CN115539827A - LNG (liquefied Natural gas) fuel cold energy recycling system of dual-fuel cruise ship - Google Patents
LNG (liquefied Natural gas) fuel cold energy recycling system of dual-fuel cruise ship Download PDFInfo
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- CN115539827A CN115539827A CN202211182473.9A CN202211182473A CN115539827A CN 115539827 A CN115539827 A CN 115539827A CN 202211182473 A CN202211182473 A CN 202211182473A CN 115539827 A CN115539827 A CN 115539827A
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- fuel
- lng
- water
- cold storage
- heat exchange
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- 239000000446 fuel Substances 0.000 title claims abstract description 75
- 238000004064 recycling Methods 0.000 title claims abstract description 29
- 239000003949 liquefied natural gas Substances 0.000 title abstract description 81
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 140
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000011084 recovery Methods 0.000 claims abstract description 28
- 239000006200 vaporizer Substances 0.000 claims abstract description 22
- 239000002828 fuel tank Substances 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052802 copper Inorganic materials 0.000 claims description 26
- 239000010949 copper Substances 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 239000006260 foam Substances 0.000 claims description 23
- 238000004321 preservation Methods 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 3
- 239000002937 thermal insulation foam Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 21
- 238000005057 refrigeration Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000002309 gasification Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 230000003020 moisturizing effect Effects 0.000 description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 12
- 235000017491 Bambusa tulda Nutrition 0.000 description 12
- 241001330002 Bambuseae Species 0.000 description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 12
- 239000011425 bamboo Substances 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010066057 cabin-1 Proteins 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
- F17C9/04—Recovery of thermal energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0367—Localisation of heat exchange
- F17C2227/0388—Localisation of heat exchange separate
- F17C2227/039—Localisation of heat exchange separate on the pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to the technical field of cold energy recycling of LNG (liquefied natural gas) fuel of cruise ships, and discloses an LNG cold energy recycling system of a dual-fuel cruise ship, which comprises the following components: the LNG fuel tank comprises an LNG fuel tank and a water glycol tank, wherein an LNG fuel supply pump is fixedly installed at the output end of the LNG fuel tank, an LNG vaporizer is fixedly installed at the output end of the LNG fuel supply pump, a first cold energy recovery heat exchanger is fixedly installed at the heat exchange output end of the LNG vaporizer, and a first water glycol circulating pump is fixedly installed at the circulating output end of the first cold energy recovery heat exchanger. The LNG fuel cold energy recycling system of the dual-fuel cruise ship can recycle a large amount of high-quality cold energy released in the gasification process before LNG supplies gas to users on the ship, avoids cold energy waste, is used for meeting the cold quantity requirements of refrigeration systems such as air conditioners on the cruise ship, improves the utilization rate of LNG fuel energy on the dual-fuel cruise ship, reduces the total fuel consumption, and meets the energy saving and emission reduction requirements of high-end manufacturing ships.
Description
Technical Field
The invention relates to the technical field of cold energy recycling of LNG (liquefied natural gas) fuels of cruise ships, in particular to an LNG fuel cold energy recycling system of a dual-fuel cruise ship.
Background
The cruise ship is provided with a dual-fuel host, a dual-fuel generator set and a dual-fuel steam boiler, liquefied Natural Gas (LNG) is used as power fuel during the whole journey navigation, and the LNG fuel is stored in an LNG fuel cabin at the ultralow temperature of-163 ℃.
When the main engine runs, LNG needs to be gasified and heated to the fuel gas with specific temperature and pressure and then is conveyed to the main engine, the generator or the boiler for gas supply, huge high-quality cold energy is released in the process, and the LNG can be used for refrigerating systems such as shipboard air conditioners and the like after being recycled, so that the requirement of the large cold energy in the running process of the mail steamer is met.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an LNG (liquefied natural gas) fuel cold energy recycling system of a dual-fuel cruise ship, which solves the problems mentioned in the background.
The invention provides the following technical scheme: LNG fuel cold energy recovery system of recycling of dual-fuel cruise ship includes: the LNG fuel tank comprises an LNG fuel tank and a water glycol tank, an LNG fuel supply pump is fixedly mounted at the output end of the LNG fuel tank, an LNG vaporizer is fixedly mounted at the output end of the LNG fuel supply pump, a first cold energy recovery heat exchanger is fixedly mounted at the heat exchange output end of the LNG vaporizer, a first water glycol circulating pump is fixedly mounted at the circulation output end of the first cold energy recovery heat exchanger, a cold storage pool is fixedly mounted at the output end of the first water glycol circulating pump, a second water glycol circulating pump is fixedly mounted at the first output end of the water glycol tank, a water glycol heat exchanger is fixedly mounted at the output end of the second water glycol circulating pump, a gas heater is fixedly mounted at the gas output end of the LNG vaporizer, a third water glycol circulating pump is fixedly mounted at the heat exchange output end of the cold storage pool, and a second cold energy recovery heat exchanger is fixedly mounted at the output end of the third water glycol circulating pump.
Preferably, the circulation output end of the cold storage pool is fixedly connected with the heat exchange input end of the LNG vaporizer, and the heat exchange input end of the cold storage pool is fixedly connected with the circulation output end of the second cold energy recovery heat exchanger.
Preferably, the circulation output end of the water glycol heat exchanger is fixedly connected with the heat exchange input end of the gas heater, and the first output end of the water glycol tank is located between the heat exchange output end of the gas heater and the input end of the second water glycol circulation pump.
Preferably, the cold storage pool includes end protecting crust, top protecting crust, first heat preservation foam, second heat preservation foam, cold storage storehouse and cold storage barn board, top protecting crust fixed connection is at the upper surface of end protecting crust, first heat preservation foam fixed mounting is in the inside of end protecting crust, second heat preservation foam fixed mounting is in the inside of top protecting crust, cold storage storehouse fixed mounting is in the inside of first heat preservation foam, cold storage barn board fixed connection is at the inner wall in cold storage storehouse.
Preferably, the cold-storage pond still includes reinforcing frame, reinforcing strip, installation copper, installation piece, opening, inflation buffer unit and mounting groove, reinforcing frame fixed connection is at the inner wall in cold-storage storehouse, reinforcing strip fixed connection is at the inner wall of reinforcing frame, installation copper fixed connection is at the inner wall of reinforcing strip, installation piece fixed connection is on the surface of installation copper, and the quantity of installation piece is a plurality of, the opening runs through the both sides of seting up at the installation copper, the mounting groove is embedded to be seted up in one side of installation copper, and the mounting groove is located the inside of opening.
Preferably, the expansion buffer unit comprises a supporting tube, a rubber pad, a blocking cylinder, a piston cylinder, a contact block, a piston, a spring and an air vent, wherein the supporting tube is fixedly connected to the inner wall of the flow hole, the surface of the supporting tube is penetrated through by the mounting hole, the rubber pad is fixedly connected to the inner wall of the mounting hole, the blocking cylinder is fixedly connected to the inner wall of the supporting tube, the piston cylinder is fixedly connected to the inner wall of the supporting tube, one end of the piston cylinder is movably connected to one end of the blocking cylinder, the contact block is fixedly connected to the inner wall of the piston cylinder, the piston is slidably connected to the inner wall of the piston cylinder, one end of the piston is movably connected to one end of the blocking cylinder, transmission liquid is arranged inside the supporting tube, the spring is slidably connected to the inner wall of the piston cylinder, one end of the spring is movably connected to one side of the contact block, the other end of the spring is movably connected to one side of the piston away from the blocking cylinder, and the air vent is penetrated through and arranged on two sides of the contact block.
Preferably, the cold storage pool further comprises a first heat exchange tube and a second heat exchange tube, the first heat exchange tube is fixedly arranged on one side of the installation copper plate, the second heat exchange tube is fixedly arranged on the other side of the installation copper plate, and the first heat exchange tube and the second heat exchange tube are fixedly arranged among the installation blocks.
Preferably, the cold-storage pond still includes moisturizing storehouse, inlet tube, apron, a section of thick bamboo of intaking and sump cover, moisturizing storehouse fixed mounting is in the inside of second heat preservation foam, and the interior diapire in moisturizing storehouse is provided with the inclined plane, and the moisturizing storehouse is located the top in cold-storage storehouse, advance water pipe integral type and connect in the bottom in moisturizing storehouse, and moisturizing storehouse is linked together through inlet tube and cold-storage storehouse, apron fixed connection is at the inner wall in moisturizing storehouse, a section of thick bamboo integral type of intaking is connected at the apron top, the sump cover is installed in the inside of a section of thick bamboo of intaking, and the inside in moisturizing storehouse with the inside in cold-storage storehouse all is provided with the pure water.
Preferably, the inner wall of a section of thick bamboo of intaking is provided with the internal thread, the outer wall of sump cover is provided with the external screw thread, and the section of thick bamboo of intaking passes through internal thread and external screw thread and sump cover threaded connection, and the inner wall integral type of a section of thick bamboo of intaking is provided with the fender ring, and keeps off and fix between ring and the sump cover and be provided with the sealing washer, and the surface of sealing washer and the fixed surface who keeps off the ring are connected, and the embedded groove of holding of having seted up in top of sump cover, and the inner wall integral type that holds the groove is connected with the torsion plate.
Preferably, one end of the first heat exchange tube is a circulation input end of the cold storage pool, the other end of the first heat exchange tube is a circulation output end of the cold storage pool, one end of the second heat exchange tube is a heat exchange input end of the cold storage pool, and the other end of the second heat exchange tube is a heat exchange output end of the cold storage pool.
Compared with the prior art, the invention has the following beneficial effects:
1. the LNG fuel cold energy recycling system of the dual-fuel cruise ship comprises an LNG fuel cabin, a water glycol tank, an LNG fuel supply pump, an LNG vaporizer, a first cold energy recycling heat exchanger, a first water glycol circulating pump, a cold storage pool, a second water glycol circulating pump, a water glycol heat exchanger, a gas heater, a third water glycol circulating pump and a second cold energy recycling heat exchanger, wherein the first water glycol circulating pump, the second water glycol circulating pump, the third water glycol circulating pump and the second cold energy recycling heat exchanger are arranged on the LNG fuel cabin.
2. The LNG cold energy recycling system of the dual-fuel mail carrier comprises a protective shell, a top protective shell, first heat-insulating foam, second heat-insulating foam, a cold storage bin plate, a reinforcing frame, a reinforcing strip, a mounting copper plate, a mounting block, a first heat exchange tube, a second heat exchange tube, a circulation hole, a supporting tube, a rubber pad, a blocking cylinder, a piston cylinder, a touch block, a piston, a spring, an air vent, a water replenishing bin, a water inlet tube, a cover plate, a water inlet tube, a water bin cover, an expansion buffer unit and a mounting groove, so that when the high working load is high, the cold energy recycling system can fully recycle and store redundant cold energy, and when a low-load or LNG gas supply system does not operate, the cold energy recycling system can provide cold energy requirements for refrigeration systems such as air conditioners on the mail carrier.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of a cold storage pool according to the present invention;
FIG. 3 is a side sectional view of the cold storage tank of the present invention;
fig. 4 is a schematic diagram of an explosion structure of a cold storage pool according to the invention;
FIG. 5 is a schematic view of the construction of the mounting copper plate of the present invention;
FIG. 6 is a schematic view of the external explosion structure of the installation copper plate of the present invention;
FIG. 7 is a side cross-sectional view of a support tube of the present invention;
fig. 8 is a schematic view of the inner explosion structure of the support tube according to the present invention.
In the figure: 1. an LNG bunker; 2. a water glycol tank; 3. an LNG fuel supply pump; 4. an LNG vaporizer; 5. a first cold energy recovery heat exchanger; 6. a first water glycol circulation pump; 7. a cold storage tank; 701. a protective shell; 702. a top protective shell; 703. a first insulating foam; 704. a second insulating foam; 705. a cold storage bin; 706. a cold accumulation chamber plate; 707. reinforcing the frame; 708. reinforcing the strips; 709. mounting a copper plate; 710. mounting a block; 711. a first heat exchange tube; 712. a second heat exchange tube; 713. a flow-through hole; 71401. supporting a pipe; 71402. a rubber pad; 71403. a blocking cylinder; 71404. a piston cylinder; 71405. a contact block; 71406. a piston; 71407. a spring; 71408. a vent hole; 715. a water replenishing bin; 716. a water inlet pipe; 717. a cover plate; 718. a water inlet cylinder; 719. a water bin cover; 720. mounting grooves; 8. a second water glycol circulation pump; 9. a water glycol heat exchanger; 10. a gas heater; 11. a third water glycol circulation pump; 12. and the second cold energy recovery heat exchanger.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the LNG fuel cold energy recycling system for a dual-fuel cruise ship includes: the LNG fuel tank 1 and the water glycol tank 2, the LNG fuel supply pump 3 is fixedly installed at the output end of the LNG fuel tank 1, the LNG vaporizer 4 is fixedly installed at the output end of the LNG fuel supply pump 3, the first cold energy recovery heat exchanger 5 is fixedly installed at the heat exchange output end of the LNG vaporizer 4, the first water glycol circulation pump 6 is fixedly installed at the circulation output end of the first cold energy recovery heat exchanger 5, the cold storage tank 7 is fixedly installed at the output end of the first water glycol circulation pump 6, the second water glycol circulation pump 8 is fixedly installed at the first output end of the water glycol tank 2, the water glycol heat exchanger 9 is fixedly installed at the output end of the second water glycol circulation pump 8, the gas heater 10 is fixedly installed at the gas output end of the LNG vaporizer 4, the third water glycol circulation pump 11 is fixedly installed at the heat exchange output end of the cold storage tank 7, the second cold energy recovery heat exchanger 12 is fixedly installed at the output end of the third water glycol circulation pump 11, the LNG fuel tank 2, the LNG fuel supply pump 3, the LNG vaporizer 4, the first cold energy recovery heat exchanger 5, the first water glycol circulation pump 6, the cold storage tank 7, the second water glycol circulation pump 8, the water glycol circulation pump 9, the LNG fuel tank 9, the LNG fuel heater can reduce the energy recovery heat exchanger, the energy consumption of a large amount of LNG fuel tank 11, and the energy recovery heat exchanger, and reduce the energy of LNG fuel recovery heat exchanger, and reduce the energy consumption of LNG fuel consumption of LNG carrier, and meet the high-grade fuel energy of LNG carrier, and meet the requirement of a large-saving requirement of a high-energy recovery heat exchanger, and the energy recovery heat exchanger, and reduce the energy of a high-saving requirement of a high-saving system, and reduce the energy recovery heat exchanger, and reduce the energy of an LNG carrier.
Wherein; the circulation output end of the cold storage pool 7 is fixedly connected with the heat exchange input end of the LNG vaporizer 4, and the heat exchange input end of the cold storage pool 7 is fixedly connected with the circulation output end of the second cold energy recovery heat exchanger 12, so that the water glycol flows back when the LNG vaporizer 4 performs refrigeration circulation.
Wherein; the circulation output end of the water glycol heat exchanger 9 is fixedly connected with the heat exchange input end of the gas heater 10, and the first output end of the water glycol tank 2 is located between the heat exchange output end of the gas heater 10 and the input end of the second water glycol circulation pump 8, so that water glycol backflow during heating circulation of the water glycol heat exchanger 9 is facilitated.
Wherein; the cold storage pool 7 comprises a bottom protective shell 701, a top protective shell 702, first heat preservation foam 703, second heat preservation foam 704, a cold storage bin 705 and a cold storage bin plate 706, the top protective shell 702 is fixedly connected to the upper surface of the bottom protective shell 701, the first heat preservation foam 703 is fixedly installed in the bottom protective shell 701, the second heat preservation foam 704 is fixedly installed in the top protective shell 702, the cold storage bin 705 is fixedly installed in the first heat preservation foam 703, and the cold storage bin plate 706 is fixedly connected to the inner wall of the cold storage bin 705, so that heat preservation and protection are facilitated.
Wherein; the cold storage pool 7 further comprises a reinforcing frame 707, reinforcing strips 708, mounting copper plates 709, mounting blocks 710, flow holes 713, expansion buffer units and mounting grooves 720, the reinforcing frame 707 is fixedly connected to the inner wall of the cold storage pool 705, the reinforcing strips 708 are fixedly connected to the inner wall of the reinforcing frame 707, the mounting copper plates 709 are fixedly connected to the inner wall of the reinforcing strips 708, the mounting blocks 710 are fixedly connected to the surface of the mounting copper plates 709, the mounting blocks 710 are multiple in number, the flow holes 713 penetrate through the two sides of the mounting copper plates 709, the mounting grooves 720 are embedded in one side of the mounting copper plates 709, and the mounting grooves 720 are located inside the flow holes 713 so as to mount and fix the first heat exchange tubes 711 and the second heat exchange tubes 712.
Wherein; the expansion buffer unit comprises a support tube 71401, a rubber pad 71402, a retaining cylinder 71403, a piston cylinder 71404, a collision block 71405, a piston 71406, a spring 71407 and a vent 71408, the support tube 71401 is fixedly connected with the inner wall of the circulation hole 713, and the surface of the supporting tube 71401 is provided with a mounting opening in a penetrating way, the rubber pad 71402 is fixedly connected with the inner wall of the mounting opening, the retaining cylinder 71403 is fixedly connected with the inner wall of the supporting tube 71401, the piston cylinder 71404 is fixedly connected with the inner wall of the supporting tube 71401, one end of the piston cylinder 71404 is movably connected with one end of the retaining cylinder 71403, the abutting block 71405 is fixedly connected with the inner wall of the piston cylinder 71404, the piston 71406 is connected with the inner wall of the piston cylinder 71404 in a sliding way, one end of the piston 71406 is movably connected with one end of the retaining cylinder 71403, transmission fluid is arranged inside the supporting tube 71401, the spring 71407 is connected with the inner wall of the piston cylinder 71404 in a sliding way, one end of the spring 71407 is movably connected with one side of the abutting block 71405, the other end of the spring 71407 is movably connected with one side of the piston 71406 far away from the retaining cylinder 71403, the vent holes 71408 are arranged on two sides of the abutting block 71405 in a penetrating way, through the arrangement of the protective shell 701, the top protective shell 702, the first heat-insulating foam 703, the second heat-insulating foam 704, the cold accumulation bin 705, the cold accumulation bin plate 706, the reinforcing frame 707, the reinforcing strip 708, the mounting copper plate 709, the mounting block 710, the first heat exchange tube 711, the second heat exchange tube 712, the circulation hole 713, the support tube 71401, the rubber gasket 71402, the retaining tube 71403, the piston tube 71404, the abutting block 71405, the piston 71406, the spring 71407, the vent 71408, the water replenishing bin 715, the water inlet tube 716, the cover plate 717, the water inlet tube 718, the water bin cover 719, the expansion buffer unit and the mounting groove 720, when the working load is high, the cold energy recycling system can fully recycle and store redundant cold energy, and provides cold energy requirements for refrigeration systems such as air conditioners on the cruise ship when a low-load or LNG gas supply system does not operate.
Wherein; the cold storage pool 7 further comprises a first heat exchange pipe 711 and a second heat exchange pipe 712, the first heat exchange pipe 711 is fixedly installed at one side of the installation copper plate 709, the second heat exchange pipe 712 is fixedly installed at the other side of the installation copper plate 709, and the first heat exchange pipe 711 and the second heat exchange pipe 712 are both fixedly arranged among the installation blocks 710 so as to exchange heat.
Wherein; cold-storage pond 7 still includes moisturizing storehouse 715, inlet tube 716, the apron 717, intake section of thick bamboo 718 and sump cover 719, moisturizing storehouse 715 fixed mounting is in the inside of second heat preservation foam 704, and the interior diapire in moisturizing storehouse 715 is provided with the inclined plane, and moisturizing storehouse 715 is located the top in cold-storage storehouse 705, the bottom in moisturizing storehouse 715 is connected to inlet tube 716 integral type, and moisturizing storehouse 715 is linked together through inlet tube 716 and cold-storage storehouse 705, apron 717 fixed connection is at the inner wall in moisturizing storehouse 715, intake section of thick bamboo 718 integral type is connected at the apron 717 top, sump cover 719 is installed in the inside of intaking section of thick bamboo 718, and the inside in moisturizing storehouse 715 and the inside in cold-storage storehouse 705 all are provided with the pure water, so that cold volume is stored.
Wherein; the inner wall of a section of thick bamboo 718 of intaking is provided with the internal thread, the outer wall of sump cover 719 is provided with the external screw thread, and a section of thick bamboo 718 of intaking passes through internal thread and external screw thread and sump cover 719 threaded connection, and the inner wall integral type of a section of thick bamboo 718 of intaking is provided with the fender ring, and keep off the fixed sealing washer that is provided with between ring and the sump cover 719, and the surface of sealing washer and the fixed surface who keeps off the ring are connected, and the embedded groove of holding of having seted up in top of sump cover 719, and the inner wall integral type that holds the groove is connected with the twist board, so that the replenishment holds cold water.
Wherein; one end of the first heat exchange tube 711 is a circulation input end of the cold storage pool 7, the other end of the first heat exchange tube 711 is a circulation output end of the cold storage pool 7, one end of the second heat exchange tube 712 is a heat exchange input end of the cold storage pool 7, and the other end of the second heat exchange tube 712 is a heat exchange output end of the cold storage pool 7, so that the cold storage pool 7 is incorporated into the system.
The working principle is that when in use, LNG fuel stored in an LNG fuel cabin 1 is conveyed out through an LNG fuel supply pump 3, then the LNG fuel is heated and pressurized through an LNG vaporizer 4 and a gas heater 10 to provide gas with required working pressure and temperature for a follow-up on-board user dual-fuel host, a dual-fuel generator or a dual-fuel boiler, water-based glycol with low freezing point is used as a heat transfer medium and stored in a water glycol tank 2, the water-based glycol passes through a second water glycol circulating pump 8 from a first output end, passes through a water glycol heat exchanger 9 and the gas heater 10, and finally flows back to the second water glycol circulating pump 8 from the gas heater 10 to form circulation, gasified gas is heated, the water-based glycol passes through a first water glycol circulating pump 6 from a second output end, passes through a cold storage tank 7, the LNG vaporizer 4 and a first cold energy recovery heat exchanger 5, finally, the cold energy formed by the gasification of the LNG gasifier 4 is transmitted to the first cold energy recovery heat exchanger 5 and passes through a cold storage pool 7, the first cold energy recovery heat exchanger 5 directly supplies cold to an onboard air-conditioning coolant water system, the cold storage pool 7 stores energy, when the dual-fuel postman LNG gas supply system works under high load, the requirement of the air-conditioning coolant water system is met, the redundant cold energy freezes the water in the cold storage pool 7 through the heat exchanger in the cold storage pool 7, so that the cold energy is stored in the cold storage pool 7, the cold storage pool 7 is connected with the second cold energy recovery heat exchanger 12, when the dual-fuel postman LNG gas supply system works under low load or does not work, enough cold energy cannot be provided through the cold storage gasifier 4, the second cold energy recovery heat exchanger 12 absorbs the cold energy stored in the cold storage pool 7 and supplies the cold energy to the onboard air-conditioning coolant water system, when the cold storage tank 7 is used, the first water glycol circulating pump 6 pumps the excessive refrigerating capacity of the LNG vaporizer 4 refrigerating the first cold energy recovery heat exchanger 5 into the cold storage tank 7 by taking the water glycol released by the water glycol heat exchanger 9 as a medium, the cooled water glycol enters from one end of the first heat exchange pipe 711 and flows inside the first heat exchange pipe 711, purified water inside the cold storage bin 705 is cooled and frozen through the heat conduction of the first heat exchange pipe 711, the first heat insulation foam 703 and the second heat insulation foam 704 are used for isolating and insulating so as to store cold energy, the water glycol after heat exchange is output from the other end of the first heat exchange pipe 711, certain expansion is generated when the purified water inside the cold storage bin 705 is frozen, and the expanded ice water mixture extrudes the space inside the cold storage tank 7 so as to extrude the surface of the rubber pad 71402, rubber pad 71402 is by inside extrusion to supporting tube 71401, thereby increased cold-storage pool 7 inner space, avoid cold-storage pool 7 to receive the inflation damage, can extrude transmission fluid when rubber pad 71402 is by inside extrusion to supporting tube 71401, thereby promote the slip of piston 71406, spring 71407 shrink, when LNG vaporizer 4 is out of work, the inside ice-cube of cold-storage pool 7 melts into water and heat absorption release cold volume, thereby with temperature reduction around the second heat exchange tube 712, thereby carry second cold energy recovery heat exchanger 12 with cold volume through the circulation of second heat exchange tube 712, and then supply cold to on-board air conditioner refrigerant water system, and simultaneously, the inside ice-cube of cold-storage pool 7 melts, the volume reduces, to the pressure reduction of rubber pad 71402, spring 71407 extends and promotes piston 71406 and resets, piston 71406 extrudes transmission fluid and promotes the expansion of rubber pad 71402.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. LNG fuel cold energy recovery system of recycling of dual-fuel cruise ship, its characterized in that includes: LNG fuel tank (1) and water glycol jar (2), the output fixed mounting of LNG fuel tank (1) has LNG fuel supply pump (3), the output fixed mounting of LNG fuel supply pump (3) has LNG vaporizer (4), the heat transfer output fixed mounting of LNG vaporizer (4) has first cold energy recuperation heat exchanger (5), the circulation output fixed mounting of first cold energy recuperation heat exchanger (5) has first water glycol circulating pump (6), the output fixed mounting of first water glycol circulating pump (6) has cold storage pond (7), the first output fixed mounting of water glycol jar (2) has second water glycol circulating pump (8), the output fixed mounting of second water glycol circulating pump (8) has water glycol heat exchanger (9), the gas output fixed mounting of LNG vaporizer (4) has gas heater (10), the heat transfer output fixed mounting of cold storage pond (7) has third water glycol circulating pump (11), the output fixed mounting of third water glycol circulating pump (11) has second cold energy recuperation heat exchanger (12).
2. The LNG fuel cold energy recycling system of the dual-fuel cruise ship according to claim 1, wherein the circulation output end of the cold storage tank (7) is fixedly connected with the heat exchange input end of the LNG vaporizer (4), and the heat exchange input end of the cold storage tank (7) is fixedly connected with the circulation output end of the second cold energy recycling heat exchanger (12).
3. The LNG fuel cold energy recycling system of the dual-fuel cruise ship according to claim 1, characterized in that the circulation output end of the water glycol heat exchanger (9) is fixedly connected with the heat exchange input end of the gas heater (10), and the first output end of the water glycol tank (2) is located between the heat exchange output end of the gas heater (10) and the input end of the second water glycol circulation pump (8).
4. The LNG fuel cold energy recycling system for the dual-fuel mail carrier of claim 1, wherein the cold storage tank (7) comprises a bottom protective shell (701), a top protective shell (702), a first heat preservation foam (703), a second heat preservation foam (704), a cold storage bin (705) and a cold storage bin plate (706), the top protective shell (702) is fixedly connected to the upper surface of the bottom protective shell (701), the first heat preservation foam (703) is fixedly installed inside the bottom protective shell (701), the second heat preservation foam (704) is fixedly installed inside the top protective shell (702), the cold storage bin (705) is fixedly installed inside the first heat preservation foam (703), and the cold storage bin plate (706) is fixedly connected to the inner wall of the cold storage bin (705).
5. The LNG fuel cold energy recycling system of the dual-fuel mail steamer of claim 4, characterized in that the cold storage tank (7) further comprises a reinforcing frame (707), a reinforcing bar (708), an installation copper plate (709), an installation block (710), a circulation hole (713), an expansion buffer unit and an installation groove (720), the reinforcing frame (707) is fixedly connected to the inner wall of the cold storage bin (705), the reinforcing bar (708) is fixedly connected to the inner wall of the reinforcing frame (707), the installation copper plate (709) is fixedly connected to the inner wall of the reinforcing bar (708), the installation block (710) is fixedly connected to the surface of the installation copper plate (709), the number of the installation blocks (710) is multiple, the circulation hole (713) is arranged on two sides of the installation copper plate (709) in a penetrating manner, the installation groove (720) is arranged on one side of the installation copper plate (709) in an embedded manner, and the installation groove (720) is located inside the circulation hole (713).
6. The LNG fuel cold energy recycling system of the dual-fuel mail steamer of claim 5, wherein the expansion buffer unit comprises a support tube (71401), a rubber pad (71402), a baffle cylinder (71403), a piston cylinder (71404), an abutting block (71405), a piston (71406), a spring (71407) and a vent hole (71408), the support tube (71401) is fixedly connected to the inner wall of the circulation hole (713), the surface of the support tube (71401) is provided with a mounting hole, the rubber pad (71402) is fixedly connected to the inner wall of the mounting hole, the baffle cylinder (71403) is fixedly connected to the inner wall of the support tube (71401), the piston cylinder (71404) is fixedly connected to the inner wall of the support tube (71401), one end of the piston cylinder (71404) is movably connected to one end of the baffle cylinder (71403), the abutting block (71405) is fixedly connected to the inner wall of the piston cylinder (71404), the piston (71406) is slidably connected to the inner wall of the piston cylinder (404), one end of the piston cylinder (71403) is movably connected to one end of the baffle cylinder (71403), the spring (407) is movably connected to one side of the piston cylinder (71405), and the spring (407) is provided with the inner wall of the baffle cylinder (71408), and the spring (407) is provided with the spring (71406) and the spring (71405), the vent holes (71408) penetrate through two sides of the contact block (71405).
7. The LNG fuel cold energy recycling system of the dual-fuel cruise ship according to claim 5, wherein the cold storage pool (7) further comprises a first heat exchange pipe (711) and a second heat exchange pipe (712), the first heat exchange pipe (711) is fixedly installed at one side of the installation copper plate (709), the second heat exchange pipe (712) is fixedly installed at the other side of the installation copper plate (709), and the first heat exchange pipe (711) and the second heat exchange pipe (712) are both fixedly arranged among the installation blocks (710).
8. The LNG fuel cold energy recycling system of the dual-fuel mail steamer of claim 4, characterized in that the cold storage tank (7) further comprises a water replenishing bin (715), a water inlet pipe (716), a cover plate (717), a water inlet cylinder (718) and a water bin cover (719), the water replenishing bin (715) is fixedly installed inside the second heat insulation foam (704), an inner bottom wall of the water replenishing bin (715) is provided with an inclined surface, the water replenishing bin (715) is located above the cold storage bin (705), the water inlet pipe (716) is integrally connected to the bottom of the water replenishing bin (715), the water replenishing bin (715) is communicated with the cold storage bin (705) through the water inlet pipe (716), the cover plate (717) is fixedly connected to the inner wall of the water replenishing bin (715), the water inlet cylinder (718) is integrally connected to the top of the cover plate (717), the water bin cover (719) is installed inside the water inlet cylinder (718), and purified water is arranged inside the cold storage bin (705).
9. The LNG fuel cold energy recycling system of the dual-fuel mail steamer of claim 8, characterized in that the inner wall of the water inlet cylinder (718) is provided with internal threads, the outer wall of the water bin cover (719) is provided with external threads, the water inlet cylinder (718) is in threaded connection with the water bin cover (719) through the internal threads and the external threads, the inner wall of the water inlet cylinder (718) is integrally provided with a baffle ring, a sealing ring is fixedly arranged between the baffle ring and the water bin cover (719), the surface of the sealing ring is fixedly connected with the surface of the baffle ring, a holding groove is formed in an embedded type of the top of the water bin cover (719), and the inner wall of the holding groove is integrally connected with a torsion plate.
10. The LNG fuel cold energy recycling system for the dual-fuel mail train of claim 7, wherein one end of the first heat exchange pipe (711) is a circulation input end of the cold storage tank (7), the other end of the first heat exchange pipe (711) is a circulation output end of the cold storage tank (7), one end of the second heat exchange pipe (712) is a heat exchange input end of the cold storage tank (7), and the other end of the second heat exchange pipe (712) is a heat exchange output end of the cold storage tank (7).
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