System disposal of contaminated bilge water in a ship's steam boilers
(57) Abstract:Usage: shipbuilding. The inventive part of the disposal system introduces the ejector 5 with the annular nozzle connected to the fuel line and regulator combustion boiler, the outlet of the ejector 5 is connected to the pipe 8 fuel supply to the injectors, and the fuel line 6 on the nozzle of the ejector, fuel supply 8 to the nozzle of the boiler and the suction line of the ejector is equipped with a shut-off bodies 7, made in the form of non-return valves. 2 C.p. f-crystals, 1 Il. The invention relates to shipbuilding, in particular to the structures of the fuel systems marine steam boilers.A well-known system of disposal of contaminated bilge water in a ship's steam boilers containing fuel pump, inlet pipe which is communicated with the fuel tank, and the discharge nozzles of the boiler, and the ejector, a nozzle through which the pipe with a shut-off body is connected with the pressure pipe of the fuel pump and the suction inlet of the ejector through the suction pipe with a shut-off body is connected to the collection vessel contaminated oily water.This system is environmentally hazardous, the selected defects. In particular, time-limited work, which for marine steam boilers is 1-2 hours This is because the moisture content in the fuel going to the combustion, is constantly increasing due to a partial refund water fuel emulsion in the fuel system. This system provides for the collection and disposal of oil film from the surface of contaminated water resulting from spills and leaks of fuel and lubricants.The aim of the present invention is the maximum environmental safety and efficiency of ships with boiler-turbine power plants in the period of their exploitation - tion, as well as improving the environmental situation in their home base and increased vessel traffic.The technical result of the invention is achieved in that in the known system, the nozzle of the ejector is made circular, and the outlet of the ejector is connected to the fuel line to the injectors of the boiler. In addition, the locking bodies on the suction side of the ejector and the fuel line on an annular nozzle ejector made in the form of non-return valves. In addition, the fuel line to the injectors from the ejector sabellaria system, the overall look.System disposal of contaminated bilge water in a ship's steam boilers includes a fuel tank 1, the fuel pump 2, the capacity of 3 collect dirty water, burning regulator (remote control combustion) 4, the ejector 5 with a ring-shaped nozzle pipe 6 fuel supply to the nozzle of the ejector non-return valve 7, line 8 fuel (water fuel emulsion) on injector boiler non-return valve 7, the suction pipe 9 of the ejector non-return valve 7, a flexible hose 10 with the receiving filter 11, the device 12 to control the depth of immersion of the hose, pipeline 13-intake of polluted water from the tank 3 collect dirty water.The system works as follows.During operation of the fuel pump 2 and the fuel regulator combustion 4 ejector 5 creates negative pressure. Unheated contaminated with oil sea salt or fresh water through the suction filter 11 and through a flexible hose 10 is supplied into the working chamber of the ejector 5, where under pressure through an annular nozzle enters the oil. The fuel is mixed with water in the mixing chamber of the jet, forming a fuel fine emulsion, which is supplied to the pipelines is vodotoplivnoy emulsion is adjusted by increasing fuel pressure in the pipe 8 fuel supply to the injectors, when the fuel pressure in the pipe 6 fuel supply to the ejector continuously in all modes. With increasing fuel pressure in the pipe 8 when the operation of the boiler at high loads, the differential pressure of the ejector is reduced, reducing the amount of drawn water out of the hold. The maximum concentration of water 10% in water fuel emulsion can be achieved during the ship's boiler at low loads. In the steady state operation of the boiler fuel moisture content of the emulsion entering the combustion, constant. With the help of the device 12 regulation dive hose, the hose 10 is floating on the water surface and remove surface the most contaminated oil layer bilge water. If necessary, the system can be switched to suction from the tank 3 collect dirty water. 1. SYSTEM DISPOSAL of CONTAMINATED BILGE WATER IN a SHIP's STEAM BOILERS containing fuel pump, inlet pipe which is communicated with the fuel tank, and the discharge nozzles of the boiler, and the ejector, a nozzle through which the pipe with a shut-off body is connected with the pressure pipe of the fuel pump and the suction inlet of the ejector through the suction pipe with shut-off body is on the ring, and the outlet of the ejector is connected to the fuel line to the injectors of the boiler.2. The system under item 1, characterized in that the shut-off bodies on the suction side of the ejector and the fuel line on an annular nozzle ejector made in the form of non-return valves.3. The system under item 1, characterized in that the fuel line to the injectors from the ejector is equipped with a shut-off body, made in the form of non-return valve.
SUBSTANCE: invention relates to device for feeding fuel in power plant of a ship carrying liquefied gas from ship liquefied gas tank. Ship comprises at least one liquefied gas tank 2 and onboard power plant, and device to feed fuel into said power plant. Proposed device comprises pump 20, vessel 23, injector 12 and fluid line. Said pump is mounted on vessel bottom. Container is arranged in vessel around the pump to support immersed pump. Aforesaid fluid ejector is arranged inside said vessel to suck off liquefied gas from its bottom. Fluid line (21, 22, 24, 250) communicates pump outlet with injector inlet on one side and, on the other side, it communicates injector outlet with vessel.
EFFECT: reduced risks of pump outage or damage.
10 cl, 3 dwg
FIELD: power engineering.
SUBSTANCE: heat exchange complex of a steam turbine plant comprises a system of main condenser cooling, which comprises the following components serially connected with a cooling pipeline: an ice box, a circulating pump, the main condenser and a drain box, and also a condensate system comprising the main condenser, a condensate pump, a low-pressure feedwater heater and a deaerator, serially connected with a condensate pipeline, besides, the main condenser cooling system is arranged as closed and is equipped with an off-board heat exchanger installed in the ice box. Also the main condenser cooling system comprises a closed circuit of secondary coolant, which is equipped with a low-pressure feedwater heater of the condensate system.
EFFECT: invention makes it possible to increase energy efficiency of a vessel.
4 cl, 1 dwg
SUBSTANCE: invention relates to feed of fuel gas to power plants of tankers that carry compressed natural gas and use it as the main power carrier. This process consists in continuous use of, first of all, gas generated in cargo gas tanks as the main power carrier for tanker engines. Excess gas is compressed by compressor at low motion speeds and at stops. Said compressed gas is accumulated in high-pressure vessels (200 bar and higher) and its application when gas consumption exceeds its generation in cargo tanks.
EFFECT: higher efficiency of operation of said tankers.
7 cl, 1 dwg
SUBSTANCE: invention relates to submarines and concerns a submarine fuel system. Disclosed is a fuel system of a submarine including external fuel tanks, which are made in form of, for example, solids of revolution and are equipped with pipelines with displacement valves, wherein external tanks are arranged outside hull of submarine and are interconnected by wing-like cowling consisting of two side sections, wherein cowling in middle part is shaped out of submarine and pipelines of external tanks are arranged inside wing-like cowling, wherein on-board sections of cowling are interconnected and connected to housing of submarine by quick-release connections.
EFFECT: invention ensures reduction of volume of system when arrangement on submarine.
1 cl, 1 dwg
FIELD: gas industry.
SUBSTANCE: invention relates to systems for liquefied gas processing and can be used on ships. Liquefied gas processing system for ship includes the main supply line of the boil-off gas (BOG) configured to be able to compress the BOG created in the cargo tank by the compressor and to feed it into the main engine as fuel. Auxiliary BOG supply line can compress the BOG created in the cargo tank by the compressor and feed the compressed BOG to the auxiliary engine as fuel. Main LNG supply line is configured to compress the LNG stored in the cargo tank by the pump and to supply the compressed LNG to the main engine as fuel. Auxiliary LNG supply line is configured to compress the LNG stored in the cargo tank by the pump and to supply the compressed LNG to the auxiliary engine as fuel.
EFFECT: possibility of efficient use of liquefied gas is achieved.
13 cl, 13 dwg
SUBSTANCE: invention relates to ship power plants and can be used for supply of fuel gas. Ship fuel gas supply system comprises engine, creating propulsion force, using fuel gas. Fuel gas, intended for supply into engine, is stored in fuel gas reservoir. Engine is installed in engine room, located at ship’s aft. Fuel gas reservoir is arranged in ship longitudinal direction.
EFFECT: enabling possibility of ship space efficient use with minimum length of fuel gas supply line.
30 cl, 5 dwg
SUBSTANCE: ship includes the liquefied gas storage tank and the medium pressure gas engine, that uses the liquefied gas stored in the storage tank as the fuel. In addition, the ship also includes a system and method for processing the evaporating gas (BOG), in which the BOG leaves the storage tank and it is compressed. Most part of the BOG is used as the fuel for the ship engines, and the part of the other BOG is liquefied by the BOG cold energy, that has just left the storage tank and returns to the storage tank.
EFFECT: effective use of the evaporating gas on the ship.
20 cl, 6 dwg
FIELD: engine devices and pumps.
SUBSTANCE: device for feeding fuel to a ship engine comprises a high-pressure pump generating higher pressure of liquefied natural gas (LNG) and feeding the LNG under pressure to the engine; a hydraulic motor driving the high-pressure pump; and a lubricating pump supplying lubricating oil to the high-pressure pump.
EFFECT: simplification of fuel feed device in ship engine and possibility of fuel feed device installation next to the engine without applying the partition walls.
17 cl, 10 dwg
FIELD: machine engineering.
SUBSTANCE: stripping gas processing system includes a compressor 100 compressing the stripping gas which is generated in tank T for storing liquefied natural gas of a ship or floating structure, a heat exchanger 200 that cools the stripping gas compressed by the compressor 100 by means of heat exchange with stripping gas supplied to the compressor 100, an expansion device 300 which performs adiabatic expansion of the stripping gas, a gas-liquid separator 400 which performs gas/liquid separation of the stripping gas and supplying liquefied natural gas to the tank T. The system also includes a bypass line, through which stripping gas subjected to adiabatic expansion is fed from downstream position from the device 300 to downstream position from the separator 400.
EFFECT: providing efficient processing of the stripping gas.
9 cl, 7 dwg