Multi-energy coupling heat supply system

Abstract

The utility model discloses a multi-energy coupling heat supply system, which belongs to the technical field of heat supply and comprises a water source heat pump arranged at one end, close to an air source heat pump, of a heat supply pipeline, and an electric heating device arranged at one end, close to a user heat supply system, of the heat supply pipeline; the air source heat pump is used for heating a heat supply medium conveyed by the user heat supply system through a water pump and returning the heated heat supply medium to the user heat supply system through a heat supply pipeline; the water source heat pump is used for heating a heat supply medium conveyed by the user heat supply system through a water pump and returning the heated heat supply medium to the user heat supply system through a heat supply pipeline; the electric heating device is used for heating a heat supply medium conveyed by the user heat supply system through the water pump and returning the heated heat supply medium to the user heat supply system through the heat supply pipeline. According to the system, the air source heat pump is coupled with the water source heat pump, meanwhile, the electric heating device is arranged, energy is comprehensively utilized for heat supply, and the energy utilization rate is greatly increased.

Description

Technical Field

[0001] The present application belongs to the field of heating technology, and specifically relates to a multi-energy coupling heating system. Background Art

[0002] With the development of heating technology, there are more choices for heat sources and heat transfer media in heating systems. How to dispatch heat sources and heat transfer media to achieve efficient and coordinated operation of heating systems is a technical problem that needs to be solved urgently. Utility Model Content

[0003] The purpose of this application is to provide a multi-energy coupling heating system to solve the problem of low efficiency of existing heating systems.

[0004] According to a first aspect of an embodiment of the present application, there is provided a multi-energy coupling heating system, including an air source heat pump, a water source heat pump, an electric heating device and a heating pipeline;

[0005] One end of the heating pipeline is connected to the air source heat pump, and the other end is connected to the user's heating system. The water source heat pump is arranged at one end of the heating pipeline close to the air source heat pump, and the electric heating device is arranged at one end of the heating pipeline close to the user's heating system;

[0006] The air source heat pump is used to heat the heating medium delivered by the user heating system through the water pump (12), and return the heated heating medium to the user heating system through the heating pipeline;

[0007] The water source heat pump is used to heat the heating medium delivered by the user's heating system through the water pump (12), and return the heated heating medium to the user's heating system through the heating pipeline;

[0008] The electric heating device is used to heat the heating medium transported by the user's heating system through the water pump (12), and return the heated heating medium to the user's heating system through the heating pipeline.

[0009] In some embodiments, the air source heat pump comprises an air circulation loop and an air source heat pump circulation pump (13);

[0010] The air circulation loop comprises an air source heat pump condenser (18), an air source heat pump throttling device (10), an air source heat pump evaporator (19) and a first compressor which are connected in sequence;

[0011] The water pump (12) and the inlet of the air source heat pump condenser (18) are connected via a first valve (1);

[0012] The inlet of the air source heat pump circulation pump (13) is connected to the outlet of the air source heat pump condenser (18) through the ninth valve (9), and the outlet of the air source heat pump circulation pump (13) is connected to the inlet of the air source heat pump condenser (18);

[0013] The outlet of the air source heat pump condenser (18) is connected to the water inlet of the user heating system through the fourth valve (4).

[0014] In some embodiments, the water source heat pump includes a water circulation loop;

[0015] The water circulation loop includes a water source heat pump condenser (20), a water source heat pump throttling device (11), a water source heat pump evaporator (21), and a second compressor connected in sequence;

[0016] The water pump (12) and the inlet of the water source heat pump condenser (20) are connected through the second valve (2);

[0017] The outlet of the water source heat pump condenser (20) is connected to the water inlet of the user heating system through the fifth valve (5).

[0018] In some embodiments, the water source heat pump evaporator (21) is arranged between the ninth valve (9) and the air source heat pump circulation pump, and the air source heat pump is also used to supply heat to the water source heat pump evaporator (21).

[0019] In some embodiments, the electric heating device includes an electric heating circulation loop;

[0020] The electric heating circulation loop includes a heat exchange device, an electric boiler (17), and an electric boiler (17) circulation pump (14) connected in sequence;

[0021] The water pump (12) and the inlet of the heat exchange device are connected through the third valve (3);

[0022] The outlet of the heat exchange device is connected to the water inlet of the user heating system through the sixth valve (6).

[0023] In some embodiments, a heat storage device is further included;

[0024] The heat storage device includes a hot water tank (16) and a hot water pump (15);

[0025] The water inlet of the hot water tank (16) is connected to the water inlet of the user heating system through the seventh valve (7);

[0026] The water outlet of the hot water tank (16) is connected to the water inlet of the user heating system through the eighth valve (8);

[0027] The hot water pump (15) is arranged between the hot water tank (16) and the eighth valve (8).

[0028] In some embodiments, the heat storage device is arranged between the sixth valve (6) and the water inlet of the user heating system.

[0029] In some embodiments, the air source heat pump is used to heat the heating medium to a first preset temperature;

[0030] The water source heat pump is used to heat the heating medium to a second preset temperature;

[0031] The electric heating device is used to heat the heating medium to a third preset temperature;

[0032] Wherein, the first preset temperature is less than the second preset temperature, and the third preset temperature is less than the third preset temperature.

[0033] In some embodiments, the air source heat pump is turned on at a first ambient temperature;

[0034] The water source heat pump is turned on at a second ambient temperature;

[0035] The electric heating device is turned on at a third ambient temperature;

[0036] Wherein, the first ambient temperature is greater than the second ambient temperature, and the second ambient temperature is greater than the third ambient temperature.

[0037] The above technical solution of the present application has the following beneficial technical effects:

[0038] The multi - energy coupled heating system provided by the embodiments of the present application couples an air source heat pump and a water source heat pump, and at the same time configures an electric heating device to carry out comprehensive energy utilization for heating, greatly improving the energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of a multi - energy coupled heating system in the first exemplary embodiment of the present application.

[0040] Figure 2 It is a schematic structural diagram of a multi - energy coupled heating system in the second exemplary embodiment of the present application.

[0041] In the figure,

[0042] 1. First valve; 2. Second valve; 3. Third valve; 4. Fourth valve; 5. Fifth valve; 6. Sixth valve; 7. Seventh valve; 8. Eighth valve; 9. Ninth valve; 10. Throttling device of air source heat pump; 11. Throttling device of water source heat pump; 12. Water pump; 13. Circulation pump of air source heat pump; 14. Circulation pump of electric boiler; 15. Hot water pump; 16. Hot water tank; 17. Electric boiler; 18. Condenser of air source heat pump; 19. Evaporator of air source heat pump; 20. Condenser of water source heat pump; 21. Evaporator of water source heat pump. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of this application clearer, the following further elaborates on this application in detail in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this application. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of this application.

[0044] The following elaborates in detail on the multi - energy coupled heating system provided by the embodiments of this application in conjunction with the accompanying drawings, through specific embodiments and their application scenarios.

[0045] Figure 1 It is a schematic structural diagram of a multi - energy coupled heating system in the first exemplary embodiment of this application. As Figure 1 shown, in the first aspect of the embodiments of this application, a multi - energy coupled heating system is provided, including an air source heat pump, a water source heat pump, and an electric heating device; the air source heat pump is used to heat the heating medium transported by the water pump 12 in the user heating system and return the heated heating medium to the user heating system; the water source heat pump is used to heat the heating medium transported by the water pump 12 in the user heating system and return the heated heating medium to the user heating system; the electric heating device is used to heat the heating medium transported by the water pump 12 in the user heating system and return the heated heating medium to the user heating system.

[0046] The multi - energy coupled heating system provided in this embodiment couples the air source heat pump and the water source heat pump, and at the same time configures an electric heating device to conduct comprehensive energy utilization for heating, greatly improving the energy utilization rate.

[0047] Figure 2 It is a schematic structural diagram of a multi - energy coupled heating system in the second exemplary embodiment of this application. As Figure 2As shown in the figure, in the second aspect of the embodiments of the present application, a multi-energy coupled heating system is provided, which includes an air source heat pump, a water source heat pump, and an electric heating device; the air source heat pump is used to heat the heating medium transported by the water pump 12 in the user heating system, and return the heated heating medium to the user heating system; the water source heat pump is used to heat the heating medium transported by the water pump 12 in the user heating system, and return the heated heating medium to the user heating system; the electric heating device is used to heat the heating medium transported by the water pump 12 in the user heating system, and return the heated heating medium to the user heating system.

[0048] The air source heat pump includes an air circulation loop and an air source heat pump circulation pump 13; the air circulation loop includes an air source heat pump condenser 18, an air source heat pump throttling device 10, an air source heat pump evaporator 19, and a first compressor connected in sequence; the inlet of the water pump 12 and the air source heat pump condenser 18 are connected through a first valve 1;

[0049] The inlet of the air source heat pump circulation pump 13 is connected to the outlet of the air source heat pump condenser 18 through a ninth valve 7, and the outlet of the air source heat pump circulation pump 13 is connected to the inlet of the air source heat pump condenser 18; the outlet of the air source heat pump condenser 18 is connected to the water inlet of the user heating system through a fourth valve 4.

[0050] The water source heat pump includes a water circulation loop; the water circulation loop includes a water source heat pump condenser 20, a water source heat pump throttling device 11, a water source heat pump evaporator, and a second compressor connected in sequence; the inlet of the water pump 12 and the water source heat pump condenser 20 are connected through a second valve 2; the outlet of the water source heat pump condenser 20 is connected to the water inlet of the user heating system through a fifth valve 5.

[0051] The water source heat pump evaporator is arranged between the ninth valve 7 and the air source heat pump circulation pump.

[0052] The electric heating device includes an electric heating circulation loop; the electric heating circulation loop includes a heat exchange device, an electric boiler 17, and an electric boiler 17 circulation pump 14 connected in sequence; the inlet of the water pump 12 and the heat exchange device are connected through a third valve 3; the outlet of the heat exchange device is connected to the water inlet of the user heating system through a sixth valve 6.

[0053] It further includes a heat storage device; the heat storage device includes a hot water tank 16 and a hot water pump 15; the water inlet of the hot water tank 16 is connected to the water inlet of the user heating system through a seventh valve 7; the water outlet of the hot water tank 16 is connected to the water inlet of the user heating system through an eighth valve 7; the hot water pump 15 is arranged between the hot water tank 16 and the eighth valve 7

[0054] The heat storage device is arranged between the sixth valve 6 and the water inlet of the user heating system.

[0055] An air source heat pump is used to heat the heating medium to a first preset temperature; a water source heat pump is used to heat the heating medium to a second preset temperature; an electric heating device is used to heat the heating medium to a third preset temperature; wherein, the first preset temperature is less than the second preset temperature, and the third preset temperature is less than the third preset temperature.

[0056] During actual use, in the initial and final stages of heating, the low-temperature water returned from the user heating system is transported through valve 1 to the air source heat pump, heated by the air source heat pump to raise the water temperature to about 50 degrees, and sent to the user's heating through valve 4. In the middle stage of heating, the low-temperature water returned from the user heating system is transported through valve 2 to the water source heat pump, heated by the water source heat pump to raise the water temperature to about 60 degrees, and sent to the user's heating through valve 5. At the same time, during the low heat consumption period, a part of the heat is stored in the water tank through valve 7 and sent to the user's heating through valve 8 during the high heat consumption peak period; at this time, the hot water generated by the air source heat pump provides heat source for the water source heat pump through valve 9. In the middle stage of heating, especially in the deep winter period, in addition to transporting the low-temperature water returned from the user heating system through valve 2 to the water source heat pump, heating it by the water source heat pump to raise the water temperature to about 60 degrees and sending it to the user's heating through valve 5; during the low valley electricity period, the low-temperature water returned from the user heating system is also transported through valve 3 to the electric boiler, and the water temperature is raised to 70 - 90 degrees by using the low valley electricity in the electric boiler, stored in the water tank through valve 6, and transported to the user heating through a pump during other heating demand peak periods.

[0057] A heating system for comprehensive energy utilization provided by this embodiment couples an air source heat pump with a water source heat pump, and at the same time configures an electric boiler, stores heat using low valley electricity, conducts comprehensive energy utilization for heating, greatly improves the energy utilization rate, and reduces the heating cost. In this application, an air source heat pump is coupled with a water source heat pump, and at the same time an electric boiler is configured to conduct comprehensive energy utilization for heating, greatly improving the energy utilization rate and reducing the heating cost.

[0058] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A multi-energy coupling heating system, characterized in that: Including air source heat pump, water source heat pump, electric heating device and heating pipeline; One end of the heating pipeline is connected to the air source heat pump, and the other end is connected to the user's heating system. The water source heat pump is arranged at one end of the heating pipeline close to the air source heat pump, and the electric heating device is arranged at one end of the heating pipeline close to the user's heating system; The air source heat pump is used to heat the heating medium delivered by the user heating system through the water pump (12), and return the heated heating medium to the user heating system through the heating pipeline; The water source heat pump is used to heat the heating medium delivered by the user's heating system through the water pump (12), and return the heated heating medium to the user's heating system through the heating pipeline; The electric heating device is used to heat the heating medium transported by the user's heating system through the water pump (12), and return the heated heating medium to the user's heating system through the heating pipeline.

2. A multi-energy coupling heating system according to claim 1, characterized in that: The air source heat pump comprises an air circulation loop and an air source heat pump circulation pump (13); The air circulation loop comprises an air source heat pump condenser (18), an air source heat pump throttling device (10), an air source heat pump evaporator (19) and a first compressor which are connected in sequence; The water pump (12) and the inlet of the air source heat pump condenser (18) are connected via a first valve (1); The inlet of the air source heat pump circulation pump (13) is connected to the outlet of the air source heat pump condenser (18) through a ninth valve (9), and the outlet of the air source heat pump circulation pump (13) is connected to the inlet of the air source heat pump condenser (18); The outlet of the air source heat pump condenser (18) is connected to the water inlet of the user's heating system through a fourth valve (4).

3. A multi-energy coupling heating system according to claim 2, characterized in that: The water source heat pump comprises a water circulation loop; The water circulation loop comprises a water source heat pump condenser (20), a water source heat pump throttling device (11), a water source heat pump evaporator (21), and a second compressor which are connected in sequence; The water pump (12) and the inlet of the water source heat pump condenser (20) are connected via a second valve (2); The outlet of the water source heat pump condenser (20) is connected to the water inlet of the user's heating system through a fifth valve (5).

4. A multi-energy coupling heating system according to claim 3, characterized in that: The water source heat pump evaporator (21) is arranged between the ninth valve (9) and the air source heat pump circulation pump, and the air source heat pump is also used to supply heat to the water source heat pump evaporator (21).

5. The multi-energy coupling heating system according to claim 1, characterized in that: The electric heating device comprises an electric heating circulation loop; The electric heat circulation loop comprises a heat exchange device, an electric boiler (17) and an electric boiler (17) circulation pump (14) which are connected in sequence; The water pump (12) and the inlet of the heat exchange device are connected via a third valve (3); The outlet of the heat exchange device is connected to the water inlet of the user's heating system through a sixth valve (6).

6. A multi-energy coupling heating system according to claim 5, characterized in that: Also included is a heat storage device; The heat storage device comprises a hot water tank (16) and a hot water pump (15); The water inlet of the hot water tank (16) is connected to the water inlet of the user's heating system via a seventh valve (7); The water outlet of the hot water tank (16) is connected to the water inlet of the user's heating system via an eighth valve (8); The hot water pump (15) is arranged between the hot water tank (16) and the eighth valve (8).

7. A multi-energy coupling heating system according to claim 6, characterized in that: The heat storage device is arranged between the sixth valve (6) and the water inlet of the user's heating system.

8. The multi-energy coupling heating system according to claim 1, characterized in that: The air source heat pump is used to heat the heating medium to a first preset temperature; The water source heat pump is used to heat the heating medium to a second preset temperature; The electric heating device is used to heat the heat supply medium to a third preset temperature; The first preset temperature is lower than the second preset temperature, and the third preset temperature is lower than the third preset temperature.

9. The multi-energy coupling heating system according to claim 1, characterized in that: The air source heat pump is turned on at a first ambient temperature; The water source heat pump is turned on at a second ambient temperature; The electric heating device is turned on at a third ambient temperature; The first ambient temperature is greater than the second ambient temperature, and the second ambient temperature is greater than the third ambient temperature.

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