Wellhead connecting device for in-situ leaching uranium mining well washing
By designing a wellhead connection device for ground leaching uranium well washing, the problem of the decrease in the injection volume in ground leaching uranium production is solved, the safety and corrosion resistance of wellhead connections are achieved, and the stability of the well pipes and the adjustability of the water effluent are ensured.
Patent Information
- Application Number
- CN202422188085.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-06
AI Technical Summary
During the production process of ground leached uranium, the amount of liquid injection has a cliff-like decline, which is mainly caused by physical and chemical blockage, resulting in poor permeability of the ore layer and degradation of filter performance.
A wellhead connection device for ground leaching uranium well washing is designed, including central main pipe, nylon pipe, U-ring, fixed chain, water outlet pipe and other components. The material is corrosion-resistant UPVC and stainless steel. Through the combination of fixed chain and clamp, the safety of the pipe in the well is ensured, and the water outlet is adjusted through the valve.
This device improves the safety and corrosion resistance of wellhead connections, ensures the stability of the pipes in the well, can effectively adjust the water effluent, and solves the problem of decreased liquid injection.
Smart Images
Figure CN223034948U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to a connection device, in particular to a wellhead connection device used for in-situ leaching of uranium wells. Background Art
[0002] In situ uranium leaching is an important mining method. From theoretical research, field practice to large-scale application, in situ uranium leaching technology has developed relatively maturely in the mining of uranium deposits. In situ uranium leaching technology has made continuous breakthroughs and overcome various difficulties. The conditions for in situ uranium leaching have been continuously broadened. In situ uranium leaching technology has overcome the multiple constraints of poor mining geological conditions, deep ore body burial depth, low ore grade and poor mining economy that were initially believed to be the constraints, and has accumulated a lot of technical experience.
[0003] In the process of in-situ leaching uranium production, the problem of a cliff-like drop in the amount of pumped fluid is often encountered. The main reasons for this are mainly physical and chemical blockages, which will lead to poor permeability of the ore layer, poor filter performance, and a decrease in the amount of pumped fluid in the borehole. Therefore, the borehole is generally cleaned. Based on the above background, it is very necessary to develop a wellhead connection device that is corrosion-resistant, pressure-bearing, and has good sealing performance. Utility Model Content
[0004] Aiming at the defects of the prior art, the invention provides a wellhead connection device for in-situ leaching uranium well washing.
[0005] The invention is realized as follows: a wellhead connection device for washing wells for in-situ leaching uranium, which includes a central main pipe, the upper and lower ends of which are externally threaded, the lower end of which is fixedly connected to the wellhead, a nylon pipe is arranged on the central main pipe, U-shaped rings are arranged on the left and right sides of the central main pipe, a fixed chain passes through the U-shaped ring and is fixed to the upper end of the clamp, and two water outlet pipes are arranged on the central main pipe, and the two water outlet pipes are distributed up and down.
[0006] As described above, a wellhead connection device for in-situ leaching of uranium for well washing, wherein the upper and lower ends of the central main pipe are externally threaded, and the external thread at the lower end of the central main pipe is connected to the wellhead through a threaded connection.
[0007] As described above, a wellhead connection device for in-situ leaching of uranium wells is provided, wherein the central main pipe is connected to the nylon pipe via a nylon sleeve, and the nylon sleeve connects the upper end of the central main pipe to the nylon pipe via a threaded connection.
[0008] In the wellhead connection device for in-situ leaching of uranium and washing wells as described above, a clamp is provided at the upper end of the nylon tube for fixing the tube in the well.
[0009] In the wellhead connection device for in-situ leaching of uranium wells as described above, the central main pipe is welded to the U-shaped ring, and the U-shaped ring is symmetrically distributed at 180 degrees on both sides of the central main pipe.
[0010] A wellhead connection device for well washing in in-situ leaching uranium mining, as described above, wherein the distance between the two outlet pipes is 20 cm.
[0011] A wellhead connection device for well washing in in-situ leaching uranium mining, as described above, wherein one section of the lower outlet pipe and the flange joint of the ball valve are connected by bolts and screws, and the upper outlet pipe is connected to the drain pipe by threads. Gaskets are provided at all flange joint connections, and gaskets are also provided at the bolt and screw connections.
[0012] A wellhead connection device for well washing in in-situ leaching uranium mining, as described above, wherein the materials of the nylon sleeve and the nylon pipe are both UPVC, and the central main pipe, U-shaped ring, fixing chain, bolt, screw, ball valve, clamp, flange joint and gasket are all made of stainless steel.
[0013] The remarkable effects of this new type are: (1) By combining devices such as fixing chains and clamps, the pipes in the well are not easily pulled out of the well during well washing, making it safer. (2) The materials of this device are all UPVC and stainless steel, with high pressure resistance and corrosion resistance. (3) A valve is provided at the water outlet of this device, and the valve can be adjusted according to the water output. Description of the Drawings
[0014] Figure 1 It is a front elevation schematic diagram of the wellhead connection device of the present utility model.
[0015] In the figure: 1 - central main pipe, 2 - nylon sleeve, 3 - nylon pipe, 4 - U-shaped ring, 5 - fixing chain, 6 - bolt, 7 - screw, 8 - ball valve, 9 - outlet pipe, 10 - clamp, 11 - drain pipe, 12 - flange joint, 13 - gasket. Detailed Implementation Modes
[0016] A wellhead connection device for well washing in in-situ leaching uranium mining, comprising a central main pipe 1, a nylon sleeve 2, a nylon pipe 3, a U-shaped ring 4, a fixing chain 5, a bolt 6, a screw 7, a ball valve 8, an outlet pipe 9, a clamp 10, a drain pipe 11, a flange joint 12, and a gasket 13.
[0017] External threads are provided at both the upper and lower ends of the central main pipe 1. The external thread at the lower end of the central main pipe 1 is connected to the wellhead by a screw thread. The nylon sleeve 2 connects the nylon pipe 3 to the upper end of the central main pipe 1 by a screw thread connection. A clamp 10 is provided at the upper end of the nylon pipe 3 for fixing the pipe in the well. The two clamps 10 are fixedly connected by bolts 6 and screws 7.
[0018] U-shaped rings 4 are welded on both the left and right sides of the central main pipe 1. The U-shaped rings 4 are symmetrically distributed on both sides of the central main pipe 1 at 180 degrees. The fixing chain 5 passes through the U-shaped rings 4 and is fixed to the upper end of the clamp 10.
[0019] Two water outlet pipes 9 are welded on the right side of the central main pipe 1. The two water outlet pipes 9 are distributed vertically and are 20 cm apart from each other in the middle. One section of the lower water outlet pipe 9 is a flange joint 12, and the flange joint 12 of the ball valve 8 is connected by bolts 6 and screws 7. The upper water outlet pipe 9 is connected to the drain pipe 11 through threads. Gaskets 13 are provided at all the joints of the flange joints 12, and gaskets 13 are also provided at the joints of the bolts 6 and screws 7.
[0020] The materials of the nylon sleeve 2 and the nylon pipe 3 are both UPVC. The central main pipe 1, the U-shaped ring 4, the fixing chain 5, the bolts 6, the screws 7, the ball valve 8, the clamp 10, the flange joint 12 and the gasket 13 are all made of stainless steel.
[0021] The specific implementation of the utility model adopting the above technical scheme:
[0022] The lower end of the central main pipe 1 is fixed on the wellhead through a threaded screw. The nylon sleeve 2 connects the nylon pipe 3 by screwing the upper end of the central main pipe 1. The well inner pipe passes through the nylon pipe 3 and enters the well. The clamp 10 fixes the well inner pipe through the bolts 6 and screws 7 to prevent the well inner pipe from falling into the water. The outer diameter of the well inner pipe is the same as the inner diameter of the nylon pipe 3 to ensure airtightness. The fixing chain 5 passes through the U-shaped ring 4 and is fixed to the upper end of the clamp 10 to increase safety. One drain pipe 11 is directly connected to the upper water outlet pipe 9 through threads, and the other drain pipe 11 is connected to the ball valve 8 of the lower water outlet pipe 9 through threads. When washing the well, when the water output is small, the ball valve 8 is closed, and the sewage is discharged from the upper water outlet pipe 9. When the water volume is large, the ball valve 8 is opened, and the sewage is discharged from both the upper and lower water outlet pipes 9 simultaneously.
[0023] The above description is only an overview of the technical scheme of the utility model. In order to be able to understand the technical means of the utility model more clearly, it can be implemented according to the content of the specification. Any improvement based on the prior art on this basis belongs to the protection scope of this application.
Claims
1. A wellhead connection device for in-situ leaching of uranium wells, characterized in that: The invention comprises a central main pipe (1), the central main pipe (1) has external threads at both ends, the lower end of the central main pipe (1) is fixedly connected to a wellhead, a nylon pipe (3) is arranged on the central main pipe (1), U-shaped rings (4) are arranged on the left and right sides of the central main pipe (1), a fixing chain (5) passes through the U-shaped ring (4) and is fixed to the upper end of a clamp (10), and the central main pipe (1) is provided with two water outlet pipes (9), which are distributed up and down.
2. A wellhead connection device for in-situ leaching of uranium wells as claimed in claim 1, characterized in that: The lower end of the central main pipe (1) is externally threaded and connected to the wellhead via a threaded connection.
3. A wellhead connection device for in-situ leaching of uranium wells as claimed in claim 2, characterized in that: The central main pipe (1) is connected to the nylon pipe (3) through a nylon sleeve (2), and the nylon sleeve (2) connects the upper end of the central main pipe (1) to the nylon pipe (3) through a threaded connection.
4. A wellhead connection device for in-situ leaching of uranium wells as claimed in claim 3, characterized in that: The upper end of the nylon tube (3) is provided with a clamp (10) for fixing the tube in the well.
5. A wellhead connection device for in-situ leaching of uranium wells as claimed in claim 4, characterized in that: The central main pipe (1) is connected to the U-shaped ring (4) by welding, and the U-shaped ring (4) is symmetrically distributed at 180 degrees on both sides of the central main pipe (1).
6. A wellhead connection device for in-situ leaching of uranium wells as claimed in claim 5, characterized in that: The distance between the two water outlet pipes (9) is 20 cm.
7. A wellhead connection device for in-situ leaching of uranium wells as claimed in claim 6, characterized in that: The lower water outlet pipe (9) has two sections of flange joints (12) connected to the flange joint (12) of the ball valve (8) through bolts (6) and screws (7), and the upper water outlet pipe (9) is connected to the drain pipe (11) through threads. Gaskets (13) are provided at all the connection points of the flange joints (12), and gaskets (13) are also provided at the connection points of the bolts (6) and screws (7).
8. A wellhead connection device for in-situ leaching of uranium wells as claimed in claim 7, characterized in that: The nylon sleeve (2) and the nylon tube (3) are both made of UPVC, and the center main tube (1), the U-shaped ring (4), the fixing chain (5), the bolt (6), the screw (7), the ball valve (8), the clamp (10), the flange joint (12) and the gasket (13) are all made of stainless steel.