CN108679880B

CN108679880B - Double-working medium combined cycle compression heat pump

Info

Publication number: CN108679880B
Application number: CN201810211502.7A
Authority: CN
Inventors: 李华玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-03-30
Filing date: 2018-03-10
Publication date: 2021-07-27
Anticipated expiration: 2038-03-10
Also published as: CN108679880A

Abstract

The invention provides a double-working-medium combined cycle compression heat pump, belonging to the technical field of energy power and heat pumps. The heat supply device is provided with a condensate pipeline which is communicated with the mixing evaporator through a circulating pump, the expander is provided with a steam channel which is communicated with the mixing evaporator, the mixing evaporator is provided with a steam channel which is respectively communicated with the compressor and the second expander, the compressor is provided with a steam channel which is communicated with the expander through a high-temperature heat exchanger, and the second expander is provided with a steam channel which is communicated with the heat supply device; the second compressor is provided with a circulating medium channel which is communicated with a second heat supply device, the second heat supply device is provided with a circulating medium channel which is communicated with the evaporator through the throttle valve, and the evaporator is provided with a circulating medium channel which is communicated with the second compressor; the high-temperature heat exchanger and the mixed evaporator are provided with heat source medium channels, the heat supply device and the second heat supply device are provided with heated medium channels, the evaporator is provided with a low-temperature heat medium channel which is respectively communicated with the outside, and the expander and the second expander are connected with the compressor and the second compressor and transmit power to form the double-working-medium combined cycle compression heat pump.

Description

Double-working medium combined cycle compression heat pump

The technical field is as follows:

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

Background art:

cold demand, heat demand and power demand, which are common in human life and production; in reality, people often need to use high-temperature heat energy to realize refrigeration, heat supply or power conversion, and also need to use power to refrigerate or use power and combine low-temperature heat energy to supply heat. In achieving the above objects, various considerations or conditional limitations are faced, including the type, grade and quantity of energy sources, the type, grade and quantity of user demands, ambient temperature, the type of working medium, the flow, structure and manufacturing cost of the equipment, and so on.

In the technical field of refrigeration or heating, the utilization of temperature difference by utilizing a phase-change medium is a common technical means, has a plurality of advantages, and has defects, particularly the problems of insufficient temperature difference utilization, low performance index or overhigh operating pressure and the like caused by non-high-quality fuel, high temperature and variable temperature heat sources; in actual needs, it is also considered to supply power to the outside while heating or cooling, to realize effective utilization of mechanical energy during cooling/heating, and to adapt to the range of input energy, low-temperature medium, and heating needs.

The invention aims at realizing refrigeration/heating by using non-high-quality fuel and a high-temperature or variable-temperature heat source, and considering the requirements of effective utilization of mechanical energy or power output, and provides the dual-working-medium combined cycle compression heat pump which can keep the advantages of a phase-change medium, runs at low pressure, fully utilizes temperature difference, has a reasonable structure, utilizes resources reasonably, has a wide working parameter range and has a wider application range.

The invention content is as follows:

the invention mainly aims to provide a double-working-medium combined cycle compression heat pump, and the specific contents of the invention are explained in different terms as follows:

1. the double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander and a second heat supply device; the heat supplier has condensed liquid pipeline connected via circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor and the steam passage are connected via high temperature heat exchanger to the expander, and the second expander and the steam passage are connected to the heat supplier; the external part is provided with a low-temperature heat medium channel which is communicated with a second compressor, the second compressor is also provided with a low-temperature heat medium channel which is communicated with a third expander through a second heat supply device, and the third expander is also provided with a low-temperature heat medium channel which is communicated with the external part; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form a dual-working-medium combined cycle compression heat pump.

2. A dual working medium combined cycle compression heat pump, in the dual working medium combined cycle compression heat pump of item 1, the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power, and the expander, the second expander and the third expander are connected with the compressor, the second compressor and the circulating pump and transmit power, so as to form the dual working medium combined cycle compression heat pump.

3. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device and a low-temperature heat regenerator; the heat supplier has condensed liquid pipeline connected via circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor and the steam passage are connected via high temperature heat exchanger to the expander, and the second expander and the steam passage are connected to the heat supplier; the external part is provided with a low-temperature heat medium channel which is communicated with a second compressor through a low-temperature heat regenerator, the second compressor is also provided with a low-temperature heat medium channel which is communicated with a third expander through the second heat supplier and the low-temperature heat regenerator, and the third expander is also provided with a low-temperature heat medium channel which is communicated with the external part; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form a dual-working-medium combined cycle compression heat pump.

4. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device and a low-temperature heat exchanger; the heat supplier has condensed liquid pipeline connected via circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor and the steam passage are connected via high temperature heat exchanger to the expander, and the second expander and the steam passage are connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a third expander through a second heat supply device, and the third expander is also provided with a circulating medium channel which is communicated with the second compressor through a low-temperature heat exchanger; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the low-temperature heat exchanger is also provided with a low-temperature heat medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form the dual-working-medium combined cycle compression heat pump.

5. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator and a low-temperature heat exchanger; the heat supplier has condensed liquid pipeline connected via circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor and the steam passage are connected via high temperature heat exchanger to the expander, and the second expander and the steam passage are connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a third expander through a second heat supply device and a low-temperature heat regenerator, and the third expander is also provided with a circulating medium channel which is communicated with the second compressor through a low-temperature heat exchanger and a low-temperature heat regenerator; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the low-temperature heat exchanger is also provided with a low-temperature heat medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form the dual-working-medium combined cycle compression heat pump.

6. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a second heat supplier, an evaporator and a throttle valve; the heat supplier has condensed liquid pipeline connected via circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor and the steam passage are connected via high temperature heat exchanger to the expander, and the second expander and the steam passage are connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a second heat supplier, the second heat supplier is also provided with a circulating medium channel which is communicated with the evaporator through a throttle valve, and the evaporator is also provided with a circulating medium channel which is communicated with the second compressor; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the evaporator is also provided with a low-temperature heat medium channel communicated with the outside, and the expander and the second expander are connected with the compressor and the second compressor and transmit power to form a double-working-medium combined cycle heat pump compression type.

7. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a heat regenerator and a second circulating pump; the heat supplier has condensed liquid pipeline connected via the circulating pump to the heat regenerator, the second expander has steam extracting passage connected to the heat regenerator, the heat regenerator has also condensed liquid pipeline connected via the second circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor has also steam passage connected via the high temperature heat exchanger to the expander, and the second expander has also steam passage connected to the heat supplier; the external part is provided with a low-temperature heat medium channel which is communicated with a second compressor, the second compressor is also provided with a low-temperature heat medium channel which is communicated with a third expander through a second heat supply device, and the third expander is also provided with a low-temperature heat medium channel which is communicated with the external part; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form a dual-working-medium combined cycle compression heat pump.

8. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator, a heat regenerator and a second circulating pump; the heat supplier has condensed liquid pipeline connected via the circulating pump to the heat regenerator, the second expander has steam extracting passage connected to the heat regenerator, the heat regenerator has also condensed liquid pipeline connected via the second circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor has also steam passage connected via the high temperature heat exchanger to the expander, and the second expander has also steam passage connected to the heat supplier; the external part is provided with a low-temperature heat medium channel which is communicated with a second compressor through a low-temperature heat regenerator, the second compressor is also provided with a low-temperature heat medium channel which is communicated with a third expander through the second heat supplier and the low-temperature heat regenerator, and the third expander is also provided with a low-temperature heat medium channel which is communicated with the external part; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form a dual-working-medium combined cycle compression heat pump.

9. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat exchanger, a heat regenerator and a second circulating pump; the heat supplier has condensed liquid pipeline connected via the circulating pump to the heat regenerator, the second expander has steam extracting passage connected to the heat regenerator, the heat regenerator has also condensed liquid pipeline connected via the second circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor has also steam passage connected via the high temperature heat exchanger to the expander, and the second expander has also steam passage connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a third expander through a second heat supply device, and the third expander is also provided with a circulating medium channel which is communicated with the second compressor through a low-temperature heat exchanger; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the low-temperature heat exchanger is also provided with a low-temperature heat medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form the dual-working-medium combined cycle compression heat pump.

10. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator, a low-temperature heat exchanger, a heat regenerator and a second circulating pump; the heat supplier has condensed liquid pipeline connected via the circulating pump to the heat regenerator, the second expander has steam extracting passage connected to the heat regenerator, the heat regenerator has also condensed liquid pipeline connected via the second circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor has also steam passage connected via the high temperature heat exchanger to the expander, and the second expander has also steam passage connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a third expander through a second heat supply device and a low-temperature heat regenerator, and the third expander is also provided with a circulating medium channel which is communicated with the second compressor through a low-temperature heat exchanger and a low-temperature heat regenerator; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the low-temperature heat exchanger is also provided with a low-temperature heat medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form the dual-working-medium combined cycle compression heat pump.

11. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a second heat supplier, an evaporator, a throttle valve, a heat regenerator and a second circulating pump; the heat supplier has condensed liquid pipeline connected via the circulating pump to the heat regenerator, the second expander has steam extracting passage connected to the heat regenerator, the heat regenerator has also condensed liquid pipeline connected via the second circulating pump to the mixing evaporator, the expander has steam passage connected to the mixing evaporator, the mixing evaporator and the steam passage are connected separately to the compressor and the second expander, the compressor has also steam passage connected via the high temperature heat exchanger to the expander, and the second expander has also steam passage connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a second heat supplier, the second heat supplier is also provided with a circulating medium channel which is communicated with the evaporator through a throttle valve, and the evaporator is also provided with a circulating medium channel which is communicated with the second compressor; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the evaporator is also provided with a low-temperature heat medium channel communicated with the outside, and the expander and the second expander are connected with the compressor and the second compressor and transmit power to form a double-working-medium combined cycle heat pump compression type.

12. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device and a preheater; the heat supplier has condensed liquid pipeline connected via the circulating pump and the preheater to the mixed evaporator, the expander has steam passage connected to the mixed evaporator, the mixed evaporator has also steam passage connected to the compressor and the second expander separately, the compressor has also steam passage connected to the expander via the high temperature heat exchanger, and the second expander has also steam passage connected to the heat supplier; the external part is provided with a low-temperature heat medium channel which is communicated with a second compressor, the second compressor is also provided with a low-temperature heat medium channel which is communicated with a third expander through a second heat supply device, and the third expander is also provided with a low-temperature heat medium channel which is communicated with the external part; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the preheater is also provided with a heat source medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form the dual-working-medium combined cycle compression heat pump.

13. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator and a preheater; the heat supplier has condensed liquid pipeline connected via the circulating pump and the preheater to the mixed evaporator, the expander has steam passage connected to the mixed evaporator, the mixed evaporator has also steam passage connected to the compressor and the second expander separately, the compressor has also steam passage connected to the expander via the high temperature heat exchanger, and the second expander has also steam passage connected to the heat supplier; the external part is provided with a low-temperature heat medium channel which is communicated with a second compressor through a low-temperature heat regenerator, the second compressor is also provided with a low-temperature heat medium channel which is communicated with a third expander through the second heat supplier and the low-temperature heat regenerator, and the third expander is also provided with a low-temperature heat medium channel which is communicated with the external part; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the preheater is also provided with a heat source medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form the dual-working-medium combined cycle compression heat pump.

14. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat exchanger and a preheater; the heat supplier has condensed liquid pipeline connected via the circulating pump and the preheater to the mixed evaporator, the expander has steam passage connected to the mixed evaporator, the mixed evaporator has also steam passage connected to the compressor and the second expander separately, the compressor has also steam passage connected to the expander via the high temperature heat exchanger, and the second expander has also steam passage connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a third expander through a second heat supply device, and the third expander is also provided with a circulating medium channel which is communicated with the second compressor through a low-temperature heat exchanger; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the preheater is also provided with a heat source medium channel communicated with the outside, the low-temperature heat exchanger is also provided with a low-temperature heat medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form the double-working-medium combined cycle compression heat pump.

15. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator, a low-temperature heat exchanger and a preheater; the heat supplier has condensed liquid pipeline connected via the circulating pump and the preheater to the mixed evaporator, the expander has steam passage connected to the mixed evaporator, the mixed evaporator has also steam passage connected to the compressor and the second expander separately, the compressor has also steam passage connected to the expander via the high temperature heat exchanger, and the second expander has also steam passage connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a third expander through a second heat supply device and a low-temperature heat regenerator, and the third expander is also provided with a circulating medium channel which is communicated with the second compressor through a low-temperature heat exchanger and a low-temperature heat regenerator; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the preheater is also provided with a heat source medium channel communicated with the outside, the low-temperature heat exchanger is also provided with a low-temperature heat medium channel communicated with the outside, and the expander, the second expander and the third expander are connected with the compressor and the second compressor and transmit power to form the double-working-medium combined cycle compression heat pump.

16. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a second heat supplier, an evaporator, a throttle valve and a preheater; the heat supplier has condensed liquid pipeline connected via the circulating pump and the preheater to the mixed evaporator, the expander has steam passage connected to the mixed evaporator, the mixed evaporator has also steam passage connected to the compressor and the second expander separately, the compressor has also steam passage connected to the expander via the high temperature heat exchanger, and the second expander has also steam passage connected to the heat supplier; the second compressor is provided with a circulating medium channel which is communicated with a second heat supplier, the second heat supplier is also provided with a circulating medium channel which is communicated with the evaporator through a throttle valve, and the evaporator is also provided with a circulating medium channel which is communicated with the second compressor; the high-temperature heat exchanger is also provided with a heat source medium channel communicated with the outside, the heat supply device and the second heat supply device are also respectively provided with a heated medium channel communicated with the outside, the preheater is also provided with a heat source medium channel communicated with the outside, the evaporator is also provided with a low-temperature heat medium channel communicated with the outside, and the expander and the second expander are connected with the compressor and the second compressor and transmit power to form the dual-working-medium combined cycle compression heat pump.

17. A dual-working medium combined cycle compression heat pump is characterized in that in any one of the dual-working medium combined cycle compression heat pumps in items 1-16, a heat source medium channel is additionally arranged on a mixing evaporator and is communicated with the outside to form the dual-working medium combined cycle compression heat pump.

18. A dual-working medium combined cycle compression heat pump is characterized in that a high-temperature heat regenerator is added in any one of the dual-working medium combined cycle compression heat pumps in items 1 to 17, a steam channel of a compressor is communicated with an expander through the high-temperature heat exchanger and adjusted to be communicated with the expander through the high-temperature heat regenerator and the high-temperature heat exchanger, a steam channel of the expander is communicated with a mixed evaporator and adjusted to be communicated with the mixed evaporator through the steam channel of the expander and the high-temperature heat exchanger, and the dual-working medium combined cycle compression heat pump is formed.

19. A dual-working medium combined cycle compression heat pump is characterized in that a newly added compressor and a newly added high-temperature heat exchanger are added in any one of the dual-working medium combined cycle compression heat pumps in items 1-17, a steam channel of the compressor is communicated with an expander through the high-temperature heat exchanger, the compressor is adjusted to be communicated with the newly added compressor through the steam channel of the compressor, the newly added compressor is communicated with the expander through the newly added high-temperature heat exchanger, the newly added high-temperature heat exchanger is also communicated with the outside through a heat source medium channel, and the expander is connected with the newly added compressor and transmits power to form the dual-working medium combined cycle compression heat pump.

20. A dual-working medium combined cycle compression heat pump is characterized in that a new expansion machine and a new high-temperature heat exchanger are added in any one of the dual-working medium combined cycle compression heat pumps in items 1-17, a steam channel of a compressor is communicated with the expansion machine through the high-temperature heat exchanger, the compressor is adjusted to be communicated with the new expansion machine through the steam channel of the compressor, the new expansion machine is communicated with the expansion machine through the new high-temperature heat exchanger, the new high-temperature heat exchanger is communicated with the outside through a heat source medium channel, and the new expansion machine is connected with the compressor and transmits power to form the dual-working medium combined cycle compression heat pump.

21. A dual-working-medium combined cycle compression heat pump is characterized in that a high-temperature heat regenerator, a newly-added compressor and a newly-added high-temperature heat exchanger are added in any one of the dual-working-medium combined cycle compression heat pumps in items 1 to 17, a steam channel of the compressor is communicated with an expander through the high-temperature heat exchanger and the high-temperature heat exchanger, the steam channel of the newly-added compressor is communicated with the expander through the newly-added high-temperature heat exchanger, the steam channel of the expander is communicated with a mixed evaporator, the steam channel of the expander is communicated with the mixed evaporator through the high-temperature heat regenerator, the steam channel of the newly-added compressor is communicated with the mixed evaporator, the heat channel of the newly-added high-temperature heat exchanger and a heat source medium channel are communicated with the outside, and the expander is connected with the newly-added compressor and transmits power to form the dual-working-medium combined cycle compression heat pump.

22. A dual-working medium combined cycle compression heat pump is characterized in that a high-temperature heat regenerator, a new expansion machine and a new high-temperature heat exchanger are added in any one of the dual-working medium combined cycle compression heat pumps in items 1 to 17, a steam channel of a compressor is communicated with an expansion machine through the high-temperature heat exchanger and adjusted to be a steam channel of the compressor is communicated with the new expansion machine through the high-temperature heat regenerator and the high-temperature heat exchanger, the steam channel of the new expansion machine is communicated with the expansion machine through the new high-temperature heat exchanger, the steam channel of the expansion machine is communicated with a mixed evaporator through the mixed evaporator and adjusted to be a steam channel of the expansion machine, the steam channel of the expansion machine is communicated with the mixed evaporator through the high-temperature heat regenerator, the heat source medium channel of the new expansion machine is communicated with the outside, and the new expansion machine is connected with the compressor and transmits power to form the dual-working medium combined cycle compression heat pump.

23. A dual-working-medium combined cycle compression heat pump is characterized in that a power machine is added in any one of the dual-working-medium combined cycle compression heat pumps in items 1-22, the power machine is connected with a second compressor and provides power for the second compressor, and a dual-working-medium combined cycle compression heat pump driven by additional external power is formed.

24. A dual-working medium combined cycle compression heat pump is characterized in that a working machine is additionally arranged in any one of the dual-working medium combined cycle compression heat pumps in items 1 to 22, and an expansion machine is connected with the working machine and provides power for the working machine to form the dual-working medium combined cycle compression heat pump which additionally provides power load to the outside.

Description of the drawings:

fig. 1 is a diagram of a 1 st principal thermodynamic system for a dual-working-medium combined-cycle compression heat pump according to the present invention.

Fig. 2 is a 2 nd principle thermodynamic system diagram of a dual-working-medium combined-cycle compression heat pump provided according to the present invention.

Fig. 3 is a 3 rd principle thermodynamic system diagram of a dual-working-medium combined-cycle compression heat pump provided in accordance with the present invention.

Fig. 4 is a diagram of a 4 th principle thermodynamic system for a dual-working-medium combined-cycle compression heat pump according to the present invention.

Fig. 5 is a diagram of a 5 th principle thermodynamic system for a dual-working-medium combined-cycle compression heat pump according to the present invention.

Fig. 6 is a 6 th principle thermodynamic system diagram of a dual-working-medium combined-cycle compression heat pump according to the present invention.

Fig. 7 is a 7 th principle thermodynamic system diagram of a dual-working-medium combined-cycle compression heat pump provided in accordance with the present invention.

Fig. 8 is a diagram of an 8 th principle thermodynamic system for a dual-working-medium combined-cycle compression heat pump according to the present invention.

Fig. 9 is a diagram of a 9 th principle thermodynamic system for a dual-working-medium combined-cycle compression heat pump according to the present invention.

Fig. 10 is a diagram of a 10 th principle thermodynamic system for a dual-working-medium combined-cycle compression heat pump according to the present invention.

Fig. 11 is a diagram of an 11 th principle thermodynamic system for a dual-working-medium combined-cycle compression heat pump according to the present invention.

In the figure, 1-compressor, 2-expander, 3-second expander, 4-circulating pump, 5-high temperature heat exchanger, 6-heat supplier, 7-hybrid evaporator, 8-second compressor, 9-third expander, 10-second heat supplier, 11-low temperature heat regenerator, 12-low temperature heat exchanger, 13-evaporator, 14-throttle valve, 15-heat regenerator, 16-second circulating pump, 17-preheater, 18-high temperature heat regenerator; a-newly-increased compressor, B-newly-increased expansion machine and C-newly-increased high-temperature heat exchanger.

The specific implementation mode is as follows:

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

The dual-working-medium combined-cycle compression heat pump shown in fig. 1 is realized by:

(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixing evaporator, a second compressor, a third expander and a second heat supply device; the heat supplier 6 is provided with a condensate pipeline which is communicated with a mixing evaporator 7 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixing evaporator 7, the mixing evaporator 7 is also provided with a steam channel which is respectively communicated with the compressor 1 and the second expander 3, the compressor 1 is also provided with a steam channel which is communicated with the expander 2 through a high-temperature heat exchanger 5, and the second expander 3 is also provided with a steam channel which is communicated with the heat supplier 6; a low-temperature heat medium channel is arranged outside and communicated with the second compressor 8, the second compressor 8 is also communicated with a third expander 9 through a second heat supply device 10, and the third expander 9 is also communicated with the outside through the low-temperature heat medium channel; the high-temperature heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the heat supplier 6 and the second heat supplier 10 are also respectively provided with a heated medium channel communicated with the outside, the mixing evaporator 7 is also provided with a heat source medium channel communicated with the outside, and the expander 2, the second expander 3 and the third expander 9 are connected with the compressor 1 and the second compressor 8 and transmit power.

(2) In the process, the condensate of the heat supply device 6 is boosted by the circulating pump 4 and enters the mixing evaporator 7, the condensate is mixed with the steam from the expansion machine 2 and is vaporized after absorbing the heat load provided by the external heat source, and the steam discharged by the mixing evaporator 7 respectively enters the compressor 1 for boosting and heating and enters the second expansion machine 3 for pressure reduction and work; the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 5 and absorbs heat, flows through the expander 2 and reduces the pressure to do work, and then enters the hybrid evaporator 7 to release heat and reduce the temperature; the steam discharged by the second expander 3 enters a heat supply device 6, releases heat to a heated medium and is condensed; the external low-temperature heat medium flows through the second compressor 8 to increase the pressure and the temperature, flows through the second heat supply device 10 to release heat, flows through the third expansion machine 9 to reduce the pressure and do work, and is discharged outwards; the heat source medium provides driving heat load through the high-temperature heat exchanger 5 and the mixed evaporator 7, the medium-temperature heat load is taken away by the heated medium through the heat supplier 6 and the second heat supplier 10, the low-temperature heat load is provided by the low-temperature heat medium through the inlet and outlet flow, and the work output by the expander 2, the second expander 3 and the third expander 9 is provided for the compressor 1 and the second compressor 8 as power, so that the dual-working-medium combined cycle compression heat pump is formed.

The dual-working-medium combined-cycle compression heat pump shown in fig. 2 is realized by:

(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a third expander, a second heat supplier and a low-temperature heat regenerator; the heat supplier 6 is provided with a condensate pipeline which is communicated with a mixing evaporator 7 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixing evaporator 7, the mixing evaporator 7 is also provided with a steam channel which is respectively communicated with the compressor 1 and the second expander 3, the compressor 1 is also provided with a steam channel which is communicated with the expander 2 through a high-temperature heat exchanger 5, and the second expander 3 is also provided with a steam channel which is communicated with the heat supplier 6; a low-temperature heat medium channel is arranged outside and communicated with the second compressor 8 through a low-temperature heat regenerator 11, the second compressor 8 is also communicated with a third expander 9 through a second heat supplier 10 and the low-temperature heat regenerator 11, and the third expander 9 is also communicated with the outside through the low-temperature heat medium channel; the high-temperature heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the heat supplier 6 and the second heat supplier 10 are also respectively provided with a heated medium channel communicated with the outside, the mixing evaporator 7 is also provided with a heat source medium channel communicated with the outside, and the expander 2, the second expander 3 and the third expander 9 are connected with the compressor 1 and the second compressor 8 and transmit power.

(2) In the process, the condensate of the heat supply device 6 is boosted by the circulating pump 4 and enters the mixing evaporator 7, the condensate is mixed with the steam from the expansion machine 2 and is vaporized after absorbing the heat load provided by the external heat source, and the steam discharged by the mixing evaporator 7 respectively enters the compressor 1 for boosting and heating and enters the second expansion machine 3 for pressure reduction and work; the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 5 and absorbs heat, flows through the expander 2 and reduces the pressure to do work, and then enters the hybrid evaporator 7 to release heat and reduce the temperature; the steam discharged by the second expander 3 enters a heat supply device 6, releases heat to a heated medium and is condensed; the external low-temperature heat medium flows through the low-temperature heat regenerator 11 to absorb heat, flows through the second compressor 8 to increase the pressure and the temperature, flows through the second heat supplier 10 and the low-temperature heat regenerator 11 to gradually release heat, flows through the third expander 9 to reduce the pressure and do work and is externally discharged; the heat source medium provides driving heat load through the high-temperature heat exchanger 5 and the mixed evaporator 7, the medium-temperature heat load is taken away by the heated medium through the heat supplier 6 and the second heat supplier 10, the low-temperature heat load is provided by the low-temperature heat medium through the inlet and outlet flow, and the work output by the expander 2, the second expander 3 and the third expander 9 is provided for the compressor 1 and the second compressor 8 as power, so that the dual-working-medium combined cycle compression heat pump is formed.

The dual working medium combined cycle compression heat pump shown in fig. 3 is realized by the following steps:

(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a third expander, a second heat supplier and a low-temperature heat exchanger; the heat supplier 6 is provided with a condensate pipeline which is communicated with a mixing evaporator 7 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixing evaporator 7, the mixing evaporator 7 is also provided with a steam channel which is respectively communicated with the compressor 1 and the second expander 3, the compressor 1 is also provided with a steam channel which is communicated with the expander 2 through a high-temperature heat exchanger 5, and the second expander 3 is also provided with a steam channel which is communicated with the heat supplier 6; the second compressor 8 is provided with a circulating medium channel which is communicated with the third expander 9 through a second heat supply device 10, and the third expander 9 is also provided with a circulating medium channel which is communicated with the second compressor 8 through a low-temperature heat exchanger 12; the high-temperature heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the heat supplier 6 and the second heat supplier 10 are also provided with a heated medium channel communicated with the outside respectively, the mixing evaporator 7 is also provided with a heat source medium channel communicated with the outside, the low-temperature heat exchanger 12 is also provided with a low-temperature heat medium channel communicated with the outside, and the expander 2, the second expander 3 and the third expander 9 are connected with the compressor 1 and the second compressor 8 and transmit power.

(2) In the process, the condensate of the heat supply device 6 is boosted by the circulating pump 4 and enters the mixing evaporator 7, the condensate is mixed with the steam from the expansion machine 2 and is vaporized after absorbing the heat load provided by the external heat source, and the steam discharged by the mixing evaporator 7 respectively enters the compressor 1 for boosting and heating and enters the second expansion machine 3 for pressure reduction and work; the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 5 and absorbs heat, flows through the expander 2 and reduces the pressure to do work, and then enters the hybrid evaporator 7 to release heat and reduce the temperature; the steam discharged by the second expander 3 enters a heat supply device 6, releases heat to a heated medium and is condensed; the circulating medium discharged by the second compressor 8 flows through the second heat supply device 10 and releases heat, flows through the third expander 9 and works by reducing pressure, flows through the low-temperature heat exchanger 12 and absorbs heat, and then enters the second compressor 8 to increase pressure and temperature; the heat source medium provides driving heat load through the high-temperature heat exchanger 5 and the mixed evaporator 7, the medium-temperature heat load is taken away by the heated medium through the heat supplier 6 and the second heat supplier 10, the low-temperature heat load is provided by the low-temperature heat exchanger 12, and the work output by the expander 2, the second expander 3 and the third expander 9 is provided for the compressor 1 and the second compressor 8 as power, so that the dual-working-medium combined cycle compression heat pump is formed.

The dual-working-medium combined-cycle compression heat pump shown in fig. 4 is realized by:

(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a third expander, a second heat supplier, a low-temperature heat regenerator and a low-temperature heat exchanger; the heat supplier 6 is provided with a condensate pipeline which is communicated with a mixing evaporator 7 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixing evaporator 7, the mixing evaporator 7 is also provided with a steam channel which is respectively communicated with the compressor 1 and the second expander 3, the compressor 1 is also provided with a steam channel which is communicated with the expander 2 through a high-temperature heat exchanger 5, and the second expander 3 is also provided with a steam channel which is communicated with the heat supplier 6; the second compressor 8 is provided with a circulating medium channel which is communicated with a third expander 9 through a second heat supplier 10 and a low-temperature heat regenerator 11, and the third expander 9 is also provided with a circulating medium channel which is communicated with the second compressor 8 through a low-temperature heat exchanger 12 and a low-temperature heat regenerator 11; the high-temperature heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the heat supplier 6 and the second heat supplier 10 are also provided with a heated medium channel communicated with the outside respectively, the mixing evaporator 7 is also provided with a heat source medium channel communicated with the outside, the low-temperature heat exchanger 12 is also provided with a low-temperature heat medium channel communicated with the outside, and the expander 2, the second expander 3 and the third expander 9 are connected with the compressor 1 and the second compressor 8 and transmit power.

(2) In the process, the condensate of the heat supply device 6 is boosted by the circulating pump 4 and enters the mixing evaporator 7, the condensate is mixed with the steam from the expansion machine 2 and is vaporized after absorbing the heat load provided by the external heat source, and the steam discharged by the mixing evaporator 7 respectively enters the compressor 1 for boosting and heating and enters the second expansion machine 3 for pressure reduction and work; the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 5 and absorbs heat, flows through the expander 2 and reduces the pressure to do work, and then enters the hybrid evaporator 7 to release heat and reduce the temperature; the steam discharged by the second expander 3 enters a heat supply device 6, releases heat to a heated medium and is condensed; the circulating medium discharged by the second compressor 8 flows through the second heat supply device 10 and the low-temperature heat regenerator 11 and gradually releases heat, flows through the third expansion machine 9 to reduce pressure and do work, flows through the low-temperature heat exchanger 12 and the low-temperature heat regenerator 11 and gradually absorbs heat, and then enters the second compressor 8 to increase pressure and temperature; the heat source medium provides driving heat load through the high-temperature heat exchanger 5 and the mixed evaporator 7, the medium-temperature heat load is taken away by the heated medium through the heat supplier 6 and the second heat supplier 10, the low-temperature heat load is provided by the low-temperature heat exchanger 12, and the work output by the expander 2, the second expander 3 and the third expander 9 is provided for the compressor 1 and the second compressor 8 as power, so that the dual-working-medium combined cycle compression heat pump is formed.

The dual-working-medium combined-cycle compression heat pump shown in fig. 5 is realized by:

(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixing evaporator, a second compressor, a second heat supplier, an evaporator and a throttle valve; the heat supplier 6 is provided with a condensate pipeline which is communicated with a mixing evaporator 7 through a circulating pump 4, the expander 2 is provided with a steam channel which is communicated with the mixing evaporator 7, the mixing evaporator 7 is also provided with a steam channel which is respectively communicated with the compressor 1 and the second expander 3, the compressor 1 is also provided with a steam channel which is communicated with the expander 2 through a high-temperature heat exchanger 5, and the second expander 3 is also provided with a steam channel which is communicated with the heat supplier 6; the second compressor 8 is provided with a circulating medium channel which is communicated with the second heat supplier 10, the second heat supplier 10 is also provided with a circulating medium channel which is communicated with the evaporator 13 through a throttle valve 14, and the evaporator 13 is also provided with a circulating medium channel which is communicated with the second compressor 8; the high-temperature heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the heat supplier 6 and the second heat supplier 10 are also provided with heated medium channels communicated with the outside respectively, the mixing evaporator 7 is also provided with a heat source medium channel communicated with the outside, the evaporator 13 is also provided with a low-temperature heat medium channel communicated with the outside, and the expander 2 and the second expander 3 are connected with the compressor 1 and the second compressor 8 and transmit power.

(2) In the process, the condensate of the heat supply device 6 is boosted by the circulating pump 4 and enters the mixing evaporator 7, the condensate is mixed with the steam from the expansion machine 2 and is vaporized after absorbing the heat load provided by the external heat source, and the steam discharged by the mixing evaporator 7 respectively enters the compressor 1 for boosting and heating and enters the second expansion machine 3 for pressure reduction and work; the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 5 and absorbs heat, flows through the expander 2 and reduces the pressure to do work, and then enters the hybrid evaporator 7 to release heat and reduce the temperature; the steam discharged by the second expander 3 enters a heat supply device 6, releases heat to a heated medium and is condensed; the circulating medium discharged by the second compressor 8 enters the second heat supply device 10 to release heat and condense, the condensate flows through the throttle valve 14 to be throttled and depressurized and then enters the evaporator 13 to absorb heat to form steam, and the steam discharged by the evaporator 13 enters the second compressor 8 to be boosted and heated; the heat source medium provides driving heat load through the high-temperature heat exchanger 5 and the mixed evaporator 7, the medium-temperature heat load is taken away by the heated medium through the heat supplier 6 and the second heat supplier 10, the low-temperature heat load is provided by the low-temperature heat medium through the evaporator 13, and the work output by the expander 2 and the second expander 3 is provided for the compressor 1 and the second compressor 8 as power, so that the dual-medium combined cycle compression heat pump is formed.

The dual-working-medium combined-cycle compression heat pump shown in fig. 6 is realized by:

(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixing evaporator, a second compressor, a third expander, a second heat supplier, a heat regenerator and a second circulating pump; the heat supplier 6 has a condensate pipeline communicated with the heat regenerator 15 through the circulating pump 4, the second expander 3 has a steam extraction channel communicated with the heat regenerator 15, the heat regenerator 15 also has a condensate pipeline communicated with the mixing evaporator 7 through the second circulating pump 16, the expander 2 has a steam channel communicated with the mixing evaporator 7, the mixing evaporator 7 also has a steam channel communicated with the compressor 1 and the second expander 3 respectively, the compressor 1 also has a steam channel communicated with the expander 2 through the high temperature heat exchanger 5, the second expander 3 also has a steam channel communicated with the heat supplier 6; a low-temperature heat medium channel is arranged outside and communicated with the second compressor 8, the second compressor 8 is also communicated with a third expander 9 through a second heat supply device 10, and the third expander 9 is also communicated with the outside through the low-temperature heat medium channel; the high-temperature heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the heat supplier 6 and the second heat supplier 10 are also respectively provided with a heated medium channel communicated with the outside, the mixing evaporator 7 is also provided with a heat source medium channel communicated with the outside, and the expander 2, the second expander 3 and the third expander 9 are connected with the compressor 1 and the second compressor 8 and transmit power.

(2) In the process, the condensate of the heat supply device 6 is boosted by the circulating pump 4 and enters the heat regenerator 8, the extracted steam of the second expansion machine 3 enters the heat regenerator 15 to be mixed with the condensate, then the heat is released and condensed, the condensate of the heat regenerator 15 is boosted by the second circulating pump 16 and enters the hybrid evaporator 7, the condensate is mixed with the high-temperature steam from the expansion machine 2, the high-temperature steam absorbs the heat load provided by the external heat source and then is vaporized, the steam discharged by the hybrid evaporator 7 is divided into two paths, namely the first path is provided for the compressor 1, and the second path is provided for the second expansion machine 3; the first path of steam flows through the compressor 1 to increase the pressure and the temperature, flows through the high-temperature heat exchanger 5 to absorb heat, flows through the expander 2 to reduce the pressure and do work, and then enters the mixing evaporator 7 to release heat and reduce the temperature; the second path of steam enters the second expander 3 to complete partial work and then is divided into two paths, wherein the first path enters the heat regenerator 15, and the second path continues to reduce the pressure and work and then enters the heat supplier 6 to release heat and condense; the external low-temperature heat medium flows through the second compressor 8 to increase the pressure and the temperature, flows through the second heat supply device 10 to release heat, flows through the third expansion machine 9 to reduce the pressure and do work, and is discharged outwards; the heat source medium provides driving heat load through the high-temperature heat exchanger 5 and the mixed evaporator 7, the medium-temperature heat load is taken away by the heated medium through the heat supplier 6 and the second heat supplier 10, the low-temperature heat load is provided by the low-temperature heat medium through the inlet and outlet flow, and the work output by the expander 2, the second expander 3 and the third expander 9 is provided for the compressor 1 and the second compressor 8 as power, so that the dual-working-medium combined cycle compression heat pump is formed.

The dual working medium combined cycle compression heat pump shown in fig. 7 is realized by the following steps:

(1) structurally, the system mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixing evaporator, a second compressor, a third expander, a second heat supply device and a preheater; the heat supplier 6 is provided with a condensate pipeline which is communicated with the mixing evaporator 7 through the circulating pump 4 and the preheater 17, the expander 2 is provided with a steam channel which is communicated with the mixing evaporator 7, the mixing evaporator 7 and the steam channel are respectively communicated with the compressor 1 and the second expander 3, the compressor 1 and the steam channel are communicated with the expander 2 through the high-temperature heat exchanger 5, and the second expander 3 and the steam channel are communicated with the heat supplier 6; a low-temperature heat medium channel is arranged outside and communicated with the second compressor 8, the second compressor 8 is also communicated with a third expander 9 through a second heat supply device 10, and the third expander 9 is also communicated with the outside through the low-temperature heat medium channel; the high-temperature heat exchanger 5 is also provided with a heat source medium channel communicated with the outside, the heat supplier 6 and the second heat supplier 10 are also respectively provided with a heated medium channel communicated with the outside, the mixing evaporator 7 is also provided with a heat source medium channel communicated with the outside, the preheater 17 is also provided with a heat source medium channel communicated with the outside, and the expander 2, the second expander 3 and the third expander 9 are connected with the compressor 1 and the second compressor 8 and transmit power.

(2) In the process, the condensate of the heat supply device 6 flows through the circulating pump 4 to be boosted, flows through the preheater 17 to absorb heat and be heated, and then enters the mixing evaporator 7; steam discharged by the expansion machine 2 enters the mixing evaporator 7 to be mixed with the condensate and release heat, an external heat source medium provides heat load for the condensate, and the condensate absorbs heat and is vaporized; the steam discharged by the mixed evaporator 7 enters the compressor 1 to increase the pressure and the temperature and enters the second expander 3 to reduce the pressure and do work respectively; the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 5 and absorbs heat, flows through the expander 2 and reduces the pressure to do work, and then enters the hybrid evaporator 7 to release heat and reduce the temperature; the steam discharged by the second expander 3 enters a heat supply device 6, releases heat to a heated medium and is condensed; the external low-temperature heat medium flows through the second compressor 8 to increase the pressure and the temperature, flows through the second heat supply device 10 to release heat, flows through the third expansion machine 9 to reduce the pressure and do work, and is discharged outwards; the heat source medium provides driving heat load through the high-temperature heat exchanger 5, the hybrid evaporator 7 and the preheater 10, the medium-temperature heat load is taken away by the heated medium through the heat supplier 6 and the second heat supplier 10, the low-temperature heat load is provided by the low-temperature heat medium through the inlet and outlet flow, and the work output by the expander 2, the second expander 3 and the third expander 9 is provided for the compressor 1 and the second compressor 8 as power, so that the dual-working-medium combined cycle compression heat pump is formed.

The dual-working-medium combined-cycle compression heat pump shown in fig. 8 is realized by:

(1) structurally, in the dual-working-medium combined cycle compression heat pump shown in fig. 1, a high-temperature heat regenerator is added, a steam channel of a compressor 1 is communicated with an expander 2 through a high-temperature heat exchanger 5 and adjusted to be communicated with the expander 2 through a steam channel of the compressor 1 and a high-temperature heat regenerator 18 and the high-temperature heat exchanger 5, and a steam channel of the expander 2 is communicated with a hybrid evaporator 7 and adjusted to be communicated with the expander 2 through a steam channel of the hybrid evaporator 18 and the hybrid evaporator 7.

(2) Compared with the dual working medium combined cycle compression heat pump shown in fig. 1, the difference in the flow is that the steam discharged from the compressor 1 flows through the high-temperature heat regenerator 18 and the high-temperature heat exchanger 5 and gradually absorbs heat to raise the temperature, and the steam discharged from the expander 2 flows through the high-temperature heat regenerator 18 to release heat and lower the temperature and then enters the hybrid evaporator 7, so that the dual working medium combined cycle compression heat pump is formed.

The dual-working-medium combined-cycle compression heat pump shown in fig. 9 is realized by:

(1) structurally, in the dual-working-medium combined cycle compression heat pump shown in fig. 5, a newly added compressor and a newly added high-temperature heat exchanger are added, a steam channel of the compressor 1 is communicated with the expander 2 through the high-temperature heat exchanger 5, the compressor 1 is communicated with the newly added compressor a through the high-temperature heat exchanger 5, the newly added compressor a is communicated with the expander 2 through the steam channel of the newly added high-temperature heat exchanger C, the newly added high-temperature heat exchanger C is communicated with the outside through a heat source medium channel, and the expander 2 is connected with the newly added compressor a and transmits power.

(2) Compared with the double-working-medium combined cycle compression heat pump shown in fig. 5, the difference of the flow is that the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 5 and absorbs heat, and then enters the newly-added compressor A to increase the pressure and the temperature; the steam discharged by the newly-added compressor A flows through the newly-added high-temperature heat exchanger C and absorbs heat, and then enters the expander 2 to reduce the pressure and do work; the expander 2 provides power for the newly-added compressor A, and the heat source medium provides driving heat load through the high-temperature heat exchanger 5, the newly-added high-temperature heat exchanger C and the mixed evaporator 7 respectively, so that the double-working-medium combined cycle compression heat pump is formed.

The dual-working-medium combined-cycle compression heat pump shown in fig. 10 is realized by:

(1) structurally, in the dual-working-medium combined-cycle compression heat pump shown in fig. 5, a new expansion machine and a new high-temperature heat exchanger are added, a steam channel of a compressor 1 is communicated with an expansion machine 2 through the high-temperature heat exchanger 5, the compressor 1 is adjusted to be communicated with a steam channel of the new expansion machine B through the high-temperature heat exchanger 5, the new expansion machine B is communicated with the expansion machine 2 through a new high-temperature heat exchanger C, the new high-temperature heat exchanger C is communicated with the outside through a heat source medium channel, and the new expansion machine B is connected with the compressor 1 and transmits power.

(2) Compared with the double-working medium combined cycle compression heat pump shown in fig. 5, the difference of the flow is that the steam discharged by the compressor 1 flows through the high-temperature heat exchanger 5 and absorbs heat, and then enters the new expansion machine B to reduce the pressure and do work; the steam discharged by the newly added expansion machine B flows through the newly added high-temperature heat exchanger C and absorbs heat, and then enters the expansion machine 2 to reduce the pressure and do work; the work output by the new expansion machine B is provided for the compressor 1 as power, and the heat source medium provides driving heat load through the high-temperature heat exchanger 5, the new high-temperature heat exchanger C and the mixed evaporator 7 respectively, so that the double-working-medium combined cycle compression heat pump is formed.

The dual-working-medium combined-cycle compression heat pump shown in fig. 11 is realized by:

(1) structurally, in the dual-working-medium combined cycle compression heat pump shown in fig. 5, a high-temperature heat regenerator, a newly-added compressor and a newly-added high-temperature heat exchanger are added, a steam channel of a compressor 1 is communicated with an expander 2 through the high-temperature heat exchanger 5 and adjusted to be that the compressor 1 is provided with a steam channel which is communicated with the newly-added compressor A through the high-temperature heat regenerator 18 and the high-temperature heat exchanger 5, the newly-added compressor A is provided with a steam channel which is communicated with the expander 2 through the newly-added high-temperature heat exchanger C, the expander 2 is provided with a steam channel which is communicated with a hybrid evaporator 7 through the mixed evaporator 7 and adjusted to be that the expander 2 is provided with a steam channel which is communicated with the hybrid evaporator 7 through the high-temperature heat regenerator 18, the newly-added high-temperature heat exchanger C is also provided with a heat source medium channel which is communicated with the outside, and the expander 2 is connected with the newly-added compressor A and transmits power.

(2) Compared with the double-working-medium combined cycle compression heat pump shown in fig. 5, the difference in the flow is that the steam discharged by the compressor 1 flows through the high-temperature heat regenerator 18 and the high-temperature heat exchanger 5 and gradually absorbs heat, and then enters the newly-added compressor A to increase the pressure and the temperature; the steam discharged by the newly-added compressor A flows through the newly-added high-temperature heat exchanger C and absorbs heat, and then enters the expander 2 to reduce the pressure and do work; steam discharged by the expander 2 flows through the high-temperature heat regenerator 1, releases heat and cools, and then enters the hybrid evaporator 7; the expander 2 provides power for the newly-added compressor A, and the heat source medium provides driving heat load through the high-temperature heat exchanger 5, the newly-added high-temperature heat exchanger C and the mixed evaporator 7 respectively, so that the double-working-medium combined cycle compression heat pump is formed.

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

(1) provides a new idea and a new technology for utilizing the temperature difference.

(2) The non-phase-change, low-pressure and high-temperature operation mode is adopted in the high-temperature area, the temperature difference loss between the temperature-changing heat source and the circulating medium is greatly reduced, the temperature difference is fully utilized, and the performance index is greatly improved.

(3) The working pressure is reduced, the system safety performance is improved, and the application range is expanded.

(4) And a mixed evaporator is adopted, so that the heat transfer link is reduced, and the heat efficiency is improved.

(5) Double working medium circulation greatly expands the range of working parameters.

(6) Can realize cold supply or heat supply independently, and can provide cold and heat cogeneration, cold and power cogeneration, heat and power cogeneration or cold and heat power cogeneration simultaneously.

(7) The effective utilization of heat energy (temperature difference) is realized independently or the effective utilization of heat energy and mechanical energy is realized simultaneously.

(8) And heat supply at two ends is realized in the flow of the compression heat pump, so that the performance index is improved, and the energy utilization rate is improved.

(9) The reasonable technical scheme is provided for effectively realizing the reasonable utilization of non-high-quality fuel, a high-temperature heat source and a variable-temperature heat source in the refrigeration/heat supply field and simultaneously considering the power supply or the effective utilization of mechanical energy.

Claims

1. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander and a second heat supply device; the heat supplier (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through the circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through the high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supplier (6); a low-temperature heat medium channel is arranged outside and communicated with the second compressor (8), the second compressor (8) is also provided with a low-temperature heat medium channel which is communicated with a third expander (9) through a second heat supply device (10), and the third expander (9) is also provided with a low-temperature heat medium channel which is communicated with the outside; the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power, so that the double-working-medium combined cycle compression heat pump is formed.

2. A dual working medium combined cycle compression heat pump, in the dual working medium combined cycle compression heat pump of claim 1, the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1), the second compressor (8) and the circulating pump (4) and transmit power, so as to form the dual working medium combined cycle compression heat pump.

3. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device and a low-temperature heat regenerator; the heat supplier (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through the circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through the high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supplier (6); a low-temperature heat medium channel is arranged outside and is communicated with a second compressor (8) through a low-temperature heat regenerator (11), the second compressor (8) is also provided with a low-temperature heat medium channel which is communicated with a third expander (9) through a second heat supplier (10) and the low-temperature heat regenerator (11), and the third expander (9) is also provided with a low-temperature heat medium channel which is communicated with the outside; the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power, so that the double-working-medium combined cycle compression heat pump is formed.

4. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device and a low-temperature heat exchanger; the heat supplier (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through the circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through the high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supplier (6); the second compressor (8) is provided with a circulating medium channel which is communicated with a third expander (9) through a second heat supply device (10), and the third expander (9) is also provided with a circulating medium channel which is communicated with the second compressor (8) through a low-temperature heat exchanger (12); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the low-temperature heat exchanger (12) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power to form the dual-working-medium combined cycle compression heat pump.

5. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator and a low-temperature heat exchanger; the heat supplier (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through the circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through the high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supplier (6); the second compressor (8) is provided with a circulating medium channel which is communicated with a third expander (9) through a second heat supply device (10) and a low-temperature heat regenerator (11), and the third expander (9) is also provided with a circulating medium channel which is communicated with the second compressor (8) through a low-temperature heat exchanger (12) and the low-temperature heat regenerator (11); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the low-temperature heat exchanger (12) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power to form the dual-working-medium combined cycle compression heat pump.

6. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a second heat supplier, an evaporator and a throttle valve; the heat supplier (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through the circulating pump (4), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through the high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supplier (6); the second compressor (8) is provided with a circulating medium channel which is communicated with the second heat supply device (10), the second heat supply device (10) is also provided with a circulating medium channel which is communicated with the evaporator (13) through a throttle valve (14), and the evaporator (13) is also provided with a circulating medium channel which is communicated with the second compressor (8); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the evaporator (13) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2) and the second expander (3) are connected with the compressor (1) and the second compressor (8) and transmit power to form a dual-working-medium combined cycle compression heat pump.

7. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a heat regenerator and a second circulating pump; the heat supply device (6) is provided with a condensate pipeline which is communicated with a heat regenerator (15) through a circulating pump (4), a second expander (3) is provided with a steam extraction channel which is communicated with the heat regenerator (15), the heat regenerator (15) is also provided with a condensate pipeline which is communicated with a mixed evaporator (7) through a second circulating pump (16), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (7), the mixed evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); a low-temperature heat medium channel is arranged outside and communicated with the second compressor (8), the second compressor (8) is also provided with a low-temperature heat medium channel which is communicated with a third expander (9) through a second heat supply device (10), and the third expander (9) is also provided with a low-temperature heat medium channel which is communicated with the outside; the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power, so that the double-working-medium combined cycle compression heat pump is formed.

8. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator, a heat regenerator and a second circulating pump; the heat supply device (6) is provided with a condensate pipeline which is communicated with a heat regenerator (15) through a circulating pump (4), a second expander (3) is provided with a steam extraction channel which is communicated with the heat regenerator (15), the heat regenerator (15) is also provided with a condensate pipeline which is communicated with a mixed evaporator (7) through a second circulating pump (16), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (7), the mixed evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); a low-temperature heat medium channel is arranged outside and is communicated with a second compressor (8) through a low-temperature heat regenerator (11), the second compressor (8) is also provided with a low-temperature heat medium channel which is communicated with a third expander (9) through a second heat supplier (10) and the low-temperature heat regenerator (11), and the third expander (9) is also provided with a low-temperature heat medium channel which is communicated with the outside; the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power, so that the double-working-medium combined cycle compression heat pump is formed.

9. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat exchanger, a heat regenerator and a second circulating pump; the heat supply device (6) is provided with a condensate pipeline which is communicated with a heat regenerator (15) through a circulating pump (4), a second expander (3) is provided with a steam extraction channel which is communicated with the heat regenerator (15), the heat regenerator (15) is also provided with a condensate pipeline which is communicated with a mixed evaporator (7) through a second circulating pump (16), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (7), the mixed evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); the second compressor (8) is provided with a circulating medium channel which is communicated with a third expander (9) through a second heat supply device (10), and the third expander (9) is also provided with a circulating medium channel which is communicated with the second compressor (8) through a low-temperature heat exchanger (12); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the low-temperature heat exchanger (12) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power to form the dual-working-medium combined cycle compression heat pump.

10. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator, a low-temperature heat exchanger, a heat regenerator and a second circulating pump; the heat supply device (6) is provided with a condensate pipeline which is communicated with a heat regenerator (15) through a circulating pump (4), a second expander (3) is provided with a steam extraction channel which is communicated with the heat regenerator (15), the heat regenerator (15) is also provided with a condensate pipeline which is communicated with a mixed evaporator (7) through a second circulating pump (16), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (7), the mixed evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); the second compressor (8) is provided with a circulating medium channel which is communicated with a third expander (9) through a second heat supply device (10) and a low-temperature heat regenerator (11), and the third expander (9) is also provided with a circulating medium channel which is communicated with the second compressor (8) through a low-temperature heat exchanger (12) and the low-temperature heat regenerator (11); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the low-temperature heat exchanger (12) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power to form the dual-working-medium combined cycle compression heat pump.

11. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a second heat supplier, an evaporator, a throttle valve, a heat regenerator and a second circulating pump; the heat supply device (6) is provided with a condensate pipeline which is communicated with a heat regenerator (15) through a circulating pump (4), a second expander (3) is provided with a steam extraction channel which is communicated with the heat regenerator (15), the heat regenerator (15) is also provided with a condensate pipeline which is communicated with a mixed evaporator (7) through a second circulating pump (16), the expander (2) is provided with a steam channel which is communicated with the mixed evaporator (7), the mixed evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); the second compressor (8) is provided with a circulating medium channel which is communicated with the second heat supply device (10), the second heat supply device (10) is also provided with a circulating medium channel which is communicated with the evaporator (13) through a throttle valve (14), and the evaporator (13) is also provided with a circulating medium channel which is communicated with the second compressor (8); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the evaporator (13) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2) and the second expander (3) are connected with the compressor (1) and the second compressor (8) and transmit power to form a dual-working-medium combined cycle compression heat pump.

12. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device and a preheater; the heat supply device (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through a circulating pump (4) and a preheater (17), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); a low-temperature heat medium channel is arranged outside and communicated with the second compressor (8), the second compressor (8) is also provided with a low-temperature heat medium channel which is communicated with a third expander (9) through a second heat supply device (10), and the third expander (9) is also provided with a low-temperature heat medium channel which is communicated with the outside; the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the preheater (17) is also provided with a heat source medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power to form the dual-working-medium combined cycle compression heat pump.

13. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator and a preheater; the heat supply device (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through a circulating pump (4) and a preheater (17), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); a low-temperature heat medium channel is arranged outside and is communicated with a second compressor (8) through a low-temperature heat regenerator (11), the second compressor (8) is also provided with a low-temperature heat medium channel which is communicated with a third expander (9) through a second heat supplier (10) and the low-temperature heat regenerator (11), and the third expander (9) is also provided with a low-temperature heat medium channel which is communicated with the outside; the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the preheater (17) is also provided with a heat source medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power to form the dual-working-medium combined cycle compression heat pump.

14. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat exchanger and a preheater; the heat supply device (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through a circulating pump (4) and a preheater (17), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); the second compressor (8) is provided with a circulating medium channel which is communicated with a third expander (9) through a second heat supply device (10), and the third expander (9) is also provided with a circulating medium channel which is communicated with the second compressor (8) through a low-temperature heat exchanger (12); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the preheater (17) is also provided with a heat source medium channel communicated with the outside, the low-temperature heat exchanger (12) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power to form a dual-working-medium combined cycle compression heat pump.

15. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supply device, a mixed evaporator, a second compressor, a third expander, a second heat supply device, a low-temperature heat regenerator, a low-temperature heat exchanger and a preheater; the heat supply device (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through a circulating pump (4) and a preheater (17), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); the second compressor (8) is provided with a circulating medium channel which is communicated with a third expander (9) through a second heat supply device (10) and a low-temperature heat regenerator (11), and the third expander (9) is also provided with a circulating medium channel which is communicated with the second compressor (8) through a low-temperature heat exchanger (12) and the low-temperature heat regenerator (11); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the preheater (17) is also provided with a heat source medium channel communicated with the outside, the low-temperature heat exchanger (12) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2), the second expander (3) and the third expander (9) are connected with the compressor (1) and the second compressor (8) and transmit power to form a dual-working-medium combined cycle compression heat pump.

16. The double-working medium combined cycle compression heat pump mainly comprises a compressor, an expander, a second expander, a circulating pump, a high-temperature heat exchanger, a heat supplier, a mixed evaporator, a second compressor, a second heat supplier, an evaporator, a throttle valve and a preheater; the heat supply device (6) is provided with a condensate pipeline which is communicated with the mixing evaporator (7) through a circulating pump (4) and a preheater (17), the expander (2) is provided with a steam channel which is communicated with the mixing evaporator (7), the mixing evaporator (7) is also provided with a steam channel which is respectively communicated with the compressor (1) and the second expander (3), the compressor (1) is also provided with a steam channel which is communicated with the expander (2) through a high-temperature heat exchanger (5), and the second expander (3) is also provided with a steam channel which is communicated with the heat supply device (6); the second compressor (8) is provided with a circulating medium channel which is communicated with the second heat supply device (10), the second heat supply device (10) is also provided with a circulating medium channel which is communicated with the evaporator (13) through a throttle valve (14), and the evaporator (13) is also provided with a circulating medium channel which is communicated with the second compressor (8); the high-temperature heat exchanger (5) is also provided with a heat source medium channel communicated with the outside, the heat supplier (6) and the second heat supplier (10) are also respectively provided with a heated medium channel communicated with the outside, the preheater (17) is also provided with a heat source medium channel communicated with the outside, the evaporator (13) is also provided with a low-temperature heat medium channel communicated with the outside, and the expander (2) and the second expander (3) are connected with the compressor (1) and the second compressor (8) and transmit power to form a double-working-medium combined cycle compression heat pump.

17. A double-working-medium combined cycle compression heat pump is characterized in that in any one of the double-working-medium combined cycle compression heat pumps disclosed by claims 1-16, a heat source medium channel is additionally arranged on a mixing evaporator (7) and is communicated with the outside to form the double-working-medium combined cycle compression heat pump.

18. A dual working medium combined cycle compression heat pump is characterized in that in any one of the dual working medium combined cycle compression heat pumps disclosed by claims 1-17, a high-temperature heat regenerator is added, a steam channel of a compressor (1) is communicated with an expander (2) through a high-temperature heat exchanger (5) and adjusted to be that the compressor (1) is provided with a steam channel which is communicated with the expander (2) through the high-temperature heat regenerator (18) and the high-temperature heat exchanger (5), and the expander (2) is provided with a steam channel which is communicated with a hybrid evaporator (7) and adjusted to be that the expander (2) is provided with a steam channel which is communicated with the hybrid evaporator (7) through the high-temperature heat regenerator (18), so that the dual working medium combined cycle compression heat pump is formed.

19. A dual working medium combined cycle compression heat pump is characterized in that in any dual working medium combined cycle compression heat pump of claims 1-17, a newly added compressor and a newly added high temperature heat exchanger are added, a steam channel of the compressor (1) is communicated with an expander (2) through the high temperature heat exchanger (5) and adjusted to be that the compressor (1) is provided with a steam channel which is communicated with the newly added compressor (A) through the high temperature heat exchanger (5), the newly added compressor (A) is provided with a steam channel which is communicated with the expander (2) through the newly added high temperature heat exchanger (C), the newly added high temperature heat exchanger (C) is also provided with a heat source medium channel which is communicated with the outside, and the expander (2) is connected with the newly added compressor (A) and transmits power to form the dual working medium combined cycle compression heat pump.

20. A dual-working medium combined cycle compression heat pump is characterized in that a new expansion machine and a new high-temperature heat exchanger are added in any dual-working medium combined cycle compression heat pump of claims 1-17, a steam channel of a compressor (1) is communicated with an expansion machine (2) through the high-temperature heat exchanger (5) and adjusted to be that the compressor (1) is provided with a steam channel which is communicated with a new expansion machine (B) through the high-temperature heat exchanger (5), the new expansion machine (B) is further provided with a steam channel which is communicated with the expansion machine (2) through the new high-temperature heat exchanger (C), the new high-temperature heat exchanger (C) is further provided with a heat source medium channel which is communicated with the outside, and the new expansion machine (B) is connected with the compressor (1) and transmits power to form the dual-working medium combined cycle compression heat pump.

21. A dual-working medium combined cycle compression heat pump is characterized in that in any one of the dual-working medium combined cycle compression heat pumps described in claims 1-17, a high-temperature heat regenerator, a newly-added compressor and a newly-added high-temperature heat exchanger are added, a steam channel of the compressor (1) is communicated with an expander (2) through the high-temperature heat exchanger (5) and adjusted to be communicated with the newly-added compressor (A) through the high-temperature heat regenerator (18) and the high-temperature heat exchanger (5), a steam channel of the newly-added compressor (A) is communicated with the expander (2) through the newly-added high-temperature heat exchanger (C), a steam channel of the expander (2) is communicated with a hybrid evaporator (7) and adjusted to be communicated with the expander (2) through the steam channel of the high-temperature heat regenerator (18) and the hybrid evaporator (7), and a heat source medium channel of the newly-added high-temperature heat exchanger (C) is communicated, the expansion machine (2) is connected with the newly-added compressor (A) and transmits power to form the double-working-medium combined cycle compression heat pump.

22. A dual-working medium combined cycle compression heat pump is characterized in that in any one of the dual-working medium combined cycle compression heat pumps described in claims 1-17, a high-temperature heat regenerator, a new expansion machine and a new high-temperature heat exchanger are added, a steam channel of a compressor (1) is communicated with an expansion machine (2) through the high-temperature heat exchanger (5) and adjusted to be that the compressor (1) is provided with a steam channel which is communicated with a new expansion machine (B) through the high-temperature heat regenerator (18) and the high-temperature heat exchanger (5), the new expansion machine (B) is further provided with a steam channel which is communicated with the expansion machine (2) through the new high-temperature heat exchanger (C), the expansion machine (2) is provided with a steam channel which is communicated with a hybrid evaporator (7) through the high-temperature heat regenerator (18), and the new high-temperature heat exchanger (C) is also provided with a medium channel which is communicated with an external heat source, the new expansion machine (B) is connected with the compressor (1) and transmits power to form a double-working-medium combined cycle compression heat pump.

23. A dual-working medium combined cycle compression heat pump is characterized in that a power machine is added in the dual-working medium combined cycle compression heat pump of any one of claims 1 to 22, the power machine is connected with a second compressor (8) and provides power for the second compressor (8), and a dual-working medium combined cycle compression heat pump driven by additional external power is formed.

24. A dual working medium combined cycle compression heat pump is characterized in that a working machine is added in the dual working medium combined cycle compression heat pump of any one of claims 1 to 22, and an expansion machine (2) is connected with the working machine and supplies power to the working machine to form the dual working medium combined cycle compression heat pump which additionally supplies power load to the outside.