CN108252943A - Specified centrifugal blower flow and the method for the pressure slope of curve - Google Patents
Specified centrifugal blower flow and the method for the pressure slope of curve Download PDFInfo
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- CN108252943A CN108252943A CN201810014874.0A CN201810014874A CN108252943A CN 108252943 A CN108252943 A CN 108252943A CN 201810014874 A CN201810014874 A CN 201810014874A CN 108252943 A CN108252943 A CN 108252943A
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- impeller
- centrifugal blower
- pressure
- flow
- curve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
Abstract
The present invention relates to a kind of specified centrifugal blower flows and the method for the pressure slope of curve, the motor of the centrifugal blower is mounted in rack and is connect by bearing arrangement with impeller, impeller is mounted in spiral case, protecgulum installs sealing ring additional and connects together with spiral case, and the gas outlet of current collector is connected with the air inlet of spiral case；This method includes testing fan performance using different impeller outlet dimension widths and analyzing test data, the specific steps are：1）Fan performance is tested using different impeller outlet dimension widths, measures the pressure-dependent volume of data of flow respectively；2）Test data is analyzed, reaches specified performance by the way that impeller outlet size is adjusted, i.e., specified centrifugal blower flow and pressure slope of a curve.
Description
Technical field
The present invention relates to a kind of centrifugal fan, especially a kind of centrifugal blower flow and the pressure slope of curve.
Background technology
Centrifugal blower model currently on the market is varied, and centrifugal blower is by the mechanical energy of input, improves gas
Pressure is supplied gas the machinery of body side by side, it is a kind of driven fluid machinery.Centrifugal blower is widely used in factory, mine, tunnel, cold
But ventilation, dust discharge and the cooling of tower, vehicle, ship and building；The ventilation of boiler and industrial furnace and air inducing；Air conditioning is set
Cooling and ventilation in standby and domestic electric appliance；It the drying of cereal and selects and recommends；The inflation and propulsion of wind-tunnel wind regime and aircushion vehicle
Deng.Wind turbine resistance of pipe system of wind turbine in practical application can change with the difference of technique, the product of wind turbine pipe network in operation
The other factors such as ash also result in resistance of pipe system and change, and resistance of pipe system, which changes, inevitably results in changing for compressor flow
Become, for compressor flow is made to adapt to resistance of pipe system variation to reach the centrifugal blower of specified performance, that is, specified performance curve is oblique
The centrifugal blower of rate, so that the pressure flow variation of wind turbine remains to meet certain relationship under different resistance of pipe system.Therefore,
Those skilled in the art urgently find a kind of fan performance that changes under different resistance of pipe system to reach the method for certain slope, with
Just preferably meet the needs of practical application.
Centrifugal blower is substantially a kind of fluid mechanical device of trandfer fluid.The Pressure-flow curves of centrifugal blower can be near
As be described as parabola, on parabola choose very little one section of section, due to section is smaller can be the variation in this section of section
See linear change as.Different type blower pressure-flow performance curve is analyzed it is found that slope is not quite similar, slope
Representative meaning is expressed as the change for causing flow corresponding to the variation of different pressures, however wind turbine to a certain extent
Performance curve slope can reflect the variation performance of wind turbine, be generally required to specify a certain certain slope curve according to actual demand
Centrifugal blower.
Invention content
Meet the particular characteristic slope of curve to solve the problems, such as the wind turbine of different model to be selected, the present invention proposes
A kind of specified centrifugal blower flow and the method for the pressure slope of curve, this method is by changing impeller size at fan outlet
To reach the particular characteristic slope of curve, rational in infrastructure, efficiency the is high centrifugal fan of width.
In order to solve the above-mentioned technical problem, the technical scheme is that：A kind of specified centrifugal blower flow and pressure
The method of the energy slope of curve, the motor of the centrifugal blower is mounted in rack to be connect by bearing arrangement with impeller, impeller installation
In spiral case, protecgulum installs sealing ring additional and connects together with spiral case, and the gas outlet of current collector is connected with the air inlet of spiral case；This method
It is specific including being tested using different impeller outlet dimension widths fan performance and test data being analyzed
Step is：
1) fan performance is tested using different impeller outlet dimension widths
Impeller diameter uses a certain designated length, and 4mm, 3.2mm, 2.8mm is respectively adopted in impeller outlet dimension width, respectively
Measure the pressure-dependent volume of data of flow；
2) test data is analyzed
Impeller other parameters are identical, only the wind turbine to different impeller outlet width sizes, analyze its flow with pressure
Data variation, and by the pressure-dependent relationship of its flow, corresponding to the different impeller of exit width size, with a certain determining
Impeller diameter, the performance curve slope that impeller outlet dimension width is 2.8mm is standard, by big to impeller outlet width size
Small be adjusted reaches specified performance, i.e., the slope of specified centrifugal blower performance curve.
The beneficial effects of the invention are as follows：
Present invention impeller its rate of discharge pressure-dependent data different to outlet size are analyzed, and utilization is above-mentioned
The pressure-dependent relationship of flow of the different impeller of outlet size is reflected in the different leaf of outlet size by experiment data measured
In the pressure-dependent relational graph of flow of wheel, with a certain determining diameter, impeller outlet dimension width is the performance curve of 2.8mm
Slope is standard, by the way that impeller outlet size is adjusted to reach this slope.The data that measured by experiment and points
Analysis shows that the oblique of i.e. a kind of specified centrifugal blower performance curve of specified performance can be reached by adjusting impeller outlet size
Rate.
Description of the drawings
Fig. 1 is centrifugal fan structure schematic diagram；
Fig. 2 is the schematic diagram that impeller outlet dimension width is 4mm；
Fig. 3 is to take turns the schematic diagram that outlet size width is 3.2mm；
Fig. 4 is the schematic diagram that impeller outlet dimension width is 2.8mm；
Fig. 5 is the pressure-dependent relational graph of flow of the different impeller of outlet size.
Specific embodiment
The present invention will be further described in the following with reference to the drawings and specific embodiments.
The method of the specified centrifugal blower performance curve slope of the present invention, as shown in Figure 1, centrifugal blower packet spiral case 1, the leaf
Wheel 2, motor 3, protecgulum 4, current collector 5, sealing ring 6.
1) fan performance is tested using different schemes
Technical solution one, impeller diameter use a certain designated length, and impeller outlet dimension width uses 4mm, such as Fig. 2 at this time
It is shown.Motor 3 is mounted in rack and is connect by bearing arrangement with impeller 2, and impeller 2 is mounted in spiral case 1, and protecgulum 4 installs additional close
Seal ring 6 connects together with spiral case 1, and the gas outlet of current collector 5 is connected with the air inlet of spiral case 1.Experiment measures flow with pressure at this time
The volume of data such as following table of power variation.
| Pressure (pa) | 3354.0 | 3315.2 | 3300.1 | 3253.0 | 3000.2 |
| Flow (m3) | 213.5 | 323.4 | 240.0 | 442.8 | 300.0 |
Technical solution two, impeller diameter use a certain designated length, and impeller outlet dimension width uses 3.2mm at this time, such as
Shown in Fig. 3.Motor 3 is mounted in rack and is connect by bearing arrangement with impeller 2, and impeller 2 is mounted in spiral case 1, and protecgulum 4 installs additional
Sealing ring 6 connects together with spiral case 1, and the gas outlet of current collector 5 connects experiment at this time with the air inlet of spiral case 1 and measures flow with pressure
The volume of data such as following table of power variation.
| Pressure (pa) | 3375.5 | 3327.3 | 3284.1 | 3232.9 | 3191.3 |
| Flow (m3) | 239.2 | 265.1 | 291.0 | 321.2 | 347.9 |
Technical solution three, impeller diameter use a certain designated length, and impeller outlet dimension width uses 2.8mm at this time, such as
Shown in Fig. 4.Motor 3 is mounted in rack and is connect by bearing arrangement with impeller 2, and impeller 2 is mounted in spiral case 1, and protecgulum 4 installs additional
Sealing ring 6 connects together with spiral case 1, and the gas outlet of current collector 5 connects experiment at this time with the air inlet of spiral case 1 and measures flow with pressure
The volume of data such as following table of power variation.
| Pressure (pa) | 3241.1814 | 3175.362 | 3128.612 | 3095.853 | 3061.06 |
| Flow (m3) | 241.94853 | 276.3745 | 302.4321 | 318.9625 | 339.746 |
Different to outlet size its rate of discharge of impeller according to technical solution one, two with three are pressure-dependent
Data are analyzed, using above-mentioned experiment data measured that the pressure-dependent relationship of flow of the different impeller of outlet size is anti-
It reflects in Figure 5, with a certain determining diameter, the performance curve slope that impeller outlet dimension width is 2.8mm is standard, by leaf
Wheel outlet size size is adjusted to reach this slope.The data that are measured by experiment and analysis shows can be by adjusting leaf
Wheel outlet size size reaches i.e. a kind of slope of specified centrifugal blower performance curve of specified performance.
Claims (1)
1. a kind of specified centrifugal blower flow and the method for the pressure slope of curve, the motor of the centrifugal blower is mounted on rack
Upper to be connect by bearing arrangement with impeller, impeller is mounted in spiral case, and protecgulum installs sealing ring additional and connects together with spiral case, current collector
Gas outlet connected with the air inlet of spiral case；It is characterized in that：This method includes using different impeller outlet dimension widths pair
Fan performance is tested and test data is analyzed, the specific steps are：
1）Fan performance is tested using different impeller outlet dimension widths
Impeller diameter uses a certain designated length, and impeller outlet dimension width is respectively adopted 4mm, 3.2mm, 2.8mm, measures respectively
The pressure-dependent volume of data of flow；
2）Test data is analyzed
Impeller other parameters are identical, only the wind turbine to different impeller outlet width sizes, analyze data of its flow with pressure
Variation, and by the pressure-dependent relationship of its flow, corresponding to the different impeller of exit width size, with a certain determining impeller
Diameter, the performance curve slope that impeller outlet dimension width is 2.8mm is standard, by impeller outlet width size into
Row, which is adjusted, reaches specified performance, i.e., the slope of specified centrifugal blower performance curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810014874.0A CN108252943A (en) | 2018-01-08 | 2018-01-08 | Specified centrifugal blower flow and the method for the pressure slope of curve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810014874.0A CN108252943A (en) | 2018-01-08 | 2018-01-08 | Specified centrifugal blower flow and the method for the pressure slope of curve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108252943A true CN108252943A (en) | 2018-07-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810014874.0A Pending CN108252943A (en) | 2018-01-08 | 2018-01-08 | Specified centrifugal blower flow and the method for the pressure slope of curve |
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Citations (5)
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| CN204493246U (en) * | 2015-01-30 | 2015-07-22 | 哈尔滨工程大学 | A kind of lift fan system for air cushion ship model performance curve gauging means |
| CN104989669A (en) * | 2015-06-17 | 2015-10-21 | 国网天津市电力公司 | Method for reducing power consumption of mill exhauster by matching with duct resistance |
| CN106368975A (en) * | 2016-11-25 | 2017-02-01 | 沈阳鼓风机集团股份有限公司 | Control method and device for performance of PCL compressor |
| CN106438467A (en) * | 2016-12-01 | 2017-02-22 | 中国矿业大学 | Centrifugal fan and variable work condition adjustment method thereof |
-
2018
- 2018-01-08 CN CN201810014874.0A patent/CN108252943A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110153237A1 (en) * | 2008-08-29 | 2011-06-23 | Jonsson Arne F | Method and apparatus for evaluating energy savings |
| CN204493246U (en) * | 2015-01-30 | 2015-07-22 | 哈尔滨工程大学 | A kind of lift fan system for air cushion ship model performance curve gauging means |
| CN104989669A (en) * | 2015-06-17 | 2015-10-21 | 国网天津市电力公司 | Method for reducing power consumption of mill exhauster by matching with duct resistance |
| CN106368975A (en) * | 2016-11-25 | 2017-02-01 | 沈阳鼓风机集团股份有限公司 | Control method and device for performance of PCL compressor |
| CN106438467A (en) * | 2016-12-01 | 2017-02-22 | 中国矿业大学 | Centrifugal fan and variable work condition adjustment method thereof |
Non-Patent Citations (1)
| Title |
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| 简晓书等: ""小型后向离心风机叶轮叶片出口宽度对性能的试验分析"", 《风机技术》 * |
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Application publication date: 20180706 |