KR20020037392A - Metal seat type butterfly valve having a triple offset structure - Google Patents

Metal seat type butterfly valve having a triple offset structure Download PDF

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Publication number
KR20020037392A
KR20020037392A KR1020000067300A KR20000067300A KR20020037392A KR 20020037392 A KR20020037392 A KR 20020037392A KR 1020000067300 A KR1020000067300 A KR 1020000067300A KR 20000067300 A KR20000067300 A KR 20000067300A KR 20020037392 A KR20020037392 A KR 20020037392A
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KR
South Korea
Prior art keywords
valve
line
seat
eccentric structure
eccentric
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KR1020000067300A
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Korean (ko)
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KR100387306B1 (en
Inventor
김선규
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유서광
범한금속공업(주)
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Priority to KR10-2000-0067300A priority Critical patent/KR100387306B1/en
Publication of KR20020037392A publication Critical patent/KR20020037392A/en
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Publication of KR100387306B1 publication Critical patent/KR100387306B1/en

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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/222—Shaping of the valve member
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

PURPOSE: A butterfly valve of a metal sheet having eccentric structure of three orders is provided to keep excellent air tightness in condition of fluid flowing of both sides in condition of cryogen, high temperature, and high pressure as well as ordinary temperature. CONSTITUTION: A butterfly valve of a metal sheet has an eccentric structure of three orders. A first eccentric structure is to transfer a valve lever(13), a rotating axis of a valve disk(12), from E-E' line, a centerline of a sheet part of a valve body having a sheet(14) inside, as eccentric as "a". A second eccentric structure is to transfer the centerline of diameter of the sheet part in the body of the valve from D-D' line, a centerline of the valve lever, as eccentric as "f". A third eccentric structure is to rotate C-C' line, a base axis line of the conical valve disk as rotary as a fixed angle(a) and transfer C-C' line as axis as "c". The valve disk is made wedged.

Description

삼차 편심구조를 갖는 메탈시트형 버터플라이밸브{METAL SEAT TYPE BUTTERFLY VALVE HAVING A TRIPLE OFFSET STRUCTURE}Metal seat type butterfly valve with tertiary eccentric structure {METAL SEAT TYPE BUTTERFLY VALVE HAVING A TRIPLE OFFSET STRUCTURE}

본 발명은 배관과 연결되어 유량을 제어 또는 차단하는 버터플라이밸브에 관한 것으로, 보다 상세하게는 상온에서 뿐만 아니라 초저온, 고온 및 고압 조건하의 양방향 유체흐름조건하에서도 우수한 기밀성을 유지할 수 있도록 한 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브에 관한 것이다.The present invention relates to a butterfly valve that is connected to the pipe to control or block the flow rate, and more particularly, the third eccentric to maintain excellent airtightness at room temperature as well as in two-way fluid flow conditions under ultra-low temperature, high temperature and high pressure conditions It relates to a metal seat type butterfly valve having a structure.

종래에는 도1과 같이, 밸브디스크(12)의 회전축인 밸브대(13)를 기밀부인 시트(14)가 개재되는 밸브몸통 시트부의 중심선인 E-E′라인으로부터 “a ”만큼 일차 편심시키는 동시에 밸브에 유로중심선인 A-A′라인으로부터 “b ”만큼 편심시킨 이차편심구조를 갖도록 하고, 밸브의 유로중심선 A-A′라인과 몸통 시트부 중심선 E-E′라인과의 교점을 기준으로 하여 원추형 밸브디스크의 기준축선 C-C′를 소정 각도만큼 회전시킨 다음 상기 기준축선을 “c ”만큼 축이동(C1-C1′)시켜 삼차 편심구조를 이루도록 구성되어 있는 바, 이와 같이 밸브디스크의 기준축선을 편심시켜서 되는 삼차 편심 구조는 배관 설치시 이차 축편심에 따른 볼트 체결상의 간섭이 발생하는 등의 문제점이 있다.Conventionally, as shown in Fig. 1, the valve stem 13, which is the rotating shaft of the valve disc 12, is firstly eccentric by “a” from the line EE ', which is the center line of the valve body seat portion, through which the seat 14, which is an airtight portion, is provided. It has a secondary eccentric structure eccentrically “b” from the AA 'line, which is the center line of the flow path, and the reference axis CC ′ of the conical valve disc based on the intersection of the flow center line AA ′ of the valve with the center line EE ′ of the body seat. Is rotated by a predetermined angle and then the reference axis is moved by the axis “c” (C 1 -C 1 ′) to form a tertiary eccentric structure. Thus, the tertiary eccentric structure is obtained by eccentric the reference axis of the valve disc. There is a problem such as interference occurs in the fastening of the bolt according to the secondary shaft eccentricity when installing the pipe.

본 발명은 상기와 같은 종래의 문제점이 해소된 더욱 개선된 삼차 편심구조를 갖는 메틸시트형 버터플라이밸브를 제공할 목적에서 창출된 것으로, 밸브디스크(12)의 회전축인 밸브대(13)를 기밀부인 시트가 개재되는 밸브몸통 시트부의 중심선E-E′라인으로부터 “a ”만큼 일차편심시킨 상태에서 기존 밸브에 있어서의 이차편심구조인 배관의 유로중심선인 A-A′라인으로부터 밸브대를 “b ”만큼 이차편심시키는 대신에 밸브의 회전축인 밸브대를 유로관로의 중심에 두고 밸브대 중심선인 D-D′라인으로부터 밸브몸통의 시트부를 “f ”만큼 편심을 부여함으로써 기존의 이차편심구조의 특징을 유지하고, 이를 토대로 다시 밸브의 유로중심선 A-A′라인과 밸브몸통 시트부 중심선 E-E′라인과의 교점 “0 ”을 기준점으로 하여 원추형 밸브디스크의 기준축선 C-C′라인을 소정 각도(α)만큼 회전시킨 다음 상기 기준축선 C-C′라인을 “c ”만큼 축이동(C1-C1′)시켜 삼차 편심구조를 이루도록 함으로써 기존의 밸브에서 밀폐시 발생되는 러빙현상에 따른 시트부의 마모를 보완하며, 회전축인 밸브대를 밸브몸통의 중심부에 위치시킴으로써 기존의 삼차 편심형 밸브에 있어서의 배관 설치시 볼트 체결상의 간섭을 없앨 수 있는 것등의 효과를 가진 새로운 형태의 삼중편심형 구조의 버터플라이밸브로서, 특히 시트(14)부를 금속재로 구성할 수 있게 함으로써 고온, 고압 및 초저온의 조건하에서도 변형을 최소화하여 충분한 기밀성을 유지할 수 있도록 도모하였다.The present invention has been made in order to provide a methyl seated butterfly valve having a further improved tertiary eccentric structure in which the conventional problems as described above are solved, and the valve stem 13, which is a rotation shaft of the valve disc 12, is an airtight part. The valve stem is “b” secondary from the AA 'line, which is the channel center line of the pipe, which is the secondary eccentric structure of the existing valve, with the primary eccentricity “a” from the center line EE ′ line of the valve body seat portion where the seat is interposed. Instead, the valve stem, which is the axis of rotation of the valve, is centered in the flow path and the seat portion of the valve body is eccentrically “f” from the DD 'line, which is the valve stem center line, to maintain the characteristics of the existing secondary eccentric structure. Reference axis of conical valve disc with reference point “0” between flow path center line AA 'of valve and seat body center line EE' of valve body After the CC 'line is rotated by a predetermined angle (α), the reference axis CC' line is moved axially (C 1 -C 1 ′) by “c” to form a tertiary eccentric structure. The new form has the effect of compensating the wear of the seat part due to the phenomenon and eliminating the interference on the bolting when installing the pipe in the existing tertiary eccentric valve by placing the valve stem, which is the rotating shaft, in the center of the valve body. As a butterfly valve of a triple eccentric structure of, the seat 14 part can be made of a metal material, so that the deformation can be minimized even under high temperature, high pressure and ultra low temperature conditions to maintain sufficient airtightness.

즉, 본 발명은 기본적으로 유체의 흐름조건에 제약을 받지 않아 양방향 흐름조건 및 고온, 고압 또는 초저온의 조건하에서도 우수한 기밀특성을 구유함과 동시에 운반 및 협소한 공간에서도 시공이 용이한 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브를 제공함에 그 목적이 있다.That is, the present invention is basically not limited by the flow conditions of the fluid, while maintaining the excellent airtight characteristics even under the conditions of bidirectional flow conditions and high temperature, high pressure or ultra low temperature, and at the same time easy to install and transport in a narrow space, the third eccentric structure The purpose is to provide a metal seat-type butterfly valve having a.

본 발명의 또 다른 목적은 시트부를 밸브몸통 혹은 밸브디스크에 일체형으로 형성하거나, 일체형 금속시트링 형태로 제조하거나, 혹은 금속적층형 시트링을 포함하는 구성으로 형성함으로써 제조원가를 현저히 절감시킴과 동시에 기밀성은 극대화시킬 수 있도록한 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브를 제공함에 있다.Still another object of the present invention is to reduce the manufacturing cost and improve airtightness by forming the seat part integrally with the valve body or the valve disc, manufacturing it in the form of an integral metal seat ring, or by forming a structure including a metal laminated seat ring. It is to provide a metal seat type butterfly valve having a tertiary eccentric structure to maximize.

도1은 종래 삼차 편심구조를 갖는 버터플라이밸브의 구성을 도시한 단면도,1 is a cross-sectional view showing the configuration of a butterfly valve having a conventional tertiary eccentric structure;

도2는 본 발명에 따른 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브의 구성을 도시한 단면도,2 is a cross-sectional view showing the configuration of a metal seat type butterfly valve having a tertiary eccentric structure according to the present invention;

도3은 본 발명에 따른 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브에 적용될 수 있는 시트링 형상의 한 예를 보인 도식적인 단면도.Figure 3 is a schematic cross-sectional view showing an example of a seat ring shape that can be applied to a metal seat type butterfly valve having a tertiary eccentric structure according to the present invention.

** 도면중 주요부분에 대한 부호의 설명 **** Explanation of symbols for main parts of the drawing **

11 : 밸브몸통, 12 : 밸브디스크,11: valve body, 12: valve disc,

13 : 밸브대, 14 : 시트,13 valve seat, 14 seat,

15 : 리테이너, 16 : 디스크시트링,15: retainer, 16: disk seating,

17 : 리테이닝볼트, 18 : 가스켓,17: retaining bolt, 18: gasket,

19 : 금속재박판, 20 : 기밀재.19: thin metal plate, 20: hermetic material.

상기 본 발명의 목적은 밸브디스크의 회전축인 밸브대를 기밀부인 시트가 개재되는 밸브몸통 시트부의 중심선으로부터 “a ”만큼 일차 편심시킨 상태에서 밸브의 회전축인 밸브대를 중심으로 밸브몸통의 시트부를 “f ”만큼 이차 편심시킨 편심구조를 갖고, 상기 밸브디스크와 밸브몸통 사이에는 이들을 긴밀하게 밀폐하는 밸브 시트를 포함하는 버터플라이밸브에 있어서, 상기 밸브대가 이차 편심구조를 갖는 상태에서 밸브의 유로중심선과 몸통중심선의 교점을 기준점으로 하여 원추형 밸브디스크의 기준축선을 소정 각도만큼 회전시킨 다음 상기 기준축선을 “c ”만큼 축이동시켜 삼차 편심구조를 이루도록 함에 의해 달성된다.The object of the present invention is that the seat portion of the valve body around the valve stem which is the axis of rotation of the valve in the state in which the valve stem, which is the rotation axis of the valve disc, is eccentrically "a" from the center line of the valve body seat portion in which the seat which is the airtight portion is interposed " A butterfly valve having an eccentric structure secondary to eccentricity and having a valve seat which tightly seals the valve disk and the valve body, wherein the valve seat has a secondary eccentric structure. This is achieved by rotating the reference axis of the conical valve disc by a predetermined angle with the intersection of the body center line as a reference point and then moving the reference axis by “c” to form a tertiary eccentric structure.

이하에서는, 본 발명에 따른 바람직한 일 실시예를 첨부도면에 의거하여 보다 상세하게 설명한다.Hereinafter, a preferred embodiment according to the present invention will be described in more detail on the basis of the accompanying drawings.

도2는 본 발명에 따른 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브의 시트부를 도시한 단면도이다.2 is a cross-sectional view showing a seat portion of a metal seat type butterfly valve having a tertiary eccentric structure according to the present invention.

도시된 바에 따르면, 밸브디스크(12)의 회전축인 밸브대(13)를 기밀부인 시트(14)가 개재되는 밸브몸통 시트부의 중심선인 E-E′라인으로부터 “a ”만큼 편심시켜 기존과 같이 일차 편심구조를 갖도록 한다.As shown in the drawing, the valve stem 13, which is the axis of rotation of the valve disc 12, is eccentrically “a” from the EE 'line, which is the center line of the valve body seat portion, through which the seat 14, which is an airtight portion, is eccentric. To have.

이 상태에서 밸브의 회전축인 밸브대(13)의 중심선인 D-D′라인으로부터 밸브몸통의 시트부를 “f ”만큼 편심시켜 이차 편심구조를 이루도록 한다.In this state, the seat portion of the valve body is eccentrically "f" from the line D-D ', which is the center line of the valve stem 13, which is the rotation axis of the valve, to form a secondary eccentric structure.

이어, 밸브의 유로 중심선 A-A′라인과 몸통 시트부 중심선 E-E′라인의 교점인 “0 ”점을 기준점으로 하여 원추형 밸브디스크(12)의 기준축선인 C-C′라인을 소정 각도(α)만큼 회전시킨다.Subsequently, the CC 'line, which is the reference axis of the conical valve disc 12, is rotated by a predetermined angle with reference to the point “0”, which is an intersection point between the flow path center line AA' of the valve and the line EE 'of the body seat portion. .

그런 후에, 상기 기준축선인 C-C′라인을 “c ”만큼 축이동(C1-C1′)시켜 편심시킴으로써 삼차 편심구조를 이루도록 한다.Then, to the reference axis of the CC 'line the "c" axis moves by (C 1 -C 1') to achieve the tertiary structure of the eccentric by the eccentricity.

이렇게 함으로써 상기 밸브디스크(12)는 쐐기형(WEDGE)을 이루도록 구성되며, 어느정도의 유격을 갖게 되므로 유체의 양방향 흐름조건에 대해서도 우수한 기밀을 유지한 채 사용가능하게 된다.By doing so, the valve disc 12 is configured to form a wedge shape, and has a certain amount of clearance, so that the valve disc 12 can be used while maintaining excellent airtightness even under bidirectional flow conditions of the fluid.

여기에서, 편심량 a,c 및 f는 밸브의 제작조건에 따라 그 비율이 달리 적용될 수 있다.Here, the ratio of the eccentricity a, c and f may be applied differently depending on the manufacturing conditions of the valve.

도3은 본 발명에 따른 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브에 적용될 수 있는 시트링 형상의 한 예를 보인 도식적인 단면도이다.3 is a schematic cross-sectional view showing an example of a seat ring shape that can be applied to a metal seated butterfly valve having a tertiary eccentric structure according to the present invention.

상기 도면에 따르면, 밸브디스크(12)의 밸브대(13) 대향면에는 리테이너(15)가 부착되는 바, 상기 리테이너(15)는 리테이닝볼트(17)에 의해 밸브디스크(12)에 대해 고정된다.According to the figure, a retainer 15 is attached to a surface opposite the valve stem 13 of the valve disc 12, and the retainer 15 is fixed to the valve disc 12 by a retaining bolt 17. do.

그리고, 상기 리테이너(15)가 체결되는 부위에는 가스켓(18)이 개재된다.In addition, a gasket 18 is interposed at a portion at which the retainer 15 is fastened.

상기 밸브디스크(12)의 둘레 중심부에는 디스크시트링(16)이 설치되는 바, 이 디스크시트링(16)은 밸브몸통쪽의 시트(14)와 접촉되면서 기밀이 충분하고 긴밀하게 유지되도록 하여 준다.The disc seat ring 16 is installed at the circumferential center of the valve disc 12, and the disc seat ring 16 is in contact with the seat 14 on the valve body side to maintain sufficient airtightness. .

상기 디스크시트링(16)은 시트재인 금속을 일체형으로 형성한 일체형 금속시트링으로 형성될 수 있으며, 또한 금속재박판(19)을 기밀재(20)와 적층시켜(LAMINATE SHEET) 형성한 금속적층형 시트링으로 형성할 수도 있다.The disk seat ring 16 may be formed of an integral metal sheet ring in which a metal, which is a sheet material, is integrally formed, and a metal laminated sheet formed by laminating a metal sheet 19 with an airtight material 20 (LAMINATE SHEET). It may be formed by a ring.

이와 같은 시트부 구조를 갖도록 함으로써 삼차 편심구조에 기한 밸브디스크(12)의 유동시 몸통 시트(14)와 디스크시트링(16) 간의 러빙현상을 최소화함으로써 시트부의 마손(磨損)을 극소화시키고 작동토크를 최소화시킬 수 있게 된다.By having such a seat structure, the rubbing phenomenon between the body seat 14 and the disc seat ring 16 during the flow of the valve disc 12 due to the tertiary eccentric structure is minimized, thereby minimizing the wear and tear of the seat portion and operating torque. Can be minimized.

아울러, 상기 시트부의 소재를 금속재로 사용함으로써 초저온, 고온 및 고압의 유체 조건에서 뿐만 아니라 화재 발생시에도 안정적인차단기능을 유지할 수 있어 발전소, 석유화학 및 가스산업 등의 각종 플랜트에 광범위하게 사용가능하다.In addition, by using the material of the sheet portion as a metal material, it is possible to maintain a stable blocking function not only in the ultra low temperature, high temperature and high pressure fluid conditions, but also in the event of a fire, which can be widely used in various plants such as power plants, petrochemical and gas industries.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브는 다음과 같은 효과를 제공한다.As described in detail above, the metal seat-type butterfly valve having a tertiary eccentric structure according to the present invention provides the following effects.

첫째, 밸브디스크를 밸브의 유로 중심선과 시트부 중심선의 교점을 기준점으로 하여 원추형 밸브디스크의 기준축선을 소정 각도만큼 회전시킨 후 상기 기준축선을 소정 거리 축이동 편심시켜 삼차 편심구조를 갖도록 함으로써 밸브디스크의 기민한 운동성이 확보되어 양방향 유체흐름에 대한 차단기능을 구유하게 된 장점을 가진다.First, by rotating the reference axis of the conical valve disk by a predetermined angle with the valve disk as the reference point of the intersection of the flow path center line of the valve and the center of the seat portion, the reference axis is shifted by a predetermined distance axis so as to have a tertiary eccentric structure. Its agile motility ensures that it has a barrier to bidirectional fluid flow.

둘째, 밸브의 회전축인 밸브대를 밸브몸통의 중심부에 위치하도록 함으로써 기존의 이,삼차 편심형 밸브에 있어서 배관 설치시 문제점으로 제기된 이차 축편심에 따른 볼트 체결상의 간섭으로부터 자유로와지는 장점을 가진다.Second, the valve stem, which is the axis of rotation of the valve, is positioned at the center of the valve body, which has the advantage of being free from interference on the bolting due to the secondary eccentricity, which is a problem in installing the pipe in the conventional secondary and tertiary eccentric valves. .

셋째, 시트부에서의 러빙현상에 의한 마손을 최소화하고 작동토크를 줄이며, 초저온, 고압, 고온에서도 용이하게 활용될 수 있는 장점을 제공한다.Third, it minimizes the wear and tear caused by the rubbing phenomenon in the seat portion, and provides an advantage that can be easily utilized even in ultra low temperature, high pressure, high temperature.

넷째, 연질의 시트재를 사용하는 기존의 밸브와는 달리 금속재로 된 시트를 사용함으로써 변형이 최소화되고 특히 화재발생시에도 안정적인 차단기능을 유지할 수 있어 배관계통의 안전을 도모할 수 있으므로 일반적인 게이트밸브나 볼밸브를 효과적으로 대체할 수 있다는 장점을 제공한다.Fourth, unlike conventional valves using soft seat materials, the seats made of metal are used to minimize deformation and maintain a stable shut-off function even in the event of a fire. It offers the advantage of being an effective alternative to ball valves.

Claims (1)

밸브디스크(12)의 회전축인 밸브대(13)를 기밀부인 시트(14)가 개재되는 밸브몸통 시트부의 중심선인 E-E′라인으로부터 “a ”만큼 일차 편심시킨 상태에서 밸브의 회전축인 밸브대의 중심선 D-D′라인으로부터 밸브몸통의 시트부 직경의 중심선을 “f ”만큼 이차 편심시킨 편심구조를 갖고, 이 상태에서 밸브의 시트 유로중심선인 A-A′과 밸브몸통 시트부 중심선인 E-E′라인의 교점인 “0 ” 점을 기준점으로 하여 원추형 밸브디스크(12)의 기준축선인 C-C′라인을 소정 각도(α)만큼 회전시킨 다음 상기 기준축선인 C-C′라인을 “c”만큼 축이동(C1-C1′)시켜 삼차 편심구조를 이루도록 한 것을 특징으로 하는 삼차 편심구조를 갖는 메탈시트형 버터플라이밸브.Center line DD of the valve stem which is the axis of rotation of the valve in the state which eccentrically "a" from the EE 'line which is the center line of the valve body seat part through which the valve seat 13 which is the rotation axis of the valve disc 12 is interposed by the seat 14 which is airtight. It has an eccentric structure in which the center line of the valve body seat diameter of the valve body is eccentrically by "f" from the line "," and in this state, the intersection point of line AA of the valve flow path center line AA and the valve body seat center line EE line "0". ”Point, the CC 'line, which is the reference axis of the conical valve disc 12, is rotated by a predetermined angle α, and then the CC' line, which is the reference axis, is moved by“ c ”(C 1 -C 1 ′). Metal seat type butterfly valve having a tertiary eccentric structure, characterized in that to achieve a tertiary eccentric structure.
KR10-2000-0067300A 2000-11-14 2000-11-14 Metal seat type butterfly valve having a triple offset structure KR100387306B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101675568B1 (en) 2016-09-09 2016-11-14 (주)아나이엔지 Device for processing seat surface of triple eccentric butterfly valve
KR20200006236A (en) * 2018-07-10 2020-01-20 주식회사 삼신 Manufacturing Method of Triple Offset Butterfly Valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101675568B1 (en) 2016-09-09 2016-11-14 (주)아나이엔지 Device for processing seat surface of triple eccentric butterfly valve
KR20200006236A (en) * 2018-07-10 2020-01-20 주식회사 삼신 Manufacturing Method of Triple Offset Butterfly Valve

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