JPH067280Y2 - Cooling liquid automatic loading and collecting device for cryogenic liquid carrier - Google Patents
Cooling liquid automatic loading and collecting device for cryogenic liquid carrierInfo
- Publication number
- JPH067280Y2 JPH067280Y2 JP335789U JP335789U JPH067280Y2 JP H067280 Y2 JPH067280 Y2 JP H067280Y2 JP 335789 U JP335789 U JP 335789U JP 335789 U JP335789 U JP 335789U JP H067280 Y2 JPH067280 Y2 JP H067280Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- cooling liquid
- loading
- pipe
- tank
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 ［産業上の利用分野］ この考案は、ＬＮＧ船などの低温液体運搬船にＬＮ２な
どの冷却液を積込むための作業を自動的に行なう積込回
収装置に関し、クールダウンから積込み、管内残液の回
収までを自動的にできるようにしたものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a loading / unloading device for automatically carrying out a work for loading a cooling liquid such as LN 2 on a low temperature liquid carrier such as an LNG carrier. It is designed so that it can automatically carry out the process from down to loading and collecting the residual liquid in the pipe.
［従来の技術］ ＬＮＧ船などの低温液体運搬船にあっては、海上輸送中
の蒸発防止など冷却保持のため輸送液体よりも温度の低
い冷却液、例えば運搬液がＬＮＧの場合には、液体窒素
ＬＮ２などを用いて冷却するようにしている。[Prior Art] In a low-temperature liquid carrier such as an LNG carrier, a cooling liquid having a temperature lower than that of the transport liquid, for example, liquid nitrogen when the transport liquid is LNG, is used to maintain cooling such as evaporation prevention during sea transportation. LN 2 or the like is used for cooling.
このためＬＮＧ受入基地においては、ＬＮＧの陸揚げと
同時に、冷却液であるＬＮ２の積込みを行うようにして
おり、ＬＮＧ船に接続されるローディングアームとＬＮ
２タンクとの間に積込配管が設けられている。For this reason, at the LNG receiving terminal, LN 2 which is the cooling liquid is loaded at the same time as the landing of LNG, and the loading arm and LN connected to the LNG ship are connected.
Loading piping is provided between the two tanks.
この積込配管は、通常、積込み終了後、中の液を抜いて
常温状態とされることが多く、冷却液の積込みに当たっ
ては、積込配管を冷却するためのクールダウンを必要と
する。The loading pipe is usually brought to a normal temperature state by draining the liquid inside after the loading is completed, and a cooling down is required to cool the loading pipe when loading the cooling liquid.
そこで、アーム遮断弁を閉じたままＬＮ２タンクのタン
ク元弁を開き、ＬＮ２送液弁を徐々に開きながら１時間
当り５０℃程度の速度で冷却するようにし、アーム遮断
弁の近傍に設けられた温度調節弁及び圧力調節弁で管内
の温度が−１７０℃程度になるまでＬＮ２を大気に放出
させてクールダウンを行う。Therefore, the tank main valve of the LN 2 tank is opened with the arm shutoff valve closed, and the LN 2 liquid feeding valve is gradually opened to cool at a rate of about 50 ° C. per hour, and is provided near the arm shutoff valve. The temperature control valve and the pressure control valve thus provided release LN 2 into the atmosphere until the temperature in the pipe reaches about −170 ° C. to perform cool down.
そして、管内の温度が−１７０℃程度になったところ
で、温度調節弁と圧力調節弁を閉じ、アーム遮断弁を開
いてＬＮ２の積込みを行うようにしている。Then, when the temperature inside the pipe reaches about -170 ° C., the temperature control valve and the pressure control valve are closed, and the arm shutoff valve is opened to load LN 2 .
一方、積込み完了後は、アーム遮断弁を閉じた後、圧力
調節弁を開くなどして大気中に放出したり、ＬＮ２タン
ク内を減圧してＬＮ２タンクに回収するようにしてい
る。On the other hand, after the loading is completed, the arm shutoff valve is closed and then the pressure control valve is opened to release it into the atmosphere, or the inside of the LN 2 tank is decompressed and collected in the LN 2 tank.
［考案が解決しようとする課題］ ところが、このようなＬＮ２の積込設備では、アーム遮
断弁の近傍の温度調節弁のところに作業者がつき、管内
の温度が所定の温度になったことを確かめたり、ＬＮ２
送液弁を作業者が経験と勘によって操作して冷却速度を
調整するようにしており、クールダウンに要する時間が
その都度変化するなど作業能率が悪いという問題があっ
た。[Problems to be solved by the invention] However, in such LN 2 loading equipment, an operator was attached to the temperature control valve near the arm shutoff valve, and the temperature inside the pipe reached a predetermined temperature. Check the LN 2
The operator operates the liquid feed valve based on experience and intuition to adjust the cooling rate, and there is a problem that the work efficiency is poor because the time required for cooldown changes each time.
また、積込み完了後に管内の液を放出する場合には、大
きな無駄が生じるという問題もある。There is also a problem that a large amount of waste occurs when the liquid in the pipe is discharged after the loading is completed.
この考案は、かかる従来技術の課題に鑑みてなされたも
ので、クールダウンから積込み後の液の回収までを自動
化することができる低温液体運搬船への冷却液自動積込
回収装置を提供しようとするものである。The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to provide an automatic cooling liquid loading / collecting device for a low-temperature liquid carrier capable of automating from cooling down to collecting liquid after loading. It is a thing.
［課題を解決するための手段］ 上記従来技術が有する課題を解決するため、この考案の
低温液体運搬船への冷却液自動積込回収装置は、低温液
体運搬船に冷却液タンクから冷却液を積込む積込配管に
おいて、冷却液タンクのタンク元弁の下流側に設けられ
る冷却液送液弁にバイパス管を設けるとともにこのバイ
パス管に制限オリフィスとクールダウン弁を設け、積込
配管の先端部のアーム遮断弁の上流側に一端部が開放さ
れた温度調節弁と圧力調節弁の他端部を接続する一方、
クールダウン時にはクールダウン弁に開信号を出力し冷
却液タンクから前記バイパス管の制限オリフィスを介し
て所定割合で積込配管に送液して冷却する制御信号を出
力し、クールダウン後の積込時には、，所定温度で温度
調節弁および圧力調節弁に閉信号を出力するとともに、
アーム遮断弁および冷却液送出弁に開信号を出力し、積
込み完了後には、アーム遮断弁の閉信号により冷却液タ
ンクの大気放出弁を開いて冷却液タンクに積込配管の冷
却液を減圧回収する制御信号を出力する制御装置を設け
たことを特徴とするものである。[Means for Solving the Problems] In order to solve the problems of the above-mentioned conventional technology, the cooling liquid automatic loading / collecting device for a low temperature liquid carrier of the present invention loads the cooling liquid from the cooling liquid tank onto the low temperature liquid carrier. In the loading pipe, a cooling liquid feed valve provided on the downstream side of the tank source valve of the cooling liquid tank is provided with a bypass pipe, and a restriction orifice and a cooldown valve are provided in this bypass pipe, and an arm at the tip of the loading pipe is provided. While connecting the temperature control valve with one end opened to the upstream side of the shutoff valve and the other end of the pressure control valve,
During cool-down, an open signal is output to the cool-down valve, and a control signal for cooling the liquid by sending it from the cooling liquid tank to the loading pipe at a predetermined rate through the limiting orifice of the bypass pipe to cool it, and loading after cooling down. Occasionally, a close signal is output to the temperature control valve and pressure control valve at a predetermined temperature, and
An open signal is output to the arm cutoff valve and the cooling liquid delivery valve, and after loading is completed, the atmosphere release valve of the cooling liquid tank is opened by the closing signal of the arm cutoff valve, and the cooling liquid in the loading pipe is collected under reduced pressure in the cooling liquid tank. It is characterized in that a control device for outputting a control signal is provided.
［作用］ この低温液体運搬船への冷却液自動積込回収装置によれ
ば、クールダウン時の冷却速度を冷却液送液弁のバイパ
ス管に設けた制限オリフィスとクールダウン弁で行うよ
うにして所定の割合で冷却できるようにする一方、制御
装置によって温度調節弁、圧力調節弁、アーム遮断弁な
どの開閉を制御するようにしており、クールダウンから
積込み、回収までを自動的にできるようにしている。[Operation] According to the automatic cooling liquid loading / collecting device for the low-temperature liquid carrier, the cooling speed at the time of cooldown is determined by the restriction orifice and the cooldown valve provided in the bypass pipe of the cooling liquid transfer valve. While controlling the opening and closing of the temperature control valve, pressure control valve, arm shutoff valve, etc. by the control device, it is possible to automatically cool down, load, and recover. There is.
したがって、多数の作業者を必要とせず、能率良く、ク
ールダウンから積込み回収までを行うことができ、大幅
な省力化を達成できる。Therefore, a large number of workers are not required, and it is possible to efficiently carry out from the cool down to the loading and collecting, and it is possible to achieve a significant labor saving.
また、冷却液を冷却液タンクに回収するようにしている
ので、冷却液を無駄にすることなく、有効に利用でき
る。Further, since the cooling liquid is collected in the cooling liquid tank, the cooling liquid can be effectively used without being wasted.
［実施例］ 以下、この考案の一実施例を図面に基づき詳細に説明す
る。[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.
第１図はこの考案の低温液体運搬船への冷却液自動積込
回収装置の一実施例にかかり、ＬＮＧ船へのＬＮ２の積
込配管に適用した場合の概略構成図である。FIG. 1 is a schematic configuration diagram of an embodiment of an automatic cooling liquid loading / collecting device for a cryogenic liquid carrier of the present invention, which is applied to an LN 2 loading pipe for an LNG carrier.
この冷却液自動積込回収装置１０が設置される冷却液
（ＬＮ２）の積込配管１１は、ＬＮＧ船と接続されるロ
ーディングアーム１２と基地側の冷却液タンク（ＬＮ２
タンク）１３との間に設けられる。The cooling liquid (LN 2 ) loading pipe 11 in which the automatic cooling liquid loading and collecting apparatus 10 is installed includes a loading arm 12 connected to an LNG carrier and a cooling liquid tank (LN 2) on the base side.
It is provided between the tank 13).
この積込配管１１のローディングアーム１２側にはアー
ム遮断弁１４が設けられ、さらに上流側に温度調節弁１
５と圧力調節弁１６の一端部が接続され、他端部が大気
に開放されている。また、積込配管１１の冷却液タンク
１３側には、タンク元弁１７の下流側に冷却液送液弁
（ＬＮ２送液弁）１８が設けてあり、積込み時には、こ
の冷却液送液弁１８の開度を調節してＬＮＧ船へ送液す
る。An arm shutoff valve 14 is provided on the loading arm 12 side of the loading pipe 11, and the temperature control valve 1 is further provided on the upstream side.
5 and one end of the pressure control valve 16 are connected, and the other end is open to the atmosphere. Further, on the cooling liquid tank 13 side of the loading pipe 11, a cooling liquid feeding valve (LN 2 liquid feeding valve) 18 is provided on the downstream side of the tank source valve 17, and at the time of loading, this cooling liquid feeding valve. The opening of 18 is adjusted and liquid is sent to the LNG carrier.
一方、冷却液タンク１３には、加圧送液用の加熱器１９
が設けられるとともに、大気放出弁２０が設けてある。On the other hand, the cooling liquid tank 13 has a heater 19 for pressurized liquid feeding.
And an atmospheric release valve 20 are provided.
そして、積込配管１１のクールダウンを自動的に行うた
め冷却液送液弁１８をバイパスするようにバイパス管２
１が設けられ、このバイパス管２１にクールダウン弁２
２と制限オリフィス２３が介装されている。Then, in order to automatically cool down the loading pipe 11, the bypass pipe 2 bypasses the cooling liquid feed valve 18.
1 is provided, and the cool down valve 2 is provided in the bypass pipe 21.
2 and the restriction orifice 23 are interposed.
したがって、冷却液送液弁１８を閉じた状態でもクール
ダウン弁２２を開くことで積込配管１１に冷却液タンク
１３から冷却液を送り出すことができ、しかも制限オリ
フィス２３によって流量を所定量に制限することができ
る。Therefore, even when the cooling liquid supply valve 18 is closed, the cooling liquid can be sent from the cooling liquid tank 13 to the loading pipe 11 by opening the cool down valve 22, and the flow rate is limited to a predetermined amount by the limiting orifice 23. can do.
さらに、これら各弁を制御するため制御装置２４が設け
られ、それぞれと電気的に接続されている。Further, a control device 24 is provided to control each of these valves, and is electrically connected to each of them.
次に、制御装置２４の作用とともに、この冷却液自動積
込回収装置１０による積込配管１１のクールダウン、冷
却液の積込み、管内液の回収について説明する。Next, the operation of the control device 24 and the cooling down of the loading pipe 11 by the automatic cooling liquid loading / collecting device 10, the loading of the cooling liquid, and the recovery of the in-pipe liquid will be described.
（１）クールダウン クールダウン開始前にあっては、アーム遮断弁１４及び
タンク元弁１７が閉じられ、積込配管１１が常温状態と
なっている。(1) Cooldown Before the start of the cooldown, the arm shutoff valve 14 and the tank main valve 17 are closed, and the loading pipe 11 is in a room temperature state.
この状態からＬＮＧ船の入港前などクールダウンの必要
なとき、冷却液タンク１３の加圧送液用の加熱器１９を
作動させ送液できるように冷却液タンク１３内の冷却液
を加圧し、さらに、温度調節弁１５を−１７０℃程度で
閉じ、この設定温度まで開放状態となるように設定する
とともに、圧力調節弁１６を積込配管１１の許容圧力よ
り低い値で開放状態となり、通常の送出圧力では閉じた
状態となるように設定しておく。From this state, when cooling down is required, such as before the arrival of the LNG carrier, the heater 19 for pressurized liquid feeding of the cooling liquid tank 13 is operated to pressurize the cooling liquid in the cooling liquid tank 13, and further. , The temperature control valve 15 is closed at about -170 ° C. and set to the open state up to this set temperature, and the pressure control valve 16 is opened at a value lower than the allowable pressure of the loading pipe 11 for normal delivery. Set so that it will be closed under pressure.
こうして準備ができた後、タンク元弁１７を開くととも
に、制御装置２４からクールダウン弁２２に開信号を出
力する。After the preparation is completed, the tank valve 17 is opened and the controller 24 outputs an open signal to the cool down valve 22.
すると、冷却液タンク１３からの冷却液がタンク元弁１
７からバイパス管２１、クールダウン弁２２、制限オリ
フィス２３を通って積込配管１１に流れ、制限オリフィ
ス２３で制限された流量によって所定の冷却速度、例え
ば５０℃／Ｈで冷却され、クールダウンが行われる。Then, the cooling liquid from the cooling liquid tank 13 is supplied to the tank valve 1
7 through the bypass pipe 21, the cool down valve 22, and the restriction orifice 23 to the loading pipe 11, and is cooled at a predetermined cooling rate, for example, 50 ° C./H, by the flow rate restricted by the restriction orifice 23, and the cool down is performed. Done.
このクールダウンの際、気化した冷却液ガス（窒素ガ
ス）で積込配管１１内の圧力が上昇すると、圧力調節弁
１６が開かれ、大気中に放出される一方、所定の冷却温
度、例えば−１７０℃になるまでは、温度調節弁１５が
開いているので、全ての冷却液が大気中に放出される。During this cool-down, when the pressure in the loading pipe 11 rises due to the vaporized cooling liquid gas (nitrogen gas), the pressure control valve 16 is opened and released into the atmosphere, while at the same time a predetermined cooling temperature, for example − Until the temperature reaches 170 ° C., since the temperature control valve 15 is open, all the cooling liquid is released into the atmosphere.
（２）冷却液の積込み この冷却液の積込みは、積込配管１１の出力側である温
度調節弁１５の温度検出部で冷却液の温度が−１７０℃
程度になったところで、冷却液が全て液体の状態である
と判断して行われる。(2) Loading of cooling liquid In the loading of cooling liquid, the temperature of the cooling liquid is −170 ° C. at the temperature detection part of the temperature control valve 15 on the output side of the loading pipe 11.
When it reaches a certain level, it is determined that the cooling liquid is all in a liquid state.
まず、温度調節弁１５および圧力調節弁１６が閉じられ
るとともに、クールダウン弁２２が閉じられ、冷却液送
液弁１８およびアーム遮断弁２４を開くように制御装置
２４から制御信号が出力される。First, the temperature control valve 15 and the pressure control valve 16 are closed, the cool down valve 22 is closed, and the control device 24 outputs a control signal to open the cooling liquid feed valve 18 and the arm cutoff valve 24.
すると、冷却液タンク１３の加圧送液用の加熱器１９に
よって加圧された冷却液が積込配管１１のタンク元弁１
７、冷却液送液弁１８およびアーム遮断弁１４を介して
ＬＮＧ船に送られ、積込みが行われる。Then, the cooling liquid pressurized by the heater 19 for pressurized liquid feeding of the cooling liquid tank 13 is supplied to the tank main valve 1 of the loading pipe 11.
7, the cooling liquid feed valve 18 and the arm cutoff valve 14 are sent to the LNG ship for loading.
そして、所定量の冷却液の積込みが行われたところで、
アーム遮断弁１４が閉じられて積込みが完了する。Then, when a predetermined amount of cooling liquid is loaded,
The arm shutoff valve 14 is closed and the loading is completed.
（３）積込配管内の冷却液の回収 冷却液の積込みが完了してアーム遮断弁１４が閉じられ
た信号が制御装置２４に入力されると、積込み状態から
回収作業に入る。(3) Recovery of the cooling liquid in the loading pipe When the loading of the cooling liquid is completed and a signal that the arm shutoff valve 14 is closed is input to the control device 24, the recovery work is started from the loading state.
まず、制御装置２４から冷却液タンク１３の加圧送液用
の加熱器１９に加圧停止の信号が送られるとともに、大
気放出弁２０に開信号が送られ、冷却液タンク１３内を
減圧状態にする。First, the control device 24 sends a pressurization stop signal to the heater 19 for pressurizing and feeding the cooling liquid tank 13, and at the same time, sends an open signal to the atmosphere release valve 20 to depressurize the cooling liquid tank 13. To do.
すると、積込配管１１内の冷却液が加圧状態となってい
るため、積込配管１１を冷却液タンク１３に向かって冷
却液が逆流し、冷却液タンク１３内に冷却液が回収され
る。Then, since the cooling liquid in the loading pipe 11 is in a pressurized state, the cooling liquid flows back through the loading pipe 11 toward the cooling liquid tank 13, and the cooling liquid is recovered in the cooling liquid tank 13. .
そして、積込配管１１内の圧力が冷却液タンク１３内と
同一となったところで、回収が完了したと判断され、タ
ンク元弁１７が閉じられ、回収作業が完了する。Then, when the pressure in the loading pipe 11 becomes the same as that in the cooling liquid tank 13, it is determined that the recovery is completed, the tank base valve 17 is closed, and the recovery work is completed.
このようにしてクールダウン、積込み、回収が行われ、
この冷却液自動積込回収装置１０によれば、全ての作業
を自動的に行うことができる。In this way, cool down, loading and collection are performed,
According to the cooling liquid automatic loading / collecting device 10, all the operations can be automatically performed.
したがって、多数の作業者を必要とせず、能率的に冷却
液の積込作業ができる。Therefore, it is possible to efficiently load the cooling liquid without requiring a large number of workers.
また、クールダウンの際、作業者の経験や勘に頼ること
なく、一定の冷却速度で冷却でき、積込配管１１の損傷
を招くこともなく、所定の時間でウールダウンできる。Further, at the time of cooldown, it is possible to cool at a constant cooling rate without relying on the experience and intuition of an operator, and to cause wool damage in a predetermined time without causing damage to the loading pipe 11.
さらに、積込完了後に冷却液を回収するので、冷却液の
無駄を無くし、有効に利用できる。Further, since the cooling liquid is collected after the loading is completed, the cooling liquid is not wasted and can be effectively used.
尚、上記実施例では、ＬＮＧ船の冷却液の積込配管に適
用した場合で説明したが、これに限らず、ＬＰＧなど他
の低温液体運搬船への冷却液の積込回収などに広く適用
できるものである。In addition, in the above-described embodiment, the case where the invention is applied to the loading pipe for the cooling liquid of the LNG ship has been described, but the invention is not limited to this, and can be widely applied to the loading recovery of the cooling liquid to other low temperature liquid carrier such as LPG. It is a thing.
また、冷却液の種類も液化窒素に限るものでなく、他の
液体でも良く、冷却液の種類に応じて制御装置の設定値
を変えるようにすれば良い。Further, the type of the cooling liquid is not limited to liquefied nitrogen and may be another liquid, and the set value of the control device may be changed according to the type of the cooling liquid.
［考案の効果］ 以上、一実施例とともに具体的に説明したようにこの考
案の低温液体運搬船への冷却液自動積込回収装置によれ
ば、クールダウン時の冷却速度を冷却液送液弁のバイパ
ス管に設けた制限オリフィスとクールダウン弁で行うよ
うにして所定の割合で冷却できるようにする一方、制御
装置によって温度調節弁、圧力調節弁、アーム遮断弁な
どの開閉を制御するようにしたので、クールダウンから
積込み、回収までを自動的に行うことができる。[Effects of the Invention] As described above in detail with the embodiment, according to the cooling liquid automatic loading / collecting device for the low temperature liquid carrier of the present invention, the cooling speed at the time of cool down is controlled by the cooling liquid transfer valve. The restriction orifice provided in the bypass pipe and the cool-down valve allow cooling at a predetermined rate, while the control device controls the opening and closing of the temperature control valve, pressure control valve, arm cutoff valve, etc. Therefore, it is possible to automatically perform from cooling down to loading and collecting.
したがって、多数の作業者を必要とせず、能率良く、ク
ールダウンから積込回収までを行うことができ、大幅な
省力化を達成できる。Therefore, a large number of workers are not required, the cooling down to the loading and collecting can be efficiently performed, and a great labor saving can be achieved.
また、冷却液を冷却液タンクに回収するようにしている
ので、冷却液を無駄にすることなく、有効に利用でき
る。Further, since the cooling liquid is collected in the cooling liquid tank, the cooling liquid can be effectively used without being wasted.
第１図はこの考案の低温液体運搬船への冷却液自動積込
回収装置の一実施例にかかり、ＬＮＧ船への冷却液の積
込配管に適用した場合の概略構成図である。 １０：低温液体運搬船への冷却液自動積込回収装置、１
１：積込配管、１２：ローディングアーム、１３：冷却
液タンク（ＬＮ２タンク）、１４：アーム遮断弁、１
５：温度調節弁、１６：圧力調節弁、１７：タンク元
弁、１８：冷却液送液弁（ＬＮ２送液弁）、１９：加圧
送液用の加熱器、２０：大気放出弁、２１：バイパス
管、２２：クールダウン弁、２３：制限オリフィス、２
４：制御装置。FIG. 1 is a schematic diagram of an embodiment of an automatic cooling liquid loading / collecting device for a low temperature liquid carrier according to the present invention, which is applied to a cooling liquid loading pipe for an LNG carrier. 10: Automatic cooling liquid loading / collecting device for low temperature liquid carrier, 1
1: Loading pipe, 12: Loading arm, 13: Coolant tank (LN 2 tank), 14: Arm shutoff valve, 1
5: Temperature control valve, 16: Pressure control valve, 17: Tank main valve, 18: Coolant delivery valve (LN 2 delivery valve), 19: Heater for pressurized delivery, 20: Atmosphere release valve, 21 : Bypass pipe, 22: Cool down valve, 23: Restriction orifice, 2
4: Control device.
Claims (1)
を積込む積込配管において、冷却液タンクのタンク元弁
の下流側に設けられる冷却液送液弁にバイパス管を設け
るとともにこのバイパス管に制限オリフィスとクールダ
ウン弁を設け、積込配管の先端部のアーム遮断弁の上流
側に一端部が開放された温度調節弁と圧力調節弁の他端
部を接続する一方、クールダウン時には、クールダウン
弁に開信号を出力し冷却液タンクから前記バイパス管の
制限オリフィスを介して所定割合で積込配管に送液して
冷却する制御信号を出力し、クールダウン後の積込時に
は、所定温度で温度調節弁および圧力調節弁に閉信号を
出力するとともにアーム遮断弁および冷却液送液弁に開
信号を出力し、積込み完了後には、アーム遮断弁の閉信
号により冷却液タンクの大気放出弁を開いて冷却液タン
クに積込配管の冷却液を減圧回収する制御信号を出力す
る制御装置を設けたことを特徴とする低温液体運搬船へ
の冷却液自動積込回収装置。1. A loading pipe for loading a cooling liquid from a cooling liquid tank on a low temperature liquid carrier, wherein a bypass pipe is provided at a cooling liquid feeding valve provided on a downstream side of a tank source valve of the cooling liquid tank and the bypass pipe. A restriction orifice and a cooldown valve are installed in the, and the other end of the temperature control valve and the other end of the pressure control valve whose one end is opened is connected to the upstream side of the arm shutoff valve at the tip of the loading pipe. An open signal is output to the cool-down valve to output a control signal from the cooling liquid tank to the loading pipe via the limiting orifice of the bypass pipe to cool the liquid by feeding it to the loading pipe at a predetermined rate. Outputs a close signal to the temperature control valve and pressure control valve at temperature, outputs an open signal to the arm cutoff valve and the coolant delivery valve, and after loading is completed, the coolant cutoff signal is output by the arm cutoff valve close signal. Click coolant automatic loading recovery device to the cold liquid carrier, characterized in that the coolant loading pipe provided with a control unit for outputting a control signal to reduce the pressure recovery in the cooling liquid tank by opening the atmosphere release valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP335789U JPH067280Y2 (en) | 1989-01-13 | 1989-01-13 | Cooling liquid automatic loading and collecting device for cryogenic liquid carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP335789U JPH067280Y2 (en) | 1989-01-13 | 1989-01-13 | Cooling liquid automatic loading and collecting device for cryogenic liquid carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0295000U JPH0295000U (en) | 1990-07-27 |
| JPH067280Y2 true JPH067280Y2 (en) | 1994-02-23 |
Family
ID=31204921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP335789U Expired - Lifetime JPH067280Y2 (en) | 1989-01-13 | 1989-01-13 | Cooling liquid automatic loading and collecting device for cryogenic liquid carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067280Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009108913A (en) * | 2007-10-30 | 2009-05-21 | Tokyo Gas Co Ltd | Liquefied fuel gas supply apparatus |
| CA3006957C (en) * | 2015-12-14 | 2020-09-15 | Exxonmobil Upstream Research Company | Method of natural gas liquefaction on lng carriers storing liquid nitrogen |
| JP7241577B2 (en) * | 2019-03-14 | 2023-03-17 | 大阪瓦斯株式会社 | Method of loading and unloading liquefied cryogenic fluid |
-
1989
- 1989-01-13 JP JP335789U patent/JPH067280Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0295000U (en) | 1990-07-27 |
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