CN114526178A - Fuel supply device for internal combustion engine of ammonia-powered ship - Google Patents
Fuel supply device for internal combustion engine of ammonia-powered ship Download PDFInfo
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- CN114526178A CN114526178A CN202210184700.5A CN202210184700A CN114526178A CN 114526178 A CN114526178 A CN 114526178A CN 202210184700 A CN202210184700 A CN 202210184700A CN 114526178 A CN114526178 A CN 114526178A
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- heating
- pipeline
- ammonia
- internal combustion
- combustion engine
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 51
- 239000000446 fuel Substances 0.000 title claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 110
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 103
- 230000008016 vaporization Effects 0.000 claims abstract description 21
- 238000009834 vaporization Methods 0.000 claims abstract description 20
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 229910021529 ammonia Inorganic materials 0.000 abstract description 16
- 239000002828 fuel tank Substances 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/06—Apparatus for de-liquefying, e.g. by heating
-
- 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
Abstract
The invention discloses a fuel supply device of an internal combustion engine of an ammonia-powered ship, which comprises a liquid ammonia vaporization assembly, a heating assembly and a fuel tank, wherein the liquid ammonia vaporization assembly comprises a conveying pipeline for connecting a liquid ammonia tank and the internal combustion engine, a shunting piece arranged on the conveying pipeline, and the heating assembly arranged on the conveying pipeline between the liquid ammonia tank and the shunting piece; the decomposition temperature adjusting assembly comprises a heat conduction pipeline connected between the shunting part and the internal combustion engine, a heating part arranged on the heat conduction pipeline, and a temperature adjusting part arranged on the outer side of the heating part, and the temperature adjusting part and the heating assembly are communicated to form a circulation loop. The invention solves the problems that ammonia is difficult to burn and harmful gas is generated by incomplete combustion, and simultaneously, the tail gas discharged by the internal combustion engine of the ship is completely green and pollution-free. Meanwhile, the ammonia gas decomposition device is utilized, the storage space of the combustion improver is not required to be additionally increased, only a liquid ammonia vaporization component is required to be improved and added on the basis of the liquid ammonia vaporization device, and the transportation cost is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of ships, and particularly relates to a fuel supply device for an internal combustion engine of an ammonia power ship.
Background
At present, the ships mainly use traditional fuel oil as fuel of internal combustion engines, but the fuel can generate a large amount of nitrogen oxides and sulfur oxides when being combusted, and the combustion products can cause serious harm to the environment and cause atmospheric pollution. With the development of the times, people pay more and more attention to environmental protection, and the use of fuel oil as fuel undoubtedly goes against the primary heart of green development of people. The international maritime organization (IM0) puts forward a strict requirement on emission reduction of ships, the country also actively advocates green development of the ships, and in order to solve the problem, cleaner energy sources such as LNG (liquefied natural gas-163 ℃), liquid hydrogen (-253 ℃), methanol and the like appear, wherein the LNG is widely applied to the ships, the LNG fuel can greatly reduce the generation of nitrogen oxides and sulfur oxides of the ships, and has a remarkable effect on emission reduction of the ships, but the main component of the liquefied natural gas is methane, and the combustion of the methane can generate greenhouse gas carbon dioxide, so that a greenhouse effect is caused. The ammonia fuel is a clean fuel, the complete combustion product of the ammonia fuel is sulfur-free and carbon-free, and the ammonia fuel is used for internal combustion engine fuel and hardly generates nitrogen oxide and carbon dioxide.
The ammonia fuel is stored on the ship in the state of liquid ammonia, the temperature is-33 ℃, and compared with the traditional fuel, the ammonia fuel is more environment-friendly and saves a large amount of space. The ammonia fuel needs to be gasified into ammonia gas before entering the internal combustion engine and then combusted, however, pure ammonia gas is a substance which is difficult to combust, and ammonia gas is easy to combust when mixed with air and can generate explosion and nitrogen oxide, so that the danger of the generated nitrogen oxide is increased, and the original purpose is also violated.
Based on the above problems, if an ingenious method can be used to ensure the complete combustion of ammonia fuel to avoid environmental pollution under the condition of reducing the storage cost of the fuel, the method has better application prospect and practical application value.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a fuel supply device for an internal combustion engine of an ammonia-powered ship, which aims to solve the problems that pure ammonia gas is difficult to combust and the ammonia gas is easy to explode and generate nitrogen oxides when mixed with air in the prior art.
The invention is realized by adopting the following technical scheme:
a fuel supply device of an internal combustion engine of an ammonia power ship is used for decomposing and gasifying liquid ammonia and comprises a liquid ammonia vaporization assembly, wherein the liquid ammonia vaporization assembly comprises a conveying pipeline for connecting a liquid ammonia tank and the internal combustion engine, a flow dividing piece arranged on the conveying pipeline and a heating assembly arranged on the conveying pipeline between the liquid ammonia tank and the flow dividing piece;
the decomposition temperature adjusting assembly comprises a heat conduction pipeline connected between the shunting part and the internal combustion engine, a heating part arranged on the heat conduction pipeline, and a temperature adjusting part arranged on the outer side of the heating part, and the temperature adjusting part and the heating assembly are communicated to form a circulation loop.
In order to optimize the technical scheme, the specific measures adopted further comprise:
further, heating element includes heating pipeline and heat conduction cover, the heat conduction cover is established on the pipeline, be provided with the one-way draw-in groove of interval winding on the heating pipeline, the heating pipeline block is in one-way draw-in groove.
Furthermore, the temperature adjusting part comprises a heat insulation box and a heat conduction box, the heat insulation box is of a hollow structure, the heat conduction box is arranged inside the heat insulation box, the heat conduction pipeline is arranged in the heat insulation box, a flow channel is formed between the outer wall of the heat conduction box and the inner wall of the heat insulation box, and the flow channel is communicated with the heating pipeline to form a circulation loop.
Furthermore, heat-conducting media are arranged in the flow channel and the heating pipeline.
Further, the heat conduction pipeline is S type structure, the heating member includes one end open-ended heating jacket, heating seat, the heating jacket from top to bottom overlaps establishes on the heat conduction pipeline, the heating seat is by supreme interlude down between adjacent heat conduction pipeline, heating seat and heating jacket joint.
Furthermore, the heating seat comprises a bottom plate and side plates, the side plates are perpendicular to the bottom plate, the side plates are arranged on the bottom plate at intervals in parallel, the side plates are inserted into gaps between adjacent heat conducting pipelines from bottom to top, and heating resistance wires are arranged on the side faces, in contact with the heat conducting pipelines, of the side plates and the bottom plate.
Furthermore, the side wall of the side plate contacting the heat conducting pipeline and the side wall of the bottom plate contacting the heat conducting pipeline are both inwards concave arc-shaped surfaces, and the arc-shaped curvature of each arc-shaped surface is consistent with the outer diameter of the heat conducting pipeline contacting the side plate.
Further, an installation groove is formed in the heating sleeve, and a heating resistance wire is arranged in the installation groove.
Furthermore, the heating sleeve is provided with an elastic belt, a clamping groove is formed in the side wall, contacted with the elastic belt, of the side plate, a clamping piece for clamping the elastic belt is arranged in the clamping groove, the clamping piece comprises a clamping plate, a plurality of magnets are correspondingly arranged on the side wall, contacted with the side plate, of the clamping plate, and the lower end of the clamping piece is hinged to the clamping groove.
Further, a temperature control part is arranged on the heating pipeline, and the temperature control part is connected with the water tank through a pipeline.
The invention has the beneficial effects that:
compared with the prior art, the fuel supply device for the internal combustion engine of the ammonia-powered ship solves the problems that ammonia gas is difficult to combust and harmful gas is generated due to incomplete combustion, and exhaust gas discharged by the internal combustion engine of the ship is completely green and pollution-free.
The invention utilizes the ammonia decomposition device, does not need to additionally increase the storage space of the combustion improver, only needs to improve and add a liquid ammonia vaporization component on the basis of the liquid ammonia vaporization device, and greatly reduces the transportation cost.
The water circulation temperature adjusting device used by the invention utilizes the cold energy of the ammonia fuel to cool the liquid ammonia vaporization assembly, and the heat energy generated by ammonia decomposition is used for liquid ammonia decomposition, thereby solving the problem of ammonia fuel cold energy waste, fully utilizing the energy, reducing the load of a ship power grid, reducing the fuel consumption and reducing the operation cost damage of the ship.
Drawings
Fig. 1 is a schematic structural diagram of a fuel supply device of an internal combustion engine of an ammonia-powered ship.
Fig. 2 is a schematic structural diagram of the temperature-regulating module of fig. 1 according to the present invention.
Fig. 3 is a schematic diagram of a portion of the temperature adjustment assembly of fig. 2 according to the present invention.
Fig. 4 is another schematic structural diagram of the temperature adjustment component in fig. 2 according to the present invention.
Fig. 5 is a schematic view of the heating jacket of fig. 4 according to the present invention.
FIG. 6 is a structural diagram of the heating base of FIG. 4 according to one embodiment of the present invention.
Fig. 7 is a structural view illustrating another state of the heating base of fig. 4 according to the present invention.
Fig. 8 is a partial schematic view of the clamping plate of fig. 7 in accordance with the present invention.
The reference signs are: liquid ammonia vaporization component 10, conveying pipeline 11, flow dividing component 12, heating component 13, heating pipeline 131, heat conducting sleeve 132, one-way clamping groove 133, buckle 134, buffer tank 14, booster pump 15, electromagnetic valve 16, decomposition temperature regulating component 20, heat conducting pipeline 21, heating component 22, heating sleeve 221, elastic band 222, heating seat 223, bottom plate 2231, side plate 2232, heating resistance wire 224, clamping component 225, clamping plate 2251, magnet 2252, rotating shaft 2253, gas purifier 23, temperature regulating component 24, heat insulation box 241, heat conducting box 242, liquid ammonia tank 30, internal combustion engine 40, temperature control component 50, one-way valve 60 and water tank 70.
Detailed Description
In order to clarify the technical solution and the working principle of the present invention, the present invention is further described in detail with reference to the following embodiments in conjunction with the accompanying drawings, it should be noted that, in the premise of not conflicting, any combination between the embodiments described below or between the technical features may form a new embodiment.
The invention provides a fuel supply device of an internal combustion engine of an ammonia-powered ship, which comprises a liquid ammonia vaporization assembly 10 and a decomposition temperature regulation assembly 20, wherein the liquid ammonia vaporization assembly 10 is used for connecting a liquid ammonia tank 30 and the internal combustion engine 40, heating, decomposing and vaporizing liquid ammonia flowing out of the liquid ammonia tank 30 and then conveying the liquid ammonia to the internal combustion engine 40 for combustion, and the decomposition temperature regulation assembly 20 is used for circularly supplying heating temperature to the liquid ammonia vaporization assembly, so that the liquid ammonia vaporization assembly can continuously maintain stable temperature to vaporize the liquid ammonia.
Referring to fig. 1, the liquid ammonia vaporization assembly includes a delivery pipe 11 connecting a liquid ammonia tank 30 and an internal combustion engine 40, a flow divider 12 disposed on the delivery pipe 11, a heating assembly 13 disposed on the delivery pipe 11 between the liquid ammonia tank 30 and the flow divider 12, and a buffer tank 14 disposed between the delivery pipe 11 and the internal combustion engine 40.
A booster pump 15 and an electromagnetic valve 16 are arranged between the liquid ammonia tank 30 and the conveying pipeline 11, the electromagnetic valve 16 is used for realizing the connection and disconnection between the liquid ammonia tank 30 and the conveying pipeline 11, and the booster pump 15 is used for conveying liquid ammonia into the conveying pipeline 11.
The flow divider 12 is used for dividing the vaporized ammonia gas, wherein one part of the vaporized ammonia gas enters the buffer tank 14 through the conveying pipeline 11 to relieve the pressure generated by the expansion of the vaporized volume, and the other part of the vaporized ammonia gas is conveyed to the decomposition temperature adjusting assembly 2020 for ammonia decomposition. The flow dividing member 12 is a flow dividing valve, and the flow dividing ratio is set according to actual needs, which is not specifically limited in this embodiment.
Referring to fig. 1 again, the decomposition and temperature adjustment assembly 20 includes a heat transfer pipe 21 connected between the flow dividing member 12 and the internal combustion engine 40, a heating member 22 disposed on the heat transfer pipe 21, a gas purifier 23 disposed between the heat transfer pipe 21 and the internal combustion engine 40, and a temperature adjustment member 24 disposed outside the heating member 22, the temperature adjustment member 24 being communicated with the heating assembly 13 to form a circulation loop.
Referring to fig. 2-3, the temperature adjusting member 24 includes a heat insulation box 241 and a heat conduction box 242, the heat insulation box 241 is a hollow structure, the heat conduction box 242 is disposed inside the heat insulation box 241, the heat conduction pipeline 21 is disposed inside the heat insulation box 241, a flow channel a is formed between an outer wall of the heat conduction box 242 and an inner wall of the heat insulation box 241, the flow channel a is communicated with the heating pipeline 131 to form a circulation loop, and a height of the flow channel a is greater than a cross-sectional diameter of the heat conduction pipeline 21. The heat conduction box 242 is made of heat-resistant steel, and heat conduction media, in which water is used in the present embodiment, are disposed in the flow channel a and the heating pipeline 131. It can be understood that: when the heat conduction pipeline 21 passes through the flow channel A outwards to be connected with the flow dividing member or the gas purifier 23, the height of the flow channel A is larger than the cross-sectional diameter of the heat conduction pipeline 21, so that the normal circulation of water flow is not hindered.
Referring to fig. 4-8, the heat conducting pipeline 21 is an S-shaped structure, the heating element 22 includes a heating sleeve 221 with an opening at one end and a heating seat 223, the heating sleeve 221 is sleeved on the heat conducting pipeline 21 from top to bottom, an installation groove is provided in the heating sleeve 221, and a heating resistance wire 224 is provided in the installation groove. The heating jacket 221 is made of heat conductive silicon adhesive tape, and the heating resistance wire 224 is installed in an embedded manner, so that the heating jacket 221 and the heat conduction pipeline 21 are attached more tightly. The heating resistance wire 224 is made of nickel-chromium alloy.
The heating seat 223 is inserted between the adjacent heat conduction pipelines 21 from bottom to top, and the heating seat 223 is clamped with the heating jacket 221. The heating base 223 comprises a bottom plate 2231 and side plates 2232, the side plates 2232 and the bottom plate 2231 are perpendicular to each other, the side plates 2232 are arranged on the bottom plate 2231 at intervals in parallel, the side plates 2232 are inserted into gaps between adjacent heat conducting pipelines 21 from bottom to top, and heating resistance wires 224 are arranged on the side surfaces of the side plates 2232 and the bottom plate 2231, which are in contact with the heat conducting pipelines 21. The side wall of the side plate 2232 contacting the heat conducting pipeline 21 and the side wall of the bottom plate 2231 contacting the heat conducting pipeline 21 are both concave arc-shaped surfaces, and the arc curvature of the arc-shaped surfaces is consistent with the outer diameter of the heat conducting pipeline 21 contacting the side plate 2232. It can be understood that: the side plates 2232 and the bottom plate 2231 are arranged in a structure, so that the heat conducting pipeline 21 can be better heated, and the ammonia gas is guaranteed to be heated uniformly.
Referring to fig. 5, in order to better connect the heating jacket 221 and the heating seat 223 in a matching manner, an elastic band 222 is disposed on the heating jacket 221, a clamping groove is disposed on a side wall of the side plate 2232 contacting the elastic band 222, a clamping member 225 for clamping the elastic band 222 is disposed in the clamping groove, the clamping member 225 includes a clamping plate 2251, a plurality of magnets 2252 are correspondingly disposed on the side wall of the clamping plate 2251 contacting the side plate 2232, a lower end of the clamping member 225 is hinged to the clamping groove, a rotating shaft 2253 is inserted into a lower end of the clamping plate 2251, and two ends of the rotating shaft 2253 penetrate through the clamping plate 2251 and are rotatably connected to the clamping groove.
The mixed product obtained by heating and decomposing the ammonia gas is sent to the gas purifier 23 for purification treatment to remove the nitride and moisture generated by the ammonia gas combustion to obtain pure hydrogen gas, and then the hydrogen gas is mixed with the ammonia gas output from the buffer tank 14 and then sent to the internal combustion engine 40 for combustion.
Referring to fig. 1 again, a temperature control element 50 is disposed on the heating pipeline 131, one end of the water tank 70 is connected to the temperature control element 50, the other end of the water tank 70 is connected to the heating pipeline 131, a check valve 60 is disposed between the water tank 70 and the heating pipeline 131, and the water tank 70 and the heating pipeline 131 are connected to form a loop. It can be understood that: monitoring the temperature of the heating pipeline 131 through the temperature control part 50, switching the temperature control parts 50 when the temperature detected by the temperature control parts is too high or too low, closing the interfaces directly communicated with the decomposition temperature regulation component 20, opening the interfaces connected with the water tank 70, simultaneously opening the one-way valve 60, and participating in the overall circulation by using water in the water tank 70, wherein if the temperature detected by the temperature control parts is too high, the water temperature in the water tank 70 is lower than the water temperature in the heating pipeline 131; if the temperature control 50 detects that the temperature is too low, the water temperature in the water tank 70 is higher than the water temperature in the heating line 131. Thereby ensuring the efficiency of the vaporization of the liquid ammonia.
The working principle of the invention is as follows:
during the ship sailing, as shown in fig. 2, the electromagnetic valve 16 is opened, the liquid ammonia in the liquid ammonia tank 30 is conveyed to the liquid ammonia vaporization assembly 10 through the booster pump 15, the heating assembly 13 surrounds the heating pipeline 131, the liquid ammonia is vaporized into ammonia gas when absorbing heat to-33.5 ℃, the ammonia gas enters the flow dividing member 12, and cold energy generated by the vaporization of the liquid ammonia is collected by the decomposition temperature adjusting assembly 20. The ammonia gas enters the flow divider 12, and then a part of the ammonia gas enters the buffer tank 14 to eliminate the pressure generated by the expansion of the gasification volume.
As shown in fig. 3, another part of the ammonia gas enters the heat conducting pipeline 21, the ammonia gas is heated according to the principle of hydrogen production by ammonia decomposition to be decomposed into ammonia gas, and then the decomposition product is purified by a gas purifier 2319 to remove nitride and moisture.
And finally, pure ammonia gas and hydrogen gas are mixed and then are introduced into the internal combustion engine 40, so that the ammonia gas can be completely combusted, the combustion efficiency of the ammonia gas is improved, and meanwhile, harmful gases in tail gas are reduced.
Meanwhile, heat energy generated by heating is transferred to the heat-conducting medium in the flow channel a through the heat-conducting box 242, and then when the heated heat-conducting medium flows to the heating pipeline 131, liquid ammonia in the conveying pipeline 11 wrapped by the heating pipeline 131 is subjected to heat absorption evaporation, and simultaneously cold energy generated by gasifying liquid ammonia is conveyed to the heat-conducting medium again, so that the medium continuously flows in the flow channel a and the heating pipeline 131 in a circulating manner. The continuous operation of the whole device is realized.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (10)
1. A fuel supply device of an internal combustion engine of an ammonia-powered ship is used for decomposing and gasifying liquid ammonia, and is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the liquid ammonia vaporization assembly comprises a conveying pipeline for connecting the liquid ammonia tank and the internal combustion engine, a flow dividing piece arranged on the conveying pipeline, and a heating assembly arranged on the conveying pipeline between the liquid ammonia tank and the flow dividing piece;
the decomposition temperature adjusting assembly comprises a heat conduction pipeline connected between the shunting part and the internal combustion engine, a heating part arranged on the heat conduction pipeline, and a temperature adjusting part arranged on the outer side of the heating part, and the temperature adjusting part and the heating assembly are communicated to form a circulation loop.
2. The ammonia-powered marine internal combustion engine fuel supply apparatus according to claim 1, characterized in that: the heating assembly comprises a heating pipeline and a heat conduction sleeve, the heat conduction sleeve is sleeved on the conveying pipeline, one-way clamping grooves wound at intervals are formed in the heating pipeline, and the heating pipeline is clamped in the one-way clamping grooves.
3. The ammonia-powered marine internal combustion engine fuel supply apparatus according to claim 2, characterized in that: the temperature adjusting piece comprises a heat insulation box and a heat conduction box, the heat insulation box is of a hollow structure, the heat conduction box is arranged inside the heat insulation box, the heat conduction pipeline is arranged in the heat insulation box, a flow channel is formed between the outer wall of the heat conduction box and the inner wall of the heat insulation box, and the flow channel is communicated with the heating pipeline to form a circulation loop.
4. The ammonia-powered marine internal combustion engine fuel supply apparatus according to claim 3, characterized in that: and heat-conducting media are arranged in the flow channel and the heating pipeline.
5. The ammonia-powered marine internal combustion engine fuel supply apparatus according to claim 3, characterized in that: the heat conduction pipeline is S type structure, the heating member includes one end open-ended heating jacket, heating seat, the heating jacket from top to bottom overlaps establishes on the heat conduction pipeline, the heating seat alternates between adjacent heat conduction pipeline by supreme down, heating seat and heating jacket joint.
6. The ammonia-powered marine internal combustion engine fuel supply apparatus according to claim 5, characterized in that: the heating seat comprises a bottom plate and side plates, the side plates are perpendicular to the bottom plate, the side plates are arranged on the bottom plate at intervals in parallel, the side plates are inserted into gaps between adjacent heat conducting pipelines from bottom to top, and heating resistance wires are arranged on the side faces, contacting with the heat conducting pipelines, of the side plates and the bottom plate.
7. The ammonia-powered marine internal combustion engine fuel supply apparatus according to claim 6, characterized in that: the side wall of the side plate, which is in contact with the heat conducting pipeline, and the side wall of the bottom plate, which is in contact with the heat conducting pipeline, are both inwards concave arc-shaped surfaces, and the arc-shaped curvature of each arc-shaped surface is consistent with the outer diameter of the heat conducting pipeline in contact.
8. The ammonia-powered marine internal combustion engine fuel supply apparatus according to claim 7, characterized in that: the heating sleeve is internally provided with an installation groove, and a heating resistance wire is arranged in the installation groove.
9. The ammonia-powered marine internal combustion engine fuel supply apparatus of claim 8, wherein: the heating sleeve is provided with an elastic belt, a clamping groove is formed in the side wall, contacted with the elastic belt, of the side plate, a clamping piece for clamping the elastic belt is arranged in the clamping groove, the clamping piece comprises a clamping plate, a plurality of magnets are correspondingly arranged on the side wall, contacted with the side plate, of the clamping plate, and the lower end of the clamping piece is hinged to the clamping groove.
10. The ammonia-powered marine internal combustion engine fuel supply apparatus according to claim 2, characterized in that: the heating pipeline is provided with a temperature control part, and the temperature control part is connected with the water tank through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184700.5A CN114526178A (en) | 2022-02-25 | 2022-02-25 | Fuel supply device for internal combustion engine of ammonia-powered ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184700.5A CN114526178A (en) | 2022-02-25 | 2022-02-25 | Fuel supply device for internal combustion engine of ammonia-powered ship |
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| CN114526178A true CN114526178A (en) | 2022-05-24 |
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| CN202210184700.5A Pending CN114526178A (en) | 2022-02-25 | 2022-02-25 | Fuel supply device for internal combustion engine of ammonia-powered ship |
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