# US 9,751,606 B2 · Apparatus and method for transferring inflammable material on marine structure

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- Number: US 9,751,606 B2
- Document ID: US9751606B2
- Status: Granted
- Kind: B2
- Application number: 14/874,323
- Filed: 2015-10-02
- Published: 2016-02-25
- Granted: 2017-09-05
- Earliest claimed: 2013-09-17
- Assignees: Daewoo Shipbuilding & Marine Engineerig Co., Ltd.
- Applicants: Daewoo Shipbuilding & Marine Engineering Co., Ltd.
- Inventors: Joon Chae Lee; Jae Ho Jang; Chang Woo Lee; Nak Hyun Kim; Dong Eok Kang
- Web page: https://patentgrep.com/patent/US9751606B2

## CPC

- B63H 21/38: Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like ({in outboard drives B63H20/001; } lubricating or cooling machines or engines in general F01 - F04)
- B63B 21/14: Hawse-holes; Hawse-pipes; Hawse-hole closures
- B63B 25/12: closed
- B63B 25/16: heat-insulated (insulating panelling B63B3/68; heating or cooling B63J)
- F02M 21/0221: {Fuel storage reservoirs, e.g. cryogenic tanks}
- F02M 21/06: Apparatus for de-liquefying, e.g. by heating
- F02M 31/18: to vaporise fuel
- F02M 37/043: {Arrangements for driving reciprocating piston-type pumps}
- F02M 37/06: mechanically driven
- F04B 19/22: of reciprocating-piston type
- F04B 23/025: {the pump being located directly adjacent the reservoir}
- F04B 23/04: Combinations of two or more pumps
- F15B 11/17: using two or more pumps
- F15B 13/06: for use with two or more servomotors
- F15B 2211/20576: with multiple pumps
- Y02T 10/12: Improving ICE efficiencies
- Y02T 10/30: Use of alternative fuels, e.g. biofuels
- B63H: MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00)
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A system for supplying fuel to an engine of a ship. The system includes a high pressure pump pressurizing a liquefied natural gas (LNG) and supplying the pressurized LNG to the engine, a hydraulic motor driving the high pressure pump and a chamber carrying the high pressure pump and the hydraulic motor. The chamber is substantially free of electric sparks.

## Claims

### Claim 1

A ship comprising:
at least one fuel tank containing fuel;
a fuel pump in fluid communication with the at least one fuel tank and configured to pressurize fuel from the at least one fuel tank;
a heater in fluid communication with the fuel pump and configured to heat pressurized fuel from the fuel pump;
an engine in fluid communication with the heater and configured to consume the fuel from the heater;
a fuel pump compartment enclosing the fuel pump and a hydraulic motor for powering the fuel pump such that fuel from the at least one fuel tank is pressurized within the fuel pump compartment, wherein no electric motor is enclosed within the fuel pump compartment; and
a fuel processing compartment enclosing the heater such that the pressurized fuel travels from the fuel pump compartment to the fuel processing compartment and is heated within the fuel processing compartment,
wherein the fuel pump compartment is air-tightly separated from the fuel processing compartment by at least one air-tight wall such that the fuel pump and the hydraulic motor are air-tightly isolated from the heater.

### Claim 2 (depends on 1)

The ship of claim 1, wherein the fuel pump is configured to pressurize fuel from the at least one fuel tank to a pressure in a range from 150 bar absolute (bar(a)) to 400 bar(a), wherein the engine comprises a supercritical fuel engine configured to consume the fuel in a supercritical state, wherein the heater is configured to heat the pressurized fuel from the fuel pump to a supercritical state of the fuel, wherein the fuel pump compartment comprises a first air inlet configured to receive air from outside the ship and a first air outlet configured to discharge air from the fuel pump compartment, wherein the air from the outside the ship is to enter the fuel pump compartment through the first air inlet substantially free of mixing with air from another compartment of the ship.

### Claim 3 (depends on 1)

The ship of claim 1, further comprising a hydraulic pump located outside the fuel pump compartment and configured to convert mechanical power into a pressurized flow of a hydraulic fluid, wherein the pressurized flow is supplied to the hydraulic motor enclosed within the fuel pump compartment, wherein the hydraulic motor is configured to convert the pressurized flow into torque to power the fuel pump.

### Claim 4 (depends on 3)

The ship of claim 3, further comprising:
lubricant conduits in fluid communication with the hydraulic pump and configured to supply at least part of the fluid as lubricant to either or both of the fuel pump and the hydraulic motor, wherein the lubricant conduits pass through at least one air-tight wall; and
a lubricant pump configured to pump the lubricant to send the lubricant to either or both of the fuel pump and the hydraulic motor enclosed in the fuel pump compartment, wherein the lubricant pump is located outside the fuel pump compartment.

### Claim 5 (depends on 3)

The ship of claim 3, wherein the ship further comprises hydraulic fluid conduits interconnecting the hydraulic pump and the hydraulic motor to form a closed loop of the hydraulic fluid, wherein the hydraulic fluid conduits air-tightly pass through the at least one air-tight wall of the fuel pump compartment, wherein the fuel pump compartment comprises a first air inlet configured to receive air from outside the ship and a first air outlet configured to discharge air from the fuel pump compartment, wherein the air from the outside the ship is to enter the fuel pump compartment through the first air inlet substantially free of mixing with air from another compartment of the ship.

### Claim 6 (depends on 5)

The ship of claim 5, further comprising:
an electric motor configure to power pumping of the hydraulic pump; and
a hydraulic pump compartment enclosing the hydraulic pump and the electric motor such that the hydraulic fluid is pressurized within the hydraulic pump compartment and sent to the fuel pump compartment,
wherein the fuel pump compartment is air-tightly separated from the hydraulic pump compartment by at least one air-tight wall such that the fuel pump and the hydraulic motor are air-tightly isolated from the hydraulic pump.

### Claim 7 (depends on 6)

The ship of claim 6, further comprising:
a lubricant pump configured to pump lubricant to either or both of the fuel pump and the hydraulic motor enclosed in the fuel pump compartment;
a secondary hydraulic pump comprising an electric motor and configured to convert torque from the electric motor into a pressurized flow of a hydraulic fluid; and
a secondary hydraulic motor in fluid communication with the secondary hydraulic pump and configured to convert the pressurized flow from the secondary hydraulic pump into torque to power the lubricant pump,
wherein the lubricant pump is enclosed in the fuel pump compartment, wherein the secondary hydraulic pump is enclosed in the hydraulic pump compartment, wherein the secondary hydraulic motor is enclosed in the fuel pump compartment.

### Claim 8 (depends on 6)

The ship of claim 6, wherein the ship comprises a hull and a deck placed over the hull, wherein the fuel processing compartment and the fuel pump compartment are located above the deck of the ship, wherein the hydraulic pump compartment is located under the deck, wherein the ship further comprises.

### Claim 9 (depends on 6)

The ship of claim 6, further comprising a cofferdam or another distinct compartment interposed between the fuel pump compartment and the hydraulic pump compartment, wherein the hydraulic fluid conduits pass through the cofferdam or the other distinct compartment.

### Claim 10 (depends on 1)

The ship of claim 1, further comprising a cofferdam interposed between the fuel pump compartment and the hydraulic pump compartment, wherein the hydraulic fluid conduits does not pass through the cofferdam and instead goes around the cofferdam, wherein the fuel processing compartment and the fuel pump compartment are adjacent to each other and separated by the at least one wall only without any intervening compartment or cofferdam between the fuel pump compartment and the fuel processing compartment, wherein a down-stream line from the fuel pump to the heater does not pass through the at least one wall and instead goes around the at least one wall such that the down-stream line passes through another wall of the fuel pump compartment and another wall of the fuel processing compartment.

### Claim 11 (depends on 1)

The ship of claim 1, wherein the fuel pump compartment comprises a first air inlet configured to receive air from outside the ship and a first air outlet configured to discharge air from the fuel pump compartment, wherein the air from the outside the ship is to enter the fuel pump compartment through the first air inlet substantially free of mixing with air from another compartment of the ship.

### Claim 12 (depends on 11)

The ship of claim 11, wherein the fuel processing compartment comprises a second air inlet configured to receive air from outside the ship and a second air outlet configured to discharge air from the fuel processing compartment, wherein the air from the outside the ship is to enter the fuel processing compartment through the second air inlet substantially free of mixing with air from another compartment of the ship.

### Claim 13 (depends on 12)

The ship of claim 12, further comprising:
a first air intake conduit configured to receive air from outside the ship and transfer the air to the first air inlet; and
a second air intake conduit configured to receive air from outside the ship and transfer the air to the second air inlet, wherein the first and second air intake conduits are separate from each other and are not interconnected.

### Claim 14 (depends on 12)

The ship of claim 12, further comprising:
a first air discharge conduit configured to receive air from the first air outlet of the fuel pump compartment to outside the ship;
a first leak detector configured to be exposed to the air discharged from the fuel pump compartment and to detect leakage of fuel within the fuel pump compartment;
a second air discharge conduit configured to receive air from the second outlet of the fuel processing compartment outside the ship; and
a second leak detector configured to be exposed to air discharged from the fuel processing compartment and to detect leakage of fuel within the fuel pump compartment.

### Claim 15 (depends on 1)

The ship of claim 1, wherein the fuel pump and the hydraulic motor enclosed in the fuel pump compartment are built in an integrated body, wherein the fuel pump comprises a piston and a rotation-to-reciprocation converter configured to convert torque from the hydraulic motor to reciprocating motion of the piston.

### Claim 16 (depends on 1)

The ship of claim 1, wherein the ship comprises a hull and a deck placed over the hull, wherein the fuel processing compartment and the fuel pump compartment are adjacent to each other and separated by the at least one wall without any intervening compartment or cofferdam between the fuel pump compartment and the fuel, processing compartment, wherein a down-stream line from the fuel pump to the heater pass through the at least one wall.

### Claim 17 (depends on 1)

The ship of claim 1, wherein the heater comprises a heat exchanger configured to heat the pressurized fuel from the fuel pump, wherein the hydraulic pump comprises an electric motor configured to generate mechanical energy to power pumping to generate the pressurized flow of hydraulic fluid.

### Claim 18 (depends on 1)

The ship of claim 1, further comprising:
a vaporizer in fluid communication with the at least one fuel tank and configured to vaporize the fuel from the at least one fuel tank; and
a vapor fuel engine in fluid communication with the vaporizer and configured to consume the fuel from the vaporizer in its vapor state,
wherein the vaporizer is enclosed in the fuel processing compartment, wherein the fuel from the at, least one fuel tank is transferred to the vaporizer without going through the fuel pump compartment.

### Claim 19 (depends on 18)

The ship of claim 18, further comprising a mist separator in fluid communication with the vaporizer and configured to remove mists contained in the fuel from the vaporizer before the fuel is sent to the vapor fuel engine,
wherein the vaporizer comprises a heat exchanger configured to heat the fuel from the at least one fuel tank to provide the vaporized state of the fuel,
wherein the mist separator is also enclosed in the fuel processing compartment.

### Claim 20 (depends on 1)

The ship of claim 1, further comprising a lubricant pump configured to pump lubricant to either or both of the fuel pump and the hydraulic motor enclosed in the fuel pump compartment, wherein the lubricant pump is enclosed within or outside the fuel pump compartment.