CN205371016U - Frequency conversion multistage centrifugal pump - Google Patents
Frequency conversion multistage centrifugal pump Download PDFInfo
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- CN205371016U CN205371016U CN201620061225.2U CN201620061225U CN205371016U CN 205371016 U CN205371016 U CN 205371016U CN 201620061225 U CN201620061225 U CN 201620061225U CN 205371016 U CN205371016 U CN 205371016U
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Abstract
The utility model discloses a frequency conversion multistage centrifugal pump, include: shell body and interior casing are the runner between shell body and the interior casing, the elastic coupling ware links with the pump shaft, the impeller is pegged graft to rotate on the pump shaft and is sucked the fluid and the pressurization from the sunction inlet, including pegging graft, collects in order to reduce the velocity of flow and to discharge through the discharge port on the casing and with pressor liquid the stator, inverter motor includes: the motor shaft of elastic coupling ware is connected to motor body and axial, still sets up including integrated frequency -variable controller in the motor body, inverter motor pass through the motor shaft and elastic coupling ware drive pump shaft rotates. The utility model discloses an inverter motor integrated integrative by converter and motor body, reduced the volume of equipment, practiced thrift the product manufacture cost, saved installation space, has improved the efficiency under the multistage centrifugal pump system part operating mode and has reduced the energy consumption.
Description
Technical field
This utility model relates to industrial liquid conveying and urban water supply and sewerage field, particularly relates to the centrifugal multistage pump multiple centrifugal pump that a kind of frequency conversion motor adopting converter motor integrated drives.
Background technology
Centrifugal multistage pump multiple centrifugal pump is applied to conveying and urban water supply and sewerage, the skyscraper pressurized water supply of industrial liquid, and the cold-warm water such as gardens sprinkling irrigation, fire fighting pressurization, long distance water, heating, bathroom is circularly-supercharged and coordinative composition of equipments and air conditioning unit circulation, cooling water conveying etc..
In current centrifugal multistage pump multiple centrifugal pump use procedure, major part is operated in power frequency rotating speed (50Hz).And in practical application (such as building living water), water pump system need not be operated in metered flow in the major part working time, rated head, and needing to be operated in partial load condition (flow that namely actual pump system needs lower than metered flow or required lift lower than rated head), this can realize by reducing the rotating speed of centrifugal pump.For centrifugal pump, power of motor consumption is approximate to be directly proportional to the cube of rotating speed.Centrifugal multistage pump multiple centrifugal pump constant speed is operated in power frequency and will result in the waste of the energy, thus increasing the weight of the pollution to environment.Present solution is the scheme adopting common centrifugal multistage pump multiple centrifugal pump to add frequency-conversion control cabinet.Along with improving constantly that energy-conserving and environment-protective require, the situation of VFC centrifugal multistage pump multiple centrifugal pump and pump group is used to get more and more.But the introducing due to converter, it is necessary to design independent frequency-conversion control cabinet for arranging the electronic devices and components of converter and some auxiliary.Thus make system become more complicated, and owing to frequency-conversion control cabinet volume is bigger so that whole variable frequency water pump system installing space substantially increases.On the other hand, owing to motor and converter are independent design, motor and converter as a system under major part operating mode all without being operated in Optimal State, under Part load, efficiency is on the low side.
Centrifugal multistage pump multiple centrifugal pump of the present utility model adopts converter and motor integrated form frequency conversion motor.On the one hand due to converter and motor integral, it is possible to reduce frequency-conversion control cabinet volume, even remove frequency-conversion control cabinet, save cost of goods manufactured, save installing space.Motor and converter are as an Optimized System Design on the other hand, the efficiency of frequency conversion motor partial load condition is taken into account while considering rated point optimization design, improve the efficiency under centrifugal multistage pump multiple centrifugal pump components of system as directed operating mode, thus reducing the operating cost of frequency variation multiple stage centrifugal pump system.
The controller of frequency variation multiple stage centrifugal pump of the present utility model devises powerful communication function: one, its controller adopts wireless blue tooth technology, it is achieved at mobile equipment, controls frequency variation multiple stage centrifugal pump system by application program operation on such as mobile phone；Two, its controller transmits a signal to centralized-control center by GPRS (general packet radio service technology), it is achieved wireless remote monitering；Three, its controller realizes networking by industrial bus agreement (such as RS485, Modbus)；Four, the touch screen operation panel of its configuration realizes local operation.
Utility model content
For solving above-mentioned technical problem, the purpose of this utility model is to provide a kind of centrifugal multistage pump multiple centrifugal pump being equipped with the frequency conversion motor that motor inverter becomes one, motor and converter are as an Optimized System Design, consider that centrifugal multistage pump multiple centrifugal pump takes into account frequency conversion motor partial load condition while optimizing design point, improve the efficiency under centrifugal multistage pump multiple centrifugal pump components of system as directed operating mode, improve the whole efficiency of variable frequency water pump system, reduce energy consumption, thus reducing the operating cost of frequency variation multiple stage centrifugal pump system, improve the efficiency under frequency conversion centrifugal pump system Part load and reducing operating cost；On the other hand due to converter and motor integral, it is possible to reduce switch board volume, even remove frequency-conversion control cabinet, save cost of goods manufactured, save installing space simultaneously.
For reaching above-mentioned purpose, the technical solution of the utility model is as follows:
A kind of frequency variation multiple stage centrifugal pump, including:
Shell body；
Inner housing, is positioned at described shell body, and the oral area of described inner housing is suction inlet；Passage between described shell body and described inner housing is runner, and the oral area of described runner is outlet；
Pump shaft, is axially contained in described inner housing, and described pump shaft sleeve is connected to axle sleeve and spacer ring；
Sliding bearing, is socketed in outside described axle sleeve, pump shaft described in sliding support；
Elastic coupler, is connected with described pump shaft, and outside frequency conversion motor drives described pump shaft to rotate by described elastic coupler；
Rolling bearing, is socketed on the described pump shaft being positioned at described elastic coupler one end, pump shaft described in rolling support；
Impeller, is plugged on described pump shaft, and described pump shaft drives described wheel rotation, thus the fluid pressurization that will suck from described suction inlet；
Stator, is plugged on described inner housing, and flow velocity is collected and reduced to the liquid pressurizeed by described impeller through described stator, and is discharged by described outlet；
Described frequency conversion motor includes: the motor shaft of motor body and the axially described elastic coupler of connection, also includes the frequency-variable controller being integrally disposed in described motor body, and described frequency conversion motor drives described pump shaft to rotate by described motor shaft and elastic coupler.
Wherein, described frequency conversion motor is described frequency-variable controller and motor body integral type integrated morphology, and by modern converter technique, thus changing the rotating speed of motor to control flow and the lift of centrifugal multistage pump multiple centrifugal pump according to control signal.
Further, described frequency conversion motor also has wireless blue tooth module, realizes being operated by application program on mobile equipment (such as on mobile phone) and controlling frequency variation multiple stage centrifugal pump system by wireless blue tooth signal.
Further, described frequency conversion motor also has GPRS module, by transmission GPRS signal to centralized-control center, it is achieved wireless remote monitering.
Further, described frequency conversion motor also has the COM1 based on industrial bus agreement, with by industrial bus protocol realization networking.
Further, described frequency conversion motor is equipped with touch panel device to realize local operation, and easy to operate, user interface is friendly.
Further, described frequency-variable controller is bolted on described motor body and is integrally forming；External power source is connected with described frequency-variable controller by being arranged on the power interface of described motor body；Described motor body also has input/output port for exporting the ancillary equipment in control signal control system；It is connected the input for different frequency power supply by power supply terminal with described motor body by the power supply of described frequency-variable controller frequency modulation.
Wherein, described impeller is axially positioned by described axle sleeve and spacer ring.
Wherein, first impeller in described impeller is first stage impeller, and described first stage impeller axially positions by being socketed in the axis head nut of described pump shaft end；Having multiple secondary impeller after described first stage impeller, last impeller is impeller.
Wherein, described stator includes:
First stator, one end of described first stator is plugged on described sliding bearing, and the other end is plugged on described inner housing, is first-level guide blade during the described first stator described first stage impeller of correspondence；
Second stator, one end of described second stator is plugged on described inner housing, is secondary stator, is final stage stator during corresponding described impeller during the corresponding described secondary impeller of described second stator.
Pass through technique scheme, the frequency variation multiple stage centrifugal pump that this utility model provides, its frequency conversion motor is integrated by converter and motor body, and drive pump shaft to rotate by motor shaft and elastic coupler, it has the advantage that 1. motor body and converter are as an integrated Optimized System Design, consider that centrifugal multistage pump multiple centrifugal pump takes into account frequency conversion motor partial load condition while optimizing design point, improve the efficiency under centrifugal multistage pump multiple centrifugal pump components of system as directed operating mode, improve the whole efficiency of variable frequency water pump system, reduce energy consumption, thus reducing the operating cost of frequency variation multiple stage centrifugal pump system, improve the efficiency under frequency conversion centrifugal pump system Part load and reduce operating cost；2. due to the integral type Integrated design of converter Yu motor body, decrease the volume of equipment, saved cost of goods manufactured, save installing space simultaneously.Additionally, the frequency-variable controller of frequency variation multiple stage centrifugal pump of the present utility model devises powerful communication function, including: 1. adopt wireless blue tooth technology, it is achieved that at mobile equipment, such as mobile phone controls frequency variation multiple stage centrifugal pump system by application program operation；2. centralized-control center is transmitted a signal to by GPRS (general packet radio service technology), it is achieved wireless remote monitering；3. networking is realized by industrial bus agreement (such as RS485, Modbus)；4. the touch screen operation panel passing through to configure friendly user's interface realizes local operation, and easy to operate, user interface is friendly.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below the accompanying drawing used required during embodiment is described is briefly described.
Fig. 1 is the structural representation of frequency variation multiple stage centrifugal pump of the present utility model；
Fig. 2 and 3 is the structural representation of frequency conversion motor of the present utility model.
In figure, numeral represents:
1. shell body 2. inner housing 3. pump shaft
4. sliding bearing 5. rolling bearing 6. elastic coupler
71/72/73. impeller 81/82/83. stator 9. frequency conversion motor
10. outlet 11. axis head nut 12. axle sleeve
20. suction inlet 21. runner 30. spacer ring
91. motor body 92. frequency-variable controller 93. motor shaft
94. power interface 95. input/output port 96. COM1
97. power supply terminal 98. bolt
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described.
Fig. 1 is the schematic diagram of this utility model frequency variation multiple stage centrifugal pump, as it can be seen, frequency variation multiple stage centrifugal pump of the present utility model specifically includes: shell body 1, inner housing 2, pump shaft 3, sliding bearing 4, rolling bearing 5, elastic coupler 6, impeller 71/72/73, stator 81/82/83 and frequency conversion motor 9.
Inner housing 2 is positioned at shell body 1, and the oral area of inner housing is suction inlet 20；Being runner 21 between shell body 1 and inner housing 1, the oral area of runner is outlet 10；Pump shaft 3 is contained in inner housing 2, and pump shaft 3 is socketed with axle sleeve 12 and spacer ring 30；Sliding bearing 4 is socketed in outside axle sleeve 12, for sliding support pump shaft 3；Rolling bearing 5 is socketed in pump shaft 3 one end being positioned at outside elastic coupler 6, for rolling support pump shaft 3.
Axle sleeve 12 is used for being socketed on pump shaft 3 and rotates for pump shaft 3, thus machining accuracy is higher；The major function of spacer ring 30 is the axial location between impeller, thus its processing request is relatively low.
Elastic coupler 6 and pump shaft 3 are connected, and outside frequency conversion motor 9 drives pump shaft 3 to rotate by elastic coupler 6；Impeller 71/72/73 is plugged on pump shaft 3, and pump shaft 3 impeller 71/72/73 rotates, thus the fluid pressurization that will enter from suction inlet 20；Stator 81/82/83 is plugged on inner housing 5, and flow velocity is collected and reduced to the liquid after being pressurizeed by impeller 71/72/73 by stator 81/82/83, and is discharged by outlet 10.
Concrete, the pump shaft 3 in suction side adopts sliding bearing 4 to support by axle sleeve 12, and frequency conversion motor 9 one end pump shaft 3 adopts rolling bearing 5 to support；With reference to Fig. 2, frequency conversion motor 9 includes the motor body 91, frequency-variable controller 92 and the motor shaft 93 that integrate, during work, drives elastic coupler 6 by motor shaft 93 and drives pump shaft 3 to rotate further, thus pumping liquid to the lift specified.
The first order impeller of centrifugal multistage pump multiple centrifugal pump suction side is first stage impeller 71, after there is multiple secondary impeller 72, last impeller is impeller 73；In order to improve the cavitation erosion performance of centrifugal multistage pump multiple centrifugal pump, first stage impeller 71 particular design, and secondary impeller 72 is identical with the design of impeller 73.
Stator after first stage impeller 71 is first-level guide blade 81, and in like manner, the stator after secondary impeller 72 is secondary stator 82, and the stator after impeller 73 is final stage stator 83.
First stage impeller 71 is axially positioned by axis head nut 11, axially positioned by axle sleeve 12 between first stage impeller 71 and first order secondary impeller 72, axially positioned by spacer ring 30 between all the other each impellers, and impeller 71/72/73 inner ring has multiple projection radially fixed on multiple grooves of pump shaft 3.
According to different impeller diameters and different progression, it is possible to be set to multiple sliding bearing 4, it is optimized by adjusting the quantity of sliding bearing 4, it is ensured that centrifugal multistage pump multiple centrifugal pump safe and stable operation.
The effect of stator 81/82/83 is that the liquid that impeller 71/72/73 is thrown away collects, the flow velocity making liquid reduces, after partial velocity can be changed into pressure energy, it is uniformly introduced next stage again or discharges feeding water supply network tubing through anemostat, stator 81/82/83 makes liquid flow in continuous print runner 21, not being easily formed dead angle and diffusion suddenly, fluid velocity change ratio is more uniform, and hydraulic performance is good.
One end of some stator is plugged on sliding bearing 4, and the other end is plugged on inner housing 2, for instance first-level guide blade 81, and together with sliding bearing 4 adopts interference fit with first-level guide blade 81；And some stator only has one end to be plugged on inner housing 2, for instance secondary stator 82 and final stage stator 83；Stator 81/82/83 is directly anchored on the inner housing 2 of multistage pump by the draw-in groove on inner housing 2.
With reference to Fig. 2 and 3, frequency-variable controller 92 is fixed on motor body 91 is integrally forming by bolt 98；According to demand to variable flow and lift in practical application, frequency conversion motor 9 receives feedback signal by the input/output port 95 of frequency-variable controller 92 and regulates the rotating speed of motor body 91, thus realizing the adjustment of flow and lift, wherein, flow is approximate and rotating speed is directly proportional, and lift is approximate and square being directly proportional of rotating speed；In order to realize the Consumer's Experience of close friend, frequency-variable controller 92 is provided with touch panel；In order to realize networking and communication, frequency-variable controller 92 devises wireless blue tooth technology, it is achieved on the mobile apparatus by application program, and such as hands hands-operation controls frequency variation multiple stage centrifugal pump system；Frequency-variable controller 92 is provided with GPRS (general packet radio service technology) module, transmits a signal to centralized-control center, it is achieved wireless remote monitering；Frequency-variable controller 92 have also been devised industrial bus agreement (such as RS485, Modbus) and realizes constructing communication network by COM1 96；External power source is connected with frequency-variable controller 92 by power interface 94, the ancillary equipment in input/output port 95 also exportable control signal control system；It is connected the input for different frequency power supply by the power supply terminal 97 of motor with motor body 91 by the power supply of frequency-variable controller 92 frequency modulation.
Requirement according to pumped (conveying) medium, centrifugal multistage pump multiple centrifugal pump of the present utility model can be selected for corresponding material, such as rustless steel, titanium alloy etc..
The pump shaft 3 of centrifugal multistage pump multiple centrifugal pump of the present utility model is directly driven by frequency conversion motor 9 by yielding coupling 6, pump shaft 3 drives first stage impeller 71 and 72 liquid pumpings of middle multiple secondary impeller to the lift specified, centrifugal multistage pump multiple centrifugal pump sucks centrifugal multistage pump multiple centrifugal pump through first stage impeller 71 liquid after suction inlet 20 sucks, liquid is after first stage impeller 71 pressurizes, enter secondary impeller 72 through first-level guide blade 81 and continue pressurization, then pass through secondary stator 82 and enter the pressurization of next stage impeller, until being discharged by final stage stator 83 after being terminated by impeller 73 pressure process, last frequency variation multiple stage centrifugal pump sends into tubing the liquid of high pressure runner 21 between inner housing 2 and shell body 1 from outlet 10.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a frequency variation multiple stage centrifugal pump, it is characterised in that including:
Shell body；
Inner housing, is positioned at described shell body, and the oral area of described inner housing is suction inlet；Passage between described shell body and described inner housing is runner, and the oral area of described runner is outlet；
Pump shaft, is axially contained in described inner housing, and described pump shaft sleeve is connected to axle sleeve and spacer ring；
Sliding bearing, is socketed in outside described axle sleeve, pump shaft described in sliding support；
Elastic coupler, is connected with described pump shaft, and outside frequency conversion motor drives described pump shaft to rotate by described elastic coupler；
Rolling bearing, is socketed on the described pump shaft being positioned at described elastic coupler one end, pump shaft described in rolling support；
Impeller, is plugged on described pump shaft, and described pump shaft drives described wheel rotation, thus the fluid pressurization that will suck from described suction inlet；
Stator, is plugged on described inner housing, and flow velocity is collected and reduced to the liquid pressurizeed by described impeller through described stator, and is discharged by described outlet；
Described frequency conversion motor includes: the motor shaft of motor body and the axially described elastic coupler of connection, also includes the frequency-variable controller being integrally disposed in described motor body, and described frequency conversion motor drives described pump shaft to rotate by described motor shaft and elastic coupler.
2. a kind of frequency variation multiple stage centrifugal pump according to claim 1, it is characterised in that described frequency conversion motor is described frequency-variable controller and motor body integral type integrated morphology.
3. a kind of frequency variation multiple stage centrifugal pump according to claim 2, it is characterised in that described frequency conversion motor also has wireless blue tooth module.
4. a kind of frequency variation multiple stage centrifugal pump according to claim 2, it is characterised in that described frequency conversion motor also has GPRS module, transmits a signal to, by GPRS, the centralized-control center that outer monitoring is indoor, it is achieved wireless remote monitering.
5. a kind of frequency variation multiple stage centrifugal pump according to claim 2, it is characterised in that described frequency conversion motor also has the COM1 based on industrial bus agreement, by industrial bus protocol realization networking.
6. a kind of frequency variation multiple stage centrifugal pump according to claim 2, it is characterised in that described frequency conversion motor equipped with touch panel device to realize local operation.
7. a kind of frequency variation multiple stage centrifugal pump according to any one of claim 1 to 6, it is characterised in that described frequency-variable controller is bolted on described motor body and is integrally forming；External power source is connected with described frequency-variable controller by being arranged on the power interface of described motor body；Described motor body also has input/output port for exporting the ancillary equipment in control signal control system；It is connected the input for different frequency power supply by power supply terminal with described motor body by the power supply of described frequency-variable controller frequency modulation.
8. a kind of frequency variation multiple stage centrifugal pump according to claim 7, it is characterised in that described impeller is axially positioned by described axle sleeve and spacer ring.
9. a kind of frequency variation multiple stage centrifugal pump according to claim 8, it is characterised in that first impeller in described impeller is first stage impeller, and described first stage impeller axially positions by being socketed in the axis head nut of described pump shaft end；Having multiple secondary impeller after described first stage impeller, last impeller is impeller.
10. a kind of frequency variation multiple stage centrifugal pump according to claim 9, it is characterised in that described stator includes:
First stator, one end of described first stator is plugged on described sliding bearing, and the other end is plugged on described inner housing, is first-level guide blade during the described first stator described first stage impeller of correspondence；
Second stator, one end of described second stator is plugged on described inner housing, is secondary stator, is final stage stator during corresponding described impeller during the corresponding described secondary impeller of described second stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620061225.2U CN205371016U (en) | 2016-01-21 | 2016-01-21 | Frequency conversion multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620061225.2U CN205371016U (en) | 2016-01-21 | 2016-01-21 | Frequency conversion multistage centrifugal pump |
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| Publication Number | Publication Date |
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| CN205371016U true CN205371016U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620061225.2U Active CN205371016U (en) | 2016-01-21 | 2016-01-21 | Frequency conversion multistage centrifugal pump |
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| CN (1) | CN205371016U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479375A (en) * | 2017-07-28 | 2017-12-15 | 天津城建大学 | Regulate and control the method for step pressurised seawater desalination system Element Flux balance degree |
-
2016
- 2016-01-21 CN CN201620061225.2U patent/CN205371016U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479375A (en) * | 2017-07-28 | 2017-12-15 | 天津城建大学 | Regulate and control the method for step pressurised seawater desalination system Element Flux balance degree |
| CN107479375B (en) * | 2017-07-28 | 2020-07-28 | 天津城建大学 | Method for regulating and controlling flux equilibrium degree of elements of step-pressurized seawater desalination system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180214 Address after: 201706, 6355, 2, 3, North East Road, Qingpu District, Shanghai Patentee after: Shanghai Han Automation Technology Co., Ltd. Address before: 201706 Shanghai, Qingpu District, Hong Kong Road, No. 6355 Patentee before: Chi Quan |
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| TR01 | Transfer of patent right |