CN101922461A - Double-impeller centrifugal blower - Google Patents
Double-impeller centrifugal blower Download PDFInfo
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- CN101922461A CN101922461A CN 201010131360 CN201010131360A CN101922461A CN 101922461 A CN101922461 A CN 101922461A CN 201010131360 CN201010131360 CN 201010131360 CN 201010131360 A CN201010131360 A CN 201010131360A CN 101922461 A CN101922461 A CN 101922461A
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- impeller
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- centrifugal blower
- impeller centrifugal
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Abstract
The invention provides a double-impeller centrifugal blower. A motor of the double-impeller centrifugal blower is connected with a speed increasing gear box through a diaphragm coupling, and a soft start mode is adopted; a rotor set of the double-impeller centrifugal blower comprises a secondary impeller and a balance disc, and the outlet angle of each blade in the impeller is 55-65 degrees; a casing is in a horizontally split type, an upper casing is provided with a balance gas connecting pipe, a single-suction air inlet is rectangular, and an air outlet is circular; and a sealing element of the double-impeller centrifugal blower comprises a spiral seal and an air seal. The blower of the invention has the advantages of small volume, light weight, high rotary speed, high efficiency and the like.
Description
Technical field
The present invention relates to centrifugal blower, especially refer to have small volume, high efficiency double-impeller centrifugal blower.
Background technique
Centrifugal blower is mainly used in petrochemical industry, metallurgical industry, refrigeration industry, natural gas transport industry, constitute centrifugal blower primary clustering motor, casing, rotor set (impeller, main shaft, axle sleeve etc.), bearing housing, Sealing, intake grill, exhaust outlet or the like are arranged.Existing centrifugal blower mostly is single-stage, and as common binary fan impeller, for another the disclosed single-stage 3 d impeller of the specification of number of patent application 98245322.1, its machine air blast efficient of making is low, and wind pressure ratio is little, and flow losses are big.Slow-revving multistage blowers are also arranged, as being that disclosed multistage centrifugal blower fan and number of patent application are 200920063021.2 the disclosed multistage 3 d impeller blower fan of specification in 01204894.1 the specification at number of patent application, its inter-stage transmission efficiency is on the low side, the blower fan overall volume of making is big, weight is big, rotating speed is little, and efficient is low.
Summary of the invention
Goal of the invention: provide a kind of smaller size smaller that has, the high efficiency double-impeller centrifugal blower of higher voltage rise.
Technological scheme: the present invention adopts following scheme to realize purpose of the present invention:
Motor with after the speed reducer that has step-up gear links to each other, connects rotor set by diaphragm coupling again; Rotor set comprises sencond stage impeller and a Balance disc, and the exit angle of blade is 55-65 ° in the impeller; Casing is the horizonally split formula, and single suction is gone into intake grill, and intake grill is a rectangle, and exhaust outlet is circular; Its Sealing contains oil sealing and air seal set.
Among the present invention, motor is connected with soft starting device, and step-up gear can significantly improve the rotating speed of rotor set.Upper casing is provided with balance gas connecting tube, to reduce end thrust.
In the rotor set, the material of impeller is that the SAF2507 of anti-corrosion and high strength forges stainless steel.The angle of its outlet has guaranteed higher stage efficiency.The material of main shaft is the SAF2205 forged steel, intensity height, toughness height.The material of Balance disc is the SAF2507 stainless steel, and it makes time spent minimizing main shaft balance thrust.
Bearing contains bearing housing, spring bearing and thrust bearing, and bearing is placed in the bearing housing, and bearing housing relies on and connects the Lubricating-oil Station lubricating bearings, and guaranteeing has good cooling and lubricated under the high rotating speed of machine.The oil sealing that Sealing comprises is spiral sealing, and the screw thread that is mated is arranged on the main shaft; Other has the sealing gland of inflated with nitrogen, and the air pressure of nitrogen is higher than casing internal pressure 500mm water column.
Beneficial effect: double-impeller centrifugal blower of the present invention, with traditional multistage low speed blower comparison, have the advantages that volume is little, in light weight, rotating speed is high, voltage rise is high, efficient is high, and parts are corrosion-resistant, lubricated and good seal performance, the life-span is permanent.
Description of drawings
Fig. 1 is a generalized section of the present invention's rotor set of amplifying;
Fig. 2 is a general assembly schematic representation of the present invention.
Embodiment
Make two impellers 6 with the SAF2507 stainless steel, the exit angle of its blade 7 is 60 °.The tangent line at place, blade summit and the angle of the impeller tangent line of locating by the blade summit are called exit angle.
Make main shaft 1 with the SAF2205 forged steel, leave the keyway that coupling 16 is installed on the main shaft 1, also leave the screw thread 2 that cooperates with its oil-sealing arrangement on the main shaft 1, the main shaft diameter of axle 10 of impeller installation place has the diameter of axle 11 that caves inward greater than the main shaft diameter of axle 12 of both sides on the main shaft 1 on the main shaft 1; Make the Balance disc 8 of corresponding specification with the SAF2507 stainless steel, or also select corresponding axle sleeve 5, round nut 3, locked spacer 4, key 9 for use, impeller 6, Balance disc 8, axle sleeve 5 are installed to the rotor set 19 that forms on the main shaft 1 as shown in Figure 1.
That selects appropriate size for use makes bearing, thrust bearing, puts into bearing housing 17, and bearing housing 17 connects Lubricating-oil Station.Choose the casing 18 of steel plate production technique split type again, this casing 18 contains single suction and goes into intake grill 22, and intake grill 22 is a rectangle, and exhaust outlet 21 is circular.Main shaft 1 two ends are selected the oil-sealing arrangement that contains spiral sealing for use and are contained the Sealing 20 of the air seal set of inflated with nitrogen.
Select the motor 13 of appropriate size at last for use, have the speed reducer 15 of step-up gear, diaphragm coupling 14.According to the component installation position shown in Figure 2 and the order of connection each parts are installed successively, and are carried out the cooperation, lubricated of each connected element, double-impeller centrifugal blower of the present invention.
Claims (9)
1. double-impeller centrifugal blower, comprise motor (13), casing (18), rotor set (19), bearing housing (17), Sealing (20), intake grill (22), exhaust outlet (21), rotor set (19) contains impeller (6), main shaft (1), impeller (6) contains leaf (7) sheet, wheel disc, it is characterized in that: motor (13) with after the speed reducer that has step-up gear (15) links to each other, connects rotor set (19) by diaphragm coupling (14) again; Its rotor set (19) comprises a sencond stage impeller (6) and a Balance disc (8), and the exit angle of blade (7) is 55-65 °; Casing (18) is the horizonally split formula, and single suction is gone into intake grill (22), and intake grill (22) is a rectangle, and exhaust outlet (21) is circular; Its Sealing (20) contains oil sealing and air seal set.
2. double-impeller centrifugal blower according to claim 1 is characterized in that: motor (13) is connected with soft starting device.
3. double-impeller centrifugal blower according to claim 1 is characterized in that: upper casing is provided with balance gas connecting tube.
4. double-impeller centrifugal blower according to claim 1 is characterized in that: the material of impeller (6) is the SAF2507 stainless steel.
5. double-impeller centrifugal blower according to claim 1 is characterized in that: the material of main shaft (1) is the SAF2205 forged steel.
6. double-impeller centrifugal blower according to claim 1 is characterized in that: the material of Balance disc (8) is the SAF2507 stainless steel.
7. double-impeller centrifugal blower according to claim 1 is characterized in that: oil sealing is spiral sealing, and the screw thread on the main shaft (2) is mated.
8. double-impeller centrifugal blower according to claim 1 is characterized in that: sealing gland is the nitrogen sealing gland, and the air pressure of nitrogen is higher than casing internal pressure 500mm water column.
9. double-impeller centrifugal blower according to claim 1 is characterized in that: bearing is placed in the bearing housing (17), and bearing housing (17) connects Lubricating-oil Station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010131360 CN101922461A (en) | 2010-03-24 | 2010-03-24 | Double-impeller centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010131360 CN101922461A (en) | 2010-03-24 | 2010-03-24 | Double-impeller centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101922461A true CN101922461A (en) | 2010-12-22 |
Family
ID=43337589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010131360 Pending CN101922461A (en) | 2010-03-24 | 2010-03-24 | Double-impeller centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101922461A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809485A (en) * | 2012-07-16 | 2012-12-05 | 西安交通大学 | Test bed for radial elastic foil gas bearings of integrated high-speed coupling |
| CN102954011A (en) * | 2011-08-19 | 2013-03-06 | 上海通用风机股份有限公司 | D-type coupling driving-belt high-strength integral pedestal fan |
| CN110410350A (en) * | 2019-09-04 | 2019-11-05 | 中国原子能科学研究院 | A kind of blower for the heating of reactor primary tank |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001012388A (en) * | 1999-06-28 | 2001-01-16 | Hitachi Ltd | Centrifugal compressor |
| CN1594891A (en) * | 2004-07-14 | 2005-03-16 | 沈阳东方钛业有限公司 | Titanium fan |
| US6935838B1 (en) * | 2003-03-19 | 2005-08-30 | Hi-Bar Blowers, Inc. | High pressure multi-stage centrifugal blower |
| CN1710285A (en) * | 2005-06-29 | 2005-12-21 | 湖北双剑鼓风机制造有限公司 | Sulfuric acid centrifugal blower for plateau |
| CN201027698Y (en) * | 2007-04-12 | 2008-02-27 | 湖北湖风机械制造有限公司 | Two-stage gas-making centrifugal blower |
| CN201184311Y (en) * | 2008-04-24 | 2009-01-21 | 湖北省风机厂有限公司 | Seal device of circulation blower fan |
| CN201196154Y (en) * | 2008-04-28 | 2009-02-18 | 武汉鼓风机有限公司 | Diesel engine-driving combination type high speed blowing machine |
| CN201650801U (en) * | 2010-03-25 | 2010-11-24 | 南通大通宝富风机有限公司 | Double-impeller centrifugal blower |
-
2010
- 2010-03-24 CN CN 201010131360 patent/CN101922461A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001012388A (en) * | 1999-06-28 | 2001-01-16 | Hitachi Ltd | Centrifugal compressor |
| US6935838B1 (en) * | 2003-03-19 | 2005-08-30 | Hi-Bar Blowers, Inc. | High pressure multi-stage centrifugal blower |
| CN1594891A (en) * | 2004-07-14 | 2005-03-16 | 沈阳东方钛业有限公司 | Titanium fan |
| CN1710285A (en) * | 2005-06-29 | 2005-12-21 | 湖北双剑鼓风机制造有限公司 | Sulfuric acid centrifugal blower for plateau |
| CN201027698Y (en) * | 2007-04-12 | 2008-02-27 | 湖北湖风机械制造有限公司 | Two-stage gas-making centrifugal blower |
| CN201184311Y (en) * | 2008-04-24 | 2009-01-21 | 湖北省风机厂有限公司 | Seal device of circulation blower fan |
| CN201196154Y (en) * | 2008-04-28 | 2009-02-18 | 武汉鼓风机有限公司 | Diesel engine-driving combination type high speed blowing machine |
| CN201650801U (en) * | 2010-03-25 | 2010-11-24 | 南通大通宝富风机有限公司 | Double-impeller centrifugal blower |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954011A (en) * | 2011-08-19 | 2013-03-06 | 上海通用风机股份有限公司 | D-type coupling driving-belt high-strength integral pedestal fan |
| CN102809485A (en) * | 2012-07-16 | 2012-12-05 | 西安交通大学 | Test bed for radial elastic foil gas bearings of integrated high-speed coupling |
| CN110410350A (en) * | 2019-09-04 | 2019-11-05 | 中国原子能科学研究院 | A kind of blower for the heating of reactor primary tank |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101222 |