A pipeline magnetic levitation conveying device

Abstract

The present invention discloses a pipeline magnetic levitation conveying device, which mainly consists of six parts, specifically including an open water tank (feeding device) for maintaining a constant pressure head, a centrifugal water pump (power device) for conveying fluid power, a magnetic levitation guide rail with a circular solenoid coil through which direct current is passed (levitation device), a circular pipeline for long-distance conveying (guiding device), and a horseshoe-shaped carrier (conveying device). This technical invention has the advantages of convenient operation, safety and stability, energy conservation and environmental protection, etc., and to a certain extent solves the problems of mechanical vibration, wall adhesion, siltation blockage, and pipeline wear in the pipeline hydraulic conveying of slurry, bulk materials, and capsule-type pipelines that urgently need to be solved.

Description

Technical Field

[0001] The present invention relates to the field of energy transportation, and particularly to a pipeline magnetic levitation transportation device. Background Art

[0002] The pipeline magnetic levitation transportation technology is a pipeline hydraulic transportation method that is easy to operate, safe, stable, energy-saving and environment-friendly, and has many advantages and characteristics compared with the traditional pipeline transportation method. The traditional pipeline transportation technologies mainly include the slurry pipeline transportation method and the plastic pipeline transportation method. The slurry pipeline transportation method is to break and mix fine-grained solid materials with a liquid medium for transportation, use a slurry pump to transport the mixed materials over a long distance, and separate the materials from the fluid medium after reaching the destination. The plastic pipeline transportation technology is to mold or extrude bulk materials into water-resistant and abrasion-resistant columnar plastics, inject them into the pipeline, and conduct long-distance transportation. The above two transportation methods are both typical liquid-solid coupling multiphase flow transportation methods.

[0003] Pipeline hydraulic transportation is an important branch of pipeline material transportation. The method of transporting solid materials through pipelines has been paid more and more attention, and great developments have been made both at home and abroad. Pipeline hydraulic transportation technology is used in the dredging of seaports, inland rivers and lakes, the filling of dike roadbeds, and the transportation of fly ash and tailings. There are many problems with the traditional pipeline hydraulic transportation technology:

[0004] 1) Under the action of the fluid, the bulk materials and plastics are prone to collide with and mechanically rub against the inner wall of the pipeline, resulting in potential safety hazards.

[0005] 2) The bulk materials and plastics transported in the pipeline cannot react with the transportation medium, and the types of transported materials are limited.

[0006] 3) The bulk materials and plastics are prone to friction with the pipeline, and the energy consumption of the working system is relatively large.

[0007] 4) In the traditional pipeline transportation method, safety accidents such as water leakage and fracture occur, and emergency braking of materials cannot be achieved.

[0008] 5) In the bulk material pipeline hydraulic transportation method, the pipeline is prone to blockage under low-flow working conditions.

[0009] 6) The bulk materials are prone to sedimentation and caking in the pipeline, making it difficult to start again and the pipeline repair difficult.

[0010] 7) After the materials reach the destination, a dehydration process still needs to be completed, which increases the transportation cost under certain conditions.

[0011] 8) Due to the existence of frictional resistance between the materials and the pipeline, the initial flow rate of material startup is relatively large.

[0012] In order to further solve the problems existing in the traditional pipeline hydraulic transportation method, this patented invention proposes a concept of a pipeline fluid transportation method based on the magnetic levitation theory and using the pipeline fluid as the transportation power.

[0013] Currently, with the continuous development of pipeline hydraulic transportation technology, on the basis of the pipeline transportation methods for bulk materials and shaped materials, a container-type material transportation method has been proposed, but it still cannot solve pipeline hydraulic transportation problems such as mechanical vibration of the transportation carrier, wall adhesion, siltation blockage, and pipeline wear. Chinese Patent CN104029686 discloses an orbital assembly of a maglev train. This invention introduces the traction module of the maglev guide rail, and the traction module includes permanent magnets arranged in an array structure and a long stator coil powered by the ground. The traction force structure is relatively complex. Although the transportation resistance of the horseshoe-shaped carrier is reduced, the investment cost of the maglev technology is increased. Chinese Patent CN103343024 discloses a new method for transporting briquettes and coking coal inside a pipeline. This invention introduces that solid particles and water are mixed in a certain proportion to form a transportation carrier, which can effectively reduce the frictional resistance of briquette transportation, effectively control the sinking speed of briquettes and coking coal, so as to achieve the effective migration of materials in the pipeline, improve the transportation efficiency of materials, and reduce the transportation cost. This invention alleviates problems such as mechanical vibration and pipeline inner wall wear in the transportation of bulk materials and shaped materials to a certain extent. However, it still cannot fundamentally solve problems such as wear between materials and the pipeline inner wall, mechanical collision, and transportation safety. In addition, the selection and proportion of the grading of shaped materials and coking coal are relatively fixed, which not only has great limitations on the types of transported materials, but also puts special requirements on the form of transported materials. Summary of the Invention

[0014] The purpose of the present invention is to provide a pipeline maglev transportation device to solve the above problems. The technical problem to be solved is: aiming at the traditional pipeline hydraulic transportation technology, combined with a simple magnetic levitation mechanism, to propose a pipeline hydraulic transportation method with low energy consumption, high efficiency, and simple operation. This pipeline maglev transportation technology will solve major problems such as adhesion limitation, mechanical vibration, and noise wear during the operation of bulk materials or shaped materials in the pipeline.

[0015] The present invention realizes the above purpose through the following technical solutions: It is composed of four parts: a suspension guide rail, a power water pump, a transportation pipeline, and a horseshoe-shaped carrier. The cross-section of the horseshoe-shaped carrier is horseshoe-shaped, and three permanent magnets are respectively installed at the front and rear cross-sections and the bottom position inside the carrier. The maglev guide rail is arranged at the bottom position of the pipeline, and dense energized solenoid coils are arranged inside. The stable direct current of the solenoid coils will form a stable magnetic field, and the magnetic field magnetizes the metal plate, causing the horseshoe-shaped carrier to stably levitate above the guide rail. The permanent magnets at the front and rear cross-sections inside the horseshoe-shaped carrier will form a repulsive force between the carriers, enabling the multi-carrier machine to perform long-distance transportation without blockage problems.

[0016] The present invention comprises an upstream water supply reservoir, a clean water centrifugal pump, an electric control valve, a three-pronged pipeline, an open water tank, a carrier controller, a straight pipe section, a curved pipe section, a horseshoe-shaped carrier, a magnetic suspension guide rail, a carrier rail-type roller, a metal plate and a carrier permanent magnet. The outlet of the upstream water supply reservoir is connected to the inlet of the clean water centrifugal pump, the outlet of the clean water centrifugal pump is connected to the inlet of the electric control valve through the three-pronged pipeline, the outlet of the electric control valve is connected to the inlet of the open water tank, the outlet of the open water tank is connected to the inlet of the carrier controller, the outlet of the carrier controller is connected to the straight pipe section and the curved pipe section, magnetic suspension guide rails are arranged in the straight pipe section and the curved pipe section, the metal plate is arranged on the magnetic suspension guide rails, the carrier permanent magnets are arranged at both ends of the horseshoe-shaped carrier, the carrier rail-type rollers are arranged on the horseshoe-shaped carrier, the horseshoe-shaped carrier is connected to the magnetic suspension guide rails through the carrier rail-type rollers, and materials are placed in the horseshoe-shaped carrier.

[0017] An open water tank upstream water supply port is arranged on one side of the inner lower end of the open water tank, and the open water tank upstream water supply port is connected to the outlet of the electric control valve. An open water tank carrier delivery port is arranged on the other side of the inner lower end of the open water tank, and the open water tank carrier delivery port is connected to the carrier controller.

[0018] "L"-shaped simple supporting feet are arranged on both sides of the lower end of the horseshoe-shaped carrier, the carrier rail-type roller is arranged on the inner edge of the "L"-shaped simple supporting feet, carrier roller tracks are arranged on both sides of the magnetic levitation guide rail, the carrier rail-type roller is located in the carrier roller track, and a ring-shaped energized spiral coil is arranged in the magnetic levitation guide rail.

[0019] The two ends of the horseshoe-shaped carrier are respectively provided with a carrier rear permanent magnet and a carrier front permanent magnet, and the bottom of the horseshoe-shaped carrier is provided with a carrier bottom permanent magnet.

[0020] The dimensions of the open water tank are a length-to-width ratio of 1.0 to 1.5 and a width-to-height ratio of 1.5 to 2.0.

[0021] The cross section of the horseshoe-shaped carrier is horseshoe-shaped, the ratio of the length to the width of the carrier is 0.1-0.9, the height of the carrier accounts for 0.5-0.8 of the entire diameter range of the circular tube, and the overall structure of the carrier presents a symmetrical arrangement.

[0022] The inner diameter of the straight pipe section and the curved pipe section is 0.50m, the outer diameter is 0.52m, and the wall thickness is 0.01m.

[0023] The bottom surface of the permanent magnet at the bottom of the horseshoe-shaped carrier is an N pole, and the upper surface is an S pole, and the specific size is 0.3m×0.6m×0.01m.

[0024] The beneficial effects of the present invention are as follows:

[0025] The present invention is a pipeline maglev conveying device. Compared with the prior art, the advantages and positive effects of the pipeline maglev conveying technology of the present invention are as follows: The conveying principle adopts guide rail maglev, which can, to a certain extent, overcome the severe friction between the conveying carrier and the pipeline, and reduce the system frictional resistance of the carrier movement. The fluid inside the pipeline serves as the conveying power, which will change the traditional maglev power mechanism. In this way, the principle of maglev is effectively utilized, and the traction device with complex structure is removed, making the operation of this pipeline material conveying method simple and easy to maintain. The adopted horseshoe-shaped carrier is a special container-type carrier material transportation method, which can reduce the dehydration process cost of the material. Loading the material into the carrier can increase the types of materials to be conveyed, and there is no need to overly emphasize the form of the conveyed material. Installing a maglev guide rail inside the pipeline ensures that the carrier will not rotate inside the pipeline, and this transportation method is more effective for substances that must be placed in a certain direction. The pipeline maglev conveying technology proposed in this invention can achieve the flow rate of the internal medium of the pipeline when conveying materials, fully utilize the kinetic energy provided by the fluid, and the energy-saving effect is increased by 1 / 3 compared with the traditional pipeline hydraulic conveying method.

[0026] Compared with the existing pipeline hydraulic conveying technology, the present invention also has the following advantages:

[0027] 1) The types of conveyed materials are rich.

[0028] 2) The material is placed inside the horseshoe-shaped carrier, eliminating the dehydration process and reducing the conveying cost of the system.

[0029] 3) The carrier is restricted by the maglev guide rail and does not have serious problems such as wall adhesion and mechanical friction.

[0030] 4) The carrier is suspended in the pipeline, and the energy utilization rate provided by the fluid is relatively high.

[0031] 5) The complex operation of the maglev guide rail is eliminated, and it is more convenient to repair the conveying system.

[0032] 6) The horseshoe-shaped carrier can be emergently braked at any time under the action of the maglev guide rail.

[0033] 7) Reverse permanent magnets are arranged on the front and rear cross-sections of the horseshoe-shaped carrier. When multiple carriers move in the pipeline, they are affected by repulsive forces and will not be blocked, enabling continuous conveying of multiple carriers in the pipeline.

[0034] 8) This technology is not affected by terrain. Since the carrier is suspended above the maglev guide rail, it runs stably and does not cause bumps.

[0035] 9) The conveying medium is essentially different from slurry conveying. It is a typical pure material conveying method, and the fluid can be recycled, which can alleviate the current situation of water resource shortage.

[0036] 10) It is pollution-free to the surrounding environment and water quality, and is green and environmentally friendly. Brief Description of the Drawings

[0037] Figure 1 It is a schematic diagram of the overall structure of the working system of the present invention.

[0038] Figure 2 It is a schematic diagram of the detailed structure layout of the open water tank of the present invention.

[0039] Figure 3 It is a schematic diagram of the movement of the horseshoe-shaped carrier in a straight pipeline of the present invention.

[0040] Figure 4 It is a schematic diagram of the movement of the horseshoe-shaped carrier in a bent pipeline of the present invention.

[0041] Figure 5 It is a schematic diagram of the cross-section of the horseshoe-shaped carrier in the pipeline of the present invention.

[0042] Figure 6 It is a schematic diagram of the longitudinal section of the horseshoe-shaped carrier in the pipeline of the present invention.

[0043] Figure 7 It is a schematic diagram of the structure of the carrier roller of the present invention.

[0044] Figure 8 It is a schematic diagram of the arrangement of permanent magnets inside the horseshoe-shaped carrier of the present invention.

[0045] Figure 9 It is a top view schematic diagram of the magnetic levitation guide rail of the present invention

[0046] Figure 10 It is a schematic diagram of the arrangement of internal wires of the magnetic levitation guide rail of the present invention.

[0047] Figure 11 It is a schematic diagram of the magnetic field and current direction of the magnetic levitation guide rail of the present invention.

[0048] Figure 12 It is a schematic diagram of the principle of stable movement of the horseshoe-shaped carrier of the present invention.

[0049] Figure 13 It is a schematic diagram of the principle of the braking condition of the horseshoe-shaped carrier of the present invention.

[0050] Figure 14 It is a schematic diagram of the acting force between the two carriers during the movement in a straight pipe section of the present invention.

[0051] Figure 15 It is a schematic diagram of the acting force between the two carriers during the movement in a bent pipe section of the present invention.

[0052] Figure 16 is a schematic diagram of the three-dimensional structure of the present invention.

[0053] Marking description in the figure: 1: upstream water supply reservoir; 2: clean water centrifugal pump; 3: electric control valve; 4: three-way pipe; 5: open water tank; 6: carrier controller; 7: straight pipe section; 8: elbow pipe section; 9: horseshoe-shaped carrier; 10: magnetic levitation guide rail; 11: carrier rail-shaped roller; 12: metal plate; 13: carrier permanent magnet; 14: "L"-shaped simple support foot; 15: carrier bottom permanent magnet; 16: carrier rear permanent magnet; 17: carrier front permanent magnet; 18: upstream water supply port of the open water tank; 19: carrier delivery port of the open water tank; 20: annular energized solenoid coil; 21: carrier roller track; 22: material. Specific embodiments

[0054] The present invention will be further described below in conjunction with the accompanying drawings:

[0055] As Figures 1-16 shown: The present invention includes an upstream water supply reservoir 1, a clean water centrifugal pump 2, an electric control valve 3, a three-way pipe 4, an open water tank 5, a carrier controller 6, a straight pipe section 7, an elbow pipe section 8, a horseshoe-shaped carrier 9, a magnetic levitation guide rail 10, a carrier rail-shaped roller 11, a metal plate 12 and a carrier permanent magnet 13. The outlet of the upstream water supply reservoir 1 is connected to the inlet of the clean water centrifugal pump 2. The outlet of the clean water centrifugal pump 2 is connected to the inlet of the electric control valve 3 through the three-way pipe 4. The outlet of the electric control valve 3 is connected to the inlet of the open water tank 5. The outlet of the open water tank 5 is connected to the inlet of the carrier controller 6. The outlet of the carrier controller 6 is connected to the straight pipe section 7 and the elbow pipe section 8. The magnetic levitation guide rail 10 is arranged in the straight pipe section 7 and the elbow pipe section 8. The metal plate 12 is arranged on the magnetic levitation guide rail 10. The carrier permanent magnet 13 is arranged at both ends of the horseshoe-shaped carrier 9. The carrier rail-shaped roller 11 is arranged on the horseshoe-shaped carrier 9. The horseshoe-shaped carrier 9 is connected to the magnetic levitation guide rail 10 through the carrier rail-shaped roller 11. The material 22 is placed inside the horseshoe-shaped carrier 9.

[0056] An upstream water supply port 18 of the open water tank is arranged on one side of the lower end inside the open water tank 5. The upstream water supply port 18 of the open water tank is connected to the outlet of the electric control valve 3. An open water tank carrier delivery port 19 is arranged on the other side of the lower end inside the open water tank 5. The open water tank carrier delivery port 19 is connected to the carrier controller 6.

[0057] On both sides of the lower end of the horseshoe-shaped carrier 9, "L"-shaped simple feet 14 are provided. Inside the inner sides of the "L"-shaped simple feet 14, the carrier rail-type rollers 11 are provided. On both sides of the magnetic levitation guide rail 10, carrier roller tracks 21 are provided. The carrier rail-type rollers 11 are located inside the carrier roller tracks 21. Inside the magnetic levitation guide rail 10, an annular energized solenoid 20 is provided.

[0058] At both ends of the horseshoe-shaped carrier 9, a carrier rear permanent magnet 16 and a carrier front permanent magnet 17 are respectively provided. At the bottom inside the horseshoe-shaped carrier 9, a carrier bottom permanent magnet 15 is provided.

[0059] The size of the open water tank 5 has a length-width ratio of 1.0 to 1.5 and a width-height ratio of 1.5 to 2.0.

[0060] The cross-section of the horseshoe-shaped carrier 9 is horseshoe-shaped. The length-width ratio of the carrier is 0.1 to 0.9, and the proportion of the height of the carrier in the diameter range of the entire circular pipe is 0.5 to 0.8. The overall structure of the carrier shows a symmetric layout.

[0061] The inner diameter of the straight pipe section 7 and the bent pipe section 8 is 0.50 m, the outer diameter is 0.52 m, and the wall thickness is 0.01 m.

[0062] The lower bottom surface of the carrier bottom permanent magnet 15 in the horseshoe-shaped carrier 9 is the N pole, and the upper surface is the S pole. The specific size is 0.3 m × 0.6 m × 0.01 m.

[0063] The horseshoe-shaped carrier 9 enters the inside of the conveying circular pipe from the open water tank 5 that maintains a constant pressure. The hydrodynamic force inside the circular pipe comes from three identical specifications of clear water centrifugal pumps 2 for supplying water upstream of the open water tank 5. The horseshoe-shaped carrier 9 accelerates forward under the action of the pressure difference formed by the pressurized fluid at its front and rear cross-sections. On the inner side cross-section of the bottom of the circular pipe for long-distance transportation, a magnetic levitation guide rail 10 is arranged. The transverse cross-section appearance of the magnetic levitation guide rail 10 presents an inverted trapezoid, and an energized annular solenoid for conducting stable direct current is arranged inside it. A metal plate 12 is laid on the top of the guide rail, and the surface of the metal plate 12 can be magnetized to form a permanent magnet. A permanent magnet 15 is installed at the bottom of the horseshoe-shaped carrier 9. At the connection between the horseshoe-shaped carrier 9 and the magnetic levitation guide rail 10, rail-type rollers 11 are arranged to reduce the contact resistance of the sliding friction between the horseshoe-shaped carrier 9 and the inner wall of the pipe during movement. During the movement of the horseshoe-shaped carrier 9, by changing the magnitude and direction of the current of the annular spiral coil 20 of the magnetic levitation guide rail 10, the movement state of the horseshoe-shaped carrier 9 inside the circular pipe can be effectively regulated.

[0064] The appearance of the open water tank 5 for maintaining a constant pressure presents a cubic shape, where the ratio of the length to the width of the water tank is 1.0 - 1.5, and the ratio of the width to the height is 1.5 - 2.0. The pressure head height from the free liquid surface of the open water tank to the inlet 19 for putting in the horseshoe-shaped carrier is 10 - 15 times the diameter of the circular pipe.

[0065] The cross-section of the horseshoe-shaped carrier 9 presents a horseshoe shape, where the ratio of the length to the width of the horseshoe-shaped carrier is 0.1 - 0.9, its height accounts for 0.5 - 0.8 of the entire circular pipe diameter range, and the overall structure of the carrier is arranged symmetrically.

[0066] The inner diameter of the material conveying pipe is 0.5 m, and the wall thickness of the pipe is 0.01 m. The turning radius of the center line of the elbow section 8 of the entire pipe system is 10 times the diameter of the circular pipe.

[0067] The bottom cross-section of the pipe is provided with a maglev guide rail 10. The cross-section shape of the maglev guide rail 10 is an inverted trapezoid, and the ratio of the height of the trapezoidal cross-section to the diameter of the circular pipe is 0.3 - 0.5. The lower bottom surface of the maglev guide rail 10 is arc-shaped and is in close contact and connection with the inner wall of the circular pipe, where the radian range of the central angle occupied by the arc is π / 4 - π / 3. The ratio of the width of the upper surface of the maglev guide rail 10 to the width of the horseshoe-shaped carrier 9 is 0.6 - 0.8.

[0068] The open water tank 5 is provided with three symmetrically arranged inlets 19 for putting in the horseshoe-shaped carrier. The height of the center horizontal position of the inlet 19 from the bottom plate of the open water tank 5 is 1.0 - 2.0 times the diameter of the circular pipe, and the center-to-center distance between two adjacent inlets 19 is 2.0 - 2.5 times the diameter of the circular pipe.

[0069] The upstream of the open water tank 5 is connected to a water inlet pipe, and the flow rate of the water inlet pipe is provided by three identical specification clean water centrifugal pumps 2 arranged in parallel. The flow rate of the circular pipe is controlled by an electric valve 3 arranged along the pipe.

[0070] The lower boundary of the cross-section of the horseshoe-shaped carrier 9 is a right-angled side, and the upper boundary is an arc-shaped boundary. The ratio of the diameter of the arc to the width of the carrier is 1.0 - 2.0, and the height of the arc-shaped part is 0.3 - 0.5 of the height range of the horseshoe-shaped carrier.

[0071] The bottom of the horseshoe-shaped carrier 9 is provided with a permanent bar magnet 15. The ratio of the length to the width of the size of the permanent bar magnet is 1.5 - 1.2, the thickness is 0.1 - 0.2 of the height of the horseshoe-shaped carrier 9, and the area of the permanent magnet accounts for 0.6 - 0.8 of the bottom area of the carrier. A pair of permanently installed magnets 16 and 17 are also arranged on the front and rear cross-sections of the horseshoe-shaped carrier, and the main function is to relieve the blockage problem of multi-material conveying inside the circular pipe.

[0072] Six symmetric connecting feet 14 are installed at the bottom of the horseshoe-shaped carrier 9, and their main function is to connect with the maglev guide rail. The feet 14 are in the shape of "L", with a width of 0.2 - 0.3 times the width of the carrier 9 and a length of 0.2 - 0.3 times the length of the carrier. Rail-type rollers 11 are arranged at the contact positions between the "L"-shaped feet 14 and the inverted trapezoidal maglev guide rail 10.

[0073] A track 21 is arranged on the outside of the maglev guide rail. The rail-type rollers move forward along the track, and their function is to maintain the longitudinal and lateral displacements of the horseshoe-shaped carrier 9 in the circular tube.

[0074] The inside of the maglev guide rail is hollow, and multiple parallel solenoid coils 20 are arranged therein. The direct current inside the annular spiral coil can form a permanent electromagnetic field.

[0075] A metal plate 12 is arranged on the top of the maglev guide rail. The metal plates are laid continuously with gaps. The length-width ratio of each metal plate is 1.5 - 1.0, the thickness is 0.1 times that of the maglev guide rail, and the width of the joint is 0.05 m.

[0076] If direct current in the clockwise direction is passed through the maglev guide rail 10, a mutually repulsive magnetic field will be formed with the permanent magnet at the bottom of the horseshoe-shaped carrier, enabling the horseshoe-shaped carrier to be stably suspended and transported. If direct current in the counterclockwise direction is passed through the inside of the maglev guide rail 10, an adsorptive magnetic field will be formed with the permanent magnet at the bottom of the carrier, enabling the horseshoe-shaped carrier to be adsorbed on the upper surface of the metal plate of the maglev guide rail.

[0077] The working kinetic energy of the system mainly comes from the open water tank 5. The power provided by the system depends on the elevation difference between the free liquid surface of the open water tank and the carrier discharge port 20. A water supply hole 19 is arranged upstream of the open water tank. The water supply pipe is connected to a group of three-way pipes 4, and each branched pipe is provided with a flow control valve 3 and a centrifugal water pump 2 with a certain lift. The fluid in the open water tank 5 is provided by the upstream water supply reservoir 1. Downstream of the open water tank 5 is the horseshoe-shaped carrier discharge port 20. In order to achieve continuous multi-carrier discharge, three capsule discharge ports are arranged in parallel at the downstream section. At the same time, the discharge port is connected to the controller 6 of the carrier, and this device plays a role in controlling the moment when the carrier enters the conveying pipeline.

[0078] The overall layout of the system is as follows: the upstream water supply reservoir 1, the open water tank 5, and the straight pipe section 7 and the elbow section 8 of the pipeline. The straight pipe section 7 of the system is connected to the elbow section 8 through a flange, and the radius of the center line of the elbow section 8 is greater than 10 times the pipe diameter.

[0079] The magnetic levitation guide rail 10 is arranged at the bottom of the conveying pipeline, presenting an inverted trapezoidal shape, and an annular energized solenoid coil 20 is arranged inside it. By changing the current direction of the annular energized solenoid coil, the magnetic pole direction of the magnetic levitation guide rail 10 is changed. A magnetizable metal plate 12 is arranged at the top of the magnetic levitation guide rail 10, and the function of the metal plate is to convert the magnetic field formed by the ring-shaped solenoid coil 20 energized with direct current into a permanent magnetic field. The metal plates are arranged in a continuous manner with gaps, which can prevent the deformation of the guide rail caused by the thermal expansion and contraction of the metal plates.

[0080] The cross-sectional shape of the horseshoe-shaped carrier 9 is horseshoe-shaped, and the main function of this shape is to make full use of the overall space of the circular pipeline to convey more materials. Six symmetric "L"-shaped simple supporting feet are arranged at the bottom of the horseshoe-shaped carrier 9, and rail-type roller devices are installed at the ends of the supporting feet through bearings. The main function is to control the longitudinal displacement and lateral position of the carrier suspended inside the circular pipe.

[0081] The rail-type rollers 11 of the horseshoe-shaped carrier run on the carrier track 21, and this track is embedded in the groove of the roller.

[0082] The inside of the horseshoe-shaped carrier 9 is composed of three permanent magnets, namely the permanent magnet 15 at the bottom of the carrier, the permanent magnet 16 at the rear of the carrier vehicle, and the permanent magnet 17 in front of the carrier vehicle. The specific functions of the three permanent magnets are different. The permanent magnet 15 at the bottom mainly plays the role of suspending the carrier, and the permanent magnets at the front and rear end positions of the carrier maintain no material blockage inside the circular pipe through repulsive force.

[0083] The ratio of the transverse dimension to the longitudinal dimension of the horseshoe-shaped carrier of the present invention is 0.1 - 0.9, the ratio of the cross-section of the carrier to the cross-section of the circular pipe is 0.5 - 0.8. The ratio of the height of the horseshoe-shaped carrier to the magnetic levitation guide rail is 10 - 1.5.

[0084] In the present invention, the operating states of the horseshoe-shaped carrier 9 include two situations: uniform movement and emergency braking.

[0085] The horseshoe-shaped carrier 9 moves uniformly in the circular pipeline, and the magnetic levitation guide rail is energized with a clockwise current. At this time, the N pole of the metal plate faces upward, and at the same time, it has a repulsive interaction with the permanent magnet 15 with the N pole facing downward inside the carrier. Under the push of the fluid in the pipeline, the horseshoe-shaped carrier 9 moves forward at almost the same speed as the fluid.

[0086] The horseshoe-shaped carrier 9 brakes emergently in the circular pipeline, and the magnetic levitation guide rail is energized with a counterclockwise current. At this time, the S pole of the metal plate faces upward, and at the same time, it has an attractive interaction with the permanent magnet 15 with the N pole facing downward inside the carrier, and the carrier is adsorbed on the top of the magnetic levitation guide rail 10.

[0087] The following further explains the specific implementation manners with specific examples in conjunction with the drawings.

[0088] Example 1

[0089] As Figure 1 shown, the fluid flows out from the upstream water supply reservoir 1, and under the action of three centrifugal clean water pumps 2, it enters the three-way pipeline 4. The fluid in the pipeline is controlled by two-stage flow control valves 3, and then enters the open water tank 5 for regulating the pressure of the water conveyance pipeline. On the one hand, the open water tank 5 plays a role in regulating the pressure, and on the other hand, it serves as the inlet for the input of the horseshoe-shaped carrier. The entry of the carrier 9 from the open water tank into the conveying pipeline is controlled by a valve.

[0090] As shown in 5, the horseshoe-shaped carrier 9 runs directly above the maglev guide rail 10. The carrier is connected to the guide rail through an "L"-shaped support leg 14, and a rail-type roller 11 is installed at the end of the support leg. The carrier is moved forward by the magnetic force, and the roller also moves forward along the track 21.

[0091] As shown in 12, the horseshoe-shaped carrier 9 moves stably above the guide rail. It can be seen from the figure that the magnetic force of the maglev guide rail repels the permanent magnet at the bottom of the carrier, and the longitudinal and lateral displacements during the suspension process are controlled by the "L"-shaped support legs.

[0092] As shown in 13, the horseshoe-shaped carrier 9 is tightly fixed on the top of the guide rail metal plate. It can be seen from the figure that the magnetic force of the maglev guide rail attracts the permanent magnet at the bottom of the carrier, and at this time, the rail-type roller 11 is separated from the carrier roller track.

[0093] Figure 14 and Figure 15 respectively show the repulsive interaction of the permanent magnets at the front and rear cross-sections of the carrier. Whether in the straight pipe section or the bent pipe section, the two horseshoe-shaped carriers before and after will maintain a constant distance.

[0094] This invention adopts the maglev principle, reducing the resistance during the movement of the horseshoe-shaped carrier. Compared with the wheel-rail transportation method, this innovation saves 1 / 3 of the energy consumption and improves the overall transportation efficiency of the materials. Under the guidance of the maglev guide rail, the carrier does not rub against the inner wall of the pipeline, so fundamentally overcomes the mechanical vibration and adhesion resistance between the carrier and the inner wall of the pipeline, and improves the service life of the pipeline. The transportation method uses fluid as the transportation power, changing the complex traction device in the maglev guide rail, making the maintenance and operation of the entire working system more convenient. This invention is reasonable in design, energy-saving and environmental-friendly, simple to operate, safe and stable, and has broad application prospects.

[0095] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A pipeline magnetic levitation conveying device, characterized in that: It includes an upstream water supply reservoir (1), a clean water centrifugal pump (2), an electric control valve (3), a three-way pipe (4), an open water tank (5), a carrier controller (6), a straight pipe section (7), a bent pipe section (8), a horseshoe-shaped carrier (9), a magnetic levitation guide rail (10), a carrier rail-type roller (11), a metal plate (12), and a carrier permanent magnet (13). The outlet of the upstream water supply reservoir (1) is connected to the inlet of the clean water centrifugal pump (2). The outlet of the clean water centrifugal pump (2) is connected to the inlet of the electric control valve (3) through the three-way pipe (4). The outlet of the electric control valve (3) is connected to the inlet of the open water tank (5). The outlet of the open water tank (5) is connected to the inlet of the carrier controller (6). The outlet of the carrier controller (6) is connected to the straight pipe section (7) and the bent pipe section (8). The magnetic levitation guide rail (10) is arranged in the straight pipe section (7) and the bent pipe section (8). The metal plate (12) is arranged on the magnetic levitation guide rail (10). The carrier permanent magnets (13) are arranged at both ends of the horseshoe-shaped carrier (9). The carrier rail-type rollers (11) are arranged on the horseshoe-shaped carrier (9). The horseshoe-shaped carrier (9) is connected to the magnetic levitation guide rail (10) through the carrier rail-type rollers (11). Materials (22) are placed inside the horseshoe-shaped carrier (9). An open water tank upstream water supply port (18) is arranged on one side of the lower end inside the open water tank (5). The open water tank upstream water supply port (18) is connected to the outlet of the electric control valve (3). An open water tank carrier feeding port (19) is arranged on the other side of the lower end inside the open water tank (5). The open water tank carrier feeding port (19) is connected to the carrier controller (6). "L"-shaped simple support feet (14) are arranged on both sides of the lower end of the horseshoe-shaped carrier (9). The carrier rail-type rollers (11) are arranged on the inner sides of the "L"-shaped simple support feet (14). Carrier roller tracks (21) are arranged on both sides of the magnetic levitation guide rail (10). The carrier rail-type rollers (11) are located inside the carrier roller tracks (21). An annular energized solenoid coil (20) is arranged inside the magnetic levitation guide rail (10).

2. The pipeline magnetic levitation conveying device according to claim 1, characterized in that: A carrier rear permanent magnet (16) and a carrier front permanent magnet (17) are respectively arranged at both ends of the horseshoe-shaped carrier (9). A carrier bottom permanent magnet (15) is arranged at the bottom inside the horseshoe-shaped carrier (9).

3. The pipeline magnetic levitation conveying device according to claim 1, characterized in that: The size of the open water tank (5) has a length-width ratio of 1.0 to 1.5 and a width-height ratio of 1.5 to 2.

0.

4. The pipeline magnetic levitation conveying device according to claim 1, wherein: The cross-section of the horseshoe-shaped carrier (9) is horseshoe-shaped. The length-width ratio of the carrier is 0.1 to 0.

9. The proportion of the height of the carrier in the entire range of the diameter of the circular pipe is 0.5 to 0.

8. The overall structure of the carrier presents a symmetric layout.

5. The pipeline magnetic levitation conveying device according to claim 1, characterized in that: The inner diameter of the straight pipe section (7) and the bent pipe section (8) is 0.50 m, the outer diameter is 0.52 m, and the wall thickness is 0.01 m.

6. The pipeline magnetic levitation conveying device according to claim 2, characterized in that: The bottom surface of the permanent magnet (15) at the bottom of the carrier in the horseshoe-shaped carrier (9) is the N pole, and the upper surface is the S pole. The specific dimensions are 0.3 m × 0.6 m × 0.01 m.

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