CN201441951U - Eccentric center tube - Google Patents
Eccentric center tube Download PDFInfo
- Publication number
- CN201441951U CN201441951U CN2009200263213U CN200920026321U CN201441951U CN 201441951 U CN201441951 U CN 201441951U CN 2009200263213 U CN2009200263213 U CN 2009200263213U CN 200920026321 U CN200920026321 U CN 200920026321U CN 201441951 U CN201441951 U CN 201441951U
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- CN
- China
- Prior art keywords
- cyclone separator
- smoke
- separator
- segment
- tube body
- 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 - Fee Related
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Abstract
The utility model discloses an eccentric center tube, which comprises a tube body and a convex edge which is arranged on the upper portion of the tube body and can be connected with a cylindrical tube body of a cyclone separator, the tube body comprises an inlet segment, a transition segment and an outlet segment which are arranged from the bottom up, the center line of the outlet segment is concentric to that of the cyclone separator, the inlet segment is not arranged on the center of the cyclone separator, and is moved towards the direction far away from the inlet gas flow direction, smoke has a bigger circulating cross section when justly entering the separator, the volume of smoke and the quantity of materials are both continuously reduced during separating, then, the width of a smoke flow passage is also reduced, thereby getting an evener material concentration field, eccentric arrangement can further prevent high temperature smoke from directly flowing into the center tube in short circuit, and can greatly improve the separation efficiency of the separator, and the beneficial effects of the eccentric center tube are obvious.
Description
Technical field
The utility model belongs to the central tube of CFBB flue gas gas solid separation parts, particularly a kind of cyclone separator.
Background technology
Cyclone separator is the vitals of CFBB, it is that cylindrical shape, bottom are that the cylindrical shell and the central tube of funneling cone barrel formed by top mainly, central tube be arranged in cylindrical shell top, its top stretch out cylinder top by the fixed support sleeve be connected with the vertical shaft type flue, the bottom then inserts separator main body inner chamber burner hearth flue entrance below.Present normally used cyclone separator structure as shown in Figure 1,1 is smoke inlet among the figure, 2 is central tube, its top is exhanst gas outlet, 3 is cylindrical drum, 4 is ash outlet, 5 is funneling cone barrel cylindrical shell.The operation principle of cyclone separator is tangentially to enter cylindrical drum 3 from the mixed flue gas that contains uncombusted coal particle dust that boiler furnace comes out by smoke inlet 1, the mixed flue gas that contains uncombusted coal particle under centrifugal action forms the eddy current of rotation in cyclone separator, major part contains uncombusted coal particle dust and separates to fall with flue gas under centrifugal force and gravity effect and enter ash outlet 4, again send burner hearth back to by material-returning device, realize the circulating combustion of fuel; Cleaner flue gas enters central tube 2 after isolating dust from the bottom, and the exhanst gas outlet from central tube 2 tops leaves cyclone separator again, and cyclone separator is just separated most uncombusted coal particle dusts and flue gas like this.Thereby the height of cyclone separator separative efficiency will badly influence the efficiency of combustion and the smoke discharge amount of boiler.
The central tube 2 that is positioned at cyclone separator top is critical components of cyclone separator, its effect is to be designed to rational shape and size to improve cyclone separator gas solid separation efficient, makes dust the separating from mixed flue gas as much as possible that contains uncombusted coal particle.Existing cyclone separator of circulating fluidized bed boiler central tube all is a drum forms, has adherent layer owing to enter the flue gas that contains uncombusted coal particle dust of cyclone separator, and a lot of flue gases enter the central tube inlet with regard to short circuit before not carrying out gas solid separation, cause cyclone separator flue gas and the dust separation efficient that contains uncombusted coal particle not to reach good effect.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of eccentric central tube that can improve the cyclone separator separative efficiency is provided.
The technical scheme that the utility model is adopted for achieving the above object is:
A kind of eccentric central tube, comprise cylindrical shell and the flange that can be connected that is arranged at cylindrical shell top with the cylindrical drum of cyclone separator, it is characterized in that: described cylindrical shell is divided into inducer, changeover portion, outlet section from bottom to top, and the outlet section center line is concentric with the center line of cyclone separator; The center line of inducer center line and outlet section departs from.
Eccentric central tube of the present utility model, its outlet section center line is concentric with the center line of cyclone separator, and inducer is not arranged on the center of cyclone separator, but it is done certain skew to the direction that flows to away from inlet flue gas, after adopting this arranged off-centre, can make flue gas that big flow area is arranged when just entering separator, along with the carrying out that separates, exhaust gas volumn and inventory all constantly reduce, the flue gas flow channel width is also reducing thereupon, can obtain a material concentration field more uniformly like this; Arranged off-centre can prevent that also high-temperature flue gas direct short-circuit from central tube, can improve the separative efficiency of separator greatly, and its beneficial effect is conspicuous.
Description of drawings
Fig. 1 is the schematic diagram of prior art cyclone separator.
Fig. 2 is that the master of the eccentric central tube of the utility model looks schematic diagram.
Fig. 3 is the schematic top plan view of the eccentric central tube of the utility model.
Fig. 4 is that the master that the cyclone separator of the eccentric central tube of the utility model is installed looks schematic diagram.
Fig. 5 is the schematic top plan view that the cyclone separator of the eccentric central tube of the utility model is installed.
Among the figure: 1-smoke inlet, 2-central tube, 3-cylindrical drum, the outlet of 4-ash, the funneling cone barrel cylindrical shell of 5-, 6-flange, 21-outlet section, 22-changeover portion, 23-inducer.
The specific embodiment
Fig. 2 to Fig. 5 is the schematic diagram of a kind of specific embodiment of the eccentric central tube of the utility model, cylindrical shell that this off-centre central tube is a three-stage structure and the flange that can be connected that is arranged at cylindrical shell top with the cylindrical drum of cyclone separator, described cylindrical shell is divided into inducer, changeover portion, outlet section from bottom to top, the outlet section center line is concentric with the center line of cyclone separator, and the center line of inducer center line and outlet section departs from.With the employed eccentric central tube of CFBB is example, inducer diameter 1600mm, the big end 1600mm of changeover portion diameter, small end 1200mm, outlet section diameter 1200mm, and the center line of inducer center line and outlet section departs from 200mm.
More than cited embodiment only for the usefulness of understanding the utility model; be not to be restriction to the described technical scheme of the utility model; the those of ordinary skill in relevant field; on the basis of the described technical scheme of claim; can also make multiple variation or distortion, variation that all are equal to or distortion all should be encompassed within the claim protection domain of the present utility model.
Claims (1)
1. eccentric central tube, comprise cylindrical shell and the flange that can be connected that is arranged at cylindrical shell top with the cylindrical drum of cyclone separator, it is characterized in that: described cylindrical shell is divided into inducer, changeover portion, outlet section from bottom to top, and the outlet section center line is concentric with the center line of cyclone separator; The center line of inducer center line and outlet section departs from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200263213U CN201441951U (en) | 2009-05-27 | 2009-05-27 | Eccentric center tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200263213U CN201441951U (en) | 2009-05-27 | 2009-05-27 | Eccentric center tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201441951U true CN201441951U (en) | 2010-04-28 |
Family
ID=42546626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200263213U Expired - Fee Related CN201441951U (en) | 2009-05-27 | 2009-05-27 | Eccentric center tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201441951U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912828A (en) * | 2010-08-12 | 2010-12-15 | 陈远平 | Whirlwind-type separation device for conveying powder particle materials |
| CN104089281A (en) * | 2014-07-25 | 2014-10-08 | 中国华能集团清洁能源技术研究院有限公司 | Cyclone separator of circulating fluidized bed boiler with double eccentric central cylinders |
| CN108905568A (en) * | 2018-08-20 | 2018-11-30 | 山东省建设高压容器有限公司 | A kind of circulating fluidized bed boiler flue gas desulfuration and denitrification system and its remodeling method |
| CN112387434A (en) * | 2020-10-29 | 2021-02-23 | 西安热工研究院有限公司 | Cyclone separator suitable for boiler dust removal and feed back |
-
2009
- 2009-05-27 CN CN2009200263213U patent/CN201441951U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912828A (en) * | 2010-08-12 | 2010-12-15 | 陈远平 | Whirlwind-type separation device for conveying powder particle materials |
| CN104089281A (en) * | 2014-07-25 | 2014-10-08 | 中国华能集团清洁能源技术研究院有限公司 | Cyclone separator of circulating fluidized bed boiler with double eccentric central cylinders |
| CN108905568A (en) * | 2018-08-20 | 2018-11-30 | 山东省建设高压容器有限公司 | A kind of circulating fluidized bed boiler flue gas desulfuration and denitrification system and its remodeling method |
| CN112387434A (en) * | 2020-10-29 | 2021-02-23 | 西安热工研究院有限公司 | Cyclone separator suitable for boiler dust removal and feed back |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20180527 |