CN2069501U - Vane wheel for big centrifugal blower - Google Patents
Vane wheel for big centrifugal blower Download PDFInfo
- Publication number
- CN2069501U CN2069501U CN 90212613 CN90212613U CN2069501U CN 2069501 U CN2069501 U CN 2069501U CN 90212613 CN90212613 CN 90212613 CN 90212613 U CN90212613 U CN 90212613U CN 2069501 U CN2069501 U CN 2069501U
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- welding
- front shroud
- back reel
- impeller
- welded
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Abstract
The utility model discloses a vane wheel for big centrifugal blowers for exhausting the coal (smoke) gas of smelting oxygen top blowing converters or atomized vanadium extracting stoves. A front wheel cover is formed by welding a set of cambered welding pieces and a set of fan-shaped welding pieces. A back shaft disc is formed by welding a wheel hub and a wheel disc. A fully welding integral structure is formed by welding a plurality of long and short vanes, the back shaft disc and the front wheel cover. The vane wheel for big centrifugal blowers removes both ends of the rivets and the long and short riveting vanes of the existing large-sized riveted structure. Thus the manufacturing steel can be reduced by 50%; the hidden trouble of an inner flow passage is eliminated, and the resistant force is reduced.
Description
The utility model relates to a kind of compression and carries the deliver coal large centrifugal blower fan impeller of (cigarette) gas of air and other gas, particularly oxygen top-blown converter or vanadium extraction by spray blowing fire grate.This impeller has front shroud, back reel and some deviated splitter vanes.
Present large centrifugal blower fan both domestic and external is adopting a kind of form of riveted structure accidentally with impeller, for example diameter impeller at 1550 millimeters: promptly by special steel part rivet with the deviated splitter vane of some large-scale " " type profiles and front shroud and after the reel forged steel pieces assemble and rivet integral body.The impeller of this structure uses rivet easily to become flexible, cause fracture for a long time or comes off, and needs the first quarter moon maintenance once for stopping the user of accident potential; Inner flow passage blade caulking part steric hindrance power is big in addition, dust stratification is many, and mechanical property is subjected to the serious restriction of structure.China's patent No. be the patent of invention of CN86101458A narrated a kind of by complicated three-axis controller three axial positions of machine tool control master material and cut the back reel that the master material forms the band blade, be assembled into the centrifugal fan impeller with front shroud welding (or riveted joint) then, the impeller of this structure only is suitable for more small-sized centrifugal fan adapted.
The purpose of this utility model is to adopt the existing deficiency of riveted structure that a kind of large centrifugal blower fan impeller that forms by erection welding is provided for solving present large-scale impeller.
Its solution is: this impeller is welded into front shroud jointly by the air intake circle of setting down and processing and the inside and outside shrouding disc of sectional stamping and processing; Be welded into the back reel by forging with wheel hub of processing and wheel disc; And the blade of pressing some length quantity of shape to equate by processing is welded into full welding type overall structure with back reel and front shroud dress.
Impeller of the present utility model, because thoroughly removed the riveting portion at rivet and deviated splitter vane two ends, manufacturing dress welding structure is lacked than the manufacturing riveted structure uses steel more than 50%, weight and rotary inertia diminish, technical-economic index and mechanical property significantly improve, overcome existing large-scale built-up impeller loosing of rivet caused fracture, hidden danger comes off; Next is that front shroud forms because of adopting welding with the back reel, has solved the present manufacturing difficulty that extensively exists of large-scale impeller, makes the manufacturing cycle of dress weldering ratio riveted joint shorten over half; Owing to the runner internal resistance reduces, is difficult for dust stratification, running steadily, make the blower fan on-stream period prolongation 50% of the blower fan of dress weldering impeller than rivet welding impeller again, the steel making furnace number can increase by 40% in the same period.
Concrete erection welding structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is according to the large centrifugal blower fan blade wheel structure view that the utility model proposes.
Fig. 2 is that back reel (1) the welding back of this impeller and the dress of some long and short blades (10 and 11) are welded into shape figure.
Fig. 3 is the pie graph after the front shroud (2) of this impeller is welded.
As shown in the figure, the front shroud of this impeller (2) is carried out ultrasonic flaw detection and machining after being formed by the common welding of the air intake circle (5) of the inside and outside shrouding disc (6,7) of sectional stamping and processing and setting down and processing; Back reel (1) is formed by wheel disc (8) welding that the hub (9) that forges is shaped with machining after ultrasonic flaw detection and lathe roughing, and carries out ultrasonic flaw detection and machining; After full milling periphery, pressing blade (3) that the heavy some length quantity of shape choosing equate and line reel (1) to line spot welding assembling after, with front shroud (2) centering location, further assemble spot welding and help the welding type overall structure.The integral wheel of dress postwelding through melt down meet fire heat to 750 ° after slow cooling to normal temperature, carry out the processing of outer surface finish turning; Detect debugging and make dynamic balance running with rotor shaft (4) heat seal assembling, static balancing.Front shroud (2), back reel (1) and blade (3) material that some length quantity equate are the identical 15MnVR general chemistry alloyed steel of model.Front shroud (2) adopts the welding consumables of the trade mark for knot 507 with the assembling of back reel (1); The blade (3) that some length quantity equate adopts the welding consumables of the trade mark for knot 502 with the assembling of front shroud (2) and back reel (1).Welding method adopt can indoor flat, horizontal, stand, face upward the position welding, be suitable for welding low alloy steel, welded joint and mother metal and can reach equicohesive manual electric arc welding.150 ℃ of heat are given in fitting joint place before the welding, and insulation is 80 ℃ after 150 ℃ of bakings of welding consumables.During assembling, the air intake circle (5) of front shroud (2) partly by three in groups arc weldment (14,15,19) opposite joint be welded to form, distance between the toes of a weld is 28 millimeters, assembling back husky wheel back chipping and machining; Inside and outside shrouding disc (6,7) is partly respectively by three fan-shaped in groups weldments (13,17,20; 12,16,18) opposite joint is welded to form, 25～28 millimeters of distance between the toes of a weld, assembling back shaping and machining.Front shroud (2) and back reel (1) they are two-sided butt welding, 1～2 millimeter of fit up gap, and 25～28 millimeters of distance between the toes of a weld, the angle of bevel of assembling weld seam is 30 degree.Between blade (3) that some long and short quantity equate and front shroud (2) and the back reel (1) is two-sided horizontal fillet welding, 1～1.5 millimeter of fit up gap, and weld is not opened the assembling weld groove.Its long and short blade (10 and 11) respectively is 13, and intersection is distributed on the relative conocave plane of front shroud (2) and back reel (1).Adopted clamping apparatus to limit the fit up gap in the welding assembling,, improved the efficient of welding assembling to guarantee to weld accurately relative position and weldquality.
This impeller is used for D1850-11 type centrifugal blower and carries out industrial experimentation, and continuous operation is the test of back shutdown inspection more than six months, and every performance index still are in normal steady state.
Claims (7)
1. large centrifugal blower fan impeller with front shroud, back reel and some deviated splitter vanes, it is characterized in that: this impeller is welded into front shroud (2) jointly by the air intake circle (5) of setting down and processing and the inside and outside shrouding disc (6,7) of sectional stamping and processing; Be welded into back reel (1) by forging with hub of processing (9) and wheel disc (8); And the blade (3) of pressing some length quantity of shape to equate by processing is welded into full welding type overall structure with back reel (1) and front shroud (2) dress.
2. impeller according to claim 1 is characterized in that: front shroud (2), back reel (1) and blade (3) material that some length quantity equate are the identical 15MnVE general chemistry alloyed steel of model.
3. impeller according to claim 1 is characterized in that: front shroud (2) adopts the welding consumables of the trade mark for knot 507 with the assembling of back reel (1); The blade (3) that some length quantity equate adopts the welding consumables of the trade mark for knot 502 with the assembling of front shroud (2) and back reel (1).
4. impeller according to claim 1 is characterized in that: front shroud (2) and back reel (1) they are two-sided butt welding, 1～2 millimeter of fit up gap, and the angle of bevel of assembling weld seam is 30 degree.
5. impeller according to claim 1 is characterized in that: be two-sided horizontal fillet welding, 1～1.5 millimeter of fit up gap between blade (3) that some length quantity equate and front shroud (2) and the back reel (1).
6. impeller according to claim 1 is characterized in that: long and short blade (10 and 11) respectively is 13, and intersection is spared on the relative conocave plane that is distributed in front shroud (2) and back reel (1).
7. impeller according to claim 1 is characterized in that: the air intake circle (5) of front shroud (2) part by three in groups arc weldment (14,15,19) opposite joint be welded to form; Inside and outside shrouding disc (6,7) is partly respectively by three fan-shaped in groups weldments (13,17,20; 12,16,18) opposite joint is welded to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212613 CN2069501U (en) | 1990-04-29 | 1990-04-29 | Vane wheel for big centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212613 CN2069501U (en) | 1990-04-29 | 1990-04-29 | Vane wheel for big centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2069501U true CN2069501U (en) | 1991-01-16 |
Family
ID=4892152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90212613 Withdrawn CN2069501U (en) | 1990-04-29 | 1990-04-29 | Vane wheel for big centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2069501U (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073487C (en) * | 1994-08-05 | 2001-10-24 | 中国水利水电第四工程局机电安装处 | In-situ welding method for assembling split wheels of large-scale mixed turbine |
| CN100348868C (en) * | 2005-06-29 | 2007-11-14 | 湖北双剑鼓风机制造有限公司 | Sulfuric acid centrifugal blower for plateau |
| CN101793264A (en) * | 2010-04-28 | 2010-08-04 | 自贡市红旗泵业密封件制造有限公司 | Method for manufacturing impeller of desulphurization circulating pump |
| CN101922469A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Centrifuged fan |
| CN101922468A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Impeller of centrifugal fan |
| CN102011749A (en) * | 2010-12-23 | 2011-04-13 | 江苏国泉泵业制造有限公司 | Round head punched blade non-clogging impeller |
| CN101691008B (en) * | 2009-03-19 | 2011-06-22 | 无锡透平叶片有限公司 | Structural design method of TC11 alloy blisk precision forging |
| CN102312857A (en) * | 2011-08-25 | 2012-01-11 | 张家港市东丰特种风机有限公司 | Impeller of heated-air circulation fan |
| US20130272895A1 (en) * | 2011-02-24 | 2013-10-17 | Akihiro Nakaniwa | Impeller, rotor comprising same, and impeller manufacturing method |
| CN103492725A (en) * | 2011-12-26 | 2014-01-01 | 三菱重工业株式会社 | Impeller and rotary machine provided with same |
| CN104963890A (en) * | 2015-08-03 | 2015-10-07 | 吉首大学 | Dirt retention prevention draught fan impeller with reverse-drop-shaped blades |
| CN105275873A (en) * | 2015-10-27 | 2016-01-27 | 上海华鼓鼓风机有限公司 | Three-dimensional flow closed type casting impeller used for low-speed running air blower |
| CN106122084A (en) * | 2016-08-29 | 2016-11-16 | 重庆水泵厂有限责任公司 | A kind of low specific speed impeller structure and processing method thereof |
| CN106536941A (en) * | 2014-08-04 | 2017-03-22 | 日本空调系统股份有限公司 | Attachment structure for fan |
| US9903385B2 (en) | 2011-08-29 | 2018-02-27 | Mitsubishi Heavy Industries Compressor Corporation | Impeller, rotary machine including the same, and method for manufacturing impeller |
| CN109965821A (en) * | 2017-12-28 | 2019-07-05 | 宁波方太厨具有限公司 | A kind of cleaning machine |
-
1990
- 1990-04-29 CN CN 90212613 patent/CN2069501U/en not_active Withdrawn
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073487C (en) * | 1994-08-05 | 2001-10-24 | 中国水利水电第四工程局机电安装处 | In-situ welding method for assembling split wheels of large-scale mixed turbine |
| CN100348868C (en) * | 2005-06-29 | 2007-11-14 | 湖北双剑鼓风机制造有限公司 | Sulfuric acid centrifugal blower for plateau |
| CN101691008B (en) * | 2009-03-19 | 2011-06-22 | 无锡透平叶片有限公司 | Structural design method of TC11 alloy blisk precision forging |
| CN101922469A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Centrifuged fan |
| CN101922468A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Impeller of centrifugal fan |
| CN101793264A (en) * | 2010-04-28 | 2010-08-04 | 自贡市红旗泵业密封件制造有限公司 | Method for manufacturing impeller of desulphurization circulating pump |
| CN102011749A (en) * | 2010-12-23 | 2011-04-13 | 江苏国泉泵业制造有限公司 | Round head punched blade non-clogging impeller |
| US20130272895A1 (en) * | 2011-02-24 | 2013-10-17 | Akihiro Nakaniwa | Impeller, rotor comprising same, and impeller manufacturing method |
| US9611742B2 (en) * | 2011-02-24 | 2017-04-04 | Mitsubishi Heavy Industries, Ltd. | Impeller, rotor comprising same, and impeller manufacturing method |
| CN102312857A (en) * | 2011-08-25 | 2012-01-11 | 张家港市东丰特种风机有限公司 | Impeller of heated-air circulation fan |
| US9903385B2 (en) | 2011-08-29 | 2018-02-27 | Mitsubishi Heavy Industries Compressor Corporation | Impeller, rotary machine including the same, and method for manufacturing impeller |
| CN103492725A (en) * | 2011-12-26 | 2014-01-01 | 三菱重工业株式会社 | Impeller and rotary machine provided with same |
| US9664055B2 (en) | 2011-12-26 | 2017-05-30 | Mitsubishi Industries, Ltd. | Impeller and rotary machine provided with the same |
| CN106536941A (en) * | 2014-08-04 | 2017-03-22 | 日本空调系统股份有限公司 | Attachment structure for fan |
| CN104963890A (en) * | 2015-08-03 | 2015-10-07 | 吉首大学 | Dirt retention prevention draught fan impeller with reverse-drop-shaped blades |
| CN105275873A (en) * | 2015-10-27 | 2016-01-27 | 上海华鼓鼓风机有限公司 | Three-dimensional flow closed type casting impeller used for low-speed running air blower |
| CN106122084A (en) * | 2016-08-29 | 2016-11-16 | 重庆水泵厂有限责任公司 | A kind of low specific speed impeller structure and processing method thereof |
| CN109965821A (en) * | 2017-12-28 | 2019-07-05 | 宁波方太厨具有限公司 | A kind of cleaning machine |
| CN109965821B (en) * | 2017-12-28 | 2021-10-29 | 宁波方太厨具有限公司 | Cleaning machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |