CN116877408A - Hydraulic multistage piston liquid extraction experimental device and experimental method - Google Patents
Hydraulic multistage piston liquid extraction experimental device and experimental method Download PDFInfo
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- CN116877408A CN116877408A CN202310264209.8A CN202310264209A CN116877408A CN 116877408 A CN116877408 A CN 116877408A CN 202310264209 A CN202310264209 A CN 202310264209A CN 116877408 A CN116877408 A CN 116877408A
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- 239000007788 liquid Substances 0.000 title claims abstract description 170
- 238000000605 extraction Methods 0.000 title claims abstract description 71
- 238000002474 experimental method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 446
- 230000007246 mechanism Effects 0.000 claims abstract description 77
- 230000006854 communication Effects 0.000 claims abstract description 47
- 238000004891 communication Methods 0.000 claims abstract description 47
- 238000002386 leaching Methods 0.000 claims abstract description 39
- 229910052770 Uranium Inorganic materials 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims abstract description 30
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000011065 in-situ storage Methods 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 107
- 230000009471 action Effects 0.000 claims description 24
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 238000012795 verification Methods 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 claims description 5
- 230000007175 bidirectional communication Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 description 8
- 230000009189 diving Effects 0.000 description 5
- 210000000887 face Anatomy 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 210000002159 anterior chamber Anatomy 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
- 238000012418 validation experiment Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
Hydraulic multistage piston liquid extraction experimental device and experimental method relate to the field of machinery related to in-situ leaching uranium extraction. The hydraulic multistage piston liquid extracting experimental device comprises a liquid extracting mechanism and an experimental mechanism; the liquid lifting mechanism comprises a shell assembly; the shell assembly is sequentially provided with a drainage and oil section, a double-wall oil cylinder section, an upper two-way communication section, a repeating unit section, a lower double-wall water cylinder section and a lower two-way communication section from one end to the other end; the experimental mechanism comprises a water cylinder, a hydraulic station, a safety valve and a flow valve; the cylinder cover of the experiment mechanism is fixedly connected with the end face of the liquid extracting mechanism, which is close to one end of the drainage and oil path section, on the lower surface of the cylinder cover, so that the liquid extracting mechanism is suspended in the water cylinder. According to the invention, the water pressure of the in-situ uranium ore well under the depth of 250m is simulated through the safety valve, and the liquid extraction flow is counted through the flow valve, so that the principle feasibility and the liquid extraction effect of the liquid extraction mechanism are verified, and theoretical support and data support are provided for the on-site installation and use of the liquid extraction mechanism.
Description
Technical Field
The invention relates to the field of machinery related to on-site leaching uranium extraction, in particular to a hydraulic multistage piston liquid extraction experimental device and an experimental method.
Background
The basic principle of the method is that the ground leaching uranium mining technology is very advanced in the world, the ground leaching uranium ores are subjected to ground leaching in a certain network arrangement (comprising a liquid injection well and a liquid extraction well), ground leaching liquid is injected from the liquid injection well, the ground leaching liquid and the uranium ores are fully reacted to form uranium ion-containing solution, the uranium ion-containing solution permeates into the liquid extraction well through stratum, the uranium ion-containing solution is extracted to the ground surface through the liquid extraction well, and the uranium is further extracted in an ion exchange tower.
The pumping flow rate of the in-situ leaching uranium mine required by related uranium mining enterprises is 6-10m 3 And/h, if the liquid extraction speed is too low, the economic requirement of in-situ leaching uranium extraction cannot be met. The well depth of the in-situ uranium leaching mine can reach 200-500m, and the leaching liquid in the well is pumped by a deep well submersible pump at present, because the deep well submersible pump is used for pumpingA certain gap exists between the pump body and the vane of the vane pump), which causes unavoidable gap leakage (internal leakage) problems of the deep well submersible pump, and the gap leakage problems of the deep well submersible pump become more serious with the increase of the diving depth (lift), resulting in more serious flow loss.
In summary, the following problems to be solved exist in extracting leaching solution of an in-situ leaching uranium mine: 1. with the increase of the diving depth, the higher the number of deep well diving pump stages required to be configured for achieving the specified pumping flow, the corresponding increase of the purchase cost and the running power consumption is also achieved; 2. when the diving depth reaches 250m, the deep well diving pump is difficult to meet the requirement of the pumping flow of the in-situ leaching uranium mine due to the flow loss phenomenon.
The related units develop a liquid extraction mechanism suitable for a deep water section (a well section below 250 m) of an in-situ leaching uranium mine, and the liquid extraction mechanism is used for replacing a deep well submersible pump to carry out water pumping operation. After the structural design of the liquid extracting mechanism is finished, the feasibility of the liquid extracting mechanism in principle needs to be verified, and whether the liquid extracting effect can reach the expected or not needs to be verified, so that preparation is made for subsequent field assembly and use.
However, the relevant validation experiments are not suitable for on-site validation in an actual working scenario (in-situ uranium mine) for the following reasons: 1. the working depth of the liquid lifting mechanism is less than 250m in a well, a waterway pipeline, an oil circuit pipeline and a steel wire rope which are hundreds of meters long are required to be purchased, and a large winch, a trailer and other auxiliary equipment are also required to be purchased, so that the cost for verification experiments is extremely high; 2. because the environment of the actual working scene is complex, a plurality of uncontrollable factors exist, the experiment is carried out in the actual working scene, and risks are necessarily existed, if the steel cable is broken in the experiment process, the liquid extracting device is blocked in the in-situ uranium leaching mine, so that the in-situ uranium leaching mine is scrapped, and serious economic loss is caused; 3. if the experiment is carried out in an actual working scene, the vertical height of the liquid lifting mechanism required to be lowered and lifted reaches hundreds of meters, so that the experimental process is complex, low-efficiency and not visual enough.
Therefore, it is very necessary to design a corresponding experimental device and experimental method for the liquid extraction mechanism so as to simply, efficiently, intuitively and safely perform principle feasibility verification and liquid extraction effect verification.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a hydraulic multistage piston liquid extraction experimental device and an experimental method, which are used for verifying the principle feasibility and liquid extraction effect of a liquid extraction mechanism and provide necessary theoretical support and data support for the field (in-situ uranium ore leaching well) installation and use of the liquid extraction mechanism.
The technical scheme of the invention is as follows: the hydraulic multistage piston liquid extracting experimental device comprises a liquid extracting mechanism and an experimental mechanism;
the liquid lifting mechanism comprises a shell assembly, an oil cylinder, a push-pull rod A, a push-pull rod B, a piston A and a piston B;
the shell assembly is sequentially provided with a drainage and oil section, a double-wall oil cylinder section, an upper two-way communication section, a repeating unit section, a lower double-wall water cylinder section and a lower two-way communication section from one end to the other end; the drainage and oil path section is internally provided with an oil path channel and a collecting water outlet channel which are not communicated with each other, the collecting water outlet channel forms a collecting water outlet on the end face of the shell assembly, and the oil path channel forms an oil inlet and outlet on the end face of the shell assembly; the inside of the double-wall oil cylinder section is provided with an oil cylinder installation cavity and an annular water cavity A which are not communicated with each other; a water inlet channel A, a water outlet channel A and a movable guide channel A are arranged in the upper two-way communication section; the repeating unit section comprises a middle double-wall water cylinder section and a middle two-way communication section which are connected with each other; a middle piston cavity and an annular water cavity B which are not communicated with each other are arranged in the middle double-wall water cylinder section; a water inlet channel B, a water discharge channel B and a movable guide channel B are arranged in the middle two-way communication section; a lower piston cavity and an annular water cavity C which are not communicated with each other are arranged in the lower double-wall water cylinder section; a water inlet channel C and a water discharge channel C which are not communicated with each other are arranged in the lower two-way communication section;
The cylinder body of the oil cylinder is fixedly arranged at the front end of the oil cylinder mounting cavity, the interior of the cylinder body of the oil cylinder is communicated with the rear end of the oil path channel, and a piston rod of the oil cylinder extends out of the rear end of the oil cylinder mounting cavity and is fixedly connected with the front end of the push-pull rod A; the push-pull rod A is hermetically and slidingly arranged in the movable guide channel A, and the front end and the rear end of the push-pull rod A respectively extend into the oil cylinder installation cavity and the middle piston cavity; the push-pull rod B is arranged in the movable guide channel B in a sealing sliding manner, and the front end and the rear end of the push-pull rod B extend into the middle piston cavity and the lower piston cavity respectively; the piston A is arranged in the middle piston cavity in a sealing sliding manner, and two ends of the piston A are respectively connected with the rear end of the push-pull rod A and the front end of the push-pull rod B; the piston B is hermetically and slidingly arranged in the lower piston cavity and is connected with the rear end of the push-pull rod B;
the experimental mechanism comprises a water cylinder, a hydraulic station, a safety valve and a flow valve; the water cylinder comprises a cylinder body and a cylinder cover detachably arranged at an opening at the upper end of the cylinder body, the lower surface of the cylinder cover faces the inside of the cylinder body, the upper surface of the cylinder cover faces the outside of the cylinder body, and an oil pipe penetrating orifice, a water return orifice and a water pipe penetrating orifice are arranged on the cylinder cover; the lower surface of a cylinder cover of the experiment mechanism is fixedly connected with the end surface of one end, close to the drainage and oil path section, of the liquid lifting mechanism, so that the liquid lifting mechanism is suspended in the water cylinder; when the liquid lifting mechanism is suspended in the water tank, the collecting water outlet of the liquid lifting mechanism penetrates through the water pipe penetrating opening on the tank cover and extends out of the water tank, and the oil inlet and outlet of the liquid lifting mechanism is opposite to the oil pipe penetrating opening on the tank cover; the hydraulic station is communicated with an oil inlet and an oil outlet of the liquid lifting mechanism through an oil way pipeline; the safety valve is connected to the collecting water outlet of the liquid extracting mechanism; the flow valve is connected to the return water ports of the safety valve and the cylinder cover through waterway pipelines at two ends respectively.
The invention further adopts the technical scheme that: the shell assembly is cylindrical;
in the drainage and oil section, the front ends of the oil path channel and the summarized water outlet channel are communicated to the end face of the shell assembly;
in the double-wall oil cylinder section, an annular water cavity A is arranged on the outer side of an oil cylinder mounting cavity in a surrounding mode, the front end of the annular water cavity A is communicated with the rear end of a summarized water outlet channel, and the front end of the oil cylinder mounting cavity is communicated with the rear end of an oil channel;
in the upper two-way communication section, the water inlet channel A, the water outlet channel A and the movable guide channel A are not communicated with each other; the front end of the water inlet channel A is communicated with the outer circular surface of the shell assembly to form a water inlet A, and a first one-way valve is arranged in the water inlet channel A; the front end of the drainage channel A is communicated with the rear end of the annular water cavity A, the rear end of the drainage channel A is provided with a first water inlet branch and a second water inlet branch, and a second one-way valve is arranged in the second water inlet branch; the front end of the moving guide channel A is communicated with the rear end of the oil cylinder mounting cavity;
in the middle double-wall water cylinder section, an annular water cavity B is arranged on the outer side of a middle piston cavity in a surrounding mode, the front end of the annular water cavity B is communicated with a first water inlet branch of a drainage channel A, and the front end of the middle piston cavity is respectively communicated with a second water inlet branch of the drainage channel A, the rear end of the water inlet channel A and the rear end of a movable guide channel A;
In the middle two-way communication section, the water inlet channel B, the water outlet channel B and the movable guide channel B are not communicated with each other; the middle part of the water inlet channel B is provided with a water inlet B communicated with the outer circular surface of the shell assembly, two ends of the water inlet channel B are respectively provided with a third one-way valve and a fourth one-way valve, and one end of the water inlet channel B provided with the third one-way valve is communicated with the rear end of the middle piston cavity; the front end of the drainage channel B is provided with a third water inlet branch and a converging channel section, a fifth one-way valve is arranged in the third water inlet branch, the third water inlet branch is communicated with the rear end of the middle piston cavity, the converging channel section of the drainage channel B is communicated with the rear end of the annular water cavity B, the rear end of the drainage channel B is provided with a fourth water inlet branch and a fifth water inlet branch, and a sixth one-way valve is arranged in the fourth water inlet branch; the front end of the movable guide channel B is communicated with the rear end of the middle piston cavity;
in the lower double-wall water cylinder section, an annular water cavity C is arranged on the outer side of a lower piston cavity in a surrounding mode, the front end of the annular water cavity C is communicated with a fifth water inlet branch of a water drainage channel B, and the front end of the lower piston cavity is respectively communicated with one end of the water inlet channel B, which is provided with a fourth one-way valve, a fourth water inlet branch of the water drainage channel B and the rear end of a movable guide channel B;
In the lower two-way communication section, a seventh one-way valve is arranged in the water inlet channel C, the front end of the water inlet channel C is communicated with the outer circular surface of the shell assembly to form a water inlet C, and the rear end of the water inlet channel C is communicated with the rear end of the lower piston cavity; an eighth one-way valve is arranged in the drainage channel C, the front end of the drainage channel C is communicated to the rear end of the lower piston cavity, and the rear end of the drainage channel C is communicated to the rear end of the annular water cavity C.
The invention further adopts the technical scheme that: the piston A divides the middle piston cavity into a middle front cavity relatively close to the front end of the middle piston cavity and a middle rear cavity relatively close to the rear end of the middle piston cavity; the piston A comprises a revolving body A, a revolving body B, a joint bearing A and a first wear-resistant ring; the rotary body A is in a sleeve shape with two open ends, a first sealing section, a first annular boss, a first external thread section and a second sealing section are sequentially arranged on the outer circular surface of the rotary body A from the front end to the rear end, a first mounting section, a first shaft end positioning section, a sealing plate connecting section and a second shaft end positioning section are sequentially arranged in the inner hole of the rotary body A from the front end to the rear end, a sealing plate is welded at the sealing plate section of the inner hole of the rotary body A, and the sealing plate separates the inner hole of the rotary body A into two sections of blind holes which are not communicated with each other; the revolving body B is in a sleeve shape with two open ends, a second installation section, a second annular boss and a third sealing section are sequentially arranged on the outer round surface of the revolving body B from the front end to the rear end, and a first internal thread section, a fourth sealing section and a third installation section are sequentially arranged in an inner hole of the revolving body B from the front end to the rear end; the rotary body A is in threaded connection with a first internal thread section of the rotary body B through a first external thread section, and a second sealing section on the outer circular surface of the rotary body A and a fourth sealing section in an inner hole of the rotary body B are opposite to each other and are sealed through an O-shaped sealing ring arranged between the second sealing section and the fourth sealing section; the two knuckle bearings A are respectively movably arranged in a first installation section of the revolving body A and a third installation section of the revolving body B, and are axially positioned at two ends; the first wear-resisting ring is arranged on the second installation section of the revolving body B, and two ends of the first wear-resisting ring are respectively propped against the first annular boss of the revolving body A and the second annular boss of the revolving body B to be axially positioned; the piston A is slidably arranged in the middle piston cavity through a first wear-resistant ring, the revolving body A faces to a middle front cavity at the front end of the middle piston cavity, and the revolving body B faces to a middle rear cavity at the rear end of the middle piston cavity; the Y-shaped sealing ring arranged on the first sealing section of the outer circular surface of the revolving body A and the Y-shaped sealing ring arranged on the third sealing section of the outer circular surface of the revolving body B jointly realize the sealing between the piston A and the middle piston cavity;
Correspondingly, the rear end of the push-pull rod A passes through a joint bearing A in an inner hole of the revolving body A and stretches into a first shaft end positioning section in the inner hole of the revolving body A, and then axial positioning is provided for the push-pull rod A through a gasket and a nut which are arranged at the rear end of the push-pull rod A;
correspondingly, the front end of the push-pull rod B penetrates through the joint bearing A in the inner hole of the revolving body B and stretches into the second shaft end positioning section in the inner hole of the revolving body A, and then the gasket and the nut arranged at the front end of the push-pull rod B provide axial positioning for the push-pull rod B.
The invention further adopts the technical scheme that: the piston B divides the lower piston cavity into a lower front cavity relatively close to the front end of the lower piston cavity and a lower rear cavity relatively close to the rear end of the lower piston cavity; the piston B comprises a revolving body C, a revolving body D, a joint bearing B and a second wear-resistant ring; the revolving body C is in a sleeve shape with two open ends, a fifth sealing section, a third annular boss, a second external thread section and a sixth sealing section are sequentially arranged on the outer circular surface of the revolving body C from the front end to the rear end, and a fourth mounting section and a third shaft end positioning section are sequentially arranged in the inner hole of the revolving body C from the front end to the rear end; the revolving body D is in a sleeve shape with one end open and the other end closed, a fifth installation section, a fourth annular boss and a seventh sealing section are sequentially arranged on the outer round surface of the revolving body D from the front end to the rear end, and a second internal thread section and an eighth sealing section are sequentially arranged in the inner hole of the revolving body D from the front end to the rear end; the revolving body C is in threaded connection with a second internal thread section of the revolving body D through a second external thread section, and a sixth sealing section on the outer circular surface of the revolving body C and an eighth sealing section in an inner hole of the revolving body D are opposite to each other and are sealed through an O-shaped sealing ring arranged between the sixth sealing section and the eighth sealing section; the knuckle bearing B is movably arranged in a fourth installation section of the revolving body C and is axially positioned at two ends; the second anti-abrasion ring is arranged on the fifth installation section of the revolving body D, and two ends of the second anti-abrasion ring are respectively propped against the third annular boss of the revolving body C and the fourth annular boss of the revolving body D to be axially positioned; the piston B is slidably arranged in the lower piston cavity through a second wear-resistant ring, the revolving body C faces to the lower front cavity at the front end of the lower piston cavity, and the revolving body D faces to the lower rear cavity at the rear end of the lower piston cavity; the Y-shaped sealing ring arranged on the fifth sealing section of the outer circular surface of the revolving body C and the Y-shaped sealing ring arranged on the seventh sealing section of the outer circular surface of the revolving body D jointly realize the sealing between the piston B and the lower piston cavity;
Correspondingly, the rear end of the push-pull rod B penetrates through the joint bearing B in the inner hole of the revolving body C and stretches into a third axial end positioning section in the inner hole of the revolving body C, and then axial positioning is provided for the push-pull rod B through a gasket and a nut which are arranged at the rear end of the push-pull rod B.
The invention further adopts the technical scheme that: the movable guide channels A in the upper two-way communication section are arranged in the middle, and the number of the water inlet channels A is identical to that of the water outlet channels A, and the number of the water inlet channels A is four; all the water inlet channels A and all the water outlet channels A are uniformly distributed in an annular shape around the movable guide channel A.
The invention further adopts the technical scheme that: the movable guide channels B in the middle two-way communication section are arranged in the middle, and the number of the water inlet channels B is identical to that of the water outlet channels B, and the number of the water inlet channels B is four; all the water inlet channels B and all the water discharge channels B are uniformly distributed in an annular shape around the movable guide channel B.
The invention further adopts the technical scheme that: the drainage and oil way section, the double-wall oil cylinder section, the upper two-way communication section, the repeating unit section, the lower double-wall oil cylinder section and the lower two-way communication section are all connected with each other through screw threads of a screwing sleeve; the middle double-wall water cylinder section and the middle bidirectional communication section contained in the repeating unit section are also connected through screw threads; the screwing sleeve comprises a semi-annular split A, a semi-annular split B and a locking screw, wherein a half external thread is respectively arranged on the outer walls of the semi-annular split A and the semi-annular split B, spanner positioning holes are respectively arranged on the semi-annular split A and the semi-annular split B, the semi-annular split A and the semi-annular split B surround and form a sleeve, the half external thread on the semi-annular split A and the half external thread on the semi-annular split B are spliced to form a complete external thread, and the semi-annular split A and the semi-annular split B are connected into a whole through the locking screw.
The invention further adopts the technical scheme that: the number of repeating unit segments is 1 segment.
The invention further adopts the technical scheme that: the pressure relief pressure of the safety valve is 3.0-4.0MPa.
The technical scheme of the invention is as follows: the hydraulic multistage piston liquid extraction experimental method is based on the hydraulic multistage piston liquid extraction experimental device, and the hydraulic multistage piston liquid extraction experimental device is used for verifying the principle feasibility and liquid extraction effect of the liquid extraction mechanism, so that theoretical support and data support are provided for the on-site installation and use of the liquid extraction mechanism;
the experimental method is as follows:
a certain amount of clear water is filled into the water tank, so that the water level is ensured to be at least 20cm higher than the water inlet A of the shell assembly; the piston rod of the driving oil cylinder stretches and contracts to enable the liquid extracting mechanism to continuously extract water in the water cylinder, the extracted water is discharged out of the liquid extracting mechanism through the collecting water outlet and then sequentially returns to the water cylinder through the safety valve, the flow valve and the water return port on the cylinder cover, so that the circulating flow of the water is realized;
in the process, the built-in water outlet pressure of the safety valve is 3.5MPa, the water pressure of the in-situ leaching uranium mine under the depth of 250m is simulated, and the flow valve is used for counting the water pumping flow; through verification, the liquid extraction mechanism can realize continuous liquid extraction and can meet the requirement of liquid extraction flow of leaching liquid of an in-situ leaching uranium mine;
In the process, when the piston rod of the oil cylinder stretches out, the following effects are generated simultaneously:
1. the piston A moves downwards to expand the volume of the middle front cavity to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel A through the water inlet A and then enters the middle front cavity through the first one-way valve to realize liquid suction;
2. the piston B moves downwards to expand the volume of the lower front cavity to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel B through the water inlet B and then enters the lower front cavity through the fourth one-way valve to realize liquid suction;
3. the piston A moves downwards to reduce the volume of the middle rear cavity to generate positive pressure, and under the action of the positive pressure, liquid in the middle rear cavity sequentially passes through a third water inlet branch with a fifth one-way valve, a water outlet channel B, a converging channel section, an annular water cavity B, a first water inlet branch, a water outlet channel A and an annular water cavity A, enters a summarized water outlet channel, and is finally conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge;
4. the piston B moves downwards to reduce the volume of the lower rear cavity to generate positive pressure, and under the action of the positive pressure, liquid in the lower rear cavity sequentially passes through a drainage channel C with an eighth one-way valve, an annular water cavity C, a fifth water inlet branch, a drainage channel B, a converging channel section, the annular water cavity B, a first water inlet branch, a drainage channel A and an annular water cavity A, enters a collecting water outlet channel, and is finally conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge;
When the piston rod of the oil cylinder is retracted, the following effects are simultaneously generated:
1. the piston A moves upwards to expand the volume of the middle rear cavity to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel B through the water inlet B and then enters the middle rear cavity through the third one-way valve to realize liquid suction;
2. the piston B moves upwards to expand the volume of the lower rear cavity to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel C through the water inlet C and then enters the lower rear cavity through the seventh one-way valve to realize liquid suction;
3. the piston A moves upwards to reduce the volume of the middle front cavity to generate positive pressure, and under the action of the positive pressure, liquid in the middle front cavity sequentially passes through a second water inlet branch with a second one-way valve, a water discharge channel A and an annular water cavity A, enters the summarized water discharge channel and is finally conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge;
4. the piston B moves upwards to reduce the volume of the lower front cavity to generate positive pressure, and under the action of the positive pressure, liquid in the lower front cavity sequentially passes through a fourth water inlet branch with a sixth one-way valve, a water outlet channel B, a converging channel section, an annular water cavity B, a first water inlet branch, a water outlet channel A and an annular water cavity A, enters the collecting water outlet channel and is finally conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge.
The invention has the following advantages:
the water pressure of the in-situ uranium ore well under the depth of 250m is simulated through the built-in water outlet pressure of the safety valve, and the liquid extraction flow is counted through the flow valve, so that the principle feasibility and the liquid extraction effect of the liquid extraction mechanism are verified, and necessary theoretical support and data support are provided for the on-site installation and use of the liquid extraction mechanism in the (in-situ uranium ore well).
The liquid lifting mechanism has the following advantages:
1. the liquid extraction mechanism is used for extracting leaching liquid under the deep water of the in-situ leaching uranium mine, and can meet the requirement of pumping liquid flow of 6-10m 3 Requirements of/h. When the water is lifted to depthWhen the depth is below 250m, compared with the traditional deepwater submersible pump, the deepwater submersible pump has the advantages of high pump flow, relatively low power consumption and relatively low cost.
2. Considering that the inside diameter of a ground-diameter uranium mine is narrow (the inside diameter of the well is smaller than 150 mm), when a waterway is designed, on one hand, space feasibility needs to be met as much as possible, and on the other hand, the cross-sectional area of water inlet and drainage needs to be enlarged as much as possible on the premise of meeting structural strength, so that an annular water cavity is designed in a section where an oil cylinder and a piston (comprising a piston A and a piston B) are arranged in a shell assembly for water drainage; the section of the water inlet (comprising a water inlet A, a water inlet B and a water inlet C) arranged outside the shell assembly is provided with a plurality of water inlet channels and water outlet channels which are annularly and uniformly distributed so as to supply water and discharge water. The waterway design is more fully utilized for the internal space of the shell assembly than the waterway design adopting a single water inlet and outlet channel, and can provide a relatively larger water inlet and outlet cross-sectional area.
3. The piston adopts a split threaded connection structure, so that the piston is convenient to install and assemble; two groups of Y-shaped sealing rings and one group of O-shaped sealing rings are arranged on the piston so as to fully meet the sealing requirement when the piston slides; the anti-abrasion ring is arranged in the middle of the piston, so that on one hand, the guiding effect of the piston in moving is achieved, on the other hand, the situation that the Y-shaped sealing ring is worn on one side to cause sealing failure is avoided, and on the other hand, the wearing probability of the piston body can be reduced, and a certain protection effect is achieved on the piston body.
4. When the number of the repeated unit sections is 1 section (as shown in the embodiment 1), the two-stage piston structure can meet the requirement of liquid pumping flow. When the number of the repeating unit sections is 2, the piston is of a three-stage piston structure, on one hand, the pressure in the annular water cavity is increased, the cavity walls at the two sides of the annular water cavity are required to be thickened correspondingly, the overall radial size of the shell assembly is increased correspondingly, so that the space feasibility requirement is difficult to meet, on the other hand, the sealing performance of the sealing element is also required to be higher, the grade and the cost of the sealing element are increased correspondingly, on the other hand, the force required by the oil cylinder during operation is also greater, the design of the wall of the oil path pipeline is thicker, and the overall radial size of the shell assembly is increased correspondingly, so that the space feasibility requirement is difficult to meet; in view of the above, it is most preferable that the number of repeating unit segments is 1 segment.
5. Because the application scene of the liquid extraction mechanism is an in-situ uranium ore well with the well depth of 200-300m, the shell assembly bears larger water pressure, and therefore channels cannot be designed to be too thin (namely, the channel wall thickness is required to be the lowest), channel patterns based on central symmetry arrangement are adopted in the upper two-way communication section and the middle two-way communication section, and the number of water inlet channels and water outlet channels is respectively set to be four; based on the arrangement mode, on one hand, the full utilization of the inner space of the upper two-way communication section and the middle two-way communication section is realized, and relatively larger water inlet cross-sectional area and water outlet cross-sectional area are provided in a limited design space so as to expire the water inlet and outlet amount (6-10 m 3 On the other hand, this channel pattern based on a central symmetrical arrangement helps to keep the center of gravity of the housing assembly centered and stable during water lifting operations, avoiding lateral (radial) tilting of the housing assembly during water lifting operations or standing.
The invention is further described below with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the upper end surface of the liquid extracting mechanism;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is an enlarged view of section I of FIG. 3;
FIG. 6 is an enlarged view of section II of FIG. 3;
FIG. 7 is an enlarged view of section III of FIG. 3;
FIG. 8 is an enlarged view of the fourth segment of FIG. 3;
FIG. 9 is an enlarged view of section I of FIG. 4;
FIG. 10 is an enlarged view of section II of FIG. 4;
FIG. 11 is an enlarged view of section III of FIG. 4;
FIG. 12 is an enlarged view of section IV of FIG. 4;
FIG. 13 is a cross-sectional view A-A of FIG. 6;
FIG. 14 is a B-B cross-sectional view of FIG. 7;
FIG. 15 is a cross-sectional view of C-C of FIG. 8;
FIG. 16 is a D-D sectional view of FIG. 10;
FIG. 17 is a schematic view of the structure of the piston A;
fig. 18 is a schematic structural view of the piston B;
fig. 19 is a schematic structural view of a rotor a in a piston a;
fig. 20 is a schematic structural view of a rotor B in a piston a;
fig. 21 is a schematic structural view of a revolving body C in a piston B;
fig. 22 is a schematic structural view of a rotor D in a piston B;
FIG. 23 is a radial cross-sectional view of the screw sleeve;
fig. 24 is an enlarged view of the portion E of fig. 1.
Legend description: a drainage and oil passage section 11; an oil passage 111; a summary water outlet channel 112; a summary water outlet 113; an oil inlet/outlet port 114; a double-walled cylinder segment 12; a cylinder mounting chamber 121; annular water chamber a122; an upper two-way communication section 13; a water inlet passage a131; a drainage channel a132; a first water inlet leg 1321; a second water inlet leg 1322; a first check valve 133; a second check valve 134; a middle double-walled vat segment 14; a central anterior chamber 1411; a central posterior cavity 1412; annular water chamber B142; a middle two-way communication section 15; a water inlet passage B151; a drain passage B152; a third water inlet branch 1521; junction channel segment 1522; a fourth water inlet branch 1523; a fifth water inlet branch 1524; a third check valve 153; a fourth one-way valve 154; a fifth check valve 155; a sixth one-way valve 156; a lower double-walled water cylinder section 16; a lower front cavity 1611; a lower rear cavity 1612; an annular water chamber C162; a lower two-way communication section 17; a water inlet channel C171; a drain passage C172; a seventh one-way valve 173; an eighth check valve 174; an oil cylinder 2; a push-pull rod A3; a push-pull rod B4; a pin coupling head 5; a piston A6; a revolving body a61; a first seal segment 611; a first annular boss 612; a first externally threaded section 613; a second seal segment 614; a first mounting section 615; a first shaft end locating section 616; a closing plate 617; a second axial end positioning segment 618; a revolving body B62; a second mounting section 621; a second annular boss 622; a third sealing section 623; a first internally threaded section 624; a fourth seal segment 625; a third mounting section 626; a knuckle bearing a63; a first wear ring 64; a piston B7; a revolving body C71; a fifth seal segment 711; a third annular boss 712; a second external thread section 713; a sixth seal segment 714; a fourth mounting section 715; a third axial end locating section 716; a revolving body D72; a fifth mounting section 721; a fourth annular boss 722; a seventh seal segment 723; a second internally threaded section 724; an eighth seal segment 725; a knuckle bearing B73; a second wear ring 74; screwing the sleeve 8; a semi-annular split a81; a semi-annular split B82; a locking screw 83; a cylinder 91; a cylinder head 92; an oil pipe penetrating orifice 921; a return port 922; the water pipe penetrating port 923; a safety valve 93; a flow valve 94; a water inlet A100; a water inlet B200; a water inlet C300; wrench positioning hole 400.
Description: since the length-diameter ratio of the liquid extraction mechanism is too large, the internal structure is difficult to see in fig. 3-4, the axial length of each component is shortened (the structure of each component is not changed) in drawing, and the liquid extraction mechanism is divided into four sections i, ii, iii and iv in the axial direction in fig. 3-4, and then the four sections are respectively drawn, so that the internal structure of the liquid extraction mechanism is clearly shown. Arrows in fig. 3-12 are the direction of waterway flow.
Description of the embodiments
Example 1:
as shown in fig. 1-24, the hydraulic multistage piston liquid extraction experimental device comprises a liquid extraction mechanism and an experimental mechanism.
The liquid lifting mechanism comprises a shell assembly, an oil cylinder 2, a push-pull rod A3, a push-pull rod B4, a connecting head 5, a piston A6 and a piston B7.
The whole shell assembly is cylindrical, and a drainage and oil section 11, a double-wall oil cylinder section 12, an upper two-way communication section 13, a repeating unit section, a lower double-wall water cylinder section 16 and a lower two-way communication section 17 are sequentially arranged from one end to the other end.
The drainage and oil path section 11 is internally provided with an oil path channel 111 and a collecting water outlet channel 112 which are not communicated with each other, the front ends of the oil path channel 111 and the collecting water outlet channel 112 are communicated to the end face of the shell assembly, the collecting water outlet channel 112 forms a collecting water outlet 113 on the end face of the shell assembly, and the oil path channel 111 forms an oil inlet and outlet 114 on the end face of the shell assembly.
The inside of the double-wall oil cylinder section 12 is provided with an oil cylinder installation cavity 121 and an annular water cavity A122 which are not communicated with each other, the annular water cavity A122 is arranged on the outer side of the oil cylinder installation cavity 121 in a surrounding mode, the front end of the annular water cavity A122 is communicated with the rear end of the summarized water outlet channel 112, and the front end of the oil cylinder installation cavity 121 is communicated with the rear end of the oil path channel 111.
The upper two-way communication section 13 is internally provided with a water inlet channel A131, a water outlet channel A132 and a movable guide channel A. The water inlet channel A131, the water outlet channel A132 and the movable guide channel A are not communicated with each other. The front end of the water inlet channel A131 is communicated with the outer circular surface of the shell assembly to form a water inlet A100, and a first one-way valve 133 is arranged in the water inlet channel A131. The front end of the water drainage channel A132 is communicated to the rear end of the annular water cavity A122, the rear end of the water drainage channel A132 is provided with a first water inlet branch 1321 and a second water inlet branch 1322, and the second water inlet branch 1322 is internally provided with a second one-way valve 134. The front end of the moving guide passage a communicates to the rear end of the cylinder mounting chamber 121.
The repeating unit section comprises a middle double-wall water cylinder section 14 and a middle two-way communication section 15 which are connected with each other. The middle double-wall water cylinder section 14 is internally provided with a middle piston cavity and an annular water cavity B142 which are not communicated with each other. The annular water cavity B142 is arranged on the outer side of the middle piston cavity in a surrounding mode, the front end of the annular water cavity B142 is communicated with the first water inlet branch 1321 of the drainage channel A132, and the front end of the middle piston cavity is respectively communicated with the second water inlet branch 1322 of the drainage channel A132, the rear end of the water inlet channel A131 and the rear end of the movable guide channel A. A water inlet channel B151, a water discharge channel B152 and a movable guide channel B are arranged in the middle two-way communication section 15. The water inlet channel B151, the water outlet channel B152 and the movable guide channel B are not communicated with each other. The middle part of the water inlet channel B151 is provided with a water inlet B200 communicated to the outer circular surface of the shell assembly, two ends of the water inlet channel B151 are respectively provided with a third one-way valve 153 and a fourth one-way valve 154, and one end of the water inlet channel B151 provided with the third one-way valve 153 is communicated to the rear end of the middle piston cavity. The front end of the drainage channel B152 is provided with a third water inlet branch 1521 and a converging channel section 1522, a fifth one-way valve 155 is arranged in the third water inlet branch 1521, the third water inlet branch 1521 is communicated with the rear end of the middle piston cavity, the converging channel section 1522 of the drainage channel B152 is communicated with the rear end of the annular water cavity B142, the rear end of the drainage channel B152 is provided with a fourth water inlet branch 1523 and a fifth water inlet branch 1524, and a sixth one-way valve 156 is arranged in the fourth water inlet branch 1523. The front end of the moving guide channel B is communicated with the rear end of the middle piston cavity.
The lower double-wall water cylinder section is internally provided with a lower piston cavity and an annular water cavity C162 which are not communicated with each other. The annular water cavity C162 is disposed around the outer side of the lower piston cavity, the front end of the annular water cavity C162 is communicated with the fifth water inlet branch 1524 of the water drainage channel B152, and the front end of the lower piston cavity is respectively communicated with one end of the water inlet channel B151 provided with the fourth check valve 154, the fourth water inlet branch 1523 of the water drainage channel B152 and the rear end of the moving guide channel B.
The inside of the lower two-way communication section is provided with a water inlet channel C171 and a water outlet channel C172 which are not communicated with each other, a seventh one-way valve 173 is arranged in the water inlet channel C171, the front end of the water inlet channel C171 is communicated to the outer circular surface of the shell assembly to form a water inlet C300, and the rear end of the water inlet channel C171 is communicated to the rear end of the lower piston cavity. An eighth check valve 174 is provided in the drain passage C172, and the front end of the drain passage C172 is connected to the rear end of the lower piston chamber, and the rear end of the drain passage C172 is connected to the rear end of the annular water chamber C162.
The cylinder body of the oil cylinder 2 is fixedly arranged at the front end of the oil cylinder mounting cavity 121, the interior of the cylinder body of the oil cylinder 2 is communicated with the rear end of the oil path channel 111, so that oil inlet and oil outlet path support is provided for the oil cylinder 2, and a piston rod of the oil cylinder 2 extends out towards the rear end of the oil cylinder mounting cavity 121 and is fixedly connected with the front end of the push-pull rod A3 (through the pin type connecting head 5).
The push-pull rod A3 is hermetically and slidingly arranged in the moving guide channel A, and the front end and the rear end of the push-pull rod A3 respectively extend into the oil cylinder mounting cavity 121 and the middle piston cavity.
The push-pull rod B4 is arranged in the moving guide channel B in a sealing sliding manner, and the front end and the rear end of the push-pull rod respectively extend into the middle piston cavity and the lower piston cavity.
The piston A6 is arranged in the middle piston cavity in a sealing sliding manner, and is respectively connected with the rear end of the push-pull rod A3 and the front end of the push-pull rod B4 at two ends, so that the middle piston cavity is divided into a middle front cavity 1411 relatively close to the front end of the middle piston cavity and a middle rear cavity 1412 relatively close to the rear end of the middle piston cavity, and synchronous movement of the push-pull rod A3 and the push-pull rod B4 is realized.
The piston B7 is sealingly slidably mounted in the lower piston chamber and is connected at one end to the rear end of the push-pull rod B4, which divides the lower piston chamber into a lower front chamber 1611 relatively close to the front end of the lower piston chamber and a lower rear chamber 1612 relatively close to the rear end of the lower piston chamber.
The experimental setup included a water cylinder, a hydraulic station (not shown), a relief valve 93 and a flow valve 94. The water vat includes cylinder body 91 and demountable installation at the cylinder cap 92 of cylinder body 91 upper end opening part, and cylinder cap 92 lower surface is inside towards cylinder body 91, and cylinder cap 92 upper surface is outside towards cylinder body 91, is equipped with oil pipe mouth 921, return water mouth 922 and water pipe mouth 923 on the cylinder cap 92. The cylinder cover 92 of the experiment mechanism is fixedly connected with the end face of the liquid lifting mechanism, which is close to one end of the water drainage and oil path section 11, on the lower surface, so that the liquid lifting mechanism is suspended in the water cylinder. When the liquid extraction mechanism is suspended in the water tank, the collecting water outlet 113 of the liquid extraction mechanism passes through the water pipe penetrating opening 923 on the cylinder cover 92 and extends out of the water tank, and the oil inlet and outlet 114 of the liquid extraction mechanism is opposite to the oil pipe penetrating opening 921 on the cylinder cover 92. The hydraulic station is communicated with an oil inlet and outlet 114 of the liquid lifting mechanism through an oil way pipeline. The safety valve 93 is connected to the collection water outlet 113 of the liquid extraction mechanism. The flow valve 94 is connected at both ends to the relief valve 93 and the return water port 922 of the cylinder head 92 through waterway pipes, respectively.
Preferably, piston A6 includes a rotor a61, a rotor B62, a knuckle bearing a63, and a first wear ring 64. The revolving body A61 is in a sleeve shape with two open ends, a first sealing section 611, a first annular boss 612, a first external thread section 613 and a second sealing section 614 are sequentially arranged on the outer circular surface of the revolving body A61 from the front end to the rear end, a first mounting section 615, a first shaft end positioning section 616, a sealing plate connecting section and a second shaft end positioning section 618 are sequentially arranged in the inner hole of the revolving body A61 from the front end to the rear end, a sealing plate 617 is welded at the sealing plate section of the inner hole, and the sealing plate 617 separates the inner hole of the revolving body A61 into two sections of blind holes which are not communicated with each other. The revolving body B62 is in a sleeve shape with two open ends, a second mounting section 621, a second annular boss 622 and a third sealing section 623 are sequentially arranged on the outer round surface of the revolving body from the front end to the rear end, and a first internal thread section 624, a fourth sealing section 625 and a third mounting section 626 are sequentially arranged on the inner hole of the revolving body from the front end to the rear end. The revolving body A61 is in threaded connection with the first internal thread section 624 of the revolving body B62 through the first external thread section 613, and the second sealing section 614 on the outer circular surface of the revolving body A61 and the fourth sealing section 625 in the inner hole of the revolving body B62 are opposite to each other and are sealed through an O-shaped sealing ring arranged between the second sealing section and the fourth sealing section. Two knuckle bearings a63 are movably mounted in the first mounting section 615 of the revolving body a61 and the third mounting section 626 of the revolving body B62, respectively, and are axially positioned at both ends. The first wear ring 64 is mounted on the second mounting section 621 of the rotor B62 with both ends thereof abutting the first annular boss 612 of the rotor a61 and the second annular boss 622 of the rotor B62, respectively, and being axially positioned. Piston A6 is slidably mounted in the central piston chamber by a first wear ring 64 with rotor a61 facing the central forward chamber 1411 at the forward end of the central piston chamber and rotor B62 facing the central aft chamber 1412 at the aft end of the central piston chamber. The Y-shaped sealing ring arranged on the first sealing section 611 of the outer circular surface of the revolving body A61 and the Y-shaped sealing ring arranged on the third sealing section 623 of the outer circular surface of the revolving body B62 jointly realize the sealing between the piston A6 and the middle piston cavity. Correspondingly, the rear end of the push-pull rod A3 passes through the knuckle bearing A63 in the inner hole of the revolving body A61 and extends into the first shaft end positioning section 616 in the inner hole of the revolving body A61, and then axial positioning is provided for the push-pull rod A3 through a gasket and a nut arranged at the rear end of the push-pull rod A3. Correspondingly, the front end of the push-pull rod B4 passes through the knuckle bearing A63 in the inner hole of the revolving body B62 and stretches into the second axial end positioning section 618 in the inner hole of the revolving body A61, and then axial positioning is provided for the push-pull rod B4 through a gasket and a nut arranged at the front end of the push-pull rod B4.
Preferably, piston B7 includes a rotor C71, a rotor D72, a knuckle bearing B73, and a second wear ring 74. The revolving body C71 is in a sleeve shape with two open ends, a fifth sealing section 711, a third annular boss 712, a second external thread section 713 and a sixth sealing section 714 are sequentially arranged on the outer circular surface of the revolving body C from the front end to the rear end, and a fourth mounting section 715 and a third axial end positioning section 716 are sequentially arranged in the inner hole of the revolving body C from the front end to the rear end. The revolving body D72 is in a sleeve shape with one end open and the other end closed, a fifth mounting section 721, a fourth annular boss 722 and a seventh sealing section 723 are sequentially arranged on the outer circular surface of the revolving body D from the front end to the rear end, and a second internal thread section 724 and an eighth sealing section 725 are sequentially arranged on the inner hole of the revolving body D from the front end to the rear end. The revolving body C71 is in threaded connection with a second internal thread section 724 of the revolving body D72 through a second external thread section 713, and a sixth sealing section 714 on the outer circular surface of the revolving body C71 and an eighth sealing section 725 in the inner hole of the revolving body D72 are opposite to each other and are sealed through an O-shaped sealing ring arranged between the sixth sealing section 714 and the eighth sealing section 725. Knuckle bearing B73 is movably mounted in fourth mounting section 715 of rotor C71 and is axially positioned at both ends. The second wear ring 74 is mounted on the fifth mounting section 721 of the revolving body D72, and both ends thereof are axially positioned against the third annular boss 712 of the revolving body C71 and the fourth annular boss 722 of the revolving body D72, respectively. Piston B7 is slidably mounted in the lower piston chamber by a second wear ring 74 with rotor C71 facing lower front chamber 1611 at the front end of the lower piston chamber and rotor D72 facing lower rear chamber 1611 at the rear end of the lower piston chamber. The Y-ring mounted on the fifth seal segment 711 of the outer circumferential surface of the revolution C71 and the Y-ring mounted on the seventh seal segment 723 of the outer circumferential surface of the revolution D72 together achieve sealing between the piston B7 and the lower piston chamber. Correspondingly, the rear end of the push-pull rod B4 passes through the knuckle bearing B73 in the inner hole of the revolving body C71 and extends into the third shaft end positioning section 716 in the inner hole of the revolving body C71, and then the gasket and the nut arranged at the rear end of the push-pull rod B4 provide axial positioning for the push-pull rod B4.
Preferably, the movable guiding channels A in the upper two-way communication section 13 are arranged in the middle, the number of the water inlet channels A131 and the number of the water outlet channels A132 are identical, four water inlet channels A131 and all water outlet channels A132 are distributed annularly and uniformly around the movable guiding channels A. Based on this arrangement, on the one hand, the full utilization of the inner space of the upper two-way communication section 13 is realized, and the water inlet cross-sectional area and the water outlet cross-sectional area are increased as much as possible in a limited design space, so that the water inlet and outlet amount (6-10 m 3 On the other hand, this channel pattern based on a central symmetrical arrangement helps to keep the center of gravity of the housing assembly centered and stable during water lifting operations, avoiding lateral (radial) tilting of the housing assembly during water lifting operations or standing.
Preferably, the moving guide channel B in the middle two-way communication section 15 is centrally arranged, the water inlet channel B151 andthe number of the water drainage channels B152 is consistent, and all the water inlet channels B151 and all the water drainage channels B152 are uniformly distributed in an annular shape around the movable guide channel B. Based on the arrangement mode, on one hand, the full utilization of the inner space of the middle two-way communication section 15 is realized, the water inlet cross-sectional area and the water outlet cross-sectional area are increased as much as possible in the limited design space, and the water inlet and outlet amount (6-10 m 3 On the other hand, this channel pattern based on a central symmetrical arrangement helps to keep the center of gravity of the housing assembly centered and stable during water lifting operations, avoiding lateral (radial) tilting of the housing assembly during water lifting operations or standing.
Preferably, any two adjacent sections of the drainage and oil-way section 11, the double-wall oil cylinder section 12, the upper two-way communication section 13, the repeating unit section, the lower double-wall water cylinder section 16 and the lower two-way communication section 17 contained in the shell assembly are connected through screw threads of the screwing sleeve 8. The middle double-wall water cylinder section 14 and the middle bidirectional communicating section 15 contained in the repeating unit section are also connected by screw threads through the screwing sleeve 8. The screwing sleeve 8 comprises a semi-annular split A81, a semi-annular split B82 and a locking screw 83, wherein semi-external threads are respectively arranged on the outer walls of the semi-annular split A81 and the semi-annular split B82, spanner positioning holes 400 are respectively arranged on the semi-annular split A81 and the semi-annular split B82, the semi-annular split A81 and the semi-annular split B82 encircle to form a sleeve, the semi-external threads on the semi-annular split A81 and the semi-external threads on the semi-annular split B82 are spliced to form complete external threads, and the semi-annular split A81 and the semi-annular split B82 are connected into a whole through the locking screw 83. The structure of the screwing sleeve 8 is convenient for threaded connection between two long pipe fittings, when the screwing sleeve 8 is assembled, the screwing sleeve 8 is installed on the outer circular surface of one long pipe fitting, then the internal thread in the inner hole of the other long pipe fitting is connected with the external thread of the screwing sleeve 8 in a butt joint mode, and then the screwing sleeve 8 is rotated only under the assistance of a spanner (long pipe fitting with relatively large rotating weight is not needed), so that threaded connection between the two long pipe fittings can be realized, and the assembly difficulty is greatly reduced.
The hydraulic multistage piston liquid extraction experimental device is used for verifying the principle feasibility and liquid extraction effect of the liquid extraction mechanism, so that theoretical support and data support are provided for the field installation and use of the liquid extraction mechanism in (in-situ uranium ore) fields.
The experimental method is as follows:
a certain amount of clear water is filled into the water tank, so that the water level is ensured to be at least 20cm higher than the water inlet A100 of the shell assembly; the piston rod of the driving oil cylinder 2 stretches and contracts to enable the liquid extracting mechanism to continuously extract water in the water cylinder, the extracted water is discharged out of the liquid extracting mechanism through the collecting water outlet 113 and then returns to the water cylinder through the safety valve 93, the flow valve 94 and the water return port 922 on the cylinder cover 92 in sequence, and circulation flow of the water is achieved.
In the process, the built-in water outlet pressure of the safety valve 93 is 3.5MPa, the water pressure of the in-situ uranium ore well under the depth of 250m is simulated, and the flow valve 94 is used for counting the water pumping flow. Through verification, the liquid extraction mechanism can realize continuous liquid extraction, and can meet the requirement of liquid extraction flow of leaching liquid of an on-site uranium ore well.
When the piston rod of the oil cylinder 2 stretches out, the following effects are produced simultaneously:
1. the piston A6 moves downwards to expand the volume of the middle front cavity 1411 to generate negative pressure, and under the action of the negative pressure, the leaching liquid in the well enters the water inlet channel A131 through the water inlet A100 and then enters the middle front cavity 1411 through the first one-way valve 133 to realize liquid suction;
2. The piston B7 moves downwards to expand the volume of the lower front cavity 1611 to generate negative pressure, and under the action of the negative pressure, the leaching liquid in the well enters the water inlet channel B151 through the water inlet B200 and then enters the lower front cavity 1611 through the fourth one-way valve 154 to realize liquid suction;
3. the piston A6 moves downwards to reduce the volume of the middle rear cavity 1412 to generate positive pressure, and under the action of the positive pressure, liquid in the middle rear cavity 1412 sequentially passes through a third water inlet branch 1521 with a fifth one-way valve 155, a water outlet channel B152, a converging channel section 1522, an annular water cavity B142, a first water inlet branch 1321, a water outlet channel A132 and an annular water cavity A122, and enters a collecting water outlet channel 112, and finally is conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge;
4. the piston B7 moves downward, so that the volume of the lower rear chamber 1612 is reduced to generate positive pressure, and under the action of the positive pressure, the liquid in the lower rear chamber 1612 sequentially passes through the drain channel C172 with the eighth one-way valve 174, the annular water cavity C162, the fifth water inlet branch 1524, the drain channel B152, the merging channel segment 1522, the annular water cavity B142, the first water inlet branch 1321, the drain channel a132 and the annular water cavity a122, and enters the merging and discharging channel 112, and finally is conveyed to the outside of the wellhead through a waterway pipeline, so that liquid discharge is realized.
In the above process, when the piston rod of the oil cylinder 2 is retracted, the following effects are simultaneously produced:
1. the piston A6 moves upwards to expand the volume of the middle rear cavity 1412 to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel B151 through the water inlet B200 and then enters the middle rear cavity 1412 through the third one-way valve 153 to realize liquid suction;
2. the piston B7 moves upwards to expand the volume of the lower rear cavity 1612 to generate negative pressure, and under the action of the negative pressure, the leaching liquid in the well enters the water inlet channel C171 through the water inlet C300 and then enters the lower rear cavity 1612 through the seventh one-way valve 173 to realize liquid suction;
3. the piston A6 moves upwards to reduce the volume of the middle front cavity 1411 to generate positive pressure, and under the action of the positive pressure, liquid in the middle front cavity 1411 sequentially passes through the second water inlet branch 1322 with the second one-way valve 134, the water discharge channel A132 and the annular water cavity A122, enters the summarized water outlet channel 112, and is finally conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge;
4. the piston B7 moves upward to reduce the volume of the lower front chamber 1611 to generate positive pressure, and under the action of the positive pressure, the liquid in the lower front chamber 1611 sequentially passes through the fourth water inlet branch 1523 with the sixth one-way valve 156, the water outlet channel B152, the merging channel segment 1522, the annular water cavity B142, the first water inlet branch 1321, the water outlet channel a132 and the annular water cavity a122, and enters the merging water outlet channel 112, and finally is conveyed to the outside of the wellhead through a waterway pipeline to realize liquid discharge.
Claims (10)
1. Hydraulic multistage piston liquid extracting experimental device, characterized by: comprises a liquid extracting mechanism and an experimental mechanism;
the liquid lifting mechanism comprises a shell assembly, an oil cylinder, a push-pull rod A, a push-pull rod B, a connecting head, a piston A and a piston B;
the shell assembly is sequentially provided with a drainage and oil section, a double-wall oil cylinder section, an upper two-way communication section, a repeating unit section, a lower double-wall water cylinder section and a lower two-way communication section from one end to the other end; the drainage and oil path section is internally provided with an oil path channel and a collecting water outlet channel which are not communicated with each other, the collecting water outlet channel forms a collecting water outlet on the end face of the shell assembly, and the oil path channel forms an oil inlet and outlet on the end face of the shell assembly; the inside of the double-wall oil cylinder section is provided with an oil cylinder installation cavity and an annular water cavity A which are not communicated with each other; a water inlet channel A, a water outlet channel A and a movable guide channel A are arranged in the upper two-way communication section; the repeating unit section comprises a middle double-wall water cylinder section and a middle two-way communication section which are connected with each other; a middle piston cavity and an annular water cavity B which are not communicated with each other are arranged in the middle double-wall water cylinder section; a water inlet channel B, a water discharge channel B and a movable guide channel B are arranged in the middle two-way communication section; a lower piston cavity and an annular water cavity C which are not communicated with each other are arranged in the lower double-wall water cylinder section; a water inlet channel C and a water discharge channel C which are not communicated with each other are arranged in the lower two-way communication section;
The cylinder body of the oil cylinder is fixedly arranged at the front end of the oil cylinder mounting cavity, the interior of the cylinder body of the oil cylinder is communicated with the rear end of the oil path channel, and a piston rod of the oil cylinder extends out of the rear end of the oil cylinder mounting cavity and is fixedly connected with the front end of the push-pull rod A; the push-pull rod A is hermetically and slidingly arranged in the movable guide channel A, and the front end and the rear end of the push-pull rod A respectively extend into the oil cylinder installation cavity and the middle piston cavity; the push-pull rod B is arranged in the movable guide channel B in a sealing sliding manner, and the front end and the rear end of the push-pull rod B extend into the middle piston cavity and the lower piston cavity respectively; the piston A is arranged in the middle piston cavity in a sealing sliding manner, and two ends of the piston A are respectively connected with the rear end of the push-pull rod A and the front end of the push-pull rod B; the piston B is hermetically and slidingly arranged in the lower piston cavity and is connected with the rear end of the push-pull rod B;
the experimental mechanism comprises a water cylinder, a hydraulic station, a safety valve and a flow valve; the water cylinder comprises a cylinder body and a cylinder cover detachably arranged at an opening at the upper end of the cylinder body, the lower surface of the cylinder cover faces the inside of the cylinder body, the upper surface of the cylinder cover faces the outside of the cylinder body, and an oil pipe penetrating orifice, a water return orifice and a water pipe penetrating orifice are arranged on the cylinder cover; the lower surface of a cylinder cover of the experiment mechanism is fixedly connected with the end surface of one end, close to the drainage and oil path section, of the liquid lifting mechanism, so that the liquid lifting mechanism is suspended in the water cylinder; when the liquid lifting mechanism is suspended in the water tank, the collecting water outlet of the liquid lifting mechanism penetrates through the water pipe penetrating opening on the tank cover and extends out of the water tank, and the oil inlet and outlet of the liquid lifting mechanism is opposite to the oil pipe penetrating opening on the tank cover; the hydraulic station is communicated with an oil inlet and an oil outlet of the liquid lifting mechanism through an oil way pipeline; the safety valve is connected to the collecting water outlet of the liquid extracting mechanism; the flow valve is connected to the return water ports of the safety valve and the cylinder cover through waterway pipelines at two ends respectively.
2. The hydraulic multistage piston liquid extraction experimental device according to claim 1, wherein: the shell assembly is cylindrical;
in the drainage and oil section, the front ends of the oil path channel and the summarized water outlet channel are communicated to the end face of the shell assembly;
in the double-wall oil cylinder section, an annular water cavity A is arranged on the outer side of an oil cylinder mounting cavity in a surrounding mode, the front end of the annular water cavity A is communicated with the rear end of a summarized water outlet channel, and the front end of the oil cylinder mounting cavity is communicated with the rear end of an oil channel;
in the upper two-way communication section, the water inlet channel A, the water outlet channel A and the movable guide channel A are not communicated with each other; the front end of the water inlet channel A is communicated with the outer circular surface of the shell assembly to form a water inlet A, and a first one-way valve is arranged in the water inlet channel A; the front end of the drainage channel A is communicated with the rear end of the annular water cavity A, the rear end of the drainage channel A is provided with a first water inlet branch and a second water inlet branch, and a second one-way valve is arranged in the second water inlet branch; the front end of the moving guide channel A is communicated with the rear end of the oil cylinder mounting cavity;
in the middle double-wall water cylinder section, an annular water cavity B is arranged on the outer side of a middle piston cavity in a surrounding mode, the front end of the annular water cavity B is communicated with a first water inlet branch of a drainage channel A, and the front end of the middle piston cavity is respectively communicated with a second water inlet branch of the drainage channel A, the rear end of the water inlet channel A and the rear end of a movable guide channel A;
In the middle two-way communication section, the water inlet channel B, the water outlet channel B and the movable guide channel B are not communicated with each other; the middle part of the water inlet channel B is provided with a water inlet B communicated with the outer circular surface of the shell assembly, two ends of the water inlet channel B are respectively provided with a third one-way valve and a fourth one-way valve, and one end of the water inlet channel B provided with the third one-way valve is communicated with the rear end of the middle piston cavity; the front end of the drainage channel B is provided with a third water inlet branch and a converging channel section, a fifth one-way valve is arranged in the third water inlet branch, the third water inlet branch is communicated with the rear end of the middle piston cavity, the converging channel section of the drainage channel B is communicated with the rear end of the annular water cavity B, the rear end of the drainage channel B is provided with a fourth water inlet branch and a fifth water inlet branch, and a sixth one-way valve is arranged in the fourth water inlet branch; the front end of the movable guide channel B is communicated with the rear end of the middle piston cavity;
in the lower double-wall water cylinder section, an annular water cavity C is arranged on the outer side of a lower piston cavity in a surrounding mode, the front end of the annular water cavity C is communicated with a fifth water inlet branch of a water drainage channel B, and the front end of the lower piston cavity is respectively communicated with one end of the water inlet channel B, which is provided with a fourth one-way valve, a fourth water inlet branch of the water drainage channel B and the rear end of a movable guide channel B;
In the lower two-way communication section, a seventh one-way valve is arranged in the water inlet channel C, the front end of the water inlet channel C is communicated with the outer circular surface of the shell assembly to form a water inlet C, and the rear end of the water inlet channel C is communicated with the rear end of the lower piston cavity; an eighth one-way valve is arranged in the drainage channel C, the front end of the drainage channel C is communicated to the rear end of the lower piston cavity, and the rear end of the drainage channel C is communicated to the rear end of the annular water cavity C.
3. The hydraulic multistage piston liquid extraction experimental device according to claim 2, wherein: the piston A divides the middle piston cavity into a middle front cavity relatively close to the front end of the middle piston cavity and a middle rear cavity relatively close to the rear end of the middle piston cavity; the piston A comprises a revolving body A, a revolving body B, a joint bearing A and a first wear-resistant ring; the rotary body A is in a sleeve shape with two open ends, a first sealing section, a first annular boss, a first external thread section and a second sealing section are sequentially arranged on the outer circular surface of the rotary body A from the front end to the rear end, a first mounting section, a first shaft end positioning section, a sealing plate connecting section and a second shaft end positioning section are sequentially arranged in the inner hole of the rotary body A from the front end to the rear end, a sealing plate is welded at the sealing plate section of the inner hole of the rotary body A, and the sealing plate separates the inner hole of the rotary body A into two sections of blind holes which are not communicated with each other; the revolving body B is in a sleeve shape with two open ends, a second installation section, a second annular boss and a third sealing section are sequentially arranged on the outer round surface of the revolving body B from the front end to the rear end, and a first internal thread section, a fourth sealing section and a third installation section are sequentially arranged in an inner hole of the revolving body B from the front end to the rear end; the rotary body A is in threaded connection with a first internal thread section of the rotary body B through a first external thread section, and a second sealing section on the outer circular surface of the rotary body A and a fourth sealing section in an inner hole of the rotary body B are opposite to each other and are sealed through an O-shaped sealing ring arranged between the second sealing section and the fourth sealing section; the two knuckle bearings A are respectively movably arranged in a first installation section of the revolving body A and a third installation section of the revolving body B, and are axially positioned at two ends; the first wear-resisting ring is arranged on the second installation section of the revolving body B, and two ends of the first wear-resisting ring are respectively propped against the first annular boss of the revolving body A and the second annular boss of the revolving body B to be axially positioned; the piston A is slidably arranged in the middle piston cavity through a first wear-resistant ring, the revolving body A faces to a middle front cavity at the front end of the middle piston cavity, and the revolving body B faces to a middle rear cavity at the rear end of the middle piston cavity; the Y-shaped sealing ring arranged on the first sealing section of the outer circular surface of the revolving body A and the Y-shaped sealing ring arranged on the third sealing section of the outer circular surface of the revolving body B jointly realize the sealing between the piston A and the middle piston cavity; correspondingly, the rear end of the push-pull rod A passes through a joint bearing A in an inner hole of the revolving body A and stretches into a first shaft end positioning section in the inner hole of the revolving body A, and then axial positioning is provided for the push-pull rod A through a gasket and a nut which are arranged at the rear end of the push-pull rod A; correspondingly, the front end of the push-pull rod B penetrates through the joint bearing A in the inner hole of the revolving body B and stretches into the second shaft end positioning section in the inner hole of the revolving body A, and then the gasket and the nut arranged at the front end of the push-pull rod B provide axial positioning for the push-pull rod B.
4. A hydraulic multistage piston liquid extraction experimental apparatus according to claim 3, characterized in that: the piston B divides the lower piston cavity into a lower front cavity relatively close to the front end of the lower piston cavity and a lower rear cavity relatively close to the rear end of the lower piston cavity; the piston B comprises a revolving body C, a revolving body D, a joint bearing B and a second wear-resistant ring; the revolving body C is in a sleeve shape with two open ends, a fifth sealing section, a third annular boss, a second external thread section and a sixth sealing section are sequentially arranged on the outer circular surface of the revolving body C from the front end to the rear end, and a fourth mounting section and a third shaft end positioning section are sequentially arranged in the inner hole of the revolving body C from the front end to the rear end; the revolving body D is in a sleeve shape with one end open and the other end closed, a fifth installation section, a fourth annular boss and a seventh sealing section are sequentially arranged on the outer round surface of the revolving body D from the front end to the rear end, and a second internal thread section and an eighth sealing section are sequentially arranged in the inner hole of the revolving body D from the front end to the rear end; the revolving body C is in threaded connection with a second internal thread section of the revolving body D through a second external thread section, and a sixth sealing section on the outer circular surface of the revolving body C and an eighth sealing section in an inner hole of the revolving body D are opposite to each other and are sealed through an O-shaped sealing ring arranged between the sixth sealing section and the eighth sealing section; the knuckle bearing B is movably arranged in a fourth installation section of the revolving body C and is axially positioned at two ends; the second anti-abrasion ring is arranged on the fifth installation section of the revolving body D, and two ends of the second anti-abrasion ring are respectively propped against the third annular boss of the revolving body C and the fourth annular boss of the revolving body D to be axially positioned; the piston B is slidably arranged in the lower piston cavity through a second wear-resistant ring, the revolving body C faces to the lower front cavity at the front end of the lower piston cavity, and the revolving body D faces to the lower rear cavity at the rear end of the lower piston cavity; the Y-shaped sealing ring arranged on the fifth sealing section of the outer circular surface of the revolving body C and the Y-shaped sealing ring arranged on the seventh sealing section of the outer circular surface of the revolving body D jointly realize the sealing between the piston B and the lower piston cavity; correspondingly, the rear end of the push-pull rod B penetrates through the joint bearing B in the inner hole of the revolving body C and stretches into a third axial end positioning section in the inner hole of the revolving body C, and then axial positioning is provided for the push-pull rod B through a gasket and a nut which are arranged at the rear end of the push-pull rod B.
5. The hydraulic multistage piston liquid extraction experimental device of claim 4, wherein: the movable guide channels A in the upper two-way communication section are arranged in the middle, and the number of the water inlet channels A is identical to that of the water outlet channels A, and the number of the water inlet channels A is four; all the water inlet channels A and all the water outlet channels A are uniformly distributed in an annular shape around the movable guide channel A.
6. The hydraulic multistage piston liquid extraction experimental device of claim 5, wherein: the movable guide channels B in the middle two-way communication section are arranged in the middle, and the number of the water inlet channels B is identical to that of the water outlet channels B, and the number of the water inlet channels B is four; all the water inlet channels B and all the water discharge channels B are uniformly distributed in an annular shape around the movable guide channel B.
7. The hydraulic multistage piston liquid extraction experimental device of claim 6, wherein: the drainage and oil way section, the double-wall oil cylinder section, the upper two-way communication section, the repeating unit section, the lower double-wall oil cylinder section and the lower two-way communication section are all connected with each other through screw threads of a screwing sleeve; the middle double-wall water cylinder section and the middle bidirectional communication section contained in the repeating unit section are also connected through screw threads; the screwing sleeve comprises a semi-annular split A, a semi-annular split B and a locking screw, wherein a half external thread is respectively arranged on the outer walls of the semi-annular split A and the semi-annular split B, spanner positioning holes are respectively arranged on the semi-annular split A and the semi-annular split B, the semi-annular split A and the semi-annular split B surround and form a sleeve, the half external thread on the semi-annular split A and the half external thread on the semi-annular split B are spliced to form a complete external thread, and the semi-annular split A and the semi-annular split B are connected into a whole through the locking screw.
8. The hydraulic multistage piston liquid extraction experimental device of claim 7, wherein: the number of repeating unit segments is 1 segment.
9. The hydraulic multistage piston liquid extraction experimental device of claim 8, wherein: the pressure relief pressure of the safety valve is 3.0-4.0MPa.
10. The hydraulic multistage piston liquid extraction experimental method is based on the hydraulic multistage piston liquid extraction experimental device disclosed in claim 9, and is characterized in that: the hydraulic multistage piston liquid extraction experimental device is used for verifying the principle feasibility and the liquid extraction effect of the liquid extraction mechanism, so that theoretical support and data support are provided for the on-site installation and use of the liquid extraction mechanism;
the experimental method is as follows:
a certain amount of clear water is filled into the water tank, so that the water level is ensured to be at least 20cm higher than the water inlet A of the shell assembly; the piston rod of the driving oil cylinder stretches and contracts to enable the liquid extracting mechanism to continuously extract water in the water cylinder, the extracted water is discharged out of the liquid extracting mechanism through the collecting water outlet and then sequentially returns to the water cylinder through the safety valve, the flow valve and the water return port on the cylinder cover, so that the circulating flow of the water is realized;
in the process, the built-in water outlet pressure of the safety valve is 3.5MPa, the water pressure of the in-situ leaching uranium mine under the depth of 250m is simulated, and the flow valve is used for counting the water pumping flow; through verification, the liquid extraction mechanism can realize continuous liquid extraction and can meet the requirement of liquid extraction flow of leaching liquid of an in-situ leaching uranium mine;
In the process, when the piston rod of the oil cylinder stretches out, the following effects are generated simultaneously:
i, the piston A moves downwards to expand the volume of the middle front cavity to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel A through the water inlet A and then enters the middle front cavity through the first one-way valve to realize liquid suction;
II, the piston B moves downwards to expand the volume of the lower front cavity to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel B through the water inlet B and then enters the lower front cavity through the fourth one-way valve to realize liquid suction;
III, the piston A moves downwards to reduce the volume of the middle rear cavity to generate positive pressure, and under the action of the positive pressure, liquid in the middle rear cavity sequentially passes through a third water inlet branch with a fifth one-way valve, a water outlet channel B, a converging channel section, an annular water cavity B, a first water inlet branch, a water outlet channel A and an annular water cavity A, enters a collecting water outlet channel, and is finally conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge;
IV, the piston B moves downwards to reduce the volume of the lower rear cavity to generate positive pressure, and under the action of the positive pressure, liquid in the lower rear cavity sequentially passes through a drainage channel C with an eighth one-way valve, an annular water cavity C, a fifth water inlet branch, a drainage channel B, a converging channel section, the annular water cavity B, a first water inlet branch, a drainage channel A and an annular water cavity A, enters a collecting water outlet channel, and is finally conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge;
When the piston rod of the oil cylinder is retracted, the following effects are simultaneously generated:
i, the piston A moves upwards to expand the volume of the middle rear cavity to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel B through the water inlet B and then enters the middle rear cavity through the third one-way valve to realize liquid suction;
II, the piston B moves upwards to expand the volume of the lower rear cavity to generate negative pressure, and under the action of the negative pressure, leaching liquid in the well enters the water inlet channel C through the water inlet C and then enters the lower rear cavity through the seventh one-way valve to realize liquid suction;
III, the piston A moves upwards to reduce the volume of the front cavity in the middle part to generate positive pressure, and under the action of the positive pressure, liquid in the front cavity in the middle part sequentially passes through a second water inlet branch with a second one-way valve, a water discharge channel A and an annular water cavity A, enters the summarized water outlet channel and is finally conveyed to the outside of a wellhead through a waterway pipeline to realize liquid discharge;
and IV, the piston B moves upwards to reduce the volume of the lower front cavity so as to generate positive pressure, and under the action of the positive pressure, liquid in the lower front cavity sequentially passes through a fourth water inlet branch with a sixth one-way valve, a water outlet channel B, a converging channel section, an annular water cavity B, a first water inlet branch, a water outlet channel A and an annular water cavity A, enters the collecting water outlet channel, and is finally conveyed to the outside of a wellhead through a waterway pipeline so as to realize liquid discharge.
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| CN202211544305X | 2022-12-04 | ||
| CN202211544305 | 2022-12-04 |
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| CN116877408A true CN116877408A (en) | 2023-10-13 |
| CN116877408B CN116877408B (en) | 2024-03-01 |
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| CN202310060030.0A Pending CN116181624A (en) | 2022-12-04 | 2023-01-17 | Hydraulic multistage piston liquid lifting mechanism |
| CN202310064290.5A Active CN116292220B (en) | 2022-12-04 | 2023-02-06 | Hydraulic type multi-stage piston extracting system for leaching liquid of in-situ uranium ore well |
| CN202310065509.3A Pending CN116291356A (en) | 2022-12-04 | 2023-02-06 | Multistage piston extraction method for hydraulic type in-situ uranium ore leaching solution |
| CN202310264209.8A Active CN116877408B (en) | 2022-12-04 | 2023-03-19 | Hydraulic multistage piston liquid extraction experimental device and experimental method |
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| CN202310060030.0A Pending CN116181624A (en) | 2022-12-04 | 2023-01-17 | Hydraulic multistage piston liquid lifting mechanism |
| CN202310064290.5A Active CN116292220B (en) | 2022-12-04 | 2023-02-06 | Hydraulic type multi-stage piston extracting system for leaching liquid of in-situ uranium ore well |
| CN202310065509.3A Pending CN116291356A (en) | 2022-12-04 | 2023-02-06 | Multistage piston extraction method for hydraulic type in-situ uranium ore leaching solution |
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- 2023-01-17 CN CN202310060030.0A patent/CN116181624A/en active Pending
- 2023-02-06 CN CN202310064290.5A patent/CN116292220B/en active Active
- 2023-02-06 CN CN202310065509.3A patent/CN116291356A/en active Pending
- 2023-03-19 CN CN202310264209.8A patent/CN116877408B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN116291356A (en) | 2023-06-23 |
| CN116292220A (en) | 2023-06-23 |
| CN116292220B (en) | 2023-12-29 |
| CN116877408B (en) | 2024-03-01 |
| CN116181624A (en) | 2023-05-30 |
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