CN202316142U - Center barrel of natural ventilation type cyclone separator - Google Patents
Center barrel of natural ventilation type cyclone separator Download PDFInfo
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- CN202316142U CN202316142U CN2011204658549U CN201120465854U CN202316142U CN 202316142 U CN202316142 U CN 202316142U CN 2011204658549 U CN2011204658549 U CN 2011204658549U CN 201120465854 U CN201120465854 U CN 201120465854U CN 202316142 U CN202316142 U CN 202316142U
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- barrel
- cyclone separator
- tube wall
- center
- hollow cavity
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Abstract
The utility model discloses a center barrel of a natural ventilation type cyclone separator. The center barrel comprises a barrel body; the upper part of the barrel body is connected with a cylindrical barrel body of a cyclone separator; a hollow cavity is formed on the barrel wall of the barrel body; the lower part of the hollow cavity is connected with an air inlet pipe; and the upper part of the hollow cavity is connected with an air outlet pipe. Air enters the air inlet pipe and then enters the hollow cavity formed on the center barrel; and after exchanging heat with the center barrel, the air is discharged into the atmosphere from the air outlet pipe under lifting force generated by density change, so that cold air continuously flows through the hollow cavity, and the temperature of the metal barrel wall of the center barrel is reduced. Protection layers made of anti-abrasion and fireproof materials are arranged on the outer side of the outer barrel wall and the inner side of the inner barrel wall, so that the anti-abrasion performance of the barrel wall is enhanced. The center barrel is easy to process and low in manufacturing cost, has high strength, has performance of high-temperature resistant and anti-abrasion, can not be deformed and is difficult to damage; the service life of the center barrel is prolonged greatly; the using performance of the separator is further stabilized; and the service life of the separator is further prolonged.
Description
Technical field
The utility model belongs to CFBB with flue gas gas solid separation component technology field, relates in particular to a kind of cyclone separator central tube that is used for CFBB.
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 through 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 is as shown in Figure 1, and 1 is smoke inlet among the figure, and 2 is central tube, and its top is exhanst gas outlet, and 3 is cylindrical drum, and 4 is the ash outlet, and 5 is funneling cone barrel cylindrical shell.The operation principle of cyclone separator is to get into cylindrical drum 3 from the mixed flue gas that contains uncombusted coal particle dust that boiler furnace comes out by smoke inlet 1 tangential; The mixed flue gas that under centrifugal action, contains uncombusted coal particle forms the eddy current of rotation in cyclone separator; Major part contains uncombusted coal particle dust and under centrifugal force and gravity effect, separates to fall with flue gas and get into ash outlet 4; Again send burner hearth back to through material-returning device, realize the circulating combustion of fuel; Cleaner flue gas gets into 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 from mixed flue gas, the separating as much as possible that contains uncombusted coal particle.At present, the service life of cyclone separator of circulating fluidized bed boiler central tube is shorter, usually in 2～3 years; Need often to change; Its main cause is that central tube is in the high temperature of 850 ℃～1050 ℃ of environment and the environment with corrosive gas, to work, and the granule density of carrying secretly in the flue gas is high, flow velocity is fast, serious wear; Finally cause central tube generation permanent deformation under the long-term operation mechanism; Central tube after the distortion not only influences the separative efficiency of cyclone separator, but also influences boiler load, increases the wear extent of back-end ductwork and the burden of deduster simultaneously.Generally, boiler can not move after central tube damaged needs to change, because central tube needs to shut down when changing; Bring more inconvenience to production, and dismounting is complicated in the replacing process, the effort of taking a lot of work; Time between overhauls(TBO) is long, investment is big, and construction belongs to high-risk operations.Because the cost of central tube is higher, often changes central tube production cost is increased simultaneously, in addition, after central tube surface abrasion and high temperature deformation, also very easily influence the overall performance and the service life of separator.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of natural ventilation type cyclone separator central tube that can reduce the metal temperature of central tube and then improve self hardness, reduce thermal deformation, increase the service life is provided.
The utility model for realizing the technical scheme that above-mentioned purpose adopted is:
A kind of natural ventilation type cyclone separator central tube; Comprise cylindrical shell, the top of cylindrical shell is connected with the cylindrical drum of cyclone separator, it is characterized in that: on the barrel of said cylindrical shell cavity is set; The cavity bottom is connected with air inlet pipe, and cyclone separator housing and atmosphere are stretched out in the air inlet pipe lower end; Cavity top is connected with escape pipe, and the outer and atmosphere of body of heater is stretched out in the escape pipe upper end, and the outside of the outer tube wall of cylindrical shell and the inboard of inner tube wall are provided with overcoat respectively.
Processing and fabricating for ease; The described cavity of the utility model is processed column annular inner tube wall and the annular outer tube wall of column and upper annular plate and lower annular plate by sheet material and is formed; Upper annular plate is connected with the upper end of inner tube wall and outer tube wall, and escape pipe is connected on the through hole of upper annular plate; The lower ends of lower annular plate and inner tube wall and outer tube wall connects, and air inlet pipe is connected on the through hole of lower annular plate.
For the ease of the fixed protection layer, make overcoat more firm, the outside of the described outer tube wall of the utility model and the inboard of inner tube wall are connected with pin.
The natural ventilation type cyclone separator central tube of the utility model is provided with cavity on the barrel of central tube cylindrical shell, the cavity bottom is connected with air inlet pipe; Cyclone separator housing and atmosphere are stretched out in the air inlet pipe lower end, and cavity top is connected with escape pipe, and the outer and atmosphere of body of heater is stretched out in the escape pipe upper end; Air gets into from air inlet pipe, gets into then in the cavity that is provided with on the central tube, and air is behind the heat of switching centre's tube; Because variable density produces the lift that rises; Be discharged to the atmosphere from escape pipe, make the cold air of constantly flowing through in the cavity, reduced the temperature of central tube metal barrel.Also be provided with overcoat wear-resisting, refractory material in the outside of the outer tube wall of cylindrical shell and the inboard of inner tube wall, increased the wearability of barrel.The described structure of the utility model is easy to processing, low cost of manufacture, and intensity is high; High temperature resistant, indeformable, resistance to wear, be not prone to damage; Increased substantially the service life of central tube, make the serviceability of separator further stable, the service life of further having improved separator.
Description of drawings
Fig. 1 is the sketch map of prior art cyclone separator.
Fig. 2 is that the master of the utility model natural ventilation type cyclone separator central tube looks sketch map.
Fig. 3 is the A-A cross-sectional schematic among Fig. 2.
Fig. 4 is that the master that the cyclone separator of the utility model natural ventilation type cyclone separator central tube is installed looks sketch map.
Fig. 5 is the schematic top plan view that the cyclone separator of the utility model natural ventilation type cyclone separator central tube 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-air inlet pipe, 7-cavity, 8-escape pipe.
The specific embodiment
Below through non-limiting embodiment and combine accompanying drawing that the utility model is done further explanation.
Fig. 2 to Fig. 5 is the sketch map of a kind of specific embodiment of the utility model natural ventilation type cyclone separator central tube; Comprise cylindrical shell; The top of cylindrical shell is connected with the cylindrical drum of cyclone separator 3, and cavity 7 is set on the barrel of cylindrical shell, and cavity 7 bottoms are connected with air inlet pipe 6; Cyclone separator housing and atmosphere are stretched out in air inlet pipe 6 lower ends; Cavity 7 tops are connected with escape pipe 8, and the outer and atmosphere of body of heater is stretched out in escape pipe 8 upper ends, and the outside of the outer tube wall of cylindrical shell and the inboard of inner tube wall are provided with overcoat respectively.Cavity 7 is processed column annular inner tube wall and the annular outer tube wall of column and upper annular plate and lower annular plate by sheet material and is formed, and upper annular plate is connected with the upper end of inner tube wall and outer tube wall, and escape pipe 8 is connected on the through hole of upper annular plate; The lower ends of lower annular plate and inner tube wall and outer tube wall connects, and air inlet pipe 6 is connected on the through hole of lower annular plate.The outside of outer tube wall and the inboard of inner tube wall are connected with pin.
More than cited embodiment only supply to understand the usefulness of 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 said 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 utility model.
Claims (3)
1. natural ventilation type cyclone separator central tube; Comprise cylindrical shell; The top of cylindrical shell is connected with the cylindrical drum of cyclone separator; It is characterized in that: on the barrel of said cylindrical shell cavity is set, the cavity bottom is connected with air inlet pipe, and cyclone separator housing and atmosphere are stretched out in the air inlet pipe lower end; Cavity top is connected with escape pipe, and the outer and atmosphere of body of heater is stretched out in the escape pipe upper end, and the outside of the outer tube wall of cylindrical shell and the inboard of inner tube wall are provided with overcoat respectively.
2. natural ventilation type cyclone separator central tube according to claim 1; It is characterized in that: described cavity is processed column annular inner tube wall and the annular outer tube wall of column and upper annular plate and lower annular plate by sheet material and is formed; Upper annular plate is connected with the upper end of inner tube wall and outer tube wall, and escape pipe is connected on the through hole of upper annular plate; The lower ends of lower annular plate and inner tube wall and outer tube wall connects, and air inlet pipe is connected on the through hole of lower annular plate.
3. natural ventilation type cyclone separator central tube according to claim 1 and 2 is characterized in that: the outside of described outer tube wall and the inboard of inner tube wall are connected with pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204658549U CN202316142U (en) | 2011-11-22 | 2011-11-22 | Center barrel of natural ventilation type cyclone separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204658549U CN202316142U (en) | 2011-11-22 | 2011-11-22 | Center barrel of natural ventilation type cyclone separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202316142U true CN202316142U (en) | 2012-07-11 |
Family
ID=46428142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204658549U Expired - Fee Related CN202316142U (en) | 2011-11-22 | 2011-11-22 | Center barrel of natural ventilation type cyclone separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202316142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180160A (en) * | 2015-08-26 | 2015-12-23 | 中国科学院工程热物理研究所 | Combustion device capable of reducing emissions of nitric oxides of circulating fluidized bed |
-
2011
- 2011-11-22 CN CN2011204658549U patent/CN202316142U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180160A (en) * | 2015-08-26 | 2015-12-23 | 中国科学院工程热物理研究所 | Combustion device capable of reducing emissions of nitric oxides of circulating fluidized bed |
| CN105180160B (en) * | 2015-08-26 | 2018-02-23 | 中国科学院工程热物理研究所 | Reduce the burner of nitrogen oxides in circulating fluid bed discharge |
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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: 20120711 Termination date: 20171122 |