WO2015185788A1 - Bunkering station and method of operating a bunkering station - Google Patents
Bunkering station and method of operating a bunkering station Download PDFInfo
- Publication number
- WO2015185788A1 WO2015185788A1 PCT/FI2014/050440 FI2014050440W WO2015185788A1 WO 2015185788 A1 WO2015185788 A1 WO 2015185788A1 FI 2014050440 W FI2014050440 W FI 2014050440W WO 2015185788 A1 WO2015185788 A1 WO 2015185788A1
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- WIPO (PCT)
- Prior art keywords
- bunkering
- line
- valve
- main
- nitrogen
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
Definitions
- the invention is in general related to the field of using liquid fuel, in particular liquefied natural gas (LNG), as a marine fuel in one or more engines of a ship or of a corresponding sea-going ship.
- liquid fuel in particular liquefied natural gas (LNG)
- LNG liquefied natural gas
- the invention is related to a bunkering station that is used to fill up the system with liquid fuel, in particular LNG, and to a method of operating a bunkering station. More particularly the invention relates to the bunkering station according to the preamble of independent bunkering station claim and to the method of operating a bunkering station according to the preamble of the independent method claim.
- Liquid fuels that are used as marine fuels are typically liquefied natural gas, liquefied petroleum gas or liquid petroleum gas (LPG), methanol, ethylene.
- Natural gas is in gaseous form in room temperature. In ships that use natural gas as fuel, the natural gas is typically stored onboard in liquid form, and thus this marine fuel is commonly called by its acronym LNG (Liquefied Natural Gas). Natural gas can be kept in liquid form by maintaining its temperature below a boiling point, which is approximately -162 °C.
- LNG system onboard comprises typically a bunkering station, which is the ship's connection with a LNG terminal on shore or with an LNG bunkering barge, insulated pipes for leading LNG to an LNG tank, which is for storage of LNG and a tank room where LNG is controllably evaporated and its distribution to the engine(s) is arranged.
- the bunkering station comprises typically one bunkering line (LNG line), one return line and one nitrogen purging line with respective control and safety valves and flanges.
- the return line is needed when the bunkering oper- ation is performed with two connected hoses for returning the possibly evaporated gas to the bunkering terminal or the bunkering barge.
- the bunkering station known from prior art comprises as control and safety valves a main bunkering valve, which typically is pneumatically actuated with a manual override, two nitrogen valves, one of which is pneumatically ac- tuated and one manually actuated, two thermal relief valves with flanged connection and on the bunkering line (LNG line) a pressure indicator and transmitter located before the main bunkering valve and a pressure transmitter after the main bunkering valve and on the nitrogen line a pressure indicator before the nitrogen valves.
- the valves, indicators and transmitters are each separate- ly connected to the respective pipes by welding or by flanges onboard when the bunkering station is installed.
- An object of the present invention is to provide an improved bunkering station and a method of operating a bunkering station, in which the problems de- scribed above are eliminated or at least minimized.
- An object of the present invention is to provide an improved bunkering station, which is cost-effective and easy to install.
- One particular object of the invention is to create a bunkering station, which can be assembled to a bunkering station unit before installing it on the ship on a shipyard.
- the bunkering station according to the invention is characterized by the features of the characterizing part of independent bunkering station claim and the method of operating a bunkering station according to the invention is charac- terized by the features of independent method claim.
- Advantageous embodiments and features are defined in dependent claims.
- the bunkering station comprising a main bunkering line for liquid fuel and a nitrogen line and valves of the main bunkering line and the nitrogen line
- the main bunkering line of the bunkering station has a main bunkering valve
- the nitrogen line of the bunkering station has a nitrogen valve
- the main bunkering valve and nitrogen valve are merged to a valve block, which has two connections to the bunkering station.
- the nitrogen line has only one nitrogen valve.
- the bunkering station comprises a valve block comprising valves, indicators and/or transmitters merged.
- the valve block has two connections to the bunkering station, more advantageously one flanged connection and one welded connection.
- valve block of the bunkering station further comprises pressure indicators and/or transmitters of the main bunkering line merged to the valve block.
- valve block of the bunkering station further comprises a pressure indicator of the nitrogen line merged to the valve block.
- valve block of the bunkering station further comprises relief valves of the main bunkering line merged to the valve block.
- valve block is connected to a connection of a bunkering hose i.e. a filling hose of the bunkering station, advantageously by flanged connection, and by the end to be attached, advantageously to be welded, to a tank line the valve block is connected to main bunkering line leading to a liquid fuel tank, advantageously to an LNG tank.
- the pressure indicators are connected to the main bunkering line by spiral coils.
- the valve block of the bunkering station is assembled to one unit before taking it to the ship and is ready for install at the shipyard.
- the nitrogen valve is a two way valve, advantageously an actuated, extended two way valve, and the main bunkering valve is an actuated ball valve with a T-bore.
- the main bunkering valve is located in the main bunkering line at location where the nitrogen line joins to the main bunkering line and that the nitrogen valve is located in the nitrogen line at a distance from the location where the nitrogen line joins to the main bunkering line. According to an advantageous aspect in method of operating a bunkering station according to the invention in normal or maintenance process stage the main bunkering valve and the nitrogen valve are closed and thus no liquid fuel nor nitrogen flows through the main bunkering valve in the main bunkering line nor nitrogen flows through the nitrogen valve in the nitrogen valve.
- the main bunkering valve in the main bunkering line is open and a liquid fuel filling hose is connected to the end to be attached to the filling hose by its end to be attached to a filling line and the nitrogen valve of the nitrogen line is closed, whereby fuel flow is from the liquid fuel supply to the liquid fuel tank through the main bunkering valve and the main bunkering line.
- the main bunkering valve in the main bunkering line is closed and the nitrogen valve in the nitrogen line is open, whereby nitrogen flushing flow is towards the liquid fuel supply.
- a ship comprises the bunkering station according to the invention.
- the bunkering station according to the invention makes it possible to assemble the valve block before taking it to the ship and thus testing and stress analyzing and certifying can be done before hand by the supplier. Also the control and maintenance is easier as fewer valves are needed. Also the total weight and size of the bunkering station can be reduced. As all parts are prefabricated and the valve block is ready for install at the shipyard, engineering hours will be saved and delivery time will be shortened and at same time quality is improved.
- FIG. 1 shows schematically a simplified example of a valve block of a bunkering station according to an advantageous example of the invention
- Figs. 2A - 2C show schematically a back view, a side view and a top view of the example of figure l and
- FIGs. 3A - 3D show schematically a simplified example of a process sequence of a bunkering station according to advantageous examples of the invention.
- corresponding reference numbers and signs will be used to identify like elements, parts and part components unless otherwise mentioned.
- some references sign have not been repeated for clarity reasons.
- the examples are described mainly by reference to an LNG bunkering station of a ship or a corresponding vessel in view of simplifying the disclosure but it should be noted that instead of this example any type of a bunkering station for LNG can have similar features and properties in accordance with the invention.
- FIG 1 is shown a simplified example of a valve block of a bunkering station and in figures 2A - 2C the same simplified example in a back view, fig. 2A, in a side view, fig. 2B, and in a top view, fig. 2C, of figure 1 .
- the bunkering station is which is the ship's connection with an LNG terminal on shore or with an LNG bunkering barge, insulated pipes for leading LNG to an LNG tank, which is for storage of LNG and a tank room where LNG is controllably evaporated and its distribution to the engine(s) is arranged.
- the valve block 10 comprises a main bunkering line (LNG line) 1 1 forming a part of the main bunkering line 1 1 with an end 12 to be attached to a filling hose ,and an end 13 to be attached to a tank line.
- LNG line main bunkering line
- a flange will be welded, which flange is connect to a flanged connection 17 (figs. 3A - 3D) of a bunkering hose 16 (figs. 3A - 3B) and the end 13 of the valve block 10 to be attached to the tank line is connected advantageously by welding to main bunkering line leading to the LNG tank (not shown).
- the valve block 10 also comprises a nitrogen line 15 for nitrogen flushing the LNG hose and the main bunkering line 1 1 after the filling operation of the LNG.
- the main bunkering line 1 1 has a main bunkering valve 21 , which is advantageously pneumatically actuated and has advantageously a manual override.
- the nitrogen line 15 has a nitrogen valve 25.
- On the main bunkering line 1 1 there are relief valves 31 on each side of the main bunkering valve 21 and a pressure indicator / transmitter 32 after the valve block 10 on the tank side i.e. on the side of the end 13 to be connected to the tank line.
- the nitro- gen line 15 is connected when required to a nitrogen source by the end 35.
- the nitrogen valve 25 in the nitrogen line has an actuator 36 for controlling its use thus the nitrogen valve 25 can be operated even from the navigation bridge of the ship.
- the nitrogen valve 25 is operable also outside bunkering times, if needed for example flushing before the ship sails to a harbor before the bunkering operation.
- the relief valves 31 on the main bunkering line 1 1 open in case of overpressure in the line, for example if LNG is left in the pipes and it evaporates due temperature. During normal situations these relief valves 31 are not needed as the pipes are flushed clean of LNG by the nitrogen feed.
- the pressure indicators 32 indicate the pressure on each side of the valve block 10 for the process control.
- the pressure indicators 32 are connected to the main bunkering line by spiral coils 33 in order to prevent LNG reaching sensors of the pressure indicators 32 as the temperature of the LNG is typically - 165 °C and the sensors do not resist this cold temperatures.
- the nitrogen valve 25 may comprise a manual override for manual closing independent of the actuator 26 controlling the nitrogen valve 25.
- valve block 10 comprising valves 21 , 25, indicators 32, 34 and/or transmitters merged and has two connections to the bunkering station, advantageously one connection end 12 to attach a flange and one welded connection end 13.
- the main bunkering valve 21 is an actuated ball valve with a T-bore.
- the nitrogen valve 25 is an actuated, extended two way valve.
- the main bunkering valve 21 is located in the main bunkering line 1 1 at location where the nitrogen line 15 joins to the main bunkering line 1 1 and the nitrogen valve 25 is located in the nitrogen line 15 at a distance from the location where the nitrogen line 15 joins to the main bunkering line 1 1 .
- the nitrogen line 15 is perpendicular to the main bunkering line 1 1 .
- the actuators for the valves are advantageously pneumatic actuators or electrical actuators.
- FIG 3A is schematically shown the valve system in normal or maintenance process stage.
- the main bunkering valve 21 and the nitrogen valve 25 are closed and thus no LNG nor nitrogen flows through the main bunkering valve 21 in the main bunkering line 1 1 and nor nitrogen flows through the nitrogen valve 25 in the nitrogen valve.
- the end 12 of the main bunkering line 1 1 is closed.
- FIG 3B is schematically shown the valve system in LNG filling process stage.
- LNG is filled to the LNG tank (not shown) through the bunkering station 10 (fig. 1 )
- the main bunkering valve 21 in the main bunkering line 1 1 is open and LNG filling hose 16 is connected to the end 12 to attach a flange of the main bunkering line 1 1 by its flanged connection 17.
- the nitrogen valve 25 of the nitrogen line 15 is closed.
- the fuel flow LNG is from the LNG supply to the LNG tank through the main bunkering valve 21 and the main bunkering line 1 1 .
- FIG 3C is schematically shown the valve system in a flushing process stage, when nitrogen flushing is towards the LNG supply.
- the filling hose 16 and the hose-end 1 1 H of the main bunkering line 1 1 on the side of the filling hose 16 is flushed of possibly evapo- rated LNG in a hose flushing stage.
- the LNG filling hose 16 is connected to the end 12 of the main bunkering line 1 1 by its flanged connection 17.
- the main bunkering valve 21 in the main bunkering line 1 1 is closed and the nitrogen valve 25 in the nitrogen line is open and nitrogen flushing flow N is towards the LNG supply.
- FIG 3D is schematically shown the valve system in a flushing process stage, when nitrogen flushing is towards the LNG tank.
- the hose flushing stage (fig. 3C) is completed, the filling hose 16 is disconnected and the end 12 of the main bunkering line 1 1 is closed and the hose-end 1 1 H of the main bunkering line 1 1 and the tank sided end 1 1 T of the main bunkering line 1 1 is flushed of possibly evaporated LNG in a line flushing stage.
- the main bunkering valve 21 in the main bunkering line 1 1 is open and the nitrogen valve 25 in the nitrogen line is open and the nitrogen flushing flows NH, NT flush the main bunkering line 1 1 to the LNG tank.
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a bunkering station comprising a main bunkering line (11) for liquid fuel and a nitrogen line (15) and valves (21, 25) of the main bunkering line (11) and the nitrogen line (15). The main bunkering line (11) has a main bunkering valve (21) and that the nitrogen line (15) has a nitrogen valve (25) and that the main bunkering valve and nitrogen valve (21, 25) are merged to a valve block (10), which has two connections (12, 13) to the bunkering station. The invention also relates to a method of operating a bunkering station.
Description
Bunkering station and method of operating a bunkering station
The invention is in general related to the field of using liquid fuel, in particular liquefied natural gas (LNG), as a marine fuel in one or more engines of a ship or of a corresponding sea-going ship. In particular the invention is related to a bunkering station that is used to fill up the system with liquid fuel, in particular LNG, and to a method of operating a bunkering station. More particularly the invention relates to the bunkering station according to the preamble of independent bunkering station claim and to the method of operating a bunkering station according to the preamble of the independent method claim.
Liquid fuels that are used as marine fuels are typically liquefied natural gas, liquefied petroleum gas or liquid petroleum gas (LPG), methanol, ethylene. Natural gas is in gaseous form in room temperature. In ships that use natural gas as fuel, the natural gas is typically stored onboard in liquid form, and thus this marine fuel is commonly called by its acronym LNG (Liquefied Natural Gas). Natural gas can be kept in liquid form by maintaining its temperature below a boiling point, which is approximately -162 °C. LNG system onboard comprises typically a bunkering station, which is the ship's connection with a LNG terminal on shore or with an LNG bunkering barge, insulated pipes for leading LNG to an LNG tank, which is for storage of LNG and a tank room where LNG is controllably evaporated and its distribution to the engine(s) is arranged. The bunkering station comprises typically one bunkering line (LNG line), one return line and one nitrogen purging line with respective control and safety valves and flanges. The return line is needed when the bunkering oper- ation is performed with two connected hoses for returning the possibly evaporated gas to the bunkering terminal or the bunkering barge.
Typically the bunkering station known from prior art comprises as control and safety valves a main bunkering valve, which typically is pneumatically actuated with a manual override, two nitrogen valves, one of which is pneumatically ac- tuated and one manually actuated, two thermal relief valves with flanged connection and on the bunkering line (LNG line) a pressure indicator and transmitter located before the main bunkering valve and a pressure transmitter after the main bunkering valve and on the nitrogen line a pressure indicator before the nitrogen valves. The valves, indicators and transmitters are each separate-
ly connected to the respective pipes by welding or by flanges onboard when the bunkering station is installed. All welds on the bunkering line must be inspected 100% by x-ray inspection as pores or fractures or corresponding defects must not exist. The assembling and the inspection of the valves for the bunkering station onboard is thus time-consuming and requires the relevant, skilled personnel to be present at the assembly site. This also increases the delivery time.
An object of the present invention is to provide an improved bunkering station and a method of operating a bunkering station, in which the problems de- scribed above are eliminated or at least minimized.
An object of the present invention is to provide an improved bunkering station, which is cost-effective and easy to install.
One particular object of the invention is to create a bunkering station, which can be assembled to a bunkering station unit before installing it on the ship on a shipyard.
In order to achieve the above objects and those that will come apparent later the bunkering station according to the invention is characterized by the features of the characterizing part of independent bunkering station claim and the method of operating a bunkering station according to the invention is charac- terized by the features of independent method claim. Advantageous embodiments and features are defined in dependent claims.
According to the invention the bunkering station comprising a main bunkering line for liquid fuel and a nitrogen line and valves of the main bunkering line and the nitrogen line, the main bunkering line of the bunkering station has a main bunkering valve and the nitrogen line of the bunkering station has a nitrogen valve and the main bunkering valve and nitrogen valve are merged to a valve block, which has two connections to the bunkering station.
According to an advantageous feature the nitrogen line has only one nitrogen valve. According to an advantageous aspect of the invention the bunkering station comprises a valve block comprising valves, indicators and/or transmitters merged. Advantageously the valve block has two connections to the bunkering
station, more advantageously one flanged connection and one welded connection.
According to an advantageous feature the valve block of the bunkering station further comprises pressure indicators and/or transmitters of the main bunkering line merged to the valve block.
According to an advantageous feature the valve block of the bunkering station further comprises a pressure indicator of the nitrogen line merged to the valve block.
According to an advantageous feature the valve block of the bunkering station further comprises relief valves of the main bunkering line merged to the valve block.
According to an advantageous feature by an end to be attached to a filling hose the valve block is connected to a connection of a bunkering hose i.e. a filling hose of the bunkering station, advantageously by flanged connection, and by the end to be attached, advantageously to be welded, to a tank line the valve block is connected to main bunkering line leading to a liquid fuel tank, advantageously to an LNG tank.
According to an advantageous feature the pressure indicators are connected to the main bunkering line by spiral coils. According to an advantageous feature the valve block of the bunkering station is assembled to one unit before taking it to the ship and is ready for install at the shipyard.
According to an advantageous feature the nitrogen valve is a two way valve, advantageously an actuated, extended two way valve, and the main bunkering valve is an actuated ball valve with a T-bore.
According to an advantageous feature the main bunkering valve is located in the main bunkering line at location where the nitrogen line joins to the main bunkering line and that the nitrogen valve is located in the nitrogen line at a distance from the location where the nitrogen line joins to the main bunkering line.
According to an advantageous aspect in method of operating a bunkering station according to the invention in normal or maintenance process stage the main bunkering valve and the nitrogen valve are closed and thus no liquid fuel nor nitrogen flows through the main bunkering valve in the main bunkering line nor nitrogen flows through the nitrogen valve in the nitrogen valve. In the method in liquid fuel filling stage the main bunkering valve in the main bunkering line is open and a liquid fuel filling hose is connected to the end to be attached to the filling hose by its end to be attached to a filling line and the nitrogen valve of the nitrogen line is closed, whereby fuel flow is from the liquid fuel supply to the liquid fuel tank through the main bunkering valve and the main bunkering line. In the method in a flushing stage, when nitrogen flushing is towards the liquid fuel supply and the liquid fuel filling hose is connected to the valve block, the main bunkering valve in the main bunkering line is closed and the nitrogen valve in the nitrogen line is open, whereby nitrogen flushing flow is towards the liquid fuel supply. In the method in a flushing process stage, when nitrogen flushing is towards the liquid fuel tank the filling hose is disconnected and the end to be attached to the filling hose is closed, the main bunkering valve in the main bunkering line is open and the nitrogen valve in the nitrogen line is open, whereby the nitrogen flushing flows flush the main bunkering line to the liquid fuel tank.
According to an advantageous aspect a ship comprises the bunkering station according to the invention.
The bunkering station according to the invention and its advantageous features and aspects makes it possible to assemble the valve block before taking it to the ship and thus testing and stress analyzing and certifying can be done before hand by the supplier. Also the control and maintenance is easier as fewer valves are needed. Also the total weight and size of the bunkering station can be reduced. As all parts are prefabricated and the valve block is ready for install at the shipyard, engineering hours will be saved and delivery time will be shortened and at same time quality is improved.
In the following the invention is described in more detail by reference to the accompanying drawing in which
Fig. 1 shows schematically a simplified example of a valve block of a bunkering station according to an advantageous example of the invention,
Figs. 2A - 2C show schematically a back view, a side view and a top view of the example of figure l and
Figs. 3A - 3D show schematically a simplified example of a process sequence of a bunkering station according to advantageous examples of the invention. During the course of the following description of figures 1 - 3D corresponding reference numbers and signs will be used to identify like elements, parts and part components unless otherwise mentioned. In the figures some references sign have not been repeated for clarity reasons. In the following the examples are described mainly by reference to an LNG bunkering station of a ship or a corresponding vessel in view of simplifying the disclosure but it should be noted that instead of this example any type of a bunkering station for LNG can have similar features and properties in accordance with the invention.
In figure 1 is shown a simplified example of a valve block of a bunkering station and in figures 2A - 2C the same simplified example in a back view, fig. 2A, in a side view, fig. 2B, and in a top view, fig. 2C, of figure 1 . The bunkering station is which is the ship's connection with an LNG terminal on shore or with an LNG bunkering barge, insulated pipes for leading LNG to an LNG tank, which is for storage of LNG and a tank room where LNG is controllably evaporated and its distribution to the engine(s) is arranged. The valve block 10 comprises a main bunkering line (LNG line) 1 1 forming a part of the main bunkering line 1 1 with an end 12 to be attached to a filling hose ,and an end 13 to be attached to a tank line. To the end 12 of the valve block 10 to be attached to the filling hose advantageously a flange will be welded, which flange is connect to a flanged connection 17 (figs. 3A - 3D) of a bunkering hose 16 (figs. 3A - 3B) and the end 13 of the valve block 10 to be attached to the tank line is connected advantageously by welding to main bunkering line leading to the LNG tank (not shown). The valve block 10 also comprises a nitrogen line 15 for nitrogen flushing the LNG hose and the main bunkering line 1 1 after the filling operation of the LNG. The main bunkering line 1 1 has a main bunkering valve 21 , which is advantageously pneumatically actuated and has advantageously a manual override. The nitrogen line 15 has a nitrogen valve 25. On the main bunkering line 1 1 there are relief valves 31 on each side of the main bunkering valve 21 and a pressure indicator / transmitter 32 after the valve block 10 on the tank side i.e. on the side of the end 13 to be connected to the tank line. The nitro- gen line 15 is connected when required to a nitrogen source by the end 35.
The nitrogen valve 25 in the nitrogen line has an actuator 36 for controlling its use thus the nitrogen valve 25 can be operated even from the navigation bridge of the ship. The nitrogen valve 25 is operable also outside bunkering times, if needed for example flushing before the ship sails to a harbor before the bunkering operation. The relief valves 31 on the main bunkering line 1 1 open in case of overpressure in the line, for example if LNG is left in the pipes and it evaporates due temperature. During normal situations these relief valves 31 are not needed as the pipes are flushed clean of LNG by the nitrogen feed. The pressure indicators 32 indicate the pressure on each side of the valve block 10 for the process control. The pressure indicators 32 are connected to the main bunkering line by spiral coils 33 in order to prevent LNG reaching sensors of the pressure indicators 32 as the temperature of the LNG is typically - 165 °C and the sensors do not resist this cold temperatures. There is also a pressure indicator 34 on the nitrogen line 15 with a manual operating means. The nitrogen valve 25 may comprise a manual override for manual closing independent of the actuator 26 controlling the nitrogen valve 25.
The valve block 10 comprising valves 21 , 25, indicators 32, 34 and/or transmitters merged and has two connections to the bunkering station, advantageously one connection end 12 to attach a flange and one welded connection end 13. Thus it possible to assemble the valve block 10 before taking it to the ship and the valve block is ready for install at the shipyard.
As can be seen from figures 3A - 3D the main bunkering valve 21 is an actuated ball valve with a T-bore. The nitrogen valve 25 is an actuated, extended two way valve. The main bunkering valve 21 is located in the main bunkering line 1 1 at location where the nitrogen line 15 joins to the main bunkering line 1 1 and the nitrogen valve 25 is located in the nitrogen line 15 at a distance from the location where the nitrogen line 15 joins to the main bunkering line 1 1 . Advantageously the nitrogen line 15 is perpendicular to the main bunkering line 1 1 . The actuators for the valves are advantageously pneumatic actuators or electrical actuators.
In figure 3A is schematically shown the valve system in normal or maintenance process stage. In this stage the main bunkering valve 21 and the nitrogen valve 25 are closed and thus no LNG nor nitrogen flows through the main bunkering valve 21 in the main bunkering line 1 1 and nor nitrogen flows through
the nitrogen valve 25 in the nitrogen valve. The end 12 of the main bunkering line 1 1 is closed.
In figure 3B is schematically shown the valve system in LNG filling process stage. When LNG is filled to the LNG tank (not shown) through the bunkering station 10 (fig. 1 ), the main bunkering valve 21 in the main bunkering line 1 1 is open and LNG filling hose 16 is connected to the end 12 to attach a flange of the main bunkering line 1 1 by its flanged connection 17. The nitrogen valve 25 of the nitrogen line 15 is closed. The fuel flow LNG is from the LNG supply to the LNG tank through the main bunkering valve 21 and the main bunkering line 1 1 .
In figure 3C is schematically shown the valve system in a flushing process stage, when nitrogen flushing is towards the LNG supply. When the filling stage is completed, the filling hose 16 and the hose-end 1 1 H of the main bunkering line 1 1 on the side of the filling hose 16 is flushed of possibly evapo- rated LNG in a hose flushing stage. During this hose flushing stage the LNG filling hose 16 is connected to the end 12 of the main bunkering line 1 1 by its flanged connection 17. The main bunkering valve 21 in the main bunkering line 1 1 is closed and the nitrogen valve 25 in the nitrogen line is open and nitrogen flushing flow N is towards the LNG supply. In figure 3D is schematically shown the valve system in a flushing process stage, when nitrogen flushing is towards the LNG tank. When the hose flushing stage (fig. 3C) is completed, the filling hose 16 is disconnected and the end 12 of the main bunkering line 1 1 is closed and the hose-end 1 1 H of the main bunkering line 1 1 and the tank sided end 1 1 T of the main bunkering line 1 1 is flushed of possibly evaporated LNG in a line flushing stage. The main bunkering valve 21 in the main bunkering line 1 1 is open and the nitrogen valve 25 in the nitrogen line is open and the nitrogen flushing flows NH, NT flush the main bunkering line 1 1 to the LNG tank.
Above only some advantageous examples of the invention have been de- scribed to which the invention is not to be narrowly limited. It is clear to one skilled in the art that many modifications and variations are possible with in the invention as defined in the following claims.
Reference signs used in the drawing
10 valve block of a bunkering station
1 1 main bunkering line (liquid fuel line; LNG line)
12 end to be attached to a filling hose
13 end to be attached to a tank line
15 nitrogen line
16 bunkering hose
17 flanged connection of the bunkering hose
21 main bunkering valve
25 nitrogen valve
31 thermal relief valve
32 pressure indicator / transmitter of the main bunkering line
33 spiral coil
34 pressure indicator of the nitrogen line
35 end of the nitrogen line
Claims
1 . Bunkering station comprising a main bunkering line (1 1 ) for liquid fuel and a nitrogen line (15) and valves (21 , 25) of the main bunkering line (1 1 ) and of the nitrogen line (15), characterized in that the main bun- kering line (1 1 ) has a main bunkering valve (21 ) and that the nitrogen line (15) has a nitrogen valve (25) and that the main bunkering valve and nitrogen valve (21 , 25) are merged to a valve block (10), which has two connections (12, 13) to the bunkering station.
2. Bunkering station according to claim 1 , characterized in that the nitrogen line (15) has only one nitrogen valve (25).
3. Bunkering station according to any of claims 1 or 2, characterized in that the nitrogen valve (25) is a two way valve and that the main bun- kering valve (21 ) is an actuated ball valve with a T-bore.
4. Bunkering station according to any of claims 1 to 3, characterized in that one of the two connections of the valve block (10) to the bunkering station is an end (12) to be attached to a filling hose and that the other of the two connections of the valve block (10) to the bunkering station is an end (13) to be connected to a tank line.
5. Bunkering station according to any of claims 1 to 4, characterized in that the valve block (10) of the bunkering station further comprises pressure indicators and/or transmitters (32) of the main bunkering line
(1 1 ) merged to the valve block (10).
6. Bunkering station according to any of claims 1 to 5, characterized in that the valve block (10) of the bunkering station further comprises a pressure indicator (34) of the nitrogen line (15) merged to the valve block (10).
7. Bunkering station according to any of claims 1 to 7, characterized in that the valve block (10) of the bunkering station further comprises re- lief valves (31 ) of the main bunkering line (1 1 ) merged to the valve block (10).
Bunkering station according to claim 4, characterized in that by the end (12) to be attached to the filling hose the valve block (10) is connected to a flanged connection (17) of a bunkering hose (16) of the bunkering station and by the end (13) the valve block (10) is connected by welding to main bunkering line (1 1 ) leading to a tank for liquid fuel, advantageously to an LNG tank.
Bunkering station according to claim 5, characterized in that the pressure indicators (32) are connected to the main bunkering line by spiral coils (33).
Bunkering station according to any of claims 1 to 9, characterized in that the valve block (10) of the bunkering station is assembled to one unit before taking it to the ship and is ready for install at the shipyard.
Bunkering station according to any of claims 1 to 10, characterized in that the main bunkering valve (21 ) is located in the main bunkering line (1 1 ) at location where the nitrogen line (15) joins to the main bunkering line (1 1 ) and that the nitrogen valve (25) is located in the nitrogen line (15) at a distance from the location where the nitrogen line (15) joins to the main bunkering line (1 1 ).
Method of operating a bunkering station comprising a main bunkering line (1 1 ) for liquid fuel and a nitrogen line (15) and valves (21 , 25) of the main bunkering line (1 1 ) and the nitrogen line (15), characterized in that the bunkering station, wherein the main bunkering line (1 1 ) has a main bunkering valve (21 ) and the nitrogen line (15) has a nitrogen valve (25) and the main bunkering valve and nitrogen valve (21 , 25) are merged to a valve block (10), which has two connections (12, 13) to the bunkering station, is operated in the method and that in the method in normal or maintenance process stage the main bunkering valve (21 ) and the nitrogen valve (25) are closed and thus no liquid fuel nor nitrogen flows through the main bunkering valve (21 ) in the main bunkering line (1 1 ) nor nitrogen flows through the nitrogen valve (25) in the nitrogen valve, that in liquid fuel filling stage the main bunkering valve (21 ) in the main bunkering line (1 1 ) is open and a liq-
uid fuel filling hose (16) is connected to the end 12 to be connected to a filling hose its connection (17) and the nitrogen valve (25) of the nitrogen line (15) is closed, whereby fuel flow is from the liquid fuel supply to the liquid fuel tank through the main bunkering valve (21 ) and the main bunkering line (1 1 ), that in a flushing stage, when nitrogen flushing is towards the liquid fuel supply and the liquid fuel filling hose is connected to the valve block (10), the main bunkering valve (21 ) in the main bunkering line (1 1 ) is closed and the nitrogen valve (25) in the nitrogen line is open, whereby nitrogen flushing flow (N) is towards the liquid fuel supply and that in a flushing process stage, when nitrogen flushing is towards the liquid fuel tank the filling hose (16) is disconnected and the connection end 12 to attach a flange (12) of the main bunkering line (1 1 ) is closed, the main bunkering valve (21 ) in the main bunkering line (1 1 ) is open and the nitrogen valve (25) in the nitrogen line is open, whereby the nitrogen flushing flows (NH, NT) flush the main bunkering line (1 1 ) to the liquid fuel tank.
A ship comprising a bunkering station according to any of claims 1 to
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2014/050440 WO2015185788A1 (en) | 2014-06-02 | 2014-06-02 | Bunkering station and method of operating a bunkering station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2014/050440 WO2015185788A1 (en) | 2014-06-02 | 2014-06-02 | Bunkering station and method of operating a bunkering station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015185788A1 true WO2015185788A1 (en) | 2015-12-10 |
Family
ID=51134122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FI2014/050440 WO2015185788A1 (en) | 2014-06-02 | 2014-06-02 | Bunkering station and method of operating a bunkering station |
Country Status (1)
| Country | Link |
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| WO (1) | WO2015185788A1 (en) |
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|---|---|---|---|---|
| JPS6088298A (en) * | 1983-10-21 | 1985-05-18 | Niigata Eng Co Ltd | Fluid loading method |
| US6347644B1 (en) * | 2000-03-03 | 2002-02-19 | Chemical Engineering Corporation | Bypass valve for water treatment system |
| WO2005031200A1 (en) * | 2003-09-23 | 2005-04-07 | Webstone Company, Inc. | Isolation valve with valve in drain |
| EP1710206A1 (en) * | 2000-10-06 | 2006-10-11 | Societe Europeenne D'Ingenierie Mecanique: Eurodim | System for transferring a fluid product between a carrying vessel and a shore installation |
| US20070089791A1 (en) * | 2005-10-20 | 2007-04-26 | Jon Gohde | Meter bar and metering system |
| WO2010012409A1 (en) * | 2008-07-31 | 2010-02-04 | Gea Tuchenhagen Gmbh | Device for the piping of process systems in the food and beverage industry, and method for operating a device |
| US20100059128A1 (en) * | 2006-01-04 | 2010-03-11 | Webstone Company, Inc. | Purge/fill valve |
| US20110023984A1 (en) * | 2008-03-21 | 2011-02-03 | Yang-Sook Lee | Water supply apparatus for branching water pipe capable of controlling water supply |
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2014
- 2014-06-02 WO PCT/FI2014/050440 patent/WO2015185788A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6088298A (en) * | 1983-10-21 | 1985-05-18 | Niigata Eng Co Ltd | Fluid loading method |
| US6347644B1 (en) * | 2000-03-03 | 2002-02-19 | Chemical Engineering Corporation | Bypass valve for water treatment system |
| EP1710206A1 (en) * | 2000-10-06 | 2006-10-11 | Societe Europeenne D'Ingenierie Mecanique: Eurodim | System for transferring a fluid product between a carrying vessel and a shore installation |
| WO2005031200A1 (en) * | 2003-09-23 | 2005-04-07 | Webstone Company, Inc. | Isolation valve with valve in drain |
| US20070089791A1 (en) * | 2005-10-20 | 2007-04-26 | Jon Gohde | Meter bar and metering system |
| US20100059128A1 (en) * | 2006-01-04 | 2010-03-11 | Webstone Company, Inc. | Purge/fill valve |
| US20110023984A1 (en) * | 2008-03-21 | 2011-02-03 | Yang-Sook Lee | Water supply apparatus for branching water pipe capable of controlling water supply |
| WO2010012409A1 (en) * | 2008-07-31 | 2010-02-04 | Gea Tuchenhagen Gmbh | Device for the piping of process systems in the food and beverage industry, and method for operating a device |
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