JP2003130298A - Gas filling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact reduction valve to which a gas filling device is applied and surely prevent the inflow of fresh gas into a working chamber from an outlet channel of the reduction valve. SOLUTION: A filling channel 34 is formed in a filling fitting 31 to be in communication with the outlet channel 10 of the reduction valve. A protrusive member 37, which protrudes toward a reduction member 17, is provided in the fitting 31. A sealing member 42 is swingably attached to a tip 38 on the reduction member 17 side of the protrusive member 37. An annular seal portion for surrounding a communication channel is provided on the circumferential wall of the communication channel formed in the member 7. The sealing member 43 sealingly abuts against the seal portion to thereby prevent the fresh gas supplied to the outlet channel 10 from flowing into the working chamber of the reduction valve.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、液化ガスや圧縮ガ
スのフレッシュガスを減圧弁の出口路から入口路へ逆方
向に供給するガス充填装置に関し、さらに詳しくは、こ
のガス充填装置が適用される減圧弁をコンパクトにで
き、しかも、上記の出口路から作動室へのフレッシュガ
スの流入を確実に阻止できるガス充填装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas filling device for supplying a fresh gas such as a liquefied gas or a compressed gas in a reverse direction from an outlet passage to an inlet passage of a pressure reducing valve. More specifically, this gas filling device is applied. The present invention relates to a gas filling device which can make a pressure reducing valve compact and can surely prevent fresh gas from flowing into the working chamber from the outlet passage.

【０００２】[0002]

【発明の背景】減圧弁はその出口路を作動室へ連通して
あり、出口路の圧力が高くなると作動室の圧力による閉
じ力で減圧部材を閉じ方向へ移動させ、これにより減圧
弁から取り出されるガスを減圧する。このため、高圧の
フレッシュガスを減圧弁の出口路から入口路へ逆方向へ
流入させようとすると、出口路内の高圧のガスが上記作
動室に流入して減圧部材が閉じ方向へ移動し、減圧弁が
閉弁する。そこで、この種の減圧弁を備えたガスボンベ
に高圧のフレッシュガスを供給する場合、フレッシュガ
スが減圧弁を通過しないように、例えば減圧弁を迂回す
るガス充填路を形成したり、減圧弁に連通するガス取出
し口とは別にガス充填口を設けたりする必要があった。BACKGROUND OF THE INVENTION A pressure reducing valve has its outlet passage communicated with a working chamber, and when the pressure in the outlet passage increases, the pressure reducing member moves the pressure reducing member in the closing direction by the closing force of the pressure in the working chamber. Reduce the gas pressure. Therefore, when trying to flow the high pressure fresh gas from the outlet passage of the pressure reducing valve to the inlet passage in the opposite direction, the high pressure gas in the outlet passage moves into the working chamber and the pressure reducing member moves in the closing direction, The pressure reducing valve closes. Therefore, when supplying high-pressure fresh gas to a gas cylinder equipped with this type of pressure reducing valve, for example, a gas filling path that bypasses the pressure reducing valve is formed so as to prevent the fresh gas from passing through the pressure reducing valve, or to communicate with the pressure reducing valve. It was necessary to provide a gas filling port in addition to the gas outlet.

【０００３】[0003]

【従来の技術】従来、上記の問題点を解消し、出口路か
ら減圧弁を経てガスボンベへフレッシュガスを充填でき
るように構成した減圧弁として、例えば特開平９−１７
０６７２号公報に開示の減圧弁がある。2. Description of the Related Art Conventionally, as a pressure reducing valve which solves the above-mentioned problems and which can be filled with fresh gas from a discharge passage through a pressure reducing valve into a gas cylinder, for example, JP-A-9-17
There is a pressure reducing valve disclosed in Japanese Patent No. 0672.

【０００４】即ち、上記の減圧弁は、ハウジング内に、
減圧弁室と、この減圧弁室に取出しガスを流入させる入
口路と、減圧弁室から取出しガスを排出させる出口路
と、出口路からのガスの流出を制御するため減圧弁室内
に挿入された減圧部材とを有している。上記の減圧部材
は、近位部の第１ピストンとこれより大径で遠位部の第
２ピストンとからなるピストン部材を有している。さら
にこのピストン部材を開弁方向へ付勢する減圧バネを有
している。また、上記第２ピストンの遠位部側に作動室
が形成され、この作動室はピストン部材内に形成した連
通路を介して上記出口路に連通されている。That is, the above pressure reducing valve is provided in the housing.
A pressure reducing valve chamber, an inlet passage through which the taken-out gas flows into the pressure reducing valve chamber, an outlet passage through which the taken-out gas is discharged from the pressure reducing valve chamber, and a pressure reducing valve chamber for controlling the outflow of gas from the outlet passage. And a decompression member. The decompression member has a piston member including a first piston at a proximal portion and a second piston at a distal portion having a larger diameter than the first piston. Further, it has a pressure reducing spring for urging the piston member in the valve opening direction. A working chamber is formed on the distal side of the second piston, and the working chamber is communicated with the outlet passage through a communication passage formed in the piston member.

【０００５】そして、上記入口路から流入する取出しガ
スは、上記減圧バネとともにピストン部材を開弁方向へ
移動させ、上記減圧部材とこれに対面する減圧弁座との
隙間から出口路へ流出することで減圧される。この出口
路の取出しガスの圧力は、上記連通路を介して作動室に
伝わり、この作動室内の圧力が上記第２ピストンを押圧
してピストン部材を閉弁方向へ押し戻す。上記連通路内
には、可動手段が保密摺動可能に配置されており、バネ
で出口路側へ付勢されている。The gas taken out from the inlet passage moves the piston member together with the pressure reducing spring in the valve opening direction, and flows out from the gap between the pressure reducing member and the pressure reducing valve seat facing it to the outlet passage. It is decompressed with. The pressure of the gas taken out of the outlet passage is transmitted to the working chamber via the communication passage, and the pressure in the working chamber pushes the second piston to push the piston member back in the valve closing direction. In the communication passage, movable means is disposed so as to be able to slide in a hermetically sealed manner, and is biased by a spring toward the outlet passage.

【０００６】この減圧弁を備えたガスボンベ内へ高圧の
フレッシュガスを充填する場合、先端に押圧部を設けた
充填金具を上記の出口路に装着し、この出口路に挿入し
た上記押圧部で上記の可動手段を押圧する。この押圧に
より、上記の可動手段は上記バネの付勢力に抗して作動
室側へ移動し、その端部は上記の移動でハウジングに接
当して作動室へのフレッシュガスの流入を阻止する。こ
れにより、上記第２ピストンに閉弁方向の力が加わるこ
とが阻止され、減圧弁が開弁状態に維持されるので、高
圧のフレッシュガスは減圧弁を通過してガスボンベ内に
流入する。When the high pressure fresh gas is filled in the gas cylinder equipped with the pressure reducing valve, a filling metal fitting having a pressing portion at its tip is attached to the outlet passage, and the pressing portion inserted into the outlet passage is used for the above operation. The movable means of is pressed. By this pressing, the movable means moves to the working chamber side against the biasing force of the spring, and the end of the movable means comes into contact with the housing by the above movement to prevent the fresh gas from flowing into the working chamber. . Thus, the force in the valve closing direction is prevented from being applied to the second piston, and the pressure reducing valve is maintained in the open state, so that the high-pressure fresh gas passes through the pressure reducing valve and flows into the gas cylinder.

【０００７】[0007]

【発明が解決しようとする課題】上記の従来技術は、減
圧弁を通してフレッシュガスを充填でき、減圧弁を迂回
させた充填路等を設ける必要がない点で優れてはいる
が、次の問題点がある。 (１) 連通路内に可動手段を保密摺動可能に設けてある
が、この可動手段はガス取出し時に連通路を遮断しては
ならず、一方、充填時には出口路から作動室へのフレッ
シュガスの流入を確実に阻止する必要があり、このた
め、この可動手段を備えた減圧弁は構造が複雑になる。
これを解消するため、ピストン部材の一部で可動手段を
構成することも考えられる。しかしながら、上記可動手
段は開弁方向への移動により作動室へのガスの流入を阻
止するものであり、一方、ピストン部材は減圧バネで開
弁方向に付勢されている。従って、このピストン部材の
一部で上記可動手段を構成すると、ガスボンベからガス
を取出す際にピストン部材が開弁側に移動しており、出
口路内の取出しガスの圧力が作動室へ伝わらないため減
圧できない。The above-mentioned prior art is excellent in that fresh gas can be filled through the pressure reducing valve, and it is not necessary to provide a filling passage or the like that bypasses the pressure reducing valve, but the following problems are encountered. There is. (1) The movable means is provided in the communication passage so as to be able to slide tightly, but the movable means must not block the communication passage at the time of extracting gas, while the fresh gas from the outlet passage to the working chamber at the time of filling. Must be reliably blocked, which complicates the structure of the pressure reducing valve provided with this movable means.
In order to solve this, it may be considered that the movable member is configured by a part of the piston member. However, the movable means prevents the gas from flowing into the working chamber by moving in the valve opening direction, while the piston member is biased in the valve opening direction by the pressure reducing spring. Therefore, if the movable means is constituted by a part of the piston member, the piston member is moved to the valve opening side when the gas is taken out from the gas cylinder, and the pressure of the taken-out gas in the outlet passage is not transmitted to the working chamber. I can't reduce the pressure.

【０００８】(２) 上記の可動部材は連通路に保密摺動
可能に配置されることから、上記の連通路はこの可動部
材を収容できるように大径に形成される。そしてこの連
通路はピストン部材内に形成されていることから、上記
の連通路が大径に形成される分、ピストン部材は大形に
形成され、減圧弁がかなり大形化する。(2) Since the movable member is arranged so as to be able to slide in a tight and tight manner in the communication passage, the communication passage is formed to have a large diameter so as to accommodate the movable member. Since this communication passage is formed inside the piston member, the diameter of the communication passage is increased, so that the piston member is increased in size and the pressure reducing valve is increased in size.

【０００９】本発明は上記の問題点を解消し、このガス
充填装置が適用される減圧弁をコンパクトにでき、しか
も、上記の出口路から作動室へのフレッシュガスの流入
を確実に阻止できるガス充填装置を提供することを技術
的課題とする。The present invention solves the above problems, makes it possible to make the pressure reducing valve to which this gas filling device is applied compact, and to reliably prevent the fresh gas from flowing into the working chamber from the outlet passage. A technical problem is to provide a filling device.

【００１０】[0010]

【課題を解決するための手段】本発明は、上記の目的を
達成するため、例えば図１から図８に示すように、ガス
充填装置を次のように構成した。即ち、充填金具(31)か
らのフレッシュガスを減圧弁(９)の出口路(10)から入口
路(８)へ逆方向に供給するガス充填装置であって、上記
の減圧弁(９)は入口路(８)から流入するガス圧力によっ
て減圧部材(17)を減圧弁座(14)から離間させると共に、
作動室(24)の圧力によって上記の減圧部材(17)を減圧弁
座(14)に近接させるように構成してあり、上記の減圧部
材(17)は上記出口路(10)を作動室(24)へ連通させるため
の連通路(25)を有し、この連通路(25)の周壁(25ａ)は連
通路(25)を取り囲む環状の被シール部(28)を備えてお
り、上記の充填金具(31)内に充填路(34)を形成して、こ
の充填路(34)を上記の出口路(10)に連通させ、上記の充
填金具(31)は、前記の減圧部材(17)へ向けて突出する突
出部材(37)を備え、この突出部材(37)の上記の減圧部材
(17)側の先端部(38)に封止部材(42)を揺動自在に付設し
て、その封止部材(42)を前記の被シール部(28)に封止接
当させることにより、前記の出口路(10)へ供給された前
記フレッシュガスが前記の作動室(24)へ流れるのを阻止
するように構成したことを特徴とする。In order to achieve the above object, the present invention has a gas filling device configured as follows, for example, as shown in FIGS. 1 to 8. That is, a gas filling device for supplying fresh gas from the filling metal fitting (31) from the outlet passage (10) of the pressure reducing valve (9) to the inlet passage (8) in the reverse direction, wherein the pressure reducing valve (9) is The pressure reducing member (17) is separated from the pressure reducing valve seat (14) by the gas pressure flowing from the inlet passage (8),
The pressure reducing member (17) is configured to approach the pressure reducing valve seat (14) by the pressure of the working chamber (24), and the pressure reducing member (17) connects the outlet passage (10) to the working chamber ( There is a communication passage (25) for communicating with the communication passage 24, and the peripheral wall (25a) of this communication passage (25) is provided with an annular sealed portion (28) surrounding the communication passage (25). A filling passage (34) is formed in the filling metal fitting (31), the filling passage (34) is communicated with the outlet passage (10), and the filling metal fitting (31) has the decompression member (17). ) Is provided with a protruding member (37), and the above-mentioned pressure reducing member of this protruding member (37).
By attaching the sealing member (42) to the tip end portion (38) on the (17) side in a swingable manner, and sealingly abutting the sealing member (42) on the sealed portion (28). It is characterized in that the fresh gas supplied to the outlet passage (10) is prevented from flowing into the working chamber (24).

【００１１】[0011]

【作用】本発明は、次のように作用する。ガスを取り出
す際、上記の入口路から減圧弁室に取出しガスが流入す
ると、そのガス圧力で上記減圧部材が減圧弁座から離間
する。これにより、取出しガスが上記減圧部材と減圧弁
座との隙間から出口路へ減圧されながら流出する。この
出口路に流出した取出しガスの圧力は、上記連通路を介
して作動室に伝わり、この作動室内の圧力で減圧部材を
押圧して減圧弁座側へ押し戻す。この作動室内のガス圧
力による閉じ力と、上記の入口路から流入するガス圧力
による開き力とで減圧部材が減圧弁座に近接又は減圧弁
座から離間し、上記の出口路から流出する取出しガスが
所定の圧力に減圧される。The present invention operates as follows. When the gas is taken out and the taken-out gas flows into the pressure reducing valve chamber through the inlet passage, the gas pressure causes the pressure reducing member to separate from the pressure reducing valve seat. As a result, the taken-out gas flows out of the gap between the pressure reducing member and the pressure reducing valve seat into the outlet passage while being reduced in pressure. The pressure of the taken-out gas flowing out to the outlet passage is transmitted to the working chamber through the communication passage, and the pressure inside the working chamber pushes the pressure reducing member to push it back to the pressure reducing valve seat side. The take-out gas flowing out from the outlet passage by the pressure reducing member being close to or apart from the pressure reducing valve seat due to the closing force due to the gas pressure in the working chamber and the opening force due to the gas pressure flowing from the inlet passage. Is reduced to a predetermined pressure.

【００１２】減圧弁の出口路から入口路へフレッシュガ
スを供給する場合は、上記の充填金具を上記の出口路に
装着して、上記の突出部材に付設した上記の封止部材
を、上記の連通路の周壁に設けた上記の環状の被シール
部に接当させる。このとき、上記の封止部材が上記の突
出部材に固定されている場合、この突出部材に僅かな撓
みなどの歪みがあると、この突出部材が長く形成される
場合には特に、上記の封止部材の封止面が被シール部に
対して傾斜し、被シール部の一部に接当しなくなる惧れ
がある。そして被シール部の一部が封止部材の封止面に
接当しないと、この非接当部を介して出口路と前記の作
動室とが連通し、減圧弁が閉弁側へ移動してフレッシュ
ガスを入口路へ供給することができなくなる。When the fresh gas is supplied from the outlet passage of the pressure reducing valve to the inlet passage, the filling metal fitting is attached to the outlet passage, and the sealing member attached to the projecting member is attached to the sealing member. The ring-shaped sealed portion provided on the peripheral wall of the communication passage is brought into contact with the sealed portion. At this time, in the case where the sealing member is fixed to the protruding member, if the protruding member has a distortion such as a slight bending, the sealing member is particularly formed when the protruding member is formed long. The sealing surface of the stop member may be inclined with respect to the sealed portion and may not contact a portion of the sealed portion. If a part of the sealed portion does not contact the sealing surface of the sealing member, the outlet passage communicates with the working chamber via the non-contact portion, and the pressure reducing valve moves to the valve closing side. As a result, fresh gas cannot be supplied to the inlet passage.

【００１３】しかしながら本発明では、上記の封止部材
を上記の突出部材に対して揺動自在に付設してあるの
で、上記の接当の際の押圧力で封止部材が揺動して、封
止面が被シール部に沿った状態となり、被シール部の全
体に隙間なく接当する。これにより、連通路が封止部材
で蓋された状態に封止され、出口路から作動室へのフレ
ッシュガスの流入が阻止される。この結果、減圧部材は
出口路内のフレッシュガスの圧力に押圧されて開弁側へ
移動し、フレッシュガスは入口路へ供給される。However, in the present invention, since the above-mentioned sealing member is swingably attached to the above-mentioned projecting member, the sealing member swings due to the pressing force at the time of the above contact, The sealing surface is in a state of being along the sealed portion, and contacts the entire sealed portion without a gap. As a result, the communication passage is sealed in a state of being covered by the sealing member, and the inflow of fresh gas from the outlet passage into the working chamber is blocked. As a result, the pressure reducing member is pressed by the pressure of the fresh gas in the outlet passage to move to the valve opening side, and the fresh gas is supplied to the inlet passage.

【００１４】上記の突出部材は、上記の充填金具に、上
記の減圧部材へ向けて進退自在に支持し、付勢手段によ
り上記の減圧部材側へ付勢することができる。この場合
には、突出部材が付勢手段で押圧されるので、上記の封
止部材を揺動させて上記の被シール部の全体へ隙間なく
確りと押圧でき、上記の連通路を確実に封止することが
できる。なお、上記の付勢手段としては、バネ等の弾性
体を用いても良く、或いはフレッシュガス等のガス圧力
を用いても良いし、さらにこれらを組合せて用いてもよ
い。The projecting member can be supported by the filling fitting so as to be movable back and forth toward the depressurizing member, and can be biased toward the depressurizing member side by the biasing means. In this case, since the projecting member is pressed by the biasing means, the sealing member can be swung to press the entire sealed portion without any gap, and the communication passage can be reliably sealed. You can stop. As the urging means, an elastic body such as a spring may be used, a gas pressure such as fresh gas may be used, or a combination of these may be used.

【００１５】上記充填金具内の充填路を上記の出口路へ
連通させるための吐出口は、上記の金具先端部に設けて
もよく、この場合は上記の突出部材を棒状に形成するこ
とができる。また、上記の突出部材を筒状に形成した場
合には、この筒状壁に吐出口を設けて、上記の充填路を
上記の筒状突出部材の内部と吐出口を経て上記の出口路
に連通させてもよい。The discharge port for connecting the filling passage in the filling metal fitting to the outlet passage may be provided at the tip of the fitting, and in this case, the protruding member may be formed in a rod shape. . Further, when the above-mentioned protruding member is formed in a cylindrical shape, a discharge port is provided in this cylindrical wall, and the above-mentioned filling path is connected to the inside of the above-mentioned cylindrical protruding member and the above-mentioned outlet path through the discharge port. You may communicate.

【００１６】[0016]

【実施の形態】以下、本発明の実施の形態を図面に基づ
き説明する。図１から図５は本発明の第１実施形態を示
し、図１は減圧弁を備えるバルブ装置の一部破断図、図
２は減圧弁の断面図、図３はガス充填装置の断面図、図
４はバルブ装置に装着したガス充填装置の封止部材近傍
を拡大した断面図、図５はガス充填装置を装着した状態
の減圧弁の断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 show a first embodiment of the present invention, FIG. 1 is a partially cutaway view of a valve device including a pressure reducing valve, FIG. 2 is a sectional view of a pressure reducing valve, FIG. 3 is a sectional view of a gas filling device, FIG. 4 is an enlarged cross-sectional view of the vicinity of the sealing member of the gas filling device attached to the valve device, and FIG. 5 is a cross-sectional view of the pressure reducing valve with the gas filling device attached.

【００１７】図１に示すように、バルブ装置(１)のハウ
ジング(２)には、ガスボンベ(３)に固定する脚ネジ部
(４)の下面にガス入口(５)を設けてあり、上下方向中間
部の一側に形成した出口ノズル(６)の端面にガス出口
(７)を設けてある。そして上記ハウジング(２)内で上記
のガス入口(５)とガス出口(７)との間に、入口路(８)と
減圧弁(９)の減圧弁室(13)と出口路(10)とが順に連通形
成してある。As shown in FIG. 1, the housing (2) of the valve device (1) has a leg screw portion for fixing the gas cylinder (3).
A gas inlet (5) is provided on the lower surface of (4), and a gas outlet is provided on the end face of an outlet nozzle (6) formed on one side in the vertical middle part.
(7) is provided. Then, in the housing (2), between the gas inlet (5) and the gas outlet (7), the inlet passage (8) and the pressure reducing valve chamber (13) of the pressure reducing valve (9) and the outlet passage (10). And are formed in order.

【００１８】上記入口路(８)にはガス入口(５)と減圧弁
室(13)との間に図示しない止め弁が設けてあり、この止
め弁はハウジング(２)の上部に付設した操作ハンドル(1
1)により開閉操作される。また、上記の出口ノズル(６)
にはガス取出し用金具(図示せず)が接続可能となってい
る。The inlet passage (8) is provided with a stop valve (not shown) between the gas inlet (5) and the pressure reducing valve chamber (13). This stop valve is attached to the upper part of the housing (2). Handle (1
It is opened and closed by 1). In addition, the above-mentioned outlet nozzle (6)
A gas extraction fitting (not shown) can be connected to the.

【００１９】上記のハウジング(２)には、上記出口ノズ
ル(６)と反対側の側面に装着孔(12)が凹設してあり、こ
の装着孔(12)の奥部に上記の減圧弁室(13)が形成され、
この減圧弁室(13)に開口する上記出口路(10)の開口周縁
に逆止弁座(14)が形成してある。The housing (2) is provided with a mounting hole (12) on the side surface opposite to the outlet nozzle (6), and the pressure reducing valve is formed at the inner part of the mounting hole (12). A chamber (13) is formed,
A check valve seat (14) is formed on the opening peripheral edge of the outlet passage (10) opening to the pressure reducing valve chamber (13).

【００２０】図１及び図２に示すように、上記の装着孔
(12)には、減圧弁室(13)内で上記の逆止弁座(14)を取り
囲む状態に筒状のフィルター(15)が装着され、このフィ
ルター(15)を挟着する状態に筒体(16)が保密状に装着し
てある。As shown in FIGS. 1 and 2, the mounting holes described above are provided.
A cylindrical filter (15) is installed in the pressure reducing valve chamber (13) so as to surround the check valve seat (14) in the pressure reducing valve chamber (13). The body (16) is tightly fitted.

【００２１】上記の筒体(16)内には減圧部材(17)が、上
記の減圧弁座(14)に対して接離可能に収容されており、
この筒体(16)の外側開口(18)を蓋体(19)で密封してあ
る。上記の減圧部材(17)は、減圧弁座(14)に近位の第１
ピストン(22)と、これよりも遠位で大径の第２ピストン
(23)とを備えており、これらの第１ピストン(22)と第２
ピストン(23)は、それぞれ上記の筒体(16)の内面を保密
摺動するように筒体(16)内に挿入されている。A decompression member (17) is housed in the cylindrical body (16) so that it can be brought into contact with and separated from the decompression valve seat (14).
The outer opening (18) of the cylindrical body (16) is sealed with a lid body (19). The decompression member (17) is the first proximal to the decompression valve seat (14).
Piston (22) and second piston distal and larger in diameter
(23) and these first piston (22) and second
The pistons (23) are inserted into the cylindrical body (16) so as to slide tightly on the inner surface of the cylindrical body (16).

【００２２】上記の第２ピストン(23)と上記の蓋体(19)
との間には作動室(24)を形成してあり、この作動室(24)
に挿入した減圧バネ(21)により、上記の減圧部材(17)を
減圧弁座(14)側へ弾圧してある。また、前記の蓋体(19)
には、上記の作動室(24)と外部空間とを連通する排出路
(26)を設けてあり、この排出路(26)に安全弁(27)を設け
てある。The above-mentioned second piston (23) and the above-mentioned lid (19)
A working chamber (24) is formed between the working chamber (24) and
The pressure reducing spring (21) inserted into the pressure reducing member (17) elastically presses the pressure reducing member (17) toward the pressure reducing valve seat (14). Also, the lid body (19)
Is a discharge passage that connects the working chamber (24) and the external space.
(26) is provided, and a safety valve (27) is provided in this discharge path (26).

【００２３】上記の減圧部材(17)には、上記の作動室(2
4)と前記の出口路(10)とを連通する連通路(25)が透設し
てあり、その連通路(25)の周壁(25ａ)には上記の出口路
(10)に対面する端面に、連通路(25)を取り囲む環状の被
シール部(28)を設けてある。The decompression member (17) includes the working chamber (2
A communication passage (25) communicating between 4) and the exit passage (10) is transparently provided, and the exit passage is formed on the peripheral wall (25a) of the communication passage (25).
An annular sealed portion (28) surrounding the communication passage (25) is provided on the end face facing the (10).

【００２４】次に、上記の減圧弁(９)を通してガスボン
ベ(３)から貯蔵ガスを取り出す場合について説明する。
前記の操作ハンドル(11)を操作して止め弁を開くと、ガ
スボンベ(３)内の貯蔵ガスはガス入口(５)から取出さ
れ、入口路(８)を経て減圧弁室(13)内へ流入し、フィル
ター(15)で濾過される。この流入した取出しガスの圧力
が所定の残圧値よりも高いと、減圧バネ(21)の押圧力に
抗して上記第１ピストン(22)を押圧し、上記減圧部材(1
7)を減圧弁座(14)から離間させる。これにより減圧弁
(９)が開弁して、取出しガスが前記の出口路(10)へ減圧
されながら流出する。Next, the case where the stored gas is taken out from the gas cylinder (3) through the pressure reducing valve (9) will be described.
When the stop valve is opened by operating the operation handle (11), the stored gas in the gas cylinder (3) is taken out from the gas inlet (5) and enters the pressure reducing valve chamber (13) through the inlet passage (8). It flows in and is filtered by a filter (15). When the pressure of the inflowing taken-out gas is higher than a predetermined residual pressure value, the first piston (22) is pressed against the pressing force of the decompression spring (21), and the decompression member (1
Separate 7) from the pressure reducing valve seat (14). This reduces the pressure
(9) opens, and the taken-out gas flows out to the outlet passage (10) while being decompressed.

【００２５】上記の出口路(10)のガス圧力は、上記の連
通路(25)を介して作動室(24)に伝わり、上記の第２ピス
トン(23)を押圧して減圧部材(17)を減圧弁座(14)側へ押
し戻す。これにより、上記の第１ピストン(22)に加わる
ガス圧力による開き力と、第２ピストン(23)に加わるガ
ス圧力での閉じ力に減圧バネ(21)の押圧力を加えた合力
とのバランスで減圧部材(17)が開閉作動し、上記の出口
路(10)から流出する取出しガスが所定の圧力に減圧され
る。The gas pressure in the outlet passage (10) is transmitted to the working chamber (24) through the communication passage (25) and presses the second piston (23) to reduce the pressure (17). Push back to the pressure reducing valve seat (14) side. As a result, the balance between the opening force of the gas pressure applied to the first piston (22) and the closing force of the gas pressure applied to the second piston (23) plus the pressing force of the pressure reducing spring (21) Then, the decompression member (17) is opened and closed to decompress the taken-out gas flowing out of the outlet passage (10) to a predetermined pressure.

【００２６】上記出口路(10)内のガス圧力が異常に上昇
して前記の安全弁(27)の設定圧力よりも高くなった場合
には、上記の安全弁(27)が開弁して作動室(24)が外部空
間に連通する。これにより、異常上昇したガスの一部が
排出路(26)を経て外部へ放出され、出口路(10)内のガス
圧力が安全な設定圧力以下に低下する。When the gas pressure in the outlet passage (10) rises abnormally and becomes higher than the set pressure of the safety valve (27), the safety valve (27) is opened and the working chamber is opened. (24) communicates with the outside space. As a result, part of the gas that has risen abnormally is discharged to the outside through the discharge passage (26), and the gas pressure in the outlet passage (10) drops below a safe set pressure.

【００２７】ガスの消費とともにガスボンベ(３)内のガ
ス残量が少なくなって、前記入口路(８)から減圧弁室(1
3)へ流入するガス圧力が所定の残圧値よりも低くなる
と、上記第１ピストン(22)を押圧するガス圧力が上記減
圧バネ(21)の押圧力よりも弱くなる。これにより、上記
の減圧部材(17)が減圧弁座(14)に押し付けられて減圧弁
(９)が閉弁し、ガスボンベ(３)内に所定の残圧を保持し
た状態でガスの取出しが停止される。As the gas is consumed, the remaining amount of gas in the gas cylinder (3) becomes small, and the pressure reducing valve chamber (1) flows from the inlet passage (8).
When the gas pressure flowing into 3) becomes lower than a predetermined residual pressure value, the gas pressure pressing the first piston (22) becomes weaker than the pressing force of the pressure reducing spring (21). As a result, the pressure reducing member (17) is pressed against the pressure reducing valve seat (14) and the pressure reducing valve is pressed.
The valve (9) is closed, and the extraction of gas is stopped while maintaining a predetermined residual pressure in the gas cylinder (3).

【００２８】上記の実施形態では、上記の減圧バネで減
圧部材を閉弁方向に弾圧したので、この減圧弁に残圧保
持機能を持たせることができたが、この減圧バネの配置
は任意であり、例えば減圧部材を開弁方向に押圧する状
態に減圧バネを配置することも可能である。また、この
実施形態では、上記の第１ピストンと第２ピストンとを
筒体の内面に摺動させたが、本発明では第１ピストンを
筒体の内面に、第２ピストンを蓋部材の内面に、それぞ
れ摺動させるように構成してもよい。In the above embodiment, since the pressure reducing member is elastically pressed in the valve closing direction by the pressure reducing spring, the pressure reducing valve can be provided with the residual pressure holding function, but the arrangement of the pressure reducing spring is arbitrary. It is also possible to arrange the pressure reducing spring in a state of pressing the pressure reducing member in the valve opening direction, for example. Further, in this embodiment, the first piston and the second piston are slid on the inner surface of the tubular body, but in the present invention, the first piston is on the inner surface of the tubular body and the second piston is on the inner surface of the lid member. Alternatively, they may be slid respectively.

【００２９】次に、上記のガスボンベに液化ガスや圧縮
ガスを充填するガス充填装置について説明する。図３に
示すように、このガス充填装置(30)の充填金具(31)は、
前記の出口ノズル(６)に保密装着される雌ネジ構造の嵌
合部(32)を金具先端部(33)に設けてあり、この充填金具
(31)の内部に充填路(34)が形成してある。この充填路(3
4)の金具先端部(33)には筒状の支持部材(35)が装着して
あり、この支持部材(35)に吐出口(36)を設けてある。上
記の充填路(34)は、この吐出口(36)を介して上記の出口
ノズル(６)内の出口路(10)に連通する。Next, a gas filling device for filling the above gas cylinder with a liquefied gas or a compressed gas will be described. As shown in FIG. 3, the filling fitting (31) of the gas filling device (30) is
A fitting portion (32) having a female screw structure that is hermetically fitted to the outlet nozzle (6) is provided at the fitting tip (33).
A filling channel (34) is formed inside the (31). This filling channel (3
A cylindrical support member (35) is mounted on the metal fitting tip portion (33) of 4), and a discharge port (36) is provided in this support member (35). The filling passage (34) communicates with the outlet passage (10) in the outlet nozzle (6) through the discharge port (36).

【００３０】上記の支持部材(36)には棒状の突出部材(3
7)が進退自在に挿通され、この突出部材(37)の先端部(3
8)は上記の金具先端部(33)よりも前記の減圧部材(17)へ
向けて突出させてある。この突出部材(37)の基端部側に
はバネ受け(39)が装着してあり、充填路(34)に配置した
付勢バネ(40)をこのバネ受け(39)で受け止めることによ
り、上記の突出部材(37)が上記の減圧部材(17)側へ付勢
されている。なお、上記のバネ受け(39)は充填路(34)の
内面を摺動するが、外面は角柱状に形成されており、こ
のバネ受け(39)の外面と上記の充填路(34)の内面との間
にガス通路が形成されている。The support member (36) has a rod-shaped protruding member (3
7) is inserted so that it can be moved back and forth, and the tip (3
8) is made to project toward the pressure reducing member (17) from the metal fitting tip portion (33). A spring receiver (39) is attached to the base end side of the projecting member (37), and the bias spring (40) arranged in the filling path (34) is received by this spring receiver (39). The protruding member (37) is biased toward the pressure reducing member (17). The spring receiver (39) slides on the inner surface of the filling passage (34), but the outer surface is formed into a prismatic shape, and the outer surface of the spring receiver (39) and the filling passage (34) are formed. A gas passage is formed between the inner surface and the inner surface.

【００３１】図３及び図４に示すように、上記の突出部
材(37)の上記の先端部(38)には、概略球状の係合凸部(4
1)を突設してあり、この係合凸部(41)に封止部材(42)の
係合凹部(43)を揺動自在に嵌合してある。この封止部材
(42)の上記の係合凹部(43)とは反対側に封止面(44)が形
成されている。この封止面(44)は、ガス充填装置(30)が
バルブ装置(１)に装着されると、前記の減圧部材(17)に
形成された被シール部(28)に封止接当する。As shown in FIGS. 3 and 4, the tip end portion (38) of the projecting member (37) has a substantially spherical engaging projection (4).
1) is projectingly provided, and the engaging concave portion (43) of the sealing member (42) is swingably fitted into the engaging convex portion (41). This sealing member
A sealing surface (44) is formed on the side of the (42) opposite to the engaging recess (43). When the gas filling device (30) is attached to the valve device (1), the sealing surface (44) is brought into sealing contact with the sealed portion (28) formed on the pressure reducing member (17). .

【００３２】次に、上記のガス充填装置を用いて前記の
ガスボンベにガスを充填する場合について説明する。上
記の充填金具(31)をバルブ装置(１)の出口ノズル(６)に
装着すると、図５に示すように、上記の突出部材(37)は
前記の出口路(10)内に挿入される。上記の突出部材(37)
は前記の付勢バネ(40)によって減圧部材(17)側へ付勢さ
れており、また、この減圧部材(17)に設けた連通路(25)
は上記出口路(10)と略同一直線上に形成されている。こ
のため、上記の充填金具(31)の装着により、上記の突出
部材(37)の先端部(38)に付設した前記の封止部材(42)の
封止面(44)が、上記の連通路(25)の周壁(25ａ)の端面に
形成した前記の被シール部(28)に出口路(10)側から前記
の作動室(24)側へ向けて接当する。Next, the case where the above gas cylinder is filled with gas using the above-mentioned gas filling device will be described. When the filling fitting (31) is attached to the outlet nozzle (6) of the valve device (1), the protruding member (37) is inserted into the outlet passage (10) as shown in FIG. . Projecting member above (37)
Is urged toward the pressure reducing member (17) by the urging spring (40), and the communication passage (25) provided in the pressure reducing member (17).
Are formed substantially on the same straight line as the exit passage (10). Therefore, by mounting the filling metal fitting (31), the sealing surface (44) of the sealing member (42) attached to the tip end portion (38) of the protruding member (37) is connected to the above-mentioned continuous surface. The sealed portion (28) formed on the end surface of the peripheral wall (25a) of the passage (25) is abutted from the outlet passage (10) side toward the working chamber (24) side.

【００３３】図４に示すように、上記の封止部材(42)の
係合凹部(43)は前記の突出部材(37)の係合凸部(41)に揺
動自在に嵌合してあるため、上記の接当の際の押圧力で
封止部材(42)が揺動する。この結果、上記の封止部材(4
2)は、封止面(44)が被シール部(28)に沿った状態となっ
て被シール部(28)の全体に隙間なく接当する。As shown in FIG. 4, the engaging concave portion (43) of the sealing member (42) is swingably fitted to the engaging convex portion (41) of the projecting member (37). Therefore, the sealing member (42) swings due to the pressing force at the time of the above contact. As a result, the above-mentioned sealing member (4
In 2), the sealing surface (44) is in a state of being along the sealed portion (28) and contacts the entire sealed portion (28) without any gap.

【００３４】この状態で前記の操作ハンドル(11)により
止め弁を開き、ガス充填装置(30)からフレッシュガスを
供給する。このフレッシュガスは、前記の充填路(34)か
ら吐出口(36)を経て、出口路(10)内に流入する。上記の
封止部材(42)は前記の被シール部(28)の全体に隙間なく
接当しており、この状態で、付勢バネ(40)の押圧力に加
えてフレッシュガスの圧力を受けるので、上記の被シー
ル部(28)に確りと押圧され、連通路(25)が確実に封止さ
れる。このため、上記のフレッシュガスは連通路(25)か
ら前記の作動室(24)へ流入することがなく、このフレッ
シュガスの高圧が作動室(24)に伝わることがない。そし
て、減圧部材(17)は出口路(10)内のフレッシュガスの圧
力に押圧されて開弁側へ移動し、減圧弁(９)は開弁状態
に維持される。この結果、フレッシュガスは上記の出口
路(10)から減圧弁室(13)、及び入口路(８)を経てガス入
口(５)からガスボンベ(３)内に流入し、充填される。In this state, the stop valve is opened by the operation handle (11), and fresh gas is supplied from the gas filling device (30). The fresh gas flows into the outlet passage (10) from the filling passage (34) through the discharge port (36). The sealing member (42) is in contact with the entire sealed portion (28) without any clearance, and in this state, receives the pressure of fresh gas in addition to the pressing force of the biasing spring (40). Therefore, the sealed portion (28) is reliably pressed, and the communication passage (25) is reliably sealed. Therefore, the fresh gas does not flow into the working chamber (24) from the communication passage (25), and the high pressure of the fresh gas is not transmitted to the working chamber (24). Then, the pressure reducing member (17) is pressed by the pressure of the fresh gas in the outlet passage (10) to move to the valve opening side, and the pressure reducing valve (9) is maintained in the valve open state. As a result, the fresh gas flows into the gas cylinder (3) from the gas inlet (5) through the pressure reducing valve chamber (13) and the inlet passage (8) through the outlet passage (10) and is filled there.

【００３５】なお、出口路(10)内がフレッシュガスで高
圧になるが、上記の連通路(25)が封止部材(42)で封止さ
れており、作動室(24)にフレッシュガスが流入しないの
で、安全弁(27)がフレッシュガスの高圧で開弁すること
はない。Although the outlet passage (10) has a high pressure due to the fresh gas, the communication passage (25) is sealed by the sealing member (42) and the working chamber (24) is filled with the fresh gas. Since there is no inflow, the safety valve (27) will not open due to the high pressure of fresh gas.

【００３６】図６は本発明の第２実施形態を示すガス充
填装置の断面図である。この第２実施形態では、上記の
第１実施形態と異なり、突出部材(37)を筒状に形成して
あり、この突出部材(37)の筒状壁の先端部寄り位置に吐
出口(36)を設けてある。充填金具(31)内に形成した充填
路(34)は、筒状の突出部材(37)の内部とこの吐出口(36)
を介して出口ノズル(６)内の出口路(10)に連通される。FIG. 6 is a sectional view of a gas filling apparatus showing a second embodiment of the present invention. In the second embodiment, unlike the above-described first embodiment, the projecting member (37) is formed in a tubular shape, and the ejection port (36) is located at a position near the tip of the tubular wall of the projecting member (37). ) Is provided. The filling passage (34) formed in the filling metal fitting (31) is provided inside the tubular projecting member (37) and the discharge port (36).
Through the outlet nozzle (6) to the outlet passage (10).

【００３７】また、この第２実施形態では、上記の第１
実施形態と異なり、封止部材(42)の後面に係合凸部(41)
を突設してあり、この係合凸部(41)を筒状の突出部材(3
7)の先端部(38)に揺動自在に嵌合してある。なお、本発
明の上記の封止部材は、突出部材に揺動自在に付設して
あればよく、その付設のための構造は上記の第１実施形
態やこの第２実施形態の構造に限定されるものではな
い。Further, in the second embodiment, the first
Different from the embodiment, the engaging protrusion (41) is provided on the rear surface of the sealing member (42).
And the engaging protrusion (41) is provided with a cylindrical protruding member (3
It is fitted to the tip (38) of 7) so that it can swing. The sealing member of the present invention may be attached to the projecting member so as to be swingable, and the structure for attaching the sealing member is not limited to the structures of the first embodiment and the second embodiment. Not something.

【００３８】さらに、この第２実施形態では、上記の充
填金具(31)の金具先端部(33)に雄ネジ構造の嵌合部(32)
を形成してある。ただし、本発明の上記の嵌合部の構造
は、バルブ装置の出口ノズル(６)に対応する任意の構造
を採用できることは言うまでもない。その他の構造は上
記の第１実施形態と同様であり、同様に作動するので説
明を省略する。Further, in the second embodiment, the fitting portion (32) of the male screw structure is attached to the fitting tip portion (33) of the filling fitting (31).
Has been formed. However, it goes without saying that the structure of the fitting portion of the present invention can adopt any structure corresponding to the outlet nozzle (6) of the valve device. The other structure is the same as that of the above-described first embodiment and operates in the same manner, so the description thereof will be omitted.

【００３９】上記の第１実施形態及び第２実施形態で
は、いずれも封止部材の封止端面を平面状に形成し、連
通路の周壁に設ける被シール部はこの周壁の出口路に対
面する端面に形成したが、本発明の封止部材は上記の形
状に限定されない。即ち、図７に示す第３実施形態で
は、上記の封止部材(42)を先細の円錐形状に形成し、こ
の円錐面に封止面(44)を形成してある。この場合は、減
圧部材(17)に形成される連通路(25)は、出口路(10)側端
部が外拡がり形状に形成され、この外拡がりの周壁(25
ａ)の内面に上記の封止面(44)と対応する被シール部(2
8)が形成される。In both the first and second embodiments described above, the sealing end surface of the sealing member is formed in a flat shape, and the sealed portion provided on the peripheral wall of the communication passage faces the outlet passage of this peripheral wall. Although formed on the end face, the sealing member of the present invention is not limited to the above shape. That is, in the third embodiment shown in FIG. 7, the sealing member (42) is formed in a tapered conical shape, and the conical surface is formed with the sealing surface (44). In this case, the communication passage (25) formed in the decompression member (17) is formed such that the end portion on the outlet passage (10) side is formed in an outwardly expanding shape, and the peripheral wall (25
The sealed surface (2) corresponding to the sealing surface (44) is formed on the inner surface of (a).
8) is formed.

【００４０】また、図８に示す第４実施形態では、封止
部材(42)の周面にＯリング(45)を装着してこのＯリング
(45)の外面に封止面(44)を形成してある。この場合は、
連通路(25)の周壁(25ａ)のうち、内面に被シール部(28)
が形成される。上記第３実施形態及び第４実施形態で
は、いずれも封止部材(42)が揺動することにより連通路
(25)内へ円滑に案内され、封止面(44)が被シール部(28)
の全体に隙間なく接当する。In the fourth embodiment shown in FIG. 8, the O-ring (45) is attached to the peripheral surface of the sealing member (42) and the O-ring (45) is attached.
A sealing surface (44) is formed on the outer surface of (45). in this case,
Of the peripheral wall (25a) of the communication passage (25), the sealed portion (28) is formed on the inner surface.
Is formed. In both the third embodiment and the fourth embodiment, the communication path is formed by the rocking of the sealing member (42).
It is smoothly guided into (25), and the sealing surface (44) is the sealed part (28).
The whole of is touched without a gap.

【００４１】[0041]

【発明の効果】本発明は上記のように構成され作用する
ことから、次の効果を奏する。Since the present invention is constructed and operates as described above, it has the following effects.

【００４２】（１）連通路の周壁は、出口路に対面する
端面に連通路を取り囲む環状の被シール部を備えている
ので、この被シール部に充填金具の封止部材を接当させ
るだけで連通路を蓋する状態に封止できる。これによ
り、減圧部材を閉じることなく減圧弁の出口路から入口
路へフレッシュガスを供給することができる。そして上
記の減圧弁には、前記従来技術で必要とされた可動部材
を設ける必要がないので、減圧弁を簡単な構造にできる
うえ、可動部材の収容スペースを省略してコンパクトに
構成することができる。(1) Since the peripheral wall of the communication passage is provided with an annular sealed portion surrounding the communication passage on the end face facing the outlet passage, only the sealing member of the filling metal fitting is brought into contact with this sealed portion. It is possible to seal the communication passage with a lid. Thereby, fresh gas can be supplied from the outlet passage of the pressure reducing valve to the inlet passage without closing the pressure reducing member. Since the pressure reducing valve does not need to be provided with the movable member required in the conventional technique, the pressure reducing valve can have a simple structure and can be configured compactly by omitting the accommodation space of the movable member. it can.

【００４３】（２）上記の封止部材は上記の突出部材に
揺動自在に付設してあるので、この封止部材を上記の環
状の被シール部に接当させる際、その押圧力で封止部材
を揺動させて、この封止部材の封止面を被シール部の全
体に隙間なく接当させることができる。この結果、連通
路を封止部材で蓋した状態に封止でき、出口路から作動
室へのフレッシュガスの流入を確実に阻止することがで
きる。(2) Since the above-mentioned sealing member is swingably attached to the above-mentioned protruding member, when the sealing member is brought into contact with the above-mentioned annular sealed portion, the sealing member is sealed by the pressing force thereof. The stop member can be swung so that the sealing surface of the sealing member can be brought into contact with the entire sealed portion without a gap. As a result, the communication passage can be sealed with the sealing member, and the inflow of fresh gas from the outlet passage into the working chamber can be reliably prevented.

【図面の簡単な説明】[Brief description of drawings]

【図１】減圧弁を備えるバルブ装置の一部破断図であ
る。FIG. 1 is a partially cutaway view of a valve device including a pressure reducing valve.

【図２】上記の減圧弁の断面図である。FIG. 2 is a sectional view of the pressure reducing valve.

【図３】本発明の第１実施形態を示す、ガス充填装置の
断面図である。FIG. 3 is a cross-sectional view of the gas filling device according to the first embodiment of the present invention.

【図４】バルブ装置に装着したガス充填装置の封止部材
近傍を拡大した断面図である。FIG. 4 is an enlarged cross-sectional view of the vicinity of a sealing member of a gas filling device mounted on a valve device.

【図５】ガス充填装置を装着した状態の減圧弁の断面図
である。FIG. 5 is a cross-sectional view of a pressure reducing valve with a gas filling device attached.

【図６】本発明の第２実施形態を示す、ガス充填装置の
断面図である。FIG. 6 is a cross-sectional view of a gas filling device showing a second embodiment of the present invention.

【図７】本発明の第３実施形態を示す、図４相当図であ
る。FIG. 7 is a view corresponding to FIG. 4, showing a third embodiment of the present invention.

【図８】本発明の第４実施形態を示す、図４相当図であ
る。FIG. 8 is a view corresponding to FIG. 4, showing a fourth embodiment of the present invention.

【符号の説明】[Explanation of symbols]

８…入口路、 ９…減圧弁、 10…出口路、 14…減圧
弁座、 17…減圧部材、 24…作動室、 25…連通路、
25ａ…連通路(25)の周壁、 28…被シール部、 30…
ガス充填装置、 31…充填金具、 33…金具先端部、
34…充填路、35…支持部材、 36…吐出口、 37…突出
部材、 38…突出部材(37)の先端部、40…付勢手段(付
勢バネ)、 42…封止部材。8 ... Inlet passage, 9 ... Pressure reducing valve, 10 ... Outlet passage, 14 ... Pressure reducing valve seat, 17 ... Pressure reducing member, 24 ... Working chamber, 25 ... Communication passage,
25a ... peripheral wall of communication passage (25), 28 ... sealed portion, 30 ...
Gas filling device, 31 ... Filling metal fitting, 33 ... Metal fitting tip,
34 ... Filling path, 35 ... Support member, 36 ... Discharge port, 37 ... Projecting member, 38 ... Tip of projecting member (37), 40 ... Biasing means (biasing spring), 42 ... Sealing member.

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 充填金具(31)からのフレッシュガスを減
圧弁(９)の出口路(10)から入口路(８)へ逆方向に供給す
るガス充填装置であって、 上記の減圧弁(９)は入口路(８)から流入するガス圧力に
よって減圧部材(17)を減圧弁座(14)から離間させると共
に、作動室(24)の圧力によって上記の減圧部材(17)を減
圧弁座(14)に近接させるように構成してあり、 上記の減圧部材(17)は上記出口路(10)を作動室(24)へ連
通させるための連通路(25)を有し、この連通路(25)の周
壁(25ａ)は連通路(25)を取り囲む環状の被シール部(28)
を備えており、 上記の充填金具(31)内に充填路(34)を形成して、この充
填路(34)を上記の出口路(10)に連通させ、 上記の充填金具(31)は、前記の減圧部材(17)へ向けて突
出する突出部材(37)を備え、 この突出部材(37)の上記の減圧部材(17)側の先端部(38)
に封止部材(42)を揺動自在に付設して、その封止部材(4
2)を前記の被シール部(28)に封止接当させることによ
り、前記の出口路(10)へ供給された前記フレッシュガス
が前記の作動室(24)へ流れるのを阻止するように構成し
たことを特徴とする、ガス充填装置。1. A gas filling device for supplying fresh gas from a filling metal fitting (31) from an outlet passage (10) of a pressure reducing valve (9) to an inlet passage (8) in the reverse direction, wherein the pressure reducing valve ( 9) separates the pressure reducing member (17) from the pressure reducing valve seat (14) by the pressure of the gas flowing from the inlet passage (8), and causes the pressure reducing member (17) to move the pressure reducing member (17) by the pressure of the working chamber (24). The pressure reducing member (17) has a communication passage (25) for communicating the outlet passage (10) with the working chamber (24). The peripheral wall (25a) of (25) is an annular sealed portion (28) surrounding the communication passage (25).
The filling passage (34) is formed in the filling metal fitting (31), the filling passage (34) is communicated with the outlet passage (10), and the filling metal fitting (31) is The pressure reducing member (17) is provided with a projecting member (37) projecting toward the depressurizing member (17).
A sealing member (42) is swingably attached to the sealing member (4
By sealing and contacting 2) to the sealed portion (28), the fresh gas supplied to the outlet passage (10) is prevented from flowing into the working chamber (24). A gas filling device characterized by being configured. 【請求項２】 上記の突出部材(37)を上記の充填金具(3
1)に上記の減圧部材(17)へ向けて進退自在に支持して、
この突出部材(37)を付勢手段(40)によって上記の減圧部
材(17)側へ付勢した、請求項１に記載のガス充填装置。2. The filling member (3) is provided with the protruding member (37).
1) Supporting the pressure reducing member (17) so that it can move back and forth,
The gas filling device according to claim 1, wherein the projecting member (37) is biased toward the pressure reducing member (17) by a biasing means (40). 【請求項３】 上記の充填金具(31)の金具先端部(33)
に、上記の充填路(34)を前記の出口路(10)へ連通させる
ための吐出口(36)を設けた、請求項１または請求項２に
記載のガス充填装置。3. The metal fitting tip portion (33) of the filling metal fitting (31).
The gas filling device according to claim 1 or 2, further comprising a discharge port (36) for communicating the filling passage (34) with the outlet passage (10). 【請求項４】 前記の突出部材(37)を筒状に形成して、
その突出部材(37)の筒状壁に、前記の充填路(34)を前記
の出口路(10)へ連通させるための吐出口(36)を設けた、
請求項１または請求項２に記載のガス充填装置。4. The protruding member (37) is formed into a cylindrical shape,
The cylindrical wall of the projecting member (37) is provided with a discharge port (36) for communicating the filling passage (34) with the outlet passage (10),
The gas filling apparatus according to claim 1 or 2.