CN110030086A - A kind of conventional submarine AIP system and working method - Google Patents
A kind of conventional submarine AIP system and working method Download PDFInfo
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- CN110030086A CN110030086A CN201910322881.1A CN201910322881A CN110030086A CN 110030086 A CN110030086 A CN 110030086A CN 201910322881 A CN201910322881 A CN 201910322881A CN 110030086 A CN110030086 A CN 110030086A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 74
- 238000001816 cooling Methods 0.000 claims abstract description 59
- 239000003345 natural gas Substances 0.000 claims abstract description 37
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000001301 oxygen Substances 0.000 claims abstract description 33
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003949 liquefied natural gas Substances 0.000 claims abstract description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 110
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 55
- 239000001569 carbon dioxide Substances 0.000 claims description 55
- 230000001172 regenerating effect Effects 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000008929 regeneration Effects 0.000 claims description 6
- 238000011069 regeneration method Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 4
- 239000011555 saturated liquid Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 3
- 238000010587 phase diagram Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/24—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being liquid at standard temperature and pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/30—Adding water, steam or other fluids for influencing combustion, e.g. to obtain cleaner exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/20—Adaptations of gas-turbine plants for driving vehicles
- F02C6/203—Adaptations of gas-turbine plants for driving vehicles the vehicles being waterborne vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/224—Heating fuel before feeding to the burner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0027—Oxides of carbon, e.g. CO2
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of conventional submarine AIP system and working method, the system include natural gas supply system, oxygen supply system and across the fluidised form power circulation system of CO 2 cross-critical；The invention also discloses the working methods of the system, liquefied natural gas and liquid oxygen pass through cryogenic pump pressurization respectively and enter cooling system releasing cooling capacity later and vaporize, then the suitable natural gas of temperature and pressure and oxygen, which enter, does oxygen-enriched combusting in combustion chamber, provide thermal energy for across the fluidised form power circulation system of CO 2 cross-critical；Steam turbine externally exports mechanical work when across the fluidised form power cycle of CO 2 cross-critical is run, and generator is driven to export electric energy；The present invention is increased using the liquefied natural gas that calorific value is big, density is small, storable fuel quantity；Efficiency far of the CO 2 cross-critical across fluidised form power circulation system is more than the existing dynamic system of heat energy under the conditions of, economical；Compared to existing AIP system, the present invention greatly improves the submerged endurance of submarine, reduces exposure, increases concealment.
Description
Technical Field
The invention relates to the field of power engineering, in particular to a novel conventional submarine AIP system and a working method thereof.
Background
After world war II, the nuclear power submarine can move underwater for a long time depending on atmosphere, and is developed rapidly, but the nuclear power technology is complex, the price is high, and the nuclear power submarine is limited by water discharge. The conventional submarine has certain advantages in certain tactical technologies, has small tonnage and good operability compared with a nuclear submarine, is more suitable for moving under offshore, shallow water, narrow sea areas and more complex weather conditions, and is flexible; the conventional submarine has low cost which is generally 1/5-1/3 of the cost of a nuclear submarine, and is about 1/2 of the nuclear submarine if calculated according to the tonnage; the construction period is shorter than that of a nuclear submarine, and the construction period is generally 2-3 years faster.
With the development of modern anti-submarine detection technology, especially the continuous improvement of detection technologies such as satellite, sonar and infrared, higher requirements are put forward on the performance indexes of the conventional submarine. The underwater submarine is required to have longer underwater cruising ability, and the time and times of sailing in the state of the vent pipe are reduced as much as possible, because the submarine is extremely easy to be attacked in the state of sailing the vent pipe; it is also desirable to reduce noise, and the structural noise of submarine power plants is one of the major sources of noise. Therefore, the exposure rate is reduced, the underwater cruising ability is improved, and the inevitable trend of further developing the conventional submarine in various countries is achieved.
The AIP system is an energy system which can provide power for the submarine under water without depending on outside air. Although the existing AIP system improves the underwater cruising power of a conventional submarine, the existing AIP system only can meet the requirement of the submarine for underwater low-speed sailing, and the total amount of energy carried by the existing AIP system is very limited. The conventional CCST-AIP system has the characteristics of low noise, high power and high working reliability, but the whole system is huge, a large number of auxiliary mechanical devices are provided, the system is difficult to install and arrange, a large cabin space is required, and the practicability is not strong; the heat efficiency is low, and the oxygen consumption per unit of electric energy is high; under the condition of certain underwater cruising power, the volume occupied by the fuel ethanol is larger; all system components need special design, the investment is large, and the economical efficiency is poor.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a novel conventional submarine AIP system and a working method thereof, and the invention adopts liquefied natural gas with large heat value and small density, so that the storable fuel quantity is increased; the efficiency of the carbon dioxide transcritical and fluid-state-crossing power cycle system far exceeds that of the existing heat energy power system under the same condition, and the economy is excellent; the rotary steam turbine is adopted, so that the noise is low, and particularly, the low-frequency noise is eliminated; the power is high, and the underwater navigation requirement of the submarine can be met; compared with the traditional CCST-AIP system, the equipment is more compact, the number is reduced by half, the investment is reduced, most of the equipment runs under low pressure, and the safety is improved; the carbon dioxide can be condensed and compressed into liquid at zero cost and stored in the submarine, so that the submarine can realize complete zero emission and the exposure rate is greatly reduced. In order to achieve the purpose, the invention adopts the following technical scheme:
a conventional submarine AIP system comprises a natural gas supply system, an oxygen supply system and a carbon dioxide transcritical cross-flow state power cycle system; wherein,
the natural gas supply system comprises a liquefied natural gas tank G, a natural gas supply low-temperature pump I, a cooling system D and a combustion chamber A which are sequentially communicated; the outlet of the liquefied natural gas tank G is communicated with the inlet of a natural gas supply low-temperature pump I, the outlet of the natural gas supply low-temperature pump I is communicated with the natural gas inlet of a cooling system D, and the natural gas outlet of the cooling system D is communicated with the natural gas inlet of the combustion chamber A;
the oxygen supply system comprises a liquid oxygen tank H, an oxygen supply low-temperature pump J, a cooling system D and a combustion chamber A which are sequentially communicated; the outlet of the liquid oxygen tank H is communicated with the inlet of an oxygen supply cryogenic pump J, the outlet of the oxygen supply cryogenic pump J is communicated with the liquid oxygen inlet of a cooling system D, and the oxygen outlet of the cooling system is communicated with the oxygen inlet of the combustion chamber A;
the carbon dioxide transcritical and fluidized power cycle system comprises a combustion chamber A, a steam turbine B, a heat regeneration system C, a cooling system D, a compressor E, a cryogenic pump F and a carbon dioxide storage tank K; the outlet of the combustion chamber A is connected with the inlet of a steam turbine B, the outlet of the steam turbine B is connected with the primary inlet of the heat release side of a heat-regenerating system C, the primary outlet of the heat release side of the heat-regenerating system C is connected with the primary inlet of the heat release side of a cooling system D, the primary outlet of the heat release side of the cooling system D is connected with the inlet of a compressor E, the outlet of the compressor E is connected with the secondary inlet of the heat release side of the heat-regenerating system C, the secondary outlet of the heat release side of the heat-regenerating system C is connected with the secondary inlet of the heat release side of the cooling system D, the secondary outlet of the heat release side of the cooling system D is connected with the inlet of a low-temperature pump F, the outlets of the low-temperature pump F are divided into two paths; the working medium used by the carbon dioxide transcritical and fluid-state-crossing power cycle system is carbon dioxide.
And the outlet pressure of the steam turbine B is 0.005-0.5 MPa.
The heat recovery system C comprises a plurality of heat exchangers.
The cooling system D comprises a plurality of low-temperature heat exchangers, and liquefied natural gas and liquid oxygen are used as cold sources.
And the temperature of a first-stage outlet at the heat release side of the cooling system D is not lower than the temperature corresponding to the outlet pressure of the steam turbine B on a gas-solid balance line in a carbon dioxide phase diagram.
And the outlet pressure of the compressor E is more than 0.6 MPa.
And the temperature of a secondary outlet at the heat release side of the cooling system D is equal to the saturation temperature of the carbon dioxide corresponding to the outlet pressure of the compressor E.
The outlet pressure of the cryopump F, the natural gas supply cryopump I, the oxygen supply cryopump J and the internal pressure of the combustion chamber A are 10-30 MPa.
And the steam turbine B adopts a rotary steam turbine.
In the working method of the conventional submarine AIP system, the liquefied natural gas stored in the liquefied natural gas tank G is pressurized by the low-temperature pump I supplied by natural gas, is released into cold energy in the cooling system D and is vaporized, and then enters the combustion chamber A; liquid oxygen stored in the liquid oxygen tank H is pressurized by a low-temperature pump J through oxygen supply, and then is released with cold energy and vaporized in a cooling system D and enters a combustion chamber A; the natural gas and the oxygen are combusted in a combustion chamber A filled with supercritical carbon dioxide, a mixture of the supercritical carbon dioxide and water with high temperature and high pressure is generated and then enters a steam turbine B to do work, wherein the carbon dioxide is changed into superheated gas, then the mixture releases heat in a regenerative system C at a constant pressure, the water in the mixture is condensed and then discharged, the carbon dioxide enters a cooling system D to release heat at the constant pressure, is compressed by a compressor E and enters the regenerative system C again to release heat at the constant pressure, then enters the cooling system D to release heat at the constant pressure until the mixture becomes saturated liquid carbon dioxide, then enters a low-temperature pump F to boost the pressure, one part of the carbon dioxide enters a carbon dioxide storage tank K, the other part of the carbon dioxide enters the regenerative system C to absorb heat at the constant.
Compared with the prior art, the invention has the following advantages:
1. the fuel quantity which can be stored is increased by adopting the liquefied natural gas with large heat value and small density;
2. the efficiency of the carbon dioxide transcritical and fluid-state-crossing power cycle system far exceeds that of the existing heat energy power system under the same condition, and the economy is excellent;
3. the rotary steam turbine is adopted, so that the noise is low, and particularly, the low-frequency noise is eliminated; the power is high, and the underwater navigation requirement of the submarine can be met;
4. compared with the traditional CCST-AIP system, the equipment is more compact, the number is reduced by half, and most of the equipment runs under low pressure, so that the safety is improved; the investment of carbon dioxide can be condensed and compressed into liquid with zero cost and stored in the submarine, so that the submarine can realize complete zero emission, and the exposure rate is greatly reduced
Drawings
FIG. 1 is a schematic diagram of a conventional submarine AIP system of the present invention.
FIG. 2 is a temperature entropy diagram of a carbon dioxide transcritical cross-flow state power cycle system in a conventional submarine AIP system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a conventional submarine AIP system comprises a natural gas supply system, an oxygen supply system and a carbon dioxide transcritical cross-flow state power cycle system; wherein,
the natural gas supply system comprises a liquefied natural gas tank G, a natural gas supply low-temperature pump I, a cooling system D and a combustion chamber A which are sequentially communicated; the outlet of the liquefied natural gas tank G is communicated with the inlet of a natural gas supply low-temperature pump I, the outlet of the natural gas supply low-temperature pump I is communicated with the natural gas inlet of a cooling system D, and the natural gas outlet of the cooling system D is communicated with the natural gas inlet of the combustion chamber A;
the oxygen supply system comprises a liquid oxygen tank H, an oxygen supply low-temperature pump J, a cooling system D and a combustion chamber A which are sequentially communicated; the outlet of the liquid oxygen tank H is communicated with the inlet of an oxygen supply cryogenic pump J, the outlet of the oxygen supply cryogenic pump J is communicated with the liquid oxygen inlet of a cooling system D, and the oxygen outlet of the cooling system is communicated with the oxygen inlet of the combustion chamber A;
the carbon dioxide transcritical and fluidized power cycle system comprises a combustion chamber A, a steam turbine B, a heat regeneration system C, a cooling system D, a compressor E, a cryogenic pump F and a carbon dioxide storage tank K; the outlet of the combustion chamber A is connected with the inlet of a steam turbine B, the outlet of the steam turbine B is connected with the primary inlet of the heat release side of a heat-regenerating system C, the primary outlet of the heat release side of the heat-regenerating system C is connected with the primary inlet of the heat release side of a cooling system D, the primary outlet of the heat release side of the cooling system D is connected with the inlet of a compressor E, the outlet of the compressor E is connected with the secondary inlet of the heat release side of the heat-regenerating system C, the secondary outlet of the heat release side of the heat-regenerating system C is connected with the secondary inlet of the heat release side of the cooling system D, the secondary outlet of the heat release side of the cooling system D is connected with the inlet of a low-temperature pump F, the outlets of the low-temperature pump F are divided into two paths, one; the working medium used by the carbon dioxide transcritical and fluid-state-crossing power cycle system is carbon dioxide.
As a preferred embodiment of the present invention, the natural gas and oxygen in the combustion chamber a are combusted in a supercritical carbon dioxide atmosphere.
In a preferred embodiment of the present invention, the outlet pressure of the steam turbine B is 0.005 to 0.5 MPa.
As a preferred embodiment of the present invention, the heat recovery system C comprises several heat exchangers.
As a preferred embodiment of the present invention, the cooling system D comprises several cryogenic heat exchangers.
In a preferred embodiment of the present invention, the temperature of the primary outlet on the heat release side of the cooling system D is not lower than the temperature corresponding to the outlet pressure of the steam turbine B on the gas-solid equilibrium line in the carbon dioxide phase diagram.
As a preferred embodiment of the present invention, the compressor E may adopt a multi-stage compression mode with inter-stage cooling.
As a preferred embodiment of the invention, the compressor E outlet pressure is greater than 0.6 MPa.
In a preferred embodiment of the present invention, the secondary outlet temperature on the heat release side of the cooling system D is equal to the saturation temperature of carbon dioxide corresponding to the outlet pressure of the compressor.
In a preferred embodiment of the present invention, the outlet pressure of the cryopump F, the natural gas supply cryopump I, the natural gas supply cryopump J, and the internal pressure of the combustion chamber are 10 to 30 MPa.
As shown in fig. 1, in the working method of the conventional submarine AIP system of the present invention, the liquefied natural gas stored in the liquefied natural gas tank G is pressurized by the natural gas supply cryopump I, and then released into the cooling system D and vaporized, and then enters the combustion chamber a; liquid oxygen stored in the liquid oxygen tank H is pressurized by a low-temperature pump J through oxygen supply, and then is released with cold energy and vaporized in a cooling system D and enters a combustion chamber A; the natural gas and the oxygen are combusted in a combustion chamber A filled with supercritical carbon dioxide, a mixture of the supercritical carbon dioxide and water with high temperature and high pressure is generated and then enters a steam turbine B to do work, wherein the carbon dioxide is changed into superheated gas, then the mixture releases heat in a regenerative system C at a constant pressure, the water in the mixture is condensed and then discharged to enter a water storage tank L, the carbon dioxide enters a cooling system D to release heat at the constant pressure, is compressed by a compressor E and enters the regenerative system C to release heat at the constant pressure again, then enters the cooling system D to release heat at the constant pressure until becoming saturated liquid carbon dioxide, enters a low-temperature pump F to be boosted, one part of the carbon dioxide enters a carbon dioxide storage tank K, the other part of the carbon dioxide absorbs heat at the constant pressure in the regenerative system C, and.
The temperature-entropy diagram of the carbon dioxide transcritical cross-flow state power cycle system in the conventional submarine AIP system is shown in figure 2, working media enter a steam turbine B to do work in the 1-2 process, the working media in the 2-3 process release heat in a regenerative system C at constant pressure, the working media in the 3-4 process release heat at constant pressure in a cooling system D, the working media in the 4-5 process boost pressure in a compressor E, the working media in the 5-6 process release heat at constant pressure in the regenerative system C, the working media in the 6-7 process release heat at constant pressure in the cooling system D until becoming saturated liquid, the working media in the 7-8 process are compressed at approximate isentropic in a low-temperature pump F, the working media in the 8-9 process are heated at constant pressure in the regenerative system C, and the working media in the 9-1 process are heated at constant pressure.
Claims (10)
1. A conventional submarine AIP system is characterized by comprising a natural gas supply system, an oxygen supply system and a carbon dioxide transcritical cross-flow state power cycle system; wherein,
the natural gas supply system comprises a liquefied natural gas tank (G), a natural gas supply cryogenic pump (I), a cooling system (D) and a combustion chamber (A) which are communicated in sequence; an outlet of the liquefied natural gas tank (G) is communicated with an inlet of a natural gas supply cryogenic pump (I), an outlet of the natural gas supply cryogenic pump (I) is communicated with a natural gas inlet of a cooling system (D), and a natural gas outlet of the cooling system (D) is communicated with a natural gas inlet of the combustion system (A);
the oxygen supply system comprises a liquid oxygen tank (H), an oxygen supply low-temperature pump (J), a cooling system (D) and a combustion chamber (A) which are communicated in sequence; the outlet of the liquid oxygen tank (H) is communicated with the inlet of an oxygen supply cryogenic pump (J), the outlet of the oxygen supply cryogenic pump (J) is communicated with the liquid oxygen inlet of a cooling system (D), and the oxygen outlet of the cooling system (D) is communicated with the oxygen inlet of the combustion chamber (A);
the carbon dioxide transcritical and trans-fluidized power cycle system comprises a combustion chamber (A), a steam turbine (B), a heat recovery system (C), a cooling system (D), a compressor (E), a cryogenic pump (F) and a carbon dioxide storage tank (K); the outlet of the combustion chamber (A) is connected with the inlet of a steam turbine (B), the outlet of the steam turbine (B) is connected with the primary inlet of the heat release side of a heat regeneration system (C), the primary outlet of the heat release side of the heat regeneration system (C) is connected with the primary inlet of the heat release side of a cooling system (D), the primary outlet of the heat release side of the cooling system (D) is connected with the inlet of a compressor (E), the outlet of the compressor (E) is connected with the secondary inlet of the heat release side of the heat regeneration system (C), the secondary outlet of the heat release side of the heat regeneration system (C) is connected with the secondary inlet of the heat release side of the cooling system (D), the secondary outlet of the heat release side of the cooling system (D) is connected with the inlet of a low-temperature pump (F), the outlet of the low-temperature pump (F) is divided into two paths, one path is connected with the inlet of a carbon dioxide storage tank (K), the; the working medium used by the carbon dioxide transcritical and fluid-state-crossing power cycle system is carbon dioxide.
2. The conventional submarine AIP system according to claim 1, wherein: and the outlet pressure of the steam turbine (B) is 0.005-0.5 MPa.
3. The conventional submarine AIP system according to claim 1, wherein: the heat recovery system (C) comprises a plurality of heat exchangers.
4. The conventional submarine AIP system according to claim 1, wherein: the cooling system (D) comprises a plurality of cryogenic heat exchangers.
5. The conventional submarine AIP system according to claim 1, wherein: and the temperature of the primary outlet of the heat release side of the cooling system (D) is not lower than the temperature corresponding to the outlet pressure of the steam turbine (B) on a gas-solid balance line in a carbon dioxide phase diagram.
6. The conventional submarine AIP system according to claim 1, wherein: the outlet pressure of the compressor (E) is more than 0.6 MPa.
7. The conventional submarine AIP system according to claim 1, wherein: and the temperature of the secondary outlet of the heat release side of the cooling system (D) is equal to the saturation temperature of the carbon dioxide corresponding to the outlet pressure of the compressor (E).
8. The conventional submarine AIP system according to claim 1, wherein: the outlet pressure of the cryogenic pump (F), the natural gas supply cryogenic pump (I), the oxygen supply cryogenic pump (J) and the internal pressure of the combustion chamber (A) are 10-30 MPa.
9. The conventional submarine AIP system according to claim 1, wherein: the steam turbine (B) adopts a rotary steam turbine.
10. The method of any one of claims 1 to 9, wherein the AIP system comprises: liquefied natural gas stored in a liquefied natural gas tank (G) is pressurized by a natural gas supply cryogenic pump (I), is released into cold energy in a cooling system (D) and is vaporized, and then enters a combustion chamber (A); liquid oxygen stored in the liquid oxygen tank (H) is pressurized by a cryogenic pump (J) through oxygen supply, and is released with cold energy and vaporized in a cooling system (D) and then enters a combustion chamber (A); the natural gas and the oxygen are combusted in a combustion chamber (A) filled with supercritical carbon dioxide, a mixture of the supercritical carbon dioxide and water with high temperature and high pressure is generated and then enters a steam turbine (B) to do work, wherein the carbon dioxide is changed into superheated gas, then the mixture releases heat in a regenerative system (C) at a constant pressure, the water in the mixture is condensed and then discharged, the carbon dioxide enters a cooling system (D) to release heat at the constant pressure, the carbon dioxide is compressed by a compressor (E) and enters the regenerative system (C) again to release heat at the constant pressure, then enters the cooling system (D) to release heat at the constant pressure until the mixture becomes saturated liquid carbon dioxide, the carbon dioxide enters a low-temperature pump (F) to be boosted, one part of the carbon dioxide enters a carbon dioxide storage tank (K), the other part of the carbon dioxide absorbs heat in the regenerative system (C) at the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910322881.1A CN110030086A (en) | 2019-04-22 | 2019-04-22 | A kind of conventional submarine AIP system and working method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910322881.1A CN110030086A (en) | 2019-04-22 | 2019-04-22 | A kind of conventional submarine AIP system and working method |
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| CN110030086A true CN110030086A (en) | 2019-07-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503956A (en) * | 2020-04-10 | 2020-08-07 | 江苏科技大学 | Comprehensive energy supply system in closed space and working method |
| CN112097288A (en) * | 2019-11-19 | 2020-12-18 | 中船重工（上海）新能源有限公司 | Fuel system suitable for closed cycle steam turbine |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097288A (en) * | 2019-11-19 | 2020-12-18 | 中船重工（上海）新能源有限公司 | Fuel system suitable for closed cycle steam turbine |
| CN111503956A (en) * | 2020-04-10 | 2020-08-07 | 江苏科技大学 | Comprehensive energy supply system in closed space and working method |
| CN111503956B (en) * | 2020-04-10 | 2021-08-31 | 江苏科技大学 | Comprehensive energy supply system in closed space and working method |
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