KR20030071724A - A sealing structure of Trunnion type ball valve - Google Patents

A sealing structure of Trunnion type ball valve Download PDF

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Publication number
KR20030071724A
KR20030071724A KR1020030057116A KR20030057116A KR20030071724A KR 20030071724 A KR20030071724 A KR 20030071724A KR 1020030057116 A KR1020030057116 A KR 1020030057116A KR 20030057116 A KR20030057116 A KR 20030057116A KR 20030071724 A KR20030071724 A KR 20030071724A
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KR
South Korea
Prior art keywords
seat
spring
fluid
ball
prevent
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KR1020030057116A
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Korean (ko)
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KR100519554B1 (en
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구종환
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구종환
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Priority to KR10-2003-0057116A priority Critical patent/KR100519554B1/en
Publication of KR20030071724A publication Critical patent/KR20030071724A/en
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Publication of KR100519554B1 publication Critical patent/KR100519554B1/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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0663—Packings
    • 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

PURPOSE: A sealing structure of a trunnion type ball valve is provided to prevent a fluid leakage caused by a fire effectively and apply a uniform pressure on a seat retainer. CONSTITUTION: A sealing structure of a trunnion type ball valve comprises a ball(1) closing or opening the flow of a fluid, a seat ring(2) preventing the fluid from being leaked to the outside through a body(4) at the operation of the ball, a seat retainer(3) pushing the seat ring with an elastic force of a spring(7), a graphite(9) disposed among the seat retainer, a seat insert(6), and a body to prevent the fluid leakage, a space ring(10) disposed between the seat retainer and the seat insert to prevent the fluid leakage, the seat insert(6) pressing the space ring and the graphite with the elastic force of the spring to prevent the fluid leakage, the spring(7) pushing the seat retainer and the seat insert toward the ball to prevent the fluid leakage, a spring holder(8) restraining the movement of the spring and fixing the spring to push the seat retainer and the seat insert toward the ball with regular force, an O-ring(5) disposed between the seat retainer and the body to prevent the fluid leakage, and the body(4) covering the composition units related to the sealing of the ball valve.

Description

트루니언 형 볼밸브의 실링(Sealing) 구조 {A sealing structure of Trunnion type ball valve}Sealing structure of Trunnion type ball valve

본 발명은 볼 형태의 개폐수단을 가지는 볼 밸브에 있어서 실링 장치의 개선과 밸브조작력 축소에 관한 것으로서 특히 화재 발생시에도 안정적인 밸브기능을 유지할 수 있도록 된 볼밸브용 실링을 보다 효과적으로 하게 한 것이다.The present invention relates to the improvement of the sealing device and the reduction of the valve operation force in the ball valve having a ball-shaped opening and closing means, and more particularly to the ball valve sealing that can maintain a stable valve function even in the event of a fire.

본 발명에 관련된 볼밸브의 일반적인 시트구조는 탄력성이 있는(테프론,나일론 등) 시트링(2)과 이를 유지하는 시트리테이너(3) , 몸체(4)와 시트리테이너(3) 사이로 흘러드는 유체를 막아주기 위한 오링(5), 시트리테이너(3)를 보조하기위한 스프링(7)을 포함하는 시트 구조를 가지고 있으며, 비금속재인 시트링(2)과 금속재인 볼(1)간의 탄력적 접촉에 의하여 누수를 방지하여 주고 있다. 그러나 이러한 구조의 경우에는 배관 관로상의 유체가 물이나 저온가스등과 같은 경우 온도조건이 높지 않기 때문에 기밀성이 보장되지만, 화재가 발생할 경우에 상기 나일론이나 테프론의 재질을 가진 시트링, 시트리테이너 및 오링이 녹아 없어져 유체가 누설되어 밸브로서의 기능을 다하지 못하게 된다. 또한 다양한 재료를 사용하여 화재에 대비하고 있으나 구조적으로 많은 모순과 조작력을 과대하게 하여 밸브를 돌리는데 큰 힘을 필요로 하게 되고, 이는 액츄레이터 선정시 큰 용량의 액츄레이터를 필요로 하여 결국 보다 많은 제조원가의 상승을 가져온다.The general seat structure of the ball valve according to the present invention is a fluid (teflon, nylon, etc.) seat ring (2) and the seat retainer (3) holding it, the fluid flowing between the body (4) and the seat retainer (3) It has a seat structure including an O-ring (5) for blocking and a spring (7) for assisting the seat retainer (3), and leaks due to elastic contact between the non-metal seating ring (2) and the metal ball (1). To prevent. However, in such a structure, airtightness is guaranteed because the fluid in the pipe line is not high in temperature, such as water or low temperature gas, but in case of fire, the seat ring, seat retainer and O-ring made of nylon or Teflon It melts away and leaks the fluid, which prevents it from functioning as a valve. In addition, various materials are used to prepare for fire, but structural contradictions and excessive operating force require a large force to turn the valve, which requires a large capacity actuator to select more actuators. Brings a rise.

최근에 가공 장비와 기술이 발전되어 실링 소재로서 금속재의 사용이 가능하게 됨으로써 그 활용범위가 폭 넓게 확산되어가고 있다. 그러나 이러한 실링에 대한 문제점의 극복에도 불구하고 밸브 몸체와 시트리테이너 사이의 실링은 대체로 고무제질의 오링이나 테프론류의 오링을 사용하므로 열화에 의해 실링이 손상 또는 소실됨으로서 밸브 몸체와 시트리테이너 사이로 누수가 발생되는 등 밸브의 기능을 상실하는 문제점이 있었다.Recently, processing equipment and technology have been developed to enable the use of a metal material as a sealing material has been widely used. However, in spite of overcoming the problem of the sealing, the sealing between the valve body and the seat retainer generally uses a rubber-made O-ring or a Teflon-type O-ring, so that the seal is damaged or lost due to deterioration and thus leaks between the valve body and the seat retainer. There was a problem such as loss of the function of the valve.

본 발명이 이루고자하는 기술적 과제는 상기의 문제점을 인식하고 시간이 경과함에 따라서 개폐볼과의 접속면의 마모에 의하여 발생하는 누수를 방지하고, 화재가 발생하여 볼밸브 몸체와 시트리테이너 사이에 누수를 방지하기 위해 장착되는 시트링, 오링 및 시트리테이너 등이 열화에 의하여 손상되거나 소실되어도 밸브로서의 기능을 상실하지 않고 볼밸브로서의 작동을 그대로 유지할 수 있도록 몸체와 시트리테이너 사이에 얇은 그라파이트를 말아 넣은 구조로 개선함으로서 안정성과 우수한 기밀성, 그리고 작은 조작력을 가진 밸브의 실링 구조를 구현하는데 있다.The technical problem to be achieved by the present invention is to recognize the above problems and to prevent the leakage caused by the wear of the contact surface with the opening and closing ball with the passage of time, the fire occurs to leak between the ball valve body and the seat retainer Thin graphite is rolled between the body and the seat retainer so that the seat ring, the O-ring, and the seat retainer, which are mounted to prevent damage, are damaged or lost due to deterioration, so that the function as a ball valve can be maintained without losing its function as a valve. The improvement is to realize the sealing structure of the valve with stability, good air tightness and small operation force.

도 1은 일반적인 시트구조를 나타낸 단면도.1 is a cross-sectional view showing a general sheet structure.

도 2은 도1에 대하여 시트구조를 확대한 상세도2 is an enlarged detailed view of a sheet structure with respect to FIG.

도 3은 본 발명에 따른 볼밸브의 실링 장치를 나타내는 사시도.3 is a perspective view showing a sealing device of a ball valve according to the present invention.

도 4은 도 3에 대한 종단면도.4 is a longitudinal cross-sectional view of FIG. 3.

도 5은 4에 대하여 실링 장치 부분을 확대한 상세도.Fig. 5 is an enlarged detail of the sealing device with respect to 4;

도 6은 누설 방향을 나타낸 상세도.6 is a detailed view showing a leak direction.

<도면의주요 부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

1 : 볼(Ball) 2 : 시트링3 : 시트리테이너1 Ball 2 Seat Ring 3 Seat Retainer

4 : 몸체(Body) 5 : 오링6 : 시트인스트4: Body 5: O-ring 6: Seat ins

7 : 스프링8 : 스프링 홀더9 : 그라파이트(Graphite)7 Spring 8 Spring Holder 9 Graphite

10 : 스페이스링10: space ring

본 발명은 화재시 볼 밸브의 시트링과 볼사이의 유체의 누설을 시트리테이너와 볼의 금속접촉으로 방지하고 시트리테이너 뒤쪽의 누설은 시트인서트가 스프링에 탄력에 의해 볼쪽으로 움직여 그라파이트(Graphite)를 눌러서 유체의 누설을 방지하는 볼 밸브의 실링구조에 관한 것이다. 도 1은 일반적인 시트구조를 나타낸 단면도이고, 도2는 도1에 대하여 시트부분을 확대시킨 상세도이며, 도 3은 볼밸브용 실링 장치를 나타낸 사시도이고, 도 4는 도3에 대한 종단면도를 나타내며, 도 5은 도4에대하여 실링장치 부분을 확대시킨 상세도를 나타낸다.The present invention prevents the leakage of fluid between the seat ring of the ball valve and the ball by the metal contact between the seat retainer and the ball in case of fire, and the leak behind the seat retainer moves graphite toward the ball by elasticity of the spring. It relates to a sealing structure of a ball valve by pressing to prevent leakage of fluid. 1 is a cross-sectional view showing a general seat structure, Figure 2 is a detailed view of the seat portion enlarged with respect to Figure 1, Figure 3 is a perspective view showing a sealing device for a ball valve, Figure 4 is a longitudinal cross-sectional view of Figure 3 FIG. 5 shows an enlarged detail of the sealing apparatus portion with respect to FIG. 4.

상기의 도면을 통해서 본 발명에 따른 구성을 구체적으로 살펴보면, 유체의 흐름을 차단 또는 개방하는 개폐수단을 가지는 볼(1)과, 탄력성을 가지고 있는 테프론 또는 나일론등의 재질로 이루어진 시트링(2)과, 이를 유지시켜주는 시트리테이너(3)와, 몸체(4)와 시트리테이너(3)사이로 흘러드는 유체를 막아주기 위한 오링(5)과, 볼(1)과의 접속 면이 마모가 되어 누수가 발생할 경우에 이를 방지하기 위하여 일정한 힘으로 시트리테이너(3)와 시트인스트(6)를 밀어주는 스프링(7)과, 스프링이 항상 일정한 탄성력을 발휘할 수 있도록 스프링을 잡아주는 스프링홀더(8)를 구비하고, 그리고 화재 발생시를 대비한 그라파이트(9)와 열에 취약한 스페이스링(10) 으로 구성되어져 있다. 이 경우 화재 발생시 두 방향으로 누수가 일어날 수 있는데, 하나는 볼(1)과 시트링(2)사이에서의 유체의 누설이고, 다른 하나는 시트리테이너 뒤면으로의 누설이다. 상기 유체가 누설되는 원인과 누설을 방지할 수 있는 스프링의 힘과의 관계를 살펴보면,Looking specifically at the configuration according to the present invention through the drawings, the ball (1) having an opening and closing means for blocking or opening the flow of fluid, and the seat ring (2) made of a material such as Teflon or nylon having elasticity And the seat retainer 3 holding it, the O-ring 5 for preventing the fluid flowing between the body 4 and the seat retainer 3, and the contact surface between the ball 1 wear and leak. Spring 7 for pushing the seat retainer 3 and seat int 6 with a constant force to prevent this from occurring, and a spring holder 8 for holding the spring so that the spring can exert a constant elastic force at all times. It is provided with a graphite ring 9 and a space ring 10 vulnerable to heat in case of fire. In this case, leakage may occur in two directions during a fire, one of which is a leakage of fluid between the ball 1 and the seat ring 2 and the other of which is a leak to the rear of the seat retainer. Looking at the relationship between the cause of the fluid leakage and the force of the spring to prevent leakage,

볼쪽으로 밀어주는 힘(F1)은The force to push towards the ball (F1)

이고, 유체의 압력에 의하여 반발하는 힘(F2)은And the force (F2) repulsed by the pressure of the fluid is

가 되고, 상기 식(1)과 (2)에서 d2가 d1 보다 크므로 F1이 F2보다 항상 크게 작용하게 된다. 따라서 d2를 d1보다 크게 설계할 경우에 화재에 의하여 시트링이 소실되어도 시트리테이너가 볼에 밀착되어 유체가 누설되는 것을 막아준다. 즉, 볼(1)과 시트링(2)사이에서의 유체의 누설은 화재시 발생하는 고열로 인해 시트링(2)이 소실되더라도 스프링(7)과 시트리테이너(3) 면적차에 의해 시트리테이너(3)가 볼(1)쪽으로 움직여 도5의 시트리테이너(3) A부가 볼(1)과 접촉하여 유체의 누설을 방지하게 된다.In Formulas (1) and (2), d2 is larger than d1, so that F1 always works larger than F2. Therefore, when d2 is designed to be larger than d1, even if the seat ring is lost due to fire, the seat retainer is in close contact with the ball to prevent the fluid from leaking. That is, the leakage of fluid between the ball 1 and the seat ring 2 is caused by the seat retainer due to the area difference between the spring 7 and the seat retainer 3 even if the seat ring 2 is lost due to the high heat generated in the fire. (3) moves toward the ball 1 so that the A portion of the sheet retainer 3 of FIG. 5 is in contact with the ball 1 to prevent leakage of the fluid.

본 발명에 따른 볼 밸브의 또 다른 특징적인 구성인 화재에 의하여 스페이스링이 소실되면 시트인서트가 스프링의 탄력에 의하여 볼쪽으로 움직여 그라파이트(Graphite)를 눌러 줌으로써 누설을 방지하는 실링구조에 관한 것이며, 특히 그라파이트의 삽입할 시에 얇은 그라파이트판(막)를 말아서 넣으므로 탄력을 적당히 유지시켜서 시트인스터(6)가 소실되지 않은 상태에서는 스프링의 힘에 의하여 볼에 그다지 압력을 주지 않도록 하고, 화재나 열에 의하여 시트인스터(6)가 소실되면 밀착되어 유체가 누설되는 것을 방지할 수 있게 설계함으로써 작은 조작력으로 밸브를 쉽게 작동 할 수 있게 하는데 있다. 본 발명에 따른 볼밸브의 구조를 순서에 따라 구체적으로 살펴보면, a) 유체의 흐름을 차단하거나 개방하여주는 볼(1)과, 유체가 볼의 작동시에 몸체(4)를 통해서 외부로 누설되지 않게 막아주는 시트링(2)과, 상기 시트링을 스프링의 힘으로 밀어주는 시트리테이너(3)와, 상기 시트리테이너(3), 시트인서터(6) 및 몸체사이에 위치하여 화재시에 유체가 누설됨을 방지하는 그라파이트(9)와, 상기 시트리테이너(3)와 시트인스터(6)사이에 위치하여 유체의 누설을 방지하는 스페이스링(10)과, 상기 스페이스링과 그라파이트(9)를 스프링(7)의 힘으로 눌러주어 유체의 누설을 방지하는 시트인서트(6)와, 상기 시트리테이너(3)와 시트인스터(6)를 볼쪽으로 밀착시켜 유체의 누설을 방지하는 스프링(7)과, 상기 스프링의 움직임을 방지하여 일정한 힘으로 시트리테이너(3)와 시트인스터(6)를 볼쪽으로 밀어주도록 스프링을 고정시켜 주는 스프링홀더(8)와, 상기 시트리테이너(3)와 몸체사이에 존재하여 유체의 누설을 방지하는 오링(5)과, 상기 모든 구성들을 감싸고 있는 몸체(4)로 구성되어 있다. 상기한 바와 같이 본 발명에 따른 볼밸브는 일반 볼 밸브로 작동할 시와 화재시에 테프론이나 나일론 재질로 이루어진 구성이 소실되어도 볼 밸브로서의 재기능을 충분히 할 수 있도록 구성되어 있다.Another characteristic configuration of the ball valve according to the present invention when the space ring is lost by the fire relates to a sealing structure to prevent leakage by pressing the graphite (Graphite) by moving the seat insert toward the ball by the elasticity of the spring, in particular When the graphite is inserted, a thin graphite plate is rolled up so that the elasticity is properly maintained so that the ball is not pressurized by the force of the spring in a state where the seat insulator 6 is not lost. As a result, when the seat insulator 6 is lost, it is designed to be in close contact with the fluid and prevent leakage of the fluid so that the valve can be easily operated with a small operating force. Looking at the structure of the ball valve according to the present invention in detail, a) the ball (1) for blocking or opening the flow of the fluid, and the fluid does not leak to the outside through the body (4) during operation of the ball Between the seat ring (2) to prevent it from being blocked, the seat retainer (3) for pushing the seat ring with the force of the spring, the seat retainer (3), the seat inserter (6) and the body Graphite (9) to prevent the leakage of gas, the space ring (10) between the seat retainer (3) and the seat insulator (6) to prevent the leakage of fluid, and the space ring and graphite (9) Seat insert (6) pressurized by the force of the spring (7) to prevent the leakage of the fluid, and the spring retainer (3) and the seat retainer (6) in close contact with the ball toward the spring (7) And, by preventing the movement of the spring seat retainer (3) with a constant force A spring holder 8 for fixing the spring to push the seat insulator 6 toward the ball, an o-ring 5 between the seat retainer 3 and the body to prevent leakage of the fluid, and all the above configurations Consists of a body (4) surrounding them. As described above, the ball valve according to the present invention is configured to sufficiently function as a ball valve even when the configuration of Teflon or nylon is lost when operating as a general ball valve and in a fire.

본 발명은 상술한 바와 같은 구성 및 작용에 의하여 스프링으로 가압되는 한 쌍의 시트링을 개폐볼의 양측방향에서 접촉되도록 구성하고 있으나 시간이 경과함에 따라서 개폐볼과의 접속면의 마모가 발생했을 시 스프링의 힘을 이용해 시트링을 밀어줘 누수를 방지하는 효과가 있고, 화재 발생시에도 밸브로서의 기능을 상실할 우려가 없도록 탄성을 확보할 수 있으므로 유체의 누설을 방지하여 볼밸브의 안전성을 크게 향상시키는 효과가 있다. 또한 화재가 일어나지 않은 상태에서의 사용은 그라파이트판를 스프링이 누르지 않도록 얇은 그라파이트판을 말아서 사용함으로 몸체와 그라파이트사이의 마찰력이 작아져 밸브의 조작력을 줄이는 효과가 있다.The present invention is configured to contact a pair of seat ring pressurized by the spring by the configuration and action as described above in both directions of the opening and closing ball, but when the wear of the connection surface with the opening and closing ball with the passage of time It is effective to prevent leakage by pushing seat ring by the force of spring, and elasticity can be secured so that the function as a valve can not be lost even in the event of fire. It works. In addition, when the fire is not used, the thin graphite plate is rolled so that the spring is not pressed against the graphite plate, thereby reducing the friction force between the body and the graphite, thereby reducing the operation force of the valve.

Claims (3)

화재시에도 유체의 누설을 방지할 수 있는 트루니언 형 볼밸브의 실링(Sealing) 구조에 있어서.In the sealing structure of the trunnion ball valve which can prevent the leakage of fluid even in the case of fire. 상기 유체의 흐름을 차단하거나 개방하여주는 볼(1)과,Ball (1) for blocking or opening the flow of the fluid, 상기 유체가 볼의 작동시에 몸체(4)를 통해서 외부로 누설되지 않게 막아주는 시트링(2)과,A seat ring (2) which prevents the fluid from leaking to the outside through the body (4) during operation of the ball, 상기 시트링을 스프링(7)의 탄성력으로 밀어주는 시트리테이너(3)와,A seat retainer (3) for pushing the seat ring with the elastic force of the spring (7), 상기 시트리테이너(3), 시트인서터(6) 및 몸체사이에 위치하여 화재시에 유체가 누설됨을 방지하는 그라파이트(9)와,Graphite (9) positioned between the seat retainer (3), seat inserter (6) and the body to prevent fluid leakage in the event of a fire, 상기 시트리테이너(3)와 시트인스터(6)사이에 위치하여 유체의 누설을 방지하는 스페이스링(10)과,A space ring 10 positioned between the seat retainer 3 and the seat insulator 6 to prevent leakage of the fluid; 상기 스페이스링과 그라파이트(9)를 스프링(7)의 탄성력으로 눌러주어 유체의 누설을 방지하는 시트인서트(6)와,A seat insert 6 for pressing the space ring and the graphite 9 with the elastic force of the spring 7 to prevent leakage of the fluid; 상기 시트리테이너(3)와 시트인스터(6)를 볼쪽으로 밀착시켜 유체의 누설을 방지할 수 있는 탄성력을 구비한 스프링(7)과,A spring 7 having an elastic force capable of bringing the seat retainer 3 and the seat insulator 6 into close contact with the ball to prevent leakage of the fluid; 상기 스프링의 움직임을 방지하여 일정한 힘으로 시트리테이너(3)와 시트인스터(6)를 볼쪽으로 밀어주도록 스프링을 고정시켜 주는 스프링홀더(8)와,Spring holder (8) for fixing the spring to prevent the movement of the spring to push the seat retainer (3) and seat sealer (6) toward the ball with a constant force, 상기 시트리테이너(3)와 몸체사이에 존재하여 유체의 누설을 방지하는 오링(5)과,An O-ring 5 present between the seat retainer 3 and the body to prevent leakage of fluid; 상기 볼 밸브의 실링과 관련된 구성수단들을 감싸고 있는 몸체(4)로 구성됨을 특징으로 하는 트루니언 형 볼밸브의 실링(Sealing) 구조.Sealing structure of the trunnion ball valve, characterized in that the body (4) surrounding the constituent means associated with the sealing of the ball valve. 청구항1에 있어서,The method according to claim 1, 상기 그라파이트를 삽입 구성 수단에 있어서 밀착력을 높이는 탄성력을 가지도록 얇은 그라파이트 판을 말아서 위치시킴을 특징으로 하는 트루니언 형 볼밸브의 실링(Sealing) 구조.Sealing structure of the trunnion ball valve, characterized in that the graphite is rolled and positioned so as to have an elastic force to increase the adhesion in the insertion configuration means. 청구항1에 있어서,The method according to claim 1, 상기 스프링에 의하여 발생하는 밀착력(F1)이 유체의 압력에 의하여 발생하는 반발력(F2)보다 항상 크도록 설계됨을 특징으로 하는 트루니언 형 볼밸브의 실링(Sealing) 구조.Sealing structure of the trunnion ball valve, characterized in that the contact force (F1) generated by the spring is always designed to be larger than the repulsive force (F2) generated by the pressure of the fluid.
KR10-2003-0057116A 2003-08-19 2003-08-19 A sealing structure of Trunnion type ball valve KR100519554B1 (en)

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Cited By (5)

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KR100800976B1 (en) * 2006-07-24 2008-02-11 구종환 Top Entry Type Metal Seat Ball Valve Structure
CN102748496A (en) * 2012-07-18 2012-10-24 嘉士凯（苏州）阀门配件有限公司 Fireproofing ball valve
CN104455524A (en) * 2014-09-30 2015-03-25 江苏亿阀集团有限公司 Composite sealing low-temperature ball valve
KR101579205B1 (en) 2014-07-21 2016-01-04 대우조선해양 주식회사 Valve sealing system
KR102043122B1 (en) * 2019-05-23 2019-11-11 주식회사 옥광엔지니어링 Abnormal pressure control ball valve for marine plants and anomaly pressure control system including it

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KR101954163B1 (en) * 2017-05-24 2019-03-06 (주) 삼진정밀 Ball valve with external attachment type for leakage detection and wireless communication system at leakage
KR102024517B1 (en) 2017-06-07 2019-09-24 한우성 trunnion ball valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100800976B1 (en) * 2006-07-24 2008-02-11 구종환 Top Entry Type Metal Seat Ball Valve Structure
CN102748496A (en) * 2012-07-18 2012-10-24 嘉士凯（苏州）阀门配件有限公司 Fireproofing ball valve
KR101579205B1 (en) 2014-07-21 2016-01-04 대우조선해양 주식회사 Valve sealing system
CN104455524A (en) * 2014-09-30 2015-03-25 江苏亿阀集团有限公司 Composite sealing low-temperature ball valve
CN104455524B (en) * 2014-09-30 2017-06-20 江苏亿阀集团有限公司 A kind of compound seal cryogenic ball valve
KR102043122B1 (en) * 2019-05-23 2019-11-11 주식회사 옥광엔지니어링 Abnormal pressure control ball valve for marine plants and anomaly pressure control system including it

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