KR100947423B1 - Butterfly Valve - Google Patents

Butterfly Valve Download PDF

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Publication number
KR100947423B1
KR100947423B1 KR1020070099091A KR20070099091A KR100947423B1 KR 100947423 B1 KR100947423 B1 KR 100947423B1 KR 1020070099091 A KR1020070099091 A KR 1020070099091A KR 20070099091 A KR20070099091 A KR 20070099091A KR 100947423 B1 KR100947423 B1 KR 100947423B1
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South Korea
Prior art keywords
valve
seat
contact surface
body seat
contact
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KR1020070099091A
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Korean (ko)
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KR20090033987A (en
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신상열
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신상열
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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
    • F16K1/226—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
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/228—Movable sealing bodies
    • 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • F16K1/465—Attachment of sealing rings to the valve seats
    • 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

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

Abstract

본 발명은 버터플라이 밸브에 관한 것으로, 더욱 구체적으로는 고온 고압의 액체나 기체 및 중저압수증기를 공압식으로 자동 개폐시키는 밸브시트와 바디시트의 기밀성을 연장시키며 밸브원판의 회전제어가 용이한 버터플라이 밸브에 관한 것이다.The present invention relates to a butterfly valve, and more particularly to a butterfly valve which extends airtightness of a valve seat and a body seat which automatically open and close high temperature, high pressure liquid, gas, and medium and low pressure steam by pneumatic type, and facilitates rotation control of the valve disc. It is about a valve.

즉, 본 발명의 버터플라이 밸브는, 밸브본체의 관로를 밸브원판으로 개폐시키되 밸브본체에 환형으로 구비된 바디시트와 밸브원판의 외주면에 구비된 밸브시트가 밀착되게 설치되고 상기 밸브시트는 백업링이 구비되어 관로의 유체압력에 의해 밸브시트의 접촉면을 밀착시킬 수 있도록 한 것에 있어서, 상기 바디시트는 미세간격으로 좌우로 이동될 수 있게 형성된 공간부에 설치되어 바디시트의 우측면은 관로의 유체압력에 의해 가압이동되어 바디시트 접촉면의 밀착작용이 이루어지고 바디시트의 좌측면은 공기공급부로 부터 유입되는 공기압력에 의해 가압이동되어 바디시트의 접촉면이 밸브시트의 접촉면과 분리되게 하여 회전에 따른 마찰과 급작스런 유로개방을 예방하는 버터플라이 밸브를 특징으로 한다.That is, in the butterfly valve of the present invention, the valve body is provided in close contact with the valve seat provided on the outer circumferential surface of the valve body and the body seat provided in an annular shape to the valve body to open and close the pipeline of the valve body with the valve disc. Is provided so that the contact surface of the valve seat can be in close contact by the fluid pressure of the pipe line, the body seat is installed in the space formed to be moved to the left and right at a fine interval, the right side of the body seat is the fluid pressure of the pipeline The pressure is moved by the body seat contact surface is in close contact with the left side of the body seat is pressed by the air pressure flowing from the air supply to the body seat contact surface is separated from the contact surface of the valve seat friction due to rotation It features a butterfly valve that prevents sudden opening of the flow path.

밸브본체, 관로, 바디시트, 밸브시트, 밸브원판, 가압이동 Valve body, pipeline, body seat, valve seat, valve disc, pressure movement

Description

버터플라이 밸브 {Butterfly Valve}Butterfly Valve {Butterfly Valve}

본 발명은 버터플라이 밸브에 관한 것으로, 더욱 구체적으로는 고온 고압의 액체나 기체 및 중저압수증기를 공압식으로 자동 개폐시키는 밸브시트 및 바디시트의 기밀성이 우수하고 밸브원판은 마찰없이 개폐가 용이한 버터플라이 밸브에 관한 것이다.The present invention relates to a butterfly valve, and more particularly, the airtightness of the valve seat and body seat for automatically opening and closing the liquid or gas and the medium and low pressure steam of high temperature and high pressure, and the valve disc is butter easy to open and close without friction Relates to a fly valve.

일반적으로 버터플라이 밸브의 시트가 밸브본체에 고정된 상태이기 때문에 고온의 유체압력을 차단하게 되면 시트 및 밸브원판이 고온의 열팽창에 의해서 변형될 때 이를 자체적으로 흡수하지 못하고 변형된 상태를 지속적으로 유지시켜 수축시에는 원상이 제대로 되지않아서 밀폐기능이 떨어지게 되고, 초기열림이 밸브의 언씨팅 토크(unseating torque) 때문에 열린 급작스럽고 마찰에 의한 수명저하가 있다.Generally, since the seat of the butterfly valve is fixed to the valve body, when the high temperature fluid pressure is blocked, the seat and valve disc do not absorb themselves when deformed by high temperature thermal expansion and maintain the deformed state continuously. In case of contraction, the original function is not properly restored and the sealing function is lowered, and the initial opening is suddenly opened due to the unseating torque of the valve, and there is a decrease in life due to friction.

이를 감안하여 버터플라이밸브의 시트구조(실용신안공보 공고번호 95-9537)가 고안되어 밸브시트가 밸브본체의 지지환턱 내의 공간부에서 좌우이동하면서 밸 브원판을 긴밀하게 밀폐시킬수 있도록 하였으나 대용량의 밸브에서는 밸브본체에 결합된 밸브시트는 내향팽창이 되고 이와 맞닿는 밸브원판은 반대로 외향 팽창되면서 밸브시트의 팽창면에 의해 밸브원판의 시팅작용을 간섭하여 밸브의 개폐상태가 불량해지는 단점이 있다.In view of this, the butterfly valve seat structure (Utility Model Publication No. 95-9537) has been devised to allow the valve seat to close the valve disc tightly while moving left and right in the space within the support ring of the valve body. In the valve seat coupled to the valve body is inwardly inflated and the valve disc that is in contact with it is inversely inflated outwards interfere with the seating action of the valve disc by the expansion surface of the valve seat has a disadvantage in that the opening and closing state of the valve is poor.

또한, 실용신안등록 제20-247096호에서는 밸브원판의 외주면에 밸브시트를 결착판으로 고정하고 밸브본체의 밀착단부에 밀폐되게한 구성으로 밸브원판과 밸브시트의 온도팽창 분산효과를 가진 밸브원판의 시팅작용이 이루어지도록한 구성으로 밸브시트는 밸브원판과 밸브시트의 온도팽창시에도 밸브원판이 밸브시트에 의한 시팅간섭을 받지않고 온도팽창과 관계없이 밸브원판의 시팅작용이 용이하게 이루어지도록 하고 있다.In addition, Utility Model Registration No. 20-247096 has a configuration in which the valve seat is fixed to the outer peripheral surface of the valve disc with a binding plate and sealed to the close end of the valve body. The valve seat is designed to achieve the seating action, so that the valve disc does not receive seating interference by the valve seat even when the valve disc and the valve seat are inflated. .

그러나 상기와 같은 버터플라이 밸브에서는 관로를 개방하기 위해 밸브원판(DISC )의 밸브시트(DISC SEAT)를 밸브본체(BODY)의 바디시트(BODY SEAT)에 밀착된 상태에서 분리하는 경우에 바디시트에서 분리시점의 밸브시트는 관로에 가해지는 유체압력에 의해 순간적으로 급격하게 과도한 개방(일명 팝핑현상이 발생)이 되는 등 밸브의 제어조절에 어려움이 있고 바디시트와 밸브시트의 접촉면이 쉽게 마모되어 수명이 단축되고 밸브시트만이 관로의 유체압력에 의해 바디시트에 밀착되는 구성이므로 밀착력도 떨어지는 단점이 있었다.However, in the butterfly valve as described above, the valve seat (DISC SEAT) of the valve disc (DISC) is removed from the body seat in close contact with the body seat of the valve body (BODY) to open the pipeline. The valve seat at the time of separation has difficulty in controlling the valve such as suddenly excessive opening (aka popping phenomenon) due to the fluid pressure applied to the pipeline, and the contact surface between the body seat and the valve seat is easily worn out This shortened and only the valve seat is in close contact with the body seat by the fluid pressure of the pipe, there was a disadvantage that the adhesion is also lowered.

특히, 종래에는 밸브원판으로 관로를 10%정도 개방하였을 때 유체압력에 의해 순간적으로 30~40%까지 개방이 되어 밸브원판의 회전제어가 용이하지 않고, 급격한 개방과정에서 밀착접촉면이 부딪혀서 마모 또는 변형이 되었다.Particularly, in the conventional case, when the pipeline is opened by about 10% of the valve disc, the valve is opened up to 30-40% instantaneously by the fluid pressure, so that the rotation control of the valve disc is not easy. It became.

본 발명은 이러한 문제점을 해결하기 위하여 밸브본체에 설치되는 바디시트를 미세간격으로 좌우로 이동되게 설치하여 관로차단시에는 밸브본체의 바디시트가 관로의 유체압력에 의해 밸브원판에 설치된 밸브시트에 밀착되는 방향으로 이동되어 밀착력을 높여주고, The present invention is installed so that the body seat is installed in the valve body to be moved to the left and right at a fine interval in order to solve this problem, the body seat of the valve body is in close contact with the valve seat installed on the valve disc by the fluid pressure of the pipe when the pipeline is blocked. Is moved in the direction to increase the adhesion

관로를 개방하게 될 때에는 밸브원판을 회전시키기 전에 먼저 바디시트를 외부의 공기압에 의해 관로의 유체압력이 가해지는 방향의 반대로 이동되게 하여 바디시트가 밸브시트와 미세간극으로 분리되어 그 미세간극으로 유체가 통과되게 한 수단으로 밸브원판에 가해지는 관로의 유체압력을 분산시킨 다음 밸브원판을 회전하여 개방함으로서 밸브원판이 유체압력에 의해 급격하게 개방되는 것을 방지할 수 있도록 한 버터플라이 밸브를 제공함에 있다.When opening the pipeline, before rotating the valve disc, the body seat is first moved in the opposite direction of the direction in which the fluid pressure of the pipe is applied by the external air pressure, so that the body seat is separated into the valve seat and the micro gap, and the fluid is separated into the micro gap. The present invention provides a butterfly valve which prevents the valve disc from suddenly being opened by the fluid pressure by dispersing the fluid pressure of the pipe applied to the valve disc by means of passing the valve disc, and then rotating and opening the valve disc. .

본 발명의 버터플라이 밸브는, 밸브본체의 관로를 밸브원판으로 개폐시키되 밸브본체에 환형으로 구비된 바디시트와 밸브원판의 외주면에 구비된 밸브시트가 밀착되게 설치되고 상기 밸브시트는 백업링이 구비되어 관로의 유체압력에 의해 밸브시트의 접촉면을 밀착시킬 수 있도록 한 것에 있어서, 상기 바디시트는 미세간격으로 좌우로 이동될 수 있게 형성된 공간부에 설치되고 밸브본체 일측은 공기공급부와 연결된 공기유입통로가 형성된 구성으로, 관로의 유체압력이 바디시트의 우측 면을 가압하여 바디시트의 접촉면을 밀착시킬 수 있게 하고, 공기공급부의 공기압력에 의해 바디시트의 좌측면을 가압하여 바디시트의 접촉면이 밸브시트의 접촉면과 분리되게 하여서 된 버터블라이 밸브를 특징으로 한다.Butterfly valve of the present invention, the valve body of the valve body is opened and closed by the valve disc to the valve seat is provided in close contact with the valve seat provided on the outer peripheral surface of the valve seat and the valve seat is provided with a backup ring In order to be in close contact with the contact surface of the valve seat by the fluid pressure of the pipe, the body seat is installed in the space formed to be moved to the left and right at fine intervals, one side of the valve body is an air inlet passage connected to the air supply In this configuration, the fluid pressure in the pipeline presses the right side of the body seat to closely contact the contact surface of the body seat, and the contact surface of the body seat is pressurized by pressing the left side of the body seat by the air pressure of the air supply unit. And a butterfly valve adapted to be separated from the contact surface of the seat.

본 발명의 버터플라이 밸브는, Butterfly valve of the present invention,

관로의 차단시에는, 밸브원판의 밸브시트와 밸브본체의 바디시트에 관로의 유체압력이 각각 가해져서 양측 접촉면이 서로 밀착되게 하는 상호작용으로 누설되지 않고 효과적인 차단을 할 수 있게 되고,When the pipeline is blocked, the fluid pressure of the pipeline is applied to the valve seat of the valve disc and the body seat of the valve body so that both sides of the contact surface are in close contact with each other, thereby preventing leakage and effectively blocking.

관로의 개방시에는, 관로의 유체압력을 분산시킨 상태에서 밸브원판을 회전하여 관로를 개방하게 되므로 밸브원판으로 관로를 차단된 상태에서도 밸브원판이 유체압력에 의해 순간적으로 급격하게 개방되지 않고 보다 완만하게 개방할 수 있게 되므로 밸브원판의 회전시에 마찰이 없고 제어조절이 용이하다.When the pipeline is opened, the valve disk is opened by rotating the valve disk in a state where the fluid pressure of the pipeline is dispersed, so that the valve disk is not suddenly opened by the fluid pressure momentarily, even when the pipeline is blocked by the valve disk. It can be opened so that there is no friction during the rotation of the valve disc and it is easy to control and control.

또한, 밸브시트의 접촉면과 바디시트의 접촉면이 먼저 분리된 다음 밸브원판이 회전하여 개방이 이루어지므로 상기 밀착접촉면이 변형 또는 마모율을 감소시켜 내구성을 높일 수 있는 효과가 있다.In addition, since the contact surface of the valve seat and the contact surface of the body seat are first separated and then the valve disc is rotated to open, the close contact surface has an effect of increasing durability by reducing deformation or wear rate.

이하 본 발명의 바람직한 구성 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. 그리고 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구 성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. And in describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

본 발명의 버터플라이 밸브는, 밸브본체(10)의 유체가 통과하는 관로(12)에 밸브원판(30)이 설치되어 회전축(32)을 축으로 회전하는 밸브원판(30)으로 개폐가 이루어지되 상기 밸브본체(10)에 환형으로 구비된 바디시트(14)가 설치되고 밸브원판(30)의 외주면에는 밸브시트(34)가 설치되며 상기 바디시트(14)와 밸브시트(34)에 각각 형성된 테이퍼진 접촉면(14a)(34a)에 상호 밀착이 되고 상기 밸브시트(34)단면 중간부의 유체압력이 가해지는 위치에 백업링(36)이 구비되어 유체유입구멍(38)을 통해 관로(12)의 유체압력이 백업링(36)에 전달되어 가압되게 한 구성에 의해 밸브시트(34)의 접촉면(34a)이 바디시트(14)의 접촉면(14a)에 긴밀히 밀착되도록 되어 있다. In the butterfly valve of the present invention, the valve disc 30 is installed in the conduit 12 through which the fluid of the valve body 10 passes, and the valve valve 30 is opened and closed by the valve disc 30 which rotates the axis of rotation 32. The body seat 14 provided in an annular shape in the valve body 10 is installed, the valve seat 34 is installed on the outer circumferential surface of the valve disc 30 is formed on the body seat 14 and the valve seat 34, respectively The backing ring 36 is provided at a position where the tapered contact surfaces 14a and 34a are brought into close contact with each other and the fluid pressure of the intermediate portion of the valve seat 34 is applied to the tapered contact surfaces 14a and 34a. The contact surface 34a of the valve seat 34 is brought into close contact with the contact surface 14a of the body seat 14 by the configuration in which the fluid pressure of the fluid is transmitted to the backup ring 36 and pressed.

상기 바디시트(14)는 미세간격으로 좌우로 이동될 수 있게 형성된 공간부(18)에 설치되되 바디시트(14)의 우측면(141)에 관로(12)의 유체압력이 전달되어 바디시트(14)를 좌측으로 가압이동되게 하는 유체압력전달수단으로 바디시트(14)에 구비된 접촉면(14a)이 밸브시트(34)의 접촉면(34a)에 밀착되게 한 구성과, The body sheet 14 is installed in the space 18 formed to be moved to the left and right at a fine interval, but the fluid pressure of the conduit 12 is transferred to the right side 141 of the body sheet 14, the body sheet 14 ) The contact surface (14a) provided on the body seat 14 is in close contact with the contact surface (34a) of the valve seat 34 as a fluid pressure transfer means for the pressure movement to the left,

바디시트(14)의 좌측면(142)에 공기공급부(26)로 부터 유입되는 공기압력이 전달되어 바디시트(14)를 우측으로 가압이동되게 하는 공기압력전달수단으로 바디시트(14)의 접촉면(14a)이 밸브시트(34)의 접촉면(34a)과 분리되게 한 구성으로 되어 있다.The air pressure flowing from the air supply unit 26 to the left side 142 of the body sheet 14 is transferred to the contact surface of the body sheet 14 as an air pressure transmission means to pressurize the body sheet 14 to the right The structure 14a is separated from the contact surface 34a of the valve seat 34.

상기 유체압력전달수단은, 상기 바디시트(14)의 우측상단부와 우측중간단부에는 바디시트(14)의 우측면(141)에 위치한 공간부(18)내에 유체가 유입되지 않도록 밀착패킹(15)(15')이 각각 끼워진 구성으로 바디시트(14)의 공간부(18)하부에 위치한 우측면(141)에 관로(12)의 유체압력이 가해질 수 있게 하여 바디시트(14)의 접촉면(14a)이 밸브시트(34)의 접촉면(34a)에 밀착되도록 한다.The fluid pressure transfer means is a close packing (15) to the right upper end and the right middle end of the body sheet 14 so that no fluid flows into the space 18 located on the right side 141 of the body seat 14 ( 15 ') is fitted into each other so that the fluid pressure of the conduit 12 can be applied to the right side 141 located under the space 18 of the body seat 14 so that the contact surface 14a of the body seat 14 It is in close contact with the contact surface 34a of the valve seat 34.

상기 공기압력전달수단은, 상기 공기공급부(26)는 밸브본체(10)의 일측에 형성된 공기유입통로(24)와 연결되고 공기유입통로(24)의 선단은 바디시트(14)의 좌측면(142)에 접하는 위치에 형성되어 공기압력이 가해질 수 있게 하되 상기 바디시트(14)가 좌측으로 가압이동하는 유체압력전달시에는 바디시트(14)의 좌측면(142)에 위치하는 공간부(18)에 있는 공기압력이 배기되는 역할을 수행 한다.The air pressure transmission means, the air supply unit 26 is connected to the air inlet passage 24 formed on one side of the valve body 10 and the front end of the air inlet passage 24 is the left side of the body seat 14 ( 142 is formed in a position in contact with the air pressure can be applied to the space portion 18 is located on the left side 142 of the body seat 14 when the fluid pressure transfer to the body sheet 14 to pressurize to the left Air pressure in) is exhausted.

또, 상기 바디시트(14)의 좌측상단부와 좌측하단부에 위치한 밸브본체(10)에 밀착패킹(11)(11')을 끼우되 바디시트(14)의 접촉면(14a)좌측으로 연장단부(16)가 형성되고 그 연장단부(16)의 상면에 하부 밀착패킹(11')이 밀착되게 한 구성으로 공기유입통로(24)의 공기압력이 공간부(18)에만 유입되도록 한다.In addition, the close packing (11, 11 ') is inserted into the valve body (10) located in the upper left and lower left end of the body seat 14, the extended end 16 to the left of the contact surface (14a) of the body seat (14) Is formed and the lower tight packing 11 'is in close contact with the upper surface of the extended end 16 so that the air pressure of the air inflow passage 24 flows into the space 18 only.

상기 공간부(18)는 바디시트(14)가 좌우로 이동될 수 있는 공간을 이루도록 하고 상기 공간부(18)우측과 접하는 부분에 결착판(22)으로 지지된 지지대(20)를 설치하되 상기 지지대(20)의 하단과 바디시트(14)의 우측면(141)하단이 동일한 수평선상으로 놓여지게 한 구성으로 바디시트(14)의 우측면(141)에 관로(12)의 유체압력이 간접적으로 가해질 수 있게 하여 바디시트(14)의 좌측면(142)을 공기압력으로 가압하여 우측으로 이동시키게 될 때 관로(12)의 유체압력의 영향을 줄여서 용이하게 우측이동이 될 수 있게 한다.The space portion 18 forms a space in which the body sheet 14 can be moved left and right, and installs the support 20 supported by the binding plate 22 at a portion in contact with the right side of the space portion 18. The fluid pressure of the conduit 12 is indirectly applied to the right side 141 of the body sheet 14 in such a manner that the lower end of the support 20 and the bottom side of the right side 141 of the body sheet 14 are placed on the same horizontal line. When the left side 142 of the body seat 14 is pressurized by the air pressure to move to the right to reduce the influence of the fluid pressure of the conduit 12 to be easily moved to the right.

상기에서 바디시트(14)가 복귀(도면에서의 좌측이동)시에는 압축공기의 유입속도(S1)보다 배출속도(S2)가 느리게 작동되도록 압축공기를 조절하여 밸브원판(30)이 닫힘각도에 도달한 후에 복귀되도록 함으로서 접촉마찰이 발생하지 않도록 함이 바람직하다. In the above, when the body seat 14 returns (moves to the left in the drawing), the valve disc 30 is closed by adjusting the compressed air so that the discharge speed S2 is operated slower than the inlet speed S1 of the compressed air. It is desirable to ensure that contact friction does not occur by returning after reaching.

도면중 미설명부호 39는 밸브시트 고정부재이다.Reference numeral 39 in the drawings is a valve seat fixing member.

이와 같이 본 발명에 따른 버터플라이 밸브는, 밸브원판(30)을 회전시켜 밸브본체(10)의 관로(12)를 개폐시키게 되는 것으로 밸브원판(30)이 회전축(32)을 축으로 회전하여 첨부도면에서와 같이 우측방향에서 좌측으로 흐르는 유체의 흐름을 차단하거나 개방을 하게 된다.As described above, the butterfly valve according to the present invention is to open and close the conduit 12 of the valve body 10 by rotating the valve disc 30 so that the valve disc 30 is rotated about the axis of rotation 32. As shown in the figure, the flow of the fluid flowing from the right to the left is blocked or opened.

이때, 본 발명에서는 관로(12)가 차단된 상태에서는 밸브원판(30)의 밸브시 트(34)단면 중간부에 구비된 백업링(36)에 관로(12)의 유체압력이 전달되는 가압작용에 의해 밸브시트(34)의 접촉면(34a)이 바디시트(14)의 접촉면(14a)에 밀착이 이루어도록 함과 동시에 밸브본체(10)에 구비된 바디시트(14)의 우측면(141)이 유체압력으로 가압되어 바디시트(14)의 접촉면(14a)이 밸브시트(34)의 접촉면(34a)에 밀착력을 더하여 관로(12)를 긴밀하게 차단하게 된다.At this time, in the present invention, in the state in which the conduit 12 is blocked, a pressurizing action in which the fluid pressure of the conduit 12 is transmitted to the backup ring 36 provided in the middle portion of the end surface of the valve seat 34 of the valve disc 30. The contact surface 34a of the valve seat 34 is brought into close contact with the contact surface 14a of the body seat 14, and at the same time, the right side 141 of the body seat 14 provided in the valve body 10 is provided. Pressurized by the fluid pressure, the contact surface 14a of the body seat 14 adds an adhesive force to the contact surface 34a of the valve seat 34 to close the conduit 12 closely.

즉, 관로(12)의 차단시에는 밸브본체(10)의 바디시트(14)와 밸브원판(30)의 밸브시트(34)에 관로(12)의 유체압력이 각각 가해져서 접촉면(14a)(34a)이 서로 밀착되게 하는 상호 가압작용으로 밸브가 누설되지 않고 긴밀한 차단상태를 유지하게 된다.That is, at the time of shutoff of the conduit 12, the fluid pressure of the conduit 12 is applied to the body seat 14 of the valve body 10 and the valve seat 34 of the valve disc 30 so that the contact surface 14a ( The mutual pressurizing action of 34a) is in close contact with each other, so that the valve does not leak and maintain a close shut-off state.

그리고, 관로(12)를 개방하게 될 때에는, 밸브원판(30)을 회전시키기 전에 먼저 공기공급부(26)에서 공기유입통로(24)를 통해 공기압력을 유입시켜 공기유입통로(24)선단과 접하는 바디시트(14)의 좌측면(142)을 가압하게 되면 관로(12)의 유체압력 진행방향과 반대되는 우측방향의 공간부(18)로 바디시트(14)가 가압이동되면서 바디시트(14)의 접촉면(14a)이 밸브시트(34)의 접촉면(34a)과 분리되어 그 사이에 미세간극이 형성되고 그 미세간극으로 유체가 고르게 통과하게 되므로 관로(12)를 차단하고 있는 상태의 밸브원판(30)에 가해지는 유체압력은 분산이 된다.And, when opening the conduit 12, the first air inlet flows through the air inlet passage 24 in the air supply unit 26 before rotating the valve disc 30 to contact the air inlet passage 24 end When the left side 142 of the body sheet 14 is pressed, the body sheet 14 is pressurized and moved to the space portion 18 in the right direction opposite to the flow direction of the fluid pressure in the conduit 12, thereby allowing the body sheet 14 to move. The contact surface 14a of the valve seat 34 is separated from the contact surface 34a of the valve seat 34, and a microgap is formed therebetween, and the fluid flows evenly through the microgap so that the valve disc in a state of blocking the conduit 12 ( The fluid pressure applied to 30 is dispersed.

이렇게 관로(12)의 유체압력을 분산시킨 상태에서 밸브원판(30)을 회전하여 관로(12)를 개방하게 되면 밸브원판(30)은 관로(12)를 차단된 상태에서도 유체압력에 의해 순간적으로 급격하게 개방되지 않고 보다 완만하게 개방할 수 있게 되므로 밸브원판(30)의 회전에 의한 제어조절이 용이하다.When the valve disc 30 is opened by opening the pipe 12 in a state in which the fluid pressure of the conduit 12 is dispersed, the valve disc 30 is instantaneously by the fluid pressure even when the conduit 12 is blocked. Since it is possible to open more gently without suddenly opening, it is easy to control and control by the rotation of the valve disc (30).

또한, 밸브원판(30)의 회전에 의하지 않고 바디시트(14)가 우측으로 이동되어 밸브시트(34)의 접촉면(34a)과 바디시트(14)의 접촉면(14a)이 분리되어 지므로 종래와 같이 밸브원판(30)이 급격하게 회전하는 과정에서 급격한 초기유량 과다와 시트에 밀착되는 접촉면의 변형 또는 마모율을 감소시키게 된다. In addition, since the body seat 14 is moved to the right side without rotating the valve disc 30, the contact surface 34a of the valve seat 34 and the contact surface 14a of the body seat 14 are separated. In the course of the rapid rotation of the valve disc 30 to reduce the rapid initial flow excess and the deformation or wear rate of the contact surface in close contact with the seat.

그리고 상기에서 밸브에 의한 관로(12)차단시에는 공기공급부(26)의 공기압력이 공기유입통로(24)에 유입되지 않도록 하고, 관로(12)를 개방하기 위한 밸브원판(30)의 회전시키기 직전에 바디시트(14)를 가압이동시킬 때에만 공기유입통로(24)에 공기압력이 유입되도록 함이 바람직하며, 상기 바디시트(14)를 가압이동시키 위한 공기압력은 관로(12)의 유체압력보다 큰 압력을 사용하여야 만이 바디시트(14)가 유체압력이 진행되는 반대방향으로 보다 용이하게 가압이동시킬 수 있게 됨은 물론이다.When the pipe line 12 is blocked by the valve, the air pressure of the air supply unit 26 does not flow into the air inlet passage 24, and the valve disc 30 is rotated to open the pipe line 12. It is preferable that the air pressure flows into the air inflow passage 24 only when the body sheet 14 is pressurized immediately before, and the air pressure for pressurizing the body sheet 14 is a fluid of the conduit 12. Only when a pressure larger than the pressure is used, the body seat 14 can be easily moved in the opposite direction in which the fluid pressure proceeds.

이상에서 본 발명은 상기 실시예를 참고하여 설명하였지만 본 발명의 기술사상 범위 내에서 다양한 변형실시가 가능함은 물론이다.In the above, the present invention has been described with reference to the above embodiment, but various modifications can be made within the technical scope of the present invention.

도 1은 본 발명의 밸브구성을 나타낸 평단면 예시도1 is a cross-sectional view showing a valve configuration of the present invention

도 2는 본 발명의 밸브원판 부분의 분해 단면도2 is an exploded cross-sectional view of a valve disc portion of the present invention.

도 3은 본 발명의 관로차단시의 요부확대 단면도Figure 3 is an enlarged cross-sectional view of the main part at the time of blocking the pipeline of the present invention

도 4는 본 발명의 관로개방직전에 바디시트를 공기압력에 의해 우측으로 Figure 4 is the body sheet to the right by air pressure immediately before opening the pipeline of the present invention

가압이동시킨 상태의 요부확대 단면도       Enlarged cross-sectional view of the main part under pressure

도 5는 본 발명의 도 4의 일부확대 단면도5 is a partially enlarged cross-sectional view of FIG. 4 of the present invention;

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 밸브본체 12 : 관로10: valve body 12: pipeline

14 : 바디시트 14a : 접촉면14 body sheet 14a contact surface

16 : 연장단부 18 : 공간부16: extension end 18: space

20 : 지지대 24 : 공기유입통로20: support 24: air inflow passage

26 : 공기공급부 30 : 밸브원판26: air supply unit 30: valve disc

32 : 회전축 34 : 밸브시트32: rotating shaft 34: valve seat

34a: 접촉면 36 : 백업링34a: contact surface 36: backup ring

38 : 유체유입구멍 38: fluid inlet hole

Claims (5)

밸브본체(10)의 관로(12)를 밸브원판(30)으로 개폐시키되 밸브본체(10)에 환형으로 구비된 바디시트(14)와 밸브원판(30)의 외주면에 구비된 밸브시트(34)가 밀착되게 설치되고 상기 밸브시트(34)는 관로의 유체압력에 의해 밸브시트의 접촉면을 밀착시킬 수 있도록 한 백업링(36)이 구비된 것에 있어서, Opening and closing the conduit line 12 of the valve body 10 by the valve disc 30, the body seat 14 provided in an annular shape in the valve body 10 and the valve seat 34 provided on the outer peripheral surface of the valve disc 30 Is installed in close contact with the valve seat 34 is provided with a back-up ring 36 to be in close contact with the contact surface of the valve seat by the fluid pressure of the pipe, 상기 바디시트(14)는 미세간격으로 좌우로 이동될 수 있게 형성된 공간부(18)에 설치되되The body sheet 14 is installed in the space 18 formed to be moved to the left and right at a fine interval 바디시트(14)의 우측상단부와 우측중간단부에는 바디시트(14)의 우측면(141)에 위치한 공간부(18)내에 유체가 유입되지 않도록 밀착패킹(15)(15')이 각각 끼워져서 관로(12)의 유체압력으로 바디시트(14)에 구비된 접촉면(14a)이 밸브시트(34)의 접촉면(34a)에 밀착되게 하고,In the upper right end and the right middle end of the body sheet 14, close packings 15 and 15 ′ are fitted to prevent the fluid from flowing into the space 18 located on the right side 141 of the body sheet 14. The contact surface 14a of the body seat 14 is brought into close contact with the contact surface 34a of the valve seat 34 by the fluid pressure of (12), 바디시트(14)의 좌측면(142)은 밸브본체(10)의 일측에 형성된 공기유입통로(24)와 연결되고 공기유입통로(24)의 선단은 바디시트(14)의 좌측면(142)에 접하는 위치에 형성되어 공기압력이 가해질 수 있게 한 공기공급부(26)의 공기압력으로 바디시트(14)를 우측으로 가압이동되게 하여 바디시트(14)의 접촉면(14a)이 밸브시트(34)의 접촉면(34a)과 분리되게 한 것을 특징으로 하는 버터플라이 밸브.The left side 142 of the body seat 14 is connected to the air inlet passage 24 formed on one side of the valve body 10 and the tip of the air inlet passage 24 is the left side 142 of the body seat 14. The contact surface 14a of the body seat 14 is pressurized to move to the right by the air pressure of the air supply unit 26 formed at a position in contact with the air supply unit 26 to allow the air pressure to be applied to the valve seat 34. Butterfly valve, characterized in that separated from the contact surface (34a). 삭제delete 삭제delete 제 1항에 있어서,The method of claim 1, 상기 바디시트(14)의 좌측상단부와 좌측하단부에 위치한 밸브본체(10)에 밀착패킹(11)(11')을 끼우되 The packing body (11) (11 ') is inserted into the valve body (10) located at the upper left and lower left of the body seat (14). 바디시트(14)의 접촉면(14a)좌측으로 연장단부(16)가 형성되고 그 연장단부(16)의 상면에는 밀착패킹(11')이 설치된 것을 특징으로 하는 버터플라이 밸브.Butterfly valve, characterized in that the extended end portion 16 is formed to the left side of the contact surface (14a) of the body seat 14 and the close packing (11 ') is provided on the upper surface of the extended end portion (16). 제 1항에 있어서,The method of claim 1, 상기 공간부(18)의 우측과 접하는 부분에 결착판(22)으로 지지된 지지대(20)를 설치하되To install the support 20 supported by the binding plate 22 in the portion in contact with the right side of the space 18, 상기 지지대(20)의 하단은 바디시트(14)의 우측면(141)에 관로(12)의 유체압력이 간접적으로 가해질 수 있도록 바디시트(14)의 우측면(141)하단과 동일한 수평선상으로 놓여지게 설치됨을 특징으로 하는 버터플라이 밸브.The lower end of the support 20 is placed on the same horizontal line as the lower end of the right side 141 of the body seat 14 so that the fluid pressure of the conduit 12 can be indirectly applied to the right side 141 of the body seat 14. Butterfly valve, characterized in that installed.
KR1020070099091A 2007-10-02 2007-10-02 Butterfly Valve KR100947423B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102034415B1 (en) 2019-07-19 2019-10-18 신홍열 Butterfly valve for flow control

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101076451B1 (en) * 2011-02-18 2011-10-25 (주)덕원기전 Triple-offsetstructured butterfly valve for sealing both side's pressure using multy sheet
WO2017011673A2 (en) * 2015-07-14 2017-01-19 Hartman Thomas A Spring ring valve seat and butterfly valve with spring ring valve seat
CN109268516A (en) * 2018-11-19 2019-01-25 郑州中特阀门有限公司 A kind of sealing gland slide hard seal butterfly valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980042500A (en) * 1996-11-16 1998-08-17 안장홍 Seat Spacer of Valve Unit
KR19990045849A (en) * 1999-01-26 1999-06-25 전덕조 A method for maintaining a seat life of a butterfly valve and an apparatus thereof
KR20070014912A (en) * 2005-07-29 2007-02-01 서광공업 주식회사 Apparatus preventing water leakage with pilot valve for butterfly valve
KR100750987B1 (en) 2007-05-18 2007-08-22 주식회사현대밸브 Preventing water leakage device with twin-sealing for butterfly valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980042500A (en) * 1996-11-16 1998-08-17 안장홍 Seat Spacer of Valve Unit
KR19990045849A (en) * 1999-01-26 1999-06-25 전덕조 A method for maintaining a seat life of a butterfly valve and an apparatus thereof
KR20070014912A (en) * 2005-07-29 2007-02-01 서광공업 주식회사 Apparatus preventing water leakage with pilot valve for butterfly valve
KR100750987B1 (en) 2007-05-18 2007-08-22 주식회사현대밸브 Preventing water leakage device with twin-sealing for butterfly valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102034415B1 (en) 2019-07-19 2019-10-18 신홍열 Butterfly valve for flow control

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