Parallel coupling type magnetic drive pump

Abstract

The invention relates to the technical field of magnetic drive pumps for flow batteries, and discloses a parallel coupling type magnetic drive pump which comprises a first shell and a second shell, fixing frames are connected to the outer walls of the first shell and the second shell through bolts, the fixing frames are located between the first shell and the second shell, and mounting frames are fixedly connected to the interiors of the fixing frames. A stator winding group is mounted in the mounting frame, rotating plates are rotationally connected to the interiors of the first shell and the second shell, permanent magnet rotors are fixedly connected to the outer walls of the sides, close to the stator winding group, of the rotating plates, and impellers are fixedly connected to the outer walls of the sides, away from the stator winding group, of the rotating plates. The motor and the pump are integrally designed, so that the integration level is high, the size is small, and the weight is light; two-side magnetic driving parallel coupling is achieved, vibration is small, the service life is long, energy loss cost is saved, and two-side synchronous output of one pump can be achieved; the axial magnetic flux design is adopted, so that the efficiency is high; the two pumps are driven by the same magnetic circuit, and simultaneous rotation or simultaneous stopping is achieved from the mechanical principle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnetic pumps for flow batteries, in particular to a parallel coupling type magnetic pump. BACKGROUND

[0002] As a new type of large-scale energy storage technology, flow batteries have many advantages such as high energy conversion efficiency, long cycle life, deep charge and discharge, good safety, and environmental friendliness. The storage capacity and power of flow batteries can be flexibly configured according to actual needs. The storage capacity can be increased by increasing the volume of the electrolyte tank, and the power output can be increased by increasing the number of stacks, which makes flow batteries have broad application prospects in the field of large-scale energy storage.

[0003] In a flow battery system, the circulation of electrolyte is a key link to ensure the normal operation of the battery. The magnetic pump transports the electrolyte from the tank to the stack, and after the chemical reaction in the stack, the reacted electrolyte is transported back to the tank. The performance of the magnetic pump directly affects the circulation efficiency, flow stability and pressure control accuracy of the electrolyte, and thus has an important influence on the charge and discharge efficiency, energy conversion efficiency and battery life of the flow battery.

[0004] At present, the magnetic pump for flow batteries mainly adopts the traditional motor driving pump body through magnetic coupling to transport electrolyte. In traditional applications, two magnetic pumps are needed to drive the positive and negative electrolytes respectively. The two magnetic pumps occupy a certain space, increasing the floor area of the entire flow battery system. Moreover, the flow characteristics and chemical reaction rates of the positive and negative electrolytes in the stack are different. A suitable pressure difference can ensure uniform distribution of the electrolyte in the stack, improve the charge and discharge efficiency and energy conversion efficiency of the battery. When two magnetic pumps drive the positive and negative electrolytes respectively, a complex control system is needed to match the outlet pressures of the two pumps in time, which increases the software complexity and maintenance difficulty of the system. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a parallel coupling type magnetic pump, which solves the problems of increasing the floor area of the entire flow battery system and the need for a complex control system, and improves the software complexity and maintenance difficulty of the system.

[0006] In order to achieve the above object, the parallel coupling type magnetic force pump is realized by the following technical scheme: a parallel coupling type magnetic force pump, comprising a shell one and a shell two, the outer wall of the shell one and the shell two is bolted with a fixing frame, the fixing frame is located between the shell one and the shell two, the inside of the fixing frame is fixedly connected with a mounting frame, the inside of the mounting frame is installed with a stator winding group, the inside of the shell one and the shell two is rotatably connected with a rotating plate, the outer wall of the rotating plate close to the stator winding group side is fixedly connected with a permanent magnet rotor, the outer wall of the rotating plate away from the stator winding group side is fixedly connected with an impeller, the outer wall of the shell one and the shell two is fixedly connected with a water outlet and a water inlet, the outer wall of the water outlet is fixedly connected with a flange.

[0007] Through the above scheme: the parallel coupling type magnetic force pump of the embodiment of the application adopts integrated design, integrates the motor and the pump, has high integration degree, small size and light weight, is convenient to install and use, the magnetic force pump is driven in parallel coupling through magnetic force on both sides, has small vibration during operation, can effectively reduce the noise generated by the operation of the equipment, prolongs the service life of the equipment, reduces the maintenance cost, saves the energy consumption cost, provides power to the stator winding group to generate a magnetic field, forms a magnetic coupling effect with the permanent magnet rotor to generate kinetic energy, drives the impeller to rotate, uses centrifugal force to discharge liquid, and the mechanism on both sides of the application is correspondingly arranged, so that liquid can be synchronously output on both sides of one pump, that is, liquid is introduced into the water inlets on both sides at the same time, and then discharged from the two water outlets at the same time, in addition, the axial magnetic flux design is adopted, which further improves the working efficiency of the magnetic force pump and meets diversified use requirements.

[0008] Preferably, the outer wall of the mounting frame is bolted with an isolation sealing plate on both sides.

[0009] Preferably, the outer wall of the water inlet is fixedly connected with a miscellaneous box, and the upper surface of the miscellaneous box is bolted with an upper cover.

[0010] Preferably, the inside of the upper cover is fixedly connected with a connecting rod one, and the bottom end of the connecting rod one is bolted or threaded with a filter plate.

[0011] Preferably, the inside of the filter plate is rotatably connected with a rotating shaft and penetrated by the rotating shaft, and the outer wall of the rotating shaft is fixedly connected with a cleaning scraper.

[0012] Preferably, the cleaning scraper is a spiral line.

[0013] Preferably, the outer wall of the rotating shaft is fixedly connected with a turbine, and the turbine is located in the inside of the upper cover.

[0014] Preferably, the outer wall of the rotating shaft is fixedly connected with a connecting rod two, and both ends of the connecting rod two are fixedly connected with the rotating plate.

[0015] Preferably, the inside of the sundry box is provided with a sewage outlet, and the baffle of the sewage outlet is transparent.

[0016] Preferably, the inside of the sundry box and the upper cover is provided with a water inlet pipe, and the outer wall of the water inlet pipe is fixedly connected with a flange.

[0017] Working principle: the parallel coupling type magnetic pump integrates the motor and the pump, the magnetic field is generated by the stator winding group, the winding group is installed in the mounting frame fixed by the fixed frame; the generated magnetic field forms a magnetic coupling with the permanent magnet rotor fixed on the outer wall of the rotating plate, so that the permanent magnet rotor rotates, the shell one and the shell two rotate through the support rotating plate; the impeller fixed on the other side of the rotating plate rotates, and the liquid is discharged through the water outlet through the centrifugal force, the flange on the outer wall of the water outlet can be connected with the external pipeline, and the two sides of the mechanism are correspondingly provided, the two water inlets can introduce liquid at the same time, and the two water outlets can discharge liquid at the same time, so that one pump can realize synchronous output on both sides. The realization of sealing and no leakage depends on the isolation sealing plate connected by bolts on the outer wall of the mounting frame, and the two cooperate to play a sealing role, so that the permanent magnet rotor and the stator winding group are not in contact, avoiding the use of shaft seal, so as to achieve the leakage-free liquid delivery. The upper surface of the sundry box fixed on the outer wall of the water inlet is bolted with the upper cover, and the upper cover is connected with the filter plate adhering to the outer wall of the water inlet through the connecting rod one; when the liquid enters from the water inlet, the large particle impurities are blocked by the filter plate and fall into the inside of the sundry box; if it is necessary to replace the filter plate, the upper cover can be disassembled, the filter plate is lifted through the connecting rod one, and according to the bolt or threaded connection mode of the connecting rod one, the corresponding operation can be replaced. There are two driving modes of the cleaning scraper, one is water flow driving, the turbine fixed on the outer wall of the shaft is located in the inside of the upper cover, the water flow impacts the turbine to make it rotate, drives the shaft and the cleaning scraper to rotate, the turbine can be arranged on the back side of the filter plate, and the filtered water flow is impacted to prevent being stuck; the other is rotating plate driving, the connecting rod two fixed on the outer wall of the shaft is fixedly connected with the rotating plate at both ends, the rotating plate drives the connecting rod two and the shaft to rotate, and then drives the cleaning scraper to rotate; when the sundry box is cleaned, the baffle of the sewage outlet provided in the inside of the sundry box is transparent and is bolted or clamped with the sundry box, when too much impurities are observed, the baffle can be disassembled for cleaning; the cleaning scraper rotating in spiral line and adhering to the outer wall of the filter plate, the cleaning scraper rotating can peel off the impurities on the outer wall of the filter plate, avoiding blockage, and the continuous radial outward thrust generated by the spiral cleaning scraper rotating will gradually push the impurities away from the center.

[0018] The parallel coupling type magnetic pump has the following beneficial effects: 1. The motor and pump are integrated in the application, with high integration, small volume and light weight; the two sides are driven by magnetic force in parallel coupling, with small vibration, long service life, energy saving and cost saving, and synchronous output on both sides of a pump can be realized; axial magnetic flux design is adopted, with high efficiency; two pumps are driven by the same magnetic circuit, and simultaneous rotation or simultaneous stop is realized from the mechanical principle.

[0019] 2. The application increases the isolation sealing plate on the outer wall of the mounting frame, which cooperates with the mounting frame to play a sealing role, realizes no contact between the permanent magnet rotor and the stator winding group, avoids the use of shaft seal, realizes leakage-free liquid delivery, adopts the design that the pump inlet and outlet are not conductive, eliminates the bypass current between the electric piles generated by the electrolyte in the system, and improves the charging and discharging efficiency of the system.

[0020] 3. The application increases the impurity collecting box on the outer wall of the water inlet, which is convenient to disassemble and clean, filters large particle impurities through the filter plate, and the filter plate is convenient to replace; the filter plate is provided with a rotatable cleaning scraper inside, which is in spiral line type, can gradually push the impurities away from the center, avoids the blockage of the filter plate, and ensures the normal circulation of the liquid. The rotating shaft can drive the rotating of the cleaning scraper through the water flow impact turbine or rotating plate. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the application; Figure 2 It is a schematic view of the internal structure of the shell one and the shell two; Figure 3 It is a schematic view of the local structure of the upper cover; Figure 4 It is a schematic view of the internal structure of the impurity collecting box; Figure 5 It is a schematic view of the local structure of the cleaning scraper; Figure 6 It is a schematic view of the local structure of the connecting rod two.

[0022] 1, shell one; 2, shell two; 3, fixed frame; 4, mounting frame; 5, stator winding group; 6, isolation sealing plate; 7, rotating plate; 8, impeller; 9, water outlet; 10, water inlet; 11, impurity collecting box; 12, upper cover; 13, filter plate; 14, connecting rod one; 15, blowdown; 16, rotating shaft; 17, cleaning scraper; 18, connecting rod two; 19, turbine; 20, water inlet pipe; 21, permanent magnet rotor. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described clearly and completely below with reference to the drawings of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0024] At present, the magnetic force pump for liquid flow battery mainly adopts the mode that a traditional motor drives a pump body to transport electrolyte through magnetic coupling, two magnetic force pumps are required in traditional application, and the two pumps drive positive electrolyte and negative electrolyte respectively, the outlet pressure difference of the two pumps needs to be maintained, and the failure of any single pump will lead to internal pressure loss of the rear-end battery pack, affecting the service life, and even causing damage to the battery pack, so complex control is required to match the outlet pressure of the two pumps in time. The present application aims to provide two liquid outlets through one pump body, and the space occupied is small and the structure is compact.

[0025] Please refer to the drawings Figure 1 - the drawings Figure 2 The parallel coupling type magnetic force pump provided by the embodiment of the present application comprises a shell one 1 and a shell two 2, the outer walls of the shell one 1 and the shell two 2 are bolted with a fixing frame 3, the fixing frame 3 is located between the shell one 1 and the shell two 2, the inside of the fixing frame 3 is fixedly connected with a mounting frame 4, the inside of the mounting frame 4 is installed with a stator winding group 5, the outer walls of the shell one 1 and the shell two 2 are rotatably connected with a rotating plate 7, the outer wall of the side of the rotating plate 7 close to the stator winding group 5 is fixedly connected with a permanent magnet rotor 21, the outer wall of the side of the rotating plate 7 away from the stator winding group 5 is fixedly connected with an impeller 8, the outer walls of the shell one 1 and the shell two 2 are fixedly connected with a water outlet 9 and a water inlet 10, and the outer wall of the water outlet 9 is fixedly connected with a flange.

[0026] Specifically, the shell one 1, the shell two 2 and the fixing frame 3 are fixedly connected through bolts, and then the stator winding group 5 is fixed through the mounting frame 4, the stator winding group 5 is connected with the external output wire through the mounting frame 4, and the existing technology has a solution means, but the arrangement of the cable is not described much, the shell one 1 and the shell two 2 respectively support the rotating plate 7 to rotate through bearings, in use, power is provided to the stator winding group 5 to generate a magnetic field, then the magnetic force coupling effect is formed with the permanent magnet rotor 21 to generate kinetic energy and rotate, the rotating plate 7 drives the impeller 8 to rotate, the impeller 8 rotates to discharge liquid to the water outlet 9 through centrifugal force, then the water outlet 9 is connected with the external pipeline, the mechanisms on both sides of the present application are correspondingly arranged, so that the water inlets 10 on both sides can introduce liquid and be discharged from the two water outlets 9, the motor and the pump are integrated in the present application, the integration degree is high, the volume is small, and the weight is light. The two sides are driven by magnetic force, the parallel coupling vibration is small, the service life is long, and the energy loss cost is saved. One pump can realize synchronous output on both sides. The axial magnetic flux design is adopted, and the efficiency is high.

[0027] Please refer to the attached drawings Figure 2 Both sides of the outer wall of the mounting frame 4 are bolted with isolation sealing plates 6.

[0028] Specifically, in order to avoid the traditional magnetic pump from being unable to isolate the electrolyte, bypass current is generated between the stacks during operation, which affects the charging and discharging efficiency of the system. The isolation sealing plates 6 are added to the outer wall of the mounting frame 4, and the mounting frame 4 and the isolation sealing plates 6 cooperate to achieve sealing, so that the permanent magnet rotor 21 and the stator coil group 5 are not in contact, the use of shaft seals is avoided, and thus the liquid delivery is achieved without leakage.

[0029] Please refer to the attached drawings Figure 3 - the attached drawings Figure 4 The outer wall of the water inlet 10 is fixedly connected with a sundry collection box 11, and the upper surface of the sundry collection box 11 is bolted with an upper cover 12. The inner part of the upper cover 12 is fixedly connected with a connecting rod one 14, and the bottom end of the connecting rod one 14 is bolted or threaded with a filter plate 13.

[0030] Specifically, the application can also add a sundry collection box 11 to the outer wall of the water inlet 10, and the sundry collection box 11 and the upper cover 12 are bolted, which is convenient for disassembly and cleaning. The upper cover 12 connects the filter plate 13 through the connecting rod one 14, and the filter plate 13 is attached to the outer wall of the water inlet 10. When the sundry collection box 11 is connected with the upper cover 12, the filter plate 13 is plugged on the outer wall of the water inlet 10 for filtering, so that large-particle impurities fall into the inner part of the sundry collection box 11. When it is necessary to replace the filter plate 13, the upper cover 12 can be disassembled, and the filter plate 13 can be lifted up through the connecting rod one 14. When the filter plate 13 is bolted with the connecting rod one 14, the bolt can be unscrewed. When it is threaded, the filter plate 13 can be rotated to separate it from the connecting rod one 14. This way is convenient for replacing the filter plate 13.

[0031] Please refer to the attached drawings Figure 5 The inner part of the filter plate 13 is rotatably connected with a rotating shaft 16 and is penetrated by the rotating shaft 16, and the outer wall of the rotating shaft 16 is fixedly connected with a cleaning scraper 17.

[0032] Specifically, the cleaning scraper 17 can be further increased. The cleaning scraper 17 rotates in close contact with the outer wall of the filter plate 13, and the rotating shaft 16 supports the rotation of the cleaning scraper 17. The rotation of the cleaning scraper 17 peels off the impurities on the outer wall of the filter plate 13, avoids the blockage of the filter plate 13, and ensures the normal flow of the liquid.

[0033] Please refer to the attached drawings Figure 5 The cleaning scraper 17 is in the shape of a spiral line.

[0034] Specifically, the cleaning scraper 17 is provided in a helical line shape, and when the cleaning scraper 17 rotates, the impurities can be gradually pushed away, and in particular, the cleaning scraper 17 in the shape of an Archimedes spiral generates a continuous radial outward pushing force when rotating, thereby gradually pushing the impurities away from the center.

[0035] Please refer to the accompanying drawings Figure 5 The outer wall of the rotating shaft 16 is fixedly connected with a turbine 19, and the turbine 19 is located in the interior of the upper cover 12.

[0036] Specifically, in the embodiment, a turbine 19 can be added to the outer wall of the rotating shaft 16, and when the water flow impacts the turbine 19, the turbine 19 rotates to drive the rotating shaft 16 to rotate, thereby driving the cleaning scraper 17 to rotate, and the turbine 19 can be selectively arranged at the rear side of the filter plate 13, that is, the water flow after filtration is used to impact, so as to avoid the turbine 19 from being stuck.

[0037] Please refer to the accompanying drawings Figure 6 The outer wall of the rotating shaft 16 is fixedly connected with a connecting rod two 18, and both ends of the connecting rod two 18 are fixedly connected with the rotating plate 7.

[0038] Specifically, an embodiment is further provided, that is, the connecting rod two 18 is driven to rotate by the rotating plate 7, the connecting rod two 18 is fixedly connected with the rotating shaft 16, and the rotating shaft 16 is driven to rotate, thereby driving the cleaning scraper 17 to rotate.

[0039] Please refer to the accompanying drawings Figure 3 -Appendix Figure 4 The interior of the miscellaneous collection box 11 is provided with a blowdown port 15, and the baffle of the blowdown port 15 is transparently arranged; the interior of the miscellaneous collection box 11 and the upper cover 12 is installed with a water inlet pipe 20, and the outer wall of the water inlet pipe 20 is fixedly connected with a flange.

[0040] Specifically, the baffle of the blowdown port 15 is bolted or clamped with the miscellaneous collection box 11, and when too much impurities are observed, the baffle can be disassembled for cleaning; the water inlet pipe 20 is connected with the external pipeline through the flange.

[0041] In addition, sealing structures can be used in many structures in the present application, but the sealing problems of the present application can be solved by using existing technologies, such as various sealing gaskets and O-rings.

[0042] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A parallel-coupled magnetic pump, comprising a first housing (1) and a second housing (2), characterized in that, The outer walls of both the first outer shell (1) and the second outer shell (2) are bolted with a fixing frame (3). The fixing frame (3) is located between the first outer shell (1) and the second outer shell (2). The fixing frame (3) is fixedly connected to the inside of the fixing frame (3). The mounting frame (4) is installed inside the mounting frame (4). The inside of both the first outer shell (1) and the second outer shell (2) is rotatably connected with a rotating plate (7). The outer wall of the rotating plate (7) near the stator winding assembly (5) is fixedly connected with a permanent magnet rotor (21). The outer wall of the rotating plate (7) away from the stator winding assembly (5) is fixedly connected with an impeller (8). The outer walls of both the first outer shell (1) and the second outer shell (2) are fixedly connected with a water outlet (9) and a water inlet (10). The outer wall of the water outlet (9) is fixedly connected with a flange.

2. The parallel-coupled magnetic pump according to claim 1, characterized in that, The outer walls on both sides of the mounting bracket (4) are bolted with isolation sealing plates (6).

3. A parallel-coupled magnetic pump according to claim 2, characterized in that, The outer wall of the water inlet (10) is fixedly connected to a collection box (11), and the upper surface of the collection box (11) is bolted to a cover (12).

4. A parallel-coupled magnetic pump according to claim 3, characterized in that, The upper cover (12) is internally fixedly connected to a connecting rod (14), and the bottom end of the connecting rod (14) is bolted or threaded to a filter plate (13).

5. A parallel-coupled magnetic pump according to claim 4, characterized in that, The filter plate (13) is rotatably connected to a rotating shaft (16) and is penetrated by the rotating shaft (16). A cleaning scraper (17) is fixedly connected to the outer wall of the rotating shaft (16).

6. A parallel-coupled magnetic pump according to claim 5, characterized in that, The cleaning scraper (17) is spiral-shaped.

7. A parallel-coupled magnetic pump according to claim 6, characterized in that, A turbine (19) is fixedly connected to the outer wall of the shaft (16), and the turbine (19) is located inside the cover (12).

8. A parallel-coupled magnetic pump according to claim 6, characterized in that, The outer wall of the rotating shaft (16) is fixedly connected to a connecting rod two (18), and both ends of the connecting rod two (18) are fixedly connected to the rotating plate (7).

9. A parallel-coupled magnetic pump according to claim 7 or 8, characterized in that, The inside of the collection box (11) is provided with a drain outlet (15), and the baffle of the drain outlet (15) is transparent.

10. A parallel-coupled magnetic pump according to claim 9, characterized in that, The inside of the collection box (11) and the top cover (12) is equipped with a water inlet pipe (20), and the outer wall of the water inlet pipe (20) is fixedly connected with a flange.

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