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

Abstract

The utility model discloses a magnetic coupling supercharging mechanism driven by excess pressure energy, which comprises an axial flow turbine device, a magnetic coupling device and a magnetic pump device sequentially arranged on a conveying pipe, and the axial flow turbine device includes an axial flow turbine impeller and a guide vane connected with the axial flow turbine impeller through the first rotating shaft, and guide holes are opened on the guide vane. By setting guide vanes with guide holes to increase the speed of the axial flow turbine impeller, and then increase the speed of driving the centrifugal impeller, the small flow of water can be raised to a higher pressure head through the guide holes; through the centrifugal pump device, the small The flow of feed water is increased to a higher pressure head, which effectively improves the energy conversion efficiency. The magnetic coupling device includes the rotor part sealing cylinder and the axial flow turbine rotor part and the centrifugal pump rotor part which are arranged at intervals in the rotor part sealing cylinder. This arrangement ensures the sealing performance, saves the complicated shaft seal and reduces the difficulty of assembly , while reducing frictional resistance and further improving energy conversion efficiency.

Description

A magnetically coupled booster mechanism driven by residual pressure energy

technical field

The utility model relates to the technical field of magnetic coupling supercharging, in particular to a magnetic coupling supercharging mechanism driven by residual pressure.

Background technique

In industry and life, electric energy is usually used to drive pumps to increase the pressure head of water to pressurize water. Since water in rivers in nature and industrial drainage have certain mechanical energy, including kinetic energy and pressure energy, the mechanical energy of water is directly used to drive the pump. , reduce power consumption, realize energy saving and emission reduction and low carbon emission.

Traditional energy-saving water lifters use mechanical shaft seals for sealing, and the sealing effect is poor; at the same time, when this energy-saving water lifter performs energy conversion, it uses connecting devices, pistons, and piston cylinders to convert the kinetic energy of water flow into pistons. The mechanical energy is used to increase the pressure energy of the water, and its energy conversion efficiency is relatively low.

The existing residual pressure energy-driven magnetic coupling pump device uses the residual pressure energy of water in the pipeline to drive the axial flow impeller, and drives the centrifugal impeller to rotate through magnetic coupling, thereby realizing work. However, the structure of the magnetic coupling device is complex, and the magnetic field force needs to be overcome during assembly, so it is difficult to achieve positioning.

Utility model content

Therefore, the technical problem to be solved by the utility model lies in the defects of poor sealing and low energy conversion efficiency of the water booster device in the prior art, so as to provide a magnetic coupling booster mechanism driven by residual pressure.

For solving the problems of the technologies described above, the technical scheme of the utility model is as follows:

A magnetically coupled supercharging mechanism driven by residual pressure, comprising:

The delivery pipe is provided with an axial flow turbine outlet, an axial flow turbine inlet and a centrifugal pump water inlet in sequence; the axial flow turbine outlet and the centrifugal pump water inlet are respectively located at the two ends of the delivery pipe ;

The axial flow turbine device is arranged on one end of the delivery pipe close to the outlet of the axial flow turbine, including an axial flow turbine impeller arranged close to the outlet of the axial flow turbine, located between the inlet of the axial flow turbine and A guide vane between the axial flow turbine impellers, the guide vanes are provided with guide holes corresponding to the axial flow turbine impellers;

The magnetic coupling device is arranged in the middle of the conveying pipe through the sealing cylinder of the rotor part, including the axial flow turbine rotor part and the centrifugal pump rotor part arranged at intervals in the rotor part sealing cylinder; the axial flow turbine rotor part can pass through The rotor part of the centrifugal pump is magnetically driven to rotate, and the rotor part of the axial flow turbine is connected to the impeller of the axial flow turbine through a first rotating shaft;

Centrifugal pump device, arranged on the delivery pipe at one end close to the water inlet of the centrifugal pump, comprising a centrifugal volute, a centrifugal impeller arranged in the centrifugal volute and connected to the rotor part of the centrifugal pump through a second rotating shaft , A centrifugal pump outlet connected to the centrifugal pump inlet is provided on the centrifugal volute.

Further, there are a plurality of guide holes evenly distributed in the circumferential direction of the guide vane, and the plurality of guide holes are arranged obliquely in the axial direction and corresponding to the axial flow turbine impeller.

Further, both the axial flow turbine rotor part and the centrifugal pump rotor part are disc structures; the two disc structures are coaxially arranged in the sealing cylinder of the rotor part, and the two disc structures A plurality of permanent magnets alternately arranged in N stages and S stages are arranged on opposite sides, and the plurality of permanent magnets are arranged at even intervals in the circumferential direction on the disc structure.

Further, the rotor part sealing cylinder includes a centrifugal pump rotor sealing shell corresponding to the centrifugal pump rotor part and an axial flow turbine rotor sealing shell corresponding to the axial flow turbine rotor part, the centrifugal pump The rotor sealing shell and the axial flow turbine rotor sealing shell are connected and fixed through a magnetic coupling flange.

Further, the sealed casing of the centrifugal pump rotor and the sealed casing of the axial flow turbine rotor are fixed with a partition through the magnetic coupling flange, and the partition is connected to the sealed casing of the centrifugal pump rotor and the axial flow turbine. There are gaps between the flat rotor seal shells.

Further, a first sealing member is provided at the connection between the first rotating shaft and the sealing casing of the axial turbine rotor; at the connection between one end of the second rotating shaft and the sealing casing of the centrifugal pump rotor, the first Second seals are provided at the joints between the other ends of the two rotating shafts and the centrifugal pump device.

Further, the delivery pipe includes a first pipe body, a second pipe body, a third pipe body and a fourth pipe body arranged in sequence; the second pipe body is L-shaped, and one end of the first pipe body passes through The flange of the axial flow turbine is connected to one end of the second pipe body, the third pipe body is connected between the second pipe body and the sealing cylinder of the rotor part, and the fourth pipe body is connected to the Between the sealing cylinder of the rotor part and the centrifugal pump device; the inlet of the axial flow turbine is located at the other end of the second pipe body, and the outlet of the axial flow turbine is located at the other end of the first pipe body, so The axial flow turbine impeller is located in the first pipe body; the deflector is fixed between the first pipe body and the second pipe body through the axial flow turbine flange.

Further, the third tube body is provided with a first bearing passing through the first rotating shaft; the fourth pipe body is provided with a second bearing passing through the second rotating shaft.

Further, a filter screen is provided on the water inlet of the centrifugal pump.

Further, the separator is made of Hastelloy material.

The technical scheme of the utility model has the following advantages:

1. The residual pressure energy-driven magnetic coupling supercharging mechanism provided by the utility model drives the axial flow turbine rotor part to rotate through the first rotating shaft, and drives the centrifugal pump rotor part to rotate through the axial flow turbine rotor part. , the centrifugal impeller can be driven to rotate through the second rotating shaft to realize the transmission of mechanical energy. Compared with the existing magnetic coupling pump device driven by residual pressure energy, the intermediate link of converting mechanical energy into electrical energy is reduced, the energy conversion efficiency is improved, and the energy consumption is improved. usage efficiency. By setting the deflector vanes with diversion holes, the large flow of water flows through the inlet of the axial flow turbine and then flows from the diversion holes to the impeller of the axial flow turbine, which can speed up the flow rate of the water flow and improve the efficiency of the axial flow turbine impeller. The rotating speed of the centrifugal impeller can be increased to increase the rotating speed of the centrifugal impeller, and the water with a small flow rate can be raised to a higher pressure head through the diversion hole; the rotation of the centrifugal impeller makes the water flow into the centrifugal volute from the water inlet of the centrifugal pump, and the water with a large flow rate and a low head The mechanical energy of the pump is transferred to the centrifugal pump device, and the water flows out from the outlet of the centrifugal pump, which can increase the small flow of water to a higher pressure head, effectively improving the energy conversion efficiency. Axial flow turbine rotor parts and centrifugal pump rotor parts are arranged in the sealing cylinder of the rotor parts at intervals, which ensures the sealing performance, saves the complicated shaft seal, reduces the difficulty of assembly, reduces the frictional resistance, and further improves the energy conversion efficiency.

2. In the magnetic coupling supercharging mechanism driven by residual pressure provided by the utility model, there are a plurality of diversion holes evenly distributed in the circumferential direction of the diversion plate, and the plurality of diversion holes are arranged obliquely in the axial direction, and the plurality of diversion holes The holes are set corresponding to the axial flow turbine impeller. With this arrangement, the rotation speed of the axial flow turbine impeller can be enhanced through multiple flow guide holes, further improving the energy conversion efficiency; at the same time, the multiple flow guide holes are arranged obliquely in the axial direction and corresponding to the axial flow turbine impeller, which can be changed The angle at which the water flow impinges on the impeller of the axial flow turbine can further increase the rotational speed of the impeller of the axial flow turbine, thereby improving the energy conversion efficiency.

3. The residual pressure energy-driven magnetic coupling supercharging mechanism provided by the utility model, 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 sealing cylinder of the rotor part, A plurality of permanent magnets alternately arranged in N-level and S-level are arranged on opposite sides of the two disc structures, and the plurality of permanent magnets are evenly spaced on the disc structure in the circumferential direction. In this way, the positioning can be facilitated by the disk structure; multiple permanent magnets are distributed on the disk structure at equal intervals in the circumferential direction, and are arranged alternately in N stages and S stages. When the water flow impacts the axial flow turbine impeller, the axial flow turbine The impeller rotates, and then drives the rotor part of the axial flow turbine to rotate through the shaft of the axial flow turbine impeller, so that the magnetic flux changes and the magnetic field rotates. Through the magnetic coupling device, the rotor part of the centrifugal pump rotates, and the centrifugal impeller is driven to rotate through the second rotating shaft, and the water It is introduced from the water inlet of the centrifugal pump and flows out from the water outlet of the centrifugal pump to increase the pressure head of the water, thereby achieving the boosting effect.

4. In the residual pressure energy-driven magnetic coupling supercharging mechanism provided by the utility model, the rotor component sealing cylinder includes a centrifugal pump rotor sealing shell corresponding to the centrifugal pump rotor component and an axial flow turbine corresponding to the axial flow turbine rotor component. The sealing shell of the flat rotor, the sealing shell of the rotor of the centrifugal pump and the sealing shell of the rotor of the axial flow turbine are connected and fixed by a magnetic coupling flange. With such an arrangement, the positioning of the rotor part of the centrifugal pump and the rotor part of the axial flow turbine can be realized through the magnetic coupling flange, and the installation and disassembly are convenient.

5. The magnetic coupling supercharging mechanism driven by the residual pressure provided by the utility model, the centrifugal pump rotor sealing shell and the axial flow turbine rotor sealing shell are fixed with a partition through the magnetic coupling flange, and the partition is connected with the centrifugal pump rotor sealing shell and There are gaps between the sealing shells of the axial flow turbine rotors. With such an arrangement, the sealing performance of the rotor part of the centrifugal pump and the rotor part of the axial flow turbine in the sealing cylinder of the rotor part can be guaranteed through the partition plate.

6. In the magnetic coupling supercharging mechanism driven by residual pressure provided by the utility model, a first seal is provided at the joint between the first rotating shaft and the sealing casing of the axial turbine rotor; one end of the second rotating shaft is connected to the sealing casing of the centrifugal pump rotor. The joint of the second rotating shaft and the joint of the other end of the second rotating shaft and the centrifugal pump device are all provided with a second sealing member. In this way, the first sealing member can ensure the tightness of the connection between a rotating shaft and the axial flow turbine rotor sealing shell; through two second sealing joints, the connection between one end of the second rotating shaft and the centrifugal pump rotor sealing shell can be ensured. The tightness of the place, and the tightness of the connection between the other end of the second rotating shaft and the centrifugal pump device.

7. In the magnetic coupling supercharging mechanism driven by residual pressure provided by the utility model, one end of the first pipe body is connected to one end of the second pipe body through the axial flow turbine flange, and the deflector is passed through the axial flow turbine flange. It is fixed between the first pipe body and the second pipe body, so that the stability of the deflector can be guaranteed.

8. In the magnetic coupling supercharging mechanism driven by residual pressure provided by the utility model, the third tube body is provided with a first bearing on the first rotating shaft; the fourth tube body is provided with a bearing on the second rotating shaft. Second bearing. With such an arrangement, the first bearing can ensure the rotation effect of the first rotating shaft while supporting the first rotating shaft; the second bearing can ensure the rotating effect of the second rotating shaft while supporting the second rotating shaft.

9. The residual pressure energy-driven magnetic coupling supercharging mechanism provided by the utility model, the separator is made of Hastelloy material, which can avoid the influence of the separator on the transmission of magnetic force, thereby ensuring that the axial flow turbine rotor components have a positive impact on the centrifugal pump. Magnetic drive effect on rotor components.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is a three-dimensional structure diagram of a magnetically coupled supercharging mechanism driven by residual pressure energy provided by an embodiment of the present invention;

Fig. 2 is an exploded diagram of a magnetically coupled supercharging 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 magnetically coupled supercharging mechanism driven by residual pressure energy in this embodiment;

Fig. 4 is a schematic diagram of the connection relationship between the centrifugal pump device and the centrifugal pump rotor components in this embodiment;

5 is a schematic diagram of the connection relationship between the magnetic coupling device and the centrifugal pump device in this embodiment;

FIG. 6 is a three-dimensional structural diagram of the magnetic coupling device in this embodiment;

FIG. 7 is a three-dimensional structure diagram of the guide vane in this embodiment.

Explanation of reference signs:

0. Delivery pipe; 01. First pipe body; 02. Second pipe body; 03. Third pipe body; 04. Fourth pipe body; 1. Axial flow turbine device; 11. Axial flow turbine inlet; 12 1. Axial flow turbine outlet; 13. First rotating shaft; 14. Guide vane; 15. Axial flow turbine flange; 16. Axial flow turbine impeller; 17. Guide hole; 18. First fixing member; 119 , the first bearing; 2, the magnetic coupling device; 21, the axial flow turbine rotor part; 22, the centrifugal pump rotor part; 23, the second fixing part; 24, the permanent magnet; 25, the separator; 26, the centrifugal pump rotor seal Shell; 27. Magnetic coupling flange; 28. Axial turbine rotor sealing shell; 29. First seal; 3. Centrifugal pump device; 31. Centrifugal impeller; 32. Filter screen; 33. Second shaft; 34. Centrifugal pump water inlet; 35, centrifugal pump water outlet; 36, centrifugal volute; 37, second seal; 38, second bearing.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

As shown in Figure 1-7, a residual pressure energy-driven magnetic coupling supercharging mechanism includes a delivery pipe 0 and an axial flow turbine device 1, a magnetic coupling device 2 and a centrifugal pump device 3 arranged on the delivery pipe 0 in sequence. . The delivery pipe 0 is provided with an axial flow turbine outlet 12, an axial flow turbine inlet 11 and a centrifugal pump water inlet 34 in sequence. Wherein, the axial flow turbine device 1 is arranged near the outlet 12 of the axial flow turbine, and includes an axial flow turbine impeller 16 arranged near the axial flow turbine outlet 12, a first rotating shaft 13 connected with the axial flow turbine impeller 16, and a The guide vane 14 arranged on the first rotating shaft 13 and located between the inlet 11 of the axial flow turbine and the impeller 16 of the axial flow turbine is provided with a guide hole 17 on the guide vane 14 . The magnetic coupling device 2 includes a sealed rotor casing, and an axial flow turbine rotor part 21 and a centrifugal pump rotor part 22 arranged in the rotor sealed casing; There are a plurality of permanent magnets 24 alternately arranged in N stages and S stages; a partition plate 25 is arranged between the axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 . The centrifugal pump device 3 is arranged near the water inlet 34 of the centrifugal pump, and includes a centrifugal volute 36 communicated with the delivery pipe 0, a centrifugal impeller 31 rotatably installed in the centrifugal volute 36, and a centrifugal impeller 31 connected between the centrifugal impeller 31 and the centrifugal pump rotor part 22. The second rotating shaft 33 between them; the centrifugal pump water outlet 35 is opened on the centrifugal volute 36; the second rotating shaft 33 is arranged between the centrifugal impeller 31 and the centrifugal pump rotor part 22.

This residual pressure energy-driven magnetic coupling supercharging mechanism makes the axial flow turbine impeller 16 drive the axial flow turbine rotor part 21 to rotate through the first rotating shaft 13, and drives the centrifugal pump rotor part 22 to rotate through the axial flow turbine rotor part 21. , the centrifugal impeller 31 can be driven to rotate through the second rotating shaft 33 to realize the transmission of mechanical energy. Compared with the existing magnetic coupling pump device driven by residual pressure energy, the intermediate link of converting mechanical energy into electrical energy is reduced, and the energy conversion efficiency is improved. Energy efficiency. By setting the deflector vane 14 with the deflector hole 17, the large flow of water flows through the inlet 11 of the axial flow turbine and then flows from the deflector hole 17 to the axial flow turbine impeller 16, which can speed up the flow rate of the water flow, thereby improving The rotational speed of the axial flow turbine impeller 16, and then increase the rotational speed of the driving centrifugal impeller 31, and the feed water with a small flow rate can be raised to a higher pressure head through the guide hole 17; the rotation of the centrifugal impeller 31 makes the water flow from the centrifugal pump water inlet 34 to the centrifugal worm Inside the shell 36, the mechanical energy of the water with a large flow rate and low head is transmitted to the centrifugal pump device 3, and the water flow flows out from the outlet 35 of the centrifugal pump, which can increase the water supply with a small flow rate to a higher head pressure, effectively improving the energy conversion efficiency. The axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 are arranged in the sealing cylinder of the rotor part at intervals, which ensures the sealing performance, saves the complicated shaft seal, reduces the difficulty of assembly, and reduces the frictional resistance at the same time, further improving the energy conversion efficiency.

In this embodiment, the delivery pipe 0 includes a first pipe body 01, a second pipe body 02, a third pipe body 03, and a fourth pipe body 04 arranged in sequence; the second pipe body 02 is L-shaped, and the first pipe body One end of 01 is connected with one end of the second pipe body 02 through the axial flow turbine flange 15 and the first fixing piece 18, the third pipe body 03 is connected between the second pipe body 02 and the sealing cylinder of the rotor part, and the fourth pipe body The body 04 is connected between the sealing cylinder of the rotor part and the centrifugal pump device 3. Specifically, the fourth pipe body 04 is provided with a filter screen 32 on the water inlet 34 of the centrifugal pump, so that the filter screen 32 is located at the water inlet 34 of the centrifugal pump , can filter and separate the impurities in the water. The inlet 11 of the axial flow turbine is located at the other end of the second pipe body 02 , the outlet 12 of the axial flow turbine is located at the other end of the first pipe body 01 , and the impeller 16 of the axial flow turbine is located in the first pipe body 01 . Specifically, 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 , so that the stability of the guide vane 14 can be ensured. Specifically, the first fixing member 18 is a screw rod and a locking screw suitable for fastening the flange 15 of the axial flow turbine.

In this embodiment, there are six guide holes 17 evenly distributed in the circumferential direction of the guide vane 14, and the number of blades of the axial turbine impeller 16 is the same as the number of guide holes 17 on the guide vane 14, six The flow guide holes 17 are arranged obliquely in the axial direction; the six flow guide holes 17 are arranged corresponding to the six fan blades on the axial flow turbine impeller 16 . With such arrangement, the rotational speed of the axial flow turbine impeller 16 can be enhanced through the flow guide holes 17, further improving the energy conversion efficiency; at the same time, the six flow guide holes 17 are arranged obliquely in the axial direction and corresponding to the axial flow turbine impeller 16, The angle at which the water flow impacts the axial flow turbine impeller 16 can be changed, thereby increasing the rotational speed of the axial flow turbine impeller 16, thereby improving energy conversion efficiency.

In this embodiment, the third tube body 03 is provided with a first bearing 119 penetrating on the first shaft 13 ; the fourth tube body 04 is provided with a second bearing 38 penetrating on the second shaft 33 . Such setting can ensure the rotation effect of the first rotating shaft 13 through the first bearing 119, and can support the first rotating shaft 13 at the same time; support.

In this embodiment, both the axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 are disc structures; the two disc structures are coaxially arranged in the sealing cylinder of the rotor part, and on the opposite side of the two disc structures Each is provided with six permanent magnets 24 alternately arranged in N stages and S stages, and the six permanent magnets 24 are evenly spaced circumferentially on the same disk structure. In this way, by setting the axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 as disk structures, it is convenient to locate when the axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 are installed, and multiple permanent magnets 24 are distributed on the disc structure at equal intervals in the circumferential direction, and are arranged alternately in N stages and S stages. When the water flow hits the axial flow turbine impeller 16, the axial flow turbine impeller 16 rotates, and then passes through the axial flow turbine impeller 16 shaft. Drive the axial flow turbine rotor part 21 to rotate, so that the magnetic flux changes, and the magnetic field rotates. Through the magnetic coupling device 2, the centrifugal pump rotor part 22 rotates, and the second rotating shaft 33 drives the centrifugal impeller 31 to rotate, and the water is drawn from the centrifugal pump water inlet 34 Introduce, flow out from the outlet 35 of the centrifugal pump, increase the pressure head of the water, so as to achieve the pressurization effect; at the same time, use the centrifugal impeller 31 to increase the small flow water supply to a higher pressure head, which can be applied to farmland irrigation, sewage purification, seawater Reverse osmosis membrane desalination and other fields.

In this embodiment, the rotor component seal cylinder includes a centrifugal pump rotor seal housing 26 corresponding to the centrifugal pump rotor component 22 and an axial flow turbine rotor seal housing 28 corresponding to the axial flow turbine rotor component 21. The centrifugal pump rotor The sealing shell 26 and the axial flow turbine rotor sealing shell 28 are connected and fixed through the magnetic coupling flange 27 and the second fixing part 23 . With such an arrangement, the positioning of the rotor part 22 of the centrifugal pump and the rotor part 21 of the axial flow turbine can be realized through the magnetic coupling flange 27, and the installation and disassembly are facilitated. Specifically, the second fixing member 23 is a screw rod and a locking screw suitable for fastening the magnetic coupling flange 27 .

In this embodiment, the centrifugal pump rotor sealing shell 26 and the axial flow turbine rotor sealing shell 28 are fixed with a partition 25 through a magnetic coupling flange 27, and the partition 25 is sealed with the centrifugal pump rotor sealing casing 26 and the axial flow turbine rotor. There are gaps between the shells 28 . With such an arrangement, the diaphragm 25 can ensure the sealing performance of the rotor part 22 of the centrifugal pump and the rotor part 21 of the axial flow turbine in the sealing cylinder of the rotor part. Specifically, the baffle 25 is made of Hastelloy material. Such arrangement can prevent the baffle 25 from affecting the transmission of magnetic force, thereby ensuring the magnetic driving effect of the axial flow turbine rotor part 21 on the centrifugal pump rotor part 22 .

In this embodiment, a first sealing member 29 is provided at the joint between the first rotating shaft 13 and the sealing casing 28 of the axial flow turbine rotor. The second rotating shaft 33 is connected between the sealing casing 26 of the centrifugal pump rotor and the centrifugal impeller 31 , and second sealing members 37 are provided at the joints of both ends. In this way, the first sealing member 29 can ensure the tightness of the connection between a rotating shaft and the axial flow turbine rotor seal housing 28; through two second sealing connections, it can ensure that one end of the second rotating shaft 33 is sealed with the rotor of the centrifugal pump. The tightness of the joint of the casing 26 and the tightness of the joint of the other end of the second rotating shaft 33 and the centrifugal pump device 3 . Furthermore, it is ensured that the interior of the centrifugal pump device 3 and the axial flow turbine device 1 are not communicated with each other, thereby realizing zero leakage of water.

In this embodiment, a first seal 29 is provided at the connection between the first rotating shaft 13 and the axial flow turbine rotor sealing casing 28; at the connection between one end of the second rotating shaft 33 and the centrifugal pump rotor sealing casing 26, the second rotating shaft The connection between the other end of 33 and the centrifugal pump device 3 is provided with a second seal 37 . In this way, the first sealing member 29 can ensure the tightness of the connection between a rotating shaft and the axial flow turbine rotor seal housing 28; through two second sealing connections, it can ensure that one end of the second rotating shaft 33 is sealed with the rotor of the centrifugal pump. The tightness of the joint of the casing 26 and the tightness of the joint of the other end of the second rotating shaft 33 and the centrifugal pump device 3 .

working principle:

Drainage flows in from the inlet 11 of the axial flow turbine, passes through the second pipe body 02 and the first pipe body 01 in turn, and then flows out from the outlet 12 of the axial flow turbine. The flat impeller 16 and the axial flow turbine impeller 16 rotate, and the axial flow turbine rotor part 21 is driven to rotate through the first rotating shaft 13, so that the magnetic flux changes and the magnetic field rotates. The centrifugal pump rotor part 22 senses the change of the magnetic flux and then rotates in the same direction as the magnetic field, and then drives the centrifugal impeller 31 to rotate through the second rotating shaft 33 to perform work, and then introduces water from the centrifugal pump water inlet 34, and the water flows from the centrifugal pump. The pump water outlet 35 flows out, and then increases the pressure head of water, realizes pressurization effect.

To sum up, this residual pressure energy-driven magnetic coupling supercharging mechanism makes the axial flow turbine impeller 16 drive the axial flow turbine rotor part 21 to rotate through the first rotating shaft 13, and drives the centrifugal force through the axial flow turbine rotor part 21. The rotation of the pump rotor part 22 can drive the centrifugal impeller 31 to rotate through the second rotating shaft 33 to realize the transmission of mechanical energy. Compared with the existing magnetic coupling pump device driven by residual pressure energy, it reduces the intermediate link of converting mechanical energy into electrical energy and improves energy efficiency. The conversion efficiency improves the energy utilization efficiency. By setting the deflector vane 14 with the deflector hole 17, the large flow of water flows through the inlet 11 of the axial flow turbine and then flows from the deflector hole 17 to the axial flow turbine impeller 16, which can speed up the flow rate of the water flow, thereby improving The rotational speed of the axial flow turbine impeller 16, and then increase the rotational speed of the driving centrifugal impeller 31, and the feed water with a small flow rate can be raised to a higher pressure head through the guide hole 17; the rotation of the centrifugal impeller 31 makes the water flow from the centrifugal pump water inlet 34 to the centrifugal worm Inside the shell 36, the mechanical energy of the water with a large flow rate and low head is transmitted to the centrifugal pump device 3, and the water flow flows out from the outlet 35 of the centrifugal pump, which can increase the water supply with a small flow rate to a higher head pressure, effectively improving the energy conversion efficiency. The axial flow turbine rotor part 21 and the centrifugal pump rotor part 22 are arranged in the sealing cylinder of the rotor part at intervals, which ensures the sealing performance, saves the complicated shaft seal, reduces the difficulty of assembly, and reduces the frictional resistance at the same time, further improving the energy conversion efficiency.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model.

Claims (10)

1. A magnetically coupled supercharging mechanism driven by residual pressure, characterized in that it comprises: A delivery pipe (0), on which an axial flow turbine outlet (12), an axial flow turbine inlet (11) and a centrifugal pump water inlet (34) are sequentially arranged; the axial flow turbine outlet (12) and the The water inlets (34) of the centrifugal pump are respectively located at the two ends of the delivery pipe (0); The axial flow turbine device (1) is arranged on the delivery pipe (0) at one end close to the outlet of the axial flow turbine (12), including an axial flow turbine arranged near the outlet of the axial flow turbine (12). flat impeller (16), a guide vane (14) between the axial flow turbine inlet (11) and the axial flow turbine impeller (16), the guide vane (14) is provided with The guide holes (17) correspondingly arranged on the axial flow turbine impeller (16); The magnetic coupling device (2) is arranged in the middle of the delivery pipe (0) through the rotor component sealing cylinder, and includes the axial flow turbine rotor component (21) and the centrifugal pump rotor component (22) arranged at intervals in the rotor component sealing cylinder ); the axial flow turbine rotor part (21) can be driven by magnetic force to rotate the centrifugal pump rotor part (22), and the axial flow turbine rotor part (21) is connected to the first rotating shaft (13) The axial flow turbine impeller (16) is connected; The centrifugal pump device (3), which is arranged on the delivery pipe (0) at one end close to the water inlet (34) of the centrifugal pump, includes a centrifugal volute (36), is arranged in the centrifugal volute (36) and The centrifugal impeller (31) connected with the centrifugal pump rotor part (22) through the second rotating shaft (33), and the centrifugal pump communicated with the centrifugal pump water inlet (34) is provided on the centrifugal volute (36) water outlet (35). 2. The magnetic coupling supercharging mechanism driven by residual pressure according to claim 1, characterized in that there are a plurality of guide holes (17) evenly distributed in the upper direction of the guide plate (14), A plurality of the guide holes (17) are arranged obliquely in the axial direction, and are arranged correspondingly to the axial flow turbine impeller (16). 3. The magnetic coupling supercharging mechanism driven by residual pressure energy according to claim 1, characterized in that, the axial flow turbine rotor part (21) and the centrifugal pump rotor part (22) are both disc structures The two disc structures are coaxially arranged in the sealing cylinder of the rotor part, and on the opposite side of the two disc structures, a plurality of permanent magnets (24) arranged alternately in N and S levels are arranged. ), a plurality of permanent magnets (24) are evenly spaced circumferentially on the disc structure. 4. The magnetic coupling supercharging mechanism driven by residual pressure energy according to claim 1, characterized in that, the rotor component sealing cylinder comprises a centrifugal pump rotor sealing shell ( 26) and the axial flow turbine rotor seal housing (28) corresponding to the axial flow turbine rotor component (21), the centrifugal pump rotor seal housing (26) and the axial flow turbine rotor seal housing ( 28) are connected and fixed by a magnetic coupling flange (27). 5. The residual pressure energy-driven magnetic coupling supercharging mechanism according to claim 4, characterized in that, the centrifugal pump rotor seal casing (26) and the axial flow turbine rotor seal casing (28) pass through the The magnetic coupling flange (27) is fixed with a partition (25), and there is a gap between the partition (25) and the centrifugal pump rotor seal casing (26) and the axial flow turbine rotor seal casing (28). gap. 6. The residual pressure driven magnetic coupling supercharging mechanism according to claim 4, characterized in that, the connection between the first rotating shaft (13) and the axial flow turbine rotor seal housing (28) is provided with The first seal (29); the connection between one end of the second rotating shaft (33) and the centrifugal pump rotor seal casing (26), the other end of the second rotating shaft (33) and the centrifugal pump device The joints of (3) are all provided with a second sealing member (37). 7. The magnetic coupling supercharging mechanism driven by residual pressure according to claim 1, characterized in that, the conveying pipe (0) comprises a first pipe body (01) and a second pipe body (02) arranged in sequence , the third pipe body (03) and the fourth pipe body (04); the second pipe body (02) is L-shaped, and one end of the first pipe body (01) passes through the axial flow turbine flange (15 ) is connected to one end of the second pipe body (02), the third pipe body (03) is connected between the second pipe body (02) and the sealing cylinder of the rotor part, and the fourth pipe body The body (04) is connected between the rotor part seal cylinder and the centrifugal pump device (3); the axial flow turbine inlet (11) is located at the other end of the second pipe body (02), and the The axial flow turbine outlet (12) is located at the other end of the first pipe body (01), and the axial flow turbine impeller (16) is located in the first pipe body (01); the guide vanes (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, the third pipe body (03) is provided with a first rotating shaft (13). A bearing (119); a second bearing (38) penetrating on the second rotating shaft (33) is arranged in the fourth pipe body (04). 9. The magnetic coupling supercharging mechanism driven by residual pressure energy according to claim 1, characterized in that, a filter screen (32) is arranged on the water inlet (34) of the centrifugal pump. 10. The residual pressure driven magnetic coupling supercharging mechanism according to claim 5, characterized in that, the partition (25) is made of Hastelloy material.

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