CN102477998A - High-pressure high-flow flue gas desulfurization centrifugal draught fan - Google Patents
High-pressure high-flow flue gas desulfurization centrifugal draught fan Download PDFInfo
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- CN102477998A CN102477998A CN2010105822235A CN201010582223A CN102477998A CN 102477998 A CN102477998 A CN 102477998A CN 2010105822235 A CN2010105822235 A CN 2010105822235A CN 201010582223 A CN201010582223 A CN 201010582223A CN 102477998 A CN102477998 A CN 102477998A
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- sliding bearing
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Abstract
The invention relates to the field of centrifugal draught fans, and in particular relates to a high-pressure high-flow flue gas desulfurization centrifugal draught fan. A supporting sliding bearing, an impeller, a lug plate and a thrust sliding bearing are sleeved on a spindle from left to right in turn; a shaft disc is welded on the spindle and is fixedly connected with a middle disc of the impeller and the lug plate through bolts; a left oil slinger and a right oil slinger are arranged in the supporting sliding bearing and the thrust sliding bearing respectively and are sleeved on the spindle; the supporting sliding bearing is assembled with a supporting bearing box body by means of a spherical surface; the thrust sliding bearing is assembled with a thrust bearing box body by means of a spherical surface; the impeller is arranged in the shell, collectors are sleeved at inlets on two sides of the impeller; and the collectors are fixed on two side plates of the shell. Due to the adoption of the technical scheme, whole weight and rotational inertia of a rotating part are greatly reduced, the fan can be only needed to be directly started by a motor without a hydraulic coupler, a linear velocity of an oil film is reduced, an oil film contact area between the spindle and the bearing is increased, the bearing capacity is improved, and the draught fan has the characteristics of small device number and light weight.
Description
Technical field
The present invention relates to the centrifugal induced draught fan field, is a kind of high-pressure high-flow flue gas desulfurization centrifugal induced draught fan.
Background technique
Along with the reconstruction of all kinds of coal fired boilers and the demand of enlarging in the enterprises such as domestic big section steel works, power plant, the trend development of the operating mode forward high pressure of the employed dedusting centrifugal induced draught fan of flue gas dust collecting system, big flow.At present, in most cases all be with the serial blower fan of double suction dual-support structure main separation object as this type of dedusting centrifugal induced draught fan.What this series blower fan adopted is the bigger wing blades of width-diameter ratio, and its strength stress is had relatively high expectations, when impeller diameter during greater than 2.8 meters; The rotating speed of blower fan can only be controlled at below 730 rev/mins; And what main shaft adopted is solid shaft, is equipped with the large cast steel reel and connects impeller, causes that rotatable parts weight is big, rotary inertia is big; Thereby blower fan must could accomplish cold start by supporting hydraulic couplers, and need join Lubricating-oil Station the sliding bearing of blower fan is carried out pressure lubrication.
For this reason, there is following present situation in the serial dedusting centrifugal induced draught fan of double suction dual-support structure: rotating speed is low, and impeller diameter is big, makes that fan starting moment is big, needs supporting fluid coupling variable speed to solve the cold start problem of blower fan; Rotatable parts weight is big, and the bearing capacity of bearing exceeds the service condition of selflubricating, must adopt Lubricating-oil Station to implement pressure lubrication.
Summary of the invention
The objective of the invention is to provide that a kind of cost is low, plane No. is little, be prone to start, the high-pressure high-flow flue gas desulfurization centrifugal induced draught fan of selflubricating.
Technological scheme of the present invention is: support sliding bearing, impeller, benefit plate, plain thrust bearing are sleeved on the main shaft successively from left to right; Reel is welded on the main shaft, and adopts bolt to be connected with impeller mid-game and benefit plate and fix; Left side disc and right disc place in support sliding bearing and the plain thrust bearing respectively and are sleeved on the main shaft; Support sliding bearing and rely on sphere and spring bearing casing to attach together, plain thrust bearing also relies on sphere and thrust bearing casing to attach together; Impeller is contained in the casing, and its two side entrance is set with slip ring, and slip ring is fixed on the casing biside plate.
One section empennage of airfoil vanes outlet end design along the circumferential direction is designed to laciniation in the impeller mid-game, and reel is designed to steel plate structure and is welded on the main shaft, and main shaft is designed to hollow-core construction.
Owing to adopted technique scheme, rotatable parts overall weight and rotary inertia are able to reduce significantly, and blower fan can only need motor directly to start and need not hydraulic couplers; Reduced the linear velocity of oil film; Increase the oil film area of contact of main shaft and bearing, improved bearing capacity, had little, the lightweight characteristics of plane No.; And adopt disc at box house from behavior bearing fuel feeding, thereby cancelled Lubricating-oil Station.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 1.
Fig. 4 is the blade profile schematic representation.
Fig. 5 is a mid-game saw tooth structure schematic representation.
In the drawings: 1, casing; 2, reel; 3, main shaft; 4, spring bearing casing; 5, support sliding bearing; 6, left disc; 7, right disc; 8, plain thrust bearing; 9, thrust bearing casing; 10, slip ring; 11, bolt; 12, mend plate; 13, mid-game; 14, airfoil vanes; 15, impeller; 16, side plate; 17, empennage; 18, sphere; 19, sphere.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
In Fig. 1, a kind of high-pressure high-flow dedusting centrifugal induced draught fan, support sliding bearing 5, impeller 15, reel 2, benefit plate 12, plain thrust bearing 8 are sleeved on the main shaft 3 successively from left to right; Reel 2 is welded on the main shaft 3, and adopts bolts 11 to be connected with mid-game 13 and benefit plate 12 and fix; Left side disc 6 places in support sliding bearing 5 and the plain thrust bearing 8 respectively with right disc 7 and is sleeved on the main shaft 3; Support sliding bearing 5 and rely on sphere 18 and spring bearing casing 4 to attach together, plain thrust bearing 8 relies on sphere 19 and thrust bearing casing 9 to attach together; Impeller is contained in the casing 1, and its two side entrance is set with slip ring 10; Slip ring 10 is fixed on the casing biside plate 16.
The specific embodiment of the invention is: with one section empennage 17 of airfoil vanes 14 outlet end design, and the width-diameter ratio value of dwindling impeller; Along the circumferential direction be designed to laciniation in mid-game 13; Reel 2 is designed to steel plate structure and is welded on the main shaft 3; Main shaft 3 is designed to hollow-core construction; Sliding bearing is supported 5 be designed to the structure of big width-diameter ratio, adopt disc 6 and disc 7 from behavior bearing fuel feeding with plain thrust bearing 8.
The present invention is one section empennage of airfoil vanes outlet end design, in order to improving the pressure coefficient of impeller, and the width-diameter ratio value of dwindling impeller, strengthens the design speed (960rpm) of blower fan simultaneously, realized reducing the purpose of impeller diameter; Along the circumferential direction be designed to laciniation in impeller 15 mid-games; Reel 2 is designed to steel plate structure and is welded on the main shaft; Reduced the large-scale reel weight of Cast Steel, main shaft is designed to hollow-core construction, therefore; Rotatable parts overall weight and rotary inertia are able to reduce significantly, and blower fan can only need motor directly to start and need not hydraulic couplers; Sliding bearing is designed to the structure of big width-diameter ratio; Reduce the linear velocity of oil film, increased the oil film area of contact of main shaft and bearing, improved bearing capacity; Adopt simultaneously disc at box house from behavior bearing fuel feeding, thereby need not the Lubricating-oil Station pressure lubrication.
Claims (4)
1. high-pressure high-flow flue gas desulfurization centrifugal induced draught fan is made up of casing (1), reel (2), main shaft (3), spring bearing casing (4), support sliding bearing (5), left disc (6), right disc (7), plain thrust bearing (8), thrust bearing casing (9), slip ring (10), bolt (11), airfoil vanes (14), impeller (15), side plate (16), empennage (17); It is characterized in that supporting sliding bearing (5), impeller (15), reel (2), mend plate (12), plain thrust bearing (8) is sleeved on the main shaft (3) successively from left to right; Reel (2) is welded on the main shaft (3), and adopts bolt (11) to be connected with mid-game (13) and benefit plate (12) and fix; Left side disc (6) and right disc (7) place in support sliding bearing (5) and the plain thrust bearing (8) respectively and are sleeved on the main shaft (3); Support sliding bearing (5) and rely on sphere (18) and spring bearing casing (4) to attach together, plain thrust bearing (8) relies on sphere (19) and thrust bearing casing (9) to attach together; Impeller is contained in the casing (1), and its two side entrance is set with slip ring (10); Slip ring (10) is fixed on the casing biside plate (16).
2. high-pressure high-flow flue gas desulfurization centrifugal induced draught fan according to claim 1 is characterized in that one section empennage of airfoil vanes (14) outlet end design.
3. high-pressure high-flow flue gas desulfurization centrifugal induced draught fan according to claim 1 is characterized in that along the circumferential direction being designed to laciniation in impeller (15) mid-game.
4. high-pressure high-flow flue gas desulfurization centrifugal induced draught fan according to claim 1 is characterized in that main shaft (3) is designed to hollow-core construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105822235A CN102477998A (en) | 2010-11-30 | 2010-11-30 | High-pressure high-flow flue gas desulfurization centrifugal draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105822235A CN102477998A (en) | 2010-11-30 | 2010-11-30 | High-pressure high-flow flue gas desulfurization centrifugal draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102477998A true CN102477998A (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105822235A Pending CN102477998A (en) | 2010-11-30 | 2010-11-30 | High-pressure high-flow flue gas desulfurization centrifugal draught fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100862A (en) * | 2016-02-23 | 2017-08-29 | 宝钢特钢有限公司 | large centrifugal fan |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031852U (en) * | 1988-01-26 | 1989-02-01 | 湘潭南方空调环保技术开发公司 | Wing type energy-saving double-suction centrifugal fan |
| CN2690636Y (en) * | 2004-04-14 | 2005-04-06 | 天津市通风机厂 | Hollow main shaft double suction F type centirfugal fan |
| CN2799927Y (en) * | 2005-06-14 | 2006-07-26 | 南通金通灵风机有限公司 | Central disc of impeller |
| CN201377436Y (en) * | 2009-03-31 | 2010-01-06 | 长沙水泵厂有限公司 | Structure for double-suction multistage horizontal split pump |
| EP1924772B1 (en) * | 2005-09-13 | 2010-05-19 | Trane International Inc. | Centrifugal blower for air handling equipment |
| CN201865930U (en) * | 2010-11-30 | 2011-06-15 | 湖北双剑鼓风机制造有限公司 | High-pressure large-flow smoke-gas vulcanizing centrifugal draft fan |
-
2010
- 2010-11-30 CN CN2010105822235A patent/CN102477998A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031852U (en) * | 1988-01-26 | 1989-02-01 | 湘潭南方空调环保技术开发公司 | Wing type energy-saving double-suction centrifugal fan |
| CN2690636Y (en) * | 2004-04-14 | 2005-04-06 | 天津市通风机厂 | Hollow main shaft double suction F type centirfugal fan |
| CN2799927Y (en) * | 2005-06-14 | 2006-07-26 | 南通金通灵风机有限公司 | Central disc of impeller |
| EP1924772B1 (en) * | 2005-09-13 | 2010-05-19 | Trane International Inc. | Centrifugal blower for air handling equipment |
| CN201377436Y (en) * | 2009-03-31 | 2010-01-06 | 长沙水泵厂有限公司 | Structure for double-suction multistage horizontal split pump |
| CN201865930U (en) * | 2010-11-30 | 2011-06-15 | 湖北双剑鼓风机制造有限公司 | High-pressure large-flow smoke-gas vulcanizing centrifugal draft fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100862A (en) * | 2016-02-23 | 2017-08-29 | 宝钢特钢有限公司 | large centrifugal fan |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 432721 Guangshui economic and Technological Development Zone, Hubei Applicant after: Hubei Shuangjian Blower Production Co., Ltd. Address before: 432721 Hubei city of Guangshui Province Economic and Technological Development Zone (Hubei Shuangjian blower manufacturing Co. Ltd.) Applicant before: Hubei Shuangjian Blower Production Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHUANGJIAN BLOWER MFG. CO., LTD., HUBEI TO: HUBEI SHUANGJIAN BLOWER PRODUCTION CO., LTD. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120530 |