A geothermal drilling drainage device based on the principle of buoyancy

Abstract

The present application provides a kind of geothermal drilling drainage device based on buoyancy principle.The geothermal drilling drainage device based on buoyancy principle includes geothermal well;Filtering mechanism;Limiting mechanism;Drainage mechanism, the side wall of the limiting mechanism is connected with the suction pipe;The side wall of the fixed net is wrapped with the geotextile layer, and the side wall of the fixed net is installed with multiple floating plates;Adjusting mechanism, the bottom end of the fixed net is fixedly connected with the cylinder, the side wall of the cylinder is installed with the sealing ring and the communication pipe;The inside of the sealing ring is slidably connected with the first connecting rod, the first connecting rod is slidably connected with the inside of the second connecting rod;The bottom end of the first connecting rod is fixedly connected with the compression plug, the compression plug is slidably connected with the inside of the cylinder;Sealing mechanism;Compression mechanism.The geothermal drilling drainage device based on buoyancy principle provided by the present application has the advantages of changing the water intake height according to the water quantity inside the geothermal well, preventing the water intake from being blocked.

Description

Technical Field

[0001] This invention relates to the field of geothermal drilling technology, and in particular to a geothermal drilling drainage device based on the principle of buoyancy. Background Technology

[0002] Geothermal drilling is the process of drilling to obtain geothermal steam and water. It is an important and specialized technology, and an essential means of exploring and extracting geothermal fluids.

[0003] When extracting geothermal water from a geothermal well, the water intake is usually installed at the bottom of the well to facilitate the extraction of the geothermal water. However, as the geothermal water is continuously discharged through the water intake, the geothermal water carries impurities such as mud and sand from inside the geothermal well and gradually converges towards the water intake, resulting in more and more impurities accumulating at the water intake and making it easy to become blocked.

[0004] Therefore, it is necessary to provide a new geothermal well drainage device based on the principle of buoyancy to solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a geothermal well drainage device based on the principle of buoyancy, which changes the height of the water intake according to the water volume inside the geothermal well and prevents the water intake from being blocked.

[0006] To solve the above-mentioned technical problems, the present invention provides a geothermal well drainage device based on the principle of buoyancy, comprising: a geothermal well; a filtration mechanism fixed to the bottom of the geothermal well; a limiting mechanism installed at the top of the filtration mechanism; and a drainage mechanism installed inside the geothermal well, the drainage mechanism including a hose, a water pump, a float plate, a liquid level sensor, a fixing net, a geotextile layer, and a suction pipe. The side wall of the limiting mechanism is connected to the suction pipe, and both ends of the hose are fixedly connected to the suction pipe and the water pump, respectively. The suction pipe is fixedly connected inside the fixing net, and the side wall of the fixing net is wrapped with the geotextile layer. Multiple floating plates are installed on the wall; an adjustment mechanism is connected to the fixed net, the adjustment mechanism includes a cylinder, a connecting pipe, a compression plug, a sealing ring, a first connecting rod, and a second connecting rod, the bottom end of the fixed net is fixedly connected to the cylinder, the sealing ring and the connecting pipe are installed on the side wall of the cylinder; the first connecting rod is slidably connected to the inside of the sealing ring, and the first connecting rod is slidably connected to the inside of the second connecting rod; the bottom end of the first connecting rod is fixedly connected to the compression plug, and the compression plug is slidably connected to the inside of the cylinder; a sealing mechanism is installed at the bottom end of the cylinder; a compression mechanism is connected to the drainage mechanism and the second connecting rod.

[0007] Preferably, the filtration mechanism includes a gravel layer, a fine sand layer, a filter cylinder, and a fixing mesh. The gravel layer is laid at the bottom of the geothermal well, and the fine sand layer is arranged inside the gravel layer. The filter cylinder is placed in the center of the fine sand layer, and the fixing mesh is installed on the surface of the filter cylinder and the fine sand layer.

[0008] Preferably, the limiting mechanism includes a support rod, an electromagnetic sleeve, and a fixing rod. The top end of the fixing net is fixedly connected to the support rod, the side wall of the support rod is slidably connected to the electromagnetic sleeve, and the two ends of the fixing rod are respectively fixedly connected to the electromagnetic sleeve and the suction tube.

[0009] Preferably, the surface area of ​​the float gradually decreases along the direction from the top of the fixed net to the bottom of the fixed net, and the liquid level sensor is installed on the surface of one of the floats.

[0010] Preferably, the compression mechanism includes a hydraulic rod, a fixed sleeve, a rubber pad, and a limiting ring. The hydraulic rod is fixedly connected to the side wall of the suction tube, and the fixed sleeve is slidably connected to the side wall of the suction tube. The top surface of the fixed sleeve is connected to the hydraulic rod. The rubber pad is installed at the edge of the side wall of the fixed sleeve, and the rubber pad is slidably connected to the fixed mesh. The limiting ring is installed at the bottom end of the suction tube, and the limiting ring abuts against the fixed sleeve.

[0011] Preferably, the bottom end of the fixing sleeve is symmetrically fixedly connected to the second connecting rod, and the second connecting rod and the first connecting rod are slidably connected to the interior of the fixing net.

[0012] Preferably, the sealing mechanism includes a through hole, a piston, a spring, a slide rod, and a fixing block. The fixing block is installed inside the cylinder, and the slide rod is installed on the side wall of the fixing block. The side wall of the slide rod is slidably connected to the piston. The through holes are symmetrically provided at the bottom end of the cylinder, and the through holes are slidably connected to the piston. The two ends of the spring are respectively fixedly connected to the piston and the fixing block, and the spring is fitted onto the side wall of the slide rod.

[0013] Compared with related technologies, the geothermal well drainage device based on the principle of buoyancy provided by this invention has the following beneficial effects:

[0014] This invention provides a geothermal well drainage device based on the principle of buoyancy. When extracting geothermal water from the basement, multiple floating plates are installed on the surface of the fixed net. The floating plates generate buoyancy when in contact with the water, causing the fixed net to float in the water. When the water pump operates, suction is generated inside the hose and the suction pipe, thereby drawing water out of the fixed net. Water from inside the geothermal well penetrates the geotextile layer to enter the interior of the fixed net. The geotextile layer prevents impurities from entering the interior of the fixed net, avoiding blockage of the suction pipe. During the pumping process, as the water level inside the geothermal well changes, the fixed net and floating plates always float on the upper layer of water, extracting the upper layer of clean water. The height of the fixed net varies with the water level. The system continuously adjusts according to water level changes to prevent the fixed net from continuously drawing water from the same location for extended periods, thus extending the service life of the geotextile layer and reducing clogging. When the height of the fixed net needs to be changed, the compression mechanism operates, causing the second connecting rod, the first connecting rod, and the compression plug to move up and down. The compression plug moves up and down inside the cylinder, drawing water into the cylinder and increasing the weight of the cylinder and the fixed net. This causes the fixed net and the cylinder to move downwards. Simultaneously, the downward movement of the compression plug forces water out of the cylinder, reducing the weight of the cylinder and the fixed net, thus allowing them to move downwards and changing the height of the fixed net for easier water intake. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the geothermal well drainage device based on the principle of buoyancy provided by the present invention;

[0016] Figure 2 for Figure 1 The diagram shows an enlarged view of the structure at point A.

[0017] Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point B.

[0018] Figure 4 for Figure 2 The diagram shows an enlarged view of the structure at point C.

[0019] Figure 5 A schematic diagram of the circuit structure provided by the present invention.

[0020] Numbered in the diagram: 1. Geothermal well; 2. Drainage mechanism; 21. Hose; 22. Water pump; 23. Float; 24. Liquid level sensor; 25. Fixing net; 26. Geotextile layer; 27. Suction pipe; 3. Sealing mechanism; 31. Through hole; 32. Piston; 33. Spring; 34. Sliding rod; 35. Fixing block; 4. Limiting mechanism; 41. Support rod; 42. Electromagnetic sleeve; 43. Fixing rod; 5. Adjusting mechanism; 51. Cylinder; 52. Connecting pipe; 53. Compression plug; 54. Sealing ring; 55. First connecting rod; 56. Second connecting rod; 6. Filtration mechanism; 61. Crushed stone layer; 62. Fine sand layer; 63. Filter cartridge; 64. Fixing net; 7. Compression mechanism; 71. Hydraulic rod; 72. Fixing sleeve; 73. Rubber pad; 74. Limiting ring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of the structure of the geothermal well drainage device based on the principle of buoyancy provided by the present invention; Figure 2 for Figure 1 The diagram shows an enlarged view of the structure at point A. Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point B. Figure 4 for Figure 2 The diagram shows an enlarged view of the structure at point C. Figure 5This is a schematic diagram of the circuit structure provided by the present invention. The geothermal well drainage device based on the buoyancy principle includes: a geothermal well 1; a filter mechanism 6, fixed to the bottom of the geothermal well 1; a limiting mechanism 4, installed at the top of the filter mechanism 6; and a drainage mechanism 2, installed inside the geothermal well 1, comprising a hose 21, a water pump 22, floats 23, a liquid level sensor 24, a fixing net 25, a geotextile layer 26, and a suction pipe 27. The sidewall of the limiting mechanism 4 is connected to the suction pipe 27, and both ends of the hose 21 are fixedly connected to the suction pipe 27 and the water pump 22, respectively. The suction pipe 27 is fixedly connected inside the fixing net 25, the sidewall of the fixing net 25 is wrapped with the geotextile layer 26, and multiple floats 23 are installed on the sidewall of the fixing net 25. The adjustment mechanism 5 is connected to the fixed net 25. The adjustment mechanism 5 includes a cylinder 51, a connecting pipe 52, a compression plug 53, a sealing ring 54, a first connecting rod 55, and a second connecting rod 56. The bottom end of the fixed net 25 is fixedly connected to the cylinder 51. The sealing ring 54 and the connecting pipe 52 are installed on the side wall of the cylinder 51. The first connecting rod 55 is slidably connected to the inside of the sealing ring 54, and the first connecting rod 55 is slidably connected to the inside of the second connecting rod 56. The bottom end of the first connecting rod 55 is fixedly connected to the compression plug 53, and the compression plug 53 is slidably connected to the inside of the cylinder 51. A sealing mechanism 3 is installed at the bottom end of the cylinder 51. A compression mechanism 7 is connected to the drainage mechanism 2 and the second connecting rod 56.

[0023] The filtration mechanism 6 includes a gravel layer 61, a fine sand layer 62, a filter cylinder 63, and a fixing net 64. The gravel layer 61 is laid at the bottom of the geothermal well 1, and the fine sand layer 62 is arranged inside the gravel layer 61. The filter cylinder 63 is placed in the center of the fine sand layer 62, and the fixing net 64 is installed on the surface of the filter cylinder 63 and the fine sand layer 62. In order to facilitate water from inside the soil to pass through the gravel layer 61 and the fine sand layer 62 into the interior of the geothermal well 1, the gravel layer 61 and the fine sand layer 62 filter impurities in the water to prevent impurities from entering the interior of the geothermal well 1, and the filter cylinder 63 facilitates the precipitation of water from inside the fine sand layer 62 into the interior of the geothermal well 1.

[0024] The limiting mechanism 4 includes a support rod 41, an electromagnetic sleeve 42, and a fixing rod 43. The top end of the fixing net 64 is fixedly connected to the support rod 41, and the side wall of the support rod 41 is slidably connected to the electromagnetic sleeve 42. The two ends of the fixing rod 43 are respectively fixedly connected to the electromagnetic sleeve 42 and the suction tube 27. In order to facilitate the up-and-down movement of the suction tube 27, the suction tube 27 drives the electromagnetic sleeve 42 to move up and down along the support rod 41, thereby making the suction tube 27 and the fixing net 25 move linearly inside the geothermal well 1.

[0025] The surface area of ​​the float plate 23 gradually decreases from the top of the fixed net 25 to the bottom of the fixed net 25 in order to increase the buoyancy of the surface of the fixed net 25 and make it easier for the fixed net 25 to float in the water. The liquid level sensor 24 is installed on the surface of one of the float plates 23 to facilitate the detection of the water level inside the geothermal well 1.

[0026] The compression mechanism 7 includes a hydraulic rod 71, a fixing sleeve 72, a rubber pad 73, and a limiting ring 74. The hydraulic rod 71 is fixedly connected to the side wall of the suction tube 27, and the fixing sleeve 72 is slidably connected to the side wall of the suction tube 27. The top surface of the fixing sleeve 72 is connected to the hydraulic rod 71. The rubber pad 73 is installed at the edge of the side wall of the fixing sleeve 72, and the rubber pad 73 is slidably connected to the fixing net 25. The limiting ring 74 is installed at the bottom end of the suction tube 27, and the limiting ring 74 abuts against the fixing net 25. The sleeve 72 is designed to facilitate the movement of the hydraulic rod 71, which drives the fixed sleeve 72 and the rubber pad 73 downwards. When the rubber pad 73 moves downwards, the water inside the fixed net 25 pushes the rubber pad 73 upwards, causing the rubber pad 73 to open up and move downwards tightly against the inner wall of the fixed net 25. The rubber pad 73 pushes the water inside the fixed net 25 downwards, causing the water to be discharged from the fixed net 25 and the geotextile layer 26, backflushing the geotextile layer 26 and preventing it from becoming clogged.

[0027] The bottom end of the fixing sleeve 72 is symmetrically fixedly connected to the second connecting rod 56, and the second connecting rod 56 and the first connecting rod 55 are slidably connected to the inside of the fixing net 25. In order to facilitate the up and down movement of the fixing sleeve 72, the second connecting rod 56 and the first connecting rod 55 are driven to move up and down.

[0028] The sealing mechanism 3 includes a through hole 31, a piston 32, a spring 33, a slide rod 34, and a fixing block 35. The fixing block 35 is installed inside the cylinder 51, and the slide rod 34 is installed on the side wall of the fixing block 35. The piston 32 is slidably connected to the side wall of the slide rod 34. The through holes 31 are symmetrically provided at the bottom end of the cylinder 51, and the through holes 31 are slidably connected to the piston 32. The two ends of the spring 33 are respectively fixedly connected to the piston 32 and the fixing block 35, and the spring 33 is fitted onto the side wall of the slide rod 34. When the compression plug 53 moves up and down inside the cylinder 51, the water moves inside the cylinder 51 and pushes the piston 32 out from inside the through hole 31, opening the through hole 31 to facilitate the movement of water inside the cylinder 51. When the compression plug 53 does not move, the spring 33 pushes the piston 32 to close the through hole 31, thereby closing the cylinder 51.

[0029] The working principle of the geothermal well drainage device based on the buoyancy principle provided by this invention is as follows: Multiple float plates 23 are installed on the surface of the fixed net 25. The float plates 23 generate buoyancy when in contact with water, causing the fixed net 25 to float in the water. When the water pump 22 operates, it generates suction inside the hose 21 and the suction pipe 27, thereby drawing water out of the fixed net 25. Water from inside the geothermal well 1 penetrates the geotextile layer 26 into the fixed net 25. The geotextile layer 26 prevents impurities from entering the fixed net 25, thus avoiding blockage of the suction pipe 27. During the pumping process, as the water level inside the geothermal well 1 changes, the fixed net 25 and float plates 23 always float on the upper layer of water, drawing out the upper layer of clean water, reducing the probability of impurities contacting the geotextile layer 26. Furthermore, the height of the fixed net 25 continuously changes with the water level, preventing the fixed net 25 from continuously drawing water from the same position for a long time, extending the service life of the geotextile layer 1, and reducing blockage. When the suction pipe 27 moves up and down, it drives the electromagnetic sleeve 42 to move up and down along the support rod 41, thereby causing the suction pipe 27 and the fixed net 25 to move linearly inside the geothermal well 1. The liquid level sensor 24 is installed on the surface of the float 23 to facilitate the detection of the water level inside the geothermal well 1. When it is necessary to change the height of the fixed net 25, the central processing unit operates to open the hydraulic rod 71. The movement of the hydraulic rod 71 drives the fixed sleeve 72 to move up and down. When the fixed sleeve 72 moves upward, it drives the second connecting rod 56 to move upward. The first connecting rod 55 slides out from inside the second connecting rod 56. After the top of the first connecting rod 55 is locked inside the second connecting rod 56, the upward movement of the second connecting rod 56 drives the first connecting rod 55 and the compression plug 53 to move upward. The compression plug 53 moves upward inside the cylinder 51, drawing water into the cylinder 51. The water moving inside the cylinder 51 pushes the piston 3. 2. The piston 32 slides out from the inside of the through hole 31, and moves along the slide rod 34 to compress the spring 33, opening the through hole 31 to facilitate water entering the interior of the cylinder 51. When the compression plug 53 does not move, the spring 33 extends and pushes the piston 32 to close the through hole 31, thereby closing the cylinder 51 and increasing the overall weight of the cylinder 51 and the fixed net 64, causing the fixed net 64 and the cylinder 51 to move downward. Similarly, when the compression plug 53 moves downward, it forces the water out of the cylinder 51, reducing the overall weight of the cylinder 51 and the fixed net 25, causing the fixed net 25 and the cylinder 51 to move downward, changing the height of the fixed net 25 for easier water collection.When the geotextile layer 26 needs to be cleaned, the central processing unit activates the electromagnetic sleeve 42, causing it to attract the iron support rod 41 and fix the fixing net 25 in the water. The central processing unit then activates the hydraulic rod 71, which moves the fixing sleeve 72 and the rubber pad 73 downwards. As the rubber pad 73 moves downwards, the water inside the fixing net 25 pushes the rubber pad 73 upwards, causing it to expand and press tightly against the inner side of the fixing net 25. As the wall moves downwards, the rubber pad 73 squeezes the water inside the fixing net 25 downwards, causing the water to drain from the fixing net 25 and the geotextile layer 26, thus backflushing the geotextile layer 26 and preventing it from becoming clogged. When the rubber pad 73 moves upwards, it contracts and separates from the inner wall of the fixing net 25, facilitating the flow of water inside the fixing net 25. As the rubber pad 73 moves up and down, it continuously backflushes the geotextile layer 26, preventing it from becoming clogged.

[0030] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A geothermal well drainage device based on the principle of buoyancy, characterized in that, include: Geothermal wells; A filtration mechanism, which is fixed to the bottom end of the geothermal well; A limiting mechanism is installed at the top of the filtering mechanism; A drainage mechanism is installed inside the geothermal well. The drainage mechanism includes a hose, a water pump, floats, a liquid level sensor, a first fixing net, a geotextile layer, and a suction pipe. The side wall of the limiting mechanism is connected to the suction pipe, and the two ends of the hose are respectively fixedly connected to the suction pipe and the water pump. The suction pipe is fixedly connected inside the first fixing net, the side wall of the first fixing net is wrapped with the geotextile layer, and multiple floats are installed on the side wall of the first fixing net. An adjusting mechanism is connected to the first fixed net. The adjusting mechanism includes a cylinder, a connecting pipe, a compression plug, a sealing ring, a first connecting rod, and a second connecting rod. The bottom end of the first fixed net is fixedly connected to the cylinder. The sealing ring is installed on the upper wall of the cylinder, and the connecting pipe is installed on the side wall of the cylinder. The first connecting rod is slidably connected to the inside of the sealing ring, and the first connecting rod is slidably connected to the inside of the second connecting rod. The bottom end of the first connecting rod is fixedly connected to the compression plug, and the compression plug is slidably connected to the inside of the cylinder. A closing mechanism is installed at the bottom end of the cylinder; The sealing mechanism includes a through hole, a piston, a spring, a slide rod, and a fixing block. The fixing block is installed inside the cylinder, and the slide rod is installed on the side wall of the fixing block. The side wall of the slide rod is slidably connected to the piston. The through holes are symmetrically provided at the bottom end of the cylinder, and the through holes are slidably connected to the piston. The two ends of the spring are respectively fixedly connected to the piston and the fixing block, and the spring is fitted onto the side wall of the slide rod. A compression mechanism, wherein the compression mechanism is connected to the drainage mechanism and the second connecting rod; The compression mechanism includes a hydraulic rod, a fixed sleeve, a rubber pad, and a limiting ring. The hydraulic rod is fixedly connected to the side wall of the suction tube, the fixed sleeve is slidably connected to the side wall of the suction tube, and the hydraulic rod is connected to the top surface of the fixed sleeve. The rubber pad is installed at the edge of the side wall of the fixing sleeve, and the rubber pad is slidably connected to the first fixing net; the limiting ring is installed at the bottom end of the suction tube, and the limiting ring abuts against the fixing sleeve.

2. The geothermal well drainage device based on the principle of buoyancy according to claim 1, characterized in that, The filtration mechanism includes a gravel layer, a fine sand layer, a filter cylinder, and a second fixing net. The gravel layer is laid at the bottom of the geothermal well, and the fine sand layer is arranged inside the gravel layer. The filter cylinder is placed in the center of the fine sand layer, and the second fixing net is installed on the surface of the filter cylinder and the fine sand layer.

3. The geothermal well drainage device based on the principle of buoyancy according to claim 2, characterized in that, The limiting mechanism includes a support rod, an electromagnetic sleeve, and a fixing rod. The top end of the second fixing net is fixedly connected to the support rod, the side wall of the support rod is slidably connected to the electromagnetic sleeve, and the two ends of the fixing rod are respectively fixedly connected to the electromagnetic sleeve and the suction tube.

4. The geothermal well drainage device based on the principle of buoyancy according to claim 1, characterized in that, The surface area of ​​the float gradually decreases from the top of the first fixed net to the bottom of the first fixed net, and the liquid level sensor is installed on the surface of one of the floats.

5. The geothermal well drainage device based on the principle of buoyancy according to claim 1, characterized in that, The bottom end of the fixing sleeve is symmetrically fixedly connected to the second connecting rod, and the second connecting rod and the first connecting rod are slidably connected to the inside of the first fixing net.

Images