Geothermal heat-preservation depth-keeping mining device

Abstract

The invention discloses a geothermal heat-preservation depth-keeping mining device, which relates to the technical field of geothermal mining, and comprises a geothermal well pipe, the top of the inner surface of the geothermal well pipe is fixedly connected with a wellhead hanger, the middle part of the wellhead hanger is fixedly connected with an extraction pipe, and the extraction pipe is divided into an upper extraction pipe and a lower extraction pipe in the geothermal well pipe; the outer surface of the end, located in the geothermal well pipe 1, of the top extraction pipe is sleeved with a heat preservation pump pipe, the lower end of the extractable pipe is fixedly connected with a geothermal pump, the top and the bottom of the geothermal pump are provided with a water outlet and a water inlet respectively, and the water outlet of the geothermal pump is communicated with the interior of the extraction pipe. The cleaning brush rotates and moves up and down, can be inserted into a gap of the sand filter screen through the deformation effect of the cleaning brush, and can continuously push and extrude sand and stones in the gap of the sand filter screen, so that the effect of cleaning the sand and stones on the sand filter screen is achieved, the phenomenon that a conventional horizontal brush sand filter screen cannot be effectively cleaned is avoided, and small sand and stones are prevented from blocking the sand filter screen; and the problem that effective filtering cannot be carried out is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of geothermal mining, and in particular to a geothermal heat preservation and fixed depth mining device. Background Art

[0002] Geothermal resources refer to the heat energy inside the earth. It is a clean and renewable energy source that can be used for power generation, heating, cooling, drying, hot spring bathing and many other purposes. Medium and deep geothermal can be divided into two types: hydrothermal and hot dry rock, buried hundreds to thousands of meters underground. The hydrothermal type has a natural fracture reservoir, and the hot dry rock type requires artificial construction of geothermal reservoirs. Both are eventually mined to the ground in the form of hot water or steam for use, and are generally extracted by electric pumps. The electric pump is installed in the pump chamber section of the wellbore of the geothermal well. Due to the pressure bearing capacity and installation diameter limitations of the electric pump, the geothermal electric pump needs to be installed in the shallow part of the wellbore, far away from the geothermal reservoir. The hot water enters the wellbore from the reservoir and flows upward along the wellbore. After being pressurized and lifted by the electric pump, it is pumped to the wellhead through the pump pipe.

[0003] Geothermal reservoirs generally have multiple layers, which is not conducive to the high-quality development and utilization of geothermal resources. When exploiting geothermal water at different depths, water mixing and geothermal water layer channeling will occur, and the stability of geothermal water quality cannot be guaranteed. At the same time, geothermal water layer channeling will loosen the strata sand and gravel at different depths, which will cause the geothermal water entering the geothermal well to contain more sand and gravel, and the sand and gravel will enter the electric pump, causing damage to the electric pump. Although there are cyclone desanders to separate the sand and gravel in the geothermal water, so that the extracted geothermal water contains less sand and gravel, some sand and gravel still enter the electric pump with the geothermal water, which will also cause damage to the electric pump. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a geothermal heat preservation and fixed depth mining device.

[0005] The technical solution is as follows: A geothermal heat preservation and fixed depth mining device comprises a geothermal well pipe, the top of the inner surface of the geothermal well pipe is fixedly connected to a wellhead hanger, the middle of the wellhead hanger is fixedly connected to a top production pipe, a bottom production pipe is arranged inside the geothermal well pipe, an outer surface of the production pipe at one end inside the geothermal well pipe is sheathed with a heat preservation pump pipe, a geothermal pump is fixedly connected to the lower end of the top production pipe, the top and bottom of the geothermal pump are respectively a water outlet and a water inlet, and the water outlet of the geothermal pump is connected to the inside of the top production pipe, The bottom water inlet of the geothermal heat pump is fixedly connected with a suction cylinder, the outer surface of the suction cylinder is evenly provided with through holes, the top of the suction cylinder is connected with the water inlet of the geothermal heat pump, the bottom of the suction cylinder is fixedly connected with a motor, the outer surface of the geothermal well pipe is provided with a plurality of symmetrical geothermal water inlets, the inner surface of the geothermal well pipe is fixedly connected with a packer corresponding to the position of the geothermal water inlet, the end of the packer facing the center of the geothermal well pipe is connected with the bottom production pipe, and the end of the packer away from the bottom production pipe is connected with the geothermal water inlet; The outer surface of the top production pipe is fixedly connected with a canning cylinder, the top of the canning cylinder is connected with the top production pipe, the geothermal heat pump is located inside the canning cylinder, the bottom of the canning cylinder is fixedly connected with a desanding cylinder, the bottom of the canning cylinder is connected with the desanding cylinder, the bottom of the desanding cylinder is connected with the bottom production pipe, a cyclone desander is arranged inside the desanding cylinder, the bottom of the cyclone desander is connected with the bottom production pipe, the top of the cyclone desander is fixedly connected with a tube, the bottom of the tube is fixedly connected with the bottom of the motor, and the output shaft of the motor extends to the inside of the tube; A filter assembly is arranged inside the sand removal cylinder, and the filter assembly includes a fixing ring fixedly connected to the inner surface of the sand removal cylinder by bolts. A filter frame is fixedly connected to the outer surface of the tube by bolts, and a plurality of sand filter nets are arranged on the fixing frame of the filter frame.

[0006] Furthermore, the filter frame is composed of an inner ring, a fixing frame and an outer ring in sequence, the outer ring of the filter frame is clamped inside the fixing ring, and the upper surface of the sand filter screen is flush with the upper surface of the filter frame fixing frame.

[0007] Furthermore, a rotating component is provided on the filter frame, and the rotating component includes a rotating groove provided on the upper surface of the inner ring of the filter frame, a rotating ring is slidably connected in the rotating groove, a circle of convex teeth is provided on the inner surface of the rotating ring, a first ball is movably connected between the outer diameter surface of the rotating ring and the wall of the rotating groove, two rotating plates are symmetrically fixedly connected to the outer surface of the rotating ring, a first magnetic disk is fixedly connected to the outer surface of the motor output shaft, a plastic plate corresponding to the position of the first magnetic disk is provided on the tube, a rotating shaft is rotatably connected to the inner ring of the filter frame, a gear corresponding to the position of the convex teeth of the rotating ring is fixedly connected to the outer surface of the rotating shaft, the gear is meshed with the convex teeth of the rotating ring, and a second magnetic disk corresponding to the position of the first magnetic disk is fixedly connected to the outer surface of the rotating shaft.

[0008] Furthermore, a stabilizing groove ring is fixedly connected to the upper surface of the outer ring of the filter frame, and rolling grooves are symmetrically provided on the groove wall of the stabilizing groove ring. The end of the rotating plate away from the rotating ring slides inside the stabilizing groove ring, and the end of the rotating plate located in the stabilizing groove ring is provided with a rotating groove. A second ball is movably connected in the rotating groove of the rotating plate, and the second ball rolls in the rolling groove of the stabilizing groove ring. Sealing rings are fixedly connected to the two rotating plates, and the sealing rings are in contact with the inner ring surface of the stabilizing groove ring.

[0009] Furthermore, a cleaning assembly is provided on the rotating plate, and the cleaning assembly includes a spring fixedly connected to the lower surface of the rotating plate, the bottom of the spring is fixedly connected to the cleaning plate, the lower surface of the cleaning plate is fixedly connected to a cleaning brush, the upper surface of the cleaning plate is fixedly connected to a movable block, and the top of the movable block is fixedly connected to a fixed bar.

[0010] Furthermore, the cleaning brush is a metal wire with elastic deformation, and the rotating plate is provided with a strip hole for the movable block to slide.

[0011] Furthermore, a wave assembly is provided on the fixed bar, and the wave assembly includes a connecting shaft fixedly connected to one end of the fixed bar close to the stabilizing groove ring, a roller is rotatably connected to the end of the connecting shaft away from the fixed bar, a corrugated ring is fixedly connected to the upper surface of the stabilizing groove ring, and the roller is in contact with the upper surface of the corrugated ring.

[0012] Furthermore, a beating assembly is provided on the rotating plate, and the beating assembly includes two groups of fixed rods fixedly connected to the left and right sides of the cleaning plate, each group of the fixed rods is provided with two, and a lifting rod is fixedly connected between the two fixed rods in each group. The two sides of the rotating plate are hinged with beating plates, and a lifting groove is opened in the middle of the beating plates, and the lifting rod slides inside the lifting groove.

[0013] Furthermore, a collecting assembly is provided at the bottom of the sand removal cylinder, and the collecting assembly includes a sand discharge port symmetrically opened at the bottom of the sand removal cylinder, a collecting ring is slidably connected to the inside of the sand removal cylinder, and a plurality of guide plates are evenly and fixedly connected to the inside of the collecting ring, and a collecting box is fixedly connected to the bottom of the sand removal cylinder, and a collecting port corresponding to the position of the sand discharge port is opened on the upper surface of the collecting box.

[0014] Furthermore, a sand pumping pipe is fixedly connected to the outer surface of the collection box, the sand pumping pipe extends to the top of the geothermal well pipe, and one end of the sand pumping pipe located at the top of the geothermal well pipe is connected to an external sand pumping pump.

[0015] As described above, the beneficial effects of a geothermal heat preservation and fixed depth mining device in the present invention are as follows: The sand filter can filter the small amount of sand and gravel remaining in the geothermal water to prevent the sand and gravel from being separated completely, which will lead to unstable geothermal water mining. At the same time, it also improves the quality of geothermal water mining. The cleaning brush can rotate and move up and down to insert into the gap of the sand filter through its deformation effect, and can continuously push the sand and gravel in the gap of the sand filter to achieve the effect of cleaning the sand filter, avoiding the phenomenon that the conventional horizontal brush sand filter cannot be effectively cleaned, and avoiding the problem that some fine sand and gravel block the sand filter, resulting in the sand filter being unable to filter effectively; The sand and gravel that escape from the gaps of the sand filter will also be thrown around again with the swirling geothermal water, thereby preventing the sand and gravel from getting stuck on the sand filter and affecting the filtration efficiency of the sand filter, and preventing the filtration efficiency of the sand filter from decreasing and affecting the flow rate of the geothermal water. The flow rate of the geothermal water can be increased by cleaning, avoiding excessive heat loss due to too slow a flow rate, so that the geothermal water extracted from the ground can maintain a higher temperature when it reaches the utilization site, thereby improving the energy utilization efficiency of the geothermal water. When the slapping plate swings downward, it will slap the sand filter screen, and the slapping of the slapping plate can loosen the gap between the sand and the sand filter screen, which is convenient for the cleaning brush to push, avoiding the problem that the sand and gravel are blocked in the gap of the sand filter screen and cannot be cleaned, thereby improving the cleaning efficiency of the cleaning brush for quick cleaning; The rotation of the guide plate will push the sand and gravel that fall into the collection ring, so that the sand and gravel can effectively enter the collection box through the sand discharge port and the collection port, avoiding the accumulation of sand and gravel inside the sand removal cylinder and affecting the subsequent separation of sand and gravel. In addition, the sand and gravel that fall into the collection box are extracted by an external sand pump, so that the sand and gravel are extracted into the external collection box on the ground through the sand extraction pipe, thereby realizing the collection of sand and gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is a sectional stereoscopic schematic diagram of the overall structure of the present invention; Figure 3 It is a sectional stereoscopic schematic diagram of the local structure of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at B in the middle; Figure 6 It is a three-dimensional schematic diagram of the motor, tube, cyclone desander and other components of the present invention; Figure 7 It is a three-dimensional schematic diagram of the sand filter screen, the second magnetic disk and the rotating ring of the present invention; Figure 8 It is a three-dimensional schematic diagram of the local structure of the cleaning component, the wave component and the beating component of the present invention; Fig. 9 It is a three-dimensional schematic diagram of the collecting box and collecting port and other components of the present invention; Fig.10 It is a three-dimensional schematic diagram of the sand discharge port, collection ring, guide plate and other components of the present invention.

[0017] Among them, the accompanying drawings in the present invention are: 1. Geothermal well pipe; 11. Wellhead hanger; 12. Top production pipe; 122. Bottom production pipe; 13. Insulated pump pipe; 14. Geothermal pump; 15. Suction tube; 16. Motor; 17. Geothermal water inlet; 18. Packer; 2. Canning cylinder; 21. Desanding cylinder; 22. Cyclone desanding device; 23. Tube; Filter assembly: 31, fixed collar; 32, filter frame; 33, sand filter net; Rotating assembly: 41, rotating groove; 42, rotating ring; 43, first ball; 44, rotating plate; 45, stabilizing groove ring; 46, second ball; 47, first magnetic disk; 48, plastic steel plate; 49, rotating shaft; 410, gear; 411, second magnetic disk; 412, sealing ring; Cleaning components: 51, spring; 52, cleaning plate; 53, cleaning brush; 54, movable block; 55, fixing bar; Wave assembly: 61, connecting shaft; 62, roller; 63, corrugated ring; Beating assembly: 71, fixing rod; 72, lifting rod; 73, beating plate; 74, lifting slot; Collection components: 81, sand discharge port; 82, collection ring; 83, drainage plate; 84, collection box; 85, collection port; 86, sand extraction pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] The embodiments provided by the present invention will be described in detail below: like Figures 1 to 3 , Figure 5 and Figure 6 As shown, a geothermal heat preservation fixed depth mining device includes a geothermal well pipe 1, a wellhead hanger 11 is fixedly connected to the top of the inner surface of the geothermal well pipe 1, a top extraction pipe 12 is fixedly connected to the middle of the wellhead hanger 11, a bottom extraction pipe 122 is arranged inside the geothermal well pipe 1, and an insulation pump pipe 13 is sleeved on the outer surface of the top extraction pipe 12 located at one end inside the geothermal well pipe 1, which can minimize the heat loss in the geothermal water extraction process. A geothermal pump 14 is fixedly connected to the lower end of the top extraction pipe 12, the top and bottom of the geothermal pump 14 are the water outlet and the water inlet respectively, and the water outlet of the geothermal pump 14 is connected to the inside of the top extraction pipe 12, and a suction tube 15 is fixedly connected to the bottom water inlet of the geothermal pump 14, and the outer surface of the suction tube 15 is evenly provided with through holes, the bottom of the suction tube 15 is closed, and the top of the suction tube 15 is connected to the water inlet of the geothermal pump 14. A motor 16 is fixedly connected to the bottom of the suction tube 15. A plurality of geothermal water inlets 17 arranged in a vertical linear array are provided on the outer surface of the bottom production pipe 122 corresponding to the lower part of the geothermal well pipe 1. A packer 18 corresponding to the position of the geothermal water inlet 17 is fixedly connected to the inner surface of the geothermal well pipe 1. The end of the packer 18 facing the center of the geothermal well pipe 1 is connected to the bottom production pipe 122, and the end of the packer 18 away from the bottom production pipe 122 is connected to the geothermal water inlet 17. The packer 18 blocks the geothermal water inlets 17 at different positions, so as to collect geothermal water at different depths, avoid water mixing and geothermal water layer channeling, and ensure the stability of geothermal water quality. The outer surface of the lower part of the top extraction pipe 12 is fixedly connected with the canning barrel 2, the bottom of the heat preservation pump pipe 13 is in contact with the top surface of the filling barrel 2, the geothermal pump 14 is located inside the canning barrel 2, the bottom of the filling barrel 2 is an outwardly expanded inverted funnel shape, the bottom of the canning barrel 2 is fixedly connected with a sand removal barrel 21 by bolts, the bottom of the canning barrel 2 is connected with the sand removal barrel 21, the bottom of the sand removal barrel 21 is funnel-shaped, the sand removal barrel 21 is fixedly connected with the bottom extraction pipe 122, the interior of the sand removal barrel 21 is provided with a cyclone desander 22, and a stirring device is provided inside the cyclone desander 22 A plurality of uniform strip holes are arranged and opened on the side wall of the cyclone desander 22, the desander cylinder 21 is connected with the bottom production pipe 122, the geothermal water enters the desander cylinder 21 through the bottom production pipe 122, the cyclone desander 22 is used to separate sand and gravel in the geothermal water, the top of the cyclone desander 22 is fixedly connected with a tube 23, the top of the tube 23 is fixedly connected with the bottom of the motor 16 by bolts, the output shaft of the motor 16 passes through the tube 23 and extends to the inside of the cyclone desander 22, and the output shaft of the motor 16 is connected with the stirring device of the cyclone desander 22; like Figures 3 to 7 As shown, a filter assembly for filtering sand and gravel is arranged inside the sand removal cylinder 21, and the filter assembly includes a fixing collar 31 fixedly connected to the inner surface of the sand removal cylinder 21 by bolts, and a filter frame 32 is fixedly connected to the outer surface of the tube 23 by bolts, as shown in FIG. Figure 6 As shown, the filter frame 32 is composed of an inner ring, a fixing frame and an outer ring in sequence outwardly, the fixing frame of the filter frame 32 is arranged in a circular array and fixedly connected to the lower part of the outer surface of the inner ring of the filter frame 32, the end of the fixing frame of the filter frame 32 away from the inner ring is fixedly connected to the lower part of the outer surface of the outer ring of the filter frame 32, the outer ring of the filter frame 32 is clamped in the inside of the fixing ring 31, and a plurality of sand filter nets 33 arranged in a circular array are provided on the fixing frame of the filter frame 32, and the upper surface of the sand filter nets 33 is flush with the upper surface of the fixing frame of the filter frame 32.

[0020] like Figure 4 and Figure 5 and Figure 7As shown, a rotating assembly for driving rotation is provided on the filter frame 32, and the rotating assembly includes a rotating groove 41 provided on the upper surface of the inner ring of the filter frame 32, a rotating ring 42 is slidably connected in the rotating groove 41, and the inner surface of the rotating ring 42 is provided with convex teeth arranged in a ring array, and a first ball 43 is movably connected between the outer diameter surface of the rotating ring 42 and the groove wall of the rotating groove 41, and the first ball 43 is used to reduce the friction of the rotating ring 42 when sliding in the rotating groove 41, so as to improve the smoothness of the rotation of the rotating ring 42, and the outer surface of the rotating ring 42 is symmetrically fixedly connected with two rotating plates 44, and the outer ring of the filter frame 32 extends out of the fixed sleeve 31 A stabilizing groove ring 45 is fixedly connected to the upper surface thereof, and rolling grooves are symmetrically provided on the groove wall of the stabilizing groove ring 45. One end of the rotating plate 44 away from the rotating ring 42 slides inside the stabilizing groove ring 45, and one end of the rotating plate 44 located inside the stabilizing groove ring 45 is provided with a rotating groove. A second ball 46 is movably connected in the rotating groove of the rotating plate 44, and the second ball 46 rolls in the rolling groove of the stabilizing groove ring 45. A sealing ring 412 is fixedly connected to the two rotating plates 44, and the sealing ring 412 is in contact with the inner ring surface of the stabilizing groove ring 45. The sealing ring 412 can prevent excessive geothermal water from entering the interior of the stabilizing groove ring 45 and affecting the rolling of the second ball 46. A first magnetic disk 47 is fixedly connected to the outer surface of the output shaft of the motor 16, a plastic plate 48 corresponding to the position of the first magnetic disk 47 is arranged on the tube 23, a rotating shaft 49 is rotatably connected to the inner ring of the filter frame 32, a gear 410 corresponding to the position of the convex teeth of the rotating ring 42 is fixedly connected to the outer surface of the rotating shaft 49, the gear 410 is meshed with the convex teeth of the rotating ring 42, a second magnetic disk 411 corresponding to the position of the first magnetic disk 47 is fixedly connected to the outer surface of the rotating shaft 49, the plastic plate 48 is made of polycarbonate and is relatively thin, and is used to reduce the gap between the first magnetic disk 47 and the second magnetic disk 411, and will not block the magnetism between the first magnetic disk 47 and the second magnetic disk 411.

[0021] like Figure 5 , Figure 7 and Figure 8 As shown, a cleaning assembly for cleaning sand and gravel in the sand filter net 33 is provided on the rotating plate 44, and the cleaning assembly includes a spring 51 fixedly connected to the lower surface of the rotating plate 44, and a cleaning plate 52 is fixedly connected to the bottom of the spring 51, and a cleaning brush 53 is fixedly connected to the lower surface of the cleaning plate 52. The cleaning brush 53 is a metal steel wire with elastic deformation, which is used to be inserted into the gap of the sand filter net 33 to push the sand and gravel, and a movable block 54 is fixedly connected to the upper surface of the cleaning plate 52. A strip hole for the movable block 54 to slide is opened on the rotating plate 44, and a fixing bar 55 is fixedly connected to the top of the movable block 54.

[0022] like Figure 5 and Figure 8As shown, a wave assembly for moving the cleaning brush 53 up and down is provided on the fixed bar 55, and the wave assembly includes a connecting shaft 61 fixedly connected to one end of the fixed bar 55 close to the stabilizing groove ring 45, and a roller 62 is rotatably connected to the end of the connecting shaft 61 away from the fixed bar 55, and a corrugated ring 63 is fixedly connected to the upper surface of the stabilizing groove ring 45, and the roller 62 is in contact with the upper surface of the corrugated ring 63.

[0023] like Figure 7 and Figure 8 As shown, a beating assembly for beating the sand filter screen 33 is provided on the rotating plate 44, and the beating assembly includes two groups of fixed rods 71 ​​fixedly connected to the left and right sides of the cleaning plate 52, each group of fixed rods 71 ​​is provided with two, and a lifting rod 72 is fixedly connected between the two fixed rods 71 ​​of each group, and beating plates 73 are hinged on both sides of the rotating plate 44, and a lifting groove 74 is opened in the middle of the beating plate 73, and the lifting rod 72 slides inside the lifting groove 74.

[0024] like Figure 2 , Figure 3 , Fig. 9 and Fig.10 As shown, a collecting assembly for collecting and separating sand and gravel is provided at the bottom of the sand removal cylinder 21, and the collecting assembly includes a sand discharge port 81 symmetrically opened at the bottom of the sand removal cylinder 21, a collecting ring 82 is slidably connected to the inside of the sand removal cylinder 21, and a plurality of drainage plates 83 are evenly and fixedly connected to the inside of the collecting ring 82, and a collecting box 84 is fixedly connected to the bottom of the sand removal cylinder 21, and a collecting port 85 corresponding to the position of the sand discharge port 81 is opened on the upper surface of the collecting box 84, and a sand extraction pipe 86 is fixedly connected to the outer surface of the collecting box 84, and the sand extraction pipe 86 extends to the top of the geothermal well pipe 1, and the end of the sand extraction pipe 86 located at the top of the geothermal well pipe 1 is connected to an external sand extraction pump.

[0025] In combination with the above preferred embodiments, the following is the entire working process and working principle of the above embodiments: Start the geothermal pump 14. After the geothermal pump 14 is started, it starts to pump geothermal water. The geothermal water enters the packer 18 from the geothermal water inlet 17, and then enters the bottom production pipe 122 from the packer 18. The existing controller controls the opening and closing of the packers 18 at different depths, so that the geothermal water at different depths enters the bottom production pipe 122, so as to avoid the layer cross-talk caused by the exploitation of geothermal water at different depths. Then, the geothermal water enters the desanding cylinder 21 from the bottom production pipe 122. After the motor 16 is started, the cyclone desanding device 22 is driven to operate, so that the geothermal water entering the desanding cylinder 21 forms a cyclone, and the geothermal water passes through the filter sand net 3. 3, and then enters the canning cylinder 2 through the suction cylinder 15, and then enters the geothermal pump 14 from the water inlet of the geothermal pump 14. The geothermal water flows from the water outlet of the geothermal pump 14 to the top production pipe 12 through the pumping of the geothermal pump 14. In the process of the above-mentioned geothermal water flowing, since the outside of the production pipe 12 is wrapped with the insulation pump pipe 13, the geothermal water entering the production pipe 12 can be insulated to prevent the heat loss of the geothermal water. Finally, the geothermal water is discharged from the top production pipe 12 to realize the production of geothermal water. A storage tank or a water reservoir can be connected to the top production pipe 12 to store the produced geothermal water.

[0026] The filtration component filters the geothermal water from which the sand and gravel have been separated: Under the action of the cyclone desander 22, the geothermal water forms a cyclone, and then the sand and gravel in the geothermal water are diffused to the surroundings, and most of the sand and gravel are separated. Most of the sand and gravel enter the interior of the collecting ring 82 under the action of gravity. Due to the upward pumping action of the geothermal pump 14, the geothermal water flows upward, and the geothermal water will carry a small part of the sand and gravel to flow upward. The small part of the sand and gravel remaining in the geothermal water can be filtered through the filtering action of the sand filter 33 to prevent the sand and gravel from being unable to be separated completely, resulting in unstable geothermal water mining, and at the same time, the mining quality of geothermal water is improved; The rotating assembly drives the cleaning assembly to rotate: When the output shaft of the above-mentioned motor 16 rotates, it will drive the first magnetic disk 47 to rotate, so that the rotation of the first magnetic disk 47 drives the second magnetic disk 411 to rotate through the magnetic field, and the second magnetic disk 411 drives the rotating shaft 49 to rotate, and the rotating shaft 49 drives the gear 410 to rotate, and the gear 410 drives the rotating ring 42 to rotate and slide inside the rotating ring 42, and when the rotating ring 42 slides, it can rotate more smoothly under the action of the rolling of the first ball 43. During the rotation of the rotating ring 42, the rotating plate 44 will be driven to rotate synchronously. The rotating plate 44 will drive the second ball 46 to roll in the rolling groove of the stabilizing groove ring 45 through the rotating groove. This can achieve stability during the rotation of the rotating plate 44, and the rotating plate 44 drives the movable block 54 and the cleaning brush 53 to rotate synchronously, and the cleaning brush 53 will slide on the upper surface of the sand filter net 33 during the rotation.

[0027] The wave component drives the cleaning component to clean the sand and gravel in the sand filter 33: During the rotation of the movable block 54, the movable block 54 will drive the fixed bar 55 to rotate synchronously. The fixed bar 55 drives the roller 62 to roll on the corrugated ring 63 through the connecting shaft 61. Under the action of the corrugated shape of the corrugated ring 63, the roller 62 can be squeezed by the corrugated protrusion to drive the fixed bar 55, the movable block 54 and the cleaning plate 52 to move upward and compress the spring 51. As the roller 62 continues to move to the concave part of the corrugated shape, the spring 51 will shrink and reset to pull the cleaning plate 52 to move downward. The cleaning plate 52 will drive the movable block 54 to move downward in the rotating plate 44. The cleaning plate 52 will also drive the cleaning brush 53 to move downward, so that the cleaning brush 53 can be inserted into the gap of the sand filter net 33. As the roller 62 continues to move, the cleaning plate 52 and the cleaning brush 53 will move up and down reciprocatingly. In this way, and because the cleaning brush 53 is a metal steel wire with elastic deformation, When the cleaning brush 53 rotates and moves up and down, it can be inserted into the gap of the sand filter net 33 through its deformation effect, and can continuously push the sand and gravel in the gap of the sand filter net 33 to achieve the effect of cleaning the sand and gravel on the sand filter net 33, thereby avoiding the phenomenon that the sand filter net 33 cannot be effectively cleaned by a conventional horizontal brush, and avoiding the problem that some fine sand and gravel block the sand filter net 33, resulting in the sand filter net 33 being unable to filter and being unable to filter effectively. The sand and gravel that have escaped from the gap of the sand filter net 33 will also be thrown around again with the swirling geothermal water, thereby preventing the sand and gravel from being stuck on the sand filter net 33 and affecting the filtering efficiency of the sand filter net 33, and avoiding the reduction of the filtering efficiency of the sand filter net 33 and affecting the flow rate of the geothermal water. The flow rate of the geothermal water can be increased by cleaning, and the excessive heat loss caused by too slow a flow rate can be avoided, so that the geothermal water mined from the underground can maintain a higher temperature when it arrives at the utilization site, thereby improving the energy utilization efficiency of the geothermal water.

[0028] The cleaning component drives the beating component to beat the sand filter screen 33: The upward and downward movement of the cleaning plate 52 can drive the fixing rod 71 to move up and down, wherein the fixing rod 71 will drive the lifting rod 72 to move upward when it moves upward, and the lifting rod 72 pushes the slapping plate 73 to rotate and lift upward by sliding inside the lifting groove 74. When the fixing rod 71 moves downward, the lifting rod 72 will squeeze the slapping plate 73 under the action of sliding inside the lifting groove 74 to swing it downward and reset. When the slapping plate 73 swings downward, it will slap the sand filter net 33. The slapping of the slapping plate 73 can loosen the sand and gravel between the sand filter net 33, thereby facilitating the pushing of the cleaning brush 53, avoiding the problem that the sand and gravel are blocked in the gap of the sand filter net 33 and cannot be cleaned, thereby improving the cleaning efficiency of the cleaning brush 53 for quick cleaning.

[0029] The collection component extracts the separated sand and gravel: Due to the cyclone effect of the cyclone desander 22 on the geothermal water, the geothermal water will form a cyclone inside the desander cylinder 21, and the geothermal water will rotate upward inside the desander cylinder 21. When the geothermal water rotates, it will push the guide plate 83, and the guide plate 83 will drive the collecting ring 82 to rotate inside the desander cylinder 21. The rotation of the guide plate 83 will push the sand and gravel that fall into the collecting ring 82, so that the sand and gravel can effectively enter the collecting box 84 through the sand discharge port 81 and the collecting port 85, so as to avoid the accumulation of sand and gravel inside the desander cylinder 21 and affect the subsequent separation of sand and gravel. In addition, the sand and gravel that fall into the collecting box 84 are extracted by an external sand pump, so that the sand and gravel are extracted into the external collecting box on the ground through the sand extraction pipe 86, thereby realizing the collection of sand and gravel.

[0030] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A geothermal heat preservation and fixed depth mining device, comprising a geothermal well pipe (1), characterized in that: The top of the inner surface of the geothermal well pipe (1) is fixedly connected to a wellhead hanger (11), the middle of the wellhead hanger (11) is fixedly connected to a top production pipe (12), a bottom production pipe (122) is arranged inside the geothermal well pipe (1), the outer surface of the production pipe (12) at one end inside the geothermal well pipe (1) is sheathed with an insulating pump pipe (13), the lower end of the top production pipe (12) is fixedly connected to a geothermal pump (14), the top and bottom of the geothermal pump (14) are respectively a water outlet and a water inlet, and the water outlet of the geothermal pump (14) is connected to the inside of the top production pipe (12), and the bottom water inlet of the geothermal pump (14) is fixedly connected to the water outlet of the geothermal pump (14). A suction tube (15) is connected, the outer surface of the suction tube (15) is evenly provided with through holes, the top of the suction tube (15) is connected to the water inlet of the geothermal pump (14), the bottom of the suction tube (15) is fixedly connected to a motor (16), the outer surface of the geothermal well pipe (1) is provided with a plurality of symmetrical geothermal water inlets (17), the inner surface of the geothermal well pipe (1) is fixedly connected to a packer (18) corresponding to the position of the geothermal water inlet (17), the end of the packer (18) facing the center of the geothermal well pipe (1) is connected to the bottom production pipe (122), and the end of the packer (18) away from the bottom production pipe (122) is connected to the geothermal water inlet (17); The outer surface of the top production pipe (12) is fixedly connected to a canning barrel (2), the top of the canning barrel (2) is connected to the top production pipe (12), the geothermal heat pump (14) is located inside the canning barrel (2), the bottom of the canning barrel (2) is fixedly connected to a desanding barrel (21), the bottom of the canning barrel (2) is connected to the desanding barrel (21), the bottom of the desanding barrel (21) is connected to the bottom production pipe (122), a cyclone desander (22) is arranged inside the desanding barrel (21), the bottom of the cyclone desander (22) is connected to the bottom production pipe (122), the top of the cyclone desander (22) is fixedly connected to a tube (23), the bottom of the tube (23) is fixedly connected to the bottom of the motor (16), and the output shaft of the motor (16) extends to the inside of the tube (23); A filter assembly is arranged inside the sand removal cylinder (21), the filter assembly comprising a fixing collar (31) fixedly connected to the inner surface of the sand removal cylinder (21) by means of bolts, a filter frame (32) is fixedly connected to the outer surface of the tube (23) by means of bolts, and a plurality of sand filter nets (33) are arranged on a fixing frame of the filter frame (32).

2. The geothermal heat preservation and fixed depth mining device according to claim 1 is characterized in that: The filter frame (32) is composed of an inner ring, a fixing frame and an outer ring in sequence, the outer ring of the filter frame (32) is clamped inside the fixing sleeve (31), and the upper surface of the sand filter screen (33) is flush with the upper surface of the fixing frame of the filter frame (32).

3. The geothermal heat preservation and fixed depth mining device according to claim 2 is characterized in that: The filter frame (32) is provided with a rotating assembly, the rotating assembly comprising a rotating groove (41) provided on the upper surface of the inner ring of the filter frame (32), a rotating ring (42) being slidably connected in the rotating groove (41), a circle of convex teeth being provided on the inner surface of the rotating ring (42), a first ball (43) being movably connected between the outer diameter surface of the rotating ring (42) and the groove wall of the rotating groove (41), two rotating plates (44) being symmetrically fixedly connected to the outer surface of the rotating ring (42), and the outer surface of the output shaft of the motor (16) A first magnetic disk (47) is fixedly connected to the surface of the filter frame (32); a plastic plate (48) corresponding to the position of the first magnetic disk (47) is arranged on the tube (23); a rotating shaft (49) is rotatably connected to the inner ring of the filter frame (32); a gear (410) corresponding to the position of the convex teeth of the rotating ring (42) is fixedly connected to the outer surface of the rotating shaft (49); the gear (410) meshes with the convex teeth of the rotating ring (42); and a second magnetic disk (411) corresponding to the position of the first magnetic disk (47) is fixedly connected to the outer surface of the rotating shaft (49).

4. The geothermal heat preservation and fixed depth mining device according to claim 3 is characterized in that: A stabilizing groove ring (45) is fixedly connected to the upper surface of the outer ring of the filter frame (32); rolling grooves are symmetrically formed on the groove wall of the stabilizing groove ring (45); one end of the rotating plate (44) away from the rotating ring (42) slides inside the stabilizing groove ring (45); one end of the rotating plate (44) located inside the stabilizing groove ring (45) is formed with a rotation groove; a second ball (46) is movably connected in the rotation groove of the rotating plate (44); the second ball (46) rolls in the rolling groove of the stabilizing groove ring (45); sealing rings (412) are fixedly connected to the two rotating plates (44); and the sealing rings (412) are in contact with the inner ring surface of the stabilizing groove ring (45).

5. The geothermal heat preservation and fixed depth mining device according to claim 4 is characterized in that: A cleaning assembly is provided on the rotating plate (44), the cleaning assembly comprising a spring (51) fixedly connected to the lower surface of the rotating plate (44), a cleaning plate (52) fixedly connected to the bottom of the spring (51), a cleaning brush (53) fixedly connected to the lower surface of the cleaning plate (52), a movable block (54) fixedly connected to the upper surface of the cleaning plate (52), and a fixing bar (55) fixedly connected to the top of the movable block (54).

6. The geothermal heat preservation and fixed depth mining device according to claim 5 is characterized in that: The cleaning brush (53) is a metal wire that can be elastically deformed, and the rotating plate (44) is provided with a strip-shaped hole for the movable block (54) to slide.

7. The geothermal heat preservation and fixed depth mining device according to claim 5, characterized in that: The fixing bar (55) is provided with a wave assembly, the wave assembly comprising a connecting shaft (61) fixedly connected to one end of the fixing bar (55) close to the stabilizing groove ring (45), a roller (62) rotatably connected to one end of the connecting shaft (61) away from the fixing bar (55), a corrugated ring (63) fixedly connected to the upper surface of the stabilizing groove ring (45), and the roller (62) abutting against the upper surface of the corrugated ring (63).

8. The geothermal heat preservation and fixed depth mining device according to claim 5, characterized in that: The rotating plate (44) is provided with a beating assembly, which includes two groups of fixed rods (71) fixedly connected to the left and right sides of the cleaning plate (52), each group of the fixed rods (71) is provided with two, and a lifting rod (72) is fixedly connected between the two fixed rods (71) in each group. The rotating plate (44) is hinged with a beating plate (73) on both sides, and a lifting groove (74) is provided in the middle of the beating plate (73), and the lifting rod (72) slides inside the lifting groove (74).

9. The geothermal heat preservation and fixed depth mining device according to claim 1, characterized in that: A collecting assembly is provided at the bottom of the sand removal cylinder (21), the collecting assembly comprising a sand discharge port (81) symmetrically opened at the bottom of the sand removal cylinder (21), a collecting ring (82) is slidably connected to the interior of the sand removal cylinder (21), a plurality of guide plates (83) are evenly fixedly connected to the interior of the collecting ring (82), a collecting box (84) is fixedly connected to the bottom of the sand removal cylinder (21), and a collecting port (85) corresponding to the position of the sand discharge port (81) is opened on the upper surface of the collecting box (84).

10. The geothermal heat preservation and fixed depth mining device according to claim 9, characterized in that: A sand extraction pipe (86) is fixedly connected to the outer surface of the collection box (84), the sand extraction pipe (86) extends to the top of the geothermal well pipe (1), and one end of the sand extraction pipe (86) located at the top of the geothermal well pipe (1) is connected to an external sand extraction pump.

Images