CN208605295U - A kind of energy-saving and high-pressure gas fuel feed system - Google Patents
A kind of energy-saving and high-pressure gas fuel feed system Download PDFInfo
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- CN208605295U CN208605295U CN201821059238.1U CN201821059238U CN208605295U CN 208605295 U CN208605295 U CN 208605295U CN 201821059238 U CN201821059238 U CN 201821059238U CN 208605295 U CN208605295 U CN 208605295U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a kind of energy-saving and high-pressure gas fuel feed systems, including the use of the waste-heat organic working medium of engine smoke discharging, jacket water, the organic working medium turbine unit for making organic working medium gasification driving turbine rotation, is converted into the reduction gearing and crank box of the reciprocating motion of high pressure reciprocating pump group after the rotary motion of organic working medium turbine unit is slowed down；High pressure reciprocating pump group receives liquefied natural gas and gaseous natural gas, and compresses it to engine operation pressure limit from LNG storage energy storage tank, BOG storage energy storage tank；Heater is used to heat the compressed liquified natural gas of high pressure reciprocating pump group, becomes the gaseous natural gas of the operating temperature used suitable for engine, burns and use for high-pressure engine.The utility model drive energy mostlys come from the waste heat of engine smoke discharging on ship, jacket water, and only a small amount of ancillary equipment uses electric power, to save a large amount of power consumption than other gas fuel feed systems.
Description
Technical field
The present invention relates to high-pressure natural gas engines, more specifically to a kind of high-pressure natural gas fuel feed system.
Background technique
ORC is the Rankine cycle using low-boiling-point organic compound as working medium, mainly by heat exchanger, turbine, condenser and working medium pump
Four big portion's set compositions.Organic working medium absorbs heat in heat exchanger from residual heat stream, generates the steam of tool certain pressure and temperature,
Steam enters turbomachinery expansion work, to drive generator or the other dynamic power machines of dragging.The steam being discharged from turbine exists
To cooling water heat release in condenser, liquid is condensed into, finally comes back to heat exchanger by working medium pump, under so constantly recycling
It goes.
Since the Daily boil-off-rate of the LNG in refrigerated storage tank is about 0.3%, this part boil-off gas abbreviation BOG.In LNG tank
Some mechanical can be converted into thermal energy when submerged pump is run, this can all make LNG gasification in tank generate flashed vapour, these flashed vapours are exactly
BOG gas.
Liquefied natural gas has begun one of the fuel used as ship, is used for high-pressure natural gas engine fuel supply
The working principle of system be also it is varied, the energy consumption of feed system is also different.Main high-pressure natural gas hair
Motivation fuel supply mode includes high pressure compressor supply mode, high pressure reciprocating pump group supply mode, these equipment are all motors
Driving, they will consume Ship Power Station sending electric power, that is to say, that during supply gas will using electric power as
Main energy sources, this adds increased the consumption of electric power, increase the consumption of marine fuel, so needing one kind can be with shipping transport
High-pressure natural gas fuel feed system of the waste heat of middle generation as main energy sources.
Summary of the invention
The present invention is intended to provide a kind of energy-saving and high-pressure gas fuel feed system, can utilize cylinder sleeve of engine water and master
Machine smoke discharging residual heat drives high pressure reciprocating pump group, and then realizes liquified natural gas and gaseous state natural gas compressing to engine operation
Pressure limit.
In order to achieve the above object, the present invention provides a kind of energy-saving and high-pressure gas fuel feed system, including bottom is set
There is LNG supply pump, top is equipped with the LNG holding bay of BOG export pipeline.
The export pipeline of the LNG supply pump is divided into multiple LNG branches, and each LNG branch is stored up with a LNG respectively
The import for depositing energy storage tank is connected；The outlet of each LNG storage energy storage tank is connected to high pressure reciprocating pump group by pipeline
Plunger pump LNG import on.
The BOG export pipeline is connected with the import of BOG compressor, the export pipeline of the BOG compressor be divided into
The BOG branch of the LNG branch same number, each BOG branch are connected with the import of BOG storage energy storage tank respectively；Often
The outlet of a BOG storage energy storage tank is connected to the BOG import of the plunger pump of the high pressure reciprocating pump group by pipeline
On.
Each outlet of plunger pump is converged to by pipeline leads to heater afterwards all the way；The outlet of the heater and hair
The valve terminal of motivation is connected.
Each plunger pump is provided with connecting rod, and each connecting rod is connected to the correspondence that crankshaft inside crank box is arranged in
On crank throw, the crankshaft is connected by reduction gearing with the power output end of the turbine of organic working medium turbine unit.
The organic working medium turbine unit includes evaporator, and the outlet of the evaporator passes through pipeline and the turbine
Working medium import is connected, and the sender property outlet of the turbine is connected in the inlet ductwork of condenser；The condensator outlet pipeline
It is connected with the import of working medium pump, the outlet of the working medium pump is connected with the import of the evaporator.
A kind of above-mentioned energy-saving and high-pressure gas fuel feed system, under preferred embodiment, the inside of the heater is added
Ethylene glycol heat medium.
Above-mentioned a kind of energy-saving and high-pressure gas fuel feed system, under preferred embodiment, in the organic working medium turbine unit
Portion adds organic working medium R134a.
Under preferred embodiment, three crank throws are arranged in a kind of above-mentioned energy-saving and high-pressure gas fuel feed system on the crankshaft,
And the average arrangement in 120 ° of interval.
High-pressure natural gas fuel feed system of the present invention, drive energy mostly come from engine smoke discharging on ship, jacket water
Waste heat, only a small amount of ancillary equipment such as working medium circulating pump, pipe-line control valve etc. use electric power, thus than other gas fuels
The consumption that feed system saves a large amount of power consumption, gas fuel is greatly decreased.
Detailed description of the invention
Fig. 1 is energy-saving and high-pressure gas fuel feed system schematic illustration.
In figure, 1, organic working medium turbine unit, 2, evaporator, 3, turbine, 4, condenser, 5, working medium pump, 6, crank box,
7, high pressure reciprocating pump group, 8, LNG storage energy storage tank, 9, BOG storage energy storage tank, 10 heaters, 11, screw down nonreturn valve, 12, LNG
Holding bay, 13, LNG supply pump, 14, BOG compressor.
Specific embodiment
As shown in Figure 1, a kind of energy-saving and high-pressure gas fuel feed system of the present invention, including bottom are equipped with LNG supply pump
13, top is equipped with the LNG holding bay 12 of BOG export pipeline；The export pipeline of the LNG supply pump 13 is divided into multiple LNG branches,
Each LNG branch is connected with the import of a LNG storage energy storage tank 8 respectively；Each LNG storage energy storage tank 8 goes out
In the LNG import for the plunger pump that mouth is connected to high pressure reciprocating pump group 7 by pipeline；The BOG export pipeline and BOG compress
The import of machine is connected, and the export pipeline of the BOG compressor is divided into the BOG branch with the LNG branch same number, each
The BOG branch is connected with the import of BOG storage energy storage tank 9 respectively；The outlet of each BOG storage energy storage tank 9 passes through pipe
Road is connected in the BOG import of the plunger pump of the high pressure reciprocating pump group 7；Each outlet of plunger pump is converged by pipeline
Gather and leads to heater 10 afterwards all the way；Add ethylene glycol heat medium inside the heater 10, the outlet of heater 10 with
The valve terminal of engine is connected；Each plunger pump is additionally provided with connecting rod, and each connecting rod, which is connected to, to be arranged in crank throw
On the correspondence crank throw of 6 inside crankshaft of case, the crankshaft passes through the dynamic of the turbine 3 of reduction gearing and organic working medium turbine unit 1
Power output end is connected；The organic working medium turbine unit 1 includes evaporator 2, the outlet of the evaporator 2 by pipeline with it is described
The working medium import of turbine 3 is connected, and the sender property outlet of the turbine 3 is connected in the inlet ductwork of condenser 4；The condensation
4 export pipeline of device is connected with the import of working medium pump 5, and the outlet of the working medium pump 5 is connected with the import of the evaporator 2；It is organic
The inside of working medium turbine unit 1 installs organic working medium R134a additional.
In the embodiment shown in fig. 1, the high pressure reciprocating pump group 7 is used for liquified natural gas and gaseous state natural pressure
It is reduced to engine operation pressure model, the suction line of the high pressure reciprocating pump group 7 divides two-way to store going out for energy storage tank 8 with LNG respectively
The outlet connection of mouth and BOG storage energy storage tank 9；The LNG stores the import of energy storage tank 8 and is placed in 12 bottom of LNG holding bay simultaneously
The outlet for being immersed in the LNG supply pump 13 in liquid LNG is connected by pipeline；The import of the BOG storage energy storage tank 9 passes through pipe
Road is connected via BOG compressor and LNG storage cabin top；BOG is the boil-off gas that LNG holding bay 12 generates, and is by operating pressure
The BOG compressor of 10-20bar is delivered to BOG storage energy storage tank 9 by the road.
LNG storage energy storage tank 8 stores LNG, buffering feeding pipe pressure for receiving, in short-term；It is arranged in LNG holding bay 12
LNG is delivered to LNG storage energy storage tank 8 by LNG supply pump 13 that is interior and being immersed in LNG by the road.LNG stores energy storage tank 8, number
There are three amounts, and volume is each one cubic metre, is connected respectively with three plunger pumps of the high pressure reciprocating pump group 7 by pipeline；
It is respectively equipped with remote-controlled valve on the import and export pipeline of each LNG storage energy storage tank 8, and reciprocal close to high pressure on export pipeline
The position of pump group 7 is equipped with for the screw down nonreturn valve 11 being isolated between BOG storage energy storage tank 9 to be isolated with high pressure reciprocating pump group 7.?
LNG is stored on the export pipeline of energy storage tank 8, between screw down nonreturn valve 11 and remote-controlled valve, equipped with for ventilative automatic vent valve.
It is disposed on the pipeline that LNG supply pump 13 leads to LNG holding bay 12 by check-valves and automatic vent valve.
BOG storage energy storage tank 9 stores BOG, buffering feeding pipe pressure for receiving, in short-term；Wherein BOG is LNG storage
The boil-off gas that cabin 12 generates is delivered to BOG by the compressor that operating pressure is 10-20bar by the road and stores energy storage tank 9.BOG storage
Deposit 9 quantity of energy storage tank three, volume is each 0.3 cubic metre, by pipeline respectively with three columns of the high pressure reciprocating pump group 7
Plug pump is connected；It is respectively equipped with remote-controlled valve on the import and export pipeline of each BOG storage energy storage tank 9, and close on export pipeline
The position of high pressure reciprocating pump group 7 is equipped with stops for the cut-off being isolated between LNG storage energy storage tank 8 to be isolated with high pressure reciprocating pump group 7
Valve 11 is returned, on the export pipeline of each BOG storage energy storage tank 9, between screw down nonreturn valve 11 and remote-controlled valve, equipped with for breathing freely
Automatic vent valve.It is disposed on the pipeline that LNG supply pump 13 leads to LNG holding bay 12 by check-valves and automatically saturating
Air valve.
In the embodiment shown in fig. 1, high pressure reciprocating pump group 7 is set there are three plunger pump, each plunger pump and reducing gear
The crank throw power output end of wheel and crank box 6 is connected, and each plunger pump output terminal pipeline is designed with valve group, for being isolated between pumping.
High pressure reciprocating pump group 7 receives liquefied natural gas and gaseous natural gas from LNG storage energy storage tank 8, BOG storage energy storage tank 9, and will
Its engine operation pressure limit for being compressed to 250-600bar.The export pipeline of high pressure reciprocating pump group 7 and heater 10 into
Mouth is connected；The export pipeline of heater 10 leads to the valve terminal of engine；Heater 10 is for compressing high pressure reciprocating pump group 7
Liquified natural gas afterwards is heated to being suitable for the gaseous natural gas for the operating temperature that engine uses, and makes for high-pressure engine burning
With.The heat medium of heater 10 is ethylene glycol, operating pressure 300-350bar.
Organic wage turbine unit 1 includes the water that heats using cylinder sleeve of engine water and host smoke discharging residual heat by organic work
The outlet of the evaporator 2 of matter heating and gasifying, evaporator 2 is connected with turbine 3, and turbine 3 can utilize the evaporator 2 output
The organic working medium that gasifies pushes turbine rotation, generates mechanical energy；
The outlet connection of turbine 3 is used to for the organic working medium after acting being cooled to the condenser 4 of liquid, condenser 4
Working medium pump 5 of the outlet connection for recycling organic working medium in system, the outlet of the working medium pump 5 is connected to the evaporator
2 import.
The specific course of work of organic working medium turbine unit 1 are as follows: evaporator 2 utilizes more than cylinder sleeve of engine water and host smoke evacuation
The water of heat heating by organic working medium heating and gasifying, evaporator 2 its can be plate heat exchanger or shell and tube exchanger, hot water side
Access engine of boat and ship jacket water or the hot water through smoke evacuation heating；Organic working medium is flanked into working medium circulation pipeline；Organic working medium boiling
Point is low, generally uses R134a as organic working medium；Organic working medium enters the acting of turbine 3 after the gasification of evaporator 2 revolves turbine
Turn, turbine uses coaxial multistage turbine, and revolving speed is 1200-3600 revs/min, and organic working medium turbine unit 1 is equipped with output driving shaft；
Organic working medium enters condenser 4 after turbine 3, and condenser 4 can be plate heat exchanger or shell and tube exchanger, condensation
Device 4 is equipped with cold water side, and the organic working medium after acting is cooled to liquid by condenser 4；4 back of condenser is arranged in working medium pump 5
In liquid pipeline, after organic working medium is pressurizeed by working medium pump 5, recycled in organic working medium pipeline with operating pressure.
The inside of crank box 6 includes reduction gearing and crank throw, the mechanical energy that reduction gearing exports turbine rotate at high speed
The mechanical energy of low speed rotation output is converted to, multi-stage speed-reducing gear is equipped with, input speed is reduced to from 1200-3600 revs/min
120-360 revs/min, reduction gearing band dynamic crankshaft, is arranged in the crank throw on crankshaft and connecting rod cooperates, and low-speed rotation is converted
Set that there are three crank throws to move back and forth, on crankshaft as power output end, in 120 ° of average arrangements, it is therefore intended that reduce and back and forth transport
Air supply pressure fluctuation caused by dynamic, keeps supply gas pressure more stable.
A kind of energy-saving and high-pressure gas fuel feed system of the present invention, i.e., in the ship using high-pressure natural gas engine
In, using the waste heat of engine smoke discharging, jacket water on ship, heats organic working medium and drive organic working medium saturating by ORC endless form
Flat, the rotation of turbine is converted to reciprocating motion by the reduction gearing and crank box 6 being connected with organic working medium turbine, and then is driven high
Reciprocal pump group 7 is pressed, LNG is compressed to high-pressure natural gas engine operation pressure limit, is supplied to the engine, system is not with electricity
Power generates energy-saving effect as main energy sources.
A kind of energy-saving and high-pressure gas fuel feed system of the present invention, including organic working medium turbine unit 1, for that will start
Machine smoke evacuation, jacket water waste-heat organic working medium, organic working medium gasification driving turbine, turbine rotate output mechanical energy；Slow down
The rotary motion of organic working medium turbine unit 1 is converted into moving back and forth by gear and crank box 6 after deceleration；LNG stores accumulation of energy
Tank 8, for receiving LNG, buffering feeding pipe pressure；BOG stores energy storage tank 9, for receiving gaseous natural gas, buffering supply pipe
Road pressure；High pressure reciprocating pump group 7, for from the LNG storage energy storage tank 8, BOG storage energy storage tank 9 receive liquefied natural gas and
Gaseous natural gas, and compress it to the engine operation pressure limit of 250-600bar, under preferable case, it is compressed to 300-
350bar；Heater 10 is used for the compressed heated by natural gas of the high pressure reciprocating pump group 7 to the work for being suitable for engine and using
Make temperature；
Organic working medium turbine unit 1 includes: that evaporator 2 will using the water that cylinder sleeve of engine water and host smoke discharging residual heat heat
Organic working medium heating and gasifying；Turbine rotation is pushed after the gasification organic working medium input that turbine 3 exports the evaporator 2, is produced
Raw mechanical energy；Organic working medium after acting is cooled to liquid by the condenser 4；The working medium pump 5 for make organic working medium with
Operating pressure circulation.
The rotary motion of 1 output end of organic working medium turbine unit is converted into reciprocal by reduction gearing and crank box 6 after deceleration
Movement；Specifically, the mechanical energy that reduction gearing exports turbine rotate at high speed is converted to the mechanical energy of low speed rotation output；Again
By the cooperation of crank throw and connecting rod, the rotary motion of the low-speed gear is converted into the past of 7 internal piston of high pressure reciprocating pump group
Multiple movement.
The LNG storage energy storage tank 8 reduces feed system energy consumption for receiving LNG, buffering feeding pipe pressure.
It is arranged in LNG holding bay 12 and LNG is delivered to LNG by the LNG supply pump 13 being immersed in liquid LNG by the road
Store energy storage tank 8.
The BOG storage energy storage tank 9 reduces feed system energy for receiving gaseous natural gas, buffering feeding pipe pressure
Consumption.Wherein gaseous natural gas BOG is delivered to BOG storage energy storage tank 9 by BOG compressor by the road.
High pressure reciprocating pump group 7 be used for from the LNG storage energy storage tank 8, BOG storage energy storage tank 9 receive liquefied natural gas and
Gaseous natural gas, and compress it to engine operation pressure limit；The compressed natural gas of high pressure reciprocating pump group 7 is by heating
Device 10 is heated to being suitable for the operating temperature that engine uses；
Evaporator 2 utilizes cylinder sleeve of engine water and the water of host smoke discharging residual heat heating by organic working medium heating and gasifying；Turbine
Turbine rotation is pushed after the gasification organic working medium input that machine 3 exports the evaporator 2, generates mechanical energy；Condenser 4 will do work
Organic working medium afterwards is cooled to liquid；Working medium pump 5 is for recycling organic working medium with operating pressure.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of energy-saving and high-pressure gas fuel feed system, which is characterized in that be equipped with LNG supply pump (13) including bottom, top
Portion is equipped with the LNG holding bay (12) of BOG export pipeline；
The export pipeline of the LNG supply pump (13) is divided into multiple LNG branches, and each LNG branch is stored up with a LNG respectively
The import for depositing energy storage tank (8) is connected；It is past that the outlet of each LNG storage energy storage tank (8) by pipeline is connected to high pressure
In the LNG import of the plunger pump of multiple pump group (7)；
The BOG export pipeline is connected with the import of BOG compressor (14), the export pipeline point of the BOG compressor (14)
At the BOG branch with the LNG branch same number, the import with BOG storage energy storage tank (9) respectively of each BOG branch
It is connected；The outlet of each BOG storage energy storage tank (9) is connected to the column of the high pressure reciprocating pump group (7) by pipeline
In the BOG import for filling in pump；
Each outlet of plunger pump is converged to by pipeline leads to heater (10) afterwards all the way；The outlet of the heater (10)
It is connected with the valve terminal of engine；
Each plunger pump is provided with connecting rod, and each connecting rod is connected to setting in the correspondence of the internal crankshaft of crank box (6)
On crank throw, the crankshaft is connected by reduction gearing with the power output end of the turbine (3) of organic working medium turbine unit (1)；
The organic working medium turbine unit (1) includes evaporator (2), and the outlet of the evaporator (2) passes through pipeline and described
The working medium import of flat machine (3) is connected, and the sender property outlet of the turbine (3) is connected in the inlet ductwork of condenser (4)；It is described
Condenser (4) export pipeline is connected with the import of working medium pump (5), the outlet of the working medium pump (5) and the evaporator (2) into
Mouth is connected.
2. a kind of energy-saving and high-pressure gas fuel feed system according to claim 1, which is characterized in that the heater
(10) inside adds ethylene glycol heat medium.
3. a kind of energy-saving and high-pressure gas fuel feed system according to claim 1, which is characterized in that the organic working medium
Organic working medium R134a is added inside turbine unit (1).
4. a kind of energy-saving and high-pressure gas fuel feed system according to claim 1, which is characterized in that set on the crankshaft
Three crank throws are set, and are spaced 120 ° of average arrangements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821059238.1U CN208605295U (en) | 2018-07-05 | 2018-07-05 | A kind of energy-saving and high-pressure gas fuel feed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821059238.1U CN208605295U (en) | 2018-07-05 | 2018-07-05 | A kind of energy-saving and high-pressure gas fuel feed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208605295U true CN208605295U (en) | 2019-03-15 |
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ID=65667945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821059238.1U Active CN208605295U (en) | 2018-07-05 | 2018-07-05 | A kind of energy-saving and high-pressure gas fuel feed system |
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| Country | Link |
|---|---|
| CN (1) | CN208605295U (en) |
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2018
- 2018-07-05 CN CN201821059238.1U patent/CN208605295U/en active Active
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