CN203702669U - Anti-surge structure for axial flow fan of metro - Google Patents
Anti-surge structure for axial flow fan of metro Download PDFInfo
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- CN203702669U CN203702669U CN201320806425.2U CN201320806425U CN203702669U CN 203702669 U CN203702669 U CN 203702669U CN 201320806425 U CN201320806425 U CN 201320806425U CN 203702669 U CN203702669 U CN 203702669U
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- surge
- axial
- urceolus
- fan
- axial flow
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- 238000005452 bending Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses an anti-surge structure for an axial flow fan of a metro. The anti-surge structure is characterized in that the diameter of an inner barrel is equal to the diameter of the axial flow fan, a shell of the axial flow fan is fixed in the middle of the outer barrel through a connecting plate, the inner barrel is arranged on one end of the outer barrel at an airflow inlet of a one-way fan or on each of two ends of the outer barrel at an airflow inlet and an airflow outlet of a bidirectional fan, a plurality of anti-surge pieces with circular-arc airfoils are uniformly fixed between each inner barrel and the outer barrel according to one bending direction, and the formed stream guidance direction is consistent to the stream guidance direction of blades of the axial flow fan; the two end faces of the outer barrel and the end faces of the anti-surge pieces are respectively fixed on two flange plates. By adopting the axial flow fan provided by the utility model, the occurrence of the surge phenomenon of the fan can be reduced and even avoided under the work condition of piston wind; the influence of the piston wind on the efficiency of the fan is reduced furthest, and the operating efficiency of the axial flow fan is effectively improved by 3%-5%.
Description
Technical field
The utility model relates to a kind of subway axial-flow blower anti-surge structure.
Background technique
Blocking up of traffic above-ground brought inconvenience to people's trip, the measure such as construction that for the transport solution problem of blocking up, China put into effect in one line city restricting the number trip, the car plate number of shaking in succession, strengthen highway, but effect is all not obvious.Can effectively alleviate this problem from the network Construction of western countries' subway line, therefore development subway transportation energetically of each big city of China's present stage, subway all needs sufficient fresh air in the process of tunnel operation and in the process that waits at platform of passenger, so in tunnel, just need ventilation equipment, subway axial-flow blower can perfectly address this problem, once meet accident, fire can also be discharged smog outside tunnel simultaneously, the injures and deaths that reduce to greatest extent personnel, drop to minimum by loss.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, because subway can produce Piston Action Wind in the process of tunnel operation, air current flow direction and the speed of axial-flow blower are changed, namely the operating mode of axial-flow blower changes, the air-flow that fan blade keeps off back all loses due direction with the air-flow entering, 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.
Model utility content
The purpose of this utility model solves the above-mentioned problems in the prior art exactly, and a kind of subway axial-flow blower anti-surge structure is provided, and adopts the axial-flow blower of this structure under the operating mode that has Piston Action Wind, to reduce, even avoids the generation of blower fan surging phenomenon.
For achieving the above object, technical solution of the present utility model 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, there is inner core in an end of urceolus of unidirectional fan airflow inlet or the two end part of the urceolus at two-way blower fan air-flow inlet/outlet place, multiple have the wing anti-surge sheet of circular arc and be evenly fixed between inner core and urceolus according to same bending direction, and the water conservancy diversion direction of its formation and the water conservancy diversion direction of axial-flow fan blade consistent; The end face of the both ends of the surface of urceolus and anti-surge sheet is 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 of inside and outside cylinder is poor is 180-230 mm, and the best is 200mm.
The utility model 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 keeping off is back under the guiding of the wing anti-surge sheet of circular arc, enter in axial-flow blower along the tangent direction of anti-surge sheet with the air-flow entering again, the air-flow namely being kept off back by blade is under the rectified action of anti-surge sheet, no longer there is violent conflict with the air-flow entering, even if axial-flow blower of the present utility model is namely installed under the operating mode that has Piston Action Wind, its phenomenon that surge occurs also reduces, even obtain avoiding, reduce to greatest extent the impact of Piston Action Wind on fan efficiency, can effectively improve the operational efficiency 3%～5% of axial-flow blower, significant in efficient operation to axial-flow blower and energy-saving and emission-reduction.
Brief description of the drawings
Fig. 1 is plan view of the present utility model;
Fig. 2 is the AA sectional view of Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is 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, there is inner core at two end part at the urceolus at air-flow inlet/outlet place, multiple have the wing anti-surge sheet of circular arc and be evenly fixed between inner core and urceolus according to same bending direction, and the water conservancy diversion direction of its formation and the water conservancy diversion direction of axial-flow fan blade consistent.The end face of the both ends of the surface of urceolus and anti-surge sheet is 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 of inside and outside cylinder is poor 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 to greatest extent the impact on fan efficiency simultaneously.
The axial-flow blower of above-described embodiment is unidirectional blower fan if, only has inner core in an end of the urceolus at airflow inlet place and multiplely has a 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 are 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, there is inner core in an end of urceolus of unidirectional fan airflow inlet or the two end part of the urceolus at two-way blower fan air-flow inlet/outlet place, multiple have the wing anti-surge sheet of circular arc and be evenly fixed between inner core and urceolus according to same bending direction, and the water conservancy diversion direction of its formation and the water conservancy diversion direction of axial-flow fan blade consistent; The end face of the both ends of the surface of urceolus and anti-surge sheet is 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 of inside and outside cylinder is poor 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 of inside and outside cylinder is poor is 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806425.2U CN203702669U (en) | 2013-12-10 | 2013-12-10 | Anti-surge structure for axial flow fan of metro |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806425.2U CN203702669U (en) | 2013-12-10 | 2013-12-10 | Anti-surge structure for axial flow fan of metro |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702669U true CN203702669U (en) | 2014-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320806425.2U Expired - Lifetime CN203702669U (en) | 2013-12-10 | 2013-12-10 | Anti-surge structure for axial flow fan of metro |
Country Status (1)
| Country | Link |
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| CN (1) | CN203702669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696289A (en) * | 2013-12-10 | 2015-06-10 | 惠阳航空螺旋桨有限责任公司 | Surging prevention structure of subway axial flow fan |
| 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 |
-
2013
- 2013-12-10 CN CN201320806425.2U patent/CN203702669U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696289A (en) * | 2013-12-10 | 2015-06-10 | 惠阳航空螺旋桨有限责任公司 | Surging prevention structure of subway axial flow fan |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |