CN201810586U - Model for series of energy-saving fans of circulating fluidize bed boiler - Google Patents
Model for series of energy-saving fans of circulating fluidize bed boiler Download PDFInfo
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- CN201810586U CN201810586U CN2010202799529U CN201020279952U CN201810586U CN 201810586 U CN201810586 U CN 201810586U CN 2010202799529 U CN2010202799529 U CN 2010202799529U CN 201020279952 U CN201020279952 U CN 201020279952U CN 201810586 U CN201810586 U CN 201810586U
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- air inlet
- impeller
- intake grill
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Abstract
A model for a series of energy fans of a circulating fluidize bed boiler comprises a casing, an impeller, an air inlet and a transmission unit, and is characterized in that the impeller is composed of twelve blades, an impeller cap, an impeller disc and a hub. The twelve backward plate-shaped blades are distributed along the periphery of the impeller, are welded between the arc impeller cap and the plane impeller disc and are assembled with the hub. The casing is a volute casing made of panel through welding. The air inlet is in welding structure, and the mold line of the air inlet is in cone-arc shape converged axially. An inclined tapered eccentric air inlet and an air inlet chamber can be installed at the air inlet, wherein the air inlet chamber is a part which transforms the air current to flow axially from radial flowing; the air inlet is the inclined tapered eccentric air inlet; and the air inlet chamber and the air inlet are both in welding structure made of steel plates. The model has wide application range, high efficiency, energy-saving effect, wide high-performance area and low noise. Dynamic differential pressure between an outlet and an inlet is small so that device number is reduced. Difference between F-type performance and D-type performance is small, and accordingly the model is an idle model within a low rate and middle and high pressure.
Description
Technical field
The utility model relates to a kind of blower fan, specifically relates to a kind of 6-24 type circulating fluidized bed boiler energy-saving fan series model.
Background technique
The blower fan great majority of Domestic market sale at present are the 60 to 70's development product, as series product such as 4-73,4-72,9-19,9-26,5-48,6-48, T4-72, also use widely in every field so far.Some enterprises are not by still satisfying growing market demand far away with universities and colleges' associating or introduction and some new products of independent development in recent years, also have very big potentiality to dig for the fan performance level in some field.Serious competition form in the face of blower fan market only improves constantly the blower fan technical merit, just can be competitive.And the aeroperformance of blower fan is its most important component.One typhoon machine structure is good again, appearance quality is good again, if performance does not reach customer requirements, can cause very big economic loss to the user, to entrust mechanical industry blower fan product quality supervision inspection center to carry out the case of technology ruling a lot of because of the blower fan quality problems in recent years, and problem much all goes out aspect aeroperformance.In the Selection and Design process, in order to satisfy user's performance parameter, manufactory selects in existing sample less than suitable blower fan type in addition, and certain model blower fan is improved, and does not very hold again.Because type selecting is improper, needs only pipe network when blower fan turns round at the scene and change blower fan slightly with regard to surge.Although the flow pressure of blower fan can be chosen sometimes, because not in efficient district, or original peak efficiency is just not high, selects for use power of motor very big, can't compete with other competitive bidding units, so just loses the chance of competitive bidding.
For satisfying the demand of China's rapid economy development to blower fan, improve the technical merit of blower fan product, implement national information portion about the eliminating of outmoded products progressively, promote new product spirit.Shenyang Blower research institute is with the fan design of internal class and the advantage of experimental study ability, set up the project in March, 2005, blower fan series type spectrum at existing most manufacturer production, in line with plugging a gap, being target with energy-efficient, and the principle that replaces broad-spectrum other series product is as far as possible developed this blower fan series model.By the time in 5 years, Shenyang Blower research institute was through manufacturing and designing, and carried out test of many times research, finished this project.This blower fan series model has reached re-set target.
The model utility content
The purpose of this utility model provides circulating fluidized bed boiler energy-saving fan series model, and trade name is a 6-24 circulating fluidized bed boiler energy-saving fan series model.
The technological scheme that adopts is:
Circulating fluidized bed boiler energy-saving fan series model comprises casing, impeller, intake grill and transmission group, it is characterized in that: described impeller is formed to template blade, awl arc wheel cap, plate shaped wheel disc and wheel hub after 12.Circumferentially uniform after 12 to template blade edge, and be welded between awl arc wheel cap and the plate shaped wheel disc, be assembled with wheel hub.Casing is the volute body that sheet material is welded, and intake grill is a welded structure, and its molded lines is the awl of convergent vertically arc.
Can install the inclined to one side intake grill+inlet box of oblique conic at above-mentioned intake grill place.Described inlet box is to change air-flow the parts of axial flow into by Radial Flow, and intake grill is the inclined to one side intake grill of oblique conic, and inlet box and intake grill are welded-steel plate construction.
Described transmission group comprises main shaft, bearing housing etc., is known technology.
The utility model purposes:
Blower fan series model of the present utility model belongs to small flow, mesohigh category.When not bringing gas tank into, the highest fan efficiency is 82.3%.When bringing gas tank into, the highest fan efficiency is 79.39%.With the blower fan series blower fan of this modeling design applicable to 35-410 ton/time circulating fluidized bed boiler primary air fan, overfire air fan and high-head induced draught fan, high pressure forced ventilation, gas-blowing engine, sintering main exhauster etc.
Because product line designs by modeling, so any plane No. product of flow passage component design is all within protection, can amplify on year-on-year basis or dwindles and make series product by described impeller, suction port, casing size.
The type selecting advantage
A, performance advantage
Give an example 1: certain circulating fluidized bed boiler fan design parameter: Pa=101325Pa; ρ=1.2kg/m3 flow=46345 (m3/h); Total head=7484Pa;
Type selecting scheme 1:, satisfy above parameter and can only select if there is not the 6-24 series model
7-16No10.6D(n＝2980r/min)
Type selecting scheme 2: the 6-24 series model has been arranged now, herein at certain non dimensional curve section (former blank)
Optional 6-24No10D (n=2980r/min).
Table 1 has provided under same rotating speed and the import density, the performance comparison result of 6-24No10D and 7-16No10.6D.
Table 1
As seen from Table 1, for satisfying design parameter, as select 7-16No10.6D, internal efficiency is 65%, is 82.3% and select the 6-24No10D impeller adiabatic efficiency, and impeller adiabatic efficiency can improve 26.6%, and impeller power can reduce by 21%, can significantly save the energy.And plane No. is little, but material-saving, reduces cost.The exit port area ratio of 6-24 blower fan is 0.64 in addition, and the exit port area ratio of 7-16 blower fan is 0.47, and described same with the front, for satisfying same differential static pressure, 6-24 can reduce plane No..
B, F formula are compared performance with the D formula and are differed little
At same flow point, fan design is the F formula than D formula pressure and a lot of problems of decrease in efficiency (general pressure and decrease in efficiency about 8%) at the small flow blower fan, we to the 6-24No8 model design F formula structure, promptly bring gas tank, radial air inlet into.Table 2 has provided the F formula and the D formula zero dimension performance comparison of 7 operating points.
Table 2
7 operating point F formulas are compared with the D formula as seen from Table 2, and pressure is maximum to descend 2.3%, and impeller adiabatic efficiency is maximum to descend 4.9%.Changed the small flow blower fan, when F formula (radial air inlet) because the impeller inlet flow field is inhomogeneous and axle to the obstruction of inlet air flow, the situation that pressure and decrease in efficiency are a lot.
The utlity model has following advantage
1, of many uses, filled up ventilator series type spectrum blank.
2, impeller is back to the template blade, so motor is difficult for overload.
3, energy-efficient, efficiently distinguish wide, noise is low.
4, outlet and import dynamic pressure difference are little, can reduce plane No..
5, blade import wearing and tearing are little, can prolong the working life of impeller.
6, easy to process.
7, F formula performance and D formula performance differ little.
It is the ideal model of small flow, mesohigh category.
Description of drawings
Fig. 1 is a kind of example structure schematic representation of the present utility model.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the blade wheel structure schematic representation.
Fig. 4 is the right elevation of Fig. 3.
Fig. 5 is the blower fan model structure schematic representation that is equiped with inlet box.
Fig. 6 is 6-24 circulating fluidized bed boiler blower fan No8 model zero dimensional performance curve figure, and wherein Φ is that flow coefficient, Ψ are that coefficient of total pressure, λ are power factor, η r impeller adiabatic efficiency.
Embodiment
Embodiment one
Circulating fluidized bed boiler energy-saving fan series model (NO8 type) for not bringing gas tank type (D formula) into, comprises casing 1, impeller 2, intake grill 3 and transmission group 4, and transmission group 4 comprises main shaft, bearing housing etc., is known technology.It is characterized in that: described impeller is formed to template blade 5, awl arc wheel cap 6, plate shaped wheel disc 7 and wheel hub 8 after 12.Circumferentially uniform after 12 to template blade edge, and be welded between awl arc wheel cap 6 and the plate shaped wheel disc 7, be assembled with wheel hub 8.The volute body 1 that casing 1 is welded for sheet material, intake grill 3 is a welded structure, its molded lines is the awl of convergent vertically arc.
Embodiment two
Circulating fluidized bed boiler energy-saving fan series model (NO8 type) for bringing gas tank type (F formula) into, comprises casing 1, impeller 2, intake grill 3, inlet box 9 and transmission group 4.Impeller 1 and casing 2, transmission group 4 are structurally identical when not bringing gas tank into.Its inlet box is to change air-flow the parts of axial flow into by Radial Flow, and intake grill is the inclined to one side intake grill of oblique conic, and inlet box 9 and intake grill 3 are welded-steel plate construction.
The flow passage component major character:
(1) impeller
The blade exit diameter is that 800mm, inlet diameter are that 340mm, width are that 108mm, exit width are that 37mm, blade outlet angle are 50 °.
(2) intake grill
When not bringing gas tank into, inlet diameter is that 400mm, width are 260mm.When bringing gas tank into, inlet diameter is that 490mm, width are 155mm, import and export between the axis apart from being 91mm.
(3) casing
Width 183mm, casing export center are that 540.3mm, casing outlet are 438.8mmX183mm to the casing center.
(4) inlet box
Inletpiston is 584mm to the outlet axial line distance.Import is 608mmX256mm.
Zero dimensional performance curve and parameter attribute: when not bringing gas tank into, flow coefficient 0.0396, pressure coefficient 0.5466, power factor 0.0263, fan efficiency 82.3%; When bringing gas tank into, flow coefficient 0.0396, pressure coefficient 0.5431, power factor 0.0271, fan efficiency 79.39%.
Because product line designs by modeling, so the above-mentioned flow passage component size of impeller, intake grill and casing can amplify on year-on-year basis or dwindle and make series product, all within protection.
Claims (2)
1. circulating fluidized bed boiler energy-saving fan series model, comprise casing (1), impeller (2), intake grill (3), it is characterized in that: described impeller by after 12 to template blade (5), awl arc wheel cap (6), plate shaped wheel disc (7) and wheel hub (8) are formed, circumferentially uniform after 12 to template blade (5) edge, and be welded between awl arc wheel cap (6) and the plate shaped wheel disc (7), be assembled with wheel hub (8), the volute body of casing (1) for being welded by sheet material, intake grill (3) is a welded structure, is equiped with inlet box (9) or does not bring bellows (9) in intake grill (3) outer end; When intake grill (3) outer end was equiped with inlet box (9), intake grill (3) was the inclined to one side intake grill of oblique conic; When inlet box was not installed in intake grill (3) outer end, the molded lines of intake grill (3) was the awl of convergent vertically arc.
2. circulating fluidized bed boiler energy-saving fan series model according to claim 1 is characterized in that:
1. impeller
The blade exit diameter is that 800mm, inlet diameter are that 340mm, width are that 108mm, exit width are that 37mm, blade outlet angle are 50 °;
2. intake grill
When not bringing gas tank into, inlet diameter is that 400mm, width are 260mm;
When bringing gas tank into, inlet diameter is that 490mm, width are 155mm, import and export between the axis apart from being 91mm;
3. casing
Width 183mm, casing export center are that 540.3mm, casing outlet are 438.8mmX183mm to the casing center;
When 4. bringing gas tank into, the inletpiston of inlet box (9) is 584mm to the outlet axial line distance, and import is 608mmX256mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202799529U CN201810586U (en) | 2010-08-03 | 2010-08-03 | Model for series of energy-saving fans of circulating fluidize bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202799529U CN201810586U (en) | 2010-08-03 | 2010-08-03 | Model for series of energy-saving fans of circulating fluidize bed boiler |
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| Publication Number | Publication Date |
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| CN201810586U true CN201810586U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202799529U Expired - Lifetime CN201810586U (en) | 2010-08-03 | 2010-08-03 | Model for series of energy-saving fans of circulating fluidize bed boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345636A (en) * | 2010-08-03 | 2012-02-08 | 沈阳鼓风机研究所(有限公司) | Energy-saving circulating fluidized bed boiler fan series model |
| CN105508294A (en) * | 2016-01-13 | 2016-04-20 | 沈阳鼓风机研究所(有限公司) | Energy-saving fan series model of circulating fluidized bed boiler |
| CN105508295A (en) * | 2016-01-13 | 2016-04-20 | 沈阳鼓风机研究所(有限公司) | Circulating fluidized bed boiler energy-saving fan series model |
| CN106015049A (en) * | 2016-07-12 | 2016-10-12 | 上海通用风机股份有限公司 | Air inlet box device of ventilator |
-
2010
- 2010-08-03 CN CN2010202799529U patent/CN201810586U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345636A (en) * | 2010-08-03 | 2012-02-08 | 沈阳鼓风机研究所(有限公司) | Energy-saving circulating fluidized bed boiler fan series model |
| CN102345636B (en) * | 2010-08-03 | 2014-04-02 | 沈阳鼓风机研究所(有限公司) | Energy-saving circulating fluidized bed boiler fan series model |
| CN105508294A (en) * | 2016-01-13 | 2016-04-20 | 沈阳鼓风机研究所(有限公司) | Energy-saving fan series model of circulating fluidized bed boiler |
| CN105508295A (en) * | 2016-01-13 | 2016-04-20 | 沈阳鼓风机研究所(有限公司) | Circulating fluidized bed boiler energy-saving fan series model |
| CN106015049A (en) * | 2016-07-12 | 2016-10-12 | 上海通用风机股份有限公司 | Air inlet box device of ventilator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110427 Effective date of abandoning: 20140402 |
|
| RGAV | Abandon patent right to avoid regrant |