CN103047177A - Mining combined local fan with tandem cascade - Google Patents
Mining combined local fan with tandem cascade Download PDFInfo
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- CN103047177A CN103047177A CN2012105524540A CN201210552454A CN103047177A CN 103047177 A CN103047177 A CN 103047177A CN 2012105524540 A CN2012105524540 A CN 2012105524540A CN 201210552454 A CN201210552454 A CN 201210552454A CN 103047177 A CN103047177 A CN 103047177A
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- fan
- impeller
- level
- impellers
- tandem cascade
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Abstract
A mining combined local fan with a tandem cascade comprises a collector (1), a pre-silencer (2), fan power, a two-stage main set and a silencing diffuser section (10). A two-stage impeller of a primary fan, a two-stage impeller of a secondary fan and two groups of guide blades are serially connected to form a four-stage series fan. By the aid of the tandem cascade and a combined series structure, airflow separation is suppressed, aerodynamic noise of the fan is reduced, and total pressure of the fan is increased. The fan runs at the rotation speed of a four-pole motor, rotation noise of the fan is effectively reduced, the sound level A of the fan is reduced by about 10dB according to detection, and wind pressure and flow of a two-pole motor in running are achieved. A contra-rotating axial flow integrated structure is reserved, a flow channel of the fan is kept smooth, and the running efficiency of the fan is improved. Motor shells directly contact with airflow in the flow channel, the motors are cooled by the airflow generated by the fan, temperature rise of the motors is reduced, the service lives of the motors are prolonged, and running safety of the fan is ensured.
Description
Technical field
The present invention relates to a kind of booster, particularly a kind of mining combined type tandem cascade booster.
Background technique
At present, common and the most frequently used booster namely is to adopt the sencond stage impeller that revolves structure is realized ventilating, realize certain ventilation by sencond stage impeller, just must reach certain rotating speed could realize, and higher rotating speed can bring higher aerodynamic noise, and to fall low noise effect very limited by changing mean of calculating outside the rotating speed.
Summary of the invention
The purpose of the technology of the present invention provides a kind ofly can effectively fall low noise mining combined type tandem cascade booster.
The technology of the present invention solves the technological scheme that its technical problem adopts: it comprises slip ring 1, premuffler 2, blower fan power, two-stage host groups and noise elimination diffusion barrel 10, it is characterized in that: impeller adopts tandem cascade; 2 groups of impellers of one-level blower fan and 2 groups of impeller serials of secondary blower fan form the level Four combined type fan impeller of connecting.One-level impeller 3, middle stator 4, sencond stage impeller 5, three grades of impellers 6, rear guide vane 9 and level Four impellers 8 are connected successively, stator is fixed in casing, one-level impeller 3 and sencond stage impeller 5 are driven by the one-level fan motor, three grades of impellers 6 and level Four impeller 8 are driven by the secondary fan motor, two motor speeds are identical, opposite direction forms to revolving structure sencond stage impeller 5 and three grades of impellers 6.Middle stator 4 is set between one-level impeller 3 and sencond stage impeller 5, between three grades of impellers 6 and level Four impeller 8, rear guide vane 9 is set.
The invention has the beneficial effects as follows:
1. impeller adopts tandem cascade, the establishment airflow breakaway, thus improve blast, reduce the aerodynamic noise that airflow breakaway is brought.
2. blower fan adopts 4 utmost point motor driving, and rotating speed is 1/2 of 2 utmost point motors that adopt of general axial flow booster, greatly reduces rotational noise.After testing, the ventilator A sound level in conjunction with the noise reduction of tandem cascade reduces approximately 10dB.
3. blower fan adopts 4 grades of impeller combination cascaded structures, improve total pressure of fan, in conjunction with the effect of tandem cascade, so that blower fan when adopting slow-revving 4 utmost point motors operation, still can reach the performance index such as the air quantity, blast of the general axial flow booster that adopts high-revolving 2 utmost point motors.
4. keep the axial flow rotary integral structure, keep the ventilator runner unobstructed, improve fan operation efficient; Motor housing directly contact with air-flow in the runner, and the distinguished and admirable cooling by ventilator produces reduces electric machine temperature rise, prolongation motor working life, assurance ventilator security of operation.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: the 1-slip ring, the 2-premuffler, 3-one-level impeller, stator, 5-sencond stage impeller among the 4-, three grades of impellers of 6-, 7-supports, 8-level Four impeller, 9-rear guide vane, 10-noise elimination diffusion barrel.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further details.
The present invention includes slip ring 1, premuffler 2, blower fan power, two-stage host groups and noise elimination diffusion barrel 10, every grade of host groups comprises both stage impellers, cooperates with stator blade to be composed in series four impeller levels.Wherein impeller adopts tandem cascade.One-level impeller 3, middle stator 4, sencond stage impeller 5, three grades of impellers 6, rear guide vane 9 and level Four impellers 8 are connected successively, stator is fixed in casing, one-level impeller 3 and sencond stage impeller 5 are driven by the one-level fan motor, three grades of impellers 6 and level Four impeller 8 are driven by the secondary fan motor, two motor speeds are identical, opposite direction forms to revolving structure sencond stage impeller 5 and three grades of impellers 6.
Embodiment 1, the present invention includes slip ring 1, premuffler 2, blower fan power, two-stage host groups and noise elimination diffusion barrel 10, and every grade of host groups comprises both stage impellers, cooperates with stator blade to be composed in series four impeller levels.One-level impeller 3, middle stator 4, sencond stage impeller 5, three grades of impellers 6, rear guide vane 9 and level Four impellers 8 are connected successively, stator is fixed in casing, one-level impeller 3 and sencond stage impeller 5 are driven by the one-level fan motor, three grades of impellers 6 and level Four impeller 8 are driven by the secondary fan motor, two motor speeds are identical, opposite direction forms to revolving structure sencond stage impeller 5 and three grades of impellers 6.Impeller adopts tandem cascade, can the establishment airflow breakaway, reduce the aerodynamic noise that airflow breakaway causes, and in conjunction with the fabricated structure of plural serial stage to revolving, can improve total pressure of fan.Blower fan adopts 4 utmost point motor driving, reduces rotational noise.After testing, the ventilator A sound level in conjunction with the noise reduction of tandem cascade reduces approximately 10dB.Reservation keeps the ventilator runner unobstructed to the axial flow rotary integral structure, improves fan operation efficient; Motor housing directly contact with air-flow in the runner, and the distinguished and admirable cooling by ventilator produces reduces electric machine temperature rise, prolongation motor working life, assurance ventilator security of operation.Consult Fig. 1.
Embodiment 2, and the present invention also can be provided with middle stator 4 between one-level impeller 3 and sencond stage impeller 5, be provided with rear guide vane 9 between three grades of impellers 6 and level Four impeller 8.Consult Fig. 1, all the other are with above-mentioned embodiment.
Claims (3)
1. mining combined type tandem cascade booster, it comprises slip ring (1), premuffler (2), blower fan power, two-stage host groups and noise elimination diffusion barrel (10), it is characterized in that: impeller adopts tandem cascade; 2 groups of impellers of one-level blower fan and 2 groups of impeller serials of secondary blower fan form the level Four combined type fan impeller of connecting.
2. described mining combined type tandem cascade booster according to claim 1, it is characterized in that: one-level impeller (3), middle stator (4), sencond stage impeller (5), three grades of impellers (6), rear guide vane (9) and level Four impeller (8) are connected successively, stator is fixed in casing, one-level impeller (3) and sencond stage impeller (5) are driven by the one-level fan motor, three grades of impellers (6) and level Four impeller (8) are driven by the secondary fan motor, two motor speeds are identical, opposite direction forms to revolving structure sencond stage impeller (5) and three grades of impellers (6).
3. described mining combined type tandem cascade booster according to claim 1 is characterized in that: between one-level impeller (3) and sencond stage impeller (5) middle stator (4) is set, between three grades of impellers (6) and level Four impeller (8) rear guide vane (9) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105524540A CN103047177A (en) | 2012-12-19 | 2012-12-19 | Mining combined local fan with tandem cascade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105524540A CN103047177A (en) | 2012-12-19 | 2012-12-19 | Mining combined local fan with tandem cascade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047177A true CN103047177A (en) | 2013-04-17 |
Family
ID=48059959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105524540A Pending CN103047177A (en) | 2012-12-19 | 2012-12-19 | Mining combined local fan with tandem cascade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047177A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206393A (en) * | 2013-05-06 | 2013-07-17 | 淮北兴海工贸有限责任公司 | Mining flame-proof type third-level axial flow disrotatory local fan |
| CN114704487A (en) * | 2022-03-30 | 2022-07-05 | 中煤科工集团重庆研究院有限公司 | Permanent magnetic suspension shaftless low-noise high-efficiency axial flow fan |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009287452A (en) * | 2008-05-29 | 2009-12-10 | Panasonic Corp | Axial flow blower |
| CN201546981U (en) * | 2009-11-05 | 2010-08-11 | 中铁隧道集团有限公司 | Axial flow fan in super long tunnel construction on plateau |
| JP2012052540A (en) * | 2010-08-31 | 2012-03-15 | General Electric Co <Ge> | Airfoil shape for compressor inlet guide vane |
| CN202417969U (en) * | 2011-12-20 | 2012-09-05 | 山西潞安环保能源开发股份有限公司 | Variable-speed double-stage axial-flow local fan |
| CN202991624U (en) * | 2012-12-19 | 2013-06-12 | 平安电气股份有限公司 | Combined serial blade grid local fan for mining |
-
2012
- 2012-12-19 CN CN2012105524540A patent/CN103047177A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009287452A (en) * | 2008-05-29 | 2009-12-10 | Panasonic Corp | Axial flow blower |
| CN201546981U (en) * | 2009-11-05 | 2010-08-11 | 中铁隧道集团有限公司 | Axial flow fan in super long tunnel construction on plateau |
| JP2012052540A (en) * | 2010-08-31 | 2012-03-15 | General Electric Co <Ge> | Airfoil shape for compressor inlet guide vane |
| CN202417969U (en) * | 2011-12-20 | 2012-09-05 | 山西潞安环保能源开发股份有限公司 | Variable-speed double-stage axial-flow local fan |
| CN202991624U (en) * | 2012-12-19 | 2013-06-12 | 平安电气股份有限公司 | Combined serial blade grid local fan for mining |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206393A (en) * | 2013-05-06 | 2013-07-17 | 淮北兴海工贸有限责任公司 | Mining flame-proof type third-level axial flow disrotatory local fan |
| CN103206393B (en) * | 2013-05-06 | 2015-05-06 | 淮北兴海工贸有限责任公司 | Mining flame-proof type third-level axial flow disrotatory local fan |
| CN114704487A (en) * | 2022-03-30 | 2022-07-05 | 中煤科工集团重庆研究院有限公司 | Permanent magnetic suspension shaftless low-noise high-efficiency axial flow fan |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130417 |