JPH0616227Y2 - Pressure vessel filling device - Google Patents
Pressure vessel filling deviceInfo
- Publication number
- JPH0616227Y2 JPH0616227Y2 JP1988004101U JP410188U JPH0616227Y2 JP H0616227 Y2 JPH0616227 Y2 JP H0616227Y2 JP 1988004101 U JP1988004101 U JP 1988004101U JP 410188 U JP410188 U JP 410188U JP H0616227 Y2 JPH0616227 Y2 JP H0616227Y2
- Authority
- JP
- Japan
- Prior art keywords
- shaft portion
- pressure
- fitting hole
- hole
- connection port
- 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.)
- Expired - Lifetime
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、呼吸器の吸気用気体の圧力容器に、その気体
を充填するためなどに有利に実施することができる圧力
容器の充填装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling device for a pressure vessel, which can be advantageously used for filling a pressure vessel for inspiratory gas of a respiratory organ with the gas.
従来の技術 従来から、呼吸器に備えられている圧力容器では、高圧
力であるたとえば３００kgf/cm2の圧縮空気または圧縮
酸素などの吸気用気体が充填される。また他の種類の呼
吸器に備えられている圧縮容器では、低圧力であるたと
えば１５０kgf/cm2の吸気用気体が充填されている。 2. Description of the Related Art Conventionally, a pressure vessel provided in a respirator is filled with high-pressure compressed air such as 300 kgf / cm 2 or inspiratory gas such as compressed oxygen. In addition, a compression container provided in another type of respirator is filled with an inspiratory gas having a low pressure, for example, 150 kgf / cm 2 .
このような吸気用気体の充填時に低圧力用圧力容器に高
圧力の吸気用気体を充填すると危険である。It is dangerous to fill the low-pressure pressure vessel with the high-pressure intake gas when filling the intake gas.
考案が解決すべき課題 本考案の目的は、圧力が異なる気体が、圧力容器の許容
圧力を越えて充填されないようにして圧力容器に充填す
るための圧力容器の充填装置を提供することである。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention An object of the present invention is to provide a pressure container filling device for filling a pressure container so that gases having different pressures will not be filled beyond the allowable pressure of the pressure container.
課題を解決するための手段 本考案は、（ａ）高圧力気体源３に接続される第１充填
工具５を、その第１軸部１４が低圧力用圧力容器１の第
１容器弁の第１接続口２に形成された第１嵌合孔８と、
高圧力用圧力容器６０の第２容器弁の第２接続口６１に
形成された第２嵌合孔６４とに嵌合して、第１接続手段
１５によつて第１および第２接続口２，６１に着脱可能
とし、 （ｂ）低圧力気体源３ａに接続される第２充填工具５ａ
を、その第２軸部１４ａが第１嵌合孔８と、第２嵌合孔
６４とに嵌合して、第２接続手段１５ａによつて着脱可
能とし、 （ｃ）第１軸部１４には、高圧力気体を供給する第１通
路２７が形成され、 第１軸部１４の先端突部３１から軸線方向内方の位置で
側方に開口し第１通路２７に連通した径孔３４が形成さ
れ、 その径孔３４からさらに軸線方向内方に環状の第１シー
ル部材３２が固定され、 （ｄ）第１接続手段１５には、第１容器弁の第２接続口
２に接続されるとき第１嵌合孔８の開放端７１を大気に
連通する挿通孔４５，４６が形成され、 （ｅ）第２軸部１４ａには、低圧力気体を供給する第２
通路２７ａが形成され、 第２軸部１４ａの先端部１２１の端面１２２に開口し、
かつ第２通路２７ａに連通した連通孔３５ａが形成さ
れ、 前記端面１２２から軸線方向内方に環状の第２シール部
材３２ａが固定され、 （ｆ）第１接続口２において、第１嵌合孔８の先端１１
には、第１容器弁から低圧力用圧力容器１内の充填空間
に連通する第３通路１２の開口端１１１が臨み、 この開口端１１１は、先端突部３１の外径よりも小径で
あり、第１充填工具５の第１接続口２への装着時におけ
る先端突部３１の位置に対応した位置に形成され、 第１嵌合孔８内には第１シール面９が形成され、 （ｇ）第２接続口６１において、第２嵌合孔６４の先端
に、収納孔６２が形成され、 この収納孔６２は、 先端突部３１が収納可能であり、 かつ第２容器弁から高圧力用圧力容器６０内の充填空間
に連通する第４通路６３に連通し、 かつ第１軸部１４の前記径孔３４が形成された部分の外
径を越える内径を有し、 第２嵌合孔６４内には第２シール面６５が形成され、 （ｈ）第１充填工具５を、第１軸部１４が第１嵌合孔８
に嵌合して第１接続手段１５によつて第１接続口２に装
着したとき、先端突部３１が第３通路１２の開口端１１
１に当接してその開口端１１１を略閉塞し、 （ｉ）第１充填工具５を、第１軸部１４が第２嵌合孔６
４に嵌合して第１接続手段１５によつて第２接続口６１
に装着したとき、第１シール部材３２が第２シール面６
５に当接し、 （ｊ）第２充填工具５ａを、第２軸部１４ａが第１嵌合
孔８に嵌合して第２接続手段１５ａによつて第１接続口
２に装着したとき、第２シール部材３２ａが第１シール
面９に当接し、 （ｋ）第２充填工具５ａを、第２軸部１４ａが第２嵌合
孔６４に嵌合して第２接続手段１５ａによつて第２接続
口６１に装着したとき、第２シール部材３２ａが第２シ
ール面６５に当接することを特徴とする圧力容器の充填
装置である。Means for Solving the Problems The present invention provides (a) a first filling tool 5 connected to a high pressure gas source 3, the first shaft portion 14 of which is the first container valve of the low pressure pressure container 1. 1st fitting hole 8 formed in 1 connection port 2,
The first and second connection ports 2 are fitted by the first connection means 15 by fitting with the second fitting hole 64 formed in the second connection port 61 of the second container valve of the high-pressure pressure container 60. , 61, and (b) a second filling tool 5a connected to the low pressure gas source 3a.
The second shaft portion 14a is fitted into the first fitting hole 8 and the second fitting hole 64, and is detachable by the second connecting means 15a. (C) The first shaft portion 14 A first passage 27 for supplying a high-pressure gas is formed therein, and a diameter hole 34 that opens laterally at a position axially inward from the tip projection 31 of the first shaft portion 14 and communicates with the first passage 27. Is formed, and the annular first seal member 32 is fixed further inward in the axial direction from the diameter hole 34. (d) The first connection means 15 is connected to the second connection port 2 of the first container valve. Insertion holes 45 and 46 that communicate the open end 71 of the first fitting hole 8 with the atmosphere when (e) the second shaft portion 14a is supplied with a low pressure gas
A passage 27a is formed and opens at the end surface 122 of the tip 121 of the second shaft portion 14a,
A communication hole 35a communicating with the second passage 27a is formed, an annular second seal member 32a is fixed inward in the axial direction from the end face 122, and (f) a first fitting hole at the first connection port 2. Tip 11 of 8
Faces the opening end 111 of the third passage 12 that communicates with the filling space in the low-pressure pressure container 1 from the first container valve, and the opening end 111 has a diameter smaller than the outer diameter of the tip projection 31. , A position corresponding to the position of the tip projection 31 when the first filling tool 5 is attached to the first connection port 2, and a first sealing surface 9 is formed in the first fitting hole 8. g) In the second connection port 61, a storage hole 62 is formed at the tip of the second fitting hole 64. The storage hole 62 is capable of storing the tip projection 31 and has a high pressure from the second container valve. A second fitting hole that communicates with a fourth passage 63 that communicates with a filling space in the pressure vessel 60 and that has an inner diameter that exceeds the outer diameter of the portion of the first shaft portion 14 in which the diameter hole 34 is formed. A second sealing surface 65 is formed in 64, and (h) the first filling tool 5 has the first shaft portion 14 with the first fitting hole 8
When fitted to the first connecting port 2 by the first connecting means 15, the tip projection 31 causes the open end 11 of the third passage 12.
1, the opening end 111 is substantially closed, and (i) the first filling tool 5 has the first shaft portion 14 and the second fitting hole 6
4 and the second connecting port 61 by the first connecting means 15.
When the first seal member 32 is attached to the second seal surface 6
5, and (j) when the second shaft portion 14a is fitted into the first fitting hole 8 and the second filling tool 5a is mounted on the first connection port 2 by the second connecting means 15a, The second seal member 32a comes into contact with the first seal surface 9, and (k) the second filling tool 5a is fitted into the second fitting hole 64 by the second shaft portion 14a, whereby the second connecting means 15a is used. The pressure vessel filling device is characterized in that the second sealing member 32a comes into contact with the second sealing surface 65 when attached to the second connection port 61.
作用 本考案に従えば、第１図に示されるように高圧力気体源
３に接続される第１充填工具５を、第１接続手段１５に
よつて低圧力用圧力容器１の第１容器弁の第１接続口２
に装着すると、第１充填工具５の第１軸部１４が第１接
続口２に形成された第１嵌合孔８に嵌合し、このとき第
１軸部１４の先端突部３１は、第１容器弁から低圧力用
充填空間に連通する第３通路１２の開口端１１１に当接
して、その開口端１１１を略閉塞する。したがつて高圧
力気体源３から低圧力用圧力容器１に高圧力気体が供給
されることはない。このとき、径孔３４からの高圧力気
体は、第１軸部１４の外周面と第１嵌合孔８との間の間
隙４７から開放端７１を経て、さらに挿通孔４５，４６
を経て大気に放出される。これによつて高圧力気体の圧
力によつて第１接続手段１５が第１接続口２から離脱し
てしまう危険がなく、またその高圧力気体が挿通孔４
５，４６から大気に放出されることによつて音が発生
し、そのため高圧力気体が低圧力用圧力容器１の第１容
器弁の第１接続口２に接続されたことを知ることができ
る。According to the present invention, the first filling tool 5 connected to the high pressure gas source 3 as shown in FIG. 1 is connected to the first container valve of the low pressure pressure container 1 by the first connecting means 15. First connection port 2
When fitted to, the first shaft portion 14 of the first filling tool 5 is fitted into the first fitting hole 8 formed in the first connection port 2, and at this time, the tip projection 31 of the first shaft portion 14 is The opening end 111 of the third passage 12 communicating with the low pressure filling space from the first container valve is brought into contact with the opening end 111 to substantially close the opening end 111. Therefore, the high pressure gas is not supplied from the high pressure gas source 3 to the low pressure pressure vessel 1. At this time, the high-pressure gas from the radial hole 34 passes through the open end 71 from the gap 47 between the outer peripheral surface of the first shaft portion 14 and the first fitting hole 8, and then the insertion holes 45, 46.
And then released into the atmosphere. As a result, there is no risk that the first connecting means 15 will separate from the first connection port 2 due to the pressure of the high-pressure gas, and the high-pressure gas will have the high-pressure gas.
It is possible to know that the high pressure gas is connected to the first connection port 2 of the first container valve of the low pressure pressure container 1 because a sound is generated by being emitted from the air from 5, 46 to the atmosphere. .
また第３図に示されるように、高圧力気体源３に接続さ
れる第１充填工具５を、第１接続手段１５によつて、高
圧力用圧力容器６０の第２容器弁の第２接続口６１に装
着すると、第１充填工具５の第１軸部１４に形成された
先端突部３１は、第２嵌合孔６４の先端に形成された収
納孔６２に収納され、この収納孔６２の内径は、第１軸
部１４の径孔３４が形成された部分の外径を越える値を
有しており、したがつて高圧力気体源３からの高圧力気
体は、第１軸部１４の第１通路２７から径孔３４を経て
収納孔６２から第２通路６３から第２容器弁を経て高圧
力用圧力容器６０に供給される。こうして高圧力用圧力
容器６０に高圧力気体源３からの高圧力気体が供給され
て充填される。このとき第１軸部１４に固定されている
環状の第１シール部材３２は、第２嵌合孔６４の第２シ
ール面６５に当接し、したがつて高圧力気体が外部に漏
洩することが防がれる。Further, as shown in FIG. 3, the first filling tool 5 connected to the high pressure gas source 3 is connected by the first connecting means 15 to the second connection of the second container valve of the high pressure pressure container 60. When mounted on the mouth 61, the tip projection 31 formed on the first shaft portion 14 of the first filling tool 5 is stored in the storage hole 62 formed at the tip of the second fitting hole 64. The inner diameter of the first shaft portion 14 exceeds the outer diameter of the portion of the first shaft portion 14 in which the diameter hole 34 is formed. Therefore, the high pressure gas from the high pressure gas source 3 is Is supplied from the first passage 27 through the diameter hole 34, the storage hole 62 through the second passage 63 through the second container valve to the high pressure pressure container 60. In this manner, the high pressure gas from the high pressure gas source 3 is supplied to and filled in the high pressure pressure container 60. At this time, the annular first seal member 32 fixed to the first shaft portion 14 comes into contact with the second seal surface 65 of the second fitting hole 64, so that the high-pressure gas may leak to the outside. It is prevented.
さらにまた第４図に示されるように、低圧力気体源３ａ
に接続される第２充填工具５ａを、第２接続手段１５ａ
によつて低圧力用圧力容器１の第１容器弁の第１接続口
２に装着すると、第２充填工具５ａの第２軸部１４ａは
第１嵌合孔８に嵌合し、この第２軸部１４ａに固定され
ている第２シール部材３２ａが第１接続口２の第１嵌合
孔８に形成されている第１シール面９に当接し、この状
態で低圧力気体源３ａからの低圧力気体は、第２軸部１
４ａに形成された第２通路２７ａから連通孔３５ａを経
て、さらに第２軸部１４ａの先端部１２１の端面１２２
における連通孔３５ａの開口を経て第１接続口２の第３
通路１２から第１容器弁を経て低圧力用圧力容器１に、
その低圧力気体が漏洩することなく、供給される。Furthermore, as shown in FIG. 4, the low pressure gas source 3a
The second filling tool 5a connected to the second connecting means 15a
Therefore, when it is attached to the first connection port 2 of the first container valve of the low pressure pressure container 1, the second shaft portion 14a of the second filling tool 5a fits into the first fitting hole 8 and The second seal member 32a fixed to the shaft portion 14a abuts on the first seal surface 9 formed in the first fitting hole 8 of the first connection port 2, and in this state, the low pressure gas source 3a The low pressure gas is the second shaft portion 1
4a through the second passage 27a, the communication hole 35a, and the end surface 122 of the tip 121 of the second shaft portion 14a.
Through the communication hole 35a of the first connection port 2
From the passage 12 through the first container valve to the low pressure pressure container 1,
The low pressure gas is supplied without leaking.
さらに第５図に示されるように、低圧力気体源３ａに接
続される第２充填工具５ａを、第２接続手段１５ａによ
つて、高圧力用圧力容器６０の第２接続口６１に装着す
ると、第２軸部１４ａは第２接続口６１に形成された第
２嵌合孔６４に嵌合し、このとき第２軸部１４ａに固定
されている第２シール部材３２ａは、第２嵌合孔６４の
第２シール面６５に当接し、こうして低圧力気体源３ａ
からの低圧力気体は、第２軸部１４ａに形成された第２
通路２７ａおよびその第２軸部１４ａの連通孔３５ａを
経て、その先端部１２１の端面１２２における連通孔３
５ａの開口を経て、さらに収納孔６２から第４通路６３
および第２容器弁を経て高圧力用圧力容器６０に、低圧
力気体が、漏洩することなく供給される。Further, as shown in FIG. 5, when the second filling tool 5a connected to the low pressure gas source 3a is attached to the second connection port 61 of the high pressure pressure vessel 60 by the second connecting means 15a. The second shaft portion 14a is fitted in the second fitting hole 64 formed in the second connection port 61, and the second seal member 32a fixed to the second shaft portion 14a at this time is the second fitting member. Abut on the second sealing surface 65 of the hole 64, and thus the low pressure gas source 3a
The low-pressure gas from the second is formed on the second shaft portion 14a.
The communication hole 3 in the end face 122 of the tip 121 is passed through the communication hole 35a of the passage 27a and the second shaft portion 14a thereof.
5a, and then from the storage hole 62 to the fourth passage 63.
The low-pressure gas is supplied to the high-pressure pressure container 60 via the second container valve without leaking.
実施例 第１図は、本考案の一実施例の断面図であり、第２図は
第１図の切断面線II-IIから見た断面図である。高圧力
吸気用気体を充填するための圧力容器１には、容器弁が
固定され、この容器弁の接続口２にはたとえば圧縮機な
どによつて実現される高圧力気体源３からの高圧力（た
とえば３００kgf/cm2）の気体が管路４を経て充填工具
５に供給される。管路４は管継手６によつて充填工具５
に接続される。Embodiment FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along section line II-II of FIG. A container valve is fixed to the pressure container 1 for filling the high-pressure intake gas, and a high pressure from a high-pressure gas source 3 realized by, for example, a compressor is provided at a connection port 2 of the container valve. Gas (for example, 300 kgf / cm 2 ) is supplied to the filling tool 5 via the pipe 4. The pipe 4 is filled with the filling tool 5 by the pipe joint 6.
Connected to.
容器弁の接続口２には、嵌合孔８が形成される。嵌合孔
８は、中空円錐台状のシール面９と、軸線方向に内径が
一様である直円筒状の嵌合面１０とを有する。シール面
９の先端１１は、通路１２を経て接続口２から容器弁を
経て圧力容器１内の充填空間に連通している。A fitting hole 8 is formed in the connection port 2 of the container valve. The fitting hole 8 has a hollow frustoconical seal surface 9 and a right cylindrical fitting surface 10 having an inner diameter that is uniform in the axial direction. The tip 11 of the sealing surface 9 communicates with the filling space in the pressure vessel 1 through the passage 12, the connection port 2 and the vessel valve.
前記充填工具５は、管継手６によつて管路４が接続され
る接続部１３と、接続部１３に固定された軸部１４と、
この軸部１４が挿通する接続手段としての袋ナット１５
とを含む。接続部１３は、前記管継手６が螺着されるね
じ部１７と、ねじ部１７に連なる筒部１８とを有する。
ねじ部１７の外周面には外ねじが刻設され、この外ねじ
に前記管継手６の内周面に形成された内ねじが螺合され
る。またねじ部１７には凹所１９が形成され、この凹所
１９内に前記管路４の先端部が挿入される。凹所１９内
に管路４の先端部が装着された状態で、凹所１９の内周
面と管路４の先端部の外周面とは、気密に接続される。The filling tool 5 includes a connecting portion 13 to which the pipe 4 is connected by a pipe joint 6, and a shaft portion 14 fixed to the connecting portion 13.
A cap nut 15 as a connecting means through which the shaft portion 14 is inserted.
Including and The connecting portion 13 has a screw portion 17 to which the pipe joint 6 is screwed, and a tubular portion 18 continuous with the screw portion 17.
An outer thread is engraved on the outer peripheral surface of the thread portion 17, and an inner thread formed on the inner peripheral surface of the pipe joint 6 is screwed into the outer thread. A recess 19 is formed in the threaded portion 17, and the tip of the conduit 4 is inserted into the recess 19. The inner peripheral surface of the recess 19 and the outer peripheral surface of the distal end of the conduit 4 are hermetically connected to each other with the distal end of the conduit 4 mounted in the recess 19.
筒部１８には凹所２２が形成され、凹所２２の内周面に
は内ねじ２３が刻設される。この内ねじ２３には、軸部
１４の外周面に刻設された外ねじ２４が螺合して接続部
１３に軸部１４が螺着される。このような接続部１３と
軸部１４とは、溶接部１６によつて固定的に取付けられ
ている。また軸部１４には、通路２７が形成されてお
り、この通路２７は接続部１３に形成された通路２８を
介して管路４に連通している。これらの通路２７，２８
は、軸線方向に直円筒状に形成されている。A recess 22 is formed in the cylindrical portion 18, and an inner screw 23 is engraved on the inner peripheral surface of the recess 22. An outer screw 24 engraved on the outer peripheral surface of the shaft portion 14 is screwed into the inner screw 23 so that the shaft portion 14 is screwed to the connecting portion 13. The connecting portion 13 and the shaft portion 14 are fixedly attached to each other by the welding portion 16. A passage 27 is formed in the shaft portion 14, and the passage 27 communicates with the pipe passage 4 through a passage 28 formed in the connecting portion 13. These passages 27, 28
Is formed into a right cylindrical shape in the axial direction.
軸部１４の前記外ねじ２４が形成された側とは反対側の
端部には、大略円錐台状の傾斜面３０が形成され、この
傾斜面３０に連なり、第１図の右方に突出した先端突部
３１が設けられている。軸部１４の前記傾斜面３０が形
成された部分には、ゴムなどの弾発性材料から成る環状
のＯリング３２が嵌り込む凹溝３３が周方向に全周に亘
つて形成されている。Ｏリング３２は、凹溝３３に装着
された状態で傾斜面３０からその外周面が突出した状態
となつている。先端突部３１には、径孔３４が直径線方
向に貫通して形成される。この径孔３４には前記通路２
７に連通する連通孔３５が連通する。すなわち軸部１４
の先端突部３１から軸線方向内方（第１図の左方）の位
置で側方（第１図の上下方向）に開口して通路２７に連
通して径孔３４が形成される。この径孔３４からさらに
軸線方向内方（第１図の左方）には、前述のＯリング３
２が固定される。A generally frustoconical inclined surface 30 is formed at the end of the shaft portion 14 opposite to the side on which the external screw 24 is formed. The inclined surface 30 is continuous with the inclined surface 30 and projects rightward in FIG. The tip projection 31 is provided. A concave groove 33 into which an annular O-ring 32 made of an elastic material such as rubber is fitted is formed in the portion of the shaft portion 14 where the inclined surface 30 is formed, all around the circumference. The O-ring 32 is mounted in the groove 33, and the outer peripheral surface of the O-ring 32 projects from the inclined surface 30. A radial hole 34 is formed in the tip projection 31 so as to penetrate in the radial direction. The passage 2 is provided in the diameter hole 34.
The communication hole 35 communicating with 7 communicates. That is, the shaft portion 14
A radial hole 34 is formed so as to open laterally (upward and downward in FIG. 1) at a position axially inward (leftward in FIG. 1) from the tip projection 31 and communicate with the passage 27. The O-ring 3 described above is further inward in the axial direction (leftward in FIG. 1) from the radial hole 34.
2 is fixed.
接続口２において、嵌合孔８の先端１１には、通路１２
の開口端１１１が臨む。この開口端１１１は、第１図か
ら明らかなように、先端突部３１の外径よりも小径であ
り、充填工具５の接続口２への装着時における第１図の
状態で、先端突部３１の位置に対応した位置に形成され
る。したがつて第１図の状態では、先端突部３１は、通
路１２の開口端１１１に当接してその開口端１１１を金
属同志の接触によつて略閉塞する。なお高圧力気体源３
から管路４を経て供給された気体は、通路２８，２７お
よび連通孔３５を経て、径孔３４から放出される。At the connection port 2, a passage 12 is provided at the tip 11 of the fitting hole 8.
The open end 111 of the As is apparent from FIG. 1, the opening end 111 has a smaller diameter than the outer diameter of the tip projection 31, and the tip projection is in the state shown in FIG. 1 when the filling tool 5 is attached to the connection port 2. It is formed at a position corresponding to the position 31. Therefore, in the state shown in FIG. 1, the tip projection 31 abuts the open end 111 of the passage 12 and substantially closes the open end 111 by the contact of the metals. High pressure gas source 3
The gas supplied from the pipe through the pipe 4 is discharged from the diameter hole 34 through the passages 28 and 27 and the communication hole 35.
このような軸部１４はフランジ３６を有し、このフラン
ジ３６の直径は、容器弁の接続口２が充填工具５に装着
されていない状態で袋ナット１５に形成された凹所３７
内で軸部１４の軸線方向に沿つて袋ナット１５が変位可
能であるように選ばれている。Such a shaft portion 14 has a flange 36, and the diameter of the flange 36 is a recess 37 formed in the cap nut 15 in a state where the connection port 2 of the container valve is not attached to the filling tool 5.
It is selected so that the cap nut 15 can be displaced along the axial direction of the shaft portion 14.
前記袋ナット１５は、筒部４１と、この筒部４１に連な
る掛合部４２とを有する。筒部４１の前記凹所３７の内
周面には内ねじ４３が刻設されており、この内ねじ４３
に前記接続管７の外周面に刻設された外ねじ４４が螺合
して、袋ナット１５に接続管７が螺着される。筒部４１
には、その直径線方向に挿通する挿通孔４５，４６が形
成される。軸部１４は、前記フランジ３６の第１図の右
方側は前記容器弁の接続口２の嵌合面１０の内径より小
さい内径を有し、前記先端突部３１がシール面９に当接
した状態では軸部１４の外周面と嵌合面１０との間に間
隙４７が形成されている。したがつて径孔３４から放出
された気体は、シール面９と傾斜面３０との間を通つて
間隙４７から嵌合孔８の開放端７１を経て凹所３７内に
放出され、挿通孔４５，４６から外方すなわち大気に放
出することができるように構成されている。前記掛合部
４２には、軸部１４がその軸線方向に挿通する挿通孔３
８が形成され、外周面にはゴムなどの弾発性材料から成
る被覆部材４８が装着されている。The cap nut 15 has a tubular portion 41 and an engaging portion 42 continuous with the tubular portion 41. An inner screw 43 is engraved on the inner peripheral surface of the recess 37 of the tubular portion 41.
The external screw 44 engraved on the outer peripheral surface of the connecting pipe 7 is screwed into the connecting pipe 7, and the connecting pipe 7 is screwed to the cap nut 15. Tubular part 41
Insertion holes 45 and 46 are formed in the diametrically-extending direction. The shaft portion 14 has an inner diameter smaller than the inner diameter of the fitting surface 10 of the connection port 2 of the container valve on the right side of the flange 36 in FIG. 1, and the tip projection 31 contacts the sealing surface 9. In this state, a gap 47 is formed between the outer peripheral surface of the shaft portion 14 and the fitting surface 10. Therefore, the gas released from the diameter hole 34 passes between the seal surface 9 and the inclined surface 30 and is released from the gap 47 through the open end 71 of the fitting hole 8 into the recess 37, and the insertion hole 45. , 46 to the outside, that is, to the atmosphere. The engaging portion 42 has an insertion hole 3 through which the shaft portion 14 is inserted in the axial direction thereof.
8 is formed, and a covering member 48 made of an elastic material such as rubber is attached to the outer peripheral surface.
このような構成を有する充填工具５において、容器弁の
接続口２が螺着されていない状態では、袋ナット１５を
第１図の左方側に変位させると、接続部１３の当接面４
９に袋ナット１５の端面５１が当接してその変位が阻止
される。また袋ナット１５を第１図の右方側に変位させ
た場合には、フランジ３６の当接面５０に端面５２が当
接して、その変位が阻止される。したがつて袋ナット１
５は当接面４９と端面５１とが成す間隔Ｌの範囲内で軸
部１４の軸線方向に変位自在である。In the filling tool 5 having such a configuration, when the cap nut 15 is displaced to the left side in FIG. 1 in a state where the connection port 2 of the container valve is not screwed, the contact surface 4 of the connection portion 13 is changed.
The end surface 51 of the cap nut 15 comes into contact with 9 to prevent the displacement thereof. When the cap nut 15 is displaced to the right side in FIG. 1, the end face 52 abuts on the abutment face 50 of the flange 36, and the displacement is prevented. Therefore, cap nut 1
5 is displaceable in the axial direction of the shaft portion 14 within a range of a distance L formed by the contact surface 49 and the end surface 51.
また筒部４１の内ねじ４３に容器弁の接続口２の外ねじ
４４を螺合した状態で、掛合部４２を締め付けることに
よつて充填工具５に容器弁の接続口２を接続することが
できる。このような充填工具５と容器弁の接続口２とを
接続した状態においては、先端突部３１がシール面９に
当接して、軸部１４の嵌合孔８への嵌合深さが制限され
る。これによつて通路１２は先端突部３１によつて略閉
塞される。Further, the connection port 2 of the container valve can be connected to the filling tool 5 by tightening the engaging part 42 in a state where the outer screw 44 of the connection port 2 of the container valve is screwed into the inner screw 43 of the tubular portion 41. it can. When the filling tool 5 and the connection port 2 of the container valve are connected to each other, the tip projection 31 comes into contact with the sealing surface 9 and the fitting depth of the shaft portion 14 into the fitting hole 8 is limited. To be done. As a result, the passage 12 is substantially closed by the tip projection 31.
高圧力気体源３から通路２８，２７を介して供給された
充填工具５内の気体は、連通孔３５を経て径孔３４から
間隔４７を介してさらに開放端７１から漏洩し、挿通孔
４５，４６から外部に放出される。これによつて低圧力
用圧力容器１の容器弁の接続口２に高圧力気体源３の高
圧力（たとえば３００kgf/cm2）の気体が充填されるこ
とを防止することができる。またこの高圧力気体が挿通
高４５，４６から大気に放出されるときに音が発生し、
接続が誤つていることを知ることができる。The gas in the filling tool 5 supplied from the high-pressure gas source 3 through the passages 28 and 27 leaks from the open hole 71 through the communication hole 35, the radial hole 34, and the gap 47, and the insertion hole 45, It is released from 46 to the outside. As a result, it is possible to prevent the connection port 2 of the container valve of the low pressure pressure container 1 from being filled with the high pressure gas (for example, 300 kgf / cm 2 ) of the high pressure gas source 3. Also, when this high-pressure gas is released into the atmosphere from the insertion heights 45 and 46, sound is generated,
You can know that the connection is incorrect.
第３図は、充填工具５を用いて高圧力用圧力容器６０に
高圧力気体源３を接続した状態を示す断面図である。な
お、前述の実施例と対応する部分には、同一の参照符を
付す。高圧力（たとえば３００kgf/cm2）用圧力容器６
０の容器弁の接続口６１には、充填工具５の先端突部３
１が嵌り込む収納孔６２が形成されており、この収納孔
６２は通路６３に連通している。また容器弁の接続口６
１には、前記充填工具５の軸部１４の先端部が部分的に
嵌り込むことができる嵌合孔６４が形成されている。こ
の嵌合孔６４は、前記収納孔６２に連なり円錐台状に形
成されたシール面６５と、シール面６５に連なる直円筒
状の嵌合面６６とを有する。容器弁の接続口６１の外周
面には外ねじ６７が刻設されており、袋ナット１５の筒
部４１の内周面に刻設された内ねじ４３に螺合する。FIG. 3 is a cross-sectional view showing a state in which the high pressure gas source 3 is connected to the high pressure pressure vessel 60 using the filling tool 5. The parts corresponding to those in the above-described embodiment are designated by the same reference numerals. High pressure (eg 300 kgf / cm 2 ) pressure vessel 6
At the connection port 61 of the container valve 0, the tip projection 3 of the filling tool 5
A storage hole 62 into which 1 is fitted is formed, and the storage hole 62 communicates with the passage 63. Also, the connection port 6 of the container valve
1 is formed with a fitting hole 64 into which the tip of the shaft portion 14 of the filling tool 5 can be partially fitted. The fitting hole 64 has a sealing surface 65 connected to the storage hole 62 and formed in a truncated cone shape, and a right cylindrical fitting surface 66 connected to the sealing surface 65. An outer screw 67 is engraved on the outer peripheral surface of the connection port 61 of the container valve, and is screwed onto the inner screw 43 engraved on the inner peripheral surface of the tubular portion 41 of the cap nut 15.
接続口６１において、嵌合孔６４の先端には、前述の収
納孔６２が形成される。この収納孔６２は、先端突部３
１が収納可能である。収納孔６２は、通路６３に連通す
る。この収納孔６２の内径は、第３図から明らかなよう
に、軸部１４の径孔３４が形成された部分、すなわちこ
の実施例では先端突部３１の外径を越える値に選ばれ、
したがつて径孔３４からの気体は、収納孔６２から通路
６３に供給されることができる。In the connection port 61, the accommodation hole 62 is formed at the tip of the fitting hole 64. The storage hole 62 is formed in the tip projection 3
1 can be stored. The storage hole 62 communicates with the passage 63. As is apparent from FIG. 3, the inner diameter of the housing hole 62 is selected to be larger than the outer diameter of the portion of the shaft portion 14 where the diameter hole 34 is formed, that is, the tip projection 31 in this embodiment.
Therefore, the gas from the diameter hole 34 can be supplied to the passage 63 from the storage hole 62.
このようにして、第３図に示されるように、高圧力気体
源３に接続された充填工具５が接続口６１に接続された
状態では、前記先端突部３１が収納孔６２内に収納され
た状態で、Ｏリング３２がシール面６５に気密に当接し
た状態となつている。したがつて高圧力気体源３から供
給された高圧力（（たとえば３００kgf/cm2）の気体が
通路２８，２７および連通孔３５を経て径孔３４から収
納孔６２内に放出され、通路６３を経て容器弁から高圧
力用圧力容器６２内の充填空間に供給することができ
る。In this way, as shown in FIG. 3, when the filling tool 5 connected to the high pressure gas source 3 is connected to the connection port 61, the tip projection 31 is stored in the storage hole 62. In this state, the O-ring 32 is in airtight contact with the sealing surface 65. Therefore, the high-pressure (for example, 300 kgf / cm 2 ) gas supplied from the high-pressure gas source 3 is discharged from the diameter hole 34 into the accommodation hole 62 through the passages 28 and 27 and the communication hole 35, and the passage 63 is discharged. Then, it can be supplied from the container valve to the filling space in the high-pressure pressure container 62.
第４図は、充填工具５ａを用いて低圧力用圧力容器１に
低圧力気体源３ａを接続した状態を示す断面図である。
なお、前述の実施例と対応する部分には、同一の参照符
を用い、または同一の数字に添え字ａを付す。本実施例
の充填工具５ａには前述した先端突部３１が形成されて
いない。軸部１４ａの先端部１２１の端面１２２には、
連通孔３５ａが開口する。したがつて低圧力気体源３ａ
から供給された低圧力（たとえば１５０kgf/cm2）の気
体は、通路１９，２８，２７ａを経て連通孔３５ａから
嵌合孔８内に放出される。したがつてＯリング３２ａが
シール面９に気密に当接した状態で、通路１２を経て容
器弁から低圧力用圧力容器１内の充填空間に低圧力気体
を供給して充填することができる。FIG. 4 is a sectional view showing a state in which the low pressure gas source 3a is connected to the low pressure pressure vessel 1 using the filling tool 5a.
In addition, the same reference numerals are used for the portions corresponding to the above-described embodiments, or the same numerals are attached with a subscript a. The above-mentioned tip projection 31 is not formed in the filling tool 5a of this embodiment. On the end surface 122 of the tip portion 121 of the shaft portion 14a,
The communication hole 35a opens. Therefore, low pressure gas source 3a
The low-pressure gas (for example, 150 kgf / cm 2 ) supplied from the chamber is discharged into the fitting hole 8 from the communication hole 35a through the passages 19, 28 and 27a. Therefore, in the state where the O-ring 32a is in airtight contact with the sealing surface 9, the low-pressure gas can be supplied and filled from the container valve to the filling space in the low-pressure pressure container 1 through the passage 12.
第５図は、充填工具５ａを用いて高圧力用圧力容器６０
に低圧力気体源３ａを接続した状態を示す断面図であ
る。なお、前述の実施例と対応する部分には、同一の参
照符を用い、または同一の添え字ａを付す。前述の充填
工具５ａを用いて、低圧力気体源３ａから供給された低
圧力の気体は、通路１９，２８，２７ａを経て連通孔３
５ａから収納孔６２内に放出される。Ｏリング３２ａが
シール面６５に気密に当接した状態で、通路６３を経て
容器弁から高圧力用圧力容器６０内の充填空間に低圧力
気体を供給して充填することができる。こうして高圧力
用圧力容器６０に低圧力気体を充填した場合であつて
も、呼吸器に接続して吸気用気体として使用することが
可能である。FIG. 5 shows a pressure vessel 60 for high pressure using the filling tool 5a.
It is sectional drawing which shows the state which connected the low pressure gas source 3a to. The same reference numerals are used or the same subscript a is added to the portions corresponding to the above-described embodiments. The low-pressure gas supplied from the low-pressure gas source 3a using the above-described filling tool 5a passes through the passages 19, 28, 27a and the communication hole 3
5a is discharged into the storage hole 62. With the O-ring 32a in airtight contact with the sealing surface 65, low-pressure gas can be supplied from the container valve through the passage 63 to the filling space in the high-pressure container 60 for low-pressure gas filling. Thus, even when the high-pressure pressure container 60 is filled with the low-pressure gas, it can be connected to the respirator and used as the inhalation gas.
考案の効果 本考案によれば、高圧力気体源３からの高圧力気体は、
第１図のように低圧力用圧力容器１には供給することが
できず、このとき挿通孔４５，４６から高圧力気体が大
気放出されて音が発生し、このことが判り、また第３図
のように高圧力用圧力容器６０にのみ供給して充填する
ことができる。また低圧力気体源３ａからの低圧力気体
は、第４図のように低圧力用圧力容器１に供給すること
ができ、また第５図のように高圧力用圧力容器６０に供
給することができる。このようにして高圧力気体が、低
圧力用圧力容器１に充填することを防止することがで
き、安全性の向上を図ることができる。Effect of the Invention According to the present invention, the high pressure gas from the high pressure gas source 3 is
As shown in FIG. 1, it cannot be supplied to the low pressure pressure vessel 1, and at this time, high pressure gas is emitted into the atmosphere from the insertion holes 45 and 46 to generate sound, which is understood. As shown in the figure, it is possible to supply and fill only the high pressure pressure vessel 60. The low-pressure gas from the low-pressure gas source 3a can be supplied to the low-pressure pressure vessel 1 as shown in FIG. 4 and can be supplied to the high-pressure pressure vessel 60 as shown in FIG. it can. In this way, it is possible to prevent the high-pressure gas from filling the low-pressure pressure container 1 and improve the safety.
第１図は本考案の一実施例の断面図、第２図は第１図の
切断面線II-IIから見た断面図、第３図は充填工具５を
用いて高圧力用圧力容器６０に高圧力気体源３を接続し
た状態を示す断面図、第４図は充填工具５を用いて低圧
力用圧力容器１に低圧力気体源３ａを接続した状態を示
す断面図、第５図は充填工具５ａを用いて高圧力用圧力
容器６０に低圧力気体源３ａを接続した状態を示す断面
図である。 １…低圧力用圧力容器、２，６１…容器弁の接続口、３
…高圧力気体源、３ａ…低圧力気体源、４…管路、５，
５ａ…充填工具、６…管継手、７…接続管、８，６４…
嵌合孔、９，６５…シール面、１０，６６…嵌合面、１
２，６３…通路、１４，１４ａ…軸部、１５，１５ａ…
袋ナット、２７，２７ａ，２８，２９…通路、３０…傾
斜面、３１…先端突部、３２，３２ａ…Ｏリング、３４
…径孔、６０…高圧力用圧力容器、６２…収納孔、１１
１…開口端、１２１…先端部、１２２…端面1 is a sectional view of an embodiment of the present invention, FIG. 2 is a sectional view taken along section line II-II in FIG. 1, and FIG. 3 is a pressure vessel 60 for high pressure using a filling tool 5. Is a cross-sectional view showing a state in which a high-pressure gas source 3 is connected to FIG. 4, FIG. 4 is a cross-sectional view showing a state in which a low-pressure gas source 3a is connected to a low-pressure pressure container 1 using a filling tool 5, and FIG. It is sectional drawing which shows the state which connected the low pressure gas source 3a to the high pressure pressure container 60 using the filling tool 5a. 1 ... Low pressure pressure vessel, 2, 61 ... Container valve connection port, 3
... high pressure gas source, 3a ... low pressure gas source, 4 ... pipe, 5,
5a ... Filling tool, 6 ... Pipe joint, 7 ... Connection pipe, 8, 64 ...
Fitting hole, 9,65 ... Sealing surface, 10, 66 ... Fitting surface, 1
2, 63 ... Passage, 14, 14a ... Shaft, 15, 15a ...
Cap nut, 27, 27a, 28, 29 ... Passage, 30 ... Inclined surface, 31 ... Tip protrusion, 32, 32a ... O-ring, 34
... Diameter hole, 60 ... High pressure pressure vessel, 62 ... Storage hole, 11
1 ... Open end, 121 ... Tip part, 122 ... End face
Claims (1)
填工具５を、その第１軸部１４が低圧力用圧力容器１の
第１容器弁の第１接続口２に形成された第１嵌合孔８
と、高圧力用圧力容器６０の第２容器弁の第２接続口６
１に形成された第２嵌合孔６４とに嵌合して、第１接続
手段１５によつて第１および第２接続口２，６１に着脱
可能とし、 （ｂ）低圧力気体源３ａに接続される第２充填工具５ａ
を、その第２軸部１４ａが第１嵌合孔８と、第２嵌合孔
６４とに嵌合して、第２接続手段１５ａによつて着脱可
能とし、 （ｃ）第１軸部１４には、高圧力気体を供給する第１通
路２７が形成され、 第１軸部１４の先端突部３１から軸線方向内方の位置で
側方に開口し第１通路２７に連通した径孔３４が形成さ
れ、 その径孔３４からさらに軸線方向内方に環状の第１シー
ル部材３２が固定され、 （ｄ）第１接続手段１５には、第１容器弁の第２接続口
２に接続されるとき第１嵌合孔８の開放端７１を大気に
連通する挿通孔４５，４６が形成され、 （ｅ）第２軸部１４ａには、低圧力気体を供給する第２
通路２７ａが形成され、 第２軸部１４ａの先端部１２１の端面１２２に開口し、
かつ第２通路２７ａに連通した連通孔３５ａが形成さ
れ、 前記端面１２２から軸線方向内方に環状の第２シール部
材３２ａが固定され、 （ｆ）第１接続口２において、第１嵌合孔８の先端１１
には、第１容器弁から低圧力用圧力容器１内の充填空間
に連通する第３通路１２の開口端１１１が臨み、 この開口端１１１は、先端突部３１の外径よりも小径で
あり、第１充填工具５の第１接続口２への装着時におけ
る先端突部３１の位置に対応した位置に形成され、 第１嵌合孔８内には第１シール面９が形成され、 （ｇ）第２接続口６１において、第２嵌合孔６４の先端
に、収納孔６２が形成され、 この収納孔６２は、 先端突部３１が収納可能であり、 かつ第２容器弁から高圧力用圧力容器６０内の充填空間
に連通する第４通路６３に連通し、 かつ第１軸部１４の前記径孔３４が形成された部分の外
径を越える内径を有し、 第２嵌合孔６４内には第２シール面６５が形成され、 （ｈ）第１充填工具５を、第１軸部１４が第１嵌合孔８
に嵌合して第１接続手段１５によつて第１接続口２に装
着したとき、先端突部３１が第３通路１２の開口端１１
１に当接してその開口端１１１を略閉塞し、 （ｉ）第１充填工具５を、第１軸部１４が第２嵌合孔６
４に嵌合して第１接続手段１５によつて第２接続口６１
に装着したとき、第１シール部材３２が第２シール面６
５に当接し、 （ｊ）第２充填工具５ａを、第２軸部１４ａが第１嵌合
孔８に嵌合して第２接続手段１５ａによつて第１接続口
２に装着したとき、第２シール部材３２ａが第１シール
面９に当接し、 （ｋ）第２充填工具５ａを、第２軸部１４ａが第２嵌合
孔６４に嵌合して第２接続手段１５ａによつて第２接続
口６１に装着したとき、第２シール部材３２ａが第２シ
ール面６５に当接することを特徴とする圧力容器の充填
装置。(A) A first filling tool 5 connected to a high pressure gas source 3 has a first shaft portion 14 formed at a first connection port 2 of a first container valve of a low pressure pressure container 1. First fitting hole 8
And the second connection port 6 of the second container valve of the high-pressure pressure container 60.
It is fitted into the second fitting hole 64 formed in No. 1 and is attachable to and detachable from the first and second connection ports 2 and 61 by the first connecting means 15, (b) The low pressure gas source 3a Second filling tool 5a connected
The second shaft portion 14a is fitted into the first fitting hole 8 and the second fitting hole 64, and is detachable by the second connecting means 15a. (C) The first shaft portion 14 A first passage 27 for supplying a high-pressure gas is formed therein, and a diameter hole 34 that opens laterally at a position axially inward from the tip projection 31 of the first shaft portion 14 and communicates with the first passage 27. Is formed, and the annular first seal member 32 is fixed further inward in the axial direction from the diameter hole 34. (d) The first connection means 15 is connected to the second connection port 2 of the first container valve. Insertion holes 45 and 46 that communicate the open end 71 of the first fitting hole 8 with the atmosphere when (e) the second shaft portion 14a is supplied with a low pressure gas
A passage 27a is formed and opens at the end surface 122 of the tip 121 of the second shaft portion 14a,
A communication hole 35a communicating with the second passage 27a is formed, an annular second seal member 32a is fixed inward in the axial direction from the end face 122, and (f) a first fitting hole at the first connection port 2. Tip 11 of 8
Faces the opening end 111 of the third passage 12 that communicates with the filling space in the low-pressure pressure container 1 from the first container valve, and the opening end 111 has a diameter smaller than the outer diameter of the tip projection 31. , A position corresponding to the position of the tip projection 31 when the first filling tool 5 is attached to the first connection port 2, and a first sealing surface 9 is formed in the first fitting hole 8. g) In the second connection port 61, a storage hole 62 is formed at the tip of the second fitting hole 64. The storage hole 62 is capable of storing the tip projection 31 and has a high pressure from the second container valve. A second fitting hole that communicates with a fourth passage 63 that communicates with a filling space in the pressure vessel 60 and has an inner diameter that exceeds the outer diameter of the portion of the first shaft portion 14 in which the diameter hole 34 is formed. A second sealing surface 65 is formed in 64, and (h) the first filling tool 5 has the first shaft portion 14 with the first fitting hole 8
When fitted to the first connecting port 2 by the first connecting means 15, the tip projection 31 causes the open end 11 of the third passage 12.
1, the opening end 111 is substantially closed, and (i) the first filling tool 5 has the first shaft portion 14 and the second fitting hole 6
4 and the second connecting port 61 by the first connecting means 15.
When the first seal member 32 is attached to the second seal surface 6
5), and (j) when the second shaft portion 14a is fitted into the first fitting hole 8 and the second filling tool 5a is attached to the first connection port 2 by the second connecting means 15a, The second seal member 32a comes into contact with the first seal surface 9, and (k) the second filling tool 5a is fitted into the second fitting hole 64 by the second shaft portion 14a. The pressure vessel filling device, wherein the second sealing member 32a abuts on the second sealing surface 65 when attached to the second connection port 61.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988004101U JPH0616227Y2 (en) | 1988-01-16 | 1988-01-16 | Pressure vessel filling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988004101U JPH0616227Y2 (en) | 1988-01-16 | 1988-01-16 | Pressure vessel filling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01108500U JPH01108500U (en) | 1989-07-21 |
| JPH0616227Y2 true JPH0616227Y2 (en) | 1994-04-27 |
Family
ID=31206312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988004101U Expired - Lifetime JPH0616227Y2 (en) | 1988-01-16 | 1988-01-16 | Pressure vessel filling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0616227Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016180462A (en) * | 2015-03-24 | 2016-10-13 | 株式会社隆起工業 | Piping joint, piping for high pressure gas, welding method, method for manufacturing high pressure gas device, and high pressure gas device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2602046Y2 (en) * | 1992-03-31 | 1999-12-20 | 日本酸素株式会社 | Connection pipe |
| JP2015086957A (en) * | 2013-10-31 | 2015-05-07 | 大陽日酸株式会社 | Joint and gas filling device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571351A (en) * | 1980-06-04 | 1982-01-06 | Kawajiyuu Bousai Kogyo Kk | Respiratory appliance and its filling tool |
| JPS6217306Y2 (en) * | 1980-07-21 | 1987-05-02 | ||
| JPS5836958U (en) * | 1981-09-07 | 1983-03-10 | 小林 春市 | Shutoff rod breakage preventer |
-
1988
- 1988-01-16 JP JP1988004101U patent/JPH0616227Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016180462A (en) * | 2015-03-24 | 2016-10-13 | 株式会社隆起工業 | Piping joint, piping for high pressure gas, welding method, method for manufacturing high pressure gas device, and high pressure gas device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01108500U (en) | 1989-07-21 |
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