Anti-blocking geothermal tail water recharging device

Abstract

The invention provides an anti-blocking geothermal tail water recharge device. The anti-blocking geothermal tail water recharge device comprises a recharge pipeline, a recharge pump and a filter assembly. The recharge pipeline is connected to the recharge well; the recharge pump is connected to the recharge pipeline; the filtering assembly is connected to the recharge pump and comprises a filtering pipeline, a lifting part, a mounting part and a filtering part, and the filtering pipeline comprises a pipe wall, a hollow part defined by the pipe wall, a first opening located in the top face of the pipe wall and communicated with the hollow part and a second opening opposite to the first opening. The first opening and the second opening are strip-shaped and extend in the direction perpendicular to the length direction of the filtering pipeline, the mounting part is arranged at the first opening of the filtering pipeline, and the mounting part is sunken towards the hollow part to form a containing part; the filtering part is inserted into the hollow part through the second opening and comprises a filtering net and a guide rail frame, the guide rail frame is connected to the pipe walls on the two sides of the filtering pipeline, and the filtering net is slidably connected with the pipe walls through the guide rail frame; the lifting part is arranged in the containing part and comprises a driving part, a transmission part and a traction part, the traction part is connected with the driving part through the transmission part and comprises two traction belts, and the two traction belts extend out of the bottom of the mounting part and are detachably connected with the filter screen. According to the anti-blocking geothermal tail water recharging device provided by the embodiment of the invention, the technical problem that a filter screen of an existing geothermal tail water recharging device is inconvenient to replace is at least solved.

Description

Technical Field

[0001] The invention relates to the technical field of geothermal tail water reinjection, and in particular to an anti-clogging geothermal tail water reinjection device. Background Art

[0002] Geothermal energy is a non-polluting, renewable, clean energy with the advantages of large reserves, wide distribution, and high energy utilization rate. However, excessive exploitation or improper maintenance of geothermal resources will lead to resource depletion. To ensure the sustainable development of geothermal resources, the most effective technical measure is geothermal tail water reinjection. Geothermal tail water reinjection is a method of injecting the utilized geothermal water back into the heat reservoir section through geothermal reinjection wells. Geothermal tail water reinjection can not only solve the geothermal wastewater problem, but also improve or restore the heat production capacity of the geothermal reservoir.

[0003] The Chinese utility model patent with publication date of February 14, 2023 and publication number CN219091393U proposes an anti-clogging geothermal tailwater reinjection device, which includes a sedimentation tank, a filter pipe, a filter screen, a sealing plate and a fixing assembly. The anti-clogging geothermal tailwater reinjection device of the patent is installed by installing the filter screen on the installation frame, sliding the installation frame into the slot, and pressing the installation frame into the slot through the sealing plate.

[0004] Regarding the above-mentioned related technologies, they are suitable for filter pipes located relatively low from the ground. However, when the filter pipe is located relatively high from the ground, operators have to climb to a high place to replace the filter, which makes filter replacement inconvenient and poses a risk of accidents. Summary of the invention

[0005] The embodiment of the present application provides a blockage-resistant geothermal tail water reinjection device to at least solve the technical problem that the existing geothermal tail water reinjection device is inconvenient to replace the filter screen.

[0006] On the one hand, an embodiment of the present application provides an anti-clogging geothermal tailwater reinjection device, including a reinjection pipeline, a reinjection pump and a filter assembly. The reinjection pipeline is connected to the reinjection well; the reinjection pump is connected to the reinjection pipeline; the filter assembly is connected to the reinjection pump, and the filter assembly includes a filter pipe, a lifting part, a mounting part and a filter part, wherein the filter pipe includes a pipe wall, a hollow part formed by the pipe wall, a first opening located on the top surface of the pipe wall and connected to the hollow part, and a second opening opposite to the first opening, the first opening and the second opening are in the shape of long strips and both extend in a direction perpendicular to the length of the filter pipe, the mounting part is arranged at the first opening position of the filter pipe, the mounting part is in the shape of a plate, and the mounting part is recessed toward the hollow part. The filter unit is inserted into the hollow portion through the second opening, the filter unit comprises a filter screen and a guide rail frame, the guide rail frame is connected to the pipe walls on both sides of the filter pipe, and the filter screen is slidably connected to the pipe wall through the guide rail frame; the lifting unit is arranged in the housing portion, the lifting unit comprises a driving unit, a transmission unit and a traction unit, the traction unit is connected to the driving unit through the transmission unit, and the traction unit comprises two traction belts, the two traction belts extend from the bottom of the mounting portion and are detachably connected to the filter screen, so that the filter screen can rise or fall along the guide rail frame under the action of the traction belt.

[0007] According to some embodiments of the embodiments of the present application, the driving part includes a driving motor and a driving gear connected to the driving motor; the transmission part includes a connecting shaft, a transmission gear and two rollers, the connecting shaft extends along the length direction of the accommodating part and both ends are rotatably connected to the tube wall, the two rollers are respectively connected to both sides of the connecting shaft and are used to wind the two traction belts, the transmission gear is connected to the connecting shaft, and is meshed and transmitted with the driving gear.

[0008] According to some embodiments of the embodiments of the present application, the traction belt has a predetermined width, and the width of the roller matches the width of the traction belt.

[0009] According to some embodiments of the present application, the length of the traction belt is 3-5 times the height of the filter pipe.

[0010] According to some embodiments of the embodiments of the present application, protrusions are provided on both sides of the top of the filter net, and a hook is connected to the bottom end of the traction rope, and the hook can be connected to the protrusions to make the traction belt and the filter net detachably connected.

[0011] According to some embodiments of the embodiments of the present application, the cross-section of the mounting portion in the vertical direction is U-shaped, and both sides of the mounting portion are bent outward to form an extension portion, and the mounting portion is connected to the filter pipe through the extension portion.

[0012] According to some embodiments of the embodiments of the present application, a through hole is provided at the bottom of the mounting portion, and a positioning cap is connected inside the mounting portion, the positioning cap is arranged opposite to the through hole and extends in the vertical direction, and the positioning cap has a receiving groove connected to the through hole; a positioning rod is connected to the top of the filter screen, and the outer diameter of the top of the positioning rod is larger than the inner diameter of the receiving groove, and when the filter screen rises, the positioning rod can pass through the through hole and be inserted into the receiving groove of the positioning cap to limit the filter screen in the filter pipe.

[0013] According to some embodiments of the embodiments of the present application, the transmission gear is connected to the middle position of the connecting shaft.

[0014] According to some embodiments of the embodiments of the present application, an upper cover is connected to the top of the mounting portion, a lower cover is connected to the position of the second opening, and when the filter screen is embedded in the filter pipe, the lower cover abuts against the filter screen; sealing strips are provided between the upper cover and the mounting portion and between the lower cover and the filter screen pipe.

[0015] According to some embodiments of the embodiments of the present application, the filter net includes a fixed frame and a net portion, the fixed frame is arranged at the periphery of the net portion for supporting the net portion, the fixed frame has a predetermined thickness, and an annular sealing ring is arranged on the periphery of the top surface of the fixed frame, and when the filter net is embedded in the filter pipe, the sealing ring can be against the bottom surface of the mounting portion.

[0016] Compared with the prior art, the anti-clogging geothermal tail water reinjection device provided in the embodiment of the present application is capable of raising or lowering the filter screen along the guide rail frame under the action of the driving part and the traction belt, thereby enabling the filter screen to enter or exit from the hollow part of the filter pipe through the second opening at the bottom of the filter pipe, thereby facilitating the operator to remove the filter screen from the traction belt without having to climb to a high place to replace the filter screen, thereby reducing the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0018] Figure 1 A schematic diagram of the structure of a geothermal tailwater reinjection device that prevents clogging provided in an embodiment of the present application; Figure 2 A front view of a filter assembly in an anti-clogging geothermal tail water reinjection device provided in an embodiment of the present application; Figure 3 and Figure 4 They are all side views of the filter assembly in the anti-clogging geothermal tail water reinjection device provided in the embodiments of the present application; Figure 5 A schematic diagram of the structure of a filter screen in an anti-clogging geothermal tail water reinjection device provided in an embodiment of the present application; Figure 6 A schematic structural diagram of a sealing ring on a filter screen in an anti-clogging geothermal tail water reinjection device provided in an embodiment of the present application.

[0019] The components represented by the reference numerals are: 100 filter assembly, 10 filter pipe, 11 upper cover, 12 lower cover, 20 filter part, 21 filter net, 22 guide rail frame, 23 positioning cap, 24 positioning rod, 30 drive part, 31 drive motor, 32 driving gear, 40 transmission part, 41 connecting shaft, 42 transmission gear, 43 roller, 50 traction belt, 200 reinjection pump, 300 reinjection pipeline. DETAILED DESCRIPTION

[0020] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0021] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0023] In order to better understand this application, Figures 1 to 6 The embodiments of the present application are described.

[0024] Please also read Figures 1 to 5 , Figure 1 A schematic diagram of the structure of the anti-clogging geothermal tailwater reinjection device provided in an embodiment of the present application, Figure 2 This is a front view of a filter assembly in an anti-clogging geothermal tailwater reinjection device provided in an embodiment of the present application. Figure 3 and Figure 4 All of them are side views of the filter assembly in the anti-clogging geothermal tail water reinjection device provided in the embodiments of the present application, Figure 5 A schematic diagram of the structure of the filter screen in the anti-clogging geothermal tail water recharging device provided in the embodiment of the present application. The embodiment of the present application provides an anti-clogging geothermal tail water recharging device, including a recharging pipeline 300, a recharging pump 200 and a filter assembly 100. The recharging pipeline 300 is connected to the recharging well, the recharging pump 200 is connected to the recharging pipeline 300, and the filter assembly 100 is connected to the recharging pump. It should be noted that the geothermal tail water needs to enter the cyclone sand removal equipment before filtering to remove large particles of sand, rust and other impurities. In addition, after the geothermal tail water is filtered by the filter assembly 100, it is necessary to enter the degassing tank again to remove the air and bubbles in the geothermal tail water to prevent it from clogging the heat storage pipeline. In addition, the degassed geothermal tail water also needs to pass through the metal anti-scaling equipment to reduce the ions that are easy to scale. Finally, the treated geothermal tail water is recharged into the recharging well through the recharging pump 200.

[0025] The filter assembly 100 includes a filter pipe 10, a lifting portion, a mounting portion and a filter portion 20, wherein the filter pipe 10 includes a pipe wall, a hollow portion formed by the pipe wall, a first opening located on the top surface of the pipe wall and connected to the hollow portion, and a second opening opposite to the first opening. The filter pipe 10 is manufactured into a roughly square box shape and has a certain length. The filter pipe 10 is set at a certain height from the ground.

[0026] The first opening and the second opening are in the shape of long strips and both extend in a length direction perpendicular to the filter pipe 10. The first opening and the second opening are both arranged in a rectangular shape. The mounting portion is arranged at the first opening position of the filter pipe 10. The mounting portion is in a plate-like structure, and the mounting portion is recessed toward the hollow portion to form a receiving portion.

[0027] Optionally, the cross-section of the mounting portion in the vertical direction is U-shaped, and both sides of the mounting portion are bent outward to form an extension portion, and the mounting portion is connected to the filter pipe 10 through the extension portion so that the mounting portion can be more firmly connected to the filter pipe 10. Specifically, the extension portion and the filter pipe 10 can be fixed by welding.

[0028] The filter part 20 is inserted into the hollow part through the second opening. The filter part 20 includes a filter screen 21 and a guide rail frame 22 . The guide rail frame 22 is connected to the pipe walls on both sides of the filter pipe 10 . The filter screen 21 is slidably connected to the pipe wall through the guide rail frame 22 .

[0029] The lifting part is arranged in the accommodating part, and the lifting part includes a driving part 30, a transmission part 40 and a traction part. The traction part is connected to the driving part 30 through the transmission part 40, and the traction part includes two traction belts 50. The two traction belts 50 extend from the bottom of the mounting part and are detachably connected to the filter screen 21, so that the filter screen 21 can rise or fall along the guide rail frame 22 under the action of the traction belts 50.

[0030] In the geothermal tail water reinjection device provided in the embodiment of the present application, the filter screen 21 can rise or fall along the guide rail frame 22 under the action of the driving part 30 and the traction belt 50, so that the filter screen 21 can enter or exit from the hollow part of the filter pipe 10 through the second opening at the bottom of the filter pipe 10, thereby facilitating the operator to remove the filter screen 21 from the traction belt 50 without having to climb to a high place to replace the filter screen 21, thereby reducing the risk of accidents.

[0031] In some embodiments, the driving part 30 includes a driving motor 31 and a driving gear 32 connected to the driving motor 31; the transmission part 40 includes a connecting shaft 41, a transmission gear 42 and two rollers 43. The connecting shaft 41 extends along the length direction of the accommodating part and is rotatably connected to the tube wall at both ends. The two rollers 43 are respectively connected to both sides of the connecting shaft 41 and are used to wind two traction belts 50. The transmission gear 42 is connected to the connecting shaft 41 and meshes with the driving gear 32 for transmission connection. Thus, the power of the driving motor 31 is transmitted to the connecting shaft 41, and the rollers 43 at both ends of the connecting shaft 41 also rotate, and the traction belts 50 installed on the rollers 43 are wound or unwound to drive the filter 21 to rise or fall.

[0032] Optionally, the traction belt 50 has a predetermined width, and the width of the roller 43 matches the width of the traction belt 50. That is, the traction belt 50 has a constant width. It should be noted that when the traction belt 50 is wound around the roller 43, sometimes the linear belt cannot be evenly wound around the roller 43, so the lengths of the traction belts 50 on both sides are different, which makes the filter screen 21 prone to tilting to one side. Therefore, the traction belt 50 is set to have a constant width, so that the traction belt 50 can be wound at a constant rate when it is wound around the roller 43, thereby preventing the length of the traction belts 50 on both sides from changing.

[0033] Furthermore, the transmission gear 42 is connected to the middle position of the connecting shaft 41 so that the rollers 43 at both ends of the connecting shaft 41 can be wound at a constant rate to the maximum extent, thereby preventing the traction belt 50 from changing in length.

[0034] Optionally, the length of the traction belt 50 is 3-5 times the height of the filter pipe 10 , so that the traction belt 50 can bring the filter screen 21 down to a position close to the ground, thereby making it convenient for operators to replace the filter screen 21 .

[0035] In some embodiments, protrusions are provided on both sides of the top of the filter screen 21, and a hook is connected to the bottom end of the traction rope, and the hook can be connected to the protrusion so that the traction belt 50 and the filter screen 21 can be detachably connected.

[0036] Optionally, a through hole is provided at the bottom of the mounting portion, a positioning cap 23 is connected inside the mounting portion, the positioning cap 23 is arranged opposite to the through hole and extends in the vertical direction, and the positioning cap 23 has a receiving groove connected to the through hole. A positioning rod 24 is connected to the top of the filter screen 21, and the outer diameter of the top of the positioning rod 24 is larger than the inner diameter of the receiving groove. When the filter screen 21 rises, the positioning rod 24 can penetrate the through hole and be inserted into the receiving groove of the positioning cap 23 to limit the filter screen 21 in the filter pipe 10, thereby preventing the filter screen 21 from detaching from the filter pipe 10, and also increasing the stability of the filter screen 21 to prevent it from shaking or moving.

[0037] Specifically, the positioning cap 23 is made of an elastic material such as a resin material, and the positioning rod 24 includes a base, a middle part and a top part. The diameter of the middle part is larger than the diameter of the base so that the positioning rod 24 can be firmly connected to the positioning cap 23. The top part is sharp, and when the positioning rod 24 is connected to the positioning cap 23, it is convenient for the positioning rod 24 to be inserted into the positioning cap 23. A groove can be provided at the bottom of the filter screen 21, and the operator can use a pull rod to fit into the groove, pull the filter screen 21 out of the filter pipe 10, and pull the positioning rod 24 out of the positioning cap 23.

[0038] In some embodiments, the top of the mounting portion is connected to an upper cover 11, the position of the second opening is connected to a lower cover 12, and when the filter screen 21 is embedded in the filter pipe 10, the lower cover 12 abuts against the filter screen 21, so that the filter screen 21 can be firmly limited in the filter pipe 10 to prevent it from shaking or moving when in working state. In addition, sealing strips are provided between the upper cover 11 and the mounting portion and between the lower cover 12 and the filter screen 21 pipe to prevent leakage of geothermal tail water. In addition, one side of the lower cover 12 can be hingedly connected to the filter pipe 10, and the other side can be snap-connected to the filter pipe 10 to facilitate its opening.

[0039] See also Figure 6 , Figure 6A schematic diagram of the structure of the sealing ring on the filter screen in the anti-clogging geothermal tail water reinjection device provided in an embodiment of the present application. The filter screen 21 includes a fixed frame and a mesh portion. The fixed frame is arranged at the periphery of the mesh portion for supporting the mesh portion. The fixed frame has a predetermined thickness. An annular sealing ring is arranged on the periphery of the top surface of the fixed frame. When the filter screen 21 is embedded in the filter pipe 10, the sealing ring can be against the bottom surface of the mounting portion. By providing a sealing ring, the geothermal tail water in the filter pipe 10 can be prevented from entering the mounting portion. It should be noted that the electronic components such as the drive motor 31 in the present application need to be waterproofed to prevent damage caused by leakage of geothermal tail water.

[0040] In addition, the filter assembly 100 in the present application may include multiple, that is, a multi-stage filtration system is set on the filter pipe 10, and the filtration accuracy of the filter mesh 21 can be set to 10μm, 5μm and 1μm, etc., to remove suspended matter, microorganisms, bacteria, etc. in geothermal tail water.

[0041] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A geothermal tailwater reinjection device that prevents clogging, characterized in that: include: A reinjection pipeline connected to the reinjection well; A reinjection pump connected to the reinjection pipeline; A filter assembly connected to the recharging pump, the filter assembly comprising a filter pipe, a lifting part, a mounting part and a filter part, wherein the filter pipe comprises a pipe wall, a hollow part formed by the pipe wall, a first opening located on the top surface of the pipe wall and connected to the hollow part, and a second opening opposite to the first opening, the first opening and the second opening are in the shape of long strips and both extend in a direction perpendicular to the length of the filter pipe, the mounting part is arranged at the first opening position of the filter pipe, the mounting part is in a plate-like structure, and the mounting part is recessed toward the hollow part to form a receiving part; The filter part is inserted into the hollow part through the second opening, the filter part comprises a filter screen and a guide rail frame, the guide rail frame is connected to the pipe walls on both sides of the filter pipe, and the filter screen is slidably connected to the pipe wall through the guide rail frame; The lifting part is arranged in the accommodating part, and the lifting part includes a driving part, a transmission part and a traction part. The traction part is connected to the driving part through the transmission part. The traction part includes two traction belts, and the two traction belts extend from the bottom of the mounting part and are detachably connected to the filter net, so that the filter net can rise or fall along the guide rail frame under the action of the traction belts, thereby allowing the filter net to enter or exit the hollow part through the second opening.

2. The anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that: The driving part includes a driving motor and a driving gear connected to the driving motor; The transmission part includes a connecting shaft, a transmission gear and two rollers. The connecting shaft extends along the length direction of the accommodating part and has two ends rotatably connected to the tube wall. The two rollers are respectively connected to the two sides of the connecting shaft and are used to wind the two traction belts. The transmission gear is connected to the connecting shaft and is meshed with the driving gear for transmission connection.

3. The anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that: The traction belt has a predetermined width, and the width of the roller matches the width of the traction belt.

4. The anti-clogging geothermal tail water reinjection device according to claim 3 is characterized in that: The length of the traction belt is 3-5 times the height of the filtering pipe.

5. The anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that: The transmission gear is connected to the middle position of the connecting shaft.

6. The anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that: Protrusions are arranged on both sides of the top of the filter screen, and a hook is connected to the bottom end of the traction rope, and the hook can be connected to the protrusions so that the traction belt and the filter screen can be detachably connected.

7. The anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that: The cross section of the mounting portion in the vertical direction is U-shaped, and two sides of the mounting portion are bent outward to form an extension portion, and the mounting portion is connected to the filter pipe through the extension portion.

8. The anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that: A through hole is provided at the bottom of the mounting portion, and a positioning cap is connected inside the mounting portion. The positioning cap is arranged opposite to the through hole and extends in a vertical direction, and the positioning cap has a receiving groove connected to the through hole; a positioning rod is connected to the top of the filter screen, and the outer diameter of the top of the positioning rod is larger than the inner diameter of the receiving groove. When the filter screen rises, the positioning rod can pass through the through hole and be inserted into the receiving groove of the positioning cap to limit the filter screen in the filter pipe.

9. The anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that: An upper cover is connected to the top of the mounting portion, a lower cover is connected to the position of the second opening, and when the filter is embedded in the filter pipe, the lower cover abuts against the filter; sealing strips are provided between the upper cover and the mounting portion and between the lower cover and the filter pipe.

10. The anti-clogging geothermal tail water reinjection device according to claim 1, characterized in that: The filter screen includes a fixed frame and a screen portion, wherein the fixed frame is arranged at the periphery of the screen portion for supporting the screen portion, the fixed frame has a predetermined thickness, and an annular sealing ring is arranged at the periphery of the top surface of the fixed frame. When the filter screen is embedded in the filter pipe, the sealing ring can be against the bottom surface of the mounting portion.

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