JP2789018B2 - High pressure gas container valve - Google Patents
High pressure gas container valveInfo
- Publication number
- JP2789018B2 JP2789018B2 JP6027844A JP2784494A JP2789018B2 JP 2789018 B2 JP2789018 B2 JP 2789018B2 JP 6027844 A JP6027844 A JP 6027844A JP 2784494 A JP2784494 A JP 2784494A JP 2789018 B2 JP2789018 B2 JP 2789018B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- auxiliary valve
- gas passage
- auxiliary
- container
- 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 - Fee Related
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、液化塩素，液化アンモ
ニウム，液化炭酸ガス等の液化ガスや半導体の製造に使
用される材料ガス（例えばシラン，ホスフィン，アルシ
ン，ジボラン等）等を収容する高圧ガス容器の口部に取
り付けられる高圧ガス容器用弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-pressure liquid containing a liquefied gas such as liquefied chlorine, liquefied ammonium, or liquefied carbon dioxide, or a material gas (for example, silane, phosphine, arsine, diborane, etc.) used in the production of semiconductors. The present invention relates to a high-pressure gas container valve attached to an opening of a gas container.
【０００２】[0002]
【従来の技術】この種の高圧ガス容器用弁は、一般に、
弁箱に、ガス管を連結しうる連結部及び高圧ガス容器の
口部にねじ込み固着する螺子部を設け、弁箱内に形成し
た弁操作室に、連結部を貫通する第１ガス通路及び螺子
部を直線状に貫通する第２ガス通路の基端を開口させる
と共に、第２ガス通路の基端開口部に形成した弁座に当
接して両通路間を遮断閉塞させる閉弁位置と該弁座から
離間して両通路間を連通開放させる開弁位置とに亘って
第２ガス通路の軸線方向に進退操作される弁体を内装し
てなる。2. Description of the Related Art A valve for a high-pressure gas container of this kind is generally
A connection portion that can connect a gas pipe and a screw portion that is screwed and fixed to an opening of a high-pressure gas container are provided in the valve box, and a first gas passage and a screw penetrating the connection portion are provided in a valve operation chamber formed in the valve box. A valve closing position for opening a base end of a second gas passage which penetrates the portion linearly and abutting against a valve seat formed at a base end opening of the second gas passage to shut off and close between the two passages; A valve body is provided that is operated to advance and retreat in the axial direction of the second gas passage over a valve opening position that separates from the seat and opens the communication between the two passages.
【０００３】[0003]
【発明が解決しようとする課題】この高圧ガス容器用弁
は、その螺子部を容器の口部にねじ込むことによって高
圧ガス容器に装着されるが、容器口部へのねじ込み量が
JIS B 8246等により定められており、少なくとも螺子部
の基端側が容器口部からはみ出した形態で容器に装着さ
れている。This high-pressure gas container valve is mounted on the high-pressure gas container by screwing its screw portion into the opening of the container, but the amount of screwing into the container opening is reduced.
It is defined by JIS B 8246 or the like, and is attached to the container in a form in which at least the proximal end of the screw portion protrudes from the container mouth.
【０００４】したがって、容器が転倒する等により、弁
に衝撃が加わった場合、衝撃応力が強度的に弱い箇所に
集中して、その箇所が折損する虞れがある。すなわち、
螺子部が弁箱から突出しており且つ螺子部の先端側部分
が容器口部に装着されている構造上、弁に衝撃が加わる
と、螺子部の基端箇所が折損する。そして、このような
箇所で折損すると、弁としての機能は当然に損なわれ、
容器内のガスが噴出し、甚だ危険である。特に、容器内
のガスが半導体の製造に使用される材料ガス（例えばシ
ラン，ホスフィン，アルシン，ジボラン等）のような可
燃性猛毒ガスである場合には、大事故になる。[0004] Therefore, when an impact is applied to the valve due to a fall of the container or the like, there is a possibility that the impact stress is concentrated on a portion having a weak strength and the portion is broken. That is,
Due to the structure in which the screw portion protrudes from the valve box and the distal end portion of the screw portion is attached to the container opening, when a shock is applied to the valve, the base end portion of the screw portion is broken. And if it breaks in such a place, the function as a valve will naturally be lost,
The gas in the container blows out, which is extremely dangerous. In particular, if the gas in the container is a highly flammable toxic gas such as a material gas used in the manufacture of semiconductors (for example, silane, phosphine, arsine, diborane, etc.), a serious accident will occur.
【０００５】ところで、高圧ガス容器を運搬する場合等
にあっては、容器が転倒したようなときにも、上記した
折損事故が生じないように、容器口部に弁全体を囲繞す
る保護キャップを取り付けておくことが義務付けられて
いる。しかし、弁の連結部にガス管を脱着させる場合
（例えば、容器を交換する場合や空容器にガスを充填さ
せる場合）には、かかる作業を保護キャップを外した状
態で行う以上、上記した折損事故を完全に防止すること
はできない。特に、使用済の容器を新たな容器に交換さ
せる場合、ガス管から外した使用済の容器が作業者の意
識外に置かれ易く、使用済の容器を作業者が誤って倒し
てしまう虞れが強い。なお、使用済の容器と雖も、ある
程度のガスが残存しており、容器転倒により上記した折
損事故が生じると、ガスが噴出することになる。When a high-pressure gas container is transported or the like, a protective cap surrounding the entire valve is provided at the container opening so that the above-mentioned breakage accident does not occur even when the container falls down. It is required to be attached. However, when the gas pipe is attached to or detached from the connection portion of the valve (for example, when replacing the container or filling the empty container with gas), the above-described operation is performed with the protective cap removed. Accidents cannot be completely prevented. In particular, when replacing a used container with a new container, the used container removed from the gas pipe is easily put out of the consciousness of the worker, and the worker may accidentally knock down the used container. Is strong. It should be noted that a certain amount of gas remains even in spite of the used container, and if the above-mentioned breakage accident occurs due to the falling of the container, the gas will be ejected.
【０００６】本発明は、このような点に鑑みてなされた
もので、容器の転倒等により弁が折損した場合にも、ガ
ス噴出を確実に防止でき、安全対策上、万全を期すこと
ができる高圧ガス容器用弁を提供するものである。The present invention has been made in view of the above points, and even when a valve is broken due to a fall of a container or the like, gas can be reliably prevented from being blown out, and safety can be ensured. A high pressure gas container valve is provided.
【０００７】[0007]
【課題を解決するための手段】本発明は、弁箱に、ガス
管を連結しうる連結部及び高圧ガス容器の口部にねじ込
み固着する螺子部を設け、弁箱内に形成した弁操作室
に、連結部を貫通する第１ガス通路及び螺子部を直線状
に貫通する第２ガス通路の基端を開口させると共に、第
２ガス通路の基端開口部に形成した弁座に当接して両通
路間を遮断閉塞させる閉弁位置と該弁座から離間して両
通路間を連通開放させる開弁位置とに亘って第２ガス通
路の軸線方向に進退操作される弁体を内装してある高圧
ガス容器用弁であって、高圧ガス容器の口部にねじ込み
固着された状態で衝撃が加わったときに螺子部の基端箇
所（Ａ−Ａ）で折損する高圧ガス容器用弁において、上
記の目的を達成すべく、特に、次のように構成しておく
ことを提案するものである。 すなわち、高圧ガス容器の
口部にねじ込まれた螺子部の先端部分には、第２ガス通
路の一部を拡大させてなる補助弁室が形成されている。
この補助弁室には、前記弁座に直対向して形成された補
助弁座に当接したときにのみ第２ガス通路を遮断閉塞し
うる補助弁体が、第２ガス通路の軸線方向に進退自在に
内装されていると共に、この補助弁体を前記弁体に向か
う方向であって補助弁座に当接する方向に附勢させるコ
イルバネが内装されている。 弁体と補助弁体とは、第２
ガス通路にこれを閉塞することなく進退自在に挿通させ
た非伸縮性の連結杆を介して、弁体が弁開位置に位置さ
れたときに補助弁体がコイルバネに抗して補助弁座から
離間した位置に保持されるように、連動連結されてい
る。 弁体と補助弁体との連結杆を介しての連動連結は、
連結杆の形状，材質を螺子部と共に折損されるものとす
ることによって又は連結杆を両弁体の少なくとも一方に
固着しないことによって、螺子部が基端箇所で折損した
ときにおいて解除されるように構成されており、この連
動連結が解除されると、補助弁体がコイルバネにより補
助弁座に当接されるようになっている。 SUMMARY OF THE INVENTION The present invention relates to a valve box,
Screwed into the connection part that can connect the pipe and the mouth of the high-pressure gas container
A valve operation chamber formed in the valve box with a screw portion
In addition, the first gas passage and the screw portion penetrating the connecting portion are linearly formed.
The base end of the second gas passage penetrating through the
2 Abuts the valve seat formed at the base end of the gas passage
A valve closing position for blocking and closing the road and
The second gas passage extends over a valve opening position for opening the communication between the passages.
High pressure with a valve body that moves in the axial direction of the road
A gas container valve that is screwed into the mouth of a high-pressure gas container.
When impact is applied in the fixed state, the proximal end of the screw
In the high pressure gas container valve that breaks at the location (AA),
In order to achieve the above objectives, in particular, the following configuration
It suggests that. That is, the high pressure gas container
A second gas passage is provided at the tip of the screw portion screwed into the mouth.
An auxiliary valve chamber is formed by enlarging a part of the passage.
The auxiliary valve chamber has an auxiliary valve formed directly opposite the valve seat.
The second gas passage is closed and closed only when it comes into contact with the auxiliary valve seat.
The auxiliary valve element can move forward and backward in the axial direction of the second gas passage.
The auxiliary valve element is installed inside the
In the direction that comes into contact with the auxiliary valve seat.
The ilbane is decorated. The valve element and the auxiliary valve element
It is inserted into the gas passage so that it can move back and forth without blocking.
The valve is moved to the valve open position via the non-stretchable connecting rod.
When the auxiliary valve is disengaged from the auxiliary valve seat against the coil spring
Linked and linked so that they are
You. The interlocking connection between the valve body and the auxiliary valve body via the connecting rod
The shape and material of the connecting rod shall be broken together with the screw part.
Or by connecting the connecting rod to at least one of the two
The screw part was broken at the base end by not sticking
At this time.
When the dynamic connection is released, the auxiliary valve element is supplemented by a coil spring.
It comes into contact with the auxiliary valve seat.
【０００８】[0008]
【作用】弁体が弁開位置に位置されたときは、弁体と補
助弁体との間に介挿された連結杆により、補助弁体はコ
イルバネに抗して補助弁座から離間した位置に保持され
る。そして、弁体を弁開位置から弁閉位置に操作させる
と、連結杆により、補助弁体はコイルバネに抗して補助
弁座から更に離間する位置へと移動される。したがっ
て、弁体の位置に拘わらず、補助弁体は常に補助弁座か
ら離間した状態にあり、補助弁体は弁体による弁機能を
何ら妨げることがない。When the valve body is located at the valve open position, the auxiliary valve body is separated from the auxiliary valve seat against the coil spring by a connecting rod inserted between the valve body and the auxiliary valve body. Is held. When the valve element is operated from the valve open position to the valve closed position, the connecting valve moves the auxiliary valve element to a position further away from the auxiliary valve seat against the coil spring. Therefore, regardless of the position of the valve body, the auxiliary valve body is always separated from the auxiliary valve seat, and the auxiliary valve body does not hinder the valve function of the valve body at all.
【０００９】而して、容器の転倒等により弁に衝撃が加
わって、螺子部がその基端箇所で折損すると、連結杆を
介しての弁体と補助弁体との連結が解除される。この連
結が解除されると、補助弁体はコイルバネにより補助弁
座に当接され、その状態に附勢保持される。その結果、
補助弁体により容器口部側に残存する第２ガス通路は遮
断閉塞され、容器からのガス噴出は阻止される。[0009] If the screw is broken at the base end of the valve due to an impact applied to the valve due to the fall of the container or the like, the connection between the valve body and the auxiliary valve body via the connecting rod is released. When the connection is released, the auxiliary valve body is brought into contact with the auxiliary valve seat by the coil spring and is urged and held in that state. as a result,
The second gas passage remaining on the container mouth side is closed and closed by the auxiliary valve body, and gas ejection from the container is prevented.
【００１０】[0010]
【実施例】以下、本発明の構成を図１〜図５に示す実施
例に基づいて具体的に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be specifically described below with reference to the embodiments shown in FIGS.
【００１１】図１において、１は上面部に筒状の口部３
を突設した高圧ガス容器であり、２は容器口部３に装着
された高圧ガス容器用弁である。In FIG. 1, reference numeral 1 denotes a cylindrical opening 3 on the upper surface.
Is a high-pressure gas container protruding therefrom, and 2 is a high-pressure gas container valve mounted on the container mouth 3.
【００１２】高圧ガス容器１の口部３には、図１に鎖線
図示する如く、弁２を囲繞する保護キャップ４を螺着す
るための螺子筒５が嵌着されている。なお、保護キャッ
プ４は厚肉の金属製のもので、容器１の運搬時等におい
て弁２が破損しないように保護するものである。A screw cylinder 5 for screwing a protective cap 4 surrounding the valve 2 is fitted in the mouth 3 of the high-pressure gas container 1 as shown by a chain line in FIG. The protective cap 4 is made of a thick metal and protects the valve 2 from being damaged during transportation of the container 1 or the like.
【００１３】高圧ガス容器用弁２は、図１及び図２に示
す如く、ガス取出管，ガス補充管等のガス管７を連結す
るための連結部８及び容器口部３にねじ込み固着される
テーパネジ状の螺子部９を突設してなる弁箱６を具備し
てなる。弁箱６内には、連結部８を貫通する第１ガス通
路１０及び螺子部９を直線状に貫通する第２ガス通路１
１の基端を開口させた弁操作室１２が形成されている。
なお、弁箱６には、安全対策上、第２ガス通路１１に連
通するガス通路１３が形成されており、このガス通路１
３は安全ナット１４等により閉塞されている。As shown in FIGS. 1 and 2, the high-pressure gas container valve 2 is screwed and fixed to a connecting portion 8 for connecting a gas pipe 7 such as a gas take-out tube and a gas replenishing tube and the container opening 3. The valve case 6 includes a tapered screw-shaped screw portion 9 protruding therefrom. A first gas passage 10 penetrating the connecting portion 8 and a second gas passage 1 linearly penetrating the screw portion 9 in the valve box 6.
A valve operation chamber 12 having an open base end is formed.
In addition, a gas passage 13 communicating with the second gas passage 11 is formed in the valve box 6 for safety measures.
3 is closed by a safety nut 14 or the like.
【００１４】弁操作室１２には、図１及び図２に示す如
く、第２ガス通路１１の基端開口部に形成した弁座１５
に当接して両通路１０，１１間を遮断閉塞させる閉弁位
置（図１に示す位置）と該弁座１５から離間して両通路
１０，１１間を連通開放させる開弁位置（図２に示す位
置）とに亘って第２ガス通路１１の軸線方向つまり上下
方向に進退操作される弁体１６が内装されている。弁体
１６は、弁操作室１２内を上下動自在であり且つコイル
バネ１７により上方に附勢されたリテーナ１８の下端部
に固着されており、弁箱６に螺合させた操作体１９を上
下方向に進退操作することにより、閉弁位置と開弁位置
とに亘って進退されるようになっている。また、リテー
ナ１８と操作体１９との間には金属製のダイヤフラム２
０が介挿されていて、このダイヤフラム２０により弁操
作室１２の上面側を密閉させている。As shown in FIGS. 1 and 2, a valve seat 15 formed at a base end of the second gas passage 11 is provided in the valve operation chamber 12.
A valve-closing position (the position shown in FIG. 1) that abuts on the two passages 10 and 11 to shut off and closes, and a valve-opening position that separates from the valve seat 15 and opens the communication between the two passages 10 and 11 (see FIG. 2). (Position shown), the valve body 16 which is operated to advance and retreat in the axial direction of the second gas passage 11, that is, in the up-and-down direction. The valve body 16 is movable up and down in the valve operation chamber 12 and is fixed to a lower end of a retainer 18 urged upward by a coil spring 17 to move an operation body 19 screwed to the valve box 6 up and down. By performing the forward / backward operation in the direction, the forward / backward movement is performed over the valve closing position and the valve opening position. Further, a metal diaphragm 2 is provided between the retainer 18 and the operation body 19.
0 is interposed, and the upper surface side of the valve operation chamber 12 is sealed by the diaphragm 20.
【００１５】容器口部３にねじ込まれた螺子部９の先端
部分には、図１及び図２に示す如く、第２ガス通路１１
の一部を拡大してなる補助弁室２１が形成されている。
この実施例では、第２ガス通路１１が横断面円形状をな
すものとされているが、補助弁室２１は第２ガス通路１
１の下端部を同心状に拡径させてなる。As shown in FIGS. 1 and 2, a second gas passage 11 is provided at the tip end of the screw portion 9 screwed into the container mouth portion 3.
An auxiliary valve chamber 21 is formed by enlarging a part of the auxiliary valve chamber.
In this embodiment, the second gas passage 11 has a circular cross section, but the auxiliary valve chamber 21 has the second gas passage 1.
1 has a lower end portion concentrically enlarged in diameter.
【００１６】この補助弁室２１の上面には、図１及び図
２に示す如く、前記弁座１５の直対向する環状の補助弁
座２２が形成されていると共に、補助弁体２３及びコイ
ルバネ２４が内装されている。As shown in FIG. 1 and FIG. 2, an annular auxiliary valve seat 22 is formed on the upper surface of the auxiliary valve chamber 21 so as to directly oppose the valve seat 15, and an auxiliary valve body 23 and a coil spring 24 are formed. Is decorated.
【００１７】補助弁体２３は、図１〜図４に示す如く、
補助弁室２１よりも若干小径とされた、ステンレス鋼等
の金属材又はナイロン６６，ダイフロン，ベークライト
等の樹脂材からなる円盤状のもので、補助弁座２２に当
接したときにのみ第２ガス通路１１を遮断閉塞するよう
に、補助弁室２１に上下動自在に内装されている。すな
わち、補助弁体２３の周縁部には複数の切欠２３ａ…が
形成されていて、補助弁体２３をこれが補助弁座２２に
当接する補助弁閉位置（図４に示す位置）に位置させた
ときには、切欠２３ａ…が補助弁座２２の内径領域に食
み出さず、第２ガス通路１１を遮蔽閉塞し、補助弁体２
３を補助弁座２２から離間させた状態（例えば、図１又
は図２に示す状態）では、切欠２３ａ…を介して補助弁
室２１を含む第２ガス通路１１が開放されるようになっ
ている。As shown in FIGS. 1 to 4, the auxiliary valve body 23
A disk made of a metal material such as stainless steel or a resin material such as nylon 66, Diflon, or Bakelite, having a diameter slightly smaller than that of the auxiliary valve chamber 21. The auxiliary valve chamber 21 is vertically movably mounted so as to close and close the gas passage 11. That is, a plurality of notches 23a are formed in the peripheral portion of the auxiliary valve element 23, and the auxiliary valve element 23 is positioned at the auxiliary valve closing position (the position shown in FIG. 4) where the auxiliary valve element 23 contacts the auxiliary valve seat 22. Sometimes, the notches 23a do not protrude into the inner diameter region of the auxiliary valve seat 22, block and close the second gas passage 11, and
3 is separated from the auxiliary valve seat 22 (for example, the state shown in FIG. 1 or FIG. 2), the second gas passage 11 including the auxiliary valve chamber 21 is opened via the notches 23a. I have.
【００１８】コイルバネ２４は、図１〜図３に示す如
く、補助弁体２３と補助弁室２１の下端部に螺着された
環状のバネ受け板２５との間に介挿されていて、補助弁
体２３を弁座１５に向かう方向であって補助弁座２２に
当接する方向に附勢する。なお、コイルバネ２４及びバ
ネ受け板２５はステンレス鋼製のものとされている。と
ころで、コイルバネ２４は、後述する連結杆２６及び補
助弁体２３を介して弁体１６を前記コイルバネ１７と同
一方向（上方向）に附勢するものであるから、両コイル
バネ１７，２４のバネ係数は、弁体１６及び補助弁体２
３の機能を勘案して設定しておく必要がある。つまり、
両コイルバネ１７，２４による弁体１６の附勢力が必要
以上に大きくならず且つコイルバネ２４による補助弁体
２３の附勢力が必要以上に小さくならないように設定し
ておくことが好ましい。The coil spring 24 is interposed between the auxiliary valve body 23 and an annular spring receiving plate 25 screwed to the lower end of the auxiliary valve chamber 21 as shown in FIGS. The valve body 23 is urged in a direction toward the valve seat 15 and in a direction in which it comes into contact with the auxiliary valve seat 22. The coil spring 24 and the spring receiving plate 25 are made of stainless steel. The coil spring 24 urges the valve body 16 in the same direction (upward) as the coil spring 17 via a connecting rod 26 and an auxiliary valve body 23, which will be described later. Is the valve element 16 and the auxiliary valve element 2
It is necessary to set in consideration of the third function. That is,
It is preferable that the urging force of the valve body 16 by the two coil springs 17 and 24 is set so as not to be unnecessarily large and the urging force of the auxiliary valve body 23 by the coil spring 24 is not unnecessarily small.
【００１９】そして、弁体１６と補助弁体２３とは、図
１及び図２に示す如く、第２ガス通路１１にこれを閉塞
することなく進退自在に挿通させた非伸縮性の連結杆２
６を介して、弁体１６が弁閉位置に位置されたときは勿
論、弁開位置に位置されたときにも、補助弁体２３がコ
イルバネ２４に抗して補助弁座２２から離間した位置に
保持されるように、連動連結されている。この実施例で
は、連結杆２６を、両弁体１６，２３がこのような関係
をもって連動連結されるに必要且つ充分な長さを有し且
つ第２ガス通路１１の断面形状より小径の棒状体に構成
して、その両端部を弁体１６及び補助弁体２３に固着し
てある。なお、連結杆２６の構成材としては、弁体１６
の上下動に伴って補助弁体２３をコイルバネ２４に抗し
て押圧変位させるに充分な剛性を有し且つ螺子部９の折
損に伴って容易に折損できる金属材又は樹脂材が選択さ
れる。この実施例では、連結杆２６をステンレス鋼製と
してある。As shown in FIGS. 1 and 2, the valve body 16 and the auxiliary valve body 23 are connected to the non-stretchable connecting rod 2 which is inserted into the second gas passage 11 so as to be able to move forward and backward without being closed.
6, the auxiliary valve element 23 is separated from the auxiliary valve seat 22 against the coil spring 24 when the valve element 16 is positioned at the valve closed position as well as when the valve element 16 is positioned at the valve open position. Are interlocked and connected so as to be held. In this embodiment, the connecting rod 26 is a rod-like body having a length necessary and sufficient for the two valve bodies 16 and 23 to be interlockedly connected in such a relationship and having a smaller diameter than the cross-sectional shape of the second gas passage 11. And both ends thereof are fixed to the valve body 16 and the auxiliary valve body 23. In addition, as a constituent material of the connecting rod 26, the valve body 16 is used.
A metal material or a resin material which has sufficient rigidity to press and displace the auxiliary valve body 23 against the coil spring 24 with the vertical movement of the screw member 9 and which can be easily broken with the breakage of the screw portion 9 is selected. In this embodiment, the connecting rod 26 is made of stainless steel.
【００２０】ところで、弁２の各構成部材の材質は、そ
の部材の機能（例えば、弁体によるシール機能）や取り
扱うガスの性状等に応じて適宜に選定されている。例え
ば、取り扱うガスが腐食性のものである場合には、ガス
に触れる部材については耐食性のある金属材又は樹脂材
で構成しておく。By the way, the material of each component of the valve 2 is appropriately selected according to the function of the member (for example, the sealing function by the valve element) and the properties of the gas to be handled. For example, when the gas to be handled is corrosive, the members that come into contact with the gas are made of a corrosion-resistant metal or resin material.
【００２１】以上のように構成された高圧ガス容器用弁
２にあっては、両弁体１６，２３が連結杆２６を介して
一体連結されていて、弁体１６の上下動に伴って補助弁
体２３も上下動されるが、弁体１６を弁閉位置及び弁開
位置の何れに操作した場合にも、補助弁体２３は補助弁
座２２から離間された状態にあり、第２ガス通路１１は
補助弁体２３により閉塞されることがない（図１，図２
参照）。したがって、弁２の開閉機能上、補助弁体２３
は何ら関与せず、補助弁体２３を設けたことによる問題
はない。In the high pressure gas container valve 2 configured as described above, the two valve bodies 16 and 23 are integrally connected via a connecting rod 26, and are assisted as the valve body 16 moves up and down. Although the valve element 23 is also moved up and down, when the valve element 16 is operated to either the valve closed position or the valve open position, the auxiliary valve element 23 is in a state of being separated from the auxiliary valve seat 22 and the second gas The passage 11 is not closed by the auxiliary valve body 23 (FIGS. 1 and 2).
reference). Therefore, in terms of the opening / closing function of the valve 2, the auxiliary valve element 23
Is not involved at all, and there is no problem due to the provision of the auxiliary valve element 23.
【００２２】而して、保護キャップ４を外した状態で高
圧ガス容器１を交換させる場合等において、冒頭で述べ
た如く、弁２に衝撃が加わって、弁２が螺子部９の基端
箇所Ａ−Ａで折損したときには、弁体１６による弁機能
は喪失するが、容器１からのガス噴出は補助弁体２３に
より確実に阻止される。When the high-pressure gas container 1 is replaced with the protective cap 4 removed, for example, as described at the beginning, an impact is applied to the valve 2 and the valve 2 is moved to the proximal end of the screw portion 9. When broken at A-A, the valve function of the valve body 16 is lost, but gas ejection from the container 1 is reliably prevented by the auxiliary valve body 23.
【００２３】すなわち、螺子部９の基端箇所Ａ−Ａで折
損すると、連結杆２６もこれと同様箇所で折損すること
になる。したがって、補助弁体２３を補助弁座２２から
離間する位置に保持する機能が喪失し、補助弁体２３
は、図４に示す如く、コイルバネ２４により補助弁座２
２に当接されて、容器１側に残存する第２ガス通路部分
１１´が遮断閉塞される。その結果、容器１からのガス
噴出は確実に阻止されることになる。したがって、容器
１内のガスが前述した如き可燃性猛毒ガスである場合に
も、大事故に繋がる危険は未然に回避される。That is, if the screw portion 9 is broken at the base position AA, the connecting rod 26 is also broken at the same position. Accordingly, the function of holding the auxiliary valve body 23 at a position separated from the auxiliary valve seat 22 is lost, and the auxiliary valve body 23
As shown in FIG. 4, the auxiliary valve seat 2 is
2, the second gas passage portion 11 'remaining on the container 1 side is closed and closed. As a result, gas ejection from the container 1 is reliably prevented. Therefore, even when the gas in the container 1 is the highly flammable poisonous gas as described above, the danger leading to a major accident can be avoided.
【００２４】ところで、上記した如く弁２が破損した容
器１には、それが使用済のものであると否とに拘わら
ず、ガスが残存しているから、弁２を交換する場合に
は、その残存ガスを予め排除しておく必要があるが、か
かる残存ガスの排除は、図５に例示する如き適当な治具
３１を使用することによって容易且つ安全に行うことが
できる。Since the gas remains in the container 1 in which the valve 2 has been damaged as described above, regardless of whether it is used, when the valve 2 is replaced, Although it is necessary to remove the residual gas in advance, the removal of the residual gas can be easily and safely performed by using an appropriate jig 31 as illustrated in FIG.
【００２５】すなわち、この治具３１は、図５に示す如
く、保護キャップ４を取付けるための螺子筒５に螺着し
うるキャップ３２と、キャップ３２の上面部に上下螺送
自在に支持させた操作棒３３と、キャップ３２と操作棒
３３との摺動部分をシールするシール部材３４と、キャ
ップ３２に連通状に設けた管継手３５とからなり、ガス
排出に際しては、キャップ３２を適当なパッキン３６を
介して螺子筒５に螺着させることによって、容器口部３
及び折損された螺子部９を密閉できるように構成されて
いる。That is, as shown in FIG. 5, the jig 31 has a cap 32 which can be screwed to the screw cylinder 5 for attaching the protective cap 4 and an upper surface of the cap 32 which is supported so as to be vertically screwed. An operating rod 33, a seal member 34 for sealing a sliding portion between the cap 32 and the operating rod 33, and a pipe joint 35 provided in communication with the cap 32. By screwing to the screw cylinder 5 via the
And it is comprised so that the broken screw part 9 can be sealed.
【００２６】したがって、キャップ３２を取付けると共
に、管継手３５にガス排出管３７を取付けた上、操作棒
３３を下方に螺送操作して、残存する連結杆部分２６´
を押し下げることにより、図５に鎖線で示す如く、補助
弁体２３がコイルスプリング２４に抗して補助弁座２２
から離間せしめられて、容器１内の残存ガスをガス通路
部分１１´及びキャップ３２内を経てガス排出管３７か
ら安全に排出させることができる。勿論、残存ガス量が
多い場合にあって、弁２を交換する時間的余裕がない場
合等にあっては、シール条件次第ではあるが、かかる治
具３１を補助弁体２３と相俟って高圧ガス容器用弁とし
て使用することも可能である。なお、連結杆２６の折損
箇所が、ガス通路部分１１´内にある場合（連結杆２６
が補助弁体２３との連結箇所で破断された場合を含む）
には、操作棒３３をガス通路部分１１´内にまで下降挿
通できるものとしておくか、ガス通路部分１１´に棒状
体を別途差し込んでおくことによって、上記したと同様
のガス排出作業を行うことができる。Accordingly, the cap 32 is attached, the gas exhaust pipe 37 is attached to the pipe joint 35, and the operation rod 33 is screwed downward to operate the remaining connecting rod portion 26 '.
As shown by a chain line in FIG. 5, the auxiliary valve element 23 is opposed to the coil spring 24 so that the auxiliary valve seat 22 is pressed.
The gas remaining in the container 1 can be safely discharged from the gas discharge pipe 37 through the gas passage portion 11 ′ and the cap 32. Of course, when the residual gas amount is large and there is not enough time to replace the valve 2, the jig 31 is combined with the auxiliary valve body 23 depending on the sealing conditions. It is also possible to use it as a valve for a high-pressure gas container. When the connecting rod 26 is broken in the gas passage portion 11 '(the connecting rod 26
Is broken at the connection point with the auxiliary valve element 23)
In order to perform the same gas discharge operation as described above, the operating rod 33 can be inserted down into the gas passage portion 11 ′, or a rod-shaped body is separately inserted into the gas passage portion 11 ′. Can be.
【００２７】なお、本発明は上記実施例に限定されるも
のではなく、本発明の基本原理を逸脱しない範囲におい
て適宜に改良・変更することができる。It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately modified and changed without departing from the basic principle of the present invention.
【００２８】例えば、連結杆２６は、コイルバネ２４の
附勢力と相俟って、両弁体１６，２３を連動連結できる
ものであればよく、両弁体１６，２３に固着しておく必
要はない。すなわち、連結杆２６を、弁体１６，２３の
一方にのみ固着しておくことは勿論、何れの弁体１６，
２３にも固着しないようにすることも可能である。ま
た、連結杆２６の形状，材質も、その存在が弁体１６の
機能及び第２ガス通路１１におけるガス流動性を妨げ
ず、螺子部９と共に折損されることを条件として、任意
である。また、連結杆２６を折損し難い高靱性材で構成
する必要がある場合等にあっては、螺子部９の折損箇所
Ａ−Ａに対応する部位に、折損を誘導する切欠を形成し
ておいてもよい。勿論、かかる切欠は、通常時における
弁体１６，２３の連動連結を妨げるようなものでないこ
とが必要である。For example, the connecting rod 26 may be any member that can link the two valve bodies 16 and 23 in conjunction with the urging force of the coil spring 24, and need not be fixed to the two valve bodies 16 and 23. Absent. That is, not only the connecting rod 26 is fixed to only one of the valve bodies 16 and 23, but also
It is also possible not to stick to 23. The shape and material of the connecting rod 26 are also arbitrary provided that the presence thereof does not hinder the function of the valve body 16 and the gas flowability in the second gas passage 11 and is broken together with the screw portion 9. In the case where the connecting rod 26 needs to be made of a highly tough material that is hard to break, a notch for inducing breakage is formed in a portion of the screw portion 9 corresponding to the broken portion AA. May be. Of course, it is necessary that the notch does not hinder the interlocking connection of the valve bodies 16 and 23 in a normal state.
【００２９】また、補助弁室２１の形状，形成位置は、
その存在によっては螺子部９の強度が低下されないこと
を条件として、任意に設定できる。ただし、螺子部９の
強度及び加工上の観点からは、上記実施例における如
く、容器口部３内に螺合する部分、特に螺子部９の先端
部に形成しておくことが好ましい。ところで、高圧ガス
容器用弁の中には、第２ガス通路１１の先端部に、内径
がガス流路１１の径と略一致する液体取出管を装着する
ように構成したもの（例えば、液化炭酸ガスを収容した
高圧ガス容器に使用されるもの）があるが、このような
タイプの弁２に本発明を適用する場合には、液体取出管
の装着部をそのまま補助弁室２１として利用することが
できる。このようにすれば、既存の高圧ガス容器用弁を
本発明に係る弁２に容易に改造することができる。勿
論、本発明を適用しうる高圧ガス容器用弁は、上記実施
例の如きダイヤフラム弁２に限定されず、任意である。The shape and position of the auxiliary valve chamber 21 are as follows.
Depending on its presence, it can be set arbitrarily provided that the strength of the screw portion 9 is not reduced. However, from the viewpoint of the strength and working of the screw portion 9, it is preferable that the screw portion 9 is formed at a portion to be screwed into the container mouth portion 3, particularly at a tip portion of the screw portion 9, as in the above embodiment. Incidentally, some of the high pressure gas container valves are configured such that a liquid extraction pipe having an inner diameter substantially matching the diameter of the gas flow path 11 is mounted at the tip of the second gas passage 11 (for example, liquefied carbonic acid). Although the present invention is applied to such a type of valve 2, the mounting portion of the liquid extraction pipe should be used as it is as the auxiliary valve chamber 21 when the present invention is applied to such a type of valve 2. Can be. In this manner, the existing high-pressure gas container valve can be easily modified into the valve 2 according to the present invention. Of course, the valve for the high-pressure gas container to which the present invention can be applied is not limited to the diaphragm valve 2 as in the above-described embodiment, and is optional.
【００３０】[0030]
【発明の効果】以上の説明から明らかなように、本発明
の高圧ガス容器用弁によれば、高圧ガス容器が転倒する
等により螺子部の基端箇所で折損した場合にも、補助弁
体によりガス噴出を確実に防止することができる。した
がって、可燃性猛毒ガスを収容している場合等にあって
も、安全対策に万全を期すことができる。As is apparent from the above description, according to the valve for a high-pressure gas container of the present invention, even if the high-pressure gas container is broken at the base end of the screw portion due to overturning or the like, the auxiliary valve body is provided. Thus, gas ejection can be reliably prevented. Therefore, even in the case where flammable highly toxic gas is contained, it is possible to ensure the safety measures.
【図１】本発明に係る高圧ガス容器用弁の一実施例を示
した縦断側面図である。FIG. 1 is a vertical sectional side view showing one embodiment of a valve for a high-pressure gas container according to the present invention.
【図２】図１と異なる状態を示す縦断側面図である。FIG. 2 is a longitudinal sectional side view showing a state different from FIG.
【図３】要部の横断平面図（断面は図１のIII−III線に
沿う）である。FIG. 3 is a cross-sectional plan view of a main part (the cross section is along the line III-III in FIG. 1).
【図４】高圧ガス容器用弁が折損した状態を示す縦断側
面図である。FIG. 4 is a longitudinal sectional side view showing a state in which the high-pressure gas container valve is broken.
【図５】高圧ガス容器用弁の折損後におけるガス排出状
態を示す縦断側面図である。FIG. 5 is a vertical sectional side view showing a gas discharge state after the high-pressure gas container valve is broken.
１…高圧ガス容器、２…高圧ガス容器用弁、３…容器口
部、６…弁箱、７…ガス管、８…連結部、９…螺子部、
１０…第１ガス通路、１１…第２ガス通路、１２…弁操
作室、１５…弁座、１６…弁体、２１…補助弁室、２２
…補助弁座、２３…補助弁体、２４…コイルバネ、２５
…バネ受け体。DESCRIPTION OF SYMBOLS 1 ... High pressure gas container, 2 ... High pressure gas container valve, 3 ... Container mouth part, 6 ... Valve box, 7 ... Gas pipe, 8 ... Connection part, 9 ... Screw part,
DESCRIPTION OF SYMBOLS 10 ... 1st gas passage, 11 ... 2nd gas passage, 12 ... valve operating chamber, 15 ... valve seat, 16 ... valve body, 21 ... auxiliary valve chamber, 22
... Auxiliary valve seat, 23 ... Auxiliary valve element, 24 ... Coil spring, 25
... Spring receiver.
Claims (1)
る連結部（８）及び高圧ガス容器（１）の口部（３）に
ねじ込み固着する螺子部（９）を設け、弁箱（６）内に
形成した弁操作室に、連結部（８）を貫通する第１ガス
通路（１０）及び螺子部（９）を直線状に貫通する第２
ガス通路（１１）の基端を開口させると共に、第２ガス
通路（１１）の基端開口部に形成した弁座（１５）に当
接して両通路間（１０，１１）を遮断閉塞させる閉弁位
置と該弁座（１５）から離間して両通路間（１０，１
１）を連通開放させる開弁位置とに亘って第２ガス通路
（１１）の軸線方向に進退操作される弁体（１６）を内
装してある高圧ガス容器用弁であって、高圧ガス容器
（１）の口部（３）にねじ込み固着された状態で衝撃が
加わったときに螺子部（９）の基端箇所（Ａ−Ａ）で折
損する高圧ガス容器用弁において、高圧ガス容器（１）の口部（３）にねじ込まれた 螺子部
（９）の先端部分に、第２ガス通路（１１）の一部を拡
大させてなる補助弁室（２１）を形成し、 この補助弁室（２１）に、前記弁座（１５）に直対向し
て形成された補助弁座（２２）に当接したときにのみ第
２ガス通路（１１）を遮断閉塞しうる補助弁体（２３）
を第２ガス通路（１１）の軸線方向に進退自在に内装す
ると共に、この補助弁体（２３）を前記弁体（１６）に
向かう方向であって補助弁座（２２）に当接する方向に
附勢させるコイルバネ（２４）を内装し、 弁体（１６）と補助弁体（２３）とを、第２ガス通路
（１１）にこれを閉塞することなく進退自在に挿通させ
た非伸縮性の連結杆（２６）を介して、弁体（１６）が
弁開位置に位置されたときに補助弁体（２３）がコイル
バネ（２４）に抗して補助弁座（２２）から離間した位
置に保持されるように、連動連結してあり、 連結杆（２６）の形状，材質を螺子部（９）と共に折損
されるものとすることによって又は連結杆（２６）を両
弁体（１６，２３）の少なくとも一方に固着しないこと
によって、螺子部（９）が基端箇所（Ａ−Ａ）で折損し
たときにおいて、弁体（１６）と補助弁体（２３）との
連結杆（２６）を介しての連動連結が解除されて、補助
弁体（２３）がコイルバネ（２４）により補助弁座（２
２）に当 接されるように構成した ことを特徴とする高圧
ガス容器用弁。1. A valve box (6) is provided with a connecting portion (8) to which a gas pipe (7) can be connected and a screw portion (9) which is screwed and fixed to an opening (3) of a high-pressure gas container (1). A first gas passage (10) penetrating the connecting portion (8) and a second portion linearly penetrating the screw portion (9) into a valve operating chamber formed in the valve box (6) .
Closing the causes opening the proximal end of the gas passage (11), is blocked closed proximal end opening portion formed valve seat of the second gas passage (11) (15) in contact with both passages between the (10, 11) The valve position is separated from the valve seat (15) and between the two passages (10, 1).
A second gas passage extending over a valve opening position for communicating and opening the first gas passage;
(11) A high-pressure gas container valve provided with a valve body (16) that is operated to reciprocate in the axial direction , wherein the high-pressure gas container
Impact is applied while screwed and secured to the mouth (3) of (1)
Fold at the proximal end (AA) of screw (9) when added
Sonsuru Oite the high-pressure gas container valve, mouth (3) screwed the threaded portion of the high pressure gas container (1)
An auxiliary valve chamber (21) formed by enlarging a part of the second gas passage (11 ) is formed at the tip end of (9) . The auxiliary valve chamber (21 ) is directly connected to the valve seat (15) . An auxiliary valve element (23) that can shut off and close the second gas passage (11) only when it comes into contact with an auxiliary valve seat (22) formed opposite to the auxiliary valve seat (22 ).
Is installed so as to be able to advance and retreat in the axial direction of the second gas passage (11), and the auxiliary valve element (23) is directed toward the valve element (16) and in a direction abutting on the auxiliary valve seat (22). A coil spring (24) to be energized is provided, and the valve body (16) and the auxiliary valve body (23) are connected to the second gas passage.
When the valve element (16) is located at the valve open position via a non-stretchable connecting rod (26) which is inserted through (11) so as to be able to advance and retract without closing the auxiliary valve element (23). broken so they are held at a position spaced apart from the coil spring against the (24) the auxiliary valve seat (22), interlocked and tear is, the shape of the connecting rod (26), the material with threaded portion (9)
Or connecting rod (26) with both
Do not adhere to at least one of the valve bodies (16, 23)
As a result, the screw portion (9) is broken at the base end portion (AA).
The valve body (16) and the auxiliary valve body (23)
The interlocking connection via the connecting rod (26) is released,
The valve body (23) is moved by the coil spring (24) to the auxiliary valve seat (2).
High-pressure gas container valve, characterized by being configured so as to be abutted against the 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6027844A JP2789018B2 (en) | 1994-02-25 | 1994-02-25 | High pressure gas container valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6027844A JP2789018B2 (en) | 1994-02-25 | 1994-02-25 | High pressure gas container valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07239096A JPH07239096A (en) | 1995-09-12 |
| JP2789018B2 true JP2789018B2 (en) | 1998-08-20 |
Family
ID=12232232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6027844A Expired - Fee Related JP2789018B2 (en) | 1994-02-25 | 1994-02-25 | High pressure gas container valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2789018B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100970889B1 (en) * | 2008-04-23 | 2010-07-16 | 강형민 | Internal pressure socket for build up removal process |
| CN108758028B (en) * | 2018-06-27 | 2024-01-26 | 西北农林科技大学 | Dual convenient force type high-pressure gas cylinder safety protection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721900U (en) * | 1980-07-15 | 1982-02-04 |
-
1994
- 1994-02-25 JP JP6027844A patent/JP2789018B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07239096A (en) | 1995-09-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |