to prevent high temperature corrosion and sliding surface wear (Galling).

본 발명을 달성하기 위한 기술적 사상으로 본 발명에 따른 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브는, 밸브 등급번호 4500 이하의 고온 및 고압에 사용되는 밸브에서 배관의 절단없이 밸브몸체의 상부에 결합된 밸브덮개를 개방하여 볼 및 시트조립체 등을 분해, 정비가 용이하게 이루어질 수 있다.As a technical idea for achieving the present invention, the decomposition and maintenance type metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less according to the present invention is a valve without cutting of a pipe in a valve used for high temperature and high pressure of a valve grade of 4500 or less. By opening the valve cover coupled to the upper part of the body, the ball and seat assembly can be easily disassembled and maintained.

도 1은 본 발명에 따른 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브의 단면도.
도 2는 본 발명에 따른 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브의 요부 사시도.
도 3은 본 발명에 따른 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브의 시트조립체의 요부 단면도.1 is a cross-sectional view of an overhaul type metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less according to the present invention.
Figure 2 is a perspective view of the main parts of the disassembled and serviced metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less according to the present invention.
Figure 3 is a cross-sectional view of the main part of the seat assembly of the disassembled and serviced metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less according to the present invention.

본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술 되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 기재에 의해 정의된다.Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to fully inform the scope of the invention to those who have it, and the invention is defined by the description of the claims.

한편, 본 명세서에서 사용된 용어는 실시예들을 설명하기 위한 것이며 본 발명을 제한하고자 하는 것은 아니다. 본 명세서에서, 단수형은 문구에서 특별히 언급하지 않는 한 복수형도 포함한다. 명세서에서 사용되는 "포함한다(comprises)" 및/또는 "포함하는(comprising)"은 언급된 구성소자, 단계, 동작 및/또는 소자에 하나 이상의 다른 구성소자, 단계, 동작 및/또는 소자의 존재 또는 추가함을 배제하지 않는다. 이하, 첨부된 도면을 참조하여 본 발명의 실시예를 상세히 설명하기로 한다.Meanwhile, terms used in the present specification are for explaining embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, actions and/or elements in the stated component, step, operation and/or element. It does not preclude adding or adding. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브의 단면도이고, 도 2는 본 발명에 따른 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브의 요부 사시도이며, 도 3은 본 발명에 따른 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브의 시트조립체의 요부 단면도이다.1 is a cross-sectional view of a metal ball valve for high temperature and high pressure fluids with a valve grade of 4500 or less according to the present invention, and FIG. 2 is a metal ball valve for high temperature and high pressure fluids with a valve grade of 4500 or less according to the present invention. 3 is a cross-sectional view of the essential parts of the seat assembly of the disassembled and serviced metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less according to the present invention.

도 1 내지 도 3을 참고하면, 본 발명에 따른 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브(100)는, 밸브몸체(110), 볼(120), 시트조립체(130), 스템(140) 및 밸브덮개(150)를 포함한다.1 to 3, the disassembled and repaired metal ball valve 100 for high temperature and high pressure fluid of a valve grade of 4500 or less according to the present invention includes a valve body 110, a ball 120, and a seat assembly 130. , The stem 140 and the valve cover 150.

상기 밸브몸체(110)는, 내부에 챔버(111)가 형성되고, 상기 챔버(111)와 연통되도록 양측에 유체 유입공(112) 및 유체 배출공(113)이 대향 배치되어 있으며, 상기 유체 유입공(112) 및 상기 유체 배출공(113)의 내측에 대향된 한 쌍의 시트조립체 결합부(114)가 마련되어 있으며 중앙 상부에는 밸브몸체(110) 내부로 볼(120)을 수용 결합하는 볼 조립공(115)이 형성되어진 것이다.The valve body 110 has a chamber 111 formed therein, and a fluid inlet hole 112 and a fluid outlet hole 113 are oppositely disposed on both sides so as to communicate with the chamber 111, and the fluid inflow A ball assembly hole for receiving and coupling the ball 120 into the valve body 110 is provided with a pair of seat assembly coupling portions 114 facing the inner side of the ball 112 and the fluid discharge hole 113 (115) was formed.

또한, 상기 유체 유입공(112) 및 유체 배출공(113)에는 배관(200)이 용접결합되어 고온 및 고압에 견딜수 있게 된다.In addition, the pipe 200 is welded to the fluid inlet hole 112 and the fluid outlet hole 113 to withstand high temperature and high pressure.

상기 볼(120)은, 중심을 통과하는 유로(121)를 구비하며, 밸브몸체(110)의 챔버(111)에 결합되어 회전에 의해 유로(121)를 개폐하는 것이다.The ball 120 has a flow path 121 passing through the center, is coupled to the chamber 111 of the valve body 110 to open and close the flow path 121 by rotation.

또한, 상기 볼(120)의 하부에는 지지축(122)이 형성되어 하방지지되며, 상기 지지축(122)의 외측에 부싱(123)이 결합되되, 상기 부싱(123)의 상부에 인디케이터부(123a)가 형성되어 상기 시트하우징(132)의 결합정도를 확인할 수 있도록 한다.In addition, a support shaft 122 is formed at a lower portion of the ball 120 to prevent lowering, and a bushing 123 is coupled to the outside of the support shaft 122, and an indicator part ( 123a) is formed so that the degree of coupling of the seat housing 132 can be checked.

상기 시트조립체(130)는, 상기 볼 조립공(115)을 통해 상기 시트조립체 결합부(114)의 내경에 결합되어 함께 수용 결합된 상기 볼의 외경에 밀착되어진 것으로, 바디씰리테이너(131), 시트하우징(132) 및 시트링(133)을 포함한다.The seat assembly 130 is coupled to the inner diameter of the seat assembly coupling portion 114 through the ball assembly hole 115 and is in close contact with the outer diameter of the balls accommodated together, the body seal retainer 131, the seat It includes a housing 132 and a seat ring 133.

상기 바디씰리테이너(131)는, 외경의 일단에 형성된 제1나사부(131a)가 상기 시트조립체 결합부(114)에 나사결합되고, 상기 제1나사부(131a)의 반대면에 공구에 의해 회전하도록 제1공구결합홈(131b)이 형성되어지며, 내경에 시트하우징 결합공(131c)이 형성되고, 상기 시트하우징 결합공(131c) 보다 직경이 크게 형성된 제1나사공(131d)이 형성되어진 것이다.The body seal retainer 131 is so that the first screw portion 131a formed at one end of the outer diameter is screwed to the seat assembly coupling portion 114 and rotated by a tool on the opposite surface of the first screw portion 131a. A first tool coupling groove (131b) is formed, a seat housing coupling hole (131c) is formed in an inner diameter, and a first screw hole (131d) having a diameter larger than that of the seat housing coupling hole (131c) is formed. .

또한, 상기 바디씰리테이너(131)의 제1나사공(131d)의 후방에는 공간부(131e)가 형성되어 상기 시트하우징(132) 및 시트링(133)이 볼(120)의 반대측으로 분리될 수 있도록 한다.In addition, a space portion 131e is formed at the rear of the first screw hole 131d of the body seal retainer 131 so that the seat housing 132 and the seat ring 133 are separated to the opposite side of the ball 120. To be able to.

상기 시트하우징(132)은, 일측에 형성된 바디부(132a)가 상기 바디씰리테이너(131)의 시트하우징 결합공(131c)에 결합되고, 상기 바디부(132a)에 일체로 형성되어 상기 제1나사공(131d)에 결합되는 제2나사부(132b) 및 제2공구결합홈(132c)이 타측에 형성되며, 내경에 탄성부재(160)가 결합되어진 결합홈(132d)이 형성되어진 것이다.In the seat housing 132, a body portion 132a formed on one side thereof is coupled to a seat housing coupling hole 131c of the body seal retainer 131, and is integrally formed with the body portion 132a. The second screw portion 132b and the second tool coupling groove 132c coupled to the screw hole 131d are formed on the other side, and a coupling groove 132d to which the elastic member 160 is coupled to the inner diameter is formed.

또한, 상기 탄성부재(160)는 적어도 하나 이상의 판스프링으로 이루어진 일정한압력으로 시트링(133)을 볼(120)에 가압시키게 된다.In addition, the elastic member 160 presses the seat ring 133 against the ball 120 with a constant pressure made of at least one leaf spring.

또한, 상기 시트하우징(132)의 결합홈(132d)에는 탄성부재(160)와 함께 패킹(161)이 결합되도록 하여 고압 및 고온의 유체가 탄성부재(160)에 의해 외부로 누출되는 것을 사전에 차단하는 역활을 하게 된다.In addition, the packing 161 together with the elastic member 160 is coupled to the coupling groove 132d of the seat housing 132 to prevent leakage of high pressure and high temperature fluid to the outside by the elastic member 160 in advance. It plays the role of blocking.

상기 시트링(133)은, 상기 시트하우징(132)의 내측에 결합되고, 상기 탄성부재(160)에 의해 볼(120)에 밀착되어지는 것이다.The seat ring 133 is coupled to the inside of the seat housing 132 and is in close contact with the ball 120 by the elastic member 160.

상기 스템(140)은, 상기 볼(120)을 회전시키도록 상기 볼(120)의 상부에 일단이 결합되어진 것이다.One end of the stem 140 is coupled to an upper portion of the ball 120 so as to rotate the ball 120.

상기 밸브덮개(150)는, 상기 스템(140)이 결합되는 수직공(151)이 형성되고, 상기 볼 조립공(115)을 폐쇄시키는 것이다.The valve cover 150 is formed with a vertical hole 151 to which the stem 140 is coupled, and closes the ball assembly hole 115.

또한, 상기 밸브덮개(150)의 수직공(151)의 하측에는 단턱부(152)가 형성되어 상기 스템(140)의 외경에 대응되도록 하고, 밸브 내부에서 유동되는 고온 및 고압의 유체에 대해 패킹(141)을 보호하도록 하는 것이다.In addition, a stepped portion 152 is formed on the lower side of the vertical hole 151 of the valve cover 150 to correspond to the outer diameter of the stem 140, and is packed for high temperature and high pressure fluid flowing inside the valve. It is to protect (141).

그리고, 본 발명은 고온 및 고압에 적용하기 위해서 사용됨으로 유체 차단 밀봉부인 볼(120)과 시트링(133)은 크롬-카바이드(Chromium-Cardide)용사 코팅과 물리증착법(PVD) 코팅을 적용하여 고온 내마모성을 부여하여 밸브 수명을 연장 한다.In addition, since the present invention is used to apply to high temperature and high pressure, the ball 120 and the seat ring 133, which are fluid barrier seals, are applied to a high temperature by applying a chromium-cardide spray coating and a physical vapor deposition (PVD) coating. Prolongs valve life by giving wear resistance.

또한, 볼(120)과 시트링(133) 분해를 위해 설치한 시트하우징(132)과 바디씰리테이너(131)의 재질은 내열성을 구비한 ASTM A565-Grade 616 또는 니켈 합금강을 사용하고 분해 공간을 얻기 위한 간격 벌림과 좁힘을 위한 제1나사부(131a) 및 제2나사부(132b)는 고온부식(High Temperature Corrosion) 및 접동면마모(Galling) 방지를 위해 물리증착법(PVD) 코팅을 수행한다.In addition, the material of the seat housing 132 and the body seal retainer 131 installed for disassembly of the ball 120 and the seat ring 133 is ASTM A565-Grade 616 or nickel alloy steel with heat resistance and a decomposition space. The first screw portion 131a and the second screw portion 132b for widening and narrowing the gap to obtain a physical vapor deposition method (PVD) coating is performed to prevent high temperature corrosion and sliding surface wear (Galling).

또한, 밸브몸체(110) 및 밸브덮개(150)의 재질은 사용압력 및 온도에 준한 ASME/ANSI 16.34의 소재를 선정한다. In addition, as the material of the valve body 110 and the valve cover 150, the material of ASME/ANSI 16.34 is selected according to the working pressure and temperature.

한편, 미설명부호 170은 밸브덮개 커버, 171은 세그멘트 링, 172는 가스켓을 나타낸다.Meanwhile, reference numeral 170 denotes a valve cover cover, 171 a segment ring, and 172 a gasket.

이와 같이 구성된 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브(100)는 고온 및 고압이 사용되는 화력발전소 등에 설치되는 것으로 밸브몸체(110)의 양측에 유체 유입공(112)과 유체 배출공(113)이 배관(200)에 용접되어 있고, 사용중에 볼(120) 및 시트조립체(130) 등을 수리 및 교환하기 위한 긴급정비가 요구될 경우 전단에 설치된 밸브를 차단한 후 밸브몸체(110)의 내부의 볼(120) 및 시트조립체(130) 등을 분해하게 된다.The disassembly and maintenance type metal ball valve 100 for high temperature and high pressure fluid with a valve grade of 4500 or less constructed as described above is installed in a thermal power plant where high temperature and high pressure is used, and fluid inlet holes 112 and fluid inlet holes 112 are provided on both sides of the valve body 110. When the fluid discharge hole 113 is welded to the pipe 200 and urgent maintenance for repairing and replacing the ball 120 and the seat assembly 130 is required during use, the valve installed in the front end is shut off and the valve The ball 120 and the seat assembly 130 inside the body 110 are disassembled.

먼저, 밸브몸체(110)의 상부에 결합되어진 밸브덮개 커버(170)를 고정하고 있던 볼트를 분리하게 되고, 이로 인해 밸브몸체(110)의 볼 조립공(115)에 결합되어져 있던 세그멘트 링(171) 및 가스켓(172)을 분리한 후 밸브덮개(150)를 분리함과 아울러 스템(140)도 분리하게 된다.First, the bolt that was fixing the valve cover cover 170 coupled to the upper portion of the valve body 110 is removed, and thus the segment ring 171 coupled to the ball assembly hole 115 of the valve body 110 And after separating the gasket 172, the valve cover 150 is separated, and the stem 140 is also separated.

상기 스템(140)이 분리되어지면 밸브몸체(110)의 챔버(111)에 설치된 볼(120)이 분리될 수 있는데, 이때 볼(120)의 양측을 가압하고 있던 시트링(133)을 분리하기 위해 시트하우징(132)의 제2공구결합홈(132c)을 이용하여 공구로 상기 시트하우징(132)을 볼(120)의 외측으로 이동시키게 되면 제2나사부(132b)가 이동되면서 공간부(131e)로 이동되어지게 되면 압축되어져 있던 탄성부재(160)의 압축력이 해제되어 볼(120) 및 시트링(133)을 분리하게 된다.When the stem 140 is separated, the ball 120 installed in the chamber 111 of the valve body 110 may be separated. At this time, to separate the seat ring 133 that was pressing both sides of the ball 120 For this purpose, when the seat housing 132 is moved to the outside of the ball 120 using a tool using the second tool coupling groove 132c of the seat housing 132, the second screw part 132b is moved and the space part 131e ), the compressive force of the elastic member 160 that has been compressed is released to separate the ball 120 and the seat ring 133.

상기 시트링(133)이 분리되어지면, 탄성부재(160) 및 패킹(161)도 분리되고, 그 이후 시트하우징(132)의 제2공구결합홈(132c)을 이용하여 공구로 상기 시트하우징(132)을 볼의 내측방향으로 이동시켜 시트하우징(132)을 분리하게 된다.When the seat ring 133 is separated, the elastic member 160 and the packing 161 are also separated, and thereafter, the seat housing ( The seat housing 132 is separated by moving 132 in the inner direction of the ball.

상기 시트하우징(132)이 분리되어지면, 바디씰리테이너(131)의 제1공구결합홈(131b)을 이용하여 공구로 상기 바디씰리테이너(131)를 볼(120)의 내측방향으로 이동시켜 분리하게 된다.When the seat housing 132 is separated, the body seal retainer 131 is moved in the inner direction of the ball 120 using the first tool coupling groove 131b of the body seal retainer 131 and separated. It is done.

그리고, 상기와 같이 분리된 부품등을 교환 및 수리를 끝내고 난 이후에는 분해의 역순으로 조립이 이루어지게 된다.In addition, after replacement and repair of the separated parts as described above are completed, assembly is performed in the reverse order of disassembly.

본 발명은 첨부된 도면에 도시된 일 실시예를 참고로 설명한 것이나, 당해 기술 분야의 통상의 지식을 가진 자들에게는 다양한 변형 및 다른 실시예가 가능하다는 점이 이해될 것이다.Although the present invention has been described with reference to one embodiment illustrated in the accompanying drawings, it will be understood that various modifications and other embodiments are possible for those of ordinary skill in the art.

100: 밸브등급 4500 고온 및 고압 유체용 분해정비형 메탈 볼밸브
110: 밸브몸체 111: 챔버
112: 유체 유입공 113: 유체 배출공
114: 시트조립체 결합부 115: 볼조립공
120: 볼 121: 유로
122: 지지축 123: 부싱
123a: 인디케이터부 130: 시트조립체
131: 바디씰리테이너 131a: 제1나사부
131b: 제1공구결합홈 131c: 시트하우징 결합공
131d: 제1나사공 131e: 공간부
132: 시트하우징 132a: 바디부
132b: 제2나사부 132c: 제2공구결합홈
132d: 결합홈 133: 시트링
140: 스템 150: 밸브덮개
151: 수직공 160: 탄성부재
161: 패킹 200: 배관100: valve grade 4500 disassembled metal ball valve for high temperature and high pressure fluids
110: valve body 111: chamber
112: fluid inlet hole 113: fluid outlet hole
114: seat assembly coupling portion 115: ball assembly hole
120: ball 121: euro
122: support shaft 123: bushing
123a: indicator unit 130: sheet assembly
131: body seal retainer 131a: first screw portion
131b: first tool coupling groove 131c: seat housing coupling hole
131d: first screw hole 131e: space
132: seat housing 132a: body portion
132b: second screw portion 132c: second tool coupling groove
132d: coupling groove 133: seat ring
140: stem 150: valve cover
151: vertical hole 160: elastic member
161: packing 200: piping

Claims (9)

내부에 챔버가 형성되고, 상기 챔버와 연통되도록 양측에 유체 유입공 및 유체 배출공이 대향 배치되어 있으며, 상기 유체 유입공 및 상기 유체 배출공의 내측에 대향된 한 쌍의 시트조립체 결합부가 마련되어 있으며 중앙 상부에는 밸브몸체 내부로 볼을 수용 결합하는 볼 조립공이 형성되어진 밸브몸체;
중심을 통과하는 유로를 구비하며, 밸브몸체의 챔버에 결합되어 회전에 의해 유로를 개폐하는 볼;
상기 볼 조립공을 통해 상기 시트조립체 결합부의 내경에 결합되어 함께 수용 결합된 상기 볼의 외경에 밀착되어진 시트조립체;
상기 볼을 회전시키도록 상기 볼의 상부에 일단이 결합되어진 스템;
상기 스템이 결합되는 수직공이 형성되고, 상기 볼 조립공을 폐쇄시키는 밸브덮개; 를 포함하며,
상기 유체 유입공 및 유체 배출공에는 배관이 용접결합되고,
상기 시트조립체는,
외경의 일단에 형성된 제1나사부가 상기 시트조립체 결합부에 나사결합되고, 상기 제1나사부의 반대면에 공구에 의해 회전하도록 제1공구결합홈이 형성되어지며, 내경에 시트하우징 결합공이 형성되고, 상기 시트하우징 결합공보다 직경이 크게 형성된 제1나사공이 형성되어진 바디씰리테이너와,
일측에 형성된 바디부가 상기 바디씰리테이너의 시트하우징 결합공에 결합되고, 상기 바디부에 일체로 형성되어 상기 제1나사공에 결합되는 제2나사부 및 제2공구결합홈이 타측에 형성되며, 내경에 탄성부재가 결합되어진 결합홈이 형성되어진 시트하우징과,
상기 시트하우징의 내측에 결합되고, 상기 탄성부재에 의해 볼에 밀착되어지는 시트링을 포함하는 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.
A chamber is formed inside, a fluid inlet hole and a fluid outlet hole are oppositely arranged on both sides to communicate with the chamber, and a pair of seat assembly coupling portions opposite to the inner side of the fluid inlet hole and the fluid discharge hole are provided, and the center A valve body in which a ball assembly hole for receiving and coupling the ball into the valve body is formed on the upper part;
A ball having a flow path passing through the center and coupled to the chamber of the valve body to open and close the flow path by rotation;
A seat assembly coupled to the inner diameter of the seat assembly coupling portion through the ball assembly hole and in close contact with the outer diameter of the balls accommodated together;
A stem having one end coupled to the top of the ball to rotate the ball;
A valve cover having a vertical hole to which the stem is coupled, and closing the ball assembly hole; Including,
A pipe is welded to the fluid inlet hole and the fluid outlet hole,
The sheet assembly,
A first screw portion formed at one end of the outer diameter is screwed to the seat assembly coupling portion, a first tool coupling groove is formed to rotate by a tool on the opposite surface of the first screw portion, and a seat housing coupling hole is formed in the inner diameter. , A body seal retainer having a first screw hole having a diameter larger than that of the seat housing coupling hole,
The body portion formed on one side is coupled to the seat housing coupling hole of the body seal retainer, and a second screw portion and a second tool coupling groove formed integrally with the body portion and coupled to the first screw hole are formed on the other side, and the inner diameter A seat housing in which a coupling groove to which an elastic member is coupled is formed,
A disassembled and serviced metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less, comprising a seat ring coupled to the inner side of the seat housing and in close contact with the ball by the elastic member.
 제1항에 있어서,
상기 바디씰리테이너의 제1나사공의 후방에는 공간부가 형성되어 상기 시트하우징 및 시트링이 볼의 반대측으로 분리될 수 있도록 하는 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.
The method of claim 1,
Disassembled and repaired metal for high temperature and high pressure fluids of a valve grade of 4500 or less, characterized in that a space is formed at the rear of the first screw hole of the body seal retainer so that the seat housing and the seat ring can be separated to the opposite side of the ball. Ball valve.
 제1항에 있어서,
상기 탄성부재는 적어도 하나 이상의 판스프링으로 이루어진 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.
The method of claim 1,
The elastic member is a disassembled and repaired metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less, characterized in that the elastic member is made of at least one leaf spring.
 제1항에 있어서,
상기 시트하우징의 결합홈에는 탄성부재와 함께 패킹이 결합되어진 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.
The method of claim 1,
A disassembly and maintenance metal ball valve for high temperature and high pressure fluids of a valve grade of 4500 or less, characterized in that a packing is coupled with an elastic member in the coupling groove of the seat housing.
 제1항에 있어서,
상기 밸브덮개의 수직공의 하측에는 단턱부가 형성되어 상기 스템의 외경에 대응되도록 하고, 밸브 내부에서 유동되는 고온 및 고압의 유체에 대해 패킹을 보호하도록 하는 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.
The method of claim 1,
A stepped portion is formed on the lower side of the vertical hole of the valve cover to correspond to the outer diameter of the stem, and to protect the packing against high temperature and high pressure fluid flowing inside the valve. Disassembly and maintenance type metal ball valve for high pressure fluids.
 제1항에 있어서,
상기 볼의 하부에는 지지축이 형성되어 하방지지되며, 상기 지지축의 외측에 부싱이 결합되되, 상기 부싱의 상부 인디케이터부가 형성되어 상기 시트하우징의 결합정도를 확인할 수 있도록 하는 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.
The method of claim 1,
Valve grade 4500, characterized in that a support shaft is formed in the lower part of the ball to prevent downward support, and a bushing is coupled to the outside of the support shaft, and an upper indicator part of the bushing is formed so that the degree of coupling of the seat housing can be checked. Disassembly and maintenance type metal ball valves for the following high-temperature and high-pressure fluids.
 제1항에 있어서,
상기 볼과 시트링은 크롬-카바이드(Chromium-Cardide)용사 코팅과 물리증착법(PVD) 코팅을 적용하여 고온 내마모성을 부여하도록 하는 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.The method of claim 1,
The ball and seat ring are disassembled and repaired metals for high temperature and high pressure fluids of a valve grade of 4500 or less, characterized in that a chromium-carbide spray coating and a physical vapor deposition (PVD) coating are applied to impart high-temperature wear resistance Ball valve. 제1항에 있어서,
상기 시트하우징과 바디씰리테이너의 재질은 내열성을 구비한 ASTM A565-Grade 616 또는 니켈 합금강을 사용하도록 하는 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.
The method of claim 1,
The material of the seat housing and the body seal retainer is ASTM A565-Grade 616 or nickel alloy steel having heat resistance.
 제1항에 있어서,
상기 제1나사부 및 제2나사부는 고온부식(High Temperature Corrosion) 및 접동면마모(Galling) 방지를 위해 물리증착법(PVD) 코팅을 수행하도록 하는 것을 특징으로 하는 밸브등급 4500 이하의 고온 및 고압 유체용 분해정비형 메탈 볼밸브.The method of claim 1,
For high temperature and high pressure fluids of a valve grade of 4500 or less, characterized in that the first screw part and the second screw part perform physical vapor deposition (PVD) coating to prevent high temperature corrosion and sliding surface wear. Disassembly and maintenance type metal ball valve.
KR1020210000931A 2021-01-05 2021-01-05 Metal ball valve resolving and maintenance type for high temperature and high pressure liquid flow with sub Valve Class Number 4500 KR102259180B1 (en)

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