In-situ leaching uranium production well pumping and injection integrated device, system and use method of system

Abstract

The application discloses a kind of in-situ leaching uranium production well pumping and injection integrated device, system and the use method of system, wherein pumping and injection integrated device includes tube body, piston assembly and elastic piece.Hole is opened on the lateral wall of tube body, and the inner surface of tube body is provided with positioning structure.Piston assembly is slidably arranged in tube body, and piston assembly can be positioned by abutting against positioning structure when sliding upward, and piston assembly blocks hole when abutting against positioning structure.Piston assembly is one-way valve, and only opens when fluid in tube body flows upward.Elastic piece is connected with tube body and piston assembly respectively, to provide elastic thrust to push piston assembly to positioning structure.Compared with prior art, the pumping and injection integrated device provided by the application can be used for liquid injection well and liquid pumping well, thereby avoiding replacing equipment in well, and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of in-situ leaching uranium mining technology, and in particular to an integrated pumping and injection device, system, and method of using the system for in-situ leaching uranium production wells. Background Technology

[0002] In uranium mining by in-situ leaching, leaching agents are typically injected into the ore layer through injection wells. The leaching agents react with the ore-bearing layer to form leaching solution, which is then pumped to the surface through pumping wells.

[0003] During in-situ leaching of uranium, the hydraulic connection between some pumping wells and injection wells is poor. The leaching agent injected into the injection well cannot reach the pumping well through the pores of the ore layer, resulting in poor leaching of the ore body around the injection well. In this case, it is necessary to change the layout of the production wells, adjust the injection wells to pumping wells and perform back-pumping to ensure the leaching effect of the ore layer.

[0004] In existing technologies, the injection equipment in injection wells only has the function of injection and not the function of extraction. Therefore, in the process of converting an injection well into an extraction well, it is necessary to replace the equipment inside the well, which is time-consuming and labor-intensive. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated injection and extraction device, system, and method of using the system for uranium production wells through in-situ leaching, which can be used for both injection wells and extraction wells to avoid the need to replace equipment inside the well.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention discloses an integrated pumping and injection device for uranium production wells obtained through in-situ leaching, comprising:

[0008] The tube body has a through hole on its side wall and a positioning structure on its inner surface.

[0009] A piston assembly is slidably disposed within the tube body. When the piston assembly slides upward, it can abut against the positioning structure for positioning. When the piston assembly abuts against the positioning structure, it blocks the through hole. The piston assembly is a one-way valve that only opens when the fluid in the tube body flows upward.

[0010] An elastic element, which is connected to the tube body and the piston assembly respectively, to provide an elastic thrust that pushes the piston assembly toward the positioning structure.

[0011] Preferably, the piston assembly includes a movable panel, a fixed valve plate, and a movable valve plate; the movable panel is slidably disposed within the tube body, and the movable panel is provided with a first flow hole; the fixed valve plate is located above the movable panel and is fixedly connected to the movable panel, and the movable valve plate is hinged to the fixed valve plate; when the movable valve plate rotates, it can rest on the fixed valve plate, so that the movable panel, the fixed valve plate, and the movable valve plate together form a cavity, and the first flow hole communicates with the cavity.

[0012] Preferably, a fixing member is fixed on the inner wall of the tube body, the fixing member is located below the movable panel, and a second flow hole is provided on the fixing member and / or between the fixing member and the tube body; the upper end of the elastic member abuts against the movable panel, and the lower end of the elastic member abuts against the fixing member.

[0013] Preferably, when the piston assembly abuts against the positioning structure, the fixed valve plate blocks the through hole.

[0014] Preferably, the fixed valve plate has a conical structure with the smaller diameter end facing upwards, the positioning structure has a conical surface for fitting the fixed valve plate, and the through hole is provided on the conical surface.

[0015] Preferably, the through holes include a plurality of holes, which are evenly distributed in the circumferential direction of the conical surface.

[0016] Preferably, the elastic element is a spring.

[0017] Preferably, the pipe body is provided with connecting flanges at both the upper and lower ends.

[0018] This invention also discloses an integrated pumping and injection system for uranium production wells produced by in-situ leaching, comprising the aforementioned integrated pumping and injection device for uranium production wells, and further comprising a submersible pump, a filter, a delivery pipe, a leaching agent control valve, and a leaching liquid control valve; the lower end of the pipe is connected to the submersible pump, and the filter is used to be fixed on the production well in an area corresponding to the ore layer; the delivery pipe is a tee pipe, comprising a vertical section, a first branch section, and a second branch section; the lower end of the vertical section is connected to the upper end of the pipe, the first branch section is used to connect to a leaching agent supply device, and the second branch section is used to connect to a leaching liquid collection device; the leaching agent control valve is installed on the first branch section, and the leaching liquid control valve is installed on the second branch section.

[0019] This invention also discloses a method for using an integrated extraction and injection system for uranium production wells obtained through in-situ leaching. The method includes the following steps:

[0020] S1. Open the leaching agent control valve and close the leaching liquid control valve;

[0021] S2. The leaching agent is sent into the production well through the delivery pipe;

[0022] S3. Open the leachate control valve and close the leachate control valve;

[0023] S4. Run the submersible pump to extract the leachate from the ore layer.

[0024] The present invention achieves the following technical effects compared to the prior art:

[0025] The integrated injection and extraction device for uranium production wells in in-situ leaching mining of the present invention can be used for both the injection of leaching agent into the production well and the pumping of leaching solution out of the production well. During the conversion of the injection well to the extraction well, it does not need to be replaced, thereby improving production efficiency. Clearly, the integrated injection and extraction system for uranium production wells in in-situ leaching mining of the present invention and its method of use also possess the above-mentioned advantages. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the integrated pumping and injection device for uranium production wells in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the integrated injection and extraction system for uranium production wells in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1-Leaching agent; 2-Leaching agent control valve; 3-Leaching solution; 4-Leaching solution control valve; 5-Transportation pipe; 6-Integrated pumping and injection device for uranium production wells in in-situ leaching mining; 7-Submersible pump; 8-Filter; 9-Ore layer; 10-Modible valve plate; 11-Fixed valve plate; 12-Modible panel; 13-Spring; 14-Leaching solution outlet; 15-Fixing component; 16-Upper solution chamber; 17-Lower solution chamber; 18-Leaching agent outlet; 19-Production well. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The purpose of this invention is to provide an integrated injection and extraction device, system, and method of using the system for uranium production wells through in-situ leaching, which can be used for both injection wells and extraction wells to avoid the need to replace equipment inside the well.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1 This embodiment provides an integrated pumping and injection device 6 for uranium production wells in in-situ leaching, which includes a pipe body, a piston assembly, and an elastic element.

[0034] The tube body has a through hole on its side wall that communicates with the inner cavity of the tube body, and a positioning structure is provided on the inner surface of the tube body. A piston assembly is slidably disposed within the tube body. When the piston assembly slides upward, it abuts against the positioning structure for positioning, and when the piston assembly abuts against the positioning structure, it blocks the through hole. The piston assembly is a one-way valve, opening only when the fluid within the tube body flows upward. Elastic elements connect the tube body and the piston assembly respectively, providing an elastic thrust to push the piston assembly towards the positioning structure. Inside the tube body, the area above the piston assembly is called the upper solution chamber 16, and the area below the piston assembly is called the lower solution chamber 17.

[0035] The working principle of the integrated injection and extraction device 6 for uranium production wells in this embodiment is as follows:

[0036] When leaching agent 1 is injected into the pipe, it flows downward within the pipe. Since the piston assembly is closed, it slides downward under the pressure of the fluid, thus removing the obstruction of the through-hole and increasing the deformation of the elastic element. Leaching agent 1 flows out of the pipe through the through-hole in the side wall and enters the ore layer 9, where it is dissolved in leachate 3 after a period of time.

[0037] When the leachate 3 is pumped outside the pipe body, the leachate 3 flows upward inside the pipe body. Under the action of the elastic element, the piston assembly abuts against the positioning structure, and the through hole on the side wall of the pipe body is blocked by the piston assembly. Since the piston assembly is in the open state, the leachate 3 passes upward through the piston assembly and continues to flow upward along the pipe body.

[0038] Therefore, the integrated injection and extraction device 6 for uranium production wells in this embodiment can be used both to inject the leaching agent 1 into the production well 19 and to pump the leaching liquid 3 out of the production well 19. During the process of converting the injection well into an extraction well, it does not need to be replaced, thereby improving production efficiency.

[0039] As a possible example, in this embodiment, the piston assembly includes a movable panel 12, a fixed valve plate 11, and a movable valve plate 10. The movable panel 12 is slidably disposed within the tube body and has a first flow hole. The fixed valve plate 11 is located above the movable panel 12 and is fixedly connected to the movable panel 12, while the movable valve plate 10 is hinged to the fixed valve plate 11. When rotated, the movable valve plate 10 can rest on the fixed valve plate 11, so that the movable panel 12, the fixed valve plate 11, and the movable valve plate 10 together form a cavity, and the first flow hole communicates with the cavity.

[0040] When the leachate 1 flows downward along the pipe, it presses the movable valve plate 10 against the fixed valve plate 11, preventing the leachate 1 from entering the cavity. When the leachate 3 flows upward along the pipe, the movable valve plate 10 separates from the fixed valve plate 11 under the push of the leachate 3, and the leachate 3 flows upward through the gap between the movable valve plate 10 and the fixed valve plate 11. Depending on the actual needs, those skilled in the art may also choose other types of one-way valves as piston assemblies.

[0041] As a possible example, in this embodiment, a fixing member 15 is fixed to the inner wall of the tube body. The fixing member 15 is located below the movable panel 12, and a second flow hole is provided on the fixing member 15 and / or between the fixing member 15 and the tube body. The upper end of the elastic member abuts against the movable panel 12, and the lower end of the elastic member abuts against the fixing member 15. Specifically, in this embodiment, the fixing member 15 is a fixed panel, but those skilled in the art can replace it with other types of fixing members 15, such as a fixing rod.

[0042] In this embodiment, multiple first and second flow holes are provided and evenly distributed along the circumference of the pipe body. The first and second flow holes can be collectively referred to as leachate outlet 14. Correspondingly, the through hole on the side wall of the pipe body can be referred to as leachate outlet 18.

[0043] As one possible example, in this embodiment, when the piston assembly abuts against the positioning structure, the fixed valve plate 11 blocks the through hole. Depending on the actual needs, those skilled in the art may also choose to have the movable panel 12 block the through hole when the piston assembly abuts against the positioning structure.

[0044] As a possible example, in this embodiment, the fixed valve plate 11 has a conical structure with the smaller diameter end facing upwards. The positioning structure has a conical surface for fitting the fixed valve plate 11 (the conical surface has the same taper as the outer surface of the fixed valve plate 11), and through holes are provided on the conical surface. Specifically, in this embodiment, there are multiple through holes, which are evenly distributed in the circumferential direction of the conical surface and are arranged radially along the tube body.

[0045] As one possible example, in this embodiment, the elastic element is a spring 13. Depending on the actual needs, those skilled in the art may also choose other types of elastic elements such as sheet springs.

[0046] As a possible example, in this embodiment, both the upper and lower ends of the pipe are provided with connecting flanges to facilitate the connection of other components.

[0047] Reference Figure 2 This embodiment also provides an integrated pumping and injection system for uranium production wells obtained through in-situ leaching, including the aforementioned integrated pumping and injection device 6, as well as a submersible pump 7, a filter 8, a delivery pipe 5, a leaching agent control valve 2, and a leaching fluid control valve 4. The lower end of the pipe is connected to the submersible pump 7, and the filter 8 is fixed on the production well 19 in the area corresponding to the ore layer 9. The delivery pipe 5 is a tee pipe, including a vertical section, a first branch section, and a second branch section. The lower end of the vertical section is connected to the upper end of the pipe, the first branch section is used to connect to the leaching agent supply device, and the second branch section is used to connect to the leaching fluid collection device. The leaching agent control valve 2 is installed on the first branch section, and the leaching fluid control valve 4 is installed on the second branch section.

[0048] When production well 19 is used as an injection well, the leaching agent control valve 2 is opened and the leaching liquid control valve 4 is closed. Leaching agent 1 enters the pipe body through the first branch section and the vertical section, then flows out of the pipe body through the through hole on the side wall of the pipe body, and finally enters the ore layer 9.

[0049] When production well 19 is operating as a pumping well, the leachate control valve 4 is open and the leachate control valve 2 is closed. Under the pumping of submersible pump 7, the leachate 3 in the ore layer 9 enters the production well 19 after being filtered by filter 8, and then flows out sequentially through submersible pump 7, pipe body, vertical section and second branch section.

[0050] This embodiment also provides a method for using an integrated extraction and injection system for uranium production wells obtained through in-situ leaching. The method of using the aforementioned integrated extraction and injection system for uranium production wells includes the following steps:

[0051] S1. Open the leachate control valve 2 and close the leachate control valve 4.

[0052] S2. The leaching agent 1 is sent into the production well 19 through the delivery pipe 5.

[0053] S3. Open the leachate control valve 4 and close the leachate control valve 2.

[0054] S4. Run submersible pump 7 to extract leachate 3 from mineral layer 9.

[0055] Clearly, this method utilizes an integrated injection and extraction system for uranium production wells obtained through in-situ leaching, and therefore possesses the corresponding advantages of such systems, which will not be elaborated upon here.

[0056] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An integrated pumping and injection device for uranium production wells obtained through in-situ leaching, characterized in that, include: The tube body has a through hole on its side wall and a positioning structure on its inner surface. A piston assembly is slidably disposed within the tube body. When the piston assembly slides upward, it can abut against the positioning structure for positioning. When the piston assembly abuts against the positioning structure, it blocks the through hole. The piston assembly is a one-way valve that only opens when the fluid in the tube body flows upward. An elastic element, which is connected to the tube body and the piston assembly respectively, to provide an elastic thrust that pushes the piston assembly toward the positioning structure; The piston assembly includes a movable panel, a fixed valve plate, and a movable valve plate; the movable panel is slidably disposed within the tube body, and the movable panel is provided with a first flow hole; the fixed valve plate is located above the movable panel and is fixedly connected to the movable panel, and the movable valve plate is hinged to the fixed valve plate; when rotating, the movable valve plate can rest on the fixed valve plate, so that the movable panel, the fixed valve plate, and the movable valve plate together form a cavity, and the first flow hole communicates with the cavity.

2. The integrated pumping and injection device for uranium production wells by in-situ leaching as described in claim 1, characterized in that, A fixing member is fixed on the inner wall of the tube body. The fixing member is located below the movable panel. A second flow hole is provided on the fixing member and / or between the fixing member and the tube body. The upper end of the elastic member abuts against the movable panel, and the lower end of the elastic member abuts against the fixing member.

3. The integrated pumping and injection device for uranium production wells by in-situ leaching as described in claim 1, characterized in that, When the piston assembly abuts against the positioning structure, the fixed valve plate blocks the through hole.

4. The integrated pumping and injection device for uranium production wells by in-situ leaching as described in claim 3, characterized in that, The fixed valve plate has a conical structure with the smaller diameter end facing upwards. The positioning structure has a conical surface for fitting the fixed valve plate, and the through hole is provided on the conical surface.

5. The integrated pumping and injection device for uranium production wells according to claim 4, characterized in that, The through holes include multiple through holes, which are evenly distributed in the circumferential direction of the conical surface.

6. The integrated pumping and injection device for uranium production wells by in-situ leaching as described in claim 1, characterized in that, The elastic element is a spring.

7. The integrated pumping and injection device for uranium production wells by in-situ leaching as described in claim 1, characterized in that, Both the upper and lower ends of the pipe are equipped with connecting flanges.

8. An integrated system for extraction and injection in uranium production wells through in-situ leaching, characterized in that, The device includes an integrated pumping and injection system for uranium production wells as described in any one of claims 1 to 7, further comprising a submersible pump, a filter, a delivery pipe, a leaching agent control valve, and a leaching liquid control valve; the lower end of the pipe is connected to the submersible pump, and the filter is fixed on the production well in an area corresponding to the ore layer; the delivery pipe is a tee pipe, including a vertical section, a first branch section, and a second branch section; the lower end of the vertical section is connected to the upper end of the pipe, the first branch section is used to connect to a leaching agent supply device, and the second branch section is used to connect to a leaching liquid collection device; the leaching agent control valve is installed on the first branch section, and the leaching liquid control valve is installed on the second branch section.

9. A method for using an integrated extraction and injection system for uranium production wells through in-situ leaching, characterized in that, The integrated injection and extraction system for uranium production wells as described in claim 8 includes the following steps: S1. Open the leaching agent control valve and close the leaching liquid control valve; S2. The leaching agent is sent into the production well through the delivery pipe; S3. Open the leachate control valve and close the leachate control valve; S4. Run the submersible pump to extract the leachate from the ore layer.

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