JP2019019834A - gasket - Google Patents

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Publication number
JP2019019834A
JP2019019834A JP2017135763A JP2017135763A JP2019019834A JP 2019019834 A JP2019019834 A JP 2019019834A JP 2017135763 A JP2017135763 A JP 2017135763A JP 2017135763 A JP2017135763 A JP 2017135763A JP 2019019834 A JP2019019834 A JP 2019019834A
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JP
Japan
Prior art keywords
gasket
tube member
conduit
container valve
annular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2017135763A
Other languages
Japanese (ja)
Inventor
中島　秀敏
Hidetoshi Nakajima
秀敏 中島
山本　康平
Kohei Yamamoto
康平 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primet Japan Co Ltd
Pureron Japan Co Ltd
Original Assignee
Primet Japan Co Ltd
Pureron Japan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Primet Japan Co Ltd, Pureron Japan Co Ltd filed Critical Primet Japan Co Ltd
Priority to JP2017135763A priority Critical patent/JP2019019834A/en
Priority to TW107120907A priority patent/TW201908625A/en
Priority to KR1020180072212A priority patent/KR20190006904A/en
Priority to CN201810755430.2A priority patent/CN109237160A/en
Publication of JP2019019834A publication Critical patent/JP2019019834A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
    • F16L27/0824—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings
    • F16L27/0832—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation with ball or roller bearings having axial bearings
    • 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
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • 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
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/06—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • 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
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0818—Flat gaskets
    • F16J2015/085—Flat gaskets without fold over
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/935—Seal made of a particular material
    • Y10S277/939—Containing metal

Abstract

To provide a gasket that prevents deformation at a seal surface of a container valve or seal surface of a conduit tube.SOLUTION: A gasket 1 is constituted of a metal ring-shaped flat plate 24 with hardness equal to or more than that of a member of which a ferrule for a conduit tube of a container valve and a conduit tube are formed, and includes a plurality of annular beads 27 with a flat part 26 at the vertex thereof, at a surface abutting on the ferrule for the conduit tube of the container valve or the conduit tube.SELECTED DRAWING: Figure 2

Description

本発明は、ガスケットに関する。   The present invention relates to a gasket.

従来、圧力容器の容器弁と導管とを接続する管継手において、該容器弁のシール面と該導管のシール面との間にはガスのリークを防止するためにガスケットが配設されている。前記ガスケットとして、ポリテトラフルオロエチレン（ＰＴＦＥ）、ポリクロロトリフルオロエチレン（ＰＣＴＦＥ）等の樹脂からなるものを用いると、ガスが樹脂に浸透することによる透過リークや、樹脂のクリープ変形によるリーク等が生じるという問題がある。   Conventionally, in a pipe joint that connects a container valve of a pressure vessel and a conduit, a gasket is disposed between the seal surface of the container valve and the seal surface of the conduit to prevent gas leakage. If the gasket is made of a resin such as polytetrafluoroethylene (PTFE) or polychlorotrifluoroethylene (PCTFE), a permeation leak caused by gas permeating into the resin, a leak caused by creep deformation of the resin, etc. There is a problem that arises.

そこで、前記問題を解決するために、金属製のガスケットが提案されており、例えば、表面に断面が円弧状である複数の円環状ビードを備えるものが知られている（例えば、特許文献１参照）。前記複数の円環状ビードを備える金属製のガスケットによれば、該円環状ビードが前記容器弁のシール面と該導管のシール面とに当接されることにより、該容器弁と該導管との間を確実にシールできるとされている。   In order to solve the above problem, a metal gasket has been proposed. For example, a gasket having a plurality of annular beads having a circular cross section on the surface is known (see, for example, Patent Document 1). ). According to the metal gasket including the plurality of annular beads, the annular bead is brought into contact with the sealing surface of the container valve and the sealing surface of the conduit, whereby the container valve and the conduit are connected to each other. It is said that the gap can be reliably sealed.

特開２００８−４５７３０号公報JP 2008-45730 A

しかしながら、特許文献１記載のガスケットでは、断面円弧状のビードが円弧の頂点で前記容器弁のシール面又は前記導管のシール面に当接されるので、接触面圧が過剰になると該容器弁のシール面又は該導管のシール面に変形を生じ、リークの原因になるという不都合がある。   However, in the gasket described in Patent Document 1, since the bead having an arc-shaped cross section is brought into contact with the seal surface of the container valve or the seal surface of the conduit at the top of the arc, if the contact surface pressure becomes excessive, the container valve There is a disadvantage in that the sealing surface or the sealing surface of the conduit is deformed and causes a leak.

本発明は、かかる不都合を解消して、前記容器弁のシール面又は前記導管のシール面に変形を生じさせることのないガスケットを提供することを目的とする。   An object of the present invention is to provide a gasket that eliminates such inconvenience and does not cause deformation of the sealing surface of the container valve or the sealing surface of the conduit.

かかる目的を達成するために、本発明のガスケットは、第１の管部材と第２の管部材との間に配設されてガスのリークを防止するガスケットにおいて、第１の管部材及び第２の管部材以上の硬度を備える金属製のリング状平板からなり、第１の管部材又は第２の管部材に当接する面に、頂点に平坦部を備える複数の環状ビードを備えることを特徴とする。   In order to achieve such an object, the gasket of the present invention is a gasket that is disposed between the first tube member and the second tube member to prevent gas leakage. It is made of a metal ring-shaped flat plate having a hardness equal to or higher than that of the tube member, and has a plurality of annular beads having flat portions at the apexes on the surface that contacts the first tube member or the second tube member. To do.

本発明のガスケットは、例えば、圧力容器の容器弁等の第１の管部材と、該容器弁に接続される導管等の第２の管部材との間に配設される。このとき、本発明のガスケットは、第１の管部材及び第２の管部材以上の硬度を備える金属からなることにより、優れた耐焼き付き性及び、優れた耐蝕性を得ることができる。   The gasket of the present invention is disposed, for example, between a first pipe member such as a container valve of a pressure vessel and a second pipe member such as a conduit connected to the container valve. At this time, the gasket of the present invention is made of a metal having a hardness higher than that of the first tube member and the second tube member, so that excellent seizure resistance and excellent corrosion resistance can be obtained.

また、本発明のガスケットは、第１の管部材又は第２の管部材に当接する面に、複数の環状ビードを備えることにより両管部材間を確実にシールすることができ、該環状ビードの頂点に平坦部を備えることにより第１の管部材又は第２の管部材に対する接触面圧の集中を防止して、該第１の管部材のシール面又は該第２の管部材のシール面に変形を生じさせることを防止することができる。   Moreover, the gasket of this invention can seal between both pipe members reliably by providing a some annular bead in the surface contact | abutted to a 1st pipe member or a 2nd pipe member, By providing a flat portion at the apex, concentration of contact surface pressure on the first tube member or the second tube member is prevented, and the seal surface of the first tube member or the seal surface of the second tube member is prevented. It is possible to prevent the deformation.

本発明のガスケットに使用できる金属としては、例えば、純ニッケル又はステンレスを挙げることができる。   Examples of the metal that can be used in the gasket of the present invention include pure nickel and stainless steel.

また、本発明のガスケットにおいて、前記環状ビードは、表面にポリテトラフルオロエチレンからなるコーティング層又はポリテトラフルオロエチレン粒子が分散している無電解ニッケルメッキ層を備えることが好ましい。本発明のガスケットは、前記環状ビードが前記コーティング層又は前記無電解ニッケルメッキ層を備えることにより、シールに必要な軸力を低減でき、より優れた耐焼き付き性を得ることができる。   In the gasket of the present invention, the annular bead preferably includes a coating layer made of polytetrafluoroethylene or an electroless nickel plating layer in which polytetrafluoroethylene particles are dispersed on the surface. In the gasket of the present invention, when the annular bead includes the coating layer or the electroless nickel plating layer, it is possible to reduce the axial force required for sealing and to obtain better seizure resistance.

本発明のガスケットを用いる管継手の構成を示す説明的断面図。Explanatory sectional drawing which shows the structure of the pipe joint using the gasket of this invention. 本発明のガスケットの構成を示す説明的断面図。Explanatory sectional drawing which shows the structure of the gasket of this invention.

次に、添付の図面を参照しながら本発明の実施の形態についてさらに詳しく説明する。   Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

本発明のガスケット１は、例えば図１に示す管継手２に用いることができる。   The gasket 1 of this invention can be used for the pipe joint 2 shown, for example in FIG.

管継手２はガスボンベ等の圧力容器（図示せず）に用いられるユニオン継手であり、第１の管部材としての容器弁１１の導管用口金１２と、導管用口金１２に接続される第２の管部材としての導管１３と、袋ナット１４により構成されている。容器弁１１及び導管１３は、例えば、ステンレスにより形成されている。   The pipe joint 2 is a union joint used for a pressure vessel (not shown) such as a gas cylinder. The pipe joint 2 of the container valve 11 as the first pipe member and the second pipe connected to the pipe base 12 are used. It consists of a conduit 13 as a pipe member and a cap nut 14. The container valve 11 and the conduit 13 are made of stainless steel, for example.

容器弁１１は、導管用口金１２の軸と直交する軸を有する容器用口金１５と、容器用口金１５と同軸に設けられた弁操作用ハンドル１６とを備え、弁操作用ハンドル１６を回動して導管用口金１２と容器用口金１５とを接続することにより開弁し、導管用口金１２と容器用口金１５とを遮断することにより閉弁される。   The container valve 11 includes a container base 15 having an axis orthogonal to the axis of the conduit base 12 and a valve operation handle 16 provided coaxially with the container base 15, and the valve operation handle 16 is rotated. Then, the valve is opened by connecting the conduit base 12 and the container base 15, and is closed by shutting off the conduit base 12 and the container base 15.

導管１３は、先端に導管用口金１２内に挿入されるニップル部１７を備え、ニップル部１７には外周方向に延在する環状フランジ１８が形成されている。袋ナット１４は、導管１３に外挿されて袋状部１９が環状フランジ１８の導管用口金１２と反対側の面にベアリング２０を介して当接される一方、開口部２１の内周面に形成された雌ねじ部２２により、導管用口金１２の外周面に形成された雄ねじ部２３に螺着される。   The conduit 13 includes a nipple portion 17 that is inserted into the conduit cap 12 at the tip, and the nipple portion 17 is formed with an annular flange 18 that extends in the outer peripheral direction. The cap nut 14 is extrapolated to the conduit 13, and the bag-shaped portion 19 is brought into contact with the surface of the annular flange 18 on the opposite side of the conduit cap 12 via the bearing 20, while the inner peripheral surface of the opening 21. The formed female screw portion 22 is screwed onto the male screw portion 23 formed on the outer peripheral surface of the conduit base 12.

管継手２において、ガスケット１は、導管用口金１２の先端面と、環状フランジ１８の導管用口金１２側の面との間に配設されており、袋ナット１４により締め付けられる。   In the pipe joint 2, the gasket 1 is disposed between the distal end surface of the conduit base 12 and the surface of the annular flange 18 on the conduit base 12 side, and is tightened by the cap nut 14.

ガスケット１は、図２に示すように、リング状の平板状体２４からなり、中央に導管１３のニップル部１７が挿入される孔部２５を備えている。また、平板状体２４の表裏両面には、頂点に平坦部２６を備える複数の環状ビード２７が形成されており、環状ビード２７，２７間には環状溝部２８が形成されている。   As shown in FIG. 2, the gasket 1 is formed of a ring-shaped flat plate body 24 and includes a hole portion 25 into which the nipple portion 17 of the conduit 13 is inserted at the center. A plurality of annular beads 27 having flat portions 26 at the apexes are formed on both front and back surfaces of the flat plate-like body 24, and an annular groove portion 28 is formed between the annular beads 27 and 27.

ガスケット１によれば、管継手２に用いられて、容器弁１１の導管用口金１２と、導管１３の環状フランジ１８との間に配設され、袋ナット１４により締め付けられたときに、複数の環状ビード２７を介して導管用口金１２の先端面及び環状フランジ１８に当接するので、導管用口金１２と環状フランジ１８との間を確実にシールすることができる。また、ガスケット１は、環状ビード２７の頂点に平坦部２６を備えるので、導管用口金１２の先端面及び環状フランジ１８に対する接触面圧の集中を防止して、導管用口金１２の先端面及び環状フランジ１８に変形を生じさせることを防止することができる。   According to the gasket 1, it is used for the pipe joint 2 and is disposed between the pipe cap 12 of the container valve 11 and the annular flange 18 of the pipe 13, and is tightened by the cap nut 14. Since the front end surface of the conduit cap 12 and the annular flange 18 are brought into contact with each other via the annular bead 27, the space between the conduit cap 12 and the annular flange 18 can be reliably sealed. Further, since the gasket 1 includes the flat portion 26 at the apex of the annular bead 27, concentration of contact surface pressure on the distal end surface of the conduit base 12 and the annular flange 18 is prevented, and the distal end surface and the annular surface of the conduit base 12 are prevented. It is possible to prevent the flange 18 from being deformed.

ガスケット１は、容器弁１１及び導管１３を形成するステンレス以上の硬度を有する金属製であり、例えば、純ニッケル又はステンレスにより形成することができる。また、ガスケット１は、環状ビード２７の表面にポリテトラフルオロエチレンからなるコーティング層又はポリテトラフルオロエチレン粒子が分散している無電解ニッケルメッキ層を備えていてもよい。前記コーティング層又は前記無電解ニッケルメッキ層は、それ自体公知の方法により形成することができ、該コーティング層は例えば１０〜５０μｍの厚さとすることができ、該無電解ニッケルメッキ層は例えば５〜１０μｍの厚さとすることができる。   The gasket 1 is made of a metal having a hardness equal to or higher than that of the stainless steel that forms the container valve 11 and the conduit 13, and can be formed of, for example, pure nickel or stainless steel. Further, the gasket 1 may include a coating layer made of polytetrafluoroethylene or an electroless nickel plating layer in which polytetrafluoroethylene particles are dispersed on the surface of the annular bead 27. The coating layer or the electroless nickel plating layer can be formed by a method known per se, and the coating layer can have a thickness of, for example, 10 to 50 μm. The thickness can be 10 μm.

１…ガスケット、 １１…容器弁（第１の管部材）、 １３…導管（第２の管部材）、 ２４…リング状平板、 ２６…平坦部、 ２７…環状ビード。   DESCRIPTION OF SYMBOLS 1 ... Gasket, 11 ... Container valve (1st pipe member), 13 ... Conduit (2nd pipe member), 24 ... Ring-shaped flat plate, 26 ... Flat part, 27 ... Ring bead.

Claims (3)

第１の管部材と第２の管部材との間に配設されてガスのリークを防止するガスケットにおいて、
第１の管部材及び第２の管部材以上の硬度を備える金属製のリング状平板からなり、
第１の管部材又は第２の管部材に当接する面に、頂点に平坦部を備える複数の環状ビードを備えることを特徴とするガスケット。 In the gasket disposed between the first tube member and the second tube member to prevent gas leakage,
It consists of a metal ring-shaped flat plate having a hardness equal to or higher than that of the first tube member and the second tube member,
A gasket comprising: a plurality of annular beads each having a flat portion at a vertex on a surface contacting the first tube member or the second tube member. 請求項１記載のガスケットにおいて、純ニッケル又はステンレスからなることを特徴とするガスケット。   The gasket according to claim 1, wherein the gasket is made of pure nickel or stainless steel. 請求項１又は請求項２記載のガスケットにおいて、前記環状ビードは表面にポリテトラフルオロエチレンからなるコーティング層又はポリテトラフルオロエチレン粒子が分散している無電解ニッケルメッキ層を備えることを特徴とするガスケット。   3. The gasket according to claim 1, wherein the annular bead includes a coating layer made of polytetrafluoroethylene or an electroless nickel plating layer in which polytetrafluoroethylene particles are dispersed. .
JP2017135763A 2017-07-11 2017-07-11 gasket Pending JP2019019834A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2017135763A JP2019019834A (en) 2017-07-11 2017-07-11 gasket
TW107120907A TW201908625A (en) 2017-07-11 2018-06-19 Gasket
KR1020180072212A KR20190006904A (en) 2017-07-11 2018-06-22 Gasket
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