JPH01116398A - Gas feeding device - Google Patents

Gas feeding device

Info

Publication number
JPH01116398A
JPH01116398A JP27387587A JP27387587A JPH01116398A JP H01116398 A JPH01116398 A JP H01116398A JP 27387587 A JP27387587 A JP 27387587A JP 27387587 A JP27387587 A JP 27387587A JP H01116398 A JPH01116398 A JP H01116398A
Authority
JP
Japan
Prior art keywords
gas
pressure
rotor
flow path
oxygen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP27387587A
Other languages
Japanese (ja)
Inventor
Katsumi Yamato
克己 大和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DAIWA SANKI NISHI KK
Original Assignee
DAIWA SANKI NISHI KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DAIWA SANKI NISHI KK filed Critical DAIWA SANKI NISHI KK
Priority to JP27387587A priority Critical patent/JPH01116398A/en
Publication of JPH01116398A publication Critical patent/JPH01116398A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

PURPOSE:To prevent any rise in the internal pressure of a vessel up to more than the required level and thereby enhance the safty by securing discharge of liquified gas even when the changeover of a selector valve is insufficient. CONSTITUTION:A selector valve 8 mounted in the exhaust passage of a vessel is constructed with a body 21 and a rotor 23, in such a way that a passage hole 22 is not colsed by the inside surface of the body 21 even when the shaft angle of the rotor 23 is situated in any aximuth by forming the inlet and the outlet on the inner surface of the body 21 adjacent to each other or forming the passage hole 22 of the rotor 23 large. Thereby, the passage is not interrupted by insufficient changeover even when the rotor 23 comes in a position where the passage hole 22 is colsed by the inner surface of the body 21, and the discharge of the gas is always secored.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、液化ガスを気化して一定量のガスを供給す
るガス供給装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas supply device that vaporizes liquefied gas and supplies a certain amount of gas.

（従来の技術〕 液化ガス供給装置は、例えば小型で持ち運びのできるも
のに、酸素吸入に使用する酸素供給装置がある。液化ガ
スは急激に蒸発気化させると装置が爆発するおそれがあ
るため、内圧が必要以上に高くならない構造にしなけれ
ばならない。(Prior art) For example, a small and portable liquefied gas supply device is an oxygen supply device used for oxygen inhalation.If the liquefied gas evaporates rapidly, the device may explode, so the internal pressure The structure must be such that it does not become unnecessarily high.

また、従来、液化ガスのボンベには高圧ガス容器が使用
されていたが、高圧ガス容器は、大きな強度を必要とし
、容器検査等も厳しく、液化ガスの充填やその後の貯蔵
にも細心の注意を払わねばならなかった。そのため、上
記装置を高圧ガス容器を使用しないでよい構造、言い変
えれば高圧ガス取締法における「密閉しないで用いられ
る容器」の構造にすることが求められた。「密閉しない
で用いられる容器」は、高圧ガス容器はどの強度は要求
されない代わりに、いかなる場合にも容器からガスが流
出するようにしなければならなかった。In addition, high-pressure gas containers have traditionally been used for liquefied gas cylinders, but high-pressure gas containers require great strength, have strict container inspections, and require careful attention when filling with liquefied gas and storing it afterwards. had to pay. Therefore, there was a demand for the above-mentioned device to have a structure that does not require the use of a high-pressure gas container, in other words, to have a structure that is a "container that is used without being sealed" as defined in the High Pressure Gas Control Law. ``Containers used without sealing'' do not require high-pressure gas containers to have any strength, but must ensure that gas can escape from the container in any case.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

そこで、この発明は、流路の切換弁において、切り換え
が不十分であっても流路が遮断されないようにすること
を目的としている。Therefore, an object of the present invention is to prevent the flow path from being blocked even if switching is insufficient in a flow path switching valve.

〔問題点を解決するための手段〕[Means for solving problems]

この発明は、流路に取り付けた切換弁（８）を本体（２
１）と回転子（２３）から構成し、本体（２１）内面の
出入口を近接させて形成するかあるいは回転子（２３）
の通孔（２２）を大きく形成し、回転子（２３）の軸角
度がどの方位にあっても通孔（２２）が本体（２１）内
面によって閉塞されないようにしたものである。In this invention, the switching valve (8) attached to the flow path is connected to the main body (2).
1) and a rotor (23), and the entrance and exit ports on the inner surface of the body (21) are formed close to each other, or the rotor (23)
The through hole (22) is formed to be large so that the through hole (22) is not blocked by the inner surface of the main body (21) no matter what direction the rotor (23) is oriented.

〔作用〕[Effect]

この発明は、切換弁（８）の回転子（２３）の軸角度が
どの方位にあっても回転子（２３）の通孔（２２）が本
体（２１）内面によって閉塞されていようにしている。In this invention, the through hole (22) of the rotor (23) is closed by the inner surface of the main body (21) regardless of the axial angle of the rotor (23) of the switching valve (8). .

従って切り換えが不十分なために通孔（２２）が本体（
２１）内面に塞がれる位置に回転子（２３）が来ても、
流路が遮断されることはなく、常にガスの放出を確保す
ることができる。Therefore, due to insufficient switching, the through hole (22)
21) Even if the rotor (23) comes to a position where it is blocked by the inner surface,
The flow path is never blocked, and gas release can be ensured at all times.

〔実施例〕〔Example〕

この発明の一実施例を図面に基づき説明する。 An embodiment of this invention will be described based on the drawings.

第１図は、液体酸素を貯蔵した医療用の酸素供給装置を
示す概略図である。この装置は、小型で持ち運ぶことが
でき、常時患者に酸素吸入ができるようになっている。FIG. 1 is a schematic diagram showing a medical oxygen supply device storing liquid oxygen. This device is small and portable, and allows patients to receive oxygen at all times.

この装置の概略を以下に説明する。The outline of this device will be explained below.

この装置は、ボックス（１）内の容器（２）に３本のパ
イプを挿入してあり、１本は液体酸素（液相（３））に
通じるパイプ（液相流路（４））であり、１本は気相（
５）に通じるパイプ（気相流路（６））であり、１本は
液注入用のパイプである′、液相流路（４）は、流路中
に気化コイル（７）を接続し、末端を切換弁（８）に接
続している。気相流路（６）は、加温コイル（９）、傾
斜開放弁（１０）　、排気バッグ（１１）　、保圧弁（
１２）を順次接続してあり、末端を液相流路（４）に接
続している（合流点Ｃ）。また、加温コイル（９）の上
流側では、気相流路（６）から分岐した排気流路（１３
）を切換弁（８）に接続している。切換弁（８）の出口
は２方あり、それぞれに吸入用パイプ（１４）と排気用
パイプ（１５）を接続している。尚、（１６）は蓋、（
１７）はキャップ、（１８）は液注入ノズル、（１９）
は流量計である。This device has three pipes inserted into a container (2) inside a box (1), one of which is a pipe (liquid phase channel (4)) that leads to liquid oxygen (liquid phase (3)). Yes, one is in the gas phase (
5) (vapor phase channel (6)), one of which is a pipe for liquid injection', and the liquid phase channel (4) connects the vaporizing coil (7) in the channel. , the end is connected to the switching valve (8). The gas phase flow path (6) includes a heating coil (9), an inclined release valve (10), an exhaust bag (11), and a pressure holding valve (
12) are connected in sequence, and the end is connected to the liquid phase flow path (4) (merging point C). Further, on the upstream side of the heating coil (9), an exhaust flow path (13) branched from the gas phase flow path (6).
) is connected to the switching valve (8). The switching valve (8) has two outlets, each of which is connected to an intake pipe (14) and an exhaust pipe (15). In addition, (16) is the lid, (
17) is the cap, (18) is the liquid injection nozzle, (19)
is a flow meter.

容器（２）は断熱ケース（２０）によって覆われている
。The container (2) is covered by a heat insulating case (20).

切換弁（８）は、第２図に示すように、四方に出入口の
ある本体（２１）に、１本の通孔（２２）を有する回転
子（２３）を回転自在に嵌合している。As shown in Fig. 2, the switching valve (8) has a main body (21) with openings on all sides and a rotor (23) having one through hole (22) fitted in a rotatable manner. .

そして、本体（２１）内面の入口（２４）と出口（２５
）を近接させるかあるいは回転子（２３）の通孔（２２
）を大きく形成して、本体（２１）の入口（２４）が出
口（２５）に必ず連通ずるように形成している傾斜開放
弁（１０）と排気バッグ（１１）は、容器（２）を振動
させたり横転させたりして比較的温度の高い容器（２）
上部に液体酸素が触れ、突発的に気相（５）のガス圧が
上昇した時、ガスをパージするものである。傾斜開放弁
（１０）は容器（２）が４ｆ以上傾斜すると閉止体（２
６）が動き排気するものであり、排気バッグ（１１）は
一定圧力以上になるとチューブ（２７）が膨らみ支柱（
２８）との間に隙間が生じて排気するものである。Then, an inlet (24) and an outlet (25) on the inner surface of the main body (21).
) in close proximity or through holes (22) in the rotor (23).
) is formed so that the inlet (24) of the main body (21) always communicates with the outlet (25). Containers that are exposed to relatively high temperatures due to vibration or overturning (2)
When liquid oxygen comes into contact with the upper part and the gas pressure of the gas phase (5) suddenly increases, the gas is purged. The tilt release valve (10) opens the closing body (2) when the container (2) tilts by 4 f or more.
6) moves to exhaust the air, and when the exhaust bag (11) reaches a certain pressure or higher, the tube (27) expands and the strut (
28), and a gap is created between the two and the air is exhausted.

保圧弁（１２）は、開放した流れに弁体（２９）によっ
て抵抗を与え、容器（２）の気相（５）にガス圧（押し
出し圧力）を発生させるものである。The pressure holding valve (12) provides resistance to the opened flow using the valve body (29) and generates gas pressure (pushing pressure) in the gas phase (5) of the container (2).

そして、ガス圧が設定値未満であれば弁体（２９）は閉
じて圧を保ち、設定値に達すると、コイルスプリング（
３０）の押圧力に抗して受圧板（３１）が左方へ膨み、
弁体（２９）が相応の開度を保ってバランスする。設定
値を越えると弁体（２９）はさらに開く。If the gas pressure is less than the set value, the valve body (29) closes to maintain the pressure, and when the set value is reached, the coil spring (
30), the pressure receiving plate (31) expands to the left,
The valve body (29) maintains a suitable opening degree and balances. When the set value is exceeded, the valve body (29) opens further.

次に、以上の構成から成る酸素供給装置の作動について
説明する。Next, the operation of the oxygen supply device having the above configuration will be explained.

まず、液注入ノズル（１８）から容器（２）へ液体酸素
を充填し、Ｍ　（１６）にキャップ（１７）を取り付け
、保圧弁（１２）を一定圧力に設定する。First, liquid oxygen is filled into the container (2) from the liquid injection nozzle (18), a cap (17) is attached to M (16), and the pressure holding valve (12) is set to a constant pressure.

容器（２）内では外部からの熱によって液体酸素が気化
し保圧弁（１２）の抵抗により押し出し圧力が発生する
。この押し出し圧力によって、液体酸素が液相流路（４
）に送り出され、気化コイル（７）で外部との熱交換に
よって気化され、切換弁（８）に至り外部へ供給される
。Inside the container (2), liquid oxygen is vaporized by heat from the outside, and extrusion pressure is generated due to the resistance of the pressure holding valve (12). This extrusion pressure causes liquid oxygen to move through the liquid phase flow path (4
), is vaporized by heat exchange with the outside in the vaporizing coil (7), reaches the switching valve (8), and is supplied to the outside.

気相（５）のガス圧が保圧弁（１２）の設定値で安定し
ている場合酸素は両流路（４）（６）から流れ、設定値
未満では液相流路（４）が優先し、設定値を越えれば気
相流路（６）が優先する。When the gas pressure in the gas phase (5) is stable at the set value of the pressure holding valve (12), oxygen flows from both flow paths (4) and (6), and when it is less than the set value, priority is given to the liquid phase flow path (4). However, if the set value is exceeded, the gas phase flow path (6) takes priority.

容器（２）を振動させたり横転させたりして比較的温度
の高い容器（２）上部に液体酸素が触れて気化し、ガス
圧が急激に保圧弁（１２）の設定値以上に上昇した場合
、液体より流体抵抗の少ないガスは液相流路（４）より
も速く合流点Ｃに達し、合流点Ｃは気相（５）と同一圧
力になり液相流路（４）の流れは遮断される。つまり、
保圧弁（１２）の設定値を越えて昇圧すれば弁体（２９
）がさらに開き、保圧弁（１２）の前後は同圧となる。If the container (2) is vibrated or rolled over, liquid oxygen comes into contact with the upper part of the container (2), which is relatively hot, and vaporizes, causing the gas pressure to suddenly rise above the set value of the pressure-holding valve (12). , the gas, which has lower fluid resistance than the liquid, reaches the confluence point C faster than the liquid phase flow path (4), and the confluence point C has the same pressure as the gas phase (5), cutting off the flow in the liquid phase flow path (4). be done. In other words,
If the pressure rises beyond the set value of the pressure holding valve (12), the valve body (29)
) further opens, and the pressure becomes the same before and after the pressure-holding valve (12).

合流点Ｃでは両流路（４）（６）が同圧となるため、液
相流路（４）には入口の押し出し圧力と同じ圧力が出口
（合流点Ｃ）にもかかる。その結果、液相流路（４）の
流れは抑えられ、合流後の酸素の流れは気相流路（６）
が主体となる。しかし、気相流路（６）が主体となって
いる時間は短か（、弁体（２９）が開くとガス圧が急速
に下がり設定値に戻る。このように、両流路（４）（６
）はその抵抗に向って常に均衡しようとし、突発的なガ
ス圧の変動によって一時的に不安定になっても、短時間
に安定する。以上から、安定した微圧で酸素を供給する
ことができ、従って、酸素吸入のように人の生命にかか
わる場合について定量の酸素を安全かつ安定して継続的
に供給することができる。Since both channels (4) and (6) have the same pressure at the confluence point C, the same pressure as the extrusion pressure at the inlet of the liquid phase channel (4) is also applied to the outlet (confluence point C). As a result, the flow in the liquid phase channel (4) is suppressed, and the flow of oxygen after merging is reduced to the gas phase channel (6).
becomes the main subject. However, the time when the gas phase flow path (6) is the main one is short (when the valve body (29) opens, the gas pressure rapidly decreases and returns to the set value. In this way, both flow paths (4) (6
) always tries to balance itself against its resistance, and even if it becomes temporarily unstable due to a sudden change in gas pressure, it stabilizes in a short time. As described above, oxygen can be supplied at a stable low pressure, and therefore, a fixed amount of oxygen can be safely, stably, and continuously supplied in cases where human life is affected, such as oxygen inhalation.

この発明は、前記のような切換弁（８）を流路に接続し
ている。In this invention, the switching valve (8) as described above is connected to the flow path.

従って、回転子（２３）を吸入あるいは排気の位置に完
全に回せば特定の方向にのみガスを放出することができ
る（第１図）。第２図（ａ）のような不完全な回転によ
って通孔（２２）両側が本体（２１）内面に塞がれる位
置に来ても、入口（２４）と出口（２５）　は連通し、
ガスの放出を確保できる。Therefore, by completely turning the rotor (23) to the intake or exhaust position, gas can be released only in a specific direction (FIG. 1). Even if the through hole (22) reaches a position where both sides are blocked by the inner surface of the main body (21) due to incomplete rotation as shown in FIG.
Gas release can be ensured.

その結果、流路内のガス圧ひいては気相（５）のガス圧
の上昇を防ぎ、比較的強度の弱い容器であってもその破
壊を防止することができる。As a result, it is possible to prevent the gas pressure in the flow path and, in turn, the gas pressure in the gas phase (5) from increasing, and even if the container is relatively weak, its destruction can be prevented.

また、液体酸素の残留中に使用を中止して保圧弁（１２
）を減量いっばいに操作しても、最低限自然気化量の酸
素は放出を続ける。Also, stop using the pressure holding valve (12) while liquid oxygen remains.
) even if the amount of oxygen is reduced all at once, the minimum amount of naturally vaporized oxygen will continue to be released.

〔発明の効果〕〔Effect of the invention〕

この発明は、上述のような構成を有するものであり、従
って、切換弁（８）の切り換えが不十分であっても液化
ガスの放出が確保され容器のガス圧が高圧になることが
ない。従って、安全であって、しかも液化ガスのボンベ
に高圧ガス容器を使用しないで済むことから、製造、取
り扱いが容易で安価な、ガス供給装置を提供することが
できるThe present invention has the above-described configuration, and therefore, even if the switching of the switching valve (8) is insufficient, the release of the liquefied gas is ensured and the gas pressure in the container does not become high. Therefore, it is possible to provide a gas supply device that is safe, easy to manufacture and handle, and inexpensive because it does not require the use of a high-pressure gas container for the liquefied gas cylinder.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの発明の一実施例である酸素供給装置の概略
図。第２図は切換弁の図面であって、（ａ）は流路の横
断面図、（ｂ）は縦断面図である（８）・・・切換弁　
　（２１）・・・本体　（２２）・・・通孔（２３）・
・・回転子FIG. 1 is a schematic diagram of an oxygen supply device that is an embodiment of the present invention. Figure 2 is a diagram of the switching valve, where (a) is a cross-sectional view of the flow path, and (b) is a longitudinal sectional view (8)...Switching valve
(21)...Body (22)...Through hole (23)
・Rotor

Claims (1)

【特許請求の範囲】[Claims] １．流路に取り付けた切換弁（８）を本体（２１）と回
転子（２３）から構成し、本体（２１）内面の出入口を
近接させて形成するかあるいは回転子（２３）の通孔（
２２）を大きく形成し、回転子（２３）の軸角度がどの
方位にあっても通孔（２２）が本体（２１）内面によっ
て閉塞されないようにしたことを特徴とするガス供給装
置。1. The switching valve (8) attached to the flow path is composed of a main body (21) and a rotor (23), and the entrance and exit ports on the inner surface of the main body (21) are formed close to each other, or the through holes (
22) is formed large so that the through hole (22) is not blocked by the inner surface of the main body (21) regardless of the axis angle of the rotor (23).
JP27387587A 1987-10-29 1987-10-29 Gas feeding device Pending JPH01116398A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27387587A JPH01116398A (en) 1987-10-29 1987-10-29 Gas feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27387587A JPH01116398A (en) 1987-10-29 1987-10-29 Gas feeding device

Publications (1)

Publication Number Publication Date
JPH01116398A true JPH01116398A (en) 1989-05-09

Family

ID=17533785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27387587A Pending JPH01116398A (en) 1987-10-29 1987-10-29 Gas feeding device

Country Status (1)

Country Link
JP (1) JPH01116398A (en)

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