JP2000266292A - Heat insulating storage tank device for transporting low temperature liquefied gas - Google Patents
Heat insulating storage tank device for transporting low temperature liquefied gasInfo
- Publication number
- JP2000266292A JP2000266292A JP11072744A JP7274499A JP2000266292A JP 2000266292 A JP2000266292 A JP 2000266292A JP 11072744 A JP11072744 A JP 11072744A JP 7274499 A JP7274499 A JP 7274499A JP 2000266292 A JP2000266292 A JP 2000266292A
- Authority
- JP
- Japan
- Prior art keywords
- storage tank
- liquefied gas
- temperature liquefied
- pressure
- low
- 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
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、低温液化ガスを輸
送してこれを使用先の貯蔵タンクに送液充填する、タン
クローリー車の如き貯蔵と送液機能を備えた低温液化ガ
ス輸送用断熱貯槽装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adiabatic storage tank for transporting a low-temperature liquefied gas having a storage and liquid-feeding function, such as a tank lorry, which transports a low-temperature liquefied gas and fills it into a storage tank where it is used. Related to the device.
【０００２】[0002]
【従来の技術】空気の組成分である酸素ガス、窒素ガ
ス、アルゴンガス等のガスは、これらの単一成分の高純
度ガスとして、鉄鋼、溶接、食品、半導体製造等々あら
ゆる産業分野で使用されている。そして、これらの単一
の成分は、空気を液化して前記空気成分の沸点の差異に
よって分離する、いわゆる空気液化分離装置によって分
離採取している。又、かかる装置で分離採取されたこれ
らの前記した単一成分のガスの使用に当っては、その使
用する量の規模に適応した使用形態が採用されている。2. Description of the Related Art Gases such as oxygen gas, nitrogen gas and argon gas, which are components of air, are used in various industrial fields such as steel, welding, food, and semiconductor manufacturing as high purity gas of these single components. ing. These single components are separated and collected by a so-called air liquefaction / separation device that liquefies air and separates the components based on the difference in boiling points of the air components. Further, when using the above-mentioned single-component gas separated and collected by such an apparatus, a use form adapted to the scale of the amount to be used is adopted.
【０００３】例えば、使用頻度が少ない場合には、ガス
を充填した容器、即ちガスボンベを使用場所に配して使
用している。又、他方使用頻度が高く大量に使用する場
合には、そのガス使用先の工場の近接場所に空気液化分
離装置を設置し、ガスの分離採取と共に消費先に供給し
て使用している。そして、これらの中間的規模の使用量
の場合には、使用先である工場に前記ガスを液体状態で
貯蔵する断熱貯槽タンクを設置して、この断熱貯槽タン
クに、前記した空気液化分離装置で液体状態で採集した
前記単一成分の低温液化ガスをタンクローリ−車等で輸
送して、充填貯蔵し、使用時にはこれを蒸発器により気
化して使用している。For example, when the frequency of use is low, a gas-filled container, that is, a gas cylinder is used at a place of use. On the other hand, when the gas is frequently used and used in large quantities, an air liquefaction / separation device is installed near the factory where the gas is used, and the gas is separated and collected and supplied to the consumer for use. And, in the case of the use amount of these intermediate scales, an adiabatic storage tank for storing the gas in a liquid state is installed in a factory where the use is made, and the adiabatic liquefaction and separation apparatus described above is used for the adiabatic storage tank. The single-component low-temperature liquefied gas collected in a liquid state is transported by a tank lorry or the like, filled and stored, and is used after being vaporized by an evaporator when used.
【０００４】そこで、上記した低温液化ガスの輸送運搬
にあたっては、空気液化分離装置を設備しているガス製
造工場の大型断熱貯槽に低温の液体状態で貯液してある
低温の液化ガスを、断熱が施された貯槽を搭載したタン
クローリ車の如き輸送用断熱貯槽装置に充填収容して、
前記使用先の工場迄運搬し、該使用先工場に設置してあ
る断熱貯槽タンクにこれを送液して移充填して、貯蔵す
る。しかるに、ガスの使用先の工場に設置してある断熱
貯槽タンクにおいては、低温液化ガスを使用作業現場に
送液する必要から貯槽内の圧力を一般に６〜１０ｋgｆ
／ｃｍ2（ゲージ圧力）にして使用しているのが実情で
ある。Therefore, when transporting the low-temperature liquefied gas, the low-temperature liquefied gas stored in a low-temperature liquid state in a large insulated storage tank of a gas manufacturing plant equipped with an air liquefaction separation device is insulated. Filled and stored in a heat-insulated storage tank device for transportation, such as a tank lorry equipped with a storage tank with
The product is transported to the factory where it is used, and is sent to an insulated storage tank installed in the factory where it is used, transferred, filled, and stored. However, in the heat-insulating storage tank installed in the factory where the gas is used, the pressure in the storage tank is generally set to 6 to 10 kgf because the low-temperature liquefied gas needs to be sent to the work site.
/ Cm 2 (gauge pressure).
【０００５】一方タンクローリー車に搭載された低温液
化ガス輸送用断熱貯槽装置では、製造工場での貯蔵用の
大型貯槽よりの移充填のし易さと、運搬時の安全性を考
慮して、貯槽内圧力を０〜２ｋgｆ／ｃｍ2（ゲージ圧
力）を保持するこことが好ましく、そしてこのようにし
て運搬されている。従って、タンクローリー車の低温液
化ガス輸送用断熱貯槽で運搬されてきた低温液化ガスを
使用先の工場の断熱貯槽タンクに送液して移充填するた
めには、前記低温液化ガス断熱貯槽内の圧力を０〜２ｋ
gｆ／ｃｍ2（ゲージ圧力）より、使用先の工場の貯槽内
の圧力６〜１０ｋgｆ／ｃｍ2（ゲージ圧力）より高い圧
力に昇圧して行っている。その昇圧圧力は液化ガスのス
ムースな流れを形成して移充填を容易にするため、通常
一般に１３〜１４ｋgｆ／ｃｍ2（ゲージ圧力）の圧力と
して行っている。On the other hand, an insulated storage tank device for transporting low-temperature liquefied gas mounted on a tank truck is designed to allow easy transfer and refilling from a large storage tank for storage at a manufacturing plant and to ensure safety during transportation. Preferably, the pressure is maintained between 0 and 2 kgf / cm 2 (gauge pressure) and is thus transported. Therefore, in order to transfer the low-temperature liquefied gas transported in the low-temperature liquefied gas transporting adiabatic storage tank of the tank lorry to the adiabatic storage tank of the factory in which the liquefied gas is used, and to transfer and fill the low-temperature liquefied gas, the pressure in the low-temperature liquefied gas adiabatic storage tank is required. 0 to 2k
The pressure is increased from gf / cm 2 (gauge pressure) to a pressure higher than 6 to 10 kgf / cm 2 (gauge pressure) in the storage tank of the factory where the device is used. In order to form a smooth flow of the liquefied gas and facilitate transfer and filling, the pressure is generally set to a pressure of 13 to 14 kgf / cm 2 (gauge pressure).
【０００６】しかるに、タンクローリー車に搭載する従
来の低温液化ガス輸送用断熱貯槽装置は図２に図示する
如き構造よりなっている。図２は従来のタンクローリー
車に搭載する低温液化ガス輸送用の断熱貯槽装置の一例
を説明する構成系統概略図であり、断熱貯槽装置２０は
外槽２と内槽３とを断熱層４を間に介在せしめて二重壁
構造としている断熱貯槽１と該貯槽の内槽３内と連通す
る各種の配管類よりなっている。なお、符号５は外槽２
の天頂部に設けられた安全板で、漏洩等で断熱層４部が
特定圧力に上昇した時、高圧にならないうちにいち早く
破裂して被害を可及的に小さくするようにし、複数個所
に設けることにより破裂力を分散せしめ得る。なお、前
記断熱層４の断熱手段としてはパーライト等の粉末断熱
材を充填すると共に真空排気してなる真空粉末断熱方
式、銀等の金属箔−薄紙を多重積層状にして配すると共
に真空排気してなる、いわゆるスーパーインシュレイシ
ョン方式、単なる真空断熱方式、更には単なる断熱材を
充填した断熱材断熱方式等々の断熱方式が適宜採用する
ことが出来る。However, a conventional adiabatic storage device for transporting low-temperature liquefied gas mounted on a tank truck has a structure as shown in FIG. FIG. 2 is a schematic diagram showing a configuration of an example of a heat insulating storage device for transporting low-temperature liquefied gas mounted on a conventional tank truck, in which a heat insulating storage device 20 includes an outer tank 2 and an inner tank 3 with an insulating layer 4 interposed therebetween. A heat insulating storage tank 1 having a double wall structure interposed therebetween and various pipes communicating with the inside of the inner tank 3 of the storage tank. Reference numeral 5 indicates the outer tub 2
The safety plate provided at the zenith part, when the heat insulation layer 4 rises to a specific pressure due to leakage etc., explodes as soon as possible before the high pressure is reached, so as to minimize the damage and provide it at multiple places Thereby, the bursting force can be dispersed. The heat insulating means of the heat insulating layer 4 is a vacuum powder heat insulating system in which a powder heat insulating material such as pearlite is filled and evacuated, and a metal foil-thin paper of silver or the like is arranged in a multi-layered form and evacuated. Insulation methods such as a so-called super insulation method, a simple vacuum heat insulation method, and a heat insulation material insulation method filled with a simple heat insulation material can be appropriately adopted.
【０００７】前記内槽３内に連通する配管として、低温
液化ガスＬの導入管６が、その一端を内槽３内の上部に
配した複数の細孔７ａが下方に向けて穿孔されてなるシ
ャワー状噴出管７に連結し、その他端を内槽３の壁と外
槽２の壁を気密に貫通して外部に延設されて弁８を介し
て導出入主管９に連結して、設けられている。又、内槽
３の底部には低温液化ガスＬを供給先に導出するための
導出管１０がその一端を底部に開口せしめ、他端を内槽
３の壁と外槽２の壁を気密に貫通して外部に延設されて
弁１１を介して導出入主管９に連結するようにして設け
られている。そして、導出入主管９には出入弁Ｖが設け
られている。As a pipe communicating with the inner tank 3, a low-temperature liquefied gas L inlet pipe 6 is formed by drilling downward a plurality of fine holes 7 a having one end arranged in an upper part of the inner tank 3. The other end is connected to the shower-like jet pipe 7, and the other end is provided to extend to the outside through the wall of the inner tub 3 and the wall of the outer tub 2 in an airtight manner and to be connected to the lead-in / out main pipe 9 via the valve 8. Have been. At the bottom of the inner tank 3, a discharge pipe 10 for discharging the low-temperature liquefied gas L to the supply destination has one end opened at the bottom, and the other end airtightly connects the wall of the inner tank 3 and the wall of the outer tank 2 to each other. It is provided so as to penetrate and extend to the outside and to be connected to the lead-in / out main pipe 9 via the valve 11. An outlet valve V is provided in the lead-in / out main pipe 9.
【０００８】更に、低温液化ガスＬを導出する際、内槽
３内を加圧するための加圧用の配管として、加圧用抽出
管１２がその一端を内槽３の底部に開口し、他端を内槽
３の壁と外槽２の壁を気密に貫通して外部に延設されて
弁１３を介して蒸発器１４の一端に連結し、そして蒸発
器１４の他端より弁１５を介して連結された加圧用気体
導入管１６がその端部を外槽２と内槽３の壁を気密に貫
通して内槽３内の上方に開口せしめて設けられている。
なお、前記加圧用気体導入管１６は、その途中で放出管
１７を分岐し、その端部は弁１８を介して、好ましくは
車体床下部に沿って延設されて大気に開放されている。Further, when deriving the low-temperature liquefied gas L, as a pressurizing pipe for pressurizing the inner tank 3, a pressurizing extraction pipe 12 has one end opened to the bottom of the inner tank 3 and the other end connected to the other end. It extends through the wall of the inner tank 3 and the wall of the outer tank 2 in an airtight manner, is connected to one end of the evaporator 14 through the valve 13, and is connected to the other end of the evaporator 14 through the valve 15. The connected pressurized gas introduction pipe 16 is provided such that its end is airtightly penetrated through the walls of the outer tank 2 and the inner tank 3 and is opened upward in the inner tank 3.
The pressurizing gas introduction pipe 16 branches off the discharge pipe 17 in the middle thereof, and its end is extended through a valve 18, preferably along the lower part of the vehicle body floor, and is open to the atmosphere.
【０００９】又、内槽３に充填貯液されている低温液化
ガスＬの液量を確認するため、内槽３の底部に一端が開
口し、他端が外槽３の壁を気密に貫通して延設せしめた
管１９の管端と、内槽３の頂部の気層空間部Ｓにその一
端が開口して、他端が外槽３の壁を気密に貫通して延設
せしめた管２１の管端とを例えば差圧式液面計の如き液
面計２２に連結している。そして、前記内槽３の気層空
間部Ｓに連通する管２１には槽内圧力を確認するための
圧力計２３が設置されている。又更に、内槽３内には、
所定量以上の低温液化ガスＬを充填しない様に、所定の
液面高さ位置に一端が開口し他端が内槽３及び外槽２の
壁を気密に貫通して外部に延設されて弁２４を介して大
気に開口するように配された過充填防止配管２５が設け
られている。In order to confirm the amount of the low-temperature liquefied gas L filled and stored in the inner tank 3, one end is opened at the bottom of the inner tank 3 and the other end is airtightly penetrated through the wall of the outer tank 3. One end is opened to the pipe end of the pipe 19 extended and the gas layer space S at the top of the inner tank 3, and the other end is airtightly extended through the wall of the outer tank 3. The pipe end of the pipe 21 is connected to a liquid level gauge 22 such as a differential pressure level gauge. A pressure gauge 23 for checking the pressure in the tank is installed in the pipe 21 communicating with the gas space S of the inner tank 3. Furthermore, in the inner tank 3,
One end is opened at a predetermined liquid level position and the other end is airtightly penetrated through the walls of the inner tank 3 and the outer tank 2 so as not to be filled with the low-temperature liquefied gas L of a predetermined amount or more. An overfilling prevention pipe 25 arranged to open to the atmosphere via a valve 24 is provided.
【００１０】以上のような構造よりなるタンクローリー
車に搭載された低温液化ガス輸送用の断熱貯槽装置２０
の断熱貯槽１に、低温液化ガスＬを該低温液化ガスＬの
製造工場の大型断熱貯槽から充填する時は、弁２４を開
にして内槽３内を過充填防止配管２５を介して大気と連
通せしめて、出入弁Ｖ及び弁８を開き、その他の弁は閉
とする。そして貯槽内圧力０.５〜１ｋgｆ／ｃｍ2（ゲ
ージ圧力）に保持されている製造工場の大型断熱貯槽よ
り、これに連結した導出入主管９に、ポンプにより約６
ｋgｆ／ｃｍ2（ゲージ圧力）に昇圧して低温液化ガスＬ
が導入され、そして出入弁Ｖ、弁８を経て導入管６より
内槽３内の上方に設けたシャワー状噴出管７に流入し、
複数の細孔７ａ、…、…より低温液化ガスＬがシャワー
状に内槽３内に供給され、内槽３を均一に冷却しながら
効率良く充填される。An insulated storage tank device 20 for transporting low-temperature liquefied gas mounted on a tank truck having the above structure.
When the low-temperature liquefied gas L is filled into the heat-insulated storage tank 1 from the large-sized heat-insulated storage tank in the manufacturing plant of the low-temperature liquefied gas L, the valve 24 is opened and the inside of the inner tank 3 is communicated with the atmosphere via the overfill prevention pipe 25. The communication is performed, and the access valve V and the valve 8 are opened, and the other valves are closed. Then, a large insulated storage tank of a manufacturing plant, which is maintained at a pressure in the storage tank of 0.5 to 1 kgf / cm 2 (gauge pressure), is connected to the lead-in / out main pipe 9 connected to the storage tank by a pump to a pressure of about 6 kg.
KGf / cm 2 (gauge pressure)
Is introduced and flows into the shower-like ejection pipe 7 provided above the inner tank 3 from the introduction pipe 6 through the inlet / outlet valve V and the valve 8.
The plurality of fine pores 7a,..., And the liquefied gas L at a lower temperature are supplied into the inner tank 3 in the form of a shower, and are efficiently filled while cooling the inner tank 3 uniformly.
【００１１】そして充填と共に内槽３内に低温液化ガス
Ｌが貯液されて行くが、安全性の面から内槽３内に低温
液化ガスＬが過充填されないように、例えば内槽３の容
積の９０％以上に容積に充填されると、それ以上に充填
される（過充填）低温液化ガスＬは過充填防止配管２５
の先端開口２５ａより該管２５に流入して弁２４を経て
断熱貯槽１外に放出されるようになっている。即ち、断
熱貯槽１の内槽３の上部には常に内槽３の容積の最低で
も１０％の気層空間部Ｓを形成維持する構造となってい
る。又、この内槽３に貯液されている低温液化ガスＬの
液量は、内槽３の底部に開口して連結されている管１９
と、内槽３の気層空間部Ｓに開口して連結した管２１と
の管端が連結されている、例えば差圧式の液面計２２に
より確認される。そして又、内槽３内の圧力は前記内槽
３の気層空間部Ｓに開口して連結した管２１に設けた圧
力計２３により確認するようになっている。充填の終了
時には、出入弁Ｖ、弁８、弁１８及び弁２４を閉じる。
なお、内槽３内の圧力が設定した所定圧力以上に達した
場合には、放出管１７に設けた安全弁２６が適宜作動し
て、内槽３内を常に所定圧力［最高圧力約１４ｋgｆ／
ｃｍ2（ゲージ圧力）]以内にに保つようにされている。
通常一般には内槽３内圧力は０〜２ｋgｆ／ｃｍ2（ゲー
ジ圧力）に保持されることが好ましい。The low-temperature liquefied gas L is stored in the inner tank 3 together with the filling. However, for the sake of safety, the low-temperature liquefied gas L is prevented from being overfilled in the inner tank 3 by, for example, the capacity of the inner tank 3. Of the low-temperature liquefied gas L that is filled (overfilled) to 90% or more of the
Flows into the pipe 25 through the tip opening 25a of the storage tank 1 and is discharged outside the heat-insulating storage tank 1 through the valve 24. In other words, a structure is formed in which the gas space portion S of at least 10% of the volume of the inner tank 3 is always formed and maintained above the inner tank 3 of the heat insulating storage tank 1. The amount of the low-temperature liquefied gas L stored in the inner tank 3 is controlled by the pipe 19 connected to the bottom of the inner tank 3.
And a pipe end connected to a pipe 21 opened and connected to the gas layer space S of the inner tank 3, for example, is confirmed by a differential pressure type liquid level gauge 22. The pressure in the inner tank 3 is checked by a pressure gauge 23 provided on a pipe 21 which is opened and connected to the gas space S of the inner tank 3. At the end of the filling, the access valve V, the valves 8, 18 and 24 are closed.
When the pressure in the inner tank 3 reaches a predetermined pressure or more, the safety valve 26 provided in the discharge pipe 17 is operated appropriately, and the inside of the inner tank 3 is always kept at a predetermined pressure [maximum pressure of about 14 kgf /
cm 2 (gauge pressure)].
Generally, it is preferable that the pressure in the inner tank 3 is maintained at 0 to 2 kgf / cm 2 (gauge pressure).
【００１２】このようにして、低温液化ガスＬを充填し
て貯液した断熱貯槽装置２０はタンクローリー車に搭載
されて、内槽３内圧力を０〜２ｋgｆ／ｃｍ2（ゲージ圧
力）に保持して使用先に運搬される。そして、使用先の
断熱貯槽タンクに移充填される。そして、移充填にあた
っては、先ず断熱貯槽装置２０の断熱貯槽１の内槽３内
の圧力を、移充填すべき使用先に設置してある断熱貯槽
タンク内の保持圧力以上の圧力に昇圧せしめる。一般に
低温液化ガスＬの使用先の断熱貯槽タンク内の圧力は、
供給むらが無く均一に継続して確実に供給維持し得るよ
うにするため、６〜１０ｋgｆ／ｃｍ2（ゲージ圧力）に
保持されているのが実情である。このためタンクローリ
ーに搭載されてきた輸送用の断熱貯槽装置２０の断熱貯
槽１内の圧力を、使用先の断熱貯槽タンク内の圧力６〜
１０ｋgｆ／ｃｍ2（ゲージ圧力）より高い圧力好ましく
は１２〜１４ｋgｆ／ｃｍ2（ゲージ圧力）に昇圧する必
要があった。In this way, the insulated storage tank device 20 filled and stored with the low-temperature liquefied gas L is mounted on a tank truck, and maintains the pressure in the inner tank 3 at 0 to 2 kgf / cm 2 (gauge pressure). Transported to the destination. Then, it is transferred and filled into the insulated storage tank at the place of use. When transferring and filling, first, the pressure in the inner tank 3 of the heat-insulating storage tank 1 of the heat-insulating storage tank device 20 is increased to a pressure equal to or higher than the holding pressure in the heat-insulating storage tank installed at the place of use to be transferred and filled. Generally, the pressure in the insulated storage tank where the low-temperature liquefied gas L is used is:
Actually, the pressure is maintained at 6 to 10 kgf / cm 2 (gauge pressure) so that the supply can be uniformly and continuously maintained without supply unevenness. For this reason, the pressure in the heat-insulating storage tank 1 of the transport heat-insulating storage device 20 mounted on the tank lorry is reduced to a pressure of 6 to 6 in the heat-insulating storage tank used.
10 kgf / cm 2 higher pressures (gauge pressure) is preferably had to be raised to 12~14kgf / cm 2 (gauge pressure).
【００１３】これは、弁１３、弁１５を開にして、その
他の弁は閉として、内槽３内の低温液化ガスＬを底部か
ら加圧用抽出管１２により導出して弁１３を介して蒸発
器１４に導入せしめ、該蒸発器１４でこれを気化せしめ
て、気化した気体を弁１５を経て加圧気体導入管１６に
より内槽３内の気層空間部Ｓに導入して、内槽３内の圧
力を上昇せしめる。そして、前記した如く１２〜１４ｋ
gｆ／ｃｍ2（ゲージ圧力）の所定の圧力に達したら、弁
１１及び出入弁Ｖを開いて低温液化ガスＬを内槽３の底
部から導出管１０により導出し、弁１１及び出入弁Ｖを
介して導出入主管９により使用先の断熱貯槽タンクに供
給送液し、移充填貯液する。This is because the valves 13 and 15 are opened, the other valves are closed, and the low temperature liquefied gas L in the inner tank 3 is led out from the bottom through the pressurizing extraction pipe 12 and evaporated through the valve 13. The vaporized gas is vaporized by the evaporator 14, and the vaporized gas is introduced into the gas layer space S in the inner tank 3 through the valve 15 through the pressurized gas introduction pipe 16. Increase the pressure inside. And, as described above, 12-14k
When a predetermined pressure of gf / cm 2 (gauge pressure) is reached, the valve 11 and the inlet / outlet valve V are opened, and the low-temperature liquefied gas L is led out from the bottom of the inner tank 3 by the outlet pipe 10. Through the lead-in / out main pipe 9, the liquid is supplied to the heat-insulated storage tank at the use destination, and is transferred and stored.
【００１４】[0014]
【発明が解決しようとする課題】このようにして、使用
先の工場の断熱貯槽タンクに低温液化ガスＬを移充填し
た後に、次いで他の使用先へと低温液化ガスＬを運搬す
るため、輸送用の断熱貯槽装置２０の断熱貯槽１に、引
き続いて低温液化ガスＬの製造工場の大型断熱貯槽か
ら、低温液化ガスＬを再充填することとなる。しかる
に、このときタンクローリー車に搭載されている断熱貯
槽装置２０の断熱貯槽１の内槽３内の圧力は、前記先の
使用先工場の断熱貯槽タンクへの充填にあたって１２〜
１４ｋgｆ／ｃｍ2（ゲージ圧力）にまで昇圧されてお
り、低温液化ガス製造工場の低温液化ガスＬの大型断熱
貯槽内の払い出し圧力６ｋgｆ／ｃｍ2（ゲージ圧力）よ
り極めて高い圧力になっていて、この状態では圧力の低
い低温液化ガス製造工場の低温液化ガスＬの大型断熱貯
槽より、圧力の高い輸送用の断熱貯槽装置２０の断熱貯
槽１に低温液化ガスＬを送液することができない。After the low-temperature liquefied gas L has been transferred and filled in the heat-insulating storage tank of the factory where the liquefied gas is used, the low-temperature liquefied gas L is then transported to another use destination. The low-temperature liquefied gas L is subsequently refilled from the large-sized heat-insulated storage tank of the low-temperature liquefied gas L manufacturing plant into the heat-insulated storage tank 1 of the heat-insulated storage tank device 20. However, at this time, the pressure in the inner tank 3 of the adiabatic storage tank 1 of the adiabatic storage tank device 20 mounted on the tank lorry vehicle is 12 to 12 when filling the adiabatic storage tank of the previously used plant.
14 kgf / cm 2 are boosted until the (gauge pressure), it becomes very high pressures than payout pressure 6 kgf / cm 2 in the large adiabatic reservoir of cryogenic liquefied gas L of low-temperature liquefied gas production plant (gauge pressure), In this state, the low-temperature liquefied gas L cannot be sent from the large-sized adiabatic storage tank for the low-temperature liquefied gas L at the low-temperature liquefied gas manufacturing plant having a low pressure to the adiabatic storage tank 1 of the adiabatic storage device 20 for high-pressure transport.
【００１５】そこで、この送液を可能にして移充填をす
るには、低温液化ガス製造工場の大型の断熱貯槽内の圧
力を昇圧せしめるか、輸送用の断熱貯槽装置２０の断熱
貯槽１内の圧力を降圧せしめることが必要である。しか
し、大型の断熱貯槽の圧力を高い圧力に昇圧せしめるこ
とは、安全性確保の点から好ましくないばかりか、断熱
貯槽自体の容積が大きいため、昇圧するために多くの時
間を要して作業効率の点でも問題がある。このため、輸
送用の断熱貯槽装置２０の断熱貯槽１内の圧力を降圧せ
しめる方法が採用されているが、この方法は、弁１８を
開にして、加圧気体導入管１６より分岐している放出管
１７を経て、断熱貯槽１内の気層空間Ｓの気体を導出し
て液化器に導いて再液化して回収したり、又ただ単に大
気に放出せしめる方法が採られていた。Therefore, in order to perform the liquid transfer and perform the transfer and filling, the pressure in the large insulated storage tank of the low-temperature liquefied gas manufacturing plant is increased or the pressure in the insulated storage tank 1 of the insulated storage tank device 20 for transportation is increased. It is necessary to reduce the pressure. However, increasing the pressure of a large insulated storage tank to a high pressure is not only undesirable from the viewpoint of ensuring safety, but also requires a lot of time to increase the pressure because of the large volume of the insulated storage tank itself. There is also a problem in the point. For this reason, a method of reducing the pressure in the heat-insulating storage tank 1 of the heat-insulating storage tank device 20 for transportation is adopted. In this method, the valve 18 is opened to branch off from the pressurized gas introduction pipe 16. A method has been adopted in which the gas in the gas layer space S in the heat-insulating storage tank 1 is led out through the discharge pipe 17 and guided to a liquefier to be reliquefied and collected, or simply discharged to the atmosphere.
【００１６】しかるに、前記再液化して回収する方法に
あっては、高価な液化器を別途に設置することとなって
装置価格が大幅に上昇することと、運転操作が煩雑とな
る等の問題が生じる。従って、断熱貯槽１内の気層空間
Ｓの気体を導出して、大気に放出せしめているのが実情
である。それ故に、有効で高価なガスを無駄にして大き
な損失を招いているばかりか、所定の低い圧力にするた
めの大気放出に多くの時間を費やすという大きな問題が
あった。However, in the above-mentioned method of reliquefying and recovering, there is a problem in that an expensive liquefier is separately installed, so that the price of the apparatus is greatly increased, and the operation is complicated. Occurs. Therefore, the fact is that the gas in the gas space S in the heat insulating storage tank 1 is derived and released to the atmosphere. Therefore, there is a serious problem that not only wasteful and expensive gas is wasted and large loss is caused, but also a lot of time is spent for releasing the air to a predetermined low pressure.
【００１７】又、上記した図２に図示した輸送用の断熱
貯槽装置２０の断熱貯槽１内の低温液化ガスの導出送液
を、内槽３内を蒸発器１４で気化した気体で加圧するの
に代えて、加圧送液ポンプを配設して搭載する装置があ
る。この場合蒸発器１４に代えて、点線で表示する如く
加圧送液ポンプＰを導出管１０に配設するもので、断熱
貯槽１内の 低温液化ガスＬを底部より加圧送液ポンプ
Ｐで吸引導出せしめて、該加圧送液ポンプＰで昇圧せし
め、使用先工場の断熱貯槽タンクへと送液するので、断
熱貯槽１の使用圧力を低く抑えることが可能であり、送
液にあたって輸送用の断熱貯槽装置２０の断熱貯槽１内
の圧力を昇圧せしめることなく送液することができる。
従って、このような場合、断熱貯槽１の最高使用圧力は
４ｋgf／ｃｍ2（ゲージ圧力）と低い圧力に設計されて
いる。そして、この種の装置の場合、断熱貯槽１より低
温液化ガスＬを導出して、使用先に移充填するための送
液にあたっては、移充填前に加圧送液ポンプＰを予冷す
る必要があり、出入弁Ｖを閉状態にし、弁１１及び弁８
を開状態にして、断熱貯槽１より低温液化ガスＬを加圧
送液ポンプＰに送液し、これを冷却する。そして、加圧
送液ポンプＰを冷却した結果、気化する低温液化ガスの
気化ガスは弁８、管６介して断熱貯槽１内に戻して回収
している。Further, the low-temperature liquefied gas derived and sent in the heat-insulating storage tank 1 of the heat-insulating storage tank apparatus 20 for transportation shown in FIG. 2 is pressurized in the inner tank 3 with the gas vaporized by the evaporator 14. Instead of this, there is a device in which a pressurized liquid sending pump is arranged and mounted. In this case, instead of the evaporator 14, a pressurized liquid sending pump P is provided in the outlet pipe 10 as indicated by a dotted line, and the low temperature liquefied gas L in the heat insulating storage tank 1 is suctioned and drawn out from the bottom by the pressurized liquid sending pump P. At the very least, the pressure is increased by the pressurized liquid sending pump P, and the liquid is sent to the insulated storage tank at the factory where it is used, so that the working pressure of the insulated storage tank 1 can be kept low. The liquid can be sent without increasing the pressure in the heat insulating storage tank 1 of the device 20.
Therefore, in such a case, the maximum working pressure of the heat insulating storage tank 1 is designed to be as low as 4 kgf / cm 2 (gauge pressure). In the case of this type of apparatus, when the low-temperature liquefied gas L is derived from the adiabatic storage tank 1 and the liquid is transferred for use at the place of use, it is necessary to pre-cool the pressurized liquid supply pump P before the transfer and filling. , The access valve V is closed, and the valves 11 and 8 are closed.
Is opened, the low-temperature liquefied gas L is sent from the adiabatic storage tank 1 to the pressurized liquid sending pump P, and cooled. Then, as a result of cooling the pressurized liquid sending pump P, the vaporized low-temperature liquefied gas that is vaporized is returned to the heat-insulating storage tank 1 via the valve 8 and the pipe 6 and collected.
【００１８】しかるに、この輸送用断熱貯槽装置では、
使用先の断熱貯槽タンクに低温液化ガスＬを送液して移
充填するにあたって、出入弁Ｖを開状態にして加圧送液
ポンプＰを駆動している間、断熱貯槽１内の液面の降下
に伴い加圧送液ポンプＰの入り口圧力が降下するのを防
ぐため、弁８を微開にして、加圧送液ポンプＰの出口圧
力を断熱貯槽１内に回収して、断熱貯槽１内の圧力を一
定に維持している。このようなことにより、使用先の断
熱貯槽タンクに送液して移充填が終了した時点では、輸
送用の断熱貯槽装置２０の断熱貯槽１内の圧力は３〜
３.５ｋgf／ｃｍ2（ゲージ圧力）となっている。そして
又、輸送中の振動や外部熱の侵入による気化ガスの発生
によって、設計した最高使用圧力の４ｋgf／ｃｍ2（ゲ
ージ圧力）以上に、断熱貯槽１内の圧力が上昇すること
は避けることができない。従って、このような加圧送液
ポンプＰを配設した輸送用の断熱貯槽装置２０であって
も、断熱貯槽１内の圧力を降下せしめるため、断熱貯槽
１内気体を大気に放出しなくてはならないという前記し
た問題を避けることできなかった。However, in this heat insulating storage tank device for transportation,
When the low-temperature liquefied gas L is sent to the used adiabatic storage tank for transfer and filling, the liquid level in the adiabatic storage tank 1 drops while the inlet / outlet valve V is opened and the pressurized liquid supply pump P is driven. In order to prevent the inlet pressure of the pressurized liquid sending pump P from dropping due to the above, the valve 8 is slightly opened, and the outlet pressure of the pressurized liquid sending pump P is collected in the adiabatic storage tank 1. Is kept constant. As a result, the pressure in the heat-insulating storage tank 1 of the heat-insulating storage tank device 20 for transport is 3 to 4 at the time when the liquid is sent to the heat-insulating storage tank of the use destination and the transfer and filling is completed.
It is 3.5 kgf / cm 2 (gauge pressure). Also, it is necessary to avoid that the pressure in the heat insulating storage tank 1 rises above the designed maximum operating pressure of 4 kgf / cm 2 (gauge pressure) due to the generation of vaporized gas due to vibration during transportation or penetration of external heat. Can not. Therefore, even in the heat insulating storage tank device 20 for transportation provided with such a pressurized liquid sending pump P, in order to lower the pressure in the heat insulating storage tank 1, the gas in the heat insulating storage tank 1 must be released to the atmosphere. The above-mentioned problem of not being able to be avoided could not be avoided.
【００１９】上記した現状に鑑み、本発明は低温液化ガ
スを製造工場より使用先に輸送する断熱貯槽装置におい
て、上昇した断熱貯槽内の圧力を、断熱貯槽内の気体を
大気に無駄に放出することなく降圧することを目的と
し、そして、そのため断熱貯槽内の気体を大気に放出す
ることなく再液化して回収することを可能として、輸送
用断熱貯槽から使用先の断熱貯槽タンクへの移充填と、
その後の製造工場の大型断熱貯槽から輸送用断熱貯槽へ
の送液移充填とを、適宜行なうことが可能な圧力になる
ように、輸送用断熱貯槽の圧力調整を無駄なく運転操作
するこを可能とした低温液化ガスの輸送用断熱貯槽装置
の提供を本発明の課題とする。In view of the above-mentioned situation, the present invention provides a heat-insulating storage device for transporting a low-temperature liquefied gas from a manufacturing plant to a use place, and wastefully discharges the gas in the heat-insulating storage to the atmosphere by increasing the pressure in the heat-insulating storage tank. The purpose of this method is to reduce the pressure without pressure, and to re-liquefy and recover the gas in the insulated storage tank without releasing it to the atmosphere. When,
It is possible to operate the heat-insulating storage tank for transport without wasting pressure so that the liquid can be transferred and filled from the large-scale heat-insulating storage tank of the manufacturing plant to the heat-insulating storage tank for transportation. An object of the present invention is to provide a heat insulating storage tank device for transporting a low-temperature liquefied gas.
【００２０】[0020]
【課題を解決するための手段】上記した問題点を解消
し、本発明の課題を解決するため、請求項１に係る発明
は、低温液化ガスを貯蔵して使用先に輸送して、送液す
るための加圧手段を具備してなる断熱貯槽装置であっ
て、断熱貯槽の内槽内の上方気層空間部に位置して冷却
用冷媒を流通せしめる管よりなる熱交換器を配し、その
管端が槽璧を気密に貫通して槽外に延びて配設されてな
ることを特徴とする低温液化ガス輸送用断熱貯槽装置と
したものであり、請求項２に係る発明は、熱交換器はア
ルミニウムでなり、その管端はステンレス鋼でなる配管
が連結されてなることを特徴とする請求項１に記載の低
温液化ガス輸送用断熱貯槽装置としたものであり、請求
項３に係る発明は、具備している加圧手段が、貯液され
ている液化ガスを気化してこれを貯槽の内槽内に送気す
る蒸発器であることを特徴とする請求項１又は請求項２
に記載の低温液化ガス輸送用断熱貯槽装置としたもので
あり、請求項４に係る発明は、具備している加圧手段が
内槽内と連通してなる加圧送液ポンプであることを特徴
とする請求項１又は請求項２に記載の低温液化ガス輸送
用断熱貯槽装置としたものである。In order to solve the above-mentioned problems and to solve the problems of the present invention, the invention according to claim 1 stores a low-temperature liquefied gas, transports it to a use destination, An adiabatic storage device equipped with a pressurizing means for performing a heat exchanger comprising a pipe through which a cooling refrigerant flows, which is located in an upper gas space in the inner tank of the adiabatic storage tank, The low-temperature liquefied gas transport heat-insulating storage tank device is characterized in that the end of the pipe extends airtightly through the tank wall and extends outside the tank. The heat exchanger for low temperature liquefied gas transport according to claim 1, wherein the exchanger is made of aluminum, and a pipe end of which is connected to a pipe made of stainless steel. According to the invention, the pressurizing means provided vaporizes the stored liquefied gas. Te characterized in that this is a vaporizer that air in the reservoir inner tank according to claim 1 or claim 2
The invention according to claim 4 is a pressurized liquid feed pump in which the pressurizing means provided is in communication with the inside of the inner tank. A low-temperature liquefied gas transport heat-insulating storage tank device according to claim 1 or 2.
【００２１】[0021]
【発明の実施の形態】本発明の低温液化ガス輸送用断熱
貯槽装置の実施の形態について図１を参照して説明す
る。図１はタンクローリー車に搭載する本発明の低温液
化ガス輸送用断熱貯槽装置の一例を説明する構成系統概
略図である。なお、図１において図２と共通する構成部
分は、図２の符号と同一の符号を付してその詳細な説明
は省略する。図１に図示する如く、本発明の低温液化ガ
ス輸送用断熱貯槽装置３０の特徴は、前記した図２で説
明した従来の低温液化ガス輸送用断熱貯槽装置２０にお
ける断熱貯槽１の内槽３内の上部気層空間部Ｓに液体窒
素の如き極低温液化ガスの冷媒が流通する管路よりなる
熱交換器３１を設けた点にある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an insulated storage tank for transporting low-temperature liquefied gas according to the present invention will be described with reference to FIG. FIG. 1 is a schematic diagram showing the configuration of a heat-insulating storage tank device for transporting low-temperature liquefied gas of the present invention, which is mounted on a tank truck. In FIG. 1, components common to those in FIG. 2 are denoted by the same reference numerals as those in FIG. 2, and detailed description thereof will be omitted. As shown in FIG. 1, the features of the low-temperature liquefied gas transport insulated storage device 30 of the present invention are as follows. Is provided with a heat exchanger 31 composed of a pipe through which a refrigerant of a cryogenic liquefied gas such as liquid nitrogen flows in the upper gas layer space S.
【００２２】即ち、本発明の低温液化ガス輸送用断熱貯
槽装置３０は、断熱層４を介在してほぼ同軸に配された
外槽２と内槽３とよりなる断熱貯槽１の内槽３内の上部
に形成される気層空間部Ｓに、低温液化ガスの如き冷媒
が流通可能な管よりなる熱交換器３１が設けられてい
る。そして、その一方の管端３１ａは内槽３の壁、断熱
層４、外槽２の壁を気密に貫通して外部に延びて逆止弁
３３、開閉弁３４を配設してなる冷媒導入管３２に連結
されている。又、他方の管端３１ｂは、同様に内槽３の
壁、断熱層４、外槽２の壁を気密に貫通して外部に延び
て熱交換器内を一定圧力に保持するための保圧弁３６を
配設してなる冷媒導出管３５に連結されている。なお、
符号３７は冷媒導出管３５に連結して設けた圧力計で、
熱交換器３１の管路内の圧力を監視するものである。That is, the heat-insulating storage tank device 30 for transporting low-temperature liquefied gas of the present invention comprises a heat-insulating storage tank 1 having an outer tank 2 and an inner tank 3 which are disposed substantially coaxially with a heat insulating layer 4 interposed therebetween. A heat exchanger 31 formed of a tube through which a refrigerant such as a low-temperature liquefied gas can flow is provided in a gas layer space S formed at an upper portion of the gas layer space S. One of the pipe ends 31a is airtightly penetrated through the wall of the inner tank 3, the heat insulating layer 4, and the wall of the outer tank 2, and extends to the outside to introduce a refrigerant having a check valve 33 and an on-off valve 34. It is connected to a tube 32. Similarly, the other pipe end 31b is airtightly penetrated through the wall of the inner tank 3, the heat insulating layer 4, and the wall of the outer tank 2, and extends to the outside to hold the inside of the heat exchanger at a constant pressure. 36 is connected to a refrigerant outlet pipe 35 provided with the same. In addition,
Reference numeral 37 denotes a pressure gauge connected to the refrigerant outlet pipe 35,
The pressure in the pipe of the heat exchanger 31 is monitored.
【００２３】このように断熱貯槽１の内槽３内の気層空
間部Ｓに熱交換器３１を配した本発明の低温液化ガス輸
送用断熱貯槽装置３０を用いて、低温液化ガスＬの製造
工場の大型断熱貯槽から本発明断熱貯槽１への低温液化
ガスＬの受け入れ移充填作業、及び当該断熱貯槽装置３
０によって運搬してきた低温液化ガスＬを断熱貯槽１か
ら使用先工場の断熱貯槽タンクに送液して移充填する作
業は、いずれも前記図１で説明した従来の低温液化ガス
輸送用断熱貯槽装置２０での作業操作と同じ作業操作で
行うものである。As described above, the low-temperature liquefied gas L is produced using the heat-insulated storage tank device 30 for transporting low-temperature liquefied gas of the present invention in which the heat exchanger 31 is disposed in the gas space S in the inner tank 3 of the heat-insulated storage tank 1. Work for receiving and transferring low-temperature liquefied gas L from a large insulated storage tank of a factory to the insulated storage tank 1 of the present invention, and the insulated storage apparatus 3
The operation of sending and transferring the low-temperature liquefied gas L transported from the heat-insulated storage tank 1 from the heat-insulated storage tank 1 to the heat-insulated storage tank at the factory in which it is used is the conventional heat-insulated storage apparatus for transporting low-temperature liquefied gas described with reference to FIG. The operation is performed by the same operation as the operation at 20.
【００２４】そして、これらの作業操作の間に、輸送用
断熱貯槽装置３０の断熱貯槽１の内槽３内の圧力が上昇
して、低温液化ガス製造工場の低圧の大型断熱貯槽から
断熱貯槽１への低温液化ガスＬの送液移充填が困難にな
った時は、開閉弁３４を開にして、断熱貯槽１に貯液さ
れている低温液化ガスＬより沸点の低い低温液化ガスを
冷媒として冷媒導入管３２に導入して熱交換器３１に流
通せしめ、冷媒導出管３５より保圧弁３６を介して導出
する。このようにして、冷媒を熱交換器３１に連続して
流して、気層空間部Ｓに滞留する気体を冷却してこれを
凝縮液化せしめ、内槽３内に流下せしめて回収する。そ
の結果、昇圧していた内槽３内の圧力は降下し、低温液
化ガス製造工場の大型断熱貯槽から輸送用断熱貯槽装置
３０の断熱貯槽１に、低温液化ガスＬを受け入れる移充
填を極めて容易に行なうことが出来る。なお、導出管３
５で導出した冷媒は回収し循環再使用することが望まし
い。During these work operations, the pressure in the inner tank 3 of the heat-insulating storage tank 1 of the heat-insulating storage tank apparatus for transport 30 rises, and the large-diameter heat-insulating storage tank 1 of the low-temperature liquefied gas manufacturing plant moves from the low-pressure insulated storage tank 1 to the heat-insulating storage tank 1. When it is difficult to transfer and charge the low-temperature liquefied gas L to the low-temperature liquefied gas L, the on-off valve 34 is opened, and the low-temperature liquefied gas having a lower boiling point than the low-temperature liquefied gas L stored in the adiabatic storage tank 1 is used as the refrigerant. The refrigerant is introduced into the refrigerant introduction pipe 32 to be circulated through the heat exchanger 31, and is discharged from the refrigerant discharge pipe 35 via the pressure holding valve 36. In this way, the refrigerant is continuously flowed through the heat exchanger 31 to cool the gas remaining in the gas layer space S to be condensed and liquefied, and to flow down into the inner tank 3 for recovery. As a result, the pressure in the inner tank 3, which has been increased, drops, and it is extremely easy to transfer and fill the low-temperature liquefied gas L from the large-sized heat-insulated storage tank of the low-temperature liquefied gas manufacturing plant to the heat-insulated storage tank 1 of the transport heat-insulated storage device 30. Can be performed. The outlet pipe 3
It is desirable that the refrigerant derived in step 5 be recovered and circulated and reused.
【００２５】上記した冷媒としては、輸送運搬する低温
液化ガスＬが、例えば液体酸素（沸点：１気圧で−１８
２.８℃）、液体アルゴン（沸点：１気圧でー１８５.５
℃）である場合には、冷媒としてはこれらより沸点の低
い液体窒素（沸点：１気圧で−１９５.６℃）、液体ヘ
リウム（沸点：１気圧で−２６８.７℃）や液体水素
（沸点：１気圧で−２５２．６℃）等の低温液化ガスが
が好適に使用し得る。そして、この冷媒はこれらに限定
されるもので無く、断熱貯槽装置３０で輸送運搬される
低温液化ガスＬによって、その低温液化ガスＬの沸点よ
り低い沸点を有する低温液化ガスを冷媒として適宜選択
して使用すれば良いことは勿論である。As the above-mentioned refrigerant, low-temperature liquefied gas L to be transported and transported is, for example, liquid oxygen (boiling point: -18 at 1 atm.).
2.8 ° C), liquid argon (boiling point: -185.5 at 1 atm)
° C), liquid nitrogen having a boiling point lower than these (boiling point: -195.6 ° C at 1 atm), liquid helium (boiling point: -268.7 ° C at 1 atm) or liquid hydrogen (boiling point: A low-temperature liquefied gas such as 1: 1 atm -252.6 ° C) can be suitably used. The refrigerant is not limited to these, and a low-temperature liquefied gas having a boiling point lower than the boiling point of the low-temperature liquefied gas L is appropriately selected as the refrigerant by the low-temperature liquefied gas L transported and transported in the adiabatic storage tank device 30. Needless to say, it can be used.
【００２６】又、前記断熱貯槽１内に配設する熱交換器
３１は、加工の容易性と、当該低温分野での塔槽類や配
管類に通常一般に使用されているステンレス鋼を同様に
使用し、これを、同様にステンレス鋼でなる冷媒の導入
・出管３２、３５と結合して、同一の材料のステンレス
鋼の一体配管にして形成して設置した。 しかし、より
熱交換効率を高めて熱交換させるために、熱交換器３１
の配管をアルミニウム製にしたり、配管にフィンを付設
せしめたりするとより効果的である。又、内槽３内に配
する熱交換器３１のみを熱伝導率の良いアルミニウム製
として、これに連設する導入・出管３２、３５を熱伝導
率の低いステンレス鋼とすると、これに流通せしめる冷
媒をより一層効率良く使用することができる。The heat exchanger 31 disposed in the heat-insulating storage tank 1 is made of stainless steel commonly used for towers and pipes in the low-temperature field in the same manner as the heat exchanger 31 for ease of processing. This was combined with the inlet and outlet pipes 32 and 35 of the refrigerant made of stainless steel in the same manner, and formed and installed as an integral pipe of stainless steel of the same material. However, in order to increase the heat exchange efficiency and perform the heat exchange, the heat exchanger 31
It is more effective if the pipe is made of aluminum or fins are attached to the pipe. If only the heat exchanger 31 disposed in the inner tank 3 is made of aluminum having a high heat conductivity, and the inlet / outlet pipes 32 and 35 connected to the heat exchanger 31 are made of stainless steel having a low heat conductivity, the heat exchanger 31 flows through this. The refrigerant can be used more efficiently.
【００２７】[0027]
【実施例】次に、本発明の低温液化ガス輸送用断熱貯槽
装置３０をタンクローリーに搭載して使用し、そして、
その断熱貯槽１に低温液化ガスＬを製造工場の大型断熱
貯槽から受け入れ貯蔵し、これを使用先工場に輸送運搬
して該使用先工場の断熱貯槽タンクに送液して移充填し
た実施例について説明する。なお,使用した本発明の低
温液化ガス輸送用断熱貯槽装置３０の仕様諸元は以下の
通りである。Next, the insulated storage tank device 30 for transporting low-temperature liquefied gas of the present invention is mounted on a tank truck and used.
An example in which the low-temperature liquefied gas L is received and stored in the heat-insulating storage tank 1 from the large-size heat-insulating storage tank of the manufacturing plant, transported to the plant where the device is used, sent to the heat-insulating storage tank of the plant where it is used, and transferred and filled. explain. The specifications of the used adiabatic storage tank device 30 for transporting low-temperature liquefied gas of the present invention are as follows.
【００２８】●使用した断熱貯槽１の仕様諸元 ・外槽２：材質をステンレス鋼とした。 ・内槽３：材質をステンレス鋼とし、積載容積を５,５
００ｍ3とした。 ・断熱層４：外槽２と内槽３との間の約１５０mmの空間
に、パーライト粉末を充填するとともに、空間内を５×
１０-2Ｔorr.以下の真空度に保持するようにした。 ・配管類：材質をステンレス鋼の配管を使用した。● Specifications of the used heat insulating storage tank 1 ・ Outer tank 2: The material was stainless steel.・ Inner tank 3: Made of stainless steel, loading capacity is 5.5
00 m 3 . Heat insulation layer 4: A space of about 150 mm between the outer tank 2 and the inner tank 3 is filled with pearlite powder, and the space is 5 ×
The degree of vacuum was kept below 10 -2 Torr. -Piping: Stainless steel piping was used.
【００２９】●設置した熱交換器３１の仕様諸元 ・材質：ステンレス鋼の管を使用した。 ・配管寸法：外径１３.８mm、肉厚１.６５mm、長さ３０
ｍの管を蛇行せしめて配した。● Specifications of the installed heat exchanger 31 ・ Material: A stainless steel tube was used.・ Piping dimensions: outer diameter 13.8mm, wall thickness 1.65mm, length 30
m was arranged in a meandering manner.
【００３０】●加圧方式は蒸発器１４を使用した。 ・材質：アルミニウム。 ・形式：スターフィン型空温式蒸発器。● The evaporator 14 was used for the pressurizing method. -Material: aluminum. -Type: Star fin type air-heated evaporator.
【００３１】上記した仕様諸元よりなる本発明の低温液
化ガス輸送用断熱貯槽装置３０の断熱貯槽１に、導出入
主管９を低温液化ガス製造工場の大型断熱貯槽に連結し
弁８を開いて、大型断熱貯槽より、該槽で２.０ｋgｆ／
ｃｍ2（ゲージ圧力）にて貯液されている液体アルゴン
を、導出入主管９、弁８、導入管６及びシャワー状噴出
管７を介して５,５００ｍ3の量を１.５ｋgｆ／ｃｍ
2（ゲージ圧力）の圧力にして充填し貯蔵した。これ
を、タンクローリー車により使用先工場に運搬輸送し
て、該使用先工場に設置してある断熱貯槽タンクに移充
填する。移充填に先だって使用先工場の断熱貯槽タンク
の圧力を確認したところ、８ｋgｆ／ｃｍ2（ゲージ圧
力）であった。The lead-in main pipe 9 is connected to the large-diameter heat-insulating storage tank of the low-temperature liquefied-gas production plant, and the valve 8 is opened. From a large insulated storage tank, 2.0kgf /
The liquid argon stored in cm 2 (gauge pressure) was supplied to the inlet / outlet main pipe 9, the valve 8, the inlet pipe 6, and the shower-like jet pipe 7 in an amount of 5,500 m 3 to 1.5 kgf / cm.
Filled and stored at a pressure of 2 (gauge pressure). This is transported and transported by a tank lorry to a factory where it is used, and is transferred and filled into an insulated storage tank installed in the factory where it is used. Prior to the transfer and filling, the pressure of the insulated storage tank at the factory where the product was used was confirmed to be 8 kgf / cm 2 (gauge pressure).
【００３２】そこで、低温液化ガス輸送用断熱貯槽装置
３０の断熱貯槽１の圧力を、弁１３、弁１５を開にして
蒸発器１４に加圧用抽出管１２を介して液体アルゴンを
導入してこれを気化せしめ、次いで気化した気体アルゴ
ンを加圧気体導入管１６を介して断熱貯槽１に戻し、１
３ｋgｆ／ｃｍ2（ゲージ圧力）の圧力まで昇圧せしめ
た。そして引き続き、弁１１を開いて断熱貯槽１の底部
より導出管１０を介して液体アルゴンを導出し、更に弁
１１を介して導出入主管９から８ｋgｆ／ｃｍ2（ゲージ
圧力）の高い圧力に保持されている使用先工場の断熱貯
槽タンクに送液し得て、移充填をすることが出来た。移
充填後の輸送用断熱貯槽装置３０の断熱貯槽１の圧力
は、そのままの１３ｋgｆ／ｃｍ2（ゲージ圧力）の圧力
を保持しており、又内槽３内には約５００ｍ3の液体ア
ルゴンが残って、なお貯液されていた。Therefore, the pressure in the heat-insulating storage tank 1 of the heat-insulating storage tank device 30 for transporting low-temperature liquefied gas is increased by opening the valves 13 and 15 and introducing liquid argon into the evaporator 14 through the pressurizing extraction pipe 12. Is vaporized, and the vaporized gaseous argon is returned to the heat-insulating storage tank 1 via the pressurized gas introduction pipe 16 and
The pressure was increased to a pressure of 3 kgf / cm 2 (gauge pressure). Subsequently, the valve 11 is opened, liquid argon is led out from the bottom of the heat-insulating storage tank 1 through the outlet pipe 10, and is kept at a high pressure of 8 kgf / cm 2 (gauge pressure) from the inlet / outlet main pipe 9 through the valve 11. The liquid could be sent to the adiabatic storage tank at the factory where it was used, and could be refilled. The pressure in the heat-insulating storage tank 1 of the transport heat-insulating storage device 30 after the transfer and filling keeps the same pressure of 13 kgf / cm 2 (gauge pressure), and about 500 m 3 of liquid argon is stored in the inner tank 3. It remained and was still stored.
【００３３】このようにして、使用先工場の断熱貯槽タ
ンクに液体アルゴンを充填供給した後、本発明の輸送用
断熱貯槽装置３０は、更に他の使用先工場に液体アルゴ
ンを輸送運搬するため、液体アルゴンを製造している低
温液化ガス製造工場の大型断熱貯槽に戻り、再び大型断
熱貯槽より液体アルゴンを受け入れ充填することとし
た。この時本発明の輸送用断熱貯槽装置３０の断熱貯槽
１内の圧力は、帰りの運行中に液体アルゴンの過冷却に
よって気層部空間Ｓに存在する気体アルゴンが凝縮して
再液化して滴下し、８ｋgｆ／ｃｍ2（ゲージ圧力）の圧
力まで降圧していた。しかし、未だ低温液化ガス製造工
場の大型断熱貯槽での液体アルゴン払出し圧力６ｋgｆ
／ｃｍ2（ゲージ圧力）より高い圧力なので、この払出
し圧力６ｋgｆ／ｃｍ2（ゲージ圧力）の大型断熱貯槽か
ら、これより高い圧力８ｋgｆ／ｃｍ2（ゲージ圧力）を
保持している輸送用の断熱貯槽１に、液体アルゴンを送
液して移充填することはできない。After the liquid argon is filled and supplied to the adiabatic storage tank of the used plant in this manner, the transporting adiabatic storage device 30 of the present invention further transports and transports the liquid argon to another used plant. Returning to the large insulated storage tank at the low-temperature liquefied gas manufacturing plant that produces liquid argon, we decided to receive and refill liquid argon from the large insulated storage tank again. At this time, the pressure in the heat-insulating storage tank 1 of the heat-insulating storage tank device for transport 30 of the present invention is reduced by the supercooling of the liquid argon during the return operation, whereby the gaseous argon existing in the gas space S is condensed, reliquefied, and dropped. Then, the pressure was reduced to a pressure of 8 kgf / cm 2 (gauge pressure). However, the liquid argon discharge pressure 6kgf in the large insulated storage tank of the low-temperature liquefied gas manufacturing plant is still
/ Cm 2 because a pressure higher than (gauge pressure), heat insulation from a large thermal insulation tank, which higher pressures 8 kgf / cm 2 for transporting holding the (gauge pressure) of the payout pressure 6 kgf / cm 2 (gauge pressure) Liquid argon cannot be transferred to the storage tank 1 for transfer and filling.
【００３４】そこで、輸送用の断熱貯槽１の圧力８ｋg
ｆ／ｃｍ2（ゲージ圧力）を、低温液化ガス製造工場の
大型断熱貯槽の払出し圧力６ｋgｆ／ｃｍ2（ゲージ圧
力）以下に降下せしめるため、熱交換器３１に連結され
ている冷媒導入管３２を別途設けてある液体窒素貯槽に
連結して弁３４を開き、液体窒素を弁３４、逆止弁３３
を介して冷媒導入管３２により熱交換器３１に導入し
た。そして、断熱貯層１の上部気層空間部Ｓを冷却せし
めて、冷媒導出管３５より保圧弁を３６を介して外部に
導出して回収するようにして液体窒素を熱交換器３１に
約３ｋgｆ／ｃｍ2（ゲージ圧力）の圧力で流通せしめ
た。Then, the pressure of the heat-insulating storage tank 1 for transportation is 8 kg.
In order to lower f / cm 2 (gauge pressure) to below 6 kgf / cm 2 (gauge pressure) of the large adiabatic storage tank of the low-temperature liquefied gas manufacturing plant, the refrigerant introduction pipe 32 connected to the heat exchanger 31 is connected. The valve 34 is opened by connecting to a separately provided liquid nitrogen storage tank, and the liquid nitrogen is supplied to the valve 34 and the check valve 33.
And introduced into the heat exchanger 31 through the refrigerant introduction pipe 32. Then, the upper gas layer space S of the heat-insulating reservoir 1 is cooled, and the liquid nitrogen is led out of the refrigerant outlet pipe 35 via the pressure-holding valve 36 to be recovered, so that about 3 kgf of liquid nitrogen is supplied to the heat exchanger 31. / Cm 2 (gauge pressure).
【００３５】その結果、約３０リットルの液体窒素を熱
交換器３１に流通せしめることにより、約４５分の時間
で、輸送用の断熱貯槽１の圧力を、８ｋgｆ／ｃｍ2（ゲ
ージ圧力）から５.５ｋgｆ／ｃｍ2（ゲージ圧力）の圧
力に降下せしめることができ、断熱貯槽１内の高価な気
体アルゴンを無駄に大気に放出することなく回収すると
共に、短時間で断熱貯槽１内の圧力を所望する低い圧力
に降圧することが出来た。そして、引き続き手際良く、
払出し圧力６ｋgｆ／ｃｍ2（ゲージ圧力）の低温液化ガ
ス製造工場の大型断熱貯槽より輸送用の断熱貯槽１に液
体アルゴンを送液し得て充填することができた。このよ
うにして、タンクローリー車に搭載された輸送用の断熱
貯槽装置３０の断熱貯槽１に充填された液体アルゴンは
別の使用先工場に運ばれ、当該工場の断熱貯槽タンク
に、前記した如き蒸発器による加圧操作をして液体アル
ゴンを送液移充填した。As a result, about 30 liters of liquid nitrogen are allowed to flow through the heat exchanger 31, so that the pressure in the heat-insulating storage tank 1 for transportation can be reduced from 8 kgf / cm 2 (gauge pressure) to about 5 minutes in about 45 minutes. 0.5 kgf / cm 2 (gauge pressure), it is possible to collect the expensive gaseous argon in the insulated storage tank 1 without wasting it to the atmosphere, and to reduce the pressure in the insulated storage tank 1 in a short time. The pressure could be reduced to the desired low pressure. And continue to be skillful,
Liquid argon could be sent from the large insulated storage tank of the low-temperature liquefied gas manufacturing plant with a dispensing pressure of 6 kgf / cm 2 (gauge pressure) to the insulated storage tank 1 for transport, and could be filled. In this way, the liquid argon filled in the heat-insulating storage tank 1 of the heat-insulating storage tank device 30 for transportation mounted on the tank truck is transported to another factory where it is used, and is evaporated into the heat-insulating storage tank of the factory as described above. The liquid was transferred and filled with liquid argon by a pressurizing operation using a vessel.
【００３６】上記実施例では、タンクローリー車で低温
液化ガスを該低温液化ガス製造工場の大型断熱貯槽から
使用先工場の断熱貯槽タンクに輸送運搬する場合の輸送
用の断熱貯槽１内の圧力上昇の対応について説明した。
又、このほかの例として、休日等の輸送運搬を長期にわ
たって休業して、外部からの侵入熱により断熱貯槽１内
に貯液してある低温液化ガスが気化して、これにより断
熱貯槽１内の圧力が上昇した場合にも、熱交換器３１を
有効に活用して、同様に高価な気体を大気に放出するこ
となく有効に液化回収して、断熱貯槽１内の圧力を所望
する低い圧力に降下せしめることができる。In the above-described embodiment, when the low-temperature liquefied gas is transported from the large-sized insulated storage tank of the low-temperature liquefied gas manufacturing plant to the insulated storage tank of the factory where the low-temperature liquefied gas is manufactured by a tank truck, the pressure rise in the insulated storage tank 1 for transportation is reduced. The correspondence was explained.
Further, as another example, transportation and transportation such as holidays are closed for a long time, and low-temperature liquefied gas stored in the adiabatic storage tank 1 is vaporized due to heat entering from the outside, whereby the adiabatic storage tank 1 When the pressure rises, the heat exchanger 31 is effectively used to effectively liquefy and recover similarly expensive gas without releasing it to the atmosphere. Can be lowered.
【００３７】本発明の低温液化ガスの輸送用断熱貯槽装
置３０は以上のように実施されるが、上記実施例では、
輸送する低温液化ガスＬとして液体アルゴンを例示して
説明したが、本発明の低温液化ガスの輸送用断熱貯槽装
置３０は液体アルゴンの運搬輸送のみの使用に限定され
るもので無く、如何なる低温液化ガスの輸送運搬に用い
ることができるのは勿論である。そして、この場合、内
槽３内に配した熱交換器３１に流す冷媒は、この断熱貯
槽装置３０で輸送運搬される低温液化ガスＬによって、
その低温液化ガスＬの沸点より低い沸点を有する低温液
化ガスを冷媒として適宜選択して使用すれば良い。The adiabatic storage tank device 30 for transporting low-temperature liquefied gas of the present invention is implemented as described above.
Although the description has been given by exemplifying liquid argon as the low-temperature liquefied gas L to be transported, the adiabatic storage tank device 30 for transporting low-temperature liquefied gas of the present invention is not limited to the use of only the transportation and transportation of liquid argon. Of course, it can be used for transporting gas. In this case, the refrigerant flowing through the heat exchanger 31 disposed in the inner tank 3 is cooled by the low-temperature liquefied gas L transported and transported by the adiabatic storage tank device 30.
A low-temperature liquefied gas having a boiling point lower than that of the low-temperature liquefied gas L may be appropriately selected and used as a refrigerant.
【００３８】又、内槽３内に配設した熱交換器３１とし
て、上記実施例ではステンレス鋼製の管を使用した例を
例示したが、本発明はこれに限定されるもので無く、よ
り熱交換効率を高めて熱交換させるために、熱交換器３
１の配管をアルミニウム製にしたり、配管にフィンを付
設せしめたりするともできる。又、内槽３内に配する熱
交換器３１のみを熱伝導率の良いアルミニウム製とし
て、これに連設する導入・出管３２、３５を熱伝導率の
低いステンレス鋼とすると、これに流通せしめる冷媒の
冷熱をより一層効率良く使用することができる。なお
又、本発明の輸送用の断熱貯槽装置３０では、断熱貯槽
１より使用先工場の断熱貯槽タンクに低温液化ガスを送
液する加圧手段として、前記実施例では加圧用の蒸発器
１４を使用した例を説明したが、これに代えて導出管１
０に加圧送液ポンプを配設した断熱貯槽装置３０であっ
ても、断熱貯槽１内の圧力が上昇した場合に、これを降
圧せしめるのに同様に有効に活用し得るものである。Further, in the above embodiment, an example in which a stainless steel tube is used as the heat exchanger 31 disposed in the inner tank 3 has been described, but the present invention is not limited to this. In order to increase the heat exchange efficiency and perform heat exchange, heat exchanger 3
The first pipe may be made of aluminum or the pipe may be provided with fins. If only the heat exchanger 31 disposed in the inner tank 3 is made of aluminum having a high heat conductivity, and the inlet / outlet pipes 32 and 35 connected to the heat exchanger 31 are made of stainless steel having a low heat conductivity, the heat exchanger 31 flows through the inside. It is possible to use the cold heat of the cooling medium more efficiently. In the adiabatic storage tank device 30 for transportation according to the present invention, the evaporator 14 for pressurization is used as the pressurizing means for sending the low-temperature liquefied gas from the adiabatic storage tank 1 to the adiabatic storage tank at the factory in which it is used. The example used was described, but instead, the outlet pipe 1 was used.
Even when the pressure in the heat insulating storage tank 1 is increased, the heat insulating storage device 30 having the pressurized liquid sending pump disposed at 0 can be effectively used to lower the pressure.
【００３９】[0039]
【発明の効果】本発明の低温液化ガス輸送用断熱貯槽装
置は以上のような形態で実施され、以下の如き効果を奏
する。即ち、本発明のタンクローリー車に搭載して使用
する、低温液化ガス輸送用の断熱貯槽装置は、低温液化
ガスを貯液する断熱貯槽の内槽内の気層空間部に冷媒を
流通せしめる熱交換器を配設したので、断熱貯槽内に貯
液してある低温液化ガスより沸点の低い冷媒を熱交換器
に流通せしめることにより、断熱貯槽内の圧力が上昇し
ても、高価な低温液化ガスが気化して断熱貯槽の内槽内
に滞留する気体を、前記熱交換器で冷却して再液化して
回収すると共に、断熱貯槽内の圧力を降下せしめること
ができる。The adiabatic storage tank apparatus for transporting low-temperature liquefied gas of the present invention is embodied as described above, and has the following effects. That is, the heat-insulating storage tank device for transporting low-temperature liquefied gas used by being mounted on the tank truck of the present invention is a heat-exchanger that allows the refrigerant to flow through the gas space in the inner tank of the heat-insulated storage tank that stores the low-temperature liquefied gas. By distributing a refrigerant having a lower boiling point than the low-temperature liquefied gas stored in the heat-insulated storage tank to the heat exchanger, even if the pressure in the heat-insulated storage tank rises, expensive low-temperature liquefied gas The gas which is vaporized and stays in the inner tank of the heat insulating storage tank can be cooled by the heat exchanger to be reliquefied and recovered, and the pressure in the heat insulating storage tank can be reduced.
【００４０】従って、高価な低温液化ガスを大気に放出
することなく、断熱貯槽内の圧力を容易に所望する低い
圧力に降下せしめることが出来るので、低温液化ガスの
損失が低減されて輸送効率を向上せしめるばかりか、圧
力の調整操作が容易となって、低温液化ガスの移充填作
業効率が向上すると共に低温液化ガスの輸送運行効率を
高めることが可能となる。Therefore, the pressure in the adiabatic storage tank can be easily reduced to a desired low pressure without releasing expensive low-temperature liquefied gas to the atmosphere, so that the loss of the low-temperature liquefied gas is reduced and the transportation efficiency is reduced. In addition to the improvement, the pressure adjustment operation is facilitated, so that the efficiency of the low-temperature liquefied gas transfer and filling operation is improved, and the transport operation efficiency of the low-temperature liquefied gas can be increased.
【図１】 本発明の低温液化ガス輸送用断熱貯槽装置の
一例を説明する構成系統概略図である。FIG. 1 is a schematic structural diagram illustrating an example of an adiabatic storage tank device for transporting low-temperature liquefied gas of the present invention.
【図２】 従来の低温液化ガス輸送用断熱貯槽装置の一
例を説明する構成系統概略図である。FIG. 2 is a schematic configuration diagram illustrating an example of a conventional adiabatic storage tank device for transporting low-temperature liquefied gas.
３０…本発明の低温液化ガス輸送用断熱貯槽装置、 １
…断熱貯槽、２…外槽、 ３…内槽、 ４…断熱層、
５…安全板、 ６…導入管、７…シャワー状噴出管、
９…導出入主管、 １０…導出管、１２…加圧用抽出
管、 １４…蒸発器、 １６…加圧気体導入管、１７…
放出管、 ２２…液面計、 ２３…圧力計、 ２５…過
充填防止配管、８、１１、１３、１５、１８、２４…
弁、 ２６…安全弁、 Ｖ…出入弁、Ｓ…気層空間部、
Ｐ…加圧送液ポンプ、 Ｌ…低温液化ガス、３１…熱
交換器、 ３２…冷媒導入管、 ３３…逆止弁、 ３４
…開閉弁、３５…冷媒導出管、 ３６…保圧弁、 ３７
‥圧力計30 ... Insulated storage tank device for transporting low-temperature liquefied gas of the present invention, 1
... Insulated storage tank, 2 ... Outer tank, 3 ... Inner tank, 4 ... Insulation layer,
5 safety plate, 6 introduction pipe, 7 shower-shaped ejection pipe,
9 ... lead-in / out pipe, 10 ... lead-out pipe, 12 ... pressurizing extraction pipe, 14 ... evaporator, 16 ... pressurized gas inlet pipe, 17 ...
Discharge pipe, 22: liquid level gauge, 23: pressure gauge, 25: overfilling prevention pipe, 8, 11, 13, 15, 18, 24 ...
Valve, 26: Safety valve, V: In / out valve, S: Gas layer space,
P: Pressurized liquid sending pump, L: Low temperature liquefied gas, 31: Heat exchanger, 32: Refrigerant introduction pipe, 33: Check valve, 34
... on-off valve, 35 ... refrigerant outlet pipe, 36 ... pressure-holding valve, 37
‥ Pressure gauge
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 伸之 東京都港区西新橋一丁目16番７号 日本酸 素株式会社内 (72)発明者 石川 直良 神奈川県横浜市鶴見区矢向１−15−１ 日 酸工業株式会社内 Ｆターム(参考） 3E073 AA01 AB01 CA01 CA03 CB04 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuyuki Takahashi 1-16-7 Nishi-Shimbashi, Minato-ku, Tokyo Inside Nippon Oxide Co., Ltd. 1 day F-term in Acid Industry Co., Ltd. (reference) 3E073 AA01 AB01 CA01 CA03 CB04
Claims (4)
て、送液するための加圧手段を具備してなる断熱貯槽装
置であって、断熱貯槽の内槽内の上方気層空間部に位置
して冷却用冷媒を流通せしめる管よりなる熱交換器を配
し、その管端が槽璧を気密に貫通して槽外に延びて配設
されてなることを特徴とする低温液化ガス輸送用断熱貯
槽装置。1. An adiabatic storage device comprising a pressurizing means for storing a low-temperature liquefied gas, transporting the liquefied gas to a use destination, and sending the liquid, wherein an upper gas layer space in an inner tank of the adiabatic storage tank is provided. Low-temperature liquefaction characterized in that a heat exchanger consisting of a tube through which a cooling refrigerant flows is disposed in a portion, and a pipe end of the heat exchanger extends airtightly through a tank wall and extends outside the tank. Insulated storage tank device for gas transport.
端はステンレス鋼でなる配管が連結されてなることを特
徴とする請求項１に記載の低温液化ガス輸送用断熱貯槽
装置。2. The adiabatic storage device for transporting low-temperature liquefied gas according to claim 1, wherein the heat exchanger is made of aluminum, and a pipe end thereof is connected to a pipe made of stainless steel.
る液化ガスを気化してこれを貯槽の内槽内に送気する蒸
発器であることを特徴とする請求項１又は請求項２に記
載の低温液化ガス輸送用断熱貯槽装置。3. The evaporator according to claim 1, wherein said pressurizing means is an evaporator for vaporizing a stored liquefied gas and feeding the vaporized gas into an inner tank of the storage tank. Item 3. An insulated storage tank device for transporting low-temperature liquefied gas according to item 2.
てなる加圧送液ポンプであることを特徴とする請求項１
又は請求項２に記載の低温液化ガス輸送用断熱貯槽装
置。4. The pump according to claim 1, wherein the pressurizing means provided is a pressurized liquid sending pump communicating with the inside of the inner tank.
Or the heat insulation storage tank device for low temperature liquefied gas transportation according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11072744A JP2000266292A (en) | 1999-03-17 | 1999-03-17 | Heat insulating storage tank device for transporting low temperature liquefied gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11072744A JP2000266292A (en) | 1999-03-17 | 1999-03-17 | Heat insulating storage tank device for transporting low temperature liquefied gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000266292A true JP2000266292A (en) | 2000-09-26 |
Family
ID=13498186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11072744A Pending JP2000266292A (en) | 1999-03-17 | 1999-03-17 | Heat insulating storage tank device for transporting low temperature liquefied gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000266292A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101075195B1 (en) | 2011-05-04 | 2011-10-19 | 정우이앤이 주식회사 | Reservoir tank including heat exchanger and liquefied natural gas fuel supplying system including the reservoir tank |
| WO2014121579A1 (en) * | 2013-02-05 | 2014-08-14 | 石家庄安瑞科气体机械有限公司 | Efficient and energy-saving vertical low-temperature storage tank |
| CN105972901A (en) * | 2016-02-27 | 2016-09-28 | 中国科学院理化技术研究所 | Cryogenic cooling box |
| CN110081303A (en) * | 2019-05-17 | 2019-08-02 | 中国科学院理化技术研究所 | A kind of liquefied gas storage device |
-
1999
- 1999-03-17 JP JP11072744A patent/JP2000266292A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101075195B1 (en) | 2011-05-04 | 2011-10-19 | 정우이앤이 주식회사 | Reservoir tank including heat exchanger and liquefied natural gas fuel supplying system including the reservoir tank |
| WO2012150732A1 (en) * | 2011-05-04 | 2012-11-08 | 정우이앤이 주식회사 | Storage tank having heat exchanger and natural gas fuel supply system having the storage tank |
| WO2014121579A1 (en) * | 2013-02-05 | 2014-08-14 | 石家庄安瑞科气体机械有限公司 | Efficient and energy-saving vertical low-temperature storage tank |
| US9638373B2 (en) | 2013-02-05 | 2017-05-02 | Shijiazhuang Enric Gas Equipment Co., Ltd | Energy efficient vertical cryogenic tank |
| CN105972901A (en) * | 2016-02-27 | 2016-09-28 | 中国科学院理化技术研究所 | Cryogenic cooling box |
| CN110081303A (en) * | 2019-05-17 | 2019-08-02 | 中国科学院理化技术研究所 | A kind of liquefied gas storage device |
| CN110081303B (en) * | 2019-05-17 | 2024-04-19 | 中国科学院理化技术研究所 | Liquefied gas storage device |
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