CN105757652A - Material returning blast cap structure - Google Patents
Material returning blast cap structure Download PDFInfo
- Publication number
- CN105757652A CN105757652A CN201610222722.0A CN201610222722A CN105757652A CN 105757652 A CN105757652 A CN 105757652A CN 201610222722 A CN201610222722 A CN 201610222722A CN 105757652 A CN105757652 A CN 105757652A
- Authority
- CN
- China
- Prior art keywords
- blast cap
- adapter
- material returning
- head
- described blast
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipe Accessories (AREA)
Abstract
The invention belongs to the field of a material returning device of a circulating fluidized bed boiler and particularly relates to a material returning blast cap structure. The material returning blast cap structure is simple in structure and can be used for enhancing an air distribution effect of a material returning blast cap; and the material returning blast cap is convenient to maintain and replace, the maintenance and replacement cost of the material returning blast cap is reduced, and the utilization rate of a material returning device is improved. The material returning blast cap structure comprises a blast cap connection pipe and a blast cap head, wherein a gas outlet is formed in the blast cap head. The material returning blast cap structure is characterized in that an annular base plate is embedded on the side wall of the blast cap connection pipe; the lower surface of the annular base plate is welded together with the blast cap connection pipe; and the blast cap head is embedded into the upper part of the blast cap connection pipe and is in spot welding connection with the upper surface of the annular base plate.
Description
Technical field
The invention belongs to CFBB material-returning device field, be specially a kind of returning charge cap structure.
Background technology
The pollution problem that boiler combustion produces is more serious, and pollution administration is very urgent, and CFBB is because of its good environmental protection, the advantage such as fuel tolerance is wide, efficiency of combustion is high and load regulation range is big, is day by day used widely.
Material-returning device is the important component part of Materiais for CFB Boilers cyclic process, its interior blast cap determine especially recycle stock can the important spare part of normal loopback, to whether cloth wind in return box uniformly directly affects.
Owing to the temperature of charge in material-returning device is typically between 850～1050 DEG C, and material concentration is high, and under long term high temperature, the strong running environment rubbed, returning charge blast cap needs to carry out maintenance in use for some time and changes.
Chinese utility model patent 201420144603.4 reports the quick detachable type returning charge blast cap of a kind of slip-off preventing for CFBB, Novel bamboo joint type blast cap head and blast cap take over and form, and both are threaded connection.This returning charge blast cap is possible to prevent blast cap head at the impact of high-head fluidized wind and loose or dislocation, and it is easy to spanner degree of tightness blast cap head and blast cap adapter, but it is complicated that its shortcoming is structure, manufacture inconvenience, and threaded make blast cap head and blast cap adapter be easily consequently flowed together in the material-returning device of high temperature, inconvenience returning charge blast cap maintenance change.
Summary of the invention
In order to solve the problems referred to above, the invention provides a kind of returning charge cap structure, its simple in construction, it is possible to strengthen the cloth wind effect of returning charge blast cap, facilitate the maintenance of returning charge blast cap to change, reduce the maintenance replacement cost of returning charge blast cap, improve the utilization rate of material-returning device.
Its technical scheme is such that a kind of returning charge cap structure, it includes blast cap adapter and blast cap head, described blast cap head has venthole, it is characterized in that, described blast cap adapter sidewall is nested with annular backing plate, described annular backing plate lower surface welds with the adapter of described blast cap, and described blast cap head is nested in described blast cap adapter top and is connected with described annular backing plate upper surface spot welding.
It is further characterized by, spot welding three point attachment uniform with described annular backing plate upper surface bottom described blast cap head；
The adapter of described blast cap is a light pipe, and described annular backing plate is a doughnut-shaped steel plate, and described blast cap head is a bell jar cylindrical blast cap head；
Having stepped counterbore in bottom described blast cap head, described venthole is arranged in the second level perforate of described stepped counterbore, and the first order perforate inwall of described blast cap head coordinates with described blast cap adapter outer wall；
Described venthole is evenly arranged in the circumference wind direction of described blast cap adapter, the downward-sloping layout of described venthole.
After adopting the cap structure of the present invention, overall structure is simple, owing to blast cap head is nested in blast cap adapter top, after air enters from blast cap adapter, either directly through blast cap head, the cavity that blast cap adapter combination is formed enters venthole, leak out less, pressure cloth wind is more uniform, cloth wind is effective, blast cap head is connected with annular backing plate upper surface spot welding, the maintenance facilitating returning charge blast cap is changed, avoid the defect changed together with needing after prior art wind cap head is easily consequently flowed together in the material-returning device of high temperature with blast cap adapter, reduce the maintenance replacement cost of returning charge blast cap, improve the utilization rate of material-returning device.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is blast cap header structure schematic diagram；
Fig. 3 is the upward view of Fig. 2.
Detailed description of the invention
See Fig. 1, Fig. 2, shown in Fig. 3, a kind of returning charge cap structure, it includes blast cap adapter 1 and blast cap head 3, blast cap head 3 circumferencial direction uniformly has venthole 4, the downward-sloping layout of venthole 4, require to arrange flexibly the aperture of venthole according to cloth wind, quantity and angle of inclination, the present invention has been evenly arranged 12, blast cap adapter 1 sidewall is nested with annular backing plate 2, annular backing plate 2 lower surface welds with blast cap adapter 1, stepped counterbore is had in bottom blast cap head 3, venthole 4 is arranged in the second level perforate of stepped counterbore, the first order perforate inwall of blast cap head 3 coordinates with blast cap adapter 1 outer wall, blast cap head 3 is nested in blast cap adapter 1 top and spot welding three point attachment uniform with annular backing plate 2 upper surface.Concrete, blast cap adapter 1 is a light pipe, and annular backing plate 2 is a doughnut-shaped steel plate, and blast cap head 3 is a bell jar cylindrical blast cap head, and each modular construction is simple, convenient processing and manufacture, lowers production cost.
Claims (5)
1. a returning charge cap structure, it includes blast cap adapter and blast cap head, described blast cap head has venthole, it is characterized in that, described blast cap adapter sidewall is nested with annular backing plate, described annular backing plate lower surface welds with the adapter of described blast cap, and described blast cap head is nested in described blast cap adapter top and is connected with described annular backing plate upper surface spot welding.
2. a kind of returning charge cap structure according to claim 1, it is characterised in that spot welding three point attachment uniform with described annular backing plate upper surface bottom described blast cap head.
3. a kind of returning charge cap structure according to claim 1, it is characterised in that the adapter of described blast cap is a light pipe, and described annular backing plate is a doughnut-shaped steel plate, and described blast cap head is a bell jar cylindrical blast cap head.
4. a kind of returning charge cap structure according to claim 1, it is characterized in that, having stepped counterbore in bottom described blast cap head, described venthole is arranged in the second level perforate of described stepped counterbore, and the first order perforate inwall of described blast cap head coordinates with described blast cap adapter outer wall.
5. a kind of returning charge cap structure according to claim 1, it is characterised in that described venthole is evenly arranged in the circumference wind direction of described blast cap adapter, the downward-sloping layout of described venthole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222722.0A CN105757652A (en) | 2016-04-12 | 2016-04-12 | Material returning blast cap structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222722.0A CN105757652A (en) | 2016-04-12 | 2016-04-12 | Material returning blast cap structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105757652A true CN105757652A (en) | 2016-07-13 |
Family
ID=56334683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610222722.0A Pending CN105757652A (en) | 2016-04-12 | 2016-04-12 | Material returning blast cap structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105757652A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202253613U (en) * | 2011-09-28 | 2012-05-30 | 神华集团有限责任公司 | Fluidized bed boiler air cap and fluidized bed boiler air distribution device |
| US20120214109A1 (en) * | 2011-02-22 | 2012-08-23 | Alstom Technology Ltd | Fluidizing nozzle weld collar |
| CN202924969U (en) * | 2012-11-20 | 2013-05-08 | 山东万丰煤化工设备制造有限公司 | Wind cap capable of enabling mixed gas in pulverized coal gasification furnace to uniformly enter furnace |
| CN203656940U (en) * | 2013-09-25 | 2014-06-18 | 广西绿洲热能设备有限公司 | Blast cap of biomass boiler burning high-concentration organic wastewater |
| CN203893163U (en) * | 2014-01-13 | 2014-10-22 | 四川省宜宾惠美线业有限责任公司 | Bell jar type air cap of circulating fluidized bed boiler |
| CN204240345U (en) * | 2014-11-18 | 2015-04-01 | 济南永泉节能环保科技有限公司 | Wind cap for boiler |
| CN204678330U (en) * | 2015-04-21 | 2015-09-30 | 东方电气集团东方锅炉股份有限公司 | Bell-shaped wind cap and mounting structure thereof |
| CN205717178U (en) * | 2016-04-12 | 2016-11-23 | 无锡华光锅炉股份有限公司 | Returning charge cap structure |
-
2016
- 2016-04-12 CN CN201610222722.0A patent/CN105757652A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120214109A1 (en) * | 2011-02-22 | 2012-08-23 | Alstom Technology Ltd | Fluidizing nozzle weld collar |
| CN202253613U (en) * | 2011-09-28 | 2012-05-30 | 神华集团有限责任公司 | Fluidized bed boiler air cap and fluidized bed boiler air distribution device |
| CN202924969U (en) * | 2012-11-20 | 2013-05-08 | 山东万丰煤化工设备制造有限公司 | Wind cap capable of enabling mixed gas in pulverized coal gasification furnace to uniformly enter furnace |
| CN203656940U (en) * | 2013-09-25 | 2014-06-18 | 广西绿洲热能设备有限公司 | Blast cap of biomass boiler burning high-concentration organic wastewater |
| CN203893163U (en) * | 2014-01-13 | 2014-10-22 | 四川省宜宾惠美线业有限责任公司 | Bell jar type air cap of circulating fluidized bed boiler |
| CN204240345U (en) * | 2014-11-18 | 2015-04-01 | 济南永泉节能环保科技有限公司 | Wind cap for boiler |
| CN204678330U (en) * | 2015-04-21 | 2015-09-30 | 东方电气集团东方锅炉股份有限公司 | Bell-shaped wind cap and mounting structure thereof |
| CN205717178U (en) * | 2016-04-12 | 2016-11-23 | 无锡华光锅炉股份有限公司 | Returning charge cap structure |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |