CN1206458C - Air blower - Google Patents
Air blower Download PDFInfo
- Publication number
- CN1206458C CN1206458C CN02133790.XA CN02133790A CN1206458C CN 1206458 C CN1206458 C CN 1206458C CN 02133790 A CN02133790 A CN 02133790A CN 1206458 C CN1206458 C CN 1206458C
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- Prior art keywords
- impeller
- blower
- casing
- bearing
- sealing
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Abstract
The present invention belongs to the class of mechanical engineering, particularly to a blower for the fume of a converter. The present invention is mainly composed of a blower housing, an impeller, a rotor, a bearing box and a sealing device, wherein the blower housing is in a lath welded structure, and the blower housing is connected with an air inlet chamber through a shared lateral plate. The impeller is of a double-layer long and short blade type, and long blades, short blades, an impeller cover and an impeller disc assembly are welded into one whole called the impeller. The impeller is sheathed on a main shaft to form a rotating part called the rotor after being processed by welding. The blower is driven in a double-support F mode, and both ends of the main shaft are supported by the bearing box. The shaft ends of both sides of the blower housing are provided with a carbon-graphite ring labyrinth-sealed and nitrogen-sealed structure, which can prevent gas leakage. The bearing box is a self-aligning spherical sliding bearing; a bearing shell and a box body are tightly combined together, the shaft is additionally provided with an oil deflector ring one the basis of the sparse tooth sealing of an end cover. The sealing cover is provided with an oil return groove, which can ensure that lubricating oil does not leak. The blower has the advantages of good aerodynamic performance, wide operating range, high safety and stability, high efficiency and long service life.
Description
Technical field
The invention belongs to mechanical engineering, the blower that particularly a kind of converter gas uses.
Background technique
Pneumatic steelmaking is the main technique of world today's steel-making, and converter produces when blowing and contains a large amount of CO, CO
2, high temperature flue gas such as brown iron oxide, its smoke discharge amount accounts for 15% of whole iron and steel enterprise, in order to prevent to pollute, the protection environment needs carry out purified treatment and reclaim coal gas converter gas, air blower for coal gas to converter is the key equipment of this system.Coal gas of converter is after the udst separation of OG method, and its humidity is bigger, contains certain sticky dust and a small amount of SO
2So, can cause wearing and tearing and corrosion to blower fan, influence working life; Fan operation is after a period of time, the easy ash deposit and slag buildup of blade surface causes impeller unbalance, and vibration strengthens, the artificial deashing of having to stop production, this problem is each big steel mill ubiquity at home, about 6 hours consuming time of each deashing exchanging rotor, about 900 tons of the underproduction (in hundred tons of converter smelting cycle 40min), stopped production artificial deashing once by every month, 10800 tons of the year underproduction, the molten steel net profit is in 300 yuan/ton, and only this item list stove annual return is lost with regard to 3,240,000 yuan.Existing gas-blowing engine mainly is made of casing, impeller, rotor, bearing housing and seal arrangement, mostly be the turbine blower fan of cast iron structure at present, the structure heaviness, efficient is lower, in recent years also beginning to attempt Cai Yong Sheet gold solder access node structure manufactures, advantage is (being about cast iron structure weight 1/3) in light weight, intensity height, cost are low, but, air blower for coal gas to converter requires high low speed busy shift operation, because the tired impulsive load at alternating stress and impeller outlet place causes the impeller fatigue ruption, causes blower fan to go wrong in production run; Coal gas is inflammable and explosive harmful toxic gas, thereby the sealing of blower axle head, seems particularly important, and domestic most employing water jacket sealing forms a water ring, thereby plays seal action under centrifugal action; But volume is bigger, and complex structure is installed difficulty, increases the blower fan extra duty, and gas leak phenomenon usually leaks; Because coal gas is inflammable, explosive, poisonous gas, very easily blast under finite concentration naked light situation.Domestic gas fan only strengthens sound part gap, does also not enoughly aspect explosion-proof.
Summary of the invention
The object of the present invention is to provide a kind of pneumatic property good, range of operation is wide, safety and stability, high efficiency, the gas-blowing engine of long service life.
Purpose of the present invention realizes by following measure: blower mainly is made of casing, impeller, rotor, bearing housing and seal arrangement, and casing is a plate muscle welded structure, and casing links to each other by shared side plate with suction chamber; Impeller adopts double-deck slit type deviated splitter vane form, linear leaf, short blade and wheel cap, wheel disc assembly welding (being called impeller) in aggregates; Impeller assembly welding processing back cover installs to and forms rotatable parts (being called rotor) on the main shaft, blower fan adopts the transmission of dual-gripper F formula, the main shaft two ends are supported with bearing housing, and casing both sides axle head is equipped with the labyrinth seal of a kind of carbon graphite ring and adds nitrogen gas sealing structure, prevents gas leakage; Bearing housing adopts energy self-aligning spherical bearing, and bearing shell and casing are combined closely, and axle is added with flinger ring in addition on the thin tooth sealing of end cap basis, has oil-return groove on the sealing cover, guarantees that lubricant oil does not leak.Linear leaf tip radius r determines according to the stalling point of different blade profiles, crack clearance t=0.040～0.060r between deviated splitter vane, handing-over length h=0.060～0.096r; Inner flow passage carries out the surface treatment of ultra-smooth metallic coating, prevents ash deposit and slag buildup; 2～6 powerful water Flushing nozzles are housed respectively on impeller inlet and the casing spiral case, impeller is carried out periodic flushing, keep the impeller cleaning, guarantee the operation of blower safety and steady.
Blower of the present invention is because rational in infrastructure, and pneumatic property is good, and blower operates steadily, and the rotor long service life is widely used in the system that coal gas was handled and reclaimed to converter gas purification, can bring considerable economic.
Description of drawings
Fig. 1 is existing gas-blowing engine structural representation
Fig. 2 is existing gas-blowing engine structure A-A sectional view
Fig. 3 is existing gas-blowing engine water jacket sealed structural representation
Fig. 4 is existing gas-blowing engine bearing housing structure schematic representation
Fig. 5 is a blower fan structure schematic representation of the present invention
Fig. 6 is a blower fan structure B-B sectional view of the present invention
Fig. 7 is a blower carbon graphite nitrogen-sealed structural representation of the present invention
Fig. 8 is a blower bearing box structure schematic representation of the present invention
Among the figure, part 1 is a casing, part 2 suction chambers, part 3 shaft end seals, part 4 bearing housings, part 5 main shafts, part 6 blades, part 7 wheel caps, part 8 wheel discs, part 9 wheel hubs, part 10 linear leafs, part 11 short blades, part 12 Flushing nozzles, part 13 side plates, part 14 carbon graphite rings, part 15 flinger rings, part 16 sealing covers, part 17 oil-return grooves.
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is described further:
As shown in the figure, casing 1 links to each other by shared side plate 13 with suction chamber 2, casing 1 is a plate muscle welded structure, wheel disc 8 is welded on the wheel hub 9, linear leaf 10 tip radius are 600mm, crack clearance t=0.05*600=30mm, handing-over length h=0.08*600=48mm, linear leaf 10, short blade 11 and wheel cap 7, wheel disc 8 assembly weldings (being called impeller) in aggregates, impeller assembly welding processing back cover installs to and forms rotatable parts (being called rotor) on the main shaft 5, main shaft 5 two ends are supported with bearing housing 4, and 3 powerful water Flushing nozzles 12 are housed in the spiral case of casing 1, and 2 powerful water Flushing nozzles 12 are equipped with at the impeller inlet place.As protective layer, not only anticorrosion but also wear-resisting, the surface also is difficult for dust stratification at a kind of macromolecule ultra-smooth metallic coating belzona1341 product of impeller inner flow passage surface spraying; Shaft end seal 3 is equipped with in 1 liang of outside of casing respectively, and blower axle head sealing 3 adopts 14 labyrinth seals of carbon graphite ring to add the nitrogen sealing gland, and carbon graphite ring 14 remains seamless contact the, good airproof performance, compact structure with axle 5; Bearing housing 4 adopts energy self-aligning spherical bearing, and bearing shell and casing are combined closely, and axle 5 is added with flinger ring 15 in addition on the thin tooth sealing of end cap basis, has oil-return groove 17 on the sealing cover 16, guarantees that lubricant oil does not leak.
The pneumatic property of this blower is good, and range of operation is wide, safety and stability, efficient height, long service life.
Claims (4)
1. a blower is made of casing, impeller, rotor, bearing housing and seal arrangement, it is characterized in that casing is a plate muscle welded structure, and casing links to each other by shared side plate with suction chamber; Impeller adopts double-deck slit type deviated splitter vane form, and linear leaf, short blade and wheel cap, wheel disc assembly welding are in aggregates; Impeller assembly welding processing back cover installs to and forms rotatable parts on the main shaft; Blower fan adopts the transmission of dual-gripper F formula, and the main shaft two ends are supported with bearing housing, and casing both sides axle head is equipped with the labyrinth seal of a kind of carbon graphite ring and adds nitrogen gas sealing structure, prevents gas leakage; Bearing housing adopts energy self-aligning spherical bearing, and bearing shell and casing are combined closely, and axle is added with flinger ring in addition on the thin tooth sealing of end cap basis, has oil-return groove on the sealing cover, guarantees that lubricant oil does not leak.
2. a kind of blower as claimed in claim 1 is characterized in that linear leaf tip radius r determines according to the stalling point of different blade profiles, crack clearance t=0.040～0.060r between deviated splitter vane, handing-over length h=0.060～0.096r.
3. a kind of blower as claimed in claim 1 is characterized in that inner flow passage carries out the surface treatment of ultra-smooth metallic coating.
4. a kind of blower as claimed in claim 1 is characterized in that 2～6 powerful water Flushing nozzles are housed respectively on impeller inlet and the casing spiral case, and impeller is carried out periodic flushing, keeps the impeller cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02133790.XA CN1206458C (en) | 2002-09-20 | 2002-09-20 | Air blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02133790.XA CN1206458C (en) | 2002-09-20 | 2002-09-20 | Air blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1483941A CN1483941A (en) | 2004-03-24 |
| CN1206458C true CN1206458C (en) | 2005-06-15 |
Family
ID=34145676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02133790.XA Expired - Lifetime CN1206458C (en) | 2002-09-20 | 2002-09-20 | Air blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1206458C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922468A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Impeller of centrifugal fan |
| CN101922469A (en) * | 2010-03-24 | 2010-12-22 | 南通大通宝富风机有限公司 | Centrifuged fan |
| CN103410786B (en) * | 2013-08-22 | 2016-03-02 | 重庆江增船舶重工有限公司 | A kind of vapour compression machine compressor casing and processing method thereof |
| CN104197025B (en) * | 2014-08-27 | 2016-04-27 | 上海通用风机股份有限公司 | A kind of combination seal water-cooling bearing block of large fan |
| CN106065862B (en) * | 2016-07-26 | 2017-06-30 | 合肥通用机械研究院 | Vortex blower adopting welding process |
-
2002
- 2002-09-20 CN CN02133790.XA patent/CN1206458C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1483941A (en) | 2004-03-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201124 Address after: No.28 Shuguang Xili, Chaoyang District, Beijing 100028 Patentee after: China Metallurgical Industry Co.,Ltd. Address before: 400013 No. 1, Shuang Steel Road, Yuzhong District, Chongqing, China Patentee before: CISDI ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20050615 |
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| CX01 | Expiry of patent term |