CN103511127B - Engine of boat and ship Liquefied Natural Gas fuel supply system - Google Patents
Engine of boat and ship Liquefied Natural Gas fuel supply system Download PDFInfo
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- CN103511127B CN103511127B CN201210214274.1A CN201210214274A CN103511127B CN 103511127 B CN103511127 B CN 103511127B CN 201210214274 A CN201210214274 A CN 201210214274A CN 103511127 B CN103511127 B CN 103511127B
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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 present invention relates to engine of boat and ship Liquefied Natural Gas fuel supply system, comprising: Liquefied Natural Gas fuel tank; Working fluid storage tank; Fuel supply lines; Cooling water circulation circuit; Working fluid cycles circuit; Heat exchanger, working fluid bin comprises: sleeve pipe, by base plate and top plate seal, forms working fluid inflow entrance and working fluid exhaust port; Inlet side tube sheet, is combined with top board, forms multiple attachment hole, is connected to the first supply lines; Outlet side tube sheet, is incorporated into top board isolator with inlet side tube sheet, forms multiple attachment hole, is connected to fuel supply lines; Supervisor, is connected with the attachment hole of inlet side tube sheet with upper one end, mode that the top the other end is connected with the attachment hole of outlet side tube sheet is arranged at inside pipe casing, LNG Liquefied natural gas is gasified; Auxiliary pipe, after being vaporized, is supplied to the inner space of Liquefied Natural Gas fuel tank by the LNG Liquefied natural gas flowed into tank connected second supply lines of Liquefied Natural Gas fuel.
Description
Technical field
The present invention relates to a kind of fuel supply system of engine of boat and ship, the technology that liquefied natural gas gasifying can be made to be used as fuel carry out providing is be provided.
Background technique
LNG Liquefied natural gas (LNG, Liquifiednaturalgas) refers to the material liquefied to the rock gas in gas-field exploitation, is that its main component is methane with the difference of liquefied petroleum gas (LPG) (LPG).When liquefying to LNG Liquefied natural gas applying pressure, its volume-diminished to 1/600, the boiling point of methane is-162 DEG C, very low, liquefies, use specially-made heat insulation jar special that LNG Liquefied natural gas is taken out of area, oil field through cooling or compression.
In the international transport of LNG Liquefied natural gas, use LNG Liquefied natural gas special purpose ship, because the boiling point of LNG Liquefied natural gas is extremely low, is stored at the liquefied natural gas gasifying in LNG Liquefied natural gas storage tank, and makes the internal pressure of LNG Liquefied natural gas storage tank increase.
Although carried out special facture to LNG Liquefied natural gas storage tank, the excessive lifting of internal pressure, will become factor safety of ship being caused to serious threat.Therefore, the rock gas that the inside of liquefying natural gas reservoir tank by discharge generates is used as motor fuel or is delivered to other firing units and burns.
As the prior art that the present invention is correlated with, in No. 10-0835090th, Ebrean Registered Patent numbering (2008.05.28 registration), propose the technology relevant to " the fuel gas supply system and method for liquified natural gas carrier (LNGC) ".
In above-mentioned prior art, be provided with fuel gas supply circuit, this fuel gas supply circuit extracts LNG Liquefied natural gas from the LNG Liquefied natural gas storage tank of liquified natural gas carrier (LNGC), and be supplied to spraying high-pressure gas motor, in the way of above-mentioned fuel gas supply circuit, place is provided with heat exchanger in addition, and this heat exchanger carries out heat exchange with the boil-off gas extracting LNG Liquefied natural gas from LNG Liquefied natural gas storage tank.
Further, in the way of fuel gas supply circuit, place is provided with the compression unit for compressing and liquefying rock gas, is provided with the gasification unit of the liquefied natural gas gasifying after making compression at the dirty place of compression unit.
The feature of prior art is, is vaporized after compressing and liquefying rock gas, and the boil-off gas of LNG Liquefied natural gas storage tank is used as thermal source by heat exchanger.
But because needs arrange compressor, there is the problem that device is complicated, in addition, owing to utilizing the boil-off gas generated in LNG Liquefied natural gas reservoir interior to carry out working heat switchboard, so there is the problem that suitably cannot control LNG temperature according to concrete situation.That is, when needs are increased sharply engine output, need the gasification rate accelerating LNG Liquefied natural gas, but according to prior art, realize above-mentioned purpose and have some limitations.
Further, according to prior art, owing to being consumed gradually along with the LNG Liquefied natural gas of LNG Liquefied natural gas storage tank, the internal pressure of LNG Liquefied natural gas storage tank changes, and there is the problem cannot carrying out effective stress management.
When the internal pressure of LNG Liquefied natural gas storage tank occurs sharply to change repeatedly, harmful effect can be produced, so be necessary the internal pressure making LNG Liquefied natural gas storage tank keep certain to LNG Liquefied natural gas storage tank.
No. 10-0835090th, Ebrean Registered Patent numbering (2008.05.28 registration)
Summary of the invention
Therefore, according to engine of boat and ship Liquefied Natural Gas fuel supply system of the present invention, object is to provide following technology, utilize the used heat of engine of boat and ship, in heat exchanger, the working fluid of working fluid bin is heated, by the flow control of working fluid, the amount of vaporization of the LNG Liquefied natural gas of carrying out in working fluid bin is controlled, thus tackle the output power demand of engine of boat and ship rapidly.
And, the object of the present invention is to provide following a kind of technology, by making to utilize working fluid bin, vaporized partial liquefaction rock gas is supplied to Liquefied Natural Gas fuel tank again, thus can manage the internal pressure of Liquefied Natural Gas fuel tank within the specific limits, and then improve stability.
And, the object of the present invention is to provide following a kind of technology, the position that the position flowing into working fluid bin by the LNG Liquefied natural gas forming ultralow temperature independently of each other and the normal-temperature natural-gas gasified are discharged from working fluid bin, thus guarantee safety under the thermal shock that can cause in higher temperature difference.
Further, the object of the present invention is to provide following a kind of technology, in order to improve the efficiency of working fluid, multiple baffle plate being set at inside pipe casing, being separated internal casing space with sealing plate, avoid working fluid to flow into idle space, and then efficiency is maximized.
In order to realize aforementioned object, according to engine of boat and ship Liquefied Natural Gas fuel supply system of the present invention, comprising: Liquefied Natural Gas fuel tank, it stores LNG Liquefied natural gas; Working fluid storage tank, it is connected with above-mentioned Liquefied Natural Gas fuel tank, utilizes the working fluid capable of circulation stored, gasifies to LNG Liquefied natural gas, its part supplied as motor fuel, its another part resupplies to above-mentioned Liquefied Natural Gas fuel tank; Engine of boat and ship, the rock gas (NG) gasified by above-mentioned working fluid bin is used as fuel by it; Fuel supply lines, it connects above-mentioned working fluid bin and engine of boat and ship, and the rock gas gasified is supplied to engine of boat and ship; Cooling water circulation circuit, it is connected with above-mentioned engine of boat and ship, and Cooling Water circulates; Working fluid cycles circuit, it is connected with above-mentioned working fluid bin, for above-mentioned working fluid cycles; And heat exchanger, itself and above-mentioned cooling water circulation circuit and above-mentioned working fluid cycles connection, cooling water and working fluid is made to carry out heat exchange, it is characterized in that, above-mentioned working fluid bin, comprise: sleeve pipe, it realizes sealing by base plate and top board, and forms working fluid inflow entrance and working fluid exhaust port; Inlet side tube sheet, it is incorporated into above-mentioned top board, forms multiple attachment hole, is connected to the first supply lines be connected with above-mentioned Liquefied Natural Gas fuel tank; Outlet side tube sheet, itself and above-mentioned inlet side tube sheet are incorporated into above-mentioned top board isolator, form multiple attachment hole, are connected to above-mentioned fuel supply lines; Supervisor, the mode that it is connected with the above-mentioned attachment hole of above-mentioned inlet side tube sheet with upper one end, the top the other end is connected with the above-mentioned attachment hole of above-mentioned outlet side tube sheet is arranged at above-mentioned inside pipe casing, and LNG Liquefied natural gas is gasified; And auxiliary pipe, it is arranged near the interior lower end of above-mentioned sleeve pipe, after being vaporized by the LNG Liquefied natural gas flowed into tank connected second supply lines of above-mentioned Liquefied Natural Gas fuel, be supplied to the inner space of above-mentioned Liquefied Natural Gas fuel tank along recirculation circuit.
Further, in the present invention, above-mentioned inlet side tube sheet comprises: be communicated with above-mentioned first supply lines and carry out coated inlet side lid to the upper end portion of the above-mentioned supervisor being inserted in above-mentioned attachment hole; Be arranged at the impingement plate of above-mentioned inlet side cover inside, above-mentioned outlet side tube sheet comprises: be communicated with above-mentioned fuel supply lines and carry out coated outlet side lid to the upper end portion of the above-mentioned supervisor being inserted in above-mentioned attachment hole; Be arranged at the impingement plate of above-mentioned outlet side cover inside.
Further, in the present invention, at above-mentioned sleeve pipe, be provided with the first sealing plate, it is formed at the idle space of above-mentioned auxiliary pipe bottom for reducing; Also be provided with the second sealing plate, it seals in the left and right sides of position to above-mentioned inside pipe casing than the above-mentioned more top side of auxiliary pipe, prevents working fluid from flowing into wherein.
Further, in the present invention, in the inside of above-mentioned sleeve pipe, be provided with multiple baffle plate, these baffle plates above-mentioned multiple supervisor of supporting also with zigzag arrangement, makes the flowing indention of working fluid.
Further, in the present invention, above-mentioned baffle plate is connected by multiple pull bar, and by being inserted in the maintenance spacer element of pull bar, makes to keep a determining deviation between above-mentioned baffle plate.
Engine of boat and ship Liquefied Natural Gas fuel supply system according to the present invention has following effect.
Make use of the used heat of engine of boat and ship.By carrying out flow control to the working fluid of the working fluid bin heated by heat exchanger, realizing the control of liquefied natural gas gasifying amount, tackling rapidly the demanded power output of engine of boat and ship and supplying fuel.
Further, the partial liquefaction rock gas gasified is supplied to Liquefied Natural Gas fuel tank, thus can manages the internal pressure of Liquefied Natural Gas fuel tank within the specific limits, improve Security.
Further, form inlet side tube sheet and outlet side tube sheet independently on the top of working fluid, prevent the tube sheet caused by temperature difference sharply from damaging.
Further, multiple baffle plate is set at inside pipe casing, sealing plate is set, make to give full play to heat exchange efficiency.
Accompanying drawing explanation
Fig. 1 is the concept map of engine of boat and ship Liquefied Natural Gas fuel supply system according to an embodiment of the invention.
Fig. 2 is the plan view of working fluid bin.
Fig. 3 is the horizontal axis sectional view of Fig. 2.
Fig. 4 is the vertical shaft sectional view of Fig. 2.
Fig. 5 is that sleeve pipe is correlated with plan view.
Fig. 6 is the substantially horizontal sectional view of Fig. 5.
Fig. 7 is the Vertical direction sectional view of Fig. 5.
Fig. 8 is the plan view of baffle plate.
Fig. 9 is incorporated into the inlet side tube sheet of top board and the plan view of outlet side tube sheet.
Figure 10 is pull bar and the exemplary plot keeping spacer element.
Reference character:
100: Liquefied Natural Gas fuel tank 200: working fluid bin
210: sleeve pipe 211: base plate
212: top board 213: working fluid inflow entrance
214: working fluid exhaust port 220: inlet side tube sheet
221: attachment hole 220a: inlet side lid
220b: impingement plate 230: outlet side tube sheet
231: attachment hole 230a: outlet side lid
230b: impingement plate 240: supervisor
250: auxiliary pipe P1: the first sealing plate
P2: the second sealing plate B: baffle plate
T: pull bar S: keep spacer element
300: engine of boat and ship 400: heat exchanger
500: control device L1: the first supply lines
L2: the second supply lines L3: recirculation circuit
L4: fuel supply lines L5: cooling water circulation circuit
L6: working fluid cycles circuit V: control valve
Embodiment
Below, the present invention is described in detail with reference to the accompanying drawings, and those skilled in the art can easily be implemented.But the present invention can realize with various different shape, is not limited to following embodiment.Further, in order to definitely the present invention is described, eliminate in the accompanying drawings and irrelevant part is described, for part similar in whole specification, have employed similar reference character.
In whole specification, when being stated as certain part and " comprising " a certain structural element, if no special instructions, then represent and can also comprise other structural elements, instead of get rid of other structural elements.
Fig. 1 is the concept map of engine of boat and ship Liquefied Natural Gas fuel supply system according to an embodiment of the invention, and Fig. 2 is the plan view of working fluid bin, and Fig. 3 is the horizontal axis sectional view of Fig. 2, and Fig. 4 is the vertical shaft sectional view of Fig. 2.
As shown in the figure, engine of boat and ship Liquefied Natural Gas fuel system according to the present invention comprises Liquefied Natural Gas fuel tank 100, working fluid bin 200, engine of boat and ship 300 and heat exchanger 400.
Certainly, also be provided with the control device 500 for controlling this engine of boat and ship Liquefied Natural Gas fuel supply system, by control device 500, to the discharge of the work of working fluid bin 200, template heat exchanger 400, the LNG Liquefied natural gas of Liquefied Natural Gas fuel tank 100, automatically control to the supply etc. of the LNG Liquefied natural gas gasified of engine of boat and ship 300.
Liquefied Natural Gas fuel tank 100 forms through special facture, substantially can store LNG Liquefied natural gas and as engine of boat and ship 300 fuel and discharge.Preferably in conjunction with fuel storage system, LNG Liquefied natural gas can be injected for Liquefied Natural Gas fuel tank 100.
Working fluid bin 200 is connected with Liquefied Natural Gas fuel tank 100, and the LNG Liquefied natural gas being stored in Liquefied Natural Gas fuel tank 100 flows into working fluid bin 200, becomes the rock gas (NG) of gaseous state mutually.
The LNG Liquefied natural gas flowing into working fluid bin 200 is vaporized, the portion of natural gas (NG) gasified as engine of boat and ship 300 fuel and supply, another part rock gas resupplies to Liquefied Natural Gas fuel tank 100.
Working fluid bin 200 is for making the rock gas (NG) of gas phase by the LNG Liquefied natural gas of liquid phase, Liquefied Natural Gas fuel tank 100 is connected by the first supply lines L1, the second supply lines L2 and recirculation circuit L3 with working fluid bin 200.
First supply lines L1 is connected to the top of Liquefied Natural Gas fuel tank 100, make LNG Liquefied natural gas flow into working fluid bin 200, as motor fuel supply after the LNG Liquefied natural gas supplied is gasified by working fluid bin 200 by the first supply lines L1.The rock gas gasified is supplied to engine of boat and ship 300 by fuel supply lines L4.
That is, the first supply lines L1 and fuel supply lines L4 is connected to the supervisor 240 of working fluid bin 200 inside, and LNG Liquefied natural gas becomes rock gas through supervisor 240, is supplied to fuel supply lines L4.
Preferably, first supply lines L1 and fuel supply lines L4 are provided with control valve V, make it possible to limit the flowing of LNG Liquefied natural gas or rock gas or can control their flow, whether and the control of opening and closing degree above-mentioned control valve V carries out opening and closing by control device 500.
In the present embodiment, be provided with the second supply lines L2 of bottom for connecting Liquefied Natural Gas fuel tank 100 and working fluid bin 200, and be provided with the recirculation circuit L3 on the top for connecting working fluid bin 200 and Liquefied Natural Gas fuel tank 100.
In addition, in the inside of working fluid bin 200, be provided with the auxiliary pipe 250 for connecting the second supply lines L2 and recirculation circuit L3.Supervisor 240 and auxiliary pipe 250 are formed independently of each other, the LNG Liquefied natural gas flowed into along the second supply lines L2, also gasify as rock gas through auxiliary pipe 250, rock gas is supplied to Liquefied Natural Gas fuel tank 100 by recirculation circuit L3, makes it possible to manage the internal pressure of Liquefied Natural Gas fuel tank 100 within the specific limits.
Below, by be connected to as above Liquefied Natural Gas fuel tank 100, heat exchanger 400, engine of boat and ship 300 the structure more specifically of working fluid bin 200 be described in detail.
In an embodiment of the present invention, working fluid bin 200 roughly comprises sleeve pipe 210, inlet side tube sheet 220, outlet side tube sheet 230, supervisor 240, auxiliary pipe 250.
Sleeve pipe 210 is the cylindrical body of hollow type, and base plate 211 is incorporated into the underpart of sleeve pipe 210, and top board 212 is incorporated into the upper end portion of sleeve pipe 210, and then realizes sealing.Further, in the side of sleeve pipe 210, a working fluid inflow entrance 213 and a working fluid exhaust port 214 is provided with.
Preferably, at the lower end outer surface of sleeve pipe 210, be provided with working fluid inflow entrance 213, outer surface near the upper end of sleeve pipe 210, is provided with working fluid exhaust port 214.Working fluid inflow entrance 213 and working fluid exhaust port 214 are by being connected to working fluid cycles circuit L6, and working fluid realizes heat exchange in heat exchanger 400.
Further, in the inner lower side of sleeve pipe 210, be on the skew provided with the first sealing plate P1, from the top of sleeve pipe 210 to the position of prescribed depth, be provided with the second sealing plate P2 that the left and right sides, inside of sleeve pipe 210 is sealed.
The space portion formed by the first sealing plate P1 and the second sealing plate P2, is sealed in the mode retained as the space of sky, and therefore, working fluid can not flow into this space portion.
Arrange the first sealing plate P1 and the second sealing plate P2 in the inside of sleeve pipe 210 be working fluid in order to enable inflow sleeve pipe 210 inside is rock gas by liquefied natural gas gasifying more effectively.
That is, the supervisor 240 and the auxiliary pipe 250 that are arranged at sleeve pipe 210 inside will be surrounded by working fluid, and when sleeve pipe 210 inside forms too much unnecessary space, working fluid can correspondingly reduce with the substantive heat exchange efficiency of supervisor 240 and auxiliary pipe 250.Further, the space portion realizing sealing by the first sealing plate P1 and the second sealing plate P2, plays a kind of effect of thermal-protective material, can reduce the temperature loss of the working fluid that the impact owing to being subject to outside air causes.
Fig. 5 is that sleeve pipe is correlated with plan view, and Fig. 6 is the substantially horizontal sectional view of Fig. 5, and Fig. 7 is the Vertical direction sectional view representing Fig. 5.Fig. 8 is the plan view of baffle plate, and Fig. 9 represents to be incorporated into the inlet side tube sheet of top board and the plan view of outlet side tube sheet.Figure 10 is pull bar and the exemplary plot keeping spacer element.
In the inner lower side of sleeve pipe 210, be provided with auxiliary pipe 250, auxiliary pipe 250 is in loop shape.According to the morphological character of auxiliary pipe 250, there is idle space in the lower inside of sleeve pipe 210.Therefore, in order to reduce above-mentioned idle space, be on the skew provided with the first sealing plate P1, and make the first sealing plate P1 bottom be sealing state.
From sleeve pipe 210 inner upper end to the position of adjacent auxiliary pipe 250, form the second long sealing plate P2, the front and back of sleeve pipe 210 inside or the left and right sides are sealed.
When the first sealing plate P1 and the second sealing plate P2 is incorporated into sleeve pipe 210, sleeve pipe 210 is divided internally into the space of the space of being filled by working fluid and the sky not flowing into working fluid.
In the space that sleeve pipe 210 inside is filled by working fluid, be provided with supervisor 240 and auxiliary pipe 250, the LNG Liquefied natural gas being supplied to supervisor 240 and auxiliary pipe 250 respectively accepts the heat of working fluid and gasifies as rock gas.
Further, preferably, multiple baffle plate B can be provided with in the inside of sleeve pipe 210, make to support supervisor 240 and the flowing guiding working fluid.
Multiple baffle plate B is configured with zigzag fashion, makes working fluid with Serrated Flow.
In the inside of sleeve pipe 210, that is, at the space portion of the sky of runway (track) form divided by the second sealing plate P2, be configured with multiple supervisor 240, each supervisor 240 is made up of the pipe of U-shaped.
Because multiple supervisor 240 is fixed in two end part and is inserted in the state of sleeve pipe 210 inside, supervisor 240 firmly should be fixed on assigned position.To this, in an embodiment according to the present invention, make use of that to improve liquefied natural gas gasifying as the waiting time by increasing working fluid be multiple baffle plates that the scheme of the efficiency of rock gas is arranged, achieving the firm of multiple supervisor 240.
Fig. 8 is the plan view of baffle plate, and as shown in the figure, each baffle plate B is platy morphology, and three are made up of straight line, and one side is made up of the curved surface of projection.At each baffle plate B, be formed with the multiple pore h inserted for supervisor 240.
In the present embodiment, employ totally 9 baffle plate B, be called the first baffle plate B1, second baffle B2, third gear plate B3, fourth gear plate B4, fifth gear plate B5, sixth gear plate B6, the 7th baffle plate B7, the 8th baffle plate B8, the 9th baffle plate B9 from bottom to top successively.
The curved face part of each baffle plate B is fixedly connected on the internal surface of sleeve pipe 210, isolates, working fluid can be moved with curved face part straight line face in opposite directions with the internal surface of sleeve pipe 210.Further, the left and right sides of curved face part are connected to the second sealing plate P2.
By making interlaced between adjacent baffle plate B configuration, form zigzag fashion form, such as: the curved face part of the right-hand end of the first baffle plate B1 is incorporated into the internal surface of sleeve pipe 210, and the curved face part of the left end of second baffle B2 is incorporated into the internal surface of sleeve pipe 210.
In the present embodiment, have the inside that 15 U-shaped supervisors 240 are arranged at sleeve pipe 210, each baffle plate B is provided with multiple pore h that can insert supervisor 240.
Further, be necessary between multiple baffle plate B to be formed regulation between the upper and lower every being fixed, therefore, be provided with pull bar T and keep spacer element S.
One end of pull bar T is connected to the top board 212 combined with the upper end portion of sleeve pipe 210, and the other end of pull bar T uses bolton in the bottom surfaces of the first baffle plate B1.
Here, four adjacent corners of each baffle plate B form one respectively for inserting the tie rod hole h1 of pull bar T.In order to make can to keep between adjacent baffle plate B to specify between the upper and lower every, the maintenance spacer element S of the tubulose around pull bar T outer surface is inserted pull bar T.
Due to keep spacer element S according to the rules length block, therefore, keep the length of spacer element S constant, and then make the baffle plate B of the inside being arranged at sleeve pipe 210 remain on assigned position.
On the top board 212 of upper end portion being incorporated into sleeve pipe 210, be provided with inlet side tube sheet 220 and outlet side tube sheet 230.
Inlet side tube sheet 220 is connected to Liquefied Natural Gas fuel tank 100 by the first supply lines L1, and outlet side tube sheet 230 is connected to fuel supply lines L4, and the rock gas gasified is supplied in engine of boat and ship 300.
Inlet side tube sheet 220 is formed multiple attachment holes 221 that the one end for supervisor 240 connects, outlet side tube sheet 230 is also formed multiple attachment holes 231 that the other end for supervisor 240 connects.
Inlet side tube sheet 220 and outlet side tube sheet 230 are separate structures, the predetermined distance be incorporated into top board 212 of being separated by.
Owing to LNG Liquefied natural gas to be supplied in by a first supply lines L1 one end of supervisor 240, so preferably inlet side tube sheet 220 comprises the inlet side lid 220a of the upper end portion that can encase supervisor 240, impingement plate 220b is set in the inside of inlet side lid 220a.
Inlet side tube sheet 220 is formed 15 attachment holes 221, and one end of supervisor 240 is incorporated into attachment hole 221.Therefore, inlet side lid 220a should be semicircle drum, makes it possible to cover the supervisor 240 being incorporated into attachment hole 221.
On the top of inlet side lid 220a, the first supply lines L1 connects communicatively, and in the positive bottom connected for the first supply lines L1, impingement plate 220b is arranged at the inside of inlet side lid 220a.Impingement plate 220b is to make the LNG Liquefied natural gas of inflow spread widely and being supplied to multiple supervisor 240 equably.
To flow in supervisor 240 and the LNG Liquefied natural gas gasified becomes rock gas, be supplied to engine of boat and ship 300 by fuel supply lines L4, outlet side tube sheet 230 is made up of with the impingement plate 230b of the inside being arranged at outlet side lid 230a the outlet side lid 230a being communicated with fuel supply lines L4 equally.
The LNG Liquefied natural gas flowing into inlet side tube sheet 220 is ultra low temperature state, and about reach-160 DEG C, LNG Liquefied natural gas becomes the rock gas of normal temperature through being responsible for 240 gasifications, discharge along the fuel supply lines L4 be connected with outlet side tube sheet 230.
That is, high temperature difference can be formed between inlet side tube sheet 220 and outlet side tube sheet 230.If inlet side tube sheet 220 and being integrally formed of outlet side tube sheet 230 of said temperature difference will be formed, so occur being caused the possibility of the problems such as crack by thermal distortion just high.
Therefore, in the present invention, be also incorporated into top board 212 respectively by thorough separate inlet opening side pipe plate 220 and outlet side tube sheet 230, bad heat affecting is minimized.
Be arranged at the supervisor 240 of the U-shaped of sleeve pipe 210 inside, its one end is connected to the attachment hole 221 of inlet side tube sheet 220, and the other end is connected to the attachment hole 231 of outlet side tube sheet 230.Further, fried dough twist syringe (twistpintube) 241 can be built-in with in supervisor 240 inside.Fried dough twist syringe 241 plays a kind of LNG Liquefied natural gas making inflow be responsible for 240 and more effectively gasifies as the effect of rock gas.Fried dough twist syringe 241 arranges to improve heat transference efficiency, belongs to normally used method, is described in detail in this omission.
Auxiliary pipe 250 is provided with near sleeve pipe 210 interior lower end, by the second supply lines L2, the LNG Liquefied natural gas of Liquefied Natural Gas fuel tank 100 flows into auxiliary pipe 250, is again supplied to Liquefied Natural Gas fuel tank 100 after liquefied natural gas gasifying by recirculation circuit L3.
Namely, in an embodiment of the present invention, adopt dual gasification mode, specifically, causing the internal pressure of Liquefied Natural Gas fuel tank 100 to reduce for being expelled to supervisor 240 along with LNG Liquefied natural gas from Liquefied Natural Gas fuel tank 100, compensating the internal pressure of above-mentioned Liquefied Natural Gas fuel tank by the rock gas of gasification in auxiliary pipe 250 is supplied to Liquefied Natural Gas fuel tank 100.
Further, preferably ventilating hole or safety valve are set at the top board 212 of sleeve pipe 210.
At the second supply lines L2 or recirculation circuit L3, control valve V is also set, make by the opening and closing of control device 500 couples of control valve V whether or opening and closing degree adjust.Such as, when the internal pressure of Liquefied Natural Gas fuel tank 100 sharply declines, opening controlling valve V to greatest extent, makes more rock gas be supplied to the inside of Liquefied Natural Gas fuel tank 100.The pressure tester that can detect internal pressure is preferably set at Liquefied Natural Gas fuel tank 100, makes it possible to the internal pressure value that Liquefied Natural Gas fuel tank 100 is provided to control device 500.
The rock gas (NG) of gasification in working fluid bin 200 uses as fuel by engine of boat and ship 300, connects working fluid bin 200 by fuel supply lines L4.
Preferably, rock gas uses as fuel by engine of boat and ship 300, also can pass through burns gasoline or diesel oil work.That is, when starting in the early stage, gasoline or diesel oil are used as fuel, engine of boat and ship is heated to a certain degree, is used by rock gas as fuel.
The liquefied natural gas gasifying of inflow working fluid bin 200, under the working fluid effect of heating with set point of temperature, is rock gas by working fluid bin 200.
In an embodiment of the present invention, as the heating unit of working fluid, be provided with heat exchanger 400.Especially, heat exchanger 400 utilizes the used heat of engine of boat and ship 300, improves the temperature of working fluid.
Preferably, heat exchanger 400 is template heat exchanger, is provided with cooling water circulation circuit L5, and the cooling water of engine of boat and ship 300 is circulated through the inside of heat exchanger 400.Further, heat exchanger 400 is provided with the working fluid cycles circuit L6 connecting working fluid bin 200.
To flow the cooling water of high temperature at cooling water circulation circuit L5, to flow the working fluid of relative low temperature at working fluid cycles circuit L6.Therefore, working fluid absorbs heat in the inside of heat exchanger 400 by heat exchange and after being heated, is supplied to the inside of working fluid bin 200.
Water can use as working fluid, in the present embodiment using ethylene glycol solution (GlycolWater) as working fluid.Ethylene glycol solution represents that the ethylene glycol of 50% is mixed to the solution of water.Its heat transfer characteristic of ethylene glycol solution is outstanding, is very suitable as working fluid.
Because heat exchanger 400 of the present invention utilizes the used heat of engine of boat and ship 300 to heat working fluid, there is the advantage that can reduce unnecessary energy consumption.
Further, control valve V is set in cooling water circulation circuit L5 and working fluid cycles circuit L6, makes it possible to the flow of controlled cooling model water or working fluid.
Especially, in an embodiment of the present invention, by adjusting the flow of working fluid, the gasification degree of the LNG Liquefied natural gas formed in working fluid bin 200 can be controlled.
That is, when needing the output power being increased sharply engine of boat and ship 300, LNG Liquefied natural gas is answered rapid phase transition to be rock gas and is supplied rapidly by fuel supply lines L4.
In this case, open the control valve V of working fluid cycles circuit L6 to greatest extent, make the maximize throughput of working fluid, open the control valve V of cooling water circulation circuit L5 simultaneously, the heat exchange in heat exchanger 400 is maximized, makes cooling water Rapid Circulation.
Working fluid rises rapidly through its temperature of heat exchanger 400, and the working fluid of heating is supplied to working fluid bin 200, accelerates the gasification rate of LNG Liquefied natural gas.
In this case, when the control valve V opening the first supply lines L1 is to greatest extent to improve the delivery volume of LNG Liquefied natural gas, corresponding rock gas can be supplied rapidly for the output power needed for engine of boat and ship 300.
In an embodiment of the present invention, first supply lines L1, the second supply lines L2, recirculation circuit L3, fuel supply lines L4, cooling water circulation circuit L5, working fluid cycles circuit L6 can be attached with various determination sensor, also can arrange the mandatory transfer units such as the pump of regulation.This part belongs to public technology, and omission is described in detail.That is, other elements such as various sensor or pump, according to performance of the present invention, optionally can add.Various sensor represents such as temperature transducer, pressure transducer, flow transducer etc.
And, control device 500 controls automatically to engine of boat and ship Liquefied Natural Gas fuel system according to the present invention on the whole, based on inputing to the various data of control device 500 and having imposed a condition, by the control of various control valve V, the rock gas of appropriate amount is supplied to engine of boat and ship 300 as fuel.
As above according to engine of boat and ship Liquefied Natural Gas fuel supply system of the present invention, it is made to use as the fuel of engine of boat and ship 300 by the LNG Liquefied natural gas extracting Liquefied Natural Gas fuel tank 100, and by improving the liquefied natural gas gasifying of low-temperature condition the structure of the working fluid bin 200 being the rock gas of normal temperature, the gasification efficiency of LNG Liquefied natural gas is maximized, improves structure stability.
Especially, in the present invention, the position that LNG Liquefied natural gas flows into working fluid bin 200 and the spot temperature difference that the LNG Liquefied natural gas gasified is discharged with rock gas larger, this temperature difference will cause thermal distortion, and then cause the impaired of working fluid bin 200, in order to prevent this damaged phenomenon, by arranging independently inlet side tube sheet 220 and outlet side tube sheet 230 at top board 212, prevent the fire damage caused by temperature difference, and then improve durability.
Further, the present invention, by utilizing multiple baffle plate B, the first sealing plate P1, the second sealing plate P2, provides a kind of structure that can improve in supervisor 240 and auxiliary pipe 250 uniqueness by liquefied natural gas gasifying being the gasification efficiency of rock gas.
Aforementioned related description of the present invention is only illustration, and for those skilled in the art, it is apparent for can carrying out distortion with other concrete forms under the prerequisite not changing technological thought of the present invention or essential feature.
Therefore, above-described embodiment is only illustration in all respects, does not limit right of the present invention.Such as, can implement with dispersing morphology with each element that combined type illustrates, equally, the element illustrated with decentralized also can be implemented with combining form.
Scope of the present invention is not limited to above-mentioned detailed description, and depends on claims, and the implication of claims and scope and all changes of being derived by its equivalents or deformation form all should belong to protection scope of the present invention.
It is in the boats and ships of fuel with LNG Liquefied natural gas that the present invention can utilize at LNG Liquefied natural gas special purpose ship or other.
Claims (5)
1. an engine of boat and ship Liquefied Natural Gas fuel supply system, comprising:
Liquefied Natural Gas fuel tank, it stores LNG Liquefied natural gas;
Working fluid storage tank, it is connected with described Liquefied Natural Gas fuel tank, utilizes the working fluid capable of circulation stored, gasifies to LNG Liquefied natural gas, its part supplied as motor fuel, its another part resupplies to described Liquefied Natural Gas fuel tank;
Engine of boat and ship, the rock gas gasified by described working fluid bin is used as fuel by it;
Fuel supply lines, it connects described working fluid bin and engine of boat and ship, and the rock gas gasified is supplied to engine of boat and ship;
Cooling water circulation circuit, it is connected with described engine of boat and ship, and Cooling Water circulates;
Working fluid cycles circuit, it is connected with described working fluid bin, for described working fluid cycles; And
Heat exchanger, itself and described cooling water circulation circuit and described working fluid cycles connection, make cooling water and working fluid carry out heat exchange,
It is characterized in that,
Described working fluid bin, comprising:
Sleeve pipe, it realizes sealing by base plate and top board, and forms working fluid inflow entrance and working fluid exhaust port;
Inlet side tube sheet, it is incorporated into described top board, forms multiple attachment hole, is connected to the first supply lines be connected with described Liquefied Natural Gas fuel tank;
Outlet side tube sheet, itself and described inlet side tube sheet are incorporated into described top board isolator, form multiple attachment hole, are connected to described fuel supply lines;
Be arranged at the supervisor of described inside pipe casing, its upper one end is connected with the described attachment hole of described inlet side tube sheet, and the top the other end is connected with the described attachment hole of described outlet side tube sheet, and LNG Liquefied natural gas is gasified; And
Auxiliary pipe near the interior lower end being arranged at described sleeve pipe, it is supplied to the inner space of described Liquefied Natural Gas fuel tank after being vaporized by the LNG Liquefied natural gas flowed into tank connected second supply lines of described Liquefied Natural Gas fuel along recirculation circuit.
2. engine of boat and ship Liquefied Natural Gas fuel supply system according to claim 1, is characterized in that,
Described inlet side tube sheet comprises: be communicated with described first supply lines and carry out coated inlet side lid to the upper end portion of the described supervisor being inserted in described attachment hole; Be arranged at the impingement plate of described inlet side cover inside,
Described outlet side tube sheet comprises: be communicated with described fuel supply lines and carry out coated outlet side lid to the upper end portion of the described supervisor being inserted in described attachment hole; Be arranged at the impingement plate of described outlet side cover inside.
3. engine of boat and ship Liquefied Natural Gas fuel supply system according to claim 1 and 2, is characterized in that,
At described sleeve pipe, be provided with the first sealing plate, it is formed at the idle space of described auxiliary pipe bottom for reducing; Also be provided with the second sealing plate, it seals in the left and right sides of position to described inside pipe casing than the described more top side of auxiliary pipe, prevents working fluid from flowing into wherein.
4. engine of boat and ship Liquefied Natural Gas fuel supply system according to claim 1 and 2, is characterized in that,
In the inside of described sleeve pipe, be provided with multiple baffle plate, these baffle plates described multiple supervisor of supporting also with zigzag arrangement, makes the flowing indention of working fluid.
5. engine of boat and ship Liquefied Natural Gas fuel supply system according to claim 4, is characterized in that,
Described baffle plate is connected by multiple pull bar, and by being inserted in the maintenance spacer element of pull bar, makes to keep a determining deviation between described baffle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210214274.1A CN103511127B (en) | 2012-06-25 | 2012-06-25 | Engine of boat and ship Liquefied Natural Gas fuel supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210214274.1A CN103511127B (en) | 2012-06-25 | 2012-06-25 | Engine of boat and ship Liquefied Natural Gas fuel supply system |
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| CN103511127A CN103511127A (en) | 2014-01-15 |
| CN103511127B true CN103511127B (en) | 2016-01-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109863081B (en) * | 2016-10-05 | 2021-11-23 | 大宇造船海洋株式会社 | System and method for supplying fuel gas to ship |
| WO2020050404A1 (en) * | 2018-09-06 | 2020-03-12 | 川崎重工業株式会社 | Ship |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261951A (en) * | 1997-06-20 | 2000-08-02 | 埃克森生产研究公司 | LNG fuel storage and delivery systems for natural gas powerd vehicles |
| CN1898125A (en) * | 2003-12-18 | 2007-01-17 | 瓦特西拉芬兰有限公司 | Gas supply arrangement of a marine vessel and method of providing gas in a gas supply arrangement of a marine vessel |
| CN101265859A (en) * | 2006-12-22 | 2008-09-17 | 曼柴油机欧洲股份公司 | Gas supply system for a drive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100835090B1 (en) * | 2007-05-08 | 2008-06-03 | 대우조선해양 주식회사 | System and method for supplying fuel gas of lng carrier |
| KR101405582B1 (en) * | 2008-09-09 | 2014-06-10 | 현대자동차주식회사 | Fuel supplying device for liquefied natural gas vehicle |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261951A (en) * | 1997-06-20 | 2000-08-02 | 埃克森生产研究公司 | LNG fuel storage and delivery systems for natural gas powerd vehicles |
| CN1898125A (en) * | 2003-12-18 | 2007-01-17 | 瓦特西拉芬兰有限公司 | Gas supply arrangement of a marine vessel and method of providing gas in a gas supply arrangement of a marine vessel |
| CN101265859A (en) * | 2006-12-22 | 2008-09-17 | 曼柴油机欧洲股份公司 | Gas supply system for a drive |
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Effective date of registration: 20180605 Address after: Busan, South Korea Patentee after: Cruise Co., Ltd. Address before: Busan, South Korea Patentee before: U& S Co., Ltd. |