Power supply equipment using temperature difference airflow

Abstract

The invention relates to power supply equipment utilizing temperature difference airflow in the technical field of new energy power generation, and the power supply equipment comprises a loop pipe capable of circulating a heat exchange medium and a first heat exchange box containing circulating water, and the upper end pipe body and the lower end pipe body of the loop pipe extend into the first heat exchange box and a geothermal well correspondingly; the top and the bottom of the first heat exchange box are respectively provided with a water outlet pipe and a water inlet pipe for externally circulating inlet and outlet circulating water; a well opening of the geothermal well is covered with a heat gathering cover, a steam outlet pipe is arranged at the top of the heat gathering cover, a flow guide cover is arranged outside the heat gathering cover in a clearance sleeving mode, a drainage pipe arranged outside the steam outlet pipe in a clearance sleeving mode is arranged at the top of the flow guide cover, and the top end of the drainage pipe is higher than the top end of the steam outlet pipe. A flow inlet pipe is arranged on the outer wall of the bottom end of the heat gathering cover, a wind wheel of a wind wheel generator is installed at an inner port of the flow inlet pipe, and a pipe body of the water inlet pipe passes through the flow inlet pipe; the power supply equipment can utilize hot steam dissipated by a geothermal well to carry out temperature difference airflow power generation.

Description

Technical Field

[0001] The present invention relates to the technical field of renewable energy power generation, and in particular to a power supply device utilizing temperature difference airflow. Background Art

[0002] As is known, geothermal energy is a new energy source, usually used for heating. The method of collecting heat energy is shown in the enhanced geothermal heating system disclosed in the announcement number CN105371341A. The lower pipe body of a loop pipe is extended into the geothermal well. A heat exchange medium circulates in the loop pipe. The heat exchange medium will bring the heat energy in the geothermal well upward, and the heat energy brought out will be exchanged for circulating water. Through this double-circulation heat exchange structure, cold water can be converted into hot water, so as to provide heating for places with low average temperature all year round. However, existing geothermal wells are directly set in the open air, and most of the hot steam flows upward, and the dissipated heat energy is not effectively utilized. Summary of the invention

[0003] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the present invention discloses a power supply device using temperature difference airflow, which can use the hot steam dissipated from the geothermal well to generate electricity using temperature difference airflow.

[0004] To achieve the above object, the present invention adopts the following technical solution: A power supply device utilizing temperature difference airflow comprises a loop pipe capable of circulating a heat exchange medium and a first heat exchange box for containing circulating water, wherein the upper and lower ends of the loop pipe extend into the first heat exchange box and a geothermal well respectively, and the top and bottom of the first heat exchange box are respectively provided with an outlet pipe and an inlet pipe for external circulation of circulating water; the wellhead cover of the geothermal well is provided with a heat collecting cover, the top of the heat collecting cover is provided with a steam outlet pipe, a guide cover is provided with a gap sleeve outside the heat collecting cover, a discharge pipe is provided with a gap sleeve outside the steam outlet pipe on the top of the guide cover, and the top of the discharge pipe is higher than the top of the steam outlet pipe; an inlet pipe is provided on the outer wall of the bottom end of the heat collecting cover, a wind wheel of a wind turbine generator is installed at the inner port of the inlet pipe, and the body of the water inlet pipe passes through the inlet pipe.

[0005] Furthermore, a plurality of inlet pipes are evenly arranged around the circumference of the air guide cover, and a water inlet pipe passes through each inlet pipe.

[0006] Furthermore, the water inlet pipe body in the inlet pipe is in a coil shape.

[0007] Furthermore, the steam outlet pipe and the exhaust pipe are both configured as circular pipes and are respectively disposed at the center of the top of the heat collecting hood and the flow guide hood.

[0008] Furthermore, the first heat exchange box is arranged in the heat collecting cover, and the first heat exchange box and the heat collecting cover are connected by a support rod.

[0009] Furthermore, a second heat exchange box is provided in the groundwater of the geothermal well, and a heat exchange medium with a boiling point lower than the groundwater temperature is provided in the lower part of the second heat exchange box. The lower end of the loop pipe is disconnected to form an outlet end extending into the bottom end of the heat exchange medium and an inlet end connected to the top of the second heat exchange box.

[0010] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects: The power supply equipment utilizing temperature difference airflow disclosed in the present invention mainly utilizes the temperature difference between the rising hot air flow of the geothermal well and the surrounding environment to cause directional air flow to generate wind power; a heat collecting hood is arranged on the geothermal well cover to collect and guide the rising hot air flow, so that the air between the heat collecting hood and the guide hood is heated and then flows upward, causing the cold air near the external ground to be drawn into the inlet pipe, thereby driving the wind wheel of the wind turbine generator to generate electricity; in addition, at the top of the discharge pipe, the steam outlet pipe increases the flow rate of the rising hot air flow of the geothermal well, thereby driving the flow rate of the discharge pipe to increase, further increasing the flow rate of the air between the heat collecting hood and the guide hood, and the water inlet pipe passes through the inlet pipe, which can not only preheat the relatively cold water flow in the water inlet pipe, but also reduce the temperature of the air in the inlet pipe, thereby increasing the upper and lower temperature differences, further increasing the flow rate, and improving the power generation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the implementation structure of the present invention.

[0012] In the figure: 1. discharge pipe; 2. steam outlet pipe; 3. heat collecting hood; 4. guide hood; 5. first heat exchange box; 6. loop pipe; 7. water outlet pipe; 8. wind wheel; 9. water inlet pipe; 10. wind wheel; 11. second heat exchange box; 12. inlet pipe. DETAILED DESCRIPTION

[0013] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0014] Combined with Figure 1The power supply equipment utilizing temperature difference airflow comprises a loop pipe 6 capable of circulating a heat exchange medium and a first heat exchange box 5 for containing circulating water. The first heat exchange box 5 is arranged in the heat collecting cover 3 as required, and the first heat exchange box 5 is connected to the heat collecting cover 3 by a support rod 10, so as to ensure that the first heat exchange box 5 can be stably supported and erected in the support rod 10, so that the hot steam rising in the geothermal well can heat the circulating water in the first heat exchange box 5; the upper and lower ends of the loop pipe 6 extend into the first heat exchange box 5 and the geothermal well respectively, and the top and bottom of the first heat exchange box 5 are respectively provided with an outlet pipe 7 and an inlet pipe 9 for external circulation of circulating water in and out, and the heat exchange medium flowing in the loop pipe 6 , which can transfer the heat energy in the geothermal well to the circulating water in the first heat exchange box 5. However, if the heat exchange medium is always liquid, an additional circulation pump is required to drive the reflux. In order not to add an additional circulation pump, a second heat exchange box 11 can be set in the groundwater of the geothermal well as needed. A heat exchange medium with a boiling point lower than the groundwater temperature is set in the lower part of the second heat exchange box 11. The lower end of the loop pipe 6 is disconnected to form an outlet end extending into the bottom of the heat exchange medium and an inlet end connected to the top of the second heat exchange box 11. In this way, the heat exchange medium can automatically rise after vaporization, and then liquefy and flow back to the second heat exchange box 11 after heat exchange and cooling. The vaporized heat exchange medium can also increase the heat exchange efficiency in the first heat exchange box 5. The wellhead housing of the geothermal well is provided with a heat collecting hood 3, which can collect and guide the hot steam at the geothermal wellhead. A steam outlet pipe 2 is provided on the top of the heat collecting hood 3, which can increase the flow rate of the rising hot steam. A guide hood 4 is provided in a gap sleeve outside the heat collecting hood 3. The guide hood 4 can be made of a heat-insulating material to ensure that the air in the gap between the heat collecting hood 3 and the guide hood 4 can be heated. A discharge pipe 1 is provided on the top of the guide hood 4, which is sleeved outside the steam outlet pipe 2 in a gap, and the top of the discharge pipe 1 is higher than the top of the steam outlet pipe 2. This design enables the steam outlet pressure at the upper end of the steam outlet pipe 2 to drive the air flow rate in the discharge pipe 1. According to needs, the steam outlet pipe 2 and the discharge pipe 1 are both set as round pipes and are respectively arranged at the top center of the heat collecting hood 3 and the guide hood 4 to ensure that the air is heated and flows evenly. An inlet pipe 12 is provided on the outer wall of the bottom end of the heat collecting hood 3, and a wind wheel 8 of a wind turbine generator is installed on the inner port of the inlet pipe 12. The flowing air drives the wind wheel 8 to generate electricity. The body of the water inlet pipe 9 passes through the inlet pipe 12, which can not only preheat the colder water flow in the water inlet pipe 9, but also reduce the temperature of the air in the inlet pipe 12, thereby increasing the upper and lower temperature difference. In addition, the body of the water inlet pipe 9 in the inlet pipe 12 is in a coil shape to increase the heat exchange area. According to needs, a plurality of inlet pipes 12 are evenly arranged around the guide cover 4, and each inlet pipe 12 is passed through the water inlet pipe 9, so as to collect cold air from all directions of the ground.

[0015] In the implementation of the power supply equipment utilizing temperature difference airflow described in the present invention, during the process of the first heat exchange box 5 and the loop pipe 6 in the heat collecting cover 3 directly collecting the thermal energy of the groundwater in the geothermal well, the air between the heat collecting cover 3 and the guide cover 4 is also heated and flows upward, causing the cold air near the external ground to be drawn into the inlet pipe 12, driving the wind wheel 8 of the wind turbine generator to generate electricity, and the increased flow velocity at the top of the discharge pipe due to the discharge of the steam outlet pipe and the increased temperature difference in the inlet pipe due to the cold water in the water inlet pipe can further increase the flow velocity of the air between the heat collecting cover 3 and the guide cover 4, thereby improving the power generation effect of the wind wheel 8.

[0016] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A power supply device utilizing temperature difference airflow, comprising a loop pipe (6) capable of circulating a heat exchange medium and a first heat exchange box (5) containing circulating water, wherein the upper and lower ends of the loop pipe (6) extend into the first heat exchange box (5) and a geothermal well respectively, and the top and bottom of the first heat exchange box (5) are respectively provided with an outlet pipe (7) and an inlet pipe (9) for externally circulating circulating water, wherein: The wellhead cover of the geothermal well is provided with a heat collecting cover (3), a steam outlet pipe (2) is provided on the top of the heat collecting cover (3), a flow guide cover (4) is provided in a gap sleeve outside the heat collecting cover (3), a discharge pipe (1) is provided in a gap sleeve outside the steam outlet pipe (2) on the top of the flow guide cover (4), and the top of the discharge pipe (1) is higher than the top of the steam outlet pipe (2); an inlet pipe (12) is provided on the outer wall of the bottom end of the heat collecting cover (3), a wind wheel (8) of a wind turbine generator is installed at the inner end of the inlet pipe (12), and the pipe body of the water inlet pipe (9) passes through the inlet pipe (12).

2. The power supply device using temperature difference airflow according to claim 1 is characterized in that: A plurality of the inlet pipes (12) are evenly arranged around the circumference of the flow guide cover (4), and a water inlet pipe (9) passes through each of the inlet pipes (12).

3. The power supply device using temperature difference airflow according to claim 1 is characterized in that: The water inlet pipe (9) in the inlet pipe (12) is in the shape of a coil.

4. The power supply device using temperature difference airflow according to claim 1 is characterized in that: The steam outlet pipe (2) and the discharge pipe (1) are both circular pipes and are respectively arranged at the center of the top of the heat collecting hood (3) and the flow guide hood (4).

5. The power supply device using temperature difference airflow according to claim 1, characterized in that: The first heat exchange box (5) is arranged in the heat collecting cover (3), and the first heat exchange box (5) and the heat collecting cover (3) are connected via a support rod (10).

6. The power supply device using temperature difference airflow according to claim 1, characterized in that: A second heat exchange box (11) is provided in the groundwater of the geothermal well, and a heat exchange medium having a boiling point lower than the groundwater temperature is provided in the lower portion of the second heat exchange box (11). The lower end of the loop pipe (6) is disconnected to form an outlet end extending into the bottom of the heat exchange medium and an inlet end connected to the top of the second heat exchange box (11).

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