CN112302745B - Green heat pump refrigerating and heating device applied to turbine work - Google Patents
Green heat pump refrigerating and heating device applied to turbine work Download PDFInfo
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- CN112302745B CN112302745B CN202011087446.4A CN202011087446A CN112302745B CN 112302745 B CN112302745 B CN 112302745B CN 202011087446 A CN202011087446 A CN 202011087446A CN 112302745 B CN112302745 B CN 112302745B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 202
- 239000003507 refrigerant Substances 0.000 claims abstract description 45
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- 239000013535 sea water Substances 0.000 claims abstract description 9
- 239000008236 heating water Substances 0.000 claims description 30
- 238000010792 warming Methods 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000010865 sewage Substances 0.000 claims description 7
- 239000008399 tap water Substances 0.000 claims description 5
- 235000020679 tap water Nutrition 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000010612 desalination reaction Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 239000000498 cooling water Substances 0.000 abstract description 4
- 239000013505 freshwater Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 12
- 230000005494 condensation Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000009189 diving Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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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
- 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
- F01K7/34—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 the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/38—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 the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of turbine type
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
Abstract
The invention discloses a green heat pump refrigerating and heating device, which is applied to the work of a steam turbine, and the technical scheme of the invention comprises three systems: a refrigeration system 1, a turbine system 3a and a heating system 2. Wherein the refrigeration system 1 comprises: the full phase change heat exchanger 3, the refrigerant water tank 6, the refrigerant water pump 7 and the outlet of the refrigerant water pump 7 are communicated with the inlet of the sprayer, the inlet of the pump 7 is communicated with the outlet of the refrigerant water tank 6, one inlet of the water tank 6 is communicated with the outlet of the lower part of the shell, and the outlet of the heat exchange tube at the right lower part of the shell is communicated with the other inlet of the water tank 6. Wherein the heating system 2 comprises: the upper shell outlet of the first-grade green heat pump 8, the water supply pump 9, the water supply tank 10 and the heat exchanger 3 is communicated with the inlet of the first-grade green heat pump 8. According to the scheme, a large amount of cooling water (fresh water or sea water) is not needed, a cooling tower is not needed and a large amount of fresh water loss is avoided in the working process of the steam turbine; the scheme of the invention can greatly improve the work-carrying and power-generating efficiency of the steam turbine.
Description
Technical Field
The invention belongs to the field of turbine systems, and particularly relates to a technology for working and exhaust steam recovery of a turbine.
Background
30 days of 3 months in 2020, the application number is: 202010222619.2 the invention is: the green heat pump refrigerating and heating device is applied to the work of the steam turbine, and the scheme of the invention can recover a large amount of exhaust steam heat in the concrete implementation and can greatly improve the circulating heat efficiency of the steam turbine. The technical characteristics of the steam turbine in the process of greatly improving the work and the power generation efficiency are not perfect, especially in the heating system, the technical characteristics of the recovery dead steam diving process are not perfect.
Disclosure of Invention
The scheme of the invention is to perfect the scheme of the invention patent application with the application number of 202010222619.2, and to recombine the structure, the key point is to recombine the heating system, and after recombination, the steam turbine can carry out regenerative cycle with little or no steam which does not do work. The technical scheme and the heating system are more perfect through the change of the parts and the change of the part relation, so that the work and the power generation efficiency of the steam turbine are greatly improved, and the work and the power generation efficiency of the steam turbine are more than or equal to 60 percent.
According to the patent application scheme, the green heat pump refrigerating and heating device is applied to the work of a steam turbine, and three systems are provided: refrigerating system, turbine system, heating system.
The refrigeration system of the present application includes: the full phase change heat exchanger, breakwater, vacuum pump, refrigerant water tank, refrigerant water pump, condensate pump < not drawing in the figure >, wherein, the full phase change heat exchanger includes: the heat exchange device comprises a shell, an inlet and an outlet which are arranged on the shell, and a heat exchange cavity defined by the shell: the heat exchange cavity is internally provided with a sprayer and a full-phase conversion heat pipe, the sprayer is arranged above the full-phase conversion heat pipe, the full-phase conversion heat pipe is provided with an inlet and an outlet, and the inlet and the outlet are respectively provided with a baffle plate for separating exhaust steam, condensed water and refrigerant. The sprayer is used for spraying the refrigerant to the outer surface of the full-phase conversion heat pipe, and is provided with an inlet and an outlet. The refrigerant water pump is provided with an inlet and an outlet, the pump inlet is communicated with the outlet of the refrigerant water tank, and the pump outlet is communicated with the inlet of the sprayer; the upper part of the right side of the full phase-change heat exchanger shell is communicated with an inlet of a vacuum pump; the steam outlet at the right upper part of the shell of the full phase-change heat exchanger is communicated with the inlet of the water baffle; the water outlet at the lower part of the shell of the full phase-change heat exchanger is communicated with a water inlet of the refrigerant water tank; the condensate water outlet at the right lower part of the full phase-change heat exchanger shell is communicated with the inlet of a condensate water pump, and the outlet of the condensate water pump (not drawn in the figure) is communicated with the other inlet of the refrigerant water tank; the exhaust steam inlet of the heat exchange tube in the full phase change heat exchanger is communicated with the low-pressure exhaust steam outlet of the steam turbine;
the turbine system of the present application comprises: the system comprises a deaerator, a feed pump, a boiler, a high-pressure superheater, a steam turbine and a generator; the deaerator outlet is communicated with the water feeding pump inlet, the water feeding pump outlet is communicated with the boiler inlet, the boiler outlet is communicated with the high-pressure superheater inlet, the high-pressure superheater outlet is communicated with the high-pressure stage inlet of the steam turbine, and the low-pressure stage exhaust steam outlet of the steam turbine is communicated with the exhaust steam inlet of the heat exchange tube of the full-phase-change heat exchanger;
the heating system of the present application includes: the first-stage green heat pump < has an inlet and an outlet >, the shell of the first latent heat recoverer < has an inlet and an outlet, the recoverer is internally provided with a heat exchange tube, the tube is provided with a steam inlet, a steam outlet and a water outlet >, the second-stage green heat pump < has an inlet and an outlet, the shell of the second latent heat recoverer < has an inlet, an outlet and a water outlet, the three-stage green heat pump < has an inlet and an outlet, the shell of the third latent heat recoverer < has an inlet and an outlet, the recoverer is internally provided with a heat exchange tube, and the tube is provided with a steam inlet and a water outlet); the first warming water tank < the tank has an inlet, an outlet >, the first warming water pump < the pump has an inlet, an outlet >, the second warming water tank < the tank has an inlet, an outlet >, the second warming water pump < the pump has an inlet, an outlet >; a two-way valve, a water supply tank < the tank has an inlet, an outlet >, a water supply pump < the pump has an inlet, an outlet >;
the first-stage green heat pump inlet is communicated with the water baffle outlet, the first-stage green heat pump outlet is communicated with the heat exchange tube inlet in the first latent heat recoverer, the heat exchange tube steam outlet in the first latent heat recoverer is communicated with the second-stage green heat pump inlet, the second-stage green heat pump outlet is communicated with the heat exchange tube steam inlet in the second latent heat recoverer, the heat exchange tube steam outlet in the second latent heat recoverer is communicated with the third-stage green heat pump inlet, the third-stage green heat pump outlet is communicated with the heat exchange tube steam inlet in the third latent heat recoverer, the heat exchange tube water outlet in the third latent heat recoverer is communicated with the first inlet of the second heating water pump, and the second heating water pump outlet is communicated with the deaerator inlet;
the water outlet of the heat exchange tube in the first latent heat recoverer is communicated with the water inlet of the first heating water tank, the water outlet of the first heating water tank is communicated with the water inlet of the first heating water pump, the water outlet of the first heating water pump is communicated with the water inlet of the second heating water tank, the water outlet of the heat exchange tube in the second latent heat recoverer is communicated with the other water inlet of the second heating water tank, the water outlet of the second heating water tank is communicated with the other inlet of the second heating water pump, and the water outlet of the second heating water pump is communicated with the inlet of the deaerator.
The deaerator outlet is communicated with the water feeding pump inlet, the water feeding pump outlet is communicated with the boiler inlet, the boiler outlet is communicated with the high-pressure superheater inlet, the high-pressure superheater outlet is communicated with the high-pressure stage inlet of the steam turbine, and the steam becomes exhaust steam after the high, medium and low-pressure stages work, and the low-pressure stage exhaust steam outlet is communicated with the exhaust steam inlet of the heat exchange tube of the full phase change heat exchanger.
One end of the two-way valve is communicated with the refrigerant water tank, and the other end of the two-way valve is communicated with an inlet of the water supply tank; the inlet of the water supply pump is communicated with the outlet of the water supply tank, the outlet of the water supply pump is communicated with the inlet of the shell of the first latent heat recoverer, the outlet of the shell of the first latent heat recoverer is communicated with the inlet of the shell of the second latent heat recoverer, the outlet of the shell of the second latent heat recoverer is communicated with the inlet of the shell of the third latent heat recoverer, the outlet of the shell of the third latent heat recoverer is communicated with the inlet of the low-pressure superheater which is not shown in the figure, the outlet of the low-pressure superheater is communicated with the inlet of the low-pressure stage of the steam turbine, the other outlet of the low-pressure stage exhaust steam of the steam turbine is communicated with the inlet of a heat exchange pipe in the sewage purifier or the sea water desalinator, or is communicated with the inlet of a heat exchange pipe of a tap water plant, and the outlet of the heat exchange pipe is communicated with the other inlet of the water supply tank;
(011a) The steam turbine 15 is independently provided with only a low-pressure stage, namely a steam turbine b for short, the shell outlet of the third latent heat recoverer is communicated with the inlet of the low-pressure superheater, the outlet of the low-pressure superheater is communicated with the inlet of the steam turbine b, the exhaust steam outlet of the steam turbine b is communicated with the inlet of a heat exchange tube of a sewage purifier or a sea water desalinator or the inlet of a heat exchange tube of a tap water plant, and the outlet of the heat exchange tube is communicated with the other inlet of the water supply tank.
(011b) By the above work, about 50% of the total heat energy is wasted, and more than 20% of the latent heat is recovered for power generation. The outlet exhaust steam latent heat of the steam turbine b is the residual exhaust steam latent heat which is not recovered, and in order to recover the residual exhaust steam latent heat and then use the residual exhaust steam for power generation, a new three system of a new refrigeration, heating and steam turbine e < new three system for short >: and a dead steam outlet of the steam turbine b is communicated with a dead steam inlet of a heat exchange pipe in a full phase change heat exchanger in the new three systems, and the steam turbine e in the new three systems carries out the processes of recovering, repressurizing, re-superheating and re-generating the residual latent heat of the steam turbine b. And (3) delivering the latent heat of the exhaust steam exhausted by the steam turbine b into a new three-system, and increasing the temperature to be less than or equal to 150 ℃ after the latent heat of the exhaust steam is compressed by a green heat pump of the new three-system.
Three systems of the present application scheme: the working procedures of the refrigerating system, the steam turbine system and the heating system are as follows:
after the high-pressure steam works in the high-pressure stage, the medium-pressure stage and the low-pressure stage of the steam turbine, dead steam enters the heat exchange tube of the full-phase-change heat exchanger from the first outlet of the low-pressure stage, condensed water enters a condensate pump (not drawn in the figure) from the lower right outlet of the shell of the full-phase-change heat exchanger after condensation, and the condensate pump pumps the water into the refrigerant water tank from the other inlet of the refrigerant water tank; the non-condensable gas is pumped by a vacuum pump.
The water of the refrigerant water tank is pumped into the sprayer by the refrigerant water pump to spray, steam generated after spraying enters the water baffle, and the water which is not evaporated enters the refrigerant water tank from the outlet at the lower part of the shell of the full phase-change heat exchanger through the inlet of the refrigerant water tank.
After the primary green heat pump is started, steam enters the pump from the water baffle, the temperature of the steam after the steam is compressed and raised is less than or equal to 100 ℃, the steam enters the heat exchange tube of the first latent heat recoverer, and less than or equal to 50% of the steam entering the heat exchange tube of the recoverer is condensed into water; the uncondensed steam enters a secondary green heat pump, the temperature of the steam after the temperature rise is not more than 200 ℃ through the compression and the temperature rise of the pump, the steam enters a heat exchange pipe of a second latent heat recoverer, and not more than 25% of the steam entering the heat exchange pipe of the recoverer is condensed into water; the uncondensed steam enters a three-stage green heat pump, the temperature of the heated steam is less than or equal to 300 ℃ after being compressed and heated, the steam enters a heat exchange pipe of a third latent heat recoverer, the steam entering the heat exchange pipe of the recoverer is totally condensed into water, the condensed water is sucked into a second heating water pump, and the water is pumped into a deaerator.
Condensed water in a heat exchange tube of the first latent heat recoverer enters a first heating water tank from a water outlet, and a first heating water pump pumps water of the water tank into a second heating water tank; condensed water in the heat exchange tube of the second latent heat recoverer enters the second heating water tank from the water outlet, water in the second heating water tank is sucked into the second heating water pump, and the second heating water pump pumps the heated water into the deaerator.
Starting a water supply pump, pumping cold water of a water supply tank into the first latent heat recoverer, wherein the temperature of the water after heating is less than or equal to 80 ℃, the water enters the second latent heat recoverer, and the phase change of the water after heating is as follows: the temperature of the wet saturated steam is less than or equal to 180 ℃, the temperature of the steam enters a third latent heat recoverer, the temperature of the heated steam is less than or equal to 280 ℃, the steam is dry saturated steam, the steam enters a low-pressure superheater to heat, enters a low-pressure stage of a steam turbine to do work, is discharged from another exhaust steam outlet, the exhaust steam enters a heat exchange pipe of a sewage purifier or a sea water desalinator to discharge residual latent heat for condensation into water, or the exhaust steam enters a heat exchange pipe of a water works to discharge the residual latent heat for condensation into water, and the water returns to a water supply tank for recycling.
According to the technical scheme, the reason for improving the power generation efficiency from 40% to 60%:
the mode of steam turbine condensation exhaust steam of prior art: the heat conduction mode is used for condensing the exhaust steam, so that the power consumption is high, and the latent heat of the exhaust steam cannot be recovered. For example, a turbine with the power generation power of 30 KW, the minimum consumption of cooling water is 3 ten thousand and 6 Kton/hour, and the power consumption is 2% of the power generation of a power plant. According to the scheme, the dead steam is condensed by using a full phase change heat transfer mode, the power generation power is also 30 ten thousand KW of steam turbines, and the water consumption of the refrigerant is as follows: compared with the consumption of cooling water in a heat conduction mode, the energy consumption is saved by 95% and the energy is saved for the power consumption of the primary green heat pump, namely 1 kilo 8 hundred tons/hour.
The condensed water of the steam turbine with super high pressure in the prior art needs to be heated by steam capable of acting for 8 times, and then the temperature of the condensed water is raised from 40 ℃ to 280 ℃ and is sent back to the boiler. The equivalent of coal used for heating condensed water and consuming heat is less than or equal to 25 percent of the equivalent of coal in the whole plant. According to the scheme, the condensed water is not heated by using the steam capable of doing work, and the steam capable of doing work is enabled to perform work circulation, so that the generated energy is increased.
According to the technical scheme, two parts of steam with the same quantity work in the low-pressure stage of the steam turbine, which is 2 times of the work amount of the low-pressure stage of the steam turbine in the prior art.
According to the technical scheme, the turbine with the same power as the turbine in the prior art is used, the power consumption of the primary green heat pump is the power consumption saved, and the total electric quantity of the secondary green heat pump and the tertiary green heat pump is 2% of the generated energy of the whole plant.
The steam turbine in the prior art wastes approximately 50% of heat energy, fluid circularly works in the three systems of the invention, and the heat energy with more than 20% of dead steam latent heat can be recovered for power generation, so that the power generation efficiency of the steam turbine is improved from 40% to 60%.
After a new three-system is established, the total power generation efficiency can reach 70 percent.
Drawings
FIG. 1 is a schematic view of the present general inventive concept;
FIG. 2 is a schematic view of an embodiment of the present invention applied to the work of a steam turbine;
Detailed Description
In order to make the technical solution, technical advantages and objects of the present invention more clear, the present invention will be clearly and completely described below with reference to the accompanying drawings of the technical solution of the present invention, and it is obvious that the described embodiments may not be all embodiments but only some embodiments of the present invention. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.
The invention discloses a green heat pump refrigerating and heating device applied to the work of a steam turbine, as shown in fig. 1, and the technical scheme of the invention comprises three systems: a refrigeration system 1, a turbine system 3a and a heating system 2. Wherein the refrigeration system 1 comprises: the device comprises a full phase change heat exchanger 3, a refrigerant water tank 6 and a refrigerant water pump 7, wherein the outlet of the refrigerant water pump 7 is communicated with the inlet of a sprayer, the inlet of the pump 7 is communicated with the outlet of the refrigerant water tank 6, one inlet of the water tank 6 is communicated with the outlet of the lower part of a shell of the heat exchanger 3, and the outlet of a heat exchange tube at the right lower part of the shell of the heat exchanger 3 is communicated with the other inlet of the refrigerant water tank 6; wherein the heating system 2 comprises: the upper outlet of the shell of the heat exchanger 3 is communicated with the inlet of the primary green heat pump 8; in the working process of the steam turbine, a large amount of cooling water (fresh water or sea water) is not needed, a cooling tower is not needed, and a large amount of fresh water loss is avoided; the scheme of the invention can greatly improve the work-carrying and power-generating efficiency of the steam turbine.
The green heat pump refrigerating and heating device is applied to the work of a steam turbine, and as shown in fig. 2, the technical scheme of the invention comprises three systems: a refrigerating system 1, a steam turbine system 3a and a heating system 2;
the refrigeration system 1 includes: the full phase change heat exchanger 3, the water baffle 4, the vacuum pump 5, the refrigerant water tank 6, the refrigerant water pump 7, the exhaust steam inlet 26, the exhaust steam of the steam turbine and the other outlet 27, and the condensate water pump is not drawn in the figure; wherein the full phase change heat exchanger 3 comprises: the heat exchange device comprises a shell, an inlet and an outlet which are arranged on the shell, and a heat exchange cavity defined by the shell: the heat exchange cavity is internally provided with a sprayer and a full-phase conversion heat pipe, the sprayer is arranged above the full-phase conversion heat pipe, the full-phase conversion heat pipe is provided with an inlet and an outlet, and the inlet and the outlet are respectively provided with a baffle plate for separating exhaust steam, condensed water and refrigerant. The sprayer is used for spraying the refrigerant to the outer surface of the heat exchange tube of the full-phase heater, and is provided with an inlet and an outlet. The refrigerant water pump 7 is provided with an inlet and an outlet, the inlet of the pump is communicated with the outlet of the refrigerant water tank 6, and the outlet of the pump is communicated with the inlet of the sprayer; the upper part of the right side of the full phase-change heat exchanger 3 is communicated with the inlet of the vacuum pump 5; the steam outlet at the right upper part of the shell of the full phase-change heat exchanger 3 is communicated with the inlet of the water baffle 4, and the outlet at the lower part of the shell of the full phase-change heat exchanger 3 is communicated with one inlet of the refrigerant water tank 6; the outlet of the right lower part of the shell of the full phase-change heat exchanger 3 is communicated with the inlet of a condensate pump, and the outlet of the condensate pump is communicated with the other inlet of the refrigerant water tank 6; the exhaust steam inlet 26 of the heat exchange tube in the full phase-change heat exchanger 3 is communicated with the low-pressure exhaust steam outlet of the steam turbine 15.
The steam turbine system 3a includes: deaerator 11, feed pump 12, boiler 13, high-pressure superheater 14, steam turbine 15, generator 16; the outlet of the deaerator 11 is communicated with the inlet of the water feeding pump 12, the outlet of the water feeding pump 12 is communicated with the inlet of the boiler 13, the outlet of the boiler 13 is communicated with the inlet of the high-pressure superheater 14, the outlet of the high-pressure superheater 14 is communicated with the high-pressure stage inlet of the steam turbine 15, and the low-pressure stage exhaust steam outlet of the steam turbine 15 is communicated with the exhaust steam inlet 26; the low-pressure stage of the turbine 15 is connected to a generator 16.
The heating system 2 includes: the first stage green heat pump 8, the first latent heat recoverer 17< recoverer housing having an inlet, an outlet, a heat exchange tube within the recoverer, the tube having a steam inlet, a steam outlet, a water outlet), the second stage green heat pump 18< the pump having an inlet, an outlet, the second latent heat recoverer 19< recoverer housing having an inlet, an outlet, a heat exchange tube within the recoverer, the tube having a steam inlet, a steam outlet, a water outlet, the third stage green heat pump 20< the pump having an inlet, an outlet), the third latent heat recoverer 21< the recoverer housing having an inlet, an outlet, the recoverer having a heat exchange tube within the recoverer, the tube having a steam inlet, a water outlet, the first warming water tank 22< the water tank having an inlet, an outlet >, the first warming water pump 23< the pump having an inlet, an outlet >, the second warming water tank 24< the water tank having an inlet, an outlet), the second warming water pump 25< the pump having an inlet, an outlet >, a two-way valve, the water tank 10< the water tank having an inlet, an outlet >, a water supply pump 9< the pump having an inlet, an outlet).
The inlet of the primary green heat pump 8 is communicated with the outlet of the water baffle 4, the outlet of the primary green heat pump 8 is communicated with the steam inlet of the heat exchange tube of the first latent heat recoverer 17, the steam outlet of the heat exchange tube of the first latent heat recoverer 17 is communicated with the inlet of the secondary green heat pump 18, the outlet of the secondary green heat pump 18 is communicated with the steam inlet of the heat exchange tube of the second latent heat recoverer 19, the steam outlet of the heat exchange tube of the second latent heat recoverer 19 is communicated with the inlet of the tertiary green heat pump 20, the outlet of the pump 20 is communicated with the steam inlet of the heat exchange tube of the third latent heat recoverer 21, the water outlet of the heat exchange tube of the recoverer 21 is communicated with the inlet of the second warming water pump 25, and the water outlet of the pump 25 is communicated with the deaerator 11.
The water outlet of the heat exchange tube of the first latent heat recoverer 17 is communicated with the inlet of the first warming water tank 22, the water outlet of the water tank 22 is communicated with the water inlet of the first warming water pump 23, the water outlet of the pump 23 is communicated with the water inlet of the second warming water tank 24, the water outlet of the heat exchange tube of the second latent heat recoverer 19 is communicated with the other water inlet of the second warming water tank 24, the water outlet of the water tank 24 is communicated with the other inlet of the second warming water pump 25, and the water outlet of the pump 25 is communicated with the inlet of the deaerator 11.
The outlet of the deaerator 11 is communicated with the inlet of the water feeding pump 12, the outlet of the water feeding pump 12 is communicated with the inlet of the boiler 13, the outlet of the boiler 13 is communicated with the inlet of the high-pressure superheater 14, the outlet of the superheater 14 is communicated with the inlet of the high-pressure stage of the steam turbine 15, superheated steam becomes dead steam after working at high, medium and low pressure stages, and the outlet of the low-pressure stage of the dead steam is communicated with the dead steam inlet 26 of the heat exchange tube of the full phase-change heat exchanger 3.
One end of a two-way valve is communicated with a refrigerant water tank 6, the other end of the valve is communicated with an inlet of a water supply tank 10, an outlet of the water tank 10 is communicated with an inlet of a water supply pump 9, a water outlet of the pump 9 is communicated with a housing inlet of a first latent heat recoverer 17, a housing outlet of the recoverer 17 is communicated with a housing inlet of a recoverer 19, a housing outlet of the recoverer 19 is communicated with a housing inlet of a low-pressure superheater (not shown in the figure), a housing outlet of the recoverer 21 is communicated with a low-pressure stage inlet of a steam turbine 15, a low-pressure stage exhaust steam other outlet 27 of the steam turbine 15 is communicated with a heat exchange pipe inlet in a sewage purifier or a seawater desalination device or with a heat exchange pipe inlet of a tap water plant, and a heat exchange pipe outlet is communicated with another inlet of the water supply tank 10.
(036a) The steam turbine with only low pressure stage is independently arranged outside the steam turbine 15, the shell outlet of the third latent heat recoverer 21 is communicated with the inlet of the low pressure superheater, the outlet of the low pressure superheater is communicated with the inlet of the steam turbine b, the exhaust steam outlet of the steam turbine b is communicated with the inlet of a heat exchange pipe of a sewage purifier or a sea water desalinator or is communicated with the inlet of a heat exchange pipe of a tap water plant, and the outlet of the heat exchange pipe is communicated with the other inlet of the water supply tank 10;
(036b) The exhaust steam latent heat of the turbine b is more than 20% of the total latent heat of the power plant, a set of three systems of refrigeration, heating and turbine e (short for new three systems) is needed to be newly established for recovering the exhaust steam latent heat for regenerating, and the exhaust steam outlet of the turbine b is communicated with the exhaust steam inlet of a heat exchange tube of the full phase-change heat exchanger in the refrigeration system of the new three systems, and the turbine e of the new three systems recovers, represses, re-heats and regenerates the exhaust steam latent heat of the turbine b.
Claims (5)
1. A green heat pump refrigerating and heating device applied to the work of a steam turbine comprises three systems: a refrigerating system (1), a steam turbine system (3 a) and a heating system (2);
the refrigeration system (1) comprises: the full phase-change heat exchanger (3), a vacuum pump (5), a refrigerant water tank (6), a refrigerant water pump (7), a water baffle (4), a dead steam inlet (26) and a condensate water pump; wherein the full phase change heat exchanger (3) comprises: the heat exchange device comprises a shell, an inlet and an outlet which are arranged on the shell, and a heat exchange cavity defined by the shell: the heat exchange cavity is internally provided with a sprayer and a full-phase conversion heat pipe, the sprayer is arranged above the full-phase conversion heat pipe, the full-phase conversion heat pipe is provided with an inlet and an outlet, and the inlet and the outlet are respectively provided with a baffle plate for separating exhaust steam, condensed water and refrigerant; the sprayer is provided with an inlet and an outlet, the refrigerant water tank (6) is provided with an inlet and an outlet, the refrigerant water pump (7) is provided with an inlet and an outlet, the inlet of the refrigerant water pump (7) is communicated with the outlet of the refrigerant water tank (6), and the outlet of the refrigerant water pump (7) is communicated with the inlet of the sprayer; the upper right side of the full phase-change heat exchanger (3) is communicated with an inlet of a vacuum pump (5), a steam outlet at the upper right side of a shell of the full phase-change heat exchanger (3) is communicated with an inlet of a water baffle (4), an outlet at the lower right side of the shell of the full phase-change heat exchanger (3) is communicated with one inlet of a refrigerant water tank (6), an outlet at the lower right side of the shell of the full phase-change heat exchanger (3) is communicated with an inlet of a condensate pump, an outlet of the condensate pump is communicated with the other inlet of the refrigerant water tank (6), and a waste steam inlet (26) of a heat exchange tube in the full phase-change heat exchanger (3) is communicated with a low-pressure-stage waste steam outlet of a steam turbine (15);
the steam turbine system (3 a) includes: the system comprises a deaerator (11), a feed pump (12), a boiler (13), a high-pressure superheater (14), a steam turbine (15), a generator (16) and a dead steam other outlet (27) of the steam turbine (15); the outlet of the deaerator (11) is communicated with the inlet of the water feeding pump (12), the outlet of the water feeding pump (12) is communicated with the inlet of the boiler (13), the outlet of the boiler (13) is communicated with the inlet of the high-pressure superheater (14), the outlet of the high-pressure superheater (14) is communicated with the high-pressure stage inlet of the steam turbine (15), and after the steam is subjected to work in the high, medium and low pressure stages, the low-pressure stage exhaust steam outlet of the steam turbine (15) is communicated with the exhaust steam inlet (26); the low-pressure stage of the steam turbine (15) is connected with a generator (16);
the heating system (2) comprises: a primary green heat pump (8); the shell of the first latent heat recoverer (17) is provided with an inlet and an outlet, the first latent heat recoverer (17) is internally provided with a heat exchange tube, and the tube is provided with a steam inlet, a steam outlet and a water outlet; a secondary green heat pump (18), the secondary green heat pump (18) having an inlet and an outlet; the second latent heat recoverer (19), the second latent heat recoverer (19) shell has inlet, outlet, there are heat exchange tubes in the second latent heat recoverer (19), the tube has steam inlet, steam outlet, water outlet; the three-stage green heat pump (20), the three-stage green heat pump (20) has an inlet and an outlet; the shell of the third latent heat recoverer (21) is provided with an inlet and an outlet, the third latent heat recoverer (21) is internally provided with a heat exchange tube, and the heat exchange tube is provided with a steam inlet and a water outlet; a first warming water tank (22), wherein the first warming water tank (22) is provided with an inlet and an outlet; a first warming water pump (23), wherein the first warming water pump (23) is provided with an inlet and an outlet; a second warming water tank (24), wherein the second warming water tank (24) is provided with an inlet and an outlet; the second heating water pump (25), the second heating water pump (25) has inlet, outlet; a two-way valve, a water supply tank (10) and a water supply pump (9);
the inlet of the primary green heat pump (8) is communicated with the outlet of the water baffle (4), the outlet of the primary green heat pump (8) is communicated with the steam inlet of the heat exchange tube of the first latent heat recoverer (17), the steam outlet of the heat exchange tube of the first latent heat recoverer (17) is communicated with the inlet of the secondary green heat pump (18), the outlet of the secondary green heat pump (18) is communicated with the steam inlet of the heat exchange tube of the second latent heat recoverer (19), the steam outlet of the heat exchange tube of the second latent heat recoverer (19) is communicated with the inlet of the tertiary green heat pump (20), the outlet of the tertiary green heat pump (20) is communicated with the steam inlet of the heat exchange tube of the third latent heat recoverer (21), and the water outlet of the heat exchange tube of the third latent heat recoverer (21) is communicated with the inlet of the second warming water pump (25);
the water outlet of a heat exchange pipe of the first latent heat recoverer (17) is communicated with the inlet of a first heating water tank (22), the water outlet of the first heating water tank (22) is communicated with the water inlet of a first heating water pump (23), the water outlet of the first heating water pump (23) is communicated with the water inlet of a second heating water tank (24), the water outlet of a heat exchange pipe of the second latent heat recoverer (19) is communicated with the other water inlet of the second heating water tank (24), the water outlet of the second heating water tank (24) is communicated with the other inlet of a second heating water pump (25), the outlet of the second heating water pump (25) is communicated with the inlet of a deaerator (11), and the low-pressure-stage first exhaust steam outlet of the steam turbine (15) is communicated with the exhaust steam inlet (26);
one end of a two-way valve is communicated with a refrigerant water tank (6), the other end of the two-way valve is communicated with an inlet of a water supply tank (10), an outlet of the water supply tank (10) is communicated with an inlet of a water supply pump (9), an outlet of the water supply pump (9) is communicated with a shell inlet of a first latent heat recoverer (17), a shell outlet of the first latent heat recoverer (17) is communicated with a shell inlet of a second latent heat recoverer (19), a shell outlet of the second latent heat recoverer (19) is communicated with a shell inlet of a third latent heat recoverer (21), a shell outlet of the third latent heat recoverer (21) is communicated with a low-pressure superheater inlet, a low-pressure stage superheater outlet is communicated with a low-pressure stage inlet of a steam turbine (15), and a low-pressure stage exhaust steam other outlet (27) is communicated with a sewage purifier or a heat exchange tube inlet of a seawater desalination device or a heat exchange tube inlet of a tap water plant, and the heat exchange tube outlet is communicated with another inlet of the water supply tank (10).
2. The green heat pump refrigerating and heating device applied to the work of the steam turbine according to claim 1, wherein a steam turbine (15) is arranged outside the independent low-pressure-stage steam turbine, namely a steam turbine b; the shell outlet of the third latent heat recoverer (21) is communicated with the inlet of the low-pressure superheater, the outlet of the low-pressure superheater is communicated with the inlet of the steam turbine b, the exhaust steam outlet of the steam turbine b is communicated with the inlet of a heat exchange pipe of the sewage purifier or the sea water desalination device, or the inlet of the heat exchange pipe of a water works, and the outlet of the heat exchange pipe is communicated with the other inlet of the water supply tank (10).
3. The green heat pump refrigerating and heating device applied to the working of the steam turbine according to claim 2 is characterized in that a new three-system of refrigerating, heating and steam turbine e is established, namely a new three-system is established, a shell outlet of a third latent heat recoverer (21) is communicated with a low-pressure superheated steam inlet, a low-pressure superheater outlet is communicated with an inlet of a steam turbine b, a dead steam outlet of the steam turbine b is communicated with a dead steam inlet of a refrigerating system in the new three-system, and the new three-system recovers, pressurizes and superheats the dead steam latent heat of the steam turbine b, and then steam enters the steam turbine e to work or generate power.
4. The green heat pump refrigerating and heating device applied to the working of the steam turbine according to claim 1, wherein the temperature of steam is increased to be less than or equal to 100 ℃ after the compression of the primary green heat pump (8), the temperature of steam is increased to be less than or equal to 200 ℃ after the compression of the secondary green heat pump (18), the temperature of steam is increased to be less than or equal to 300 ℃ after the compression of the tertiary green heat pump (20), and the steam enters the third latent heat recoverer (21) to be converted into water.
5. The green heat pump refrigerating and heating device applied to the working of the steam turbine according to claim 1, wherein the water supply pump (9) pumps cold water into the first latent heat recoverer (17) to a temperature less than or equal to 80 ℃, the water is heated into the second latent heat recoverer (19) to a temperature less than or equal to 180 ℃, the phase change is changed into wet steam, the steam is heated into the third latent heat recoverer (21), the temperature of the steam is heated into less than or equal to 280 ℃, and the steam is heated into the low-pressure superheater.
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| CN108662802A (en) * | 2017-03-27 | 2018-10-16 | 吴巧魁 | Green heat pump refrigerating heating system, refrigerating and heating method and air-conditioning |
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| CN111023619A (en) * | 2019-11-13 | 2020-04-17 | 吴巧魁 | Green heat pump refrigerating and heating device and method |
| CN111397248A (en) * | 2020-03-30 | 2020-07-10 | 吴巧魁 | Green heat pump refrigerating and heating device applied to working of steam turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11173109A (en) * | 1997-12-05 | 1999-06-29 | Pado:Kk | Power generation and hot water supply system |
| CN108662802A (en) * | 2017-03-27 | 2018-10-16 | 吴巧魁 | Green heat pump refrigerating heating system, refrigerating and heating method and air-conditioning |
| CN108194152A (en) * | 2018-02-01 | 2018-06-22 | 贾博麟 | Fire coal/combustion gas/fuel oil/biomass/underground heat/solar energy/nuclear energy unit uses high/low temperature Steam Turbine combined generating system |
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