CN205190329U - Antidetonation mechanical draft cooling tower fan - Google Patents
Antidetonation mechanical draft cooling tower fan Download PDFInfo
- Publication number
- CN205190329U CN205190329U CN201520970555.9U CN201520970555U CN205190329U CN 205190329 U CN205190329 U CN 205190329U CN 201520970555 U CN201520970555 U CN 201520970555U CN 205190329 U CN205190329 U CN 205190329U
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- blade
- angle
- wheel hub
- fan
- cooling tower
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- Expired - Fee Related
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Abstract
The utility model provides an antidetonation mechanical draft cooling tower fan, includes a dryer, a motor and an impeller, the impeller includes a wheel hub who links with the motor output shaft and a plurality of blade of being connected along wheel hub periphery evenly distributed, wheel hub 4's diameter is the 25% -30% of dryer internal diameter, it moves about freely and quickly crossing strengthening rib to be equipped with a plurality of on the outer peripheral face of dryer, fore -and -aft strengthening rib is connected with fan base, the blade has a conical blade root, blade root windward side one end has angle a with the axial of blade, blade root lee side one end has angle b, angle a>with the axial of blade, angle b. Adopted the utility model discloses an antidetonation mechanical draft cooling tower fan compares through adopting less wheel hub, has improved the efficiency rank of fan greatly, establish the strengthening rib through adding, improve the bulk strength of fan, reach the antidetonation requirement of nuclear power level, through asymmetrical toper blade root design, improve the intensity of blade, reduce the noise of fan.
Description
Technical field
The utility model relates to a kind of ventilator, relates to a kind of mechanical-draft cooling tower blower fan with certain function of seismic resistance for nuclear power plant specifically.
Background technique
In nuclear power plant, every platform unit need be equipped with one group of mechanical-draft cooling tower usually, due to the special shockproof requirements of nuclear power generating sets, the same requirement cooling tower supporting with it has certain shockproof requirements, existing conventional machinery ventilation cooling tower blower fan is the shockproof requirements reaching nuclear-grade, by the mode thickening steel plate thickness, blower fan can only be reinforced, the Energy Efficiency Ratio of blower fan can be caused like this to reduce, more powerful motor is needed to drive, the overall weight of blower fan also increases greatly, both add cost of material, also cause transport difficult.
Model utility content
For overcoming above-mentioned defect, the utility model aims to provide one and has lightweight, and efficiency grade is high, can reach again the mechanical-draft cooling tower blower fan of nuclear-grade shockproof requirements completely simultaneously.
For achieving the above object, the technical solution adopted in the utility model is: a kind of antidetonation mechanical-draft cooling tower blower fan, comprise an air duct, a motor and an impeller, described impeller comprises one with the joining wheel hub of motor output shaft be uniformly distributed several blades be connected along circumference of hub face, and the diameter of described wheel hub 4 is the 25%-30% of air duct internal diameter; The outer circumferential face of described air duct is provided with some the stiffening ribs intersected in length and breadth, and described longitudinal stiffening rib is connected with base plate; Described blade has the blade root of a taper, and the axis of described one end, blade root windward side and blade has angle a; The axis of described blade root lee face one end and blade has angle b, angle a> angle b.
Angle a=45 ± 2 degree, angle b=30 ± 2 degree.
Have employed antidetonation mechanical-draft cooling tower blower fan of the present utility model, by adopting less hub ratio, substantially increasing the efficiency rank of blower fan; By adding stiffening rib, improving the bulk strength of blower fan, reaching the shockproof requirements of nuclear-grade; By asymmetric taper blade root design, improve the intensity of blade, reduce the noise of blower fan.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the left TV structure schematic diagram of Fig. 1;
Fig. 3 is blade structure schematic diagram of the present utility model.
In figure: 1-air duct, 2-motor, 3-impeller, 4-wheel hub, 5-blade, 6-stiffening rib, 7-blade root.
Embodiment
As depicted in figs. 1 and 2, a kind of antidetonation mechanical-draft cooling tower blower fan, comprise an air duct 1, motor 2 and an impeller 3, described impeller 3 comprises one with the joining wheel hub 4 of motor 2 output shaft be uniformly distributed several blades 5 be connected along wheel hub 4 circumferential surface, in sum, basically identical with the structural type of existing subway axial-flow blower.
The innovative point of antidetonation mechanical-draft cooling tower blower fan of the present utility model is mainly that the diameter of described wheel hub 4 is the 25%-30% of air duct 1 internal diameter, meanwhile, blade 5 adopts lighter epoxy glass laminate to make, the stainless steel that wheel hub 4 adopts intensity higher is made, there is good antiseptic property, do not corrode by nuclear power station ocean climate.Like this, the blower fan of same plane No. has larger airflow pressure, and in reality test, efficiency grade can reach more than 3 grades.
As shown in Figure 2, the outer circumferential face of described air duct 1 is provided with some the stiffening ribs 6 intersected in length and breadth, and described longitudinal stiffening rib 6 is connected with base plate; By stiffening rib 6, the rigidity of air duct 1 can be improved, stiffening rib 6 is connected with base plate meanwhile, improve the bulk strength of blower fan, under the prerequisite increasing a small amount of material, blower fan can be made to meet the shockproof requirements of nuclear-grade completely.
As shown in Figure 3, different with the blade of conventional chilling tower blower fan, the blade 5 of antidetonation mechanical-draft cooling tower blower fan described in the utility model has the blade root 7 of a taper, according to practical measurement, the blade 5 of this form has higher intensity, and greatly can reduce the noise of blower fan, in actual applications, the axis of described one end, blade root 7 windward side and blade 5 has angle a; The axis of described blade root 7 lee face one end and blade 5 has angle b, and because blade 5 is in the process of rotating, the power that windward side and lee face are subject to is different, so angle a> angle b.Like this, blade 5 is made more to balance in the process of rotating.
Usually, in practical operation, angle a is set to 45 ± 2 degree, and angle b is set to 30 ± 2 degree.
Claims (2)
1. an antidetonation mechanical-draft cooling tower blower fan, comprise an air duct (1), a motor (2) and an impeller (3), described impeller (3) comprises one with the joining wheel hub of motor (2) output shaft (4) be uniformly distributed several blades (5) be connected along wheel hub (4) circumferential surface, it is characterized in that the diameter of described wheel hub (4) is the 25%-30% of air duct (1) internal diameter; The outer circumferential face of described air duct (1) is provided with some the stiffening ribs (6) intersected in length and breadth, and described longitudinal stiffening rib (6) is connected with base plate; Described blade (5) has the blade root (7) of a taper, and the axis of described blade root (7) one end, windward side and blade (5) has angle a; The axis of described blade root (7) lee face one end and blade (5) has angle b, angle a> angle b.
2. antidetonation mechanical-draft cooling tower blower fan according to claim 1, is characterized in that angle a=45 ± 2 degree, angle b=30 ± 2 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970555.9U CN205190329U (en) | 2015-11-30 | 2015-11-30 | Antidetonation mechanical draft cooling tower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970555.9U CN205190329U (en) | 2015-11-30 | 2015-11-30 | Antidetonation mechanical draft cooling tower fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205190329U true CN205190329U (en) | 2016-04-27 |
Family
ID=55783325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520970555.9U Expired - Fee Related CN205190329U (en) | 2015-11-30 | 2015-11-30 | Antidetonation mechanical draft cooling tower fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205190329U (en) |
-
2015
- 2015-11-30 CN CN201520970555.9U patent/CN205190329U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20161130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |