System and method for evaporating gas processing on the ship

FIELD: transportation.

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

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises compressor, catalytic combustion chamber, turbine, regenerative heat exchanger, burner and valve. Compressor serves to compress working gas, said gas being of combustible component concentration smaller than that of its inflammability. Catalytic combustion chamber is designed to combust compressed air by catalytic reaction with the help of catalyst arranged therein to produce gaseous combustion products. Said products fed from catalytic combustion chamber drive the turbine. Regenerative heat exchanger serves to heat compressed air fed from compressor into said combustion chamber via used gas fed into turbine via used gas channel into regenerative heat exchanger. Burned serves to combust the gas forced from compressor along with fuel for forming the heating gas and feeding heating gas into used gas channel. Valve is designed to control the amount of gas to be fed to the burner.

EFFECT: ruled out loss of power output or discharge system pressure loss, compact design.

5 cl, 3 dwg

FIELD: power engineering.

SUBSTANCE: gas turbine plant for conversion of associated petroleum gas into power comprises an air compressor, a turbine, a combustion chamber, a power generator and a device o air heating downstream the compressor, comprising a heat exchange regenerator device arranged in an exhaust pipe. The combustion chamber with the exhaust pipe are arranged in the form of a surface flare for burning of associated petroleum gas. The compressor is equipped with an electric drive. The turbine at the outlet side is communicated with environment with the help of an autonomous pipe. The surface flare at the side of associated petroleum gas supply is made with a device of atmospheric air intake.

EFFECT: expanded area of gas turbine plant application, increased efficiency of carbon fuel usage and improved environmental capability of environment.

2 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: gas turbine system fed by depleted fuel comprises compressor, first catalytic chamber, turbine, recuperator, channel burner and extra device to feed auxiliary fuel arranged on compressor side to increase fuel concentration in the mix by adding extra auxiliary fuel in the mix. Compressor compresses aforesaid air-fuel mix with concentration equal to or lower than ultimate inflammability to obtain compressed gas. First catalytic combustion chamber allows combusting compressed gas by catalytic oxidation. Turbine may be driven by gas fed from first catalytic combustion chamber. Recuperator heats compressed gas by turbine exhaust gas while compressed gas is forced from compressor into said chamber. Channel burner is arranged between turbine and recuperator to combust exhaust gas with the help of auxiliary fuel in plasma burning.

EFFECT: higher efficiency, simplified design, ruled out fuel gas loss.

7 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: proposed system comprises air compressor, steel work gas compressor, combustion chamber, turbine, transmission for coupling drive shaft with steel work gas compressor. Turbine is driven by combustion chamber waste gas to transmit mechanical power to air compressor and using equipment, in particular, to AC generator and drive shaft. Compressed air and steel work compressed gas and/or natural gas are fed into combustion chamber. Transmission comprises means of coupling/uncoupling steel work gas compressor with/from drive shaft during rotation of the latter.

EFFECT: increased electric power output, decreased idle time, higher efficiency at restart of turbine and AC generator.

9 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: peak hydrogen steam turbine plant includes steam turbine and compressor, hydrogen and oxygen storage tanks and combustion chamber, which are installed on one shaft. Steam turbine and compressor are connected by means of system of steam pipelines so that closed steam circuit is formed. Combustion chamber is located before steam turbine and connected by means of pipelines to receivers. Regenerative heat exchanger and cooler are included in closed steam circuit. Condensing turbine with condenser is connected to steam pipeline connecting the steam turbine to compressor. Electrolysis unit is connected to condenser via pipeline on which there mounted is water pump, and interconnected with hydrogen and oxygen storage tanks via pipelines on which gas compressors are installed. Plant capacity is controlled by changing the hydrogen and oxygen supply to combustion chamber and steam discharge from closed circuit to condensing turbine.

EFFECT: increasing the plant efficiency and decreasing thermal stresses in turbomachines at variable loads due to almost unchangeable temperature in closed steam circuit.

1 dwg

FIELD: power industry.

SUBSTANCE: burner (4) for gas burner includes: swirler (21), plate (58), the first channel (18) via which fuel gas with low calorific value is supplied, and second channel (17) via which combustion air is supplied. The first and the second channels (17, 18) are located concentrically relative to longitudinal axis (2). Output of the first channel (18) is formed with convergent nozzle (50). Swirler (21) is installed at the outlet of the second channel (17). Plate (58) is tightly installed in the first channel (18) upstream nozzle (50) and has many holes (56) with calibrated section of the passage. Holes (56) are inclined in tangential direction relative to longitudinal axis (2) at the specified angle. For fuel gases having flame propagation speed of less than 300 mm/s, plate (58) has 36 to 38 holes (56) the diameter of which is 11.5 to 12.0 mm, and inclination angle of holes (56) is approximately 22. For fuel gases having flame propagation speed of 300 mm/s to 400 mm/s, plate (58) has 80 holes (56) the diameter of which is 8.5 mm to 9.0 mm, and inclination angle of holes (56) is 17 to 22. If calorific value of gas with low calorific value from the first channel (18) is less than 4.0 MJ/kg, then natural gas consumption is assumed from pilot line (46). Burner (5) is used only when gases with low calorific value are not available.

EFFECT: high burner flexibility; operation is possible at the gas used with low calorific value and of any type within the whole working range of gas turbine.

12 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed gas turbine comprises compressor linked up with the drive. In its turn, compressor drive comprises 1st and 2nd stages, inner and outer shafts with blower fitted on inner shaft and compressor fitted on outer shaft. It includes also HP and LP turbines with cooling system, primary combustion chamber arranged between compressor and HP turbine. Gas turbine comprises also outer combustion chamber and heat exchanger-heater arranged behind HP turbine and communicated, via heat carrier circulation lines, with heat exchanger arranged behind outer combustion chamber.

EFFECT: higher efficiency and reliability.

3 cl, 4 dwg

Power supply system // 2307946

FIELD: power engineering.

SUBSTANCE: proposed power supply system generating electric power using self-forming gas contains gas motor, gas turbine, gas collector for self-forming gas, device to separate gas and device to control calorific value for selective mixing of gases differing in content of fuel component. Gas separating device continuously separates gas delivering from gas collector whose fuel component content changes in time according to content of fuel component of gas. Calorific value control device for selective mixing of gases differing in content of fuel component which are separated by gas separating device, controls content of fuel component of gas which is to be supplied to gas motor and gas turbine. System control device is provided to control operation of gas motor, gas turbine and calorific value control device.

EFFECT: provision of power supply system maintaining stable generation of power, irrespective of changes of amount of self-forming gas and its calorific value.

13 cl, 8 dwg

The invention relates to a method and evaporator deeply refrigerated liquid working medium

FIELD: transport.

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

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

FIELD: transport.

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

The invention relates to shipbuilding, in particular to the fuel systems of submarines

The invention relates to shipboard systems submarine, in particular to the fuel system

The invention relates to shipbuilding and can be used to create the cooling systems of power plants vessels operating in conditions of high contamination of seawater various inclusions, for example, debris, algae, silt, and ships sailing in ice conditions in the presence of a large number of ice chips, such as nuclear or diesel-electric icebreakers

The invention relates to shipbuilding, in particular, to systems of two seals installed concentric to each other coaxially with the propeller shaft

The invention relates to shipbuilding, in particular to the structures of the fuel systems marine steam boilers

FIELD: machine building.

SUBSTANCE: design (21) of flanged part of the tank dome includes: flanged part projecting outside from the external surface of side wall of the tank dome ensured at section of the main tank body, made with possibility to store LT liquefied gas; tank casing (6) with possibility to cover section of the main tank body with space (5) between them; and compensation rubber section (11) ensured between the flanged part (22) and casing (6) of the tank, and made with possibility to tight the space (5), at that section of the heat transfer suppressing material, i.e. fibre reinforced plastic, is ensured on at least specified section of the flanged part (22), at that specified section is located between the side wall (3a) of the tank dome (3) and compensation rubber section (11).

EFFECT: temperature decreasing of LT liquefied gas stored in the tank upon ambient temperature rise due to the heat-insulating materials.

9 cl, 19 dwg

FIELD: transport.

SUBSTANCE: heat-insulating sealed wall of reservoir for compressed natural gas consists of blocks fixed on vessel hull using mechanical fixture which blocks include primary and secondary heat-insulating panels, primary sealing layer fixed on the blocks and secondary sealing layer located between them. The blocks are interconnected using bands of sealing layers, as well as heat-insulating materials placed in gaps between blocks. Wall blocks have forming coverage from all sides made of polymeric composite materials creating enclosed volume simultaneously surrounding primary and secondary heat-insulating panels. The blocks include primary sealing layer which is made of flexible material and attached directly to panels by means of sticking primary heat-insulating panel on the outside of forming coverage with partial transition to secondary heat-insulating panel forming coverage. In this structure, gaps between block panels are closed by bands of corresponding sealing layer which bands are attached to panels by sticking on portions of primary sealing layer at panel edges.

EFFECT: lowering labour consumption during manufacturing and assembling reservoir in vessel hull, lowering reservoir mass while increasing design reliability and its heat-insulating properties.

7 cl, 4 dwg

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