CN102345634A - Energy-saving boiler forced and induced draft fan series model - Google Patents
Energy-saving boiler forced and induced draft fan series model Download PDFInfo
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- CN102345634A CN102345634A CN2010102434473A CN201010243447A CN102345634A CN 102345634 A CN102345634 A CN 102345634A CN 2010102434473 A CN2010102434473 A CN 2010102434473A CN 201010243447 A CN201010243447 A CN 201010243447A CN 102345634 A CN102345634 A CN 102345634A
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Abstract
An energy-saving boiler forced and induced draft fan series model comprises a housing, an impeller, an air inlet and a drive set, and is characterized in that the impeller mainly comprises sixteen blades, an impeller cover, an impeller disk and an impeller hub. The sixteen backward plate-like blades are circumferentially and evenly distributed, and are welded between the cambered impeller cover and the flat impeller disk, which are mounted on the impeller hub. The housing is a volute formed by welded plates, the air inlet is of a welded structure, and the profile of the air inlet is shaped like a conical arc which is axially converged. The outlet diameter of the blades is 800mm, the inlet diameter is 519.5mm, the width is 210.6mm, the outlet width is 139.8mm, and the outlet angle of the blades is 51 degrees. The model is widely applicable, the blades of the impeller are backward plate-like blades, so that an electromotor cannot be easily overloaded, the model has the advantages of high efficiency, energy saving, wide efficiency range and low noise, the dynamic pressure difference between the inlet and the outlet is small, and the model number can be reduced. The abrogation of the inlet of the blades is little, so that the service life of the impeller can be prolonged, and the model is convenient to machine.
Description
Technical field
The present invention relates to a kind of blower fan, specifically relate to a kind of 5-55 type boiler drum and draw the 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, like 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 through 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.So advantage of the fan design software development of Shenyang Blower research institute and Tsing-Hua University's fluid internal class, application and experimental study ability; Combination among the strong ones; Set up the project in March, 2005; Blower fan series type spectrum to existing most manufacturer production; In line with plugging a gap, being target with energy-efficient; And four blower fan series models are planned and developed to the principle that replaces broad-spectrum other series product as far as possible.Through the time in 5 years; Tsing-Hua University's fluid the complete machine complex flowfield of multiple design proposal is carried out numerical simulation; Fan performance is estimated and hundreds of time Pneumatic Calculation has been carried out in optimization; The manufacturing of Shenyang Blower research institute more than 30 cover blower fan models; Carry out 100 test of many times researchs, accomplished this project.Four blower fan series models have all reached re-set target.
Summary of the invention
The object of the invention provides boiler and draws the energy-saving fan series model with drum, is one of above-mentioned four blower fans series, and trade name is drawn the energy-saving fan series model for the 5-55 boiler drum.
The technological scheme that adopts is:
Boiler drum draws the energy-saving fan series model, comprises casing, impeller, intake grill and transmission group.
Said impeller is mainly formed to template blade, arc wheel cap, plate shaped wheel disc and wheel hub after 16.Circumferentially be uniformly distributed with to template blade edge after 16, and be welded between arc wheel cap and the plate shaped wheel disc, be assembled with wheel hub.
Said 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.
Said transmission group comprises main shaft, bearing housing etc., is known technology.
Purposes of the present invention:
Blower fan series model of the present invention belongs to intermediate flow, the medium pressure category, and the highest fan efficiency is 87.08%.With the blower fan of this modeling design can be used as steam boiler with forced-and-induced draft fan, smelt smoke evacuation induced draught fan, 35-410 ton/time circulating fluidized bed boiler with forced-and-induced draft fan, primary air fan, overfire air fan, Iron And Steel Plant's smelting dusting apparatus with dedusting fan etc.Also can be used for mine ventilation system and general ventilation system.This model has been filled up non dimensional curve, and pressure coefficient is 0.5 certain section blank, in Fan Selection, shows its advantage that performance is good, efficient is high.This serial blower fan also can be through reducing most of operating point that plane No. replaces 5-47 (II type), 5-48, and can be used to satisfy above purposes, in 5-47 (II type), 5-48 flow system bigger than normal, and energy-efficient.
The invention has the advantages that:
1, of many uses, it is blank to have filled up ventilator series type spectrum.
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.
Illustrate at present:
For example 1: below be three to change in the samples 5-48No12.5C; N=1400r/min; Certain operating point parameter during ρ=0.85kg/m3: flow=67803 (m3/h); Total head=2794Pa; Internal efficiency=75.3%; Internal power=69.2kw.The 5-55 series model has been arranged now, at the optional 5-55No11.7C of certain non dimensional curve section (former blank) here.Table 1 has provided under same rotating speed and the import density, the performance comparison result of 5-55No11.7C and 5-48No12.5C.
Table 1
Can be found out by table 1: under same rotating speed and density, same performance parameter more than satisfying selects for use 5-48 need select No12.5 for use; And select for use 5-55 to select for use No11.7 just passable.Impeller adiabatic efficiency increases by 9.03%, impeller power reduction 7.25%.
For example 2: following is in 5-47 (II) sample of many manufacturer production, No12D; N=1480r/min; Certain operating point parameter during ρ=0.742g/m3: flow=62850 (m3/h); Total head=2638Pa; Impeller adiabatic efficiency=75.4%; Impeller power=61.06kw.The 5-55 series model has been arranged now, at the optional 5-55No11.3D of certain non dimensional curve section (former blank) here.Table 2 has provided under same rotating speed and the import density, the performance comparison result of 5-55No11.3D and 5-47 (II) No12D.
Table 2
Can be found out by table 2: under same rotating speed and density, same performance parameter more than satisfying selects for use 5-47 (II) need select No12D for use; And select for use 5-55 to select for use No11.3D just passable.Impeller adiabatic efficiency increases by 11%, impeller power reduction 8.8%.
This model and 6-35 are same in addition, are through numerical simulation calculation being carried out in impeller interior three-dimensional flow field, optimize the flow passage component size, and determined inlet blade angle meets the actual airflow flow direction, and blade import wearing and tearing are minimum.And 5-48,5-47 (II) etc. are by the binary Design Theory that flows, and facts have proved blade import serious wear, and 5-55 has solved the blade import wear problem that the blower fan of 5-48,5-47 types such as (II) exists, and can prolong the working life of impeller.
In sum, 5-55 compares with similar blower fan has best aeroperformance, and efficient, low noise, zero dimension performance zone of living in and the little advantage of import wearing and tearing with it necessarily have wide application space, and its product has very strong competitive ability.
Description of drawings
Fig. 1 is a kind of example structure schematic representation of the present invention.
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 zero dimensional performance curve figure of the present invention.Wherein Φ is that flow coefficient, Ψ are that coefficient of total pressure, λ are power factor, η r impeller adiabatic efficiency.
Embodiment
Boiler drum draws energy-saving fan series model (№ 8 models), comprises casing 1, impeller 2, intake grill 3 and transmission group 4.
Said impeller is mainly formed to template blade 5, arc wheel cap 6, plate shaped wheel disc 7 and wheel hub 8 after 16.Circumferentially be uniformly distributed with to template blade 5 edges after 16, and be welded between arc wheel cap 6 and the plate shaped wheel disc 7, be assembled with wheel hub 8.
The flow passage component major character:
The inlet diameter of said intake grill 3 is 568mm, and width is 338.6mm.
The width of said casing 1 is 349.5mm, and the casing export center is 655.2mm to casing centre distance, and the casing outlet is 692 * 349.5mm.
The optimal working point zero dimension performance parameter of said correspondence is: flow coefficient 0.1733, pressure coefficient 0.5260, power factor 0.1047, fan efficiency 87.08%.
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 process series product, all within protection.
Claims (4)
1. boiler drum draws energy-saving fan series model (№ 8 models); Comprise casing (1), impeller (2), intake grill (3) and transmission group (4); It is characterized in that said impeller (2) mainly forms to template blade (5), arc wheel cap (6), plate shaped wheel disc (7) and wheel hub (8) after 16; Circumferentially be uniformly distributed with to template blade (5) edge after 16; And be welded between arc wheel cap (6) and the plate shaped wheel disc (7), be assembled with wheel hub (8);
The volute body that said casing (1) is welded for sheet material, intake grill (3) is a welded structure, its molded lines is the awl of convergent vertically arc.
2. boiler drum according to claim 1 draws the energy-saving fan series model, it is characterized in that said impeller (2): the blade exit diameter is 800mm, and inlet diameter is 519.5mm, and width is 210.6mm, and exit width is 139.8mm, and blade outlet angle is 51 °;
The inlet diameter of said intake grill (3) is 568mm, and width is 338.6mm;
Said casing (1) is a volute body, and width is 349.5mm, and casing (1) export center is 655.2mm to casing (1) centre distance, and the casing outlet is 692 * 349.5mm.
3. boiler drum according to claim 2 draws the energy-saving fan series model, and corresponding efficient operating point zero dimension performance parameter is: flow coefficient 0.1733; Pressure coefficient 0.5260; Power factor 0.1047; Fan efficiency 87.08%.
4. boiler drum according to claim 2 draws the energy-saving fan series model, it is characterized in that: the above-mentioned size of the flow passage component of said impeller (2), intake grill (3) and casing (1) is amplified on year-on-year basis or is dwindled and process series product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010243447.3A CN102345634B (en) | 2010-08-03 | 2010-08-03 | Energy-saving boiler forced and induced draft fan series model |
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| CN201010243447.3A CN102345634B (en) | 2010-08-03 | 2010-08-03 | Energy-saving boiler forced and induced draft fan series model |
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| CN102345634B CN102345634B (en) | 2014-04-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345632A (en) * | 2010-08-03 | 2012-02-08 | 沈阳鼓风机研究所(有限公司) | Energy-saving boiler forced and induced draft fan series model |
| CN104373380A (en) * | 2014-11-08 | 2015-02-25 | 江阴市精亚风机有限公司 | Energy-saving draught fan impeller of automatic winder |
| CN104791262A (en) * | 2015-03-28 | 2015-07-22 | 重庆通用工业(集团)有限责任公司 | Mechanical vapor recompression (MVR) energy-saving draught fan series model |
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| EP0741246A1 (en) * | 1995-05-05 | 1996-11-06 | Alcatel SEL Aktiengesellschaft | Radial blower |
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| CN201827144U (en) * | 2010-08-03 | 2011-05-11 | 沈阳鼓风机研究所(有限公司) | Energy-saving boiler drum induced-draft fan series model |
| CN201827142U (en) * | 2010-08-03 | 2011-05-11 | 沈阳鼓风机研究所(有限公司) | Boiler drum lead energy-saving fan series model |
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2010
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0741246A1 (en) * | 1995-05-05 | 1996-11-06 | Alcatel SEL Aktiengesellschaft | Radial blower |
| CN201065854Y (en) * | 2007-07-06 | 2008-05-28 | 江阴市宏达风机有限公司 | Backward high pressure centrifugal aeration machine |
| CN201372944Y (en) * | 2009-01-08 | 2009-12-30 | 鞍山市风机二厂 | Induced draft fan used for circulating fluid bed boiler |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345632A (en) * | 2010-08-03 | 2012-02-08 | 沈阳鼓风机研究所(有限公司) | Energy-saving boiler forced and induced draft fan series model |
| CN102345632B (en) * | 2010-08-03 | 2014-04-02 | 沈阳鼓风机研究所(有限公司) | Energy-saving boiler forced and induced draft fan series model |
| CN104373380A (en) * | 2014-11-08 | 2015-02-25 | 江阴市精亚风机有限公司 | Energy-saving draught fan impeller of automatic winder |
| CN104791262A (en) * | 2015-03-28 | 2015-07-22 | 重庆通用工业(集团)有限责任公司 | Mechanical vapor recompression (MVR) energy-saving draught fan series model |
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| CN102345634B (en) | 2014-04-02 |
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