CN201513380U - Impeller of centrifugal fan for monitoring nuclear island atmosphere in nuclear power plant - Google Patents
Impeller of centrifugal fan for monitoring nuclear island atmosphere in nuclear power plant Download PDFInfo
- Publication number
- CN201513380U CN201513380U CN2009201988732U CN200920198873U CN201513380U CN 201513380 U CN201513380 U CN 201513380U CN 2009201988732 U CN2009201988732 U CN 2009201988732U CN 200920198873 U CN200920198873 U CN 200920198873U CN 201513380 U CN201513380 U CN 201513380U
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- impeller
- inner ring
- wheel disc
- periphery
- power plant
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Abstract
The utility model discloses an impeller of a centrifugal fan for monitoring nuclear island atmosphere in a nuclear power plant, which comprises an impeller disk, blades, an impeller inner ring and an impeller cover, wherein the blades are respectively in a circular arc shape and are vertically fixed between the impeller disk and the impeller cover; the periphery intersection of the blades and the impeller disk is a periphery fixed point, and an included angle alpha is formed between the tangent of the blades on the periphery fixed point and the tangent of the periphery of the impeller disk; the fixed position of the blades and the impeller inner ring is an inner ring fixed point, and an included angle beta is formed between the tangent of the blades on the inner ring fixed point and the tangent of the impeller inner ring; an included angle gamma is formed among the periphery fixed point, the inner ring fixed point and the center of the impeller disk, wherein the alpha is 25 to 32 degrees, the beta is 33 to 35 degrees, and the gamma is 85 to 95 degrees. An outward impeller disk flange is arranged at the periphery of the impeller disk; and an outward impeller cover flange is arranged on the peripheral surface of the impeller cover. The impeller of the centrifugal fan for monitoring the nuclear island atmosphere in the nuclear power plant, which is provided by the utility model, can be used for meeting the technical requirements of the centrifugal fan for monitoring the nuclear island atmosphere in the nuclear power plant.
Description
Technical field
The utility model relates to a kind of impeller of centrifugal blower, particularly relates to the impeller of a kind of nuclear power plant nuclear island atmospheric monitoring centrifugal blower.
Background technique
Existing nuclear power plant nuclear island zone for the radioactive level that reduces fission inert gas in the containment and reach limit value, guarantees that staff's safety carries out containment; Simultaneously, for keeping negative pressure small in the containment, leak outside to avoid the air in the containment; And to air in the containment take a sample, to purposes such as air in the containment circulate, need to bleed to containment with ventilation equipment.What adopt usually now is that centrifugal blower is bled to containment, and the centrifugal blower of employing mainly comprises spiral case, impeller and anti-explosion motor, and impeller is that direct connection is connected with anti-explosion motor.Because nuclear power plant's nuclear island atmospheric monitoring centrifugal blower need satisfy high blast about 5500 handkerchiefs and starting time less than technical requirements such as 3 seconds, existing common centrifugal blower fan blade wheel is for satisfying the technological requirement of welding, the steel plate of selecting is thicker, cause wheel rotation inertia big, can't satisfy starting time less than 3 seconds requirement, for satisfying above-mentioned requirements, adopt the way that strengthens the centrifugal blower plane No. and strengthen anti-explosion motor power, cause waste because of the increasing of equipment investment.
The model utility content
The utility model aims to provide and a kind ofly can effectively satisfy under nuclear power plant's nuclear island atmospheric monitoring centrifugal blower technical requirements prerequisite, adopts the impeller of nuclear power plant's nuclear island atmospheric monitoring centrifugal blower of littler centrifugal blower plane No. and power of motor.
For achieving the above object, the technical solution adopted in the utility model is: the impeller of a kind of nuclear power plant nuclear island atmospheric monitoring centrifugal blower, comprise wheel disc, blade, impeller inner ring and wheel cap, the center of described wheel disc is provided with axis hole, it on the outer circumferential face of described wheel disc the wheel disc periphery, described impeller inner ring is concentric with wheel disc, described impeller inner ring is vertically fixed on the wheel disc, described blade is a circular arc, described blade is vertically fixed between wheel disc and the wheel cap, one end of described blade is fixed on the impeller inner ring, the other end of described blade is equal with the wheel disc periphery, described blade and wheel disc periphery intersection are the periphery immovable point, the angle of the tangent line of described periphery immovable point upper blade and the tangent line of wheel disc periphery is α, the bearing of described blade and impeller inner ring is the inner ring immovable point, the angle of the tangent line of described inner ring immovable point upper blade and the tangent line of impeller inner ring is β, described periphery immovable point, the inner ring immovable point is angle γ with the angle of 3 formations of wheel disk center, the angle of α is the 25-32 degree, the angle of β is the 33-35 degree, and the angle of γ is the 85-95 degree.
Described wheel disc periphery is provided with outside wheel disc flange.
The height of described wheel disc flange is the 4-8 millimeter.
The outer circumferential face of described wheel cap is provided with outside wheel cap flange.
The height of described wheel cap flange is the 4-8 millimeter.
The circular arc of described blade is the parabola circular arc.
Adopted the impeller of nuclear power plant of the present utility model nuclear island atmospheric monitoring centrifugal blower, because having adopted the angle of the tangent line of the tangent line of periphery immovable point upper blade and wheel disc periphery is α, the angle of the tangent line of inner ring immovable point upper blade and the tangent line of impeller inner ring is β, the periphery immovable point, the inner ring immovable point is angle γ with the angle of 3 formations of wheel disk center, make the blast of centrifugal blower reach nuclear power plant's nuclear island atmospheric monitoring centrifugal blower and need satisfy requirement about 5500 handkerchiefs, simultaneously, the outer circumferential face of wheel disc periphery and wheel cap is provided with outside flange, under the prerequisite that guarantees the impeller bulk strength, can reduce the thickness of wheel disc and wheel cap, make the weight saving of impeller, starting time of centrifugal blower is shortened reach nuclear power plant's nuclear island atmospheric monitoring centrifugal blower starting time less than 3 seconds requirement.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a cross-sectional view of the present utility model.
Among the figure: the 1-wheel disc, the 2-blade, 3-wheel disc periphery, 4-impeller inner ring, 5-periphery immovable point, 6-inner ring immovable point, 7-takes turns disk center, 8-wheel cap, 9-wheel disc flange, 10-wheel cap flange, 11-axle sleeve.
Embodiment
As depicted in figs. 1 and 2, the utility model discloses the impeller of a kind of nuclear power plant nuclear island atmospheric monitoring centrifugal blower, comprise wheel disc 1, blade 2, impeller inner ring 4 and wheel cap 8, the center of described wheel disc 1 is provided with axis hole 3, it on the outer circumferential face of described wheel disc 1 wheel disc periphery 3, described impeller inner ring 4 is concentric with wheel disc 1, described impeller inner ring 4 is vertically fixed on the wheel disc 1, described blade 2 is a circular arc, described blade 2 is vertically fixed between wheel disc 1 and the wheel cap 8, one end of described blade 2 is fixed on the impeller inner ring 4, the other end of described blade 2 is equal with wheel disc periphery 3, described blade 2 is a periphery immovable point 5 with wheel disc periphery 3 intersections, the angle of the tangent line of described periphery immovable point 5 upper blades 2 and the tangent line of wheel disc periphery 3 is α, described blade 2 is an inner ring immovable point 6 with the bearing of impeller inner ring 4, the angle of the tangent line of described inner ring immovable point 6 upper blades 2 and the tangent line of impeller inner ring 4 is β, described periphery immovable point 5, inner ring immovable point 6 is angle γ with the angle of 3 formations of wheel disk center 7, the angle of α is the 25-32 degree, as adopting 25 degree or 32 degree or 27 degree, the angle of β is the 33-35 degree, as adopting 33 degree or 35 degree or 34 degree, the angle of γ is the 85-95 degree, as adopting 85 degree or 95 degree or 90 degree.The angle of α, β and γ can be optimized selection according to the actual conditions of centrifugal blower.
The material of described wheel disc 1, blade 2, impeller inner ring 4 and wheel cap 8 is a stainless steel, usually adopt 316L type stainless steel by mould compression moulding, described blade 2 welds with the fixedly employing of wheel disc 1 and wheel cap 8, described impeller inner ring 4 welds with the fixedly employing of wheel disc 1 and wheel cap 8, during assembling, earlier blade 2 is placed between wheel disc 1 and the wheel cap 8 and positions spot welding, again full weld is carried out in the blade 2 and the joint of wheel disc 1 and wheel cap 8 after finishing.
The processing that behind each parts welding fabrication, also should eliminate stress of the impeller of nuclear power plant of the present utility model nuclear island atmospheric monitoring centrifugal blower.
Described wheel disc periphery 3 is provided with export-oriented wheel disc flange 9.The height of described wheel disc flange 9 is the 4-8 millimeter.The height of wheel disc flange 9 can adopt 4 millimeters or 8 millimeters or 6 millimeters, and concrete height is selected and can be optimized selection according to the actual conditions of centrifugal blower.
The outer circumferential face of described wheel cap 4 is provided with export-oriented wheel cap flange 10.The height of described wheel cap flange 9 is the 4-8 millimeter.The height of wheel cap flange 10 can adopt 4 millimeters or 8 millimeters or 6 millimeters, and concrete height is selected and can be optimized selection according to the actual conditions of centrifugal blower.
The circular arc of described blade 2 is the parabola circular arc.Under the prerequisite that guarantees the centrifugal blower performance, can certainly adopt other form circular arc.
Claims (6)
1. the impeller of nuclear power plant's nuclear island atmospheric monitoring centrifugal blower, comprise wheel disc (1), blade (2), impeller inner ring (4) and wheel cap (8), the center of described wheel disc (1) is provided with axis hole (3), on the outer circumferential face of described wheel disc (1) wheel disc periphery (3), described impeller inner ring (4) is concentric with wheel disc (1), described impeller inner ring (4) is vertically fixed on the wheel disc (1), described blade (2) is a circular arc, described blade (2) is vertically fixed between wheel disc (1) and the wheel cap (8), one end of described blade (2) is fixed on the impeller inner ring (4), the other end of described blade (2) is equal with wheel disc periphery (3), described blade (2) is periphery immovable point (5) with wheel disc periphery (3) intersection, the angle of the tangent line of the tangent line of described periphery immovable point (5) upper blade (2) and wheel disc periphery (3) is α, described blade (2) is inner ring immovable point (6) with the bearing of impeller inner ring (4), the angle of the tangent line of the tangent line of described inner ring immovable point (6) upper blade (2) and impeller inner ring (4) is β, described periphery immovable point (5), inner ring immovable point (6) is angle γ with the angle of 3 formations of wheel disk center (7), the angle that it is characterized in that α is the 25-32 degree, the angle of β is the 33-35 degree, and the angle of γ is the 85-95 degree.
2. the impeller of nuclear power plant according to claim 1 nuclear island atmospheric monitoring centrifugal blower is characterized in that described wheel disc periphery (3) is provided with export-oriented wheel disc flange (9).
3. the impeller of nuclear power plant according to claim 2 nuclear island atmospheric monitoring centrifugal blower, the height that it is characterized in that described wheel disc flange (9) is the 4-8 millimeter.
4. the impeller of nuclear power plant according to claim 1 nuclear island atmospheric monitoring centrifugal blower is characterized in that the outer circumferential face of described wheel cap (4) is provided with export-oriented wheel cap flange (10).
5. the impeller of nuclear power plant according to claim 4 nuclear island atmospheric monitoring centrifugal blower, the height that it is characterized in that described wheel cap flange (9) is the 4-8 millimeter.
6. the impeller of nuclear power plant according to claim 1 nuclear island atmospheric monitoring centrifugal blower, the circular arc that it is characterized in that described blade (2) is the parabola circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201988732U CN201513380U (en) | 2009-10-19 | 2009-10-19 | Impeller of centrifugal fan for monitoring nuclear island atmosphere in nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201988732U CN201513380U (en) | 2009-10-19 | 2009-10-19 | Impeller of centrifugal fan for monitoring nuclear island atmosphere in nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201513380U true CN201513380U (en) | 2010-06-23 |
Family
ID=42484788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201988732U Expired - Lifetime CN201513380U (en) | 2009-10-19 | 2009-10-19 | Impeller of centrifugal fan for monitoring nuclear island atmosphere in nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201513380U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400952A (en) * | 2010-09-15 | 2012-04-04 | 徐跃 | Centrifugal fan impeller with windproof ring |
| CN103573697A (en) * | 2012-07-18 | 2014-02-12 | 珠海格力电器股份有限公司 | Centrifugal fan blade |
| EP3181911A1 (en) * | 2015-12-17 | 2017-06-21 | ebm-papst Mulfingen GmbH & Co. KG | Kantenberandung eines rotationselements und gebläserad |
| CN107620719A (en) * | 2017-11-14 | 2018-01-23 | 浙江金盾风机股份有限公司 | Atmospheric monitoring system ventilation equipment in a kind of containment |
| CN109707641A (en) * | 2019-03-12 | 2019-05-03 | 彰武永红机械制造有限公司 | A kind of centrifugal blower rotary air centrifugal force generating device |
| CN109763987A (en) * | 2019-03-12 | 2019-05-17 | 彰武永红机械制造有限公司 | A kind of centrifugal blower |
| CN110319054A (en) * | 2019-05-30 | 2019-10-11 | 宁波方太厨具有限公司 | A kind of impeller for forward centrifugal blower |
-
2009
- 2009-10-19 CN CN2009201988732U patent/CN201513380U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400952A (en) * | 2010-09-15 | 2012-04-04 | 徐跃 | Centrifugal fan impeller with windproof ring |
| CN103573697A (en) * | 2012-07-18 | 2014-02-12 | 珠海格力电器股份有限公司 | Centrifugal fan blade |
| EP3181911A1 (en) * | 2015-12-17 | 2017-06-21 | ebm-papst Mulfingen GmbH & Co. KG | Kantenberandung eines rotationselements und gebläserad |
| CN107620719A (en) * | 2017-11-14 | 2018-01-23 | 浙江金盾风机股份有限公司 | Atmospheric monitoring system ventilation equipment in a kind of containment |
| CN109707641A (en) * | 2019-03-12 | 2019-05-03 | 彰武永红机械制造有限公司 | A kind of centrifugal blower rotary air centrifugal force generating device |
| CN109763987A (en) * | 2019-03-12 | 2019-05-17 | 彰武永红机械制造有限公司 | A kind of centrifugal blower |
| CN110319054A (en) * | 2019-05-30 | 2019-10-11 | 宁波方太厨具有限公司 | A kind of impeller for forward centrifugal blower |
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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: 20100623 |