CN121952883A - A modular multistage centrifugal pump - Google Patents
A modular multistage centrifugal pumpInfo
- Publication number
- CN121952883A CN121952883A CN202610168226.5A CN202610168226A CN121952883A CN 121952883 A CN121952883 A CN 121952883A CN 202610168226 A CN202610168226 A CN 202610168226A CN 121952883 A CN121952883 A CN 121952883A
- Authority
- CN
- China
- Prior art keywords
- impeller
- guide vane
- stator
- tail
- centrifugal pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a modularized multistage centrifugal pump, which comprises an end cover, a plurality of modularized components and a volute, wherein the modularized components are sequentially connected end to end, the modularized components comprise a shell, an impeller and a motor module, a containing space is formed in the shell, a suction inlet is axially formed in the shell along the containing space, a discharge outlet is radially formed in the shell along the containing space, the impeller is rotatably arranged in the containing space, the motor module comprises a stator and a permanent magnet, the stator is fixed in the shell, and the permanent magnet is fixed on the impeller.
Description
Technical Field
The invention relates to the field of speed reducer equipment, in particular to a modularized multistage centrifugal pump.
Background
Multistage centrifugal pumps are important fluid conveying equipment in the fields of ships and aviation, and currently, the multistage centrifugal pumps generally work in a mode of driving impellers by motors.
Patent CN 120159777A proposes an energy-conserving multistage centrifugal pump of adjustable level, including the pump case, the delivery port is installed in the front of pump case, the water inlet is installed to the top surface of pump case, the water inlet is used for leading in the inside of pump case with liquid through centrifugal pressurization by the delivery port discharge, drive spindle motor is still installed to one side of pump case, the both sides parcel of pump case has the pump cover, the surface of pump case still is provided with pressure sensor, the inside embedding of pump case has dual pressure release subassembly, dual pressure release subassembly includes the interior pump body.
However, the above-mentioned technique has a problem that the motor drives the impeller by changing the number of stages to adapt to the pressure change, but the axial space utilization is low and the replacement is complicated.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a modular multistage centrifugal pump that can solve the problems of low axial space utilization and complex replacement in the prior art.
The invention provides a modular multistage centrifugal pump comprising:
An end cover is arranged on the inner side of the shell,
The modularized assembly at the head end is connected with the end cover, the modularized assembly at the tail end is connected with the volute, the modularized assembly comprises a shell, an impeller and a motor module, a containing space is formed in the shell, a suction inlet is axially formed in the containing space and a discharge outlet is radially formed in the containing space on the shell, the impeller is rotatably arranged in the containing space, the motor module comprises a stator and a permanent magnet, the stator is fixed in the shell, the permanent magnet is fixed on the impeller, and
The volute is characterized in that the discharge outlet of the modularized assembly positioned at the tail end is in butt joint with the liquid outlet of the volute, the suction inlet of the modularized assembly is in butt joint with the discharge outlet of the modularized assembly at the upper stage, and the suction inlet of the modularized assembly positioned at the head end is in butt joint with the liquid inlet of the end cover.
In other embodiments, the impeller is provided with an impeller liquid inlet in the middle of the impeller axis, the impeller is provided with an impeller liquid outlet in the circumferential direction, and a cavity communicated with the impeller liquid inlet and the impeller liquid outlet is formed inside the impeller.
In other embodiments, the stator comprises a core and a stator winding, the core is annular, and the stator winding is arranged on the core.
In other embodiments, the iron core is provided with a pin hole, and a bolt is arranged in the pin hole and used for limiting the stator winding to move in a serial manner along the circumferential direction.
In other embodiments, the permanent magnets are disposed on two end surfaces of the impeller, and the motor module includes two stators respectively corresponding to the two end surfaces of the impeller.
In other embodiments, the modular assembly further comprises a front guide vane section and a rear guide vane section, wherein the front guide vane section is arranged at the front end of the impeller along the water flow direction and is fixed with the inner wall of the shell, the rear guide vane section is arranged at the rear end of the impeller along the water flow direction and is fixed with the inner wall of the shell, and the two stators are respectively fixed on the front guide vane section and the rear guide vane section.
In other embodiments, the front guide vane section is provided with a front guide vane liquid inlet in the middle, the rear guide vane section is provided with a rear guide vane liquid outlet in the middle, the front guide vane section is provided with a closed annular groove, the stator is embedded in the annular groove, and the annular groove is provided with an annular sealing cover.
In other embodiments, the front guide vane liquid inlet and the rear guide vane liquid outlet are provided with rotating bearings, the rotating bearings are provided with a first rotating end and a second rotating end which can rotate relatively, the first rotating end is fixed with the front guide vane section or the rear guide vane section, and the second rotating end is fixed with the impeller.
In other embodiments, the spiral case includes spiral case body, tail impeller and tail impeller drive assembly, the leakage fluid dram is located in the circumference of spiral case body and along the terminal surface tangential direction setting of spiral case body, tail impeller rotatable locate inside the spiral case body and with spiral case body coaxial setting, tail impeller drive assembly is used for the drive tail impeller is relative the spiral case body rotates.
In other embodiments, the temperature control adjusting module further comprises a temperature sensor, a flow pressure sensor, a controller and a power supply unit, wherein the temperature sensor is arranged at the stator and the tail impeller driving assembly and used for monitoring the working temperature of the stator and the tail impeller driving assembly in real time, the flow pressure sensor is arranged at the suction inlet, the discharge outlet, the liquid inlet and the liquid outlet and used for monitoring the flow and the pressure of the suction inlet, the discharge outlet, the liquid inlet and the liquid outlet, the power supply unit is used for electrically connecting the stator and the tail impeller driving assembly, and the controller is electrically connected with the temperature sensor, the flow pressure sensor and the power supply unit and used for controlling the power supply unit according to the temperature detected by the temperature sensor and the flow and the pressure monitored by the flow pressure sensor.
The beneficial effects of the invention are as follows:
The invention provides a modularized multistage centrifugal pump, which comprises an end cover, a plurality of modularized components and a volute, wherein the modularized components at the head end are sequentially connected end to end, the modularized components at the tail end are connected with the end cover, the modularized components comprise a shell, an impeller and a motor module, a containing space is formed in the shell, a suction inlet is axially formed in the shell along the containing space, a discharge outlet is radially formed in the containing space, the impeller is rotatably arranged in the containing space, the motor module is fixed in the containing space and drives the impeller to rotate relative to the containing space, the motor module comprises a stator and a permanent magnet, the stator is fixed in the shell, the permanent magnet is fixed on the impeller, the suction inlet of the modularized components at the head end is in butt joint with the discharge outlet of the modularized components at the head end, the suction inlet of the modularized components at the head end is in butt joint with the liquid inlet of the end cover, and the discharge outlet of the motor module at the tail end is in butt joint with the liquid inlet of the end cover, and the motor is in axial direction of the centrifugal pump, and the centrifugal pump is greatly improved in the axial performance of the centrifugal pump is realized by adopting a pump which has the axial compression pump, and the axial compression pump has the advantages of being compared with the traditional pump.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a modular multistage centrifugal pump of the present invention;
FIG. 2 is a schematic cross-sectional view of a modular multistage centrifugal pump of the present invention;
FIG. 3 is an exploded schematic view of the internal structure of a modular multistage centrifugal pump of the present invention;
FIG. 4 is a schematic view of the stator of FIG. 2;
FIG. 5 is a schematic diagram of a temperature control adjustment module in a modular multistage centrifugal pump according to the present invention;
FIG. 6 is a flow chart of the temperature control adjustment module in a modular multistage centrifugal pump according to the present invention;
Wherein, the liquid inlet is 1-end cover and 11-liquid inlet,
2-Modular components, 21-housing, 211-suction inlet, 212-discharge outlet, 22-impeller, 221-impeller inlet, 222-impeller outlet, 23-motor module, 231-stator, 231 a-core, 231 b-stator winding, 231 c-pin hole, 232-permanent magnet, 24-front guide vane section, 25-rear guide vane section, 26-annular groove, 27-annular seal cover, 28-rotating bearing,
3-Volute, 31-liquid outlet, 32-volute body, 33-tail impeller, 34-tail impeller driving component, 341-tail impeller stator, 342-tail impeller permanent magnet,
4-A fixed screw rod, wherein the fixed screw rod is provided with a plurality of screw holes,
The system comprises a 5-temperature control and regulation module, a 51-temperature sensor, a 52-flow pressure sensor, a 53-controller 54-power supply unit.
Detailed Description
The following detailed description of preferred embodiments of the application is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the application, are used to explain the principles of the application and are not intended to limit the scope of the application.
In order to solve the technical problems, the embodiment of the invention provides a modularized multistage centrifugal pump, which comprises an end cover 1, a plurality of modularized components 2 and a volute 3, wherein the plurality of modularized components 2 adopt an axial flux motor as a driving motor of the centrifugal pump, and compared with the scheme in the prior art, the integrated motor and the centrifugal pump greatly compress the axial space occupied by the pump body per se.
Referring to fig. 1-5, in an embodiment of the present invention, a modular multistage centrifugal pump includes an end cover 1, a plurality of modular components 2 and a volute 3, wherein the modular components 2 at the head end are sequentially connected end to end, the modular components 2 at the tail end are connected with the end cover 1, the modular components 2 at the tail end are connected with the volute 3, the modular components 2 include a housing 21, an impeller 22 and a motor module 23, a receiving space is formed in the housing 21, a suction inlet 211 is axially formed on the housing 21 along the receiving space, a discharge outlet 212 is radially formed on the housing 21, the impeller 22 is rotatably arranged in the receiving space, the motor module 23 is fixed in the receiving space and drives the impeller to rotate relative to the receiving space, wherein the suction inlet 211 of the modular components 2 is in butt joint with the discharge outlet 212 of the modular components 2 at the head end, the suction inlet 211 of the modular components 2 is in butt joint with the liquid inlet 11 of the end cover 1, and the discharge outlet 212 of the modular components 2 is in butt joint with the discharge outlet 31 of the modular components 2.
The use process of the application is that a proper number of modularized assemblies 2 are selected according to the requirement, the modularized assemblies 2 are connected end to end in sequence, the suction inlet 211 of the modularized assembly 2 is in butt joint with the discharge outlet 212 of the modularized assembly 2 at the previous stage, the suction inlet 211 of the modularized assembly 2 at the head end is in butt joint with the liquid inlet of the end cover 1, the discharge outlet 212 of the modularized assembly 2 at the tail end is in butt joint with the liquid outlet of the volute 3, after the assembly is completed, the motor module 23 is electrified, the motor module 23 drives the impeller 22 to rotate relative to the shell 21, fluid is centrifugally discharged, and the pumping effect is achieved.
Specifically, the end cover 1 is in a cover shape, the end cover 1 is matched with the end part of the shell 21, the end cover 1 is provided with the liquid inlet 11, and the liquid inlet 11 is communicated with the accommodating space of the modularized assembly 2 at the head end.
Specifically, the end cover 1 is detachably connected to the housing 21 of the modular assembly 2 at the head end, and specifically, the end cover 1 and the housing 21 are fixed by bolts.
Specifically, the housing 21 has a cylindrical shape, and has no cover at its upper and lower ends, and the impeller 22 is provided in the housing 21.
The end of the housing 21 is butted and sealed against the end of the other housing 21, the end cap 1 or the volute 3. Specifically, a housing seal ring is provided at an end of the housing 21, and is capable of sealing gaps between the housing 21 and the housing 21, between the housing 21 and the end cap 1, and between the housing 21 and the scroll 3.
Specifically, an impeller liquid inlet 221 is formed in the middle of the axis of the impeller 22, an impeller liquid outlet 222 is formed in the circumferential direction of the impeller 22, and a cavity communicating the impeller liquid inlet 221 and the impeller liquid outlet 221 is formed inside the impeller 22. In use, fluid enters the cavity of the impeller 22 through the impeller inlet 221 and exits through the impeller outlet 222.
Specifically, the motor module 23 includes a stator 231 and a permanent magnet 232, the stator 231 is fixed in the housing 21, the permanent magnet 232 is fixed on the impeller 22, and when the motor module 23 is electrified, the permanent magnet 232 and the impeller 22 are driven to rotate in the housing 21 to apply work to the fluid.
Further, the stator 231 includes an iron core 231a and a stator winding 231b, the iron core 231a is annular, and the stator winding 231b is disposed on the iron core 231 a. In order to avoid the stator winding 2231b from moving in series along the circumferential direction of the core 231a, a pin hole 231c is formed in the core 231a, and a pin is disposed in the pin hole 231c to limit the stator winding 231b, thereby solving the problem of the stator winding 231b moving in series along the circumferential direction of the core 231 a.
Further, the permanent magnets 232 are disposed on two end surfaces of the impeller 22, and the motor module 23 includes two stators 231 corresponding to two end surfaces of the impeller 22.
For the fixing problem of the two stators 231, the modular assembly 2 further includes a front guide vane section 24 and a rear guide vane section 25, the front guide vane section 24 is disposed at the front end of the impeller 22 along the water flow direction and is fixed to the inner wall of the housing 21, the rear guide vane section 25 is disposed at the rear end of the impeller 22 along the water flow direction and is fixed to the inner wall of the housing 21, and the two stators 231 are respectively fixed to the front guide vane section 24 and the rear guide vane section 25.
Specifically, the front guide vane liquid inlet is formed in the middle of the front guide vane section 24, the rear guide vane liquid outlet is formed in the middle of the rear guide vane section 25, a closed annular groove 26 is formed in the front guide vane section 24 and the rear guide vane section 25, the stator 231 is embedded in the annular groove 26, an annular sealing cover 27 is arranged on the annular groove 26 in a sealing mode, and the stator 231 is sealed.
And the modular assembly 2 at the head end, the front guide vane segment 24 and the end cover 1 are integrally arranged.
While the modular assembly 2 at the end, the rear guide vane section 25 thereof, is integrally provided with the volute 3.
In addition, the front guide vane section 24 and the rear guide vane section 25 also play a role in supporting the impeller 22, a rotating bearing 28 is arranged at the front guide vane liquid inlet and the rear guide vane liquid outlet, the rotating bearing 28 is provided with a first rotating end and a second rotating end which can rotate relatively, the first rotating end is fixed with the front guide vane section 24 or the rear guide vane section 25, and the second rotating end is fixed with the impeller 22. In this embodiment, the rotary bearing 28 is a radial thrust combination bearing.
It will be appreciated that the first rotational end of the rotational bearing 28 of the modular assembly 2 at the head end is fixed to the end cap 1, and the second rotational end of the rotational bearing 28 of the modular assembly 2 at the tail end is fixed to the volute 3.
Specifically, the volute 3 includes a volute body 32 and a tail impeller 33, the liquid drain port 31 is disposed on the circumferential direction of the volute body 32 and along the tangential direction of the end surface of the volute body 32, and the tail impeller 33 is rotatably disposed inside the volute body 32 and is coaxially disposed with the volute body 32. After the liquid in the modular assembly 2 enters the volute body 32, the liquid is finally discharged to the liquid outlet 31 through the centrifugal action of the tail impeller 33.
The volute 3 further comprises a trailing impeller driving assembly 34, and the trailing impeller driving assembly 34 is configured to drive the trailing impeller 33 to rotate relative to the volute body 32.
The trailing impeller 33 may be driven in a variety of ways, and in some possible embodiments, the trailing impeller driving assembly 34 includes a motor disposed outside the volute body 32 and connected to the shaft of the trailing impeller 33, so as to drive the trailing impeller 33 to rotate.
In this embodiment, the trailing impeller driving assembly 34 includes a trailing impeller stator 341 and a trailing impeller permanent magnet 342, the trailing impeller stator 341 is fixed in the volute body 32, the permanent impeller permanent magnet 342 is fixed on the trailing impeller 33, and when the trailing impeller stator 341 is energized, the trailing impeller permanent magnet 342 and the trailing impeller 33 are driven to rotate in the volute body 32 to apply work to fluid.
In addition, considering the stability of stacking the plurality of modular assemblies 2, the invention further comprises a plurality of fixing screws 4, wherein the fixing screws 4 penetrate through the shell 21, and two ends of the fixing screws 4 are respectively fixed with the end cover 1 and the volute 3 through bolts. The fixing screw 4 plays a role of fixing the modular assemblies 2 in series, and helps to improve the stacking stability of the modular assemblies 2.
The invention further comprises a temperature control adjusting module 5, wherein the temperature control adjusting module 5 comprises a temperature sensor 51, a flow pressure sensor 52, a controller 53 and a power supply unit 54, the temperature sensor 51 is arranged at the stator 231 and the tail impeller stator 341 and is used for monitoring working temperatures of the stator 231 and the tail impeller stator 341 in real time, the flow pressure sensor 52 is arranged at the suction inlet 211, the discharge outlet 212, the liquid inlet 11 and the liquid outlet 31 and is used for monitoring flow and pressure of the suction inlet 211, the discharge outlet 212, the liquid inlet 11 and the liquid outlet 31, and the power supply unit 54 is used for electrically connecting the stator 231 and the tail impeller stator 341. The controller 53 is electrically connected to the temperature sensor 51, the flow rate pressure sensor 52, and the power supply unit 54, and the controller 53 adjusts the voltage of the power supply unit 54 according to the temperature detected by the temperature sensor 51, the flow rate monitored by the flow rate pressure sensor 52, and the pressure, so as to adjust the rotation speed of the impeller 22, thereby implementing the following adjustment method, as shown in fig. 6:
The controller 53 forms a relation curve between the reference rotation speed and the flow lift of the impeller 22 and the tail impeller 33 according to past experience fitting;
When in starting, the controller 53 is fed with the required flow lift and the limiting temperature, the controller 53 determines the rotation speeds of the impeller 22 and the tail impeller 33 according to the relation curve, and the controller 53 precisely controls the total flow lift;
Each temperature sensor correspondingly detects the temperature of each stator 231 and each tail impeller stator 341, if a certain temperature sensor prompts that the temperature exceeds the limiting temperature, the corresponding impeller 22 or the tail impeller 33 is in speed reduction operation to prevent overheat damage, and the rotating speed of the adjacent impeller 22 or the tail impeller 33 is correspondingly increased to ensure that the equipment is maintained in a given temperature range and the total flow lift is kept to meet the requirement.
For convenience, the actual workflow of the invention will now be described with reference to the accompanying drawings:
In use, the controller 53 controls the power supply unit 54 to energize the stator 231 and the trailing impeller stator 341 to generate a rotating magnetic field, the rotating magnetic field drives the permanent magnet 232 mounted on the impeller 22 and the trailing impeller permanent magnet 342 mounted on the trailing impeller 33 to drive the impeller 22 to rotate, so as to apply work to the liquid sucked by the casing 21 to drive the liquid to rotate at a high speed, the liquid flows to the periphery of the impeller 22 and flows to the next stage of the modular assembly 2 through the trailing vane section 25, if the modular assembly 2 is the last stage, the liquid directly enters the suction test of the trailing impeller 33 after flowing through the trailing vane section 25, and finally is discharged out of the pump through the radial liquid discharge port 31, and in addition, the liquid flowing at a high speed can cool the stator 231 and the trailing impeller stator and lubricate and cool the rotating bearing 341.
The invention has the beneficial effects that:
The invention provides a modularized multistage centrifugal pump, which comprises an end cover, a plurality of modularized components and a volute, wherein the modularized components at the head end are sequentially connected end to end, the modularized components at the tail end are connected with the end cover, the modularized components comprise a shell, an impeller and a motor module, a containing space is formed in the shell, a suction inlet is axially formed in the shell along the containing space, a discharge outlet is radially formed in the containing space, the impeller is rotatably arranged in the containing space, the motor module is fixed in the containing space and drives the impeller to rotate relative to the containing space, the motor module comprises a stator and a permanent magnet, the stator is fixed in the shell, the permanent magnet is fixed on the impeller, the suction inlet of the modularized components at the head end is in butt joint with the discharge outlet of the modularized components at the head end, the suction inlet of the modularized components at the head end is in butt joint with the liquid inlet of the end cover, and the discharge outlet of the motor module at the tail end is in butt joint with the liquid inlet of the end cover, and the motor is in axial direction of the centrifugal pump, and the centrifugal pump is greatly improved in the axial performance of the centrifugal pump is realized by adopting a pump which has the axial compression pump, and the axial compression pump has the advantages of being compared with the traditional pump.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper" and "lower" and the like are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intervening medium, or may be in communication with the interior of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1.A modular multistage centrifugal pump comprising:
An end cover is arranged on the inner side of the shell,
The modularized assembly at the head end is connected with the end cover, the modularized assembly at the tail end is connected with the volute, the modularized assembly comprises a shell, an impeller and a motor module, a containing space is formed in the shell, a suction inlet is axially formed in the containing space and a discharge outlet is radially formed in the containing space on the shell, the impeller is rotatably arranged in the containing space, the motor module comprises a stator and a permanent magnet, the stator is fixed in the shell, the permanent magnet is fixed on the impeller, and
The volute is characterized in that the discharge outlet of the modularized assembly positioned at the tail end is in butt joint with the liquid outlet of the volute, the suction inlet of the modularized assembly is in butt joint with the discharge outlet of the modularized assembly at the upper stage, and the suction inlet of the modularized assembly positioned at the head end is in butt joint with the liquid inlet of the end cover.
2. The modular multistage centrifugal pump of claim 1, wherein an impeller liquid inlet is formed in the middle of the impeller axis, an impeller liquid outlet is formed in the periphery of the impeller, and a cavity communicated with the impeller liquid inlet and the impeller liquid outlet is formed in the impeller.
3. The modular multistage centrifugal pump of claim 1, wherein said stator comprises an iron core and a stator winding, said iron core being annular, said stator winding being disposed on said iron core.
4. A modular multistage centrifugal pump as in claim 3, wherein said core is provided with pin holes, and pins are provided in said pin holes for limiting circumferential movement of said stator windings.
5. The modular multistage centrifugal pump of claim 4, wherein said permanent magnets are provided on both end surfaces of said impeller, and said motor module comprises two of said stators, which correspond to both end surfaces of said impeller, respectively.
6. The modular multistage centrifugal pump of claim 5, wherein said modular assembly further comprises a front guide vane section and a rear guide vane section, said front guide vane section being provided at a front end of said impeller in a water flow direction and being fixed to said inner wall of said housing, said rear guide vane section being provided at a rear end of said impeller in a water flow direction and being fixed to said inner wall of said housing, two of said stators being fixed to said front guide vane section and said rear guide vane section, respectively.
7. The modular multistage centrifugal pump of claim 6, wherein a front guide vane liquid inlet is formed in the middle of the front guide vane section, a rear guide vane liquid outlet is formed in the middle of the rear guide vane section, a closed annular groove is formed in the front guide vane section and the rear guide vane section, the stator is embedded in the annular groove, and an annular sealing cover is arranged on the annular groove in a sealing mode.
8. The modular multistage centrifugal pump of claim 6, wherein a rotating bearing is disposed at the front vane liquid inlet and the rear vane liquid outlet, the rotating bearing having a first rotating end and a second rotating end which are rotatable relative to each other, the first rotating end being fixed to the front vane section or the rear vane section, and the second rotating end being fixed to the impeller.
9. The modular multistage centrifugal pump of claim 8, wherein the volute comprises a volute body, a tail impeller and a tail impeller driving assembly, the liquid drain is arranged in the circumferential direction of the volute body and along the tangential direction of the end face of the volute body, the tail impeller is rotatably arranged in the volute body and coaxially arranged with the volute body, and the tail impeller driving assembly is used for driving the tail impeller to rotate relative to the volute body.
10. The modular multistage centrifugal pump of claim 9, further comprising a temperature control adjustment module comprising a temperature sensor, a flow pressure sensor, a controller and a power supply unit, wherein the temperature sensor is arranged at the stator and the tail impeller driving assembly and is used for monitoring the working temperatures of the stator and the tail impeller driving assembly in real time, the flow pressure sensor is arranged at the suction inlet, the discharge outlet, the liquid inlet and the liquid outlet and is used for monitoring the flow and the pressure of the suction inlet, the discharge outlet, the liquid inlet and the liquid outlet, the power supply unit is used for electrically connecting the stator and the tail impeller driving assembly, and the controller is electrically connected with the temperature sensor, the flow pressure sensor and the power supply unit and is used for controlling the power supply unit according to the temperature detected by the temperature sensor and the flow and the pressure monitored by the flow pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202610168226.5A CN121952883A (en) | 2026-02-05 | 2026-02-05 | A modular multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202610168226.5A CN121952883A (en) | 2026-02-05 | 2026-02-05 | A modular multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN121952883A true CN121952883A (en) | 2026-05-01 |
Family
ID=99571037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202610168226.5A Pending CN121952883A (en) | 2026-02-05 | 2026-02-05 | A modular multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN121952883A (en) |
-
2026
- 2026-02-05 CN CN202610168226.5A patent/CN121952883A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6280157B1 (en) | Sealless integral-motor pump with regenerative impeller disk | |
| JP5880842B2 (en) | Electric oil pump device | |
| WO2019084572A1 (en) | Modular, multi-stage, integral sealed motor pump with integrally-cooled motors and independently controlled rotor speeds | |
| CN1941569B (en) | Sealed electric-motor and sealed pump | |
| JP4059416B2 (en) | Integrated motor pump | |
| CN213574637U (en) | Permanent magnet motor driven axial flow water pump | |
| US20150204327A1 (en) | Integrated Brushless Direct Current Motor and Lift Pump | |
| CN116398445A (en) | An integrated motor-driven centrifugal pump | |
| WO2002038964A1 (en) | Motor pump | |
| JP2000303986A5 (en) | ||
| CN108488076B (en) | Centrifugal pump and permanent magnet synchronous motor matching device and monitoring and regulating method thereof | |
| US3972653A (en) | In-line pump device | |
| CN212454839U (en) | Multi-stage pump capable of reducing fluid resistance | |
| JP2546943B2 (en) | Integrated centrifugal pump and motor | |
| JP2009515084A (en) | Liquid pump | |
| CN121952883A (en) | A modular multistage centrifugal pump | |
| CN208734564U (en) | A double outlet water pump | |
| CN215908071U (en) | Submersible wet type full tubular pump without shaft structure | |
| CN1212334A (en) | Axial-flow pump | |
| CN218062697U (en) | Double-stator water-filling type submersible tubular pump | |
| CN115089868B (en) | A rotor suspension stable rotation device | |
| CN114337120B (en) | Brushless direct current motor for booster pump and booster pump | |
| CN108894999A (en) | Electric water pump | |
| CN112081748B (en) | A magnetically suspended multi-stage differential shaftless water pump | |
| JP7847617B2 (en) | Integrated electronic oil pump and its operating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication |