CN110075997B - Magnetic flux dynamic adjustment system and method for particle impact drilling - Google Patents
Magnetic flux dynamic adjustment system and method for particle impact drilling Download PDFInfo
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- CN110075997B CN110075997B CN201910403200.4A CN201910403200A CN110075997B CN 110075997 B CN110075997 B CN 110075997B CN 201910403200 A CN201910403200 A CN 201910403200A CN 110075997 B CN110075997 B CN 110075997B
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- 239000002245 particle Substances 0.000 title claims abstract description 133
- 230000004907 flux Effects 0.000 title claims abstract description 103
- 238000005553 drilling Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007885 magnetic separation Methods 0.000 claims abstract description 215
- 239000006148 magnetic separator Substances 0.000 claims abstract description 39
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000009825 accumulation Methods 0.000 claims abstract description 15
- 230000003993 interaction Effects 0.000 claims abstract description 14
- 239000011268 mixed slurry Substances 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 13
- 230000033228 biological regulation Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 230000005347 demagnetization Effects 0.000 claims description 5
- 230000005674 electromagnetic induction Effects 0.000 claims description 5
- 238000010191 image analysis Methods 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 2
- 230000008844 regulatory mechanism Effects 0.000 claims 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 239000011435 rock Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
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Abstract
The invention discloses a magnetic flux dynamic adjustment system and method for particle impact drilling, and belongs to the technical field of petroleum drilling. The magnetic separator comprises a feeding pipeline, a magnetic separator, a magnetic flux dynamic adjusting mechanism and a controller, wherein the magnetic flux dynamic adjusting mechanism is arranged on the magnetic separator (4), the controller is electrically connected with the magnetic flux dynamic adjusting mechanism to realize signal interaction, the magnetic flux dynamic adjusting mechanism is used for monitoring the rotation condition of the magnetic separation cylinder (41) and the particle surplus in the magnetic separation groove body (44), and the controller is used for controlling the magnetic flux of the magnetic separation cylinder (41) to keep matching with the particle surplus. The magnetic separation system has the beneficial effects that the magnetic flux can be self-adaptively and dynamically adjusted based on the particle accumulation residual quantity, the magnetic separation requirements of different layers, discharge capacity, particle concentration and other working conditions are met to achieve optimal working efficiency, stable operation is ensured, excessive energy consumption can be avoided, the economic benefit is improved, and the applicability and the economical efficiency of the magnetic separation system are enhanced.
Description
Technical Field
The invention relates to the technical field of petroleum drilling, in particular to a magnetic flux dynamic adjustment system and method for particle impact drilling.
Background
The particle impact drilling technology belongs to a novel front drilling technology in petroleum exploration industry, and mainly utilizes steel ball particles with the diameter of 1-3 mm to impact rock at high speed and high frequency, and the rock is broken rapidly by means of instant acting force, so that high-efficiency drilling in hard and difficult-to-drill stratum is realized. The particle impact drilling technology is applied based on a particle impact drilling system, and the particle impact drilling system mainly comprises a particle injection system and a particle separation system, wherein the particle separation system is used for separating particles from mixed slurry such as particles, drilling fluid, rock debris and the like which are returned from the bottom of a well, re-injecting the particles into the bottom of the well, and improving the utilization rate of the particles so as to realize recycling.
At present, the particle separation and recovery modes mainly comprise the following two modes: firstly, vibrating recycling, namely separating mixed slurry such as particles, drilling fluid, rock fragments and the like by utilizing a single-stage or multi-stage vibrating screen, wherein the mode is simple to realize, but the particles cannot be separated from the rock fragments with the same size, and the rock breaking efficiency of particle drilling can be influenced after long-term application; and secondly, magnetic separation type recycling, namely, utilizing the characteristic that steel ball particles can be magnetically separated, and enabling mixed slurry of particles, drilling fluid, rock debris and the like to pass through a component with magnetism so as to separate and recycle the particles. Compared with vibration type recovery, magnetic separation type recovery ensures the efficiency of particle recovery, and is more suitable for the particle drilling site at the present stage.
Due to the increase of underground footage and the change of lithology, particles which are driven out by PID drills at different intervals are different, and the components of drilling fluid are required to be adjusted and changed, so that the characteristics of mixed slurry returned from underground and the proportion of particles are continuously changed, but when the particles are magnetically separated by the existing magnetic separator, the magnetic flux of the magnetic separation cylinder is solid, and the following two problems possibly occur: firstly, the magnetic field of the magnetic separation cylinder is relatively weak, the magnetic separation adsorption speed of the magnetic separation cylinder is smaller than the stacking speed of particles, and the particles are excessively stacked in the magnetic separation tank body, so that the magnetic separation tank body is easy to be blocked, and even the magnetic separator is damaged; secondly, the magnetic field of the magnetic separation barrel is relatively strong, the magnetic separation adsorption speed of the magnetic separation barrel is larger than the stacking speed of particles, the magnetic field generated by the magnetic separation barrel is excessive, excessive energy consumption is caused, and the economical efficiency is poor.
Disclosure of Invention
(one) technical purpose
Aiming at the defects of the prior art, the invention provides a magnetic flux dynamic adjustment system and method for particle impact drilling, which aim to realize the self-adaptive dynamic adjustment of magnetic flux of the system based on the particle accumulation residual quantity, meet the magnetic separation requirements of different layer section underground working conditions, optimize the working efficiency of a magnetic separation system and improve the applicability and economy of the magnetic separation system.
(II) technical scheme
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a magnetic flux dynamic regulation system for particle impact drilling comprises a feeding pipeline and a magnetic separator, wherein the feeding pipeline is communicated with the magnetic separator; the magnetic separator comprises a frame, a magnetic separation tank body, a magnetic separation barrel, a feeding box and a discharging box, wherein the magnetic separation tank body is arranged on the frame, the magnetic separation barrel is positioned in the magnetic separation tank body and used for carrying out magnetic separation treatment on mixed slurry, the feeding box and the discharging box are arranged on the frame and positioned on two sides of the magnetic separation tank body, the feeding box is communicated with the magnetic separation tank body to convey the mixed slurry into the magnetic separation tank body, and the discharging box is used for receiving particles carried out by the magnetic separation barrel.
The magnetic flux dynamic regulating system for particle impact drilling further comprises a magnetic flux dynamic regulating mechanism and a controller, wherein the magnetic flux dynamic regulating mechanism is arranged on the magnetic separator, the controller is electrically connected with the magnetic flux dynamic regulating mechanism to realize signal interaction, the magnetic flux dynamic regulating mechanism is used for monitoring the rotation condition of the magnetic separation barrel and the particle surplus in the magnetic separation groove body, and the controller is used for controlling the magnetic flux of the magnetic separation barrel to keep matching with the particle surplus.
The magnetic flux dynamic adjusting mechanism adjusts the magnetic flux of the magnetic separation barrel to coordinate the magnetic field intensity to be matched with the residual particle quantity entering the magnetic separation groove body, specifically, the magnetic field intensity is increased when the particle residual quantity is overlarge, and the magnetic field intensity is reduced or unchanged when the particle residual quantity is smaller. It should be noted that, because the characteristics of concentration, density, fluidity, etc. in the mixed slurry are variable, the magnetic flux of the magnetic separation cylinder of the existing magnetic separator is mostly fixed, and even though the magnetic separation cylinder is partitioned, the magnetic flux of the magnetic system of each region is also fixed, so that the method can not be suitable for processing the mixed slurry with different particle ratios; when the particles in the mixed slurry are too few, the working efficiency of the magnetic separation cylinder is too high and exceeds the magnetic field strength required by the particles in the mixed slurry, so that the waste of the magnetic separation efficiency is caused; when too many particles in the mixed slurry, the working efficiency of the magnetic separation barrel cannot meet the magnetic separation requirement, all particles cannot be separated, the particles which are not separated and magnetically separated are accumulated in the magnetic separation groove body, a drilling fluid discharge pipeline can be blocked, and even the magnetic separation barrel is blocked, so that the magnetic separation work of the whole system is influenced.
The magnetic separator is based on the principle of electromagnetic induction, and the magnetic separator has a magnetic force in an energized state, and the magnitude of the magnetic field or the magnetic force is determined by the magnitude of the passing current.
Further, the magnetic separation barrel is provided with a plurality of magnetic separation units based on electromagnetic induction adjusting magnetic flux along the periphery, and the magnetic separation units are electrically connected with the controller to realize signal interaction.
Further, the magnetic flux dynamic adjusting mechanism comprises a magnetic separation proximity switch and a demagnetization proximity switch, wherein the magnetic separation proximity switch is arranged on the lower peripheral side of the magnetic separation barrel and is close to one side of the discharge box, the magnetic separation proximity switch is positioned at the top opening of the magnetic separation groove body, and the demagnetization proximity switch is arranged on the upper peripheral side of the magnetic separation barrel and is close to one side of the discharge box; the magnetic separation proximity switch and the demagnetizing proximity switch are electrically connected with the controller so as to realize signal interaction.
The magnetic separation units are internally provided with the identifiers, the identifiers are electrically connected with the controller to realize signal interaction, and the identifiers are used for distinguishing different magnetic separation units, so that the controller can conveniently and accurately regulate and control the magnetic flux of the corresponding magnetic separation units.
Still further, magnetic flux dynamic adjustment mechanism includes the monitoring camera, the monitoring camera with the controller electricity is connected in order to realize signal interaction, the monitoring camera orientation in the magnetic separation cell body with particle between the magnetic separation section of thick bamboo for the surplus of monitoring particle is in order to feed back to the controller.
Still further, the butt has the scraper blade ware on the magnetic separation section of thick bamboo, and the scraper blade ware is close to the discharging case and is located the discharging case upside for scrape the particle that does not demagnetize so that it gets into the discharging case.
Further, the magnetic separator is also led out and provided with a liquid level meter for displaying the liquid level in the magnetic separation tank body.
Further, a vibrator is arranged on the discharge box and used for vibrating the discharge box so that particles can be smoothly discharged from the discharge box.
The invention also provides a magnetic flux dynamic adjustment method, which comprises the following steps:
s1, feeding the mixed slurry into a magnetic separator through a feeding pipeline;
s2, rotating the magnetic separation cylinder, generating a magnetic field and gradually increasing the magnetic field when the magnetic separation unit rotates to the magnetic separation proximity switch, adsorbing particles on the surface of the corresponding magnetic separation unit, and enabling the magnetic flux to be formed by a real-time variance sigma of a preset magnetic flux attenuation curve T Adjusting;
s3, when the magnetic separation unit is switched to the demagnetizing proximity switch, the magnetic field is closed to demagnetize, and the magnetic flux is demagnetized by the real-time variance sigma of a preset magnetic flux attenuation curve T Adjusting; the particles gradually fall off and are thrown into the discharge box due to inertia generated by the rotation of the magnetic separation barrel.
Further, the real-time variance of the preset magnetic flux decay curve in the step S2 and the step S3 isPreset time T per interval 1 Performing curve adjustment once, and->Is T 1 Curve variance before time; the monitoring camera acquires a particle remaining amount accumulation image, and image analysis is carried out by the controller to obtain the real-time accumulation height H of particles T ，/>Is T 1 Particle deposition height before time.
Further, after the magnetic separation unit in the step S5 is turned to the magnetic separation proximity switch, the magnetic separation unit is turned for 30 degrees again, and the magnetic flux of the magnetic separation unit reaches the maximum.
(III) beneficial effects
Compared with the prior art, the invention has the beneficial effects that:
in the existing magnetic separation system, the magnetic flux of a magnetic separation cylinder is solid, the magnetic separation capacity of a magnetic separator cannot be matched with the particle quantity in a magnetic separation tank body, and blockage can be caused or excessive energy consumption can be caused; the magnetic separation system can be used for self-adaptively and dynamically adjusting magnetic flux based on the particle accumulation residual quantity, meets the magnetic separation requirements of working conditions such as different layers, discharge capacity, particle concentration and the like to achieve optimal working efficiency, ensures stable operation, can avoid excessive energy consumption, improves economic benefit, and enhances the applicability and economy of the magnetic separation system.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a front view of the magnetic separator of the present invention;
FIG. 3 is a side view of the magnetic separator of the present invention;
FIG. 4 is a functional block diagram of the present invention;
reference numerals illustrate: 1-a feeding pipeline; 4-magnetic separator; 41-magnetic separation cylinder; 411-magnetic separation unit; 412-an identifier; 42-vibrator; 43-a discharge box; 44-magnetic separation groove body; 45-frames; 46-feeding box; 47-speed reducer; 48-an electric motor; 49-scraper; 61-magnetic separation proximity switch; 62-demagnetizing proximity switch; 63-monitoring a camera; 8-level gauge.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-4, the present invention provides a magnetic flux dynamic adjustment system and method for particle impact drilling.
As shown in fig. 1 to 3, the invention provides a magnetic flux dynamic regulation system for particle impact drilling, which comprises a feeding pipeline 1 and a magnetic separator 4, wherein the feeding pipeline 1 is communicated with the magnetic separator 4; the magnetic separator 4 comprises a frame 45, a magnetic separation tank body 44, a magnetic separation barrel 41, a feeding box 46 and a discharging box 43, wherein the magnetic separation tank body 44 is arranged on the frame 45, the magnetic separation barrel 41 is arranged in the magnetic separation tank body 44 and is used for carrying out magnetic separation treatment on mixed slurry, the feeding box 46 and the discharging box 43 are arranged on the frame 45 and are arranged on two sides of the magnetic separation tank body 44, the feeding box 46 is communicated with the magnetic separation tank body 44 to convey mixed slurry into the magnetic separation tank body 44, and the discharging box 43 is used for receiving particles carried out by the magnetic separation barrel 41. The frame 45 is also provided with a speed reducer 47 and a motor 48 which are mutually linked with the magnetic separation cylinder 41 to drive the magnetic separation cylinder 41 to rotate.
Referring to fig. 1 and 4, the magnetic separator further includes a magnetic flux dynamic adjustment mechanism and a controller, the magnetic flux dynamic adjustment mechanism is disposed on the magnetic separator 4, the controller is electrically connected with the magnetic flux dynamic adjustment mechanism to implement signal interaction, the magnetic flux dynamic adjustment mechanism is used for monitoring the rotation condition of the magnetic separation cylinder 41 and the particle remaining amount in the magnetic separation tank 44, and the controller is used for controlling the magnetic flux of the magnetic separation cylinder 41 to keep matching with the particle remaining amount.
The magnetic flux dynamic adjustment mechanism adjusts the magnetic flux of the magnetic separation cylinder 41 to coordinate the magnetic field intensity to match the residual particle amount entering the magnetic separation tank 44, specifically, if the particle residual amount is too large, the magnetic field intensity is increased, and if the particle residual amount is small, the magnetic field intensity is reduced or unchanged. In particular, because the characteristics of concentration, density, fluidity and the like in the mixed slurry are variable, the magnetic flux of the magnetic separation cylinder of the conventional magnetic separator 4 is mostly fixed, and even though the magnetic separation cylinder 41 is partitioned, the magnetic flux of each region is also fixed, so that the method cannot be suitable for processing the mixed slurry with different particle ratios; when the particles in the mixed slurry are too few, the working efficiency of the magnetic separation cylinder 41 is too high and exceeds the magnetic field strength required by the particles in the mixed slurry, so that the magnetic separation efficiency is wasted; when the particles in the mixed slurry are too many, the working efficiency of the magnetic separation cylinder 41 cannot meet the magnetic separation requirement, all the particles cannot be separated, the particles which are not separated and magnetically separated are accumulated in the magnetic separation groove 44, the drilling fluid discharge pipeline can be blocked, and even the magnetic separation cylinder 41 is blocked, so that the magnetic separation work of the whole system is affected.
Referring to fig. 1, the magnetic separation drum 41 is provided with a plurality of magnetic separation units 411 for adjusting magnetic flux based on electromagnetic induction along the circumferential side, and the magnetic separation units 411 are electrically connected with the controller to realize signal interaction. The magnetic separator 4 is based on the principle of electromagnetic induction, and the magnetic separation unit 411 has a magnetic force in the energized state, and the magnitude of the generated magnetic field or the magnitude of the magnetic force is determined by the magnitude of the passing current, and different combinations of magnetic fields can be generated. The selection principle of the magnetic separation unit 411 is as follows: the magnetic flux is adjustable between 0 and 3000GS, and the resolution is better than 100GS. In this embodiment, the magnetic separation units 411 are preferably eight, but may be other numbers and are all within the scope of the present invention.
As shown in fig. 1 to 3, the magnetic flux dynamic adjustment mechanism includes a magnetic separation proximity switch 61 and a demagnetizing proximity switch 62, the magnetic separation proximity switch 61 is disposed on the lower peripheral side of the magnetic separation drum 41 and is close to the discharge box 43, the magnetic separation proximity switch 61 is disposed at the top opening of the magnetic separation tank 44, and the demagnetizing proximity switch 62 is disposed on the upper peripheral side of the magnetic separation drum 41 and is close to the discharge box 43; the magnetic separation proximity switch 61 and the demagnetizing proximity switch 62 are electrically connected with the controller to realize signal interaction.
The magnetic separation units 411 are provided with identifiers 412, the identifiers 412 are electrically connected with the controller to realize signal interaction, and the identifiers 412 are used for sensing the magnetic separation proximity switch 61 and the demagnetizing proximity switch 62 to feed back to the controller to regulate and control the magnetic flux of the magnetic separation units 411.
When approaching the magnetic separation proximity switch 61 and the demagnetizing proximity switch 62, the magnetic separation unit 411 sends signals to the magnetic separation proximity switch 61 and the demagnetizing proximity switch 62 and feeds the signals back to the controller. As shown in fig. 1 and 3, when the magnetic separation unit 411 is switched to the magnetic separation proximity switch 61, the magnetic separation proximity switch 61 feeds back a signal to the controller, the controller controls the signal fed back by the identifier of the magnetic separation unit 411 to accurately determine which magnetic separation unit 411 is, and controls a circuit in the magnetic separation unit 411 to be electrified to generate a magnetic field, the magnetic flux gradually increases from 0, magnetic separation is started on particles, and the particles are adsorbed on the surface of the magnetic separation cylinder 41; then, the magnetic separation unit 411 rotates in the middle of the magnetic separation tank 44 to magnetically separate and adsorb the main stacking position of the particles, the magnetic separation unit 411 adsorbs the particles to rotate through the top of the magnetic separation cylinder 41, and in the process, the magnetic flux in the magnetic separation unit 411 gradually decays; when the magnetic separation unit 411 is turned to the demagnetizing proximity switch 62, the demagnetizing proximity switch 62 feeds back a signal to the controller, the controller controls no current to flow to the circuit in the magnetic separation unit 411, the magnetic flux is 0, the magnetic field disappears, the particles start to demagnetize, and the particles are thrown into and out of the feed box 43 due to inertia of the magnetic separation cylinder 41 during rotation.
The existing magnetic separator has the defects that the magnetic separation cylinder always has a magnetic field, a certain amount of magnetic force exists on particles, and the particles are seriously agglomerated due to the magnetic force, so that magnetic clusters are formed. Compared with the existing magnetic separator, the magnetic separator has the advantages that the particles are required to be demagnetized after magnetic separation, and a special demagnetizer is required to be installed. The magnetic flux of the magnetic separation unit 411 is reduced to 0, so that the magnetic separation barrel 41 is not magnetic, particles fall off from the magnetic separation barrel 41, the particles are not provided with magnetic force or can have trace magnetic force, small magnetic clusters with trace magnetic force can be left, the particles fall on the shell of the discharge box 43 to be separated, and the problem of particle agglomeration can be avoided. Therefore, the invention does not need to arrange a demagnetizer at the follow-up of the magnetic separator 4, saves cost, reduces working procedures and improves the whole demagnetizing efficiency.
Referring to fig. 1 and 3, the magnetic flux dynamic adjustment mechanism includes a monitoring camera 63, the monitoring camera 63 is electrically connected with the controller to implement signal interaction, the monitoring camera 63 faces the particles between the magnetic separation tank 44 and the magnetic separation drum 41, and is used for monitoring the residual quantity of the particles to feed back to the controller. The monitoring camera 63 transmits the photographed image to the controller, obtains the remaining amount of particles from the image analysis, and adjusts the magnetic flux of the magnetic separation unit 411 according to the remaining amount of particles. Specifically, if the accumulation amount of the residual particles is large, the internal circuit current of the magnetic separation unit 411 is increased, the magnetic flux is increased, more particles are magnetically separated and adsorbed, and the excessive accumulation of the particles is avoided to block the magnetic separation tank 44; otherwise, if the accumulation amount of the residual particles is small, the internal circuit current of the magnetic separation unit 411 can be reduced, the magnetic flux is reduced, the adsorption amount of the particles is reduced, the particle amount in the magnetic separation tank 44 is in a proper stable range, the energy consumption of the magnetic separator is reduced, and the economical efficiency of the whole magnetic separation system is improved.
Referring to fig. 2 and 3, preferably, the magnetic separation drum 41 is abutted with a scraper 49, and the scraper 49 is near the discharge bin 43 and located on the upper side of the discharge bin 43, and is used for scraping non-demagnetized particles so as to enter the discharge bin 43. Since even if the magnetic flux of the magnetic separation unit 411 becomes 0, the residual minute amount of magnetic force on the particles becomes small magnetic clusters and adheres to the magnetic separation unit 411, when the magnetic separation unit 411 rotates to the scraper 49, the magnetic clusters are scraped off by the scraper 49 and fall into the discharge bin 43.
Further improved, as shown in fig. 1, the magnetic separator 4 is further led out and provided with a liquid level meter 8 for displaying the liquid level in the magnetic separation tank 44, so that an operator can observe the liquid level change more intuitively.
Further, as shown in fig. 2, a vibrator 42 is provided on the discharge box 43 to vibrate the discharge box 43 so that particles are smoothly discharged from the discharge box 43.
The invention also provides a magnetic flux dynamic adjustment method, which comprises the following specific steps:
s1, feeding the mixed slurry into a magnetic separator 4 through a feeding pipeline 1;
s2, rotating the magnetic separation cylinder 41, generating a magnetic field and gradually increasing the magnetic field when the magnetic separation unit 411 rotates to the magnetic separation proximity switch 61, adsorbing particles on the surface of the corresponding magnetic separation unit 411, and enabling the magnetic flux to be obtained by the real-time variance sigma of a preset magnetic flux attenuation curve T Adjusting;
s3, when the magnetic separation unit 411 is switched to the demagnetizing proximity switch 62, the magnetic field is closed to demagnetize, and the magnetic flux is demagnetized by the real-time variance sigma of the preset magnetic flux attenuation curve T Adjusting; the particles gradually fall off and are thrown into the discharge bin 43 due to inertia caused by the rotation of the magnetic separation drum 41.
The real-time variance of the preset magnetic flux attenuation curve in the step S2 and the step S3 is thatPreset time T per interval 1 Performing curve adjustment once, and->Is T 1 Curve variance before time; the monitoring camera 63 acquires a particle remaining amount accumulation image, and image analysis is performed by the controller to obtain a real-time accumulation height H of particles T ，/>Is T 1 Particle deposition height before time. The magnetic separation unit 411 is switched from the magnetic separation proximity switch 61 to the demagnetization proximity switch 62, and the decay curve of the magnetic flux of the magnetic separation unit 411 approximates a normal distribution curve, increasing first and then decreasing. Further, it is defined that by modifying the magnetic flux decay curve, after the magnetic separation unit 411 rotates to the magnetic separation proximity switch 61 in the step S2, the magnetic flux reaches the maximum by rotating by 30 °, and the magnetic separation unit 411 is located at the position of the maximum particle accumulation, so that the magnetic separation adsorption is most suitable for the particles.
Claims (10)
1. The magnetic flux dynamic regulation method is characterized in that a magnetic flux dynamic regulation system for particle impact drilling is adopted, and the regulation system comprises a feeding pipeline (1), a magnetic separator (4), a magnetic flux dynamic regulation mechanism and a controller;
the feeding pipeline (1) is communicated with the magnetic separator (4); the magnetic separator (4) comprises a magnetic separation cylinder (41), a discharge box (43) and a magnetic separation tank body (44), wherein the magnetic separation cylinder (41) is positioned in the magnetic separation tank body (44) and is used for carrying out magnetic separation treatment on the mixed slurry; the magnetic separation cylinder (41) is provided with a plurality of magnetic separation units (411) for adjusting magnetic flux based on electromagnetic induction along the periphery, and the discharge box (43) is used for receiving particles carried out by the magnetic separation cylinder (41);
the magnetic flux dynamic adjusting mechanism is arranged on the magnetic separator (4) and comprises a magnetic separation proximity switch (61) and a demagnetization proximity switch (62), and the magnetic separation proximity switch (61) and the demagnetization proximity switch (62) are electrically connected with a controller to realize signal interaction; the magnetic flux dynamic adjusting mechanism is used for monitoring the rotation condition of the magnetic separation barrel (41) and the particle residual quantity in the magnetic separation groove body (44); the controller is used for controlling the magnetic flux of the magnetic separation barrel (41) to be matched with the residual quantity of the particles, namely: if the accumulation amount of the residual particles is large, the current of the internal circuit of the magnetic separation unit is increased, and the magnetic flux is increased; when the residual particle accumulation amount is small, the internal circuit current of the magnetic separation unit (411) can be reduced, and the magnetic flux can be reduced;
the adjusting method comprises the following steps:
s1, feeding the mixed slurry into a magnetic separator (4) through a feeding pipeline (1);
s2, rotating the magnetic separation cylinder (41), generating a magnetic field and gradually increasing the magnetic field when the magnetic separation unit (411) rotates to the magnetic separation proximity switch (61), adsorbing particles on the surface of the corresponding magnetic separation unit (411), and enabling the magnetic flux to be obtained by presetting the real-time variance of the magnetic flux attenuation curveAdjusting;
s3, when the magnetic separation unit (411) is turned to the demagnetizing proximity switch (62), the magnetic field is closed to demagnetize, and the magnetic flux is demagnetized by the real-time variance of a preset magnetic flux attenuation curveAdjusting; the particles gradually fall off and are thrown into a discharge box (43) due to inertia generated by rotation of the magnetic separation barrel (41).
2. A method of dynamic adjustment of magnetic flux as defined in claim 1, wherein: in the magnetic flux dynamic regulation system for particle impact drilling, the magnetic separator (4) also comprises a frame (45) and a feeding box (46); the magnetic separation tank body (44) is arranged on the frame (45), the feeding box (46) and the discharging box (43) are arranged on the frame (45) and are positioned on two sides of the magnetic separation tank body (44), and the feeding box (46) is communicated with the magnetic separation tank body (44) to convey mixed slurry into the magnetic separation tank body (44).
3. A method of dynamic adjustment of magnetic flux as defined in claim 2, wherein: in the magnetic flux dynamic adjustment system for particle impact drilling, the magnetic separation proximity switch (61) is arranged on the lower circumferential side of the magnetic separation barrel (41) and is close to one side of the discharge box (43), the magnetic separation proximity switch (61) is positioned at the top opening of the magnetic separation groove body (44), and the demagnetizing proximity switch (62) is positioned on the upper circumferential side of the magnetic separation barrel (41) and is close to one side of the discharge box (43).
4. A method of dynamic adjustment of magnetic flux as defined in claim 2, wherein: in the magnetic flux dynamic adjustment system for particle impact drilling, the magnetic separation units (411) are internally provided with the identifiers (412), the identifiers (412) are electrically connected with the controller to realize signal interaction, and the identifiers (412) are used for distinguishing different magnetic separation units (411), so that the controller can accurately regulate and control the magnetic flux of the corresponding magnetic separation units (411).
5. A method of dynamic adjustment of magnetic flux as defined in claim 2, wherein: in the magnetic flux dynamic regulation system for particle impact drilling, the magnetic flux dynamic regulation mechanism comprises a monitoring camera (63), the monitoring camera (63) is electrically connected with the controller to realize signal interaction, the monitoring camera (63) faces particles between the magnetic separation groove body (44) and the magnetic separation barrel (41) and is used for monitoring the residual quantity of the particles to feed back to the controller.
6. A method of dynamic adjustment of magnetic flux as defined in claim 5, wherein: the real-time variance of the preset magnetic flux attenuation curve in the step S2 and the step S3 is thatEvery interval is preset with time +>The curve adjustment is carried out for one time,is->Curve variance before time; the monitoring camera (63) acquires a particle remaining amount accumulation image, and the real-time accumulation height of the particles is obtained by image analysis through the controller>，/>Is->Particle deposition height before time.
7. A method of dynamic adjustment of magnetic flux as defined in claim 2, wherein: in the magnetic flux dynamic regulation system for particle impact drilling, the magnetic separation barrel (41) is abutted with the scraper device (49), and the scraper device (49) is close to the discharging box (43) and is positioned on the upper side of the discharging box (43) and used for scraping non-demagnetized particles so as to enable the particles to enter the discharging box (43).
8. A method of dynamic adjustment of magnetic flux as defined in claim 2, wherein: in the magnetic flux dynamic regulation system for particle impact drilling, the magnetic separator (4) is also led out and provided with a liquid level meter (8) for displaying the liquid level in the magnetic separation tank body (44).
9. A method of dynamic adjustment of magnetic flux as defined in claim 2, wherein: in the magnetic flux dynamic regulation system for particle impact drilling, a vibrator (42) is arranged on the discharge box (43) and is used for vibrating the discharge box (43) so that particles can be smoothly discharged from the discharge box (43).
10. The method for dynamic adjustment of magnetic flux as defined in claim 1, wherein: and in the step S2, after the magnetic separation unit (411) rotates to the magnetic separation proximity switch (61), the magnetic separation unit rotates for 30 degrees again, and the magnetic flux reaches the maximum.
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| CN116328941B (en) * | 2023-05-29 | 2023-07-28 | 四川省川机工程技术有限公司 | Magnetic field instant adjusting system and method based on production process monitoring |
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