CN117989090A

CN117989090A - Photo-thermal type multifunctional combined cycle steam power device with same single working medium

Info

Publication number: CN117989090A
Application number: CN202410132997.XA
Authority: CN
Inventors: 李华玉; 李鸿瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-29
Filing date: 2024-01-27
Publication date: 2024-05-07

Abstract

The invention provides a photo-thermal type multifunctional co-single-working-medium combined cycle steam power device, and belongs to the technical field of thermodynamics and thermal dynamics. The compressor is provided with a first steam channel which is communicated with the evaporator through the heat regenerator and the second expander, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is communicated with the heat source heat exchanger through the booster pump and the evaporator, the heat source heat exchanger is also provided with a steam channel which is communicated with the evaporator through the medium-temperature photo-thermal system, the second compressor, the high-temperature photo-thermal system, the expander and the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, wherein the first path is communicated with the compressor and the second path is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device.

Description

Photo-thermal type multifunctional combined cycle steam power device with same single working medium

Technical field:

the invention belongs to the technical field of thermodynamics and thermal dynamics.

The background technology is as follows:

Photo-thermal, conventional heat resources represented by industrial waste heat and geothermal heat can realize thermal work; different system devices are constructed by adopting the same or different thermal power principles, and corresponding construction cost is paid, so that the conversion of photo-thermal or conventional thermal resources into mechanical energy is realized; obviously, it is of positive significance to try to reduce the number of thermal power devices.

The device is limited by factors such as working principle, working medium property, material property, safety and the like, and the temperature difference irreversible loss exists in the power application process of light and heat; the heat efficiency of the conventional heat resource represented by industrial waste heat and geothermal heat is improved.

In order to increase the thermal efficiency, it is necessary to bring the circulating medium to as high a temperature as possible after the high-temperature load is obtained; however, at this time, the temperature of the circulating working medium discharged by the high-temperature expander is increased, the heat discharge is increased, and the heat transfer temperature difference loss in the thermodynamic system is increased, which has an adverse effect on the improvement of the heat-variable work efficiency.

The invention provides a photo-thermal type multifunctional carrying same single-working-medium combined cycle steam power device with reasonable thermodynamic perfection and high cost performance, which is based on the principle of simply, actively, safely and efficiently utilizing energy to obtain power, wherein cascade carrying is formed among high-temperature photo-thermal, medium-temperature photo-thermal and conventional heat resources, and the medium-temperature photo-thermal and the high-temperature photo-thermal or the conventional heat resources and the medium-temperature photo-thermal can be flexibly connected.

The invention comprises the following steps:

The invention mainly aims to provide a photo-thermal type multifunctional combined cycle steam power device with single working medium, and the specific invention is described as follows:

1. the photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor and a high-temperature photo-thermal system; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the high-temperature photo-thermal system through the medium-temperature photo-thermal system and the second compressor, the high-temperature photo-thermal system is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device; wherein, or the expander is connected with the compressor, the booster pump and the second compressor and transmits power.

2. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor and a high-temperature photo-thermal system; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the high-temperature photo-thermal system through the medium-temperature photo-thermal system and the second compressor, the high-temperature photo-thermal system is also provided with a steam channel which is communicated with the expander, the expander is further provided with a low-pressure steam channel which is communicated with the evaporator after being communicated with the expander through the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device; wherein, or the expander is connected with the compressor, the booster pump and the second compressor and transmits power.

3. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the high-temperature photo-thermal system through the medium-temperature photo-thermal system, the second compressor and the second heat regenerator, the high-temperature photo-thermal system is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the second heat regenerator and the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device; wherein, or the expander is connected with the compressor, the booster pump and the second compressor and transmits power.

4. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the high-temperature photo-thermal system through the medium-temperature photo-thermal system, the second heat regenerator and the second compressor, the high-temperature photo-thermal system is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the second heat regenerator and the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device; wherein, or the expander is connected with the compressor, the booster pump and the second compressor and transmits power.

5. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the high-temperature photo-thermal system through the second heat regenerator, the medium-temperature photo-thermal system and the second compressor, the high-temperature photo-thermal system is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the second heat regenerator and the heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device; wherein, or the expander is connected with the compressor, the booster pump and the second compressor and transmits power.

6. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the high-temperature photo-thermal system through the medium-temperature photo-thermal system, the second compressor and the second heat regenerator, the high-temperature photo-thermal system is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the heat regenerator after being communicated with the second heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device; wherein, or the expander is connected with the compressor, the booster pump and the second compressor and transmits power.

7. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the high-temperature photo-thermal system through the medium-temperature photo-thermal system, the second heat regenerator and the second compressor, the high-temperature photo-thermal system is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the heat regenerator after being communicated with the second heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device; wherein, or the expander is connected with the compressor, the booster pump and the second compressor and transmits power.

8. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor is provided with a first steam channel which is communicated with the second expander through the heat regenerator, the second expander is also provided with a low-pressure steam channel which is communicated with the evaporator, the compressor is also provided with a second steam channel which is communicated with the heat source heat exchanger, the condenser is provided with a condensate pipe which is communicated with the evaporator through the booster pump, then the evaporator is further provided with a steam channel which is communicated with the heat source heat exchanger, the heat source heat exchanger is also provided with a steam channel which is communicated with the high-temperature photo-thermal system through the second heat regenerator, the medium-temperature photo-thermal system and the second compressor, the high-temperature photo-thermal system is also provided with a steam channel which is communicated with the expander, the expander is also provided with a low-pressure steam channel which is communicated with the evaporator through the heat regenerator after being communicated with the second heat regenerator, and the evaporator is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor and a second path which is communicated with the condenser; the condenser is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger is also provided with a heat source medium channel which is communicated with the outside, the evaporator or the heat source medium channel is also communicated with the outside, and the expander is connected with the compressor and the second compressor and transmits power to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device; wherein, or the expander is connected with the compressor, the booster pump and the second compressor and transmits power.

9. The photo-thermal type multifunctional single-working-medium combined cycle steam power device in the 3 rd or 6 th aspect is characterized in that a second compressor with a steam channel is communicated with a high-temperature photo-thermal system through a second heat regenerator, and the second compressor with the steam channel is communicated with the high-temperature photo-thermal system after being adjusted to be communicated with the second heat regenerator through the second heat regenerator, so that the photo-thermal type multifunctional single-working-medium combined cycle steam power device is formed.

10. A photo-thermal type multifunctional single-working-medium combined cycle steam power device is characterized in that a second booster pump and a low-temperature heat regenerator are added in any one of the photo-thermal type multifunctional single-working-medium combined cycle steam power devices in the 1 st to the 9 th, a condenser condensate pipe is communicated with the booster pump and is adjusted to be communicated with the low-temperature heat regenerator through the second booster pump, a steam extraction channel is additionally arranged in the compressor and is communicated with the low-temperature heat regenerator, and a condensate pipe is further communicated with the booster pump to form the photo-thermal type multifunctional single-working-medium combined cycle steam power device.

11. The photo-thermal type multi-functional co-single-working-medium combined cycle steam power device is characterized in that in any one of the photo-thermal type multi-functional co-single-working-medium combined cycle steam power devices in the 1 st and the 3 th to the 9 th, a second evaporator and a diffusion pipe are added, the communication between a low-pressure steam channel of a regenerator and the evaporator is adjusted to be that the low-pressure steam channel of the regenerator is communicated with the second evaporator through the evaporator, the communication between the low-pressure steam channel of the second expander and the evaporator is adjusted to be that the low-pressure steam channel of the second expander is communicated with the second evaporator through the evaporator, the communication between the low-pressure steam channel of the evaporator and the compressor respectively is adjusted to be that the low-pressure steam channel of the second evaporator is respectively communicated with the compressor and the condenser, the condenser is adjusted to be that the condensate channel of the condenser is communicated with the second evaporator through the booster pump, and the diffusion pipe is further communicated with the second evaporator through the second evaporator, and the photo-thermal type multi-functional co-working-medium combined cycle steam power device is formed.

12. The photo-thermal type multi-energy co-single-working-medium combined cycle steam power device is characterized in that in the photo-thermal type multi-energy co-single-working-medium combined cycle steam power device in the 2 nd step, a second evaporator and a diffuser pipe are added, the communication between an expander with a low-pressure steam channel and the evaporator is adjusted to be that the expander with the low-pressure steam channel is communicated with the second evaporator through the evaporator, the communication between the second expander with the low-pressure steam channel and the evaporator is adjusted to be that the second expander with the low-pressure steam channel is respectively communicated with the compressor and the condenser, the communication between the condenser with a condensate pipe and the evaporator is adjusted to be that the condenser with the condensate pipe is communicated with the second evaporator through the booster pump, and then the second evaporator with a wet steam channel is communicated with the evaporator through the diffuser pipe, so that the photo-thermal type multi-energy co-working-medium combined cycle steam power device is formed.

13. The photo-thermal type multifunctional single-working-medium combined cycle steam power device is characterized in that in any one of the photo-thermal type multifunctional single-working-medium combined cycle steam power devices in the 1 st to 12 th, the positions of the medium-temperature photo-thermal system and the second compressor are interchanged to form the photo-thermal type multifunctional single-working-medium combined cycle steam power device.

14. The photo-thermal type multifunctional single-working-medium combined cycle steam power plant according to any one of the 1 to 13 th modes is characterized in that an expansion speed increaser is added and replaces the expansion machine, a second expansion speed increaser is added and replaces the second expansion machine, a dual-energy compressor is added and replaces the compressor, a newly added diffuser pipe and replaces the booster pump, a second dual-energy compressor is added and replaces the second compressor, and the photo-thermal type multifunctional single-working-medium combined cycle steam power plant is formed.

Description of the drawings:

Fig. 1 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the invention.

Fig. 2 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the invention.

FIG. 3 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the present invention.

Fig. 4 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the 4 th principle.

Fig. 5 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the invention.

FIG. 6 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the present invention.

FIG. 7 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the invention.

FIG. 8 is a schematic thermodynamic system diagram of an 8 th principle thermodynamic system of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the present invention.

FIG. 9 is a schematic thermodynamic system diagram of a 9 th principle of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the present invention.

FIG. 10 is a schematic diagram of a 10 th principle thermodynamic system of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the present invention.

FIG. 11 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the invention.

FIG. 12 is a schematic diagram of a 12 th principle thermodynamic system of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the present invention.

FIG. 13 is a schematic thermodynamic system diagram of a photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant according to the invention.

In the figure, a 1-expander, a 2-second expander, a 3-compressor, a 4-booster pump, a 5-regenerator, a 6-condenser, a 7-evaporator, an 8-heat source heat exchanger, a 9-medium temperature photo-thermal system, a 10-second compressor, an 11-high temperature photo-thermal system, a 12-second regenerator, a 13-second booster pump, a 14-low temperature regenerator, a 15-second evaporator and a 16-diffuser pipe are arranged; the system comprises an A-expansion speed increaser, a B-second expansion speed increaser, a C-dual-energy compressor, a D-newly added diffuser pipe and an E-second dual-energy compressor.

The following description is given here about photo-thermal, medium-temperature photo-thermal system and high-temperature photo-thermal system:

(1) The medium-temperature photo-thermal system, also called a solar heat supply system, is a heat supply system which converts solar radiation energy into high-temperature heat energy (photo-thermal for short) by utilizing a heat collector and can be used for providing driving heat load for a thermodynamic cycle system; it is mainly composed of heat collector and related necessary auxiliary facilities.

(2) The medium-temperature photo-thermal system and the high-temperature photo-thermal system in the application are divided into two types according to different temperature grades in the medium-temperature photo-thermal system; the former is low in temperature and the latter is high in temperature.

(3) Medium temperature photothermal systems in a broad sense include various systems that employ various means and devices to convert solar energy into thermal energy at different temperatures.

(4) Types of medium temperature photothermal systems include, but are not limited to: ① The light-focusing type medium-temperature photo-thermal system mainly comprises a groove type system, a tower type system and a butterfly type system at present; ② A non-light-collecting type medium-temperature photo-thermal system, which comprises a solar pond, a solar chimney and the like.

(5) The heat supply modes of the medium-temperature photo-thermal system are mainly two types at present: ① The intermediate temperature/high temperature heat energy converted by solar energy is directly provided for a circulating working medium flowing through an intermediate temperature photo-thermal system; ② The medium-temperature heat energy/high-temperature heat energy converted from solar energy is firstly provided for a working medium of a self-circulation loop, and then the working medium is provided for a circulation working medium flowing through a medium-temperature photo-thermal system through a heat exchanger.

The specific embodiment is as follows:

It is to be noted that the description of the structure and the flow is not repeated if necessary; obvious procedures are not described. The invention is described in detail below with reference to the drawings and examples.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 1 is realized by the following steps:

(1) Structurally, the system mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor and a high-temperature photo-thermal system; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the high-temperature photo-thermal system 11 through the medium-temperature photo-thermal system 9 and the second compressor 10, the high-temperature photo-thermal system 11 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is also provided with a low-pressure steam channel which is communicated with the evaporator 7 through the heat regenerator 5, and the evaporator 7 is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor 3 and a second path which is communicated with the condenser 6; the condenser 6 also has a cooling medium passage communicating with the outside, and the heat source heat exchanger 8 also has a heat source medium passage communicating with the outside, and the expander 1 connects the compressor 3 and the second compressor 10 and transmits power.

(2) In the flow, part of low-pressure steam discharged by the evaporator 7 enters the compressor 3 to be boosted and heated to a certain extent and then is divided into two paths, wherein the first path flows through the heat regenerator 5 to absorb heat and flows through the second expander 2 to perform depressurization and work and be provided for the evaporator 7, and the second path continuously boosts and heats and then enters the heat source heat exchanger 8 to absorb heat and heat; the condensate discharged by the condenser 6 is boosted by the booster pump 4, is heated and vaporized by the heat absorption of the evaporator 7, and then enters the heat source heat exchanger 8 to absorb heat and raise temperature; the steam discharged by the heat source heat exchanger 8 is subjected to heat absorption and temperature rise through the medium-temperature photo-thermal system 9, is subjected to pressure rise through the second compressor 10, is subjected to heat absorption and temperature rise through the high-temperature photo-thermal system 11, is subjected to pressure reduction and work through the expander 1, is subjected to heat release and temperature reduction through the heat regenerator 5, and is then provided for the evaporator 7; the low-pressure steam discharged by the heat regenerator 5 and the second expander 2 flows through the evaporator 7 to release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to raise the pressure and the temperature, and the second path enters the condenser 6 to release heat and condense; the heat source medium provides driving heat load through the heat source heat exchanger 8, the solar energy provides driving heat load through the medium-temperature photo-thermal system 9 and the high-temperature photo-thermal system 11, and the cooling medium takes away low-temperature heat load through the condenser 6; work output by the expander 1 and the second expander 2 is provided for the compressor 3, the second compressor 10 and external acting force, or work output by the expander 1 and the second expander 2 is provided for the compressor 3, the booster pump 4, the second compressor 10 and external acting force, so that the photo-thermal type multifunctional single-working-medium combined cycle steam power device is formed.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 2 is realized by the following steps:

(1) Structurally, the system mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor and a high-temperature photo-thermal system; the compressor 3 has the first steam channel to communicate with the second expander 2 through the regenerator 5, the second expander 2 has the low-pressure steam channel to communicate with evaporator 7, the compressor 3 has the second steam channel to communicate with heat source heat exchanger 8, the condenser 6 has condensate pipeline to communicate with evaporator 7 through booster pump 4, then evaporator 7 has steam channel to communicate with heat source heat exchanger 8, heat source heat exchanger 8 has steam channel to communicate with high-temperature photo-thermal system 11 through medium-temperature photo-thermal system 9 and second compressor 10, high-temperature photo-thermal system 11 has steam channel to communicate with expander 1, expander 1 has steam channel to communicate with oneself after the regenerator 5 has the low-pressure steam channel to communicate with evaporator 7 again, evaporator 7 has the low-pressure steam channel to divide into two ways-the first way communicates with compressor 3 and the second way communicates with condenser 6; the condenser 6 further has a cooling medium passage in communication with the outside, the heat source heat exchanger 8 further has a heat source medium passage in communication with the outside, the evaporator 7 or further has a heat source medium passage in communication with the outside, and the expander 1 connects the compressor 3 and the second compressor 10 and transmits power.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the steam discharged by the high-temperature photo-thermal system 11 enters the expander 1 to perform depressurization and work, flows through the regenerator 5 to release heat and cool to a certain extent, enters the expander 1 to continue depressurization and work, and then is provided for the evaporator 7 to form the photo-thermal type multifunctional single-working-medium combined cycle steam power device.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 3 is realized by the following steps:

(1) Structurally, the device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the high-temperature photo-thermal system 11 through the medium-temperature photo-thermal system 9, the second compressor 10 and the second heat regenerator 12, the high-temperature photo-thermal system 11 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is also provided with a low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor 3 and the second path is communicated with the condenser 6; the condenser 6 further has a cooling medium passage in communication with the outside, the heat source heat exchanger 8 further has a heat source medium passage in communication with the outside, the evaporator 7 or further has a heat source medium passage in communication with the outside, and the expander 1 connects the compressor 3 and the second compressor 10 and transmits power.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the steam discharged by the second compressor 10 is gradually absorbed in heat and increased in temperature through the second heat regenerator 12 and the high-temperature photo-thermal system 11, is subjected to depressurization and work through the expander 1, gradually releases heat and reduced in temperature through the second heat regenerator 12 and the heat regenerator 5, and is then supplied to the evaporator 7 to form the photo-thermal type multifunctional portable single-working-medium combined cycle steam power device.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 4 is realized by the following steps:

(1) Structurally, the device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the high-temperature photo-thermal system 11 through the medium-temperature photo-thermal system 9, the second heat regenerator 12 and the second compressor 10, the high-temperature photo-thermal system 11 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is also provided with a low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor 3 and the second path is communicated with the condenser 6; the condenser 6 further has a cooling medium passage in communication with the outside, the heat source heat exchanger 8 further has a heat source medium passage in communication with the outside, the evaporator 7 or further has a heat source medium passage in communication with the outside, and the expander 1 connects the compressor 3 and the second compressor 10 and transmits power.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: steam discharged by the medium-temperature photo-thermal system 9 flows through the second heat regenerator 12 to absorb heat and raise temperature, and then enters the second compressor 10 to raise pressure and raise temperature; the low-pressure steam discharged by the expander 1 flows through the second heat regenerator 12 and the heat regenerator 5 to release heat gradually and cool down, and then is supplied to the evaporator 7 to form the photo-thermal type multifunctional single-working-medium combined cycle steam power device.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 5 is realized by the following steps:

(1) Structurally, the device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the high-temperature photo-thermal system 11 through the second heat regenerator 12, the medium-temperature photo-thermal system 9 and the second compressor 10, the high-temperature photo-thermal system 11 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is also provided with a low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor 3 and the second path is communicated with the condenser 6; the condenser 6 further has a cooling medium passage in communication with the outside, the heat source heat exchanger 8 further has a heat source medium passage in communication with the outside, the evaporator 7 or further has a heat source medium passage in communication with the outside, and the expander 1 connects the compressor 3 and the second compressor 10 and transmits power.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the steam discharged by the heat source heat exchanger 8 flows through the second heat regenerator 12 to absorb heat and raise temperature, and then is supplied to the medium-temperature photo-thermal system 9; the low-pressure steam discharged by the expander 1 flows through the second heat regenerator 12 and the heat regenerator 5 to release heat gradually and cool down, and then is supplied to the evaporator 7 to form the photo-thermal type multifunctional single-working-medium combined cycle steam power device.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 6 is realized by the following steps:

(1) Structurally, the device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the high-temperature photo-thermal system 11 through the medium-temperature photo-thermal system 9, the second compressor 10 and the second heat regenerator 12, the high-temperature photo-thermal system 11 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is further provided with a low-pressure steam channel which is communicated with the evaporator 7 through the heat regenerator 5 after the steam channel is communicated with the expander 1, and the evaporator 7 is further provided with the low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor 3 and the second path is communicated with the condenser 6; the condenser 6 further has a cooling medium passage in communication with the outside, the heat source heat exchanger 8 further has a heat source medium passage in communication with the outside, the evaporator 7 or further has a heat source medium passage in communication with the outside, and the expander 1 connects the compressor 3 and the second compressor 10 and transmits power.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the steam discharged from the second compressor 10 is gradually absorbed in heat and increased in temperature through the second heat regenerator 12 and the high-temperature photo-thermal system 11, and then is supplied to the expander 1; the steam enters the expander 1 to perform decompression and work, flows through the second heat regenerator 12 to release heat and cool down to a certain extent, enters the expander 1 to continue decompression and work, flows through the heat regenerator 5 to release heat and cool down, and then is provided for the evaporator 7 to form the photo-thermal type multifunctional energy-carrying single-working-medium combined cycle steam power device.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 7 is realized by the following steps:

(1) Structurally, the device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the high-temperature photo-thermal system 11 through the medium-temperature photo-thermal system 9, the second heat regenerator 12 and the second compressor 10, the high-temperature photo-thermal system 11 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is further provided with a low-pressure steam channel which is communicated with the evaporator 7 through the heat regenerator 5 after the steam channel is communicated with the expander 1, and the evaporator 7 is further provided with the low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor 3 and the second path is communicated with the condenser 6; the condenser 6 further has a cooling medium passage in communication with the outside, the heat source heat exchanger 8 further has a heat source medium passage in communication with the outside, the evaporator 7 or further has a heat source medium passage in communication with the outside, and the expander 1 connects the compressor 3 and the second compressor 10 and transmits power.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: steam discharged by the medium-temperature photo-thermal system 9 flows through the second heat regenerator 12 to absorb heat and raise temperature, and is then provided for the second compressor 10; the steam discharged by the high-temperature photo-thermal system 11 enters the expander 1 to perform decompression and work, flows through the second heat regenerator 12 to release heat and reduce temperature to a certain extent, enters the expander 1 to continue decompression and work, flows through the heat regenerator 5 to release heat and reduce temperature, and then is supplied to the evaporator 7 to form the photo-thermal type multifunctional single-working medium combined cycle steam power device.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 8 is realized by the following steps:

(1) Structurally, the device mainly comprises an expander, a second expander, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor 3 is provided with a first steam channel which is communicated with the second expander 2 through the heat regenerator 5, the second expander 2 is also provided with a low-pressure steam channel which is communicated with the evaporator 7, the compressor 3 is also provided with a second steam channel which is communicated with the heat source heat exchanger 8, the condenser 6 is provided with a condensate pipeline which is communicated with the evaporator 7 through the booster pump 4, then the evaporator 7 is further provided with a steam channel which is communicated with the heat source heat exchanger 8, the heat source heat exchanger 8 is also provided with a steam channel which is communicated with the high-temperature photo-thermal system 11 through the second heat regenerator 12, the medium-temperature photo-thermal system 9 and the second compressor 10, the high-temperature photo-thermal system 11 is also provided with a steam channel which is communicated with the expander 1, the expander 1 is further provided with a low-pressure steam channel which is communicated with the evaporator 7 through the heat regenerator 5 after the steam channel is communicated with the expander 1, and the evaporator 7 is further provided with the low-pressure steam channel which is divided into two paths, namely, the first path is communicated with the compressor 3 and the second path is communicated with the condenser 6; the condenser 6 further has a cooling medium passage in communication with the outside, the heat source heat exchanger 8 further has a heat source medium passage in communication with the outside, the evaporator 7 or further has a heat source medium passage in communication with the outside, and the expander 1 connects the compressor 3 and the second compressor 10 and transmits power.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the steam discharged by the heat source heat exchanger 8 flows through the second heat regenerator 12 to absorb heat and raise temperature, and then is supplied to the medium-temperature photo-thermal system 9; the steam discharged by the high-temperature photo-thermal system 11 enters the expander 1 to perform decompression and work, flows through the second heat regenerator 12 to release heat and reduce temperature to a certain extent, enters the expander 1 to continue decompression and work, flows through the heat regenerator 5 to release heat and reduce temperature and is provided for the evaporator 7, and the photo-thermal type multifunctional single-working-medium combined cycle steam power device is formed.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 9 is realized by the following steps:

(1) Structurally, in the photo-thermal type multi-functional co-single-working-medium combined cycle steam power plant shown in fig. 3, a steam channel of the second compressor 10 is communicated with the high-temperature photo-thermal system 11 through the second heat regenerator 12, and the condition is that after the steam channel of the second compressor 10 is communicated with the photo-thermal system itself through the second heat regenerator 12, the steam channel of the second compressor 10 is communicated with the high-temperature photo-thermal system 11.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 3, the difference is that: the steam discharged by the medium-temperature photo-thermal system 9 enters the second compressor 10 to be boosted and heated, flows through the second heat regenerator 12 to absorb heat and heat to a certain extent, enters the second compressor 10 to be boosted and heated continuously, and then is supplied to the high-temperature photo-thermal system 11 to form the photo-thermal type multifunctional common-single-working-medium combined cycle steam power device.

The photo-thermal type multifunctional single-working-medium combined cycle steam power device shown in fig. 10 is realized by the following steps:

(1) Structurally, in the photo-thermal type multifunctional common-working-medium combined cycle steam power device shown in fig. 1, a second booster pump and a low-temperature heat regenerator are added, a condensate pipe of a condenser 6 is communicated with the booster pump 4, the condensate pipe of the condenser 6 is communicated with the low-temperature heat regenerator 14 through a second booster pump 13, a steam extraction channel is additionally arranged on the compressor 3 and is communicated with the low-temperature heat regenerator 14, and the condensate pipe of the low-temperature heat regenerator 14 is communicated with the booster pump 4.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the condensate discharged by the condenser 6 flows through the second booster pump 13 to be boosted and then enters the low-temperature regenerator 14 to be mixed with the extracted steam from the compressor 3, absorbs heat and heats up, and the extracted steam is released to form condensate; condensate of the low-temperature heat regenerator 14 flows through the booster pump 4 to boost pressure, and then enters the evaporator 7 to absorb heat to raise temperature and vaporize; the low-pressure steam discharged by the heat regenerator 5 and the second expander 2 flows through the evaporator 7 to release heat and cool, and then is divided into two paths, wherein the first path enters the compressor 3 to raise the pressure and the temperature, and the second path enters the condenser 6 to release heat and condense; the low-pressure steam enters the compressor 3 to be boosted and heated to a certain extent, and then is divided into two paths, namely a first path is provided for the low-temperature heat regenerator 14, and a second path is divided into two paths after the boosting and the heating are continued, namely the first path is provided for the heat regenerator 5 and the second path is provided for the heat source heat exchanger 8, so that the photo-thermal type multifunctional portable single-working-medium combined cycle steam power device is formed.

The photo-thermal type multifunctional combined cycle steam power plant with single working medium shown in fig. 11 is realized by the following steps:

(1) In the combined cycle steam power plant with photo-thermal type multi-functional and single working medium shown in fig. 1, a second evaporator and a diffuser pipe are added, the communication between a low-pressure steam channel of a heat regenerator 5 and an evaporator 7 is adjusted to be that the low-pressure steam channel of the heat regenerator 5 is communicated with a second evaporator 15 through the evaporator 7, the communication between the low-pressure steam channel of a second expander 2 and the evaporator 7 is adjusted to be that the low-pressure steam channel of the second expander 2 is communicated with the second evaporator 15 through the evaporator 7, the communication between the low-pressure steam channel of the evaporator 7 and a compressor 3 and a condenser 6 is respectively adjusted to be that the low-pressure steam channel of the second evaporator 15 is respectively communicated with the compressor 3 and the condenser 6, the communication between the condenser 6 and the condenser 6 is adjusted to be that the condensate channel of the condenser 6 is communicated with the second evaporator 15 through the booster pump 4, and the second evaporator 15 is further communicated with the evaporator 7 through the diffuser pipe 16.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the condensate discharged by the condenser 6 is boosted by the booster pump 4, is subjected to heat absorption and temperature rise, partial vaporization and speed increase by the second evaporator 15, is subjected to speed reduction and pressure boost by the diffuser pipe 16, and then enters the evaporator 7 to absorb heat and vaporization; low-pressure steam discharged by the heat regenerator 5 and the second expander 2 is gradually released and cooled through the evaporator 7 and the second evaporator 15, and then respectively enters the compressor 3 for boosting and heating and the condenser 6 for releasing heat and condensing, so that the photo-thermal type multifunctional single-working-medium combined cycle steam power device is formed.

The photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant shown in fig. 12 is realized by the following steps:

(1) Structurally, in the photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant shown in fig. 1, the positions of the intermediate-temperature photo-thermal system 9 and the second compressor 10 are interchanged in the photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant shown in fig. 1.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: the steam discharged by the heat source heat exchanger 8 is boosted and heated by the second compressor 10, is absorbed and heated by the medium-temperature photo-thermal system 9, and then enters the high-temperature photo-thermal system 11 to absorb and heat, so that the photo-thermal type multifunctional single-working-medium combined cycle steam power device is formed.

The photo-thermal type multi-energy co-single-working-medium combined cycle steam power plant shown in fig. 13 is realized by the following steps:

(1) Structurally, in the photo-thermal type multi-functional co-single-working-medium combined cycle steam power plant shown in fig. 1, an expansion speed increaser a is added and replaces the expansion machine 1, a second expansion speed increaser B is added and replaces the second expansion machine 2, a dual-energy compressor C is added and replaces the compressor 3, a newly added diffuser pipe D is added and replaces the booster pump 4, and a second dual-energy compressor E is added and replaces the second compressor 10.

(2) In the flow, compared with the photo-thermal type multifunctional single-working-medium combined cycle steam power plant shown in fig. 1, the difference is that: part of low-pressure steam discharged by the evaporator 7 enters the dual-energy compressor C to be boosted, heated and decelerated to a certain extent and then is divided into two paths, wherein the first path flows through the heat regenerator 5 to absorb heat and heat, flows through the second expansion speed increaser B to be decompressed, work and speed-up and provided for the evaporator 7, and the second path continuously boosts, heats and then enters the heat source heat exchanger 8 to absorb heat and heat; condensate discharged by the condenser 6 flows through the newly added diffuser pipe D to be reduced in speed and boosted, flows through the evaporator 7 to absorb heat and evaporate, and then enters the heat source heat exchanger 8 to absorb heat and raise temperature; the steam discharged by the heat source heat exchanger 8 is subjected to heat absorption and temperature rise through the medium-temperature photo-thermal system 9, is subjected to pressure rise and temperature rise through the second dual-energy compressor E and speed reduction, is subjected to heat absorption and temperature rise through the high-temperature photo-thermal system 11, is subjected to pressure reduction and speed reduction through the expansion speed increaser A, is subjected to heat release and temperature reduction through the heat regenerator 5, and is then provided for the evaporator 7; the low-pressure steam discharged by the heat regenerator 5 and the second expansion speed increaser B flows through the evaporator 7 to release heat and cool, and then is divided into two paths, wherein the first path enters the dual-energy compressor C to raise the pressure and raise the temperature and reduce the speed, and the second path enters the condenser 6 to release heat and condense; the work output by the expansion speed increaser A and the second expansion speed increaser B is provided for the double-energy compressor C, the second double-energy compressor E and external acting force to form the photo-thermal type multi-energy co-single working medium combined cycle steam power device.

The photo-thermal type multifunctional single-working-medium combined cycle steam power device has the following effects and advantages:

(1) The high-temperature photo-thermal system, the medium-temperature photo-thermal system and the conventional heat resource share the integrated thermal power system, so that the construction cost of the thermal power system is saved, and the cost performance is high.

(2) The high-temperature photo-thermal, medium-temperature photo-thermal and conventional heat resources are provided for driving the thermal load link, so that the temperature difference loss is small, and the thermodynamic perfection is high.

(3) The conventional heat resource plays a larger role by means of medium-temperature photo-thermal, and the utilization value of photo-thermal conversion into mechanical energy is obviously improved.

(4) The medium-temperature photo-thermal plays a larger role by means of the high-temperature photo-thermal, and the utilization value of the conversion of the high-temperature photo-thermal into mechanical energy is obviously improved.

(5) The cross grade carrying is realized between the medium temperature photo-thermal and the high temperature photo-thermal or between the conventional heat resource and the medium temperature photo-thermal, the connection is flexible, and the thermodynamic perfection is high.

(6) The driving heat load realizes graded utilization in the single-working-medium combined cycle, obviously reduces irreversible loss of temperature difference, and has high heat-changing work efficiency and thermodynamic perfection.

(7) The conventional heat resource can be used for or is beneficial to reducing the pressure boosting ratio of the combined cycle, improving the flow of the circulating working medium and being beneficial to constructing a large-load photo-thermal type multifunctional single-working-medium combined cycle steam power device.

(8) The utilization degree of the temperature difference in the back heating link between gases (steam) is high, and the heat-changing work efficiency is improved; and in the regenerative link between the gas (steam) working medium and the liquid working medium, the flow rate of the gas working medium is large, the temperature change interval is relatively narrow, the irreversible loss of the temperature difference is reduced, and the heat-variable work efficiency is improved.

(9) By utilizing the characteristics of working media, the temperature difference utilization level in the heat transfer process is improved by adopting a simple technical means, and the heat efficiency is improved.

(10) And a plurality of heat regeneration technical means are provided, so that the coordination of the device in the aspects of power, thermal efficiency, step-up ratio and the like is effectively improved.

(11) The flow is reasonable, the structure is simple, and the scheme is rich; the method is beneficial to improving the reasonable utilization level of energy and expanding the application range of the photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device.

Claims

1. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor and a high-temperature photo-thermal system; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the high-temperature photo-thermal system (11) through the medium-temperature photo-thermal system (9) and the second compressor (10), the high-temperature photo-thermal system (11) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor (3) and a second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, the evaporator (7) or the heat source medium channel is also communicated with the outside, and the expander (1) is connected with the compressor (3) and the second compressor (10) and transmits power to form a photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3), the booster pump (4) and the second compressor (10) and transmits power.

2. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expander, a second expander, a compressor, a booster pump, a regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor and a high-temperature photo-thermal system; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the high-temperature photo-thermal system (11) through the medium-temperature photo-thermal system (9) and the second compressor (10), the high-temperature photo-thermal system (11) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) after the heat regenerator (5) is communicated with the evaporator (7), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths-the first path which is communicated with the compressor (3) and the second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, the evaporator (7) or the heat source medium channel is also communicated with the outside, and the expander (1) is connected with the compressor (3) and the second compressor (10) and transmits power to form a photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3), the booster pump (4) and the second compressor (10) and transmits power.

3. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the high-temperature photo-thermal system (11) through the medium-temperature photo-thermal system (9), the second compressor (10) and the second heat regenerator (12), the high-temperature photo-thermal system (11) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the second heat regenerator (12) and the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor (3) and a second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, the evaporator (7) or the heat source medium channel is also communicated with the outside, and the expander (1) is connected with the compressor (3) and the second compressor (10) and transmits power to form a photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3), the booster pump (4) and the second compressor (10) and transmits power.

4. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the high-temperature photo-thermal system (11) through the medium-temperature photo-thermal system (9), the second heat regenerator (12) and the second compressor (10), the high-temperature photo-thermal system (11) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the second heat regenerator (12) and the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths-a first path which is communicated with the compressor (3) and a second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, the evaporator (7) or the heat source medium channel is also communicated with the outside, and the expander (1) is connected with the compressor (3) and the second compressor (10) and transmits power to form a photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3), the booster pump (4) and the second compressor (10) and transmits power.

5. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the high-temperature photo-thermal system (11) through the second heat regenerator (12), the medium-temperature photo-thermal system (9) and the second compressor (10), the high-temperature photo-thermal system (11) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the second heat regenerator (12) and the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely the first path is communicated with the compressor (3) and the second path is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, the evaporator (7) or the heat source medium channel is also communicated with the outside, and the expander (1) is connected with the compressor (3) and the second compressor (10) and transmits power to form a photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3), the booster pump (4) and the second compressor (10) and transmits power.

6. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the high-temperature photo-thermal system (11) through the medium-temperature photo-thermal system (9), the second compressor (10) and the second heat regenerator (12), the high-temperature photo-thermal system (11) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely the first path which is communicated with the compressor (3) and the second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, the evaporator (7) or the heat source medium channel is also communicated with the outside, and the expander (1) is connected with the compressor (3) and the second compressor (10) and transmits power to form a photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3), the booster pump (4) and the second compressor (10) and transmits power.

7. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the high-temperature photo-thermal system (11) through the medium-temperature photo-thermal system (9), the second heat regenerator (12) and the second compressor (10), the high-temperature photo-thermal system (11) is also provided with a steam channel which is communicated with the expander (1), and the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the heat regenerator (5), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely the first path which is communicated with the compressor (3) and the second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, the evaporator (7) or the heat source medium channel is also communicated with the outside, and the expander (1) is connected with the compressor (3) and the second compressor (10) and transmits power to form a photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3), the booster pump (4) and the second compressor (10) and transmits power.

8. The photo-thermal type multifunctional single-working-medium combined cycle steam power device mainly comprises an expansion machine, a second expansion machine, a compressor, a booster pump, a heat regenerator, a condenser, an evaporator, a heat source heat exchanger, a medium-temperature photo-thermal system, a second compressor, a high-temperature photo-thermal system and a second heat regenerator; the compressor (3) is provided with a first steam channel which is communicated with the second expander (2) through the heat regenerator (5), the second expander (2) is also provided with a low-pressure steam channel which is communicated with the evaporator (7), the compressor (3) is also provided with a second steam channel which is communicated with the heat source heat exchanger (8), the condenser (6) is provided with a condensate pipeline which is communicated with the evaporator (7) through the booster pump (4), the evaporator (7) is further provided with a steam channel which is communicated with the heat source heat exchanger (8), the heat source heat exchanger (8) is also provided with a steam channel which is communicated with the high-temperature photo-thermal system (11) through the second heat regenerator (12), the high-temperature photo-thermal system (11) is also provided with a steam channel which is communicated with the expander (1), the expander (1) is also provided with a low-pressure steam channel which is communicated with the evaporator (7) through the booster pump (4), and the evaporator (7) is also provided with a low-pressure steam channel which is divided into two paths, namely a first path which is communicated with the compressor (3) and a second path which is communicated with the condenser (6); the condenser (6) is also provided with a cooling medium channel which is communicated with the outside, the heat source heat exchanger (8) is also provided with a heat source medium channel which is communicated with the outside, the evaporator (7) or the heat source medium channel is also communicated with the outside, and the expander (1) is connected with the compressor (3) and the second compressor (10) and transmits power to form a photo-thermal type multi-energy carrying single-working-medium combined cycle steam power device; wherein, or the expander (1) is connected with the compressor (3), the booster pump (4) and the second compressor (10) and transmits power.

9. In the photo-thermal type multi-energy co-single-working-medium combined cycle steam power device according to claim 3 or claim 6, a steam channel of the second compressor (10) is communicated with the high-temperature photo-thermal system (11) through the second heat regenerator (12), and the second compressor (10) is regulated to be communicated with the high-temperature photo-thermal system (11) through the steam channel after the second heat regenerator (12) is communicated with the second compressor (10) through the steam channel, so that the photo-thermal type multi-energy co-working-single-working-medium combined cycle steam power device is formed.

10. A photo-thermal type multifunctional single-working-medium combined cycle steam power device is characterized in that a second booster pump and a low-temperature heat regenerator are added in any one of the photo-thermal type multifunctional single-working-medium combined cycle steam power devices according to claims 1-9, a condensate pipe of a condenser (6) is communicated with the booster pump (4) and is adjusted to be communicated with the low-temperature heat regenerator (14) through the second booster pump (13), a steam extraction channel is additionally arranged on a compressor (3) and is communicated with the low-temperature heat regenerator (14), and a condensate pipe of the low-temperature heat regenerator (14) is communicated with the booster pump (4), so that the photo-thermal type multifunctional single-working-medium combined cycle steam power device is formed.

11. In any one of the photo-thermal type multi-energy co-single-working-medium combined cycle steam power devices described in claims 1 and 3-9, a second evaporator and a diffusion pipe are added, a low-pressure steam channel of the regenerator (5) is communicated with the evaporator (7) and is regulated to be communicated with the regenerator (5) through the evaporator (7) and the second evaporator (15), the second expander (2) is communicated with the evaporator (7) and is regulated to be communicated with the second evaporator (2) through the evaporator (7) and the second evaporator (15), the evaporator (7) is communicated with the compressor (3) and the condenser (6) respectively, a condensate pipe of the condenser (6) is communicated with the evaporator (7) through a pressure boost pump (4) and is regulated to be communicated with the condenser (6) through the pressure boost pump (4) and is communicated with the second evaporator (15) through the pressure boost pump (4) and is communicated with the condenser (6) through the pressure boost pump (6), and then the condensate pipe of the condenser (6) is communicated with the second evaporator (15) through the pressure boost pump (4) and the evaporator (6) through the pressure boost pump and the evaporator (6) respectively.

12. In the photo-thermal type multi-energy co-single-working-medium combined cycle steam power device, a second evaporator and a diffusion pipe are added in the photo-thermal type multi-energy co-single-working-medium combined cycle steam power device, the low-pressure steam channel of the expander (1) is communicated with the evaporator (7) and is regulated to be communicated with the second evaporator (15) through the evaporator (7), the low-pressure steam channel of the second expander (2) is communicated with the evaporator (7) and is regulated to be communicated with the second evaporator (2) through the evaporator (7), the low-pressure steam channel of the evaporator (7) is respectively communicated with the compressor (3) and the condenser (6) and is regulated to be communicated with the second evaporator (15) through the low-pressure steam channel of the compressor (3) and the condenser (6), the condensate pipe of the condenser (6) is communicated with the second evaporator (15) through the booster pump (4) and is regulated to be communicated with the condenser (6) through the condensate pipe (4) and is communicated with the second evaporator (15) through the second evaporator (15), and the multi-working-medium combined cycle steam power device is formed after the condensate pipe of the condenser (6) is communicated with the second evaporator (15) through the evaporator (15).

13. The photo-thermal type multifunctional single-working-medium combined cycle steam power device is characterized in that the positions of a medium-temperature photo-thermal system (9) and a second compressor (10) are exchanged in any one of the photo-thermal type multifunctional single-working-medium combined cycle steam power devices disclosed in claims 1-12 to form the photo-thermal type multifunctional single-working-medium combined cycle steam power device.

14. A photo-thermal type multi-energy co-single-working-medium combined cycle steam power device is characterized in that in any one of the photo-thermal type multi-energy co-single-working-medium combined cycle steam power devices in claims 1-13, an expansion speed increaser (A) is added and replaces an expansion machine (1), a second expansion speed increaser (B) is added and replaces a second expansion machine (2), a dual-energy compressor (C) is added and replaces a compressor (3), a newly added diffuser pipe (D) is added and replaces a booster pump (4), a second dual-energy compressor (E) is added and replaces a second compressor (10), and the photo-thermal type multi-energy co-single-working-medium combined cycle steam power device is formed.