Regional comprehensive energy heat supply system based on multi-energy complementation

Abstract

The utility model relates to a regional comprehensive energy heat supply system based on multi-energy complementation, which comprises a hot water supply main pipeline, a solar heating system, a heat pump system, a gas / fire coal heating system and an electric heating system, and is technically characterized in that the electric heating system is connected with a wind power generation system; the solar heating system, the heat pump system, the fuel gas / fire coal heating system and the electric heating system are sequentially used for heating, in the process, the solar heating system and the heat pump system serve as clean energy for preheating, the fuel gas / fire coal heating system and the electric heating system strengthen heating, and high-temperature heat supply is achieved. And the temperature of the hot water shunted from the third shunting pipeline, the second shunting pipeline and the first shunting pipeline is sequentially reduced, and the hot water can be shunted to different demand areas, so that different heat supply according to specific heat energy demands is realized, the heat supply pressure is reduced, and heat energy waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heating systems, and in particular to a regional comprehensive energy heating system based on multi-energy complementarity. Background Art

[0002] At present, the heat source for centralized heating comes from coal-fired power plants or gas-fired power plants. After the high-temperature and high-pressure steam (or hot water) is transported to the heat exchange station through pipelines, the hot water generated is sent to the heating terminal. This heating method has high carbon emissions and causes serious environmental pollution.

[0003] CN 212339369 U discloses a regional comprehensive energy heating system based on multi-energy complementation, which includes at least two of a photothermal system, a heat pump system, an electric boiler, a gas boiler, and a gas trigeneration system, wherein: the photothermal system is used to generate hot water for users; the heat pump system and the electric boiler are used to be connected to an external power grid to generate hot water for users; the gas boiler and the gas trigeneration system are connected to a natural gas pipeline to generate hot water for users. The system is based on the coordinated multi-energy complementation of heat sources such as natural gas, electricity, and photovoltaics, and is intended to meet the heating needs of regional users. However, there are the following problems when using it: different users have different water temperatures, and differential heating cannot be achieved, which easily causes heat energy waste. Utility Model Content

[0004] The purpose of the utility model is to provide a regional comprehensive energy heating system based on multi-energy complementarity, which has a reasonable structure and reliable use to solve the above-mentioned problems, realizes differentiated heating according to specific thermal energy needs, reduces heating pressure, and avoids waste of thermal energy.

[0005] The technical solution of the utility model is:

[0006] A regional integrated energy heating system based on multi-energy complementarity, comprising a hot water supply main pipeline, a solar heating system, a heat pump system, a gas / coal-fired heating system and an electric heating system, the technical key points of which are: the electric heating system is connected to a wind power generation system, the hot water supply main pipeline is provided with a first heat exchanger, a second heat exchanger, a third heat exchanger and a fourth heat exchanger from front to back, the hot water supply main pipeline is provided with a first shunt pipeline on the pipe section between the first heat exchanger and the second heat exchanger, the hot water supply main pipeline is provided with a second shunt pipeline on the pipe section between the second heat exchanger and the third heat exchanger, and the hot water supply main pipeline is provided with a third shunt pipeline on the pipe section between the third heat exchanger and the fourth heat exchanger. The first heat exchanger shell side is connected to the solar heating system through a pipeline, the second heat exchanger shell side is connected to the heat pump system through a pipeline, the third heat exchanger shell side is connected to the gas / coal heating system through a pipeline, the first shunt pipeline is provided with a fifth heat exchanger, the second shunt pipeline is provided with a sixth heat exchanger, the electric heating system is connected to the fourth heat exchanger, the fifth heat exchanger and the sixth heat exchanger, the first water supply pipeline is provided on the pipe section between the first shunt pipeline and the second heat exchanger, the second water supply pipeline is provided on the pipe section between the second shunt pipeline and the third heat exchanger, and the third water supply pipeline is provided on the pipe section between the third shunt pipeline and the fourth heat exchanger.

[0007] In the above-mentioned regional integrated energy heating system based on multi-energy complementarity, the pipe outlets of the first heat exchanger, the second heat exchanger, the third heat exchanger, the fourth heat exchanger, the fifth heat exchanger and the sixth heat exchanger are respectively provided with temperature sensors.

[0008] In the above-mentioned regional integrated energy heating system based on multi-energy complementarity, the inlets of the first diversion pipeline, the second diversion pipeline and the third diversion pipeline are respectively provided with a first regulating valve.

[0009] In the above-mentioned regional integrated energy heating system based on multi-energy complementarity, the first water supply pipeline, the second water supply pipeline and the third water supply pipeline are respectively provided with a second regulating valve.

[0010] The beneficial effects of the utility model are:

[0011] 1. For areas with high temperature demand, solar heating system, heat pump system, gas / coal heating system and electric heating system are used for heating in turn. In this process, solar heating system and heat pump system are used as clean energy for preheating, and gas / coal heating system and electric heating system are used for enhanced heating to achieve high temperature heating. The hot water diverted from the third diversion pipeline, the second diversion pipeline and the first diversion pipeline has a lower temperature in turn and can be diverted to different demand areas, thereby achieving heating according to specific heat energy demand differences, reducing heating pressure and avoiding heat energy waste.

[0012] 2. When the hot water diverted from the first diversion pipe and the second diversion pipe cannot reach the set temperature due to environmental factors, an electric heating system is used to achieve rapid heating.

[0013] 3. The electric heating system is connected to the wind power generation system to make full use of clean energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure: 1. solar heating system, 2. first heat exchanger, 3. hot water supply main pipeline, 4. heat pump system, 5. temperature sensor, 6. first water supply pipeline, 7. second regulating valve, 8. first regulating valve, 9. fifth heat exchanger, 10. first shunt pipeline, 11. second heat exchanger, 12. second shunt pipeline, 13. sixth heat exchanger, 14. second water supply pipeline, 15. third heat exchanger, 16. gas / coal heating system, 17. wind power generation system, 18. electric heating system, 19. third shunt pipeline, 20. third water supply pipeline, 21. fourth heat exchanger. DETAILED DESCRIPTION

[0016] The utility model is described in detail according to the accompanying drawings of the specification.

[0017] like Figure 1 As shown, the regional integrated energy heating system based on multi-energy complementarity includes a hot water main pipeline 3, a solar heating system 1, a heat pump system 4, a gas / coal heating system 16, an electric heating system 18, and a wind power generation system 17 connected to the electric heating system 18.

[0018] Wherein: the hot water supply main pipeline is provided with a first heat exchanger 2, a second heat exchanger 11, a third heat exchanger 15 and a fourth heat exchanger 21 in sequence from front to back. The hot water supply main pipeline 3 is provided with a first shunt pipeline 10 on the pipe section between the first heat exchanger 2 and the second heat exchanger 11, the hot water supply main pipeline 3 is provided with a second shunt pipeline 12 on the pipe section between the second heat exchanger 11 and the third heat exchanger 15, and the hot water supply main pipeline 3 is provided with a third shunt pipeline 19 on the pipe section between the third heat exchanger 15 and the fourth heat exchanger 21. The shell side of the first heat exchanger 2 is connected to the solar heating system 1 through a pipeline, the shell side of the second heat exchanger 11 is connected to the heat pump system 4 through a pipeline, and the shell side of the third heat exchanger 15 is connected to the gas / coal heating system 16 through a pipeline. The first shunt pipeline 10 is provided with a fifth heat exchanger 9, the second shunt pipeline 12 is provided with a sixth heat exchanger 13, and the electric heating system 18 is connected to the fourth heat exchanger 21, the fifth heat exchanger 9 and the sixth heat exchanger 13. A first water supply pipe 6 is provided on the pipe section between the first shunt pipe 10 and the second heat exchanger 11, a second water supply pipe 14 is provided on the pipe section between the second shunt pipe 12 and the third heat exchanger 15, and a third water supply pipe 20 is provided on the pipe section between the third shunt pipe 19 and the fourth heat exchanger 21.

[0019] In this embodiment, the outlets of the first heat exchanger 2, the second heat exchanger 11, the third heat exchanger 15, the fourth heat exchanger 21, the fifth heat exchanger 9 and the sixth heat exchanger 13 are respectively provided with temperature sensors 5. The inlets of the first shunt pipe 10, the second shunt pipe 12 and the third shunt pipe 19 are respectively provided with first regulating valves 8. The first water supply pipe 6, the second water supply pipe 14 and the third water supply pipe 20 are respectively provided with second regulating valves 7.

[0020] Working process:

[0021] During normal operation, part of the water in the hot water supply main pipe 3 passes through the first heat exchanger 2 and the first branch pipe 10 and is discharged to the area requiring the first gradient temperature; part of the water passes through the second heat exchanger 11 and the second branch pipe 12 and is discharged to the area requiring the second gradient temperature; part of the water passes through the third heat exchanger 15 and the third branch pipe 19 and is discharged to the area requiring the third gradient temperature; part of the water passes through the fourth heat exchanger 21 in sequence and is discharged to the area requiring the fourth gradient temperature.

[0022] When the hot water diverted from the first diversion pipe 10 and the second diversion pipe 12 cannot reach the corresponding first gradient temperature and second gradient temperature due to environmental factors, the electric heating system 18 is used to quickly supplement the heat.

[0023] When the water pressure in the pipeline is insufficient, the corresponding first water replenishment pipeline, the second water replenishment pipeline and the third water replenishment pipeline can be used to replenish water.

[0024] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A regional comprehensive energy heating system based on multi-energy complementarity, including a hot water main pipeline, a solar heating system, a heat pump system, a gas / coal heating system and an electric heating system, characterized in that: The electric heating system is connected to the wind power generation system. The hot water supply main pipeline is provided with a first heat exchanger, a second heat exchanger, a third heat exchanger and a fourth heat exchanger from front to back. The hot water supply main pipeline is provided with a first shunt pipeline on the pipe section between the first heat exchanger and the second heat exchanger, the hot water supply main pipeline is provided with a second shunt pipeline on the pipe section between the second heat exchanger and the third heat exchanger, and the hot water supply main pipeline is provided with a third shunt pipeline on the pipe section between the third heat exchanger and the fourth heat exchanger. The shell side of the first heat exchanger is connected to the solar heating system through a pipeline, and the second heat exchanger is provided with a third shunt pipeline on the pipe section between the third heat exchanger and the fourth heat exchanger. The shell side is connected to the heat pump system through a pipeline, the shell side of the third heat exchanger is connected to the gas / coal heating system through a pipeline, the fifth heat exchanger is provided on the first shunt pipeline, the sixth heat exchanger is provided on the second shunt pipeline, the electric heating system is connected to the fourth heat exchanger, the fifth heat exchanger and the sixth heat exchanger, the first water supply pipeline is provided on the pipe section between the first shunt pipeline and the second heat exchanger, the second water supply pipeline is provided on the pipe section between the second shunt pipeline and the third heat exchanger, and the third water supply pipeline is provided on the pipe section between the third shunt pipeline and the fourth heat exchanger.

2. The regional comprehensive energy heating system based on multi-energy complementarity according to claim 1 is characterized in that: The tube outlets of the first heat exchanger, the second heat exchanger, the third heat exchanger, the fourth heat exchanger, the fifth heat exchanger and the sixth heat exchanger are respectively provided with temperature sensors.

3. The regional comprehensive energy heating system based on multi-energy complementarity according to claim 1 is characterized in that: The inlets of the first shunt pipeline, the second shunt pipeline and the third shunt pipeline are respectively provided with a first regulating valve.

4. The regional comprehensive energy heating system based on multi-energy complementarity according to claim 1 is characterized in that: The first water supply pipeline, the second water supply pipeline and the third water supply pipeline are respectively provided with a second regulating valve.

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