Active heat exchange energy piles for the environmental remediation of coal gangue stockyards

Abstract

The present invention relates to the technical fields of geotechnical engineering, mining engineering, and environmental engineering, and provides an active heat exchange energy pile for environmental remediation of coal gangue stockyards. The active heat exchange energy pile for environmental remediation of coal gangue stockyards comprises a pile body, a radiator, a heat exchange system, and a solar power generation and control system. Heat from within the coal gangue pile is transferred through the pile body to a heat transfer liquid in a heat transfer tube. The heat transfer liquid flows along the heat transfer tube into a heat dissipation tube under the drive of a draft pump, transferring the heat to the radiator. The heat is then dissipated to the ambient environment through a plurality of heat sinks under the action of a fan. The solution provided by the present invention has the beneficial effect of actively transferring heat from within the pile to the ground surface during the exothermic oxidation reaction in the coal gangue pile process, ensuring that the temperature of the coal gangue is below the limit of spontaneous combustion and preventing spontaneous combustion. It also has the advantages of a simple structure, high integration, low cost, and easy operation.

Description

[Technical Field]

[0001] The present invention relates to the technical fields of geotechnical, mining and environmental engineering, and in particular to an active heat exchange energy pile for environmental remediation of coal gangue stockyards. [Background technology]

[0002] Coal gangue is a solid waste generated during the coal mining and washing processes. Currently, gangue discharge from coal mines accounts for approximately 8-20% of the total coal mined. The accumulation of coal gangue causes many environmental problems, such as air pollution due to the spontaneous combustion of the coal gangue, which generates large amounts of toxic and harmful gases such as SO2, CO, and H2S, and the leaching of heavy metals and other toxic and harmful substances contained in the coal gangue after spontaneous combustion or weathering leads to the generation of heavy metal wastewater through the leaching action of rainwater. Spontaneous combustion of gangue piles can continue for several decades, even decades. The release of these harmful gases not only reduces the air quality in the surrounding environment and affects the health of residents in the mining areas, but also affects the surrounding ecological environment, slowing tree growth, increasing biological damage, and often reducing crop production until trees die. Conventional technologies mainly use passive heat dissipation methods to transfer underground temperature to the surface, but this has low conduction efficiency, poor heat dissipation effect, and is easily affected by external environmental temperatures. Therefore, there is an urgent need to develop an active heat exchange energy pile suitable for environmental remediation of coal gangue stockyards. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention overcomes the drawbacks of the prior art and aims to provide an active heat exchange energy pile for environmental remediation of coal gangue stockyards, which actively transfers heat from the inside of the pile to the ground surface during the exothermic oxidation reaction in the coal gangue pile process, ensures that the temperature of the coal gangue is lower than the limit value of spontaneous combustion, and prevents the occurrence of spontaneous combustion. [Means for solving the problem]

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The present invention provides an active heat exchange energy pile for environmental remediation of coal gangue stockyards, which comprises a pile body, a radiator, a heat exchange system, and a solar power generation and control system.

[0006] Furthermore, the pile body has a closed tubular structure, consists of an underground portion and an above-ground portion, and is the main body of the energy pile. The underground portion has an annular protrusion on its surface and is used to improve the stability of embedding in the coal gangue pile. The above-ground portion has a smooth surface and is used to connect the underground portion with a radiator.

[0007] The heat sink is located above the pile body and consists of a main frame, multiple heat sinks, a fan, and a parasol. It is used to dissipate heat transferred inside the energy pile to the atmospheric environment. The main frame has a rectangular parallelepiped structure, and the multiple heat sinks are placed vertically and evenly on the outside of the main frame. The fan is located above the multiple heat sinks and is used to quickly dissipate heat. The parasol is located above the fan and is used to block direct sunlight and prevent the multiple heat sinks from overheating.

[0008] The heat exchange system is installed inside the pile body and the radiator, and consists of a heat transfer pipe, a draft pump, and a heat dissipation pipe. It is used to transfer heat from inside the coal gangue pile to the radiator. The heat transfer pipe is located inside the pile body and contains a heat transfer liquid. The heat transfer pipe is in the form of a spiral coil underground to increase the heat absorption contact area. The draft pump is located between the heat transfer pipe and the heat dissipation pipe inside the radiator, and is used to drive the heat transfer liquid to circulate along the heat transfer pipe and the heat dissipation pipe. The heat dissipation pipe is in the form of a spiral coil and is distributed on the inner wall of the radiator body frame.

[0009] The heat transfer mode of the device is as follows: heat inside the coal gangue pile is transferred through the pile body to the heat transfer liquid in the heat transfer tube; the heat transfer liquid flows along the heat transfer tube into the heat dissipation tube under the drive of the draft pump, and transfers the heat to the radiator; the heat is then dissipated to the atmospheric environment by multiple heat sinks under the action of a fan; after cooling, the heat transfer liquid returns to the heat transfer tube, and the above process is repeated.

[0010] The solar power generation and control system comprises a controller, a plurality of solar power generation panels, a lithium battery, and a plurality of temperature sensors, and is used to provide power energy and system control for the entire apparatus. The controller is located at the top of the apparatus and is used for controlling the opening and closing of the fan and draft pump, and for collecting signals from the plurality of temperature sensors. The plurality of solar power generation panels are evenly distributed below the controller and are used for power generation. The lithium battery is located below the plurality of solar power generation panels and is used to store power generated by the plurality of solar power generation panels and transport it to the fan, draft pump, controller, and the plurality of temperature sensors. The plurality of temperature sensors are located on the inner wall of the underground part of the pile body and can sense the temperature inside the coal gangue pile and transmit signals to the controller. [Effects of the Invention]

[0011] Compared with the prior art, the technical solution provided in the present invention has the following beneficial effects, by way of example and not limitation:

[0012] The present invention is applicable to the technical fields of geotechnical engineering, mining engineering and environmental engineering. In the process of coal gangue deposition, the heat inside the deposit is actively transferred to the ground surface during the exothermic oxidation reaction, ensuring that the temperature of the coal gangue is lower than the limit value for spontaneous combustion, preventing spontaneous combustion. The invention has the advantages of simple structure, high integration, low cost and easy operation. [Brief explanation of the drawings]

[0013] [Figure 1]FIG. 1 is a structural schematic diagram of an active heat exchange energy pile for environmental remediation of coal gangue stockyards provided in an embodiment of the present invention. [Figure 2] FIG. 1 is a schematic diagram of the installation of an active heat exchange energy pile for environmental remediation of coal gangue stockyards provided in an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] The technical solution provided by the present invention will be further described below with reference to specific embodiments and accompanying drawings, and the advantages and features of the present invention will be more apparent from the following description.

[0015] It should be noted that the embodiments of the present invention have good practical application and do not limit the present invention in any way. The technical features or combinations of technical features described in the embodiments of the present invention should not be regarded as isolated, but can be combined with each other to achieve better technical effects. Other implementations may be included within the scope of the preferred embodiments of the present invention, as should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0016] Techniques, methods, and equipment known to those skilled in the relevant art may not be described in detail, but in some cases, said techniques, methods, and equipment should be considered part of the specification. In all examples shown and described herein, any specific values ​​should be construed as exemplary only, not limiting, and thus other instances of the example embodiment may have different values.

[0017] The drawings of the present invention are all in a very simplified form and not entirely accurate in scale, but are not intended to limit the operable conditions of the present invention, but are merely used for convenience and clarity to assist in explaining the embodiments of the present invention. Any structural modifications, changes in scale relationships, and size adjustments should be within the scope of the technical content disclosed in the present invention as long as they do not affect the effects that can be achieved and the objectives that can be achieved by the present invention. Furthermore, the same reference numerals appearing in the various figures of the present invention represent the same features or components and may be applicable to different embodiments.

[0018] As shown in FIG. 1, the active heat exchange energy pile for environmental remediation of coal gangue stockyards includes a pile body 1, a radiator 2, a heat exchange system 3, and a solar power generation and control system 4.

[0019] The pile body 1 has a closed tubular structure and is composed of an underground part 11 and an above-ground part 12 . The underground portion 11 has a ring-shaped protrusion on its surface, and the above-ground portion 12 has a smooth surface and is used to connect the underground portion 11 and the radiator 2.

[0020] The radiator 2 is located above the pile body 1 and comprises a main body frame 21, 68 heat sinks 22, a fan 23, and a parasol 24. The main body frame 21 has a rectangular parallelepiped structure and is made of pure aluminum. The 68 heat sinks 22 are made of pure aluminum and are placed vertically and evenly on the outside of the main frame 21. The fans 23 are positioned above the 68 heat sinks 22. The parasol 24 is positioned above the fans 23.

[0021] The heat exchange system 3 is attached to the inside of the pile body 1 and the radiator 2, and is composed of a heat transfer pipe 31, a draft pump 32, and a heat radiation pipe 33. The heat transfer pipe 31 is located inside the pile body 1, is made of pure copper, and contains a heat conductive liquid (Great Wall L-QC320 mineral oil-type synthetic heat conductive oil). It is arranged in a spiral coil in the underground part 11. As shown in Figure 1A, the draft pump 32 is located inside the radiator 2 between the heat transfer pipe 31 and the heat dissipation pipe 33. The heat dissipation pipe 33 is made of pure copper and is arranged in a spiral coil on the inner wall of the main frame 21 of the radiator 2.

[0022] The solar power generation and control system 4 comprises a controller 41, four solar power generation panels 42, a lithium battery 43, and three temperature sensors 44. A controller 41 is located at the top of the device and can control the opening and closing of the fan 23, the draft pump 32, and the collection of signals from three temperature sensors 44. The four solar panels 42 are evenly distributed below the controller 41, and the lithium batteries 43 are located below the four solar panels 42 to store the electricity generated by the four solar panels 42 and transmit it to the fan 23, the draft pump 32, the controller 41, and the three temperature sensors 44. The three temperature sensors 44 are located on the inner wall of the underground part 11 of the pile body 1 and can sense the temperature inside the coal gangue pile 5 and transmit a signal to the controller 41.

[0023] As shown in FIG. 2, the underground portion 11 of the pile body 1 is buried inside the coal gangue pile body 5, and the above-ground portion 12 is located above the ground surface. The heat transfer mode of the device is as follows: heat inside the coal gangue pile 5 is transferred through the pile 1 to the heat transfer liquid in the heat transfer pipe 31; the heat transfer liquid flows along the heat transfer pipe 31 into the heat dissipation pipe 33 under the drive of the draft pump 32, and transfers the heat to the radiator 2; the heat is then dissipated to the atmospheric environment by the 68 heat sinks 22 under the action of the fan 23; after cooling, the heat transfer liquid returns to the heat transfer pipe 31, and the above process is repeated.

[0024] In a preferred embodiment, the four solar panels 42 and the lithium battery 43 are connected by wires, and the power generated by the four solar panels 42 can be stored. The lithium battery 43 is connected by wires to the fan 23, the draft pump 32, the controller 41 and the three temperature sensors 44, and is capable of transmitting power. The controller 41 is connected to the fan 23 and draft pump 32 by wires, and controls the opening and closing of the above-mentioned devices by an internal program. The controller 41 is connected to the three temperature sensors 44 by wires, and controls the collection of signals from the three temperature sensors 44 by an internal program.

[0025] The active heat exchange energy pile for environmental remediation of coal gangue stockyards provided by the present invention has the following working method and application:

[0026] 1) First, the underground portion 11 of the pile body 1 is buried inside the coal gangue pile 5, and the above-ground portion 12 is positioned above the ground surface. Four photovoltaic panels 42 generate electricity, which is stored in lithium batteries 43, which transport the power throughout the system.

[0027] 2) The three temperature sensors 44 measure the temperature inside the coal gangue pile 5, and when the temperature exceeds the upper limit temperature (50°C), the controller 41 starts the fan 23 and the draft pump 32 according to an internal program.

[0028] 3) The heat inside the coal gangue pile 5 is transferred through the pile 1 to the heat transfer liquid in the heat transfer pipes 31. The heat transfer liquid flows into the heat dissipation pipes 33 along the heat transfer pipes 31 driven by the draft pump 32, and transfers the heat to the radiators 2. The heat is then dissipated into the atmospheric environment by the 68 heat sinks 22 under the action of the fans 23.

[0029] 4) After cooling, the heat transfer liquid returns to the heat transfer tube 31 and the above process is repeated.

[0030] 5) When the temperature inside the coal gangue pile 5 drops below the lower limit temperature (30°C), the controller 41 stops the fan 23 and the draft pump 32 according to an internal program.

[0031] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications that a person skilled in the art can make based on the technical content disclosed above shall be regarded as equivalent effective embodiments and fall within the protection scope of the technical solutions of the present invention. [Explanation of symbols]

[0032] 1 Pile body 2 Heat sink 3 Heat exchange system 4. Solar power generation and control systems 5 Coal gangue deposit 11 Underground 12 Aboveground parts 21 Main frame 22 Heat sink 23 Fans 24 Parasol 31 Heat transfer tube 32 Draft pump 33 Heat dissipation tube 41 Controller 42 Solar panels 43 Lithium battery 44 Temperature Sensor

Claims

1. 1. An active heat exchange energy pile for environmental remediation of a coal gangue stockyard, comprising: a pile body (1), a radiator (2), a heat exchange system (3), and a solar power generation and control system (4), wherein the pile body (1) is a main body of the energy pile and is used for structural support; the radiator (2) is used to radiate heat transferred inside the energy pile to the atmospheric environment; the heat exchange system (3) is used to conduct heat inside a coal gangue pile (5) to the radiator (2); and the solar power generation and control system (4) is used to provide power energy and system control for the entire device.

2. 2. The active heat exchange energy pile for environmental remediation of coal gangue stockyards according to claim 1, wherein the pile body (1) has a closed tubular structure and is composed of an underground part (11) and an above-ground part (12), the underground part (11) has an annular protrusion on its surface and is used to improve the stability of embedding in the coal gangue pile (5), and the above-ground part (12) has a smooth surface and is used to connect the underground part (11) and a radiator (2).

3. 2. The active heat exchange energy pile for environmental remediation of coal gangue stockyards according to claim 1, wherein the radiator (2) is located above the pile body (1) and comprises a main frame (21), a plurality of heat sinks (22), a fan (23), and a parasol (24), wherein the main frame (21) has a rectangular parallelepiped structure and is made of pure aluminum, the plurality of heat sinks (22) are also made of pure aluminum and are vertically placed outside the main frame (21) and evenly distributed, the fan (23) is located above the plurality of heat sinks (22) and is used to quickly dissipate heat, and the parasol (24) is located above the fan (23) and is used to block direct sunlight and prevent the plurality of heat sinks (22) from overheating.

4. 2. The active heat exchange energy pile for environmental remediation of coal gangue stockyards according to claim 1, wherein the heat exchange system (3) is installed inside the pile body (1) and the radiator (2), and comprises a heat transfer pipe (31), a draft pump (32), and a heat dissipation pipe (33). The heat transfer pipe (31) is located inside the pile body (1), made of pure copper, and contains a heat transfer liquid (Great Wall L-QC320 mineral oil-type synthetic heat transfer oil). The heat transfer liquid is spirally wound underground (11) to increase the heat absorption contact area. The draft pump (32) is located between the heat transfer pipe (31) and the heat dissipation pipe (33) inside the radiator (2), and is used to drive the heat transfer liquid to circulate along the heat transfer pipe (31) and the heat dissipation pipe (33). The heat dissipation pipe (33) is made of pure copper and is spirally wound on the inner wall of the main frame (21) of the radiator (2).

5. The solar power generation and control system (4) comprises a controller (41), a plurality of solar power generation panels (42), a lithium battery (43), and a plurality of temperature sensors (44). The controller (41) is located at the top of the device and is used to control the opening and closing of the fan (23) and the draft pump (32) and to collect signals from the plurality of temperature sensors (44). The plurality of solar power generation panels (42) are evenly distributed below the controller (41) and are used for power generation. The lithium battery (43) is connected to a plurality of solar panels (42).

2. The active heat exchange energy pile for environmental remediation of a coal gangue stockyard according to claim 1, characterized in that the pile is located below the photovoltaic panels (42), and is used to store and transport electricity generated by the photovoltaic panels (42) to the fan (23), the draft pump (32), the controller (41), and the temperature sensors (44), the temperature sensors (44) being located on the inner wall of the underground part (11) of the pile body (1), and capable of sensing the temperature in the coal gangue pile (5) and transmitting a signal to the controller (41).

6. 10. The active heat exchange energy pile for environmental remediation of coal gangue stockyards according to claim 1, characterized in that the heat transfer mode of the device is as follows: heat inside the coal gangue pile (5) is transferred through the pile body (1) to the heat transfer liquid in the heat transfer pipe (31); the heat transfer liquid flows along the heat transfer pipe (31) into the heat dissipation pipe (33) under the driving of the draft pump (32), and transfers the heat to the radiator (2); the heat is dissipated to the atmosphere by the multiple heat sinks (22) under the action of the fan (23); after cooling, the heat transfer liquid returns to the heat transfer pipe (31), and the above process is repeated.

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