CN203627305U - Impeller for reactor top type fan - Google Patents
Impeller for reactor top type fan Download PDFInfo
- Publication number
- CN203627305U CN203627305U CN201320696569.7U CN201320696569U CN203627305U CN 203627305 U CN203627305 U CN 203627305U CN 201320696569 U CN201320696569 U CN 201320696569U CN 203627305 U CN203627305 U CN 203627305U
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- Prior art keywords
- impeller
- blade
- cylindrical shell
- barrel
- tapered sleeve
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- 238000009434 installation Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses an impeller for a reactor top type fan and belongs to the technical field of impellers of fans of ventilation equipment. The impeller comprises blades installed on a hub, wherein the hub consists of a shaft sleeve, a wheel disc, a barrel and multiple reinforcing ribs, the wheel disc and the reinforcing ribs are fixedly installed between the shaft sleeve and the barrel, a plurality of through holes are evenly formed in the wall of the barrel circumferentially, each through hole consists of an installation hole located on the outer side of the barrel and a conical hole located on the inner side of the barrel, lower ends of the blades are installed inside the installation holes, conical sleeves provided with outer hexagon bolts are installed inside the conical holes in a matched manner, and the blades are fixedly connected with the conical sleeves through the outer hexagon bolts. According to the impeller, defects that half-type hub impellers in the prior art are high in cost, not high in material strength and poor in structural performance are overcome.
Description
Technical field
The utility model relates to a kind of high pressure axial flow fan vane wheel, be applied on all kinds of high pressure axial-flow blowers, more specifically be a kind of impeller being applied on the control rod drive mechanisms (CRD) cooling blower of nuclear reactor top, belong to the technical field of ventilation equipment draught fan impeller.
Background technique
Existing cooling blower is mostly axial-flow blower, and its performance is often closely related with the performance of impeller.At present, apply to that its structure of impeller on axial-flow blower is generally Hafu-type wheel hub and the bolted mode of blade forms.Because of the restriction of nuclear power generating equipment to aluminium material, and stainless steel Hafu-type wheel hub not only needs expensive foundry equipment and difficulty of processing is large, cost of production is high precision casting mould to complete, casting conforming product rate is out not high, and its mechanical property is also poor, does not often reach designing requirement.And needing on the high pressure axial-flow blower that delivery pressure is larger, its draught fan impeller needs very large hub ratio, makes the number of blade meeting on draught fan impeller a lot.In the time that blade quantity is many, blade and wheel hub compress with Hafu-type, and Number of Bolts is a lot, make the uneven torque on every bolt, cause the axial float of blade and wheel hub larger, cause being difficult to control the radial clearance of blade and air duct.So not only make the performance of blower fan not reach original designing requirement, and be very easy to occur security incident.Especially for heap top cooling blower, because its running speed is higher, blower fan delivery pressure is high, makes Hafu-type impeller cannot meet the performance requirement of heap top cooling blower.
Model utility content
The purpose of this utility model is to provide a kind of for piling the impeller of top formula blower fan, and this impeller can overcome the defect that above-mentioned Hafu-type wheel hub impeller expense is high, the strength of materials is not high, structural behaviour is bad.
For achieving the above object, the technological scheme that the utility model adopts is:
A kind of for piling the impeller of top formula blower fan, comprise the blade being arranged on wheel hub, described wheel hub is made up of axle sleeve, wheel disc, cylindrical shell and several piece stiffening rib, wheel disc and stiffening rib are fixedly mounted between axle sleeve and cylindrical shell, on cylindrical shell barrel, edge circumferentially evenly offers several through holes, through hole is made up of with the conical bore that is positioned at cylindrical shell inner side the mounting hole that is positioned at cylindrical shell outside, the lower end of blade is arranged in mounting hole, in conical bore, coordinate the tapered sleeve being provided with outer-hexagonal bolt, outer-hexagonal bolt is fixed together blade and tapered sleeve.Blade is preferably stainless steel wing blade precision casting blade.
As the further setting of such scheme, the bottom, lower end of described blade convexes with centre of location small boss, is concaved with the groove matching with centre of location small boss on the upper-end surface of tapered sleeve.Groove on centre of location small boss on blade and tapered sleeve upper-end surface is equipped with, and the conical bore on tapered sleeve and wheel hub cylindrical shell inner side closely cooperates, well control the axial moment of torsion of aerodynamic force that blade produces under High Rotation Speed, prevented the axial float of blade under centrifugal action.
Between described outer-hexagonal bolt and tapered sleeve, locking plate is installed.Locking plate becomes all outer-hexagonal bolt combination on every blade an entirety and the one side of every outer-hexagonal bolt is fixed, prevent impeller outer-hexagonal bolt loosening in the time that high strength is rotated, better controlled the radial-play between blade and wheel hub.
Assembly process is: blades installation is arrived in the mounting hole of wheel hub cylindrical shell, load onto tapered sleeve in wheel hub cylindrical shell inner side, and the centre of location small boss on tapered sleeve and blade bottom is coordinated, after by several outer-hexagonal bolts, Zhui Tao ﹑ Ye Pian ﹑ wheel hub is connected fastening.Wherein between outer-hexagonal bolt and tapered sleeve, locking plate is installed, locking plate becomes several outer-hexagonal bolt combination on every blade an entirety and the one side of every outer-hexagonal bolt is fixed, and has prevented impeller outer-hexagonal bolt loosening in the time of high speed rotating.
Because the utility model is a kind of for piling the technological scheme that the impeller of top formula blower fan takes be, wheel hub is that corrosion resistant plate is welded, and comparing stainless steel die casting wheel hub, to have processing simple, lightweight, intensity high.Not only have centre of location small boss to coordinate aligned position with tapered sleeve in blade joint, and conical bore on tapered sleeve and wheel hub cylindrical shell inner side closely cooperate.When blower fan is in the time moving, impeller can produce huge centrifugal force under High Rotation Speed active force, and this centrifugal force when larger tapered sleeve coordinate with the conical bore on wheel hub cylindrical shell will be tighter, thereby well control the axial moment of torsion of aerodynamic force that blade produces under High Rotation Speed, prevented the axial float of blade under centrifugal action; The locking plate using not only becomes an entirety by all outer-hexagonal bolt combination on every blade, and has prevented impeller outer-hexagonal bolt loosening in the time of high speed rotating, has better controlled the radial-play between blade and wheel hub.
The advantages such as the utility model impeller possesses structural good, and processing is simple, easy to assembly.Even this impeller of evidence in hub ratio up to 0.75 o'clock, can have good aeroperformance, and 20 multiple blades can be fixedly clamped easily on axial-flow blower below No. 10, and guarantee every blade in the time that blower fan runs up and device for elimination of axial-and radial-play does not occur wheel hub, can be widely used on all kinds of high pressure axial-flow blowers, better meet structure and the performance requirement of the required impeller of nuclear reactor top control rod drive mechanisms (CRD) cooling blower.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is that the utility model is a kind of for piling the impeller three-dimensional structure schematic diagram of top formula blower fan;
Fig. 2 is the structural representation that partly cuts open of the present utility model;
Fig. 3 is the I portion enlarged view in Fig. 2.Wherein:
1. blade; 2. wheel hub; 3. axle sleeve; 4. wheel disc; 5. stiffening rib; 6. cylindrical shell; 7. tapered sleeve; 8. locking plate; 9. outer-hexagonal bolt; 11. centre of location small boss; 61. mounting holes; 62. conical bores; 71. grooves.
Embodiment
As Fig. 1, Fig. 2, shown in Fig. 3, the utility model is a kind of for piling the impeller of top formula blower fan, comprise the blade 1 being arranged on wheel hub 2, wheel hub 2 is by axle sleeve 3, wheel disc 4, cylindrical shell 6 and several piece stiffening rib 5 form, wheel disc 4 and stiffening rib 5 are fixedly mounted between axle sleeve 3 and cylindrical shell 6, on cylindrical shell 6 barrels, edge circumferentially evenly offers several through holes, through hole is made up of with the conical bore 62 that is positioned at cylindrical shell 6 inner sides the mounting hole 61 that is positioned at cylindrical shell 6 outsides, the lower end of blade 1 is arranged in mounting hole 61, the interior cooperation of conical bore 62 is provided with the tapered sleeve 7 with outer-hexagonal bolt 9, outer-hexagonal bolt 9 is fixed together blade 1 and tapered sleeve 7.
In order further to improve performance of the present utility model, convex with centre of location small boss 11 in the bottom, lower end of blade 1, on the upper-end surface of tapered sleeve 7, be concaved with the groove 71 matching with centre of location small boss 11.
In order further to improve performance of the present utility model, between hex head bolt 9 and tapered sleeve 7, locking plate 8 is installed outside.
Assembly process is: blade 1 is installed in mounting hole 61, load onto tapered sleeve 7 in cylindrical shell 6 inner sides, and the groove of tapered sleeve 7 upper-end surfaces 71 and the centre of location small boss 11 on blade 1 bottom are carried out to aligned fit, load onto locking plate 8 at tapered sleeve 7 inner side ends, finally several outer-hexagonal bolts 9 are passed to locking plate 8 and tapered sleeve 7 ﹑ blade 1 ﹑ cylindrical shells 6 are fixed to connection.The one side of every outer-hexagonal bolt 9 is fixed Deng tightening after outer-hexagonal bolt 9, lever up locking plate 8, and all outer-hexagonal bolts 9 on blade 1 are combined into an entirety by locking plate 8, prevent impeller outer-hexagonal bolt 9 loosening in the time of high speed rotating.
When completing on wheel hub 2 after the installation of all blades 1, carry out again can checking and accepting and having used after static and dynamic equilibrium counterweight for piling the impeller of top formula blower fan to the utility model is a kind of.
Above-described embodiment is only for the inventive concept of the present utility model of explaining, but not restriction to the utility model rights protection, allly utilizes this design to carry out the change of unsubstantiality to the utility model, all should fall into protection domain of the present utility model.
Claims (3)
1. one kind for piling the impeller of top formula blower fan, comprise the blade being arranged on wheel hub, it is characterized in that: described wheel hub is made up of axle sleeve, wheel disc, cylindrical shell and several piece stiffening rib, wheel disc and stiffening rib are fixedly mounted between axle sleeve and cylindrical shell, on cylindrical shell barrel, edge circumferentially evenly offers several through holes, through hole is made up of with the conical bore that is positioned at cylindrical shell inner side the mounting hole that is positioned at cylindrical shell outside, the lower end of blade is arranged in mounting hole, in conical bore, coordinate the tapered sleeve being provided with outer-hexagonal bolt, outer-hexagonal bolt is fixed together blade and tapered sleeve.
2. as claimed in claim 1 a kind of for piling the impeller of top formula blower fan, it is characterized in that: the bottom, lower end of described blade convexes with centre of location small boss, is concaved with the groove matching with centre of location small boss on the upper-end surface of tapered sleeve.
3. as claimed in claim 1 or 2 a kind of for piling the impeller of top formula blower fan, it is characterized in that: between described outer-hexagonal bolt and tapered sleeve, locking plate is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320696569.7U CN203627305U (en) | 2013-11-06 | 2013-11-06 | Impeller for reactor top type fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320696569.7U CN203627305U (en) | 2013-11-06 | 2013-11-06 | Impeller for reactor top type fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627305U true CN203627305U (en) | 2014-06-04 |
Family
ID=50813788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320696569.7U Expired - Fee Related CN203627305U (en) | 2013-11-06 | 2013-11-06 | Impeller for reactor top type fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816454A (en) * | 2016-09-14 | 2018-03-20 | 株洲联诚集团有限责任公司 | A kind of axial flow fan vane wheel |
| CN110230607A (en) * | 2019-07-23 | 2019-09-13 | 山西省侯马市鑫丰康风机有限公司 | A method of reinforcing propeller fan wheel hub intensity |
-
2013
- 2013-11-06 CN CN201320696569.7U patent/CN203627305U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816454A (en) * | 2016-09-14 | 2018-03-20 | 株洲联诚集团有限责任公司 | A kind of axial flow fan vane wheel |
| CN110230607A (en) * | 2019-07-23 | 2019-09-13 | 山西省侯马市鑫丰康风机有限公司 | A method of reinforcing propeller fan wheel hub intensity |
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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: 20140604 |