Geothermal exploitation pipe for geothermal well

Abstract

According to the technical scheme, the geothermal well geothermal exploitation pipe is characterized in that the geothermal well geothermal exploitation pipe comprises an outer pipe, two inner pipes are arranged in the outer pipe, the bottom face of the outer pipe is sleeved with a heat conduction shell, the heat conduction shell is made of heat conduction silica gel, a heating pipe is arranged on the bottom face of the outer pipe, the heating pipe is located in the heat conduction shell, and the heat conduction silica gel is arranged in the heating pipe. First connecting discs are fixedly installed at the two ends of the heating pipe correspondingly, the heating pipe communicates with the first connecting discs, the two inner pipes communicate with the heating pipe through the first connecting discs, a heat conduction shell is arranged, and through the design of the heat conduction shell and the heating pipe, a water source can be added from the outside, and when the water passes through the heating pipe part, the water source can be heated, and the heating efficiency is improved. By arranging the heat conduction shell, the geothermal energy guided by the heat conduction shell can be absorbed, underground energy is exploited on the premise that underground water is not exploited, the earth crust problem caused by excessive exploiting of underground water is avoided, and by arranging the clamping blocks, the multiple clamping blocks can contract towards the center when the clamping rings are inserted.

Description

Technical Field

[0001] The utility model relates to the technical field of geothermal production pipes, in particular to a geothermal production pipe for geothermal wells. Background Art

[0002] Geothermal wells refer to methods and devices for generating electricity from geothermal energy at depths of approximately 3,500 meters or from hot spring water with a temperature greater than 30°C. Geothermal energy is categorized as high-temperature, medium-temperature, and low-temperature. High-temperature geothermal energy is defined as energy above 150°C and present as steam; medium-temperature geothermal energy is defined as energy between 90°C and 150°C and present as a mixture of water and steam; and low-temperature geothermal energy is defined as energy above 25°C and below 90°C and present as warm water, lukewarm water, or hot water.

[0003] A geothermal composite mining pipe for geothermal wells with publication number CN212431375U has the following defects during use:

[0004] The geothermal composite mining pipe for geothermal wells is reasonably designed, easy to use, and has the advantages of easy installation and disassembly. The utility model uses the method of directly extracting groundwater to mine geothermal wells. However, in actual use, the mining of geothermal wells only requires the extraction of heat, and there is no need to extract groundwater. Excessive extraction of groundwater will have a certain degree of impact on the earth's crust. For this reason, we propose a geothermal mining pipe for geothermal wells. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a geothermal extraction pipe for geothermal wells, which solves the problem that the extraction of geothermal wells only requires the extraction of heat, without the need to extract groundwater, and excessive extraction of groundwater will have a certain degree of impact on the earth's crust.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A geothermal extraction pipe for a geothermal well comprises an outer pipe, two inner pipes are arranged inside the outer pipe, a heat-conducting shell is provided on the bottom surface of the outer pipe, the heat-conducting shell is made of heat-conducting silicone, a heating pipe is provided on the bottom surface of the outer pipe, the heating pipe is located inside the heat-conducting shell, a first connecting disk is fixedly installed at both ends of the heating pipe, the heating pipe is connected to the first connecting disk, and the two inner pipes are connected to the heating pipe through the first connecting disk.

[0008] Preferably, the heating tube is composed of a plurality of end curved tubes.

[0009] Preferably, a first fixing plate is fixedly installed inside the outer tube, and two limiting holes are provided on the top surface of the first fixing plate.

[0010] Preferably, a connecting sleeve is fixedly installed on the top end of the inner tube, an extension tube is provided inside the connecting sleeve, and the extension tube is communicated with the inner tube.

[0011] Preferably, a second fixing plate is fixedly installed inside the extension tube, a top surface of the second fixing plate is provided with a plurality of fixing holes, the fixing holes are fan-shaped hole structures, and a filter plate is fixedly installed inside the fixing holes.

[0012] Preferably, a clamping ring is provided inside the connecting sleeve, and a plurality of connecting rods are fixedly installed on the outer wall of the clamping ring. The clamping ring is fixedly installed inside the connecting sleeve through the connecting rods. A second connecting disk is fixedly installed on the bottom surface of the second fixed plate, and a plurality of clamping blocks are fixedly installed on the bottom surface of the second connecting disk. The clamping block consists of a fan-shaped prism part and a fan-shaped pyramid part at the bottom end.

[0013] In summary, the present invention has the following beneficial effects:

[0014] 1. By setting up a heat-conducting shell and designing the heat-conducting shell and the heating pipe, water can be added from the outside. When passing through the heating pipe, it can absorb the geothermal energy introduced by the heat-conducting shell, thereby exploiting underground energy without exploiting groundwater, thus avoiding crustal problems caused by excessive exploitation of groundwater;

[0015] 2. By setting the clamping blocks, several clamping blocks can be retracted toward the center when the clamping ring is inserted. After insertion, the clamping blocks return to their original positions due to their own elastic force, thereby strengthening the stability of the connection between the inner tube and the extension tube and avoiding falling off during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the extension tube structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the inner tube structure of the utility model.

[0020] Figure numerals: 1, outer tube; 2, inner tube; 3, heat-conducting shell; 4, heating tube; 5, first connecting plate; 6, first fixing plate; 7, limiting hole; 8, connecting sleeve; 9, extension tube; 10, second fixing plate; 11, fixing hole; 12, filter plate; 13, clamping ring; 14, connecting rod; 15, second connecting plate; 16, clamping block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] refer to Figure 1-Figure 4 , a geothermal extraction pipe for a geothermal well, comprising an outer tube 1, two inner tubes 2 are arranged inside the outer tube 1, a heat-conducting shell 3 is provided on the bottom surface of the outer tube 1, the heat-conducting shell 3 is made of heat-conducting silicone, a heating tube 4 is provided on the bottom surface of the outer tube 1, the heating tube 4 is located inside the heat-conducting shell 3, both ends of the heating tube 4 are fixedly installed with a first connecting plate 5, the heating tube 4 is connected to the first connecting plate 5, and the two inner tubes 2 are connected to the heating tube 4 through the first connecting plate 5. Through the design of the heat-conducting shell 3 and the heating tube 4, water can be added from the outside. When it passes through the heating tube 4, it can absorb the geothermal energy introduced by the heat-conducting shell 3, thereby exploiting underground energy without exploiting groundwater, thereby avoiding crustal problems caused by excessive exploitation of groundwater;

[0023] The heating tube 4 is composed of several bent end tubes. Through the design of the heating tube 4, the time for the added water to circulate in the heating part inside the device can be extended, so that the heating effect is higher and higher mining efficiency is obtained. A first fixing plate 6 is fixedly installed inside the outer tube 1. Two limiting holes 7 are provided on the top surface of the first fixing plate 6. Through the design of the limiting holes 7, the two inner tubes 2 can be limited to prevent the two inner tubes 2 and the heating tube 4 from moving relative to each other inside the outer tube 1, affecting the actual mining effect. A connecting sleeve 8 is fixedly installed on the top of the inner tube 2. An extension tube 9 is provided inside the connecting sleeve 8. The extension tube 9 is connected to the inner tube 2. Through the design of the connecting sleeve 8 and the extension tube 9, the inner tube 2 can be extended. The process of adding water to the inside or connecting to the external pumping structure will be simplified, making the use of the equipment more convenient. A second fixing plate 10 is fixedly installed inside the extension tube 9. Several fixing holes 11 are provided on the top surface of the second fixing plate 10. The fixing hole 11 is a fan-shaped hole structure. The inside of the fixing hole 11 is fixedly installed There is a filter plate 12. Through the design of the filter plate 12, the water that has been pumped out can be filtered. Since geothermal wells are generally deep and the pipeline design is also long, impurities brought by the water and those inside the pipeline may fall into the water when the water is added. It is necessary to filter them through the filter plate 12, which is convenient for recycling the collected water. A clamping ring 13 is provided inside the connecting sleeve 8. Several connecting rods 14 are fixedly installed on the outer wall of the clamping ring 13. The clamping ring 13 is fixedly installed inside the connecting sleeve 8 through the connecting rod 14. A second connecting disk 15 is fixedly installed on the bottom surface of the second fixing plate 10. Several clamping blocks 16 are fixedly installed on the bottom surface of the second connecting disk 15. The clamping block 16 consists of a fan-shaped prism part and a fan-shaped prism part at the bottom end. Through the design of the clamping block 16, several clamping blocks 16 can be retracted toward the center when the clamping ring 13 is inserted. After insertion, the clamping block 16 returns to its original position through its own elastic force, thereby strengthening the stability of the connection between the inner tube 2 and the extension tube 9 and avoiding falling off during use.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geothermal production pipe for a geothermal well, comprising an outer pipe (1), characterized in that: Two inner tubes (2) are arranged inside the outer tube (1); a heat-conducting shell (3) is provided on the bottom surface of the outer tube (1); the heat-conducting shell (3) is made of heat-conducting silica gel; a heating tube (4) is provided on the bottom surface of the outer tube (1); the heating tube (4) is located inside the heat-conducting shell (3); first connecting plates (5) are fixedly installed at both ends of the heating tube (4); the heating tube (4) is connected to the first connecting plate (5); and the two inner tubes (2) are connected to the heating tube (4) through the first connecting plate (5).

2. The geothermal production pipe for geothermal wells according to claim 1, characterized in that: The heating tube (4) is composed of a plurality of end curved tubes.

3. The geothermal production pipe for geothermal wells according to claim 1, characterized in that: A first fixing plate (6) is fixedly installed inside the outer tube (1), and two limiting holes (7) are provided on the top surface of the first fixing plate (6).

4. The geothermal production pipe for geothermal wells according to claim 1, characterized in that: A connecting sleeve (8) is fixedly mounted on the top end of the inner tube (2), an extension tube (9) is sleeved inside the connecting sleeve (8), and the extension tube (9) is in communication with the inner tube (2).

5. The geothermal production pipe for geothermal wells according to claim 4, characterized in that: A second fixing plate (10) is fixedly installed inside the extension tube (9), and a plurality of fixing holes (11) are provided on the top surface of the second fixing plate (10). The fixing holes (11) are fan-shaped hole structures, and a filter plate (12) is fixedly installed inside the fixing holes (11).

6. The geothermal production pipe for geothermal wells according to claim 5, characterized in that: A clamping ring (13) is provided inside the connecting sleeve (8), and a plurality of connecting rods (14) are fixedly mounted on the outer wall surface of the clamping ring (13). The clamping ring (13) is fixedly mounted inside the connecting sleeve (8) via the connecting rods (14). A second connecting disk (15) is fixedly mounted on the bottom surface of the second fixing plate (10), and a plurality of clamping blocks (16) are fixedly mounted on the bottom surface of the second connecting disk (15). The clamping blocks (16) are composed of a fan-shaped prism portion and a fan-shaped prism portion at the bottom end.

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