KR200458091Y1 - seal gasket mechanism of cryogenic ball valve - Google Patents

seal gasket mechanism of cryogenic ball valve Download PDF

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Publication number
KR200458091Y1
KR200458091Y1 KR2020090003133U KR20090003133U KR200458091Y1 KR 200458091 Y1 KR200458091 Y1 KR 200458091Y1 KR 2020090003133 U KR2020090003133 U KR 2020090003133U KR 20090003133 U KR20090003133 U KR 20090003133U KR 200458091 Y1 KR200458091 Y1 KR 200458091Y1
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South Korea
Prior art keywords
seal gasket
seat retainer
retainer
seat
gasket
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KR2020090003133U
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Korean (ko)
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KR20100009478U (en
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박헌근
남시환
이창섭
이상섭
박진성
김봉수
김광수
허선철
김정환
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피케이밸브 주식회사
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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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving 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
    • 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
    • F16K5/06—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
    • F16K5/0689—Packings between housing and plug
    • 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
    • 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
    • F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug

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

Abstract

본 고안은 액화천연가스용 볼밸브에서 유체의 누설을 방지하는 씰 가스켓 메카니즘에 관한 것으로, 비금속재의 씰 가스켓이 극저온하에서 경화수축되면서 밸브몸체와 시트리테이너 사이에서 틈새가 발생하여 유체가 누출되는 것을 방지하기 위하여 시트리테이너의 유체유입구측에 1차적으로 선단에 개구부를 형성한 립 씰 가스켓을 삽입하여 시트리테이너의 걸림턱에 걸려져 고정되게 하고 2차적으로 밸브몸체의 걸림턱에 고정되는 마름모꼴의 쐐기형 씰 가스켓을 삽입하고 쐐기형 씰 가스켓과 결합하는 립 씰형 가스켓을 삽입하여 복합 씰 가스켓을 형성하고 시트리테이너의 외경에 형성된 나사산에 리테이너 외경 너트를 장착하여 쐐기형 씰 가스켓과 립 씰형 가스켓이 결합하는 복합 씰 가스켓을 체결고정하게 한 것을 특징으로 한다.The present invention relates to a seal gasket mechanism that prevents leakage of fluid in a ball valve for liquefied natural gas.As a non-metal seal gasket is hardened and contracted under cryogenic temperatures, a gap is generated between the valve body and the seat retainer to prevent the fluid from leaking. To this end, insert a lip seal gasket with an opening at the tip of the seat retainer to the fluid inlet side of the seat retainer so that it is hooked to the seating jaw of the seat retainer and secondly is a rhombic wedge type fixed to the seating latch of the valve body. A composite seal gasket is formed by inserting a seal gasket and inserting a lip seal gasket that engages with a wedge seal gasket. A compound where a wedge seal gasket and a lip seal gasket are combined by mounting a retainer outer diameter nut on a thread formed in the outer diameter of the seat retainer. The seal gasket is fastened and fixed.

극저온, 액화천연가스, 볼밸브, 씰 가스켓, 립 씰 Cryogenic, LNG, Ball Valve, Seal Gasket, Lip Seal

Description

극저온용 볼밸브의 씰 가스켓 메카니즘{seal gasket mechanism of cryogenic ball valve}Seal gasket mechanism of cryogenic ball valve

본 고안은 극저온 상태로 냉각된 액화천연가스용 볼밸브에서 볼밸브 몸체와 시트리테이너 사이에 삽입되어 유체의 누설을 방지하는 씰 가스켓이 극저온의 영향으로 경화수축되어 유체를 누출시키는 것을 차단할 수 있게 하는 씰 가스켓 메카니즘에 관한 것이다.The present invention provides a seal gasket which is inserted between the ball valve body and the seat retainer in the cryogenically cooled liquefied natural gas ball valve to prevent the leakage of fluid so that the seal gasket can be cured and contracted under the influence of cryogenic temperature to prevent the fluid from leaking. A seal gasket mechanism.

천연가스는 저장의 편의를 위하여 통상 -196℃의 극저온에서 액화한 상태로 배관을 통하여 이송하며, 액화가스의 유로를 개폐하는 수단으로 사용되는 볼밸브는 볼과 접촉하는 시트리테이너에 장착되는 시트링과, 밸브몸체와 시트리테이너 사이에 삽입되는 씰 가스켓에 의하여 기밀을 유지할 수 있게 구성되어 있다.Natural gas is transported through pipes in a liquefied state at -196 ℃ for the convenience of storage, and the ball valve used as a means for opening and closing the flow path of liquefied gas is a seat ring mounted to the seat retainer in contact with the ball. And a seal gasket inserted between the valve body and the seat retainer.

종래 볼밸브의 기밀을 유지하기 위한 리테이너의 씰 가스켓 메카니즘은 도 1에 도시한 것과 같이 금속재의 볼(2)과 접촉하는 탄성을 가진 비금속재질의 시트링(6)과, 시트링을 보지하는 시트리테이너(3), 시트리테이너를 보조하는 스프링(4) 과 가이드(5) 및 밸브몸체(1)와 시트리테이너 사이로 유체의 누설을 방지하기 위하여 삽입되는 씰 가스켓(7)을 포함하여 구성된다.The seal gasket mechanism of the retainer for maintaining the airtightness of the conventional ball valve is a non-metal seat ring (6) having a resilient contact with the metal ball (2), as shown in Figure 1, the seat holding the seat ring It comprises a retainer (3), a spring (4) to assist the seat retainer and a guide (5) and a seal gasket (7) inserted between the valve body (1) and the seat retainer to prevent leakage of fluid.

그러나 씰 가스켓은 극히 낮은 온도에 노출되므로 통상적으로 사용되는 형태의 오링으로는 경화수축현상이 발생하여 시트리테이너와 밸브몸체 사이에서의 기밀을 유지할 수 없어 유체의 누출을 방지하기 어려웠다.However, since the seal gasket is exposed to extremely low temperatures, it is difficult to prevent fluid leakage since the O-ring of the commonly used type may cause hardening shrinkage to maintain airtightness between the seat retainer and the valve body.

본 고안은 씰 가스켓의 형상을 변경하여 극저온의 영향으로 씰 가스켓이 경화수축되더라도 유체의 압력에 의하여 씰 가스켓의 형상이 변형되어 시트리테이너와 밸브몸체 사이에서 기밀을 유지할 수 있게 구성하고, 또 다른 씰 가스켓은 시트 리테이너의 외경측에 체결되는 너트에 의하여 강제로 압입하여 씰과 씰이 접촉하면서 변형을 유도하여 시트리테이너와 밸브몸체 사이에 밀착될 수 있게 하는 구성을 제공하고 씰 가스켓은 내한성이 우수한 불소수지를 채용하여 경화수축되더라도 유체가 누출되는 것을 방지할 수 있게 하는 것을 목적으로 한다.The present invention is designed to maintain the airtightness between the seat retainer and the valve body by changing the shape of the seal gasket and the shape of the seal gasket due to the pressure of the fluid even if the seal gasket is cured by the effect of cryogenic temperature. The gasket is forcibly press-fitted by a nut fastened to the outer diameter side of the seat retainer to provide a configuration in which the seal and the seal come into contact with each other to induce deformation and to be in close contact with the seat retainer and the valve body. It is an object to employ a resin to prevent the fluid from leaking even if it is cured.

본 고안은 시트리테이너와 밸브몸체 사이의 기밀을 유지하기 위하여 2중의 씰 가스켓을 장착하되, 1차적으로 하나의 씰은 유체가 유입되는 쪽에 개구부를 형성한

Figure 112009016388717-utm00001
형의 립(lip) 씰을 장착하여 밸브 내부에 압력이 가해질 때 립 씰은 개구부에 작용하는 압력으로 입구가 벌어져 시트리테이너와 밸브몸체 사이의 간격을 폐쇄하여 누설을 방지하고, 2차적으로 또 다른 씰은 쐐기형의 씰과 개구부를 형성한 립 씰을 조합하여 시트리테이너의 외경에 장착되는 너트를 전진시켜 립 씰의 개구부에 쐐기형의 씰이 결합되게 하여 립 씰의 개구부가 쐐기형 씰에 의하여 벌어지면서 밸브몸체와 시트리테이너 사이에 밀착되게 하여 기밀을 유지하게 하며, 리테이너 외경 너트의 체결력을 조정하여 씰의 밀착력을 가감할 수 있게 구성한다.The present invention is to install a double seal gasket in order to maintain the airtight between the seat retainer and the valve body, the first seal is formed by the opening in the fluid inflow side
Figure 112009016388717-utm00001
When a lip seal of the type is mounted and the pressure is applied to the inside of the valve, the lip seal is opened by the pressure acting on the opening to close the gap between the seat retainer and the valve body to prevent leakage, and secondly The seal combines the wedge-shaped seal and the lip seal forming the opening to advance the nut mounted on the outer diameter of the seat retainer so that the wedge-shaped seal is coupled to the opening of the lip seal so that the opening of the lip seal is opened by the wedge-shaped seal. As it opens, it is in close contact with the valve body and the seat retainer to maintain the airtightness, and it is configured to adjust the tightening force of the retainer outer diameter nut to add or decrease the adhesion of the seal.

본 고안은 액화천연가스용으로 사용되는 볼밸브에서 극저온으로 인하여 씰 가스켓이 경화수축되더라도 시트리테이너와 밸브몸체 사이에서 유체가 누설되는 것을 방지할 수 있을 뿐 아니라 씰 가스켓을 시트리테이너에서 쉽게 분리 및 결합할 수 있어 씰 가스켓을 용이하게 유지보수 할 수 있게 하는 효과가 있다.The present invention not only prevents fluid leakage between the seat retainer and the valve body even when the seal gasket is cured due to cryogenic temperature in the ball valve used for liquefied natural gas, and the seal gasket can be easily separated from the seat retainer. As a result, the seal gasket can be easily maintained.

이하에서 본 고안의 바람직한 실시 예에 대하여 첨부한 도면을 참조하여 상세하게 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 고안 볼밸브의 단면도이며, 도 3은 본 고안 시트리트레이너와 씰 가스켓이 결합되는 상세단면도이다.Figure 2 is a cross-sectional view of the subject innovation ball valve, Figure 3 is a detailed cross-sectional view of the present invention the seat retrainer and the seal gasket is coupled.

본 고안의 구성에 대한 상세한 설명에 앞서 종래의 구성과 동일한 본 고안의 구성은 종래의 도면기호와 동일하게 사용하기로 한다.Prior to the detailed description of the configuration of the present invention, the configuration of the present invention that is the same as the conventional configuration will be used the same as the conventional reference numerals.

도 2 내지 도 3에 도시한 바와 같이 본 고안은 밸브몸체(1)의 내부유로를 개폐하는 수단으로서 밸브대(14)를 통해 회동가능하게 결합된 금속재의 볼(2)을 구비하고, 상기 볼(2)과 접촉하는 시트의 구조로서 탄성을 지닌 비금속재의 시트링(6)과 상기 시트링(6)을 보지하기 위한 시트리테이너(3), 상기 시트리테이너(3)를 볼(2)쪽으로 탄력지지하는 밸브몸체(1) 내부에 설치된 스프링(4) 및 스프링 가이드(5), 상기 시트리테이너(3)와 밸브몸체(1) 간의 유체누설을 방지토록 하는 시트 리테이너(3)와 밸브몸체(1) 사이에는 1차적으로 삽입되는 탄성재인 립 씰 가스켓(8)과, 2차적으로 삽입되는 쐐기형 씰 가스켓(9)과 립 씰형 가스켓(10)이 조합되는 복합 씰 가스켓(11)을 포함하는 시트리테이너(3)를 구비하고 있다.As shown in FIGS. 2 to 3, the present invention includes a metal ball 2 rotatably coupled through a valve seat 14 as a means for opening and closing an internal flow path of the valve body 1. The seat ring 6 made of a non-metal material having elasticity as the structure of the sheet in contact with the seat 2, the seat retainer 3 for holding the seat ring 6, and the seat retainer 3 are elastic toward the ball 2. A spring 4 and a spring guide 5 installed inside the supporting valve body 1, a seat retainer 3 and a valve body 1 for preventing fluid leakage between the seat retainer 3 and the valve body 1; ), A sheet including a composite seal gasket (11) in which a lip seal gasket (8), which is an elastic material inserted primarily, and a wedge-shaped seal gasket (9) and a lip seal type gasket (10), which are inserted secondly are combined. The retainer 3 is provided.

상기 복합 씰 가스켓(11)이 볼(2) 쪽을 향하는 방향, 시트리테이너(3)의 외경방향에는 리테이너 외경 너트(12)가 구비되어 복합 씰 가스켓(11)을 시트리테이너(3)에 강하게 압입하여 고정하게 구성된다.A retainer outer diameter nut 12 is provided in a direction in which the composite seal gasket 11 faces the ball 2 and an outer diameter direction of the seat retainer 3 to press the composite seal gasket 11 strongly into the seat retainer 3. It is configured to be fixed.

시트리테이너(3)에 1차적으로 장착되는 립 씰 가스켓(8)은 시트리테이너(3)의 외경에 억지끼움되어 시트리테이너의 걸림턱에 걸려져 위치고정되며, 밸브몸체(1) 내부에 유체압력이 작용하면 유체유입구 쪽에 개구부가 형성된 립 씰 가스켓은 개구부가 벌어지면서 립이 밸브몸체(1)의 내벽과 시트리테이너(3)의 외경과 강하게 밀착되면서 기밀을 유지하게 되며, 밸브 내의 유체압력이 높아지면 압력에 비례하여 밀착력이 더욱 증가하게 된다.The lip seal gasket 8 mounted primarily on the seat retainer 3 is forcibly fitted to the outer diameter of the seat retainer 3 and is locked to the locking jaw of the seat retainer. When this action is applied, the lip seal gasket having an opening on the fluid inlet side maintains hermeticity as the lip is in close contact with the inner wall of the valve body 1 and the outer diameter of the seat retainer 3 as the opening opens, and the fluid pressure in the valve is high. The adhesion is further increased in proportion to the ground pressure.

시트리테이너(3)에 2차적으로 장착되는 복합 씰 가스켓(11)은 밸브몸체(1)에 형성된 걸림턱에 걸려져 위치고정되며, 유체유입구와 반대편에 위치하는 시트리테이너(3)의 선단외경에 형성된 나사산(13)에 체결되는 리테이너 외경 너트(12)에 의하여 밸브몸체(1)의 걸림턱과의 사이에서 압입되어 고정된다.The composite seal gasket (11), which is secondarily mounted on the seat retainer (3), is fixed to the locking jaw formed in the valve body (1), and is positioned and fixed to the tip outer diameter of the seat retainer (3) opposite to the fluid inlet. The retainer outer diameter nut 12 fastened to the formed thread 13 is press-fitted and fixed between the locking jaw of the valve body 1.

복합 씰 가스켓(11)은 마름모꼴을 한 쐐기형 씰 가스켓(9)에 앞쪽에 개구부가 형성된 립 씰형 가스켓(10)이 결합하여 형성되며, 립 씰형 가스켓(10)은 리테이너 외경 너트(12)에 의하여 전진하면서 쐐기형 씰 가스켓(9)과 결합하게 되면 립 씰형 가스켓(10)의 개구부가 벌어지면서 시트리테이너(3)와 밸브몸체(1) 사이의 간 격을 강하게 밀착시켜 유체의 누설을 방지할 수 있게 한다.The composite seal gasket (11) is formed by combining a lip seal type gasket (10) having an opening in the front with a rhombic wedge shaped seal gasket (9), and the lip seal type gasket (10) is formed by a retainer outer diameter nut (12). When combined with the wedge seal gasket (9) while moving forward, the opening of the lip seal gasket (10) opens and the gap between the seat retainer (3) and the valve body (1) is tightly adhered to prevent fluid leakage. To be.

쐐기형 씰 가스켓(9)과 립 씰형 가스켓(10)이 접촉되는 부위는 서로 다른 각도를 형성하여 쐐기형 씰 가스켓(9)이 립 씰형 가스켓(10)의 개구부에 삽입될 시 립 씰형 가스켓(10)의 개구부가 용이하게 벌어질 수 있게 구성되는 것이 바람직하다.Where the wedge-shaped gasket 9 and the lip seal-type gasket 10 are in contact with each other, they form different angles so that when the wedge-shaped gasket 9 is inserted into the opening of the lip seal-type gasket 10, the lip seal gasket 10 It is preferable that the opening of the) be configured to be easily opened.

따라서 리테이너 외경 너트(12)를 체결력을 조절하면 복합 씰 가스켓(11)의 밀착력을 임의로 제어할 수 있다.Therefore, by adjusting the clamping force of the retainer outer diameter nut 12, it is possible to arbitrarily control the adhesion of the composite seal gasket (11).

본 고안은 액체상태의 천연가스를 취급하는 볼 밸브에 적용이 가능하다.The present invention is applicable to the ball valve for handling the natural gas in the liquid state.

도 1은 종래 볼밸브의 시트리테이너와 씰이 결합되는 단면도1 is a cross-sectional view of the seat retainer and the seal of the conventional ball valve coupled

도 2는 본 고안 볼밸브의 단면도2 is a cross-sectional view of the subject innovation ball valve

도 3은 본 고안 시트리테이너와 씰 가스켓이 결합되는 상세단면도Figure 3 is a detailed cross-sectional view of the present invention seat retainer and the seal gasket is coupled

※ 도면의 주요부분에 대한 부호의 설명[Description of Drawings]

1. 밸브몸체 2. 볼1. Valve body 2. Ball

3. 시트리테이너 4. 스프링3. Seat Retainer 4. Spring

5. 가이드 6. 시트링5. Guide 6. Seating

7. 씰 가스켓 8. 립 씰 가스켓7. Seal Gasket 8. Lip Seal Gasket

9. 쐐기형 씰 가스켓 10. 립 씰형 가스켓9. Wedge Seal Gasket 10. Lip Seal Gasket

11. 복합 씰 가스켓 12. 리테이너 외경 너트11.Composite seal gasket 12.Retainer outer diameter nut

13. 나사산 14. 밸브대13. Thread 14. Valve Seat

Claims (2)

금속재의 볼(2)과 볼(2)에 접촉하는 비금속재의 시트링(6), 상기 시트링(6)을 보지하기 위한 시트리테이너(3), 상기 시트리테이너(3)를 볼(2) 쪽으로 밀어주는 스프링(4), 상기 시트리테이너(3)와 밸브몸체(1) 사이에 삽입되는 씰 가스켓(7)을 포함하는 시트구조를 가지는 극저온용 볼 밸브에 있어서,The metal ring 2 and the non-metal seat ring 6 in contact with the ball 2, the seat retainer 3 for holding the seat ring 6, and the seat retainer 3 toward the ball 2. In the cryogenic ball valve having a seat structure comprising a spring (4) for pushing, a seal gasket (7) inserted between the seat retainer (3) and the valve body (1), 상기 시트리테이너(3)의 유체유입구측에 1차적으로 선단에 개구부를 형성한
Figure 112011033943198-utm00002
형상을 한 립 씰 가스켓(8)을 삽입하여 시트리테이너(3)의 걸림턱에 걸려져 고정되게 하고 2차적으로 밸브몸체의 걸림턱에 고정되는 마름모꼴의 쐐기형 씰 가스켓(9)을 삽입하고 쐐기형 씰 가스켓(9)과 결합하는 립 씰형 가스켓(10)을 삽입하여 복합 씰 가스켓(11)을 형성하고 시트리테이너(3)의 외경에 형성된 나사산(13)에 리테이너 외경 너트(12)를 장착하여 복합 씰 가스켓(11)을 압입하여 체결고정 하고,An opening is formed at the tip of the seat retainer 3 primarily at the fluid inlet side.
Figure 112011033943198-utm00002
Insert the lip seal gasket (8) in the shape so that it is caught and fixed by the locking jaw of the seat retainer (3), and the wedge-shaped seal gasket (9) of the lozenge, which is secondly fixed to the locking jaw of the valve body, is inserted into the wedge. Insert the lip seal gasket (10) coupled with the seal seal gasket (9) to form a composite seal gasket (11), and the retainer outer diameter nut (12) is mounted on a thread (13) formed in the outer diameter of the seat retainer (3) Press-fit the composite seal gasket (11), 상기 쐐기형 씰 가스켓(9)과 립 씰형 가스켓(10)이 접촉되는 부분은 서로 다른 각도로 경사지게 형성하여 쐐기형 씰 가스켓(9)이 립 씰형 가스켓(10)의 개구부에 삽입될 시 립 씰형 가스켓(10)의 개구부의 립부분이 벌어질 수 있게 구성된 것을 특징으로 하는 극저온용 볼밸브의 씰 가스켓 메카니즘.The contact portion between the wedge seal gasket 9 and the lip seal gasket 10 is formed to be inclined at different angles so that the wedge seal gasket 9 is inserted into the opening of the lip seal gasket 10 when the lip seal gasket 10 is inserted therein. The seal gasket mechanism of the cryogenic ball valve characterized in that the lip portion of the opening of (10) can be opened. 삭제delete
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Cited By (3)

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KR101804945B1 (en) 2016-03-03 2017-12-06 국방과학연구소 High pressure sealing apparatus
KR20220120034A (en) 2021-02-22 2022-08-30 동아대학교 산학협력단 Check Valve for Cryogenic Temperature Fluid
KR20220138509A (en) 2021-04-02 2022-10-13 주식회사 아폴로 Sealing system of cryogenic ball valve

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CN103591326A (en) * 2013-11-18 2014-02-19 交城县鑫升机械有限公司 Top entry low temperature ball valve
ES2483090B1 (en) * 2013-12-11 2015-05-11 Valvospain, S.L. Guided cryogenic ball valve
EP3343076A1 (en) * 2016-12-28 2018-07-04 Bac Valves, S.A. Ball valve with a cryogenic seat
CN114754159A (en) * 2021-01-12 2022-07-15 纳福希（上海）阀门科技有限公司 Top-mounted ultra-low temperature soft sealing fixed ball valve
CN118224352A (en) * 2024-05-24 2024-06-21 靖江市三菱暖通机械制造有限公司 Three-way valve body that leakproofness is good

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Publication number Priority date Publication date Assignee Title
KR101804945B1 (en) 2016-03-03 2017-12-06 국방과학연구소 High pressure sealing apparatus
KR20220120034A (en) 2021-02-22 2022-08-30 동아대학교 산학협력단 Check Valve for Cryogenic Temperature Fluid
KR20220138509A (en) 2021-04-02 2022-10-13 주식회사 아폴로 Sealing system of cryogenic ball valve

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