JP5202393B2 - LP gas filling system - Google Patents

LP gas filling system Download PDF

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JP5202393B2
JP5202393B2 JP2009051970A JP2009051970A JP5202393B2 JP 5202393 B2 JP5202393 B2 JP 5202393B2 JP 2009051970 A JP2009051970 A JP 2009051970A JP 2009051970 A JP2009051970 A JP 2009051970A JP 5202393 B2 JP5202393 B2 JP 5202393B2
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JP2010203569A (en
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正明 糠野
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上野ガス株式会社
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Description

本発明は容器にＬＰＧ液を充填する際に用いられるＬＰガス充填システムに関し、より詳しくはＬＰガス容器に取り付けられた充填バルブが、地震発生時などに外れてしまいガス容器からガスが放出することを阻止するためのＬＰガス充填システムに関する。   The present invention relates to an LP gas filling system used when a container is filled with LPG liquid. More specifically, the filling valve attached to the LP gas container is disconnected when an earthquake occurs, and gas is released from the gas container. The present invention relates to an LP gas filling system for preventing the above.

ＬＰガス容器内のＬＰガスの残量が少なくなったり、空になった場合は、業者がＬＰガス容器をトラック等で運搬し、ＬＰガス充填施設においてＬＰガス容器にＬＰＧ液を充填し、再度使用場所へ搬送し、使用場所に設置するということが行われる。ＬＰＧ液充填施設では、ターンテーブル上へ搬入される未充填の容器毎に、所定量のＬＰＧ液を自動的に充填するＬＰガス充填システム（例えば特許文献１）が汎用されている。   When the remaining amount of LP gas in the LP gas container is low or emptied, the contractor transports the LP gas container with a truck etc., fills the LP gas container with the LPG liquid at the LP gas filling facility, and again It is transported to the place of use and installed at the place of use. In the LPG liquid filling facility, an LP gas filling system (for example, Patent Document 1) that automatically fills a predetermined amount of LPG liquid for each unfilled container carried on the turntable is widely used.

この充填システムにおいて使用される充填バルブとして、いわゆるクイックバルブと呼ばれる空気圧を利用してガス容器バルブに充填バルブのノズルを差し込む充填バルブが用いられることがある（例えば特許文献２）。以下、図３及び図４を用いてこの充填バルブの作用を概説する。   As a filling valve used in this filling system, a filling valve that inserts a nozzle of a filling valve into a gas container valve by using a so-called quick valve is sometimes used (for example, Patent Document 2). The operation of this filling valve will be outlined below with reference to FIGS.

図３の状態からエア供給管１２及びケーシング２に設けた供給路１３を通じて空気室６に圧縮空気が送り込まれると、ベローフラム４は図４に示すようにコイルスプリング１５に抗して図中左方へ移動し、これに伴いシリンダ５の先端１１が摺動ノズル９のストッパー環１０を押圧して先端９ａが容器バルブ１６に気密に当接する。これと同時にガスシート７と小径部８との間は、図４における前摺動管３ａの先端１１とストッパー環１０との間隙だけ空間が生じるため弁が開く。これに伴い摺動管３及び摺動ノズル９を通ってＬＰＧ液が容器内に充填されるのである。   When the compressed air is fed into the air chamber 6 through the air supply pipe 12 and the supply passage 13 provided in the casing 2 from the state of FIG. 3, the bellows frame 4 is opposed to the coil spring 15 as shown in FIG. Accordingly, the tip 11 of the cylinder 5 presses the stopper ring 10 of the sliding nozzle 9, and the tip 9 a comes into airtight contact with the container valve 16. At the same time, a space is created between the gas sheet 7 and the small diameter portion 8 by the gap between the tip 11 of the front sliding tube 3a and the stopper ring 10 in FIG. Accordingly, the LPG liquid is filled into the container through the sliding tube 3 and the sliding nozzle 9.

他方でエア供給管１２からの空気の送入を遮断すると、コイルバネ１５によりシリンダ５及びベローフラム４は図中における右方向に移動し、空気室６内の空気は排気路１４より充填バルブ外に排出され、摺動ノズル９は容器バルブ１６から外れる。この際、摺動ノズル９及び該摺動ノズル９と固定されたガスシート７はコイルスプリング１７により図４における左方向に移動し、そして図３に示すように小径部８とガスシート７が当接し、つまりは弁が閉じられた状態に至るものである。すなわちＬＰＧ液の流路が遮断されるに至るものである。   On the other hand, when the air supply from the air supply pipe 12 is cut off, the cylinder 5 and the bellows frame 4 are moved rightward in the drawing by the coil spring 15, and the air in the air chamber 6 is discharged from the exhaust passage 14 to the outside of the filling valve. Then, the sliding nozzle 9 is detached from the container valve 16. At this time, the sliding nozzle 9 and the gas sheet 7 fixed to the sliding nozzle 9 are moved leftward in FIG. 4 by the coil spring 17, and the small diameter portion 8 and the gas sheet 7 are brought into contact with each other as shown in FIG. Contact, that is, the valve is closed. That is, the flow path of the LPG liquid is blocked.

尚、図示していないが圧縮空気送入時には送入路が開放されると共に排気路が密閉され、排気時には送入路が密閉されると共に排気路が開放される弁体が介在させてある。
特公平４−１８１８８号公報 特公昭５０−３０８５７号公報 Although not shown in the figure, a valve body is interposed that opens the inlet path and seals the exhaust path when compressed air is fed, and seals the inlet path and opens the exhaust path when exhausting.
Japanese Patent Publication No. 4-18188 Japanese Patent Publication No. 50-30857

ＬＰガス充填施設においてＬＰガス容器にＬＰＧ液を充填している際に、大規模地震やその他種々の衝撃によってＬＰ液供給設備に破損事故が発生すると、ガス容器からガスが放出され爆発等の災害が発生する恐れがある。   When an LP gas supply facility is filled with LPG liquid and the LP liquid supply equipment is damaged due to a large-scale earthquake or other various impacts, gas is released from the gas container and a disaster such as an explosion occurs. May occur.

つまり上述のクイックバルブと呼ばれる充填バルブを用いてガス容器にＬＰＧ液を充填している最中に大規模地震が発生し、エア供給管に破損が生じるとエア圧が低下する事態が生じる。殊にエア供給管のうち、地下に埋設されている部分に破損が生じる可能性が高い。かかる事態に至ると上述のように充填バルブを構成する摺動ノズルは、ガス容器を構成する容器バルブから外れる。   In other words, a large-scale earthquake occurs while the gas container is filled with the LPG liquid using the above-described filling valve, and the air pressure is lowered when the air supply pipe is damaged. In particular, there is a high possibility that the air supply pipe is damaged in a portion buried underground. When such a situation is reached, the sliding nozzle constituting the filling valve as described above is disengaged from the container valve constituting the gas container.

このとき上述のように充填バルブにおいては自動的に弁が閉じられるので、充填バルブからＬＰＧ液が流出する恐れはない。しかし、容器バルブは開かれたままであるので、該容器バルブを通じて気化したＬＰガスが放出され、あるいは地震でガス容器が転倒すると容器バルブを通じてＬＰＧ液が流出することとなり、災害発生の危険性が生じるのである。   At this time, since the valve is automatically closed in the filling valve as described above, there is no possibility that the LPG liquid flows out from the filling valve. However, since the container valve remains open, the vaporized LP gas is released through the container valve, or when the gas container falls down due to an earthquake, the LPG liquid flows out through the container valve, resulting in a risk of disaster occurrence. It is.

そこで本発明は地震等によりエア供給管に破損が生じても充填ノズルが容器バルブから外れない、つまりはＬＰガスの放出やＬＰＧ液の流出が生じないＬＰガス充填システム を提供することを目的とする。   Therefore, the present invention has an object to provide an LP gas filling system in which the filling nozzle does not come off from the container valve even if the air supply pipe is damaged due to an earthquake or the like, that is, the LP gas is not discharged or the LPG liquid does not flow out. To do.

上記課題を解決するために本発明は以下のように構成した。   In order to solve the above problems, the present invention is configured as follows.

請求項１：空気圧を利用して充填ノズルを出没自在にした充填バルブを用いたＬＰガ ス充填システムにおいて、圧縮空気供給装置から充填バルブに圧縮空気を 供給するエア供給管路の地上部位に予備圧縮空気供給装置を介在させた。     Claim 1: In an LP gas filling system using a filling valve in which a filling nozzle can be moved in and out using air pressure, it is reserved in a ground part of an air supply line for supplying compressed air from the compressed air supply device to the filling valve. A compressed air supply device was interposed.

請求項２：請求項１記載の発明において、予備圧縮空気供給装置を計量部に設けた。     Claim 2: In the invention according to claim 1, the preliminary compressed air supply device is provided in the measuring section.

以下、上述のように構成される本発明が如何に作用して課題を解決するかを概説する。   The following outlines how the present invention configured as described above works to solve the problems.

図１は本発明の概略構成図であり、図２は請求項２記載の発明の概略構成図である。   FIG. 1 is a schematic configuration diagram of the present invention, and FIG. 2 is a schematic configuration diagram of the invention of claim 2.

本発明においては圧縮空気供給装置たるエアコンプレッサー１８から、エア供給管１２を通じて圧縮空気が充填バルブ２３へと送られる。このエア供給管１２のうち、地上に存する部位に予備圧縮空気供給装置たるエアタンク１９が介在させてある。   In the present invention, compressed air is sent to the filling valve 23 through the air supply pipe 12 from the air compressor 18 which is a compressed air supply device. Of this air supply pipe 12, an air tank 19 as a pre-compressed air supply device is interposed at a portion existing on the ground.

地震等により管路が損傷を受ける部位は、地下埋設部位であることが多いのは上述の通りである。しかるに、本発明においてはエアタンク１９が地上部位に設けてあることから、地震等においてエアタンク１９から充填バルブ２３に至るエア供給管１２が損傷を受けることは稀である。つまり、仮にエアコンプレッサー１８からエアタンク１９に至るエア供給管１２が損傷を受け、エアの供給がストップしても、エアタンク１９から充填バルブ１２へのエアの供給は継続されるのである。   As described above, the site where the pipeline is damaged by an earthquake or the like is often an underground site. However, in the present invention, since the air tank 19 is provided on the ground portion, the air supply pipe 12 extending from the air tank 19 to the filling valve 23 is rarely damaged in an earthquake or the like. That is, even if the air supply pipe 12 from the air compressor 18 to the air tank 19 is damaged and the supply of air is stopped, the supply of air from the air tank 19 to the filling valve 12 is continued.

すなわち充填バルブ２３が容器バルブ１６から外れることはなく、ＬＰガスの放出やＬＰＧ液の流出を防ぐことが可能となるのである。   That is, the filling valve 23 does not come off from the container valve 16, and it is possible to prevent the release of LP gas and the outflow of LPG liquid.

また、請求項２記載の発明においては汎用のターンテーブルを利用した充填システムを構成する計量部２４に、予備圧縮空気供給装置たるエアタンク１９が設けてある。この汎用の充填システムは、充填装置の搬入路によってターンテーブルへと搬入されてくる未充填の各容器を、搬入路に配置されている計量部たる残量計測電子秤に載せて計測し、この計測値に基づいて容器毎のＬＰガス充填量をコンソール部で算出し、充填バルブを通じてガス容器にＬＰＧ液を充填するものである。   In the second aspect of the present invention, an air tank 19 serving as a precompressed compressed air supply device is provided in the measuring unit 24 constituting the filling system using a general-purpose turntable. This general-purpose filling system measures each unfilled container that is carried into the turntable by the carry-in path of the filling device on a residual quantity measuring electronic balance that is a weighing unit arranged in the carry-in path. The LP gas filling amount for each container is calculated by the console unit based on the measured value, and the gas container is filled with the LPG liquid through the filling valve.

本発明において残量計測電子秤たる計量部２４にエアタンク１９を設けたのは、上述のように地震等により管路が損傷を受ける部位は地下埋設部位であることが多いことによる。つまり、計量部２４から計量部２４に載置されるガス容器２２までの距離は短く、しかも地上部位に損ずるので損傷の恐れが非常に小さくなるのである。   In the present invention, the air tank 19 is provided in the measuring unit 24 which is a remaining amount measuring electronic scale because the portion where the pipe is damaged by an earthquake or the like as described above is often an underground portion. That is, since the distance from the measuring unit 24 to the gas container 22 placed on the measuring unit 24 is short and damages to the ground part, the risk of damage is very small.

以下、好ましい発明の一実施形態につき図面を参照しながら概説する。   Hereinafter, an embodiment of the present invention will be outlined with reference to the drawings.

本発明に係る充填システムの全体構成を示したのが図１である。この充填システムの主な構成要素は、ガス容器２２の容器バルブ１６に容易に着脱可能な充填バルブ２３、充填バルブ２３とエアコンプレッサー１８を繋ぐエア供給管１２、エア供給管１２の中途に介在させたエアタンク１９、充填バルブ２３にＬＰＧ液供給管２１を通じてＬＰＧ液を送付するＬＰＧ液貯蔵庫２０である。   FIG. 1 shows the overall configuration of the filling system according to the present invention. The main components of this filling system are a filling valve 23 that can be easily attached to and detached from the container valve 16 of the gas container 22, an air supply pipe 12 that connects the filling valve 23 and the air compressor 18, and a middle part of the air supply pipe 12. The LPG liquid storage 20 sends the LPG liquid to the air tank 19 and the filling valve 23 through the LPG liquid supply pipe 21.

エアコンプレッサー１８から供給される圧縮空気の圧力は５〜６Ｋｇ／ｃｍ２程度が好ましい。したがって、エアタンク１９から供給される圧縮空気の圧力も５〜６Ｋｇ／ｃｍ２程度が好ましい。更には、エアタンク１９の圧縮空気貯留容量は、エアコンプレッサー１８から圧縮空気の供給が止まっても充填バルブが外れない程度のものであることが必要である。 The pressure of the compressed air supplied from the air compressor 18 is preferably about 5 to 6 kg / cm 2 . Therefore, the pressure of the compressed air supplied from the air tank 19 is also preferably about 5 to 6 kg / cm 2 . Furthermore, the compressed air storage capacity of the air tank 19 needs to be such that the filling valve does not come off even when the supply of compressed air from the air compressor 18 stops.

また、エア供給管１２、殊にエアタンク１９から充填バルブ２３に至る部位のエア供給管１２は、地震等の揺れにより損傷を受けにくいゴム管等の可撓管で形成することが望まれる。   Further, it is desirable that the air supply pipe 12, particularly the air supply pipe 12 in a portion from the air tank 19 to the filling valve 23, be formed of a flexible pipe such as a rubber pipe that is not easily damaged by shaking such as an earthquake.

また、エアコンプレッサー１８とエアタンク１９を繋ぐ部位のエア供給管１２に損傷が生じた場合に、エアタンク１９からエア供給管１２を通じてエアコンプレッサー１８側に空気が流れると充填バルブ２３が容器バルブ１６から外れてしまいガス放出の危険が生じる。そこで、係る逆流を防ぐために、エアコンプレッサー１９からのみ圧縮空気が流入可能な逆止弁２５を、エアタンク１９とエアコンプレッサー１８を繋ぐエア供給管１２に介在させてある。   In addition, when the air supply pipe 12 at the portion connecting the air compressor 18 and the air tank 19 is damaged, if the air flows from the air tank 19 to the air compressor 18 through the air supply pipe 12, the filling valve 23 is detached from the container valve 16. And there is a risk of outgassing. In order to prevent such backflow, a check valve 25 into which compressed air can flow only from the air compressor 19 is interposed in the air supply pipe 12 connecting the air tank 19 and the air compressor 18.

図３は従来の空気圧を利用して充填ノズルを出没自在に構成した充填バルブの概略構成図である。図中１は引掛金具で先端を半円形状に曲げて形成してある。この引掛金具１を用いて充填バルブ２３を容器バルブ１６に取り付けるものである。３は摺動管であり、前摺動管３ａと後摺動管３ｂとにより成り、ケーシング２に気密に装着してある。４はベローフラムである。該ベローフラム４はシリンダ５と後摺動管３ｂとで挟圧されており、ケーシング２、ベローフラム４及び後摺動管３ｂで囲まれる空気室６が形成される。７はガスシートであり、このガスシート７を前摺動管３ａの小径部８に当接せしめて弁を形成する。９は摺動ノズルで、前摺動管３ａ内に装着し、且つ、ストッパー環１０を設けて前摺動管３ａの先端１１で押圧可能に形成してある。この摺動ノズル９の先端９は、図４に示すように容器バルブ１２に気密に当接するよう形成してある。   FIG. 3 is a schematic diagram of a filling valve in which a filling nozzle is configured to be able to appear and retract using conventional air pressure. In the figure, reference numeral 1 denotes a hook metal fitting whose tip is bent into a semicircular shape. The filling valve 23 is attached to the container valve 16 using the hook 1. Reference numeral 3 denotes a sliding tube, which is composed of a front sliding tube 3a and a rear sliding tube 3b, and is attached to the casing 2 in an airtight manner. 4 is a bellows frame. The bellows frame 4 is sandwiched between the cylinder 5 and the rear sliding tube 3b, and an air chamber 6 surrounded by the casing 2, the bellows frame 4 and the rear sliding tube 3b is formed. Reference numeral 7 denotes a gas sheet, which is brought into contact with the small diameter portion 8 of the front sliding tube 3a to form a valve. A sliding nozzle 9 is mounted in the front sliding tube 3a, and is provided with a stopper ring 10 so that it can be pressed by the tip 11 of the front sliding tube 3a. The tip 9 of the sliding nozzle 9 is formed so as to come into airtight contact with the container valve 12 as shown in FIG.

本発明の概略構成図。The schematic block diagram of this invention. 請求項２記載の発明の概略構成図。The schematic block diagram of invention of Claim 2. 充填バルブの概略構成図。The schematic block diagram of a filling valve. 充填バルブの概略構成図。The schematic block diagram of a filling valve.

１２・・エア供給管
２３・・充填バルブ
２４・・計量部 12. ・ Air supply pipe 23 ・ ・ Filling valve 24 ・ ・ Measuring section

Claims (1)

空気圧を利用して充填ノズルを出没自在にした充填バルブを用いたＬＰガス充填システムにおいて、残量計測電子秤たる計量部（２４）に予備圧縮空気供給装置を介在させたＬＰガス充填システム。   An LP gas filling system using a filling valve in which a filling nozzle is made to be able to appear and retract by using air pressure, wherein a pre-compressed air supply device is interposed in a metering unit (24) for measuring a remaining amount.
JP2009051970A 2009-03-05 2009-03-05 LP gas filling system Expired - Fee Related JP5202393B2 (en)

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CN106838609B (en) * 2017-03-21 2023-05-09 深圳安博智控科技有限公司 Liquefied gas intelligent filling gun
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