CN203161377U - Gas fuel supply system of marine power plant - Google Patents
Gas fuel supply system of marine power plant Download PDFInfo
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- CN203161377U CN203161377U CN 201320035213 CN201320035213U CN203161377U CN 203161377 U CN203161377 U CN 203161377U CN 201320035213 CN201320035213 CN 201320035213 CN 201320035213 U CN201320035213 U CN 201320035213U CN 203161377 U CN203161377 U CN 203161377U
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Abstract
Provided is a gas fuel supply system of a marine power plant. The gas fuel supply system of the marine power plant is a fuel supply system using natural gas as fuel. A liquid storage pot cabinet is adopted by a liquid-gas converting unit, a liquid storage pot is arranged in the liquid storage pot cabinet, a liquid-gas converting cabinet is adopted by the liquid-gas converting unit, and a monitoring instrument panel used for monitoring the working state of the liquid storage pot, a pressurizing evaporator, a natural gas heater, an LNG vaporizer and a gas-liquid separator are arranged in the liquid-gas converting cabinet. Ethylene glycol aqueous solutions are adopted by a heating cycle unit to carry out heat exchange with circulating hot water of the marine power plant. Emptying valves are adopted by a fuel gas supply piping system emptying unit. A negative-pressure ventilation system is adopted by the liquid storage pot cabinet, the liquid-gas converting cabinet and fuel gas supply pipelines, a liquefied natural gas filling pipe and a liquefied natural gas output pipe are of an ultra-low temperature through cabin pipe fitting structure. The gas fuel supply system of the marine power plant solves the problems of storage, gasification, heating and pressurization of fuel of ships, particularly non-LNG transport ships, using liquefied natural gas as the fuel, and the problem that safe areas are built in cabins and closed areas.
Description
Technical field
The present invention relates to a kind of gaskraftstoffzufuhranlage of Ship Power Equipment, is to be the fuel supply system of fuel with the rock gas.
Background technique
In recent years, along with pollution of atmosphere is serious day by day, the whole world is to the serious day by day lattice of the control of the gas discharging of boats and ships.Developed countries such as America and Europe have set up the control zone of oneself, reach TierII and TierIII emission standard at the appointed time.For solving the severe contamination problem in the Changjiang river and Zhujiang River waters, Chinese Government has planned " gasification the Changjiang river " and " the gasification Zhujiang River " engineering in 12 planning.
The boats and ships natural gas fuel can reduce the fuel cost of carbon emission more than 30% and discharged nitrous oxides, the sulfide emission more than 98% and about 30%.Therefore, to use rock gas instead be that fuel is energy-saving and emission-reduction, improves the most directly effective measures of transport benefits to boats and ships.In recent years, nearly all shipowner is considering that it is the boats and ships of main fuel that its existing ship is transformed into LNG, and being transformed at least with LNG is the boats and ships of auxiliary fuel, in order to can use LNG in various countries' emission control district, reaches emission standard.Nearly all shipyard is the various boats and ships of fuel consider building with LNG all, and China first be that the double fuel tugboat project of main fuel has begun to build with LNG, provide LNG fuel storage supply system by our company, adopt the low service system of our company.
The LNG fuel requirement is through gasification heating, is transformed into the requirement that gas more than 0 ℃ could satisfy the cabin power plant from about-160 ℃ liquid state.Gasification and heating process need heat energy, and heating source need utilize the used heat of cabin power plant.
The land adopts engineering machinery and the vehicle of LNG effect fuel to begin gradually to popularize at present, though the boats and ships installing gaseous fuel machine of only a few is arranged in the boats and ships that put into effect in the world at present and adopts LNG to act as a fuel, but still be in the starting stage, and almost based on the LNG cargo ship.Why the LNG ship adopts the gaseous fuel machine to be because the shipping of this boat-carrying fortune is LNG, can be directly with the goods steam as fuel, avoid can saving energy consumption to the processing of liquefying again of the boil-off gas in the cargo hold.Therefore this ship does not need to set up the fuel liquid container that LNG is stored again separately.Because LNG belongs to highly dangerous product, and need under ultralow temperature, to store, boats and ships use LNG and exist a lot of problems, particularly for non-LNG ship (as: Bulk carrier, Container ship, oil carrier, passenger boat, tugboat etc.), when store ultralow temperature LNG fuel at these ships, need through special consideration, as: hull structure, fire resisting division, hazardous area are divided, operation and these factors such as Security of using all need to take into account, and will cause great influence to boats and ships and personnel's safety in case LNG takes place to leak.At present various countries require very strictly to the ship survey of installing gaseous fuel main frame, and have formulated corresponding pact and standard instructs layout and the system's design aboard ship of gaseous fuel main frame and combustion gas storage and supply system equipment.The at present domestic experience of still not having in non-LNG ship construction, installation gaseous fuel supply system.
Because the relative terrestrial environment of working environment of boats and ships is more abominable, needs to consider various complex working conditions in the design of shipborne equipment and in using, and need can adopt effective emergency processing measure at various fortuitous events.Especially the safety requirement grade to equipment is very high.
Summary of the invention
In order to overcome problems of the prior art, the invention provides a kind of gaskraftstoffzufuhranlage of Ship Power Equipment, be used for solving with LNG Liquefied natural gas (LNG) is the boats and ships of main or auxiliary fuel, be fuel storage, gasification, heating, the pressurization of non-LNG ships that transport especially, and set up difficult problems such as safety zone in cabin and sealing place.
The technical solution adopted in the present invention is: a kind of gaskraftstoffzufuhranlage of Ship Power Equipment, it comprises a liquid-gas shift unit and Heating Cyclic unit, it also comprises a fuel gas supply piping emptying unit, described liquid-gas shift unit adopts the liquid container bin that liquid container is set, adopt liquid-gas shift bin that the monitor dash board that monitors the liquid container working state is set, the supercharging vaporizer, gas heater, LNG vaporizer and gas-liquid separator, the top of described liquid container is provided with the LNG Liquefied natural gas ascending pipe, the bottom is provided with two-way LNG Liquefied natural gas output tube, one the tunnel connects the import of supercharging vaporizer, the outlet of supercharging vaporizer connects upper chamber and the outer gas phase pipeline of liquid-gas shift bin of liquid container, another road connects the LNG vaporizer successively, gas heater and gas-liquid separator, the outlet of gas-liquid separator connects the fuel gas supply pipeline of liquid-gas shift bin outer power device; It is heat transferring medium that described Heating Cyclic unit adopts antifreeze liquid, a swelling water tank connects two heat exchangers and electric heater of two circulating water pump in parallel, parallel connection successively, the outlet of electric heater connects the antifreeze liquid import of supercharging vaporizer, gas heater and LNG vaporizer respectively, the antifreeze liquid outlet of supercharging vaporizer, gas heater and LNG vaporizer is connected with the import of circulating water pump, and heat exchanger is connected with the circulating hot water piping of power plant; Described fuel gas supply piping emptying unit adopts main gas valve to connect first stop valve, second stop valve and power plant successively, in the both sides of first stop valve first atmospheric valve and second atmospheric valve is set respectively; Described liquid container bin, liquid-gas shift bin and fuel gas supply pipeline adopt the negative pressure ventilation system, and described LNG Liquefied natural gas ascending pipe and LNG Liquefied natural gas output tube adopt ultralow temperature pipe penetration piece structure; Described liquid container bin and the liquid-inside of gas shift bin is provided with the drip tray of a stainless steel structure, and drip tray adopts a stainless steel supporting structure to be welded on the base plate of bin, and the area of drip tray covers and has the zone of leaking.
Described swelling water tank is provided with antifreeze liquid and nitrogen fills interface, and swelling water tank adopts nitrogen pressure and is arranged in the safety zone, makes heat medium circulation continuously between safety zone and hazardous area.
Described negative pressure ventilation system adopts fuel gas supply pipeline overcoat dress ventilation duct, and ventilation duct and liquid container bin and liquid-gas shift bin is connected in series, and ventilation tubing one end is established the ventilation suction inlet, and the other end is arranged in parallel two axial-flow blowers.
Suit vacuum insulation outer tube outside described ultralow temperature pipe penetration piece adopts and manages in vacuum insulation, the vacuum insulation outer tube is fixed on the bulkhead by backing plate or sleeve pipe.
The heat exchange unit of described supercharging vaporizer, gas heater and LNG vaporizer adopts one or more heat exchanging tube coiling coil pipes, and layering is enumerated, and integral arrangement is in a urceolus.
The internal unit of described liquid container bin and liquid-gas shift bin adopts and is bolted on the drip tray, and one of screw is passed from tapping, and nut and drip tray weld together firmly.
The beneficial effect that the present invention reaches is: the gaskraftstoffzufuhranlage of this Ship Power Equipment, liquid-gas shift unit adopts the liquid container bin that liquid container is set, and adopts liquid-gas shift bin that monitor dash board, supercharging vaporizer, gas heater, LNG vaporizer and the gas-liquid separator that monitors the liquid container working state is set.Heating Cyclic unit employing antifreeze liquid is that the circulating hot water of heat transferring medium and power plant carries out heat exchange.Fuel gas supply piping emptying unit adopts atmospheric valve.Liquid container bin, liquid-gas shift bin and fuel gas supply pipeline adopt the negative pressure ventilation system, and LNG Liquefied natural gas ascending pipe and LNG Liquefied natural gas output tube adopt ultralow temperature pipe penetration piece structure.It is the boats and ships of main or auxiliary fuel that this gaskraftstoffzufuhranlage has solved with LNG Liquefied natural gas (LNG), is fuel storage, gasification, heating, the pressurization of non-LNG ships that transport especially, and sets up difficult problems such as safety zone in cabin and sealing place.
Description of drawings
The present invention is further described below in conjunction with the drawings and specific embodiments
Fig. 1 is a kind of gaskraftstoffzufuhranlage figure of Ship Power Equipment.
Fig. 2 is liquid-gas shift cellular system figure.
Fig. 3 is antifreeze liquid Heating Cyclic cellular system figure.
Fig. 4 is fuel gas supply piping emptying modular construction figure.
Fig. 5 is negative pressure ventilation partial structurtes figure.
Fig. 6 is ultralow temperature pipe penetration piece structural drawing.
Fig. 7 is the spiral coil structural drawing of heater.
Among the figure: 1, liquid-gas shift unit, 1a, liquid container, 1b, the monitor dash board, 1c, the supercharging vaporizer, 1d, gas heater, 1e, the LNG vaporizer, 1f, gas-liquid separator, 2, the Heating Cyclic unit, 2a, swelling water tank, 2b, circulating water pump, 2c, heat exchanger, 2d, electric heater, 3, fuel gas supply piping emptying unit, 3a, main gas valve, 3b, first stop valve, 3c, second stop valve, 3d, first atmospheric valve, 3e, second atmospheric valve, 4, the fuel gas supply pipeline, 5, ventilation duct, 6, axial-flow blower, 7, register, 8, cowl, 9, pipe in the vacuum insulation, 10, the vacuum insulation outer tube, 11, backing plate, 12, bulkhead, 13, spiral coil; G1, liquid container bin, G2, liquid-gas shift bin.
Embodiment
Fig. 1 shows a kind of gaskraftstoffzufuhranlage figure of Ship Power Equipment.Among the figure, the gaskraftstoffzufuhranlage of Ship Power Equipment comprises a liquid-gas shift unit 1, Heating Cyclic unit 2 and fuel gas supply piping emptying unit 3.
Liquid-gas shift unit 1(is as shown in Figure 2) adopt liquid container bin G1 that liquid container 1a is set, adopt liquid-gas shift bin G2 that the monitor dash board 1b that monitors liquid container 1a working state is set, supercharging vaporizer 1c, gas heater 1d, LNG vaporizer 1e and gas-liquid separator 1f, the top of liquid container 1a is provided with the LNG Liquefied natural gas ascending pipe, the bottom is provided with two-way LNG Liquefied natural gas output tube, one the tunnel connects the import of supercharging vaporizer 1c, the outlet of supercharging vaporizer 1c connects upper chamber and the outer gas phase pipeline of liquid-gas shift bin G2 of liquid container 1a, another road connects LNG vaporizer 1e successively, gas heater 1d and gas-liquid separator 1f, the outlet of gas-liquid separator 1f connects the fuel gas supply pipeline of liquid-gas shift bin G2 outer power device.
Heating Cyclic unit 2(is as shown in Figure 3) employing antifreeze liquid is heat transferring medium, antifreeze liquid adopt volume be the ethylene glycol of 30-70% and 70-30% the water preparation, adopting volume is that the water preparation of 50% ethylene glycol and 50% is comparatively commonly used.Swelling water tank 2a is provided with antifreeze liquid and nitrogen fills interface, swelling water tank 2a connects two heat exchanger 2c and electric heater 2d of two circulating water pump 2b in parallel, parallel connection successively, the outlet of electric heater (2d) connects the antifreeze liquid import of supercharging vaporizer 1c, gas heater 1d and LNG vaporizer 1e respectively, the antifreeze liquid outlet of supercharging vaporizer 1c, gas heater 1d and LNG vaporizer 1e is connected with the import of circulating water pump 2b, and heat exchanger 2c is connected with the circulating hot water piping of power plant.
Fuel gas supply piping emptying unit 3(is as shown in Figure 4) adopt main gas valve 3a to connect the first stop valve 3b, second stop valve 3c and the power plant successively, the first atmospheric valve 3d and the second atmospheric valve 3e are set respectively in the both sides of the first stop valve 3b.
Negative pressure ventilation system (as shown in Figure 5) adopts fuel gas supply pipeline 4 outer suit ventilation ducts 5, and ventilation duct 5 is connected in series with liquid container bin G1 and liquid-gas shift bin G2, and ventilation tubing one end is established the ventilation suction inlet, and the other end is arranged in parallel two axial-flow blowers 6.
Ultralow temperature pipe penetration piece (as shown in Figure 6) adopts manages suit vacuum insulation outer tube 10 outside 9 in vacuum insulation, vacuum insulation outer tube 10 is fixed on the bulkhead 12 by backing plate 11.
The heat exchange unit of supercharging vaporizer 1c, gas heater 1d and LNG vaporizer 1e adopts spiral coil 13(as shown in Figure 7).
Adopt technique scheme, the working principle of the gaskraftstoffzufuhranlage of Ship Power Equipment is: filling of LNG fuel is to be connected fuel up in the LNG liquid container with on the bank tank car or aerating ship by the LNG fueling station on the ship, LNG Liquefied natural gas is stored in the pressure type LNG liquid container, is used for to double fuel main frame (being also incendivity rock gas of incendivity fuel oil) or single gaseous fuel main frame supply combustion gas.When main frame is started working, need use being supplied to main frame to regard fuel after liquefied natural gas gasifying, the heating.Because the main frame of different manufacturers has corresponding requirement to supply gas pressure and the temperature of fuel gas, what the fuel gas that for this reason needs to install a cover gas gasification and heating unit liquid towards handled to satisfy main frame uses the gas demand.This system is provided with the auxiliary heating unit of antifreeze liquid LNG gasification and heater are carried out heat exchange, existing heat medium on the recycling ship: the steam that produces as main frame jacket water, central cooling water, seawater, exhaust boiler etc. carries out heat treated to the antifreeze liquid system.Require to be further detailed below in conjunction with operation technique:
One, LNG fuel fueling station
For ease of being connected with on the bank LNG filling equipment on the ship, be provided with LNG fuel fueling station aboard ship.Fueling station is provided with a cover liquid phase and fills pipeline and a cover gas phase vapor return line, respectively is provided with hand stop valve and rapid cut-off valve on two circuits, can fill control station station and telecontrol rapid cut-off valve at LNG.Filling pressure gauge and the thermometer that is provided with demonstration on the spot between pipeline and the logical bank joint, for ease of monitoring that at long-range (central station of floating dock or operator cabin) LNG fills the pressure and temperature of pipeline, can fill pipeline at fuel and install pressure and temperature transmitter, be used for telemonitoring.
Below the LNG charging joint and the place that may occur leaking be provided with drip tray, this drip tray can be made up of stainless steel or other low temperature materials, when being used for filling operation, is unlikely to the boats and ships steel plate is impacted just in case leakage occurs.Be provided with simultaneously the anti-protective measure of splashing at the charging joint place, prevent that the liquid that splashes out or gas from impacting hull plate on every side.The anti-spray at LNG charging joint place and the anti-device that splashes can be designed to portable or fixed, and piece cover is at the charging joint place.
Be provided with near the LNG fueling station and fill control station, this fills control station and is positioned at the safety zone, when being used for filling operation the pressure of LNG liquid container is monitored.This fills control station and is provided with high pressure and high liquid level warning indication simultaneously, and the alarm when being used for filling operation fills control station and is provided with emergency stop button for all gas valves of emergency cut-off.
The LNG fueling station has multiple pairing joint, and the one side of this joint is connected with the joint of fueling station, can be complementary with the LNG air filling gun on the other hand or be complementary with the joint of aerating ship.This design can effectively solve with different aerating equipment between connection.
Two, LNG fuel reservoir
The LNG liquid container is made up of low temperature material, satisfy the minimum operating temperature of medium, the LNG liquid container can adopt two vacuum insulation jars (vacuumizing fill insulant material or high vacuum multi-lay winding between interior jar and outer jar), also can adopt appearance to lay the pressure liquid container of heat insulation layer (material of heat insulation layer and thickness will be decided on concrete situation).Concrete which kind of liquid container that adopts will be decided on concrete situation.The LNG liquid container can be installed on the open deck or be installed in the enclosed spaces, and the design of LNG liquid container must be satisfied standard peculiar to vessel with manufacturing, must obtain certificate of products for marine service.
The design pressure of LNG liquid container can be decided according to actual conditions, for the less liquid container of volume, the design pressure of liquid container can the supply gas pressure 2～5Bar greater than main frame about, but be no more than 1.0MPa usually.For this liquid container, the maximum vapor tension that can directly utilize liquid container can bear is supplied with main frame with the fluid discharge in the jar to " gas gasification and the heating unit " heat treated that gasifies.
For the bigger liquid container of volume: because the increase of design pressure can directly cause the increase of material, and then cause the increase of construction cost, do not have economical.The design pressure of common this liquid container is lower, less than the supply gas pressure of main frame.Need carry out supplying with main frame after the supercharging to combustion gas.
Liquid container is provided with the ventilative pipeline of a cover, and ventilative pipeline is provided with 2 cover safety relief valves, is provided with manually and automatic vent valve the safety protection when being used for the liquid container high pressure simultaneously.When the liquid container working pressure reaches setting pressure, but the pressure in the automatic vent valve toilet-cleaning jar of remote opening, the perhaps pressure in the manually opened vent valve toilet-cleaning jar in this locality.
The LNG liquid container is provided with liquid level/temperature/pressure monitoring device, is used for local and long-range liquid container is monitored.Simultaneously at long-range pressure, temperature and the liquid level warning of realizing liquid container.
The LNG liquid container is provided with a cover self-supercharging device, and liquid container is carried out pressurized treatment.Liquid utilization deadweight in the liquid container flow in the supercharging additional issue device, through entering the gas-phase space of liquid container after the gasification.Working pressure by self-supercharging device control liquid container is slightly larger than the supply gas pressure of main frame usually in constant scope.Utilize in the liquid container pressure of gas that the fluid discharge in the jar to " gas gasification and heating unit " gasified and heat the back and supply with main frame and regard fuel.This self-supercharging device also can be used in emergency circumstances the liquid in the LNG liquid container being transferred to receiving terminal on the bank or releases goods is emergent simultaneously.
Three, gas gasification and heating unit
Gas gasification and heating unit are made up of LNG vaporizer and heater, and LNG vaporizer and heater can adopt shell and tube heat exchanger or plate type heat exchanger.Can adopt helical disk tubular type heat exchanger as preferred version, adopt one or more heat exchanging tube coileds, layering is enumerated, and integral arrangement is in a urceolus.Liquid state and natural gas in gaseous state walk to manage side, and heat medium is walked shell-side, carry out heat exchange.Adopt the spiral coil structure effectively to reduce joint quantity, it is minimum that the possibility that produces leakage is down to, and helix structure can be avoided because the structural stress that expands with heat and contract with cold and produce resupplies main frame through the combustion gas after the processing of LNG gasification/heater simultaneously.Be provided with a cover gas-liquid separation detection device at the gas supply pipeline, in case the ethylene glycol solution gas side that bleeds is arranged, the liquid that enters fuel gas pipeline will be separated in this device, prevent from damaging using jet power unit, send alarm when the liquid level of separating reaches predetermined altitude.This segregating unit also can play the effect of buffering simultaneously, avoids causing because of the variation of main unit load the fluctuation of air feed.
Integral installation and layout for ease of equipment, can be with " gas gasification and heating unit " and the pipeline, joint and the valve integral installation that link to each other with the LNG liquid container in a low temperature resistant stainless bin, this stainless steel bin can be installed in the cabin or be arranged to a similar bin that is welded on fully on the fuel cabinet shell.Needing needs to install combustible gas detecting and fire detector unit, for monitoring in the control room and reporting to the police simultaneously to processings of ventilating of this bin in this bin.
Because directly (perhaps passing through supporting element) and hull structure steel plate link together this bin usually, for preventing that LNG leaks to the bottom in this bin the hull plate intensity that is attached thereto is impacted, for this reason, be provided with the drip tray of a stainless steel structure in the inside of this bin, this drip tray adopts a stainless steel supporting structure to be welded on the bin base plate, the area of this drip tray should be able to cover LNG vaporizer/heater, and may there be the place of leakage in LNG valve and pipe joint place.LNG vaporizer/heater adopts and is bolted on this drip tray, leaks from the drip tray tapping for preventing liquid, and one of screw is passed from tapping, and of six sides welds together firmly with drip tray.Thereby avoided the leakage at this place.Be provided with liquid port in the installation of drip tray position lowest part, this place is provided with temperature transducer, for detection of the leakage of LNG.In case the generation leak of liquid sends alarm signal at control station, close jar last all outlet valves simultaneously automatically.Under crewman's supervision, the liquid in the drip tray is transferred to a comparatively safe place subsequently.Simultaneously be provided with a liquid-level switch at this liquid port place, be used for this place's condensed water high liquid level warning.
Four, the auxiliary heating unit of antifreeze liquid
For make system energy consumption reach minimum as far as possible, utilize the used heat of cabin power plant as far as possible, the steam that produces as main frame jacket water, central cooling water, seawater, exhaust boiler etc. heats LNG vaporizer and heater.Select which kind of heat medium for use about LNG vaporizer and heater actually, should look different ship type, the zone that the configuring condition of equipment on board and this ship type navigate by water and deciding.
As preferred version: if can provide effective steam on the ship, can directly utilize steam that LNG vaporizer and heater are heated, this system is the most succinct also the most effective.
As a kind of design proposal: can adopt " antifreeze liquid circulation heating unit " that LNG vaporizer and heater are heated, recycling main frame jacket water, central cooling water or seawater heat antifreeze liquid.She Ji purpose is like this: because the operating temperature of LNG under normal pressure is-163 ℃, the freezing point of the mixed solution of " 50% ethylene glycol+50% water " can reach about-40 ℃, utilize " ethylene glycol+water " mixed solution as the intermediate medium of gasification/heating, and ethylene glycol is safe solution, does not need to take any safety measure.Therefore can effectively avoid LNG approaching side tube wall because icing phenomenon appears in local overcooling, improve heat exchange efficiency.
If adopt above-mentioned " antifreeze liquid heating unit ", for low pressure air supply system (supply gas pressure of combustion gas is less than 1.0MPa usually), this system is by a cover swelling water tank, two standby recycle pump, two standby heat exchanger (steam heating, high temperature or the heating of low temperature fresh water, electric heating), system valve each other each other, compositions such as instrumentation and control system.For preventing that the combustion gas in LNG vaporizer and the heater from entering into the antifreeze liquid system, can adopt the mode of nitrogen pressure to make the working pressure of medium in the antifreeze liquid system greater than the pressure of burning line, like this, even leaking appears in burning line, do not have escape of gas to the antifreeze liquid system yet.Swelling water tank is according to the standard design of pressurized container, be provided with safety valve, in swelling water tank, charge into nitrogen, guarantee that nitrogen gas pressure is greater than the supply gas pressure of burning line, low liquid level warning, pressure measurement and warning are set in the swelling water tank, are used for liquid level and nitrogen gas pressure in the monitoring swelling water tank.When the pressure low-pressure setting value of swelling water tank, output alarm is also carried out corresponding action.For this design proposal, then antifreeze liquid circulation heating unit can be installed in safety zone (cabin).Like this, all electrical equipment and instrument need not explosion-proof.
Five, ventilation and gas venting system design:
The security consideration of native system: pipeline, valve member, equipment that may produce combustible gas leakage etc. is installed in one or more airtight ventilation flues, bigger equipment (as heat exchanger etc.) is installed in the airtight chest, pipeline, valve member etc. avoid flange to connect as far as possible, need the joint to adopt the pipe butt welding.All airtight air channels and Sealing Arrangement case etc. connect by serial fashion, establish one or two Electric Explosion-proof induced draft fan at ventilative mast place, as preferred version, 2 cover explosion-proof fans are set usually, the using and the reserved satisfy air-conditioning requirement, in case after a typhoon machine breaks down, can another typhoon machine of emergency start.Because the difference of ventilation flue and intake grill circulation area keeps negative pressure (being lower than atmospheric pressure) in the ventilation flue that is cascaded and the equipment box always.Such structural configuration has been guaranteed the gas of any leakage, comprises more short-range " dead angle ", and it is distinguished and admirable to spread and enter exhausting in time.The ducting outlet place is provided with the combustible gas detecting device, can in time find combustible gas leakage.The ventilative head of ventilative masthead end adopts specialized structure, can prevent that rainwater from entering, and can make airflow direction vertically upward again.Ventilation duct can be made and other similar structure in engine room ventilation road, low cost of manufacture.
Six, control system
Be provided with near the LNG fueling station and fill control station, this fills control station and is positioned at the safety zone, when being used for filling operation the pressure of LNG liquid container is monitored.This fills control station and is provided with high pressure and high liquid level warning indication, and the alarm when being used for filling operation fills control station and is provided with emergency stop button for all gas valves of emergency cut-off.As a kind of safer protective measure, be provided with a cover cable interface filling control station, is connected with emergency stop button by cable, filling when operating, this emergency stop button can be connected on the bank, for closeall gas valve on the coast.This emergency stop button also can be connected with interface on the bank, by all gas valves of the signal at stop that provides on the bank.
Aboard ship the position of a safety (as central station of floating dock or operator cabin) is provided with a cover main control station for centralized control and management to whole system.The demonstration data of the running state of system and necessity and alarm logging etc. carry out unified management at main control station.Be provided with cover monitoring and a warning panel at bridge, but the running state of synchronous display system and warning message.On main control station and bridge alarm board, all be provided with cover emergency stop button and a main gas valve stop button.Emergency stop button is used for all gas valves of emergency cut-off, and main gas valve stop button is used for the main gas valve of manual-lock gas supply.
Seven, ultralow temperature pipeline crossing cabin wall construction
For preventing cryogenic pipe crossing cabin wall place because the hull plate that the heat transfer of pipeline causes this place to be attached thereto bears low temperature, as priority scheme, can can adopt the high-vacuum insulation pipe at cryogenic pipe crossing cabin wall place, inner and outer pipes all adopts low temperature material, fill insulant material between the inner and outer pipes.At the outer tube of the vacuum heat-insulating pipe round backing plate of burn-oning, directly be welded on the hull structure (bulkhead or Main deck) by this backing plate.Adopt vacuum heat-insulating pipe not only effectively to solve being connected of cryogenic pipe and hull plate, and its heat insulation effect is better than adopting and wrap up this heat preserving mode of thermal insulating material.
Eight, two by two emptying structure aspects:
The gas supply pipeline before entering the cabin, arrange one two by (or three by) two emptying structural configuration, prevent that any one valve member is not closed completely and produces leakage, when the corresponding power plant in cabin do not need air feed, inflammable gas in the gas supply pipeline can be discharged fast by ventilative mast, prevent that the gas in the pipeline from entering cabin or safety zone.
Claims (6)
1. the gaskraftstoffzufuhranlage of a Ship Power Equipment, it comprises a liquid-gas shift unit (1) and Heating Cyclic unit (2), it is characterized in that: it also comprises a fuel gas supply piping emptying unit (3), described liquid-gas shift unit (1) adopts liquid container bin (G1) that liquid container (1a) is set, adopt liquid-gas shift bin (G2) that the monitor dash board (1b) that monitors liquid container (1a) working state is set, supercharging vaporizer (1c), gas heater (1d), LNG vaporizer (1e) and gas-liquid separator (1f), the top of described liquid container (1a) is provided with the LNG Liquefied natural gas ascending pipe, the bottom is provided with two-way LNG Liquefied natural gas output tube, one the tunnel connects the import of supercharging vaporizer (1c), the outlet of supercharging vaporizer (1c) connects upper chamber and the outer gas phase pipeline of liquid-gas shift bin (G2) of liquid container (1a), another road connects LNG vaporizer (1e) successively, gas heater (1d) and gas-liquid separator (1f), the outlet of gas-liquid separator (1f) connects the fuel gas supply pipeline of liquid-gas shift bin (G2) outer power device; It is heat transferring medium that described Heating Cyclic unit (2) adopts antifreeze liquid, a swelling water tank (2a) connects two circulating water pump (2b) in parallel successively, two heat exchangers (2c) and an electric heater (2d) in parallel, the outlet of electric heater (2d) connects supercharging vaporizer (1c) respectively, the antifreeze liquid import of gas heater (1d) and LNG vaporizer (1e), supercharging vaporizer (1c), the antifreeze liquid outlet of gas heater (1d) and LNG vaporizer (1e) is connected with the import of circulating water pump (2b), and heat exchanger (2c) is connected with the circulating hot water piping of power plant; Described fuel gas supply piping emptying unit (3) adopts main gas valve (3a) to connect first stop valve (3b), second stop valve (3c) and power plant successively, and first atmospheric valve (3d) and second atmospheric valve (3e) are set respectively in the both sides of first stop valve (3b); Described liquid container bin (G1), liquid-gas shift bin (G2) and fuel gas supply pipeline adopt the negative pressure ventilation system, and described LNG Liquefied natural gas ascending pipe and LNG Liquefied natural gas output tube adopt ultralow temperature pipe penetration piece structure; The inside of described liquid container bin (G1) and liquid-gas shift bin (G2) is provided with the drip tray of a stainless steel structure, and drip tray adopts a stainless steel supporting structure to be welded on the base plate of bin, and the area of drip tray covers and has the zone of leaking.
2. the gaskraftstoffzufuhranlage of a kind of Ship Power Equipment according to claim 1, it is characterized in that: described swelling water tank (2a) is provided with antifreeze liquid and nitrogen fills interface, swelling water tank (2a) adopts nitrogen pressure and is arranged in the safety zone, makes heat medium circulation continuously between safety zone and hazardous area.
3. the gaskraftstoffzufuhranlage of a kind of Ship Power Equipment according to claim 1, it is characterized in that: described negative pressure ventilation system adopts fuel gas supply pipeline (4) outer suit ventilation ducts (5), ventilation duct (5) is connected in series with liquid container bin (G1) and liquid-gas shift bin (G2), ventilation tubing one end is established the ventilation suction inlet, and the other end is arranged in parallel two axial-flow blowers (6).
4. the gaskraftstoffzufuhranlage of a kind of Ship Power Equipment according to claim 1, it is characterized in that: described ultralow temperature pipe penetration piece adopts manages suit vacuum insulation outer tube (10) outside (9) in vacuum insulation, vacuum insulation outer tube (10) is fixed on the bulkhead (12) by backing plate (11) or sleeve pipe.
5. the gaskraftstoffzufuhranlage of a kind of Ship Power Equipment according to claim 1, it is characterized in that: the heat exchange unit of described supercharging vaporizer (1c), gas heater (1d) and LNG vaporizer (1e) adopts one or more heat exchanging tube coiling coil pipes (13), layering is enumerated, and integral arrangement is in a urceolus.
6. the gaskraftstoffzufuhranlage of a kind of Ship Power Equipment according to claim 1, it is characterized in that: the internal unit of described liquid container bin (G1) and liquid-gas shift bin (G2) adopts and is bolted on the drip tray, one of screw is passed from tapping, and nut and drip tray weld together firmly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035213 CN203161377U (en) | 2013-01-23 | 2013-01-23 | Gas fuel supply system of marine power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320035213 CN203161377U (en) | 2013-01-23 | 2013-01-23 | Gas fuel supply system of marine power plant |
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| Publication Number | Publication Date |
|---|---|
| CN203161377U true CN203161377U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320035213 Expired - Lifetime CN203161377U (en) | 2013-01-23 | 2013-01-23 | Gas fuel supply system of marine power plant |
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| Country | Link |
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| CN (1) | CN203161377U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470887A (en) * | 2013-10-15 | 2013-12-25 | 惠生（南通）重工有限公司 | Leakage protection device for ultralow-temperature liquid at flange joint |
| CN103615659A (en) * | 2013-11-22 | 2014-03-05 | 江苏现代造船技术有限公司 | Gasification and self-supercharging device for LNG (Liquefied Natural Gas) |
| CN103696884A (en) * | 2013-11-21 | 2014-04-02 | 武汉三江航天远方科技有限公司 | Shared vaporizer type LNG (Liquefied Natural Gas) supply system |
| CN105416888A (en) * | 2015-11-23 | 2016-03-23 | 苏州梵荣特种集装箱有限公司 | Movable type gas station container |
| CN106640426A (en) * | 2016-12-15 | 2017-05-10 | 大连船舶重工集团有限公司 | Liquefied-natural-gas (LNG) fuel and solar combined type moving shore-base power supply container |
| CN106812599A (en) * | 2016-12-15 | 2017-06-09 | 大连船舶重工集团有限公司 | A kind of LNG fuel and solar united box-like mobile shore-based power supply system |
| CN107939554A (en) * | 2016-10-12 | 2018-04-20 | 恩凯 | The small-sized LNG fuel systems of ship |
| CN108194835A (en) * | 2018-02-08 | 2018-06-22 | 南通中集能源装备有限公司 | LNG fuel air supply system peculiar to vessel |
| CN108916648A (en) * | 2018-07-12 | 2018-11-30 | 南通诺德瑞海洋工程研究院有限公司 | A kind of LNG air supply system on deck carrier |
| CN110748439A (en) * | 2019-10-16 | 2020-02-04 | 大连船舶重工集团有限公司 | Low-pressure gas supply system capable of efficiently utilizing cold energy of LNG (liquefied natural gas) fuel |
| CN114440134A (en) * | 2022-01-24 | 2022-05-06 | 长江三星能源科技股份有限公司 | Integrated compact LNG gas supply system ethylene glycol water heat transfer sled dress equipment |
| CN115560248A (en) * | 2022-12-08 | 2023-01-03 | 招商局金陵船舶(威海)有限公司 | Marine liquefied natural gas filling channel connecting structure and connecting method |
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2013
- 2013-01-23 CN CN 201320035213 patent/CN203161377U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470887A (en) * | 2013-10-15 | 2013-12-25 | 惠生（南通）重工有限公司 | Leakage protection device for ultralow-temperature liquid at flange joint |
| CN103696884A (en) * | 2013-11-21 | 2014-04-02 | 武汉三江航天远方科技有限公司 | Shared vaporizer type LNG (Liquefied Natural Gas) supply system |
| CN103615659A (en) * | 2013-11-22 | 2014-03-05 | 江苏现代造船技术有限公司 | Gasification and self-supercharging device for LNG (Liquefied Natural Gas) |
| CN105416888A (en) * | 2015-11-23 | 2016-03-23 | 苏州梵荣特种集装箱有限公司 | Movable type gas station container |
| CN107939554A (en) * | 2016-10-12 | 2018-04-20 | 恩凯 | The small-sized LNG fuel systems of ship |
| CN106812599A (en) * | 2016-12-15 | 2017-06-09 | 大连船舶重工集团有限公司 | A kind of LNG fuel and solar united box-like mobile shore-based power supply system |
| CN106640426A (en) * | 2016-12-15 | 2017-05-10 | 大连船舶重工集团有限公司 | Liquefied-natural-gas (LNG) fuel and solar combined type moving shore-base power supply container |
| CN106640426B (en) * | 2016-12-15 | 2020-03-31 | 大连船舶重工集团有限公司 | LNG fuel and solar energy combined type mobile shore-based power supply container |
| CN108194835A (en) * | 2018-02-08 | 2018-06-22 | 南通中集能源装备有限公司 | LNG fuel air supply system peculiar to vessel |
| CN108194835B (en) * | 2018-02-08 | 2024-04-16 | 南通中集能源装备有限公司 | Marine LNG fuel gas supply system |
| CN108916648A (en) * | 2018-07-12 | 2018-11-30 | 南通诺德瑞海洋工程研究院有限公司 | A kind of LNG air supply system on deck carrier |
| CN108916648B (en) * | 2018-07-12 | 2023-11-21 | 南通诺德瑞海洋工程研究院有限公司 | LNG gas supply system on deck transport ship |
| CN110748439A (en) * | 2019-10-16 | 2020-02-04 | 大连船舶重工集团有限公司 | Low-pressure gas supply system capable of efficiently utilizing cold energy of LNG (liquefied natural gas) fuel |
| CN114440134A (en) * | 2022-01-24 | 2022-05-06 | 长江三星能源科技股份有限公司 | Integrated compact LNG gas supply system ethylene glycol water heat transfer sled dress equipment |
| CN115560248A (en) * | 2022-12-08 | 2023-01-03 | 招商局金陵船舶(威海)有限公司 | Marine liquefied natural gas filling channel connecting structure and connecting method |
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