CN218092989U

CN218092989U - Ground soaks uranium mining gas-compression acidification wellhead assembly

Info

Publication number: CN218092989U
Application number: CN202221023152.XU
Authority: CN
Inventors: 刘晓奎; 原渊; 张勇; 张万亮; 闫纪帆; 张渤; 董惠琦; 刘佳斌; 胡日乐
Original assignee: China Nuclear Tongliao Uranium Industry Co ltd
Current assignee: China Nuclear Tongliao Uranium Industry Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-12-20
Anticipated expiration: 2032-04-27

Abstract

A kind of ground soaks and adopts the uranium to pressurize the acid well head apparatus, including the central main pipe, the nylon pipe is connected to the upper end of the central main pipe, the left end of the central main pipe welds and annotates the liquid pipe one, the stop valve one connects between three-way junction piece and annotating the liquid pipe one, the flange joint of the front end of three-way junction piece connects and annotates the flange joint of the liquid pipe two, the water cut-off valve two connects three-way junction piece and drain pipe two; the flange joint of the central main pipe is connected with the flange joint of the interface main pipe through a screw and a bolt, and the lower end of the interface main pipe is connected with a well head; the right end of the central main pipe is welded with the first liquid outlet pipe, and the third stop valve is connected between the first liquid outlet pipe and the third liquid outlet pipe. The upper part of the central main pipe is an external thread port, and the nylon pipe is connected to the upper end of the central main pipe through a nylon shaft sleeve. There is the clamp nylon pipe upper end for fixed tightly seals nylon pipe, the well inner pipe of fixed well simultaneously. Handles are welded on the front and the back of the central line main pipe.

Description

Ground soaks uranium mining gas-compression acidification wellhead assembly

Technical Field

The invention relates to the technical field of in-situ leaching uranium mining processes, in particular to an in-situ leaching uranium mining gas-compressing acid-adding wellhead device.

Background

The in-situ leaching uranium mining process is characterized in that CO is injected into a liquid injection well under the condition that a uranium deposit is naturally buried ₂ And O ₂ The leaching agent reacts with minerals in an ore-containing aquifer, the leachate obtained by the reaction is lifted to the ground through a pumping well, and finally the leachate is conveyed to a treatment workshop for a series of process treatments, so that qualified products are obtained. However, after the process wells (injection wells and liquid extraction wells) are used for a period of time, the process wells are subjected to the situation that the holes of the ore bed are blocked due to various reasons, and the instantaneous flow rate of the process wells is finally reduced, so that the process wells need to be washed in various ways, the permeability of the ore bed is improved, and the purpose of increasing the flow rate is achieved.

CO ₂ +O ₂ In the in-situ leaching uranium mining process, chemical blockage is one of important reasons for blocking the pores of the ore bed. After the chemical agent is injected into the ore bed, some ions are dissolved out and hydrolyzed to generate precipitate, and single or insoluble substances are generated, most commonly CaCO ₃ 、CaSO ₃ 、Fe(OH) ₃ And FeCO ₃ . Hydrochloric acid becomes the best blocking remover, and the hydrochloric acid is injected into the ore by pressurizingAnd then unblocking the seam. In view of the above background, it is necessary to develop a wellhead assembly for pressurized well flushing in multiple ways with good sealing performance, acid corrosion resistance, and high pressure resistance. The method is a very promising technology and a technology which is not solved well all the time.

Disclosure of Invention

The invention aims to: the utility model provides a ground soaks uranium mining gas-compression acidification wellhead assembly, the wellhead assembly that has advantages such as the leakproofness is good, acid corrosion resistance and high pressure resistant.

The technical scheme of the invention is as follows: a kind of ground soaks and adopts the uranium to pressurize the acid well head apparatus, including the central main pipe, the nylon pipe is connected to the upper end of the central main pipe, the left end of the central main pipe welds and annotates the liquid pipe one, the stop valve one connects between three-way junction piece and annotating the liquid pipe one, the flange joint of the front end of three-way junction piece connects and annotates the flange joint of the liquid pipe two, the water cut-off valve two connects three-way junction piece and drain pipe two;

the flange joint of the central main pipe is connected with the flange joint of the interface main pipe through a screw and a bolt, and the lower end of the interface main pipe is connected with a well head;

the right end of the central main pipe is welded with the first liquid outlet pipe, and the third stop valve is connected between the first liquid outlet pipe and the third liquid outlet pipe.

The upper part of the central main pipe is an external thread port, and the nylon pipe is connected to the upper end of the central main pipe through a nylon shaft sleeve.

There is the clamp nylon tube upper end for fixed tightly seals nylon tube, the interior water pipe of fixed well simultaneously.

The front and the back of the central main pipe are welded with handles.

The two ends of the nylon shaft sleeve are both internally provided with threaded ports.

All flange joints are padded with metal gaskets.

The lower end of the interface main pipe is an external screwed joint which is connected with a wellhead (20) with an internal thread by screwing.

The central main pipe, the hoop, the handle, the flange joint, the first stop valve, the second stop valve, the third stop valve, the screw, the bolt, the gasket, the first liquid injection pipe, the second liquid injection pipe, the first liquid discharge pipe, the second liquid discharge pipe, the third liquid discharge pipe, the connector main pipe and the three-way connecting piece are all made of stainless steel.

The invention has the remarkable effects that: this device can pressurize well-flushing by multiple mode, mode one: before pressurized well washing, closing the first stop valve, opening the second stop valve and the third stop valve, connecting a main air pipe of an air compressor with the second injection pipe, connecting a water pipe in the well with the second liquid outlet pipe, injecting acid into the well bottom along the water pipe in the well by pressurizing the air compressor, returning the waste water generated by cleaning through the outside of the water pipe in the well, discharging the waste water through the third liquid outlet pipe, dissolving indissolvable mineral substances by injecting the acid, further removing the blockage of an ore bed, increasing the water flow, and simultaneously, being beneficial to washing well bottom sludge; the second method comprises the following steps: and closing the second stop valve and the third stop valve, opening the first stop valve, connecting the main air pipe of the air compressor with the second injection pipe, conveying gas to the bottom of the well from the outside of the water pipe in the well, and enabling waste water to flow out from the inside of the water pipe in the well, so that sludge and indissolvable mineral substances on the well wall can be washed more thoroughly and cleanly. Through the combination of the two modes, the well wall and the well bottom can be washed more thoroughly, so that the permeability of an ore bed is improved, and the aim of improving the flow is fulfilled.

Through the nylon pipe, nylon axle sleeve and clamp are fixed with the well water pipe in, and the well water pipe external diameter is slightly less than the internal diameter of nylon pipe, through some raw material areas of winding in the nylon pipe is inside, and then makes the device have better compactness.

The key stress part of the whole device is connected with the flange joint through the screw and the bolt, so that the whole device can bear higher gas pressure.

The center is responsible for, and the clamp, the handle, the flange joint, the screw rod, the bolt, the gasket, annotate liquid pipe one, annotate liquid pipe two, drain pipe one, drain pipe two, drain pipe three, the interface is responsible for, and tee junction spare etc. all adopt stainless steel material to make, makes the device have good acidproof performance.

To sum up, the utility model provides a well head connecting device that is used for ground to soak and adopts uranium to annotate pickling well. Compared with the traditional well mouth connecting device for well washing, the utility model has four outstanding advantages, one of which has two gas pressurization well washing modes, and the well washing can be more thorough by combining the two modes; the second step is as follows: the device basically adopts a flange interface and is connected with a screw rod by a bolt, so that the device can bear larger pressure; and thirdly: the device is made of stainless steel materials basically, so that the device has better acid resistance; and the fourth step: metal gaskets are padded between the flange joints, and raw plastic is wound on the threaded joints, so that the device has better tightness.

Drawings

FIG. 1 is a schematic elevation view of the wellhead:

FIG. 2 is a schematic elevation of the wellhead:

FIG. 3 is a top view of the wellhead.

In the figure: the center is responsible for (1), nylon tube (2), nylon axle sleeve (3), clamp (4), handle (5), flange joint (6), stop valve (7), stop valve two (8), stop valve three (9), screw rod (10), bolt (11), gasket (12), annotate liquid pipe one (13), annotate liquid pipe two (14), drain pipe one (15), drain pipe two (16), drain pipe three (17), the interface is responsible for (18), tee junction spare (19), well head (20), well water pipe (21).

Detailed Description

The utility model provides an earth soaks uranium mining calm anger and adds sour wellhead assembly, be responsible for 1 including the center, the center is responsible for 1 upper portion and is external screw thread port, connect nylon tube 2 in the center through nylon axle sleeve 3 and is responsible for 1 upper end at the center, there is clamp 4 nylon tube 2 upper end, be used for fixed nylon tube 2 that seals tightly, water pipe 21 in the fixed well simultaneously, prevent that water pipe 21 in the well from landing to the well, 3 both ends of nylon axle sleeve are built-in screw thread port, the center is responsible for 1 front and back all welding handle 5, control both ends and weld respectively annotate liquid pipe 13 and

drain pipe

15, 1 lower extreme welding flange joint 6 is responsible for in the center, be responsible for 1 flange joint 6 and the flange joint 6 of interface owner 18 with the center through screw rod 10 and bolt 11 and connect, the interface is responsible for 18 lower extremes and is screwed threaded joint, it is connected through screwing with the well head 20 of built-in external screw thread.

The left end of a central main pipe 1 is welded with a first liquid injection pipe 13, a first stop valve 7 is connected between a three-way connecting piece 19 and the first liquid injection pipe 13, a flange joint 6 at the front end of the three-way connecting piece 19 is connected with a flange joint of a second liquid injection pipe 14, the three-way connecting piece 19 is connected with a second liquid outlet pipe 16 through a second water cut-off valve 8, the right end of the central main pipe 1 is welded with a first liquid outlet pipe 15, a third stop valve 9 is connected between the first liquid outlet pipe 15 and a third liquid outlet pipe 17, ports among all elements are flange joints 6, the flange joints 6 of all the elements are connected and fixed through a screw 10 and a bolt 11, and metal gaskets 12 are filled among all the flange joints 6.

The center main pipe 1, the hoop 4, the handle 5, the flange joint 6, the first stop valve 7, the second stop valve 8, the third stop valve 9, the screw rod 10, the bolt 11, the gasket 12, the first liquid injection pipe 13, the second liquid injection pipe 14, the first liquid outlet pipe 15, the second liquid outlet pipe 16, the third liquid outlet pipe 17, the interface main pipe 18 and the three-way connecting piece 19 are all made of stainless steel.

Claims

1. The utility model provides an in situ leaching uranium mining pneumatics adds sour wellhead assembly which characterized in that: the nylon pipe (2) is connected to the upper end of the central main pipe (1), a first liquid injection pipe (13) is welded to the left end of the central main pipe (1), a first stop valve (7) is connected between a three-way connecting piece (19) and the first liquid injection pipe (13), a flange joint at the front end of the three-way connecting piece (19) is connected with a flange joint of a second liquid injection pipe (14), and the three-way connecting piece (19) is connected with a second liquid outlet pipe (16) through a second stop valve (8);

the flange joint of the central main pipe (1) is connected with the flange joint of the interface main pipe (18) through a screw (10) and a bolt (11), and the lower end of the interface main pipe (18) is connected with a well head (20);

the right end of the central main pipe (1) is welded with a first liquid outlet pipe (15), and a third stop valve (9) is connected between the first liquid outlet pipe (15) and a third liquid outlet pipe (17).

2. The in-situ leaching uranium mining gas-compression and acid-addition wellhead device according to claim 1, wherein: the upper part of the central main pipe (1) is an external thread port, and the nylon pipe (2) is connected to the upper end of the central main pipe (1) through a nylon shaft sleeve (3).

3. The in-situ leaching uranium mining gas-compression and acid-addition wellhead device according to claim 1, wherein: there is clamp (4) nylon pipe (2) upper end for fixed nylon pipe (2) that seals tightly, water pipe (21) in the fixed well simultaneously.

4. The in-situ leaching uranium mining gas and acid wellhead assembly according to claim 1, wherein: handles (5) are welded on the front and the rear of the central main pipe (1).

5. The in-situ leaching uranium mining gas and acid wellhead assembly according to claim 1, wherein: both ends of the nylon shaft sleeve (3) are provided with built-in thread ports.

6. The in-situ leaching uranium mining gas and acid wellhead assembly according to claim 1, wherein: all flange joints are padded with gaskets (12).

7. The in-situ leaching uranium mining gas-compression and acid-addition wellhead device according to claim 1, wherein: the lower end of the interface main pipe (18) is an external threaded connector which is connected with a wellhead (20) with an internal thread through screwing.

8. The in-situ leaching uranium mining gas-compression and acid-addition wellhead device according to claim 1, wherein: the center main pipe (1), the hoop (4), the handle (5), the flange joint (6), the first stop valve (7), the second stop valve (8), the third stop valve (9), the screw (10), the bolt (11), the gasket (12), the first liquid injection pipe (13), the second liquid injection pipe (14), the first liquid outlet pipe (15), the second liquid outlet pipe (16), the third liquid outlet pipe (17), the connector main pipe (18) and the three-way connecting piece (19) are all made of stainless steel.