Magnetic suspension dispersing device for blending polymer drag reducer and use method

Abstract

The invention provides a magnetic suspension dispersing device for blending a polymer drag reducer and a use method. A supporting body II is installed on a base, a supporting body I is installed on the supporting body II, a suspension electromagnet is installed in the base, a rotating shaft is rotatably installed in the supporting body II, a permanent magnet is installed at the bottom of the rotating shaft, and the suspension electromagnet is located below the rotating shaft. The magnetic rotating rotor is installed on the rotating shaft, the magnetic rotating stator is installed in the supporting body II and arranged on the outer side of the magnetic rotating rotor in a surrounding mode, the supporting shaft is connected with the rotating shaft, and the dispersing stator and the electromagnet stator are both installed in the supporting body I. The magnetic dispersing rotor is connected with the supporting shaft. The magnetic dispersion rotor is arranged on the outer side of the dispersion stator in a surrounding mode, the annular permanent magnet is arranged on the outer side of the magnetic dispersion rotor in a sleeving mode, and the electromagnet stator is arranged on the outer side of the annular permanent magnet in a surrounding mode.

Description

Technical Field

[0001] The invention relates to the technical field of polymer mixing equipment used in petroleum exploitation, and in particular to a magnetic suspension dispersing device for mixing a polymer drag reducer and a use method thereof. Background Art

[0002] Polymer powders have been widely used in the oil recovery and flooding fields. In recent years, they have been put into use as an excellent fracturing fluid drag reducer at fracturing sites. At present, polymer mixing devices with high-speed shear technology as the core process of rapid mixing have gradually matured. This type of technology uses a motor as a power source, and uses a pulley drive to make the dispersion main shaft rotate at high speed, driving the rotor on the main shaft to rotate synchronously at high speed. The rotor and the stator are matched with a very small gap, so that the material is subjected to high-speed shear grinding when passing through the gap, and is evenly dispersed in a very short time to form a uniform polymer mixture.

[0003] However, with the large-scale application of polymer drag reducers, the demand for equipment mixing capacity and mixing displacement is increasing. The mixing equipment needs to increase the mixing displacement and mixing capacity of the equipment by increasing the size of the rotor and the stator, while still maintaining a high processing accuracy. This is a big challenge for current mechanical processing. It is very easy for coaxiality to change during high-speed rotation, causing the gap to become smaller and leading to damage between the rotor teeth and the stator teeth due to collision. At the same time, due to the low efficiency of the motor-pulley transmission, the increase in the mixing volume of the equipment will also lead to higher and higher electrical power configuration of the equipment, greatly increasing the threshold for equipment use, and making it gradually difficult to meet the application conditions. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a magnetic suspension dispersion device and a use method for mixing a polymer drag reducer in view of the deficiencies of the prior art.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A magnetic suspension dispersion device for polymer drag reducer mixing, comprising: a base, a suspension electromagnet, a rotating shaft, a support body II, a magnetic rotating stator, a magnetic rotating rotor, a support body I, a dispersion stator, a magnetic dispersion rotor, an annular permanent magnet, a support shaft and an electromagnet stator, wherein the support body II is installed on the base, the support body I is installed on the support body II, the suspension electromagnet is installed in the base, the rotating shaft is rotatably installed in the support body II, a permanent magnet is installed at the bottom of the rotating shaft, and the suspension electromagnet Located below the rotating shaft, the magnetic rotating rotor is installed on the rotating shaft, the magnetic rotating stator is installed in the support body II, the magnetic rotating stator is arranged around the outside of the magnetic rotating rotor, the support shaft is connected to the rotating shaft, the dispersed stator and the electromagnet stator are both installed in the support body I, the magnetic dispersed rotor is connected to the support shaft, the magnetic dispersed rotor is arranged around the outside of the dispersed stator, the annular permanent magnet is sleeved on the outside of the magnetic dispersed rotor, and the electromagnet stator is arranged around the outside of the annular permanent magnet.

[0006] The beneficial effects of the technical solution of the present invention are: based on the principle of magnetic suspension technology, the precise control and stable operation of the stator and rotor of the magnetic suspension dispersion device under high-speed rotation are realized, and the high-speed shear dispersion and rapid mixing of the polymer drag reducer are realized. It breaks through the high-demand processing technology problem caused by the increase in volume, and breaks through the problem of uneven control of the gap between the rotor and the stator during high-speed rotation. Through electromagnetic direct drive, the energy conversion and transmission efficiency is improved, and the high speed limit brought by traditional mechanical transmission is avoided, so that the mixing process technology has greater potential. The technical process of using the high-speed rotation of the stator and rotor for rapid dispersion is retained, and the precise gap control and high-speed operation of the rotor and stator are creatively realized by magnetic suspension technology, and the rotor height control based on magnetic suspension is realized, so that the operation and braking of the rotor can be fully controlled. The device has no physical contact, which can avoid the heating and sealing problems of traditional shaft transmission, reduce energy loss, and does not require lubrication, reducing maintenance costs and material pollution problems. It has high-precision gap control capabilities, more stable rotor operation, and more outstanding fine dispersion capabilities.

[0007] Furthermore, an upper cover is installed on the top of the dispersion stator, the magnetic dispersion rotor is a disc structure, dispersion teeth are installed on the magnetic dispersion rotor, the annular permanent magnet is coaxially arranged with the magnetic dispersion rotor, a limit ring is installed at the bottom of the magnetic dispersion rotor, the bottom of the annular permanent magnet is connected to the limit ring, a discharge rotor is installed at the bottom of the support shaft through a keyway structure, a discharge port is provided on the support body I, the discharge rotor is adjacent to the discharge port, the support shaft and the rotating shaft are connected by hexagonal slot inlay, the magnetic dispersion rotor is connected to the top of the support shaft through a keyway structure, and the magnetic rotating rotor is installed on the rotating shaft through a keyway structure; the rotating shaft is rotatably installed in the support body II through a mechanical seal.

[0008] The beneficial effects of adopting the above further technical solution are: the setting of the upper cover facilitates the placement of materials. The magnetic dispersion rotor is equipped with dispersion teeth, which facilitates the dispersion effect of the dispersion stator and the magnetic dispersion rotor through high-speed shearing and grinding to form a uniform mixed liquid. The setting of the limit ring facilitates the annular permanent magnet to be sleeved on the magnetic dispersion rotor. The setting of the discharge rotor facilitates the discharge of the mixed liquid from the support body I. The setting of the mechanical seal facilitates the sealed rotation connection between the rotating shaft and the support body II, thereby improving the sealing performance.

[0009] Furthermore, a heat dissipation device is installed in the support body I; a control box is installed on the outer side of the support body II, and the suspension electromagnet, the magnetic rotating stator and the electromagnet stator are all connected to the control box.

[0010] The beneficial effects of adopting the above further technical solution are: the control box is arranged outside the support body II to provide a suitable driving current and execute the control algorithm. Automation is improved. A heat sink is installed in the support body I to facilitate heat dissipation, improve heat dissipation efficiency, and improve the stability and reliability of the magnetic suspension dispersion device.

[0011] Furthermore, the heat dissipation device includes: a heat exchange plate and a liquid delivery pipe, a heat dissipation pipe is installed on the surface of the heat exchange plate, the heat dissipation pipe is connected to the liquid delivery pipe, the heat exchange plate is installed on the outside of the electromagnet stator, and the liquid delivery pipe is connected to a coolant circulation device.

[0012] The beneficial effect of adopting the above further technical solution is that the arrangement of the heat exchange plate and the liquid delivery pipe facilitates liquid cooling and heat dissipation, and facilitates the installation and maintenance of the heat dissipation device.

[0013] Furthermore, a power amplifier, a cooling fan and a microprocessor are provided inside the control box, the cooling fan is located outside the power amplifier, the power amplifier is connected to the microprocessor, and the suspension electromagnet, the magnetic rotating stator and the electromagnet stator are all connected to the power amplifier.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are: the microprocessor analyzes the feedback information of the sensor device and sends an execution instruction, the suspended electromagnet performs high-precision position control on the rotor, and realizes precise clearance matching between the stator and rotor and spatial height control of the rotor. The driving current is generated by the rotating electromagnet, and the rotor rotates at a preset speed. At the same time, the sensor device monitors the feedback in real time, and the entire device can be accurately adjusted in real time.

[0015] Furthermore, there are multiple electromagnet stators, and multiple compartments for installing the electromagnet stators are evenly distributed in the support body I, and the multiple electromagnet stators are installed in the multiple compartments in a one-to-one correspondence.

[0016] The beneficial effect of adopting the above further technical solution is that the multiple electromagnet stators are installed in the multiple compartments in a one-to-one correspondence, which prevents the electromagnet stators from shaking and facilitates the installation and maintenance of the electromagnet stators.

[0017] Furthermore, a position sensor is installed in the support body II, a rotation speed sensor is installed in the support body I, and the rotation speed sensor is adjacent to the middle of the support shaft.

[0018] The beneficial effect of adopting the above further technical solution is: the position sensor is placed on the inner wall of the support body II to monitor the bottom position height of the rotating shaft. The speed sensor corresponds to the middle of the support shaft to monitor the speed of the support shaft.

[0019] In addition, the present invention also provides a method for using a magnetic suspension dispersion device for mixing a polymer drag reducer. Based on any one of the magnetic suspension dispersion devices for mixing a polymer drag reducer described above, the method for using the magnetic suspension dispersion device for mixing a polymer drag reducer includes: S1. The magnetic field generated by the suspended electromagnet acts on the permanent magnet of the rotating shaft, so that the rotating shaft pushes the support shaft and the magnetic dispersion rotor to reach a preset height; S2. The magnetic field generated by the magnetic rotating stator acts on the magnetic rotating rotor, so that the magnetic rotating rotor drives the support shaft and the magnetic dispersion rotor to reach a preset speed; S3. The magnetic field generated by the electromagnet stator acts on the annular permanent magnet, so that the magnetic dispersion rotor is in the axial center position under the action of the magnetic field, thereby stabilizing the gap between the dispersion stator and the magnetic dispersion rotor.

[0020] The beneficial effects of the technical solution of the present invention are as follows: after the device is powered, the control box sends a preset execution instruction to the suspension electromagnet and the electromagnet stator, the magnetic field of the suspension electromagnet acts on the bottom permanent magnet of the rotating shaft, the rotating shaft is suspended by the magnetic force, the magnetic dispersion rotor is suspended to a preset height, and the electromagnet stator acts on the annular permanent magnet of the magnetic dispersion rotor, and the magnetic dispersion rotor is suspended to a preset radial center position. Based on the principle of magnetic suspension technology, the precise control and stable operation of the stator and rotor of the magnetic suspension dispersion device under high-speed rotation are realized, and the high-speed shear dispersion and rapid mixing of the polymer drag reducer are realized. The high-requirement processing technology problem caused by the increase in volume is broken through, and the problem of uneven control of the gap between the rotor and the stator during high-speed rotation is broken through. In addition, the energy conversion and transmission efficiency is improved through electromagnetic direct drive, and the high speed limit caused by traditional mechanical transmission is avoided, so that the mixing process technology has greater potential. The technical process of rapid dispersion using high-speed rotation of the stator and rotor is retained, and the precise gap control and high-speed operation of the rotor and the stator are creatively realized by magnetic suspension technology, and the rotor height control based on magnetic suspension is realized, so that the rotor operation and braking can be fully controlled. The device has no physical contact, which can avoid the heating and sealing problems of traditional shaft transmission, reduce energy loss, and does not require lubrication, reducing maintenance costs and material pollution problems. It has high-precision gap control capabilities, the rotor runs more stably, and the fine dispersion ability is more outstanding.

[0021] Further, step S1 includes: S11, issuing a control command to the suspension electromagnet through the microprocessor in the control box, so that the suspension electromagnet generates a magnetic field; S12, the magnetic field generated by the suspension electromagnet acts on the permanent magnet of the rotating shaft, so that the rotating shaft pushes the support shaft and the magnetic dispersion rotor to reach a preset height; S13, synchronously monitoring the height position of the rotating shaft through the position sensor, and feeding back the height position of the rotating shaft to the microprocessor, so that the magnetic field of the suspension electromagnet remains stable; step S2 includes: S21, after the height is stable, issuing a control command to the power amplifier through the microprocessor, so that the power amplifier outputs current to the magnetic rotating stator; S22, the magnetic field generated by the magnetic rotating stator acts on the magnetic rotating rotor, so that the magnetic rotating rotor drives the support shaft and the magnetic dispersion rotor. The rotor reaches a preset speed; S23, the speed of the support shaft is collected through a speed sensor, and the speed of the support shaft is fed back to the microprocessor to keep the speed of the magnetic dispersion rotor stable; step S3 includes: S31, when the magnetic suspension dispersion device is running, a control instruction is sent to the electromagnet stator through the microprocessor, so that the electromagnet stator generates a magnetic field; S32, the magnetic field generated by the electromagnet stator acts on the annular permanent magnet, so that the magnetic dispersion rotor is in the axial position under the action of the magnetic field, thereby stabilizing the gap between the dispersion stator and the magnetic dispersion rotor; S33, external cooling water is transported to the heat exchange plate through a liquid delivery pipe to perform heat exchange on the space where the electromagnet stator is located; S34, the power amplifier and the microprocessor in the control box are cooled by a cooling fan.

[0022] The beneficial effect of adopting the above further technical solution is that the speed sensor and the position sensor monitor the speed of the support shaft and the bottom height of the rotating shaft respectively, and feed the monitoring data back to the microprocessor, and adjust the current of the magnetic stator through the control program to stabilize the suspension and rotation of the rotor. According to the sensor parameters, after determining that the suspension is stable, the microprocessor sends a control instruction to the power amplifier, and the power amplifier supplies an appropriate driving current to the magnetic rotating stator, so that the magnetic rotating stator generates sufficient magnetic force to act on the magnetic rotating rotor, drive the magnetic rotating rotor to rotate at a preset speed, and drive the magnetic dispersion rotor to rotate. After the device is started, under the control of the microprocessor, the heat dissipation device circulates water to absorb heat and cool the electromagnet stator, and the cooling fan rotates to dissipate heat from the power amplifier and the microprocessor.

[0023] Furthermore, after step S3, the following steps are included: S4, after the magnetic suspension dispersion device is started and runs stably, injecting materials through the upper cover; S5, shearing, grinding and dispersing the materials through the dispersion stator and the magnetic dispersion rotor to form a mixed liquid in the support body I; S6, discharging the mixed liquid through the discharge port; S7, after the operation of the magnetic suspension dispersion device is completed, sending control instructions to the suspension electromagnet, the magnetic rotating stator and the electromagnet stator through the microprocessor; S8, reducing the rotation speed of the magnetic dispersion rotor to zero through magnetic field regulation, and falling to the support position of the base along with the rotating shaft through the support shaft.

[0024] The beneficial effect of adopting the above further technical solution is that after the magnetic dispersion rotor reaches the preset speed, the mixed polymer material and the mixed liquid are input from the upper cover, and a uniform mixed liquid is formed through the dispersion action of the dispersion stator and the high-speed shearing and grinding of the magnetic dispersion rotor, and then the mixed liquid is discharged from the support body I through the discharge rotor. After the operation is completed, the power amplifier sends a moderate current to the magnetic rotating stator through the microprocessor according to the sensor feedback signal to brake the magnetic rotating rotor; after the speed sensor feedback speed is zero, the microprocessor sends a reset instruction to the suspension electromagnet and the electromagnet stator, and according to the position sensor signal, the rotating shaft slowly and steadily descends to the landing point, and the operation stops.

[0025] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is one of the structural schematic diagrams of a magnetic suspension dispersion device for mixing polymer drag reducers provided in an embodiment of the present invention.

[0027] Figure 2 The second structural schematic diagram of the magnetic suspension dispersion device for mixing polymer drag reducers provided in an embodiment of the present invention.

[0028] Figure 3 One of the schematic flow charts of the method of using the magnetic suspension dispersion device for mixing polymer drag reducers provided in an embodiment of the present invention.

[0029] Figure 4 The second schematic flow chart of the method of using the magnetic suspension dispersion device for mixing polymer drag reducers provided in an embodiment of the present invention.

[0030] Explanation of the accompanying drawings: 1. base; 2. suspension electromagnet; 3. rotating shaft; 4. support body II; 5. position sensor; 6. magnetic rotating stator; 7. magnetic rotating rotor; 8. mechanical seal; 9. discharge port; 10. support body I; 11. heat exchange plate; 12. liquid delivery pipe; 13. upper cover; 14. dispersion stator; 15. magnetic dispersion rotor; 16. annular permanent magnet; 17. limit key; 18. limit ring; 19. support shaft; 20. control box; 201. power amplifier; 202. cooling fan; 203. microprocessor; 21. speed sensor; 22. electromagnet stator. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention but not to limit the scope of the present invention.

[0032] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a magnetic suspension dispersion device for mixing a polymer drag reducer, comprising: a base 1, a suspension electromagnet 2, a rotating shaft 3, a support body II4, a magnetic rotating stator 6, a magnetic rotating rotor 7, a support body I10, a dispersion stator 14, a magnetic dispersion rotor 15, an annular permanent magnet 16, a support shaft 19 and an electromagnet stator 22, wherein the support body II4 is mounted on the base 1, the support body I10 is mounted on the support body II4, the suspension electromagnet 2 is mounted in the base 1, the rotating shaft 3 is rotatably mounted in the support body II4, a permanent magnet is mounted at the bottom of the rotating shaft 3, and the suspension electromagnet 2 is located at the rotating shaft 3. Below the rotating shaft 3, the magnetic rotating rotor 7 is installed on the rotating shaft 3, the magnetic rotating stator 6 is installed in the supporting body II4, the magnetic rotating stator 6 is arranged around the outside of the magnetic rotating rotor 7, the supporting shaft 19 is connected to the rotating shaft 3, the dispersed stator 14 and the electromagnet stator 22 are both installed in the supporting body I10, the magnetic dispersed rotor 15 is connected to the supporting shaft 19, the magnetic dispersed rotor 15 is arranged around the outside of the dispersed stator 14, the annular permanent magnet 16 is sleeved on the outside of the magnetic dispersed rotor 15, and the electromagnet stator 22 is arranged around the outside of the annular permanent magnet 16.

[0033] The beneficial effects of the technical solution of the present invention are: based on the principle of magnetic suspension technology, the precise control and stable operation of the stator and rotor of the magnetic suspension dispersion device under high-speed rotation are realized, and the high-speed shear dispersion and rapid mixing of the polymer drag reducer are realized. It breaks through the high-demand processing technology problem caused by the increase in volume, and breaks through the problem of uneven control of the gap between the rotor and the stator during high-speed rotation. Through electromagnetic direct drive, the energy conversion and transmission efficiency is improved, and the high speed limit brought by traditional mechanical transmission is avoided, so that the mixing process technology has greater potential. The technical process of using the high-speed rotation of the stator and rotor for rapid dispersion is retained, and the precise gap control and high-speed operation of the rotor and stator are creatively realized by magnetic suspension technology, and the rotor height control based on magnetic suspension is realized, so that the operation and braking of the rotor can be fully controlled. The device has no physical contact, which can avoid the heating and sealing problems of traditional shaft transmission, reduce energy loss, and does not require lubrication, reducing maintenance costs and material pollution problems. It has high-precision gap control capabilities, more stable rotor operation, and more outstanding fine dispersion capabilities.

[0034] The embodiment of the present invention provides a magnetic suspension dispersing device for mixing polymer drag reducers. Based on the principle of magnetic suspension technology, a magnetic suspension dispersing device is creatively proposed to achieve precise control and stable operation of the stator and rotor of the polymer mixing equipment (magnetic suspension dispersing device for mixing polymer drag reducers) under high-speed rotation, breaking through the high-requirement processing technology problem caused by the increase in volume, and greatly improving the energy conversion and transmission efficiency, avoiding the high speed limit caused by traditional mechanical transmission, and making the mixing process technology have greater potential. The present invention retains the technical process of rapid dispersion using high-speed rotation of the stator and rotor, creatively uses magnetic suspension technology to achieve precise gap control and high-speed operation between the rotor and the stator, and realizes rotor height control based on magnetic suspension, so that the rotor operation and braking can be fully controlled.

[0035] like Figure 1 and Figure 2 As shown, further, an upper cover 13 is installed on the top of the dispersion stator 14, the magnetic dispersion rotor 15 is a disc structure, and dispersion teeth are installed on the magnetic dispersion rotor 15. The annular permanent magnet 16 is coaxially arranged with the magnetic dispersion rotor 15, and a limit ring 18 is installed at the bottom of the magnetic dispersion rotor 15. The bottom of the annular permanent magnet 16 is connected to the limit ring 18, and a discharge rotor is installed at the bottom of the support shaft 19 through a keyway structure. A discharge port 9 is provided on the support body I10, and the discharge rotor is adjacent to the discharge port 9. The support shaft 19 is connected to the rotating shaft 3 by a hexagonal slot inlay, and the magnetic dispersion rotor 15 is connected to the top of the support shaft 19 through a keyway structure. The magnetic rotating rotor 7 is installed on the rotating shaft 3 through a keyway structure; the rotating shaft 3 is rotatably installed in the support body II4 through a mechanical seal 8.

[0036] The beneficial effects of adopting the above further technical solution are: the setting of the upper cover facilitates the placement of materials. The magnetic dispersion rotor is equipped with dispersion teeth, which facilitates the dispersion effect of the dispersion stator and the magnetic dispersion rotor through high-speed shearing and grinding to form a uniform mixed liquid. The setting of the limit ring facilitates the annular permanent magnet to be sleeved on the magnetic dispersion rotor. The setting of the discharge rotor facilitates the discharge of the mixed liquid from the support body I. The setting of the mechanical seal facilitates the sealed rotation connection between the rotating shaft and the support body II, thereby improving the sealing performance.

[0037] like Figure 1 and Figure 2 As shown, further, a heat dissipation device is installed in the support body I10; a control box 20 is installed on the outer side of the support body II4, and the suspension electromagnet 2, the magnetic rotating stator 6 and the electromagnet stator 22 are all connected to the control box 20.

[0038] The beneficial effects of adopting the above further technical solution are: the control box is arranged outside the support body II to provide a suitable driving current and execute the control algorithm. Automation is improved. A heat sink is installed in the support body I to facilitate heat dissipation, improve heat dissipation efficiency, and improve the stability and reliability of the magnetic suspension dispersion device.

[0039] like Figure 1 and Figure 2 As shown, further, the heat dissipation device includes: a heat exchange plate 11 and a liquid delivery pipe 12, a heat dissipation pipe is installed on the surface of the heat exchange plate 11, the heat dissipation pipe is connected to the liquid delivery pipe 12, the heat exchange plate 11 is installed on the outside of the electromagnet stator 22, and the liquid delivery pipe 12 is connected to a coolant circulation device.

[0040] The beneficial effect of adopting the above further technical solution is that the arrangement of the heat exchange plate and the liquid delivery pipe facilitates liquid cooling and heat dissipation, and facilitates the installation and maintenance of the heat dissipation device.

[0041] like Figure 1 and Figure 2 As shown, further, a power amplifier 201, a cooling fan 202 and a microprocessor 203 are provided inside the control box 20, the cooling fan 202 is located on the outside of the power amplifier 201, the power amplifier 201 is connected to the microprocessor 203, and the suspension electromagnet 2, the magnetic rotating stator 6 and the electromagnet stator 22 are all connected to the power amplifier 201.

[0042] The beneficial effects of adopting the above-mentioned further technical solution are: the microprocessor analyzes the feedback information of the sensor device and sends an execution instruction, the suspended electromagnet performs high-precision position control on the rotor, and realizes precise clearance matching between the stator and rotor and spatial height control of the rotor. The driving current is generated by the rotating electromagnet, and the rotor rotates at a preset speed. At the same time, the sensor device monitors the feedback in real time, and the entire device can be accurately adjusted in real time.

[0043] like Figure 1 and Figure 2 As shown, further, the number of the electromagnet stators 22 is multiple, and the support body Ⅰ10 is evenly distributed with multiple compartments for installing the electromagnet stators 22, and the multiple electromagnet stators 22 are installed in the multiple compartments in a one-to-one correspondence.

[0044] The beneficial effect of adopting the above further technical solution is that the multiple electromagnet stators are installed in the multiple compartments in a one-to-one correspondence, which prevents the electromagnet stators from shaking and facilitates the installation and maintenance of the electromagnet stators.

[0045] like Figure 1 and Figure 2 As shown, further, a position sensor 5 is installed in the support body II4, and a rotation speed sensor 21 is installed in the support body I10, and the rotation speed sensor 21 is adjacent to the middle of the support shaft 19.

[0046] The beneficial effect of adopting the above further technical solution is: the position sensor is placed on the inner wall of the support body II to monitor the bottom position height of the rotating shaft. The speed sensor corresponds to the middle of the support shaft to monitor the speed of the support shaft.

[0047] like Figure 1 and Figure 2As shown, a magnetic suspension dispersion device for mixing polymer drag reducers provided in an embodiment of the present invention mainly includes: an upper cover 13, a dispersion stator 14, a magnetic dispersion rotor 15, an electromagnet stator 22, a magnetic rotating stator 6, a magnetic rotating rotor 7, a heat dissipation device, a support shaft 19, a rotating shaft 3, a discharge rotor, a magnetic base, a support body I10, a support body II4, and a control box 20. Among them, the upper cover 13 is placed on the upper part of the dispersion stator 14, the dispersion stator 14 is placed on the upper part of the support body I10, the support body I10 is placed on the upper part of the support body II4, and the support body II4 is placed on the lower part of the magnetic base to constitute an external overall structure; the support body I10 and the support body II4 form a dispersion cavity; the magnetic dispersion rotor 15 is connected and fixed to the upper part of the support shaft 19, and the discharge rotor is connected and fixed to the lower part of the support shaft 19, and the whole is in the dispersion cavity; the bottom of the support shaft 19 is connected to the top of the rotating shaft 3 through a hexagonal slot; the electromagnet stator 22 and the heat dissipation device are placed in the support body I10, and the magnetic rotating stator 6 and the magnetic rotating rotor 7 are placed in the support body II4; the control box 20 is arranged on the outside of the support body II4, which is used to provide a suitable driving current and execute the control algorithm.

[0048] The present invention provides a magnetic suspension dispersion device for mixing polymer drag reducers. The device has no physical contact, can avoid the heating and sealing problems of traditional shaft transmission, and reduces energy loss. At the same time, it does not require lubrication, reduces maintenance costs and material pollution problems, has high-precision gap control capability, and the rotor runs more stably and has more outstanding fine dispersion ability.

[0049] Furthermore, the magnetic dispersion rotor 15 is a disc structure with dispersion teeth on the top of the disc, an annular permanent magnet 16 is coaxially installed on the bottom of the disc, fixed by a limit ring 18, and sealed with silicone; the magnetic dispersion rotor 15 is connected and fixed to the upper part of the support shaft 19 through a keyway structure (limit key 17), and the discharge rotor is connected to the lower part of the support shaft 19 through the keyway structure; the bottom of the support shaft 19 is an external hexagonal structure.

[0050] Furthermore, the electromagnet stator 22 is placed in the waterproof sealed space of the support body Ⅰ10. The waterproof sealed space is a cylindrical ring, which is sealed into 6 evenly distributed compartments. The electromagnet stator 22 is divided into 6 groups and placed in the 6 evenly distributed compartments respectively; the inner side of the evenly distributed compartment is waterproofed and sealed with silicone or hard plastic; the height of the waterproof sealed space corresponds to the first step permanent magnet (annular permanent magnet 16) at the bottom of the magnetic dispersion rotor 15.

[0051] Furthermore, the heat dissipation device is composed of a heat exchange plate 11 and a liquid delivery pipe 12. The heat exchange plate 11 is arranged on the surface of the heat exchange plate 11, and the inlet and outlet of the heat exchange pipe are respectively connected to the liquid delivery pipe 12; the heat exchange plate 11 is placed on the outside of the electromagnet stator 22; the liquid delivery pipe 12 extends from the support body Ⅰ10 and is connected to the coolant circulation device; the heat dissipation device materials are all made of non-magnetic materials.

[0052] Furthermore, a rotation speed sensor 21 is installed at the lower part of the waterproof sealed space of the support body Ⅰ10. The rotation speed sensor 21 corresponds to the middle part of the support shaft 19 and monitors the rotation speed of the support shaft 19.

[0053] Furthermore, the top of the rotating shaft 3 is a hexagonal structure, which is connected to the bottom of the support shaft 19; the rotating shaft 3 is connected to the support body Ⅱ4 through a mechanical sealing device (mechanical seal 8), and is coaxial with the support body Ⅱ4; the magnetic rotating rotor 7 is connected and fixed to the lower part of the rotating shaft 3 through a keyway structure, and is located in the annulus of the support body Ⅱ4; a permanent magnet is installed at the bottom of the rotating shaft 3.

[0054] Furthermore, the magnetic rotating stator 6 is placed in a rotating control cabin of the support body II 4 . The rotating control cabin is cylindrical and annular, and the rotating control cabin is in the same height as the magnetic rotating rotor 7 .

[0055] Furthermore, the magnetic base includes a suspension electromagnet 2, a position sensor 5, and a base 1. The base 1 is located at the lower part of the support body II4, and the suspension electromagnet 2 is placed in the middle of the base 1; the position sensor 5 is placed on the inner wall of the support body II4 to monitor the bottom position height of the rotating shaft 3.

[0056] Furthermore, the control box 20 includes a power amplifier 201, a cooling fan 202, and a microprocessor 203. The control box 20 is installed on the outside of the support body II4, the power amplifier 201 and the microprocessor 203 are installed inside the control box 20, and the cooling fan 202 is installed inside the control box 20 and is located outside the power amplifier 201.

[0057] like Figure 4 As shown, in addition, the present invention also provides a method for using a magnetic suspension dispersing device for mixing a polymer drag reducer. Based on any one of the magnetic suspension dispersing devices for mixing a polymer drag reducer described above, the method for using the magnetic suspension dispersing device for mixing a polymer drag reducer includes: S1, the magnetic field generated by the suspended electromagnet acts on the permanent magnet of the rotating shaft, so that the rotating shaft pushes the supporting shaft and the magnetic dispersing rotor to reach a preset height; S2, the magnetic field generated by the magnetic rotating stator acts on the magnetic rotating rotor, so that the magnetic rotating rotor drives the supporting shaft and the magnetic dispersing rotor to reach a preset speed; S3, the magnetic field generated by the electromagnet stator acts on the annular permanent magnet, so that the magnetic dispersing rotor is in the axial position under the action of the magnetic field, thereby stabilizing the gap between the dispersing stator and the magnetic dispersing rotor.

[0058] The beneficial effects of the technical solution of the present invention are as follows: after the device is powered, the control box sends a preset execution instruction to the suspension electromagnet and the electromagnet stator, the magnetic field of the suspension electromagnet acts on the bottom permanent magnet of the rotating shaft, the rotating shaft is suspended by the magnetic force, the magnetic dispersion rotor is suspended to a preset height, and the electromagnet stator acts on the annular permanent magnet of the magnetic dispersion rotor, and the magnetic dispersion rotor is suspended to a preset radial center position. Based on the principle of magnetic suspension technology, the precise control and stable operation of the stator and rotor of the magnetic suspension dispersion device under high-speed rotation are realized, and the high-speed shear dispersion and rapid mixing of the polymer drag reducer are realized. The high-requirement processing technology problem caused by the increase in volume is broken through, and the problem of uneven control of the gap between the rotor and the stator during high-speed rotation is broken through. In addition, the energy conversion and transmission efficiency is improved through electromagnetic direct drive, and the high speed limit caused by traditional mechanical transmission is avoided, so that the mixing process technology has greater potential. The technical process of rapid dispersion using high-speed rotation of the stator and rotor is retained, and the precise gap control and high-speed operation of the rotor and the stator are creatively realized by magnetic suspension technology, and the rotor height control based on magnetic suspension is realized, so that the rotor operation and braking can be fully controlled. The device has no physical contact, which can avoid the heating and sealing problems of traditional shaft transmission, reduce energy loss, and does not require lubrication, reducing maintenance costs and material pollution problems. It has high-precision gap control capabilities, the rotor runs more stably, and the fine dispersion ability is more outstanding.

[0059] The embodiment of the present invention provides a method for using a magnetic suspension dispersion device for mixing a polymer drag reducer, which mainly includes:

[0060] 1. After the device is powered on, the control box 20 sends a preset execution instruction to the suspension electromagnet 2 and the electromagnet stator 22. The magnetic field of the suspension electromagnet 2 acts on the bottom permanent magnet of the rotating shaft 3. The rotating shaft 3 is suspended upward by the magnetic force, and the magnetic dispersion rotor 15 is suspended to a preset height. The electromagnet stator 22 acts on the annular permanent magnet 16 of the magnetic dispersion rotor 15, and the magnetic dispersion rotor 15 is suspended to a preset radial center position.

[0061] 2. The speed sensor 21 and the position sensor 5 monitor the speed of the support shaft 19 and the bottom height of the rotating shaft 3 respectively, and feed the monitoring data back to the microprocessor 203, and adjust the current of the magnetic stator through the control program to stabilize the suspension and rotation of the rotor.

[0062] 3. After determining that the suspension is stable based on the sensor parameters, the microprocessor 203 sends a control instruction to the power amplifier 201, and the power amplifier 201 supplies an appropriate driving current to the magnetic rotating stator 6, so that the magnetic rotating stator 6 generates sufficient magnetic force to act on the magnetic rotating rotor 7, drive the magnetic rotating rotor 7 to rotate at a preset speed, and drive the magnetic dispersion rotor 15 to rotate.

[0063] 4. After the magnetic dispersing rotor 15 reaches the preset speed, the mixed polymer material and the mixed liquid are input from the upper cover 13, and a uniform mixed liquid is formed through the dispersing action of the dispersing stator 14 and the high-speed shearing and grinding of the magnetic dispersing rotor 15, and then the mixed liquid is discharged from the support body I10 through the discharge rotor.

[0064] 5. After the device is started, under the control of the microprocessor 203, the heat dissipation device circulates water to absorb heat and cool the electromagnet stator 22, and the cooling fan 202 rotates to dissipate heat from the power amplifier 201 and the microprocessor 203.

[0065] After the operation is completed, the microprocessor 203 sends a moderate current to the magnetic rotating stator 6 by the power amplifier 201 according to the sensor feedback signal to brake the magnetic rotating rotor 7; after the speed sensor 21 feedbacks that the speed is zero, the microprocessor 203 sends a reset instruction to the suspension electromagnet 2 and the electromagnet stator 22, and according to the signal of the position sensor 5, the rotating shaft 3 slowly and steadily descends to the landing point, and the operation stops.

[0066] The method for using a magnetic suspension dispersing device for polymer drag reducer mixing provided by an embodiment of the present invention can be a control method for a magnetic suspension dispersing device for polymer drag reducer mixing, which is mainly used in the shear dispersion rapid mixing process of polymer drag reducer, and realizes high-speed shear dispersion and rapid mixing of polymer drag reducer based on the principle of magnetic suspension technology. In the present invention, the feedback information of the sensor device is analyzed by the microprocessor 203 and an execution instruction is sent, and the position of the rotor is controlled with high precision by the suspension electromagnet 2, so that the precise clearance fit of the stator and rotor and the spatial height control of the rotor are realized, and the driving current is generated by the rotating electromagnet, so that the rotor rotates at a preset speed, and the sensor device monitors and feedbacks in real time, and the whole device can be accurately adjusted in real time. Through the present invention, the precise control of the gap between the stator and rotor of the polymer mixing equipment under high-speed rotation is realized, and the operation is stable, breaking through the problem of uneven control of the gap between the rotor and the stator during high-speed rotation, and solving the high-precision problem caused by the increase in the volume of the equipment upgrade. In addition, this device (magnetic suspension dispersion device for polymer drag reducer mixing) greatly improves the energy conversion and transmission efficiency through electromagnetic direct drive, avoids the problem of low efficiency of traditional mechanical transmission, breaks through the difficulty of upper speed limit, and makes the mixing process technology have greater improvement potential. The present invention overcomes the existing shortcomings of the polymer drag reducer shear dispersion rapid mixing process, effectively solves the problems of high-precision control of the stator-rotor gap and high-speed operation, and at the same time greatly improves the energy application efficiency, reduces energy loss, improves the level of automatic control, breaks through the existing performance barriers, has a simple technical principle, and increases the development potential of the fracturing fluid drag reducer rapid mixing process.

[0067] Further, step S1 includes: S11, issuing a control command to the suspension electromagnet through the microprocessor in the control box, so that the suspension electromagnet generates a magnetic field; S12, the magnetic field generated by the suspension electromagnet acts on the permanent magnet of the rotating shaft, so that the rotating shaft pushes the support shaft and the magnetic dispersion rotor to reach a preset height; S13, synchronously monitoring the height position of the rotating shaft through the position sensor, and feeding back the height position of the rotating shaft to the microprocessor, so that the magnetic field of the suspension electromagnet remains stable; step S2 includes: S21, after the height is stable, issuing a control command to the power amplifier through the microprocessor, so that the power amplifier outputs current to the magnetic rotating stator; S22, the magnetic field generated by the magnetic rotating stator acts on the magnetic rotating rotor, so that the magnetic rotating rotor drives the support shaft and the magnetic dispersion rotor. The rotor reaches a preset speed; S23, the speed of the support shaft is collected through a speed sensor, and the speed of the support shaft is fed back to the microprocessor to keep the speed of the magnetic dispersion rotor stable; step S3 includes: S31, when the magnetic suspension dispersion device is running, a control instruction is sent to the electromagnet stator through the microprocessor, so that the electromagnet stator generates a magnetic field; S32, the magnetic field generated by the electromagnet stator acts on the annular permanent magnet, so that the magnetic dispersion rotor is in the axial position under the action of the magnetic field, thereby stabilizing the gap between the dispersion stator and the magnetic dispersion rotor; S33, external cooling water is transported to the heat exchange plate through a liquid delivery pipe to perform heat exchange on the space where the electromagnet stator is located; S34, the power amplifier and the microprocessor in the control box are cooled by a cooling fan.

[0068] The beneficial effect of adopting the above further technical solution is that the speed sensor and the position sensor monitor the speed of the support shaft and the bottom height of the rotating shaft respectively, and feed the monitoring data back to the microprocessor, and adjust the current of the magnetic stator through the control program to stabilize the suspension and rotation of the rotor. According to the sensor parameters, after determining that the suspension is stable, the microprocessor sends a control instruction to the power amplifier, and the power amplifier supplies an appropriate driving current to the magnetic rotating stator, so that the magnetic rotating stator generates sufficient magnetic force to act on the magnetic rotating rotor, drive the magnetic rotating rotor to rotate at a preset speed, and drive the magnetic dispersion rotor to rotate. After the device is started, under the control of the microprocessor, the heat dissipation device circulates water to absorb heat and cool the electromagnet stator, and the cooling fan rotates to dissipate heat from the power amplifier and the microprocessor.

[0069] Furthermore, after step S3, the following steps are included: S4, after the magnetic suspension dispersion device is started and runs stably, injecting materials through the upper cover; S5, shearing, grinding and dispersing the materials through the dispersion stator and the magnetic dispersion rotor to form a mixed liquid in the support body I; S6, discharging the mixed liquid through the discharge port; S7, after the operation of the magnetic suspension dispersion device is completed, sending control instructions to the suspension electromagnet, the magnetic rotating stator and the electromagnet stator through the microprocessor; S8, reducing the rotation speed of the magnetic dispersion rotor to zero through magnetic field regulation, and falling to the support position of the base along with the rotating shaft through the support shaft.

[0070] The beneficial effect of adopting the above further technical solution is that after the magnetic dispersion rotor reaches the preset speed, the mixed polymer material and the mixed liquid are input from the upper cover, and a uniform mixed liquid is formed through the dispersion action of the dispersion stator and the high-speed shearing and grinding of the magnetic dispersion rotor, and then the mixed liquid is discharged from the support body I through the discharge rotor. After the operation is completed, the power amplifier sends a moderate current to the magnetic rotating stator through the microprocessor according to the sensor feedback signal to brake the magnetic rotating rotor; after the speed sensor feedback speed is zero, the microprocessor sends a reset instruction to the suspension electromagnet and the electromagnet stator, and according to the position sensor signal, the rotating shaft slowly and steadily descends to the landing point, and the operation stops.

[0071] See attached Figure 2 The present invention provides a magnetic suspension dispersing device for mixing a polymer drag reducer, comprising a base 1, a suspension electromagnet 2, a rotating shaft 3, a support body II 4, a position sensor 5, a magnetic rotating stator 6, a magnetic rotating rotor 7, a mechanical seal 8, a discharge port 9, a support body I 10, a heat exchange plate 11, a liquid delivery pipe 12, an upper cover 13, a dispersing stator 14, a magnetic dispersing rotor 15, an annular permanent magnet 16, a limit key 17, a limit ring 18, a support shaft 19, a control box 20, a power amplifier 201, a cooling fan 202, and a microprocessor 203.

[0072] Combined with Figure 3 How to use it, Figure 3 1. The control box sends a control signal. 2. The suspension electromagnet suspends the rotating shaft, and the magnetic dispersion rotor reaches a preset height. 3. The magnetic rotating stator controls the rotation of the magnetic rotating rotor through the magnetic field, so that the magnetic dispersion rotor reaches a predetermined speed. 4. Magnetic suspension dispersion treatment.

[0073] The heat dissipation device dissipates heat for the corresponding components in step 1 to step 3. The position sensor monitors the position of the rotating shaft in step 2 and feeds back to the control box. The speed sensor monitors the speed of the support shaft in step 3 and feeds back to the control box.

[0074] The embodiment of the present invention is as follows: after the magnetic suspension dispersion device (magnetic suspension dispersion device for mixing polymer drag reducers) is powered on and starts running, the microprocessor 203 in the control box 20 sends a control command to the suspension electromagnet 2 through a control program, so that it generates a magnetic field, and the magnetic field acts on the permanent magnet at the bottom of the rotating shaft 3 to generate a suspension force, so that the rotating shaft 3 moves upward, pushing the support shaft 19 and the magnetic dispersion rotor 15 to a preset height, and the position sensor synchronously monitors the height position of the rotating shaft 3 and provides feedback to the microprocessor 203 to keep the acting magnetic field of the suspension electromagnet 2 stable. After the height is stabilized, the microprocessor 203 sends a control instruction to the power amplifier 201, so that it outputs a specific current into the magnetic rotating stator 6. The magnetic field generated by the magnetic rotating stator 6 acts on the magnetic rotating rotor 7, so that the magnetic rotating rotor 7 rotates and gradually reaches the preset speed. The magnetic dispersion rotor 15 reaches the preset speed through the shaft (support shaft 19). At the same time, the speed sensor 21 collects the speed of the support shaft 19 and feeds it back to the microprocessor 203. The current is controlled through the program of the microprocessor 203 to keep the speed of the magnetic dispersion rotor 15 stable. When the device is running, the microprocessor 203 sends a control instruction to the electromagnet stator 22 to form a magnetic field, which acts on the annular permanent magnet 16, so that the magnetic dispersion rotor 15 is at the axial center position under the action of the magnetic field, and the gap between the dispersion stator 14 and the magnetic dispersion rotor 15 is kept stable. When the device is running, external cooling water is transported to the heat exchange plate 11 through the liquid delivery pipe 12, and heat exchange is performed on the space where the electromagnet stator 22 is located, so that the temperature of the space is kept at a low level. At the same time, the cooling fan 202 continues to run to blow air to cool the power amplifier 201 and the microprocessor 203 in the control box 20. After the device starts and runs stably, the material enters from the upper cover 13, and after shearing, grinding and dispersing treatment at a specific speed by the dispersing stator 14 and the magnetic dispersing rotor 15, a uniform mixed liquid is formed in the support body Ⅰ10, and then discharged from the discharge port 9. After the device operation is completed, the microprocessor 203 sends control instructions to the power amplifier 201, the suspension electromagnet 2, the magnetic rotating stator 6, and the electromagnet stator 22. Through the magnetic field adjustment, the speed of the magnetic dispersing rotor 15 is gradually reduced to zero, and then slowly falls to the support position, the magnetic suspension effect disappears, and the device (magnetic suspension dispersing device for polymer drag reducer mixing) stops operating.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetic suspension dispersing device for mixing polymer drag reducers, characterized in that: include: A base (1), a suspension electromagnet (2), a rotating shaft (3), a support body II (4), a magnetic rotating stator (6), a magnetic rotating rotor (7), a support body I (10), a dispersed stator (14), a magnetic dispersed rotor (15), an annular permanent magnet (16), a support shaft (19) and an electromagnet stator (22), wherein the support body II (4) is mounted on the base (1), the support body I (10) is mounted on the support body II (4), the suspension electromagnet (2) is mounted in the base (1), the rotating shaft (3) is rotatably mounted in the support body II (4), a permanent magnet is mounted at the bottom of the rotating shaft (3), the suspension electromagnet (2) is located below the rotating shaft (3), and the magnetic rotating rotor (7) is installed on the rotating shaft (3), the magnetic rotating stator (6) is installed in the support body II (4), the magnetic rotating stator (6) is arranged around the outer side of the magnetic rotating rotor (7), the support shaft (19) is connected to the rotating shaft (3), the dispersed stator (14) and the electromagnet stator (22) are both installed in the support body I (10), the magnetic dispersed rotor (15) is connected to the support shaft (19), the magnetic dispersed rotor (15) is arranged around the outer side of the dispersed stator (14), the annular permanent magnet (16) is sleeved on the outer side of the magnetic dispersed rotor (15), and the electromagnet stator (22) is arranged around the outer side of the annular permanent magnet (16).

2. The magnetic suspension dispersing device for mixing polymer drag reducers according to claim 1, characterized in that: The top of the dispersion stator (14) is provided with an upper cover (13); the magnetic dispersion rotor (15) is a disc structure; dispersion blades are provided on the magnetic dispersion rotor (15); the annular permanent magnet (16) is coaxially arranged with the magnetic dispersion rotor (15); a limiting ring (18) is provided at the bottom of the magnetic dispersion rotor (15); the bottom of the annular permanent magnet (16) is connected to the limiting ring (18); the bottom of the support shaft (19) is provided with a keyway structure; The discharge rotor is provided with a discharge port (9) on the support body I (10), the discharge rotor is adjacent to the discharge port (9), the support shaft (19) is connected to the rotating shaft (3) by means of a hexagonal slot, the magnetic dispersion rotor (15) is connected to the top of the support shaft (19) by means of a keyway structure, the magnetic rotating rotor (7) is installed on the rotating shaft (3) by means of a keyway structure; the rotating shaft (3) is rotatably installed in the support body II (4) by means of a mechanical seal (8).

3. The magnetic suspension dispersing device for mixing polymer drag reducers according to claim 1, characterized in that: A heat dissipation device is installed in the support body I (10); a control box (20) is installed on the outer side of the support body II (4); the suspension electromagnet (2), the magnetic rotating stator (6) and the electromagnet stator (22) are all connected to the control box (20).

4. The magnetic suspension dispersing device for mixing polymer drag reducers according to claim 3, characterized in that: The heat dissipation device comprises: a heat exchange plate (11) and a liquid delivery pipe (12); a heat dissipation pipe is installed on the surface of the heat exchange plate (11); the heat dissipation pipe is connected to the liquid delivery pipe (12); the heat exchange plate (11) is installed on the outside of the electromagnet stator (22); and the liquid delivery pipe (12) is connected to a cooling liquid circulation device.

5. The magnetic suspension dispersing device for mixing polymer drag reducers according to claim 3, characterized in that: The control box (20) is provided with a power amplifier (201), a cooling fan (202) and a microprocessor (203) inside, the cooling fan (202) is located outside the power amplifier (201), the power amplifier (201) is connected to the microprocessor (203), and the suspension electromagnet (2), the magnetic rotating stator (6) and the electromagnet stator (22) are all connected to the power amplifier (201).

6. The magnetic suspension dispersing device for mixing polymer drag reducers according to claim 1, characterized in that: The number of the electromagnet stators (22) is multiple, and the support body I (10) is evenly distributed with multiple compartments for installing the electromagnet stators (22), and the multiple electromagnet stators (22) are installed in the multiple compartments in a one-to-one correspondence.

7. The magnetic suspension dispersing device for mixing polymer drag reducers according to claim 1, characterized in that: A position sensor (5) is installed in the support body II (4), and a rotation speed sensor (21) is installed in the support body I (10). The rotation speed sensor (21) is adjacent to the middle of the support shaft (19).

8. A method for using a magnetic suspension dispersion device for mixing a polymer drag reducer, characterized in that: Based on the magnetic suspension dispersing device for mixing a polymer drag reducer according to any one of claims 1 to 7, the method for using the magnetic suspension dispersing device for mixing a polymer drag reducer comprises: S1. The magnetic field generated by the suspension electromagnet acts on the permanent magnet of the rotating shaft, so that the rotating shaft pushes the supporting shaft and the magnetic dispersion rotor to a preset height; S2, the magnetic field generated by the magnetic rotating stator acts on the magnetic rotating rotor, so that the magnetic rotating rotor drives the support shaft and the magnetic dispersion rotor to reach a preset speed; S3. The magnetic field generated by the electromagnet stator acts on the annular permanent magnet, so that the magnetic dispersed rotor is located at the axial center position under the action of the magnetic field, thereby stabilizing the gap between the dispersed stator and the magnetic dispersed rotor.

9. The method for using the magnetic suspension dispersing device for mixing polymer drag reducers according to claim 8, characterized in that: Step S1 includes: S11, sending a control command to the suspension electromagnet through the microprocessor in the control box, so that the suspension electromagnet generates a magnetic field; S12, the magnetic field generated by the suspension electromagnet acts on the permanent magnet of the rotating shaft, so that the rotating shaft pushes the supporting shaft and the magnetic dispersion rotor to reach a preset height; S13, synchronously monitoring the height position of the rotating shaft through a position sensor, and feeding back the height position of the rotating shaft to a microprocessor, so that the magnetic field of the suspension electromagnet remains stable; Step S2 includes: S21, after the height is stabilized, sending a control instruction to the power amplifier through the microprocessor, so that the power amplifier outputs current to the magnetic rotating stator; S22, the magnetic field generated by the magnetic rotating stator acts on the magnetic rotating rotor, so that the magnetic rotating rotor drives the support shaft and the magnetic dispersion rotor to reach a preset speed; S23, collecting the rotation speed of the support shaft through the rotation speed sensor, and feeding back the rotation speed of the support shaft to the microprocessor, so that the rotation speed of the magnetic dispersion rotor remains stable; Step S3 includes: S31, when the magnetic suspension dispersion device is running, sending a control instruction to the electromagnet stator through the microprocessor, so that the electromagnet stator generates a magnetic field; S32, the magnetic field generated by the electromagnet stator acts on the annular permanent magnet, so that the magnetic dispersed rotor is at the axial center position under the action of the magnetic field, thereby stabilizing the gap between the dispersed stator and the magnetic dispersed rotor; S33, delivering external cooling water to the heat exchange plate through the liquid delivery pipe to perform heat exchange on the space where the electromagnet stator is located; S34, cooling the power amplifier and the microprocessor in the control box by means of a cooling fan.

10. The method for using the magnetic suspension dispersing device for mixing polymer drag reducers according to claim 8, characterized in that: Step S3 includes: S4. After the magnetic suspension dispersion device starts and runs stably, the material is injected through the upper cover; S5, shearing, grinding and dispersing the material by means of a dispersing stator and a magnetic dispersing rotor to form a mixed liquid in the support body I; S6, discharging the mixed liquid through the discharge port; S7, after the operation of the magnetic suspension dispersion device is completed, a control instruction is sent to the suspension electromagnet, the magnetic rotating stator and the electromagnet stator through the microprocessor; S8. By adjusting the magnetic field, the rotation speed of the magnetic dispersion rotor is reduced to zero, and the rotor falls to the supporting position of the base along with the rotating shaft through the supporting shaft.

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