JP2020147333A - Handling facility of liquefied cryogenic fluid - Google Patents

Abstract

To effectively and quickly execute handling of LNG to a marine vessel.SOLUTION: The handling facility comprises: a fluid conduction pipe that conducts a liquefied cryogenic fluid or a vaporized fluid which is the liquefied cryogenic fluid that has been vaporized, between land side storage parts LT1 and LT2, and a marine vessel side storage part ST; and a flexible fluid conduction part H having on one end an attachment/detachment mechanism QC2 that is freely attachable to/detachable from a connecting end of the fluid conduction pipe, and the other end being connected to the marine vessel side storage part to allow conduction of the liquefied cryogenic fluid. Provided as fluid conduction pipes are: a liquefied cryogenic fluid conduction path that conducts the liquefied cryogenic fluid from the land side storage parts LT1 and LT2; and a liquid extraction piping communicated and connected to the liquefied cryogenic fluid conduction path via liquid extraction opening/closing valves DV1 to DV4 in a state positioned below the liquefied cryogenic fluid conduction path in a vertical direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cargo handling facility for a liquefied low-temperature fluid that handles the liquefied low-temperature fluid with a ship that transports the liquefied low-temperature fluid on water.

As a cargo handling facility that handles LNG as a liquefied low-temperature fluid, as shown in Patent Document 1, LNG pumped by a pressure pump from an LNG storage tank provided on land is pumped onto water via a fluid flow pipe or the like. A facility for pumping to a ship-side LNG storage unit provided on a ship is known.

JP-A-2017-105507

Regarding the cargo handling equipment for liquefied low-temperature fluids as described above, the demand for natural gas fuel is increasing as a means of reducing nitrogen oxides and carbon dioxide in exhaust gas due to exhaust gas regulations for internal combustion engines, etc. There is a need for a technology that can effectively and quickly carry out cargo handling of LNG, and there is room for development.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a cargo handling facility for a liquefied low-temperature fluid capable of effectively and quickly carrying out loading and unloading of LNG to a ship.

The cargo handling equipment for liquefied low-temperature fluid to achieve the above objectives
It is a cargo handling facility for liquefied low-temperature fluid that handles liquefied low-temperature fluid with a ship that transports liquefied low-temperature fluid on water.
A pumping means for pumping the liquefied low-temperature fluid from the land-side storage unit that stores the liquefied low-temperature fluid on land to the ship-side storage unit that stores the liquefied low-temperature fluid on the ship, and the land-side storage unit and the ship-side storage unit. A fluid flow pipe through which a liquefied low-temperature fluid or a vaporized fluid vaporized by the liquefied low-temperature fluid flows, and a detachable attachment / detachment mechanism at one end at the connection end of the fluid flow pipe, and the other end It is equipped with a flexible fluid flow section that can be connected to the storage section on the ship side to allow liquefied low-temperature fluid to flow.
As the fluid flow pipe,
The liquefied low-temperature fluid flow path through which the liquefied low-temperature fluid flows from the land-side storage section,
The point is that the liquefied low-temperature fluid passage is provided with a liquid drain pipe that is connected to the liquefied low-temperature fluid passage through a liquid drain on-off valve in a state of being located downward in the vertical direction.

According to the above-mentioned characteristic configuration, the liquefied low-temperature fluid passage is provided with a liquid drain pipe that is continuously connected to the liquefied low-temperature fluid passage via a liquid drain on-off valve while being located below in the vertical direction. Even when the liquefied low-temperature fluid flow path has a relatively complicated circuit configuration, the liquefied low-temperature fluid staying in the liquefied low-temperature fluid flow path is drained before the cargo handling of the liquefied low-temperature fluid is completed. The liquid can be quickly drained to effectively and quickly carry out the cargo handling of the liquefied low temperature fluid.

Further features of the cargo handling equipment for liquefied low-temperature fluids
The liquid draining pipe is arranged so that the downstream side is vertically downward from the upstream side in the liquid draining direction as the flow direction when the liquefied low temperature fluid is discharged.

According to the above-mentioned characteristic configuration, since the liquid draining pipe is provided so that the downstream side is directed downward from the upstream side in the liquid draining direction as the flow direction when the liquefied low temperature fluid is discharged, the fluid flows into the liquid draining pipe. The liquefied low-temperature fluid can be flowed down from the upstream side to the downstream side by its own weight, and can be filled with the liquefied low-temperature fluid in order from the downstream side of the drainage pipe. Can reliably collect fluid.

Further features of the cargo handling equipment for liquefied low-temperature fluids
The upstream end of the drainage pipe in the drainage direction is connected to a pressure feed gas passage through which the pressure feed gas flows.
The liquefied low-temperature fluid flow is a one-stroke flow path that guides the liquefied low-temperature fluid of the drainage pipe, which is pumped by the pressure-feed gas flowing from the pumped gas passage, to the land-side storage unit by a one-stroke flow path. It is a point composed of roads.

According to the above-mentioned characteristic configuration, the liquefied low-temperature fluid stored in the drainage pipe is pumped by the pumping gas and guided to the land-side storage portion, so that the liquefied low-temperature fluid is taken out from the liquid drainage pipe by its own weight more quickly. Processing becomes possible.
In the present specification, the one-stroke calligraphy flow path means a flow path capable of pumping a liquefied low-temperature fluid from the upstream side to the downstream side with one flow path.

In the cargo handling equipment for the liquefied low-temperature fluid, it is preferable that the pumping gas passage is a purge gas passage for passing the purge gas from the purge gas storage portion for storing the purge gas.

Further features of the cargo handling equipment for liquefied low-temperature fluids
It is provided with at least one moving body having the pumping means and the fluid flow pipe and capable of moving in a state where the connection between the ship and the land side storage portion is disconnected.
The point is that the drainage pipe is provided independently of each of the moving bodies.

As described above, by using the pumping means and the fluid flow pipe as moving bodies and configuring them so that they can move in a state where the connection with the ship and the land side storage section is disconnected, for example, a specific port where cargo handling equipment is already installed. It is possible to carry out cargo handling of ships in various places.
In such a configuration, a configuration in which liquefied low-temperature fluid is supplied from a plurality of tank trucks as a land-side storage unit and a plurality of moving bodies that receive them and guide them to a ship can be considered. By independently providing the liquid draining pipe for each moving body, it is possible to realize a cargo handling facility for liquefied low-temperature fluid with a simple configuration in which the liquid draining pipes of the moving body are not connected to each other.
In particular, it is considered practically effective to provide an inclination in the liquid draining direction for the liquid draining pipe, but in such a configuration having an inclination, it is relatively difficult to connect different liquid draining pipes of different moving bodies. .. By providing the drainage pipe independently for each moving body as in the above-mentioned feature configuration, the drainage pipe can be effectively operated without causing such a connection problem.

Further features of the cargo handling equipment for liquefied low-temperature fluids
With a plurality of the moving bodies
The liquefied low-temperature fluid passage is configured to allow the liquefied low-temperature fluid from each of the plurality of land-side storage portions to flow, and the liquefied low-temperature fluid flowing through the liquefied low-temperature fluid passage merges. Equipped with a flow path
The piping capacity of the drainage pipe is the flexible fluid flow between the land-side storage section and the ship-side storage section at the end of the liquid introduction operation for introducing the liquefied low-temperature fluid into the ship-side storage section. The point is that the capacity is such that the entire amount of the liquefied low-temperature fluid existing inside all the flow paths including the unit, the liquefied low-temperature fluid flow path, and the merging flow path can be stored.

As shown in the above-mentioned characteristic configuration, the cargo handling facility for the liquefied low-temperature fluid of the present invention can quickly load the liquefied low-temperature fluid from the land-side storage section such as a plurality of tank trucks to the ship-side storage section, and after the cargo handling is completed. By moving a plurality of moving bodies and a plurality of land-side storage units, the cargo handling equipment can be removed or relocated to a cargo handling location where other vessels are stopped.
In such a configuration, the flexible liquid flow path for guiding the liquefied low-temperature fluid, the liquefied low-temperature fluid flow path, and the confluence flow path may have a complicated circuit configuration. Since all of the liquefied low-temperature fluid in the process of introduction can be quickly received in the drainage pipe and the cargo handling speed can be improved, the relocation of the cargo handling equipment can be carried out more efficiently and effectively.

Schematic configuration diagram of cargo handling equipment for liquefied low-temperature fluid according to the first embodiment The figure which shows the flow when the air purge operation which concerns on 1st Embodiment is executed The figure which shows the flow when the gas introduction operation which concerns on 1st Embodiment is executed The figure which shows the flow when the liquid introduction operation which concerns on 1st Embodiment is executed The figure which shows the flow when the liquid draining operation which concerns on 1st Embodiment is executed. The figure which shows the flow when the purge operation which concerns on 1st Embodiment is executed Side view showing the first liquid draining pipe NL0a and the one mixing flow path MF1 according to the first embodiment, with the vertical direction of the paper surface as the vertical direction. A schematic configuration diagram of a cargo handling facility for a liquefied low-temperature fluid according to the second embodiment, and a diagram showing a flow when a precooling operation is executed. A schematic configuration diagram of a cargo handling facility for a liquefied low-temperature fluid according to a third embodiment, and a diagram showing a flow when a mini-flow operation is being executed. A schematic configuration diagram of a cargo handling facility for a liquefied low-temperature fluid according to a fourth embodiment, and a diagram showing a flow when a gas introduction operation is being executed. The figure which shows the flow when the discharge pressure change operation which concerns on 4th Embodiment is executed. The figure which shows the flow when the discharge destination change operation and the liquid introduction operation which concerns on 4th Embodiment are executed. The figure which shows the flow when the 1st residual liquid processing operation which concerns on 4th Embodiment is executed. The figure which shows the flow when the 2nd residual liquid processing operation which concerns on 4th Embodiment is executed. The figure which shows the flow when the 3rd residual liquid processing operation which concerns on 4th Embodiment is executed.

The cargo handling facility 100 for a liquefied low-temperature fluid (for example, liquefied natural gas: hereinafter abbreviated as LNG) according to an embodiment of the present invention relates to a cargo handling facility 100 capable of effectively and quickly carrying out loading and unloading of LNG to a ship.

[First Embodiment]
Hereinafter, the cargo handling facility 100 for the liquefied low-temperature fluid according to the first embodiment will be described with reference to FIGS. 1 to 6.
As shown in FIG. 1, the cargo handling facility 100 for the liquefied low-temperature fluid according to the embodiment is a cargo handling facility for handling the liquefied low-temperature fluid with a ship S such as an LNG tanker that transports the liquefied low-temperature fluid on water. In particular, a pump (of the pumping means) that pumps the liquefied low-temperature fluid from the first and second land-side storage units LT1 and LT2 that store the liquefied low-temperature fluid on land to the ship-side storage unit ST that stores the liquefied low-temperature fluid on the ship S. An example) and a fluid flow pipe through which a liquefied low-temperature fluid or a vaporized fluid (for example, natural gas: hereinafter abbreviated as NT) is vaporized between the land-side storage section and the ship-side storage section ST. It is provided with at least one moving fluid which can move in a state where the connection with the ship S and the land side storage unit is disconnected.
In this specification, the land side storage unit may be referred to as the upstream side and the ship side storage unit ST may be referred to as the downstream side.

Here, the moving body has a detachable first quick coupler QC1 (an example of an attachment / detachment mechanism) at one end and a second quick coupler QC2 (an example of an attachment / detachment mechanism) at the other end at the connection end of the fluid communication pipe. Is provided with at least one parent moving body PM (a configuration surrounded by a chain line in FIG. 1) having a hose H capable of allowing a liquefied low-temperature fluid to flow by communicating with the storage unit ST on the ship side. The parent moving body PM shown in FIG. 1 is provided with an emergency shutoff valve EV that shuts off the flow of fluid between the ship S and the cargo handling facility 100 in the fluid flow pipe, and when the ship S suddenly moves. An emergency release device EW that separates the ship S from the cargo handling equipment 100 is provided for the hose H (an example of a flexible fluid passage portion). Further, as the parent moving body PM, a control device C (an example of a control unit) that controls the open / closed state of the pumps P1 and P2 and various valve bodies described later in order to control the flow state of the entire fluid of the cargo handling facility 100. ) Is provided. The first quick coupler QC1 and the second quick coupler QC2 as the attachment / detachment mechanism may substitute the configuration of the flange or the like.
Further, in the cargo handling facility 100 shown in FIG. 1, in addition to the one parent moving body PM, one child moving body CM (a configuration surrounded by a two-dot chain line in FIG. 1) is provided, and although not shown, the illustration is omitted. Both the parent moving body PM and the child moving body CM are configured to be movable in a form in which each component device is internally installed inside the container. In addition, each moving body is equipped with a handling crane that is responsible for the movement and installation of various devices in the container and the movement and installation of the fluid flow pipe between the land-side storage and the moving body, as well as methane. A gas detector is provided to detect the gas concentration of the above.
In addition, the parent moving body PM includes a gas storage unit for storing purge gas (for example, nitrogen and methane) for purging the fluid flow pipe, and electric power used for driving various devices provided in the moving body. Various types of generators that generate power, and a radiation tower that dissipates low-temperature fluid such as excess natural gas generated during cargo handling and dissipates low-temperature fluid when the internal pressure of the fluid flow pipe exceeds the permissible value. It is equipped with an accumulator that accumulates the pressure to drive the valve body. Incidentally, with respect to the various configurations provided only in the parent moving body PM described above, the configurations provided in each of the child moving body CMs may be adopted.

The first land-side storage section LT1 includes a first liquid inflow / out section LE1 having a fifth flange F5 as an inflow / out end and a tenth on-off valve V10 to inflow and out the liquid, and also serves as an inflow / out end. It has a sixth flange F6 and an eleventh on-off valve V11, and includes a first gas inflow / outflow portion GE1 for inflowing and outflowing gas.
The parent moving body PM communicates with the first liquid inflow / outflow portion LE1 at one end via the fifth flange F5, and has a first liquid passage LF1 having a sixth on-off valve V6 at the other end, and a first liquid passage LF1 at one end. It is provided with a first gas flow path GF1 having a seventh on-off valve V7 at the other end while communicating with the first gas inflow / outflow portion GE1 via a 6-flange F6, and both are connected at the other end side. It is continuously connected to the first mixing flow path MF1. Inverter-type first pump P1 and second mixing flow path MF2 that can pump liquefied low-temperature fluid from the upstream side to the downstream side and adjust the rotation rate thereof flow through the first mixing flow path MF1 from the upstream side. The first flow rate adjusting valve RV1 for adjusting the flow rate of the fluid and the first check valve CV1 for prohibiting the backflow from the downstream side to the upstream side of the fluid are provided in the order described, and the downstream end thereof is another moving body. It is connected to the confluence flow path JTL through which the fluid from the above flows. The first mixing flow path MF1 is provided with a first bypass flow path MF1a that bypasses the first check valve CV1, and the first bypass flow path MF1a is provided with a fourth on-off valve V4. ing.

The second land-side storage unit LT2 and the child moving body CM have the same configuration as the above-mentioned first land-side storage unit LT1 and the parent moving body PM with respect to the flow path through which the liquefied low-temperature fluid and the low-temperature gas flow. ing.
That is, the second land-side storage section LT2 includes a second liquid inflow / out section LE2 having a seventh flange F7 and a twelfth on-off valve V12 as inflow / out ends and inflowing / out of the liquid, and the inflow / out end. The second gas inflow / out section GE2 is provided with the eighth flange F8 and the thirteenth on-off valve V13.
The child moving body CM communicates with the second liquid inflow / outflow portion LE2 at one end via the seventh flange F7, and has a second liquid passage LF2 having an eighth on-off valve V8 at the other end, and a second liquid passage LF2 at one end. It is provided with a second gas flow path GF2 having a ninth on-off valve V9 at the other end while being communicatively connected to the second gas inflow / outflow portion GE2 via an eight flange F8, and both are connected at the other end side. It is continuously connected to the second mixing flow path MF2. Inverter-type second pump P2 and second mixing flow path MF2 that can pump liquefied low-temperature fluid from the upstream side to the downstream side and adjust the rotation rate thereof flow through the second mixing flow path MF2 from the upstream side. A second flow rate adjusting valve RV2 for adjusting the flow rate of the fluid and a second check valve CV2 for prohibiting backflow from the downstream side to the upstream side of the fluid are provided in the order described, and the downstream end thereof is another moving body. It is connected to the confluence flow path JTL through which the fluid from the above flows. The second mixing flow path MF2 is provided with a second bypass flow path MF2a that bypasses the second check valve CV2, and the second bypass flow path MF2a is provided with a fifth on-off valve V5. ing.

The merging flow path JTL is a flow path commonly formed for a plurality of moving bodies, and adopts a configuration in which the flow paths are communicated and connected between the moving bodies via flanges, and the parent moving body PM. And the child moving body CM are communicated with each other via the first flange F1. A third flange F3 is provided on the upstream side of the merging flow path JTL so that the merging flow path JTL of other moving bodies can be communicated and connected, and an emergency shutoff valve EV is provided on the downstream side of the merging flow path JTL. A first quick coupler QC1 capable of quickly connecting to the hose H is provided at the downstream end thereof.
The hose H is provided with an emergency release device EW, and its downstream end is connected to the ship side flow path SL via the second quick coupler QC2.

The ship-side flow path SL is provided with a third on-off valve V3 at its upstream end, and on its downstream side, a ship-side gas flow path SLa that mainly allows low-temperature gas such as natural gas to flow, and mainly LNG. The ship-side liquid passage SLb through which the liquefied low-temperature fluid such as the above flows is provided in parallel. The downstream ends of both are communicated with the ship side storage unit ST, and the first on-off valve V1 is connected to the ship-side gas passage SLa and the second on-off valve V2 is connected to the ship-side liquid passage SLb. It is provided. In some cases, the ship-side gas passage SLa may pass a liquefied low-temperature fluid.

The fluid flow pipe described so far is provided with a plurality of diffusion valves that dissipate gas to the outside when the inside is purged.
To add an explanation, the first radiation valve HV1 is provided on the downstream side of the emergency shutoff valve EV and the second radiation valve HV2 is provided on the upstream side of the confluence flow path JTL. Further, a third release valve HV3 is provided on the upstream side of the sixth on-off valve V6 of the first liquid flow path LF1, and a fifth release valve HV5 is provided on the upstream side of the eighth on-off valve V8 of the second liquid flow path LF2. A fourth release valve HV4 is provided on the upstream side of the seventh on-off valve V7 of the first gas passage GF1, and a sixth release valve HV6 is provided on the upstream side of the ninth on-off valve V9 of the second gas passage GF2. Has been done.

Further, a purge gas flow path is provided to pass the purge gas for purging the liquefied low-temperature fluid or low-temperature gas staying inside the fluid flow pipe.
Specifically, the main purge gas flow path PL0 communicated with the purge gas storage unit PT, the main purge gas flow path PL0 communicated with each other, and the merging flow path JTL connects the emergency shutoff valve EV and the first dissipation valve EV1. The first purge gas passage PL1 to which one end is connected between them, and the second purge gas passage to which one end is connected to the first purge gas passage PL1 and the other end is connected to the first liquid passage LF1. The third purge gas flow path PL3, one end of which is connected to the first purge gas flow path PL1 and the other end of which is connected to the first gas flow path GF1, the first purge gas flow path PL3. The fourth purge gas passage PL4 is connected to PL1 and the other end is connected to the second liquid passage LF2, one end is connected to the first purge gas passage PL1 and the other end is second. The fifth purge gas flow path PL5 which is communicated with the gas flow path GF2, one end is connected to the first purge gas flow path PL1 and the other end is the first liquid drainage pipe NL0a and the second liquid drainage pipe which will be described later. A sixth purge gas passage PL6 is provided which is continuously connected to NL0b.
Further, the main purge gas passage PL0 has a first purge valve PV1, the first purge gas passage PL1 has a second purge valve PV2, and the second purge gas passage PL2 has a third purge valve PV3. 3 The purge gas passage PL3 has a fourth purge valve PV4, the fourth purge gas passage PL4 has a fifth purge valve PV5, the fifth purge gas passage PL5 has a sixth purge valve PV6, and the sixth purge gas has a sixth purge gas. A ninth a purge valve PV9a is provided between the flow path PL6 and the first liquid drainage pipe NL0a, and a ninth b purge valve PV9b is provided between the sixth purge gas flow path PL6 and the second liquid drainage pipe NL0b. In particular, the second purge valve PV2 is provided near the connection portion between the first purge gas flow path PL1 and the confluence flow path JTL.
Similar to the confluence flow path JTL, the first purge gas flow path PL1 is also a flow path commonly formed for a plurality of moving bodies, and the flow paths are communicated between the moving bodies via flanges. The configuration to connect is adopted. The parent moving body PM and the child moving body CM are communicated with each other via the second flange F2, and the first purge gas passage path PL1 of the other moving body is connected to the fourth flange F4 at the other end. Communication connection is possible.
In this way, the moving body can be increased or decreased and can be exchanged by communicating with the fluid communication pipe of another moving body via the flange or by breaking the communication connection.
Further, in the liquefied low-temperature fluid cargo handling facility 100 according to the embodiment, at least two or more first and second land-side storage units LT1 and LT2 can simultaneously carry out cargo handling of the liquefied low-temperature fluid.

The fluid flow pipe may be composed of a flexible pipe. In particular, the degree of freedom of positioning between the plurality of moving bodies is improved by forming the part between the plurality of moving bodies and the part between the land side storage portion and the moving body from flexible pipes. it can.

Further, as shown in FIG. 1, as the liquefied low-temperature fluid flow path, the first liquid flow path LF1, the first mixing flow path MF1, the second liquid flow path LF2, and the second mixing flow path MF2 are provided. A liquid drain pipe NL0 is provided which is connected to the liquefied low temperature fluid flow path in a state of being located downward in the vertical direction of the liquefied low temperature fluid flow path via the liquid drain opening / closing valves DV1 to DV4.
In the first embodiment, as shown in FIG. 1, the drainage pipe NL0 is provided independently for each of the moving body PM and CM. In the configuration example shown in FIG. 1, in the used state of loading and unloading, all of the first liquid draining pipe NL0a is housed inside the container surrounding the parent moving body PM, and the container surrounding the child moving body CM. All of the second liquid draining pipe NL0b is housed inside.
More specifically, as shown in FIGS. 1 and 7, the first liquid draining pipe NL0a has a first connection portion with the lowermost end of the first mixing flow path MF1 in the vertical direction (Z direction in FIG. 7). It has a liquid draining on-off valve DV1, and the downstream end in the liquid draining direction (the direction indicated by the white arrow in FIG. 1), which is the flow direction when the liquefied low-temperature fluid is drained from the first liquid draining pipe NL0a, is the first. 1 The liquid flow path LF1 is connected to the upstream inlet of the sixth on-off valve V6 via the second liquid drain on-off valve DV2. Further, the second liquid draining pipe NL0b has a third liquid draining on-off valve DV3 at a connection portion with the lowermost end in the vertical direction of the second mixing flow path MF2, and the liquefied low temperature from the second liquid draining pipe NL0b. The downstream end of the fluid in the draining direction (indicated by the white arrow in FIG. 1) is connected to the upstream inlet of the eighth on-off valve V8 of the second liquid passage LF2 via the fourth liquid-draining on-off valve DV4. Has been done.
The first and second drainage pipes NL0a and NL0b are arranged so that the downstream side is vertically downward from the upstream side in the liquid drainage direction (FIG. 7 shows the first liquid drainage pipe NL0a with respect to the vertical direction Z). The installation state is shown). Further, the total piping capacities of the first and second liquid drainage pipes NL0a and NL0b are measured from the first and second land side storage units LT1 and LT2 at the end of the liquid introduction operation for introducing the liquefied low temperature fluid into the ship side storage unit ST. Flexible liquid flow path (for example, hose H, hoses constituting the first and second liquid inflow / out sections LE1 and LE2), liquefied low-temperature fluid flow path, and merging flow path JTL between the side storage section ST. It is the capacity that can store the entire amount of liquefied low-temperature fluid existing inside the hose.

In the embodiment, the confluence flow path JTL is provided above the liquefied low-temperature fluid flow path in the vertical direction. That is, in the cargo handling facility 100 for the liquefied low-temperature fluid according to the embodiment, the liquid drain pipe NL0 is provided on the lower side in the vertical direction with respect to all the flow paths through which the liquefied low-temperature fluid flows.

The upstream end of the first liquid drain pipe NL0a and the second liquid drain pipe NL0b in the liquid drain direction is a sixth purge gas flow path PL6 (pressure feed gas flow path PL6) through which purge gas (an example of pumping gas) flows. It is connected to one example). Further, the liquefied low-temperature fluids of the first and second liquid draining pipes NL0a and NL0b pumped by the pumped gas flowing from the sixth purge gas passage PL6 are sent to the first and second land side storage portions LT1 and LT2 in a single stroke. The one-stroke calligraphy flow path (the flow path indicated by HL in FIG. 1) led by the above is composed of a liquefied low-temperature fluid flow path.
In the embodiment, the one-stroke calligraphy flow path HL means a flow path capable of pumping a liquefied low-temperature fluid from the upstream side to the downstream side with one flow path.

By the way, the cargo handling facility 100 for the liquefied low temperature fluid described so far performs the cargo handling of the liquefied low temperature fluid by sequentially executing each of the following operations. In FIGS. 2 to 6, the thick broken line indicates the flow of gas, and the thick solid line indicates the flow of liquid.
The cargo handling equipment 100 executes a purge operation for purging the air existing inside the fluid flow pipe at the connection stage while the connection state shown in FIG. 1 is maintained. In the purge operation, as shown in FIG. 2, the purge gas blown out from the purge gas storage unit PT passes through all the purge gas passages, the first liquid passage LF1, the second liquid passage LF2, and the second. All the emission valves (1st emission valve HV1, 3rd emission valve HV3, 4th emission valve) led to 1 gas passage GF1, 2nd gas passage GF2 and hose H, except for 2nd emission valve HV2. The purge gas containing air is released to the atmosphere via the HV4, the fifth emission valve HV5, and the sixth emission valve HV6). In the purge operation, all the release valves and all the purge valves except the second release valve HV2 are in the open state, and the other valve bodies are in the closed state.

Next, a gas introduction operation is executed in which a low-temperature gas such as natural gas is introduced into the fluid flow pipe. In the gas introduction operation, as shown in FIG. 3, low-temperature gas is introduced from the ship-side storage unit ST, the ship-side gas passage SLa, the ship-side flow path SL, the hose H, the merging flow path JTL, and the first bypass flow path. MF1a, 2nd bypass flow path MF2a, 1st mixing flow path MF1, 2nd mixing flow path MF2, 1st gas flow path GF1, 2nd gas flow path GF2, 1st gas inflow / outflow part GE1 and 2nd gas It is introduced into the inflow / outflow section GE2. That is, the first on-off valve V1, the third on-off valve V3, the emergency shutoff valve EV, the fourth on-off valve V4, the fifth on-off valve V5, the first flow rate adjusting valve RV1, the second flow rate adjusting valve RV2, and the seventh on-off valve V7. , The 9th on-off valve V9, the 11th on-off valve V11, and the 13th on-off valve V13 are in the open state, and the other valve bodies are in the closed state. When the first pump P1 and the second pump P2 are pumps that do not allow backflow, low-temperature gas is introduced in a form of bypassing the pumps through a bypass flow path (not shown).
Although detailed explanation is omitted, when the internal pressures of the first and second land side storage units LT1 and LT2 are higher than the internal pressure of the ship side storage unit ST, the low temperature gas is the first and second land side storage units. The gas introduction operation introduced from the LT1 and LT2 toward the ship-side storage unit ST is executed.

After that, a liquid introduction operation is executed in which the liquefied low-temperature fluid is discharged from the first and second land-side storage units LT1 and LT2 and received by the ship-side storage unit ST. In the liquid introduction operation, as shown in FIG. 4, liquefied low-temperature fluid is supplied from the first and second land-side storage units LT1 and LT2, the first liquid inflow / outflow part LE1, the second liquid inflow / out part LE2, and the first liquid passage. Via the flow path LF1, the second liquid flow path LF2, the first mixing flow path MF1, the second mixing flow path MF2, the merging flow path JTL, the hose H, the ship side flow path SL, and the ship side liquid flow path SLb. , Introduced to the ship side storage unit ST. That is, the 10th on-off valve V10, the 12th on-off valve V12, the 6th on-off valve V6, the 8th on-off valve V8, the 1st flow rate adjusting valve RV1, the 2nd flow rate adjusting valve RV2, the 1st check valve CV1, and the 2nd check valve. The stop valve CV2, the emergency shutoff valve EV, the third on-off valve V3, and the second on-off valve V2 are in the open state, and the other valve bodies are in the closed state.
In this operation, the liquefied low-temperature fluid is pumped in a form in which the required pressure is pressurized by the first pump P1 and the second pump P2.

When the introduction of the liquefied low-temperature fluid into the ship-side storage section ST is completed, a bleeding operation for draining the liquefied low-temperature fluid existing inside the fluid flow pipe is executed. In the liquid draining operation, as shown in FIG. 5, the liquefied low-temperature fluid stored in the liquefied low-temperature fluid flow path and the confluence flow path JTL flows into the first and second liquid drainage pipes NL0a and NL0b and is stored. .. That is, the dissipation valves HV1 to HV6, the purge valves PV1 to PV8, PV9a, PV9b, the first on-off valve V1, the second on-off valve V2, the tenth on-off valve V10 to the thirteenth on-off valve V13, the second liquid-draining on-off valve DV2, And the 4th liquid draining on-off valve DV4 is closed, the remaining valve body including the 1st liquid draining on-off valve DV1 and the 3rd liquid draining on-off valve DV3 is in the open state, and the liquefied low temperature fluid is put into the 1st and 2nd liquid draining pipes. It flows into NL0a and NL0b.

Finally, a purge operation for purging the insides of the first and second liquid drain pipes NL0a and NL0b using the purge gas stored in the purge gas storage unit PT while maintaining the open / closed state of the valve body as shown in FIG. To execute. The liquefied low-temperature fluid inside the first and second liquid drain pipes NL0a and NL0b purged by the purge operation passes through the first liquid passage LF1 and the second liquid passage LF2 as the liquefied low-temperature fluid passage. It passes through and is returned to the first and second land side storage units LT1 and LT2.

[Second Embodiment]
As shown in FIG. 8, the cargo handling facility 100 for the liquefied low-temperature fluid according to the second embodiment returns the low-temperature gas generated during the precooling operation to the first and second land-side storage units LT1 and LT2, respectively. The first and second return flow paths RL1 and RL2 are provided, and the liquid drainage pipe NL0 for extracting the liquefied low-temperature fluid accumulated in the fluid flow pipe is provided, so the explanation will be focused on that point. , The same components as those in the first embodiment are designated by the same reference numerals and the description thereof may be omitted.
In the first embodiment, the first liquid flow path LF1 and the first gas flow path GF1 are merged and connected to the first mixing flow path MF1 and the second liquid flow path LF2. Although the configuration is shown in which the second gas flow path GF2 merges with the second mixing flow path MF2 and is communicated with and connected to the second mixing flow path MF2, in the embodiment, the first gas flow path GF1 goes to the first liquid flow path LF1. Furthermore, the second gas flow path GF2 does not merge with the second liquid flow path LF2.

One end is connected to the confluence flow path JTL via the first return on-off valve RTV1, and the other end is connected to the downstream side outlet of the seventh on-off valve V7 of the first gas passage GF1 via the first gas side return flow path RL1b. A first return flow path RL1 connected to is provided. Further, at the other end of the first return flow path RL1, a first liquid side return flow path RL1a connected to the downstream outlet of the sixth on-off valve V6 of the first liquid flow path LF1 is communicatively connected. A third return on-off valve RTV3 is provided in the first liquid side return flow path RL1a.
Further, one end is connected to the confluence flow path JTL via the second return on-off valve RTV2, and the other end is connected to the ninth on-off valve V9 of the second gas passage flow path GF2 via the second gas side return flow path RL2b. A second return flow path RL2 connected to the downstream outlet is provided. Further, at the other end of the second return flow path RL2, a second liquid side return flow path RL2a connected to the downstream outlet of the eighth on-off valve V8 of the second liquid flow path LF2 is communicatively connected. The second liquid side return flow path RL2a is provided with a fourth return on-off valve RTV4.

By adopting the above configuration, at the initial stage of introduction of the liquefied low-temperature fluid, the liquefied low-temperature fluid is formed from the first liquid flow path LF1 and the first mixing flow path MF1 as the liquefied low-temperature fluid flow path, and the merging flow path JTL. The low-temperature gas generated by vaporization of the gas is guided to the first gas flow path GF1 via the first return flow path RL1, the first liquid side return flow path RL1a, and the first gas side return flow path RL1b. 1 It can be returned to the land side storage unit LT1.
Further, the low temperature gas generated by the vaporization of the liquefied low temperature fluid from the second liquid passage LF2 and the second mixing flow path MF2 as the liquefied low temperature fluid passage and the confluence flow JTL is returned to the second flow. It can be guided to the second gas flow path GF2 via the path RL2, the second liquid side return flow path RL2a, and the second gas side return flow path RL2b, and can be returned to the second land side storage unit LT2.

In the return of the low temperature gas, the first return on-off valve RTV1 to the fourth return on-off valve RTV4, and the first and second check valves CV1, CV2, the first and second flow control valves RV1, RV2, and the sixth on-off valve V6. ~ The thirteenth on-off valve V13 is opened, and the other valve bodies are closed.

In the second embodiment, the liquefied low-temperature fluid passage is performed through the first and second liquid draining on-off valves DV1 and DV2 in a state where the fluid passage pipe is located downward in the vertical direction of the liquefied low-temperature fluid passage. A fluid draining pipe NL0 that is communicated with and connected to the flow path is provided, and the purge gas can be pumped to the drainage pipe NL0 via the sixth purge gas passage path PL6.
The liquid draining operation using the liquid draining pipe NL0 will be described in detail in the fourth embodiment.

[Third Embodiment]
The cargo handling facility 100 for the liquefied low-temperature fluid according to the third embodiment is configured to be able to connect the recovery land-side storage unit LT3 having a sufficient internal filling capacity as the land-side storage unit. It is characterized in that a recovery operation for recovering a fluid or the like to the land side storage unit LT3 for recovery can be executed. Hereinafter, the features will be described with emphasis, and the same configurations as those in the first embodiment may be designated by the same reference numerals and the description thereof may be omitted.
In the first embodiment, at the connection site of the mixing flow paths MF1 and MF2 to the merging flow path JTL, the check valves CV1 and CV2 and the bypass flow paths Mf1a and Mf2a bypassing the check valves CV1 and CV2 Although the configuration is shown in which the on-off valves V4 and V5 for opening and closing the bypass flow paths Mf1a and Mf2a are provided, these configurations are omitted in the embodiment.

In the third embodiment, the detailed configuration regarding the connection of the flange and the like is omitted, but as shown in FIG. 9, the recovery land side storage unit LT3 has the 16th on-off valve V16 to flow in and out of the liquid. A third liquid inflow / outflow section LE3 is provided, and a third gas inflow / outflow section GE3 having a 17th on-off valve V17 to flow in and out of gas is provided.
Further, a second child moving body CM2 for using the land side storage unit LT3 for recovery for cargo handling is provided.
The second child moving body CM2 communicates with the third liquid inflow / outflow portion LE3 and also communicates with the third liquid passage passage LF3 having the 14th on-off valve V14 at the other end and the third gas inflow / outflow portion GE3. A third gas flow path GF3 having a 15th on-off valve V15 is provided at the other end, and both are connected at the other end side and communicated with the third mixing flow path MF3. The third mixing flow path MF3 is provided with a third flow rate adjusting valve RV3 for adjusting the flow rate of the fluid flowing through the third mixing flow path MF3, and the downstream end thereof is a fluid from another moving body. It is connected to the confluence flow path JTL through which it flows.
Further, each of the third liquid passage LF3 and the third gas passage GF3 is provided with a seventh emission valve HV7 and an eighth emission valve HV8 for dissipating the gas inside in the order described.
Further, the third liquid passage LF3 is communicatively connected to the first purge gas passage PL1 via the seventh purge gas passage PL7 provided with the seventh purge valve PV7, and the third gas passage GF3 Is communicated with and connected to the first purge gas passage PL1 via the eighth purge gas passage PL8 provided with the eighth purge valve PV8.

By adopting the above configuration, the third mixing flow path MF3 and the third mixing flow path MF3 and the third mixing flow path MF3 and the third mixing flow path MF3 and the second 3 The liquid flow path LF3 is provided, and the liquefied low-temperature fluid flowing out from the first and second land-side storage sections LT1 and LT2 is recovered to the recovery land-side storage section LT3 via the recovery liquefied low-temperature fluid flow path. It is configured to enable recovery operation.
In the recovery operation, for example, as shown in FIG. 9, when the first and second pumps P1 and P2 flow out a low flow rate lower than the minimum discharge amount to the confluence flow path JTL, the low flow rate is subtracted from the minimum discharge amount. This operation includes a mini-flow operation in which the remaining flow rate is collected in the recovery land side storage unit LT3. In the mini-flow operation shown in FIG. 9, the emergency shutoff valve EV is in the closed state, but by opening the emergency shutoff valve EV, a low flow rate can be guided to the ship side storage unit ST.

In the third embodiment, the fluid flow pipe is located downward in the vertical direction of the liquefied low-temperature fluid passage through the first, second, and third liquid drainage on-off valves DV1, DV2, and DV3. A liquid drain pipe NL0 that is communicated with and connected to the liquefied low-temperature fluid passage is provided, and the purge gas can be pumped to the liquid drain pipe NL0 via the sixth purge gas passage PL6.
The liquid draining operation using the liquid draining pipe NL0 will be described in detail in the fourth embodiment.

[Fourth Embodiment]
In the fourth embodiment, as shown in FIGS. 10 to 15, in addition to the configuration disclosed in the third embodiment, the low temperature gas generated in the fluid flow pipe is stored in the land side storage portions LT1, LT2, LT3. Since it is characterized by having a third return flow path RL3 for returning to, the description will be focused on the feature, and the same components as those in the third embodiment will be designated by the same reference numerals and the description thereof will be omitted. There is.
In the third embodiment, the first liquid passage LF1 and the first gas passage GF1 are merged and connected to the first mixing passage MF1, the second liquid passage LF2 and the first. A configuration in which the two gas flow paths GF2 merge and communicate with the second mixing flow path MF2, and the third liquid flow path LF3 and the third gas flow path GF3 merge into the third mixing flow path MF3. Although the configuration for communicating and connecting is shown, in the fourth embodiment, the first gas passage GF1 does not merge with the first liquid passage LF1, and the second gas passage GF2 flows through the second liquid. Further, the third gas passage GF3 does not merge with the third liquid passage LF3, and the third gas passage GF3 does not merge with the third liquid passage LF3.

The downstream end of the third return flow path RL3 is connected to the confluence flow path JTL via the second dissipation valve HV2 described above, and the upstream end thereof is the sixth of the first liquid flow path LF1. Downstream outlet of on-off valve V6, downstream outlet of 7th on-off valve V7 of 1st gas passage GF1, downstream outlet of 8th on-off valve V8 of 2nd liquid passage LF2, 2nd gas passage The downstream outlet of the 9th on-off valve V9 of the GF2 and the downstream outlet of the 15th on-off valve V15 of the third gas passage GF3 are connected to each other. A fifth return on-off valve RTV5 is provided at a connection portion of the first liquid passage LF1 to the downstream outlet of the sixth on-off valve V6, and is downstream of the eighth on-off valve V8 of the second liquid passage LF2. A sixth return on-off valve RTV6 is provided at the connection site to the side outlet.

Further, as a fluid communication pipe, in a state of being located downward in the vertical direction of the liquefied low-temperature fluid passage, the liquefied low-temperature fluid passage can be reached via the first, second, and third liquid draining on-off valves DV1, DV2, and DV3. A liquid draining pipe NL0 that is communicated and connected is provided, and the purge gas can be pumped to the liquid draining pipe NL0 via the sixth purge gas passage PL6.
Specifically, the first liquid draining on-off valve DV1 is provided at the connection portion between the lowermost end of the first mixing flow path MF1 in the vertical direction and the liquid draining pipe NL0, and the maximum in the vertical direction of the second mixing flow path MF2. A second liquid draining on-off valve DV2 is provided at the connection site between the lower end and the liquid draining pipe NL0, and a third liquid draining on-off valve is provided at the connecting part between the lowermost end of the third mixing flow path MF3 in the vertical direction and the liquid draining pipe NL0. A DV3 is provided, and a ninth purge valve PV9 is provided in the sixth purge gas passage PL6.

In the cargo handling facility 100 according to the fourth embodiment, after the purge operation shown in the first embodiment is executed, the gas introduction operation and the liquid introduction operation are sequentially executed in the open / closed state of the valve shown in FIG. .. In the liquid introduction operation in the fourth embodiment, the gas is generated via the third return flow path RL3, the first gas flow path GF1, the second gas flow path GF2, and the third gas flow path GF3. The low-temperature gas is returned to the first and second land-side storage units LT1 and LT2 and the recovery land-side storage unit LT3.

After the liquid introduction operation, the first pump P1 and the second pump P2 are operated, but the internal pressure of the ship side storage section ST exceeds the allowable pressures of the first and second land side storage sections LT1 and LT2. In this case, it is necessary to close the emergency shutoff valve EV so that the gas in the ship-side storage section ST does not flow into the first and second land-side storage sections LT1 and LT2. If it takes time to boost the pressure of the first pump P1 and the second pump P2, the emergency shutoff is performed until the discharge pressure (+ pressure due to height difference + pressure loss) of the first pump P1 and the second pump P2 exceeds the pressure of the ship. The valve EV needs to be closed.
Therefore, in the discharge pressure changing operation executed in the circuit state shown in FIG. 11, the discharge pressure is applied while the liquefied low-temperature fluid is passed through the first pump P1 and the second pump P2 with the emergency shutoff valve EV closed. While gradually increasing the pressure, the discharged liquefied low-temperature fluid is recovered in the recovery land side storage unit LT3.
The same process is executed when the first pump P1 and the second pump P2 are stepped down.

When the operation is executed and the discharge pressures of the first pump P1 and the second pump P2 reach a desired pressure exceeding the internal pressure of the ship-side storage unit ST, an emergency shutoff is performed as shown in FIG. Discharge destination change operation that shifts the valve EV, the third on-off valve V3, and the second on-off valve V2 to the open state, and shifts the third flow rate adjusting valve RV3, the 14th on-off valve V14, and the 16th on-off valve V16 to the closed state. After executing the above, the steady cargo handling operation for introducing the liquefied low-temperature fluid into the ship-side storage unit ST is executed.

When the cargo handling by the steady cargo handling operation is completed, the discharge destination of the liquefied low-temperature fluid is changed to the recovery land side storage unit LT3 again by the discharge destination change operation, and the first pump P1 and the second pump P2 are changed by the discharge pressure change operation. After executing the step-down processing of the discharge pressure of, in the circuit state shown in FIG. 13, the purge gas of the purge gas storage unit PT is passed through the main purge gas flow path PL0 and the first purge gas flow path PL1 to the hose H and the ship side. The first residual liquid treatment operation is executed in which the liquefied low-temperature fluid is passed through the flow path SL and the ship-side liquid flow path SLb and pumped to the ship-side storage unit ST.
Further, as shown in the circuit state shown in FIG. 13, the first liquid draining on-off valve DV1, the second liquid draining on-off valve DV2, and the third liquid-draining on-off valve DV3 are opened, and the merging flow path JTL and the first mixed flow flow. Drain the liquefied low-temperature fluid that stays in the passage MF1, the second mixing flow path MF2, the third mixing flow path MF3, the first liquid flow path LF1, the second liquid flow path LF2, and the third liquid flow path LF3. It is guided to the pipe NL0, and then, in the circuit state shown in FIG. 14, each flow path from which the liquid has been drained is filled with low-temperature gas from the first and second land-side storage units LT1 and LT2 and the recovery land-side storage unit LT3. The second residual liquid treatment operation is executed.
Finally, in the circuit state shown in FIG. 15, the purge gas is guided from the purge gas storage unit PT to the liquid drain pipe NL0 via the main purge gas flow path PL0 and the first purge gas flow path PL1 and stored in the liquid drain pipe NL0. A third residual liquid treatment operation is executed in which the liquefied low-temperature fluid is recovered in the recovery land side storage unit LT3 via the third liquid flow path LF3. That is, the residual liquid treatment is executed in the same manner as in the first embodiment.
In the third residual liquid treatment operation, the residual liquid may be returned to the first and second land side storage units LT1 and LT2 by devising the circuit configuration.

[Another Embodiment]
(1) In the above embodiment, a tank lorry has been exemplified as a land-side storage unit for storing a liquefied low-temperature fluid to be handled with a ship. However, the land-side storage unit may be a tanker placed on the water in addition to a fixed storage tank provided on land.

(2) Further, although not shown, each of the moving bodies is provided with a heating evaporator that heats the liquefied low-temperature fluid pumped from the first and second land-side storage portions LT1 and LT2 by heat exchange with air. In addition to being provided as a pumping means in place of the first pump P1 and the second pump P2, it is also provided with a return path for returning low-temperature gas such as natural gas boosted by the evaporation to the first and second land side storage units LT1 and LT2. It is possible to adopt a configuration in which the pressure from the 1st and 2nd land side storage portions LT1 and LT2 is controlled to a desired pressure.
The low-temperature fluid such as natural gas generated by the heating evaporator can be supplied as fuel to the generator provided in the parent moving body PM.
It should be noted that the low temperature fluid may be supplied to the generator which is independently provided without being incorporated in the moving body.

(3) In the above embodiment, each of the moving bodies has been shown to be communicatively connected to a single land-side storage unit, but a plurality of land-side storage units are communicatively connected to one moving body. The configuration can also be adopted.

(4) Even if the maximum pumping flow rate of the liquefied low-temperature fluid by the second pump P2 of the child moving body CM is smaller than the maximum pumping flow rate of the liquefied low-temperature fluid by the first pump P1 of the parent moving body PM. I do not care. Then, the first pump P1 of the parent moving body PM is operated for cargo handling operation to handle the liquefied low-temperature fluid to the storage unit ST on the ship side, and only the second pump P2 of the child moving body CM is used for the fluid flow pipe or the ship. A configuration that operates in a precooling operation for precooling a tank or the like may be adopted.
However, the second pump P2 of the child moving body CM may be operated during cargo handling operation. By clarifying the role of each pump in this way, the range of the discharge flow rate required for the pump can be limited, and the equipment cost can be reduced.

(5) In the above embodiment, the cargo handling facility 100 is provided with one parent moving body PM. However, a configuration including two or more parent moving bodies PM may be adopted.
Then, in a state where the parent moving bodies PM are arranged at a distance from each other, each of the parent moving bodies PM may be configured to separately carry out cargo handling of the liquefied low-temperature fluid with a different ship S. Absent.
Further, the control devices C of the parent moving body PM may be configured to communicate with each other to establish a master-slave relationship.

(6) In the first to fourth embodiments, a configuration in which a pump bypass flow path that bypasses the first pump P1 may be provided may be adopted.
By adopting this configuration, even when the first pump P1 is a pump that does not allow backflow from the downstream side to the upstream side, the fluid can flow from the downstream side to the upstream side through the pump bypass flow path. Can be done.
Further, when the first pump P1 flows out a low flow rate lower than the minimum discharge amount to the confluence flow path JTL, a mini-flow operation in which the residual flow rate obtained by subtracting the minimum flow rate from the minimum discharge amount is passed through the pump bypass flow path. Can be executed.

(7) In the above embodiment, the configuration example including both the parent moving body and the child moving body is shown, but the parent moving body may be a single configuration.
Further, as for the tank lorry as a land-side moving body, a single configuration can be preferably adopted.

(8) In the above embodiment, the liquefied low-temperature fluid stored in the drainage pipe NL0 is pumped by the purge gas stored in the purge gas storage unit PT, and is stored in the land-side storage units LT1, LT2, or the recovery land-side storage unit. An example of the configuration returned to the unit LT3 is shown.
As another configuration, the BOG (an example of low-temperature gas) stored in the ship-side storage unit ST may be configured to pump the liquefied low-temperature fluid stored in the liquid drain pipe NL0.
In this case, the ship-side flow path SL including the ship-side gas passage SLa and the confluence flow path JTL function as the pumping gas passage.

(9) In the first embodiment, the first and second drainage pipes NL0a and NL0b are arranged so that the downstream side is vertically downward from the upstream side in the liquid drainage direction. However, it may be horizontal.

It should be noted that the configuration disclosed in the above embodiment (including another embodiment, the same shall apply hereinafter) can be applied in combination with the configuration disclosed in other embodiments as long as there is no contradiction. The embodiments disclosed in the present specification are examples, and the embodiments of the present invention are not limited thereto, and can be appropriately modified without departing from the object of the present invention.

The cargo handling equipment for the liquefied low-temperature fluid of the present invention can be effectively used as the cargo handling equipment for the liquefied low-temperature fluid that can effectively and quickly carry out the cargo handling of LNG to a ship.

100: Cargo handling equipment CM: Child moving body CM2: Second child moving body DV1: First liquid draining on-off valve DV2: Second liquid draining on-off valve DV3: Third liquid-draining on-off valve DV4: Fourth liquid-draining on-off valve JTL: Confluence flow path LF1: First liquid flow path LF2: Second liquid flow path LF3: Third liquid flow path LT1: First land side storage unit LT2: Second land side storage part LT3: Recovery land side storage Part MF1: 1st mixing flow path MF2: 2nd mixing flow path MF3: 3rd mixing flow path NL0: Liquid draining pipe P1: 1st pump P2: 2nd pump PL0: Main purge gas passage flow path PL1: 1st purge gas passage Flow path PL2: 2nd purge gas flow path PL3: 3rd purge gas flow path PL4: 4th purge gas flow path PL5: 5th purge gas flow path PL6: 6th purge gas flow path PL7: 7th purge gas flow path PL7 PL8: 8th purge gas flow path PM: Parent moving body PT: Purge gas storage unit S: Ship ST: Ship side storage unit TL1: Land side storage unit TL2: Land side storage unit TL3: Recovery land side storage unit QC2: No. 2 Quick coupler H: Hose

Claims (6)

It is a cargo handling facility for liquefied low-temperature fluid that handles liquefied low-temperature fluid with a ship that transports liquefied low-temperature fluid on water.
A pumping means for pumping the liquefied low-temperature fluid from the land-side storage unit that stores the liquefied low-temperature fluid on land to the ship-side storage unit that stores the liquefied low-temperature fluid on the ship, and the land-side storage unit and the ship-side storage unit. A fluid flow pipe through which a liquefied low-temperature fluid or a vaporized fluid vaporized by the liquefied low-temperature fluid flows, and a detachable attachment / detachment mechanism at one end at the connection end of the fluid flow pipe, and the other end It is equipped with a flexible fluid flow section that can be connected to the storage section on the ship side to allow liquefied low-temperature fluid to flow.
As the fluid flow pipe,
The liquefied low-temperature fluid flow path through which the liquefied low-temperature fluid flows from the land-side storage section,
A cargo handling facility for a liquefied low-temperature fluid, comprising a liquid-draining pipe that communicates with the liquefied low-temperature fluid passage through a liquid-draining on-off valve while being located downward in the vertical direction of the liquefied low-temperature fluid passage. The liquefied low-temperature fluid according to claim 1, wherein the liquefied low-temperature fluid is arranged so that the downstream side is vertically downward from the upstream side in the liquid bleeding direction as the flow direction when the liquefied low-temperature fluid is taken out. Cargo handling equipment. The upstream end of the drainage pipe in the drainage direction is connected to a pressure feed gas passage through which the pressure feed gas flows.
The liquefied low-temperature fluid flow is a one-stroke flow path that guides the liquefied low-temperature fluid of the drainage pipe, which is pumped by the pressure-feed gas flowing from the pumped gas passage, to the land-side storage portion by a one-stroke flow path. The cargo handling facility for a liquefied low-temperature fluid according to claim 2, which is composed of a road. The cargo handling facility for a liquefied low-temperature fluid according to claim 3, wherein the pumped gas passage is a purge gas passage for passing purge gas from a purge gas storage unit for storing purge gas. It is provided with at least one moving body having the pumping means and the fluid flow pipe and capable of moving in a state where the connection between the ship and the land side storage portion is disconnected.
The cargo handling facility for a liquefied low-temperature fluid according to any one of claims 1 to 4, wherein the liquid draining pipe is provided independently for each of the moving bodies. With a plurality of the moving bodies
The liquefied low-temperature fluid passage is configured to allow the liquefied low-temperature fluid from each of the plurality of land-side storage portions to flow, and the liquefied low-temperature fluid flowing through the liquefied low-temperature fluid passage merges. Equipped with a flow path
The piping capacity of the drainage pipe is the flexible fluid flow between the land-side storage section and the ship-side storage section at the end of the liquid introduction operation for introducing the liquefied low-temperature fluid into the ship-side storage section. The cargo handling facility for a liquefied low-temperature fluid according to claim 5, which is a capacity capable of storing the entire amount of the liquefied low-temperature fluid existing inside the unit, the liquefied low-temperature fluid passage, and the confluence flow path.

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