CN104696289A - Surging prevention structure of subway axial flow fan - Google Patents
Surging prevention structure of subway axial flow fan Download PDFInfo
- Publication number
- CN104696289A CN104696289A CN201310663849.2A CN201310663849A CN104696289A CN 104696289 A CN104696289 A CN 104696289A CN 201310663849 A CN201310663849 A CN 201310663849A CN 104696289 A CN104696289 A CN 104696289A
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- China
- Prior art keywords
- axial
- surge
- urceolus
- fan
- axial flow
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a surging prevention structure of a subway axial flow fan. The diameter of an inner cylinder is the same as that of the axial flow fan; a housing of the axial flow fan is fixed in the middle of an outer cylinder via a connecting plate; the inner cylinder is arranged at one end part of the outer cylinder at a unidirectional fan air flow inlet or the two end parts of the outer cylinder at a bidirectional fan air flow inlet/outlet; a plurality of surging prevention sheets with arc wings are uniformly fixed between the inner cylinder and the outer cylinder in a bending direction; a flow guide direction formed by the surging prevention sheets is the same as that of blades of the axial flow fan; and the two end faces of the outer cylinder and the end faces of the surging prevention sheets are fixed on two flange plates respectively. With the adoption of the structure, surging of the axial flow fan can be reduced and even avoided under a working condition that piston air exists, the influence of the piston air on fan efficiency is reduced to the greatest extent, and the operating efficiency of the axial flow fan can be effectively improved by 3-5%.
Description
Technical field
The present invention relates to a kind of subway axial-flow blower anti-surge structure.
Background technique
Blocking up of traffic above-ground brings inconvenience to the trip of people, and in order to transport solution congestion problems, China one line city has in succession been put into effect restricting the number trip, the car plate number of shaking, strengthened the measure such as construction of highway, but effect is all not obvious.This problem can be effectively alleviated from the network Construction of western countries' subway line, therefore China's present stage each big city development subway transportation energetically, sufficient fresh air is all needed in the process that subway runs in tunnel and in the process that waits at platform of passenger, so just ventilation equipment are needed in tunnel, subway axial-flow blower can perfectly solve this problem, simultaneously once smog can also be discharged outside tunnel by the fire that meets accident, reduce the injures and deaths of personnel to greatest extent, loss is dropped to minimum.The blade of subway axial-flow blower plays air inducing effect, due to the design of its shape, it is working stability under stable air-flow, Piston Action Wind can be produced due in the process that subway runs in tunnel, the air current flow direction of axial-flow blower and speed are changed, namely the operating mode of axial-flow blower changes, the air-flow that fan blade keeps off back and the air-flow entered all lose due direction, there is sharp impacts, cause axial-flow blower generation surging phenomenon, once axial-flow blower generation surging phenomenon, it will produce high vibration, severe patient can cause the damage of axial-flow blower, bring huge infringement.
Summary of the invention
Object of the present invention solves the above-mentioned problems in the prior art exactly, provides a kind of subway axial-flow blower anti-surge structure, adopts the axial-flow blower of this structure under the operating mode having Piston Action Wind, can reduce, even avoid the generation of blower fan surging phenomenon.
For achieving the above object, technical solution of the present invention is: a kind of subway axial-flow blower anti-surge structure, and it comprises inner core, urceolus, multiplely has the wing anti-surge sheet of circular arc and two flange plate; Inner diameter of steel flue is identical with the diameter of axial-flow blower, the shell of axial-flow blower is fixed on the neutral position of urceolus by connecting plate, inner core is had at the two end part of the urceolus at an end of the urceolus of unidirectional fan airflow inlet or two-way blower fan air-flow inlet/outlet place, multiple anti-surge sheet having circular arc wing is evenly fixed between inner core and urceolus according to same bending direction, and its water conservancy diversion direction formed is consistent with the water conservancy diversion direction of axial-flow fan blade; The both ends of the surface of urceolus and the end face of anti-surge sheet are separately fixed on two flange plate.
The height difference of anti-surge sheet low and high described above is 30-50 mm, and the best is 45mm; Spacing between adjacent anti-surge sheet is 140-170 mm, and the best is 160mm; The diameter difference of inside and outside cylinder is 180-230 mm, and the best is 200mm.
The present invention is placed in fan airflow inlet, and unidirectional blower fan is arranged on an end of the urceolus at airflow inlet place, and two-way blower fan is arranged on the two end part of the urceolus at air-flow inlet/outlet place.Enter the air-flow in axial-flow blower, a part is kept off back by blade, the air-flow kept off back is under the guiding of the wing anti-surge sheet of circular arc, enter in axial-flow blower with the air-flow entered along the tangent direction of anti-surge sheet again, the air-flow namely kept off back by blade is under the rectified action of anti-surge sheet, violent conflict is no longer there is with the air-flow entered, even if namely install axial-flow blower of the present invention under the operating mode having Piston Action Wind, its phenomenon that surge occurs also reduces, even obtain and avoid, reduce the impact of Piston Action Wind on fan efficiency to greatest extent, effectively can improve the operational efficiency 3% ~ 5% of axial-flow blower, to significant on the Effec-tive Function of axial-flow blower and energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention;
Fig. 2 is the AA sectional view of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As depicted in figs. 1 and 2, the present embodiment is two-way blower fan, and it comprises inner core, urceolus, multiplely has the wing anti-surge sheet of circular arc and two flange plate.Inner diameter of steel flue is identical with the diameter of axial-flow blower, the shell of axial-flow blower is fixed on the neutral position of urceolus by connecting plate, inner core is had at the two end part of the urceolus at air-flow inlet/outlet place, multiple anti-surge sheet having circular arc wing is evenly fixed between inner core and urceolus according to same bending direction, and its water conservancy diversion direction formed is consistent with the water conservancy diversion direction of axial-flow fan blade.The both ends of the surface of urceolus and the end face of anti-surge sheet are separately fixed on two flange plate.The height difference of anti-surge sheet low and high is 30-50 mm, and the best is 45mm, and the spacing between adjacent anti-surge sheet is 140-170 mm, and the best is 160mm; The diameter difference of inside and outside cylinder is 180-230 mm, and the best is 200mm.Every optimum value of anti-surge sheet makes it not only be easy to processing, also reduces the impact on fan efficiency to greatest extent simultaneously.
If the axial-flow blower of above-described embodiment is unidirectional blower fan, then there is inner core an end of the urceolus only at airflow inlet place and multiplely has the wing anti-surge sheet of circular arc.
Above-described embodiment is only preferred and exemplary, and those skilled in the art can do equivalent technologies according to the spirit of this patent and improve, and these all covered by the protection domain of this patent.
Claims (3)
1. a subway axial-flow blower anti-surge structure, is characterized in that: it comprises inner core, urceolus, multiplely has the wing anti-surge sheet of circular arc and two flange plate; Inner diameter of steel flue is identical with the diameter of axial-flow blower, the shell of axial-flow blower is fixed on the neutral position of urceolus by connecting plate, inner core is had at the two end part of the urceolus at an end of the urceolus of unidirectional fan airflow inlet or two-way blower fan air-flow inlet/outlet place, multiple anti-surge sheet having circular arc wing is evenly fixed between inner core and urceolus according to same bending direction, and its water conservancy diversion direction formed is consistent with the water conservancy diversion direction of axial-flow fan blade; The both ends of the surface of urceolus and the end face of anti-surge sheet are separately fixed on two flange plate.
2. subway axial-flow blower anti-surge structure according to claim 1, is characterized in that: the height difference of described anti-surge sheet low and high is 30-50 mm; Spacing between adjacent anti-surge sheet is 140-170 mm; The diameter difference of inside and outside cylinder is 180-230 mm.
3. subway axial-flow blower anti-surge structure according to claim 2, is characterized in that: the height difference of described anti-surge sheet low and high is 45mm; Spacing between adjacent anti-surge sheet is 160mm; The diameter difference of inside and outside cylinder is 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663849.2A CN104696289A (en) | 2013-12-10 | 2013-12-10 | Surging prevention structure of subway axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310663849.2A CN104696289A (en) | 2013-12-10 | 2013-12-10 | Surging prevention structure of subway axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104696289A true CN104696289A (en) | 2015-06-10 |
Family
ID=53343729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310663849.2A Pending CN104696289A (en) | 2013-12-10 | 2013-12-10 | Surging prevention structure of subway axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104696289A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425889A (en) * | 2018-04-09 | 2018-08-21 | 浙江理工大学上虞工业技术研究院有限公司 | The two level axial flow blower and its anti-asthma method of slight of efficient anti-surging |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2427661Y (en) * | 2000-06-15 | 2001-04-25 | 浙江上风实业股份有限公司 | Anti-surge device of axial flow fan |
| CN201050510Y (en) * | 2007-06-08 | 2008-04-23 | 浙江金盾风机风冷设备有限公司 | Axial flow fan anti-surge ring for subway |
| CN201386705Y (en) * | 2009-04-03 | 2010-01-20 | 浙江双阳风机有限公司 | Anti-surge ring of axial flow fan |
| CN201818558U (en) * | 2010-08-12 | 2011-05-04 | 浙江浩龙风机有限公司 | Anti-surge subway blower fan |
| CN203702669U (en) * | 2013-12-10 | 2014-07-09 | 惠阳航空螺旋桨有限责任公司 | Anti-surge structure for axial flow fan of metro |
-
2013
- 2013-12-10 CN CN201310663849.2A patent/CN104696289A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2427661Y (en) * | 2000-06-15 | 2001-04-25 | 浙江上风实业股份有限公司 | Anti-surge device of axial flow fan |
| CN201050510Y (en) * | 2007-06-08 | 2008-04-23 | 浙江金盾风机风冷设备有限公司 | Axial flow fan anti-surge ring for subway |
| CN201386705Y (en) * | 2009-04-03 | 2010-01-20 | 浙江双阳风机有限公司 | Anti-surge ring of axial flow fan |
| CN201818558U (en) * | 2010-08-12 | 2011-05-04 | 浙江浩龙风机有限公司 | Anti-surge subway blower fan |
| CN203702669U (en) * | 2013-12-10 | 2014-07-09 | 惠阳航空螺旋桨有限责任公司 | Anti-surge structure for axial flow fan of metro |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425889A (en) * | 2018-04-09 | 2018-08-21 | 浙江理工大学上虞工业技术研究院有限公司 | The two level axial flow blower and its anti-asthma method of slight of efficient anti-surging |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |
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| WD01 | Invention patent application deemed withdrawn after publication |