WO2015064825A1 - Insulation gasket provided with metal o-ring for high-temperature and high-pressure conditions - Google Patents

Insulation gasket provided with metal o-ring for high-temperature and high-pressure conditions Download PDF

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Publication number
WO2015064825A1
WO2015064825A1 PCT/KR2013/011546 KR2013011546W WO2015064825A1 WO 2015064825 A1 WO2015064825 A1 WO 2015064825A1 KR 2013011546 W KR2013011546 W KR 2013011546W WO 2015064825 A1 WO2015064825 A1 WO 2015064825A1
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Prior art keywords
metal
sealing member
ring
gasket
support plate
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PCT/KR2013/011546
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French (fr)
Korean (ko)
Inventor
김진태
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제일 이엔에스 주식회사
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Publication of WO2015064825A1 publication Critical patent/WO2015064825A1/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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • 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
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • 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
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/02—Electrically insulating joints or couplings
    • F16L25/026—Electrically insulating joints or couplings for flanged joints

Definitions

  • the present invention relates to an insulating gasket for high temperature and high pressure mounting of metal O-ring, and more particularly, to a stainless steel base plate having an insulating support plate of glass reinforced epoxy (GRE) material attached to both sides, and a shell of PTFE (polytetrafluoroethylene) material. It is a structure provided with the primary sealing member of the structure equipped with the reinforcement spring inside, and the secondary sealing member of the metal O-ring structure, and relates to the insulation gasket for high temperature and high pressure which has the outstanding sealing performance and insulation performance at high temperature.
  • GRE glass reinforced epoxy
  • a gasket is a component for preventing a fluid from leaking into a gap between two stationary pipes mainly interposed between two stationary pipes.
  • a gasket is interposed between two coupling parts where a fluid such as a valve or a pipe is transported to prevent leakage of fluid.
  • a sealing function to prevent foreign matter from entering into the inside.
  • the gasket having the above configuration is assembled between flanges for connecting valves or pipes, and the volume is compressed by the compressive force applied in the axial direction to block the flanges from the outside. Or contact with external air at the same time as the fluid such as a pipe, accompanied by heat deformation due to thermal contraction or thermal expansion due to a significant temperature difference between the temperature of the fluid and the outside air, and the gasket is a high temperature of fluid such as a valve or pipe
  • the high pressure and the overhang of the flange acts, resulting in various deformations and damages resulting in deterioration of the sealing properties.
  • the present applicant has developed a patent for developing a high temperature and high pressure insulation gasket having a structure as disclosed in the Republic of Korea Patent Publication No. 10-2013-0067176 (high temperature and high pressure insulation gasket) as a way to improve the above problems
  • the high temperature and high pressure insulating gasket includes a metal flat outer ring 30 configured to center and maintain the shape and concentricity of the gasket as shown in FIG. 1, and the flat outer ring 30 of the metal flat outer ring 30.
  • the second metal toothed body 21 is provided with a tooth-shaped unevenness formed so as to form a rounded convex surface, each of which has a concentric circle on the upper and lower surfaces of the upper body and the lower surface, and the second metal toothed body.
  • the high temperature and high pressure insulating gasket characterized by consisting of upper and lower inorganic laminated sheets (10, 11) of Mica material respectively adhered to the upper and lower surfaces of (21) or high temperature is applied. If there is, there is a risk of breaking the sealing circle due to expansion due to thermal change of the metal part.
  • a sealing device used between connections of a fluid pipe functioning as a fluid passage as shown in FIGS. 2 and 3 A planar metal plate having opposing surfaces and formed with openings to allow fluid to pass therethrough, a layer of dielectric material disposed on at least one of the opposing surfaces, and an inner groove and an outer groove formed on at least one of the opposing surfaces At least one of which is formed to penetrate the dielectric material layer and into the metal plate, which is completely enclosed around the opening, the primary seal member disposed in the inner groove, and the two disposed in the outer groove.
  • a sealing device used between the connection of the fluid piping including the primary seal member and the compression limiter is posted However, if a high temperature is applied, there is a risk of breaking the sealing circle due to expansion due to thermal change of the metal part.
  • the present invention has been made to improve the above-described problems of the prior art, a stainless steel original plate attached to both sides of an insulating support plate of Glass Reinforced Epox (GRE) material, and reinforced inside a shell of PTFE (Polytetrafluoroethylene) material It is a structure provided with the primary sealing member of a spring-loaded structure, and the secondary sealing member of a metal O-ring structure, Comprising: It is providing the insulation gasket for metal high temperature and high pressure mounting gaskets which has the outstanding sealing performance and insulation at high temperature. Shall be.
  • GRE Glass Reinforced Epox
  • PTFE Polytetrafluoroethylene
  • the present invention for achieving the above object is a planar annular metal plate and the opening is formed; An insulating support plate of an organic / inorganic composite material attached to both sides of the planar annular metal plate, wherein inner and outer grooves are formed on both side surfaces of the planar annular metal plate to which the insulating support plate is attached, respectively, A primary sealing member disposed; The secondary sealing member disposed in the outer groove; the metal O ring mounting high-temperature high-pressure insulating gasket, characterized in that each is provided as a means of the problem.
  • the organic-inorganic composite material is GRE (Glass Reinforced Epoxy) material
  • the primary sealing member is a structure in which a reinforcing spring is mounted inside the shell of the PTFE material
  • the secondary sealing member is a secondary sealing The member is characterized in that the mounting protrusion protruding from the inner insulating support plate is inserted into the mounting groove formed in the metal O ring.
  • the present invention constituted as described above is made of a primary sealing member and a metal of a structure in which an insulating support plate of glass reinforced epoxy (GRE) material is attached to both sides of a stainless steel disc, and a reinforcing spring is mounted inside a shell of PTFE material.
  • Insulation gasket for high temperature and high pressure with secondary sealing member of O-ring structure prevents secondary damage caused by fluid loss in case of fire by primary sealing member, and sealing due to thermal deformation by high temperature of primary sealing member
  • the secondary sealing member of the metal O-ring structure has sealing performance and insulation performance at high temperature, so it can be used in various fields such as valve bonnet, pipe flange, heat exchanger or pressure vessel. There is an advantage that can be widely applied.
  • FIG. 1 is a cross-sectional view showing a portion of a conventional insulating gasket for high temperature and high pressure;
  • FIG. 2 is a perspective view showing another conventional high temperature and high pressure insulating gasket
  • FIG. 3 is a cross-sectional view showing the entire surface of the insulating gasket for high temperature and high pressure of FIG.
  • FIG. 4 is an enlarged cross-sectional view of the primary and secondary sealing members respectively disposed in the high temperature and high pressure insulating gasket groove of FIG. 3.
  • FIG. 5 is a cross-sectional view showing the entire surface of the insulating gasket for high temperature and high pressure according to the present invention
  • FIG. 6 is a cross-sectional view showing a state before the sealing member is disposed in the inner groove and the outer groove in the portion A of FIG.
  • FIG. 7 is a cross-sectional view illustrating a sealing member disposed in an inner groove and an outer groove in a portion A of FIG. 5;
  • the present invention is an insulating gasket for high temperature and high pressure that can be used in a place where insulation is required in a line where high pressure fluid is used, and can be installed in a section where flanges of different materials are connected to prevent electrical corrosion, and has excellent insulation GRE It is possible to seal even at low body pressure by attaching the primary sealing member of PTFE shell with reinforcing spring in the material.In particular, it maintains the sealing property by exposure to high temperature for a short time until fire extinguishing in case of fire. It is characterized by an additional supplement to the secondary sealing member of the metal O ring structure.
  • the planar annular metal plate 20 having the opening 10 formed therein and oils attached to both sides of the planar annular metal plate 20. It is composed of an insulating support plate 30 of the inorganic composite material.
  • planar annular metal plate 20 is configured to center the gasket to maintain the shape and concentricity of the gasket as shown in FIG. 5, and to support the gasket to be used even at high pressure (Max ASME Class 2500). Play a role.
  • the insulating support plate 30 of the organic / inorganic composite material attached to both sides of the planar annular metal plate 20 uses GRE (Glass Reinforced Epoxy) material, which has high insulation and prevents leakage due to excessive body parts. It acts to prevent interference and deformation by external fluids or inflows.
  • GRE Glass Reinforced Epoxy
  • the GRE (Glass Reinforced Epoxy) material used in the present invention preferably uses LI-1 G10 and G11 materials of the National Electrical Manufacturers Association (NEMA), but is limited to only the above products.
  • NEMA National Electrical Manufacturers Association
  • an appropriate GRE (Glass Reinforced Epoxy) material can be selected and used as needed.
  • the insulating support plate 30 is located between the planar annular metal plate and the flange and serves to completely compensate for the incomplete contact surface between the planar annular metal plate 20 and the flange when the body part pressure of the flange (not shown), the metal of the flange When the hardness is less than the metal hardness of the planar annular metal plate 20 is configured to block the contact damage of the flange by the insulating support plate 30 during overpressure.
  • planar annular metal plate to which the insulating support plate 30 is attached forms inner grooves 40 and outer grooves 50 on both sides thereof to arrange the sealing members, as shown in FIGS. 5 to 7.
  • Figure 6 is a cross-sectional view showing a state before the sealing member is disposed in the inner groove and the outer groove in the portion A of Figure 5
  • Figure 7 is a sealing member disposed in the inner groove and the outer groove in the portion A of Figure 5 It is sectional drawing which showed state.
  • the inner groove 40 is formed at a portion where the inner insulating support plate 31 is positioned, and the primary sealing member disposed in the inner groove 40 is a reinforcing spring 62 inside a shell 61 made of PTFE. ) Is mounted.
  • the primary sealing member is equipped with a reinforcing spring inside a shell made of PTFE (Polytetrafluoroethylene) material to minimize deformation due to the cold flow phenomenon of existing PTFE products, and fine vibration during use. And stable deformation even in deformation of body buoyancy caused by loosening of bolts.
  • PTFE Polytetrafluoroethylene
  • the outer groove 50 is formed between the inner insulating support plate 31 and the outer insulating support plate 32, the secondary sealing member disposed in the outer groove 50 is sealed due to the weakness of the PTFE material in the event of fire (
  • a mounting protrusion 73 protruding from the inner insulating support plate 31 is provided in the mounting groove 72 formed in the metal O-ring 71. It is a structure to be inserted.
  • the part serrated by the structure of the metal O-ring 71 causes the bolt load to be concentrated in a small area for tight sealing even at a low body pressure, and uses a metal body to provide a cold flow ( Cold flow), resistance to breakage of overbody and main body is large, and the main body is strong to provide stability even in large size installation and handling.
  • a metal body to provide a cold flow ( Cold flow)
  • resistance to breakage of overbody and main body is large
  • the main body is strong to provide stability even in large size installation and handling.
  • due to the structure of metal O-ring 71 in case of fire It can secure sealing stability at high temperature and works to secure insulation by using high temperature insulating coating of inorganic material such as ceramic or Mica.
  • the material of the metal O ring 71 used in the present invention is a high temperature metal material, and specifically, it is preferable to use stainless steel 347 or Inconel 825 & ETC.
  • the metal O-ring-mounted insulating gasket for high temperature and high pressure has a function to compensate for the occurrence of play due to rapid thermal deformation such as thermal contraction or thermal expansion due to rapid thermal change by the structure as described above. It has the advantage that durability against overpressure and heat deformation of flange is remarkably improved, and it can be manufactured and installed in large size.
  • the reinforcement spring insertion hole 63 in FIG. 7 is an insertion hole formed to insert the reinforcement spring 62 in a shell 61 made of PTFE.
  • the present invention is a planar annular metal plate having an opening formed therein; An insulating support plate of an organic / inorganic composite material attached to both sides of the planar annular metal plate, wherein the planar annular metal plate to which the insulating support plate is attached is formed with inner grooves and outer grooves on both sides, respectively, A primary sealing member disposed; Secondary sealing member disposed in the outer groove; The metal O ring mounting high-temperature high-pressure insulating gasket, characterized in that each is provided in the form for the embodiment of the invention.
  • the organic-inorganic composite material is preferably a glass Reinforced Epoxy (GRE) material.
  • GRE Glass Reinforced Epoxy
  • the primary sealing member is preferably a structure in which a reinforcing spring is mounted in a shell of PTFE material.
  • the secondary sealing member is preferably a structure in which a mounting protrusion protruding from the inner insulating support plate is inserted into the mounting groove formed in the metal O ring.
  • the present invention is a stainless steel original plate with an insulating support plate made of Glass Reinforced Epox (GRE), and a primary sealing member and a metal O-ring structure having a structure in which a reinforcing spring is mounted inside a shell made of PTFE.
  • Insulation gasket for high temperature and high pressure with primary sealing member prevents secondary damage due to fluid loss in case of fire caused by primary sealing member and compensates for the disadvantages of breaking seal due to thermal deformation caused by high temperature of primary sealing member.
  • it can be widely applied to various fields such as valve bonnet, pipe flange, heat exchanger or pressure vessel. It is expected to be widely used in the industry.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)

Abstract

The present invention relates to an insulation gasket provided with a metal o-ring for high-temperature and high-pressure conditions, comprising: a first sealing member having a structure comprising a disk made from a stainless steel material, on two surfaces of which an insulation support plate made from a glass reinforced epoxy material (GRE) is adhered, and a reinforcement spring which is installed inside a shell made from a polytetrafluoroethylene (PTFE); and a second sealing member in the form of a metal o-ring structure. The present invention can prevent secondary damage due to loss of fluids by means of the first sealing member in case of a fire, and is provided with a sealing capability and an insulation capability at high heat by means of the second sealing member having a metal o-ring structure, and thus provides the advantage of wide application to a variety of areas, such as a valve bonnet, a pipe flange, a heat exchanger, or a pressure vessel.

Description

금속제 O링 장착 고온고압용 절연가스켓Insulation gasket for high temperature and high pressure with metal O-ring
본 발명은 금속제 O링 장착 고온고압용 절연가스켓에 관한 것으로, 더욱 상세하게는 GRE(Glass Reinforced Epox) 소재의 절연지지판이 양면에 부착된 스테인리스 소재 원판과, PTFE(Polytetrafluoroethylene) 소재의 쉘(shell) 내부에 보강스프링이 장착된 구조의 1차 밀봉부재 및 금속제 O링 구조의 2차 밀봉부재가 구비된 구조로서, 고온에서 뛰어난 밀봉성능과 절연성능을 갖는 고온고압용 절연가스켓에 관한 것이다.The present invention relates to an insulating gasket for high temperature and high pressure mounting of metal O-ring, and more particularly, to a stainless steel base plate having an insulating support plate of glass reinforced epoxy (GRE) material attached to both sides, and a shell of PTFE (polytetrafluoroethylene) material. It is a structure provided with the primary sealing member of the structure equipped with the reinforcement spring inside, and the secondary sealing member of the metal O-ring structure, and relates to the insulation gasket for high temperature and high pressure which has the outstanding sealing performance and insulation performance at high temperature.
일반적으로, 가스켓은 주로 정지된 두 관체 사이에 끼워져 그 관체간의 틈새로 유체가 누설되는 것을 차단시키기 위한 부품으로, 밸브 또는 파이프 등의 유체가 이송되는 두 결합부위 사이에 개재되어 유체의 누출을 방지함과 동시에 외부로부터 이물질이 내부로 유입되는 것을 방지하기 위한 실링기능을 갖도록 구성된다.In general, a gasket is a component for preventing a fluid from leaking into a gap between two stationary pipes mainly interposed between two stationary pipes. A gasket is interposed between two coupling parts where a fluid such as a valve or a pipe is transported to prevent leakage of fluid. At the same time it is configured to have a sealing function to prevent foreign matter from entering into the inside.
상기와 같은 구성을 갖는 가스켓은 밸브 또는 파이프 등을 연결하기 위한 플랜지 사이에 조립되어 축방향으로 가해지는 압축력에 의해서 그 부피가 압축되면서 플랜지 사이를 외부로부터 차단시키는 기능을 하며, 이때, 가스켓은 밸브 또는 파이프 등의 유체와 접촉하는 동시에 외부공기와 접촉하게 되고, 유체의 온도와 외부 공기의 상당한 온도차이에 따른 열수축 또는 열팽창 등에 의한 열변형이 수반되며, 가스켓에는 밸브 또는 파이프 등의 유체의 고온과 고압 그리고 플랜지의 과체부가 작용하게 되고, 이로 인해 여러 가지의 변형과 손상이 발생되면서 실링성의 저하를 초래하는 등의 문제점이 발생하게 된다.The gasket having the above configuration is assembled between flanges for connecting valves or pipes, and the volume is compressed by the compressive force applied in the axial direction to block the flanges from the outside. Or contact with external air at the same time as the fluid such as a pipe, accompanied by heat deformation due to thermal contraction or thermal expansion due to a significant temperature difference between the temperature of the fluid and the outside air, and the gasket is a high temperature of fluid such as a valve or pipe The high pressure and the overhang of the flange acts, resulting in various deformations and damages resulting in deterioration of the sealing properties.
따라서, 본 출원인은 상기와 같은 문제점을 개선하기 위한 방안으로 대한민국 공개특허공보 제10-2013-0067176호(고온고압용 절연가스켓)에 게재된 바와 같은 구조를 갖는 고온고압용 절연가스켓을 개발하여 특허출원한 바 있으며, 상기 고온고압용 절연가스켓은 도 1에 도시된 바와 같이 가스켓의 형상 및 동심원을 유지시키는 센터링(centering)을 하도록 구성된 금속평면외륜(30)과, 상기 금속평면외륜(30)의 내측에 일체형으로 형성되면서 그 상하면에 각각 동심원을 갖는 산과 골이 각각 둥근 철면(凸面)을 이루도록 형성된 톱니형의 요철이 구비되는 제2금속톱니형본체(21)와, 상기 제2금속톱니형본체(21)의 상하면에 각각 접착되는Mica재질의 상하부무기질적층시트(10,11)로 구성되는 것을 특징으로 하는 고온고압용 절연가스켓에 관한 것이나 높은 온도가 적용될 경우 금속부의 열적 변화로 인한 팽창으로 인한 씰링써클(Sealing Circle)이 파손될 위험성이 있다.Accordingly, the present applicant has developed a patent for developing a high temperature and high pressure insulation gasket having a structure as disclosed in the Republic of Korea Patent Publication No. 10-2013-0067176 (high temperature and high pressure insulation gasket) as a way to improve the above problems As applied, the high temperature and high pressure insulating gasket includes a metal flat outer ring 30 configured to center and maintain the shape and concentricity of the gasket as shown in FIG. 1, and the flat outer ring 30 of the metal flat outer ring 30. The second metal toothed body 21 is provided with a tooth-shaped unevenness formed so as to form a rounded convex surface, each of which has a concentric circle on the upper and lower surfaces of the upper body and the lower surface, and the second metal toothed body. The high temperature and high pressure insulating gasket, characterized by consisting of upper and lower inorganic laminated sheets (10, 11) of Mica material respectively adhered to the upper and lower surfaces of (21) or high temperature is applied. If there is, there is a risk of breaking the sealing circle due to expansion due to thermal change of the metal part.
그리고 미국공개특허공보 제2011/0266755호(절연 가스켓, 시스템, 및 제조방법)에 도 2 및 도 3에 도시된 바와 같이 유체 통로의 기능을 하는 유체 배관의 연결부 사이에 사용되는 밀봉 장치에 있어서, 반대측 표면들을 갖고, 유체가 통과하도록 하는 개구부가 형성되어 있는 평면 금속판과, 상기 반대측 표면들 중 적어도 한 표면 위에 배치된 유전체 재료층과, 상기 반대측 표면들 중 적어도 한 표면 위에 형성된 내측 홈과 외측 홈으로서, 이들 중 적어도 하나는 상기 유전체 재료층을 관통하여 상기 금속판으로 들어가도록 형성되며, 이들은 상기 개구부 주위를 완전히 둘러싸고 있으며, 상기 내측 홈 내에 배치되는 1차 씰 부재와, 상기 외측 홈 내에 배치되는 2차 씰 부재 및 압축 리미터를 포함하는 유체 배관의 연결부 사이에 사용되는 밀봉 장치가 게시되어 있지만, 높은 온도가 적용될 경우 금속부의 열적 변화로 인한 팽창으로 인한 씰링써클(Sealing Circle)이 파손될 위험성이 있다. And in US 2011/0266755 (Insulation Gasket, System, and Manufacturing Method), a sealing device used between connections of a fluid pipe functioning as a fluid passage as shown in FIGS. 2 and 3, A planar metal plate having opposing surfaces and formed with openings to allow fluid to pass therethrough, a layer of dielectric material disposed on at least one of the opposing surfaces, and an inner groove and an outer groove formed on at least one of the opposing surfaces At least one of which is formed to penetrate the dielectric material layer and into the metal plate, which is completely enclosed around the opening, the primary seal member disposed in the inner groove, and the two disposed in the outer groove. A sealing device used between the connection of the fluid piping including the primary seal member and the compression limiter is posted However, if a high temperature is applied, there is a risk of breaking the sealing circle due to expansion due to thermal change of the metal part.
본 발명은 상기한 종래기술의 문제를 개선하기 위하여 안출된 것으로, GRE(Glass Reinforced Epox) 소재의 절연지지판이 양면에 부착된 스테인리스 소재 원판과, PTFE(Polytetrafluoroethylene) 소재의 쉘(shell) 내부에 보강스프링이 장착된 구조의 1차 밀봉부재 및 금속제 O링 구조의 2차 밀봉부재가 구비된 구조로서, 고온에서 뛰어난 밀봉성능과 절연성능을 갖는 금속제 O링 장착 고온고압용 절연가스켓을 제공하는 것을 과제로 한다.The present invention has been made to improve the above-described problems of the prior art, a stainless steel original plate attached to both sides of an insulating support plate of Glass Reinforced Epox (GRE) material, and reinforced inside a shell of PTFE (Polytetrafluoroethylene) material It is a structure provided with the primary sealing member of a spring-loaded structure, and the secondary sealing member of a metal O-ring structure, Comprising: It is providing the insulation gasket for metal high temperature and high pressure mounting gaskets which has the outstanding sealing performance and insulation at high temperature. Shall be.
상기의 과제를 달성하기 위한 본 발명은 개구부가 형성되어 있는 평면 환형 금속판과; 상기 평면 환형 금속판의 양측 면에 부착된 유·무기 복합소재의 절연지지판;으로 구성되고, 상기 절연지지판이 부착된 평면 환형 금속판의 양측 면에 내측 홈 및 외측 홈이 각각 형성되고, 상기 내측 홈 내에 배치되는 1차 밀봉부재 및; 상기 외측 홈 내에 배치되는 2차 밀봉부재;가 각각 구비되는 것을 특징으로 하는 금속제 O링 장착 고온고압용 절연가스켓을 과제의 수단으로 한다.The present invention for achieving the above object is a planar annular metal plate and the opening is formed; An insulating support plate of an organic / inorganic composite material attached to both sides of the planar annular metal plate, wherein inner and outer grooves are formed on both side surfaces of the planar annular metal plate to which the insulating support plate is attached, respectively, A primary sealing member disposed; The secondary sealing member disposed in the outer groove; the metal O ring mounting high-temperature high-pressure insulating gasket, characterized in that each is provided as a means of the problem.
그리고, 상기 유·무기 복합소재는 GRE(Glass Reinforced Epoxy) 소재이고, 상기 1차 밀봉부재는 PTFE 소재의 쉘(shell) 내부에 보강스프링이 장착된 구조이며, 상기 2차 밀봉부재는 2차 밀봉부재는 금속제 O링에 형성된 장착 홈 내에 내측 절연지지판에 돌출된 장착돌기가 삽입되는 구조인 것을 특징으로 한다.In addition, the organic-inorganic composite material is GRE (Glass Reinforced Epoxy) material, the primary sealing member is a structure in which a reinforcing spring is mounted inside the shell of the PTFE material, the secondary sealing member is a secondary sealing The member is characterized in that the mounting protrusion protruding from the inner insulating support plate is inserted into the mounting groove formed in the metal O ring.
이상과 같이 구성되는 본 발명은 GRE(Glass Reinforced Epox) 소재의 절연지지판이 양면에 부착된 스테인리스 소재 원판과, PTFE 소재의 쉘(shell) 내부에 보강스프링이 장착된 구조의 1차 밀봉부재 및 금속제 O링 구조의 2차 밀봉부재를 갖는 고온고압용 절연가스켓으로, 1차 밀봉부재에 의해 화재 발생 시 유체 유실로 인한 2차적 피해를 방지하고, 1차 밀봉 부재의 고온에 의한 열적 변형으로 인한 밀봉 파괴의 단점을 보완하기 위하여 금속제 O링 구조의 2차 밀봉부재에 의해 고온에서 밀봉성능과 절연성능을 갖게되므로 밸브 본닛(Valve Bonnet), 관 플랜지(Flange), 열교환기 또는 압력용기 등에 다양한 분야에 널리 적용할 수 있는 장점이 있다.The present invention constituted as described above is made of a primary sealing member and a metal of a structure in which an insulating support plate of glass reinforced epoxy (GRE) material is attached to both sides of a stainless steel disc, and a reinforcing spring is mounted inside a shell of PTFE material. Insulation gasket for high temperature and high pressure with secondary sealing member of O-ring structure, prevents secondary damage caused by fluid loss in case of fire by primary sealing member, and sealing due to thermal deformation by high temperature of primary sealing member In order to make up for the shortcomings of breakdown, the secondary sealing member of the metal O-ring structure has sealing performance and insulation performance at high temperature, so it can be used in various fields such as valve bonnet, pipe flange, heat exchanger or pressure vessel. There is an advantage that can be widely applied.
도 1은 종래의 고온고압용 절연 가스켓의 일부 면을 나타낸 단면도,1 is a cross-sectional view showing a portion of a conventional insulating gasket for high temperature and high pressure;
도 2는 종래의 다른 고온고압용 절연 가스켓을 나타내는 사시도,2 is a perspective view showing another conventional high temperature and high pressure insulating gasket,
도 3은 도 2의 고온고압용 절연 가스켓의 전체 면을 나타낸 단면도,3 is a cross-sectional view showing the entire surface of the insulating gasket for high temperature and high pressure of FIG.
도 4는 도 3의 고온고압용 절연 가스켓 홈 내부에 각각 배치된 1차 및 2차 밀봉부재를 확대하여 나타낸 단면도.4 is an enlarged cross-sectional view of the primary and secondary sealing members respectively disposed in the high temperature and high pressure insulating gasket groove of FIG. 3.
도 5는 본 발명에 따른 고온고압용 절연 가스켓의 전체 면을 나타낸 단면도,5 is a cross-sectional view showing the entire surface of the insulating gasket for high temperature and high pressure according to the present invention;
도 6은 도 5의 A 부분에서 내측 홈 및 외측 홈 내에 밀봉부재가 배치되기 전의 상태를 나타낸 단면도.6 is a cross-sectional view showing a state before the sealing member is disposed in the inner groove and the outer groove in the portion A of FIG.
도 7은 도 5의 A 부분에서 내측 홈 및 외측 홈 내에 밀봉부재가 배치된 상태를 나타낸 단면도.7 is a cross-sectional view illustrating a sealing member disposed in an inner groove and an outer groove in a portion A of FIG. 5;
이하, 본 발명의 바람직한 실시 예를 첨부된 도면에 의거하여 상세히 설명하며, 상세한 설명에서 이 기술의 분야의 종사자들이 용이하게 알 수 있는 구성 및 작용에 대한 언급은 간략히 하거나 생략하였다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and in the detailed description, reference to configurations and operations easily understood by those skilled in the art will be omitted or omitted.
본 발명은 고압의 유체가 사용되는 라인에서 절연이 필요한 개소에사용 가능한 고온고압용 절연가스켓으로 이종 재질의 플랜지가 연결된 구간에 장착되어 전기적 부식을 방지할 수 있고, 절연성이 뛰어난 GRE(Glass Reinforced Epoxy) 소재에 보강스프링이 내입된 PTFE 소재 쉘(shell)의 1차 밀봉부재을 부착하여 낮은 체부압에서도 씰링이 가능하며, 특히 화재 발생 시 화재 진압 시까지의 단시간 동안의 고온에 노출에 의한 밀봉성을 유지할 수 있는 금속제 O링 구조의 2차 밀봉부재를 추가적으로 보완한 것이 특징이다. The present invention is an insulating gasket for high temperature and high pressure that can be used in a place where insulation is required in a line where high pressure fluid is used, and can be installed in a section where flanges of different materials are connected to prevent electrical corrosion, and has excellent insulation GRE It is possible to seal even at low body pressure by attaching the primary sealing member of PTFE shell with reinforcing spring in the material.In particular, it maintains the sealing property by exposure to high temperature for a short time until fire extinguishing in case of fire. It is characterized by an additional supplement to the secondary sealing member of the metal O ring structure.
이하에서는 첨부된 도면을 참조하여 본 발명을 보다 구체적으로 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described the present invention in more detail.
본 발명은 그 일 실시예에 따르면, 도5 및 도6에 도시한 바와 같이 개구부(10)가 형성되어 있는 평면 환형 금속판(20)과 상기 평면 환형 금속판(20)의 양측 면에 부착된 유·무기 복합소재의 절연지지판(30)으로 구성되어 진다.According to one embodiment of the present invention, as shown in FIGS. 5 and 6, the planar annular metal plate 20 having the opening 10 formed therein and oils attached to both sides of the planar annular metal plate 20. It is composed of an insulating support plate 30 of the inorganic composite material.
이때, 평면 환형 금속판(20)은 도5에 도시된 바와 같이 가스켓의 형상 및 동심원을 유지시키는 센터링(centering)을 하도록 구성되어 지며, 높은 압력(Max ASME Class 2500)에서도 사용할 수 있도록 가스켓을 지지하는 역할을 한다.In this case, the planar annular metal plate 20 is configured to center the gasket to maintain the shape and concentricity of the gasket as shown in FIG. 5, and to support the gasket to be used even at high pressure (Max ASME Class 2500). Play a role.
그리고, 상기 평면 환형 금속판(20)의 양측 면에 부착되는 유·무기 복합소재의 절연지지판(30)은 GRE(Glass Reinforced Epoxy) 소재를 사용함으로서, 높은 절연성을 가지며, 과도한 체부로 인한 누설을 방지하며, 외부 유체나 유입물에 의한 간섭 및 변형을 방지하는 작용을 한다.In addition, the insulating support plate 30 of the organic / inorganic composite material attached to both sides of the planar annular metal plate 20 uses GRE (Glass Reinforced Epoxy) material, which has high insulation and prevents leakage due to excessive body parts. It acts to prevent interference and deformation by external fluids or inflows.
본 발명에서 사용하는 GRE(Glass Reinforced Epoxy) 소재는 NEMA(the National Electrical Manufacturers Association, 전미전기제품제조자협회)의 LI-1 G10, G11 소재를 사용하는 것이 바람직하나, 반드시 상기의 제품에만 한정되는 것이 아니고 필요에 따라 적절한 GRE(Glass Reinforced Epoxy) 소재를 선택하여 사용할 수 있다.The GRE (Glass Reinforced Epoxy) material used in the present invention preferably uses LI-1 G10 and G11 materials of the National Electrical Manufacturers Association (NEMA), but is limited to only the above products. In addition, an appropriate GRE (Glass Reinforced Epoxy) material can be selected and used as needed.
또한 상기 절연지지판(30)은 평면 환형 금속판과 플랜지 사이에 위치하면서 플랜지(미도시)의 체부압시 평면 환형 금속판(20)과 플랜지 간의 불완전한 접촉표면을 완벽하게 보완해주는 작용을 하게 되고, 플랜지의 금속경도가 평면 환형 금속판(20)의 금속경도보다 작을 경우 과체부압시 절연지지판(30)에 의한 플랜지의 접촉손상을 차단하도록 구성되어 있다.In addition, the insulating support plate 30 is located between the planar annular metal plate and the flange and serves to completely compensate for the incomplete contact surface between the planar annular metal plate 20 and the flange when the body part pressure of the flange (not shown), the metal of the flange When the hardness is less than the metal hardness of the planar annular metal plate 20 is configured to block the contact damage of the flange by the insulating support plate 30 during overpressure.
그리고 상기 절연지지판(30)이 부착된 평면 환형 금속판은 도 5 내지 도 7에 도시된 바와 같이 밀봉부재들을 배치하기 위해 양측 면에 내측 홈(40) 및 외측 홈(50)을 각각 형성시킨다. In addition, the planar annular metal plate to which the insulating support plate 30 is attached forms inner grooves 40 and outer grooves 50 on both sides thereof to arrange the sealing members, as shown in FIGS. 5 to 7.
본 발명에서 도 6은 도 5의 A 부분에서 내측 홈 및 외측 홈 내에 밀봉부재가 배치되기 전의 상태를 나타낸 단면도이고, 도 7은 도 5의 A 부분에서 내측 홈 및 외측 홈 내에 밀봉부재가 배치된 상태를 나타낸 단면도이다.In the present invention, Figure 6 is a cross-sectional view showing a state before the sealing member is disposed in the inner groove and the outer groove in the portion A of Figure 5, Figure 7 is a sealing member disposed in the inner groove and the outer groove in the portion A of Figure 5 It is sectional drawing which showed state.
상기 내측 홈(40)은 내측 절연지지판(31)이 위치하는 부분에 형성되며, 내측 홈(40) 내에 배치되는 1차 밀봉부재는 PTFE 소재의 쉘(shell)(61) 내부에 보강스프링(62)이 장착된 구조이다. The inner groove 40 is formed at a portion where the inner insulating support plate 31 is positioned, and the primary sealing member disposed in the inner groove 40 is a reinforcing spring 62 inside a shell 61 made of PTFE. ) Is mounted.
상기 1차 밀봉부재는 PTFE(Polytetrafluoroethylene) 소재의 쉘(shell) 내부에 보강스프링링(Stainless Steel)을 장착함으로써 기존 PTFE 제품의 콜드 플로우(Cold Flow) 현상으로 인한 변형을 최소화하며, 사용 시 미세 진동이나 볼트의 이완으로 인한 체부력의 변형에서도 안정적인 밀봉이 가능하다.The primary sealing member is equipped with a reinforcing spring inside a shell made of PTFE (Polytetrafluoroethylene) material to minimize deformation due to the cold flow phenomenon of existing PTFE products, and fine vibration during use. And stable deformation even in deformation of body buoyancy caused by loosening of bolts.
그리고 상기 외측 홈(50)은 내측 절연지지판(31)과 외측 절연지지판(32) 사이에 형성되며, 외측 홈(50) 내에 배치되는 2차 밀봉부재는 화재 발생 시 PTFE 소재의 취약점으로 인한 밀봉(Sealing) 성능 파괴를 보완하기 위한 2차적 밀봉수단으로 도 7에 도시된 바와 같이, 금속제 O링(71)에 형성된 장착 홈(72) 내에 내측 절연지지판(31)에 돌출된 장착돌기(73)가 삽입되는 구조이다.And the outer groove 50 is formed between the inner insulating support plate 31 and the outer insulating support plate 32, the secondary sealing member disposed in the outer groove 50 is sealed due to the weakness of the PTFE material in the event of fire ( As a secondary sealing means for compensating for the breakdown of performance, as shown in FIG. 7, a mounting protrusion 73 protruding from the inner insulating support plate 31 is provided in the mounting groove 72 formed in the metal O-ring 71. It is a structure to be inserted.
따라서, 금속제 O링(71)의 구조에 의해 세레이션(Serration) 가공된 부분은 저체부압에서도 빈틈없는 밀봉을 위해 볼트(Bolt) 하중이 좁은 면적에 집중되게 하며, 금속 본체를 사용하여 콜드 플로우(Cold flow), 과체부, 본체의 파손에 대한 저항이 크며, 또한 본체가 튼튼하여 대형 사이즈(Size) 설치 및 취급 시에도 안정성을 제공하고, 특히 화재 발생 시 금속제 O링(71)의 구조에 의해 고온에서의 밀봉 안정성을 확보할 수 있으며 세라믹 또는 Mica 등과 같은 무기질 소재의 고온 절연 코팅을 이용하여 절연성을 확보하는 작용을 한다.Therefore, the part serrated by the structure of the metal O-ring 71 causes the bolt load to be concentrated in a small area for tight sealing even at a low body pressure, and uses a metal body to provide a cold flow ( Cold flow), resistance to breakage of overbody and main body is large, and the main body is strong to provide stability even in large size installation and handling.In particular, due to the structure of metal O-ring 71 in case of fire It can secure sealing stability at high temperature and works to secure insulation by using high temperature insulating coating of inorganic material such as ceramic or Mica.
본 발명에서 사용하는 금속제 O링(71)의 소재는 고온용 금속 소재로서, 구체적으로는 Stainless Steel 347 또는 Inconel 825 & ETC 중에서 선택하여 사용하는 것이 바람직하다.The material of the metal O ring 71 used in the present invention is a high temperature metal material, and specifically, it is preferable to use stainless steel 347 or Inconel 825 & ETC.
따라서, 본 발명에 따른 금속제 O링 장착 고온고압용 절연가스켓은 상술한 바와 같은 구조에 의해 급격한 열변화에 의한 열수축 또는 열팽창과 같은 급격한 열변형으로 유격이 발생되지 않도록 보완하는 작용을 하며, 특히, 플랜지의 과체부압 또는 열변형에 대한 내구성이 현저히 향상되는 장점이 있고, 대형크기로 제작과 설치사용이 가능한 것이 특징이다.Therefore, the metal O-ring-mounted insulating gasket for high temperature and high pressure according to the present invention has a function to compensate for the occurrence of play due to rapid thermal deformation such as thermal contraction or thermal expansion due to rapid thermal change by the structure as described above. It has the advantage that durability against overpressure and heat deformation of flange is remarkably improved, and it can be manufactured and installed in large size.
참고로 도 7에서 보강스프링 삽입공(63)은 PTFE 소재의 쉘(shell)(61) 내에 보강스프링(62)을 삽입하기 위하여 형성시킨 삽입공이다.For reference, the reinforcement spring insertion hole 63 in FIG. 7 is an insertion hole formed to insert the reinforcement spring 62 in a shell 61 made of PTFE.
상술한 바와 같은, 본 발명에 따른 금속제 O링 장착 고온고압용 절연가스켓을 상술한 바와 같이 설명하였지만, 이는 예를 들어 설명한 것에 불과하며 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 다양한 변화 및 변경이 가능하다는 것을 이 분야의 통상적인 기술자들은 잘 이해할 수 있을 것이다.As described above, the metal O-ring-mounted insulating gasket for high temperature and high pressure according to the present invention has been described as described above, but this is merely described, for example, and various changes and modifications may be made without departing from the technical spirit of the present invention. It will be understood by those skilled in the art that it is possible.
본 발명은 개구부가 형성되어 있는 평면 환형 금속판과; 상기 평면 환형 금속판의 양측 면에 부착된 유·무기 복합소재의 절연지지판;으로 구성되고, 상기 절연지지판이 부착된 평면 환형 금속판은 양측 면에 내측 홈 및 외측 홈이 각각 형성되고, 상기 내측 홈 내에 배치되는 1차 밀봉부재 및; 상기 외측 홈 내에 배치되는 2차 밀봉부재;가 각각 구비되는 것을 특징으로 하는 금속제 O링 장착 고온고압용 절연가스켓을 발명의 실시를 위한 형태로 한다.The present invention is a planar annular metal plate having an opening formed therein; An insulating support plate of an organic / inorganic composite material attached to both sides of the planar annular metal plate, wherein the planar annular metal plate to which the insulating support plate is attached is formed with inner grooves and outer grooves on both sides, respectively, A primary sealing member disposed; Secondary sealing member disposed in the outer groove; The metal O ring mounting high-temperature high-pressure insulating gasket, characterized in that each is provided in the form for the embodiment of the invention.
이때, 상기 유·무기 복합소재는 GRE(Glass Reinforced Epoxy) 소재인 것이 바람직하다.At this time, the organic-inorganic composite material is preferably a glass Reinforced Epoxy (GRE) material.
아울러, 상기 1차 밀봉부재는 PTFE 소재의 쉘(shell) 내부에 보강스프링이 장착된 구조인 것이 바람직하다.In addition, the primary sealing member is preferably a structure in which a reinforcing spring is mounted in a shell of PTFE material.
또한, 상기 2차 밀봉부재는 금속제 O링에 형성된 장착 홈 내에 내측 절연지지판에 돌출된 장착돌기가 삽입되는 구조인 것이 바람직하다.In addition, the secondary sealing member is preferably a structure in which a mounting protrusion protruding from the inner insulating support plate is inserted into the mounting groove formed in the metal O ring.
본 발명은 GRE(Glass Reinforced Epox) 소재의 절연지지판이 양면에 부착된 스테인리스 소재 원판과, PTFE 소재의 쉘(shell) 내부에 보강스프링이 장착된 구조의 1차 밀봉부재 및 금속제 O링 구조의 2차 밀봉부재를 갖는 고온고압용 절연가스켓으로, 1차 밀봉부재에 의해 화재 발생 시 유체 유실로 인한 2차적 피해를 방지하고, 1차 밀봉 부재의 고온에 의한 열적 변형으로 인한 밀봉 파괴의 단점을 보완하기 위하여 금속제 O링 구조의 2차 밀봉부재에 의해 고온에서 밀봉성능과 절연성능을 갖게되므로 밸브 본닛(Valve Bonnet), 관 플랜지(Flange), 열교환기 또는 압력용기 등에 다양한 분야에 널리 적용할 수 있는 등 산업상 널리 이용될 것으로 기대된다.The present invention is a stainless steel original plate with an insulating support plate made of Glass Reinforced Epox (GRE), and a primary sealing member and a metal O-ring structure having a structure in which a reinforcing spring is mounted inside a shell made of PTFE. Insulation gasket for high temperature and high pressure with primary sealing member prevents secondary damage due to fluid loss in case of fire caused by primary sealing member and compensates for the disadvantages of breaking seal due to thermal deformation caused by high temperature of primary sealing member. In order to have sealing performance and insulation at high temperature by the secondary sealing member of metal O-ring structure, it can be widely applied to various fields such as valve bonnet, pipe flange, heat exchanger or pressure vessel. It is expected to be widely used in the industry.

Claims (4)

  1. 개구부가 형성되어 있는 평면 환형 금속판과;A planar annular metal plate having an opening formed therein;
    상기 평면 환형 금속판의 양측 면에 부착된 유·무기 복합소재의 절연지지판;으로 구성되고,An insulating support plate of an organic / inorganic composite material attached to both sides of the planar annular metal plate;
    상기 절연지지판이 부착된 평면 환형 금속판은 양측 면에 내측 홈 및 외측 홈이 각각 형성되고,The planar annular metal plate to which the insulating support plate is attached has inner and outer grooves formed on both sides thereof, respectively.
    상기 내측 홈 내에 배치되는 1차 밀봉부재 및;A primary sealing member disposed in the inner groove;
    상기 외측 홈 내에 배치되는 2차 밀봉부재;A secondary sealing member disposed in the outer groove;
    가 각각 구비되는 것을 특징으로 하는 금속제 O링 장착 고온고압용 절연가스켓.Insulation gasket for metal O ring mounting high temperature and high pressure, characterized in that each provided.
  2. 제 1항에 있어서,The method of claim 1,
    상기 유·무기 복합소재는 GRE(Glass Reinforced Epoxy) 소재인 것을 특징으로 하는 금속제 O링 장착 고온고압용 절연가스켓.The organic-inorganic composite material is a metal O-ring high-temperature high-pressure insulation gasket, characterized in that the GRE (Glass Reinforced Epoxy) material.
  3. 제 1항에 있어서,The method of claim 1,
    상기 1차 밀봉부재는 PTFE 소재의 쉘(shell) 내부에 보강스프링이 장착된 구조인 것을 특징으로 하는 금속제 O링 장착 고온고압용 절연가스켓.The primary sealing member is a metal O-ring insulated gasket for high temperature and high pressure, characterized in that the reinforcing spring is mounted inside the shell of the PTFE material (shell).
  4. 제 1항에 있어서,The method of claim 1,
    상기 2차 밀봉부재는 금속제 O링에 형성된 장착 홈 내에 내측 절연지지판에 돌출된 장착돌기가 삽입되는 구조인 것을 특징으로 하는 금속제 O링 장착 고온고압용 절연가스켓.The secondary sealing member is a metal O ring mounting high-temperature insulating pressure gasket, characterized in that the mounting projection protruding to the inner insulating support plate is inserted into the mounting groove formed in the metal O ring.
PCT/KR2013/011546 2013-10-30 2013-12-12 Insulation gasket provided with metal o-ring for high-temperature and high-pressure conditions WO2015064825A1 (en)

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