JP6574321B1 - Floating body type low temperature liquefied gas filling equipment and low temperature liquefied gas delivery method using the same - Google Patents

Abstract

A container disposed on a plurality of transportation trucks on the ground is directly and simultaneously filled with a low-temperature liquefied gas, so that the low-temperature liquefied gas can be delivered even to a place where there is no facility for receiving the low-temperature liquefied gas. A floating low-temperature liquefied gas filling facility and a low-temperature liquefied gas delivery method using the same are provided. A floating low-temperature liquefied gas filling equipment according to the present invention is a floating low-temperature liquefied gas filling equipment for delivering a low-temperature liquefied gas from the sea to the land, a barge tank, and a transport truck from the barge tank to the ground. A hose 13 for transferring the low-temperature liquefied gas to the container 41 on 40, a low-temperature liquefied gas distribution unit 20 detachably attached to one end of the hose, and holding the hose at a predetermined height during the low-temperature liquefied gas transfer A crane 14 and a filling means 15 for filling the container with the low-temperature liquefied gas, and the distribution unit selectively opens and closes the low-temperature liquefied gas inlet, the plurality of outlets, and the respective outlets. And a valve. [Selection] Figure 1

Description

  The present invention relates to a floating-type cryogenic liquefied gas filling facility and a cryogenic liquefied gas delivery method using the same, and more particularly to filling a cryogenic liquefied gas directly and simultaneously into containers arranged on a plurality of transportation trucks on the ground. Floating-type low-temperature liquefied gas filling equipment that enables easy and efficient delivery of low-temperature liquefied gas even where there is no low-temperature liquefied gas receiving facility, and a low-temperature liquefied gas delivery method using the same is there.

A country that produces oil and gas in its own country can send excess oil and gas after consuming the necessary amount to export if it exceeds its own consumption. If the amount does not meet the consumption, it will be imported from another country. In this case, liquefied gas such as liquefied petroleum gas (LPG) and liquefied natural gas (LNG) having a low environmental impact is desirable as oil and gas to be purchased as fuel. In particular, liquefied natural gas emits less CO ₂ than petroleum products. There are few, and the price is cheap, so future distribution is expected.

The low-temperature liquefied gas liquefied at low temperature is transported by sea on a dedicated large transport ship (LNG ship). The transported low-temperature liquefied gas is usually transferred to the storage facility that is the primary base on the receiving side, and is transferred from this storage facility to the storage facility that is the secondary base, or gasified by the gasification facility and then pipelined. Used directly to consumers.
In addition, if there is no storage facility or gasification facility to be the primary base on the receiving side, the transported low-temperature liquefied gas is transferred from the large transport ship to the floating liquefied natural gas storage and regasification facility (FSRU), Distribution methods such as storage instead of a base or gasification and supply to a pipeline on the ground have also been put into practical use.

  However, there are only a limited number of ports with large and deep harbor facilities that allow LNG ships and FSRUs to berth, and there are limited areas where the system for receiving low-temperature liquefied gas is in place. In particular, in areas where islands are scattered and developing areas, it is not realistic to develop such a large dedicated infrastructure in all areas where gas is to be used.

  Patent Document 1 discloses a low-temperature liquefied gas storage facility, a pump for taking out the low-temperature liquefied gas in the storage facility out of the storage facility and sending it to the supply side, and vaporizing the low-temperature liquefied gas on the floating structure. To a remote island equipped with a floating transportation facility that has a vaporizer that can be sent out as a gas, and that can supply low-temperature liquefied gas as a liquid or vaporized gas to the supply side. A cryogenic liquefied gas delivery device is disclosed.

  According to Patent Document 1, since the floating transportation facility can supply the low-temperature liquefied gas as a liquid or as a vaporized gas, there is no merit that there are more options, such as the necessity of including the gasification facility in the receiving facility. However, in the technique of Patent Document 1, it is assumed that such a receiving facility is provided in a port that receives a low-temperature liquefied gas.

However, even if it is small-scale, the construction cost of receiving facilities is high, and it cannot be easily constructed for each port that delivers low-temperature liquefied gas. In addition, when a region that requires low-temperature liquefied gas as a fuel and a port that delivers low-temperature liquefied gas are separated, it is necessary to construct a long pipeline in addition to this, which is difficult to realize.
Therefore, it is desirable to realize facilities and methods for easily and efficiently delivering low-temperature liquefied gas even when there is no receiving facility at a port that is a receiving point for low-temperature liquefied gas.

JP 2009-191860 A

  The present invention has been made in view of the problems in the conventional floating-type low-temperature liquefied gas filling equipment and the low-temperature liquefied gas delivery method using the same, and the object of the present invention is on a plurality of ground transportation trucks. It is possible to directly and simultaneously fill a container placed in a low-temperature liquefied gas, and to deliver a low-temperature liquefied gas easily and efficiently even in a place without a low-temperature liquefied gas receiving facility. A floating-type low-temperature liquefied gas filling facility and a low-temperature liquefied gas delivery method using the same are provided.

The floating low-temperature liquefied gas filling equipment according to the present invention made to achieve the above object is a floating low-temperature liquefied gas filling equipment for delivering a low-temperature liquefied gas from the sea to the land, and is temporarily filled with the low-temperature liquefied gas. A barge tank to be stored, a hose for transferring low-temperature liquefied gas from the liquefied gas supply facility to the barge tank, and transferring the low-temperature liquefied gas from the barge tank to a container disposed on a ground transportation truck, A cryogenic liquefied gas distribution unit that is detachably attached to one end of the hose, a crane that holds the hose at a predetermined height during the cryogenic liquefied gas transfer, and a filling means that fills the container with the cryogenic liquefied gas. The low-temperature liquefied gas distribution unit has a low-temperature liquefied gas inlet connected to one end of the hose, and the low-temperature liquefied gas is supplied to the plurality of containers. A plurality of discharge port for discharging at opening and closing valve which opens and closes the respective discharge ports selectively perform one end connected to the discharge port, and a plurality of injection hose the other end connected to the inlet of the container A hook for lifting by the crane, and the cryogenic liquefied gas distribution unit is attached to one end of the hose connected to the filling means when simultaneously filling a plurality of containers, and has a predetermined height by the crane. The low-temperature liquefied gas distribution unit has a funnel-like or disc-like shape, and the plurality of outlets are arranged at equal intervals so that the outflow characteristics are uniform. Once again, be adjusted to the discharge flow rate of the low-temperature liquefied gas from each discharge port are equal, the injection hose against the container end of the connecting side to the container A switch that operates when the sensor is connected to the container or the container, and the opening / closing valve of the outlet to which the injection hose is connected is opened when the injection hose is not connected to the container. It is constructed so as not to be broken.

  The low-temperature liquefied gas distribution unit includes flow rate detecting means for individually detecting the flow rate of the low-temperature liquefied gas discharged from each discharge port, and is separate from the on-off valve or the on-off valve based on the detected low-temperature liquefied gas flow rate. It is preferable that the discharge flow rate of the low-temperature liquefied gas can be individually adjusted by a flow rate adjusting means provided individually.

The hose low temperature liquefied gas from the barge tank by said filling means, preferably be transferred directly to one or more of the containers through the low-temperature liquefied gas distribution unit.

  The low-temperature liquefied gas is liquefied natural gas (LNG), the liquefied gas supply facility is a liquefied natural gas ship or a floating liquefied natural gas storage regasification facility (FSRU), and the filling means is a pressurized evaporator or A pump is preferred.

  The low-temperature liquefied gas delivery method according to the present invention made to achieve the above object is a low-temperature liquefied gas delivery method using the above-mentioned floating-type low-temperature liquefied gas filling equipment, and the floating-type low-temperature liquefied gas filling equipment in the liquefied gas supply equipment After the mooring, the receiving stage for transferring the low-temperature liquefied gas from the liquefied gas supply equipment to the barge tank of the floating low-temperature liquefied gas filling equipment via the hose, and the floating low-temperature liquefied gas filling equipment to the delivery location of the low-temperature liquefied gas A transportation stage for moving, and a filling stage for directly filling a cryogenic liquefied gas into a container disposed on a ground transportation truck from the barge tank via the hose by a filling means, and simultaneously cooling a plurality of containers at a low temperature When filling liquefied gas, a low-temperature liquefied gas distribution unit comprising a plurality of outlets at one end of the hose discharge side before the filling stage Characterized by further comprising a connection step of connecting.

  The low-temperature liquefied gas distribution unit selectively selects a low-temperature liquefied gas inlet connected to one end of the hose, a plurality of outlets for simultaneously discharging the low-temperature liquefied gas to the plurality of containers, and opening and closing of the respective outlets. And a flow rate detecting means for individually detecting the flow rate of the low-temperature liquefied gas discharged from the respective discharge ports, and the filling stage has the necessary number of discharge ports according to the number of the containers to be filled at the same time. The selection step of selectively opening the on-off valve, and the discharge of the low-temperature liquefied gas by the flow rate adjusting means provided separately from the on-off valve or the on-off valve based on the flow rate of the low-temperature liquefied gas detected by the flow rate detecting means And adjusting the flow rate individually.

  The low-temperature liquefied gas is liquefied natural gas (LNG), the liquefied gas supply facility is a liquefied natural gas ship or a floating liquefied natural gas storage regasification facility (FSRU), and the filling means is a pressurized evaporator or A pump is preferred.

  According to the floating low temperature liquefied gas filling equipment and the low temperature liquefied gas delivery method using the same according to the present invention, the container placed on the transport truck is filled directly from the floating low temperature liquefied gas filling equipment. The port that accepts gas can transport cryogenic liquefied gas as long as there is an area where transport trucks stop. Therefore, it is not necessary to construct expensive receiving equipment, and it is easy to use cryogenic liquefied gas in many areas that do not have such equipment. Can be delivered.

  Further, according to the floating low-temperature liquefied gas filling equipment and the low-temperature liquefied gas delivery method using the same according to the present invention, the low-temperature liquefied gas is injected from the floating low-temperature liquefied gas filling equipment by the low-temperature liquefied gas distribution unit. Since it is selectively diverted to the hose, it can be diverted according to the number of transport trucks on the receiving side, and simultaneous filling becomes possible. This makes it possible to efficiently perform the low temperature liquefied gas filling operation. When multiple containers are filled at the same time, by providing flow rate detection means and flow rate adjustment means that individually detect the flow rate of the low-temperature liquefied gas discharged from each discharge port of the low-temperature liquefied gas distribution unit, variation in filling time This makes it possible to perform the filling operation most efficiently.

  Furthermore, since the floating low-temperature liquefied gas filling equipment according to the present invention includes a hose used for receiving and discharging and a crane supporting the hose, a liquefied gas such as a liquefied natural gas ship or a floating liquefied natural gas storage regasification equipment is used. There is no need to equip the supply equipment with a hose or crane for transferring liquefied natural gas. Likewise, there is no need to equip the receiving side with a hose or crane. Therefore, as long as there is room for the truck to stop at the port, a single low-temperature liquefied liquefied gas filling facility can be used for filling the liquefied liquefied gas into the containers on the truck at a plurality of points. Even if, for example, a primary base equipped with a truck filling facility is built on land, it will no longer be necessary to fill the container with low-temperature liquefied gas in the future. And even in places where there is no such primary base, a low-temperature liquefied gas distribution business can be implemented.

  Containers filled with low-temperature liquefied gas can be transported by truck, railway, cargo ship, etc., so there is no need for pipelines, dedicated facilities, primary bases, secondary bases, etc. It can be delivered to small customers.

It is a figure which shows roughly the floating body type low temperature liquefied gas filling equipment by embodiment of this invention, and the low temperature liquefied gas delivery method using the same. It is the schematic which shows planarly the method to transfer low-temperature liquefied gas to the ground container by the floating type low-temperature liquefied gas filling equipment by embodiment of this invention. It is a figure which shows roughly the structure of the low-temperature liquefied gas distribution unit by embodiment of this invention. It is a flowchart for demonstrating the low-temperature liquefied gas delivery method by embodiment of this invention.

Next, a specific example of a mode for carrying out a floating-type low-temperature liquefied gas filling facility and a low-temperature liquefied gas delivery method using the same according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram schematically showing a floating low-temperature liquefied gas filling facility and a low-temperature liquefied gas delivery method using the same according to an embodiment of the present invention.
Referring to FIG. 1, a floating cryogenic liquefied gas filling facility 10 according to an embodiment of the present invention includes a floating body 11 floating on the sea, a barge tank 12 provided on the floating body 11, a hose 13, a crane 14, and filling means. 15 and a cryogenic liquefied gas distribution unit 20.

The floating low-temperature liquefied gas filling equipment 10 according to the embodiment of the present invention transfers the low-temperature liquefied gas from the liquefied gas supply equipment to the barge tank 12 and temporarily stores it, then moves to the delivery destination port and fills 15 Thus, by transferring the low-temperature liquefied gas directly from the barge tank 12 to the container placed on the transportation truck waiting on the ground, it is possible to easily deliver the low-temperature liquefied gas even to a delivery destination without receiving facilities. It is equipment to do.
Moreover, according to the floating-type low-temperature liquefied gas filling equipment 10 according to the embodiment, even when there are a plurality of destination containers, the low-temperature liquefied gas distribution unit 20 is used to simultaneously fill the plurality of containers with the low-temperature liquefied gas. It is possible to deliver low-temperature liquefied gas efficiently in a short time.

  FIG. 1A shows a barge of a floating low temperature liquefied gas filling facility 10 from a liquefied gas supply facility 1 at sea in a series of delivery flows for delivering a low temperature liquefied gas from a liquefied gas supply facility to a container on the ground. FIG. 1B shows the stage of transferring the low-temperature liquefied gas to the tank 12, and FIG. 1B shows the stage of moving the floating low-temperature liquefied gas filling equipment 10 that temporarily stores the low-temperature liquefied gas to the delivery destination. c) shows the step of filling the cryogenic liquefied gas stored in the barge tank 12 into a container arranged on a transport truck waiting on the ground.

Referring to FIG. 1 (a), a floating low temperature liquefied gas filling facility 10 is moored side by side with a liquefied gas supply facility 1 waiting on the sea, a low temperature liquefied gas storage tank of the liquefied gas supply facility 1, and a floating type A barge tank 12 of the low-temperature liquefied gas filling facility 10 is connected by a hose 13.
In the embodiment, the low-temperature liquefied gas is liquefied natural gas (LNG), and the liquefied gas supply facility 1 is a liquefied natural gas ship or a floating liquefied natural gas storage regasification facility (FSRU). Since there is a wave at sea, when the floating low temperature liquefied gas filling facility 10 is moored by laying on the liquefied gas supply facility 1, it is laid across the buffer body 18 having a buffer portion such as rubber so as not to collide directly. . In the case where a buffer portion is provided on the side surface of the floating body type low-temperature liquefied gas filling facility 10, the buffer body 18 as another buffer element may not be prepared. The shock absorber 18 shown in FIG. 1 (a) is an air fender and is shown in a shape provided with a plurality of tire-like rubbers around the cylindrical main body, as long as it does not collide directly during mooring. Any shape or material may be used.

  In the embodiment, the liquefied gas supply facility 1 waits in a state where the liquefied gas supply facility 1 is anchored to a mooring means protruding from the sea or a mooring means such as an underwater pier or a harbor pier, and the floating low-temperature liquefied gas filling facility 10 is The low-temperature liquefied gas is delivered to and from one or a plurality of delivery destinations. Therefore, the buffer 18 is installed as a permanent installation at a place where the floating low temperature liquefied gas filling facility 10 is moored. By so doing, the floating low temperature liquefied gas filling facility 10 can be quickly moored to the liquefied gas supply facility 1. Mooring of the floating low-temperature liquefied gas filling equipment 10 to the liquefied gas supply equipment 1 is steadily performed using the mooring measure 19 so that the liquefied gas supply equipment 1 and the floating low-temperature liquefied gas filling equipment 10 are not displaced.

  In order to maintain the liquid phase at normal pressure, the liquefied natural gas needs to be −162 ° C. or lower, and the hose 13 uses a flexible hose. Since the liquefied gas supply facility 1 is very large, the discharge port for discharging the low-temperature liquefied gas from the storage tank is located at a high position from the sea surface, and the height difference from the height of the barge tank 12 is large. A crane 14 provided in the low-temperature liquefied gas filling facility 10 is used. Thus, by providing the crane 14 on the floating low temperature liquefied gas filling equipment 10 side, it is not necessary to install a special crane 14 for connecting the transfer hose to the liquefied gas supply equipment 1, and various liquefied gas supplies are provided. Acceptance from the facility 1 is possible. Since the crane 14 is for suspending the hose 13 or the cryogenic liquefied gas distribution unit 20 connected to the tip of the hose 13, the weight to be hung is limited, and a large-sized one that suspends heavy objects is not necessary. Since the hose 13 needs to be lifted high, a high-profile one that reaches a high place is desirable, and an extendable crane may be used.

When the hose 13 comes into contact with the sea surface, the temperature of the liquefied natural gas may be increased due to heat input from the sea water. Therefore, the crane 14 is suspended and held at a predetermined height so that the hose 13 does not hang down on the sea surface. .
Furthermore, in the embodiment, the floating body type low-temperature liquefied gas filling equipment 10 includes a hose support 16 that supports the hose 13 from below at a predetermined height so that the hose 13 is unlikely to hang down.

  It is desirable that the barge tank 12 is not larger than necessary in order to deliver the low-temperature liquefied gas mainly to a small port without receiving facilities. In the embodiment, for example, it has a size of about 3 m in diameter and about 20 m in length corresponding to four containers on a transport truck. However, the size is not limited to this, and may be determined in consideration of the topography and facilities in the area where low-temperature liquefied gas delivery is required, the number of transport trucks to be accepted, and traffic conditions. It doesn't matter.

  Referring to FIG. 1 (b), the floating cryogenic liquefied gas filling facility 10 storing the cryogenic liquefied gas moves on the sea toward the receiving port. In FIG. 1 (b), the floating body 11 is a barge ship and does not have power for navigation such as an engine, so that it is connected to the tugboat 30 via a tow rope 31 and towed. An engine may be mounted on the floating body 11 to sail by itself.

  Referring to FIG. 1 (c), when the floating cryogenic liquefied gas filling facility 10 contacts the port of the transport destination, the hose 13 connects the barge tank 12 and the container 41 disposed on the transport truck 40 waiting on the ground. The container 41 is filled with the low-temperature liquefied gas in the barge tank 12 by the filling means 15.

The filling means 15 is a pressurized evaporator or a pump. In the case of the pressurized evaporator, a part of the low-temperature liquefied gas in the barge tank 12 is vaporized and then returned to the barge tank 12, and the pressure in the barge tank 12 is reached. The low-temperature liquefied gas is sent out by raising. In the case of a pump, the pressure of the low-temperature liquefied gas is increased directly, so it is necessary to put it between the flow path from the barge tank 12 to the container 41, and the hose 13 is connected so as to connect the pump and the container 41.
As long as the low-temperature liquefied gas can be delivered, the filling means 15 may be a pressurized evaporator or a pump. However, a pressurized evaporator that can stably pressurize the low-temperature liquefied gas may be preferable because it may be shaken by waves at sea.

  When there is only one container 41 on the receiving side, the hose 13 directly connects the end portion on the container 41 side directly to the inlet of the container 41, but when there are a plurality of receiving side containers 41, A cryogenic liquefied gas distribution unit 20 is connected. The low-temperature liquefied gas distribution unit 20 has one low-temperature liquefied gas inlet connected to the hose 13 on the upstream side, but the low-temperature liquefied gas distribution unit 20 is discharged from a plurality of discharge ports in the low-temperature liquefied gas distribution unit 20. The flow path branches into a plurality.

  The low-temperature liquefied gas distribution unit 20 includes an on-off valve that selectively opens and closes the outlet of each outlet, and an injection hose 22 that connects each outlet and each container 41 is provided at the end of the on-off valve. Connected. Therefore, by selecting the open / close valve of the discharge port connected to the container 41 that performs simultaneous filling among the plurality of discharge ports and opening it, it becomes possible to fill the plurality of containers 41 simultaneously. .

  The filling of the cryogenic liquefied gas into the container 41 for a cryogenic liquefied gas having a general size requires about one hour per unit. For example, when four containers 41 are filled with a low-temperature liquefied gas, it takes four hours or more because only one container can be filled at a time in the prior art. However, the use of the low-temperature liquefied gas distribution unit 20 enables the four containers 41 to be filled in approximately one hour by simultaneous filling.

  Even when the container 41 is filled with the low-temperature liquefied gas from the barge tank 12, the hose 13 connecting the two is suspended by the crane 14 and held at a predetermined height. When connecting the low-temperature liquefied gas distribution unit 20, the injection hose 22 is not wound on the ground by suspending the low-temperature liquefied gas distribution unit 20 with the crane 14 as shown in FIG. Since it does not interfere with traffic, workability can be prevented from deteriorating.

  In the embodiment, the floating cryogenic liquefied gas filling facility 10 includes a hose support 17 that supports the hose 13 from below at a predetermined height so that the hose 13 is unlikely to hang down. In FIG. 1 (c), the hose support 16 is described as having a hose support 16 at one edge of the floating body 11 and the hose support 17 at the edge opposite to the hose support 16. When fixing to either one, the hose support (16, 17) may be unified, and in this case, the unified hose support is such that the support height for supporting the hose 13 is variable. It is preferable to configure.

FIG. 2 is a schematic diagram illustrating a method for transferring a low-temperature liquefied gas to a ground container by a floating-type low-temperature liquefied gas filling facility according to an embodiment of the present invention.
FIG. 2 shows a state in which the low-temperature liquefied gas is simultaneously filled in the four transport trucks 40 stopped on the ground. The transport truck 40 exemplifies a trailer type in which a container 41 is installed on a trailer serving as a carriage and is pulled by a tow vehicle 42.

The low temperature liquefied gas distribution unit 20 includes a low temperature liquefied gas distributor 21 and an injection hose 22. The low-temperature liquefied gas distributor 21 has one inflow port for the low-temperature liquefied gas connected to the hose 13, but has four outlets, thereby having a substantially home base type housing.
The cryogenic liquefied gas distributor 21 is suspended at a predetermined height behind the four transport trucks 40 by the crane 14, and the four injection hoses 22 connected to the four discharge ports are connected to the respective containers 41. .

  In the embodiment, for example, when filling low temperature liquefied gas into a total of seven containers 41, first, four containers 41 are connected as shown in FIG. In the second filling, three containers 41 are connected. As will be described later with reference to FIG. 3, the low-temperature liquefied gas distribution unit 20 includes an opening / closing valve for each discharge port. By closing only the opening / closing valve of one discharge port, it is possible to selectively fill the three containers 41 simultaneously.

  The transport truck 40 in which the container 41 is filled with the low-temperature liquefied gas can be directly transported to the next destination as it is, or the container 41 can be transferred to a freight car at the nearest station and transported by rail transport. It is also possible to carry out marine transportation by container cargo ship at the cargo port of the city, and it is possible to develop various forms of transportation according to the traffic situation of the receiving place.

FIG. 3 is a diagram schematically illustrating the structure of a cryogenic liquefied gas distribution unit according to an embodiment of the present invention.
Since the low-temperature liquefied gas distribution unit 20 is detachably attached to one end of the hose 13, the low-temperature liquefied gas distributor 21 has an end for connection to the hose 13 at the low-temperature liquefied gas inlet. FIG. 3 shows a configuration including a flange so that it can be fixed to the inflow port with a bolt and nut in accordance with the flange provided at the end of the hose 13. However, the configuration is not limited to this configuration as long as it is detachable. In the case of connection, an end portion for connection that matches the shape of the end portion of the hose 13 is provided so that a male screw that matches the internal screw provided at the end portion of the hose 13 is provided.

  The low-temperature liquefied gas distributor 21 has a flow path structure including a flow path that branches into a plurality. The low-temperature liquefied gas distributor 21 shown in FIG. 3 has four branches, and has four outlets. Each of the four discharge ports is provided with an opening / closing valve 23, and the discharge port for discharging the low-temperature liquefied gas can be selected depending on which opening / closing valve 23 is opened.

  The on-off valve 23 may be manually operated or electrically operated. However, in the case of electric operation, power is supplied to the on-off valve 23 from a power supply means such as a storage battery provided in the floating cryogenic liquefied gas filling facility 10 via a power supply line wired along the hose 13. Supply. In the case of electric operation, the opening / closing control of the opening / closing valve 23 is performed wirelessly or by wire.

  In one embodiment, an indicator lamp is provided in the vicinity of each on-off valve 23 or at a position where the correspondence with each on-off valve 23 is known so that the open / close state of the on-off valve 23 can be visually confirmed. Depending on whether the lamp is turned on or off, or by changing the color of the lamp to be displayed, whether the lamp is open or closed is displayed. Thereby, even if the opening / closing valve 23 of the discharge port not connected to the container 41 is opened by mistake, it can be easily confirmed and can be corrected to the closed state before the filling is started.

A flow rate detecting means 24 is further provided on the downstream side of each on-off valve 23. Depending on the shape of the flow path and how the on / off valve 23 is selected, the discharge flow rate of the low-temperature liquefied gas from the respective discharge ports may vary. If the amount of outflow is different, even if it is filled at the same time, the filling time differs between the containers 41, which may lead to a reduction in work efficiency. Therefore, in one embodiment, the flow rate detection means 24 detects the discharge flow rate of the low-temperature liquefied gas from each discharge port, and individually, based on the result, the discharge flow rate of the low-temperature liquefied gas from each discharge port becomes equal. The valve opening degree of the on-off valve 23 is adjusted.
The adjustment of the discharge flow rate of the low temperature liquefied gas may be provided with a flow rate adjusting means different from the on-off valve 23. In that case, the discharge flow rate of the low temperature liquefied gas is adjusted by the flow rate adjusting means based on the discharge flow rate detected by the flow rate detecting means 24. adjust.

  Like the hose 13, the injection hose 22 is a flexible hose. The injection hose 22 does not need to be attached and detached as often as the hose 13, but it may be replaced when it deteriorates, so a low temperature liquefied gas distributor such as a flange shape that can be fixed with bolts and nuts at the end is used. Attached to 21 in a detachable manner.

  A hook 25 is provided on the upper surface of the low-temperature liquefied gas distributor 21, and when filling with the low-temperature liquefied gas, the hook 25 is lifted by the crane 14 as shown in FIG. It can be set as the arrangement | positioning which is easy to perform filling operation by hold | maintaining. Further, when the hose 13 is detached after the filling is completed, the height difference is adjusted so that the LNG is completely transferred to the barge tank 12 so that the LNG does not remain in the hose.

  Although the low-temperature liquefied gas distribution unit 20 having four discharge ports is illustrated in FIG. 3, the number of discharge ports is not limited to four. There may be more or less than four. Moreover, although the structure which has arrange | positioned the discharge port in 1 horizontal row was illustrated in FIG. 3, you may arrange | position a several discharge port at equal intervals so that an outflow characteristic may become equal by embodiment. At this time, when the direction of the discharge port is installed obliquely from the inlet, the low-temperature liquefied gas distributor 21 has a funnel shape, and when the direction of the discharge port is arranged radially from the inlet, the low-temperature liquefied gas is provided. The distributor 21 has a disk shape.

FIG. 4 is a flowchart for explaining a low-temperature liquefied gas delivery method according to an embodiment of the present invention.
Referring to FIG. 4, as a stage of accepting the low-temperature liquefied gas to the floating type low-temperature liquefied gas filling facility 10, the low-temperature liquefaction from the liquefied gas supply facility 1 to the barge tank 12 of the floating-type low-temperature liquefied gas filling facility 10 Gas is transferred (step S400 to step S420).

  First, in step S400, the floating-type low-temperature liquefied gas filling equipment 10 is moored with the buffer 18 sandwiched between the liquefied gas supply equipment 1. In the embodiment, the buffer 18 is permanently installed in the liquefied gas supply facility 1 in accordance with the mooring position of the floating low temperature liquefied gas filling facility 10. For this reason, it is not necessary to prepare the buffer body 18 every time the low temperature liquefied gas is received in the floating type low temperature liquefied gas filling equipment 10. Mooring of the floating body type low-temperature liquefied gas filling equipment 10 can be steadily performed by connecting a plurality of places before and after the liquefied gas supply equipment 1 with a mooring measure 19.

  Next, in step S405, the liquefied gas supply facility 1 and the hose 13 of the floating low temperature liquefied gas filling facility 10 are connected. At this time, the crane 14 provided in the floating cryogenic liquefied gas filling facility 10 is used to lift and connect the hose 13 and hold the hose 13 at a predetermined height during the low temperature liquefied gas transfer, thereby delivering the low temperature liquefied gas. It becomes possible to receive the low-temperature liquefied gas directly even from a large ship that does not have the crane 14 or the hose 13.

  In step S410, the transfer of the low-temperature liquefied gas from the liquefied gas supply facility 1 to the barge tank 12 of the floating low-temperature liquefied gas filling facility 10 is started. When the necessary amount of the low-temperature liquefied gas is transferred in step S415 and the transfer of the low-temperature liquefied gas is completed, the hose 13 of the floating cryogenic liquefied gas filling facility 10 is disconnected from the liquefied gas supply facility 1 in step S420. The separated hose 13 is collected in the floating cryogenic liquefied gas filling facility 10 using the crane 14, and finally the mooring measure 19 is removed to complete the cryogenic liquefied gas receiving stage.

Next, as a transporting stage, the floating cryogenic liquefied gas filling facility 10 is moved to a port where the cryogenic liquefied gas is delivered (steps S425 and S430).
In step S425, the floating cryogenic liquefied gas filling facility 10 is moved toward the standby position of the transport truck 40 in the harbor as a delivery destination. In the embodiment, the floating cryogenic liquefied gas filling facility 10 does not have power means for self-navigation and is towed and moved by the tugboat 30. Therefore, a tow rope hook for hanging the tow rope 31 is provided at the front and rear. As a result, the plurality of floating cryogenic liquefied gas filling facilities 10 are connected in a vertical row by the tow rope 31 and the top is towed by the tug boat 30 to move the plurality of floating cryogenic liquefied gas filling facilities 10 at once. It becomes possible.

In another embodiment, the floating cryogenic liquefied gas filling facility 10 includes power means for self-navigation and moves by itself without using the tug boat 30 as a delivery destination.
Whether the ship is towed by the tugboat 30 or moved by itself, upon arrival at the delivery destination port, the floating cryogenic liquefied gas filling facility 10 contacts the standby position of the transport truck 40 in the port (step S430).

Thereafter, the filling means 15 proceeds from the barge tank 12 via the hose 13 to the filling stage (step S435 to step S470) in which the container 41 arranged on the ground transportation truck 40 is directly filled with the low-temperature liquefied gas.
First, in step S435, it is determined whether or not a plurality of containers 41 are filled at the same time. If there are a plurality of containers 41 filled simultaneously, the cryogenic liquefied gas distribution unit 20 is connected to one end of the hose 13 in step S440.

Next, in step S445, the required number of the plurality of injection hoses 22 of the low-temperature liquefied gas distribution unit 20 is connected to the containers 41 on the truck in the harbor in accordance with the number of containers 41 that are simultaneously filled with the low-temperature liquefied gas. Although the low-temperature liquefied gas distribution unit 20 has a plurality of outlets, the opening and closing valve 23 can be switched for each outlet, so that the number of containers 41 to be filled simultaneously is greater than the number of outlets of the low-temperature liquefied gas distribution unit 20. At least, the on-off valve 23 of the discharge port that is not used can be closed, and simultaneous filling of the number of connected containers 41 is possible.
In step S455, the on-off valve 23 of the low-temperature liquefied gas distribution unit 20 is opened in accordance with the container 41 to be filled.

  In one embodiment, the end of the injection hose 22 on the connection side to the container 41 is provided with a sensor for detecting the connection with the container 41 or a switch such as a push switch that operates when the connection with the container 41 is performed. If the connection to is not performed, the opening / closing valve 23 of the discharge port to which the injection hose 22 is connected is not opened. Thereby, it is possible to prevent the low temperature liquefied gas from being accidentally discharged to the injection hose 22 not connected to the container 41.

When the above preparation for filling is completed, the filling means 15 of the floating low-temperature liquefied gas filling equipment 10 is operated in step S460 to fill the container 41 with the low-temperature liquefied gas.
When the parking space of the transport truck 40 is narrow and the number of containers 41 that can be filled at the same time is limited, or the amount of low-temperature liquefied gas demand is large, even the single simultaneous filling by the low-temperature liquefied gas distribution unit 20 does not meet the demand amount. When multiple fillings are necessary, such as when the first filling is completed, the on-off valve 23 is closed once, the transportation truck 40 is replaced and connected to a new container 41, and then filling in steps S435 to S460 is performed. Repeat the work.

  Furthermore, when adjusting the discharge flow rate of the low-temperature liquefied gas of the low-temperature liquefied gas using the flow rate detection means 24, the flow rate detection means 24 opens the respective discharge ports at the stage where charging of the low-temperature liquefied gas is started in step S460. The discharge flow rate of the flowing low-temperature liquefied gas is detected, and the discharge flow rate of the low-temperature liquefied gas is individually adjusted by the flow rate adjusting means provided separately from the opening / closing valve 23 or the opening / closing valve 23 based on the result. This is because the floating type low-temperature liquefied gas filling equipment 10 is provided with a control device for remotely controlling the on-off valve 23 or the flow rate adjusting means, and the output from the flow rate detecting means 24 is input to the control device by wire or wirelessly. This is realized by outputting a control signal based on the input value to the on-off valve 23 or the flow rate adjusting means by wire or wirelessly.

  If there is only one container 41 to be returned to step S435, distribution of the low-temperature liquefied gas is not necessary. Therefore, after connecting the hose 13 directly to the container 41 without connecting the low-temperature liquefied gas distribution unit 20 to the hose 13 in step S450. Then, the process proceeds to step S460, and the filling means 15 of the floating-type low-temperature liquefied gas filling equipment 10 is operated to fill the container 41 with the low-temperature liquefied gas.

  When the low-temperature liquefied gas once filled in the barge tank 12 is continuously delivered to a plurality of destinations, etc., when the low-temperature liquefied gas distribution unit 20 is connected to the tip of the hose 13 at the previous delivery location, the filling is performed. In the next delivery place, the operation may start from a state in which the cryogenic liquefied gas distribution unit 20 is connected to the tip of the hose 13 in advance. When filling a single container 41 in such a situation, the low-temperature liquefied gas distribution unit 20 may be removed and the hose 13 may be directly connected to the container 41, or the low-temperature liquefied gas distribution unit 20 may be left connected. Alternatively, the injection hose 22 may be selectively connected, and the on-off valve 23 connected to the connected injection hose 22 may be opened to fill the low-temperature liquefied gas.

  Further, if the low-temperature liquefied gas is often filled and delivered to a plurality of containers 41 in many cases, the hose 13 receives the low-temperature liquefied gas from the liquefied gas supply facility 1 and fills the container 41. It is good also as another structure of the hose 13-1 only for reception, and the hose 13-2 only for filling with the low-temperature liquefied gas distribution unit 20 connected, without using for common use. In this case, the operations in steps S435, S440, and S450 in FIG. 4 are not necessary.

  When the filling of the low-temperature liquefied gas into the container 41 that needs to be filled is completed in step S465, the connection of the hose 13 or the injection hose 22 connected to the container 41 is released in step S470, and the floating low-temperature liquefied gas filling equipment 10 is provided. Store. Thereafter, filling is continued toward the next delivery destination, or the liquefied gas supply facility 1 is returned to prepare for the next delivery, and the above-described operations from the low-temperature liquefied gas receiving stage are repeated.

  Note that when the empty container 41 is filled with the low-temperature liquefied gas, the temperature in the container 41 is not normally cooled down to the temperature of the low-temperature liquefied gas, so a part of the low-temperature liquefied gas is added to the residual gas such as methane gas inside the container 41. The gas in the container 41 temporarily rises in the initial stage of filling. As the filling of the low-temperature liquefied gas proceeds and the temperature inside the container 41 decreases, the pressure in the container 41 also decreases accordingly.

  As the low temperature liquefied gas is filled, a filling method that suppresses the influence of the pressure increase in the container 41 by returning the gas in the container 41 to the barge tank 12 on the supply side can be taken. In order to recover, the component composition of the low-temperature liquefied gas finally filled may change.

  On the other hand, if the gas in the container 41 is cooled and dissolved in the low-temperature liquefied gas, the pressure increase in the container 41 can be suppressed. According to this method, since the gas component is not recovered in the barge tank 12, the component configuration of the low-temperature liquefied gas to be filled does not change. Moreover, it is not necessary to provide a return hose dedicated to gas.

  As mentioned above, although embodiment of this invention was described in detail, referring drawings, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the technical scope of this invention, it changes variously. Is possible.

DESCRIPTION OF SYMBOLS 1 Liquefied gas supply equipment 10 Floating body type low temperature liquefied gas filling equipment 11 Floating body 12 Barge tank 13 Hose 14 Crane 15 Filling means 16, 17 Hose support 18 Buffer body 19 Mooring measures 20 Low temperature liquefied gas distribution unit 21 Low temperature liquefied gas distributor 22 Injection hose 23 On-off valve 24 Flow rate detection means 25 Hook 30 Tug boat 31 Towing rope 40 Transport truck 41 Container 42 Towing vehicle

Claims (7)

A floating low-temperature liquefied gas filling facility that delivers low-temperature liquefied gas from the sea to the land,
A barge tank for temporarily filling and storing the low-temperature liquefied gas;
A hose for transferring a low-temperature liquefied gas from a liquefied gas supply facility to the barge tank, and transferring the low-temperature liquefied gas from the barge tank to a container disposed on a ground transportation truck;
A cryogenic liquefied gas distribution unit detachably attached to one end of the hose;
A crane for holding the hose at a predetermined height during low-temperature liquefied gas transfer;
Filling means for filling the container with a low-temperature liquefied gas,
The low-temperature liquefied gas distribution unit selectively selects a low-temperature liquefied gas inlet connected to one end of the hose, a plurality of outlets for simultaneously discharging the low-temperature liquefied gas to the plurality of containers, and opening and closing of the respective outlets. An opening / closing valve to be connected to the container, a plurality of injection hoses having one end connected to the discharge port and the other end connected to the injection port of the container, and a hook for lifting by the crane ,
The low-temperature liquefied gas distribution unit is attached to one end of the hose connected to the filling means when simultaneously filling a plurality of containers, and is used by being lifted to a predetermined height by the crane,
The low-temperature liquefied gas distribution unit has a funnel shape or a disk shape, and the plurality of discharge ports are arranged at equal intervals so that the outflow characteristics are uniform. The low-temperature liquefied gas discharge flow rate is adjusted to be equal,
The injection hose includes a sensor that detects connection with the container at the end of the connection side to the container or a switch that operates when connection with the container is performed,
The floating low temperature liquefied gas filling equipment, wherein the opening / closing valve of the discharge port to which the injection hose is connected is configured not to be opened unless the injection hose is connected to the container. .
  The low-temperature liquefied gas distribution unit includes flow rate detecting means for individually detecting the flow rate of the low-temperature liquefied gas discharged from each discharge port, and is separate from the on-off valve or the on-off valve based on the detected low-temperature liquefied gas flow rate. The floating low-temperature liquefied gas filling equipment according to claim 1, wherein the discharge flow rate of the low-temperature liquefied gas can be individually adjusted by a flow rate adjusting means provided individually. The hose low temperature liquefied gas from the barge tank by said filling means, floating low temperature according to claim 2, characterized in that it is transferred directly to the low-temperature liquefied gas distribution one or more of the containers through the unit Liquefied gas filling equipment.   The low-temperature liquefied gas is liquefied natural gas (LNG), the liquefied gas supply facility is a liquefied natural gas ship or a floating liquefied natural gas storage regasification facility (FSRU), and the filling means is a pressurized evaporator or The floating low-temperature liquefied gas filling facility according to any one of claims 1 to 3, wherein the facility is a pump. A low-temperature liquefied gas delivery method using the floating-type low-temperature liquefied gas filling facility according to claim 1,
After suspending the floating low-temperature liquefied gas filling equipment in the liquefied gas supply equipment, and receiving the low-temperature liquefied gas from the liquefied gas supply equipment to the barge tank of the floating low-temperature liquefied gas filling equipment via a hose;
A transport stage for moving the floating cryogenic liquefied gas filling facility to the delivery location of the cryogenic liquefied gas;
Filling a cryogenic liquefied gas directly into a container disposed on a ground transportation truck from the barge tank via the hose by a filling means, and
When a plurality of containers are filled with low-temperature liquefied gas at the same time, the method further comprises a connection step of connecting a low-temperature liquefied gas distribution unit having a plurality of discharge ports at one end on the discharge side of the hose before the filling step. Low temperature liquefied gas delivery method. The low-temperature liquefied gas distribution unit selectively selects a low-temperature liquefied gas inlet connected to one end of the hose, a plurality of outlets for simultaneously discharging the low-temperature liquefied gas to the plurality of containers, and opening and closing of the respective outlets. And a flow rate detecting means for individually detecting the flow rate of the low-temperature liquefied gas discharged from each discharge port,
The filling step is a selection step of selectively opening necessary opening / closing valves according to the number of containers to be filled at the same time;
An adjustment step of individually adjusting the discharge flow rate of the low-temperature liquefied gas by the flow rate adjusting means provided separately from the on-off valve or the on-off valve based on the flow rate of the low-temperature liquefied gas detected by the flow rate detecting means. The low-temperature liquefied gas delivery method according to claim 5 characterized by things. The low-temperature liquefied gas is liquefied natural gas (LNG), the liquefied gas supply facility is a liquefied natural gas ship or a floating liquefied natural gas storage regasification facility (FSRU), and the filling means is a pressurized evaporator or It is a pump, The low-temperature liquefied gas delivery method of Claim 5 or 6 characterized by the above-mentioned.

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