阅读说明：本技术 一种地浸采铀矿山高压注液的装置 (Device of uranium mine high pressure notes liquid is adopted in ground leaching ) 是由 赵明 原渊 张勇 闫纪帆 王德水 杨少武 贺刚 徐瑜 曹俊鹏 胡越凯 于 2020-05-06 设计创作，主要内容包括：一种地浸采铀矿山高压注液的装置,包括高压变频器、注液泵,高压变频器连接注液泵,注液泵通过管路连接U型注液支管左端,而U型注液支管右端连接注液支管接头,注液支管接头上有螺纹压盖,螺纹压盖下端连接压盖接头,压盖接头下端为井口管箍；井口管箍下端连接注液井口。(A device for high-pressure liquid injection of an underground leaching uranium mining mine comprises a high-voltage frequency converter and a liquid injection pump, wherein the high-voltage frequency converter is connected with the liquid injection pump, the liquid injection pump is connected with the left end of a U-shaped liquid injection branch pipe through a pipeline, the right end of the U-shaped liquid injection branch pipe is connected with a liquid injection branch pipe joint, a threaded gland is arranged on the liquid injection branch pipe joint, the lower end of the threaded gland is connected with a gland joint, and the lower end of the gland joint is a wellhead pipe hoop; the lower end of the wellhead pipe hoop is connected with a liquid injection wellhead.)

1. The utility model provides a device of uranium mine high pressure liquid injection is adopted in ground leaching which characterized in that: the device comprises a high-voltage frequency converter (1) and a liquid injection pump (2), wherein the high-voltage frequency converter (1) is connected with the liquid injection pump (2), the liquid injection pump (2) is connected with the left end of a U-shaped liquid injection branch pipe (8) through a pipeline (7), the right end of the U-shaped liquid injection branch pipe (8) is connected with a liquid injection branch pipe joint (5), a threaded gland (6) is arranged on the liquid injection branch pipe joint (5), the lower end of the threaded gland (6) is connected with a gland joint (4), and the lower end of the gland joint (4) is a wellhead pipe hoop (3); the lower end of the wellhead pipe hoop (3) is connected with a liquid injection wellhead.

2. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: the wellhead pipe hoop (3), the gland joint (4), the liquid injection branch pipe joint (5) and the threaded gland (6) are all connected through threads in a fastening mode.

3. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: the high-pressure liquid injection pump (2) has two pumps in total, 10 KV.

4. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: the wellhead pipe hoop (3) is made of woolen cloth, and the outer diameter of the joint of the wellhead pipe hoop is 96.5mm consistent with the inner diameter of the wellhead pipe hoop (3).

5. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: the wellhead pipe hoop (3) is made of PVC material, and the outer diameter of the joint of the wellhead pipe hoop is 160mm consistent with the inner diameter of the wellhead pipe hoop (3).

6. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: annotate liquid branch pipe joint (5) and be the iron material, its lower extreme connector department is covered with the barb, and barb inclination is 8 degrees, and barb joint length 65 mm.

7. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: the liquid injection branch pipe joint (5) is made of iron materials, barbs are fully distributed at the lower end joint, the barb inclination is 15 degrees, and the barb joint is 108mm long.

8. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: the screw gland (6) is made of woolen cloth.

9. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: the screw gland (6) is made of PVC material.

10. The device for high-pressure liquid injection of the in-situ leaching uranium mining mine according to claim 1, characterized in that: the injection pressure is stabilized at 1.3MPA by adjusting the frequency of the high-voltage frequency converter (1).

Technical Field

The technology relates to a high-pressure liquid injection technology for in-situ leaching uranium mining mines, in particular to a method for realizing high-pressure liquid injection of in-situ leaching uranium mining mines.

Background

The in-situ leaching uranium mining technology is a new uranium mining technology integrating the functions of mining, selecting and smelting, and is widely applied to uranium mining at home and abroad at present. For an ore deposit with a low confined water head, the liquid injection well does not bear pressure, and the liquid injection is carried out in a gravity-flow mode, but for an ore deposit with a high confined water head, the liquid injection cannot be carried out by adopting a gravity-flow liquid injection method, a pressurized liquid injection method is required to be adopted under the condition, and the liquid injection wellhead device is required to bear certain pressure without crack and leakage of solution.

Most of the current liquid injection methods rely on a gravity-fed mode or only use a low-pressure low-power liquid injection pump to pump the leaching liquid in the liquid preparation pool to a well site liquid injection well. The existing liquid injection wellhead device mostly adopts a method of tightly pressing a liquid injection branch pipe wound with an adhesive tape in a fixed sleeve under the action of friction force to fix the liquid injection branch pipe, the friction force is reduced along with the aging of the adhesive tape and other reasons, so that the fixing is not firm, the device adopts a method of winding a raw material belt at a connecting part to seal, and the sealing is not tight along with the aging and the damage of the raw material belt.

Disclosure of Invention

The invention aims to: the method and the device for high-pressure liquid injection of the ground-leaching uranium mining mine are characterized in that a high-pressure frequency converter is adopted to drive a liquid injection pump to realize high-pressure liquid injection, and the high-pressure liquid injection device capable of bearing pressure is provided.

The technical scheme of the invention is as follows: a device for high-pressure liquid injection of an underground leaching uranium mining mine comprises a high-voltage frequency converter and a liquid injection pump, wherein the high-voltage frequency converter is connected with the liquid injection pump, the liquid injection pump is connected with the left end of a U-shaped liquid injection branch pipe through a pipeline, the right end of the U-shaped liquid injection branch pipe is connected with a liquid injection branch pipe joint, a threaded gland is arranged on the liquid injection branch pipe joint, the lower end of the threaded gland is connected with a gland joint, and the lower end of the gland joint is a wellhead pipe hoop; the lower end of the wellhead pipe hoop is connected with a liquid injection wellhead.

The wellhead pipe hoop, the gland joint, the liquid injection branch pipe joint and the threaded gland are all connected through threads in a fastening mode.

The high-pressure liquid injection pumps are totally two, 10 KV.

The wellhead pipe hoop is made of wool, and the outer diameter of the joint of the wellhead pipe hoop is 96.5mm consistent with the inner diameter of the wellhead pipe hoop.

The wellhead pipe hoop is made of PVC material, and the outer diameter of the connector of the wellhead pipe hoop is 160mm consistent with the inner diameter of the wellhead pipe hoop.

Annotate liquid branch pipe joint and be the iron material, its lower extreme connector department is covered with the barb, barb inclination 8 degrees, and barb joint length 65 mm.

Annotate liquid branch pipe joint and be the iron material, its lower extreme connector department is covered with the barb, barb inclination 15 degrees, barb joint length 108 mm.

The screw gland is made of woolen cloth.

The screw gland is made of PVC material.

The injection pressure is stabilized at 1.3MPA by adjusting the frequency of the high-voltage frequency converter. .

The invention has the following remarkable effects: the method and the device for high-pressure liquid injection of the in-situ leaching uranium mining mine solve the problem that liquid injection cannot be realized by a gravity-flowing liquid injection method in an ore bed with a high confined water head. The invention realizes high-pressure liquid injection by adopting a mode that a 10KV high-voltage frequency converter drags a liquid injection pump, and pumps the leaching solution in the liquid distribution pool to a well site under pressure.

The liquid injection branch pipe is fixed on the fixing device by adopting a method of pressing to increase friction force, and the friction force is reduced due to the action of external force, so that the liquid injection branch pipe is not firmly fixed. The invention also solves the problem of poor sealing caused by the traditional sealing method of winding the raw material belt at the connecting part, the bracket is designed at the connecting part and the leather pad is arranged in the bracket, the sealing is realized by tightly pressing the leather pad in the bracket through screw fastening, and the sealing is tight, thereby preventing the leakage of the well head solution.

Drawings

FIG. 1 is a schematic diagram of a high-pressure liquid injection device for in-situ leaching uranium mining;

FIG. 2 is a schematic view of a liquid injection branch pipe joint of a device for high-pressure liquid injection of an in-situ leaching uranium mining mine;

in the figure: 1 high-voltage inverter, 2 infusion pumps, 3 well head pipe hoops, 4 gland joints, 5 liquid injection branch pipe joints, 6 thread gland, 7 pipelines and 8U-shaped liquid injection branch pipes

Detailed Description

The utility model provides a device of uranium mining mine high pressure notes liquid soaks, including high-voltage inverter 1, infusion pump 2, high-voltage inverter 1 connects infusion pump 2, infusion pump 2 passes through 7 connections U types of pipeline and annotates 8 left ends of liquid branch pipe, and 8 right-hand members of U type notes liquid branch pipe connect and annotate liquid branch pipe joint 5, it has screw gland 6 to annotate on the liquid branch pipe joint 5, gland joint 4 is connected to 6 lower extremes of screw gland, gland joint 4 lower extremes is well head ferrule 3, gland joint 4, annotate liquid branch pipe joint 5, screw gland 6 all passes through screw fastening connection. The lower end of the wellhead pipe hoop 3 is connected with a liquid injection wellhead;

example 1:

the high-pressure liquid injection pump 2 has two 10KV, and the liquid injection pressure is stabilized at 1.3MPA by adjusting the frequency of the high-pressure frequency converter 1

The wellhead pipe hoop 3 is made of wool, the inner diameter of the wellhead pipe is 96.5mm consistent with the outer diameter of the injection wellhead pipe, threads are arranged in the wellhead pipe, a support groove is arranged in the middle of the wellhead pipe, and a leather pad is arranged in the support groove.

Gland connects 4 for the woollen material, and its connects the external diameter and is unanimous for 96.5mm with 3 internal diameters of well head ferrule, and the shape is hollow like the button head bolt, and first internal diameter is greater than the latter half internal diameter, and reducing department forms holds in the palm the groove and installs the leather packing.

Annotate liquid branch pipe joint 5 and be the iron material, its lower extreme connector department is covered with the barb, barb inclination 8 degrees, and barb joint length 65mm will annotate liquid branch pipe well inner tube and lower clutch firmly fixed through the method that compresses tightly, and the top end joint is through bolted connection notes liquid branch pipe surface pipe.

The screw gland 6 is made of woolen cloth and is shaped like a round-head bolt, the interior of the screw gland is hollow, and the outer diameter of the screw is matched with the inner diameter of the upper half part of the gland joint 4 and is 70 mm.

In the leaching uranium mining of the inner Mongolia in a certain place, the underground water of an ore deposit belongs to a confined aquifer, the water level burial depth is 66m, the liquid injection well depth is 290m, and the outer diameter of a liquid injection well mouth pipe is 96.5 mm.

Example 2:

the injection pressure is stabilized at 1.5MPA by adjusting the frequency of the high-voltage frequency converter 1

The wellhead pipe hoop 3 is made of PVC material, the inner diameter of the wellhead pipe is 160mm consistent with the outer diameter of the liquid injection wellhead pipe, threads are arranged in the wellhead pipe, a bracket is arranged in the middle of the wellhead pipe, and a leather pad is arranged in the bracket.

Gland connects 4 and is the PVC material, and its connects the external diameter and is unanimous 160mm with 3 internal diameters of well head ferrule, appears like the button head bolt, and is interior hollow, and first internal diameter is greater than the latter half internal diameter, and reducing department forms and holds in the palm the groove and install the leather packing.

Annotate liquid branch pipe joint 5 and be the iron material, its lower extreme connector department is covered with the barb, barb inclination 15 degrees, and barb joint length 108mm will annotate liquid branch pipe well inner tube and lower clutch firmly fixed through the method that compresses tightly, and the top end joint is through bolted connection notes liquid branch pipe surface pipe.

The screw gland 6 is made of PVC material, is shaped like a round-head bolt, is hollow inside, and the outer diameter of the screw is matched with the inner diameter of the upper half part of the gland joint 4 and is 88 mm.