CN106837861A - A kind of draught fan impeller and the method that denitration dilution wind system pipeline air quantity is improved with it - Google Patents
A kind of draught fan impeller and the method that denitration dilution wind system pipeline air quantity is improved with it Download PDFInfo
- Publication number
- CN106837861A CN106837861A CN201710108872.3A CN201710108872A CN106837861A CN 106837861 A CN106837861 A CN 106837861A CN 201710108872 A CN201710108872 A CN 201710108872A CN 106837861 A CN106837861 A CN 106837861A
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- CN
- China
- Prior art keywords
- draught fan
- fan impeller
- air quantity
- wheel hub
- pipeline
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of draught fan impeller, including：Wheel cap, wheel hub, multiple linear leafs and multiple short blades, the linear leaf and the short blade are located between the wheel cap and the wheel hub and are along the circumferential direction uniformly alternately arranged, and the wheel hub is provided with the perforation that motor output shaft is passed through and fixed.Present invention also offers a kind of the method that denitration dilutes wind system pipeline air quantity is improved with the draught fan impeller.Beneficial effects of the present invention are：By changing impeller, the effective power of blower fan is improve, while reducing power consumption, pipeline dilution air quantity can be improved, it is time saving and energy saving, reduce investment outlay, make air quantity and ammonia empty than reaching normal value.
Description
Technical field
The present invention relates to denitrating system technical field, denitration is improved in particular to a kind of draught fan impeller and with it dilute
The method for releasing wind system pipeline air quantity.
Background technology
In power plant denitration new construction, denitration dilution wind system composition is connected for dilution air with dilution wind pipeline,
Blower fan starts and passes through pipeline, there is provided certain dilution air quantity mixes with ammonia spraying amount, reaches normal ammonia and air mixture ratio.
First, less than normal if as the capacity motor of the dilution air of a variety of causes selection, then the dilution air quantity for providing is relatively low so that ammonia
Sky influences unit denitrating system bringing normally into operation than abnormal；Second, if the dilution wind pipeline for calculating selection is off size suitable,
After dilution air puts into operation, dilution air quantity is relatively low so that ammonia is empty than unqualified, same influence denitrating system bringing normally into operation.
Both the above reason causes dilution air quantity relatively low, otherwise common solution ventilating fan, otherwise modification pipeline.But
The engineering finished for having constructed, need to be eager the unit for putting into operation, and will cause construction costs raising and the increase of difficulty of construction,
Waste time and energy, influence the duration.
The content of the invention
To solve the above problems, denitration dilution wind system is improved it is an object of the invention to provide a kind of draught fan impeller and with it
The method of road air quantity under the overall leadership, the draught fan impeller in original system is changed, and improves pipeline dilution air quantity.
The invention provides a kind of draught fan impeller, including：Wheel cap, wheel hub, multiple linear leafs and multiple short blades, the length
Blade and the short blade are located between the wheel cap and the wheel hub and are along the circumferential direction uniformly alternately arranged, on the wheel hub
It is provided with the perforation that motor output shaft is passed through and fixed.
Used as further improvement of the invention, the linear leaf is 16.
Used as further improvement of the invention, the short blade is 16.
Used as further improvement of the invention, the linear leaf is forward inclined type.
Used as further improvement of the invention, the short blade is circular arc.
The method that denitration dilutes wind system pipeline air quantity is improved present invention also offers a kind of, it is dilute that the method retains former denitration
The blower fan and pipeline of wind system pipeline are released, the draught fan impeller of former denitration dilution wind system pipeline is replaced by foregoing blower fan leaf
Wheel.
Beneficial effects of the present invention are：
Blade increases, including two kinds of blades of form, can isolate the circulation whirlpool in gas channel between linear leaf, it is to avoid
The influence to runner circulation area is vortexed, centrifugal blower internal flow loss is greatly lowered, so as to improve centrifugal blower
Power output, reduces operation consumption.Simultaneously as linear leaf uses circular arc using forward inclined type, short blade, reduce centrifugation wind
Machine impeller channel blockage factor, further improves the effective power of centrifugal blower, while reducing power consumption, improves the blast of pipeline
Power.Therefore, after changing this draught fan impeller, due to the raising of power of fan, pipeline dilution air quantity, time saving and energy saving, section can be improved
Investment-saving, makes air quantity and ammonia empty than reaching normal value, it is ensured that the normal operation of former machine set system.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the draught fan impeller described in the embodiment of the present invention.
In figure,
1st, wheel cap；2nd, wheel hub；3rd, linear leaf；4th, short blade；5th, perforate.
Specific embodiment
The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.
Embodiment 1, as shown in figure 1, a kind of draught fan impeller of the embodiment of the present invention, including：Wheel cap 1, wheel hub 2,16 are long
Blade 3 and 16 short blades 4.Linear leaf 3 and short blade 4 are located between wheel cap 1 and wheel hub 2 and are circumferentially uniformly alternately arranged,
Wheel hub 2 is provided with the perforation 5 that motor output shaft is passed through and fixed.Wherein, linear leaf 3 is forward inclined type, and short blade 4 is circular arc.
Embodiment 2, a kind of to improve the method that denitration dilutes wind system pipeline air quantity, the method retains former denitration dilution wind system
The blower fan and pipeline in road under the overall leadership, the draught fan impeller of former denitration dilution wind system pipeline is replaced by the draught fan impeller in embodiment 1.
The impeller of blower fan is only 16 linear leafs of forward inclined type before being changed in original system, and the flow of blower fan is 6000NM3/
H, total head are 6000Pa, rotating speed is 2970rpm, power of motor is 22KW, inlet pressure is 96.42KPa.
After changing impeller, the impeller of blower fan remains with 16 linear leafs of forward inclined type and increased 16 short blades.Blower fan
Flow be 8036NM3/ H, total head are that 7391Pa, rotating speed are that 2970rpm, power of motor are that 23KW, inlet pressure are constant, still for
96.42KPa。
After draught fan impeller change, total leaf number amount increases, while including two kinds of blades of form, between linear leaf being isolated
Circulation whirlpool in gas channel, it is to avoid influence of the vortex to runner circulation area, is greatly lowered centrifugal blower internal flow
Loss, so as to improve the power output of centrifugal blower, reduces operation consumption.Simultaneously as linear leaf is using forward inclined type, short
Blade uses circular arc, reduces centrifugal blower fan blade wheel flow blockage coefficient, further improves the effective power of centrifugal blower, while
Reduce power consumption.Improve the wind pressure of pipe-line system.Therefore, after changing this draught fan impeller, due to the raising of power of fan, can be with
Pipeline dilution air quantity is improved, it is time saving and energy saving, reduce investment outlay, make air quantity and ammonia empty than reaching normal value, it is ensured that former denitrating system
Safe and reliable normal operation.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of draught fan impeller, it is characterised in that including：Wheel cap (1), wheel hub (2), multiple linear leafs (3) and multiple short blades
(4), the linear leaf (3) and the short blade (4) are between the wheel cap (1) and the wheel hub (2) and circumferentially uniform
It is alternately arranged, the wheel hub (2) is provided with the perforation (5) that motor output shaft is passed through and fixed.
2. draught fan impeller according to claim 1, it is characterised in that the linear leaf (3) is 16.
3. draught fan impeller according to claim 1, it is characterised in that the short blade (4) is 16.
4. draught fan impeller according to claim 1, it is characterised in that the linear leaf (3) is forward inclined type.
5. draught fan impeller according to claim 1, it is characterised in that the short blade (4) is circular arc.
6. a kind of draught fan impeller with as described in any one in claim 1-5 improves denitration dilution wind system pipeline air quantity
Method, it is characterised in that the method retains the blower fan and pipeline that former denitration dilutes wind system pipeline, and former denitration is diluted into wind system
The draught fan impeller of pipeline is replaced by the draught fan impeller any one of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108872.3A CN106837861A (en) | 2017-04-11 | 2017-04-11 | A kind of draught fan impeller and the method that denitration dilution wind system pipeline air quantity is improved with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710108872.3A CN106837861A (en) | 2017-04-11 | 2017-04-11 | A kind of draught fan impeller and the method that denitration dilution wind system pipeline air quantity is improved with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106837861A true CN106837861A (en) | 2017-06-13 |
Family
ID=59133632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710108872.3A Pending CN106837861A (en) | 2017-04-11 | 2017-04-11 | A kind of draught fan impeller and the method that denitration dilution wind system pipeline air quantity is improved with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106837861A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312857A (en) * | 2011-08-25 | 2012-01-11 | 张家港市东丰特种风机有限公司 | Impeller of heated-air circulation fan |
| CN102506029A (en) * | 2011-12-29 | 2012-06-20 | 中联重科股份有限公司 | Centrifugal fan impeller and centrifugal fan |
| CN102562651A (en) * | 2012-03-08 | 2012-07-11 | 江苏大学 | High-efficiency wind-powered centrifugal pump impeller |
| CN103016400A (en) * | 2012-12-10 | 2013-04-03 | 中联重科股份有限公司 | Centrifugal fan impeller, centrifugal fan and snow blowing vehicle |
| CN103062112A (en) * | 2013-01-10 | 2013-04-24 | 中联重科股份有限公司 | Road cleaning equipment and centrifugal fan impeller thereof |
| CN203384065U (en) * | 2013-06-04 | 2014-01-08 | 上海布威重工机械有限公司 | Multi-vane fan |
| CN206487684U (en) * | 2017-02-27 | 2017-09-12 | 大唐环境产业集团股份有限公司 | A kind of impeller for improving dilution wind system pipeline air quantity |
-
2017
- 2017-04-11 CN CN201710108872.3A patent/CN106837861A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312857A (en) * | 2011-08-25 | 2012-01-11 | 张家港市东丰特种风机有限公司 | Impeller of heated-air circulation fan |
| CN102506029A (en) * | 2011-12-29 | 2012-06-20 | 中联重科股份有限公司 | Centrifugal fan impeller and centrifugal fan |
| CN102562651A (en) * | 2012-03-08 | 2012-07-11 | 江苏大学 | High-efficiency wind-powered centrifugal pump impeller |
| CN103016400A (en) * | 2012-12-10 | 2013-04-03 | 中联重科股份有限公司 | Centrifugal fan impeller, centrifugal fan and snow blowing vehicle |
| CN103062112A (en) * | 2013-01-10 | 2013-04-24 | 中联重科股份有限公司 | Road cleaning equipment and centrifugal fan impeller thereof |
| CN203384065U (en) * | 2013-06-04 | 2014-01-08 | 上海布威重工机械有限公司 | Multi-vane fan |
| CN206487684U (en) * | 2017-02-27 | 2017-09-12 | 大唐环境产业集团股份有限公司 | A kind of impeller for improving dilution wind system pipeline air quantity |
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