JPH11236999A - Device for controlling separation of gas inside of liquefied gas supplying tube for liquefied gas storage tank - Google Patents

Device for controlling separation of gas inside of liquefied gas supplying tube for liquefied gas storage tank

Info

Publication number
JPH11236999A
JPH11236999A JP4014098A JP4014098A JPH11236999A JP H11236999 A JPH11236999 A JP H11236999A JP 4014098 A JP4014098 A JP 4014098A JP 4014098 A JP4014098 A JP 4014098A JP H11236999 A JPH11236999 A JP H11236999A
Authority
JP
Japan
Prior art keywords
gas
storage tank
pipe
liquefied gas
liquefied
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.)
Granted
Application number
JP4014098A
Other languages
Japanese (ja)
Other versions
JP3430903B2 (en
Inventor
Shingo Takao
信吾 高雄
Katsuki Sonoda
克樹 園田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP04014098A priority Critical patent/JP3430903B2/en
Publication of JPH11236999A publication Critical patent/JPH11236999A/en
Application granted granted Critical
Publication of JP3430903B2 publication Critical patent/JP3430903B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent sudden increase in evaporation of the liquefied gas in a storage tank while controlling separation of the evaporative gas entrained in the liquefied gas flowing in a supplying tube by entraining the evaporative gas generated in the storage tank in the liquefied gas supplying tube, and discharging it into the storage tank. SOLUTION: A discharge pipe 3b provided in a lower end of a funnel tube 3 for supplying the liquid gas into a liquefied gas storage tank 1 is provided with a gas separating part 10 for separating the evaporative gas entrained in the liquefied gas flowing in the funnel tube 3, and a conduct 11 connected to a low-pressure evaporative gas pipeline 12 is connected to the gas separation part 10. The evaporative gas entrained in the liquefied gas is separated in the gas separation part 10, and discharged to the evaporative gas pipeline 12 through the conduct 11.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、LNG等の液化
ガス受入れ基地等において、液化ガスを貯蔵する貯槽内
に、受入れ管およびロート管を通し液化ガスを受け入れ
る際に、管内を流れる液化ガス中に巻き込まれた蒸発ガ
スを分離するための、液化ガス貯槽における液化ガス供
給管中のガス分離制御装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquefied gas flowing through a pipe when a liquefied gas is received through a receiving pipe and a funnel pipe into a storage tank for storing the liquefied gas at a liquefied gas receiving base such as LNG. The present invention relates to a gas separation control device in a liquefied gas supply pipe in a liquefied gas storage tank for separating evaporative gas caught in a gas tank.

【0002】[0002]

【従来の技術】運搬船によって運ばれたLNG等の液化
ガスは、貯蔵基地に設置された貯槽内に移され貯蔵され
る。図2は、従来の液化ガス貯槽の一例を示す概略垂直
断面図である。図2に示すように、LNG等の液化ガス
を貯蔵する貯槽1には、貯槽1内に液化ガスを受け入れ
るための受入れ管2およびロート管3、貯槽1内から液
化ガスを排出するための払出し管4、および、貯槽1内
で発生した蒸発ガス(BOG)を貯槽1から排出するた
めのガス排出管5が設けられている。
2. Description of the Related Art A liquefied gas such as LNG carried by a carrier is transferred and stored in a storage tank installed at a storage base. FIG. 2 is a schematic vertical sectional view showing an example of a conventional liquefied gas storage tank. As shown in FIG. 2, a storage tank 1 for storing a liquefied gas such as LNG is provided with a receiving pipe 2 for receiving the liquefied gas into the storage tank 1, a funnel 3, and a discharge for discharging the liquefied gas from the storage tank 1. A pipe 4 and a gas discharge pipe 5 for discharging evaporative gas (BOG) generated in the storage tank 1 from the storage tank 1 are provided.

【0003】払出し管4には、貯槽1内の液化ガスを循
環混合するための循環用導管8が接続されており、循環
用導管8の下端には、噴流混合用ノズル9が取り付けら
れている。払出し管4の下端にはポンプ6が設けられ、
払出し管4および循環用導管8には、バルブ7,7′が
取り付けられている。
[0005] A circulation pipe 8 for circulating and mixing the liquefied gas in the storage tank 1 is connected to the discharge pipe 4, and a jet mixing nozzle 9 is attached to a lower end of the circulation pipe 8. . A pump 6 is provided at the lower end of the dispensing pipe 4,
The discharge pipe 4 and the circulation pipe 8 are provided with valves 7, 7 '.

【0004】運搬船によって貯蔵基地に運ばれた液化ガ
スは、受入れ管2およびロート管3を通って、貯槽1内
に受入れられ貯蔵される。そして、貯槽1内の液化ガス
は、払出し管4を通って払い出される。また、バルブ
7、7′の開閉により、貯槽1内の液化ガスは、払出し
管4および循環用導管8内を循環し混合される。貯槽1
内で発生した蒸発ガス(BOG)は、ガス排出管5を通
って貯槽1内から排出される。
[0004] The liquefied gas carried by the carrier to the storage base passes through the receiving pipe 2 and the funnel pipe 3 and is received and stored in the storage tank 1. Then, the liquefied gas in the storage tank 1 is discharged through the discharge pipe 4. By opening and closing the valves 7 and 7 ', the liquefied gas in the storage tank 1 is circulated and mixed in the discharge pipe 4 and the circulation pipe 8. Storage tank 1
The evaporative gas (BOG) generated inside is discharged from the storage tank 1 through the gas discharge pipe 5.

【0005】[0005]

【発明が解決しようとする課題】上述した貯槽1内に液
化ガスを受け入れるに際し、ロート管3内を流れる液化
ガス中に、貯槽1内において発生した蒸発ガス(BO
G)が、ロート管3の上端開口からロート管内に巻き込
まれ、ロート管下端に設けられた水平な排出管3aの排
出口3bから、液化ガスと共に貯槽1内に放出される。
その結果、ロート管下端の排出口3bから放出された、
蒸発ガスを含む液化ガスは、貯槽1内の液化ガス液面に
上昇して液面を激しく攪乱する。LNG運搬船内におけ
る液化ガスの飽和蒸気圧は、貯槽1内の圧力よりも高い
ので、激しく攪乱されている液面に達することによっ
て、蒸発ガスの発生が促進される。
When the liquefied gas is received in the storage tank 1, the vaporized gas (BO) generated in the storage tank 1 is introduced into the liquefied gas flowing through the funnel 3.
G) is drawn into the funnel from the upper end opening of the funnel 3 and is discharged into the storage tank 1 together with the liquefied gas from the outlet 3b of the horizontal discharge pipe 3a provided at the lower end of the funnel.
As a result, discharged from the outlet 3b at the lower end of the funnel,
The liquefied gas containing the evaporating gas rises to the liquefied gas liquid level in the storage tank 1 and violently disturbs the liquid level. Since the saturated vapor pressure of the liquefied gas in the LNG carrier is higher than the pressure in the storage tank 1, reaching the liquid surface that is violently disturbed promotes the generation of evaporative gas.

【0006】その結果、図4に示すように、貯槽1内に
おける液化ガスの蒸発量は、液化ガスの受入れ開始直後
に急増して貯槽1内の圧力が急激に高くなる。そのため
に、ガス排出管5を通して貯槽1内から蒸発ガスを吸引
し貯槽1外に排出するための、ガス排出管5に接続され
た図示しないコンプレッサを、一時的に余分に駆動する
必要が生じ、電力負荷が増加する。
As a result, as shown in FIG. 4, the amount of evaporation of the liquefied gas in the storage tank 1 rapidly increases immediately after the start of receiving the liquefied gas, and the pressure in the storage tank 1 rapidly increases. For this reason, it is necessary to temporarily and extra drive a compressor (not shown) connected to the gas discharge pipe 5 for sucking the evaporative gas from the storage tank 1 through the gas discharge pipe 5 and discharging the vapor gas to the outside of the storage tank 1. The power load increases.

【0007】ロート管3の上端開口からの蒸発ガスの巻
き込みを防止することは、構造上困難であり、従来の液
化ガス貯槽に設けられた受入れ管およびロート管では、
蒸発ガスの巻き込み量を制御することはできない。
[0007] It is structurally difficult to prevent the evaporative gas from being trapped from the upper end opening of the funnel tube 3, and in the conventional receiving tube and funnel provided in the liquefied gas storage tank,
It is not possible to control the amount of evaporative gas involved.

【0008】従って、この発明は、上述した問題を解決
し、液化ガス貯槽に液化ガスを受け入れる際に、貯槽内
において発生した蒸発ガスが、液化ガス供給管内に巻き
込まれ、貯槽内の液化ガス中に放出されることにより、
貯槽内において液化ガス蒸発量が急増するようなことが
なく、供給管内を流れる液化ガス中に巻き込まれた蒸発
ガスを分離制御することができる、液化ガス貯槽におけ
る液化ガス供給管中のガス分離制御装置を提供すること
にある。
Therefore, the present invention solves the above-mentioned problem, and when the liquefied gas is received in the liquefied gas storage tank, the evaporative gas generated in the storage tank is caught in the liquefied gas supply pipe, and the liquefied gas in the storage tank By being released to
Gas separation control in the liquefied gas supply pipe in the liquefied gas storage tank, which can control the separation of the evaporative gas caught in the liquefied gas flowing in the supply pipe without the liquefied gas evaporation amount increasing suddenly in the storage tank It is to provide a device.

【0009】[0009]

【課題を解決するための手段】請求項1に記載の発明
は、液化ガス貯槽内に設けられた、前記貯槽内に受入れ
管を通して液化ガスを供給するためのロート管の下端の
液化ガス排出管に、前記ロート管内を流れる液化ガス中
に巻き込まれた蒸発ガスを分離するための、前記排出管
よりも大径の環状溝からなるガス分離部が設けられ、前
記ガス分離部には、低圧の蒸発ガス配管に連結された導
管が接続されており、液化ガス中に巻き込まれた蒸発ガ
スを前記ガス分離部において分離し、前記導管を通し
て、前記低圧の蒸発ガス配管中に排出することにより、
前記貯槽内における蒸発ガスの発生量を制御・抑制し、
または、その急激な増加を調節することに特徴を有する
ものである。
According to a first aspect of the present invention, there is provided a liquefied gas discharge pipe at a lower end of a funnel provided in a liquefied gas storage tank for supplying liquefied gas through a receiving pipe in the storage tank. In order to separate the evaporative gas entrapped in the liquefied gas flowing in the funnel, a gas separating portion having an annular groove having a diameter larger than that of the discharge tube is provided, and the gas separating portion has a low pressure. A conduit connected to the evaporative gas pipe is connected, the evaporative gas caught in the liquefied gas is separated in the gas separation unit, and is discharged through the conduit into the low-pressure evaporative gas pipe.
Controlling and suppressing the amount of evaporative gas generated in the storage tank,
Alternatively, the method is characterized by adjusting the rapid increase.

【0010】請求項2に記載の発明は、前記ガス分離部
に接続され、低圧の蒸発ガス配管に連結された導管は、
更に、分岐管によって高圧の蒸発ガス配管に接続され、
そして、前記低圧の蒸発ガス配管に連結された導管には
ガス吸入弁が取付けられ、前記高圧の蒸発ガス配管に連
結された分岐管にはガス注入弁が取付けられており、ガ
ス吸入弁およびガス注入弁の開閉により、前記ガス分離
部における液化ガス中からの蒸発ガスの分離、排出を行
い、また、前記高圧の蒸発ガス配管からの蒸発ガスを貯
槽内に放出し、貯槽内の液化ガスを攪拌することによ
り、蒸発ガスの発生を促進することに特徴を有するもの
である。
According to a second aspect of the present invention, the conduit connected to the gas separation unit and connected to the low-pressure evaporative gas pipe is:
Furthermore, it is connected to a high pressure evaporative gas pipe by a branch pipe,
A gas intake valve is attached to a conduit connected to the low-pressure evaporative gas pipe, and a gas injection valve is attached to a branch pipe connected to the high-pressure evaporative gas pipe. The opening and closing of the injection valve separates and discharges the evaporative gas from the liquefied gas in the gas separation unit, and also discharges the evaporative gas from the high-pressure evaporative gas pipe into the storage tank, and discharges the liquefied gas in the storage tank. It is characterized in that generation of evaporative gas is promoted by stirring.

【0011】[0011]

【発明の実施の形態】次に、この発明を図面を参照しな
がら説明する。図1は、この発明の装置の一実施態様を
示す概略垂直断面図である。図面に示すように、液化ガ
ス貯槽1には、貯槽1内に液化ガスを受け入れるための
受入れ管2およびロート管3、貯槽1内から液化ガスを
排出するための払出し管4、および、貯槽1内の蒸発ガ
ス(BOG)を排出するためのガス排出管12が設けら
れ、払出し管4には、バルブ7′を介して液化ガス循環
用導管8が接続され、循環用導管8の下端には、噴流混
合用ノズル9が取り付けられ、そして、払出し管4の下
端には、ポンプ6が設置されていることは従来の装置と
同様である。
Next, the present invention will be described with reference to the drawings. FIG. 1 is a schematic vertical sectional view showing one embodiment of the device of the present invention. As shown in the drawing, the liquefied gas storage tank 1 has a receiving pipe 2 and a funnel pipe 3 for receiving the liquefied gas into the storage tank 1, a discharge pipe 4 for discharging the liquefied gas from the storage tank 1, and the storage tank 1. A gas discharge pipe 12 for discharging evaporative gas (BOG) in the inside is provided, and a liquefied gas circulation pipe 8 is connected to the discharge pipe 4 via a valve 7 ′. A jet mixing nozzle 9 is attached, and a pump 6 is provided at the lower end of the discharge pipe 4 as in the conventional apparatus.

【0012】この発明の装置においては、ロート管3の
下端に接続された水平な排出管3aの排出口3b、3b
に近い位置に、排出管3aの周方向に、排出管3aより
も大径の環状溝からなるガス分離部10、10が設けら
れている。
In the apparatus of the present invention, the discharge ports 3b, 3b of the horizontal discharge pipe 3a connected to the lower end of the funnel 3
The gas separation units 10 and 10 each having an annular groove having a diameter larger than that of the discharge pipe 3a are provided in the circumferential direction of the discharge pipe 3a at a position close to.

【0013】環状ガス分離部10、10には、低圧の蒸
発ガス配管12に連結する導管11が接続されており、
また、導管11の分岐管11′は、高圧の蒸発ガス配管
13に接続されている。上記低圧の蒸発ガス配管12に
連結する導管11にはガス吸入弁14が取り付けられ、
上記高圧の蒸発ガス配管13に連結する分岐管11′に
は、ガス注入弁15が取り付けられている。
A conduit 11 connected to a low-pressure evaporative gas pipe 12 is connected to the annular gas separation units 10 and 10.
The branch pipe 11 ′ of the conduit 11 is connected to a high-pressure evaporative gas pipe 13. A gas suction valve 14 is attached to a conduit 11 connected to the low-pressure evaporative gas pipe 12,
A gas injection valve 15 is attached to a branch pipe 11 ′ connected to the high-pressure evaporation gas pipe 13.

【0014】高圧の蒸発ガス配管13に連結する分岐管
11′に取り付けられたガス注入弁15を閉とし、低圧
の蒸発ガス配管12に連結する導管11に取り付けられ
たガス吸入弁14を開にする。これによって、ロート管
3内を流れる液化ガス中に巻き込まれた蒸発ガスは、ロ
ート管下端の排出管3aにその周方向に設けられた大径
の環状溝からなるガス分離部10、10において、液化
ガスから分離され、ガス分離部10、10に接続された
導管11を通って、これに接続された低圧の蒸発ガス配
管12に排出される。
The gas injection valve 15 attached to the branch pipe 11 'connected to the high pressure evaporative gas pipe 13 is closed, and the gas inlet valve 14 attached to the conduit 11 connected to the low pressure evaporative gas pipe 12 is opened. I do. As a result, the evaporative gas caught in the liquefied gas flowing through the funnel 3 is removed by the gas separation units 10 and 10 formed of large-diameter annular grooves provided in the discharge tube 3a at the lower end of the funnel 3 in the circumferential direction. The liquefied gas is separated from the liquefied gas, passed through a conduit 11 connected to the gas separation units 10, 10, and discharged to a low-pressure evaporative gas pipe 12 connected thereto.

【0015】従って、ロート管3内を流れる液化ガス中
に巻き込まれた蒸発ガスによる、貯槽1の液面の攪乱は
抑制され、貯槽1内における蒸発ガスの発生量は減少
し、図3に示すように、貯槽1内における液化ガスの蒸
発量が、液化ガスの受入れ開始直後に一時的に急増する
ことがなくなる。従って、貯槽1内から蒸発ガスを吸引
し貯槽1外に排出するための、ガス排出管5に接続され
たコンプレッサに余分な駆動による電力負荷の増加が生
ずるようなことはなくなる。
Accordingly, the disturbance of the liquid level in the storage tank 1 due to the evaporative gas trapped in the liquefied gas flowing through the funnel 3 is suppressed, and the amount of evaporative gas generated in the storage tank 1 is reduced, as shown in FIG. As described above, the amount of evaporation of the liquefied gas in the storage tank 1 does not temporarily increase immediately after the start of receiving the liquefied gas. Therefore, an increase in power load due to extra driving of the compressor connected to the gas discharge pipe 5 for sucking the evaporative gas from the storage tank 1 and discharging the gas to the outside of the storage tank 1 does not occur.

【0016】一方、貯槽1内における蒸発ガスの発生量
が、何らかの原因で減少した場合には、低圧の蒸発ガス
配管12に接続された導管11のガス吸入弁14を閉と
し、そして、高圧の蒸発ガス配管13に接続された分岐
管11′のガス注入弁15を開とすることによって、高
圧の蒸発ガス配管13からの蒸発ガスを、分岐管11′
および導管11を通って、ロート管3の下端に接続され
た排出管3aの排出口3bから、貯槽1内の液化ガス中
に放出させる。
On the other hand, when the amount of evaporative gas generated in the storage tank 1 decreases for some reason, the gas suction valve 14 of the conduit 11 connected to the low-pressure evaporative gas pipe 12 is closed, and By opening the gas injection valve 15 of the branch pipe 11 'connected to the evaporative gas pipe 13, the evaporative gas from the high-pressure evaporative gas pipe 13 is supplied to the branch pipe 11'.
Then, the gas is discharged into the liquefied gas in the storage tank 1 from the discharge port 3b of the discharge pipe 3a connected to the lower end of the funnel pipe 3 through the conduit 11.

【0017】その結果、貯槽1内の液化ガスは攪拌され
て液面が攪乱され、蒸発ガスの発生量は増加する。従っ
て、何らかの状況により、貯槽1内における蒸発ガスの
発生量が減少し、貯槽1内の液化ガスが急減するような
場合には、貯槽1内が負圧にならないように蒸発ガスの
発生量を制御することができる。
As a result, the liquefied gas in the storage tank 1 is agitated and the liquid surface is disturbed, and the amount of evaporative gas generated increases. Therefore, when the amount of evaporative gas generated in the storage tank 1 decreases due to some situation and the amount of liquefied gas in the storage tank 1 rapidly decreases, the amount of evaporative gas generated is controlled so that the pressure in the storage tank 1 does not become negative. Can be controlled.

【0018】この発明において、上述した、高圧の蒸発
ガス配管13、及び、これに接続されたガス注入弁15
を有する分岐管11′による、高圧の蒸発ガス配管13
からの蒸発ガスの貯槽1内への放出は、必ずしも必要と
するものではなく、ロート管3内を流れる液化ガス中に
巻き込まれた蒸発ガスの、ガス分離部10、10におけ
る分離および低圧の蒸発ガス配管12への排出のみを行
うようにしてもよい。
In the present invention, the above-described high-pressure evaporative gas pipe 13 and the gas injection valve 15 connected thereto are connected.
High pressure evaporative gas pipe 13 by branch pipe 11 '
It is not always necessary to release the evaporative gas from the storage tank 1 into the storage tank 1, and the evaporative gas caught in the liquefied gas flowing through the funnel 3 is separated in the gas separation units 10 and 10 and the low-pressure evaporation Only discharge to the gas pipe 12 may be performed.

【0019】上述したように、本発明によれば、ガス吸
入弁14およびガス注入弁15を操作することによっ
て、ロート管3を流れる液化ガス中に巻き込また蒸発ガ
スを、ロート管下部に設けられたガス分離部10、10
において分離し、低圧の蒸発ガス配管12を通して排出
させることができ、または、高圧の蒸発ガス配管13よ
り貯槽1内に蒸発ガスを注入させ、貯槽1内を攪拌する
と共に、蒸発ガスの発生量を増加させることができる。
As described above, according to the present invention, by operating the gas suction valve 14 and the gas injection valve 15, the evaporative gas caught in the liquefied gas flowing through the funnel 3 is provided at the lower part of the funnel. Gas separation units 10, 10
And can be discharged through the low-pressure evaporative gas pipe 12, or the evaporative gas is injected into the storage tank 1 from the high-pressure evaporative gas pipe 13 to stir the storage tank 1 and reduce the amount of evaporative gas generated. Can be increased.

【0020】[0020]

【発明の効果】以上述べたように、本発明によれば、液
化ガス貯槽に液化ガスを受け入れる際に、貯槽内におい
て発生した蒸発ガスがロート管内に巻き込まれ、貯槽内
に放出されることにより、貯槽内における液化ガスの蒸
発ガス量が急増することはなく、貯槽内における蒸発ガ
スの発生量を任意に制御することができる、工業上有用
な効果がもたらされる。
As described above, according to the present invention, when liquefied gas is received in the liquefied gas storage tank, the evaporative gas generated in the storage tank is caught in the funnel and discharged into the storage tank. In addition, the amount of evaporative gas of the liquefied gas in the storage tank does not suddenly increase, and the amount of evaporative gas generated in the storage tank can be arbitrarily controlled.

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

【図1】この発明の装置の一実施態様を示す垂直断面図
である。
FIG. 1 is a vertical sectional view showing an embodiment of the apparatus of the present invention.

【図2】従来の装置の一例を示す垂直断面図である。FIG. 2 is a vertical sectional view showing an example of a conventional device.

【図3】この発明の装置を使用した場合の貯槽内におけ
る液化ガス蒸発量を示すグラフである。
FIG. 3 is a graph showing a liquefied gas evaporation amount in a storage tank when the apparatus of the present invention is used.

【図4】従来の装置を使用した場合の貯槽内における液
化ガス蒸発量を示すグラフである。
FIG. 4 is a graph showing a liquefied gas evaporation amount in a storage tank when a conventional apparatus is used.

【符号の説明】[Explanation of symbols]

1 液化ガス貯槽 2 受入れ管 3 ロート管 4 払出し管 5 ガス排出管 6 ポンプ 7 バルブ 8 循環用導管 9 噴流混合ノズル 10 ガス分離部 11 導管 12 低圧蒸発ガス配管 13 高圧蒸発ガス配管 14 ガス吸入弁 15 ガス注入弁 DESCRIPTION OF SYMBOLS 1 Liquefied gas storage tank 2 Receiving pipe 3 Funnel pipe 4 Discharge pipe 5 Gas discharge pipe 6 Pump 7 Valve 8 Circulation conduit 9 Jet mixing nozzle 10 Gas separation part 11 Conduit 12 Low pressure evaporative gas pipe 13 High pressure evaporative gas pipe 14 Gas inlet valve 15 Gas injection valve

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 液化ガス貯槽内に設けられた、前記貯槽
内に受入れ管を通して液化ガスを供給するためのロート
管の下端の液化ガス排出管に、前記ロート管内を流れる
液化ガス中に巻き込まれた蒸発ガスを分離するための、
前記排出管よりも大径の環状溝からなるガス分離部が設
けられ、前記ガス分離部には、低圧の蒸発ガス配管に連
結された導管が接続されており、 液化ガス中に巻き込まれた蒸発ガスを前記ガス分離部に
おいて分離し、前記導管を通して、前記低圧の蒸発ガス
配管中に排出することにより、前記貯槽内における蒸発
ガスの発生量を制御・抑制し、または、その急激な増加
を調節することを特徴とする、液化ガス貯槽における液
化ガス供給管中のガス分離制御装置。
A liquefied gas flowing through the funnel is entrapped in a liquefied gas discharge pipe provided at a lower end of the funnel provided in the liquefied gas storage tank for supplying the liquefied gas through a receiving pipe into the storage tank. To separate the evaporated gas
A gas separation unit having an annular groove having a diameter larger than that of the discharge pipe is provided. The gas separation unit is connected to a conduit connected to a low-pressure evaporative gas pipe, and the evaporator trapped in the liquefied gas. By separating gas in the gas separation unit and discharging the gas into the low-pressure evaporative gas pipe through the conduit, the amount of evaporative gas generated in the storage tank is controlled or suppressed, or its sudden increase is controlled. A gas separation control device in a liquefied gas supply pipe in a liquefied gas storage tank.
【請求項2】 前記ガス分離部に接続され、低圧の蒸発
ガス配管に連結された前記導管は、更に、分岐管によっ
て高圧の蒸発ガス配管に接続され、そして、前記低圧の
蒸発ガス配管に連結された前記導管にはガス吸入弁が取
付けられ、前記高圧の蒸発ガス配管に連結された前記分
岐管にはガス注入弁が取付けられ、 ガス吸入弁およびガス注入弁の開閉により、前記ガス分
離部における液化ガス中からの蒸発ガスの分離、排出を
行い、また、前記高圧の蒸発ガス配管から蒸発ガスを貯
槽内に放出し、貯槽内の液化ガスを攪拌することによ
り、蒸発ガスの発生を促進する、請求項1に記載の、液
化ガス貯槽における液化ガス供給管中のガス分離制御装
置。
2. The conduit connected to the gas separation unit and connected to a low-pressure evaporative gas pipe is further connected to a high-pressure evaporative gas pipe by a branch pipe and connected to the low-pressure evaporative gas pipe. A gas inlet valve is attached to the conduit, and a gas injection valve is attached to the branch pipe connected to the high-pressure evaporative gas pipe. The gas separation unit is opened and closed by opening and closing the gas intake valve and the gas injection valve. Separation and discharge of the evaporative gas from the liquefied gas at the same time, and the generation of the evaporative gas is promoted by discharging the evaporative gas into the storage tank from the high-pressure evaporative gas pipe and stirring the liquefied gas in the storage tank The gas separation control device in a liquefied gas supply pipe in a liquefied gas storage tank according to claim 1.
JP04014098A 1998-02-23 1998-02-23 Gas separation control device in liquefied gas supply pipe in liquefied gas storage tank Expired - Fee Related JP3430903B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04014098A JP3430903B2 (en) 1998-02-23 1998-02-23 Gas separation control device in liquefied gas supply pipe in liquefied gas storage tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04014098A JP3430903B2 (en) 1998-02-23 1998-02-23 Gas separation control device in liquefied gas supply pipe in liquefied gas storage tank

Publications (2)

Publication Number Publication Date
JPH11236999A true JPH11236999A (en) 1999-08-31
JP3430903B2 JP3430903B2 (en) 2003-07-28

Family

ID=12572481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04014098A Expired - Fee Related JP3430903B2 (en) 1998-02-23 1998-02-23 Gas separation control device in liquefied gas supply pipe in liquefied gas storage tank

Country Status (1)

Country Link
JP (1) JP3430903B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007292180A (en) * 2006-04-25 2007-11-08 Chiyoda Corp Cold insulation circulation system of liquefied gas facility
CN105570665A (en) * 2014-10-10 2016-05-11 南通中集罐式储运设备制造有限公司 Bunkering storage tank system for ship and liquefied natural gas (LNG) bunkering pontoon with storage tank system
CN105674044A (en) * 2015-12-10 2016-06-15 柳州市京阳节能科技研发有限公司 Tank capable of storing biogas safely and efficiently
CN105697999A (en) * 2015-12-10 2016-06-22 柳州市京阳节能科技研发有限公司 Vertical energy-saving and environment-friendly special biogas tank

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007292180A (en) * 2006-04-25 2007-11-08 Chiyoda Corp Cold insulation circulation system of liquefied gas facility
CN105570665A (en) * 2014-10-10 2016-05-11 南通中集罐式储运设备制造有限公司 Bunkering storage tank system for ship and liquefied natural gas (LNG) bunkering pontoon with storage tank system
CN105674044A (en) * 2015-12-10 2016-06-15 柳州市京阳节能科技研发有限公司 Tank capable of storing biogas safely and efficiently
CN105697999A (en) * 2015-12-10 2016-06-22 柳州市京阳节能科技研发有限公司 Vertical energy-saving and environment-friendly special biogas tank

Also Published As

Publication number Publication date
JP3430903B2 (en) 2003-07-28

Similar Documents

Publication Publication Date Title
US9291109B2 (en) Fuel supply system and high-pressure pump for combustion engine
JP2003314378A (en) Evaporation fuel treating equipment
JP2000274324A (en) Device for pressure-feeding liquid fuel into internal combustion engine
US5194075A (en) Evaporative fuel recovery apparatus
US4300919A (en) Apparatus and method for desorption of gas from a liquid
JPH11236999A (en) Device for controlling separation of gas inside of liquefied gas supplying tube for liquefied gas storage tank
US9688375B2 (en) Fuel supply device, fuel supply method and boat propulsion device
CN107084077A (en) Evaporated fuel treating apparatus
AU2010266750B2 (en) Device and method for providing additional head to support a refrigeration liquid feed system
JP2002235608A (en) Evaporated fuel processing device for internal combustion engine
US7293551B2 (en) Liquefied gas-fuel supply device for diesel engine
JP2004076825A (en) Liquefied gas treatment device
US20200232430A1 (en) Fuel supply apparatus for internal combustion engine
JP2000282966A (en) Evaporated fuel processing device of vehicle
JP2002156098A (en) Vent gas treatment method
JP2007292180A (en) Cold insulation circulation system of liquefied gas facility
CN100420844C (en) System for preventing fuel leakage for LPI injector
JPS59219599A (en) Suppression of gas in cryogenic liquidized gas tank
JP2007205231A (en) Evaporated fuel treatment device
JP2014159856A (en) Mixing device of cryogenic liquid in storage tank
JP2000179798A (en) Method for preventing roll-over from being generated inside low-temperature liquefied gas storage tank
US10415510B2 (en) Fuel vapor recovery apparatus
JP2020029846A (en) Ejector system
JP2002256985A (en) Evaporated fuel processing device for internal combustion engine
KR200388780Y1 (en) apparatus for dividing compound into liquid and vapor

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees