An in-situ leaching uranium extraction injection well head device

Abstract

This utility model discloses a wellhead device for uranium extraction and injection in in-situ leaching, including a pipe clamp, an extraction and injection mechanism, a extraction sealing cap, and an injection sealing cap. The pipe clamp is fitted onto the wellhead, and the extraction and injection mechanism is connected to the pipe clamp and has an extraction hole and an injection hole. The extraction and injection mechanism has a through channel for the extraction pipe and the injection pipe, so that the extraction pipe and the injection pipe are lowered into the well simultaneously. The extraction sealing cap is set on the extraction hole to seal the extraction pipe, and the injection sealing cap is set on the injection hole to seal the injection pipe. This utility model fixes the wellhead with a pipe clamp, and the extraction and injection mechanism integrates the extraction hole and the injection hole, realizing the simultaneous lowering of the extraction pipe and the injection pipe to form an integrated extraction and injection structure. It can optimize the distribution of underground leaching solution in real time, reduce leaching dead zones, improve the uniformity of uranium leaching, and avoid local over-leaching or under-leaching by precisely controlling the leaching range, significantly improving the uranium element recovery rate. Switching between extraction / injection modes is simple and greatly shortens the adjustment time.

Description

Technical Field

[0001] This utility model relates to the field of in-situ leaching uranium mining technology, specifically to an in-situ leaching uranium injection wellhead device. Background Technology

[0002] CO2+O2 in-situ leaching uranium mines employ a centralized control room to control the injection of leaching solution. The leaching solution enters the control room through the injection main pipe and is then injected into individual injection wells through the injection branch pipe. After chemical reaction between the leaching solution and the formation, the uranium element is carried out from the pumping well through the leaching solution. It is necessary to maintain the balance between pumping and injection to sustain the circulation.

[0003] Existing pumping and injection wells can only maintain a single function. When the leaching rate in a region is too high or lower than expected, it is necessary to adjust the flow direction of the underground leaching solution to reduce leaching dead zones. Adjusting the flow direction of the leaching solution requires physical modifications, such as pulling out the well pipe and submersible pump. The functional adjustment of one unit takes more than a week, which seriously affects the work progress and cannot be adjusted quickly over a large area, making it difficult to eliminate leaching dead zones and resulting in low resource utilization. This utility model proposes a new solution to the above problems. Utility Model Content

[0004] To overcome at least one of the aforementioned drawbacks, this invention provides a wellhead device for uranium injection in in-situ leaching mining. The objective of this invention can be achieved by employing the following technical solution: This application provides a wellhead device for uranium extraction and injection in in-situ leaching, comprising: Pipe clamp, which is used to fit onto the wellhead; The pumping and injection mechanism is connected to the pipe clamp and has a pumping hole and an injection hole. The pumping and injection mechanism has a through channel for the pumping pipe and the injection pipe so that the pumping pipe and the injection pipe are lowered into the well simultaneously. A liquid extraction sealing cap is disposed on the liquid extraction hole for sealing the liquid extraction tube; The liquid injection sealing cap is disposed on the liquid injection hole and is used to seal the liquid injection tube.

[0005] In one possible implementation, the injection mechanism is threadedly connected to the pipe clamp, the injection mechanism is provided with threads, and the pipe clamp is provided with internal threads that are adapted to the threads.

[0006] In one possible implementation, the diameter of the through channel is greater than the sum of the diameters of the suction tube and the injection tube.

[0007] In one possible implementation, the through channel includes a liquid extraction channel and a liquid injection channel, wherein the liquid extraction channel is for the liquid extraction tube to pass through, and the liquid injection channel is for the liquid injection tube to pass through.

[0008] In one possible implementation, the liquid extraction sealing cap is threadedly connected to the liquid extraction mechanism, and the liquid injection sealing cap is threadedly connected to the liquid extraction mechanism.

[0009] In one possible implementation, the hose clamp is threaded to the wellhead, and the hose clamp is an iron structure.

[0010] In one possible implementation, the clamp is provided with a threading hole for the cable to pass through.

[0011] In one possible implementation, sealing rings are provided between the wellhead and the pipe clamp, between the pipe clamp and the injection mechanism, between the extraction hole and the extraction sealing cap, between the injection hole and the injection sealing cap, between the extraction sealing cap and the extraction pipe, between the injection sealing cap and the injection pipe, and between the threading hole and the cable.

[0012] In one possible implementation, a central control room valve is also included for switching between the pumping and injection actions.

[0013] In one possible implementation, the system further includes a wastewater recovery device, the input end of which is connected to the liquid extraction pipe, and the output end of which is connected to the liquid injection pipe. The wastewater recovery device is equipped with a filtration mechanism for filtering and recycling the wastewater.

[0014] The beneficial technical effects of this utility model are as follows: According to the present disclosure, the uranium extraction and injection wellhead device for in-situ leaching is fixed to the wellhead by a pipe clamp. The extraction and injection mechanism integrates the extraction hole and the injection hole, realizing the synchronous lowering of the extraction pipe and the injection pipe, realizing the integration of extraction and injection functions. It can optimize the distribution of underground leaching solution in real time, reduce leaching dead zones, improve the uniformity of uranium leaching, and control the leaching range more accurately, avoiding local over-leaching or under-leaching, thus improving the uranium element recovery rate. It eliminates the need for multiple operations, significantly simplifies the well pipe layout process, and only requires adjusting the valve in the central control room to switch the extraction / injection mode. There is no need to lift or lower the pump or disassemble the well pipe on site, which greatly reduces the adjustment time, reduces the frequency of on-site operations by workers, and reduces labor intensity. Attached Figure Description

[0015] The following are given by way of example and without limitation in the accompanying drawings: Figure 1 This diagram shows an overall structural schematic of an embodiment of the present invention from one angle. Figure 2 This diagram shows an overall structural schematic from another angle of an embodiment of the present invention; Figure 3 A perspective view of the overall structure of an embodiment of this utility model is shown; Figure 4A schematic diagram showing the overall structure of an embodiment of this utility model is provided.

[0016] In the diagram: 1. Pipe clamp; 2. Pumping mechanism; 3. Wellhead; 4. Threading hole; 5. Cable; 6. Pumping sealing cap; 7. Pumping pipe; 8. Injection sealing cap; 9. Injection pipe; 11. Internal thread; 21. Thread. Detailed Implementation

[0017] In the following detailed disclosure, these embodiments are fully described with reference to the accompanying drawings. In order to enable those skilled in the art to understand and clarify the technical solution of this utility model more clearly, the embodiments described below are not limited thereto. The present utility model will be further described in detail below with reference to the embodiments and the accompanying drawings.

[0018] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] This application provides a wellhead device for uranium extraction and injection in in-situ leaching, such as... Figures 1-4 The device includes a pipe clamp 1, an injection mechanism 2, a pumping sealing cap 6, and an injection sealing cap 8. The pipe clamp 1 is fitted onto the wellhead 3. The injection mechanism 2 is connected to the pipe clamp 1 and has a pumping hole and an injection hole. The injection mechanism 2 has a through channel for a pumping pipe 7 and an injection pipe 9 so that the pumping pipe 7 and the injection pipe 9 are lowered into the well simultaneously. The pumping sealing cap 6 is installed on the pumping hole to seal the pumping pipe 7. The injection sealing cap 8 is installed on the injection hole to seal the injection pipe 9.

[0021] The uranium extraction and injection wellhead device provided in this embodiment is securely connected to the wellhead 3 via a clamp 1. Combined with the integrated extraction and injection structure of the extraction and injection mechanism 2, it enables the synchronous lowering of the extraction pipe 7 and the injection pipe 9, forming a complete extraction and injection system. This system effectively regulates the flow path of the underground leaching solution, significantly improving the uranium leaching effect. By precisely controlling the distribution of the leaching area, it effectively eliminates leaching dead zones, preventing both excessive and insufficient leaching, thereby improving uranium extraction efficiency. Operationally, it adopts a centralized control mode, requiring only the adjustment of the central control valve to complete the extraction and injection function conversion. This eliminates the cumbersome procedures of pumping and pipe dismantling in traditional methods, simplifying the installation process of underground pipelines, significantly shortening operation time, and reducing the labor intensity of workers. In one possible implementation, such as Figure 4 As shown, the injection mechanism 2 is threadedly connected to the pipe clamp 1. The injection mechanism 2 is provided with a thread 21, and the pipe clamp 1 is provided with an internal thread 11 that is compatible with the thread 21.

[0022] Among them, the precise fit between the thread 21 and the internal thread 11 forms a mechanical lock, ensuring a stable connection between the injection mechanism 2 and the pipe clamp 1. The threaded connection method can achieve quick disassembly and assembly, which is convenient for on-site maintenance and functional adjustment. The threaded mating surface forms multiple sealing paths, which effectively prevents the leakage of the leaching liquid. The threaded engagement can effectively absorb the vibration load generated by downhole operations.

[0023] In one possible implementation, the diameter of the through channel is greater than the sum of the diameters of the suction tube 7 and the injection tube 9.

[0024] The channel space provides sufficient installation margin for the pumping pipe 7 and the injection pipe 9, facilitating quick on-site positioning and fixing. The gap between the channel and the pipe effectively avoids pipe wall friction and extends the service life of the downhole pipeline.

[0025] In one possible implementation, the through channel includes a liquid extraction channel and a liquid injection channel, wherein the liquid extraction channel is for the liquid extraction tube 7 to pass through and the liquid injection channel is for the liquid injection tube 9 to pass through.

[0026] The independent design of the extraction channel and the injection channel achieves physical isolation between the extraction pipe 7 and the injection pipe 9, avoiding the risk of pipe entanglement and ensuring independent operation of the extraction and injection functions. Each channel corresponds to a single pipe route, simplifying the positioning and fixing process of downhole pipes and significantly improving downhole operation efficiency. The appropriate gap between the inner wall of the channel and the pipe allows the pipe to naturally expand and contract while effectively controlling the swing amplitude and reducing friction loss.

[0027] In one possible implementation, the liquid extraction sealing cap 6 is threadedly connected to the liquid extraction mechanism 2, and the liquid injection sealing cap 8 is threadedly connected to the liquid extraction mechanism 2.

[0028] The threaded connection ensures a tight fit between the liquid extraction sealing cap 6 and the injection mechanism 2, guaranteeing a tight seal at the interface and facilitating quick disassembly and maintenance. The injection sealing cap 8 uses the same connection method, resulting in a unified overall structure and convenient operation. The threaded connection effectively resists vibration and pressure changes, improving system stability and reducing the risk of leakage due to loose connections, making it suitable for operating environments with frequent operations.

[0029] In one possible implementation, the pipe clamp 1 is threadedly connected to the wellhead 3, and the pipe clamp 1 is made of iron.

[0030] The iron pipe clamp 1 is tightly connected to the wellhead 3 via threads, ensuring the robustness of the interface and facilitating on-site installation and disassembly. The threaded design effectively resists pipeline vibration and pressure fluctuations, avoiding the risk of leakage due to loosening. The iron structure provides sufficient strength and corrosion resistance, adapting to the complex downhole environment and reducing maintenance costs.

[0031] In one possible implementation, such as Figures 1-4 As shown, the pipe clamp 1 is provided with a threading hole 4 for the cable 5 to pass through.

[0032] Among them, the cable hole 4 allows the cable 5 to pass through the iron pipe clamp 1 conveniently, avoiding the wear or tangling problems caused by the exposed cable 5. A horizontal cable passage can also be set on the pipe clamp 1, which not only ensures the smooth passage of the cable 5, but also does not weaken the overall strength of the pipe clamp 1, reducing the potential failure risk caused by the friction or compression of the cable 5.

[0033] In one possible implementation, sealing rings are provided between the wellhead 3 and the pipe clamp 1, between the pipe clamp 1 and the injection mechanism 2, between the extraction hole and the extraction sealing cover 6, between the injection hole and the injection sealing cover 8, between the extraction sealing cover 6 and the extraction pipe 7, between the injection sealing cover 8 and the injection pipe 9, and between the wire hole 4 and the cable 5.

[0034] Among them, the annular elastic structure of the sealing ring achieves precise matching of multiple interfaces, forming a pressure-adaptive seal at the metal contact surface between the wellhead 3 and the pipe clamp 1, which not only compensates for the dimensional changes caused by thermal expansion and contraction, but also prevents the intrusion of external dust and liquid; the multi-layer sealing ring design at the connection of the injection mechanism 2 can still maintain zero leakage of hydraulic medium under dynamic working conditions; the sealing ring at the cable hole 4 automatically rebounds and wraps around the cable body after the cable 5 is threaded through, which avoids the cable 5 swinging and wearing.

[0035] The sealing ring is made of oil-resistant rubber, which retains its elasticity even after long-term immersion in the medium or extreme temperatures, significantly improving the long-term sealing reliability of each connection part.

[0036] Understandably, the sealing ring forms an adaptive sealing interface during the injection / extraction process, effectively maintaining the pressure balance inside the well and preventing leakage of the leaching fluid or intrusion of external contaminants.

[0037] In one possible implementation, the in-situ leaching uranium extraction and injection wellhead device also includes a central control room valve for switching between pumping and injection operations.

[0038] Among them, the valves in the central control room can be hydraulically driven to quickly switch the injection mode, ensuring the isolation of the leaching solution delivery channel, avoiding the risk of misjudgment by manual operation, and significantly improving the automation level and safety of the in-situ leaching uranium mining process.

[0039] In one possible implementation, the in-situ leaching uranium injection wellhead device also includes a wastewater recovery device. The input end of the wastewater recovery device is connected to the extraction pipe 7, and the output end of the wastewater recovery device is connected to the injection pipe 9. The wastewater recovery device is equipped with a filtration mechanism for filtering and recycling the waste liquid.

[0040] The wastewater recovery device forms a closed loop with the pumping system through pipelines. Its built-in stepped filtration mechanism can separate solid particles and impurities in the waste liquid step by step, ensuring that the recycled leaching solution meets the requirements, realizing the resource utilization of waste liquid. It also avoids secondary pollution through fully enclosed transportation and reduces the consumption of leaching solution.

[0041] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0043] In view of the detailed description above, these and other changes can be made to these embodiments. This written description includes embodiments of the best mode disclosed in this utility model. The patent scope of this utility model is defined by the claims, which are not limited by this disclosure. The protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in this utility model, based on the technical solution and concept of this utility model, are within the protection scope of this utility model.

Claims

1. A wellhead device for uranium extraction and injection in in-situ leaching, characterized in that, include: Pipe clamp (1), the pipe clamp (1) is used to fit onto the wellhead (3); The pumping mechanism (2) is connected to the pipe clamp (1) and has a pumping hole and an injection hole. The pumping mechanism (2) has a through channel for the pumping pipe (7) and the injection pipe (9) so that the pumping pipe (7) and the injection pipe (9) are lowered into the well at the same time. A liquid extraction sealing cap (6) is provided on the liquid extraction hole for sealing the liquid extraction tube (7); The liquid injection sealing cap (8) is disposed on the liquid injection hole and is used to seal the liquid injection tube (9).

2. The in-situ leaching uranium extraction and injection wellhead device according to claim 1, characterized in that, The injection mechanism (2) is threadedly connected to the pipe clamp (1). The injection mechanism (2) is provided with a thread (21), and the pipe clamp (1) is provided with an internal thread (11) that is compatible with the thread (21).

3. The in-situ leaching uranium extraction and injection wellhead device according to claim 1, characterized in that, The diameter of the through channel is greater than the sum of the diameters of the suction tube (7) and the injection tube (9).

4. The in-situ leaching uranium extraction and injection wellhead device according to claim 1, characterized in that, The through channel includes a liquid extraction channel and a liquid injection channel. The liquid extraction channel is used for the liquid extraction tube (7) to pass through, and the liquid injection channel is used for the liquid injection tube (9) to pass through.

5. The in-situ leaching uranium extraction and injection wellhead device according to claim 1, characterized in that, The liquid extraction sealing cap (6) is threadedly connected to the liquid extraction mechanism (2), and the liquid injection sealing cap (8) is threadedly connected to the liquid extraction mechanism (2).

6. The in-situ leaching uranium extraction and injection wellhead device according to claim 1, characterized in that, The pipe clamp (1) is threaded to the wellhead (3), and the pipe clamp (1) is made of iron.

7. The in-situ leaching uranium extraction and injection wellhead device according to claim 1, characterized in that, The clamp (1) is provided with a threading hole (4) for the cable (5) to pass through.

8. The in-situ leaching uranium extraction and injection wellhead device according to claim 7, characterized in that, Sealing rings are provided between the wellhead (3) and the pipe clamp (1), between the pipe clamp (1) and the injection mechanism (2), between the extraction hole and the extraction sealing cap (6), between the injection hole and the injection sealing cap (8), between the extraction sealing cap (6) and the extraction pipe (7), between the injection sealing cap (8) and the injection pipe (9), and between the threading hole (4) and the cable (5).

9. The in-situ leaching uranium extraction and injection wellhead device according to claim 1, characterized in that, It also includes control room valves for switching between liquid pumping and liquid injection operations.

10. The in-situ leaching uranium extraction and injection wellhead device according to any one of claims 1-9, characterized in that, It also includes a wastewater recycling device, the input end of which is connected to the liquid extraction pipe (7), the output end of which is connected to the liquid injection pipe (9), and the wastewater recycling device is equipped with a filtration mechanism for filtering and recycling waste liquid.

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