CN110953026A

CN110953026A - Combined cycle power plant

Info

Publication number: CN110953026A
Application number: CN201911146244.XA
Authority: CN
Inventors: 李鸿瑞; 李华玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-22
Filing date: 2019-11-13
Publication date: 2020-04-03

Abstract

The invention provides a combined cycle power device, and belongs to the technical field of energy and power. The condenser is provided with a condensate pipeline which is communicated with a mixed evaporator through a circulating pump, a steam channel of the dual-energy compressor is communicated with the mixed evaporator through a high-temperature heat exchanger, an expansion speed increaser and a medium-temperature evaporator, the mixed evaporator is provided with a steam channel which is respectively communicated with the dual-energy compressor and the expander, the condenser is provided with a condensate pipeline which is communicated with the medium-temperature evaporator through a second circulating pump, the medium-temperature evaporator is provided with a steam channel which is communicated with the second expander, and the expander and the second expander are provided with steam channels which are communicated with the condenser; the external part of the condenser is provided with an air channel and a fuel channel which are communicated with the internal combustion engine, the internal combustion engine is provided with a fuel gas channel which is communicated with the external part through a high-temperature heat exchanger, the internal combustion engine is provided with a cooling medium channel which is communicated with the external part, and the condenser is provided with a cooling medium channel which is communicated with the external part; the expansion speed increaser is connected with the dual-energy compressor and transmits power, and the expansion machine, the second expansion machine, the internal combustion engine and the expansion speed increaser are connected with the outside and output power to form a combined cycle power device.

Description

Combined cycle power plant

The technical field is as follows:

the invention belongs to the technical field of energy and power.

Background art:

cold demand, heat demand and power demand are common in human life and production. In the field of power demand technology, the conversion of thermal energy into mechanical energy is an important way to obtain and provide power. In a direct-fired gas-steam combined cycle of high-quality fuel represented by gasoline, diesel and natural gas, high efficiency of converting thermal energy into mechanical energy is the greatest advantage, but the direct-fired gas-steam combined cycle also has the problems of complicated device, high manufacturing difficulty and high manufacturing cost. In such combined cycle power plants, the expander, compressor, and heat exchanger are often essential basic and core components; the compressor and the expander are difficult to manufacture, high in material requirement and high in manufacturing cost, which is not beneficial to popularization and application of the combined cycle power device. Therefore, it is sought to replace them with simple components or to simplify the structure of the core components in order to reduce the manufacturing difficulty and cost of the combined cycle power plant.

The invention provides a combined cycle power device which combines a dual-energy compressor and an expansion speed increaser and respectively replaces a main compressor and a main expansion machine on the premise of keeping or effectively improving the heat efficiency of the combined cycle power device and aiming at reducing the manufacturing difficulty and the manufacturing cost of core components of the combined cycle power device.

The invention content is as follows:

the invention mainly aims to provide a combined cycle power device combining a dual-energy compressor and an expansion speed increaser and replacing a corresponding main compressor and a corresponding main expander, and the specific contents are explained in sections as follows:

1. the combined cycle power device mainly comprises a compressor, a diffuser pipe, an expander, a spray pipe, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator and an internal combustion engine; the condenser is provided with a condensate pipeline which is communicated with the mixed evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixed evaporator through a spray pipe and a medium temperature evaporator, the mixed evaporator is also provided with a steam channel which is communicated with the compressor through a diffuser pipe and directly communicated with a second expander, the compressor is also provided with a steam channel which is communicated with the expander through a high temperature heat exchanger, the second expander is also provided with a steam channel which is communicated with the condenser, the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through the second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a third expander, and the third expander is also provided with a steam channel which is communicated; the external part is provided with an air channel communicated with the internal combustion engine, the external part is also provided with a fuel channel communicated with the internal combustion engine, the internal combustion engine is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the internal combustion engine is also provided with a cooling medium channel communicated with the external part, the condenser is also provided with a cooling medium channel communicated with the external part, the mixing evaporator or the thermal medium channel is also communicated with the external part, and the medium-temperature evaporator or the thermal medium channel is also communicated; the expander is connected with the compressor and transmits power, and the expander, the second expander, the third expander and the internal combustion engine are connected with the outside and output power to form a combined cycle power device.

2. The combined cycle power device mainly comprises an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, an internal combustion engine, a dual-energy compressor and an expansion speed increaser; the condenser is provided with a condensate pipeline which is communicated with the mixing evaporator through a circulating pump, the expansion speed increaser is provided with a steam channel which is communicated with the mixing evaporator through a medium temperature evaporator, the mixing evaporator is also provided with a steam channel which is respectively communicated with the dual-energy compressor and the expander, the dual-energy compressor is also provided with a steam channel which is communicated with the expansion speed increaser through a high temperature heat exchanger, the expander is also provided with a steam channel which is communicated with the condenser, the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with; the external part is provided with an air channel communicated with the internal combustion engine, the external part is also provided with a fuel channel communicated with the internal combustion engine, the internal combustion engine is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the internal combustion engine is also provided with a cooling medium channel communicated with the external part, the condenser is also provided with a cooling medium channel communicated with the external part, the mixing evaporator or the thermal medium channel is also communicated with the external part, and the medium-temperature evaporator or the thermal medium channel is also communicated; the expansion speed increaser is connected with the dual-energy compressor and transmits power, and the expansion machine, the second expansion machine, the internal combustion engine and the expansion speed increaser are connected with the outside and output power to form a combined cycle power device.

3. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, an internal combustion engine, a dual-energy compressor and an expansion speed increaser; the condenser is provided with a condensate pipeline which is communicated with the mixing evaporator through a circulating pump, the expansion speed increaser is provided with a steam channel which is communicated with the mixing evaporator through a medium temperature evaporator, the mixing evaporator is also provided with a steam channel which is respectively communicated with the dual-energy compressor and the expander, the dual-energy compressor is also provided with a steam channel which is communicated with the expansion speed increaser through a high temperature heat exchanger, the expander is also provided with a steam channel which is communicated with the condenser, the condenser is also provided with a condensate pipeline which is communicated with the medium temperature evaporator through a second circulating pump, then the medium temperature evaporator is provided with a steam channel which is communicated with a second expander, and the second expander is also provided with; the external part is provided with an air channel communicated with the internal combustion engine, the external part is also provided with a gaseous fuel channel communicated with the internal combustion engine through a compressor, the internal combustion engine is also provided with a fuel gas channel communicated with the external part through a high-temperature heat exchanger, the internal combustion engine is also provided with a cooling medium channel communicated with the external part, a condenser is also provided with a cooling medium channel communicated with the external part, a mixing evaporator or a thermal medium channel is also communicated with the external part, and a medium temperature evaporator or a thermal medium channel is also communicated; the internal combustion engine is connected with the compressor and transmits power, the expansion speed-increasing machine is connected with the dual-energy compressor and transmits power, and the expansion machine, the second expansion machine, the internal combustion engine and the expansion speed-increasing machine are connected with the outside and output power, so that the combined cycle power device is formed.

4. A combined cycle power plant, wherein a newly-added compressor and a newly-added high-temperature heat exchanger are added in any combined cycle power plant of items 2 to 3, a steam channel of the dual-energy compressor is communicated with an expansion speed increaser through the high-temperature heat exchanger to adjust that the dual-energy compressor is communicated with the newly-added compressor through the high-temperature heat exchanger, a steam channel of the newly-added compressor is communicated with the expansion speed increaser through the newly-added high-temperature heat exchanger, a gas channel of the internal combustion engine is communicated with the outside through the high-temperature heat exchanger to adjust that the internal combustion engine is communicated with the outside through the gas channel of the internal combustion engine and the newly-added high-temperature heat exchanger, and the expansion speed increaser is connected with the newly-added.

5. A combined cycle power plant, wherein a second dual-energy compressor and a newly increased high-temperature heat exchanger are added in any combined cycle power plant of items 2 to 3, the dual-energy compressor is communicated with an expansion speed increaser through a high-temperature heat exchanger, the dual-energy compressor is adjusted to be communicated with the expansion speed increaser through a steam channel, the dual-energy compressor is communicated with the second dual-energy compressor through the high-temperature heat exchanger, the second dual-energy compressor is communicated with the expansion speed increaser through a newly increased high-temperature heat exchanger, the internal combustion engine is communicated with the outside through a gas channel, the internal combustion engine is adjusted to be communicated with the outside through the high-temperature heat exchanger, the expansion speed increaser is connected with the second dual-energy compressor and transmits power, and the combined cycle.

6. A combined cycle power plant, wherein a newly added diffuser pipe and a newly added high temperature heat exchanger are added in any combined cycle power plant of items 2 to 3, the dual-energy compressor is communicated with the expansion speed increaser through the high temperature heat exchanger, the dual-energy compressor is adjusted to be communicated with the newly added diffuser pipe through the high temperature heat exchanger, the dual-energy compressor is communicated with the expansion speed increaser through the steam channel, the newly added diffuser pipe is communicated with the expansion speed increaser through the newly added high temperature heat exchanger, the internal combustion engine is communicated with the outside through the high temperature heat exchanger, and the internal combustion engine is adjusted to be communicated with the outside through the gas channel, the newly added high temperature heat exchanger and the high temperature heat exchanger, so.

7. A combined cycle power plant, wherein a new expansion machine and a new high temperature heat exchanger are added in any combined cycle power plant of items 2 to 3, a steam channel of a dual-energy compressor is communicated with an expansion speed increaser through the high temperature heat exchanger and adjusted to be communicated with the new expansion machine through the high temperature heat exchanger, a steam channel of the dual-energy compressor is communicated with the expansion speed increaser through the high temperature heat exchanger, a steam channel of the new expansion machine is communicated with the expansion speed increaser through the new high temperature heat exchanger, a gas channel of an internal combustion engine is communicated with the outside through the high temperature heat exchanger and adjusted to be communicated with the outside through the gas channel of the internal combustion engine, and the new expansion machine is connected with the outside and transmits power to form the combined cycle power plant.

8. A combined cycle power plant, which is characterized in that a second expansion speed increaser and a new high-temperature heat exchanger are added in any combined cycle power plant of items 2 to 3, a steam channel of a dual-energy compressor is communicated with the expansion speed increaser through the high-temperature heat exchanger and adjusted to be communicated with the second expansion speed increaser through the high-temperature heat exchanger, a steam channel of the second expansion speed increaser is communicated with the expansion speed increaser through the new high-temperature heat exchanger, a fuel gas channel of an internal combustion engine is communicated with the outside through the high-temperature heat exchanger and adjusted to be communicated with the outside through the new high-temperature heat exchanger and the high-temperature heat exchanger, and the second expansion speed increaser is connected with the outside and transmits power, thus forming the combined cycle power plant.

9. A combined cycle power plant, wherein a spray pipe and a newly-increased high-temperature heat exchanger are added in any combined cycle power plant of items 2 to 3, a steam channel of a dual-energy compressor is communicated with an expansion speed increaser through the high-temperature heat exchanger to adjust that the dual-energy compressor is communicated with the spray pipe through the high-temperature heat exchanger, the spray pipe is communicated with the expansion speed increaser through the newly-increased high-temperature heat exchanger, a gas channel of an internal combustion engine is communicated with the outside through the high-temperature heat exchanger to adjust that the internal combustion engine is communicated with the outside through the gas channel of the internal combustion engine and the newly-increased high-temperature heat exchanger, and the combined cycle power plant.

10. A combined cycle power device is characterized in that a high-temperature heat regenerator is added in any combined cycle power device in items 2-3, a steam channel of a dual-energy compressor is communicated with an expansion speed increaser through a high-temperature heat exchanger and adjusted to be communicated with the expansion speed increaser through the high-temperature heat regenerator and the high-temperature heat exchanger, a steam channel of the expansion speed increaser is communicated with a mixed evaporator through a medium-temperature evaporator and adjusted to be communicated with the mixed evaporator through the high-temperature heat regenerator and the medium-temperature evaporator, and the combined cycle power device is formed.

11. A combined cycle power plant, in any of the combined cycle power plants described in items 2-3, a high temperature heat regenerator, a newly-added compressor and a newly-added high temperature heat exchanger are added, a steam channel of the dual-energy compressor is communicated with an expansion speed increaser through the high temperature heat exchanger and is adjusted to be communicated with the newly-added compressor through the high temperature heat regenerator and the high temperature heat exchanger, a steam channel of the newly-added compressor is communicated with the expansion speed increaser through the newly-added high temperature heat exchanger, a steam channel of the expansion speed increaser is communicated with a mixing evaporator through a medium temperature evaporator and is adjusted to be communicated with the mixing evaporator through the high temperature heat regenerator and the medium temperature evaporator, a gas channel of the internal combustion engine is communicated with the outside through the high temperature heat exchanger and is adjusted to be communicated with the outside through the gas channel of the internal combustion engine through the newly-added high temperature heat exchanger, the expansion speed increaser is connected with the newly-increased compressor and transmits power to form a combined cycle power device.

12. A combined cycle power plant, which is characterized in that in any combined cycle power plant of items 2-3, a second dual-energy compressor, a high-temperature heat regenerator and a newly-increased high-temperature heat exchanger are added, a steam channel of the dual-energy compressor is communicated with an expansion speed increaser through the high-temperature heat exchanger and is adjusted to be communicated with the second dual-energy compressor through the high-temperature heat regenerator and the high-temperature heat exchanger, a steam channel of the second dual-energy compressor is communicated with the expansion speed increaser through the newly-increased high-temperature heat exchanger, a steam channel of the expansion speed increaser is communicated with a mixing evaporator through a medium-temperature evaporator, is adjusted to be communicated with the outside through the high-temperature heat regenerator and the medium-temperature evaporator, a gas channel of an internal combustion engine is communicated with the outside through the high-temperature heat exchanger and the newly-increased high-temperature heat exchanger, the expansion speed increaser is connected with the second dual-energy compressor and transmits power to form a combined cycle power device.

13. A combined cycle power plant, in any of the combined cycle power plants described in items 2-3, a high temperature heat regenerator, a newly-increased diffuser pipe and a newly-increased high temperature heat exchanger are added, a steam channel of a dual-energy compressor is communicated with an expansion speed increaser through the high temperature heat exchanger and is adjusted to be communicated with the newly-increased diffuser pipe through the high temperature heat regenerator and the high temperature heat exchanger, a steam channel of the newly-increased diffuser pipe is communicated with the expansion speed increaser through the newly-increased high temperature heat exchanger, a steam channel of the expansion speed increaser is communicated with a mixed evaporator through a medium temperature evaporator and is adjusted to be communicated with the mixed evaporator through the high temperature heat regenerator and the medium temperature evaporator, a gas channel of an internal combustion engine is communicated with the outside through the high temperature heat exchanger and is adjusted to be communicated with the outside through the gas channel of the internal combustion engine through the newly-increased high temperature heat, forming a combined cycle power plant.

14. A combined cycle power plant, in any of the combined cycle power plants described in items 2-3, a high temperature heat regenerator, a new expansion machine and a new high temperature heat exchanger are added, a steam channel of a dual-energy compressor is communicated with an expansion speed increaser through the high temperature heat exchanger and adjusted to be communicated with the new expansion machine through the high temperature heat regenerator and the high temperature heat exchanger, a steam channel of the new expansion machine is communicated with the expansion speed increaser through the new high temperature heat exchanger, a steam channel of the expansion speed increaser is communicated with a mixed evaporator through a medium temperature evaporator and adjusted to be communicated with a mixed evaporator through the high temperature heat regenerator and the medium temperature evaporator, a gas channel of an internal combustion engine is communicated with the outside through the high temperature heat exchanger and adjusted to be communicated with the outside through the gas channel of the internal combustion engine through the new high temperature heat exchanger and the high temperature heat exchanger, the new expansion machine is connected with the outside and transmits power to form a combined cycle power device.

15. A combined cycle power plant, which is characterized in that a second expansion speed increaser, a high-temperature heat regenerator and a new high-temperature heat exchanger are added in any combined cycle power plant of items 2 to 3, a steam channel of a dual-energy compressor is communicated with the expansion speed increaser through the high-temperature heat exchanger and is adjusted to be communicated with the second expansion speed increaser through the high-temperature heat regenerator and the high-temperature heat exchanger, a steam channel of the second expansion speed increaser is communicated with the expansion speed increaser through the new high-temperature heat exchanger, a steam channel of the expansion speed increaser is communicated with a mixing evaporator through a medium-temperature evaporator, is adjusted to be communicated with the mixing evaporator through the high-temperature heat regenerator and the medium-temperature evaporator, a gas channel of an internal combustion engine is communicated with the outside through the high-temperature heat exchanger and is adjusted to be communicated with the gas channel of the internal combustion engine through the new high-temperature heat exchanger, the second expansion speed increaser is connected with the outside and transmits power to form a combined cycle power device.

16. A combined cycle power plant, in any of the combined cycle power plants described in items 2-3, a spray pipe, a high-temperature heat regenerator and a newly-increased high-temperature heat exchanger are added, a steam channel of a dual-energy compressor is communicated with an expansion speed increaser through the high-temperature heat exchanger and is adjusted to be communicated with the high-temperature heat regenerator and the spray pipe, a steam channel of the spray pipe is communicated with the expansion speed increaser through the newly-increased high-temperature heat exchanger, a steam channel of the expansion speed increaser is communicated with a mixed evaporator through a medium-temperature evaporator and is adjusted to be communicated with the expansion speed increaser through the high-temperature heat regenerator and the medium-temperature evaporator, a gas channel of an internal combustion engine is communicated with the outside through the high-temperature heat exchanger and is adjusted to be communicated with the outside through a gas channel of the internal combustion engine through the newly-increased high-temperature heat.

17. A combined cycle power device is characterized in that a heat regenerator, a third circulating pump, a second heat regenerator and a fourth circulating pump are added in any combined cycle power device of items 1 to 16, a condenser with a condensate pipeline communicated with a mixed evaporator through the circulating pump is adjusted to be communicated with the heat regenerator through the circulating pump, a second expander is additionally provided with a steam extraction channel communicated with the heat regenerator, and the heat regenerator is further provided with a condensate pipeline communicated with the mixed evaporator through the third circulating pump; a condenser is adjusted to be communicated with the medium-temperature evaporator through a condensate pipeline of a second circulating pump, the condenser is adjusted to be communicated with a second heat regenerator through the second circulating pump through the condensate pipeline of the second circulating pump, a second steam extraction channel is additionally arranged on a second expansion machine to be communicated with the second heat regenerator, and the second heat regenerator is communicated with the medium-temperature evaporator through a condensate pipeline of a fourth circulating pump to form a combined cycle power device.

18. A combined cycle power plant, wherein a preheater and a second preheater are added in any combined cycle power plant described in items 1-16, a condenser with a condensate pipeline communicated with a mixed evaporator through a circulating pump is adjusted to be a condenser with a condensate pipeline communicated with the mixed evaporator through the circulating pump and the preheater, a condenser with a condensate pipeline communicated with a medium temperature evaporator through a second circulating pump is adjusted to be a condenser with a condensate pipeline communicated with the medium temperature evaporator through the second circulating pump and the second preheater, and the preheater and the second preheater are respectively communicated with the outside through a hot medium channel to form the combined cycle power plant.

19. A combined cycle power plant, in any of the combined cycle power plants described in item 18, wherein a condenser is provided with a condensate pipeline which is communicated with a mixed evaporator through a circulating pump and a preheater, and the condenser is provided with a condensate pipeline which is communicated with a medium temperature evaporator through a second circulating pump and a second preheater, the two ways are adjusted together to form the combined cycle power plant, wherein the condenser is provided with the condensate pipeline which is divided into two ways after passing through the circulating pump and the preheater, the first way is directly communicated with the mixed evaporator, and the second way is communicated with the medium temperature evaporator through the second circulating pump and the second preheater.

20. A combined cycle power plant, wherein an intermediate reheater is added to any one of the combined cycle power plants described in items 2-19, a medium temperature evaporator is adjusted to have a steam passage communicated with a second expander and a steam passage of the second expander communicated with a condenser, the medium temperature evaporator has a steam passage communicated with the second expander, the second expander also has an intermediate reheater steam passage communicated with the second expander through the intermediate reheater and the second expander also has a steam passage communicated with the condenser, and the intermediate reheater also has a heat medium passage communicated with the outside, thereby forming the combined cycle power plant.

21. A combined cycle power plant, wherein a second condenser is added in any combined cycle power plant described in items 2-16, a second expander is communicated with the condenser through a steam channel, the second expander is communicated with the second condenser through a steam channel, the condenser is communicated with a medium temperature evaporator through a second circulating pump, a condenser pipe is communicated with the medium temperature evaporator through a second circulating pump, the second condenser is communicated with the outside through a cooling medium channel, and the combined cycle power plant is formed.

22. A combined cycle power plant, in any of the combined cycle power plants described in items 2-20, a cooling medium channel communicated with the outside of an internal combustion engine is cancelled, a newly added circulating pump is added, a condensate pipeline is additionally arranged on a condenser, the condenser is communicated with the internal combustion engine through the newly added circulating pump, and then a steam channel of the internal combustion engine is communicated with an expander or a second expander to form the combined cycle power plant.

23. A combined cycle power plant, in any of the combined cycle power plants described in items 2-20, a cooling medium channel communicated with the outside of the internal combustion engine is cancelled, a newly added circulating pump and a newly added superheater are added, a condensate pipeline additionally arranged on a condenser is communicated with the internal combustion engine through the newly added circulating pump, then a steam channel of the internal combustion engine is communicated with an expander or a second expander through the newly added superheater, and a heat medium channel is communicated with the outside to form the combined cycle power plant.

24. A combined cycle power plant, wherein in any of the combined cycle power plants described in item 21, a cooling medium passage for communicating an internal combustion engine with the outside is eliminated, a newly added circulating pump is added, a condensate pipeline is additionally arranged on a second condenser, the second condenser is communicated with the internal combustion engine through the newly added circulating pump, and then a steam passage of the internal combustion engine is communicated with a second expander to form the combined cycle power plant.

25. A combined cycle power plant, wherein in any of the combined cycle power plants described in item 21, a cooling medium channel for communicating an internal combustion engine with the outside is eliminated, a newly added circulating pump and a newly added superheater are added, a condensate pipeline additionally arranged on a second condenser is communicated with the internal combustion engine through the newly added circulating pump, then a steam channel of the internal combustion engine is communicated with a second expander through the newly added superheater, and a heat medium channel of the newly added superheater is communicated with the outside, thereby forming the combined cycle power plant.

Description of the drawings:

FIG. 1 is a schematic 1 st thermodynamic system diagram of a combined cycle power plant according to the present invention.

FIG. 2 is a schematic thermodynamic system diagram of the 2 nd principle of a combined cycle power plant provided in accordance with the present invention.

FIG. 3 is a schematic thermodynamic system diagram of the 3 rd principle of a combined cycle power plant provided in accordance with the present invention.

FIG. 4 is a diagram of a 4 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.

FIG. 5 is a diagram of a 5 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.

FIG. 6 is a 6 th principal thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.

FIG. 7 is a 7 th principle thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.

FIG. 8 is a diagram of an 8 th principle thermodynamic system of a combined cycle power plant provided in accordance with the present invention.

FIG. 9 is a diagram of a 9 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.

FIG. 10 is a 10 th principal thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.

FIG. 11 is a diagram of a principal 11 thermodynamic system of a combined cycle power plant provided in accordance with the present invention.

FIG. 12 is a 12 th principle thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.

FIG. 13 is a 13 th principal thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.

FIG. 14 is a 14 th principle thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.

FIG. 15 is a diagram of a 15 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.

FIG. 16 is a 16 th principle thermodynamic system diagram of a combined cycle power plant provided in accordance with the present invention.

FIG. 17 is a diagram of a 17 th principal thermodynamic system of a combined cycle power plant provided in accordance with the present invention.

In the figure, 1-compressor, 2-diffuser pipe, 3-expander, 4-spray pipe, 5-second expander, 6-third expander, 7-circulating pump, 8-second circulating pump, 9-high temperature heat exchanger, 10-condenser, 11-mixed evaporator, 12-medium temperature evaporator, 13-internal combustion engine, 14-dual energy compressor, 15-expansion speed increaser, 16-second dual-energy compressor, 17-second expansion speed increaser, 18-high temperature regenerator, 19-regenerator, 20-third circulating pump, 21-second regenerator, 22-fourth circulating pump, 23-preheater, 24-second preheater, 25-intermediate reheater, 26-second condenser; a-a newly-added compressor, B-a newly-added high-temperature heat exchanger, C-a newly-added diffuser pipe, D-a newly-added expansion machine, F-a newly-added circulating pump and G-a newly-added superheater.

To clearly understand the spirit and scope of the present invention, the dual energy compressor, the expansion speed increaser and the related expansion machine are described as follows:

(1) the dual-energy compressor, a device for increasing the pressure of fluid by using the external mechanical energy and the kinetic energy of the fluid, is a combination of the compressor and a diffuser pipe or other devices with the same function.

(2) The expansion speed-increasing machine-under a certain pressure drop, it can implement double functions of pressure-reducing work-making and pressure-reducing speed-increasing, and is a combination body of expansion machine and jet tube or other equipment with identical function.

(3) The second expander 5 in fig. 1 and the expander 3 in fig. 2 to 17 convert the thermal energy of the steam into mechanical energy (pressure reduction work) and also convert the kinetic energy of the steam into mechanical energy (speed reduction work), which is different from the function of a general expander.

The specific implementation mode is as follows:

it is to be noted that, in the description of the structure and the flow, the repetition is not necessary; obvious flow is not described. The invention is described in detail below with reference to the figures and examples.

The combined cycle power plant shown in fig. 1 is implemented as follows:

(1) structurally, the system mainly comprises a compressor, a diffuser pipe, an expander, a spray pipe, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator and an internal combustion engine; the condenser 10 has a condensate pipeline communicated with a mixed evaporator 11 through a circulating pump 7, the expander 3 has a steam channel communicated with the mixed evaporator 11 through a spray pipe 4 and a medium temperature evaporator 12, the mixed evaporator 11 also has a steam channel communicated with the compressor 1 through a diffuser pipe 2 and directly communicated with a second expander 5, the compressor 1 also has a steam channel communicated with the expander 3 through a high temperature heat exchanger 9, the second expander 5 also has a steam channel communicated with the condenser 10, the condenser 10 also has a condensate pipeline communicated with the medium temperature evaporator 12 through a second circulating pump 8, then the medium temperature evaporator 12 has a steam channel communicated with a third expander 6, and the third expander 6 also has a steam channel communicated with the condenser 10; an air channel is arranged outside and communicated with the internal combustion engine 13, a fuel channel is also arranged outside and communicated with the internal combustion engine 13, the internal combustion engine 13 and a fuel gas channel are also communicated with the outside through the high-temperature heat exchanger 9, the internal combustion engine 13 and a cooling medium channel are also communicated with the outside, and the condenser 10 and the cooling medium channel are also communicated with the outside; the expander 3 is connected to the compressor 1 to transmit power, and the expander 3, the second expander 5, the third expander 6, and the internal combustion engine 13 are connected to the outside to output power.

(2) In the process, steam discharged by the compressor 1 flows through the high-temperature heat exchanger 9 and absorbs heat, flows through the expander 3 and performs pressure reduction and work, flows through the spray pipe 4 and performs pressure reduction and speed increase, flows through the medium-temperature evaporator 12 and performs heat release and temperature reduction, and then enters the mixing evaporator 11 to be mixed with condensate from the condenser 10 and performs heat release and temperature reduction; the condensate of the condenser 10 is divided into two paths, wherein the first path is pressurized by the circulating pump 7 and enters the mixing evaporator 11 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 8 and enters the medium temperature evaporator 12 to absorb heat and vaporize; the steam released by the mixed evaporator 11 is divided into two paths, wherein the first path flows through the diffuser pipe 2 to increase the pressure and the temperature and reduce the speed, then enters the compressor 1 to increase the pressure and the temperature, and the second path flows through the second expander 5 to reduce the pressure, work and reduce the speed, then enters the condenser 10 to release heat and condense; the steam released by the medium temperature evaporator 12 flows through the third expansion machine 6 to reduce the pressure and do work, and then enters the condenser 10 to release heat and condense; external fuel and air enter the internal combustion engine 13, a series of processes including combustion and expansion are completed in a cylinder of the internal combustion engine 13, fuel gas discharged by the internal combustion engine 13 passes through the high-temperature heat exchanger 9 to release heat and is discharged to the outside, and external cooling medium passes through the internal combustion engine 13 to absorb heat and then is discharged to the outside; the fuel provides driving heat load through combustion, the cooling medium takes away low-temperature heat load through the condenser 10, the expander 3 provides power for the compressor 1, and the expander 3, the second expander 5, the third expander 6 and the internal combustion engine 13 provide power outwards together to form a combined cycle power device.

The combined cycle power plant shown in fig. 2 is implemented as follows:

(1) structurally, the system mainly comprises an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, an internal combustion engine, a dual-energy compressor and an expansion speed increaser; the condenser 10 is provided with a condensate pipeline which is communicated with a mixing evaporator 11 through a circulating pump 7, an expansion speed increaser 15 is provided with a steam channel which is communicated with the mixing evaporator 11 through a medium temperature evaporator 12, the mixing evaporator 11 is also provided with a steam channel which is respectively communicated with a dual-energy compressor 14 and an expander 3, the dual-energy compressor 14 is also provided with a steam channel which is communicated with the expansion speed increaser 15 through a high temperature heat exchanger 9, the expander 3 is also provided with a steam channel which is communicated with the condenser 10, the condenser 10 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 12 through a second circulating pump 8, then the medium temperature evaporator 12 is provided with a steam channel which is communicated with a second expander 5, and the second expander 5 is also provided with a steam; an air channel is arranged outside and communicated with the internal combustion engine 13, a fuel channel is also arranged outside and communicated with the internal combustion engine 13, the internal combustion engine 13 and a fuel gas channel are also communicated with the outside through the high-temperature heat exchanger 9, the internal combustion engine 13 and a cooling medium channel are also communicated with the outside, and the condenser 10 and the cooling medium channel are also communicated with the outside; the expansion speed-increasing machine 15 is connected with the dual-energy compressor 14 and transmits power, and the expansion machine 3, the second expansion machine 5, the internal combustion engine 13 and the expansion speed-increasing machine 15 are connected with the outside and output power.

(2) In the process, steam discharged by the dual-energy compressor 14 flows through the high-temperature heat exchanger 9 and absorbs heat, flows through the expansion speed increaser 15 and performs pressure reduction and work doing, pressure reduction and speed increasing, flows through the medium-temperature evaporator 12 and performs heat release and temperature reduction, and then enters the mixing evaporator 11 to be mixed with condensate from the condenser 10 and performs heat release and temperature reduction; the condensate of the condenser 10 is divided into two paths, wherein the first path is pressurized by the circulating pump 7 and enters the mixing evaporator 11 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 8 and enters the medium temperature evaporator 12 to absorb heat and vaporize; the steam released by the mixing evaporator 11 enters a dual-energy compressor 14 to be pressurized, heated, decelerated and provided to the expansion machine 3 respectively; the steam flows through the expansion machine 3 to reduce pressure and work and reduce speed, and then enters the condenser 10 to release heat and condense; the steam released by the medium temperature evaporator 12 flows through the second expansion machine 5 to reduce the pressure and do work, and then enters the condenser 10 to release heat and condense; external fuel and air enter the internal combustion engine 13, a series of processes including combustion and expansion are completed in a cylinder of the internal combustion engine 13, fuel gas discharged by the internal combustion engine 13 passes through the high-temperature heat exchanger 9 to release heat and is discharged to the outside, and external cooling medium passes through the internal combustion engine 13 to absorb heat and then is discharged to the outside; the fuel provides driving heat load through combustion, the cooling medium takes away low-temperature heat load through the condenser 10, the expansion speed increaser 15 provides power for the dual-energy compressor 14, and the expansion machine 3, the second expansion machine 5, the internal combustion engine 13 and the expansion speed increaser 15 provide power outwards together to form a combined cycle power device.

The combined cycle power plant shown in fig. 3 is implemented as follows:

(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, an internal combustion engine, a dual-energy compressor and an expansion speed increaser; the condenser 10 is provided with a condensate pipeline which is communicated with a mixing evaporator 11 through a circulating pump 7, an expansion speed increaser 15 is provided with a steam channel which is communicated with the mixing evaporator 11 through a medium temperature evaporator 12, the mixing evaporator 11 is also provided with a steam channel which is respectively communicated with a dual-energy compressor 14 and an expander 3, the dual-energy compressor 14 is also provided with a steam channel which is communicated with the expansion speed increaser 15 through a high temperature heat exchanger 9, the expander 3 is also provided with a steam channel which is communicated with the condenser 10, the condenser 10 is also provided with a condensate pipeline which is communicated with the medium temperature evaporator 12 through a second circulating pump 8, then the medium temperature evaporator 12 is provided with a steam channel which is communicated with a second expander 5, and the second expander 5 is also provided with a steam; an air channel is arranged outside and communicated with an internal combustion engine 13, a gaseous fuel channel is arranged outside and communicated with the internal combustion engine 13 through a compressor 1, the internal combustion engine 13 and a fuel gas channel are communicated with the outside through a high-temperature heat exchanger 9, the internal combustion engine 13 and a cooling medium channel are communicated with the outside, a condenser 10 and a cooling medium channel are communicated with the outside, a mixing evaporator 11 and a heat medium channel are communicated with the outside, and a medium-temperature evaporator 12 and a heat medium channel are communicated with the outside; the internal combustion engine 13 is connected with the compressor 1 and transmits power, the expansion speed-increasing machine 15 is connected with the dual-energy compressor 14 and transmits power, and the expansion machine 3, the second expansion machine 5, the internal combustion engine 13 and the expansion speed-increasing machine 15 are connected with the outside and output power.

(2) In the process, steam discharged by the dual-energy compressor 14 flows through the high-temperature heat exchanger 9 and absorbs heat, flows through the expansion speed increaser 15 and performs pressure reduction and work doing, pressure reduction and speed increasing, flows through the medium-temperature evaporator 12 and performs heat release and temperature reduction, and then enters the mixing evaporator 11 to be mixed with condensate from the condenser 10 and performs heat release and temperature reduction; the condensate of the condenser 10 is divided into two paths, wherein the first path is pressurized by the circulating pump 7 and enters the mixing evaporator 11 to absorb heat and vaporize, and the second path is pressurized by the second circulating pump 8 and enters the medium temperature evaporator 12 to absorb heat and vaporize; the steam released by the mixing evaporator 11 enters a dual-energy compressor 14 to be pressurized, heated, decelerated and provided to the expansion machine 3 respectively; the steam flows through the expansion machine 3 to reduce pressure and work and reduce speed, and then enters the condenser 10 to release heat and condense; the steam released by the medium temperature evaporator 12 flows through the second expansion machine 5 to reduce the pressure and do work, and then enters the condenser 10 to release heat and condense; the external air enters the internal combustion engine 13, the external gaseous fuel enters the internal combustion engine 13 after being pressurized by the compressor 1, the air and the fuel complete a series of processes including combustion and expansion in a cylinder of the internal combustion engine 13, the fuel gas discharged by the internal combustion engine 13 passes through the high-temperature heat exchanger 9 to release heat and discharge, and the external cooling medium passes through the internal combustion engine 13 to absorb heat and then is discharged outwards; the fuel provides driving heat load through combustion, the heat medium, namely fuel gas after flowing through the high-temperature heat exchanger 9, other heat sources or heat source media capable of providing heat load, provides driving heat load through the mixing evaporator 11 and the medium-temperature evaporator 12, the cooling medium takes away low-temperature heat load through the condenser 10, the internal combustion engine 13 provides power for the compressor 1, the expansion speed increaser 15 provides power for the dual-energy compressor 14, and the expander 3, the second expander 5, the internal combustion engine 13 and the expansion speed increaser 15 jointly provide power for the outside to form a combined cycle power device.

The combined cycle power plant shown in fig. 4 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a newly added compressor and a newly added high-temperature heat exchanger are added, a steam channel of the dual-energy compressor 14 is communicated with the expansion speed increaser 15 through the high-temperature heat exchanger 9, the dual-energy compressor 14 is communicated with the newly added compressor A through the high-temperature heat exchanger 9, a steam channel of the newly added compressor A is communicated with the expansion speed increaser 15 through the newly added high-temperature heat exchanger B, a gas channel of the internal combustion engine 13 is communicated with the outside through the high-temperature heat exchanger 9, the internal combustion engine 13 is communicated with the outside through the newly added high-temperature heat exchanger B and the high-temperature heat exchanger 9, and the expansion speed increaser 15 is connected with the newly added compressor A and.

(2) Compared with the circulation flow of the combined cycle power plant shown in the figure 2, the difference is that the steam discharged by the dual-energy compressor 14 flows through the high-temperature heat exchanger 9 and absorbs heat, and then enters the newly-added compressor A to be boosted and heated; the steam discharged by the newly-increased compressor A flows through the newly-increased high-temperature heat exchanger B and absorbs heat, and then enters the expansion speed increaser 15 to reduce pressure, do work and increase pressure and speed; the gas discharged by the internal combustion engine 13 flows through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 9 to gradually release heat and is discharged to the outside, and the expansion speed increaser 15 provides power for the newly-added compressor A to form a combined cycle power device.

The combined cycle power plant shown in fig. 5 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a second dual-energy compressor and a newly-increased high-temperature heat exchanger are added, a steam channel of the dual-energy compressor 14 is communicated with the expansion speed increaser 15 through the high-temperature heat exchanger 9, the steam channel of the dual-energy compressor 14 is communicated with the second dual-energy compressor 16 through the high-temperature heat exchanger 9, a steam channel of the second dual-energy compressor 16 is communicated with the expansion speed increaser 15 through a newly-increased high-temperature heat exchanger B, a fuel gas channel of the internal combustion engine 13 is communicated with the outside through the high-temperature heat exchanger 9, the fuel gas channel of the internal combustion engine 13 is communicated with the outside through the newly-increased high-temperature heat exchanger B and the high-temperature heat exchanger 9, and the.

(2) Compared with the circulation flow of the combined cycle power plant shown in the figure 2, the difference is that the steam discharged by the dual-energy compressor 14 flows through the high-temperature heat exchanger 9 and absorbs heat, and then enters the second dual-energy compressor 16 to increase the pressure, raise the temperature and reduce the speed; the steam discharged by the second dual-function compressor 16 flows through the newly-added high-temperature heat exchanger B and absorbs heat, and then enters the expansion speed increaser 15 for pressure reduction and work doing and pressure reduction and speed increasing; the gas discharged by the internal combustion engine 13 flows through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 9 to gradually release heat and is discharged to the outside, and the expansion speed increaser 15 provides power for the second double-energy compressor 16 to form a combined cycle power device.

The combined cycle power plant shown in fig. 6 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a newly added diffuser and a newly added high temperature heat exchanger are added, the dual-energy compressor 14 is adjusted to have a steam passage communicated with the expansion speed increaser 15 through the high temperature heat exchanger 9, the dual-energy compressor 14 has a steam passage communicated with the newly added diffuser C through the high temperature heat exchanger 9, the newly added diffuser C has a steam passage communicated with the expansion speed increaser 15 through the newly added high temperature heat exchanger B, and the internal combustion engine 13 has a gas passage communicated with the outside through the high temperature heat exchanger 9, and the internal combustion engine 13 has a gas passage communicated with the outside through the newly added high temperature heat exchanger B and the high temperature heat exchanger 9.

(2) Compared with the circulation flow of the combined cycle power plant shown in FIG. 2, the difference is that the steam discharged by the dual-energy compressor 14 flows through the high-temperature heat exchanger 9 and absorbs heat, and then enters the newly added diffuser pipe C to increase the pressure, raise the temperature and reduce the speed; the steam discharged by the newly added diffuser pipe C flows through the newly added high-temperature heat exchanger B and absorbs heat, and then enters the expansion speed increaser 15 to reduce the pressure and do work and reduce the pressure and increase the speed; the fuel gas discharged by the internal combustion engine 13 flows through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 9 to gradually release heat and is discharged to the outside, so that a combined cycle power device is formed.

The combined cycle power plant shown in fig. 7 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a new expansion machine and a new high-temperature heat exchanger are added, a steam channel of the dual-energy compressor 14 is communicated with the expansion speed increaser 15 through the high-temperature heat exchanger 9, the steam channel of the dual-energy compressor 14 is communicated with the new expansion machine D through the high-temperature heat exchanger 9, the steam channel of the new expansion machine D is communicated with the expansion speed increaser 15 through the new high-temperature heat exchanger B, a gas channel of the internal combustion engine 13 is communicated with the outside through the high-temperature heat exchanger 9, the gas channel of the internal combustion engine 13 is communicated with the outside through the new high-temperature heat exchanger B and the high-temperature heat exchanger 9, and the new expansion machine D is connected with the outside and.

(2) Compared with the circulation flow of the combined cycle power plant shown in FIG. 2, the difference is that the steam discharged by the dual-energy compressor 14 flows through the high-temperature heat exchanger 9 and absorbs heat, and then enters the new expansion machine D to reduce pressure and do work; the steam discharged by the new expansion machine D flows through the new high-temperature heat exchanger B and absorbs heat, and then enters the expansion speed increaser 15 to reduce the pressure and do work and reduce the pressure and increase the speed; the gas discharged by the internal combustion engine 13 flows through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 9 to gradually release heat and is discharged to the outside, and the work output by the newly-added expansion machine D is output to the outside to form a combined cycle power device.

The combined cycle power plant shown in fig. 8 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a second expansion speed increaser and a new high-temperature heat exchanger are added, a steam channel of the dual-energy compressor 14 is communicated with the expansion speed increaser 15 through the high-temperature heat exchanger 9, the steam channel of the dual-energy compressor 14 is communicated with the second expansion speed increaser 17 through the high-temperature heat exchanger 9, the steam channel of the second expansion speed increaser 17 is communicated with the expansion speed increaser 15 through the new high-temperature heat exchanger B, a gas channel of the internal combustion engine 13 is communicated with the outside through the high-temperature heat exchanger 9, the gas channel of the internal combustion engine 13 is communicated with the outside through the new high-temperature heat exchanger B and the high-temperature heat exchanger 9, and the second expansion speed increaser 17 is connected.

(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 2, the difference is that the steam discharged by the dual-energy compressor 14 flows through the high-temperature heat exchanger 9 and absorbs heat, and then enters the second expansion speed increaser 17 to reduce the pressure and do work and increase the pressure and speed; the steam discharged by the second expansion speed increaser 17 flows through the newly-added high-temperature heat exchanger B and absorbs heat, and then enters the expansion speed increaser 15 to reduce pressure and do work and reduce pressure and increase speed; the gas discharged by the internal combustion engine 13 flows through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 9 to gradually release heat and is discharged outwards, and the work output by the second expansion speed increaser 17 is output outwards to form a combined cycle power device.

The combined cycle power plant shown in fig. 9 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a spray pipe and a new high temperature heat exchanger are added, a steam channel of the dual-energy compressor 14 is communicated with the expansion speed increaser 15 through the high temperature heat exchanger 9, the dual-energy compressor 14 is adjusted to be communicated with the spray pipe 4 through the steam channel of the high temperature heat exchanger 9, the spray pipe 4 is further communicated with the expansion speed increaser 15 through the new high temperature heat exchanger B, and the internal combustion engine 13 is communicated with the outside through the high temperature heat exchanger 9, the internal combustion engine 13 is adjusted to be communicated with the outside through the new high temperature heat exchanger B and the high temperature heat exchanger 9.

(2) Compared with the circulation flow of the combined cycle power plant shown in FIG. 2, the difference is that the steam discharged by the dual-energy compressor 14 flows through the high-temperature heat exchanger 9 and absorbs heat, and then enters the spray pipe 4 to be depressurized and accelerated; the steam discharged by the spray pipe 4 flows through the newly-added high-temperature heat exchanger B and absorbs heat, and then enters the expansion speed increaser 15 to reduce the pressure and do work and reduce the pressure and increase the speed; the fuel gas discharged by the internal combustion engine 13 flows through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 9 to gradually release heat and is discharged to the outside, so that a combined cycle power device is formed.

The combined cycle power plant shown in fig. 10 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a high temperature heat regenerator is added, a steam channel of the dual energy compressor 14 is communicated with the expansion speed increaser 15 through the high temperature heat exchanger 9 and adjusted to be communicated with the expansion speed increaser 15 through the high temperature heat regenerator 18 and the high temperature heat exchanger 9, a steam channel of the expansion speed increaser 15 is communicated with the hybrid evaporator 11 through the medium temperature evaporator 12 and adjusted to be communicated with the hybrid evaporator 11 through the high temperature heat regenerator 18 and the medium temperature evaporator 12.

(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 2, the difference in the flow is that the steam discharged from the dual-energy compressor 14 flows through the high-temperature heat regenerator 18 and the high-temperature heat exchanger 9 and absorbs heat gradually, flows through the expansion speed increaser 15 to reduce pressure and work, reduces pressure and increases speed, flows through the high-temperature heat regenerator 18 and the medium-temperature evaporator 12 to release heat gradually, and then enters the hybrid evaporator 11 to release heat and reduce temperature, thereby forming the combined cycle power plant.

The combined cycle power plant shown in FIG. 11 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a high temperature heat regenerator, a newly increased diffuser pipe and a newly increased high temperature heat exchanger are added, a steam channel of a dual-energy compressor 14 is communicated with an expansion speed increaser 15 through a high temperature heat exchanger 9 and is adjusted to be that the dual-energy compressor 14 is communicated with a newly increased diffuser pipe C through the high temperature heat regenerator 18 and the high temperature heat exchanger 9, the newly increased diffuser pipe C is communicated with the expansion speed increaser 15 through a steam channel of a newly increased high temperature heat exchanger B, the expansion speed increaser 15 is communicated with a mixed evaporator 11 through a medium temperature evaporator 12 and is adjusted to be that the expansion speed increaser 15 is communicated with the mixed evaporator 11 through the high temperature heat regenerator 18 and the medium temperature evaporator 12, the internal combustion engine 13 is adjusted to be communicated with the outside through the high-temperature heat exchanger 9, and the internal combustion engine 13 is adjusted to be communicated with the outside through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 9.

(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 2, the difference is that the steam discharged by the dual-energy compressor 14 flows through the high-temperature heat regenerator 18 and the high-temperature heat exchanger 9 and gradually absorbs heat, and then enters the newly added diffuser pipe C to increase the pressure, raise the temperature and reduce the speed; the steam discharged by the newly added diffuser pipe C flows through the newly added high-temperature heat exchanger B and absorbs heat, flows through the expansion speed increaser 15 to reduce the pressure and do work and reduce the pressure and increase the speed, flows through the high-temperature heat regenerator 18 and the medium-temperature evaporator 12 to gradually release heat and reduce the temperature, and then enters the mixing evaporator 11 to release heat and reduce the temperature; the fuel gas discharged by the internal combustion engine 13 flows through the newly-added high-temperature heat exchanger B and the high-temperature heat exchanger 9 to gradually release heat and is discharged to the outside, so that a combined cycle power device is formed.

The combined cycle power plant shown in fig. 12 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a heat regenerator, a third circulating pump, a second heat regenerator and a fourth circulating pump are added, a condensate pipeline of a condenser 10 is communicated with a mixed evaporator 11 through a circulating pump 7 and is adjusted to be that the condenser 10 is provided with a condensate pipeline which is communicated with a heat regenerator 19 through the circulating pump 7, a steam extraction channel is additionally arranged on a second expander 5 and is communicated with the heat regenerator 19, and the heat regenerator 19 is further provided with a condensate pipeline which is communicated with the mixed evaporator 11 through a third circulating pump 20; the condenser 10 is adjusted to have a condensate pipeline communicated with the medium temperature evaporator 12 through the second circulating pump 8, the condenser 10 has a condensate pipeline communicated with the second heat regenerator 21 through the second circulating pump 8, the second expander 5 is additionally provided with a second steam extraction channel communicated with the second heat regenerator 21, and the second heat regenerator 21 is communicated with the medium temperature evaporator 12 through a fourth circulating pump 22.

(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 2, the difference is that the condensate after the pressure of the condensate flowing through the circulating pump 7 enters the heat regenerator 19, and the condensate after the pressure of the condensate flowing through the second circulating pump 8 enters the second heat regenerator 21; the steam entering the second expander 5 is decompressed and works to a certain pressure, and then is divided into three paths, wherein the first path continues decompressing and works and enters the condenser 10, the second path enters the heat regenerator 19 through the steam extraction channel to be mixed with the condensate for heat release and condensation, and the third path enters the second heat regenerator 21 through the second steam extraction channel to be mixed with the condensate for heat release and condensation; the condensate of the heat regenerator 19 enters the mixing evaporator 11 after being boosted by the third circulating pump 20, and the condensate of the second heat regenerator 21 enters the medium-temperature evaporator 12 after being boosted by the fourth circulating pump 22, so that the combined cycle power device is formed.

The combined cycle power plant shown in fig. 13 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a preheater and a second preheater are added, a condensate pipeline of the condenser 10 is communicated with the mixing evaporator 11 through the circulating pump 7 and adjusted to be communicated with the mixing evaporator 11 through the circulating pump 7 and the preheater 23, a condensate pipeline of the condenser 10 is communicated with the mixing evaporator 11 through the circulating pump 7 and the medium temperature evaporator 12 through the second circulating pump 8, the condensate pipeline of the condenser 10 is adjusted to be communicated with the medium temperature evaporator 12 through the second circulating pump 8 and the second preheater 24, and the preheater 23 and the second preheater 24 are respectively communicated with the outside through a heat medium channel.

(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 2, the difference in the flow is that the first path of condensate of the condenser 10 enters the mixing evaporator 11 after flowing through the circulating pump 7 for pressure increase and flowing through the preheater 23 for heat absorption and temperature increase, and the second path of condensate of the condenser 10 enters the intermediate temperature evaporator 12 after flowing through the second circulating pump 8 for pressure increase and flowing through the second preheater 24 for heat absorption and temperature increase, so as to form the combined cycle power plant.

The combined cycle power plant shown in fig. 14 is implemented as follows:

(1) structurally, in the combined-cycle power plant shown in fig. 13, the condenser 10 is adjusted to have a condensate line communicated with the mixed evaporator 11 through the circulation pump 7 and the preheater 23 and a condensate line communicated with the medium temperature evaporator 12 through the second circulation pump 8 and the second preheater 24, and the condenser 10 is divided into two paths after having the condensate line passed through the circulation pump 7 and the preheater 23 — the first path is directly communicated with the mixed evaporator 11 and the second path is communicated with the medium temperature evaporator 12 through the second circulation pump 8 and the second preheater 24.

(2) In the process, compared with the circulation process of the combined cycle power plant shown in fig. 13, the difference lies in that the condensate of the condenser 10 is divided into two paths after passing through the circulating pump 7 for pressure increase and passing through the preheater 23 for heat absorption and temperature increase, the first path directly enters the hybrid evaporator 11, and the second path enters the medium temperature evaporator 12 after passing through the second circulating pump 8 for pressure increase and passing through the second preheater 24 for heat absorption and temperature increase, so as to form the combined cycle power plant.

The combined cycle power plant shown in fig. 15 is implemented as follows:

in the combined cycle power plant shown in fig. 2, an intermediate reheater is added, and the intermediate temperature evaporator 12 having a steam passage communicating with the second expander 5 and the second expander 5 having a steam passage communicating with the condenser 10 are adjusted such that the intermediate temperature evaporator 12 having a steam passage communicating with the second expander 5, the second expander 5 having an intermediate reheated steam passage communicating with the second expander 5 via the intermediate reheater 25 and the second expander 5 having a steam passage communicating with the condenser 10, and the intermediate reheater 25 having a heat medium passage communicating with the outside; when the steam entering the second expander 5 is decompressed and does work to a certain pressure, all the steam is led out and flows through the intermediate reheater 25 through the intermediate reheated steam channel to absorb heat and raise temperature, then enters the second expander 5 to be decompressed and does work continuously, and then enters the condenser 10 to release heat and condense to form the combined cycle power device.

The combined cycle power plant shown in fig. 16 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a second condenser is added, the second expander 5 is adjusted to have a steam passage to communicate with the condenser 10, the second expander 5 has a steam passage to communicate with the second condenser 26, the condenser 10 has a condensate pipeline to communicate with the medium temperature evaporator 12 through the second circulation pump 8, the second condenser 26 has a condensate pipeline to communicate with the medium temperature evaporator 12 through the second circulation pump 8, and the second condenser 26 also has a cooling medium passage to communicate with the outside.

(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 2, the difference in the flow is that the steam discharged from the second expander 5 enters the second condenser 26 to release heat to the cooling medium and condense, the condensate of the second condenser 26 flows through the second circulation pump 8 to increase the pressure, flows through the medium temperature evaporator 12 to absorb heat and vaporize, and then enters the second expander 5 to reduce the pressure and do work, thereby forming the combined cycle power plant.

The combined cycle power plant shown in fig. 17 is implemented as follows:

(1) structurally, in the combined cycle power plant shown in fig. 2, a cooling medium channel of the internal combustion engine 13 communicated with the outside is eliminated, a newly added circulating pump and a newly added superheater are added, a condensate pipeline is additionally arranged on the condenser 10, the condensate pipeline is communicated with the internal combustion engine 13 through the newly added circulating pump E, then a steam channel of the internal combustion engine 13 is communicated with the expander 3 through the newly added superheater F, and a heat medium channel of the newly added superheater F is communicated with the outside.

(2) Compared with the circulation flow of the combined cycle power plant shown in fig. 2, the difference in the flow is that the third path of condensate of the condenser 10 is supplied to the internal combustion engine 13 as circulating cooling liquid after being boosted by the newly added circulating pump E, is evaporated after absorbing heat, enters the expander 3 after being heated and absorbed by the newly added superheater F to be decompressed and work, and provides heat load to the newly added superheater F as a heat medium, i.e. fuel gas discharged by the internal combustion engine 13 or other heat source media, to form the combined cycle power plant.

The effect that the technology of the invention can realize-the combined cycle power device provided by the invention has the following effects and advantages:

(1) the dual-energy compressor replaces a main compressor, and the manufacturing difficulty and the manufacturing cost of the combined cycle power device are greatly reduced.

(2) The expansion speed increaser replaces a main expansion machine, so that the manufacturing difficulty and the manufacturing cost of the combined cycle power device are greatly reduced.

(3) The jet pipe or the expansion speed increaser replaces a common expansion machine, so that the manufacturing difficulty and the manufacturing cost of the combined cycle power device are effectively reduced.

(4) The diffuser pipe or the dual-energy compressor replaces a common compressor, and the manufacturing difficulty and the manufacturing cost of the combined cycle power device are effectively reduced.

(5) The simple components replace complex components, and the heat power change efficiency of the combined cycle power device is kept or improved.

(6) The complex parts are replaced by simple parts and simplified, which is beneficial to improving the safety and service life of the dynamic parts.

(7) A plurality of specific technical schemes are provided, and the device can be used for coping with a plurality of different actual conditions and has a wider application range.

(8) The combined cycle power plant technology is expanded, the types of the combined cycle power plant are enriched, the conversion of heat energy into mechanical energy is favorably realized, and the application range of the combined cycle power plant is expanded.

Claims

1. The combined cycle power device mainly comprises a compressor, a diffuser pipe, an expander, a spray pipe, a second expander, a third expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator and an internal combustion engine; the condenser (10) is provided with a condensate pipeline which is communicated with the mixed evaporator (11) through a circulating pump (7), the expander (3) is provided with a steam channel which is communicated with the mixed evaporator (11) through a spray pipe (4) and a medium temperature evaporator (12), the mixed evaporator (11) is also provided with a steam channel which is communicated with the compressor (1) through a diffuser pipe (2) and is directly communicated with the second expander (5), the compressor (1) is also provided with a steam channel which is communicated with the expander (3) through a high temperature heat exchanger (9), the second expander (5) is also provided with a steam channel which is communicated with the condenser (10), the condenser (10) is also provided with a condensate pipeline which is communicated with the medium temperature evaporator (12) through a second circulating pump (8), then the medium temperature evaporator (12) is also provided with a steam channel which is communicated with the third expander (6), and the third expander (6) is also provided with a steam channel which is communicated with the condenser (10); an air channel is arranged outside and communicated with an internal combustion engine (13), a fuel channel is arranged outside and communicated with the internal combustion engine (13), a fuel gas channel is also arranged outside and communicated with the outside through a high-temperature heat exchanger (9), a cooling medium channel is also arranged in the internal combustion engine (13) and communicated with the outside, a cooling medium channel is also arranged in the condenser (10) and communicated with the outside, a mixing evaporator (11) or a heat medium channel is also communicated with the outside, and a medium temperature evaporator (12) or a heat medium channel is also communicated with the outside; the expander (3) is connected with the compressor (1) and transmits power, and the expander (3), the second expander (5), the third expander (6) and the internal combustion engine (13) are connected with the outside and output power, so that the combined cycle power device is formed.

2. The combined cycle power device mainly comprises an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, an internal combustion engine, a dual-energy compressor and an expansion speed increaser; the condenser (10) is provided with a condensate pipeline which is communicated with the mixed evaporator (11) through a circulating pump (7), the expansion speed increaser (15) is provided with a steam channel which is communicated with the mixed evaporator (11) through a medium temperature evaporator (12), the mixed evaporator (11) is also provided with a steam channel which is respectively communicated with the dual-energy compressor (14) and the expander (3), the dual-energy compressor (14) is also provided with a steam channel which is communicated with the expansion speed increaser (15) through a high temperature heat exchanger (9), the expander (3) is also provided with a steam channel which is communicated with the condenser (10), the condenser (10) is also provided with a condensate pipeline which is communicated with the medium temperature evaporator (12) through a second circulating pump (8), then the medium temperature evaporator (12) is also provided with a steam channel which is communicated with the second expander (5), and the second expander (5) is also provided with a steam channel which is communicated with the; an air channel is arranged outside and communicated with an internal combustion engine (13), a fuel channel is arranged outside and communicated with the internal combustion engine (13), a fuel gas channel is also arranged outside and communicated with the outside through a high-temperature heat exchanger (9), a cooling medium channel is also arranged in the internal combustion engine (13) and communicated with the outside, a cooling medium channel is also arranged in the condenser (10) and communicated with the outside, a mixing evaporator (11) or a heat medium channel is also communicated with the outside, and a medium temperature evaporator (12) or a heat medium channel is also communicated with the outside; the expansion speed increasing machine (15) is connected with the dual-energy compressor (14) and transmits power, and the expansion machine (3), the second expansion machine (5), the internal combustion engine (13) and the expansion speed increasing machine (15) are connected with the outside and output power to form a combined cycle power device.

3. The combined cycle power device mainly comprises a compressor, an expander, a second expander, a circulating pump, a second circulating pump, a high-temperature heat exchanger, a condenser, a mixed evaporator, a medium-temperature evaporator, an internal combustion engine, a dual-energy compressor and an expansion speed increaser; the condenser (10) is provided with a condensate pipeline which is communicated with the mixed evaporator (11) through a circulating pump (7), the expansion speed increaser (15) is provided with a steam channel which is communicated with the mixed evaporator (11) through a medium temperature evaporator (12), the mixed evaporator (11) is also provided with a steam channel which is respectively communicated with the dual-energy compressor (14) and the expander (3), the dual-energy compressor (14) is also provided with a steam channel which is communicated with the expansion speed increaser (15) through a high temperature heat exchanger (9), the expander (3) is also provided with a steam channel which is communicated with the condenser (10), the condenser (10) is also provided with a condensate pipeline which is communicated with the medium temperature evaporator (12) through a second circulating pump (8), then the medium temperature evaporator (12) is also provided with a steam channel which is communicated with the second expander (5), and the second expander (5) is also provided with a steam channel which is communicated with the; an air channel is arranged outside and communicated with an internal combustion engine (13), a gaseous fuel channel is arranged outside and communicated with the internal combustion engine (13) through a compressor (1), a fuel gas channel is also arranged in the internal combustion engine (13) and communicated with the outside through a high-temperature heat exchanger (9), a cooling medium channel is also arranged in the internal combustion engine (13) and communicated with the outside, a cooling medium channel is also arranged in the condenser (10) and communicated with the outside, a mixing evaporator (11) or a heat medium channel is also communicated with the outside, and a medium-temperature evaporator (12) or a heat medium channel is also communicated with the outside; the internal combustion engine (13) is connected with the compressor (1) and transmits power, the expansion speed-increasing machine (15) is connected with the dual-energy compressor (14) and transmits power, and the expansion machine (3), the second expansion machine (5), the internal combustion engine (13) and the expansion speed-increasing machine (15) are connected with the outside and output power, so that the combined cycle power device is formed.

4. A combined cycle power plant, in any combined cycle power plant of claim 2-3, adding a new compressor and a new high temperature heat exchanger, adjusting the dual energy compressor (14) having a steam passage communicated with the expansion speed increaser (15) through the high temperature heat exchanger (9) to the dual energy compressor (14) having a steam passage communicated with the new compressor (A) through the high temperature heat exchanger (9), the new compressor (A) having a steam passage communicated with the expansion speed increaser (15) through the new high temperature heat exchanger (B), adjusting the internal combustion engine (13) having a gas passage communicated with the outside through the high temperature heat exchanger (9) to the internal combustion engine (13) having a gas passage communicated with the outside through the new high temperature heat exchanger (B) and the high temperature heat exchanger (9), the expansion speed increaser (15) being connected with the new compressor (A) and transmitting power, forming a combined cycle power plant.

5. A combined cycle power plant, which is characterized in that a second dual-energy compressor and a newly increased high-temperature heat exchanger are added in the combined cycle power plant of any one of claims 2 to 3, the dual-energy compressor (14) is communicated with an expansion speed increaser (15) through a high-temperature heat exchanger (9) to adjust that the dual-energy compressor (14) is communicated with the second dual-energy compressor (16) through a steam channel, the second dual-energy compressor (16) is further communicated with the expansion speed increaser (15) through a newly increased high-temperature heat exchanger (B), the internal combustion engine (13) is communicated with the outside through the high-temperature heat exchanger (9) to adjust that the internal combustion engine (13) is communicated with the outside through the newly increased high-temperature heat exchanger (B) and the high-temperature heat exchanger (9), the expansion speed increaser (15) is connected with the second dual-energy compressor (16) and transmits power, forming a combined cycle power plant.

6. A combined cycle power device is characterized in that a newly added diffuser pipe and a newly added high-temperature heat exchanger are added in any combined cycle power device of claims 2 to 3, a steam channel of a dual-energy compressor (14) is communicated with an expansion speed increaser (15) through a high-temperature heat exchanger (9) and adjusted to be communicated with a newly added diffuser pipe (C) through the high-temperature heat exchanger (9), a steam channel of the newly added diffuser pipe (C) is communicated with the expansion speed increaser (15) through a newly added high-temperature heat exchanger (B), a gas channel of an internal combustion engine (13) is communicated with the outside through the high-temperature heat exchanger (9) and adjusted to be communicated with the outside through the newly added high-temperature heat exchanger (B) and the high-temperature heat exchanger (9), and the combined cycle power device is formed.

7. A combined cycle power plant as claimed in any one of claims 2 to 3, a new expansion machine and a new high-temperature heat exchanger are added, a steam channel of a dual-energy compressor (14) is communicated with an expansion speed increasing machine (15) through a high-temperature heat exchanger (9) and adjusted to be communicated with the expansion speed increasing machine (15) through the steam channel of the dual-energy compressor (14) through the high-temperature heat exchanger (9), the steam channel of the new expansion machine (D) is communicated with the expansion speed increasing machine (15) through the new high-temperature heat exchanger (B), a gas channel of an internal combustion engine (13) is communicated with the outside through the high-temperature heat exchanger (9) and adjusted to be communicated with the outside through the gas channel of the internal combustion engine (13) through the new high-temperature heat exchanger (B) and the high-temperature heat exchanger (9), and the new expansion machine (D) is connected with the outside and transmits power to form a combined.

8. A combined cycle power plant, in any combined cycle power plant of claim 2-3, adding a second expansion speed increaser and a new high temperature heat exchanger, adjusting the dual-energy compressor (14) with a steam passage communicated with the expansion speed increaser (15) through the high temperature heat exchanger (9) to the dual-energy compressor (14) with a steam passage communicated with the second expansion speed increaser (17) through the high temperature heat exchanger (9), the second expansion speed increaser (17) with a steam passage communicated with the expansion speed increaser (15) through the new high temperature heat exchanger (B), adjusting the internal combustion engine (13) with a gas passage communicated with the outside through the high temperature heat exchanger (9) to the internal combustion engine (13) with a gas passage communicated with the outside through the new high temperature heat exchanger (B) and the high temperature heat exchanger (9), the second expansion speed increaser (17) connected with the outside and transmitting power, forming a combined cycle power plant.

9. A combined cycle power device is characterized in that a spray pipe and a new increased high-temperature heat exchanger are added in any combined cycle power device of claims 2-3, a steam channel of a dual-energy compressor (14) is communicated with an expansion speed increaser (15) through a high-temperature heat exchanger (9) and adjusted to be communicated with the spray pipe (4) through the high-temperature heat exchanger (9) and the steam channel of the dual-energy compressor (14), the steam channel of the spray pipe (4) is communicated with the expansion speed increaser (15) through a new increased high-temperature heat exchanger (B), a gas channel of an internal combustion engine (13) is communicated with the outside through the high-temperature heat exchanger (9) and adjusted to be communicated with the outside through the gas channel of the internal combustion engine (13) through the new increased high-temperature heat exchanger (B) and the high-temperature heat exchanger (.

10. A combined cycle power device is characterized in that a high-temperature regenerator is added in any combined cycle power device of claims 2-3, a steam channel of a dual-energy compressor (14) is communicated with an expansion speed increaser (15) through a high-temperature heat exchanger (9) and adjusted to be communicated with the expansion speed increaser (15) through the high-temperature regenerator (18) and the high-temperature heat exchanger (9), a steam channel of the expansion speed increaser (15) is communicated with a mixed evaporator (11) through a medium-temperature evaporator (12) and adjusted to be communicated with the mixed evaporator (11) through the high-temperature regenerator (18) and the medium-temperature evaporator (12), and the combined cycle power device is formed.

11. A combined cycle power device is characterized in that a high-temperature heat regenerator, a newly-increased compressor and a newly-increased high-temperature heat exchanger are added in any combined cycle power device of claims 2-3, a steam channel of a dual-energy compressor (14) is communicated with an expansion speed increaser (15) through a high-temperature heat exchanger (9) and is adjusted to be that the dual-energy compressor (14) is provided with a steam channel which is communicated with the newly-increased compressor (A) through the high-temperature heat regenerator (18) and the high-temperature heat exchanger (9), the newly-increased compressor (A) is further provided with a steam channel which is communicated with the expansion speed increaser (15) through a newly-increased high-temperature heat exchanger (B), the expansion speed increaser (15) is provided with a steam channel which is communicated with a hybrid evaporator (11) through a medium-temperature evaporator (12) and is adjusted to be that the expansion speed increaser (15) is provided with the hybrid evaporator (11) through the, the internal combustion engine (13) is adjusted to be communicated with the outside through a gas channel of the high-temperature heat exchanger (9) so that the internal combustion engine (13) is communicated with the outside through a newly-increased high-temperature heat exchanger (B) and the high-temperature heat exchanger (9), and the expansion speed increaser (15) is connected with the newly-increased compressor (A) and transmits power to form a combined cycle power device.

12. A combined cycle power device is characterized in that a second dual-energy compressor, a high-temperature regenerator and a newly increased high-temperature heat exchanger are added in any combined cycle power device of claims 2-3, a steam channel of the dual-energy compressor (14) is communicated with an expansion speed increaser (15) through the high-temperature heat exchanger (9) and is adjusted to be communicated with the second dual-energy compressor (16) through the high-temperature regenerator (18) and the high-temperature heat exchanger (9), a steam channel of the second dual-energy compressor (16) is communicated with the expansion speed increaser (15) through the newly increased high-temperature heat exchanger (B), a steam channel of the expansion speed increaser (15) is communicated with the hybrid evaporator (11) through a medium-temperature evaporator (12) and is adjusted to be communicated with the expansion speed increaser (15) through the high-temperature regenerator (18) and the medium-temperature evaporator (12) and is communicated with the hybrid evaporator (11), the internal combustion engine (13) is adjusted to be communicated with the outside through a gas channel of the high-temperature heat exchanger (9) so that the internal combustion engine (13) is communicated with the outside through a newly increased high-temperature heat exchanger (B) and the high-temperature heat exchanger (9), and the expansion speed increaser (15) is connected with the second dual-energy compressor (16) and transmits power to form a combined cycle power device.

13. A combined cycle power device is characterized in that a high-temperature heat regenerator, a newly-increased diffuser pipe and a newly-increased high-temperature heat exchanger are added in any combined cycle power device of claims 2 to 3, a steam channel of a dual-energy compressor (14) is communicated with an expansion speed increaser (15) through the high-temperature heat exchanger (9) and is adjusted to be communicated with a newly-increased diffuser pipe (C) through the high-temperature heat regenerator (18) and the high-temperature heat exchanger (9), a steam channel of the newly-increased diffuser pipe (C) is communicated with the expansion speed increaser (15) through the newly-increased high-temperature heat exchanger (B), a steam channel of the expansion speed increaser (15) is communicated with a mixed evaporator (11) through a medium-temperature evaporator (12) and is adjusted to be communicated with the mixed evaporator (11) through the high-temperature heat regenerator (18) and the medium-temperature evaporator (12), the internal combustion engine (13) is adjusted to be communicated with the outside through the high-temperature heat exchanger (9) by a gas channel, and the internal combustion engine (13) is communicated with the outside through the newly-added high-temperature heat exchanger (B) and the high-temperature heat exchanger (9), so that the combined cycle power device is formed.

14. A combined cycle power device is characterized in that a high-temperature regenerator, a new expansion machine and a new high-temperature heat exchanger are added in any combined cycle power device of claims 2-3, a steam channel of a dual-energy compressor (14) is communicated with an expansion speed increaser (15) through a high-temperature heat exchanger (9) and is adjusted to be communicated with the new expansion machine (D) through the high-temperature regenerator (18) and the high-temperature heat exchanger (9), a steam channel of the new expansion machine (D) is communicated with the expansion speed increaser (15) through the new high-temperature heat exchanger (B), a steam channel of the expansion speed increaser (15) is communicated with a mixed evaporator (11) through a medium-temperature evaporator (12) and is adjusted to be communicated with the mixed evaporator (11) through the high-temperature regenerator (18) and the medium-temperature evaporator (12), the internal combustion engine (13) is adjusted to be communicated with the outside through the high-temperature heat exchanger (9) by a gas channel, the internal combustion engine (13) is communicated with the outside through the newly-increased high-temperature heat exchanger (B) and the high-temperature heat exchanger (9), and the newly-increased expansion machine (D) is connected with the outside and transmits power to form a combined cycle power device.

15. A combined cycle power device is characterized in that a second expansion speed increaser, a high-temperature heat regenerator and a new high-temperature heat exchanger are added in any combined cycle power device of claims 2 to 3, a steam channel of a dual-energy compressor (14) is communicated with the expansion speed increaser (15) through the high-temperature heat exchanger (9) and is adjusted to be communicated with the second expansion speed increaser (17) through the high-temperature heat regenerator (18) and the high-temperature heat exchanger (9), a steam channel of the second expansion speed increaser (17) is communicated with the expansion speed increaser (15) through the new high-temperature heat exchanger (B), a steam channel of the expansion speed increaser (15) is communicated with a mixed evaporator (11) through a medium-temperature evaporator (12) and is adjusted to be communicated with the mixed evaporator (11) through the high-temperature heat regenerator (18) and the medium-temperature evaporator (12) and is communicated with the mixed evaporator (11) through the steam channel of the expansion speed increaser (15), the internal combustion engine (13) is adjusted to be communicated with the outside through the high-temperature heat exchanger (9) by a gas channel, the internal combustion engine (13) is communicated with the outside through the newly-increased high-temperature heat exchanger (B) and the high-temperature heat exchanger (9), and the second expansion speed increaser (17) is connected with the outside and transmits power to form a combined cycle power device.

16. A combined cycle power plant, in any combined cycle power plant of claims 2-3, a spray pipe, a high temperature regenerator and a newly-increased high temperature heat exchanger are added, a steam channel of a dual-energy compressor (14) is communicated with an expansion speed increaser (15) through the high temperature heat exchanger (9) and adjusted to be communicated with the spray pipe (4) through the high temperature regenerator (18) and the high temperature heat exchanger (9), a steam channel of the spray pipe (4) is communicated with the expansion speed increaser (15) through the newly-increased high temperature heat exchanger (B), a steam channel of the expansion speed increaser (15) is communicated with a mixing evaporator (11) through a medium temperature evaporator (12) and adjusted to be communicated with the expansion speed increaser (15) through the high temperature regenerator (18) and the medium temperature evaporator (12), a gas channel of an internal combustion engine (13) is communicated with the outside through the high temperature heat exchanger (9) and adjusted to be combusted for the internal combustion engine (13) The air channel is communicated with the outside through the newly-added high-temperature heat exchanger (B) and the high-temperature heat exchanger (9) to form a combined cycle power device.

17. A combined cycle power device is characterized in that a heat regenerator, a third circulating pump, a second heat regenerator and a fourth circulating pump are added in any combined cycle power device of claims 1 to 16, a condenser (10) is provided with a condensate pipeline which is communicated with a mixed evaporator (11) through a circulating pump (7) and is adjusted to be that the condenser (10) is provided with a condensate pipeline which is communicated with the heat regenerator (19) through the circulating pump (7), a steam extraction channel is additionally arranged on a second expansion machine (5) and is communicated with the heat regenerator (19), and the heat regenerator (19) is further provided with a condensate pipeline which is communicated with the mixed evaporator (11) through a third circulating pump (20); a condenser (10) is communicated with a medium-temperature evaporator (12) through a condensate pipeline of a second circulating pump (8) and adjusted to be that the condenser (10) is communicated with a second heat regenerator (21) through the second circulating pump (8), a second steam extraction channel is additionally arranged on a second expansion machine (5) and is communicated with the second heat regenerator (21), and the second heat regenerator (21) is communicated with the medium-temperature evaporator (12) through a condensate pipeline of a fourth circulating pump (22) to form a combined cycle power device.

18. A combined cycle power device is characterized in that a preheater and a second preheater are added in any combined cycle power device of claims 1 to 16, a condensate pipeline of a condenser (10) is communicated with a mixed evaporator (11) through a circulating pump (7) and is adjusted to be communicated with the mixed evaporator (11) through the circulating pump (7) and the preheater (23), a condensate pipeline of the condenser (10) is communicated with a medium temperature evaporator (12) through a second circulating pump (8) and the second preheater (24) and is adjusted to be communicated with the medium temperature evaporator (12), and the preheater (23) and the second preheater (24) are respectively communicated with the outside through a heat medium channel to form the combined cycle power device.

19. A combined cycle power plant, in any combined cycle power plant of claim 18, wherein a condenser (10) is provided with a condensate pipeline which is communicated with a mixed evaporator (11) through a circulating pump (7) and a preheater (23), and the condenser (10) is provided with a condensate pipeline which is communicated with a medium temperature evaporator (12) through a second circulating pump (8) and a second preheater (24), and the combined cycle power plant is formed by adjusting that the condenser (10) is provided with a condensate pipeline which is communicated with the mixed evaporator (11) directly after passing through the circulating pump (7) and the preheater (23), and the second pipeline is communicated with the medium temperature evaporator (12) through the second circulating pump (8) and the second preheater (24).

20. A combined cycle power plant, wherein an intermediate reheater is added to any one of the combined cycle power plants described in claims 2 to 19, and the intermediate temperature evaporator (12) having a steam passage communicating with the second expander (5) and the second expander (5) having a steam passage communicating with the condenser (10) is adjusted such that the intermediate temperature evaporator (12) having a steam passage communicating with the second expander (5), the second expander (5) and also an intermediate reheater steam passage communicating with the second expander (5) through the intermediate reheater (25), the second expander (5) and also a steam passage communicating with the condenser (10), and the intermediate reheater (25) and also a heat medium passage communicating with the outside, thereby forming the combined cycle power plant.

21. A combined cycle power plant, which is characterized in that in any combined cycle power plant of claims 2 to 16, a second condenser is added, a second expander (5) is communicated with the condenser (10) through a steam channel, the second expander (5) is communicated with the second condenser (26) through a steam channel, the condenser (10) is communicated with a medium temperature evaporator (12) through a second circulating pump (8) through a condensate pipeline, the second condenser (26) is communicated with the medium temperature evaporator (12) through the second circulating pump (8) through a condensate pipeline, and the second condenser (26) is also communicated with the outside through a cooling medium channel to form the combined cycle power plant.

22. A combined cycle power device is characterized in that in any combined cycle power device of claims 2-20, a cooling medium channel communicated with the outside of an internal combustion engine (13) is eliminated, a newly-added circulating pump is added, a condensate pipeline is additionally arranged on a condenser (10) and is communicated with the internal combustion engine (13) through the newly-added circulating pump (E), and then a steam channel of the internal combustion engine (13) is communicated with an expander (3) or a second expander (5) to form the combined cycle power device.

23. A combined cycle power device is characterized in that in any combined cycle power device of claims 2-20, a cooling medium channel of an internal combustion engine (13) communicated with the outside is cancelled, a newly added circulating pump and a newly added superheater are added, a condensate pipeline additionally arranged on a condenser (10) is communicated with the internal combustion engine (13) through the newly added circulating pump (E), then a steam channel of the internal combustion engine (13) is communicated with an expander (3) or a second expander (5) through the newly added superheater (F), and a heat medium channel of the newly added superheater (F) is communicated with the outside, so that the combined cycle power device is formed.

24. A combined cycle power plant, in any combined cycle power plant of claim 21, a cooling medium channel of the internal combustion engine (13) communicated with the outside is cancelled, a newly-added circulating pump is added, a condensate liquid pipeline is additionally arranged on the second condenser (26), the second condenser is communicated with the internal combustion engine (13) through the newly-added circulating pump (E), and then a steam channel of the internal combustion engine (13) is communicated with the second expander (5), so that the combined cycle power plant is formed.

25. A combined cycle power plant, in any combined cycle power plant of claim 21, a cooling medium channel of an internal combustion engine (13) communicated with the outside is cancelled, a newly added circulating pump and a newly added superheater are added, a condensate pipeline additionally arranged on a second condenser (26) is communicated with the internal combustion engine (13) through the newly added circulating pump (E), then a steam channel of the internal combustion engine (13) is communicated with a second expander (5) through the newly added superheater (F), and a heat medium channel of the newly added superheater (F) is communicated with the outside, so that the combined cycle power plant is formed.