WO2020211471A1 - Cycle combiné de vapeur d'agent actif unique - Google Patents

Cycle combiné de vapeur d'agent actif unique Download PDF

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WO2020211471A1
WO2020211471A1 PCT/CN2020/000069 CN2020000069W WO2020211471A1 WO 2020211471 A1 WO2020211471 A1 WO 2020211471A1 CN 2020000069 W CN2020000069 W CN 2020000069W WO 2020211471 A1 WO2020211471 A1 WO 2020211471A1
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working fluid
kilogram
endothermic
exothermic
working
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PCT/CN2020/000069
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English (en)
Chinese (zh)
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李华玉
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李华玉
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Priority to US17/604,385 priority Critical patent/US20220290582A1/en
Publication of WO2020211471A1 publication Critical patent/WO2020211471A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K19/00—Regenerating or otherwise treating steam exhausted from steam engine plant
    • F01K19/02—Regenerating by compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K21/00—Steam engine plants not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit

Definitions

  • the invention belongs to the field of energy and power technology.
  • the heat source is high temperature and variable temperature heat source; when the Rankine cycle is used as the theoretical basis, water vapor is used as the circulating working fluid to achieve thermal variable work, due to the temperature and pressure resistance of the material And safety restrictions, no matter what parameters are used for operation, there is a large temperature difference between the circulating working fluid and the heat source, and the irreversible loss is large, resulting in low thermal efficiency.
  • thermal cycle is a heat energy utilization device
  • the present invention proposes a single working substance steam combination cycle.
  • the main purpose of the present invention is to provide a single working fluid steam combined cycle, and the specific content of the invention is described as follows:
  • the single working fluid steam combined cycle refers to the seven processes that are composed of M 1 kg and M 2 kg, which are carried out separately or jointly-M 1 kg working fluid boost process 12, M 1 kg working fluid absorption Thermal vaporization process 23, M 2 kg working fluid boosting process 63, M 3 kg working fluid endothermic process 34, M 3 kg working fluid depressurizing process 45, M 3 kg working fluid exothermic process 56, M 1 kg working fluid
  • Single working fluid steam combined cycle refers to the working fluids composed of M 1 kg and M 2 kg, which are carried out separately or together in eight processes-M 1 kg working fluid boost process 12, M 1 kg working fluid absorption Thermal vaporization process 23, M 1 kg working fluid depressurization process 35, M 2 kg working fluid boosting process 74, M 2 kg working fluid endothermic process 45, M 3 kg working fluid depressurizing process 56, M 3 kg working fluid
  • Single working fluid steam combined cycle refers to the working fluids composed of M 1 kg and M 2 kg, which are carried out separately or together in eight processes-M 1 kg working fluid boost process 12, M 1 kg working fluid absorption Thermal vaporization process 25, M 2 kg working fluid boosting process 73, M 2 kg working fluid endothermic process 34, M 2 kg working fluid depressurizing process 45, M 3 kg working fluid depressurizing process 56, M 3 kg working fluid
  • the exothermic process 67 the exothermic condensation process of M 1 kilogram of working fluid 71-the closed process of composition; where M 3 is the sum of M 1 and M 2 .
  • Single working fluid steam combined cycle refers to the nine processes that are composed of M 1 kg and M 2 kg, respectively or jointly-M 1 kg working fluid boost process 12, M 1 kg working fluid absorption Thermal vaporization process 23, M 1 kg working fluid depressurization process 37, M 2 kg working fluid boosting process 84, M 2 kg working fluid endothermic process 45, M 2 kg working fluid depressurizing process 56, M 2 kg working fluid
  • Single working fluid steam combined cycle refers to the nine processes that are composed of M 1 kg and M 2 kg, which are carried out separately or jointly-M 1 kg working fluid boost process 12, M 1 kg working fluid absorption Thermal vaporization process 23, M 1 kg working fluid depressurization process 34, M 1 kg working fluid heat release process 47, M 2 kg working fluid boosting process 85, M 2 kg working fluid endothermic process 56, M 2 kg working fluid Pressure reduction process 67, M 3 kg working fluid exothermic process 78, M 1 kg working fluid exothermic condensation process 81-a closed process of composition; where M 3 is the sum of M 1 and M 2 .
  • Single working fluid steam combined cycle refers to ten processes that are composed of M 1 kg and M 2 kg, which are carried out separately or jointly or partially-M 1 kg working fluid boost process 12, M 1 kg working fluid Endothermic vaporization process 23, M 2 kg refrigerant pressure increase process 83, M 3 kg refrigerant heat absorption process 34, X kg refrigerant depressurization process 47, (M 3 -X) kg refrigerant heat absorption process 45, (M 3 -X) kg working fluid depressurization process 56, (M 3 -X) kg working fluid heat release process 67, M 3 kg working fluid heat release process 78, M 1 kg working fluid heat release process 81—— The closing process of the composition; where M 3 is the sum of M 1 and M 2 .
  • Single working fluid steam combined cycle refers to ten processes that are composed of M 1 kg and M 2 kg, which are carried out separately or jointly or partly-M 1 kg working fluid boost process 12, M 1 kg working fluid Endothermic process 2b, (M 1 +M) kg working fluid endothermic vaporization process b3, M 2 kg working fluid boosting process 6a, M kg working fluid exothermic condensation process ab, (M 2 -M) kg working fluid Boosting process a3, M 3 kg working fluid endothermic process 34, M 3 kg working fluid depressurizing process 45, M 3 kg working fluid exothermic process 56, M 1 kg working fluid exothermic and condensation process 61-composition closure Process; where M 3 is the sum of M 1 and M 2 .
  • Single working fluid steam combined cycle refers to eleven processes that are composed of M 1 kg and M 2 kg, which are carried out separately or jointly or partially-M 1 kg working fluid boost process 12, M 1 kg Working fluid endothermic process 2b, (M 1 +M) kg working fluid endothermic vaporization process b3, (M 1 +M) kg working fluid depressurization process 35, M 2 kg working fluid boost process 7a, M kg working fluid Exothermic condensation process ab, (M 2 -M) kg working fluid boosting process a4, (M 2 -M) kg working fluid endothermic process 45, M 3 kg working fluid depressurizing process 56, M 3 kg working fluid release Thermal process 67, M 1 kg working fluid exothermic condensation process 71-a closed process of composition; where M 3 is the sum of M 1 and M 2 .
  • Single working fluid steam combined cycle refers to eleven processes that are composed of M 1 kg and M 2 kg, which are carried out separately or jointly or partially-M 1 kg working fluid boost process 12, M 1 kg Working fluid endothermic process 2b, (M 1 +M) kg working fluid endothermic vaporization process b5, M 2 kg working fluid boosting process 7a, M kg working fluid exothermic condensation process ab, (M 2 -M) kg working fluid Mass pressure increase process a3, (M 2 -M) kg working fluid endothermic process 34, (M 2 -M) kg working fluid pressure reduction process 45, M 3 kg working fluid pressure reduction process 56, M 3 kg working fluid release Thermal process 67, M 1 kg working fluid exothermic condensation process 71-a closed process of composition; where M 3 is the sum of M 1 and M 2 .
  • Single working fluid steam combined cycle refers to twelve processes that are composed of M 1 kg and M 2 kg, which are carried out separately or jointly or partially-M 1 kg working fluid boost process 12, M 1 kg Working fluid endothermic process 2b, (M 1 +M) kilogram working fluid endothermic vaporization process b3, (M 1 +M) kilogram working fluid pressure reduction process 37, M 2 kilogram working fluid pressure increase process 8a, M kilogram working fluid Exothermic condensation process ab, (M 2 -M) kg working fluid boosting process a4, (M 2 -M) kg working fluid endothermic process 45, (M 2 -M) kg working fluid depressurizing process 56, (M 2 -M) Kilogram working fluid exothermic process 67, M 3 kilogram working fluid exothermic process 78, M 1 kilogram working fluid exothermic condensation process 81-a closed process of composition; where M 3 is a combination of M 1 and M 2 with.
  • Single working fluid steam combined cycle refers to the working fluids composed of M 1 kg and M 2 kg, which are carried out separately or jointly or partially in twelve processes-M 1 kg working fluid boost process 12, M 1 kg Working fluid endothermic process 2b, (M 1 +M) kg working fluid endothermic vaporization process b3, (M 1 +M) kg working fluid depressurization process 34, (M 1 +M) kg working fluid exothermic process 47, M 2 kg working fluid boost process 8a, M kg working fluid exothermic condensation process ab, (M 2 -M) kg working fluid boost process a5, (M 2 -M) kg working fluid endothermic process 56, (M 2 -M) Kilogram working fluid depressurization process 67, M 3 kilogram working fluid exothermic process 78, M 1 kilogram working fluid exothermic condensation process 81-a closed process of composition; where M 3 is a combination of M 1 and M 2 with.
  • Single working fluid steam combined cycle refers to thirteen processes composed of M 1 kg and M 2 kg, which are carried out separately or jointly or partially-M 1 kg working fluid boost process 12, M 1 kg Working fluid endothermic process 2b, (M 1 +M) kg working fluid endothermic vaporization process b3, M 2 kg working fluid boosting process 8a, M kg working fluid exothermic condensation process ab, (M 2 -M) kg working fluid Mass pressure increase process a3, M 3 kg working fluid endothermic process 34, X kg working fluid pressure reduction process 47, (M 3 -X) kg working fluid endothermic process 45, (M 3 -X) kg working fluid pressure reduction Process 56, (M 3 -X) kilogram working fluid exothermic process 67, M 3 kilogram working fluid exothermic process 78, M 1 kilogram working fluid exothermic and condensation process 81—composition closed process; where M 3 is M The sum of 1 and M 2 .
  • Figure 1/12 is an example diagram of the first principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 2/12 is an example diagram of the second principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 3/12 is an example diagram of the third principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 4/12 is an example diagram of the fourth principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 5/12 is an example diagram of the fifth principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 6/12 is an example diagram of the sixth principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 7/12 is an example diagram of the seventh principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 8/12 is an example diagram of the eighth principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 9/12 is an example diagram of the ninth principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 10/12 is an example diagram of the tenth principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 11/12 is an example diagram of the eleventh principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • Figure 12/12 is an example diagram of the twelfth principle flow chart of the single working fluid steam combined cycle provided by the present invention.
  • M 3 is the sum of M 1 and M 2 ; And examples describe the present invention in detail.
  • M 1 kilogram working medium condensed liquid refrigerant boosting process 12 M 1 kilogram refrigerant absorbs heat heating, vaporization and superheating process 23, M 2 kilogram booster working fluid heating process 63, M 3 kilogram refrigerant absorbs heat Heating process 34, M 3 kg working fluid depressurization expansion process 45, M 3 kg working fluid exothermic cooling process 56, M 1 kg working fluid exothermic condensation process 61-a total of 7 processes.
  • M 1 kilogram booster working fluid 12 is generally accomplished by the process of the circulation pump
  • bootstrapping M 2 kilogram working fluid 63 is generally accomplished by a compressor
  • M 3 kilogram refrigerant expansion process buck 45 is generally completed by an expander; the expansion work is greater than the boosting work consumption, the thermal transformation is completed and the net work is provided to the outside, forming a single working substance steam combined cycle.
  • M 1 kilogram working medium condensed liquid refrigerant boosting process 12 M 1 kilogram refrigerant absorbs heat heating, vaporization and superheating process 23, M 1 kilogram buck refrigerant expansion process 35, M 2 kilogram working substance Boost Heating process 74, M 2 kg working fluid endothermic heating process 45, M 3 kg working fluid depressurization expansion process 56, M 3 kg working fluid exothermic cooling process 67, M 1 kg working fluid exothermic condensation process 71-total 8 processes.
  • M 1 kilogram booster working fluid 12 is generally accomplished by the process of the circulation pump, the booster during the working medium M 2 kilogram typically done by the compressor 74, M 1 kilogram of working fluid down the expansion process
  • the pressure-reducing expansion process of 35 and M 3 kilograms of working fluid 56 is generally completed by an expander; the expansion work is greater than the pressure boosting work, and the thermal conversion work is completed and the net work is provided to the outside to form a single working fluid steam combined cycle.
  • Working medium M 1 kg working fluid condensate boost process 12, M 1 kg working fluid endothermic heating, vaporization and overheating process 25, M 2 kg working fluid boosting and heating process 73, M 2 kg working fluid endothermic Heating process 34, M 2 kg working fluid depressurizing expansion process 45, M 3 kg working fluid depressurizing expansion process 56, M 3 kg working fluid exothermic cooling process 67, M 1 kg working fluid exothermic condensation process 71-total 8 processes.
  • M 1 kilogram booster working fluid 12 is generally accomplished by the process of the circulation pump, the booster during the working medium M 2 kilogram generally accomplished by the compressor 73, M 2 kilogram refrigerant expansion process buck
  • the pressure-reducing expansion process of 45 and M 3 kg working fluid 56 is generally completed by an expander; the expansion work is greater than the pressure boosting work, which completes the thermal conversion work and provides external net power to form a single working fluid steam combined cycle.
  • M 1 kilogram working medium condensed liquid refrigerant boosting process 12 M 1 kilogram refrigerant absorbs heat heating, vaporization and superheating process 23, M 1 kilogram buck refrigerant expansion process 37, M 2 kilogram working substance Boost Heating process 84, M 2 kg working fluid endothermic heating process 45, M 2 kg working fluid pressure-reducing expansion process 56, M 2 kg working fluid exothermic cooling process 67, M 3 kg working fluid exothermic cooling process 78, M 1 The exothermic condensation process of kilogram working fluid 81-a total of 9 processes.
  • the heat absorption in the high temperature section is generally provided by an external heat source; the heat absorption in the low temperature section is provided by an external heat source or M 2 kg
  • the working fluid is provided by the combined heat release (regeneration) of the 67 process and the M 3 kg working fluid of the 78 process, or provided by both.
  • M 1 kilogram booster working fluid 12 is generally accomplished by the process of the circulation pump
  • M 2 kilogram working fluid boosting is generally accomplished by a process of the compressor 84
  • the pressure reduction process 56 with M 2 kg of working fluid is generally completed by an expander; the expansion work is greater than the pressure boosting work, and the thermal conversion work is completed and the net work is provided to the outside to form a single working fluid steam combined cycle.
  • M 1 kilogram working medium condensed liquid refrigerant boosting process 12 M 1 kilogram refrigerant absorbs heat heating, vaporization and superheating process 23, M 1 kilogram buck refrigerant expansion process 34, M 1 kilogram refrigerant heat Cooling process 47, M 2 kg working fluid pressure rising process 85, M 2 kg working fluid endothermic heating process 56, M 2 kg working fluid depressurizing expansion process 67, M 3 kg working fluid exothermic cooling process 78, M 1 The exothermic condensation process of kilogram working fluid 81-a total of 9 processes.
  • the heat absorption in the high temperature section is generally provided by an external heat source; the heat absorption in the low temperature section is provided by an external heat source or M 1 kg
  • the working fluid is provided by the combined heat release (regeneration) of the 47 process and the M 3 kg working fluid of the 78 process, or provided by both.
  • M 1 kilogram booster working fluid 12 is generally accomplished by the process of the circulation pump
  • M 2 kilogram working fluid boosting is generally accomplished by a process of the compressor 85
  • the pressure reduction process 67 with M 2 kg of working fluid is generally completed by an expander; the expansion work is greater than the pressure boosting work, and the thermal conversion work is completed and the net work is provided externally to form a single working fluid steam combined cycle.
  • Working medium M 1 kg of working fluid condensate boost process 12, M 1 kg of working fluid endothermic heating, vaporization and overheating process 23, M 2 kg of working fluid boosting process of 83, M 3 kg of working fluid endothermic Heating process 34, X kg working fluid depressurizing expansion process 47, (M 3 -X) kg working fluid endothermic heating process 45, (M 3 -X) kg working fluid depressurizing expansion process 56, (M 3 -X) Kilogram working fluid exothermic cooling process 67, M 3 kg working fluid exothermic cooling process 78, M 1 kg working fluid exothermic and cooling process 81-a total of 10 processes.
  • M 1 kg booster working fluid 12 is generally accomplished by the process of the circulation pump
  • M 2 kg bootstrapping working fluid 83 is generally accomplished by a compressor
  • the pressure reduction process of the kilogram working fluid 56 is generally completed by an expander; the expansion work is greater than the pressure boosting power consumption, and the thermal conversion work is completed and the net work is provided externally to form a single working fluid steam combined cycle.
  • Working medium M 1 kg of working fluid condensate boost process 12, M 1 kg of working fluid mixed with M kg of superheated steam to endothermic heating process 2b, (M 1 +M) kg of working fluid endothermic heating, vaporization and overheating Process b3, M 2 kg working fluid pressure rising process 6a, M kg working fluid mixed with M 1 kg working fluid exothermic condensation process ab, (M 2 -M) kg working fluid pressure rising process a3, M 3 kg working fluid Endothermic heating process 34, M 3 kg working fluid depressurization expansion process 45, M 3 kg working fluid exothermic cooling process 56, M 1 kg working fluid exothermic condensation process 61-10 processes in total.
  • M 1 kg booster working fluid 12 is generally accomplished by the process of the circulation pump, M 2 kg of refrigerant bootstrapping 6a and (M 2 -M) kg of the working fluid by the general a3 bootstrapping Compressor to complete, M 3 kg of working fluid depressurization expansion process 45 is generally completed by the expander; the expansion work is greater than the boost power consumption, complete the thermal conversion work and provide external circulation net power, forming a single working fluid steam combined cycle .
  • the working medium is carried out-M 1 kg of working fluid condensate pressure increase process 12, M 1 kg of working fluid and M kg of working fluid mixed endothermic heating process 2b, (M 1 +M) kg of working fluid endothermic heating, vaporization and Overheating process b3, (M 1 +M) kg working fluid depressurization and cooling process 35, M 2 kg working fluid boosting and heating process 7a, M kg working fluid and M 1 kg working fluid mixed exothermic condensation process ab, (M 2 -M) Kilogram working fluid pressure rising process a4, (M 2 -M) Kilogram working fluid endothermic heating process 45, M 3 kg working fluid depressurizing expansion process 56, M 3 kg working fluid exothermic cooling process 67, M 1 kg working fluid exothermic condensation process 71-a total of 11 processes.
  • M 1 kg booster working fluid 12 is generally accomplished by the process of the circulation pump, M 2 kg of refrigerant 7a and bootstrapping (M 2 -M) kg of the working fluid by the general a4 bootstrapping Compressor to complete, (M 1 +M) the pressure-reducing expansion process 35 of the working fluid of (M 1 +M) and the pressure-reducing expansion process of the M 3 kilogram of working fluid 56 are generally completed by the expander; the expansion work is greater than the pressure boosting work, and the heat is completed.
  • Variable power and external cycle net power is provided to form a single working substance steam combined cycle.
  • the working medium is carried out-M 1 kg of working fluid condensate pressure increase process 12, M 1 kg of working fluid and M kg of working fluid mixed endothermic heating process 2b, (M 1 +M) kg of working fluid endothermic heating, vaporization and Overheating process b5, M 2 kg working fluid pressure rising process 7a, M kg working fluid and M 1 kg working fluid mixed exothermic condensation process ab, (M 2 -M) kg working fluid pressure rising process a3, (M 2 -M) kg working fluid endothermic heating process 34, (M 2 -M) kg working fluid depressurization expansion process 45, M 3 kg working fluid depressurization expansion process 56, M 3 kg working fluid exothermic cooling process 67, M 1 kg working fluid exothermic condensation process 71-a total of 11 processes.
  • M 1 kg booster working fluid 12 is generally accomplished by the process of the circulation pump, M 2 kg of refrigerant 7a and bootstrapping (M 2 -M) kg of the working fluid by the general a3 bootstrapping Compressor to complete, (M 2 -M) the pressure-reducing expansion process 45 of the working fluid of (M 2 -M) and the pressure-reducing expansion process of the M 3 kilogram of working fluid 56 are generally completed by the expander; the expansion work is greater than the pressure boosting work, and the heat is completed.
  • Variable power and external cycle net power is provided to form a single working substance steam combined cycle.
  • the working medium is carried out-M 1 kg of working fluid condensate pressure increase process 12, M 1 kg of working fluid and M kg of working fluid mixed endothermic heating process 2b, (M 1 +M) kg of working fluid endothermic heating, vaporization and Overheating process b3, (M 1 +M) kg working fluid depressurization expansion process 37, M 2 kg working fluid pressure rising process 8a, M kg working fluid and M 1 kg working fluid mixed exothermic condensation process ab, (M 2 -M) Kilogram working fluid pressure rising process a4, (M 2 -M) Kilogram working fluid endothermic temperature rising process 45, (M 2 -M) Kilogram working fluid pressure reducing expansion process 56, (M 2 -M) kg Working fluid exothermic cooling process 67, M 3 kg working fluid exothermic cooling process 78, M 1 kg working fluid exothermic condensation process 81-a total of 12 processes.
  • M 1 kg booster working fluid 12 is generally accomplished by the process of the circulation pump, M 2 kg of working fluid boosting process and 8a (M 2 -M) kg of the working fluid by the general a4 bootstrapping
  • the compressor is used to complete the pressure reduction process of (M 1 +M) kilogram working fluid 37 and the pressure reduction process of (M 2 -M) kilogram working fluid 56 are generally completed by the expander; the expansion work is greater than the pressure boosting work, Complete thermal power conversion and provide external cycle net power to form a single working fluid steam combined cycle.
  • the working medium is carried out-M 1 kg of working fluid condensate pressure increase process 12, M 1 kg of working fluid and M kg of working fluid mixed endothermic heating process 2b, (M 1 +M) kg of working fluid endothermic heating, vaporization and Overheating process b3, (M 1 +M) kg working fluid depressurization and expansion process 34, (M 1 +M) kg working fluid exothermic cooling process 47, M 2 kg working fluid boosting and heating process 8a, M kg working fluid and The mixed exothermic condensation process of M 1 kg of working fluid ab, (M 2 -M) pressure rise and temperature rise process of kg of working fluid a5, (M 2 -M) endothermic heating process of kilograms of working fluid 56, (M 2 -M) kg The pressure-reducing expansion process of the working fluid 67, the exothermic cooling process of M 3 kg of working fluid 78, the exothermic condensation process of M 1 kg of working fluid 81-a total of 12 processes.
  • M 1 kg booster working fluid 12 is generally accomplished by the process of the circulation pump, M 2 kg of working fluid boosting process and 8a (M 2 -M) kg of the working fluid by the general a5 bootstrapping
  • the compressor is used to complete the pressure reduction process of (M 1 +M) kilogram of working fluid 34 and the pressure reduction process of (M 2 -M) kilogram of working fluid 67 is generally completed by the expander; the expansion work is greater than the pressure boosting work, Complete thermal power conversion and provide external cycle net power to form a single working fluid steam combined cycle.
  • the working medium is carried out-M 1 kg of working fluid condensate pressure increase process 12, M 1 kg of working fluid and M kg of working fluid mixed endothermic heating process 2b, (M 1 +M) kg of working fluid endothermic heating, vaporization and Overheating process b3, M 2 kg working fluid boost process 8a, M kg working fluid and M 1 kg working fluid mixed exothermic condensation process ab, (M 2 -M) kg working fluid boosting and heating process a3, M 3 kg Working fluid endothermic heating process 34, X kilogram working fluid depressurization expansion process 47, (M 3 -X) kilogram working fluid endothermic heating process 45, (M 3 -X) kilogram working fluid depressurization expansion process 56, (M 3 -X) Kilogram working fluid exothermic cooling process 67, M 3 kg working fluid exothermic cooling process 78, M 1 kg working fluid exothermic cooling process 81-a total of 13 processes.
  • M 1 kg booster working fluid 12 is generally accomplished by the process of the circulation pump, M 2 kg of working fluid boosting process and 8a (M 2 -M) kg of the working fluid by the general a3 bootstrapping Compressor to complete, the pressure reduction process 47 of X kilogram working fluid and the pressure reduction process 56 of (M 3 -X) kilogram working fluid are generally completed by the expander; the expansion work is greater than the pressure boosting work, and the thermal conversion work is completed.
  • M 3 energy conversion process --M 1 kg booster working fluid 12 is generally accomplished by the process of the circulation pump, M 2 kg of working fluid boosting process and 8a (M 2 -M) kg of the working fluid by the general a3 bootstrapping Compressor to complete, the pressure reduction process 47 of X kilogram working fluid and the pressure reduction process 56 of (M 3 -X) kilogram working fluid are generally completed by the expander; the expansion work is greater than the pressure boosting work, and the thermal conversion work is completed.
  • a single working fluid is conducive to production and storage; reduces operating costs and improves the flexibility of cycle adjustment
  • the circulating medium and the heat source medium are both in the temperature change process, which is beneficial to reduce the temperature difference heat transfer loss in the heat absorption link and improve the thermal efficiency.
  • the low-pressure and high-temperature operation mode is adopted in the high-temperature zone to solve the difficult to reconcile contradictions between thermal efficiency, circulating medium parameters and pipe pressure and temperature resistance in traditional steam power plants.
  • low-pressure operation can be selected to provide theoretical support for improving the safety of device operation.
  • the working fluid has a wide application range, can well adapt to the energy supply demand, and the working fluid and working parameters are matched flexibly.
  • thermodynamic cycle range for realizing the utilization of temperature difference is expanded, which is beneficial to better realize the high-efficiency power utilization of high-temperature heat source and variable-temperature heat source.

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Abstract

L'invention concerne un cycle combiné de vapeur d'agent actif unique, impliquant un traitement fermé constitué de sept traitements effectués respectivement ou ensemble au moyen d'un agent actif pesant M1 kg et de l'agent actif pesant M2 kg, c'est-à-dire, un traitement d'élévation de pression (12) de l'agent actif pesant M1 kg, un traitement d'absorption de chaleur et de vaporisation (23) de l'agent actif pesant M1 kg, un traitement d'élévation de pression (63) de l'agent actif pesant M2 kg, un traitement d'absorption de chaleur (34) de l'agent actif pesant M3 kg, un traitement de réduction de pression (45) de l'agent actif pesant M3 kg, un traitement de dégagement de chaleur (56) de l'agent actif pesant M3 kg, et un traitement de dégagement de chaleur et de condensation (61) de l'agent actif pesant M1 kg, M3 étant la somme de M1 et de M2.
PCT/CN2020/000069 2019-04-15 2020-04-13 Cycle combiné de vapeur d'agent actif unique WO2020211471A1 (fr)

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US17/604,385 US20220290582A1 (en) 2019-04-15 2020-04-13 Single-working-medium vapor combined cycle

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CN201910331101 2019-04-15

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US20220290582A1 (en) 2022-09-15

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