CN203500123U - Gas axial flow fan shell with double-row rear guide blades - Google Patents
Gas axial flow fan shell with double-row rear guide blades Download PDFInfo
- Publication number
- CN203500123U CN203500123U CN201320632671.0U CN201320632671U CN203500123U CN 203500123 U CN203500123 U CN 203500123U CN 201320632671 U CN201320632671 U CN 201320632671U CN 203500123 U CN203500123 U CN 203500123U
- Authority
- CN
- China
- Prior art keywords
- rear guide
- outer cylinder
- axial flow
- biserial
- guide vane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 241000886569 Cyprogenia stegaria Species 0.000 title abstract 8
- 239000003034 coal gas Substances 0.000 claims description 21
- 230000035515 penetration Effects 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 3
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
- F04D29/544—Blade shapes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a gas axial flow fan shell with double-row rear guide blades, and belongs to the technical field of gas axial flow fans. The fan shell is wholly in a horizontal subdivision type, and comprises a fan shell flange (1), an inner cylinder end plate (2), an outer cylinder (3), an inner cylinder (4), a bearing pedestal base (8), a fan shell support (9), an outer cylinder rib plate (10) and a fan shell base plate (14). The fan shell is characterized in that the double-row rear guide blades are evenly distributed between the outer cylinder (3) and the inner cylinder (4) in the circumferential direction, the structural rigidity and fan running efficiency of the fan shell are obviously improved by adopting the double-row rear guide blades, due to the adoption of wing-type threading pipes and threading pipe protective pipes, an oil pipe or a cable can be led in or led out, protection and detection of equipment are facilitated, the bearing pedestal base is good in rigidity, the safe running of a bearing pedestal is ensured, access holes are formed in the inner cylinder end plate and the outer cylinder, overhauling or dust cleaning is facilitated, a thermal preservation layer is arranged inside the inner cylinder and can ensure that a bearing can run under the non-high-temperature situation.
Description
Technical field
The utility model belongs to coal gas axial flow fan technical field, is specifically related to a kind of coal gas axial flow fan casing with biserial rear guide vane.
Background technique
Can coal gas axial flow fan plays a very important role in iron and steel is produced, because guarantee the manufacturing efficiency that it is long-term, stable operation is being related to iron and steel enterprise.But in actual production, coal gas axial flow fan operation troubles happens occasionally, safety in production and the environment protection standard work of Iron And Steel Plant have been had a strong impact on.Wherein, because the unreasonable fault causing of coal gas axial flow fan casing design is also occupied certain ratio.
At present, unreasonable the showing of coal gas axial flow fan casing design: rear guide vane is single circular arc type curve, affects fan operation efficiency; Because rear guide vane is single circular arc type curve, so rigidity is not enough, cause blower fan to vibrate when high speed, in the time of need to improving rotation speed of fan carrying out the on-the-spot transformation of blower fan especially, run into the problem of casing recurring structure resonance; Bearing block base structural rigidity is not enough, also causes vibration; There is no suitable access opening, cause Site Detection and safeguard inconvenience; Thermal insulation layer or thermal insulation layer weak effect are not set up in casing inside, cause Bearing Temperature and reduce bearing life etc.
For this reason, the utility model, according to above-mentioned, has proposed the technological scheme of the above-mentioned problems of a kind of effective solution.
Summary of the invention
The purpose of this utility model is the disadvantage existing for above-mentioned existing coal gas axial flow fan casing, and a kind of coal gas axial flow fan casing with biserial rear guide vane is provided, and it has adopted biserial rear guide vane and has obviously improved casing structure rigidity and fan operation efficiency; The employing of aerofoil profile penetration pipe, penetration pipe pillar, can therefrom introduce or draw oil pipe or cable, is conducive to again equipment protection and detection; Bearing block base good rigidly, has guaranteed bearing support safe operation; On inner barrel end plate, outer cylinder body, offer access opening, be conducive to maintenance or deashing work; Inner at inner barrel, be provided with thermal insulation layer and can protect bearing to move under non high temperature condition.
Above-mentioned goal of the invention is achieved through the following technical solutions, a kind of coal gas axial flow fan casing with biserial rear guide vane, and casing global design is horizonally split formula, it comprises casing flange, inner barrel end plate, outer cylinder body, inner barrel, thermal insulation layer, bearing block base, casing supports, outer cylinder body floor, chassis backplane, its main points are to be along the circumferential direction shaped with between outer cylinder body and inner barrel equally distributed biserial rear guide vane.
As preferably, described biserial rear guide vane forms by 17～21 groups, every group is become by two board-like vane group of single circular arc, their the circular arc center of circle of single circular arc plate blade, radius of arc, airflow inlet angle α and flow outlet angle β are all different, the two have vertically one section overlapping, but along circumferentially keeping spacing; α=45 ± 5 °, airflow inlet angle, β=85, flow outlet angle °+5 °.
As preferably, between described outer cylinder body and inner barrel, be provided with 1～2 aerofoil profile penetration pipe, on outer cylinder body, there are the penetration pipe pillar of 1～2 three-port structure and 1～2 aerofoil profile penetration pipe to be connected.
As preferably, on described outer cylinder body, offer access opening, on inner barrel end plate, offer access opening.
As preferably, described bearing block base is rivet welding part structure, is mutually intersecting parallels and within being welded in inner barrel by each 2 with upper vertical plate, transverse slat, gusset.
As preferably, described inner barrel, is provided with thermal insulation layer in it.
As preferably, described outer cylinder body, its two concentric of inner barrel, the diameter ratio of the two is 0.75～0.80.
As preferably, on described outer cylinder body, offering access opening is rectangle access opening, and on inner barrel end plate, offering access opening is fan-shaped access opening.
The utility model is compared and is had following beneficial effect with the coal gas axial flow fan casing of prior art: the one, and outer cylinder body and inner barrel are along the circumferential direction evenly distributed with biserial rear guide vane between the two, biserial rear guide vane forms by 17～21 groups, every group of biserial rear guide vane has two single circular arc plate blades, such structure had both been conducive to the mobile axial flow that is converted to of circumference of air-flow, improved fan efficiency, be conducive to again the significantly rigidity of enhanced machine shell structure, be conducive to improve rotation speed of fan, to adapt to the scene transformation of blower fan.The 2nd, whole casing design adopts horizonally split formula, can facilitate the installation of bearing support and rotor; The 3rd, the diameter ratio of inner barrel and outer cylinder body is 0.75～0.80, makes its versatility stronger; The 4th, offer 1～2 aerofoil profile penetration pipe and 1～2 penetration pipe pillar, it can strengthen the rigidity of biserial rear guide vane, therefrom can introduce or draw oil pipe or cable again, is also conducive to equipment protection and detection; Penetration pipe pillar is three-port structure, supervisor be placed on outside aerofoil profile penetration pipe, shield and looped pipeline for the coal gas diffusing or drainage is overflowed.The 5th, on inner barrel end plate, offer fan-shaped access opening, on outer cylinder body, offer rectangle access opening, the two convenient maintenance and deashing work; The 6th, bearing block base rigidity is strong, has guaranteed the safe operation of bearing support; The 7th, inner barrel is provided with thermal insulation layer, can protect bearing to move under non high temperature condition.
Accompanying drawing explanation
Fig. 1: the partial sectional view of the utility model plan view.
The A of Fig. 2: Fig. 1 is to view.
The local expansion figure of the biserial rear guide vane of Fig. 3: Fig. 1.
In Fig. 1-3,1-casing flange, 2-inner barrel end plate, 3-outer cylinder body, 4-inner barrel, 5-biserial rear guide vane, 6-hanger, 7-thermal insulation layer, 8-bearing block base, 9-casing supports, 10-outer cylinder body floor, 11-access opening, 12-penetration pipe pillar, 13-access opening, 14-chassis backplane, 15-aerofoil profile penetration pipe, 16, the mono-circular arc plate blade of 17-
Embodiment
With regard to the represented embodiment in Fig. 1-3, the utility model is described in further detail below, a kind of coal gas axial flow fan casing with biserial rear guide vane, and casing integral body is horizonally split formula, it comprises casing flange 1, inner barrel end plate 2, outer cylinder body 3, inner barrel 4, bearing block base 8, casing supports 9, outer cylinder body floor 10, chassis backplane 14, outer cylinder body 3 and inner barrel 4 its two concentrics, the diameter ratio of the two is 0.8.Between outer cylinder body 3 and inner barrel 4, be along the circumferential direction shaped with equally distributed biserial rear guide vane 5; Described biserial rear guide vane 5 forms by 17 groups, every group is comprised of two single circular arc plate blades (16), (17), single circular arc plate blade (16), (17) their circular arc center of circle, radius of arc, airflow inlet angle α and flow outlet angle β are all different, the two have vertically one section overlapping, but along circumferentially keeping spacing; α=45 ± 5 °, airflow inlet angle, and β=85, flow outlet angle °+5 °; Between outer cylinder body 3 and inner barrel 4, be provided with 1 aerofoil profile penetration pipe 15, on outer cylinder body 3, have the penetration pipe pillar 12 of a three-port structure to be connected with aerofoil profile penetration pipe 15; On outer cylinder body 3, offer access opening 11, access opening 11 is rectangle access openings, on inner barrel 4 end plates, offers access opening 13, and access opening 13 is fan-shaped access openings; Described bearing block base 8 is rivet welding part structure, by 2 risers, 2 transverse slats, 3 gussets, is mutually intersecting parallels and within being welded in inner barrel 4.Described inner barrel 4, is provided with thermal insulation layer 7 in it.
Claims (8)
1. a coal gas axial flow fan casing with biserial rear guide vane, casing integral body is horizonally split formula, it comprises casing flange (1), inner barrel end plate (2), outer cylinder body (3), inner barrel (4), bearing block base (8), casing supports (9), outer cylinder body floor (10), chassis backplane (14), is characterized in that being along the circumferential direction shaped with equally distributed biserial rear guide vane (5) between outer cylinder body (3) and inner barrel (4).
2. the coal gas axial flow fan casing with biserial rear guide vane according to claim 1, it is characterized in that, described biserial rear guide vane (5) forms by 17～21 groups, every group is comprised of two single circular arc plate blades (16), (17), single circular arc plate blade (16), (17) their circular arc center of circle, radius of arc, airflow inlet angle α and flow outlet angle β are all different, the two have vertically one section overlapping, but along circumferentially keeping spacing; α=45 ± 5 °, airflow inlet angle, β=85, flow outlet angle °+5 °.
3. the coal gas axial flow fan casing with biserial rear guide vane according to claim 1, it is characterized in that, between described outer cylinder body (3) and inner barrel (4), be provided with 1～2 aerofoil profile penetration pipe (15), on outer cylinder body (3), have the penetration pipe pillar (12) of 1～2 three-port structure and 1～2 aerofoil profile penetration pipe (15) to be connected.
4. the coal gas axial flow fan casing with biserial rear guide vane according to claim 1, is characterized in that, offers access opening (11) on outer cylinder body (3), on inner barrel (4) end plate, offers access opening (13).
5. the coal gas axial flow fan casing with biserial rear guide vane according to claim 1, it is characterized in that described bearing block base (8) is for rivet welding part structure, by each 2, with upper vertical plate, transverse slat, gusset, be mutually intersecting parallels and within being welded in inner barrel (4).
6. the coal gas axial flow fan casing as claimed in claim 1 with biserial rear guide vane, is characterized in that, described inner barrel (4) is provided with thermal insulation layer (7) in it.
7. according to the coal gas axial flow fan casing with biserial rear guide vane described in claims 1, it is characterized in that, described outer cylinder body (3), its two concentric of inner barrel (4), the diameter ratio of the two is 0.75～0.80.
8. according to the coal gas axial flow fan casing with biserial rear guide vane described in claims 4, it is characterized in that, on outer cylinder body (3), offering access opening (11) is rectangle access opening, and on inner barrel (4) end plate, offering access opening (13) is fan-shaped access opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320632671.0U CN203500123U (en) | 2013-10-14 | 2013-10-14 | Gas axial flow fan shell with double-row rear guide blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320632671.0U CN203500123U (en) | 2013-10-14 | 2013-10-14 | Gas axial flow fan shell with double-row rear guide blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500123U true CN203500123U (en) | 2014-03-26 |
Family
ID=50331105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320632671.0U Expired - Lifetime CN203500123U (en) | 2013-10-14 | 2013-10-14 | Gas axial flow fan shell with double-row rear guide blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500123U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050713A (en) * | 2015-04-08 | 2016-10-26 | 三星电子株式会社 | Fan assembly and air conditioner with fan assembly |
| CN107477027A (en) * | 2016-06-08 | 2017-12-15 | 施乐百欧洲公司 | Fan unit |
| CN111980969A (en) * | 2020-08-07 | 2020-11-24 | 中国人民解放军63837部队 | Double-layer shell for ultralow temperature axial flow compressor |
| CN112620995A (en) * | 2020-12-07 | 2021-04-09 | 陕西广大重型机械有限公司 | Fan welding process |
| CN113864234A (en) * | 2021-10-29 | 2021-12-31 | 西安热工研究院有限公司 | Structure and method for additionally mounting balance block on centrifugal fan impeller |
-
2013
- 2013-10-14 CN CN201320632671.0U patent/CN203500123U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050713A (en) * | 2015-04-08 | 2016-10-26 | 三星电子株式会社 | Fan assembly and air conditioner with fan assembly |
| CN107477027A (en) * | 2016-06-08 | 2017-12-15 | 施乐百欧洲公司 | Fan unit |
| CN111980969A (en) * | 2020-08-07 | 2020-11-24 | 中国人民解放军63837部队 | Double-layer shell for ultralow temperature axial flow compressor |
| CN111980969B (en) * | 2020-08-07 | 2022-09-23 | 中国人民解放军63837部队 | Double-layer shell for ultralow temperature axial flow compressor |
| CN112620995A (en) * | 2020-12-07 | 2021-04-09 | 陕西广大重型机械有限公司 | Fan welding process |
| CN112620995B (en) * | 2020-12-07 | 2022-07-12 | 陕西广大重型机械有限公司 | Fan welding process |
| CN113864234A (en) * | 2021-10-29 | 2021-12-31 | 西安热工研究院有限公司 | Structure and method for additionally mounting balance block on centrifugal fan impeller |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |
|
| CX01 | Expiry of patent term |