CN114961900A - Double-working medium combined cycle power device - Google Patents

Abstract

The invention provides a double-working-medium combined cycle power device, belonging to the technical field of combined cycle heat. The condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a combustion chamber, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator; an air channel is arranged outside and is communicated with the combustion chamber through a compressor, a fuel channel is arranged outside and is communicated with the combustion chamber, a gas channel is arranged outside and is communicated with a gas turbine, and the gas channel is arranged outside and is communicated with the outside through an evaporator; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form a double-working-medium combined cycle power device.

Description

Double-working medium combined cycle power device

The technical field is as follows:

the invention belongs to the technical field of combined cycle heat.

Background art:

power demand is common in human life and production, where the conversion of thermal energy into mechanical energy is an important way to obtain and provide power. For high-temperature heat resources, a power device based on a single thermodynamic cycle is difficult to convert more heat energy into mechanical energy, and the loss of thermal variable work is large; therefore, it is desirable to construct a combined cycle to increase the thermal efficiency of the thermal power plant.

For an external combustion type steam power device with Rankine cycle as a theoretical basis, the temperature difference loss in the heat release process is small; however, due to the limitations of the temperature resistance, pressure resistance and safety of the material, a large temperature difference loss exists between the circulating working medium and the heat source, the irreversible loss is large, and the heat efficiency is low, which means that the potential for improving the heat efficiency is large. For thermodynamic devices based on the Brayton cycle theory, there are often conflicting requirements for power, thermal efficiency, and compression step-up ratio.

People need to simply, actively, safely, economically and efficiently utilize heat energy to obtain power, and therefore the invention provides a direct-combustion double-working-medium combined cycle power device which is high in heat efficiency, strong in safety, wide in power matching range and simple in structure.

The invention content is as follows:

the invention mainly aims to provide a double-working-medium combined cycle power device, and the specific contents of the invention are explained in the following sections:

1. the double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser and an evaporator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a combustion chamber, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator; an air channel is arranged outside and is communicated with the combustion chamber through a compressor, a fuel channel is arranged outside and is communicated with the combustion chamber, a gas channel is arranged outside and is communicated with a gas turbine, and the gas channel is arranged outside and is communicated with the outside through an evaporator; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form a double-working-medium combined cycle power device.

2. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a combustion chamber, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator; an air channel is arranged outside and is communicated with the combustion chamber through the compressor and the high-temperature heat regenerator, a fuel channel is also arranged outside and is communicated with the combustion chamber, a gas channel is also arranged outside and is communicated with the gas turbine, and the gas channel is also arranged outside and is communicated with the outside through the high-temperature heat regenerator and the evaporator; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form a double-working-medium combined cycle power device.

3. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a combustion chamber, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator; an air channel is arranged outside and is communicated with a combustion chamber through a compressor and a high-temperature heat regenerator, a fuel channel is also arranged outside and is communicated with the combustion chamber, a gas channel is arranged in the combustion chamber and is communicated with a gas turbine, then the gas channel is arranged in the gas turbine and is communicated with the gas turbine through the high-temperature heat regenerator, and the gas channel is also arranged in the gas turbine and is communicated with the outside through an evaporator; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form a double-working-medium combined cycle power device.

4. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a combustion chamber, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator; the external part of the compressor is communicated with an air channel, then the air channel of the compressor is communicated with the compressor through a high-temperature heat regenerator, the compressor is also communicated with a combustion chamber through an air channel, the external part of the compressor is also communicated with a fuel channel, the combustion chamber is also communicated with a gas turbine through a gas channel, and the gas turbine is also communicated with the external part through the high-temperature heat regenerator and an evaporator; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form a double-working-medium combined cycle power device.

5. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser is provided with a condensate pipeline which is communicated with the evaporator through a booster pump, then the evaporator is provided with a steam channel which is communicated with a steam turbine through a combustion chamber, and the steam turbine is also provided with a low-pressure steam channel which is communicated with the condenser through the evaporator; the external part of the gas turbine is communicated with the external part of the compressor through the high-temperature heat regenerator and then communicated with the compressor through the air channel; the condenser is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine is connected with the compressor and transmits power to form a double-working-medium combined cycle power device.

6. A dual working medium combined cycle power device is characterized in that in any one of the dual working medium combined cycle power devices 1-5, an expansion speed increaser is added to replace a steam turbine, a diffusion pipe is added to replace a booster pump, and the dual working medium combined cycle power device is formed.

Description of the drawings:

fig. 1 is a schematic thermodynamic system diagram of the 1 st embodiment of a dual-working-medium combined cycle power plant according to the present invention.

Fig. 2 is a schematic thermodynamic system diagram of a 2 nd principle of a dual-working-medium combined cycle power plant provided in accordance with the present invention.

Fig. 3 is a 3 rd principle thermodynamic system diagram of a dual-medium 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 dual-medium 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 dual-medium combined cycle power plant provided in accordance with the present invention.

Fig. 6 is a 6 th principle thermodynamic system diagram of a dual-medium combined cycle power plant provided in accordance with the present invention.

In the figure, 1-compressor, 2-gas turbine, 3-steam turbine, 4-booster pump, 5-combustion chamber (boiler), 6-condenser, 7-evaporator (waste heat boiler), 8-high temperature heat regenerator, 9-expansion speed increaser, and 10-diffuser pipe.

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 dual-mass combined cycle power plant shown in fig. 1 is realized by:

(1) structurally, the air conditioner mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser and an evaporator; the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then a steam channel of the evaporator 7 is communicated with the steam turbine 3 through the combustion chamber 5, and the steam turbine 3 is also provided with a low-pressure steam channel which is communicated with the condenser 6 through the evaporator 7; an air channel is arranged outside and is communicated with a combustion chamber 5 through a compressor 1, a fuel channel is also arranged outside and is communicated with the combustion chamber 5, a gas channel is also arranged outside and is communicated with a gas turbine 2, and the gas turbine 2 is also provided with a gas channel which is communicated with the outside through an evaporator 7; the condenser 6 is also communicated with the outside through a cooling medium channel, and the gas turbine 2 is connected with the compressor 1 and transmits power.

(2) In the process, the condensate of the condenser 6 enters the evaporator 7 after being boosted by the booster pump 4, absorbs heat, raises temperature and vaporizes, absorbs heat and raises temperature by flowing through the combustion chamber 5, reduces pressure and does work by flowing through the steam turbine 3, releases heat and lowers temperature by flowing through the evaporator 7, and then enters the condenser 6 to release heat and condense; external air flows through the compressor 1, is boosted in pressure and heated, then enters the combustion chamber 5, external fuel enters the combustion chamber 5, and the air and the fuel are mixed and combusted in the combustion chamber 5 to form high-temperature fuel gas; the gas in the combustion chamber 5 releases heat to the steam flowing through the combustion chamber, and then enters the gas turbine 2 to reduce the pressure and do work; the gas discharged by the gas turbine 2 is discharged and cooled through the evaporator 7 and then discharged to the outside; the fuel provides driving heat load through the combustion chamber 5, and the cooling medium takes away low-temperature heat load through the condenser 6; the gas turbine 2 and the steam turbine 3 power the compressor 1 and the outside, or the gas turbine 2 and the steam turbine 3 power the compressor 1, the booster pump 4 and the outside, forming a dual-working-medium combined cycle power plant.

The dual-mass combined cycle power plant shown in fig. 2 is realized by:

(1) structurally, the system mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then a steam channel of the evaporator 7 is communicated with the steam turbine 3 through the combustion chamber 5, and the steam turbine 3 is also provided with a low-pressure steam channel which is communicated with the condenser 6 through the evaporator 7; an air channel is arranged outside and is communicated with the combustion chamber 5 through the compressor 1 and the high-temperature heat regenerator 8, a fuel channel is also arranged outside and is communicated with the combustion chamber 5, a gas channel is also arranged outside and is communicated with the gas turbine 2, and the gas turbine 2 is also provided with a gas channel which is communicated with the outside through the high-temperature heat regenerator 8 and the evaporator 7; the condenser 6 is also communicated with the outside through a cooling medium channel, and the gas turbine 2 is connected with the compressor 1 and transmits power.

(2) In the process, the condensate of the condenser 6 is boosted by the booster pump 4 and then enters the evaporator 7, absorbs heat, is boosted and vaporized, absorbs heat, is boosted by the combustion chamber 5, reduces pressure and works by the steam turbine 3, releases heat and cools by the evaporator 7, and then enters the condenser 6 to release heat and condense; the external air flows through the compressor 1 to be boosted and heated, flows through the high-temperature heat regenerator 8 to absorb heat and be heated, and then enters the combustion chamber 5; external fuel enters the combustion chamber 5, air and the fuel are mixed and combusted in the combustion chamber 5 to be high-temperature fuel gas, the fuel gas in the combustion chamber 5 releases heat to steam flowing through the combustion chamber, and then the fuel gas enters the gas turbine 2 to reduce pressure and do work; the gas discharged by the gas turbine 2 flows through the high-temperature heat regenerator 8 and the evaporator 7 to gradually release heat and reduce temperature, and then is discharged outwards; the fuel provides driving heat load through the combustion chamber 5, and the cooling medium takes away low-temperature heat load through the condenser 6; the gas turbine 2 and the steam turbine 3 power the compressor 1 and the outside, or the gas turbine 2 and the steam turbine 3 power the compressor 1, the booster pump 4 and the outside, forming a dual-working-medium combined cycle power plant.

The dual-mass combined cycle power plant shown in fig. 3 is realized by:

(1) structurally, the system mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then a steam channel of the evaporator 7 is communicated with the steam turbine 3 through the combustion chamber 5, and the steam turbine 3 is also provided with a low-pressure steam channel which is communicated with the condenser 6 through the evaporator 7; an air channel is arranged outside and is communicated with a combustion chamber 5 through a compressor 1 and a high-temperature heat regenerator 8, a fuel channel is also arranged outside and is communicated with the combustion chamber 5, the combustion chamber 5 is also provided with a gas channel which is communicated with a gas turbine 2, then the gas turbine 2 is provided with a gas channel which is communicated with the combustion chamber through the high-temperature heat regenerator 8, and the gas turbine 2 is also provided with a gas channel which is communicated with the outside through an evaporator 7; the condenser 6 is also communicated with the outside through a cooling medium channel, and the gas turbine 2 is connected with the compressor 1 and transmits power.

(2) In the process, the condensate of the condenser 6 enters the evaporator 7 after being boosted by the booster pump 4, absorbs heat, raises temperature and vaporizes, absorbs heat and raises temperature by flowing through the combustion chamber 5, reduces pressure and does work by flowing through the steam turbine 3, releases heat and lowers temperature by flowing through the evaporator 7, and then enters the condenser 6 to release heat and condense; the external air flows through the compressor 1 to be boosted and heated, flows through the high-temperature heat regenerator 8 to absorb heat and be heated, and then enters the combustion chamber 5; external fuel enters the combustion chamber 5, air and fuel are mixed and combusted into high-temperature fuel gas in the combustion chamber 5, and the fuel gas in the combustion chamber 5 releases heat to steam flowing through the combustion chamber and then is supplied to the gas turbine 2; the gas entering the gas turbine 2 is decompressed and does work to a certain degree, then flows through the high-temperature heat regenerator 8 to release heat and reduce temperature, and enters the gas turbine 2 to continue to be decompressed and do work; the gas discharged from the gas turbine 2 is cooled by heat released from the evaporator 7 and then discharged to the outside; the fuel provides driving heat load through the combustion chamber 5, and the cooling medium takes away low-temperature heat load through the condenser 6; the gas turbine 2 and the steam turbine 3 power the compressor 1 and the outside, or the gas turbine 2 and the steam turbine 3 power the compressor 1, the booster pump 4 and the outside, forming a double-working-medium combined-cycle power plant.

The dual-mass combined cycle power plant shown in fig. 4 is realized by:

(1) structurally, the system mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then a steam channel of the evaporator 7 is communicated with the steam turbine 3 through the combustion chamber 5, and the steam turbine 3 is also provided with a low-pressure steam channel which is communicated with the condenser 6 through the evaporator 7; an air channel is arranged outside and communicated with the compressor 1, then the compressor 1 is further provided with an air channel which is communicated with the compressor 1 through a high-temperature heat regenerator 8, the compressor 1 is also provided with an air channel which is communicated with a combustion chamber 5, a fuel channel is also arranged outside and communicated with the combustion chamber 5, the combustion chamber 5 is also provided with a gas channel which is communicated with a gas turbine 2, and the gas turbine 2 is also provided with a gas channel which is communicated with the outside through the high-temperature heat regenerator 8 and an evaporator 7; the condenser 6 is also communicated with the outside through a cooling medium channel, and the gas turbine 2 is connected with the compressor 1 and transmits power.

(2) In the process, the condensate of the condenser 6 enters the evaporator 7 after being boosted by the booster pump 4, absorbs heat, raises temperature and vaporizes, absorbs heat and raises temperature by flowing through the combustion chamber 5, reduces pressure and does work by flowing through the steam turbine 3, releases heat and lowers temperature by flowing through the evaporator 7, and then enters the condenser 6 to release heat and condense; external air enters the compressor 1, is subjected to pressure rise and temperature rise to a certain degree, then flows through the high-temperature heat regenerator 8 to absorb heat and raise the temperature, enters the compressor 1 to continue to be subjected to pressure rise and temperature rise, and then enters the combustion chamber 5; external fuel enters the combustion chamber 5, air and the fuel are mixed and combusted in the combustion chamber 5 to be high-temperature fuel gas, the fuel gas in the combustion chamber 5 releases heat to steam flowing through the combustion chamber, and then the fuel gas enters the gas turbine 2 to reduce pressure and do work; the gas discharged by the gas turbine 2 flows through the high-temperature heat regenerator 8 and the evaporator 7 to gradually release heat and reduce temperature, and then is discharged outwards; the fuel provides driving heat load through the combustion chamber 5, and the cooling medium takes away low-temperature heat load through the condenser 6; the gas turbine 2 and the steam turbine 3 power the compressor 1 and the outside, or the gas turbine 2 and the steam turbine 3 power the compressor 1, the booster pump 4 and the outside, forming a dual-working-medium combined cycle power plant.

The dual-mass combined cycle power plant shown in fig. 5 is realized by:

(1) structurally, the system mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then a steam channel of the evaporator 7 is communicated with the steam turbine 3 through the combustion chamber 5, and the steam turbine 3 is also provided with a low-pressure steam channel which is communicated with the condenser 6 through the evaporator 7; the external air channel is communicated with the compressor 1, then the air channel of the compressor 1 is communicated with the compressor 1 through the high-temperature heat regenerator 8, the air channel of the compressor 1 is communicated with the combustion chamber 5, the external fuel channel is communicated with the combustion chamber 5, the combustion chamber 5 is also provided with a gas channel which is communicated with the gas turbine 2, then the gas channel of the gas turbine 2 is communicated with the compressor 2 through the high-temperature heat regenerator 8, and the gas channel of the gas turbine 2 is communicated with the external through the evaporator 7; the condenser 6 is also communicated with the outside through a cooling medium channel, and the gas turbine 2 is connected with the compressor 1 and transmits power.

(2) In the process, the condensate of the condenser 6 enters the evaporator 7 after being boosted by the booster pump 4, absorbs heat, raises temperature and vaporizes, absorbs heat and raises temperature by flowing through the combustion chamber 5, reduces pressure and does work by flowing through the steam turbine 3, releases heat and lowers temperature by flowing through the evaporator 7, and then enters the condenser 6 to release heat and condense; external air enters the compressor 1 to be boosted and heated to a certain degree, then flows through the high-temperature heat regenerator 8 to absorb heat and be heated, enters the compressor 1 to be boosted and heated continuously, and then enters the combustion chamber 5; external fuel enters the combustion chamber 5, air and fuel are mixed and combusted into high-temperature fuel gas in the combustion chamber 5, and the fuel gas in the combustion chamber 5 releases heat to steam flowing through the combustion chamber and then is supplied to the gas turbine 2; the gas entering the gas turbine 2 is decompressed to work to a certain degree, then flows through the high-temperature heat regenerator 8 to release heat and cool, and enters the gas turbine 2 to continue to be decompressed to work; the gas discharged by the gas turbine 2 is discharged and cooled through the evaporator 7 and then discharged to the outside; the fuel provides driving heat load through the combustion chamber 5, and the cooling medium takes away low-temperature heat load through the condenser 6; the gas turbine 2 and the steam turbine 3 power the compressor 1 and the outside, or the gas turbine 2 and the steam turbine 3 power the compressor 1, the booster pump 4 and the outside, forming a dual-working-medium combined cycle power plant.

The dual-medium combined cycle power plant shown in fig. 6 is realized by:

(1) structurally, in the dual-working-medium combined cycle power plant shown in fig. 2, an expansion speed-increasing machine 9 is added in place of the steam turbine 3, and a diffuser pipe 10 is added in place of the booster pump 4.

(2) In the process, the condensate of the condenser 6 enters the evaporator 7 after being subjected to speed reduction and pressure increase through the diffuser pipe 10, absorbs heat, increases the temperature and is vaporized, flows through the combustion chamber 5 to absorb heat, increases the temperature, flows through the expansion speed increaser 9 to reduce the pressure, does work and increases the speed, flows through the evaporator 7 to release heat and reduce the temperature, and then enters the condenser 6 to release heat and condense; the external air flows through the compressor 1 to be boosted and heated, flows through the high-temperature heat regenerator 8 to absorb heat and be heated, and then enters the combustion chamber 5; external fuel enters the combustion chamber 5, air and the fuel are mixed and combusted in the combustion chamber 5 to be high-temperature fuel gas, the fuel gas in the combustion chamber 5 releases heat to steam flowing through the combustion chamber, and then the fuel gas enters the gas turbine 2 to reduce pressure and do work; the gas discharged by the gas turbine 2 flows through the high-temperature heat regenerator 8 and the evaporator 7 to gradually release heat and reduce temperature, and then is discharged outwards; the fuel provides driving heat load through the combustion chamber 5, the cooling medium takes away low-temperature heat load through the condenser 6, and the gas turbine 2 and the expansion speed increaser 9 provide power for the compressor 1 and the outside to form a double-medium combined cycle power device.

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

(1) the heat absorption link has no temperature difference heat transfer loss during direct combustion, has small indirect heat absorption temperature difference loss, and is beneficial to improving the heat efficiency and the safety of the device.

(2) The cycle working medium is changed into heat at low temperature, the temperature difference loss in the heat release link is controllable, and the heat efficiency is improved.

(3) The independent turbine is arranged at the bottom in a circulating mode, the working medium flow and the turbine power can be flexibly selected, and the power matching range is large.

(4) On the premise of realizing high thermal efficiency, low-voltage operation can be selected, and the operation safety of the device is greatly improved.

(5) The bottom circulation can work in a subcritical, critical, supercritical or ultra-supercritical state, and reasonable heat power change efficiency is obtained.

(6) Provides a plurality of heat regeneration technical means, and effectively improves the coordination of the device in various aspects such as power, thermal efficiency, boosting ratio and the like.

(7) The Brayton cycle and the Rankine cycle jointly obtain high-temperature heat load, so that the load of the compressor is relatively reduced, and the amplitude is large; this is beneficial to improving the thermal efficiency, reducing the device cost and constructing a large-load double-working-medium combined cycle power device.

Claims (6)

1. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser and an evaporator; the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), then a steam channel of the evaporator (7) is communicated with the steam turbine (3) through the combustion chamber (5), and the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (6) through the evaporator (7); an air channel is arranged outside and is communicated with a combustion chamber (5) through a compressor (1), a fuel channel is also arranged outside and is communicated with the combustion chamber (5), the combustion chamber (5) is also provided with a gas channel and is communicated with a gas turbine (2), and the gas turbine (2) is also provided with a gas channel and is communicated with the outside through an evaporator (7); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine (2) is connected with the compressor (1) and transmits power to form a double-working-medium combined cycle power device.

2. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), then a steam channel of the evaporator (7) is communicated with the steam turbine (3) through the combustion chamber (5), and the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (6) through the evaporator (7); an air channel is arranged outside and is communicated with a combustion chamber (5) through a compressor (1) and a high-temperature heat regenerator (8), a fuel channel is also arranged outside and is communicated with the combustion chamber (5), the combustion chamber (5) is also provided with a gas channel which is communicated with a gas turbine (2), and the gas turbine (2) is also provided with a gas channel which is communicated with the outside through the high-temperature heat regenerator (8) and an evaporator (7); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine (2) is connected with the compressor (1) and transmits power to form a double-working-medium combined cycle power device.

3. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), then a steam channel of the evaporator (7) is communicated with the steam turbine (3) through the combustion chamber (5), and the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (6) through the evaporator (7); an air channel is arranged outside and is communicated with a combustion chamber (5) through a compressor (1) and a high-temperature heat regenerator (8), a fuel channel is also arranged outside and is communicated with the combustion chamber (5), the combustion chamber (5) is also provided with a gas channel which is communicated with a gas turbine (2), then the gas turbine (2) is further provided with a gas channel which is communicated with the gas turbine through the high-temperature heat regenerator (8), and the gas turbine (2) is also provided with a gas channel which is communicated with the outside through an evaporator (7); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, and the gas turbine (2) is connected with the compressor (1) and transmits power to form a double-working-medium combined cycle power device.

4. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), then a steam channel of the evaporator (7) is communicated with the steam turbine (3) through the combustion chamber (5), and the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (6) through the evaporator (7); an air channel is arranged outside and is communicated with the compressor (1), then the compressor (1) is communicated with the compressor (1) through a high-temperature heat regenerator (8) through another air channel, the compressor (1) is also communicated with a combustion chamber (5) through another air channel, a fuel channel is arranged outside and is communicated with the combustion chamber (5), the combustion chamber (5) is also communicated with a gas turbine (2) through another gas channel, and the gas turbine (2) is also communicated with the outside through the high-temperature heat regenerator (8) and an evaporator (7); the condenser (6) is also provided with a cooling medium channel communicated with the outside, and the gas turbine (2) is connected with the compressor (1) and transmits power to form a double-working-medium combined cycle power device.

5. The double-working medium combined cycle power plant mainly comprises a compressor, a gas turbine, a steam turbine, a booster pump, a combustion chamber, a condenser, an evaporator and a high-temperature heat regenerator; the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), then a steam channel of the evaporator (7) is communicated with the steam turbine (3) through the combustion chamber (5), and the steam turbine (3) is also provided with a low-pressure steam channel which is communicated with the condenser (6) through the evaporator (7); an air channel is arranged outside and is communicated with the compressor (1), then the compressor (1) is communicated with the compressor (1) through a high-temperature heat regenerator (8), the compressor (1) is also communicated with a combustion chamber (5) through an air channel, the outside is also communicated with the combustion chamber (5) through a fuel channel, the combustion chamber (5) is also communicated with a gas turbine (2) through a gas channel, then the gas turbine (2) is communicated with the compressor (2) through the high-temperature heat regenerator (8), and the gas turbine (2) is also communicated with the outside through an evaporator (7); the condenser (6) is also provided with a cooling medium channel communicated with the outside, and the gas turbine (2) is connected with the compressor (1) and transmits power to form a double-working-medium combined cycle power device.

6. A double-working medium combined cycle power device is formed by adding an expansion speed increaser (9) to replace a steam turbine (3) and adding a diffuser pipe (10) to replace a booster pump (4) in any one double-working medium combined cycle power device of claims 1 to 5.

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