Deep well liquid extractor retracting and releasing system and lifting method

Abstract

The deep well liquid extractor retracting and releasing system and lifting method relate to the field of mechanical technology related to in-situ uranium leaching. The deep well liquid extractor retracting and releasing system includes a three-zone coil device, a water pipe pressure relief device and a water-oil pipeline restraint; the three-zone coil device includes a main frame, a water pipe coil mechanism and an oil pipe coil mechanism; the water pipe pressure relief device includes a hydraulic cylinder, a piston cylinder, an upper waterway assembly and a lower waterway assembly; the water-oil pipeline restraint is fixedly installed on the outside of a water pipe and two oil pipes at intervals. The deep well liquid extractor lifting method is based on the deep well liquid extractor retracting and releasing system, and the steps are as follows: clamping and fixing the water pipe; relieving the pressure of the water pipe and draining the water; coiling the water-oil pipeline. The present invention is used for the retracting and releasing operation of the liquid extractor in an in-situ uranium leaching mine, and has the characteristics of simple operation, stable retraction and release, and avoiding scratches or collisions with the well wall, and can effectively reduce the power requirements of the three-zone coil device.

Description

Technical Field

[0001] The invention relates to the technical field of machinery related to in-situ leaching of uranium, in particular to a deep well liquid extractor retracting and releasing system and a lifting method. Background Art

[0002] The invention patent with the authorization announcement number CN116292220B discloses a "hydraulic multi-stage piston extraction system for extracting leachate from in-situ uranium mines deep underwater (less than 200m from the wellhead). The core component for extracting liquid in the extraction system is a liquid extraction mechanism, which is connected to the hydraulic station on the ground through two oil pipes at the upper end, and is connected to the liquid storage tank on the ground through a water pipe at the upper end. When the liquid extraction mechanism is lowered to a predetermined depth in the well, the liquid extraction mechanism is driven by the hydraulic power provided by the hydraulic station, and the suction force provided by the ground water pump is used to extract the liquid in the well and transport it upward through the water pipe, and finally the extracted liquid is discharged into the liquid storage tank.

[0003] The above-mentioned liquid extraction system has the following shortcomings in practical application:

[0004] 1. During the lowering and lifting process of the liquid lifting mechanism, the position and stability requirements are high, and the operation is difficult. This is due to the small gap between the outer wall of the liquid lifting mechanism and the wall of the uranium mine, and the lowering depth is too deep (less than 200m from the wellhead). During the lowering and lifting process of the liquid lifting mechanism, the outer cylindrical surface of the liquid lifting mechanism and the side wall of the anti-winding device (installed on the cable-tube complex at intervals) may scratch or collide with the wall of the uranium mine, causing obstacles to retraction and damage to the wall.

[0005] 2. The upper end of the liquid lifting mechanism is connected to a cable-tube complex, and the upper end of the cable-tube complex is connected to a composite joint on the drum of the winch. When the winch drives the liquid lifting mechanism to lift, the cable-tube complex (including a U-shaped steel cable, a water pipe, two oil pipes and several anti-winding devices) is wound on the drum as a whole. Before the liquid lifting mechanism is lifted, since there is well liquid in the water pipe and the length of the water pipe is more than 200m, if it is directly wound, the load on the winch will be too large. Therefore, a drainage structure that cooperates with a high-pressure inflation device and a pressure relief valve is designed to discharge the well liquid retained in the water pipe. High-pressure air of not less than 5Mpa is injected into the upper end of the water pipe through the high-pressure inflation device. The liquid in the inner cavity of the water pipe and the liquid path of the liquid lifting mechanism is squeezed by the high-pressure air, so that the pressure relief valve installed at the lower end of the liquid lifting mechanism reaches the pressure relief pressure. However, in order to drain the liquid in the water pipe, the inflation volume of high-pressure air must at least fill the entire inner cavity of the water pipe. For a water pipe with a length of more than 200m, the inflation time is too long, which seriously reduces the efficiency of the lifting operation of the liquid lifting mechanism.

[0006] 3. The upper end of the liquid lifting mechanism is connected to a cable-tube complex, and the upper end of the cable-tube complex is connected to the composite joint on the drum of the winch. During the lowering and lifting process of the liquid lifting mechanism, the cable-tube complex may undergo radial twisting (horizontal twisting). However, the twisting is difficult to correct actively, and as the lowering and lifting process proceeds, the twisting angle may further increase, resulting in the liquid lifting mechanism not being able to be lowered or lifted smoothly. In severe cases, the liquid lifting mechanism may be stuck in the well.

[0007] 4. The upper end of the liquid lifting mechanism is connected to a cable-tube complex, and the upper end of the cable-tube complex is connected to a composite joint on the drum of the winch. The structure of the cable-tube complex is complex (including a U-shaped steel cable, a water pipe, two oil pipes and several anti-winding devices). When the cable-tube complex is wound on the drum of the winch, there is a high probability of entanglement between the oil pipe and the steel cable, the steel cable and the steel cable, and the steel cable and the water pipe, resulting in a problem when releasing the cable-tube complex next time. Summary of the invention

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a deep well liquid lifter retracting and releasing system and a lifting method, which solves the following deficiencies existing in the existing hydraulic in-situ leaching uranium mine leachate multi-stage piston liquid lifting system in practical applications: the lowering and lifting processes of the liquid lifting mechanism have high requirements on position, posture and stability, and the operation is difficult; the water pipe pressure relief operation has a large amount of inflation, which takes a long time and reduces the lifting operation efficiency of the liquid lifting mechanism; during the lowering or lifting process of the liquid lifting mechanism, the cable-tube complex is prone to difficult-to-eliminate radial torsion, resulting in the problem that the liquid lifting mechanism is not smoothly lowered or lifted; when the cable-tube complex is wound on the drum of the winch, there is a high probability that the components thereof will be entangled, resulting in the problem that the cable-tube complex will not be smoothly released next time.

[0009] The technical scheme of the present invention is: a deep well liquid lifter retractable system, comprising a liquid lifter, a water pipe and an oil pipe; the liquid lifter is cylindrical, and is provided with a water outlet and two oil passages symmetrically arranged around the water outlet on its upper end surface, and at least one water inlet is provided on its outer circumferential surface; the lower ends of the two oil pipes are respectively sealed and fixedly connected to the two oil passages of the liquid lifter;

[0010] The deep well liquid extractor retracting and releasing system also includes a three-zone coil device, a water pipe pressure relief device and a water-oil pipeline restraint;

[0011] The three-zone coil device includes a main frame, a water pipe coil mechanism and an oil pipe coil mechanism; the main frame is arranged on the ground outside the in-situ uranium mine, the water pipe coil mechanism and the oil pipe coil mechanism are both installed on the main frame, the number of the oil pipe coil mechanisms is two sets, the two sets of oil pipe coil mechanisms are distributed on both sides of the water pipe coil mechanism, the water pipe coil mechanism is detachably connected to the upper end of the water pipe, and the two sets of oil pipe coil mechanisms are detachably connected to the upper ends of the two oil pipes respectively;

[0012] The water pipe pressure relief device comprises a hydraulic cylinder, a piston cylinder, an upper waterway assembly and a lower waterway assembly; the hydraulic cylinder and the piston cylinder are both fixedly installed on the external ground of the in-situ uranium mine, the telescopic rod end of the hydraulic cylinder is connected to the piston rod end of the piston cylinder, and the cylinder wall of the piston cylinder is provided with a liquid inlet and outlet; the upper waterway assembly comprises a connecting pipe A, a switching joint, a three-way joint and a quick pipe joint A which are sealed and connected in sequence; the lower waterway assembly comprises a quick pipe joint B, a bursting valve and a one-way valve which are sealed and connected in sequence; in the upper waterway assembly, a pressure gauge is connected to one of the joints of the three-way joint, the free end of the connecting pipe A is sealed and connected to the liquid inlet and outlet of the piston cylinder, and the quick pipe joint A is detachably connected to the upper port of the water pipe; in the lower waterway assembly, the quick pipe joint B is detachably connected to the lower port of the water pipe, and the free end of the one-way valve is sealed and fixedly connected to the water outlet of the liquid extractor;

[0013] The water-oil pipeline restraint is fixedly installed at intervals outside a water pipe and two oil pipes, and is used to confine the two oil pipes on both sides of a water pipe, thereby connecting a water pipe and two oil pipes into a flexible pipeline complex. The water-oil pipeline restraint is a rigid node on the flexible pipeline complex.

[0014] A further technical solution of the present invention is: the upper end of the water pipe is selectively detachably connected to the water pipe coil mechanism or the quick pipe connector A; when the water pipe is detachably connected to the water pipe coil mechanism, the water pipe pressure relief device is in an idle state, and when the water pipe is detachably connected to the quick pipe connector A, the water pipe coil mechanism is in an idle state.

[0015] A further technical solution of the present invention is: it also includes a water pipe clamp fixing device; the water pipe clamp fixing device includes a lower clamping assembly and an upper clamping assembly; the lower clamping assembly includes two L-shaped steel plates; the L-shaped steel plate includes a horizontal plate and a vertical plate vertically connected to each other, a notch for accommodating the oil pipe is provided in the middle of the horizontal plate, and an arc groove A is provided in the middle of the vertical plate, and the arc grooves A of the two L-shaped steel plates are arranged relative to each other and surround the water pipe therein; the vertical plates of the two L-shaped steel plates are arranged relative to each other and connected by bolts and nuts, so that the arc grooves A of the two L-shaped steel plates clamp the outer wall of the water pipe together, and the lower end surfaces of the horizontal plates of the two L-shaped steel plates are placed together on the in-situ leaching uranium mine On the wellhead of the well, the notches of the two L-shaped steel plates are respectively provided for one oil pipe to pass through; the upper pipe clamping assembly includes two semi-arc clamps; the semi-arc clamps include an arc plate and flat plates A and B connected at both ends of the arc plate, an arc groove B is provided on the arc plate, the arc grooves B of the two semi-arc clamps are arranged oppositely and surround the water pipe therein, the flat plates A of the two semi-arc clamps are arranged oppositely and connected by bolts and nuts, the flat plates B of the two semi-arc clamps are arranged oppositely and connected by bolts and nuts, so that the arc grooves B of the two semi-arc clamps clamp the outer wall of the water pipe together, and the lower end surfaces of the arc plates of the two semi-arc clamps are placed together on the upper end surfaces of the two vertical plates of the two L-shaped steel plates.

[0016] A further technical solution of the present invention is: it also includes a liquid extractor guide device; the liquid extractor guide device is installed at the lower end surface of the liquid extractor, and when the liquid extractor is lifted and moved in the in-situ uranium mine, the liquid extractor guide device rolls in contact with the wall of the in-situ uranium mine; the liquid extractor guide device includes a plate-like main body in the shape of a circular plate, a bolt hole is provided in the middle of the plate-like main body, the plate-like main body is threadedly connected to the lower end surface of the liquid extractor through bolts inserted into the bolt holes, and three guide wheels D are rotatably installed on the outer circumferential surface of the plate-like main body in an annular shape and at the same radial section position, and the rotating shafts of the three guide wheels D are perpendicular to the axial and radial arrangement of the plate-like main body; when the liquid extractor is lifted and moved in the in-situ uranium mine, the three guide wheels D in the liquid extractor guide device roll in contact with the wall of the in-situ uranium mine at the same time.

[0017] A further technical solution of the present invention is: the water pipe coil mechanism comprises a reel A, a support A, a wheel seat A, a guide wheel A and a motor A; a cavity is provided inside the reel A, two through holes connected to the cavity are provided on the outer circumferential surface of the reel A, and the two through holes are arranged at intervals along the circumference of the reel A, the reel A is horizontally rotatably mounted on the support A, the support A is fixedly mounted on the main frame, the wheel seat A is vertically rotatably mounted on the main frame and is located obliquely above the reel A, the guide wheel A is horizontally rotatably mounted on the wheel seat A, the motor A is fixedly mounted on the support A and is associated with the reel A to drive the reel A to rotate, thereby driving the water pipe wound on the reel A to be retracted or released; the water pipe coil mechanism is detachably connected to the upper port of the water pipe through a water pipe end connection assembly mounted on the outer circumferential surface of the reel A;

[0018] The water pipe end connection assembly includes a lifting ring, a wire rope, a locking buckle and a quick pipe joint C; the lifting ring includes a ring hole portion and a screw portion which are fixedly connected to each other; the wire rope is arranged in the cavity of the drum A, and the front and rear ends of the wire rope respectively pass through two through holes on the drum A and are located outside the drum A, the front end of the wire rope passes through the through hole of the drum A to form a free end, and the rear end of the wire rope passes through the ring hole portion of the lifting ring to form a free end; there are two locking buckles, one of which is fixedly installed between the front end of the wire rope and the main body of the wire rope, and the other is fixedly installed between the rear end of the wire rope and the main body of the wire rope, thereby forming a front end locking ring relatively close to the drum A and a rear end locking ring relatively far away from the drum A at the front end and the rear end of the wire rope respectively; the front end of the quick pipe joint C is threadedly connected to the screw portion of the lifting ring, and the rear end is used for detachable connection with the upper port of the water pipe.

[0019] A further technical solution of the present invention is: the tubing coil mechanism comprises a drum B, a support B, a wheel seat B, a guide wheel B, a motor B, a connecting pipe B and a rotary joint; a cavity is provided inside the drum B, and the drum B is horizontally rotatably mounted on two supports B at both ends through short shafts, and the two short shafts at both ends of the drum B are defined as the power short shaft and the other short shaft is defined as the driven short shaft; the end of the driven short shaft connected to the drum B is defined as the front end, and the end of the driven short shaft away from the drum B is defined as the rear end, and the driven short shaft is provided with a hydraulic oil circuit channel that runs through the front and rear end surfaces thereof, and the hydraulic oil circuit channel is provided on the driven short shaft A front channel opening and a rear channel opening are respectively formed on the front and rear end surfaces, the front channel opening is open in the cavity of the reel B, and the rear channel opening is located outside the reel B; the support B is fixedly mounted on the main frame; the wheel seat B is fixedly mounted on the main frame and is located obliquely above the reel B; the guide wheel B is horizontally rotatably mounted on the wheel seat B; the motor B is fixedly mounted on the support B and is associated with the short shaft at one end of the reel B to drive the reel B to rotate, thereby driving the oil pipe wound on the reel B to be reeled in or released; the oil pipe coiling mechanism is detachably connected to the upper port of the oil pipe through the oil pipe end connection assembly mounted on the outer circumference of the reel B;

[0020] The oil pipe end connection assembly includes a quick pipe joint D, both ends of which can be connected to pipes. The quick pipe joint D is fixedly installed on the outer cylindrical surface of the reel B, and the two ends of the quick pipe joint D are respectively located outside the reel B and in the cavity of the reel B. The end of the quick pipe joint D located outside the reel B is used to connect the upper port of the oil pipe; the connecting pipe B is located in the cavity of the reel B, one end of the connecting pipe B is sealed and fixedly connected to the end of the quick pipe joint D located in the cavity of the reel B, and the other end of the connecting pipe B is sealed and fixedly connected to the front channel port of the driven short shaft; the rotary joint includes an inner ring split and an outer ring split; the inner ring split is cylindrical, and a blind hole extending to the rear end face is provided on its front end face, and an annular groove arranged along the circumferential direction is provided on its outer cylindrical surface. The annular groove is connected to the blind hole through several connecting holes; the outer ring split is in the shape of a sleeve, and its seal is rotatably installed on the inner ring split and is positioned in the axial direction. An oil drain hole connected to its inner hole is provided on its outer circular surface, and the port of the oil drain hole facing the outside of the outer ring split is the outer port, and the port of the oil drain hole facing the inner hole of the outer ring split is the inner port; when the outer ring split is sleeved on the inner ring split, the inner port of the oil drain hole of the outer ring split is opposite to and connected to the annular groove on the inner ring split, and the outer port of the oil drain hole on the outer ring split is connected to an external hydraulic station for providing hydraulic power; the front end seal of the inner ring split of the rotary joint is fixedly connected to the rear end of the driven short shaft, so that the hydraulic oil circuit channel of the driven short shaft is connected to the blind hole of the inner ring split.

[0021] A further technical solution of the present invention is: the water-oil pipeline restraint includes a cylindrical restraint body, a through water pipe limiting channel and two through oil pipe limiting channels are provided in the middle of the restraint body, the two oil pipe limiting channels are symmetrically distributed on both sides of the water pipe limiting channel, three guide wheels C are rotatably mounted on the outer circumferential surface of the restraint body in an annular shape and at the same radial section position, and the rotating shafts of the three guide wheels C are perpendicular to the axial and radial arrangement of the water pipe limiting channel; the restraint body is composed of two semi-cylindrical The two parts are spliced ​​and fixedly connected, the water pipe limiting channel is formed by splicing the semicircular grooves on the two semi-cylindrical parts, and the two oil pipe limiting channels are respectively located on the two semi-cylindrical parts; when the water pipe limiting channel embraces the outer wall of the water pipe, the water pipe limiting channel and the water pipe form an interference fit, and when the oil pipe is stuck in the oil pipe limiting channel, the oil pipe and the oil pipe limiting channel form an interference fit; when the liquid lifter moves up and down in the in-situ uranium mine, the three guide wheels C in the water-oil pipeline restraint are in rolling contact with the wall of the in-situ uranium mine at the same time.

[0022] The technical solution of the present invention is: a method for lifting a deep well liquid extractor, based on the above-mentioned deep well liquid extractor retracting and releasing system, for realizing the lifting operation of the liquid extractor in an in-situ leaching uranium mine; before the lifting method is performed, the upper port of the water pipe is connected to the quick pipe joint C;

[0023] Here are the steps:

[0024] S01, water pipe clamping and fixing: use a water pipe clamping and fixing device to clamp the outer wall of the water pipe at the upper end of the wellhead of the in-situ uranium mine;

[0025] S02, water pipe pressure relief and drainage: connect the upper port of the water pipe to the water pipe pressure relief device, and realize water pipe pressure relief and drainage through the water pipe pressure relief device;

[0026] S03, water and oil pipeline coiling: remove the water pipe clamp fixing device, start the three-zone coiling device to reel in the water pipe and two oil pipes respectively, so as to lift the deep well liquid lifter.

[0027] A further technical solution of the present invention is: Step S01 is described in detail as follows:

[0028] A water pipe clamp fixing device is used to clamp the outer wall of the water pipe at the upper end of the wellhead of the in-situ uranium mine; wherein the arc grooves A of the two L-shaped steel plates are arranged oppositely to clamp the outer wall of the water pipe together, and the arc grooves B of the two semi-arc clamps are arranged oppositely to clamp the outer wall of the water pipe together; wherein the lower end surfaces of the horizontal plates of the two L-shaped steel plates are placed together on the wellhead of the in-situ uranium mine, and the lower end surfaces of the arc plates of the two semi-arc clamps are placed together on the upper end surfaces of the two vertical plates of the two L-shaped steel plates;

[0029] When this step is completed, the friction between all the guide wheels C in the water-oil pipeline restraint and the well wall of the in-situ uranium mine, the friction between all the guide wheels D in the liquid lifter guide device and the well wall of the in-situ uranium mine, the friction between the L-shaped steel plate and the water pipe, and the friction between the semi-arc clip and the water pipe jointly bear the weight of the liquid lifter.

[0030] A further technical solution of the present invention is: Step S02 is described in detail as follows:

[0031] Connect the upper port of the water pipe to the rear port of the quick pipe connector A, so that the water channel inside the water pipe pressure relief device is connected, driving the telescopic rod of the hydraulic cylinder to extend, and then driving the piston rod of the piston cylinder to retract, so that the pressure inside the water pipe pressure relief device gradually increases. When the pressure relief pressure set by the bursting valve is reached, the bursting disc installed in the pressure relief port of the bursting valve automatically pops out, realizing water pipe pressure relief and drainage;

[0032] In this step, the water circuit inside the water pipe pressure relief device includes a connecting pipe A, a switching joint, a three-way joint, a quick pipe joint A, a water pipe, a quick pipe joint B and a bursting valve which are connected in sequence.

[0033] A further technical solution of the present invention is: Step S03 is described in detail as follows:

[0034] A. Plug the upper end of the water pipe into the rear end of the quick pipe joint C, remove the water pipe clamp fixing device on the outer wall of the water pipe, and make sure that the upper ends of the two oil pipes are plugged into the ends of the two quick pipe joints D outside the reel B respectively;

[0035] B. The motor A in the water pipe coil mechanism starts, driving the reel A to rotate. The reel A pulls the water pipe upward through the water pipe end connection assembly, so that the upper end of the water pipe passes around the guide wheel A and then coils around the outer surface of the reel A circle by circle;

[0036] C. The motors B in the two sets of tubing coiling mechanisms are started simultaneously to drive the two reels B to rotate. The two reels B pull the corresponding tubing upwards through the tubing end connection components, so that the upper ends of the two tubings pass around the corresponding guide wheels B and then coil around the outer circumference of the corresponding reel B one circle at a time.

[0037] D. As the water pipe and two oil pipes are coiled, the liquid extractor is gradually lifted in the in-situ uranium mine. Whenever a water-oil pipeline restraint is exposed from the wellhead of the in-situ uranium mine, it is removed from the pipeline complex; when the liquid extractor is completely lifted out of the in-situ uranium mine, the liquid extractor is placed on the ground, and the lifting method is completed;

[0038] In this step, during the lifting process of the liquid lifter, all guide wheels D in the guide device of the liquid lifter are in rolling contact with the wall of the in-situ uranium mine at the same time, and all guide wheels C in the water-oil pipeline restraint are in rolling contact with the wall of the in-situ uranium mine at the same time;

[0039] In this step, when the water pipe is coiled on the outer circumferential surface of the reel A, it is spirally coiled from one axial end of the reel A to the other end, and the water pipe overlaps each other between any two adjacent turns, so that each turn of the water pipe coiled on the reel A is squeezed, and the residual water in the water pipe is gradually discharged from the pressure relief port of the bursting valve through the squeezing effect;

[0040] In this step, steps B and C are executed simultaneously to control the rotation speeds of motor A and two motors B so that the winding speeds of the water pipe and the two oil pipes remain consistent.

[0041] A further technical solution of the present invention is: it also includes an M step arranged between steps S01-S02; M, water pipe anti-fall protection: prepare a protective rope, and after the protective rope is passed around the main frame, the two ends of the protective rope are loosely tied to the water pipe in a double-hook manner, thereby forming an upper and lower knot loop between the protective rope and the water pipe, and the relaxation is defined as the protective rope contacting the water pipe without hindering the water pipe from moving upward or downward; if in the subsequent steps, the upper end of the water pipe accidentally detaches, while the water pipe falls rapidly, the protective rope is automatically tensioned, and the friction between the two knot loops and the outer wall of the water pipe locks the water pipe to prevent the water pipe from falling.

[0042] Compared with the prior art, the present invention has the following advantages:

[0043] 1. It is used for the retraction and extension operation of the liquid extractor (liquid extracting mechanism in CN116292220B) in an in-situ uranium mine; it has the characteristics of simple operation, smooth retraction and extension, and avoidance of scratches or collisions with the well wall; it can effectively reduce the power requirement of the three-zone coil device (equivalent to a winch); it has the function of automatically eliminating the radial torsion of the pipeline complex during the retraction and extension process; it can largely avoid the unsmooth retraction and extension caused by the entanglement of the pipeline / pipeline.

[0044] 2. Avoid collision: During the retraction and extension of the liquid lifter, all guide wheels C in the water-oil pipeline restraint are in rolling contact with the wall of the in-situ uranium mine at the same time, and all guide wheels D in the guide device of the liquid lifter are in rolling contact with the wall of the in-situ uranium mine at the same time, which can effectively avoid the vibration or shaking at the ground end from being transmitted to the water pipe, oil pipe and liquid lifter, thereby avoiding the water pipe, oil pipe and liquid lifter from colliding or scratching the wall of the in-situ uranium mine.

[0045] 3. Easy to retract and release: Ⅰ. The three-zone coil device retracts and releases the water pipe and two oil pipes separately, which is equivalent to three independently operated winches. Compared with the solution in CN116292220B where all pipes are wound on the same drum, the power requirement for a single motor is significantly reduced. Ⅱ. During the coiling process of the water pipe after the pressure relief operation is completed, the water in the water pipe is automatically discharged through the pressure relief port of the burst valve under the action of gravity, and a large amount of liquid will not remain in the water pipe, thereby reducing the operating load of the water pipe coil mechanism.

[0046] 4. Eliminate torsion: The wheel seat A in the water pipe coil mechanism is vertically rotatably installed on the main frame. When the wheel seat A rotates, the guide wheel A rotatably installed on the wheel seat A also rotates accordingly; this structure can effectively eliminate the radial torsion of the water pipe during the retraction and release process, and improve the stability of the liquid lifter during the retraction and release process.

[0047] 5. Avoid entanglement: The weight of the liquid lifter is borne by the suspended water pipe, the friction between all guide wheels C and the well wall, and the friction between all guide wheels D and the well wall. Compared with the solution in CN116292220B that only uses steel wire ropes to bear the weight of the liquid lifter, it effectively avoids the problem of unsmooth retraction and extension of the liquid lifter due to easy entanglement of the steel wire rope.

[0048] 6. Compared with the corresponding structure in CN116292220B, the water pipe pressure relief device does not use high-pressure air as the pressurized medium inside the water pipe, but uses hydraulically driven water as the pressurized medium. There is no mixing of the two media. The pressurization process is more stable and controllable than the solution in CN116292220B (high-pressure air pressurization), and the pressure is applied only to flush the bursting disc of the bursting valve, without the need for the piston cylinder and hydraulic cylinder to move a large stroke. In the subsequent water pipe reeling process, the uniquely designed water pipe coil mechanism and water pipe reeling operation are used to gradually discharge the water in the water pipe during the reeling process, greatly improving the lifting efficiency of the liquid lifter (liquid lift mechanism in CN116292220B).

[0049] The present invention is further described below in conjunction with the figures and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the structure of the water pipe connected to the quick pipe joint A in the present invention;

[0051] Figure 2 This is a schematic diagram of the structure of the water pipe connected to the quick pipe joint C in the present invention;

[0052] Figure 3 for Figure 2 Right view of;

[0053] Figure 4 for Figure 3A top view of

[0054] Figure 5 for Figure 1 The enlarged view of Part I;

[0055] Figure 6 for Figure 1 The enlarged view of Part II in the figure;

[0056] Figure 7 for Figure 2 The enlarged view of Part III;

[0057] Figure 8 for Figure 3 The enlarged view of part IV in FIG.

[0058] Fig. 9 for Figure 3 The enlarged view of part V in FIG.

[0059] Fig.10 for Fig. 9 The enlarged view of part VI;

[0060] Fig.11 It is a three-dimensional structural diagram of the water-oil pipeline restraint;

[0061] Fig.12 It is a three-dimensional structural diagram of the liquid extractor guide device;

[0062] Fig.13 It is a three-dimensional structural diagram of the water pipe clamp fixing device;

[0063] Fig.14 It is a structural schematic diagram of a water pipe end connection component.

[0064] Legend: liquid extractor 100; water outlet 101; oil passage 102; main frame 200; water pipe 300; oil pipe 400; reel A11; support A12; wheel seat A13; guide wheel A14; motor A15; lifting ring 161; wire rope 162; front locking ring 1621; rear locking ring 1622; lock buckle 163; quick pipe joint C164; guide steel pipe 165; reel B21; support B22; wheel seat B23; guide wheel B24; motor B25; quick pipe joint D26; driven short shaft 27; hydraulic oil passage 271; connecting pipe B28; rotary joint 29; inner ring Split 291; blind hole 2911; annular groove 2912; connecting hole 2913; outer ring split 292; oil drain hole 2921; plate-like body 31; wheel groove B311; wheel axle accommodating notch 312; guide wheel D32; pressure gauge 40; hydraulic cylinder 41; piston cylinder 42; liquid inlet and outlet 421; connecting pipe A43; adapter 44; three-way connector 45; quick pipe connector A46; quick pipe connector B47; bursting valve 48; one-way valve 49; restrainer body 51; water pipe limiting channel 511; oil pipe limiting channel 512; guide wheel C52; L-shaped steel plate 61; notch 611; semi-arc clip 62. DETAILED DESCRIPTION Example 1

[0065] like Figure 1-14 As shown, the deep well liquid extractor retracting and releasing system includes a liquid extractor 100, a water pipe 300 and two oil pipes 400. The liquid extractor 100 is a liquid extracting mechanism in the authorization announcement number CN116292220B (hydraulic in-situ leaching uranium mine leachate multi-stage piston liquid extracting system). The liquid extractor 100 is cylindrical, and a water outlet 101 and two oil passages 102 symmetrically arranged around the water outlet are provided on its upper end surface, and at least one water inlet is provided on its outer circumferential surface. The lower ports of the two oil pipes 400 are respectively sealed and fixedly connected to the two oil passages 102 of the liquid extractor 100.

[0066] The deep well liquid extractor retracting and releasing system also includes a three-zone coil device, a water pipe pressure relief device and a water-oil pipeline restraint.

[0067] The three-zone coil device includes a main frame 200, a water pipe coil mechanism and an oil pipe coil mechanism. The main frame 200 is set on the ground outside the in-situ uranium mine, and the water pipe coil mechanism and the oil pipe coil mechanism are both installed on the main frame 200. There are two sets of oil pipe coil mechanisms, and the two sets of oil pipe coil mechanisms are distributed on both sides of the water pipe coil mechanism. The water pipe coil mechanism is detachably connected to the upper end of the water pipe 300, and the two sets of oil pipe coil mechanisms are detachably connected to the upper ends of the two oil pipes 400 respectively.

[0068] The water pipe coil mechanism includes a reel A11, a support A12, a wheel seat A13, a guide wheel A14 and a motor A15. A cavity is provided inside the reel A11, and two through holes connected to the cavity are provided on the outer circumferential surface of the reel A11, and the two through holes are arranged at intervals along the circumference of the reel A11. The reel A11 is installed on the support A12 for horizontal rotation (that is, the rotation axis is arranged horizontally), and the support A12 is fixedly installed on the main frame 200. The wheel seat A13 is installed for vertical rotation (that is, the rotation axis is arranged vertically) on the main frame 200 and is located obliquely above the reel A11. The guide wheel A14 is installed for horizontal rotation on the wheel seat A13, and the motor A15 is fixedly installed on the support A12 and is associated with the reel A11 (the association method is that the shaft of the motor A15 is connected to the rotating shaft of the reel A11 through a coupling) to drive the reel A11 to rotate, thereby driving the water pipe wrapped around the reel A11 to be reeled or released. The water pipe coil mechanism is detachably connected to the upper end of the water pipe through a water pipe end connection assembly installed on the outer circumferential surface of the drum A11. The water pipe end connection assembly includes a lifting ring 161, a wire rope 162, a lock buckle 163 and a quick pipe joint C164. The lifting ring 161 includes a ring hole portion and a screw portion that are fixedly connected to each other. The wire rope 162 is arranged in the cavity of the drum A11, and the front and rear ends of the wire rope 162 respectively pass through the two through holes on the drum A11 and are located outside the drum A11. The front end of the wire rope 162 passes through the through hole of the drum A11 to form a free end, and the rear end of the wire rope 162 passes through the ring hole portion of the lifting ring 161 to form a free end. There are two lock buckles 163, one of which is fixedly installed between the front end of the wire rope 162 and the main body of the wire rope, and the other lock buckle 163 is fixedly installed between the rear end of the wire rope 162 and the main body of the wire rope, so that a front locking ring 1621 relatively close to the drum A11 and a rear locking ring 1622 relatively far from the drum A11 are formed at the front end and rear end of the wire rope, respectively. The front end of the quick pipe connector C164 is threadedly connected to the screw portion of the lifting ring 161, and the rear end is used for detachable connection with the upper port of the water pipe 300.

[0069] The tubing coiling mechanism includes a reel B21, a support B22, a wheel seat B23, a guide wheel B24, a motor B25, a connecting pipe B28 and a rotary joint 29. A cavity is provided inside the reel B21. The reel B21 is horizontally rotatably mounted on two supports B22 at both ends through short shafts. The two short shafts at both ends of the reel B21 are defined as the power short shaft associated with the motor B25, and the other short shaft is defined as the driven short shaft 27. The end of the driven short shaft 27 connected to the reel B21 is defined as the front end, and the end of the driven short shaft 27 away from the reel B21 is defined as the rear end. The driven short shaft 27 is provided with a hydraulic oil passage 271 that passes through its front and rear end surfaces. The hydraulic oil passage 271 forms a front channel opening and a rear channel opening on the front and rear end surfaces of the driven short shaft 27, respectively. The front channel opening is open in the cavity of the reel B21, and the rear channel opening is located outside the reel B21. The support B22 is fixedly mounted on the main frame 200, the wheel seat B23 is fixedly mounted on the main frame 200 and is located obliquely above the reel B21, the guide wheel B24 is horizontally rotatably mounted on the wheel seat B23, the motor B25 is fixedly mounted on the support B22 and is associated with the short shaft at one end of the reel B21 (the association method is that the shaft of the motor B25 is connected to the short shaft at one end of the reel B21 through a coupling) to drive the reel B21 to rotate, thereby driving the oil pipe wound on the reel B21 to be reeled or released. The oil pipe coiling mechanism is detachably connected to the upper port of the oil pipe through the oil pipe end connection assembly installed on the outer cylindrical surface of the reel B21. The oil pipe end connection assembly includes a quick pipe joint D26, both ends of which can be connected to the pipe. The quick pipe joint D26 is fixedly installed on the outer circumferential surface of the reel B21. The two ends of the quick pipe joint D26 are respectively located outside the reel B21 and in the cavity of the reel B21. The end of the quick pipe joint D26 located outside the reel B21 is used to connect the upper port of the oil pipe 400. The connecting pipe B28 is located in the cavity of the reel B21. One end of the connecting pipe B28 is sealed and fixedly connected to one end of the quick pipe joint D26 located in the cavity of the reel B21, and the other end of the connecting pipe B28 is sealed and fixedly connected to the front channel port of the driven short shaft 27. The rotary joint 29 includes an inner ring split 291 and an outer ring split 292. The inner ring split body 291 is cylindrical, and a blind hole 2911 extending toward the rear end face is provided on the front end face thereof, and an annular groove 2912 arranged along the circumferential direction is provided on the outer circumferential face thereof, and the annular groove 2912 is connected to the blind hole 2911 through a plurality of connecting holes 2913. The outer ring split body 292 is sleeve-shaped, and its seal is rotatably mounted on the inner ring split body 291, and is positioned in the axial direction, and an oil drain hole 2921 connected to its inner hole is provided on its outer circumferential face, and the port of the oil drain hole 2921 facing the outside of the outer ring split body 292 is the outer port, and the port of the oil drain hole 2921 facing the inner hole of the outer ring split body 292 is the inner port.When the outer ring split body 292 is mounted on the inner ring split body 291, the inner port of the oil drain hole 2921 of the outer ring split body 292 faces and communicates with the annular groove 2912 on the inner ring split body 291, and the outer port of the oil drain hole 2921 on the outer ring split body 292 communicates with an external hydraulic station for providing hydraulic power. The front end of the inner ring split body 291 of the rotary joint 29 is sealed and fixedly connected to the rear end of the driven short shaft 27, so that the hydraulic oil passage 271 of the driven short shaft 27 is communicated with the blind hole 2911 of the inner ring split body 291.

[0070] The water pipe pressure relief device includes a hydraulic cylinder 41, a piston cylinder 42, an upper waterway assembly and a lower waterway assembly. The hydraulic cylinder 41 and the piston cylinder 42 are both fixedly installed on the ground outside the in-situ uranium mine. The telescopic rod end of the hydraulic cylinder 41 is connected to the piston rod end of the piston cylinder 42, and a liquid inlet and outlet 421 is provided on the cylinder wall of the piston cylinder 42. The upper waterway assembly includes a connecting pipe A43, a switching joint 44, a three-way joint 45 and a quick pipe joint A46 which are sealed and connected in sequence. The lower waterway assembly includes a quick pipe joint B47, a burst valve 48 and a one-way valve 49 which are sealed and connected in sequence. In the upper waterway assembly, a pressure gauge 40 is connected to one of the joints of the three-way joint 45, the free end of the connecting pipe A43 is sealed and connected to the liquid inlet and outlet 421 of the piston cylinder 42, and the quick pipe joint A46 is detachably connected to the upper end of the water pipe 300. In the sewer assembly, the quick pipe connector B47 is detachably connected to the lower end of the water pipe 300, the free end of the one-way valve 49 is sealed and fixedly connected to the water outlet 101 of the liquid lifter 100, and the flow direction of the one-way valve 49 is one-way valve 49 → bursting valve 48. A pressure relief port which automatically opens when the set pressure is reached is provided on the side wall of the bursting valve 48, and a bursting disc is installed in the pressure relief port.

[0071] The water-oil pipeline restraint is fixedly installed at intervals outside a water pipe 300 and two oil pipes 400, and is used to limit the two oil pipes 400 on both sides of a water pipe 300, so as to connect the water pipe 300 and the two oil pipes 400 into a flexible pipeline complex. The water-oil pipeline restraint is a rigid node on the flexible pipeline complex. The water-oil pipeline restraint includes a cylindrical restraint body 51. A through water pipe limiting channel 511 and two through oil pipe limiting channels 512 are provided in the middle of the restraint body 51. The two oil pipe limiting channels 512 are symmetrically distributed on both sides of the water pipe limiting channel 511. Three guide wheels C52 are rotatably installed on the outer circumferential surface of the restraint body 51 in an annularly evenly distributed manner and at the same radial section position. The rotating shafts of the three guide wheels C52 are all perpendicular to the axial and radial arrangement of the water pipe limiting channel 511. The restrainer body 51 is formed by splicing and fixing two semi-cylindrical parts, the water pipe limiting channel 511 is formed by splicing the semi-circular grooves on the two semi-cylindrical parts, and the two oil pipe limiting channels 512 are respectively located on the two semi-cylindrical parts. When the water pipe limiting channel 511 embraces the outer wall of the water pipe 300, the water pipe limiting channel 511 forms an interference fit with the water pipe 300, and when the oil pipe 400 is inserted into the oil pipe limiting channel 512, the oil pipe 400 forms an interference fit with the oil pipe limiting channel 512. When the liquid extractor 100 is lifted and moved in the in-situ uranium mine, the three guide wheels C52 in the water-oil pipeline restrainer are in rolling contact with the wall of the in-situ uranium mine at the same time.

[0072] Preferably, it also includes a liquid extractor guide device. The liquid extractor guide device is installed at the lower end surface of the liquid extractor 100. When the liquid extractor 100 is lifted and moved in the in-situ uranium mine, the liquid extractor guide device slides or rolls in contact with the wall of the in-situ uranium mine. The liquid extractor guide device includes a plate-like body 31 in the shape of a circular plate. A bolt hole is provided in the middle of the plate-like body 31. The plate-like body 31 is threadedly connected to the lower end surface of the liquid extractor 100 by inserting a bolt in the bolt hole. Three guide wheels D32 are rotatably installed on the outer circumferential surface of the plate-like body 31 in an annular uniform distribution and at the same radial section position. The rotating shafts of the three guide wheels D32 are perpendicular to the axial and radial arrangement of the plate-like body 31. When the liquid extractor 100 is lifted and moved in the in-situ uranium mine, the three guide wheels D32 in the liquid extractor guide device are in rolling contact with the wall of the in-situ uranium mine at the same time.

[0073] Preferably, the deep well liquid extractor retracting and releasing system also includes a water pipe clamp fixing device. The water pipe clamp fixing device is arranged at the upper end of the in-situ uranium mine. The water pipe clamp fixing device includes a lower pipe clamping assembly and an upper pipe clamping assembly. The lower pipe clamping assembly includes two L-shaped steel plates 61. The L-shaped steel plate 61 includes a horizontal plate and a vertical plate connected vertically to each other, a notch 611 for accommodating the oil pipe 400 is provided in the middle of the horizontal plate, and an arc groove A is provided in the middle of the vertical plate. The arc grooves A of the two L-shaped steel plates 61 are arranged relative to each other and surround the water pipe 300 therein. The vertical plates of the two L-shaped steel plates 61 are arranged relative to each other and connected by bolts and nuts, so that the arc grooves A of the two L-shaped steel plates 61 clamp the outer wall of the water pipe 300 together, and the lower end surfaces of the horizontal plates of the two L-shaped steel plates 61 are placed together on the upper end surface of the wellhead of the in-situ uranium mine, and the notches 611 of the two L-shaped steel plates 61 are respectively provided for one oil pipe 400 to pass through. The upper pipe clamping assembly includes two semi-arc clamps 62. The semi-arc clamps 62 include an arc plate and a flat plate A and a flat plate B connected at both ends of the arc plate. The arc plate is provided with an arc groove B. The arc grooves B of the two semi-arc clamps 62 are arranged relative to each other and surround the water pipe 300 therein. The flat plates A of the two semi-arc clamps 62 are arranged relative to each other and connected by bolts and nuts. The flat plates B of the two semi-arc clamps 62 are arranged relative to each other and connected by bolts and nuts, so that the arc grooves B of the two semi-arc clamps 62 clamp the outer wall of the water pipe 300 together. The lower end surfaces of the arc plates of the two semi-arc clamps 62 are placed together on the upper end surfaces of the two vertical plates of the two L-shaped steel plates 61.

[0074] Preferably, the positional relationship between one guide wheel A14 and two guide wheels B24 in the three-zone coil device is: the two oil pipes 400 extending downward around the two guide wheels B24 are distributed on both sides of the water pipe 300 extending downward around the guide wheel A14, and the relative position between the two oil pipes 400 and the water pipe 300 here is consistent with the relative position of the two oil pipes 400 and the water pipe 300 defined by the water-oil pipeline restraint.

[0075] Preferably, the steel wire rope 162 in the water pipe end connection assembly is a steel wire rope body except for the front locking ring 1621 and the rear locking ring 1622, and the length of the steel wire rope body is more than twice the circumference of the outer circumference of the drum A11 (equivalent to the steel wire rope body being able to wrap around the drum A11 twice in the radial direction at the shortest). Based on this structure, the through hole on the drum A11 can be prevented from directly bearing the tension during the retraction and release process, and the tension is distributed to the entire drum A11, effectively avoiding the concentration of tension and causing the drum wall of the drum A11 to break at the two through holes.

[0076] Preferably, the water pipe end connection assembly also includes a guide steel tube 165, which is axially welded between two through holes on the outer cylindrical surface of the drum A11. The guide steel tube 165 is surrounded by a front end locking ring 1621 of the steel wire rope 162. Based on the space occupied by the guide steel tube 165, the front end locking ring 1621 of the steel wire rope 162 is made to adhere to the outer cylindrical surface of the guide steel tube 165 and avoid contact between the steel wire rope 162 and the edge of the through hole of the drum A11 (to avoid stress concentration).

[0077] Preferably, the plate-like body 31 is provided with a wheel groove B311 for accommodating the guide wheel D32 and axle accommodating notches 312 symmetrically arranged on both sides of the wheel groove B311 at the installation position of the guide wheel D32 on the outer cylindrical surface, and axle mounting walls are respectively formed between the wheel groove B311 and the axle accommodating notches 312 on one side, and the wheel groove B311 is directly connected with the axle accommodating notches 312 on the other side. The guide wheel D32 is installed on the axle and is located in the wheel groove B311, and the axle is rotatably supported on the wheel axle mounting wall, and the two ends of the axle extend out of the two axle accommodating notches 312 respectively.

[0078] In this embodiment, the upper end of the water pipe 300 is selectively detachably connected to the quick pipe joint C164 or the quick pipe joint A46. When the water pipe is detachably connected to the quick pipe joint C164, the water pipe pressure relief device is in an idle state, and the water pipe 300 is reeled or released under the drive of the water pipe coil mechanism. When the water pipe 300 is detachably connected to the quick pipe joint A46, the water pipe coil mechanism is in an idle state, and the water pipe 300 is depressurized and drained under the drive of the water pipe pressure relief device.

[0079] Briefly describe the application of the present invention:

[0080] A method for collecting and placing a deep well liquid extractor is based on the deep well liquid extractor collecting and placing system described in Example 1. The method includes a lifting method and a lowering method. The liquid extractor is collected and placed in an in-situ leaching uranium mine.

[0081] The method of lifting the liquid lifter is as follows:

[0082] S01, water pipe clamping and fixing:

[0083] A water pipe clamp fixing device is used to clamp the outer wall of the water pipe at the upper end of the wellhead of the in-situ uranium mine; wherein, the arc grooves A of the two L-shaped steel plates are arranged relatively to clamp the outer wall of the water pipe together, and the arc grooves B of the two semi-arc clamps are arranged relatively to clamp the outer wall of the water pipe together; wherein, the lower end surfaces of the horizontal plates of the two L-shaped steel plates are placed together on the wellhead of the in-situ uranium mine, and the lower end surfaces of the arc plates of the two semi-arc clamps are placed together on the upper end surfaces of the two vertical plates of the two L-shaped steel plates.

[0084] When this step is completed, the friction between all the guide wheels C in the water-oil pipeline restraint and the well wall of the in-situ uranium mine, the friction between all the guide wheels D in the liquid lifter guide device and the well wall of the in-situ uranium mine, the friction between the L-shaped steel plate and the water pipe, and the friction between the semi-arc clip and the water pipe jointly bear the weight of the liquid lifter.

[0085] S02, water pipe pressure relief and drainage:

[0086] Connect the upper port of the water pipe to the rear port of the quick pipe connector A to connect the water circuit components inside the water pipe pressure relief device; drive the telescopic rod of the hydraulic cylinder to extend, and then drive the piston rod of the piston cylinder to retract; thereby the pressure in the water circuit components gradually increases, and when the pressure relief pressure set by the bursting valve is reached, the bursting disc installed in the pressure relief port of the bursting valve automatically pops out to achieve water pipe pressure relief and drainage.

[0087] In this step, the liquid channel includes a connecting pipe A, a switching joint, a three-way joint A, a quick pipe joint A, a water pipe, a quick pipe joint B and a bursting valve connected in sequence.

[0088] S03, water and oil pipeline coiling:

[0089] A. Plug the upper end of the water pipe into the rear end of the quick pipe joint C, remove the water pipe clamp fixing device on the outer wall of the water pipe, and make sure that the upper ends of the two oil pipes are plugged into the ends of the two quick pipe joints D outside the reel B respectively;

[0090] B. The motor A in the water pipe coil mechanism starts, driving the reel A to rotate. The reel A pulls the water pipe upward through the water pipe end connection assembly, so that the upper end of the water pipe passes around the guide wheel A and then coils around the outer surface of the reel A circle by circle;

[0091] C. The motors B in the two sets of tubing coiling mechanisms are started simultaneously to drive the two reels B to rotate. The two reels B pull the corresponding tubing upwards through the tubing end connection components, so that the upper ends of the two tubings pass around the corresponding guide wheels B and then coil around the outer circumference of the corresponding reel B one circle at a time.

[0092] D. As the water pipe and two oil pipes are coiled, the liquid lifter is gradually lifted in the in-situ uranium mine. Whenever a water-oil pipeline restraint is exposed from the wellhead of the in-situ uranium mine, it is removed from the pipeline complex; when the liquid lifter is completely lifted out of the in-situ uranium mine, the liquid lifter is placed on the ground, completing the lifting method.

[0093] In this step, during the lifting process of the liquid lifter, all guide wheels D in the guide device of the liquid lifter are in rolling contact with the wall of the in-situ uranium mine at the same time, and all guide wheels C in the water-oil pipeline restraint are in rolling contact with the wall of the in-situ uranium mine at the same time.

[0094] In this step, steps B and C are executed simultaneously to control the rotation speeds of motor A and two motors B so that the winding speeds of the water pipe and the two oil pipes remain consistent.

[0095] In this step, when the water pipe is coiled on the outer circumferential surface of the reel A, it is spirally coiled from one axial end to the other end of the reel A, and the water pipe overlaps each other between any two adjacent turns.

[0096] The method of lowering the liquid extractor is as follows:

[0097] S01, suspension extractor:

[0098] A. Confirm that the upper end of the water pipe 300 is connected to the rear end of the quick pipe joint C164, and confirm that the upper ends of the two oil pipes 400 are respectively plugged into the ends of the two quick pipe joints D26 located outside the reel B21;

[0099] B. The motor A15 in the water pipe coil mechanism is started, driving the reel A21 to rotate around the water receiving pipe 300;

[0100] C. The motors B25 in the two sets of tubing coiling mechanisms are started simultaneously to drive the two reels B21 to rotate to wind up the two tubings 400;

[0101] D. Through the actions of steps B and C, the liquid extractor is suspended and it is confirmed that the liquid extractor is located directly above the wellhead of the in-situ uranium mine.

[0102] In this step, steps B and C are executed simultaneously to control the rotation speeds of the motor A15 and the two motors B25 so that the winding speeds of the water pipe 300 and the two oil pipes 400 are always kept consistent.

[0103] S02, lowering of water and oil pipeline:

[0104] A. The motor A15 in the water pipe coil mechanism is started, driving the reel A21 to rotate to release the water pipe 300;

[0105] B. The two motors B25 in the two sets of tubing coiling mechanisms are started simultaneously to drive the two reels B21 to rotate to release the two tubings 400;

[0106] C. Through the actions of steps A and B, the liquid extractor is lowered into the well of the in-situ uranium leaching well through the wellhead of the in-situ uranium leaching well;

[0107] D. Starting from the time when the liquid extractor as a whole enters the wellhead of the in-situ uranium mine, a water-oil pipeline restraint is installed on the outside of the water pipe 300 and the two oil pipes 400 every 20-60m of lowering to avoid interference or entanglement between the water pipe 300 and the oil pipe 400; when the liquid extractor is lowered to a specific depth in the in-situ uranium mine, the lowering method is completed.

[0108] In this step, when the liquid extractor is lowered, all guide wheels D32 in the guide device of the liquid extractor are in rolling contact with the wall of the in-situ uranium mine at the same time, and all guide wheels C52 in the water-oil pipeline restraint are in rolling contact with the wall of the in-situ uranium mine at the same time.

[0109] In this step, steps A and B are executed simultaneously to control the rotation speeds of the motor A15 and the two motors B25 so that the release speeds of the water pipe 300 and the two oil pipes 400 are always kept consistent.

[0110] Preferably, an M step is provided between steps S01 and S02 of the method of lifting the liquid lifter, and between steps S01 and S02 of the method of lowering the liquid lifter.

[0111] M, water pipe fall protection:

[0112] Prepare a protective rope. After passing the protective rope around the main frame, the two ends of the protective rope are loosely tied to the water pipe using a double loop knot (sheep's hoof knot), thereby forming two upper and lower knot loops between the protective rope and the water pipe. The relaxation is defined as the protective rope being in contact with the water pipe without hindering the water pipe from moving upward or downward. If in subsequent steps, the upper end of the water pipe accidentally detaches, the protective rope is automatically tightened while the water pipe falls rapidly, and the friction between the two knot loops and the outer wall of the water pipe locks the water pipe to prevent it from falling.

[0113] In this step, the area of ​​the inner region of the loop is 1.3-1.8 times the radial cross-sectional area of ​​the protective rope. If it is less than 1.3 times, it will cause the water pipe to move up or down poorly. If it is greater than 1.8 times, it will be difficult to lock the water pipe when it falls rapidly.

Claims

1. A deep well liquid lifter retractable system, comprising a liquid lifter, a water pipe and an oil pipe; the liquid lifter is cylindrical, with a water outlet and two oil passages symmetrically arranged around the water outlet on its upper end surface, and at least one water inlet on its outer circumferential surface; the lower ends of the two oil pipes are respectively sealed and fixedly connected to the two oil passages of the liquid lifter; Its characteristics are: It also includes a three-zone coil device, a water pipe pressure relief device and a water-oil pipe restraint; The three-zone coil device includes a main frame, a water pipe coil mechanism and an oil pipe coil mechanism; the main frame is arranged on the ground outside the in-situ uranium mine, the water pipe coil mechanism and the oil pipe coil mechanism are both installed on the main frame, the number of the oil pipe coil mechanisms is two sets, the two sets of oil pipe coil mechanisms are distributed on both sides of the water pipe coil mechanism, the water pipe coil mechanism is detachably connected to the upper end of the water pipe, and the two sets of oil pipe coil mechanisms are detachably connected to the upper ends of the two oil pipes respectively; The water pipe pressure relief device comprises a hydraulic cylinder, a piston cylinder, an upper waterway assembly and a lower waterway assembly; the hydraulic cylinder and the piston cylinder are both fixedly installed on the external ground of the in-situ uranium mine, the telescopic rod end of the hydraulic cylinder is connected to the piston rod end of the piston cylinder, and the cylinder wall of the piston cylinder is provided with a liquid inlet and outlet; the upper waterway assembly comprises a connecting pipe A, a switching joint, a three-way joint and a quick pipe joint A which are sealed and connected in sequence; the lower waterway assembly comprises a quick pipe joint B, a bursting valve and a one-way valve which are sealed and connected in sequence; in the upper waterway assembly, a pressure gauge is connected to one of the joints of the three-way joint, the free end of the connecting pipe A is sealed and connected to the liquid inlet and outlet of the piston cylinder, and the quick pipe joint A is detachably connected to the upper port of the water pipe; in the lower waterway assembly, the quick pipe joint B is detachably connected to the lower port of the water pipe, and the free end of the one-way valve is sealed and fixedly connected to the water outlet of the liquid extractor; The water-oil pipeline restraint is fixedly installed at intervals outside a water pipe and two oil pipes, and is used to limit the two oil pipes on both sides of the water pipe, so as to connect the water pipe and the two oil pipes into a flexible pipeline complex. The water-oil pipeline restraint is a rigid node on the flexible pipeline complex; The water pipe coil mechanism comprises a reel A, a support A, a wheel seat A, a guide wheel A and a motor A; a cavity is provided inside the reel A, and two through holes connected to the cavity are provided on the outer circumference of the reel A, and the two through holes are arranged at intervals along the circumference of the reel A, the reel A is horizontally rotatably mounted on the support A, the support A is fixedly mounted on the main frame, the wheel seat A is vertically rotatably mounted on the main frame and is located obliquely above the reel A, the guide wheel A is horizontally rotatably mounted on the wheel seat A, the motor A is fixedly mounted on the support A and is associated with the reel A to drive the reel A to rotate, thereby driving the water pipe wound on the reel A to be retracted or released; the water pipe coil mechanism is detachably connected to the upper port of the water pipe through a water pipe end connection assembly mounted on the outer circumference of the reel A; The water pipe end connection assembly includes a lifting ring, a wire rope, a locking buckle and a quick pipe joint C; the lifting ring includes a ring hole portion and a screw portion which are fixedly connected to each other; the wire rope is arranged in the cavity of the drum A, and the front and rear ends of the wire rope respectively pass through two through holes on the drum A and are located outside the drum A, the front end of the wire rope passes through the through hole of the drum A to form a free end, and the rear end of the wire rope passes through the ring hole portion of the lifting ring to form a free end; there are two locking buckles, one of which is fixedly installed between the front end of the wire rope and the main body of the wire rope, and the other is fixedly installed between the rear end of the wire rope and the main body of the wire rope, thereby forming a front end locking ring relatively close to the drum A and a rear end locking ring relatively far away from the drum A at the front end and the rear end of the wire rope respectively; the front end of the quick pipe joint C is threadedly connected to the screw portion of the lifting ring, and the rear end is used for detachable connection with the upper port of the water pipe.

2. The deep well liquid extractor retractable system according to claim 1, characterized in that: The upper end of the water pipe is selectively detachably connected to the water pipe coil mechanism or the quick pipe joint A; when the water pipe is detachably connected to the water pipe coil mechanism, the water pipe pressure relief device is in an idle state, and when the water pipe is detachably connected to the quick pipe joint A, the water pipe coil mechanism is in an idle state.

3. The deep well liquid extractor retractable system according to claim 2, characterized in that: It also includes a water pipe clamping and fixing device; the water pipe clamping and fixing device includes a lower pipe clamping assembly and an upper pipe clamping assembly; the lower pipe clamping assembly includes two L-shaped steel plates; the L-shaped steel plates include a horizontal plate and a vertical plate vertically connected to each other, a notch for accommodating an oil pipe is provided in the middle of the horizontal plate, and an arc groove A is provided in the middle of the vertical plate, and the arc grooves A of the two L-shaped steel plates are arranged oppositely and surround the water pipe therein; The vertical plates of the two L-shaped steel plates are arranged relative to each other and connected by bolts and nuts, so that the arc grooves A of the two L-shaped steel plates clamp the outer wall of the water pipe together, the lower end surfaces of the horizontal plates of the two L-shaped steel plates are placed together on the wellhead of the in-situ uranium mine, and the gaps of the two L-shaped steel plates are respectively provided for one oil pipe to pass through; the upper pipe clamping assembly includes two semi-arc clamps; the semi-arc clamp includes an arc plate and a flat plate A and a flat plate B connected at both ends of the arc plate, the arc plate is provided with an arc groove B, the arc grooves B of the two semi-arc clamps are arranged relative to each other and surround the water pipe therein, the flat plates A of the two semi-arc clamps are arranged relative to each other and connected by bolts and nuts, the flat plates B of the two semi-arc clamps are arranged relative to each other and connected by bolts and nuts, so that the arc grooves B of the two semi-arc clamps clamp the outer wall of the water pipe together, and the lower end surfaces of the arc plates of the two semi-arc clamps are placed together on the upper end surfaces of the two vertical plates of the two L-shaped steel plates.

4. The deep well liquid extractor retractable system as claimed in claim 3, characterized in that: It also includes a liquid extractor guide device; the liquid extractor guide device is installed at the lower end surface of the liquid extractor, and when the liquid extractor is lifted and moved in the in-situ uranium mine, the liquid extractor guide device rolls in contact with the wall of the in-situ uranium mine; the liquid extractor guide device includes a plate-like main body in the shape of a circular plate, a bolt hole is provided in the middle of the plate-like main body, the plate-like main body is threadedly connected to the lower end surface of the liquid extractor through bolts inserted into the bolt holes, and three guide wheels D are rotatably installed on the outer circumferential surface of the plate-like main body in a circular shape and at the same radial section position, and the rotating shafts of the three guide wheels D are perpendicular to the axial and radial arrangement of the plate-like main body; when the liquid extractor is lifted and moved in the in-situ uranium mine, the three guide wheels D in the liquid extractor guide device roll in contact with the wall of the in-situ uranium mine at the same time.

5. The deep well liquid extractor retracting and releasing system according to claim 4, characterized in that: The tubing coil mechanism includes a drum B, a support B, a wheel seat B, a guide wheel B, a motor B, a connecting pipe B and a rotary joint; a cavity is provided inside the drum B, and the drum B is horizontally rotatably mounted on two supports B through short shafts at both ends. The two short shafts at both ends of the drum B are defined as the power short shaft associated with the motor B, and the other short shaft is defined as the driven short shaft; the end of the driven short shaft connected to the drum B is defined as the front end, and the end of the driven short shaft away from the drum B is defined as the rear end. The driven short shaft is provided with a hydraulic oil circuit channel that runs through the front and rear end surfaces thereof, and the hydraulic oil circuit channel is divided into A front channel opening and a rear channel opening are formed respectively, the front channel opening is open in the cavity of the reel B, and the rear channel opening is located outside the reel B; the support B is fixedly mounted on the main frame; the wheel seat B is fixedly mounted on the main frame and is located obliquely above the reel B; the guide wheel B is horizontally rotatably mounted on the wheel seat B; the motor B is fixedly mounted on the support B and is associated with the short shaft at one end of the reel B to drive the reel B to rotate, thereby driving the oil pipe wound on the reel B to be reeled in or released; the oil pipe coiling mechanism is detachably connected to the upper end of the oil pipe through the oil pipe end connection assembly mounted on the outer circumference of the reel B; The oil pipe end connection assembly includes a quick pipe joint D, both ends of which can be connected to pipes. The quick pipe joint D is fixedly installed on the outer cylindrical surface of the reel B, and the two ends of the quick pipe joint D are respectively located outside the reel B and in the cavity of the reel B. The end of the quick pipe joint D located outside the reel B is used to connect the upper port of the oil pipe; the connecting pipe B is located in the cavity of the reel B, one end of the connecting pipe B is sealed and fixedly connected to the end of the quick pipe joint D located in the cavity of the reel B, and the other end of the connecting pipe B is sealed and fixedly connected to the front channel port of the driven short shaft; the rotary joint includes an inner ring split and an outer ring split; the inner ring split is cylindrical, and a blind hole extending to the rear end face is provided on its front end face, and an annular groove arranged along the circumferential direction is provided on its outer cylindrical surface. The annular groove is connected to the blind hole through several connecting holes; the outer ring split is in the shape of a sleeve, and its seal is rotatably installed on the inner ring split and is positioned in the axial direction. An oil drain hole connected to its inner hole is provided on its outer circular surface, and the port of the oil drain hole facing the outside of the outer ring split is the outer port, and the port of the oil drain hole facing the inner hole of the outer ring split is the inner port; when the outer ring split is sleeved on the inner ring split, the inner port of the oil drain hole of the outer ring split is opposite to and connected to the annular groove on the inner ring split, and the outer port of the oil drain hole on the outer ring split is connected to an external hydraulic station for providing hydraulic power; the front end seal of the inner ring split of the rotary joint is fixedly connected to the rear end of the driven short shaft, so that the hydraulic oil circuit channel of the driven short shaft is connected to the blind hole of the inner ring split.

6. The deep well liquid extractor retracting and releasing system according to claim 5, characterized in that: The water-oil pipeline restraint includes a cylindrical restraint body, a through water pipe limiting channel and two through oil pipe limiting channels are arranged in the middle of the restraint body, and the two oil pipe limiting channels are symmetrically distributed on both sides of the water pipe limiting channel. Three guide wheels C are rotatably installed on the outer circumferential surface of the restraint body in an annular shape and at the same radial section position, and the rotating shafts of the three guide wheels C are perpendicular to the axial and radial arrangement of the water pipe limiting channel; the restraint body is composed of two semi-cylindrical parts spliced ​​and fixedly connected The water pipe limiting channel is formed by splicing the semicircular grooves on the two semi-cylindrical split bodies, and the two oil pipe limiting channels are respectively located on the two semi-cylindrical split bodies; when the water pipe limiting channel embraces the outer wall of the water pipe, the water pipe limiting channel and the water pipe form an interference fit, and when the oil pipe is stuck in the oil pipe limiting channel, the oil pipe and the oil pipe limiting channel form an interference fit; when the liquid lifter moves up and down in the in-situ uranium mine, the three guide wheels C in the water-oil pipeline restraint are in rolling contact with the wall of the in-situ uranium mine at the same time.

7. A method for lifting a deep well liquid extractor, based on the deep well liquid extractor retracting and releasing system according to claim 6, for realizing the lifting operation of the liquid extractor in an in-situ leaching uranium mine; wherein: Before performing the lifting method, connect the upper end of the water pipe to the quick pipe connector C; Here are the steps: S01, water pipe clamping and fixing: use a water pipe clamping and fixing device to clamp the outer wall of the water pipe at the upper end of the wellhead of the in-situ uranium mine; S02, water pipe pressure relief and drainage: connect the upper port of the water pipe to the water pipe pressure relief device, and realize water pipe pressure relief and drainage through the water pipe pressure relief device; S03, water and oil pipeline coiling: remove the water pipe clamp fixing device, start the three-zone coiling device to reel in the water pipe and two oil pipes respectively, so as to lift the deep well liquid lifter.

8. The method for lifting a deep well liquid extractor according to claim 7, wherein: Steps S01 to S03 are as follows: S01, water pipe clamping and fixing: A water pipe clamp fixing device is used to clamp the outer wall of the water pipe at the upper end of the wellhead of the in-situ uranium mine; wherein the arc grooves A of the two L-shaped steel plates are arranged oppositely to clamp the outer wall of the water pipe together, and the arc grooves B of the two semi-arc clamps are arranged oppositely to clamp the outer wall of the water pipe together; wherein the lower end surfaces of the horizontal plates of the two L-shaped steel plates are placed together on the wellhead of the in-situ uranium mine, and the lower end surfaces of the arc plates of the two semi-arc clamps are placed together on the upper end surfaces of the two vertical plates of the two L-shaped steel plates; When this step is completed, the friction between all guide wheels C in the water-oil pipeline restraint and the well wall of the in-situ uranium mine, the friction between all guide wheels D in the liquid lifter guide device and the well wall of the in-situ uranium mine, the friction between the L-shaped steel plate and the water pipe, and the friction between the semi-arc clip and the water pipe jointly bear the weight of the liquid lifter; S02, water pipe pressure relief and drainage: Connect the upper port of the water pipe to the rear port of the quick pipe connector A, so that the water channel inside the water pipe pressure relief device is connected, driving the telescopic rod of the hydraulic cylinder to extend, and then driving the piston rod of the piston cylinder to retract, so that the pressure inside the water pipe pressure relief device gradually increases. When the pressure relief pressure set by the bursting valve is reached, the bursting disc installed in the pressure relief port of the bursting valve automatically pops out, realizing water pipe pressure relief and drainage; In this step, the water circuit inside the water pipe pressure relief device includes a connecting pipe A, a switching joint, a tee joint, a quick pipe joint A, a water pipe, a quick pipe joint B and a bursting valve which are connected in sequence; S03, water and oil pipeline coiling: A. Plug the upper end of the water pipe into the rear end of the quick pipe joint C, remove the water pipe clamp fixing device on the outer wall of the water pipe, and make sure that the upper ends of the two oil pipes are plugged into the ends of the two quick pipe joints D outside the reel B respectively; B. The motor A in the water pipe coil mechanism starts, driving the reel A to rotate. The reel A pulls the water pipe upward through the water pipe end connection assembly, so that the upper end of the water pipe passes around the guide wheel A and then coils around the outer surface of the reel A circle by circle; C. The motors B in the two sets of tubing coiling mechanisms are started simultaneously to drive the two reels B to rotate. The two reels B pull the corresponding tubing upwards through the tubing end connection components, so that the upper ends of the two tubings pass around the corresponding guide wheels B and then coil around the outer circumference of the corresponding reel B one circle at a time. D. As the water pipe and two oil pipes are coiled, the liquid extractor is gradually lifted in the in-situ uranium mine. Whenever a water-oil pipeline restraint is exposed from the wellhead of the in-situ uranium mine, it is removed from the pipeline complex; when the liquid extractor is completely lifted out of the in-situ uranium mine, the liquid extractor is placed on the ground, and the lifting method is completed; In this step, during the lifting process of the liquid lifter, all guide wheels D in the guide device of the liquid lifter are in rolling contact with the wall of the in-situ uranium mine at the same time, and all guide wheels C in the water-oil pipeline restraint are in rolling contact with the wall of the in-situ uranium mine at the same time; In this step, when the water pipe is coiled on the outer circumferential surface of the reel A, it is spirally coiled from one axial end of the reel A to the other end, and the water pipe overlaps each other between any two adjacent turns, so that each turn of the water pipe coiled on the reel A is squeezed, and the residual water in the water pipe is gradually discharged from the pressure relief port of the bursting valve through the squeezing effect; In this step, steps B and C are executed simultaneously to control the rotation speeds of motor A and two motors B so that the winding speeds of the water pipe and the two oil pipes remain consistent.

9. The method for lifting a deep well liquid extractor according to claim 8, characterized in that: It also includes an M step between steps S01-S02; M, water pipe anti-fall protection: prepare a protective rope, and after the protective rope is passed around the main frame, the two ends of the protective rope are loosely tied to the water pipe in a double-hook manner, thereby forming an upper and lower knot loop between the protective rope and the water pipe, and the relaxation is defined as the protective rope being in contact with the water pipe without hindering the water pipe from moving upward or downward; if in subsequent steps, the upper end of the water pipe accidentally detaches, while the water pipe falls rapidly, the protective rope is automatically tensioned, and the friction between the two knot loops and the outer wall of the water pipe locks the water pipe to prevent the water pipe from falling.

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