CN203430798U - Low-noise electric centrifugal pump - Google Patents
Low-noise electric centrifugal pump Download PDFInfo
- Publication number
- CN203430798U CN203430798U CN201320298596.9U CN201320298596U CN203430798U CN 203430798 U CN203430798 U CN 203430798U CN 201320298596 U CN201320298596 U CN 201320298596U CN 203430798 U CN203430798 U CN 203430798U
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- centrifugal pump
- water
- motor
- pipe
- pump
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Abstract
The utility model discloses a low-noise stable horizontal direct-connected electric centrifugal pump which comprises a filter screen (3), a dredging screw (4), a pressure reduction pipe (5), a throttling valve (6), a first bearing cooling containing cavity (7), a condenser motor shell (8), a second bearing cooling containing cavity (9), a connecting pipe (10), a jet pipe (11), a water inlet (16) and a water outlet (17). A conventional air cooling motor type is changed into a water cooling structure, the first bearing cooling containing cavity (7) and the condenser motor shell (8) are used for cooling the heat of a motor bearing, a stator and a rotor, a formed jet guide device is used for improving stability of the pump running under an off-design condition, so that radiation noise of the centrifugal pump in the running process is effectively reduced, running stability of the centrifugal pump is improved, and the 'quiet' design of a pipeline system is realized.
Description
Technical field
the utility model relates to a kind of electric centrifugal pump, is particularly applied to the low noise electric centrifugal water pump that urban water supply and sewerage and cabin are used.
Background technique
along with the increasingly stringent of environmental standard and the raising gradually of customer requirement, the noise that mechanical movement produces has become a problem demanding prompt solution.Electric centrifugal pump is widely used in the fields such as urban water supply and sewerage, cabin, community pumping plant, factory and air conditioner water circulating system, and along with improving constantly of revolution speed, the noise of its generation more and more badly influences resident and workman's physically and mentally healthy and safety in production.The noise of electric centrifugal pump mainly consists of noise of motor and centrifugal pump noise.Noise of motor is mainly electromagnetic noise, mechanical noise and the fan noise being produced by motor stator rotor; Centrifugal pump noise is mainly that unstable the flowing such as cavitation, backflow and Secondary Flow producing while moving under off-design behaviour causes hydrodynamic noise in pipe-line system.Therefore, the operation stability of reduction noise of motor and raising centrifugal pump is the key that realizes whole pipe-line system " calm type " design.
in prior art, reducing whole pipe-line system noise is mostly that motor noise-reducing and the noise reduction of centrifugal pump own are separately considered, by developing low noise motor and re-starting pump optimal design, thereby reach the object of the whole noise reduction of pump assembly, but this change often needs very high development cost.
Summary of the invention
the purpose of this utility model is to provide a kind of novel electric centrifugal pump, and this centrifugal pump can be not changing original pump performance, do not increase and on cost of production basis, effectively solve the larger problem of noise in centrifugal pump running.
for solving the problems of the technologies described above, the technical solution of the utility model, from the drainage of original outlet of centrifugal pump flange, through a set of filtration decompressor, is connected with motor condenser system, from condensation tube cooling water out, by the jet pipe injection impeller inlet of pump inlet flange, form water circulation.
electric centrifugal pump comprises a filter screen, dredging screw, relief pipe, throttle, the cooling cavity volume of bearing, condensation motor casing, connecting tube, jet pipe, water intake, water outlet.The utility model has designed a kind of drainage-fluidic device, and is a set of motor water cooling circulatory system by traditional motor air-cooled structure system reform, forms new horizontal direct-connected electric centrifugal pump structure.
between decompressor and motor condenser system, be provided with throttle valve, be used for controlling the flow of condensed water, the motor radiating amount when aperture of valve is moved according to pump assembly under different operating modes is determined.
compare with the horizontal direct-connected electric centrifugal water pump assembly of tradition, the utility model has been cancelled the device of fan cooled motor, makes water cooling motor housing mechanism into, has retained the major part design of original water pump and motor.Owing to there is no fan noise, and aluminum water-cooling motor cover also has well isolated effect to electromagnetic noise, and pump assembly noise reduces greatly.Because drainage fluidic device is equal to the inlet pressure that improves pump, can effectively suppress the circumfluence of pump under small flow, and improve to a certain extent the cavitation performance of pump, thus the operation stability of enhancing pump.The heat extraction of aluminum water-cooling motor cover is effective, can not impact, and aluminium product can not get rusty, thereby increased working life of product to electric pump surrounding environment.At bearing place, leave the cooling cavity volume of clutch shaft bearing, the second bearing cooling chamber, condensation tube adopts two " S " type structure wound motors, can effectively solve the cooling liquid problem that diverse location temperature rise differs greatly in water jacket in bearing heat radiation and existing water-jacket-type water-cooling electrical machine water jacket.Owing to having cancelled fan in design and having shortened the length of motor shaft, the utility model does not increase cost when producing.
described motor condenser system comprises the cooling cavity volume of clutch shaft bearing, condensation motor casing and the cooling cavity volume of the second bearing, and wherein condensation motor casing is cast on together by cast iron bracket, copper pipe and aluminum hull again.
between the solidifying system of described decompressor and motor water cooling, be provided with throttle valve, be used for controlling the flow of condensed water, the motor radiating amount when aperture of valve is moved according to pump assembly under different operating modes is determined.
the technical solution of the utility model, the working procedure of low noise electric centrifugal pump is: in motor-drive pump running, vane rotary produces lift, and the outlet of the pump housing is high pressure, and import is low pressure.High pressure water, by delivery side of pump flange runner, is drained to relief pipe through filter screen.Decompression water is introduced into motor condenser system, and its flow is controlled by the throttle connecting.Motor condenser system is comprised of the cooling cavity volume of bearing, condensation motor casing, and condensation motor casing is cast on together by cast iron bracket, copper pipe and aluminum hull again.Condensed water enters the water intake of condensation motor casing and along with copper pipe is two " S " type wound motors from the cooling cavity volume of clutch shaft bearing, homogeneous band is walked heat, finally, condensed water enters the cooling cavity volume of the second bearing through water outlet, by connecting tube, leave motor, and introduce impeller inlet by jet pipe, form water circulation.
the utility model has the advantage of, electric pump unit overall noise is low and can suppress centrifugal pump inlet backflow and raising cavitation performance, and motor radiating is even, and in pump work process, running stability is strong, can realize " calm type " operation of pipe-line system.
Accompanying drawing explanation
fig. 1 is the erection drawing of a kind of low noise electric centrifugal pump of the utility model.
fig. 2 is the condensation motor casing sectional drawing of a kind of low noise electric centrifugal pump of the utility model.
fig. 3: be the deployed configuration schematic diagram of two " S " cooling water channels of a kind of low noise electric centrifugal pump of the utility model.
in figure: 1. impeller, the 2. pump housing, 3. filter screen, 4. dredge screw, 5. relief pipe, 6. throttle, 7. the cooling cavity volume of clutch shaft bearing, 8. condensation motor casing, the 9. cooling cavity volume of the second bearing, 10. connecting tube, 11. jet pipes, 12. electric machine stator irons, 13. cast iron brackets, 14. copper pipes, 15. aluminum hulls, 16. water intakes, 17. water outlets.
Embodiment
in motor-drive pump running, impeller 1 rotation produces lift, and the outlet of the pump housing 2 is high pressure, and import is low pressure.On outlet of centrifugal pump flange, open conduction hole, the outlet(discharge) flange runner of high-pressure water pump, through filter screen 3, enters relief pipe 5 and carries out step-down, and conduction hole adds dredging screw 4 so that cleaning.Decompression water is introduced into motor condenser system, and its flow is controlled by the throttle valve 6 connecting.Throttle valve 6 is connected by conduit with the cooling cavity volume 7 of clutch shaft bearing, and the water after step-down enters condensation motor casing 8 through the cooling cavity volume 7 of clutch shaft bearing by import 16, and with copper pipe 14, is two " S " types and walks heat around electric machine casing fluxion strap.Housing is made of aluminum, and copper pipe 14 is fixed on cast iron bracket 13, and the in aggregates and cast iron bracket of described cast iron bracket, copper pipe and housing casting and copper pipe are wrapped in aluminum hull 15 walls, and water intake 16 and the water outlet 17 of described copper pipe stretch out housing.Condensed water enters the cooling cavity volume 9 of the second bearing by water outlet 17, between cavity volume and jet pipe 11, by connecting tube 10, docks.Condensed water finally causes impeller inlet by jet pipe 11, forms water circulation.
adopt above-mentioned mode of execution, first condensation motor casing is adopted and is formed from aluminium, and its quality is light and heat-transfer effect good, and the mechanical strength that cast iron bracket 13 can increase casing is set, and location when being conducive to copper pipe 14 casting.Secondly, because traditional screw type or " S " can cause the temperature difference at motor two ends, in electric machine temperature rise calculates, temperature peak is offset to coolant outlet place.The copper pipe 14 that the utility model adopts is two " S " type wound motors and is equal to and is provided with two cooling water channels, in two cooling water channels, pass into along the contrary cooling liquid of electric machine stator iron 12 axial flow direction, make to carry out heat exchange between two cooling liquids in cooling water channel, can make the temperature rise of motor diverse location keep consistent as much as possible.Finally, because drainage fluidic device is equal to the inlet pressure that improves pump, can effectively suppress the circumfluence of pump under small flow, and improve to a certain extent the cavitation performance of pump, thus the operation stability of enhancing pump.
Claims (6)
1. a low noise electric centrifugal pump, it is characterized in that: comprise a kind of drainage-fluidic device, motor water cooling system, wherein drainage-fluidic device is comprised of relief pipe (5), connecting tube (10), jet pipe (11), water intake (16) and water outlet (17); Motor water cooling system comprises the cooling cavity volume of clutch shaft bearing (7), condensation motor casing (8) and the cooling cavity volume of the second bearing (9); The cooling cavity volume of clutch shaft bearing (7) is connected by water intake (16) with condensation motor casing (8), and the cooling cavity volume of the second bearing (9) is connected by water outlet (17) with condensation motor casing (8); Described drainage-fluidic device and motor water cooling system form circulation loop at centrifugal delivery side of pump and ingress.
2. a kind of low noise electric centrifugal pump according to claim 1, is characterized in that: relief pipe (5) is connected by filter screen (3) with the water outlet of impeller (1).
3. a kind of low noise electric centrifugal pump according to claim 2, is characterized in that: between relief pipe (5) and filter screen (3), be provided with dredging screw (4); Between relief pipe (5) and the cooling cavity volume of clutch shaft bearing (7), be provided with throttle (6).
4. according to the low noise electric centrifugal pump described in claims 3, it is characterized in that: described dredging screw (4) is arranged on conduction hole place on outlet of centrifugal pump flange.
According to described in claim 1 low noise electric centrifugal pump, it is characterized in that: described centrifugal pump condensation motor casing comprises cast iron bracket (13), copper pipe (14), aluminum hull (15), described cast iron bracket (13), copper pipe (14) and aluminum hull (15) are cast into one; Cast iron bracket (13) and copper pipe (14) are wrapped in aluminum hull (15) wall.
6. according to low noise electric centrifugal pump claimed in claim 5, it is characterized in that: described copper pipe (14) is arranged on cast iron bracket (13), described copper pipe (14) is two " S " types around cast iron bracket (13), and water intake (16) and the water outlet (17) of copper pipe (14) stretch out housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320298596.9U CN203430798U (en) | 2013-05-29 | 2013-05-29 | Low-noise electric centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320298596.9U CN203430798U (en) | 2013-05-29 | 2013-05-29 | Low-noise electric centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203430798U true CN203430798U (en) | 2014-02-12 |
Family
ID=50059842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320298596.9U Expired - Fee Related CN203430798U (en) | 2013-05-29 | 2013-05-29 | Low-noise electric centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203430798U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244436A (en) * | 2013-05-29 | 2013-08-14 | 江苏大学 | Low-noise electric centrifugal pump |
| CN106026494A (en) * | 2016-07-18 | 2016-10-12 | 安徽状元郎电子科技有限公司 | Motor capable of reducing heat and noise |
| CN109139565A (en) * | 2018-11-14 | 2019-01-04 | 南京腾图节能科技有限公司 | The water pump of format bearing water-cooling structure in a kind of automatically cleaning double suction |
-
2013
- 2013-05-29 CN CN201320298596.9U patent/CN203430798U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244436A (en) * | 2013-05-29 | 2013-08-14 | 江苏大学 | Low-noise electric centrifugal pump |
| CN103244436B (en) * | 2013-05-29 | 2016-01-20 | 江苏大学 | A kind of Low-noise electric centrifugal pump |
| CN106026494A (en) * | 2016-07-18 | 2016-10-12 | 安徽状元郎电子科技有限公司 | Motor capable of reducing heat and noise |
| CN109139565A (en) * | 2018-11-14 | 2019-01-04 | 南京腾图节能科技有限公司 | The water pump of format bearing water-cooling structure in a kind of automatically cleaning double suction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20160529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |