CN218376717U - Magnetic coupling supercharging mechanism driven by residual pressure energy - Google Patents

Abstract

The utility model discloses a residual pressure can driven magnetic coupling supercharging mechanism, including setting gradually axial compressor turbine impeller and the water conservancy diversion piece of being connected through first pivot and axial compressor turbine impeller on the conveyer pipe, axial compressor turbine device has seted up the water conservancy diversion hole on the water conservancy diversion piece. The rotating speed of the axial flow turbine impeller is increased by arranging the flow guide sheet provided with the flow guide hole, so that the rotating speed of the driving centrifugal impeller is increased, and small-flow water supply can be promoted to a higher pressure head through the flow guide hole; through the centrifugal pump device, the small-flow water supply can be improved to a higher pressure head, and the energy conversion efficiency is effectively improved. The magnetic coupling device comprises a rotor part sealing cylinder and an axial flow turbine rotor part and a centrifugal pump rotor part which are arranged in the rotor part sealing cylinder at intervals, so that the sealing performance is guaranteed, the complicated shaft seal is omitted, the assembly difficulty is reduced, the friction resistance is reduced, and the energy conversion efficiency is further improved.

Description

Magnetic coupling supercharging mechanism driven by residual pressure energy

Technical Field

The utility model relates to a magnetic force coupling pressure boost technical field, concretely relates to residual pressure can driven magnetic force coupling booster mechanism.

Background

In industry and life, an electric energy drive pump is generally adopted to lift a pressure head of water to pressurize the water, and as water and industrial drainage in rivers in nature have certain mechanical energy including kinetic energy and pressure energy, the mechanical energy of the water is directly utilized to drive the pump, so that the electric energy consumption is reduced, and energy conservation, emission reduction and low-carbon emission are realized.

The traditional energy-saving water elevator adopts a mechanical shaft seal for sealing, and the sealing effect is poor; meanwhile, when the energy-saving water elevator performs energy conversion, the kinetic energy of water flow is converted into mechanical energy of the piston by adopting the connecting device, the piston and the piston cylinder, and the pressure energy of water is increased by the mechanical energy, so that the energy conversion efficiency is lower.

The existing magnetic coupling pump device driven by residual pressure energy utilizes the residual pressure energy of water in a pipeline to drive an axial flow impeller, and drives a centrifugal impeller to rotate through magnetic coupling, thereby realizing acting. However, the magnetic coupling device has a complex structure, needs to overcome magnetic field force during assembly, and is difficult to realize positioning.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in the defect that the water supercharging device leakproofness among the prior art is poor, energy conversion efficiency is low to a magnetic coupling supercharging mechanism that residual pressure can be driven is provided.

In order to solve the technical problem, the technical scheme of the utility model as follows:

a residual pressure energy driven magnetic coupling supercharging mechanism comprises:

the conveying pipe is sequentially provided with an axial flow turbine outlet, an axial flow turbine inlet and a centrifugal pump water inlet; the outlet of the axial flow turbine and the water inlet of the centrifugal pump are respectively positioned at two end parts of the conveying pipe;

the axial flow turbine device is arranged at one end, close to the outlet of the axial flow turbine, of the conveying pipe and comprises an axial flow turbine impeller and a flow guide sheet, the axial flow turbine impeller is arranged close to the outlet of the axial flow turbine, the flow guide sheet is located between the inlet of the axial flow turbine and the axial flow turbine impeller, and flow guide holes are formed in the flow guide sheet and correspond to the axial flow turbine impeller;

the magnetic coupling device is arranged in the middle of the conveying pipe through a rotor part sealing cylinder and comprises an axial flow turbine rotor part and a centrifugal pump rotor part which are arranged in the rotor part sealing cylinder at intervals; the axial flow turbine rotor component can drive the centrifugal pump rotor component to rotate through magnetic force, and the axial flow turbine rotor component is connected with the axial flow turbine impeller through a first rotating shaft;

the centrifugal pump device is arranged at one end, close to the water inlet of the centrifugal pump, of the conveying pipe, and comprises a centrifugal volute and a centrifugal impeller, wherein the centrifugal impeller is arranged in the centrifugal volute and connected with a rotor component of the centrifugal pump through a second rotating shaft, and a centrifugal pump water outlet communicated with the water inlet of the centrifugal pump is formed in the centrifugal volute.

Furthermore, the guide holes are uniformly distributed on the guide plate in the circumferential direction, and the guide holes are axially obliquely arranged and correspond to the axial flow turbine impeller.

Furthermore, the axial flow turbine rotor part and the centrifugal pump rotor part are both disc structures; the two disc structures are coaxially arranged in the rotor component sealing cylinder, a plurality of permanent magnets which are alternately arranged in an N-level mode and an S-level mode are arranged on one opposite side of each disc structure, and the permanent magnets are evenly arranged on the disc structures at intervals in the circumferential direction.

Further, the rotor part sealing barrel comprises a centrifugal pump rotor sealing shell and an axial flow turbine rotor sealing shell, the centrifugal pump rotor sealing shell corresponds to the centrifugal pump rotor part, the axial flow turbine rotor sealing shell corresponds to the axial flow turbine rotor part, and the centrifugal pump rotor sealing shell and the axial flow turbine rotor sealing shell are fixedly connected through a magnetic coupling flange.

Furthermore, the centrifugal pump rotor sealing shell and the axial flow turbine rotor sealing shell are fixed with a partition plate through the magnetic coupling flange, and gaps are formed among the partition plate, the centrifugal pump rotor sealing shell and the axial flow turbine rotor sealing shell.

Further, a first sealing element is arranged at the joint of the first rotating shaft and the axial flow turbine rotor sealing shell; and a second sealing element is arranged at the joint of one end of the second rotating shaft and the sealing shell of the centrifugal pump rotor and the joint of the other end of the second rotating shaft and the centrifugal pump device.

Furthermore, the conveying pipe comprises a first pipe body, a second pipe body, a third pipe body and a fourth pipe body which are arranged in sequence; the second pipe body is L-shaped, one end of the first pipe body is connected with one end of the second pipe body through an axial flow turbine flange, the third pipe body is connected between the second pipe body and the rotor part sealing barrel, and the fourth pipe body is connected between the rotor part sealing barrel and the centrifugal pump device; the axial flow turbine inlet is positioned at the other end of the second pipe body, the axial flow turbine outlet is positioned at the other end of the first pipe body, and the axial flow turbine impeller is positioned in the first pipe body; the guide vane is fixed between the first pipe body and the second pipe body through the axial flow turbine flange.

Furthermore, a first bearing penetrating through the first rotating shaft is arranged in the third pipe body; and a second bearing arranged on the second rotating shaft in a penetrating manner is arranged in the fourth pipe body.

Furthermore, a filter screen is arranged on a water inlet of the centrifugal pump.

Furthermore, the partition plate is made of Hastelloy materials.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a residual pressure can driven magnetic coupling booster mechanism makes axial compressor turbine impeller drive axial compressor turbine rotor part through first pivot and rotates, drives the centrifugal pump rotor part through axial compressor turbine rotor part and rotates, can drive centrifugal impeller through the second pivot and rotate, realizes the transmission of mechanical energy, compares current residual pressure can driven magnetic coupling pump unit, has reduced the intermediate link that mechanical energy turned into electric energy, has improved energy conversion efficiency, has improved the utilization efficiency of the energy. The flow guide sheet provided with the flow guide holes is arranged, so that large-flow water flows to the axial flow turbine impeller from the flow guide holes after passing through the inlet of the axial flow turbine, the flow speed of the water flow can be increased, the rotating speed of the axial flow turbine impeller is increased, the rotating speed of the driving centrifugal impeller is increased, and small-flow water supply can be improved to a higher pressure head through the flow guide holes; the rotation of the centrifugal impeller enables water flow to enter the centrifugal volute from the water inlet of the centrifugal pump, mechanical energy of the water with large flow and low pressure head is transferred to the centrifugal pump device, the water flow flows out from the water outlet of the centrifugal pump, the small flow of water supply can be improved to a higher pressure head, and the energy conversion efficiency is effectively improved. The axial flow turbine rotor part and the centrifugal pump rotor part are arranged in the rotor part sealing barrel at intervals, so that the sealing performance is ensured, the complicated shaft seal is omitted, the assembly difficulty is reduced, the friction resistance is reduced, and the energy conversion efficiency is further improved.

2. The utility model provides a residual pressure can driven magnetic coupling booster mechanism, circumference evenly distributed has a plurality ofly on the water conservancy diversion hole is on the water conservancy diversion piece, and a plurality of water conservancy diversion holes are the axial slope setting, and a plurality of water conservancy diversion holes correspond the setting with axial compressor turbine impeller. By the arrangement, the rotating speed of the axial flow turbine impeller can be enhanced through the plurality of flow guide holes, and the energy conversion efficiency is further improved; meanwhile, the plurality of flow guide holes are axially and obliquely arranged and correspond to the axial flow turbine impeller, so that the angle of water flow impacting the axial flow turbine impeller can be changed, the rotating speed of the axial flow turbine impeller can be further improved, and the energy conversion efficiency is improved.

3. The utility model provides a magnetic coupling supercharging mechanism driven by residual pressure energy, wherein, the axial flow turbine rotor part and the centrifugal pump rotor part are both disc structures; two disc structures are coaxially arranged in the rotor part sealing barrel, a plurality of permanent magnets which are alternately arranged in an N-level mode and an S-level mode are arranged on one side, opposite to each other, of the two disc structures, and the plurality of permanent magnets are evenly arranged on the disc structures in the circumferential direction at intervals. By the arrangement, the positioning can be facilitated through the disc structure; a plurality of permanent magnet circumference equidistant distribution is structural at the disc, and with N level and S level alternate arrangement, when rivers impact axial compressor turbine wheel, axial compressor turbine wheel rotates, and then rotate through axial compressor turbine wheel pivot drive axial compressor turbine rotor part, make the magnetic flux change, the magnetic field is rotatory, through magnetic coupling device, the centrifugal pump rotor part rotates, rotate through second pivot drive centrifugal impeller, introduce water from the centrifugal pump water inlet, flow from the centrifugal pump delivery port, the pressure head of lift water, thereby realize the pressure boost effect.

4. The utility model provides a residual pressure can driven magnetic force coupling supercharging mechanism, the sealed section of thick bamboo of rotor part include correspond the centrifugal pump rotor seal shell that sets up with the centrifugal pump rotor part and correspond the axial compressor turbine rotor seal shell that sets up with axial compressor turbine rotor part, and it is fixed through magnetic force coupling flange joint between centrifugal pump rotor seal shell and the axial compressor turbine rotor seal shell. So set up, can realize the location of centrifugal pump rotor part and axial compressor turbine rotor part through the magnetic coupling flange, and be convenient for installation and dismantlement.

5. The utility model provides a magnetic force coupling booster mechanism that excess pressure can drive, centrifugal pump rotor seal shell and axial compressor turbine rotor seal shell are fixed with the baffle through the magnetic force coupling flange, all have the clearance between baffle and centrifugal pump rotor seal shell and the axial compressor turbine rotor seal shell. So set up, can guarantee the leakproofness of centrifugal pump rotor part and axial compressor turbine rotor part in the sealed section of thick bamboo of rotor part through the baffle.

6. The utility model provides a magnetic coupling supercharging mechanism driven by residual pressure, wherein a first sealing element is arranged at the joint of a first rotating shaft and a sealing shell of an axial flow turbine rotor; and a second sealing element is arranged at the joint of one end of the second rotating shaft and the sealing shell of the centrifugal pump rotor and the joint of the other end of the second rotating shaft and the centrifugal pump device. By the arrangement, the sealing performance of the joint of a rotating shaft and the axial flow turbine rotor sealing shell can be ensured through the first sealing element; through two second sealing joints, the sealing performance of the joint of one end of the second rotating shaft and the sealing shell of the centrifugal pump rotor and the sealing performance of the joint of the other end of the second rotating shaft and the centrifugal pump device can be guaranteed.

7. The utility model provides a magnetic coupling booster mechanism that excess pressure can be driven, the one end of first body is passed through axial compressor turbine flange and is connected with the one end of second body, and the water conservancy diversion piece is fixed in between first body and the second body through axial compressor turbine flange, so sets up, can guarantee the stability of water conservancy diversion piece.

8. The utility model provides a magnetic coupling supercharging mechanism driven by residual pressure energy, wherein a first bearing penetrating through a first rotating shaft is arranged in a third pipe body; a second bearing penetrating on the second rotating shaft is arranged in the fourth pipe body. By the arrangement, the rotating effect of the first rotating shaft can be ensured through the first bearing, and the first rotating shaft can be supported; the rotating effect of the second rotating shaft can be guaranteed through the second bearing, and meanwhile the second rotating shaft can be supported.

9. The utility model provides a magnetic coupling supercharging mechanism that excess pressure can be driven, baffle adopt the hastelloy material to make, so set up, can avoid the baffle to influence the magnetic force transmission to guarantee the magnetic drive effect of axial compressor turbine rotor part to the centrifugal pump rotor part.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a three-dimensional structure view of a magnetic coupling supercharging mechanism driven by residual pressure energy provided by the embodiment of the present invention;

fig. 2 is an exploded view of a magnetic coupling pressurizing mechanism driven by residual pressure energy provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the magnetic coupling pressurizing mechanism driven by residual pressure energy in this embodiment;

fig. 4 is a schematic view showing the connection of the centrifugal pump unit and the rotor parts of the centrifugal pump in the present embodiment;

FIG. 5 is a schematic view showing the connection between the magnetic coupling device and the centrifugal pump device in this embodiment;

FIG. 6 is a perspective view of the magnetic coupling device in this embodiment;

fig. 7 is a perspective view of the baffle of the present embodiment.

Description of reference numerals:

0. a delivery pipe; 01. a first pipe body; 02. a second tube body; 03. a third tube; 04. a fourth tube body; 1. an axial flow turbine unit; 11. an axial flow turbine inlet; 12. an axial flow turbine outlet; 13. a first rotating shaft; 14. a flow deflector; 15. an axial flow turbine flange; 16. an axial flow turbine wheel; 17. a flow guide hole; 18. a first fixing member; 119. a first bearing; 2. a magnetic coupling device; 21. an axial turbine rotor component; 22. a centrifugal pump rotor component; 23. a second fixing member; 24. a permanent magnet; 25. a partition plate; 26. a centrifugal pump rotor seal housing; 27. a magnetic coupling flange; 28. axial flow turbine rotor seal housing; 29. a first seal member; 3. a centrifugal pump unit; 31. a centrifugal impeller; 32. a filter screen; 33. a second rotating shaft; 34. a water inlet of the centrifugal pump; 35. a water outlet of the centrifugal pump; 36. a centrifugal volute; 37. a second seal member; 38. a second bearing.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The magnetic coupling pressurizing mechanism driven by residual pressure energy as shown in fig. 1-7 comprises a conveying pipe 0, and an axial flow turbine device 1, a magnetic coupling device 2 and a centrifugal pump device 3 which are sequentially arranged on the conveying pipe 0. The conveying pipe 0 is sequentially provided with an axial flow turbine outlet 12, an axial flow turbine inlet 11 and a centrifugal pump water inlet 34. The axial flow turbine device 1 is arranged close to the axial flow turbine outlet 12 and comprises an axial flow turbine impeller 16 arranged close to the axial flow turbine outlet 12, a first rotating shaft 13 connected with the axial flow turbine impeller 16 and a guide vane 14 arranged on the first rotating shaft 13 in a penetrating mode and located between the axial flow turbine inlet 11 and the axial flow turbine impeller 16, and guide holes 17 are formed in the guide vane 14. The magnetic coupling device 2 comprises a rotor sealed shell, and an axial flow turbine rotor part 21 and a centrifugal pump rotor part 22 which are arranged in the rotor sealed shell; the opposite sides of the axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 are respectively provided with a plurality of permanent magnets 24 which are alternately arranged in N stages and S stages; a partition 25 is provided between the axial turbine rotor member 21 and the centrifugal pump rotor member 22. The centrifugal pump device 3 is arranged close to a centrifugal pump water inlet 34 and comprises a centrifugal volute 36 communicated with the conveying pipe 0, a centrifugal impeller 31 rotatably installed in the centrifugal volute 36 and a second rotating shaft 33 connected between the centrifugal impeller 31 and the centrifugal pump rotor part 22; a centrifugal pump water outlet 35 is formed in the centrifugal volute 36; the second shaft 33 is arranged between the centrifugal impeller 31 and the centrifugal pump rotor part 22.

This kind of magnetic coupling booster mechanism that residual pressure energy driven makes axial compressor turbine impeller 16 drive axial compressor turbine rotor part 21 through first pivot 13 and rotates, drives centrifugal pump rotor part 22 through axial compressor turbine rotor part 21 and rotates, can drive centrifugal impeller 31 through second pivot 33 and rotate, realizes the transmission of mechanical energy, compares current magnetic coupling pump device that residual pressure energy driven, has reduced the intermediate link that mechanical energy turned into electric energy, has improved energy conversion efficiency, has improved the utilization efficiency of the energy. By arranging the guide vane 14 provided with the guide hole 17, large-flow water flows from the guide hole 17 to the axial flow turbine impeller 16 after passing through the axial flow turbine inlet 11, so that the flow speed of the water flow can be increased, the rotating speed of the axial flow turbine impeller 16 is increased, the rotating speed of the driving centrifugal impeller 31 is increased, and small-flow water supply can be increased to a higher pressure head through the guide hole 17; the rotation of the centrifugal impeller 31 enables water flow to enter the centrifugal volute 36 from the water inlet 34 of the centrifugal pump, the mechanical energy of the high-flow low-pressure-head water is transferred to the centrifugal pump device 3, the water flow flows out from the water outlet 35 of the centrifugal pump, the low-flow water supply can be improved to a higher pressure head, and the energy conversion efficiency is effectively improved. The axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 are arranged in the rotor part sealing barrel at intervals, so that the sealing performance is ensured, the complicated shaft seal is omitted, the assembling difficulty is reduced, the friction resistance is reduced, and the energy conversion efficiency is further improved.

In this embodiment, the conveying pipe 0 includes a first pipe 01, a second pipe 02, a third pipe 03, and a fourth pipe 04, which are sequentially disposed; the second body 02 is the L type, the one end of first body 01 is passed through axial compressor turbine flange 15 and is cooperated first mounting 18 and is connected with the one end of second body 02, third body 03 is connected between second body 02 and rotor part seal cartridge, fourth body 04 is connected between rotor part seal cartridge and centrifugal pump unit 3, specifically, be provided with filter screen 32 that is located centrifugal pump water inlet 34 on the fourth body 04, make filter screen 32 be located centrifugal pump water inlet 34 department, can filter the impurity in the aquatic and isolate. An axial flow turbine inlet 11 is located at the other end of the second tube 02, an axial flow turbine outlet 12 is located at the other end of the first tube 01, and an axial flow turbine impeller 16 is located within the first tube 01. Specifically, the guide vane 14 is fixed between the first pipe 01 and the second pipe 02 through the axial turbine flange 15, and thus, the stability of the guide vane 14 can be ensured. In particular, the first fixing element 18 is a threaded rod and a locking screw suitable for fastening the axial turbine flange 15.

In this embodiment, six diversion holes 17 are uniformly distributed on the diversion piece 14 in the circumferential direction, the number of the blades of the axial flow turbine impeller 16 is the same as that of the diversion holes 17 on the diversion piece 14, and the six diversion holes 17 are all arranged in an axially inclined manner; the six guide holes 17 are arranged corresponding to the six blades on the axial flow turbine impeller 16. By the arrangement, the rotating speed of the axial flow turbine impeller 16 can be enhanced through the diversion holes 17, and the energy conversion efficiency is further improved; meanwhile, the six diversion holes 17 are axially and obliquely arranged and correspond to the axial flow turbine impeller 16, so that the angle of water flow impacting the axial flow turbine impeller 16 can be changed, the rotating speed of the axial flow turbine impeller 16 can be further improved, and the energy conversion efficiency is improved.

In this embodiment, a first bearing 119 disposed through the first rotating shaft 13 is disposed in the third tube 03; a second bearing 38 is disposed in the fourth tube 04 and passes through the second shaft 33. With such an arrangement, the first bearing 119 can ensure the rotating effect of the first rotating shaft 13, and can support the first rotating shaft 13; the second bearing 38 can ensure the rotating effect of the second rotating shaft 33, and can support the second rotating shaft 33.

In the present embodiment, the axial turbine rotor part 21 and the centrifugal pump rotor part 22 are both disc structures; the two disc structures are coaxially arranged in the rotor part sealing cylinder, six permanent magnets 24 which are alternately arranged in an N-level mode and an S-level mode are arranged on one opposite sides of the two disc structures, and the six permanent magnets 24 are evenly arranged on the same disc structure in the circumferential direction at intervals. According to the arrangement, the axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 are both arranged in a disc structure, so that the axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 can be conveniently positioned when being installed, the plurality of permanent magnets 24 are circumferentially distributed on the disc structure at equal intervals and are alternately arranged in N stages and S stages, when water flow impacts the axial flow turbine impeller 16, the axial flow turbine impeller 16 rotates, the axial flow turbine rotor part 21 is driven to rotate through the rotating shaft of the axial flow turbine impeller 16, so that the magnetic flux is changed, the magnetic field rotates, the centrifugal pump rotor part 22 rotates through the magnetic coupling device 2, the centrifugal impeller 31 is driven to rotate through the second rotating shaft 33, water is introduced from the centrifugal pump water inlet 34 and flows out from the centrifugal pump water outlet 35, the pressure head of the water is lifted, and the pressurization effect is achieved; meanwhile, the centrifugal impeller 31 is utilized to increase the small-flow water supply to a higher pressure head, and the device can be applied to the fields of farmland irrigation, sewage purification, seawater reverse osmosis membrane desalination and the like.

In this embodiment, the rotor component sealing cylinder includes a centrifugal pump rotor sealing housing 26 disposed corresponding to the centrifugal pump rotor component 22 and an axial turbine rotor sealing housing 28 disposed corresponding to the axial turbine rotor component 21, and the centrifugal pump rotor sealing housing 26 and the axial turbine rotor sealing housing 28 are fixedly connected through a magnetic coupling flange 27 and a second fixing member 23. So set up, can realize the location of centrifugal pump rotor part 22 and axial compressor turbine rotor part 21 through magnetic coupling flange 27, and easy to assemble and dismantle. In particular, the second fixing member 23 is a screw and a locking screw adapted to fasten the magnetic coupling flange 27.

In the embodiment, the centrifugal pump rotor seal housing 26 and the axial flow turbine rotor seal housing 28 are fixed with the partition plate 25 through the magnetic coupling flange 27, and gaps exist between the partition plate 25 and the centrifugal pump rotor seal housing 26 and the axial flow turbine rotor seal housing 28. So arranged, the sealing performance of the centrifugal pump rotor part 22 and the axial flow turbine rotor part 21 in the rotor part sealing cylinder can be ensured through the partition plate 25. Specifically, the partition plate 25 is made of hastelloy materials, and the partition plate 25 can be prevented from influencing magnetic force transmission, so that the magnetic driving effect of the axial flow turbine rotor part 21 on the centrifugal pump rotor part 22 is ensured.

In this embodiment, a first seal 29 is provided at the junction of the first shaft 13 and the axial turbine rotor seal housing 28. The second rotating shaft 33 is connected between the centrifugal pump rotor seal housing 26 and the centrifugal impeller 31, and the joints of the two ends are provided with second sealing parts 37. With such an arrangement, the sealing performance of the joint of a rotating shaft and the axial flow turbine rotor sealing shell 28 can be ensured through the first sealing element 29; by means of the two second sealing joints, the sealing property of the joint of one end of the second rotating shaft 33 and the centrifugal pump rotor sealing shell 26 and the sealing property of the joint of the other end of the second rotating shaft 33 and the centrifugal pump device 3 can be ensured. And further, the centrifugal pump device 3 is not communicated with the inside of the axial flow turbine device 1, so that zero leakage of water is realized.

In the present embodiment, a first sealing member 29 is provided at the joint of the first rotating shaft 13 and the axial flow turbine rotor sealing housing 28; and a second sealing element 37 is arranged at the joint of one end of the second rotating shaft 33 and the centrifugal pump rotor sealing shell 26 and the joint of the other end of the second rotating shaft 33 and the centrifugal pump device 3. With such an arrangement, the sealing performance of the joint of a rotating shaft and the axial flow turbine rotor sealing shell 28 can be ensured through the first sealing element 29; by means of the two second sealing joints, the sealing property of the joint of one end of the second rotating shaft 33 and the centrifugal pump rotor sealing shell 26 and the sealing property of the joint of the other end of the second rotating shaft 33 and the centrifugal pump device 3 can be ensured.

The working principle is as follows:

drainage flows in from the axial flow turbine inlet 11, sequentially passes through the second pipe body 02 and the first pipe body 01, then flows out from the axial flow turbine outlet 12, when large-flow water flows into the second pipe body 02, the large-flow water impacts the axial flow turbine impeller 16, the axial flow turbine impeller 16 rotates, the axial flow turbine rotor component 21 is driven to rotate through the first rotating shaft 13, magnetic flux is changed, and a magnetic field rotates. The centrifugal pump rotor part 22 senses the change of the magnetic flux and then rotates, the rotating direction of the centrifugal pump rotor part is the same as the rotating direction of the magnetic field, the centrifugal impeller 31 is driven to rotate through the second rotating shaft 33 to do work, water is introduced from the centrifugal pump water inlet 34, water flows out from the centrifugal pump water outlet 35, the pressure head of the water is improved, and the supercharging effect is achieved.

In summary, in the magnetic coupling supercharging mechanism driven by the residual pressure energy, the axial flow turbine impeller 16 drives the axial flow turbine rotor part 21 to rotate through the first rotating shaft 13, the centrifugal pump rotor part 22 is driven to rotate through the axial flow turbine rotor part 21, and the centrifugal impeller 31 can be driven to rotate through the second rotating shaft 33, so that the transmission of mechanical energy is realized. By arranging the guide vane 14 provided with the guide hole 17, large-flow water flows from the guide hole 17 to the axial flow turbine impeller 16 after passing through the axial flow turbine inlet 11, so that the flow speed of the water flow can be increased, the rotating speed of the axial flow turbine impeller 16 is increased, the rotating speed of the driving centrifugal impeller 31 is increased, and small-flow water supply can be increased to a higher pressure head through the guide hole 17; the rotation of the centrifugal impeller 31 enables water flow to enter the centrifugal volute 36 from the water inlet 34 of the centrifugal pump, the mechanical energy of the high-flow low-pressure-head water is transferred to the centrifugal pump device 3, the water flow flows out from the water outlet 35 of the centrifugal pump, the low-flow water supply can be improved to a higher pressure head, and the energy conversion efficiency is effectively improved. The axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 are arranged in the rotor part sealing barrel at intervals, so that the sealing performance is ensured, the complicated shaft seal is omitted, the assembling difficulty is reduced, the friction resistance is reduced, and the energy conversion efficiency is further improved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (10)

1. The utility model provides a residual pressure can driven magnetic coupling booster mechanism which characterized in that includes:

the conveying pipe (0) is sequentially provided with an axial flow turbine outlet (12), an axial flow turbine inlet (11) and a centrifugal pump water inlet (34); the axial flow turbine outlet (12) and the centrifugal pump water inlet (34) are respectively positioned at two ends of the conveying pipe (0);

the axial flow turbine device (1) is arranged at one end, close to the axial flow turbine outlet (12), of the conveying pipe (0), and comprises an axial flow turbine impeller (16) close to the axial flow turbine outlet (12) and a flow deflector (14) located between the axial flow turbine inlet (11) and the axial flow turbine impeller (16), wherein flow guide holes (17) corresponding to the axial flow turbine impeller (16) are formed in the flow deflector (14);

the magnetic coupling device (2) is arranged in the middle of the conveying pipe (0) through a rotor part sealing cylinder and comprises an axial flow turbine rotor part (21) and a centrifugal pump rotor part (22) which are arranged in the rotor part sealing cylinder at intervals; the axial flow turbine rotor part (21) can drive the centrifugal pump rotor part (22) to rotate through magnetic force, and the axial flow turbine rotor part (21) is connected with the axial flow turbine impeller (16) through a first rotating shaft (13);

the centrifugal pump device (3) is arranged at one end, close to the centrifugal pump water inlet (34), of the conveying pipe (0), comprises a centrifugal volute (36) and a centrifugal impeller (31) which is arranged in the centrifugal volute (36) and connected with the centrifugal pump rotor component (22) through a second rotating shaft (33), and a centrifugal pump water outlet (35) communicated with the centrifugal pump water inlet (34) is formed in the centrifugal volute (36).

2. The residual pressure energy-driven magnetic coupling supercharging mechanism according to claim 1, wherein the plurality of guide holes (17) are uniformly distributed on the guide vane (14) in the circumferential direction, and the plurality of guide holes (17) are axially inclined and arranged corresponding to the axial flow turbine impeller (16).

3. The residual pressure energy driven magnetic coupling supercharging mechanism according to claim 1, characterized in that the axial turbine rotor component (21) and the centrifugal pump rotor component (22) are both of a disc structure; the two disc structures are coaxially arranged in the rotor part sealing cylinder, a plurality of permanent magnets (24) which are alternately arranged in an N-level mode and an S-level mode are arranged on one opposite sides of the two disc structures, and the permanent magnets (24) are evenly arranged on the disc structures in the circumferential direction at intervals.

4. The residual pressure energy-driven magnetic coupling pressurization mechanism is characterized in that the rotor component sealing barrel comprises a centrifugal pump rotor sealing shell (26) arranged corresponding to the centrifugal pump rotor component (22) and an axial flow turbine rotor sealing shell (28) arranged corresponding to the axial flow turbine rotor component (21), and the centrifugal pump rotor sealing shell (26) and the axial flow turbine rotor sealing shell (28) are fixedly connected through a magnetic coupling flange (27).

5. The residual pressure energy-driven magnetic coupling pressurization mechanism according to claim 4, characterized in that a partition plate (25) is fixed on the centrifugal pump rotor sealing housing (26) and the axial flow turbine rotor sealing housing (28) through the magnetic coupling flange (27), and a gap exists between the partition plate (25) and the centrifugal pump rotor sealing housing (26) and the axial flow turbine rotor sealing housing (28).

6. The residual pressure energy driven magnetic coupling supercharging mechanism according to claim 4, characterized in that a first seal (29) is provided at the connection of the first shaft (13) and the axial flow turbine rotor seal housing (28); and a second sealing element (37) is arranged at the joint of one end of the second rotating shaft (33) and the centrifugal pump rotor sealing shell (26) and the joint of the other end of the second rotating shaft (33) and the centrifugal pump device (3).

7. The residual pressure energy driven magnetic coupling supercharging mechanism according to claim 1, characterized in that the delivery pipe (0) comprises a first pipe body (01), a second pipe body (02), a third pipe body (03) and a fourth pipe body (04) arranged in this order; the second pipe body (02) is L-shaped, one end of the first pipe body (01) is connected with one end of the second pipe body (02) through an axial flow turbine flange (15), the third pipe body (03) is connected between the second pipe body (02) and the rotor part sealing barrel, and the fourth pipe body (04) is connected between the rotor part sealing barrel and the centrifugal pump device (3); the axial flow turbine inlet (11) is positioned at the other end of the second pipe body (02), the axial flow turbine outlet (12) is positioned at the other end of the first pipe body (01), and the axial flow turbine impeller (16) is positioned in the first pipe body (01); the guide vane (14) is fixed between the first pipe body (01) and the second pipe body (02) through the axial flow turbine flange (15).

8. The residual pressure energy-driven magnetic coupling supercharging mechanism according to claim 7, characterized in that a first bearing (119) disposed through the first rotating shaft (13) is disposed in the third pipe (03); and a second bearing (38) penetrating through the second rotating shaft (33) is arranged in the fourth pipe body (04).

9. The residual pressure energy-driven magnetic coupling supercharging mechanism according to claim 1, characterized in that a filter screen (32) is arranged on the centrifugal pump water inlet (34).

10. The residual-pressure-energy-driven magnetically-coupled booster mechanism according to claim 5, characterized in that the partition plate (25) is made of hastelloy material.

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