JP2020067172A - Valve member and fluid conduit device equipped with valve member - Google Patents

Valve member and fluid conduit device equipped with valve member Download PDF

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JP2020067172A
JP2020067172A JP2018202009A JP2018202009A JP2020067172A JP 2020067172 A JP2020067172 A JP 2020067172A JP 2018202009 A JP2018202009 A JP 2018202009A JP 2018202009 A JP2018202009 A JP 2018202009A JP 2020067172 A JP2020067172 A JP 2020067172A
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valve member
pipe
conduit
fluid
closed position
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JP2020067172A5 (en
JP7137205B2 (en
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悟 小柳
Satoru Koyanagi
悟 小柳
由美子 大津
Yumiko Otsu
由美子 大津
孝 青柳
Takashi Aoyagi
孝 青柳
小林　弘明
Hiroaki Kobayashi
弘明 小林
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TOKI ENGINEERING KK
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TOKI ENGINEERING KK
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    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Abstract

To provide a valve member capable of properly and repeatedly opening/closing a channel device handing a fluid under super high pressure or under extremely low temperature.SOLUTION: A valve member (20) is configured to displace a conduit (18) in a longitudinal axial direction of the conduit between an open position and a close position, and is equipped with a valve member body (22) and an annular sealing portion (24) provided on a peripheral edge of the valve member body and having flexibility. The sealing portion is pressed against a sealing surface portion (18b) on a peripheral wall surface of the conduit by receiving pressure of a fluid in the conduit, when the valve member is at the close position. The fluid conduit device (10) has the valve member and a pipe member (16). When handling a fluid under super high pressure or under extremely low temperature, preferably, all of the valve member and the pipe member are made from metal such as stainless.SELECTED DRAWING: Figure 1

Description

本発明は、流体圧を利用してより確実に管路を閉止可能とすることを可能にする弁部材およびその弁部材を用いた管継手などの流体管路装置に関し、特に、使用による劣化を少なくするためにゴムや樹脂などの材料を用いずに管路の確実な閉止を可能とするのに適した弁部材及び流体管路装置に関する。   TECHNICAL FIELD The present invention relates to a valve member and a fluid conduit device such as a pipe joint using the valve member, which makes it possible to more reliably close a conduit by utilizing fluid pressure, and particularly The present invention relates to a valve member and a fluid conduit device suitable for enabling reliable closure of a conduit without using a material such as rubber or resin to reduce the amount.

流体を扱う流体管路装置では、相互に連結されて管路を形成する管部材間の確実な密封、管継手のように管路が開閉される流体管路装置での管路閉止状態における確実な密封が重要である。このような密封を行うためには、従来からゴムや合成樹脂などを用いたシール材、弁部材が多く用いられてきた。   In a fluid conduit device that handles fluids, reliable sealing between pipe members that are connected to each other to form a conduit, and reliable in a pipeline closed state in a fluid conduit device in which the conduit is opened and closed like a pipe joint. Good sealing is important. In order to perform such sealing, a sealing material and a valve member made of rubber or synthetic resin have been widely used conventionally.

しかし近年ではこのようなゴムや合成樹脂などの従来からの材料を用いたものでは適切な密封ができないような流体を扱う流体管路装置が出てきている。例えば、ロケット燃料として用いられる液体水素は零下２５３℃以下での取り扱いが求められ、また、水素自動車で燃料として用いられる水素ガスは３０ＭＰａまたは７０ＭＰａの超高圧での取り扱いが求められる。   However, in recent years, there has been developed a fluid conduit device that handles a fluid that cannot be properly sealed with a conventional material such as rubber or synthetic resin. For example, liquid hydrogen used as rocket fuel is required to be handled at 253 ° C. or lower below zero, and hydrogen gas used as fuel in a hydrogen automobile is required to be handled at ultrahigh pressure of 30 MPa or 70 MPa.

これに対してゴムや樹脂などを用いない流体管路装置が開発なされている（例えば、特許文献１〜５参照）。これらは主にメタルシールに関するものである。   On the other hand, fluid conduit devices that do not use rubber or resin have been developed (see, for example, Patent Documents 1 to 5). These are mainly related to metal seals.

特開２００２−３６４７５０JP 2002-364750 A 特開２００８−３０３８９４Japanese Patent Laid-Open No. 2008-303894 特開平３−１１３１７６JP-A-3-113176 特許第５８４２２８５Patent No. 5842285 ＷＯ２０１５０７５９９６Ａ１WO2015075996A1

本発明は、常温における液体や気体を扱う流体管路装置にも用いることができるが、上述のような液体水素や水素ガスの他、液体窒素、液体酸素、ＬＮＧガス（液化天然ガス）などの超高圧下や極低温下の流体を扱う流路装置の開閉を適切に且つ繰り返し行うことを可能とする弁部材及びそれを用いた管継手などに流体管路装置を提供することを目的としている。   INDUSTRIAL APPLICABILITY The present invention can be used in a fluid pipeline device that handles liquids and gases at room temperature, but in addition to liquid hydrogen and hydrogen gas as described above, liquid nitrogen, liquid oxygen, LNG gas (liquefied natural gas), etc. It is an object of the present invention to provide a fluid conduit device such as a valve member and a pipe joint using the valve member that can appropriately and repeatedly open and close a passage device that handles fluid under ultra-high pressure or cryogenic temperature. .

すなわち、本発明は、
管路内に設定されて該管路を開放する開位置と該管路を閉止する閉位置との間で該管路の長手軸線方向で変位するようにされた弁部材であって、
弁部材本体と、
該弁部材本体の周縁に設けられた可撓性を有する環状の密封部を備え、
該密封部が、該弁部材が該閉位置にあるときに該管路の周壁面に係合して該管路を閉止し、該管路内の流体の圧力を受けて該管路の周壁面に押圧されるようになされた弁部材を提供する。 That is, the present invention is
A valve member, which is set in the pipeline and is configured to be displaced in a longitudinal axis direction of the pipeline between an open position for opening the pipeline and a closed position for closing the pipeline,
A valve member body,
A ring-shaped sealing portion having flexibility provided on the periphery of the valve member main body,
The sealing portion closes the pipeline by engaging with the peripheral wall surface of the pipeline when the valve member is in the closed position, and receives the pressure of the fluid in the pipeline to surround the pipeline. Provided is a valve member adapted to be pressed against a wall surface.

この弁部材では、管路内をその長手軸線方向で開位置から閉位置に変位されたときに、該密封部が該管路の該周壁面に係合し、該管路内の流体の圧力により該密封部が該周壁面に押圧されるようにしているために当該管路の閉止をより確実に行うことを可能とする。   In this valve member, when the inside of the pipe is displaced from the open position to the closed position in the longitudinal axis direction, the sealing portion engages with the peripheral wall surface of the pipe, and the pressure of the fluid in the pipe is Thus, since the sealing portion is pressed against the peripheral wall surface, it is possible to more reliably close the pipeline.

具体的には、
該密封部が該弁部材本体の該周縁に隣接する環状の基端部分から径方向外側の環状の先端部分に延びるに従い先細りとなる断面を有し、該先端部分が該管路の該周壁面に係合し該管路内の流体の圧力を受けて押圧されるようにすることができる。これは、先細りとすることにより管路内の流体の圧力による密封部の管路の周壁面への押圧を効率的に行えるようにしようとするものである。 In particular,
The sealing portion has a cross section that tapers as it extends from the annular base end portion adjacent to the peripheral edge of the valve member main body to the annular outer end portion in the radial direction, and the distal end portion is the peripheral wall surface of the conduit. To be pressed by receiving the pressure of the fluid in the conduit. This is to make it possible to efficiently press the sealing portion against the peripheral wall surface of the pipeline by the pressure of the fluid in the pipeline by tapering.

より具体的には、該密封部が該基端部分から該先端部分に向かうに従い該閉位置から該開位置に向かう方向に傾斜しており、該密封部の外周面が円錐形状とされるようにすることができる。これは、管路の周壁面が密封部の外周面に対応して円錐形状にされた密封面部（弁座部）を有する場合に、その密封面部に当該弁部材の密封部が効率的に密封係合することを可能にするためのものである。   More specifically, the sealing portion is inclined in a direction from the closed position to the open position as it goes from the base end portion to the tip end portion, and the outer peripheral surface of the sealing portion has a conical shape. Can be This is because when the peripheral wall surface of the conduit has a conical sealing surface portion (valve seat portion) corresponding to the outer peripheral surface of the sealing portion, the sealing portion of the valve member efficiently seals the sealing surface portion. It is for enabling the engagement.

上記の弁部材は金属からなるようにすることができる。金属製とすることにより、上述の極低温や超高圧の流体に対しても耐久性をもって密封閉止することが可能とするものである。   The valve member may be made of metal. By using a metal, it is possible to hermetically seal and close the above-mentioned extremely low temperature and ultra high pressure fluids.

本発明はまた、
管路を有する管部材と、
該管路内に設定されて該管路を開放する該開位置と該管路を閉止する該閉位置との間を該管路の長手軸線方向で変位するようにされた上述のいずれかの弁部材と、
を有する流体管路装置を提供する。 The present invention also provides
A pipe member having a pipe line,
Any one of the above, set in the conduit to displace in the longitudinal axis direction of the conduit between the open position for opening the conduit and the closed position for closing the conduit. A valve member,
There is provided a fluid line device having:

具体的には、
該管部材内に設けられて該弁部材を該開位置から該閉位置に付勢する付勢部材を有し、
該管部材は、該管路を画定する周壁面が、該弁部材が該管路内の流体圧を受けずに該付勢手段により該閉位置にされた状態において、該弁部材の該密封部と係合する密封面部を有し、
該管部材は、該閉位置にされた該弁部材が該弁部材によって閉止された該管路内の流体圧により該閉位置から変位されるのを阻止する係止部を更に有するようにすることができる。 In particular,
A biasing member provided in the pipe member for biasing the valve member from the open position to the closed position;
The pipe member seals the valve member when the peripheral wall surface defining the pipe line is in the closed position by the biasing means without receiving the fluid pressure in the pipe line. A sealing surface portion that engages the portion,
The tube member further comprises a locking portion that prevents the valve member in the closed position from being displaced from the closed position by fluid pressure in the conduit closed by the valve member. be able to.

該弁部材を該閉位置に留めて該密封部が該管路内の流体圧により該密封面部に押圧されるようにするものである。   The valve member is kept in the closed position so that the sealing portion is pressed against the sealing surface portion by the fluid pressure in the conduit.

より具体的には、該弁部材の該密封部は該弁部材本体の該周縁に隣接する環状の基端部分と、径方向外側の環状の先端部分とを有しており、該基端部分から該先端部分に向かう従い該閉位置から該開位置に向かう方向に傾斜して、該密封部の外周面が円錐形状とされており、該周壁面の該密封面部は該外周面に対応するように円錐形状とされており、該密封面部の該円錐形状をなす角度は、該弁部材が該管路内の流体圧を受けずに該付勢手段により該閉位置にされた状態において、該外周面が該先端部分において該密封面部に係合し、該先端部分から該基端部分においては隙間が生じるような角度となるようにすることができる。閉止された該管路内の流体圧がかけられたときに該先端部分が確実に該密封係合面に押し付けられるようにするものである。   More specifically, the sealing portion of the valve member has an annular base end portion adjacent to the peripheral edge of the valve member main body and an annular tip end portion on the radially outer side. From the closed position to the open position, the outer peripheral surface of the sealing portion has a conical shape, and the sealing surface portion of the peripheral wall surface corresponds to the outer peripheral surface. And the angle of the conical surface of the sealing surface is such that the valve member is in the closed position by the biasing means without receiving the fluid pressure in the conduit. It is possible that the outer peripheral surface engages with the sealing surface portion at the distal end portion, and the angle is such that a gap is generated from the distal end portion to the proximal end portion. The tip portion is surely pressed against the sealing engagement surface when the fluid pressure in the closed pipeline is applied.

上記流体管路装置は、該管部材が該管路の一端の連結用開口と、該連結用開口に隣接して該管路内に設けられた弁部材支持部とを有し、該弁部材が、該弁部材支持部より内側の該管路内に配置され、該弁部材本体から該連結用開口の方向に延びて該弁部材支持部に該長手軸線方向で貫通するように設けられた弁部材支持孔内に摺動可能に通された支持ガイド部を有するようにして当該流体管路装置を管継手部材として構成し、
該支持ガイド部は、当該管継手部材に連結される対応する管継手部材と連結されたときに、該対応する管継手部材によって押し込まれて、該弁部材が該閉位置から該開位置に向けて変位されるようにすることができる。 In the fluid conduit device, the pipe member has a connecting opening at one end of the conduit, and a valve member support portion provided in the conduit adjacent to the connecting opening. Is disposed inside the pipe line inside the valve member support portion, is provided so as to extend from the valve member main body in the direction of the connection opening, and penetrate the valve member support portion in the longitudinal axis direction. The fluid conduit device is configured as a pipe joint member by having a support guide portion slidably passed through the valve member support hole,
The support guide portion is pushed by the corresponding pipe joint member when connected to the corresponding pipe joint member connected to the pipe joint member, and the valve member is directed from the closed position to the open position. Can be displaced.

該弁部材支持部は、該閉位置とされた該弁部材が該弁部材によって閉じられた該管路内の流体圧によって該連結用開口に向けて押圧されたときに該弁部材本体と係合して該弁部材が該閉位置から変位するのを阻止するようにされる。弁部材を閉位置から変位するのを阻止することにより、弁部材が閉止した管路内の流体の圧力を確実に受けて密封部が管路の周壁面の密封面に確実に押圧されるようにするものである。閉位置とは、弁部材がそのような流体の圧力を確実に受けるようにする位置であり、開位置から閉位置に向かって変位した弁部材の密封部が密封面部に最初に係合した位置だけでなく、密封部と密封面部との係合関係が保たれて当該弁部材が係止部材に係合するまでの位置をも含むものとする。   The valve member support portion engages with the valve member main body when the valve member in the closed position is pressed toward the connecting opening by the fluid pressure in the conduit closed by the valve member. Together, they prevent the valve member from displacing from the closed position. By preventing the valve member from displacing from the closed position, the pressure of the fluid in the closed pipe is surely received and the sealing portion is surely pressed against the sealing surface of the peripheral wall surface of the pipe. It is something to do. The closed position is a position that ensures that the valve member receives such fluid pressure, and is the position at which the sealing portion of the valve member displaced from the open position toward the closed position first engages the sealing surface portion. Not only this, but also includes the position where the engagement relationship between the sealing portion and the sealing surface portion is maintained and the valve member engages with the locking member.

また、該管部材は、該開位置にある該弁部材よりも該管路の内側位置に設けられ、該連結用開口から離れる方向で該開位置から変位される該弁部材に係合して該弁部材の更なる変位を阻止する変位阻止部材を有すようにすることができる。   Further, the pipe member is provided at a position inside the pipe line with respect to the valve member in the open position, and engages with the valve member displaced from the open position in a direction away from the connection opening. A displacement blocking member may be provided to prevent further displacement of the valve member.

上述の流体管路装置では、該管部材が、相互に連結されて該管路を画定する少なくとも２つの管エレメントを有し、該少なくとも２つの管エレメントの一方が他方を部分的に受け入れて連結されるようになされており、該一方の内周面には雌ネジ部が、他方の外周面には該雌ネジ部にねじ係合される雄ネジ部が設けられており、該内周面及び該外周面の一方には該管エレメントの長手軸線方向で傾斜の付けられた環状傾斜面が、他方には該雄ネジ部が該雌ネジ部にねじ込まれたときに該環状傾斜面に該長手軸線方向で押圧されて該環状面に密封係合される環状角部が設けられるようにすることができる。環状傾斜面に対する環状角部の押圧により効果的な密封部を形成できるようにするものである。
In the fluid conduit arrangement described above, the tubing member has at least two tubing elements interconnected to define the conduit, one of the at least two tubing elements partially receiving and coupling the other. The one inner peripheral surface is provided with a female screw portion, and the other outer peripheral surface is provided with a male screw portion screw-engaged with the female screw portion. And one of the outer peripheral surfaces is provided with an annular inclined surface inclined in the longitudinal axis direction of the tube element, and the other is provided with the annular inclined surface when the male screw portion is screwed into the female screw portion. An annular corner may be provided that is pressed in the longitudinal axis direction and sealingly engages the annular surface. The effective sealing portion can be formed by pressing the annular corner portion against the annular inclined surface.

以下、本発明を添付図面に示した実施形態に基づき説明する。   Hereinafter, the present invention will be described based on the embodiments shown in the accompanying drawings.

図１は、本発明に係る管路部材の一実施形態としての管継手部材を一対備えてなる管継手を示す縦断面図であり、一対の管継手部材が連結された状態を示している。FIG. 1 is a vertical cross-sectional view showing a pipe joint including a pair of pipe joint members as an embodiment of a pipe passage member according to the present invention, showing a state in which a pair of pipe joint members are connected. 図２は、図１の管継手における一方の管継手部材の縦断面図である。FIG. 2 is a vertical cross-sectional view of one pipe joint member in the pipe joint of FIG. 図３は、図１の管継手における他方の管継手部材の縦断面図である。FIG. 3 is a vertical cross-sectional view of the other pipe joint member in the pipe joint of FIG. 図４の（１）〜（４）は、弁部材の密封部と、該密封部が係合する管部材の管路の周壁面との種々の形状を示す断面図である。4 (1) to (4) are cross-sectional views showing various shapes of the sealing portion of the valve member and the peripheral wall surface of the pipe passage of the pipe member with which the sealing portion engages.

図１は、図示しないロケットに液体燃料としての液体水素を供給するのに適した燃料供給管路で用いられる管継手１０を示しており、本発明にかかる流体管路装置は、管継手１０を構成する図で見て左右の管継手部材１２、１４としてそれぞれ具体化されている。図示の例では、左側の管継手部材１２はロケットに装着されてロケット内の燃料タンクに連通され、右側の管継手部材１４は地上の（図示しない）液体水素の貯留タンクから延びる液体水素供給ホースの先端に連結されるようになっている。管継手部材１２、１４はその基本的構成は同じであり、以下においては左側の管継手部材１２について述べ、右側の管継手部材１４の相違部分については左側の管継手部材１２の説明の後に補足的に述べることにする。 FIG. 1 shows a pipe joint 10 used in a fuel supply pipe suitable for supplying liquid hydrogen as a liquid fuel to a rocket (not shown), and the fluid pipe device according to the present invention includes the pipe joint 10. The left and right pipe joint members 12 and 14 are respectively embodied as viewed in the constituent drawings. In the illustrated example, the left pipe joint member 12 is mounted on the rocket and communicates with a fuel tank in the rocket, and the right pipe joint member 14 extends from a liquid hydrogen storage hose (not shown) on the ground. It is designed to be connected to the tip of. The pipe joint members 12 and 14 have the same basic configuration, and in the following, the left pipe joint member 12 will be described, and the different portions of the right pipe joint member 14 will be supplemented after the description of the left pipe joint member 12. I will describe it in detail.

管継手部材１２は、管部材１６と、管部材１６の管路１８内に設定された弁部材２０とを有し、好ましくは、これらは全て金属（例えば、ＳＵＳ３１６Ｌなどステンレススチール）で作られる。管部材１６は、図示しないロケット内で燃料タンクから延びる管路に連結される第１管エレメント１６aと、第１管エレメント１６ａに連結されて第1管エレメント１６ａと共に当該管継手部材１２の管路１８を形成する第２管エレメント１６ｂとからなる。弁部材２０は管路１８を開放した図１に示す開位置と該開位置から図で見て右側に変位して管路１８を閉止する図２に示す閉位置との間で管路１８の長手軸線方向で変位可能とされている。 The pipe joint member 12 has a pipe member 16 and a valve member 20 set in a pipe line 18 of the pipe member 16, and these are preferably all made of metal (for example, stainless steel such as SUS316L). The pipe member 16 includes a first pipe element 16a connected to a pipe line extending from a fuel tank in a rocket (not shown), and a pipe line of the pipe joint member 12 connected to the first pipe element 16a together with the first pipe element 16a. And a second tube element 16b forming 18 The valve member 20 is disposed between the open position shown in FIG. 1 in which the pipe 18 is opened and the closed position shown in FIG. 2 in which the pipe 18 is displaced from the open position to the right side in the drawing to close the pipe 18. It is displaceable in the longitudinal axis direction.

弁部材２０は、管部材１６内に設けられた付勢部材（具体的にはコイルスプリング）２１によって開位置から閉位置に向けて付勢されている。弁部材２０は管路１８内を横断方向に拡がる断面を有する円盤状の弁部材本体２２と、弁部材本体２２の周縁から当該弁部材本体２２の径方向外側に延びる環状の密封部２４とを有する。密封部２４は弁部材本体２２の周縁に隣接する環状の基端部分２４ａと、該基端部分２４ａよりも径方向外側の環状の先端部分２４ｂとを有しており、基端部分２４ａから先端部分２４ｂに向かう従い、閉位置から開位置に向かう方向（図で見て左方向）に傾斜して且つ先細りとなる断面を有するようにされており、密封部２４の外周面２４ｅ及び内周面２４ｉがそれぞれ円錐形状とされている。密封部２４は、弁部材２０が閉位置(図２)にあるときには管路１８の周壁面１８ａに係合して管路１８を閉止し、管路１８内の流体の圧力を受けて周壁面１８ａに押圧されるようになされている。図示の例では、周壁面１８ａは弁部材２０の密封部２４の外周面２４ｅにほぼ対応するように円錐形状とされた密封面部（弁座面部）１８ｂを有しており、弁部材２０の密封部２４は密封面部１８ｂに係合されるようにされている。図２は、弁部材２０が付勢部材２１によって閉止位置に戻され、流体の圧力はかけられていない状態を示している。密封面部１８ｂの上述の円錐形状をなす角度は、弁部材２０が管路１８内の流体圧を受けずに付勢手段２１により閉位置にされた状態において、図２に示すように弁部材２０の外周面２４ｅがその先端部分２４ｂにおいて密封面部１８ｂに係合し、外周面２４ｅの他の部分では密封面部１８ｂとの間に微小な隙間が生じるような角度とされている。 The valve member 20 is biased from the open position to the closed position by a biasing member (specifically, a coil spring) 21 provided inside the pipe member 16. The valve member 20 includes a disk-shaped valve member main body 22 having a cross section that expands in the pipe line 18 in the transverse direction, and an annular sealing portion 24 that extends from the peripheral edge of the valve member main body 22 to the outside in the radial direction of the valve member main body 22. Have. The sealing portion 24 has an annular base end portion 24a adjacent to the peripheral edge of the valve member main body 22 and an annular front end portion 24b radially outside the base end portion 24a. Accordingly, the outer peripheral surface 24e and the inner peripheral surface of the sealing portion 24 are formed so as to be inclined toward the direction from the closed position to the open position (to the left in the drawing) and taper. 24i has a conical shape. The sealing portion 24 closes the pipeline 18 by engaging with the circumferential wall surface 18a of the pipeline 18 when the valve member 20 is in the closed position (FIG. 2), and receives the pressure of the fluid in the pipeline 18 to receive the circumferential wall surface. It is adapted to be pressed by 18a. In the illustrated example, the peripheral wall surface 18 a has a conical sealing surface portion (valve seat surface portion) 18 b that substantially corresponds to the outer peripheral surface 24 e of the sealing portion 24 of the valve member 20. The part 24 is adapted to be engaged with the sealing surface part 18b. FIG. 2 shows a state in which the valve member 20 is returned to the closed position by the biasing member 21, and the fluid pressure is not applied. The angle of the sealing surface portion 18b forming the above-mentioned conical shape is as shown in FIG. 2 when the valve member 20 is in the closed position by the biasing means 21 without receiving the fluid pressure in the conduit 18. The outer peripheral surface 24e is engaged with the sealing surface portion 18b at the tip portion 24b thereof, and the other portion of the outer peripheral surface 24e is angled so as to form a minute gap with the sealing surface portion 18b.

図示の例では、第１管エレメント１６ａは第２管エレメント１６ｂ内に部分的に受け入れられて連結されており、第１管エレメント１６ａの外周面に設けた雄ネジ２６ａを第２管エレメント１６ｂの内周面に設けた雌ネジ２６ｂにねじ込んで第１及び第２管エレメント１６ａ、１６ｂの連結を行うようになっており、この連結が行われた状態では第１管エレメント１６ａに形成された環状角部２８が第２管状部材１６ｂの内周面に形成された環状傾斜面３０に押圧され密封係合されるようにされている。この実施形態とは逆に、この環状角部２８を第２管状部材１６ｂの内周面に設け、環状傾斜面３０を第１管エレメント１６ａの外周面に設けるようにすることもできる。図示の例では第１及び第２管エレメント１６ａ、１６ｂはステンレススチール等の金属により作られており、環状角部２８と環状傾斜面３０との押圧係合により、ゴムや合成樹脂などのシール材無しに、確実な密封部が形成されるようになっている。 In the illustrated example, the first pipe element 16a is partially received and connected in the second pipe element 16b, and the male screw 26a provided on the outer peripheral surface of the first pipe element 16a is connected to the second pipe element 16b. The first and second pipe elements 16a and 16b are connected to each other by being screwed into a female screw 26b provided on the inner peripheral surface, and in the state where this connection is made, the ring formed on the first pipe element 16a The corner portion 28 is pressed against the annular inclined surface 30 formed on the inner peripheral surface of the second tubular member 16b so as to be hermetically engaged. On the contrary to this embodiment, the annular corner portion 28 may be provided on the inner peripheral surface of the second tubular member 16b and the annular inclined surface 30 may be provided on the outer peripheral surface of the first tube element 16a. In the illustrated example, the first and second pipe elements 16a, 16b are made of metal such as stainless steel, and the annular corner portion 28 and the annular inclined surface 30 are pressed and engaged with each other, so that a sealing material such as rubber or synthetic resin is used. None, a secure seal is formed.

また、図２に明瞭に示すが、管部材１６は管路１８の図で見て右端の連通用開口３４と、連通用開口３４に隣接して管路１８内に設けられた弁部材支持部３２とを有しており、弁部材２０が、弁部材支持部３２より内側の管路１８内に配置されている。弁部材支持部３２にはその中心部分に管路１８の長手軸線方向で貫通された弁部材支持孔３６と、弁部材支持孔３６の周囲に間隔をあげて設けられ長手方向で貫通した複数の連通孔４０とが設けられている。弁部材２０は、弁部材本体２２から連通用開口２４の方向（右方向）に延びて弁部材支持部３２の弁部材支持孔３６内に摺動可能に通された細長い支持ガイド部４２を有しており、該支持ガイド部４２は、図で見て右側の管継手部材１４が管継手部材１２に連結されたときに押し込まれて、当該弁部材２０が閉位置から開位置に変位されるようにする。 Further, as clearly shown in FIG. 2, the pipe member 16 includes a communication opening 34 at the right end in the drawing of the conduit 18, and a valve member support portion provided in the conduit 18 adjacent to the communication opening 34. 32, and the valve member 20 is disposed inside the conduit 18 inside the valve member support portion 32. The valve member support portion 32 has a valve member support hole 36 penetrating in the central portion thereof in the longitudinal axis direction of the conduit 18, and a plurality of valve member support holes 36 provided at intervals around the valve member supporting hole 36 and penetrating in the longitudinal direction. A communication hole 40 is provided. The valve member 20 has an elongated support guide portion 42 that extends from the valve member main body 22 toward the communication opening 24 (to the right) and is slidably inserted into the valve member support hole 36 of the valve member support portion 32. The support guide portion 42 is pushed in when the pipe joint member 14 on the right side in the drawing is connected to the pipe joint member 12, and the valve member 20 is displaced from the closed position to the open position. To do so.

弁部材支持部３２は、図２に示すように、弁部材２０が付勢部材２１によって閉位置に戻された状態では、弁部材本体２２が当該弁部材支持部３２に係合しない位置（弁部材支持部３２との間に僅かの隙間を生じるような位置）とされており、弁部材２０によって閉じられた管路１８内の流体の圧力が当該弁部材２０にかかったときに密封部２４がその弾性変形により密封面部１８ｂにより強く押圧されると共に弁部材２０も弁部材支持部３２に向かって僅かに変位して密封部２４がさらに強く密封面部１８ｂに押圧密着されるようにすると共に、弁部材２０がそのような密封係合が行われる閉位置から過剰に変位するのを阻止し、弁部材２０を実質的に、当該弁部材２０の密封部２４が密封面部１８ｂに係合する閉位置に保持するようにしている（すなわち、弁部材支持部３２は特許請求の範囲の記載における「係止部」を構成している）。 As shown in FIG. 2, when the valve member 20 is returned to the closed position by the urging member 21, the valve member support portion 32 is located at a position where the valve member main body 22 does not engage with the valve member support portion 32 (valve). The position is such that a slight gap is generated between the member support portion 32 and the sealing portion 24 when the pressure of the fluid in the conduit 18 closed by the valve member 20 is applied to the valve member 20. Is strongly pressed by the sealing surface portion 18b due to its elastic deformation, and the valve member 20 is also slightly displaced toward the valve member supporting portion 32 so that the sealing portion 24 is further strongly pressed and closely attached to the sealing surface portion 18b. Preventing the valve member 20 from being excessively displaced from the closed position where such sealing engagement occurs, substantially closing the valve member 20 such that the sealing portion 24 of the valve member 20 engages the sealing surface portion 18b. To hold it in position It is (i.e., the valve member supporting portion 32 constitute a "locking unit" in the claims).

第１管エレメント１６ａには管路１８を長手軸線方向に延びる筒状部材４４が設けられており、付勢部材２１としてのコイルスプリングは筒状部材４４の周りに設定されて第１管エレメント１６ａと弁部材２０との間に圧縮設定され、弁部材２０を図２の示す位置に付勢するようになっている。この筒状部材４４は、図２に示すように、管路１８の長手軸線方向で弁部材２０から僅かに離れた位置とされており、弁部材２０が図１に示す開位置にあるときに管路内の流体圧の変動などで開位置から過剰に左方に変位されるのを防止する作用もなす（すなわち、筒状部材４４は特許請求の範囲の記載における「変位阻止部材」を構成している）。 The first pipe element 16a is provided with a tubular member 44 extending in the longitudinal axis direction of the pipe line 18, and the coil spring as the biasing member 21 is set around the tubular member 44 so that the first pipe element 16a is provided. Is set between the valve member 20 and the valve member 20, and the valve member 20 is biased to the position shown in FIG. As shown in FIG. 2, the tubular member 44 is located at a position slightly separated from the valve member 20 in the longitudinal axis direction of the conduit 18, and when the valve member 20 is in the open position shown in FIG. It also acts to prevent excessive displacement to the left from the open position due to fluctuations in the fluid pressure in the pipeline (that is, the tubular member 44 constitutes the "displacement prevention member" in the claims). is doing).

図３には、右側の管継手部材１４が示されており、管継手部材１２の構成要素と実質的に同じ構成要素には同じ参照番号を付して示してある。管継手部材１４が管継手部材１２と異なる点は、それら管継手部材１２、１４を連結固定するためのロック機構５０を備えることである。このロック機構５０は、第２管エレメント１６ｂの図で見て左端部周縁に沿って間隔をあけて取り付けられた複数のロックエレメント５２を有している。ロックエレメント５２は図３に示すロック解除位置と、図１に示すロック位置との間で枢動可能とされている。具体的には、ロックエレメント５２は、第２管状部材１６ｂに枢着された基部ブロック５４と、基部ブロック５４に設けられた挿通孔５６に通された締付ボルト５８のネジ部５８ａの先端部がねじ係合された係合ブロック６０とを有している。また、ロック機構５０は第２管エレメント１６ｂの右端外周に固定された筒状ベース部材６２と、筒状ベース部材６２の外周に取り付けられ、筒状ベース部材６２の長手方向で摺動可能とされたロック解除リング６４とを有している。左右の管継手部材１２、１４が連結されるときは、筒状ベース部材６２は左側の管継手部材１２の右端部を受け入れるように嵌合し、ロックエレメント５２を係合ブロック６０が管継手部材１２のロック用環状突起６６に係合する位置として締付ボルト５８を回して、係合ブロック６０がロック用環状突起６６に押し付けられるようにする。左右の管継手部材１２、１４を連結解除するときは、ロック解除リング６４を図１の位置から筒状ベース部材６２上で、図で見て右方に変位させる。基部ブロック５４の内側面５４ａは傾斜が付けられており、ロック解除リング６４を右方に変位させて該傾斜した内側面５４ａと摺動させると、くさび効果によりロックエレメント５２は図１で見て時計方向に強制的に回動され、係合ブロック６０がロック用環状突起６６から外されて、管継手部材１２、１４の連結が解除される。   In FIG. 3, the right pipe fitting member 14 is shown, with components that are substantially the same as the components of the pipe fitting member 12 being labeled with the same reference numbers. The pipe joint member 14 is different from the pipe joint member 12 in that a lock mechanism 50 for connecting and fixing the pipe joint members 12 and 14 is provided. The locking mechanism 50 has a plurality of locking elements 52 which are attached at intervals along the peripheral edge of the left end of the second pipe element 16b as viewed in the drawing. The locking element 52 is pivotable between the unlocked position shown in FIG. 3 and the locked position shown in FIG. Specifically, the lock element 52 includes a base block 54 pivotally attached to the second tubular member 16b, and a tip portion of a screw portion 58a of a tightening bolt 58 passed through an insertion hole 56 provided in the base block 54. Has an engagement block 60 threadedly engaged therewith. The lock mechanism 50 is attached to the cylindrical base member 62 fixed to the outer periphery of the right end of the second pipe element 16b and the outer periphery of the cylindrical base member 62, and is slidable in the longitudinal direction of the cylindrical base member 62. And a lock release ring 64. When the left and right pipe joint members 12 and 14 are connected, the tubular base member 62 is fitted so as to receive the right end portion of the left pipe joint member 12, and the locking element 52 is engaged by the engagement block 60. The tightening bolt 58 is rotated to a position where it engages with the locking annular projection 66 of 12 so that the engagement block 60 is pressed against the locking annular projection 66. When disconnecting the left and right pipe joint members 12 and 14, the lock release ring 64 is displaced from the position of FIG. 1 on the tubular base member 62 to the right in the figure. The inner surface 54a of the base block 54 is inclined, and when the lock release ring 64 is displaced to the right and slid with the inclined inner surface 54a, the locking element 52 is seen in FIG. 1 due to the wedge effect. The engagement block 60 is forcibly rotated in the clockwise direction, the engagement block 60 is disengaged from the locking annular projection 66, and the connection between the pipe joint members 12 and 14 is released.

本発明に係る図１に示す管継手１０においては、左右の管継手部材１２、１４を連結したときにそれらの間を外部から密封するために、上述した弁部材２０と同様のメカニズムで行われている密封方法が用いられている。すなわち、左側の管継手部材１２の右端の連通用開口３４を画定している周壁面１８ａは円錐状とされており、その内側には右側の管継手部材１４の左端に形成された先細りの環状密封部６８が嵌合されている。この環状密封部６８は左右の管継手部材１２、１４が連結されて流体が流されると、該流体の圧力により半径方向外側に付勢され、周壁面１８ａに押圧されて密封係合されるようになっている。 In the pipe joint 10 shown in FIG. 1 according to the present invention, when the left and right pipe joint members 12 and 14 are connected to each other, the same mechanism as that of the valve member 20 described above is used in order to seal between them. The sealing method is used. That is, the peripheral wall surface 18a that defines the communication opening 34 at the right end of the left pipe joint member 12 has a conical shape, and the inside thereof has a tapered annular shape formed at the left end of the right pipe joint member 14. The sealing portion 68 is fitted. When the left and right pipe joint members 12, 14 are connected and a fluid is flown, the annular sealing portion 68 is urged radially outward by the pressure of the fluid and pressed by the peripheral wall surface 18a to be hermetically engaged. It has become.

以上においては、ロケットへの液体水素供給のための流体管路で用いられる管継手を本発明の実施形態として説明した。この実施形態で示した管継手の弁部材を含む全てのエレメントをＳＡＳ３１６Ｌで作成し、零下２５３℃の極低温から常温へ、または７０ＭＰａの超高圧から常圧への反復使用実験を行ったが、弁部材の劣化は極めて少ないことが示された。この実施形態として示された管継手（流体管路装置）では、従来の管継手で使用されていたゴムや合成樹脂製のシール部分がなく、このためロケットへの液体水素供給や水素自動車への水素ガス供給といった過酷な条件のもとでも反復継続使用を可能とする。しかし、本発明は超高圧や極低温ではない流体を扱う管路においても適用可能であり、そのような場合には必ずしも金属で作る必要はない。また、弁部材２０の密封部２４と、該密封部２４が係合する管部材１６の管路１８の周壁面１８における密封面部（弁座面部）１８ｂとの形状は、図４の（１）〜（４）に例示するように種々のものとすることができる。   In the above, the pipe joint used in the fluid pipeline for supplying liquid hydrogen to the rocket has been described as the embodiment of the present invention. All elements including the valve member of the pipe joint shown in this embodiment were made with SAS316L, and repeated use experiments were performed from a cryogenic temperature of 253 ° C. below zero to a room temperature, or from an ultrahigh pressure of 70 MPa to a normal pressure. It was shown that the deterioration of the valve member was extremely small. In the pipe joint (fluid pipe line device) shown as this embodiment, there is no seal portion made of rubber or synthetic resin used in the conventional pipe joint, and therefore, liquid hydrogen is supplied to the rocket or to a hydrogen vehicle. It enables repeated use under severe conditions such as hydrogen gas supply. However, the present invention can also be applied to a pipeline that handles a fluid that is neither ultra-high pressure nor cryogenic temperature, and in such a case, it is not necessarily required to be made of metal. Further, the shapes of the sealing portion 24 of the valve member 20 and the sealing surface portion (valve seat surface portion) 18b on the peripheral wall surface 18 of the conduit 18 of the pipe member 16 with which the sealing portion 24 engages are (1) in FIG. Various types can be used as illustrated in (4) to (4).

管継手１０
管継手部材１２、１４
管部材１６
第１管エレメント１６a
第２管エレメント１６ｂ
管路１８
周壁面１８ａ
密封面部（弁座面部）１８ｂ
弁部材２０
付勢部材２１
弁部材本体２２
密封部２４
基端部分２４ａ
先端部分２４ｂ
外周面２４ｅ
内周面２４ｉ
雄ネジ２６ａ
雌ネジ２６ｂ
環状角部２８
環状傾斜面３０
弁部材支持部３２
連通用開口３４
弁部材支持孔３６
連通孔４０
支持ガイド部４２
筒状部材４４
ロック機構５０
ロックエレメント５２
基部ブロック５４
内側面５４ａ
挿通孔５６
締付ボルト５８
ネジ部５８ａ
係合ブロック６０
筒状ベース部材６２
ロック解除リング６４
ロック用環状突起６６
環状係止部６８ Pipe fitting 10
Pipe joint members 12, 14
Pipe member 16
First pipe element 16a
Second pipe element 16b
Pipeline 18
Perimeter wall 18a
Sealing surface portion (valve seat surface portion) 18b
Valve member 20
Biasing member 21
Valve member main body 22
Sealing part 24
Proximal end portion 24a
Tip portion 24b
Outer peripheral surface 24e
Inner peripheral surface 24i
Male screw 26a
Female screw 26b
Annular corner 28
Annular inclined surface 30
Valve member support 32
Communication opening 34
Valve member support hole 36
Communication hole 40
Support guide part 42
Tubular member 44
Lock mechanism 50
Lock element 52
Base block 54
Inner surface 54a
Insertion hole 56
Tightening bolt 58
Screw part 58a
Engagement block 60
Tubular base member 62
Unlock ring 64
Ring projection 66 for lock
Annular locking part 68

Claims (11)

管路内に設定されて該管路を開放する開位置と該管路を閉止する閉位置との間で該管路の長手軸線方向で変位するようにされる弁部材であって、
弁部材本体と、
該弁部材本体の周縁に設けられた可撓性を有する環状の密封部を備え、
該密封部が、該弁部材が該閉位置にあるときに該管路の周壁面に係合して該管路を閉止し、該管路内の流体の圧力を受けて該管路の周壁面に押圧されるようになされた弁部材。 A valve member that is set in the pipeline and is configured to be displaced in the longitudinal axis direction of the pipeline between an open position that opens the pipeline and a closed position that closes the pipeline,
A valve member body,
A ring-shaped sealing portion having flexibility provided on the periphery of the valve member main body,
The sealing portion closes the pipeline by engaging with the peripheral wall surface of the pipeline when the valve member is in the closed position, and receives the pressure of the fluid in the pipeline to surround the pipeline. A valve member that is pressed against the wall surface. 該密封部が該弁部材本体の該周縁に隣接する環状の基端部分から径方向外側の環状の先端部分に延びるに従い先細りとなる断面を有し、該先端部分が該管路の該周壁面に係合し該管路内の流体の圧力を受けて押圧されるようにした請求項１に記載の弁部材。   The sealing portion has a cross section that tapers as it extends from the annular base end portion adjacent to the peripheral edge of the valve member main body to the annular outer end portion in the radial direction, and the distal end portion is the peripheral wall surface of the conduit. The valve member according to claim 1, wherein the valve member is engaged with and is pressed by receiving the pressure of the fluid in the conduit. 該密封部が該基端部分から該先端部分に向かうに従い該閉位置から該開位置に向かう方向に傾斜しており、該密封部の外周面が円錐形状とされている請求項２に記載の弁部材。   The said sealing part inclines in the direction which goes to the said open position from the said base end part toward the said front end part, and the outer peripheral surface of the said sealing part has a conical shape. Valve member. 金属からなる請求項1乃至３の何れか一項に記載の弁部材。   The valve member according to any one of claims 1 to 3, which is made of metal. 管路を有する管部材と、
該管路内に設定されて該管路を開放する該開位置と該管路を閉止する該閉位置との間を該管路の長手軸線方向で変位するようにされた請求項１乃至４の何れか一項に記載の弁部材と、
を有する流体管路装置。 A pipe member having a pipe line,
5. A displacement is set in the conduit in the longitudinal axis direction of the conduit between the open position for opening the conduit and the closed position for closing the conduit. A valve member according to any one of,
And a fluid line device. 該管部材内に設けられて該弁部材を該開位置から該閉位置に付勢する付勢部材を有し、
該管部材は、該管路を画定する周壁面が、該弁部材が該管路内の流体圧を受けずに該付勢手段により該閉位置にされた状態において、該弁部材の該密封部と係合する密封面部を有し、
該管部材は、該閉位置にされた該弁部材が該弁部材によって閉止された該管路内の流体圧により該閉位置から変位されるのを阻止する係止部を更に有する請求項５に記載の流体管路装置。 A biasing member provided in the pipe member for biasing the valve member from the open position to the closed position;
The pipe member seals the valve member when the peripheral wall surface defining the pipe line is in the closed position by the biasing means without receiving the fluid pressure in the pipe line. A sealing surface portion that engages the portion,
6. The tube member further comprises a locking portion that prevents the valve member in the closed position from being displaced from the closed position by fluid pressure in the conduit closed by the valve member. The fluid conduit device according to. 該弁部材の該密封部は該弁部材本体の該周縁に隣接する環状の基端部分と、径方向外側の環状の先端部分とを有しており、該基端部分から該先端部分に向かう従い該閉位置から該開位置に向かう方向に傾斜して、該密封部の外周面が円錐形状とされており、該周壁面の該密封面部は該外周面に対応するように円錐形状とされており、該密封面部の該円錐形状をなす角度は、該弁部材が該管路内の流体圧を受けずに該付勢手段により該閉位置にされた状態において、該外周面が該先端部分において該密封面部に係合し、該先端部分から該基端部分においては隙間が生じるような角度となるようにされている請求項６に記載の流体管路装置。   The sealing portion of the valve member has an annular base end portion adjacent to the peripheral edge of the valve member main body, and a radially outer annular end portion, and extends from the base end portion toward the distal end portion. Therefore, the outer peripheral surface of the sealing portion is conical and inclined in the direction from the closed position to the open position, and the sealing surface portion of the peripheral wall surface is conical so as to correspond to the outer peripheral surface. The angle of the conical surface of the sealing surface is such that the outer peripheral surface is the tip when the valve member is in the closed position by the biasing means without receiving the fluid pressure in the conduit. 7. The fluid conduit device according to claim 6, wherein the angle is such that a portion engages with the sealing surface portion and a gap is generated from the tip portion to the base end portion. 該管部材が該管路の一端の連通連通用開口と、該連通用開口に隣接して該管路内に設けられた弁部材支持部とを有し、該弁部材が、該弁部材支持部より内側の該管路内に配置され、該弁部材本体から該連通用開口の方向に延びて該弁部材支持部に該長手軸線方向で貫通するように設けられた弁部材支持孔内に摺動可能に通された支持ガイド部を有するようにして当該流体管路装置を管継手部材として構成し、
該支持ガイド部は、当該管継手部材に連結される対応する管継手部材と連結されたときに、該対応する管継手部材によって押し込まれて、該弁部材が該閉位置から該開位置に向けて変位されるようにされた請求項５乃至７の何れか一項に記載の流体管路装置。 The pipe member has a communication passage opening at one end of the pipe passage, and a valve member support portion provided in the pipe passage adjacent to the communication opening, and the valve member supports the valve member support. A valve member support hole that is disposed inside the pipe member, extends from the valve member main body in the direction of the communication opening, and extends through the valve member support member in the longitudinal axis direction. The fluid conduit device is configured as a pipe joint member by having a support guide portion slidably passed through,
The support guide portion is pushed by the corresponding pipe joint member when connected to the corresponding pipe joint member connected to the pipe joint member, and the valve member is directed from the closed position to the open position. The fluid conduit device according to any one of claims 5 to 7, wherein the fluid conduit device is configured to be displaced. 該弁部材支持部は、該閉位置とされた該弁部材が該弁部材によって閉じられた該管路内の流体圧によって該連通用開口に向けて押圧されたときに該弁部材本体と係合して該弁部材が該閉位置から変位するのを阻止するようにされている請求項８に記載の流体管路装置。   The valve member support portion engages with the valve member main body when the valve member in the closed position is pressed toward the communication opening by the fluid pressure in the conduit closed by the valve member. 9. A fluid line device according to claim 8 which is adapted to prevent the valve member from displacing from the closed position. 該管部材は、該開位置にある該弁部材よりも該管路の内側位置に設けられ、該連通用開口から離れる方向で該開位置から変位される該弁部材に係合して該弁部材の更なる変位を阻止する変位阻止部材を有する請求項８又は９に記載の流体管路装置。   The pipe member is provided at a position inside the pipe line with respect to the valve member in the open position, and engages with the valve member displaced from the open position in a direction away from the communication opening to open the valve. The fluid line device according to claim 8 or 9, further comprising a displacement prevention member that prevents further displacement of the member. 該管部材は、相互に連結されて該管路を画定する少なくとも２つの管エレメントを有し、該少なくとも２つの管エレメントの一方は他方を部分的に受け入れて連結されるようになされており、該一方の内周面には雌ネジ部が、他方の外周面には該雌ネジ部にねじ係合される雄ネジ部が設けられており、該内周面及び該外周面の一方には該管エレメントの長手軸線方向で傾斜の付けられた環状傾斜面が、他方には該雄ネジ部が該雌ネジ部にねじ込まれたときに該環状傾斜面に該長手軸線方向で押圧されて該環状傾斜面に密封係合される環状角部が設けられている請求項５乃至１０のいずれか一項に記載の流体管路装置。   The tube member has at least two tube elements interconnected to define the conduit, one of the at least two tube elements being adapted to partially receive the other and to be connected; A female screw portion is provided on the one inner peripheral surface, and a male screw portion that is screw-engaged with the female screw portion is provided on the other outer peripheral surface. One of the inner peripheral surface and the outer peripheral surface is provided. On the other hand, an annular inclined surface inclined in the longitudinal axis direction of the pipe element is pressed against the annular inclined surface in the longitudinal axis direction when the male screw part is screwed into the female screw part. The fluid conduit device according to any one of claims 5 to 10, wherein an annular corner portion that is sealingly engaged with the annular inclined surface is provided.
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CN112728257B (en) * 2020-12-09 2022-08-16 上海群力紧固件制造有限公司 Self-sealing connector
WO2022209770A1 (en) * 2021-03-29 2022-10-06 三菱電機株式会社 Pipe connection joint

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