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US 7,318,316 B2Granted
Reheat/regenerative type thermal power plant using Rankine cycle
OwnerKatsushige Yamadainventor
Life of this patent
Estimating the term…
Abstract
A reheat-and-regenerating type thermal power plant (A) using Rankine cycle has a water feed bypass (BW) which supplies high temperature fluid (28) produced in a large incineration plant (27) to a heat exchanger (29) and by which confluent feed water (Wg) resulting from the confluence of separated condensed-water (32), separated low temperature feed water (33), separated medium temperature feed water (34) and separated high temperature feed water (35) is supplied to a superheat conduction pipe (3a) through a heat exchanger conduction pipe (29a). The water feed bypass (BW) is installed separately from a feed water path (W), thus insuring an efficient use of the high temperature fluid (28) produced upon incinerating a huge amount of combustible wastes in the large incineration plant (27).
Claims5
A thermal power plant (A) using a reheating-and-regenerating type Rankine cycle comprising:
- a superheat conduction pipe (3a) provided to produce a main steam (4) with high pressure and high temperature to transfer said main steam (4) to a high pressure turbine (5);
- a reheat conduction pipe (7a) is installed in a boiler (1) to reheat a steam produced by said high pressure turbine (5) to provide a reheat steam (8) which is to be supplied to a medium pressure turbine (9) and a low pressure turbine (10);
- an evaporation heat conduction pipe provided to be heated by burning a fossil fuel;
- an electric generator (11) driven by each of the turbines (5, 9, 10) to generate an electricity;
- a condenser unit (13) provided to form a condensed water from an exit steam which said low pressure turbine (10) exhausts;
- a feed water path (W) through which the condensed water passes to said evaporation heat conduction pipe of said boiler (1);
- said feed water path (W) providing a low pressure feed water heater (16), a medium pressure feed water heater (20) and a high pressure feed water heater (22) to which a low pressure bleed (17), a medium pressure bleed (21) and a high pressure bleed (23) are in turn supplied from the respective turbines (10, 9, 5);
- a feed water bypass (BW) provided independent of said feed water path (w) to join a condensed water (14) flowed out of the condenser unit (13) and feed waters (18-1, 18-2, 18-3) each flowed out of the respective feed water heaters (16, 20, 22) so as to form confluent feed waters (Wg), said confluent feed waters (Wg) being transferred to said evaporation heat conduction pipe through a heat exchanger conduction pipe (29a) which is provided with a heat exchanger (29);
- whereby a huge amount of combustible wastes incinerated in a large incineration plant (27) produces a high temperature fluid (28) which passes through said heat exchanger (29) to form an incineration plant drain (30) which is returned to said large incineration plant (27) by means of an incineration drain pump (31).
6 more elements
A thermal power plant (A) using a reheating-and-regenerating type Rankine cycle comprising:
- a superheat conduction pipe (3a) provided to produce a main steam (4) with high pressure and high temperature to transfer said main steam (4) to a high pressure turbine (5);
- a reheat conduction pipe (7a) is installed in a boiler (1) to reheat a steam produced by said high pressure turbine (5) to provide a reheat steam (8) which is to be supplied to a medium pressure turbine (9) and a low pressure turbine (10);
- an evaporation heat conduction pipe provided to be heated by burning a fossil fuel;
- an electric generator (11) driven by each of the turbines (5, 9, 10) to generate an electricity;
- a condenser unit (13) provided to form a condensed water from an exit steam which said low pressure turbine (10) exhausts;
- a feed water path (w) through which the condensed water passes to said evaporation heat conduction pipe of said boiler (1);
- said feed water path (W) providing a low pressure feed water heater (16), a medium pressure feed water heater (20) and a high pressure feed water heater (22) to which a low pressure bleed (17), a medium pressure bleed (21) and a high pressure bleed (23) are in turn supplied from the respective turbines (10, 9, 5);
- a feed water bypass (BW) provided independent of said feed water path (W) to join a condensed water (14) flowed out of the condenser unit (13) and feed waters (18-1, 18-2, 18-3) each flowed out of the respective feed water heaters (16, 20, 22) so as to form confluent feed waters (Wg), said confluent feed waters (Wg) being transferred to said evaporation heat conduction pipe through a heat exchanger conduction pipe (29a) which is provided with a heat exchanger (29);
- a huge amount of combustible wastes incinerated in a large incineration plant (27) producing a high temperature fluid (28) which passes through said heat exchanger (29) to form an incineration plant drain (30) which is returned to said large incineration plant (27) by means of an incineration plant drain pump (31);
- and
- means provided to adjust a quantity of pressure bleed (23, 21, 17) supplied from each of the turbines (5, 9, 10) to the respective feed water heaters (22, 20, 16) depending on the caloric heat of the high temperature fluid (28) flowing into the heat exchanger (29).
8 more elements
A thermal power plant (A) using a reheating-and-regenerating type Rankine cycle comprising:
- a superheat conduction pipe (3a) provided to produce a main steam (4) with high pressure and high temperature to transfer said main steam (4) to a high pressure turbine (5);
- a reheat conduction pipe (7a) is installed in a boiler (1) to reheat a steam produced by said high pressure turbine (5) to provide a reheat steam (8) which is to be supplied to a medium pressure turbine (9) and a low pressure turbine (10);
- an evaporation heat conduction pipe provided to be heated by burning a fossil fuel;
- an electric generator (11) driven by each of the turbines (5, 9, 10) to generate an electricity;
- a condenser unit (13) provided to form a condensed water from an exit steam which said low pressure turbine (10) exhausts;
- a feed water path (W) through which the condensed water passes to said evaporation heat conduction pipe of said boiler (1);
- said feed water path (W) providing a low pressure feed water heater (16), a medium pressure feed water heater (20) and a high pressure feed water heater (22) to which a low pressure bleed (17), a medium pressure bleed (21) and a high pressure bleed (23) are in turn supplied from the respective turbines (10, 9, 5);
- a feed water bypass (BW) provided independent of said feed water path (W) to join a condensed water (14) flowed out of the condenser unit (13) and feed waters (18-1, 18-2, 18-3) each flowed out of the respective feed water heaters (16, 20, 22) so as to form confluent feed waters (Wg), said confluent feed waters (Wg) being transferred to said evaporation heat conduction pipe through a heat exchanger conduction pipe (29a) which is provided with a heat exchanger (29);
- a huge amount of combustible wastes incinerated in a large incineration plant (27) producing a high temperature fluid (28) which passes through said heat exchanger (29) to form an incineration plant drain (30) which is returned to said large incineration plant (27) by means of an incineration plant drain pump (31);
- and
- means provided so that a resultant pressure of said confluent feed waters (14, 18-1, 18-2, 18-3) passing through the heat exchanger conduction pipe (29a) always exceeds a pressure of the high pressure fluid (28) supplied to the heat exchanger (29) from the large incineration plant (27).
8 more elements
Dependencies are inferred from the claim text.