JP4177367B2 - Liquefied gas extraction device and extraction method - Google Patents

Liquefied gas extraction device and extraction method Download PDF

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JP4177367B2
JP4177367B2 JP2005284765A JP2005284765A JP4177367B2 JP 4177367 B2 JP4177367 B2 JP 4177367B2 JP 2005284765 A JP2005284765 A JP 2005284765A JP 2005284765 A JP2005284765 A JP 2005284765A JP 4177367 B2 JP4177367 B2 JP 4177367B2
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liquefied gas
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pressure
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JP2007092919A (en
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長之助 平野
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長之助 平野
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Description

本発明は、例えば、液化窒素のような液化ガスの取出装置及び方法に関し、更に具体的には、開放型容器内から少量の液化ガスを取り出す場合に好適な取出装置及び方法に関するものである。   The present invention relates to an apparatus and method for extracting a liquefied gas such as liquefied nitrogen, and more specifically to an extracting apparatus and method suitable for extracting a small amount of liquefied gas from an open container.

従来、液化ガスを少量使用する場合は、容器を傾けて取り出すか、あるいは、簡易取出装置などに設けられたゴム球を数回押して容器内の圧力を発生させて、容器内から取り出しているのが一般的である。   Conventionally, when a small amount of liquefied gas is used, the container is tilted and taken out, or the rubber ball provided in the simple take-out device etc. is pushed several times to generate pressure inside the container and taken out from the container. Is common.

しかしながら、容器を傾けて直接取り出す方法は、容器が大型の場合は重労働となるほか、ごく少量の液化ガスを取り出す場合には向いていない。また、簡易取出装置を利用する場合は、必ず圧力を発生させるためのゴム球や他の圧力発生機器が必要となり、必ずしも簡単な構造で手軽に利用ができるとはいえない場合もある。   However, the method of directly taking out the container by inclining the container is not suitable for taking out a very small amount of liquefied gas in addition to heavy labor when the container is large. In addition, when using a simple take-out device, a rubber ball or other pressure generating device for generating pressure is always required, and it may not always be easy to use with a simple structure.

本発明は、以上の点に着目したもので、その目的は、簡単な構成で、少量の液化ガスを容易に取り出すことができる液化ガス取出装置及び取出方法を提供することである。   The present invention focuses on the above points, and an object of the present invention is to provide a liquefied gas take-out apparatus and a take-out method that can easily take out a small amount of liquefied gas with a simple configuration.

前記目的を達成するため、本発明の液化ガス取出装置は、液化ガスの開放型容器の出入口に着脱可能に設けられる蓋,該蓋を通過するように固定されており、一方の端部開口が前記容器内の液化ガス中に浸漬され、他方の端部側が前記容器外に通じる液化ガス取出用のチューブ,該チューブの液化ガス浸漬側の端部外面に設けられており、前記液化ガス中に浸漬される容器内圧力発生用の蓄熱体,前記チューブの容器外部側に設けられており、前記液化ガスの流路の開閉ないし流量の調節を行うバルブ手段,を備えるとともに、前記蓋の重量を、前記液化ガスへの蓄熱体の浸漬による前記容器の内圧増加に対応する重量とすることによって、該容器内を必要圧力または設定圧力まで密閉することを特徴とする。主要な形態の一つは、前記蓋の内側に、該蓋と前記出入口の間からのガス漏れを防止する気密手段を設けたことを特徴とする。
In order to achieve the above object, the liquefied gas take-out device of the present invention includes a lid that is detachably provided at the inlet / outlet of the liquefied gas open container, and is fixed so as to pass through the lid. It is immersed in the liquefied gas in the container, and the other end side is provided on the outer surface of the liquefied gas extraction side tube that leads to the outside of the container, the liquefied gas immersion side of the tube. A heat accumulator for generating pressure inside the container to be immersed, provided on the outside of the container of the tube, and provided with valve means for opening and closing the flow path of the liquefied gas or adjusting the flow rate, and the weight of the lid by the weight corresponding to the increase in internal pressure of the container that by the immersion of the regenerator into the liquefied gas, characterized by sealing the inside of the container to the required pressure or set pressure. One of the main forms is characterized in that an airtight means for preventing gas leakage from between the lid and the entrance / exit is provided inside the lid.

他の発明の液化ガス取出装置は、液化ガスの開放型容器の出入口に着脱可能に設けられる蓋,該蓋を通過するように固定されており、一方の端部開口が前記容器内の液化ガス中に浸漬され、他方の端部側が前記容器外に通じる液化ガス取出用のチューブ,該チューブの液化ガス浸漬側の端部外面に設けられており、前記液化ガス中に浸漬される容器内圧力発生用の蓄熱体,前記チューブの容器外部側に設けられており、前記液化ガスの流路の開閉ないし流量の調節を行うバルブ手段,を備えるとともに、前記蓋が弾性を有するとともに、前記出入口に嵌合可能な形状とすることによって、前記蓋は、前記液化ガスへの蓄熱体の浸漬によって容器内圧が変化したときに、前記容器内を必要圧力または設定圧力内に維持可能であることを特徴とする。
A liquefied gas take-out device according to another invention is provided with a lid detachably provided at an inlet / outlet of an open liquefied gas container, and is fixed so as to pass through the lid, and one end opening is a liquefied gas in the container. A tube for extracting a liquefied gas that is immersed in the other end side of the tube, and the pressure inside the vessel that is provided on the outer surface of the end portion on the liquefied gas immersion side of the tube and is immersed in the liquefied gas. A heat accumulator for generation, provided on the container outside of the tube, and provided with valve means for opening and closing the flow path of the liquefied gas or adjusting the flow rate, and the lid has elasticity, and is provided at the entrance / exit By adopting a fitting shape, the lid can maintain the inside of the container at a required pressure or a set pressure when the container internal pressure changes due to immersion of the heat storage body in the liquefied gas. Toss .

本発明の液化ガス取出方法は、請求項1〜のいずれかに記載の液化ガス取出装置を利用した液化ガス取出方法であって、前記蓋を液化ガス容器に取り付けることによって、液化ガスの蒸発に必要な温度の蓄熱体を液化ガス中に浸漬し、発生した蒸発ガスの圧力によって、前記容器内から前記チューブ及びバルブ手段を介して液化ガスを外部に取り出すことを特徴とする。本発明の前記及び他の目的,特徴,利点は、以下の詳細な説明及び添付図面から明瞭になろう。
The liquefied gas take-out method of the present invention is a liquefied gas take-out method using the liquefied gas take-out device according to any one of claims 1 to 3 , wherein the liquefied gas is evaporated by attaching the lid to the liquefied gas container. A heat storage body having a temperature required for the above is immersed in liquefied gas, and the liquefied gas is taken out from the container through the tube and valve means by the pressure of the generated evaporating gas. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

本発明は、開放型液化ガスの容器の出入口を、該容器内が必要圧力ないし設定圧力以上にならないように維持可能な重量の,あるいは、弾性を有し前記出入口に嵌合可能な形状の蓋で覆い、該蓋を通過するチューブの一端側に設けられた蓄熱体を前記容器内の液化ガスに浸漬するとともに、これによって発生した蒸発ガスの圧力を利用して、前記チューブを介して液化ガスを取り出すこととした。このため、簡単な構成で、少量の液化ガスを容易に取り出すことができるという効果がある。
According to the present invention, the inlet / outlet of the open-type liquefied gas container has a weight that can be maintained so that the inside of the container does not exceed a necessary pressure or a set pressure , or a shape that has elasticity and can be fitted into the inlet / outlet. Covering with a lid , immersing the heat storage body provided on one end side of the tube passing through the lid in the liquefied gas in the container, and using the pressure of the evaporating gas generated thereby, liquefy via the tube The gas was taken out. For this reason, there is an effect that a small amount of liquefied gas can be easily taken out with a simple configuration.

以下、本発明を実施するための最良の形態を、実施例に基づいて詳細に説明する。   Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

最初に、図1〜図3を参照しながら、本発明の実施例1を説明する。図1は、本実施例の液化ガス取出装置の構造を示す断面図,図2は、本実施例による液化ガスの取出の様子を示す図,図3は、本実施例の主要部を示す分解斜視図である。本発明は、例えば、液体窒素のような液化ガスを、容器から少量取り出すためのものである。   First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing the structure of the liquefied gas take-out device of the present embodiment, FIG. 2 is a view showing the state of taking out the liquefied gas according to the present embodiment, and FIG. It is a perspective view. The present invention is for removing a small amount of liquefied gas such as liquid nitrogen from a container.

図1に示すように、本実施例の液化ガス取出装置10は、液化ガス容器50の筒状の出入口(ないし注ぎ口)54の上端開口部に着脱可能に取り付けられるものであり、図2に示すように、通常の保管時の蓋60と交換可能となっている。液化ガス取出装置10は、略円筒状(断面略コ字状)の蓋12,その内側に設けられたパッキン20,前記蓋12及びパッキン20を通過する液化ガスの取出用チューブ26,該取出用チューブ26の一方の端部32A外面に設けられた蓄熱材40,前記取出用チューブ26の他方の端部28B側に設けられたバルブ42により構成されている。   As shown in FIG. 1, the liquefied gas take-out device 10 of the present embodiment is detachably attached to the upper end opening of a cylindrical inlet / outlet (or spout) 54 of the liquefied gas container 50. FIG. As shown, it can be replaced with a lid 60 during normal storage. The liquefied gas take-out device 10 includes a substantially cylindrical (substantially U-shaped) lid 12, a packing 20 provided on the inside thereof, a liquefied gas take-out tube 26 that passes through the lid 12 and the packing 20, and the liquefied gas take-out device 10. The heat storage material 40 is provided on the outer surface of one end 32 </ b> A of the tube 26, and the valve 42 is provided on the other end 28 </ b> B side of the extraction tube 26.

一方、前記液化ガス容器50は、図2に示すように、液化ガス56が収容(ないし貯留)される本体52が、真空断熱構造となっている。また、前記本体52の上部は、前記液化ガス56が蒸発したガスが充満する蒸発ガス部58となっている。このような本体52には、液化ガスの筒状の出入口54が連続して形成されており、該出入口54から、液化ガスの注入や取り出しが行われる。なお、前記出入口54の上端開口部は、通常は、図2(A)に示す保管時用の蓋60によって覆われている。   On the other hand, in the liquefied gas container 50, as shown in FIG. 2, the main body 52 in which the liquefied gas 56 is accommodated (or stored) has a vacuum heat insulating structure. Further, the upper portion of the main body 52 is an evaporating gas portion 58 that is filled with a gas obtained by evaporating the liquefied gas 56. In such a main body 52, a cylindrical inlet / outlet port 54 for liquefied gas is continuously formed, and liquefied gas is injected and extracted from the inlet / outlet port 54. The upper end opening of the entrance / exit 54 is usually covered with a storage lid 60 shown in FIG.

次に、図1及び図3を参照して前記液化ガス取出装置10について説明する。まず、前記蓋12は、平面部12A,中間部12B,筒部12Cからなり、これらに設けられたネジ穴14A,14B,14Cにネジ15を螺合させることによって組立可能となっている。前記平面部12Aは略円盤状となっている。中間部12Bは、底面16を有する略円筒状であって、該底面16には、後述する固定部材24を通すための挿通孔18が設けられ、側面には、後述するチューブ28を外部に引き出すための切欠部19が設けられている。また、前記筒部12Cは略円筒状であって、その内径が、前記出入口54の外径よりも若干大きくなるように設定されている。このような蓋12は、例えば、金属などにより形成されている。   Next, the liquefied gas extraction device 10 will be described with reference to FIGS. 1 and 3. First, the lid 12 includes a flat portion 12A, an intermediate portion 12B, and a cylindrical portion 12C, and can be assembled by screwing screws 15 into screw holes 14A, 14B, and 14C provided therein. The flat surface portion 12A has a substantially disk shape. The intermediate portion 12B has a substantially cylindrical shape having a bottom surface 16. The bottom surface 16 is provided with an insertion hole 18 through which a fixing member 24 to be described later passes, and a tube 28 to be described later is pulled out to the side surface. A notch 19 is provided for this purpose. The cylindrical portion 12C has a substantially cylindrical shape, and the inner diameter thereof is set to be slightly larger than the outer diameter of the entrance / exit 54. Such a lid 12 is made of, for example, metal.

該蓋12は、液化ガス容器50の内圧が上がったときに、所定の必要圧力または設定圧力に達するまでは前記出入口54から外れることがないように、ある程度の重量が必要となる。このため、本実施例では、蓋12を金属で構成し、前記平面部12Aを適宜厚さに設定したり、筒部12Cを長く設定したりして重量を調整することによって、容器内圧が増加した場合でも、出入口54から外れることなく、液化ガス容器50を必要圧力または設定圧力以内に維持することができるようになっている。   The lid 12 needs a certain amount of weight so that it does not come off from the inlet / outlet port 54 until the predetermined required pressure or set pressure is reached when the internal pressure of the liquefied gas container 50 increases. For this reason, in this embodiment, the lid 12 is made of metal, and the inner pressure of the container is increased by adjusting the weight by appropriately setting the thickness of the flat surface portion 12A or setting the cylindrical portion 12C longer. Even in this case, the liquefied gas container 50 can be maintained within the required pressure or the set pressure without coming off from the entrance / exit 54.

ここで、蓋12の重量について説明する。蓋12と液化ガス容器50の圧力との接する面積は、出入口54の半径をrとすると、πrで表わされる。そして、設定圧力(または必要圧力)をP,蓋12の重量をGとすると、これらの間には、P=G/πrの関係が成り立つ。すなわち、設定圧力Pが決まれば、蓋12の重量Gが決定される。一例を挙げると、出入口54の内径(2r)が1.9cmで、設定圧力として0.1MPa(≒1kg/cm)必要である場合は、r=0.95cmであるから、上述した式から、G=2.83kgとなる。圧力が0.2MPa(≒2kg/cm)の場合は、G=5.66kgというように、蓋12に必要な重量が設定される。 Here, the weight of the lid 12 will be described. The area where the lid 12 is in contact with the pressure of the liquefied gas container 50 is represented by πr 2 where r is the radius of the inlet / outlet 54. When the set pressure (or required pressure) is P and the weight of the lid 12 is G, a relationship of P = G / πr 2 is established between them. That is, when the set pressure P is determined, the weight G of the lid 12 is determined. As an example, when the inner diameter (2r) of the inlet / outlet 54 is 1.9 cm and the required pressure is 0.1 MPa (≈1 kg / cm 2 ), r = 0.95 cm. G = 2.83 kg. When the pressure is 0.2 MPa (≈2 kg / cm 2 ), the weight necessary for the lid 12 is set such that G = 5.66 kg.

このような蓋12の内側には、前記出入口54の開口部の外周面と前記筒部12Cの内面との間に入り込むような形状のパッキン20が設けられており、蓋12と出入口54の隙間から、設定圧力(ないし必要圧力)以下のときにガスが漏れるのを防止している。また、パッキン20の上面22には、後述する固定部材24を通すための挿通孔23が形成されている。このようなパッキン20は、例えば、ゴムなどの弾性体により形成されている。   Inside the lid 12, a packing 20 is provided so as to enter between the outer peripheral surface of the opening of the entrance / exit 54 and the inner surface of the cylindrical portion 12 </ b> C, and a gap between the lid 12 and the entrance / exit 54 is provided. Therefore, the gas is prevented from leaking when it is lower than the set pressure (or required pressure). Further, an insertion hole 23 is formed on the upper surface 22 of the packing 20 for allowing a fixing member 24 described later to pass therethrough. Such a packing 20 is formed of an elastic body such as rubber, for example.

前記液化ガスの取出用チューブ26は、3つのチューブ28,30,32を接続して構成されており、全体が略L字状となっている。チューブ28は、前記蓋12の中間部12Bの挿通孔18及び切欠部19を通過可能な略L字状に形成されており、一方の端部28Aは、外周面に形成されたネジ部とナット34によって前記固定部材24と連結され、他方の端部28Bは、前記蓋12の側面から外部に引き出すことができる長さに設定されている。また、前記端部28B側には、チューブ28を通って上昇してきた液化ガスの流路の開閉や流量を調節するためのバルブ42が設けられている。   The liquefied gas extraction tube 26 is formed by connecting three tubes 28, 30, and 32, and has a substantially L-shape as a whole. The tube 28 is formed in a substantially L shape that can pass through the insertion hole 18 and the cutout portion 19 of the intermediate portion 12B of the lid 12, and one end portion 28A has a screw portion and a nut formed on the outer peripheral surface. The other end 28 </ b> B is connected to the fixing member 24 by 34, and is set to a length that can be pulled out from the side surface of the lid 12. On the end 28B side, a valve 42 is provided for opening and closing the flow path of the liquefied gas rising through the tube 28 and adjusting the flow rate.

チューブ30は、一方の端部30Aが、外周面に形成されたネジ部とナット38によって他のチューブ32と連結され、他方の端部30Bが、外周面に形成されたネジ部とナット36によって前記固定部材24と連結される。また、チューブ32は、一方の端部32Aが、液化ガス容器50内の液化ガス56中に浸漬し、他方の端部32Bは、外周面に形成されたネジ部とナット38によって、前記チューブ30と連結可能となっている。   The tube 30 has one end portion 30A connected to the other tube 32 by a screw portion and a nut 38 formed on the outer peripheral surface, and the other end portion 30B by a screw portion and a nut 36 formed on the outer peripheral surface. The fixing member 24 is connected. The tube 32 has one end portion 32A immersed in the liquefied gas 56 in the liquefied gas container 50, and the other end portion 32B is formed by the screw portion and the nut 38 formed on the outer peripheral surface. Can be connected to.

更に、前記チューブ32の端部32Aの外周面には、容器内の液化ガス56に浸漬可能な位置に、蓄熱材40が設けられている。該蓄熱材40は、液化ガス取出装置10が液化ガス容器50から取り外されているときは、室温に放置されており、蓋12を取り付けて液化ガス56中に浸漬されると、液化ガス56と熱交換を行って、液化ガス56を蒸発させるものである。   Further, a heat storage material 40 is provided on the outer peripheral surface of the end portion 32 </ b> A of the tube 32 at a position where the tube 32 can be immersed in the liquefied gas 56. The heat storage material 40 is left at room temperature when the liquefied gas take-out device 10 is removed from the liquefied gas container 50, and when the lid 12 is attached and immersed in the liquefied gas 56, Heat exchange is performed to evaporate the liquefied gas 56.

以上のような蓋12の組立手順を示すと、まず、平面部12Aの底面16とパッキン20の上面22を、これらに設けられた挿通孔18及び23の位置が合うように重ね、パッキン20の内側から、固定部材24を前記挿通孔18及び23に通す。該固定部材24は、中空の略筒状であって、両端の外周面にネジ部24A及び24Bが形成されるとともに、一方のネジ部24Bに近接して、径方向に突出したフランジ部24Cが設けられている。中間部12Bの挿通孔18から露出したネジ部24Aと、前記チューブ28の端部28Aを合わせてナット34を締めると、固定部材24がチューブ28側に引き寄せられ、フランジ部24Cがパッキン20の上面22に接触し、蓋12の中間部12B,パッキン20,チューブ28が固定される。   The procedure for assembling the lid 12 as described above is as follows. First, the bottom surface 16 of the flat surface portion 12A and the upper surface 22 of the packing 20 are overlapped so that the positions of the insertion holes 18 and 23 provided in these are aligned. The fixing member 24 is passed through the insertion holes 18 and 23 from the inside. The fixing member 24 has a hollow and substantially cylindrical shape, and screw portions 24A and 24B are formed on the outer peripheral surfaces of both ends, and a flange portion 24C protruding in the radial direction is adjacent to one screw portion 24B. Is provided. When the screw portion 24 </ b> A exposed from the insertion hole 18 of the intermediate portion 12 </ b> B and the end portion 28 </ b> A of the tube 28 are aligned and the nut 34 is tightened, the fixing member 24 is pulled toward the tube 28, and the flange portion 24 </ b> C is the upper surface of the packing 20. 22, the intermediate portion 12 </ b> B of the lid 12, the packing 20, and the tube 28 are fixed.

次に、前記固定部材24の他方のネジ部24Bと、チューブ30の一方の端部30Bを合わせてナット36を螺合することで、前記固定部材24とチューブ30を接続する。そして、前記中間部12Bを挟むように平面部12Aと筒部12Cを合わせ、これらのネジ穴14A〜14Cにネジ15を螺合させる。最後に、前記チューブ30の他方の端部30Aと、チューブ32の一方の端部32Bを合わせて、これらの外周面のネジ部とナット38を螺合することにより、取出用チューブ26が固定された蓋12の組み立てが完了する。   Next, the other screw part 24B of the fixing member 24 and one end part 30B of the tube 30 are aligned and the nut 36 is screwed together, thereby connecting the fixing member 24 and the tube 30. Then, the planar portion 12A and the cylindrical portion 12C are aligned so as to sandwich the intermediate portion 12B, and the screw 15 is screwed into these screw holes 14A to 14C. Finally, the other end 30A of the tube 30 and the one end 32B of the tube 32 are aligned, and the threaded portion of these outer peripheral surfaces and the nut 38 are screwed together, whereby the take-out tube 26 is fixed. The assembly of the lid 12 is completed.

なお、チューブ32は、液化ガス容器50の大きさに応じて、図2に示す他のチューブ62と交換することにより、長さ調節が可能となっている。該チューブ62は、チューブ本体の長さが異なるほかは、前記チューブ32と基本的に同様の構成となっている。すなわち、一方の端部62Aの外周面に蓄熱材40が設けられ、他方の端部62Bの外周面にはネジ部が設けられている。このように、先端のチューブ32を交換可能とすることにより、液化ガス容器50の大きさや深さに応じて、蓄熱材40を確実に液化ガス56中に浸漬させることが可能となっている。   The length of the tube 32 can be adjusted by exchanging it with another tube 62 shown in FIG. 2 according to the size of the liquefied gas container 50. The tube 62 has basically the same configuration as the tube 32 except that the length of the tube body is different. That is, the heat storage material 40 is provided on the outer peripheral surface of the one end portion 62A, and the screw portion is provided on the outer peripheral surface of the other end portion 62B. Thus, by making the tube 32 at the front end replaceable, the heat storage material 40 can be surely immersed in the liquefied gas 56 in accordance with the size and depth of the liquefied gas container 50.

以上のようにして組み立てられた蓋12は、チューブ28の外部引き出し側に設けられたバルブ42を閉じたときに、前記蓄熱材40の放熱による内部圧力増加によって、出入口54との隙間から設定圧力以下ではガス漏れすることがないように液化ガス容器50を密閉可能となっている。いいかれば、前記液化ガス容器50内の圧力が、設定圧力または必要圧力に達したときに、その圧力によって蓋12が出入口54から押し上げられて、圧力が外部に放出される。すなわち、液化ガス容器50内部の圧力が、設定圧力ないし必要圧力以内に維持可能となっている。   The lid 12 assembled as described above has a set pressure from the gap with the inlet / outlet 54 due to an increase in internal pressure due to heat dissipation of the heat storage material 40 when the valve 42 provided on the outside drawing side of the tube 28 is closed. In the following, the liquefied gas container 50 can be sealed so as not to leak gas. In other words, when the pressure in the liquefied gas container 50 reaches a set pressure or a necessary pressure, the lid 12 is pushed up from the entrance / exit 54 by the pressure, and the pressure is released to the outside. That is, the pressure inside the liquefied gas container 50 can be maintained within a set pressure or a required pressure.

次に、図2も参照して、本実施例の作用を説明する。なお、液化ガス取出装置10は、上述した手順に従って、あらかじめ組み立てておくものとする。まず、図2(A)に示すように、液化ガスの通常の保管中は、液化ガス容器50の出入口54の上端開口部は、通常の蓋60で覆われている。液化ガスを取り出すときは、図2(B)に示すように、通常の蓋60を取り外し、代わりに室温に放置しておいた液化ガス取出装置10を取り付けて、室温状態の蓄熱材40を、容器内の液化ガス56中に浸漬する。なお、この時点で、バルブ42は閉じておく。液化ガスは、極低温であって(例えば、液化窒素の温度が約−196℃)、室温状態の蓄熱材40を投入することにより蒸発する。発生した蒸発ガスは、蓋12及びパッキン20により出入口54が塞がれているため、蒸発ガス部58に充満し、蒸発ガス量が増えるにつれて、液化ガス容器50の内圧が上昇する。この状態で前記バルブ42を開くと、液化ガス56は、チューブ26内を上昇し、端部28B側から外部に取り出される。   Next, the operation of this embodiment will be described with reference to FIG. In addition, the liquefied gas extraction apparatus 10 shall be assembled beforehand according to the procedure mentioned above. First, as shown in FIG. 2A, during normal storage of liquefied gas, the upper end opening of the inlet / outlet 54 of the liquefied gas container 50 is covered with a normal lid 60. When the liquefied gas is taken out, as shown in FIG. 2 (B), the ordinary lid 60 is removed, and instead the liquefied gas take-out device 10 left at room temperature is attached, and the heat storage material 40 in the room temperature state is attached. Immerse in the liquefied gas 56 in the container. At this time, the valve 42 is closed. The liquefied gas has a very low temperature (for example, the temperature of liquefied nitrogen is about -196 ° C.), and evaporates when the heat storage material 40 in a room temperature state is charged. The generated evaporative gas fills the evaporative gas part 58 because the inlet / outlet 54 is closed by the lid 12 and the packing 20, and the internal pressure of the liquefied gas container 50 increases as the amount of evaporative gas increases. When the valve 42 is opened in this state, the liquefied gas 56 rises in the tube 26 and is taken out from the end portion 28B side.

なお、液化ガス容器50内の液化ガス56の残量が少なく、チューブ32では蓄熱材40が浸漬しないような場合には、他の長いチューブ62などと交換して液化ガス56の取り出しを行う。また、取出量は、蓄熱材40の熱容量,大きさ,温度,浸漬時間などにより異なるが、通常は少量の液化ガス56が取り出される。液化ガス取出後は、通常の蓋60と交換する。なお、前記蓄熱材40の浸漬によって、液化ガス容器50内の圧力が、設定圧力または必要圧力に達すると、前記蓋12が出入口54から浮き上がって、圧力が外部へ放出される。   When the amount of the liquefied gas 56 in the liquefied gas container 50 is small and the heat storage material 40 is not immersed in the tube 32, the liquefied gas 56 is taken out by replacing with the other long tube 62 or the like. Further, the amount of extraction varies depending on the heat capacity, size, temperature, immersion time, etc. of the heat storage material 40, but usually a small amount of liquefied gas 56 is extracted. After the liquefied gas is taken out, the normal lid 60 is replaced. When the pressure in the liquefied gas container 50 reaches a set pressure or a required pressure due to the immersion of the heat storage material 40, the lid 12 is lifted from the entrance / exit 54, and the pressure is released to the outside.

このように、実施例1によれば、液化ガス容器50の出入口54を、該液化ガス容器50内が設定圧力以上にならないように維持可能な重量の蓋12で密閉し、該蓋12を通過するチューブ26の一端側に設けられた蓄熱材40を前記容器内の液化ガス56に浸漬する。そして、前記蓄熱材40の浸漬により発生した蒸発ガスの圧力を利用して、前記チューブ26から液化ガスを取り出すこととしたので、簡単な構成で少量の液化ガス56を容易に取り出すことができる。また、チューブ26の下端側を交換可能としたので、液化ガス容器50内の大きさや、液化ガス56の残量に応じて適宜対応可能である。   Thus, according to the first embodiment, the inlet / outlet 54 of the liquefied gas container 50 is sealed with the lid 12 having a weight that can be maintained so that the inside of the liquefied gas container 50 does not exceed the set pressure, and passes through the lid 12. The heat storage material 40 provided on one end side of the tube 26 to be performed is immersed in the liquefied gas 56 in the container. Since the liquefied gas is extracted from the tube 26 using the pressure of the evaporating gas generated by the immersion of the heat storage material 40, a small amount of the liquefied gas 56 can be easily extracted with a simple configuration. Further, since the lower end side of the tube 26 can be exchanged, it can be appropriately handled according to the size in the liquefied gas container 50 and the remaining amount of the liquefied gas 56.

次に、図4(A)を参照しながら、本発明の実施例2を説明する。なお、上述した実施例1と同一ないし対応する構成要素には同一の符号を用いることとする(以下の実施例についても同様)。前記実施例1では、蓋12の内側に設けるパッキンを、液化ガス容器50の出入口54の外側に嵌め込むこととしたが、本実施例の液化ガス取出装置70のように、蓋12の内側に設けるパッキン72を、前記出入口54の内側に嵌め込む構造としてもよい。本実施例の作用・効果は、前記実施例1と同様である。   Next, Embodiment 2 of the present invention will be described with reference to FIG. In addition, the same code | symbol shall be used for the component which is the same as that of Example 1 mentioned above, or respond | corresponds. In the first embodiment, the packing provided inside the lid 12 is fitted to the outside of the entrance / exit 54 of the liquefied gas container 50. However, like the liquefied gas take-out device 70 of this embodiment, the packing is provided inside the lid 12. The packing 72 to be provided may be configured to be fitted inside the entrance / exit 54. The operations and effects of the present embodiment are the same as those of the first embodiment.

次に、図4(B)を参照しながら、本発明の実施例3を説明する。本実施例の液化ガス取出装置80のパッキン82は、出入口54の差込方向に溝84が形成されており、該溝84に出入口54を差し込むことによって、必要圧力または設定圧力以内での気密性が保たれている。本実施例の作用・効果は、上述した実施例1と同様である。また、本実施例において、蓋12を用いずに、ゴムやコルクなどの弾性体で形成されたパッキン82のみで、液化ガス容器50の内圧を所定の圧力以下に保つようにしてもよい。この場合、チューブ28は、直接パッキン82から外部に引き出される。更に、蓋12をパッキン82に対して着脱可能として、必要に応じた重量の蓋12を装着するようにしてもよい。   Next, Embodiment 3 of the present invention will be described with reference to FIG. In the packing 82 of the liquefied gas extraction device 80 of this embodiment, a groove 84 is formed in the insertion direction of the inlet / outlet 54. By inserting the inlet / outlet 54 into the groove 84, airtightness within a required pressure or a set pressure is achieved. Is maintained. The operations and effects of the present embodiment are the same as those of the first embodiment described above. Further, in this embodiment, the internal pressure of the liquefied gas container 50 may be kept below a predetermined pressure by using only the packing 82 formed of an elastic body such as rubber or cork without using the lid 12. In this case, the tube 28 is directly pulled out from the packing 82. Furthermore, the lid 12 may be detachable from the packing 82, and the lid 12 having a weight as required may be attached.

なお、本発明は、上述した実施例に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることができる。例えば、以下のものも含まれる。
(1)前記実施例で示した形状,大きさ,材質は一例であり、必要に応じて適宜変更してよい。例えば、前記実施例3では、パッキン82の材質として、ゴムやコルクを例に挙げたが、これも一例であり、他の公知の各種の弾性体を利用してよい。また、前記実施例1〜3は、いずれも、チューブ26が蓋を側面から底面にかけて通過する構成としたが、例えば、蓋を上下に貫通する構成としてもよい。
(2)前記実施例1で示した蓋12やチューブ26も一例であり、同様の効果を奏するように適宜設計変更してよい。
(3)前記実施例1で示した蓄熱材40も一例であり、図4(C-1)に示すように、蓄熱材44の厚みを増して液化ガス56の取出量を多くするようにしてもよい。また、図4(C-2)に示すように、複数の略リング状の蓄熱材48を用意し、チューブ32の先端と螺合するネジ部46Aを備えた蓄熱材46によって、前記複数の蓄熱材48を支持するようにしてもよい。このような構成とすると、前記蓄熱材48の装着数により、液化ガス56の取出量を調節することができる。もちろん、図4(C-1)及び(C-2)に示した蓄熱材44,46,48も一例であり、液化ガス容器50の出入口54を通過可能なものであれば、形状,大きさ,チューブとの取付機構は適宜変更してよい。
(4)前記実施例では、蓋12の重量と、内側のパッキンを利用して、所定の圧力まで液化ガス取出容器50の密閉を図ることとしたが、蓋の重量は、蓄熱材40により増加する内圧に応じて適宜変更してよい。また、蓋の重量のみによって密閉を図るようにしてもよいし、蓋自体を弾性体で構成して、密閉を図るようにしてもよい。
(5)前記作用も一例であり、蓄熱材40は、室温で放置しておくのみならず、浸漬前に適宜手段(湯,熱湯など)によって必要な温度まで加熱しておくようにしてもよい。また、蓋12の組立手順も一例であり、必要に応じて適宜変更可能である。
(6)本発明は、液化窒素や液化アルゴンなど、公知の各種の液化ガスに対して適用可能である。
In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) The shape, size, and material shown in the above embodiment are examples, and may be appropriately changed as necessary. For example, in the third embodiment, rubber or cork is taken as an example of the material of the packing 82, but this is also an example, and various other known elastic bodies may be used. In each of the first to third embodiments, the tube 26 passes through the lid from the side surface to the bottom surface. For example, the tube 26 may be configured to penetrate the lid up and down.
(2) The lid 12 and the tube 26 shown in the first embodiment are examples, and the design may be changed as appropriate so as to achieve the same effect.
(3) The heat storage material 40 shown in the first embodiment is also an example, and as shown in FIG. 4 (C-1), the thickness of the heat storage material 44 is increased to increase the amount of liquefied gas 56 taken out. Also good. Further, as shown in FIG. 4C-2, a plurality of substantially ring-shaped heat storage materials 48 are prepared, and the plurality of heat storage materials 46 are provided with a heat storage material 46 provided with a screw portion 46A that is screwed to the tip of the tube 32. The material 48 may be supported. With such a configuration, the extraction amount of the liquefied gas 56 can be adjusted by the number of the heat storage materials 48 attached. Of course, the heat storage materials 44, 46, and 48 shown in FIGS. 4C-1 and 4C-2 are also examples, and any shape and size can be used as long as they can pass through the inlet / outlet 54 of the liquefied gas container 50. The attachment mechanism with the tube may be changed as appropriate.
(4) In the above embodiment, the liquefied gas extraction container 50 is sealed to a predetermined pressure using the weight of the lid 12 and the inner packing, but the weight of the lid is increased by the heat storage material 40. You may change suitably according to the internal pressure to do. Further, the sealing may be achieved only by the weight of the lid, or the lid itself may be formed of an elastic body so as to achieve the sealing.
(5) The above action is also an example, and the heat storage material 40 may not only be left at room temperature, but may be heated to a necessary temperature by appropriate means (hot water, hot water, etc.) before immersion. . Moreover, the assembly procedure of the lid 12 is also an example, and can be appropriately changed as necessary.
(6) The present invention can be applied to various known liquefied gases such as liquefied nitrogen and liquefied argon.

本発明によれば、開放型液化ガスの容器の出入口を、該容器内が設定圧力ないし必要圧力以上にならないように維持する重量の,あるいは、弾性を有し前記出入口に嵌合可能な形状の蓋で塞ぎ、該蓋を貫通するチューブの一端側に設けられた蓄熱体を前記容器内の液化ガスに浸漬するとともに、これによって発生した蒸発ガスの圧力を利用して、前記チューブを介して液化ガスを取り出すこととしたので、液化ガスの取出装置の用途に適用できる。特に、少量の液化ガスを取り出す場合に好適である。

According to the present invention, the lid of an open type liquefied gas container is maintained so that the inside of the container does not exceed a set pressure or a required pressure , or a shape that has elasticity and can be fitted into the inlet / outlet. The heat storage body provided on one end side of the tube penetrating the lid is immersed in the liquefied gas in the container, and the pressure of the evaporating gas generated thereby is used to pass through the tube. Since the liquefied gas is taken out, it can be applied to the use of the liquefied gas take-out device. It is particularly suitable when a small amount of liquefied gas is taken out.

本発明の実施例1の構造を示す断面図である。It is sectional drawing which shows the structure of Example 1 of this invention. 前記実施例1による液化ガス取り出しの様子を示す図である。It is a figure which shows the mode of the liquefied gas extraction by the said Example 1. FIG. 前記実施例1の主要部を示す分解斜視図である。It is a disassembled perspective view which shows the principal part of the said Example 1. FIG. 本発明の他の実施例を示す主要断面図であり、(A)は実施例2を示す図,(B)は実施例3を示す図,(C-1)及び(C-2)は実施例1の変形例を示す図である。It is principal sectional drawing which shows the other Example of this invention, (A) is a figure which shows Example 2, (B) is a figure which shows Example 3, (C-1) and (C-2) are implementation. FIG. 10 is a diagram showing a modification of Example 1.

符号の説明Explanation of symbols

10:液化ガス取出装置
12:蓋
12A:平面部
12B:中間部
12C:筒部
14A〜14C:ネジ穴
15:ネジ
16:底面
18,23:挿通孔
19:切欠部
20:パッキン
22:上面
24:固定部材
24A,24B:ネジ部
24C:フランジ部
26:取出用チューブ
28,30,32:チューブ
28A,28B,30A,30B,32A,32B:端部
34,36,38:ナット
40,44,46,48:蓄熱材
42:バルブ
46A:ネジ部
50:液化ガス容器
52:本体
54:出入口(ないし注ぎ口)
56:液化ガス
58:蒸発ガス部
60:蓋
70:液化ガス取出装置
72:パッキン
80:液化ガス取出装置
82:パッキン
84:溝

10: Liquefied gas extraction device 12: Lid 12A: Plane portion 12B: Intermediate portion 12C: Tube portions 14A to 14C: Screw hole 15: Screw 16: Bottom surface 18, 23: Insertion hole 19: Notch portion 20: Packing 22: Upper surface 24 : Fixing members 24A, 24B: Screw portion 24C: Flange portion 26: Extraction tubes 28, 30, 32: Tubes 28A, 28B, 30A, 30B, 32A, 32B: End portions 34, 36, 38: Nuts 40, 44, 46, 48: Thermal storage material 42: Valve 46A: Screw part 50: Liquefied gas container 52: Main body 54: Entrance / exit (or spout)
56: Liquefied gas 58: Evaporative gas part 60: Lid 70: Liquefied gas take-out device 72: Packing 80: Liquefied gas take-out device 82: Packing 84: Groove

Claims (4)

液化ガスの開放型容器の出入口に着脱可能に設けられる蓋,
該蓋を通過するように固定されており、一方の端部開口が前記容器内の液化ガス中に浸漬され、他方の端部側が前記容器外に通じる液化ガス取出用のチューブ,
該チューブの液化ガス浸漬側の端部外面に設けられており、前記液化ガス中に浸漬される容器内圧力発生用の蓄熱体,
前記チューブの容器外部側に設けられており、前記液化ガスの流路の開閉ないし流量の調節を行うバルブ手段,
を備えるとともに、
前記蓋の重量を、前記液化ガスへの蓄熱体の浸漬による前記容器の内圧増加に対応する重量とすることによって、該容器内を必要圧力または設定圧力まで密閉することを特徴とする液化ガス取出装置。
A lid detachably provided at the entrance / exit of the open container for the liquefied gas,
A tube for extracting a liquefied gas, which is fixed so as to pass through the lid, one end opening is immersed in the liquefied gas in the container, and the other end side communicates with the outside of the container;
A heat accumulator for generating pressure in the container provided on the outer surface of the end of the tube on the liquefied gas immersion side and immersed in the liquefied gas;
Valve means provided on the container outer side of the tube, for opening and closing the flow path of the liquefied gas or adjusting the flow rate;
With
The weight of the lid, by a weight corresponding to the increase in internal pressure of the container that by the immersion of the regenerator into the liquefied gas, characterized by sealing the inside of the container to the required pressure or set pressure liquefied Gas extraction device.
前記蓋の内側に、該蓋と前記出入口の間からのガス漏れを防止する気密手段を設けたことを特徴とする請求項1記載の液化ガス取出装置。 Inside of the lid, according to claim 1 Symbol placement of the liquefied gas take-out apparatus characterized by providing a gas-tight means for preventing gas leakage from between the entrance opening and lid. 液化ガスの開放型容器の出入口に着脱可能に設けられる蓋,
該蓋を通過するように固定されており、一方の端部開口が前記容器内の液化ガス中に浸
漬され、他方の端部側が前記容器外に通じる液化ガス取出用のチューブ,
該チューブの液化ガス浸漬側の端部外面に設けられており、前記液化ガス中に浸漬され
る容器内圧力発生用の蓄熱体,
前記チューブの容器外部側に設けられており、前記液化ガスの流路の開閉ないし流量の
調節を行うバルブ手段,
を備えるとともに、
前記蓋が弾性を有するとともに、前記出入口に嵌合可能な形状とすることによって、前記蓋は、前記液化ガスへの蓄熱体の浸漬によって容器内圧が変化したときに、前記容器内を必要圧力または設定圧力内に維持可能であることを特徴とする液化ガス取出装置。
A lid detachably provided at the entrance / exit of the open container for the liquefied gas,
It is fixed so as to pass through the lid, and one end opening is immersed in the liquefied gas in the container.
A tube for taking out liquefied gas, which is immersed in, and the other end side leads to the outside of the container,
It is provided on the outer surface of the tube on the liquefied gas immersion side and immersed in the liquefied gas.
A heat storage for generating pressure inside the container,
It is provided outside the container of the tube, and opens and closes the flow path or flow rate of the liquefied gas.
Valve means for adjusting,
With
The lid has elasticity and has a shape that can be fitted into the inlet / outlet, so that the lid has a necessary pressure or pressure in the container when the container internal pressure changes due to immersion of the heat storage body in the liquefied gas. A liquefied gas take-out device characterized in that it can be maintained within a set pressure .
請求項1〜のいずれかに記載の液化ガス取出装置を利用した液化ガス取出方法であって、
前記蓋を開放型液化ガス容器に取り付けることによって、液化ガスの蒸発に必要な温度の蓄熱体を液化ガス中に浸漬し、発生した蒸発ガスの圧力によって、前記容器内から前記チューブ及びバルブ手段を介して液化ガスを外部に取り出すことを特徴とする液化ガス取出方法。
A liquefied gas extraction method using the liquefied gas extraction device according to any one of claims 1 to 3 ,
By attaching the lid to an open type liquefied gas container, a heat storage body having a temperature necessary for the evaporation of the liquefied gas is immersed in the liquefied gas, and the tube and valve means are connected from the container by the pressure of the generated evaporated gas. A liquefied gas extraction method, wherein the liquefied gas is extracted to the outside.
JP2005284765A 2005-09-29 2005-09-29 Liquefied gas extraction device and extraction method Expired - Fee Related JP4177367B2 (en)

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