CN217274102U - Declination type large obtuse angle steering flue for circulating fluidized bed boiler - Google Patents
Declination type large obtuse angle steering flue for circulating fluidized bed boiler Download PDFInfo
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- CN217274102U CN217274102U CN202221156845.6U CN202221156845U CN217274102U CN 217274102 U CN217274102 U CN 217274102U CN 202221156845 U CN202221156845 U CN 202221156845U CN 217274102 U CN217274102 U CN 217274102U
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- guard plate
- backplate
- rigid coupling
- obtuse angle
- flue
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
A declination type large obtuse angle steering flue for a circulating fluidized bed boiler relates to the technical field of boilers. The utility model discloses a solve current flue dust and subside easily, influence the flue gas and flow, the wearing and tearing receive the hot side pipe, cause simultaneously that temperature measurement is inaccurate, take place the problem of tube explosion easily. The utility model discloses a top backplate, the apron plate, the backplate, end backplate, preceding inboard backplate, back inboard backplate and two curb plates, the vertical rigid coupling of apron plate is at cyclone flue gas outlet end's front side, the vertical rigid coupling of preceding inboard backplate is at cyclone flue gas outlet end's rear side, top backplate is by preceding to the setting of down sloping down after to, the front end of top backplate and the upper end rigid coupling of apron plate, the rear end of top backplate and the upper end rigid coupling of backplate, the vertical setting of backplate, end backplate is by preceding to the downside of down sloping setting at the top backplate after to, the front end of end backplate and the upper end rigid coupling of preceding inboard backplate, the rear end of end backplate and the upper end rigid coupling of the inboard backplate in back. The utility model is used for the boiler burning.
Description
Technical Field
The utility model relates to a boiler technical field, concretely relates to big obtuse angle of formula of having a down dip turns to flue for circulating fluidized bed boiler.
Background
And a connecting flue is arranged between the outlet of the separator of the circulating fluidized bed boiler and the tail vertical shaft steering chamber. The flue gas with high ash concentration at the outlet of the boiler furnace is changed into flue gas with low dust concentration after passing through the separator, and then enters the tail steering chamber through the connecting flue at the upper part of the separator.
The conventional connecting flue is in a horizontal form and has a 90-degree corner, dust in flue gas is partially settled at the bottom of the flue when the flue gas passes through the connecting flue, then accumulation is formed, the flow resistance of the flue gas and the power consumption of an induced draft fan are increased, and a thermocouple connected with a flue temperature measuring point can be buried when the dust accumulation is serious, so that the temperature measurement is inaccurate; when the flue gas passes through the 90-degree steering chamber, the flow field of a flue of a vertical shaft at the tail part is uneven, so that the pipe at the heating surface at the tail part is abraded to a certain degree, and the temperature of a medium at the tail part is subjected to certain thermal deviation, so that pipe explosion is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current flue dust and subside easily, influence the flue gas and flow, wearing and tearing receive the hot side pipe, cause simultaneously that temperature measurement is inaccurate, take place the problem of tube explosion easily, and then provide a big obtuse angle of formula of having a down dip and turn to the flue for circulating fluidized bed boiler.
The utility model discloses a solve the technical scheme that above-mentioned technical problem took and be:
the utility model provides a big obtuse angle of decline formula turns to flue for circulating fluidized bed boiler includes a backplate, the apron plate, the backplate, end backplate, preceding inboard backplate, back inboard backplate and two curb plates, the vertical rigid coupling of apron plate is in cyclone flue gas outlet end's front side, the vertical rigid coupling of preceding inboard backplate is at cyclone flue gas outlet end's rear side, top backplate is by preceding to down-dip setting after to, the front end of top backplate and the upper end rigid coupling of apron plate, the rear end of top backplate and the upper end rigid coupling of backplate, the vertical setting of backplate, end backplate is by preceding to down-dip setting in the downside of top backplate after to, the front end of end backplate and the upper end rigid coupling of preceding inboard backplate, the rear end of end backplate and the upper end rigid coupling of the inboard backplate in back, the curb plate rigid coupling is at top backplate respectively, the apron plate, the backplate, end backplate, preceding inboard backplate and the back both sides of back inboard.
Furthermore, the joints of the inner side walls between the top guard plate and the front guard plate, between the top guard plate and the rear guard plate, between the bottom guard plate and the front inner guard plate and between the bottom guard plate and the rear inner guard plate are all in smooth curve transition connection.
Furthermore, the included angle between the top guard plate and the horizontal plane is alpha, and the alpha is 2-10 degrees.
Further, the included angle alpha between the top protection plate and the horizontal plane is 5 degrees.
Furthermore, the included angle between the bottom guard plate and the horizontal plane is beta, and the beta is 2-10 degrees.
Furthermore, an included angle between the bottom protection plate and the horizontal plane is beta, and the beta is 5 degrees.
Further, the shape of curb plate is "eta" font, the curb plate includes preceding vertical section, transverse connection section and back vertical section, the upper end of preceding vertical section and the front end rigid coupling of transverse connection section, the rear end of transverse connection section and the upper end rigid coupling of back vertical section, the side of preceding backplate and the outside limit rigid coupling of preceding vertical section, the side of preceding inboard backplate and the inboard side rigid coupling of preceding vertical section, the side of top backplate and the outside limit rigid coupling of transverse connection section, the side of end backplate and the inboard side rigid coupling of transverse connection section, the side of back backplate and the outside limit rigid coupling of back vertical section, the side of back inboard backplate and the inboard side rigid coupling of back vertical section.
Furthermore, a tail heating screen is fixedly connected in the surrounding area of the rear guard plate, the rear inner side guard plate and the two side plates.
Furthermore, thermal expansion joints are arranged on the surrounding areas of the front guard plate, the front inner guard plate and the two side plates along the circumferential direction.
Further, the thermal expansion joint is arranged at the lower part of the surrounding area of the front guard plate, the front inner guard plate and the two side plates.
Compared with the prior art, the utility model the beneficial effect who contains is:
the utility model provides a declination type big obtuse angle steering flue for a circulating fluidized bed boiler, which adopts a declination type structure, can enhance the self-cleaning capability of flue gas and effectively reduce the dust deposition of the connecting flue; the steering chamber adopts a large obtuse angle, so that the flue gas uniformity of a tail vertical shaft can be improved, and the abrasion and thermal deviation conditions of a tail heating surface are reduced; in addition, the steel consumption can be properly reduced on the basis of the conventional structure, and the product cost is reduced.
The flue gas flows from an outlet at the top of the cyclone separator to the connecting flue, passes through the declination type large obtuse angle turning flue and then reaches the tail heating surface. When the flue gas flows through the declination type large obtuse angle steering flue, the flue gas is washed downwards at a certain flow velocity, so that the dust deposition at the bottom of the flue can be effectively cleaned, and the flue gas on the tail heating surface can be more uniform by the large obtuse angle steering, so that the service performance of the product is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the declination-type large obtuse angle turning flue for the circulating fluidized bed boiler comprises a top guard plate 1, a front guard plate 2, a rear guard plate 3, a bottom guard plate 4, a front inner guard plate 5, a rear inner guard plate 6 and two side plates, wherein the front guard plate 2 is vertically and fixedly connected to the front side of a flue gas outlet end of a cyclone separator 7, the front inner guard plate 5 is vertically and fixedly connected to the rear side of the flue gas outlet end of the cyclone separator 7, the top guard plate 1 is obliquely arranged from front to back, the front end of the top guard plate 1 is fixedly connected to the upper end of the front guard plate 2, the rear end of the top guard plate 1 is fixedly connected to the upper end of the rear guard plate 3, the rear guard plate 3 is vertically arranged, the bottom guard plate 4 is obliquely arranged from front to back to bottom at the lower side of the top guard plate 1, the front end of the bottom guard plate 4 is fixedly connected to the upper end of the front inner guard plate 5, the rear end of the bottom guard plate 4 is fixedly connected to the upper end of the rear inner guard plate 6, and the side plates are fixedly connected to the top guard plate 1, the top guard plate, The front and rear sides of the front guard plate 2, the rear guard plate 3, the bottom guard plate 4, the front inner guard plate 5 and the rear inner guard plate 6.
The flue gas flow is indicated by an arrow, and the flue gas flows from an outlet at the top of the cyclone separator to the connecting flue, passes through the declination type large obtuse angle turning flue and then reaches the tail heating surface.
When the flue gas flows through the declination type large obtuse angle steering flue, the flue gas is washed downwards at a certain flow velocity, so that the dust deposition at the bottom of the flue can be effectively cleaned, and the flue gas on the tail heating surface can be more uniform by the large obtuse angle steering, so that the service performance of the product is improved.
Each guard plate and each side plate are formed by matching steel plates, castable, heat-insulating layers and the like.
The second embodiment is as follows: referring to fig. 1, the top guard plate 1 and the front guard plate 2, the top guard plate 1 and the rear guard plate 3, the bottom guard plate 4 and the front inner guard plate 5, and the bottom guard plate 4 and the rear inner guard plate 6 are all connected in a smooth curve transition manner. Other components and connection modes are the same as those of the first embodiment.
The joint of the top guard plate 1 and the rear guard plate 3 adopts a large obtuse arc type.
The third concrete implementation mode: referring to fig. 1, the top guard plate 1 of the present embodiment has an angle α with a horizontal plane, where α is 2 ° to 10 °. Other components and connection modes are the same as those of the second embodiment.
The fourth concrete implementation mode: referring to fig. 1, the angle α between the roof guard 1 and the horizontal plane is 5 ° in the present embodiment. Other components and connection modes are the same as those of the third embodiment.
The fifth concrete implementation mode: referring to fig. 1, the angle between the bottom protection plate 4 and the horizontal plane is β, and β is 2 ° to 10 °. The other components and the connection mode are the same as those of the fourth embodiment.
The sixth specific implementation mode is as follows: referring to fig. 1, the angle between the bottom protection plate 4 and the horizontal plane is β, and β is 5 °. The other components and the connection mode are the same as the fifth embodiment mode.
The seventh embodiment: the embodiment is described with reference to fig. 1, the shape of the side plate in the embodiment is "η" shaped, the side plate includes a front vertical section, a transverse connection section and a rear vertical section, the upper end of the front vertical section is fixedly connected with the front end of the transverse connection section, the rear end of the transverse connection section is fixedly connected with the upper end of the rear vertical section, the side of the front guard plate 2 is fixedly connected with the outer side of the front vertical section, the side of the front inner guard plate 5 is fixedly connected with the inner side of the front vertical section, the side of the top guard plate 1 is fixedly connected with the outer side of the transverse connection section, the side of the bottom guard plate 4 is fixedly connected with the inner side of the transverse connection section, the side of the rear guard plate 3 is fixedly connected with the outer side of the rear vertical section, and the side of the rear inner side guard plate 6 is fixedly connected with the inner side of the rear vertical section. Other components and connection modes are the same as those of the first embodiment.
The specific implementation mode is eight: referring to fig. 1, the rear protective plate 3, the rear inner protective plate 6 and the surrounding areas of the two side plates are fixedly connected with a tail heat receiving screen 8. Other components and connection modes are the same as those of the first embodiment.
The specific implementation method nine: in the present embodiment, the thermal expansion joints 9 are provided in the circumferential direction in the surrounding areas of the front protector 2, the front inner protector 5, and the two side plates, as described above with reference to fig. 1. Other components and connection modes are the same as those of the first embodiment.
The detailed implementation mode is ten: the present embodiment will be described with reference to fig. 1, and the thermal expansion joint 9 according to the present embodiment is provided at the lower portion of the surrounding area of the front fender 2, the front inner fender 5, and the two side panels. The other components and the connection mode are the same as those of the ninth embodiment.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that various dependent claims and the features described herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (10)
1. A big obtuse angle of decline formula turns to flue for circulating fluidized bed boiler which characterized in that: the novel smoke-free cyclone separator comprises a top guard plate (1), a front guard plate (2), a rear guard plate (3), a bottom guard plate (4), a front inner guard plate (5), a rear inner guard plate (6) and two side plates, wherein the front guard plate (2) is vertically and fixedly connected to the front side of a smoke outlet end of a cyclone separator (7), the front inner guard plate (5) is vertically and fixedly connected to the rear side of the smoke outlet end of the cyclone separator (7), the top guard plate (1) is obliquely arranged from front to back, the front end of the top guard plate (1) is fixedly connected with the upper end of the front guard plate (2), the rear end of the top guard plate (1) is fixedly connected with the upper end of the rear guard plate (3), the rear guard plate (3) is vertically arranged, the bottom guard plate (4) is obliquely arranged on the lower side of the top guard plate (1) from front to back, the front end of the bottom guard plate (4) is fixedly connected with the upper end of the front inner guard plate (5), the rear end of the bottom (4) is fixedly connected with the upper end of the rear inner guard plate (6), the side plates are respectively and fixedly connected with the front side and the rear side of the top guard plate (1), the front guard plate (2), the rear guard plate (3), the bottom guard plate (4), the front inner side guard plate (5) and the rear inner side guard plate (6).
2. The declination large obtuse angle flue duct of the circulating fluidized bed boiler according to claim 1, wherein: the joints of the inner side walls between the top guard plate (1) and the front guard plate (2), between the top guard plate (1) and the rear guard plate (3), between the bottom guard plate (4) and the front inner side guard plate (5) and between the bottom guard plate (4) and the rear inner side guard plate (6) are all in smooth curve transition connection.
3. The declining large obtuse angle turn flue for circulating fluidized bed boiler of claim 2, wherein: the included angle between the top guard plate (1) and the horizontal plane is alpha, and the alpha is 2-10 degrees.
4. The declination large obtuse angle flue duct of the circulating fluidized bed boiler according to claim 3, wherein: the included angle alpha between the top protection plate (1) and the horizontal plane is 5 degrees.
5. The declination large obtuse angle flue duct of the circulating fluidized bed boiler according to claim 4, wherein: the included angle between the bottom guard plate (4) and the horizontal plane is beta, and the beta is 2-10 degrees.
6. The declination large obtuse angle flue diversion of claim 5 wherein: the included angle between the bottom protection plate (4) and the horizontal plane is beta, and the beta is 5 degrees.
7. The declination large obtuse angle flue duct of the circulating fluidized bed boiler according to claim 1, wherein: the shape of curb plate is "eta" font, the curb plate includes preceding vertical section, transverse connection section and back vertical section, the upper end of preceding vertical section and the front end rigid coupling of transverse connection section, the rear end of transverse connection section and the upper end rigid coupling of back vertical section, the side of preceding backplate (2) and the outside limit rigid coupling of preceding vertical section, the side of preceding inboard backplate (5) and the inboard side rigid coupling of preceding vertical section, the side of top backplate (1) and the outside limit rigid coupling of transverse connection section, the side of end backplate (4) and the inboard side rigid coupling of transverse connection section, the side of back backplate (3) and the outside limit rigid coupling of back vertical section, the side of back inboard backplate (6) and the inboard side rigid coupling of back vertical section.
8. The declination large obtuse angle flue duct of the circulating fluidized bed boiler according to claim 1, wherein: and a tail heating screen (8) is fixedly connected in the surrounded area of the rear protective plate (3), the rear inner protective plate (6) and the two side plates.
9. The declination large obtuse angle turning flue for the circulating fluidized bed boiler of claim 1, wherein: thermal expansion joints (9) are arranged on the surrounding areas of the front guard plate (2), the front inner guard plate (5) and the two side plates along the circumferential direction.
10. The declination large obtuse angle turning flue for the circulating fluidized bed boiler of claim 9, wherein: the thermal expansion joint (9) is arranged at the lower parts of the surrounding areas of the front guard plate (2), the front inner guard plate (5) and the two side plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221156845.6U CN217274102U (en) | 2022-05-12 | 2022-05-12 | Declination type large obtuse angle steering flue for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221156845.6U CN217274102U (en) | 2022-05-12 | 2022-05-12 | Declination type large obtuse angle steering flue for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217274102U true CN217274102U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221156845.6U Active CN217274102U (en) | 2022-05-12 | 2022-05-12 | Declination type large obtuse angle steering flue for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217274102U (en) |
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2022
- 2022-05-12 CN CN202221156845.6U patent/CN217274102U/en active Active
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