Geothermal and waste electric energy coupled heating system

Abstract

The utility model provides a heating system coupling terrestrial heat and waste electric energy. The heating system comprises a terrestrial heat heating unit and an electric heating unit. The geothermal heating unit is connected with the geothermal well and provided with a water outlet pipeline and a water return pipeline, and the water outlet pipeline and the water return pipeline of the geothermal heating unit are connected with the heating system. The electric heating unit is electrically connected with the wind generating set and provided with a hot water outlet and a water return port, and the hot water outlet of the electric heating unit is connected with the water outlet pipeline of the geothermal heating unit through a connecting pipeline. And a water return port of the electric heating unit is connected with a water return pipeline of the geothermal heating unit through a connecting pipeline. And the electric heating unit can utilize the abandoned wind power of the wind generating set. The geothermal energy and waste electric energy coupled heating system provided by the utility model can avoid waste of waste wind power, can save electric energy in a power grid, ensures the heating effect, and is high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating systems, and in particular relates to a heating system coupled with geothermal energy and waste electric energy. Background Art

[0002] Geothermal energy refers to the heat energy inside the earth. It is a renewable energy source that is clean, renewable and stable. This energy can be converted into usable heat or electricity. Geothermal energy is usually used directly in heating systems, and geothermal energy is extracted through heat exchange with the heating system. Wasted electricity is commonly understood as abandoned wind power, which refers to the amount of wind power that is not absorbed by the power grid within a certain period of time due to insufficient regulation capacity of the power grid, imbalance between supply and demand, technical limitations, power grid connection problems, etc. The amount of abandoned wind power is relatively larger at night. Abandoned wind power will lead to energy waste, and will also affect the economic development of the wind power industry.

[0003] In the prior art, in the northern region, the demand for heating is relatively high at night in winter. In order to avoid insufficient heating of the heating system, a high-temperature heat pump is usually used for assistance. This leads to the consumption of electricity in the power grid and the loss and waste of wind power generation. Therefore, how to use the abandoned wind power for heating is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0004] The embodiment of the utility model provides a heating system that couples geothermal energy with waste electric energy, aiming to achieve the purpose of coupling geothermal energy and abandoned wind power for coordinated heating.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a heating system coupling geothermal energy and waste electric energy, including:

[0006] A geothermal heating unit is connected to the geothermal well and has a water outlet pipeline and a water return pipeline, wherein the water outlet pipeline and the water return pipeline of the geothermal heating unit are connected to the heating system;

[0007] The electric heating unit is electrically connected to the wind turbine generator set and has a hot water outlet and a return water outlet. The hot water outlet of the electric heating unit is connected to the water outlet pipe of the geothermal heating unit through a connecting pipe; the return water outlet of the electric heating unit is connected to the return water pipe of the geothermal heating unit through a connecting pipe; the electric heating unit is used to utilize the abandoned wind power of the wind turbine generator set.

[0008] In a possible implementation, the electric heating unit includes:

[0009] The electrode boiler is electrically connected to the wind turbine generator set and has a heating pipeline inside;

[0010] The heat storage device is connected to the heating pipeline and is connected to the water outlet pipeline and the water return pipeline of the geothermal heating unit.

[0011] In a possible implementation, a water storage space and a water replenishment space are provided in the heat storage device, and the heat storage device is provided with a hot water pipe located at the bottom of the water storage space, a water inlet pipe located at the top of the water storage space and connected to one end of the heating pipeline, a first water return pipe located at the top of the water storage space, a second water return pipe located at the top of the water replenishment space, and a water guide pipe located at the bottom of the water replenishment space and connected to the other end of the heating pipeline;

[0012] Wherein, the outlet of the water outlet pipe is the hot water outlet;

[0013] Wherein, the pipe openings of the first water return pipe and the second water return pipe together form the water return opening.

[0014] In a possible implementation, the heat storage device is further provided with a water replenishment pipe connected to the water replenishment space.

[0015] In a possible implementation, both the first water return pipe and the second water return pipe are provided with solenoid valves.

[0016] In a possible implementation, a mixing box is fixedly provided on the top of the water storage space, the mixing box has a cylindrical cavity with an open top, and a plurality of water holes communicating with the cylindrical cavity are uniformly arranged at the bottom of the mixing box;

[0017] Wherein, the water inlet pipe and the first water return pipe are both fixed on the mixing box, and are both arranged along the tangent line of the cylindrical cavity.

[0018] In this implementation, the electric heating unit is electrically connected to the wind turbine generator set, which can ensure that the abandoned wind power of the wind turbine generator set is fully utilized, and the electrical energy is converted into thermal energy, and is connected to the water outlet pipeline and the water return pipeline at the same time. By coupling the electric heating unit with the geothermal heating unit, the waste of abandoned wind power can be avoided, the electrical energy in the power grid can be saved, and the heating effect can be guaranteed, which is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a heating system coupled with geothermal and waste electric energy provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the structure of a heat storage device in a heating system coupled with geothermal energy and waste electric energy provided by an embodiment of the utility model;

[0021] Figure 3 for Figure 2AA structural diagram of a heating system coupled with geothermal energy and waste electric energy provided in an embodiment;

[0022] Description of reference numerals:

[0023] 10. Geothermal heating unit; 11. Heat exchanger; 12. Water outlet pipe; 13. Return water pipe; 20. Electric heating unit; 21. Electrode boiler; 22. Heat storage device; 221. Water storage space; 222. Water replenishment space; 223. Hot water pipe; 224. Water inlet pipe; 225. First return water pipe; 226. Second return water pipe; 227. Water guide pipe; 228. Mixing box; 30. Heating system; 40. Wind turbine generator set. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] See also Figure 1 , the geothermal and waste electric energy coupled heating system provided by the utility model is now described. The geothermal and waste electric energy coupled heating system comprises a geothermal heating unit 10 and an electric heating unit 20. The geothermal heating unit 10 is connected to the geothermal well, and has a water outlet pipeline 12 and a return water pipeline 13. The water outlet pipeline 12 and the return water pipeline 13 of the geothermal heating unit 10 are connected to the heating system 30. The electric heating unit 20 is electrically connected to the wind turbine 40, and has a hot water outlet and a return water outlet. The hot water outlet of the electric heating unit 20 is connected to the water outlet pipeline 12 of the geothermal heating unit 10 through a connecting pipeline. The return water outlet of the electric heating unit 20 is connected to the return water pipeline 13 of the geothermal heating unit 10 through a connecting pipeline. The electric heating unit 20 can utilize the abandoned wind power of the wind turbine 40.

[0026] Compared with the prior art, the geothermal and waste electric energy coupled heating system provided in this embodiment is electrically connected to the wind turbine generator set 40, which can ensure that the abandoned wind power of the wind turbine generator set 40 is fully utilized, and the electric energy is converted into heat energy, and is connected to the water outlet pipeline 12 and the water return pipeline 13. By coupling the electric heating unit 20 with the geothermal heating unit 10, the waste of abandoned wind power can be avoided, the electric energy in the power grid can be saved, and the heating effect can be guaranteed, which is highly practical.

[0027] It should be noted that the heating system 30 may be a user.

[0028] In some embodiments, the electric heating unit 20 may be used as follows: Figure 1 See the structure shown. Figure 1 The electric heating unit 20 includes an electrode boiler 21 and a heat storage device 22. The electrode boiler 21 is electrically connected to the wind turbine generator set 40 and has a heating pipeline inside. The heat storage device 22 is connected to the heating pipeline and is connected to the water outlet pipeline 12 and the return water pipeline 13 of the geothermal heating unit 10.

[0029] The electrode boiler 21 can heat the fluid medium in the heating pipeline through the electrode electrically connected to the wind turbine 40, with high heating efficiency, rapid heating, and environmental protection, which can ensure the utilization of abandoned wind power. The heat storage device 22, as a device capable of storing thermal energy, can store the thermal energy produced by the electrode boiler 21 and release it into the heating system 30 through the water outlet pipeline 12.

[0030] The hot water outlet and the return water outlet are both located on the heat storage device 22, and can form a circulation pipeline with the outlet pipe 12 and the return water pipe 13, or in other words, the heat storage device 22 and the geothermal heating unit 10 are connected in parallel. This structure can ensure that the heat storage unit is coupled with the geothermal heating unit 10, thereby ensuring the utilization of abandoned wind power, while saving electricity in the power grid and ensuring the heating effect.

[0031] In some embodiments, the heat storage device 22 may be configured as follows: Figure 2 See the structure shown. Figure 2 A water storage space 221 and a water replenishment space 222 are provided in the heat storage device 22. The heat storage device 22 is provided with a hot water pipe 223 located at the bottom of the water storage space 221, a water inlet pipe 224 located at the top of the water storage space 221 and connected to one end of the heating pipeline, a first return water pipe 225 located at the top of the water storage space 221, a second return water pipe 226 located at the top of the water replenishment space 222, and a water guide pipe 227 located at the bottom of the water replenishment space 222 and connected to the other end of the heating pipeline.

[0032] Specifically, the pipe opening of the hot water pipe 223 is a hot water outlet.

[0033] Specifically, the pipe openings of the first water return pipe 225 and the second water return pipe 226 together form a water return opening.

[0034] The working principle of the heat storage device 22 is that the second water return pipe 226 guides part of the low-temperature water in the water return pipeline 13 into the water replenishment space 222, and then enters the electrode boiler 21 through the water guide pipe 227 at the bottom of the water replenishment space 222 for heating, and then enters the water storage space 221 through the water inlet pipe 224 to ensure that the water temperature in the water storage space 221 is constant, and avoid water temperature stratification or uneven water temperature distribution in the water storage space 221. In order to avoid the water temperature in the water storage space 221 being too high, the first water return pipe 225 can guide part of the low-temperature water in the water return pipeline 13 into the water storage space 221 to adjust the water temperature in the water storage space 221. The hot water pipe 223 can guide the constant temperature water in the water storage space 221 into the water outlet pipeline 12 and transfer it to the heating unit.

[0035] By providing the heat storage device 22, the water temperature in the water storage space 221 can be kept constant, thereby ensuring the heating effect.

[0036] In addition, it should be noted that a pressure pump needs to be installed between the water pipe 227 and the heating pipeline to ensure the flow of the water medium.

[0037] In this embodiment, a delivery pump may be provided on the connecting pipeline between the first water return pipe 225 , the second water return pipe 226 and the water return pipeline 13 .

[0038] In some embodiments, the heat storage device 22 may be configured as follows: Figure 2 See the structure shown. Figure 2 The heat storage device 22 is also provided with a water supply pipe connected to the water supply space 222. The water supply pipe can ensure that water is supplied to the heat storage unit to avoid water shortage in the heating system.

[0039] In some embodiments, the first water return pipe 225 and the second water return pipe 226 may be formed as follows: Figure 2 See the structure shown. Figure 2 The first water return pipe 225 and the second water return pipe 226 are both provided with solenoid valves, and the two solenoid valves can ensure that the opening of the first water return pipe 225 and the second water return pipe 226 are adjusted to ensure that part of the low-temperature water transmitted from the return water pipeline 13 is distributed, and ensure that there is medium water in the water replenishment space 222, and at the same time, it can also ensure that the water temperature in the water storage space 221 is adjusted.

[0040] It should be noted that a pressure pump needs to be installed between the water pipe 227 and the heating pipeline to adjust the flow rate according to the amount of water in the water distribution space to avoid dry burning.

[0041] In some embodiments, the heat storage device 22 may be configured as follows: Figure 3 See the structure shown. Figure 3A mixing box 228 is fixedly provided on the top of the water storage space 221. The mixing box 228 has a cylindrical cavity with an open top, and a plurality of water holes communicating with the cylindrical cavity are evenly distributed on the bottom of the mixing box 228.

[0042] Specifically, the water inlet pipe 224 and the first water return pipe 225 are both fixed on the mixing box 228, and are both arranged along the tangent line of the cylindrical cavity.

[0043] The arrangement of the mixing box 228 can ensure that the hot water introduced by the water inlet pipe 224 and the low-temperature water introduced by the first water return pipe 225 are fully mixed in advance, and at the same time, drip evenly into the constant temperature water in the water storage chamber through a plurality of water holes.

[0044] In addition, the tangent setting of the cylindrical cavity of the water inlet pipe 224 and the first water return pipe 225 can ensure that during the process of injecting water into the cylindrical cavity, the water in the cylindrical cavity is pushed to rotate, thereby ensuring that the water in the cylindrical cavity is fully mixed, which can effectively ensure that the water temperature in the water storage space 221 is constant.

[0045] In some embodiments, the geothermal heating unit 10 may be used as follows: Figure 1 See the structure shown. Figure 1 The geothermal heating unit 10 may include a heat exchanger 11, which has a heat medium inlet, a heat medium outlet, a refrigerant inlet, and a refrigerant outlet. The heat medium inlet and the heat medium outlet of the heat exchanger 11 are connected to the geothermal well, the pipeline connected to the refrigerant outlet of the heat exchanger 11 is the water outlet pipeline 12, and the pipeline connected to the refrigerant inlet of the heat exchanger 11 is the water return pipeline 13.

[0046] The geothermal and waste electric energy coupled heating system provided in this embodiment is not limited to wind power generation, but is also applicable to waste electric energy generated by other natural resource-based power generation such as solar photovoltaic power generation.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating system coupled with geothermal and waste electricity, characterized in that: include: A geothermal heating unit is connected to the geothermal well and has a water outlet pipeline and a water return pipeline, wherein the water outlet pipeline and the water return pipeline of the geothermal heating unit are connected to the heating system; The electric heating unit is electrically connected to the wind turbine generator set and has a hot water outlet and a return water outlet. The hot water outlet of the electric heating unit is connected to the water outlet pipe of the geothermal heating unit through a connecting pipe; the return water outlet of the electric heating unit is connected to the return water pipe of the geothermal heating unit through a connecting pipe; the electric heating unit is used to utilize the abandoned wind power of the wind turbine generator set.

2. The geothermal and waste electric energy coupled heating system according to claim 1, characterized in that: The electric heating unit comprises: The electrode boiler is electrically connected to the wind turbine generator set and has a heating pipeline inside; The heat storage device is connected to the heating pipeline and is connected to the water outlet pipeline and the water return pipeline of the geothermal heating unit.

3. The geothermal and waste electric energy coupled heating system according to claim 2, characterized in that: The heat storage device is provided with a water storage space and a water replenishment space, and the heat storage device is provided with a hot water pipe located at the bottom of the water storage space, a water inlet pipe located at the top of the water storage space and connected to one end of the heating pipeline, a first water return pipe located at the top of the water storage space, a second water return pipe located at the top of the water replenishment space, and a water guide pipe located at the bottom of the water replenishment space and connected to the other end of the heating pipeline; Wherein, the outlet of the water outlet pipe is the hot water outlet; Wherein, the pipe openings of the first water return pipe and the second water return pipe together form the water return opening.

4. The geothermal and waste electric energy coupled heating system according to claim 3, characterized in that: The heat storage device is also provided with a water replenishment pipe which is connected with the water replenishment space.

5. The geothermal and waste electric energy coupled heating system according to claim 3, characterized in that: The first water return pipe and the second water return pipe are both provided with solenoid valves.

6. The geothermal and waste electric energy coupled heating system according to claim 3, characterized in that: A mixing box is fixedly arranged on the top of the water storage space, and the mixing box has a cylindrical cavity with an open top, and a plurality of water holes communicating with the cylindrical cavity are evenly arranged at the bottom of the mixing box; Wherein, the water inlet pipe and the first water return pipe are both fixed on the mixing box, and are both arranged along the tangent line of the cylindrical cavity.

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