CN202149080U - Coal gas axial flow fan provided with performance stabilizer - Google Patents
Coal gas axial flow fan provided with performance stabilizer Download PDFInfo
- Publication number
- CN202149080U CN202149080U CN201120259712U CN201120259712U CN202149080U CN 202149080 U CN202149080 U CN 202149080U CN 201120259712 U CN201120259712 U CN 201120259712U CN 201120259712 U CN201120259712 U CN 201120259712U CN 202149080 U CN202149080 U CN 202149080U
- Authority
- CN
- China
- Prior art keywords
- impeller
- coal gas
- gas axial
- axial flow
- wall
- 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
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a coal gas axial flow fan provided with a performance stabilizer and belongs to the technical field of coal gas axial flow fans. The coal gas axial flow fan provided with the performance stabilizer comprises an impeller outer cylinder, guide vanes, a spindle, an impeller and a spindle-protection cylinder, wherein the impeller and the spindle-protection cylinder are installed on the spindle. The coal gas axial flow fan provided with the performance stabilizer is characterized in that the performance stabilizer is arranged on the expanded circumferential inner wall of the impeller outer cylinder in front of the impeller; the performance stabilizer is structure in a mode that 15-32 arc-shaped guide vanes are uniformly distributed on the expanded circumferential inner wall of the impeller outer cylinder; the 15-32 arc-shaped guide vanes have the same installation angles; one sides of the arc-shaped guide vanes are axially welded on the expanded circumferential inner wall of the impeller outer cylinder, and the other sides of the arc-shaped guide vanes are welded on a ring-shaped inner ring; an inlet capable of leading reverse airflow to be diverted into main airflow and an outlet capable of leading the reverse airflow to be diverted into the main airflow are arranged between the expanded circumferential inner wall of the impeller outer cylinder and the performance stabilizer; and the performance stabilizer is made of metal materials. In the utility model, the stable work range of the coal gas axial flow fan is widened, so that the work points of the coal gas axial flow fan can not be limited by a stall line, thereby improving the work efficiency.
Description
Technical field
The utility model belongs to coal gas axial-flow blower technical field, is specifically related to a kind of coal gas axial-flow blower that is provided with the stable performance device.
Background technique
The coal gas axial-flow blower belongs to meridian accelerating fan; Its performance curve produces fracture near efficient region; Reason is that air-flow has produced serious vortex along the impeller blade short transverse, promptly produces sudden change stall phenomenon, and this is the intrinsic stalling characteristics of such blower fan; The reason that produces the problems referred to above is: blower fan moves stable performance under the specified inlet volume flow of air-flow; But when the inlet volume flow reduces, stall will appear in a part or the whole entrance section of impeller outer diameter, because serious tangential gas flow (vortex), air-flow begins reverse refluence, and the air-flow in impeller eye cross section will be more and more unstable this moment.The disadvantage of above-mentioned existence must influence the normal operation of coal gas axial-flow blower, and the result has also influenced the normal operation of iron and steel enterprise's coal gas axial-flow blower upstream device, thereby brings loss to iron and steel enterprise.But with regard to the coal gas axial-flow blower, at present no matter import or homemade coal gas axial-flow blower of existing technology still do not have and sees effective solution to the problems described above.
Summary of the invention
The purpose of the utility model is that a kind of coal gas axial-flow blower that is provided with the stable performance device will be provided, and it can enlarge the stable operation range of coal gas axial-flow blower, makes its operation point not receive the restriction of stall line, thereby improves the working efficiency of coal gas axial-flow blower.
Above-mentioned goal of the invention realizes through following technological scheme; A kind of coal gas axial-flow blower that is provided with the stable performance device, it comprises the impeller urceolus of coal gas axial-flow blower, stator, main shaft; The impeller of installing on the main shaft with protect beam barrel; Its main points are that the impeller urceolus of impeller front is equipped with the stable performance device on the circumferential inner wall of hole enlargement, and the structure of stable performance device is on the circumferential inner wall of hole enlargement, to be evenly distributed with 15～32 arc guide vanes at the impeller urceolus, and the established angle of 15～32 arc guide vanes is identical; The arc guide vane is welded in the impeller urceolus on the circumferential inner wall of hole enlargement on one side vertically, encircles in the annular Yi Bian be welded in; The impeller urceolus is equipped with back draught turn of tidal stream inlet/outlet again between the circumferential inner wall of hole enlargement and stable performance device; Stable performance device material therefor is metallic material.
When the utility model reduces when the inlet volume flow, stall will appear in a part or the whole entrance section of impeller outer diameter, because serious tangential gas flow (vortex); Air-flow begins reverse refluence; Because be provided with the stable performance device, then the arc guide vane of stable performance device will force back draught to change main air flow again over to, thereby eliminate tangential gas flow (vortex); Make the smooth no disturbance of air-flow that impeller sucks; Its result is exactly that blower fan can stable operation, thereby efficiently solves fracture of coal gas axial-flow blower performance curve and the not broad problem of operating range, has improved the working efficiency of coal gas axial-flow blower.In addition, the installation of the utility model, operation are identical with existing coal gas axial-flow blower, in industry, push away expansion easily.
Description of drawings
Fig. 1: the structural representation that the utility model is analysed and observe through the part parts
Fig. 2: stable performance device structural representation
The A-A sectional view of Fig. 3: Fig. 2
Fig. 4: existing coal gas axial-flow blower structural representation
Among Fig. 1-2,1-impeller urceolus, the 2-impeller, the 3-main shaft, the 4-impeller, 5-protects beam barrel, 6-circumferential inner wall 7-stable performance device, 8-arc guide vane, ring in the 9-annular, 10-outlet, 11-import
Fig. 4: existing coal gas axial-flow blower structural representation
Among Fig. 4,12-impeller urceolus, the 13-stator, the 14-main shaft, the 15-impeller, 16-protects beam barrel
Embodiment
By Fig. 1 represented be the utility model one embodiment; It comprises the impeller urceolus 1 of coal gas axial-flow blower, stator 2, main shaft 3; The impeller of installing on the main shaft 34 with protect beam barrel 5; The impeller urceolus 1 that it is characterized in that impeller 4 fronts is equipped with stable performance device 7 on the circumferential inner wall 6 of hole enlargement, the structure of stable performance device 7 is that on the circumferential inner wall 6 of hole enlargement, to be evenly distributed with the established angle of 8,25 arc guide vanes 8 of 25 arc guide vanes at impeller urceolus 1 identical; Arc guide vane 8 is welded in impeller urceolus 1 on the circumferential inner wall 6 of hole enlargement on one side vertically, encircles on 9 in the annular Yi Bian be welded in; Impeller urceolus 1 is equipped with back draught turn of tidal stream inlet/ outlet 11,10 again between the circumferential inner wall 6 of hole enlargement and stable performance device 7; Stable performance device material therefor is metallic material.
Claims (1)
1. coal gas axial-flow blower that is provided with the stable performance device; It comprises the impeller urceolus of coal gas axial-flow blower; Stator, main shaft, the impeller of installing on the main shaft with protect beam barrel, it is characterized in that the impeller urceolus of impeller front is equipped with the stable performance device on the circumferential inner wall of hole enlargement; The structure of stable performance device is on the circumferential inner wall of hole enlargement, to be evenly distributed with 15～32 arc guide vanes at the impeller urceolus; The established angle of 15～32 arc guide vanes is identical, Yi Bian the arc guide vane is welded in the impeller urceolus vertically on the circumferential inner wall of hole enlargement, encircles in the annular Yi Bian be welded in; The impeller urceolus is equipped with back draught turn of tidal stream inlet/outlet again between the circumferential inner wall of hole enlargement and stable performance device; Stable performance device material therefor is metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120259712U CN202149080U (en) | 2011-07-21 | 2011-07-21 | Coal gas axial flow fan provided with performance stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120259712U CN202149080U (en) | 2011-07-21 | 2011-07-21 | Coal gas axial flow fan provided with performance stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202149080U true CN202149080U (en) | 2012-02-22 |
Family
ID=45590140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120259712U Expired - Lifetime CN202149080U (en) | 2011-07-21 | 2011-07-21 | Coal gas axial flow fan provided with performance stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202149080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382260A (en) * | 2016-10-14 | 2017-02-08 | 中国科学院工程热物理研究所 | Gas compressor chordwise groove flow guiding sheet type casing treatment method and device |
-
2011
- 2011-07-21 CN CN201120259712U patent/CN202149080U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382260A (en) * | 2016-10-14 | 2017-02-08 | 中国科学院工程热物理研究所 | Gas compressor chordwise groove flow guiding sheet type casing treatment method and device |
| CN106382260B (en) * | 2016-10-14 | 2018-08-10 | 中国科学院工程热物理研究所 | A kind of tangential groove water conservancy diversion chip treated casing method and device of compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102518997B1 (en) | double inverted fan | |
| US8568095B2 (en) | Reduced tip clearance losses in axial flow fans | |
| CN202157978U (en) | Energy-saving tunnel type axial flow fan | |
| CN104653496A (en) | Single-double-suction adjustable centrifugal ventilator | |
| CN102506029A (en) | Centrifugal fan impeller and centrifugal fan | |
| CN104454664A (en) | Multi-wing centrifugal fan | |
| CN104675748B (en) | A kind of low noise with conduit is without spiral case centrifugal fan | |
| CN110966261B (en) | Gas-entraining structure and method for casing of gas compressor and aircraft engine | |
| JP2008151022A (en) | Cascade of axial flow compressor | |
| CN104989668A (en) | Hydraulic design method of back blade balance axial force vortex pump | |
| CN109404305B (en) | Bionic blade volute-free centrifugal ventilator | |
| RU2013104194A (en) | GAS TURBINE INSTALLATION AND COMPRESSOR SECTION OF GAS TURBINE INSTALLATION (OPTIONS) | |
| CN103758796A (en) | Anti-surge ring mechanism of cooling fan of control rod drive mechanism | |
| CN201368039Y (en) | Efficient anti-surging axial flow fan | |
| CN202149080U (en) | Coal gas axial flow fan provided with performance stabilizer | |
| JP2009041373A (en) | Turbo compressor | |
| CN105179275A (en) | Novel mixed flow pipeline fan | |
| CN109885886B (en) | Hydraulic design method for reducing hump of multi-stage pump head curve | |
| JP2016050486A (en) | Fluid machinery and impeller of fluid machinery | |
| JP2010236401A (en) | Centrifugal fluid machine | |
| CN204284016U (en) | A kind of multi-wing centrifugal fan | |
| CN101737358B (en) | Asymmetric self-circulation processing case with slotting position of parabola distribution for centrifugal compressor | |
| CN202360458U (en) | Multi-wing centrifugal fan with reinforced air inlet function | |
| CN201739231U (en) | Flow-guiding protective screen for axial flow fan of air conditioner | |
| CN205207221U (en) | Fan |
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: 20120222 |