KR20120132810A - Structure of quadruple eccentricity metal butterfly valve - Google Patents

Structure of quadruple eccentricity metal butterfly valve Download PDF

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Publication number
KR20120132810A
KR20120132810A KR1020110051165A KR20110051165A KR20120132810A KR 20120132810 A KR20120132810 A KR 20120132810A KR 1020110051165 A KR1020110051165 A KR 1020110051165A KR 20110051165 A KR20110051165 A KR 20110051165A KR 20120132810 A KR20120132810 A KR 20120132810A
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South Korea
Prior art keywords
butterfly valve
eccentric structure
center line
quadruple
central line
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KR1020110051165A
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Korean (ko)
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조영득
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주식회사 시퍼스 파이프 라인
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Priority to KR1020110051165A priority Critical patent/KR20120132810A/en
Publication of KR20120132810A publication Critical patent/KR20120132810A/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
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves

Abstract

PURPOSE: A metal sheet type butterfly valve with a quadruple eccentric structure is provided to extend service life with minimized abrasion since backward airtightness is excellent and friction between a disc and a body is minimized. CONSTITUTION: A metal sheet type butterfly valve with a quadruple eccentric structure(1) comprises a body(10), a disc(11), a valve stem(12), and a sheet(13). The butterfly valve is one-sided as much as b from a flow central line B-B' to form a first eccentric structure. The butterfly valve is one-sided as much as a from a body central line A-A' to form a second eccentric structure. The butterfly valve rotates at an arbitrary c angle in an intersection point of the flow central line of the butterfly valve and the central line of the body to form a triple eccentric structure. A disc central line D-D' is rotated at an arbitrary d angle from the body central line B-B' to form a quadruple eccentric structure.

Description

4중 편심구조를 가지는 메탈 시트형 버터플라이 밸브{Structure of quadruple eccentricity metal butterfly valve}Structure of quadruple eccentricity metal butterfly valve

본 발명은 배관과 연결되어 유량을 제어 또는 차단하는 4중 편심구조를 가지는 밸브에 관한 것으로, 보다 상세하게는 양방향 유체 흐름에 있어서 다양한 조건 속에서도 기밀성을 유지할 수 있도록 한 것이다.
The present invention relates to a valve having a quadrilateral eccentric structure connected to a pipe to control or block a flow rate, and more particularly, to maintain airtightness under various conditions in a bidirectional fluid flow.

종래의 버터플라이 밸브는 바디와 디스크를 동심형으로 고정하여 바디나 디스크 중 어느 한 쪽에 고무나 테프론, 또는 합성수지와 같은 연질의 시트를 장착하여 유연성에 의해 기밀을 유지하도록 하였으나 고온, 고압 또는 초저온에서는 소재의 변형이 발생되어 기밀성을 유지하기 어려워 사용에 제한적인 요인이 있었으며, 대한민국 공개실용공보 1998-019294호에 따르면 밸브 몸통 중심선으로부터 일정간격 편심시킨 상태에서 유로 중심선으로부터 일정간격 편심시킨 이차 편심구조를 가지도록 하여 고온, 고압의 조건하에서도 변형을 최소화하여 충분한 기밀성을 유지할 수 있도록 하였으나 밸브 디스크의 구조가 원추형상이 되어 단방향의 유체 흐름 조건에만 기밀성이 보장되어 양방향의 유체 흐름조건에는 부합되지 않아 사용상의 제한이 있었고, 이에 따라 대한민국 공개특허공보 2001-83445호에 따르면 이중편심 구조에서 원추형 밸브디스크의 기준축선에서 임의의 각도만큼 회전하여 삼중 편심구조를 가지도록 하여 디스크를 구성하여 사용해왔으나, 이는 양방향의 유체 흐름의 반복적인 압력을 지속적으로 견디기에는 미약한 단점이 있었다.
In the conventional butterfly valve, the body and the disc are fixed concentrically, and a soft seat such as rubber, teflon, or synthetic resin is attached to either of the body or the disc to maintain airtightness by flexibility, but at high temperature, high pressure, or ultra low temperature Due to the deformation of the material, it was difficult to maintain the airtightness, and there was a limiting factor in the use. According to the Korean Utility Model Publication No. 1998-019294, the secondary eccentric structure, which is eccentrically spaced from the center line of the valve, is spaced from the centerline of the valve body. In order to maintain sufficient airtightness by minimizing deformation under high temperature and high pressure conditions, the valve disc structure is conical to ensure airtightness only in unidirectional fluid flow conditions, so it is not compatible with bidirectional fluid flow conditions. There was a limit According to the Republic of Korea Patent Publication No. 2001-83445 has been used to configure the disk to have a triple eccentric structure by rotating at an angle from the reference axis of the conical valve disk in the double eccentric structure, which is repeated the flow of fluid in both directions There was a weak point to continue to withstand the pressure.

상기와 같은 문제점을 해결하기 위해 본 발명은 상기 삼중 편심 구조를 가진 버터플라이 밸브의 구성에서 디스크를 경사지게 형성하여 정방향이나 역방향의 유체 흐름에 따라 발생되는 압력을 견딜 수 있도록 한 것이다.
In order to solve the above problems, the present invention is to make the disk inclined in the configuration of the butterfly valve having the triple eccentric structure to withstand the pressure generated by the fluid flow in the forward or reverse direction.

상기와 같은 목적을 달성하기 위해 본 발명은 밸브 몸통의 중심선으로부터 "b"만큼 일차 편심을 시킨 상태에서 밸브의 유로(流路)중심선으로부터 "a" 만큼 이차 편심시킨 구조에 밸브의 유로중심선과 몸통중심선의 교점을 기준점으로 하여 원뿔형 밸브디스크의 기준축선을 임의의 각도만큼 회전하여 상기 기준축선을 "c"만큼 축이동시켜 삼차 편심시킨 버터 플라이 밸브에 있어서, 디스크를 "d"만큼 경사지게 형성하여 4중 편심구조를 가지게 하여 고온 및 고압의 조건에서도 양방향 유체의 흐름에 우수한 기밀성을 유지할 수 있도록 한 것이다.
In order to achieve the above object, the present invention provides a flow path center line and a body of the valve in a structure eccentrically "a" from the flow path center line of the valve in a state in which the primary eccentricity is "b" from the center line of the valve body. A butterfly valve in which the reference axis of the conical valve disc is rotated by an arbitrary angle with the reference point of the center line as the reference point, and the reference axis is eccentrically shifted by "c", wherein the disc is inclined by "d". It has a central eccentric structure to maintain excellent airtightness in the flow of bidirectional fluid even under high temperature and high pressure conditions.

이와 같이 된 본 발명은 삼차 편심구조에서 디스크를 경사지게 형성하여 사중 편심구조를 갖도록 함으로써 밸브 디스크의 유동성과 기밀성을 확보하여 양방향 유체 흐름에 대한 차단기능을 극대화할 수 있으며, 특히 역방향 기밀성이 뛰어나고 디스크와 바디의 마찰을 최소화하여 마모를 최소화하여 사용기간을 늘릴 수 있어 경제적인 장점이 있는 것이다.
In the present invention as described above, the disk is formed obliquely in the tertiary eccentric structure to have a quadruple eccentric structure to secure the fluidity and airtightness of the valve disc, thereby maximizing the blocking function for the two-way fluid flow, in particular, excellent reverse airtightness and By minimizing the friction of the body to minimize wear can increase the service life is an economic advantage.

도 1 은 본 발명에 따른 4중 편심구조를 가지는 메탈 시트형 버터플라이 밸브의 단면도
도 2 는 본 발명에 따른 4중 편심구조를 가지는 메탈 시트형 버터플라이 밸브의 압력을 받는 상태의 압력과 힘, 면적과 모멘트를 나타내는 단면도1 is a cross-sectional view of a metal seated butterfly valve having a quadruple eccentric structure according to the present invention.
Figure 2 is a cross-sectional view showing the pressure and force, the area and the moment under the pressure of the metal seat-type butterfly valve having a four-eccentric structure according to the present invention

버터플라이 밸브(1)의 유로 중심선 B-B'선으로부터 "b"만큼 편심시켜 1차 편심구조를 가지도록 하고, 바디(10)의 중심선 A-A'선으로부터 "a"만큼 편심시켜 2차 편심구조를 이루고, 버터플라이 밸브(1)의 유로 중심선과 바디(10)의 중심선의 교점에서 "c"만큼 임의의 각도를 회전하여 3중 편심구조를 가지는 버터플라이 밸브(1)에 있어서, Eccentricity "b" from the flow path center line B-B 'line of the butterfly valve 1 so that it may have a primary eccentric structure, and eccentricity "a" from the center line A-A' line of the body 10, secondary In the butterfly valve 1 which has an eccentric structure and has a triple eccentric structure by rotating an arbitrary angle by "c" at the intersection of the flow path center line of the butterfly valve 1 and the center line of the body 10,

바디(10)의 중심선 B-B'선으로부터 디스크(11)의 중심선 D-D'선을 임의의 각도 "d"만큼 회전하여 4중편심 구조를 가지게 되는 것이다.
The center line D-D 'of the disk 11 is rotated by an arbitrary angle "d" from the center line B-B' of the body 10 to have a quadrilateral structure.

이와같이 된 본 발명을 첨부된 도면에 의해 상세히 설명하면 다음과 같다.
The present invention as described above will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 4중 편심구조를 가지는 메탈 시트형 버터플라이 밸브의 단면도이다.
1 is a cross-sectional view of a metal seated butterfly valve having a quadruple eccentric structure according to the present invention.

도시된 바에 따르면 디스크(11)의 회전축인 밸브대(12)를 기밀부인 시트(13)가 개재되는 바디(10)의 중심선인 B-B'선으로부터 "b"만큼 편심시켜 일차 편심구조를 가지게 하고, 유로 중심선인 A-A'선으로부터 "a"만큼 편심시켜 이차 편심구조를 이루고, 버터플라이 밸브(1)의 유로 중심선인 A-A'선과 바디(10)의 중심선인 B-B'선의 교점으로 부터 원추형 디스크(11)의 기준 축선인 C-C'선을 임의의 각도 "c"만큼 회전하여 3중 편심을 가지게 한 후 디스크(11)의 중심선 D-D'선을 "d"만큼 회전하여 4중 편심구조를 이루도록 한다.
As shown in the figure, the valve stem 12, which is the rotating shaft of the disk 11, is eccentrically "b" from the line B-B ', which is the centerline of the body 10, through which the seat 13, which is hermetically sealed, has a primary eccentric structure. A second eccentric structure is formed by eccentrically "a" from the A-A 'line, which is the flow path center line, and the A-A' line which is the flow center line of the butterfly valve 1 and the B-B 'line which is the center line of the body 10. Rotate the C-C 'line, which is the reference axis of the conical disk 11 from the intersection, by a certain angle "c" to have a triple eccentricity, and then move the centerline D-D' line of the disk 11 by "d". Rotate to form a four eccentric structure.

여기에서 편심량 a,b,c,d는 밸브의 구경에 의해 그 거리나 각도에 따른 비율이 다르게 적용되는 것이기 때문에 특정하는 것은 큰 의미가 없으며, 압력등급과 사이즈에 따라 적용규격이 API609, ASME B16,10 등과 같이 국제적으로 정해져 있기 때문에 당업계에 종사하는 통상의 지식을 가진 자라면 그 편심량을 특정하지 않더라도 그 범위를 충분히 알 수 있는 것이다.
In this case, the eccentricity a, b, c, and d are different from each other according to the distance or angle depending on the size of the valve. Therefore, it is not important to specify the eccentricity. Since it is set internationally, such as 10, those of ordinary skill in the art can fully know the scope even if the eccentricity is not specified.

도 2에 따르면 버터블라이 밸브(1)를 사용하여 유체의 압력이 작용할 때 정방향과 역방향의 경우 각각 받는 압력의 크기가 달라지는 것을 알 수 있다.
According to Figure 2 it can be seen that when the pressure of the fluid using the butterfly valve (1) the magnitude of the pressure received in the forward and reverse direction respectively.

P = F / A (압력 = 힘 / 면적)P = F / A (pressure = force / area)

F = P * A (힘 = 압력 * 면적)F = P * A (force = pressure * area)

M = F * r = P * A * r (모멘트 = 힘 * 반지름 = 압력 * 면적 * 반지름)
M = F * r = P * A * r (moment = force * radius = pressure * area * radius)

상기의 공식에 따라서 버터플라이 밸브(1)에 유체가 정방향 또는 역방향으로 흐름에 따라 발생하는 압력을 P라고 하고 정방향에 의해 M1이 닫히고 M2가 열려있을 경우 4중 편심 구조에 의해 A1의 면적이 A2의 면적보다 넓고 r1이 r2보다 넓어 회전반경도 커지게 되어 M1의 값도 높게 나와 M1 > M2 의 결과가 나오며, 역방향의 경우에도 M3와 M4를 놓고 볼 때 A4의 면적이 A3의 면적보다 넓고 r4의 반지름이 r3의 반지름보다 넓어 회전반경이 커지므로 M3 < M4의 결과가 나오게 되는 것이다.
According to the above formula, the pressure generated as the fluid flows in the forward or reverse direction to the butterfly valve 1 is P, and when M1 is closed and M2 is open in the forward direction, the area of A1 is A2 due to the four eccentric structure. It is wider than the area of r1 and r1 is wider than r2, so the radius of rotation becomes larger, resulting in a higher value of M1, resulting in M1> M2.In the reverse direction, the area of A4 is larger than the area of A3 and r4 when M3 and M4 are placed. Since the radius of is wider than the radius of r3, the radius of rotation becomes larger, resulting in M3 <M4.

이에 따라 정방향과 역방향의 유체의 흐름에 따라 버터플라이 밸브(1)가 압력을 분산하여 받을 수 있게 되어 내구성을 높여 장기간 사용할 수 있도록 한 것이다.
Accordingly, according to the flow of the fluid in the forward and reverse direction, the butterfly valve (1) is able to receive the pressure by increasing the durability to be used for a long time.

1; 버터플라이 밸브
10; 바디
11; 디스크
12; 밸브대
13; 시트One; Butterfly valve
10; body
11; disk
12; Valve seat
13; Sheet

Claims (1)

버터플라이 밸브(1)의 유로 중심선 B-B'선으로부터 "b"만큼 편심시켜 1차 편심구조를 가지도록 하고, 바디(10)의 중심선 A-A'선으로부터 "a"만큼 편심시켜 2차 편심구조를 이루고, 버터플라이 밸브(1)의 유로 중심선과 바디(10)의 중심선의 교점에서 "c"만큼 임의의 각도를 회전하여 3중 편심구조를 가지는 버터플라이 밸브(1)에 있어서,
바디(10)의 중심선 B-B'선으로부터 디스크(11)의 중심선 D-D'선을 임의의 각도 "d"만큼 회전하여 4중편심 구조를 가지게 되는 것을 특징으로 하는 4중 편심구조를 가지는 메탈 시트형 버터플라이 밸브.
Eccentricity "b" from the flow path center line B-B 'line of the butterfly valve 1 so that it may have a primary eccentric structure, and eccentricity "a" from the center line A-A' line of the body 10, secondary In the butterfly valve 1 which has an eccentric structure and has a triple eccentric structure by rotating an arbitrary angle by "c" at the intersection of the flow path center line of the butterfly valve 1 and the center line of the body 10,
The center line B-B 'of the body 10 is rotated by a predetermined angle "d" from the center line D-D' of the disk 11 to have a quadrilateral structure, characterized in that it has a four eccentric structure. Metal seated butterfly valve.
KR1020110051165A 2011-05-30 2011-05-30 Structure of quadruple eccentricity metal butterfly valve KR20120132810A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103104710A (en) * 2013-02-20 2013-05-15 铁岭大沃阀门（集团）有限公司 Crankshaft butterfly valve
KR20150117181A (en) * 2014-04-09 2015-10-19 주식회사 시퍼스 파이프 라인 Butterfly valve having quadruple eccentric structure
JP2016186331A (en) * 2015-03-27 2016-10-27 株式会社栗本鐵工所 Butterfly valve
JP2016186336A (en) * 2015-03-27 2016-10-27 株式会社栗本鐵工所 Butterfly valve
KR102067132B1 (en) * 2018-08-28 2020-01-15 주식회사 코에그 Butterfly valve having quadruple eccentric structure
KR102268251B1 (en) * 2020-12-10 2021-06-23 한국유니콤밸브주식회사 Butterfly valve with quintuple offset structure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103104710A (en) * 2013-02-20 2013-05-15 铁岭大沃阀门（集团）有限公司 Crankshaft butterfly valve
KR20150117181A (en) * 2014-04-09 2015-10-19 주식회사 시퍼스 파이프 라인 Butterfly valve having quadruple eccentric structure
JP2016186331A (en) * 2015-03-27 2016-10-27 株式会社栗本鐵工所 Butterfly valve
JP2016186336A (en) * 2015-03-27 2016-10-27 株式会社栗本鐵工所 Butterfly valve
KR102067132B1 (en) * 2018-08-28 2020-01-15 주식회사 코에그 Butterfly valve having quadruple eccentric structure
KR102268251B1 (en) * 2020-12-10 2021-06-23 한국유니콤밸브주식회사 Butterfly valve with quintuple offset structure
WO2022124527A1 (en) * 2020-12-10 2022-06-16 한국유니콤밸브주식회사 Butterfly valve with quintuple offset structure

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