KR20030015702A - Butterfly valve - Google Patents

Butterfly valve Download PDF

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Publication number
KR20030015702A
KR20030015702A KR1020010049583A KR20010049583A KR20030015702A KR 20030015702 A KR20030015702 A KR 20030015702A KR 1020010049583 A KR1020010049583 A KR 1020010049583A KR 20010049583 A KR20010049583 A KR 20010049583A KR 20030015702 A KR20030015702 A KR 20030015702A
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KR
South Korea
Prior art keywords
valve
pressure
fluid
seat ring
butterfly valve
Prior art date
Application number
KR1020010049583A
Other languages
Korean (ko)
Inventor
이종철
Original Assignee
케이.비.(주)
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Application filed by 케이.비.(주) filed Critical 케이.비.(주)
Priority to KR1020010049583A priority Critical patent/KR20030015702A/en
Publication of KR20030015702A publication Critical patent/KR20030015702A/en

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Classifications

    • 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
    • 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

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

Abstract

PURPOSE: A butterfly valve is provided to prevent the leakage by varying a rubber seat ring through the pressure of fluid. CONSTITUTION: A rubber seat ring(10) comprises a variable wing potion(10c) to be varied through a pressure receiving groove(10b) by receiving the pressure of fluid in a sticking inclined face(10a) to be stuck to a sticking inclined face(54a) of a valve disk(54). The pressure receiving groove is formed in a "V" shape to effectively transfer the pressure of fluid to the variable wing portion. Thereby, the leakage not only from a positive pressure direction of the fluid but also from a reverse pressure direction is prevented.

Description

버터플라이 밸브{Butterfly valve}Butterfly Valve

본 발명은 버터플라이 밸브에 관한 것으로, 특히 관로 상에서 유체의 역압작용시 러버 시트링이 압력 작용을 받아 밸브 디스크에 더욱 밀착됨으로서 역압에 의한 누설을 효과적으로 차단할 수 있도록 하는 버터플라이 밸브에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a butterfly valve, and more particularly, to a butterfly valve which effectively blocks leakage due to back pressure by allowing rubber seating to be pressed against the valve disc due to a pressure action during back pressure of the fluid in the pipeline.

일반적으로 버터플라이 밸브는 유체, 예를 들면 물, 기름 또는 가스 등이 유동되는 관로 상에 설치되어 유체의 유동을 신속히 개방 또는 폐쇄하는데 사용되고 다른 밸브에 비하여 설치 공간을 적게 차지하는 특징을 갖고 있다.In general, a butterfly valve is installed on a pipeline through which a fluid, for example, water, oil, or gas, flows, and is used to quickly open or close the flow of a fluid, and has a feature of using less installation space than other valves.

이러한 버터플라이 밸브는, 관로 상에서 어느 일방으로 유체가 흐를 수 있도록 관통된 유체통로를 갖는 밸브 몸체와, 상기 유체통로를 개방 또는 폐쇄하는 밸브 디스크와, 상기 밸브 몸체를 통해 설치되고 밸브 디스크와 연결되어 밸브 디스크를 유체통로 내에서 회전시키는 밸브축과, 상기 밸브 몸체의 유체통로에 설치되어 밸브 디스크가 유체통로의 폐쇄시 상기 밸브 디스크의 기밀을 유지시키는 러버시트링으로 크게 구성된다.Such a butterfly valve may include a valve body having a fluid passage penetrated therein so as to flow fluid on either side of the pipeline, a valve disc for opening or closing the fluid passage, and installed through and connected to the valve disc. And a valve shaft for rotating the valve disc in the fluid passage, and a rubber seat ring installed in the fluid passage of the valve body to maintain the airtightness of the valve disc when the fluid passage is closed.

도 1은 종래 버터플라이 밸브의 요부 단면도로서, 밸브 몸체(50)에 형성된 유체 통로(52)에 유체를 개방 또는 폐쇄시키는 밸브 디스크(54)가 설치되고, 상기 밸브 디스크(54)는 밸브 몸체(50)에 설치되는 밸브축(56)과 연결되어 회전 가능하게 되며, 상기 유체 통로(52)에는 밸브 디스크(54)와 밀착되어 기밀하는 러버 시트링(58)이 설치된다.1 is a cross-sectional view of a main part of a butterfly valve in which a valve disc 54 for opening or closing a fluid is installed in a fluid passage 52 formed in the valve body 50, and the valve disc 54 is a valve body ( It is connected to the valve shaft 56 is installed on the 50 is rotatable, the rubber passage 52 is provided with a rubber seat ring 58 in close contact with the valve disk 54 and hermetic.

상기와 같이 구성된 종래 버터플라이 밸브는, 도 1과 같이 밸브 디스크(54)가 닫혀 있는 상태에서 정압방향(화살표 참조)에서 유체 압력이 발생될 경우에는 원판형으로 된 밸브 디스크(54)의 전부분이 직접 압력을 받아 밸브 디스크(54)의 밀착경사면(54a)이 이와 대항하는 러버 시트링(58)의 밀착경사면(58a)에 더욱 밀착되어 기밀성이 좋으나, 반대로 도 1과 같이 밸브 디스크(54)가 닫혀 있는 상태에서 역압방향(화살표 참조)에서 유체 압력이 발생될 경우에는 원판형으로 된 밸브 디스크(54)의 전부분이 직접 압력을 받아 밸브 디스크(54)가 가상선과 같이 미세한 후진상태가 발생됨에 따라 밸브 디스크(54)의 밀착경사면(54a)이 이와 대항하는 러버 시트링(58)의 밀착경사면(58a)과 그만큼 밀착력이 떨어져 유체의 역압작용시 누설이 발생되는 문제점을 갖고 있었다.In the conventional butterfly valve configured as described above, when the fluid pressure is generated in the positive pressure direction (see arrow) with the valve disk 54 closed as shown in FIG. The close inclined surface 54a of the valve disk 54 is directly in contact with the close inclined surface 58a of the rubber seat ring 58 against the air pressure, so that the airtightness is good. On the contrary, as shown in FIG. In the closed state, when the fluid pressure is generated in the reverse pressure direction (see arrow), the entire portion of the disk-shaped valve disk 54 is directly pressurized, so that the valve disk 54 has a fine backward state like an imaginary line. The inclined contact surface 54a of the valve disk 54 is in close contact with the inclined contact surface 58a of the rubber seat ring 58, and thus has a problem in that leakage occurs during the back pressure action of the fluid.

따라서 본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위해 창안된 것으로, 밸브 디스크가 닫친 상태에서 정압방향에서의 누설방지는 물론 역압방향에서의 러버 시트링이 유체의 압력에 의해 가변되어 누설을 방지할 수 있는 버터플라이 밸브를 제공하는데 그 목적이 있다.Therefore, the present invention was devised to solve the problems of the prior art as described above. In addition to preventing leakage in the positive pressure direction while the valve disc is closed, the rubber seat ring in the reverse pressure direction is variable by the pressure of the fluid to prevent leakage. The object is to provide a butterfly valve that can be prevented.

상기의 목적을 달성하기 위해 본 발명은,The present invention to achieve the above object,

밸브 몸체에 형성된 유체 통로에 유체를 개방 또는 폐쇄시키는 밸브 디스크가 설치되고, 상기 밸브 디스크는 밸브 몸체에 설치되는 밸브축과 연결되어 회전 가능하게 되며, 상기 유체 통로에는 밸브 디스크와 밀착되어 기밀하는 러버 시트링이 설치된 버터플라이 밸브로서,A valve disc for opening or closing a fluid is installed in a fluid passage formed in the valve body, and the valve disc is rotatably connected to a valve shaft installed in the valve body, and the fluid passage is in close contact with the valve disc for airtight rubber. Butterfly valve with seat ring

상기 러버 시트링은 밸브 디스크와 밀착되는 밀착경사면이 역압방향에서 유체의 압력 영향을 받아 가변될 수 있는 압력받이홈에 의한 가변날개부가 형성된 것을 특징으로 한다.The rubber seat ring is characterized in that the contact surface is in close contact with the valve disk is formed by a variable wing portion by a pressure receiving groove that can be changed under the influence of the pressure of the fluid in the reverse pressure direction.

상기에서 압력받이홈은 유체의 압력이 잘 전달될 수 있도록 "V"형으로 이루어진 것을 특징으로 한다.The pressure receiving groove is characterized in that the "V" type made to be able to transfer the pressure of the fluid well.

도 1은 종래 버터플라이 밸브의 요부 단면도.1 is a cross-sectional view of main parts of a conventional butterfly valve.

도 2는 본 발명의 버터플라이 밸브의 요부 단면도.2 is a sectional view of principal parts of a butterfly valve of the present invention;

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 러버 시트링10a : 밀착경사면10: rubber seat ring 10a: inclined contact surface

10b : 압력받이홈10c : 가변날개부10b: pressure receiving groove 10c: variable wing

50 : 밸브 몸체52 : 유체통로50: valve body 52: fluid passage

54 : 밸브 디스크56 : 밸브축54 valve disc 56 valve shaft

이하에서 본 발명의 바람직한 실시 예를 첨부된 도면에 의거 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 설명에서 종래와 동일 또는 동등한 부분은 동일 부호로 표기하여설명한다.In the description of the present invention, the same or equivalent parts as in the prior art will be described with the same reference numerals.

도 2는 본 발명의 버터플라이 밸브의 요부 단면도를 도시한 것이다.2 is a sectional view showing main parts of a butterfly valve of the present invention.

본 발명의 버터플라이 밸브는, 밸브 몸체(50)에 형성된 유체 통로(52)에 유체를 개방 또는 폐쇄시키는 밸브 디스크(54)가 설치되고, 상기 밸브 디스크(54)는 밸브 몸체(50)에 설치되는 밸브축(56)과 연결되어 회전 가능하게 되며, 상기 유체 통로(52)에는 밸브 디스크(54)와 밀착되어 기밀하는 러버 시트링(10)이 설치된 것으로, 상기 러버 시트링(10)은 밸브 디스크(54)의 밀착경사면(54a)과 밀착되는 밀착경사면(10a)이 역압방향에서 유체의 압력 영향을 받아 가변될 수 있는 압력받이홈(10b)에 의한 가변날개부(10c)가 형성되어 구성된 것이다.In the butterfly valve of the present invention, a valve disc 54 for opening or closing a fluid is installed in the fluid passage 52 formed in the valve body 50, and the valve disc 54 is installed in the valve body 50. It is connected to the valve shaft 56 is rotatable, the fluid passage 52 is provided with a rubber seat ring 10 is in close contact with the valve disk 54 is airtight, the rubber seat ring 10 is a valve The variable inclined portion 10c is formed by the pressure receiving groove 10b in which the close inclined surface 10a in close contact with the close inclined surface 54a of the disk 54 is variable by the influence of the pressure of the fluid in the counter-pressure direction. will be.

상기에서 압력받이홈(10b)은 유체의 압력이 가변날개부(10c)로 잘 전달될 수 있도록 "V"형으로 이루어지는 것이 바람직하다.The pressure receiving groove (10b) in the above is preferably made of "V" type so that the pressure of the fluid can be transferred to the variable wing (10c) well.

상기와 같이 구성된 본 발명에 의하면, 도 2와 같이 밸브 디스크(54)가 닫혀 있는 상태에서 정압방향(화살표 참조)에서 압력이 발생될 경우에는 원판형으로 된 밸브 디스크(54)의 전부분이 직접 압력을 받아 밸브 디스크(54)의 밀착경사면(54a)이 이와 대항하는 러버 시트링(10)의 밀착경사면(10a)에 더욱 밀착되어 기밀성을 갖게 되고, 반대로 도 2와 같이 밸브 디스크(54)가 닫혀 있는 상태에서 역압방향(화살표 참조)에서 압력이 발생될 경우에는 원판형으로 된 밸브 디스크(54)의 전부분이 직접 압력을 받아 밸브 디스크(54)가 가상선과 같이 미세한 후진상태가 발생될 때 러버 시트링(10)의 전 둘레에 걸쳐 형성된 압력받이홈(10b)이 화살표와 같이 유체의 압력을 받게 됨으로서 가변날개부(10c)가 가상선과 같이 가변되어 밀착경사면(10a)이 밸브 디스크(54)의 밀착경사면(54a)과 더욱 확고하게 밀착됨으로서 고압에서의 역압방향 누설을 방지할 수 있게 된다.According to the present invention configured as described above, when pressure is generated in the positive pressure direction (see arrow) in the state in which the valve disk 54 is closed as shown in FIG. When the inclined inclined surface 54a of the valve disk 54 is brought into close contact with the inclined inclined surface 10a of the rubber seat ring 10 opposite thereto, the valve disk 54 is closed as shown in FIG. 2. When the pressure is generated in the reverse pressure direction (see arrow) in the state of being in a state, when the entire portion of the disk-shaped valve disc 54 is directly pressurized, the rubber seat is generated when the valve disc 54 is finely retracted like a virtual line. Since the pressure receiving groove 10b formed over the entire circumference of the ring 10 receives the pressure of the fluid as shown by the arrow, the variable wing 10c is changed like the virtual line so that the close inclined surface 10a of the valve disc 54 is formed. Contact Contact more firmly with the surface (54a) by being it is possible to prevent the back pressure in the direction of the leakage at high pressure.

이상에서 설명한 바와 같이 본 발명은 압력받이홈에 의한 가변날개부를 갖는 러버 시트링을 버터플라이 밸브에 설치함으로서 유체가 역압방향에서 작용할 때 그 유체의 압력에 의해 가변날개부가 압력을 받아 밀착경사면이 밸브 디스크의 밀착경사면에 더욱 밀착되는 효과에 의하여 유체의 정압방향과 함께 역압방향에서의 누설을 방지하는 효과를 갖는다.As described above, the present invention provides the butterfly valve with the rubber seat ring having the variable wing portion by the pressure receiving groove so that the variable wing portion is pressurized by the pressure of the fluid when the fluid acts in the reverse pressure direction, so that the close inclined surface is the valve. The close contact with the inclined contact surface of the disk has the effect of preventing leakage in the reverse pressure direction together with the positive pressure direction of the fluid.

Claims (2)

밸브 몸체에 형성된 유체 통로에 유체를 개방 또는 폐쇄시키는 밸브 디스크가 설치되고, 상기 밸브 디스크는 밸브 몸체에 설치되는 밸브축과 연결되어 회전 가능하게 되며, 상기 유체 통로에는 밸브 디스크와 밀착되어 기밀하는 러버 시트링이 설치된 버터플라이 밸브로서,A valve disc for opening or closing a fluid is installed in a fluid passage formed in the valve body, and the valve disc is rotatably connected to a valve shaft installed in the valve body, and the fluid passage is in close contact with the valve disc for airtight rubber. Butterfly valve with seat ring 상기 러버 시트링은 밸브 디스크와 밀착되는 밀착경사면이 역압방향에서 유체의 압력 영향을 받아 가변될 수 있는 압력받이홈에 의한 가변날개부가 형성된 것을 특징으로 하는 버터플라이 밸브.The rubber seat ring is a butterfly valve, characterized in that the contact surface is in close contact with the valve disk is formed with a variable wing by the pressure receiving groove that can be changed under the influence of the pressure of the fluid in the reverse pressure direction. 제 1항에 있어서, 상기 압력받이홈은 유체의 압력이 가변날개부로 잘 전달될 수 있도록 "V"형으로 이루어진 것을 특징으로 하는 버터플라이 밸브.The butterfly valve according to claim 1, wherein the pressure receiving groove is formed in a "V" shape so that the pressure of the fluid can be well transmitted to the variable wing portion.
KR1020010049583A 2001-08-17 2001-08-17 Butterfly valve KR20030015702A (en)

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KR1020010049583A KR20030015702A (en) 2001-08-17 2001-08-17 Butterfly valve

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KR1020010049583A KR20030015702A (en) 2001-08-17 2001-08-17 Butterfly valve

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634056A (en) * 1992-07-16 1994-02-08 Kubota Corp Seat member installing structure for high temperature butterfly valve
JPH11166638A (en) * 1997-12-05 1999-06-22 Kubota Corp Seat structure of butterfly valve
JP2001355744A (en) * 2000-06-09 2001-12-26 Kubota Corp Metal seat butterfly valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634056A (en) * 1992-07-16 1994-02-08 Kubota Corp Seat member installing structure for high temperature butterfly valve
JPH11166638A (en) * 1997-12-05 1999-06-22 Kubota Corp Seat structure of butterfly valve
JP2001355744A (en) * 2000-06-09 2001-12-26 Kubota Corp Metal seat butterfly valve

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