CN202253612U - Air cap with self-tightening function - Google Patents
Air cap with self-tightening function Download PDFInfo
- Publication number
- CN202253612U CN202253612U CN2011203268451U CN201120326845U CN202253612U CN 202253612 U CN202253612 U CN 202253612U CN 2011203268451 U CN2011203268451 U CN 2011203268451U CN 201120326845 U CN201120326845 U CN 201120326845U CN 202253612 U CN202253612 U CN 202253612U
- Authority
- CN
- China
- Prior art keywords
- air
- blast cap
- cap head
- self
- air cap
- 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 - Lifetime
Links
Images
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model discloses an air cap with a self-tightening function. The air cap comprises a main air duct inserted into an air cap head, wherein the main air duct is hermetically connected with the air cap head, the circumference of the air cap head is uniformly distributed with a plurality of air cap head spiral air vents, the direction of each air cap head spiral air vent forms a certain included angle with the cross section of the air cap head; and the air cap with the self-tightening function can further comprise an air distributing duct which is detachably connected with the main air duct in the air cap head, wherein the top end of the air distributing duct is sealed, and the side wall of the air distributing duct is uniformly distributed with air vents of the air distributing duct. The air cap with the self-tightening function has the advantages of falling-prevention performance, good wear resistance, capability of preventing large particle deposition, convenience for installation, maintenance and replacement and the like.
Description
Technical field
The utility model belongs to the fluidisation cloth wind technical field at positions such as boiler hearth of circulating fluidized bed, material returning device, external bed and spent-bed cooler, is specifically related to a kind of blast cap with function of self-tightening.
Background technology
The reasonable structure form of recirculating fluidized bed blast cap directly determines the quality of fluidized-bed combustion boiler goods fluid, thereby influences ignition of the boiler, burning and safety and economic operation, even has influence on the convenience of installation and the length of repair time.Blast cap of circulating fluidized bed boiler form and kind are very many, but the effect that in actual motion, shows and unsatisfactory shows that mainly most of blast cap comes off, weares and teares, leaks problems such as bed material, obstruction in running.Through updating, comparatively the typical structure of extensive use has T type and bell-jar:
T shape blast cap is made up of air main and the T shape blast cap head be located on the air main, and the jet pipe of blast cap head is downward-sloping.Its advantage is simple in structure, is convenient to make.But be prone to the in-furnace dust slag in actual use through the bleed phenomenon of air compartment of jet pipe, influence the normal operation of fluidized-bed combustion boiler.Can only change after blast cap is impaired, and the replacing time is longer.
The bell-jar blast cap is made up of air main and blast cap head two parts of being located on the air main.Can make this blast cap pretty good through the outer hole dimension of appropriate design and quantity and deployment scenarios, but, be prone to aperture, influence fluidization quality because of injection forms particle to aperture rapid wearing and tearing all around along with the increase of running time in operation effect in early stage.And bulky grain is prone to deposit in the stove, causes in the boiler hearth of circulating fluidized bed problems such as the inhomogeneous and bed coking of fluidisation.Because of the air main top is a through hole, has only the blast cap head to be in place and to make it airtight in addition, do not put in place, then can cause resistance and different design if install.And in actual manufacturing, transportation, can produce the unequal problem of screw thread bite, end face unavoidably, cause installing not in place, thereby cause the equipment can't operate as normal.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of the utility model is to provide a kind of blast cap with function of self-tightening, have slip-off preventing, wearability good, prevent the bulky grain deposition, be convenient to install, safeguard characteristics such as replacing.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of blast cap with function of self-tightening comprises air main 1, and air main 1 extend in the blast cap head 4, air main 1 and 4 airtight connections of blast cap head, blast cap head 4 circumferentially be uniformly distributed with a plurality of blast cap head spiral air vents 2.
Said air main 1 and blast cap head 4 are through being threaded.
Also comprise branch airduct 3, divide airduct 3, divide airduct 3 top closure, be evenly equipped with branch airduct air vent 5 on the sidewall in 4 inner and air main 1 releasable connections of blast cap head.
Said minute airduct 3 and air main 1 perhaps directly adopt plug-in to connect through being threaded.
The cross section of said each blast cap head spiral air vent 2 directions and blast cap head 4 has certain angle.
Compared with prior art, the utility model has the advantages that:
1) since blast cap head 4 and air main 1 be threaded and blast cap head spiral air vent 2 special towards; Make blast cap under operating condition, produce self-tightening power; Make the blast cap difficult drop-off, avoided simultaneously welding the generation that causes thermal stress and make the impaired problem of blast cap, and more convenient installation;
2) the blast cap wear problem of also having avoided the blast cap aperture to cause blowing makes large granular materials be difficult on air distribution plate, depositing simultaneously;
3) divide airduct 3 tops to shut, only around perforate, avoided blast cap to install not in place and blast cap resistance that cause does not reach the design load problem;
4) blast cap head 4 is detachable with air main 1 for being threaded and dividing airduct 3, is convenient to the repairing or the replacement of blast cap, also is convenient to because of fuel change or the improper air distribution plate transformation that need carry out of air distribution plate resistance;
5) the close palace structure of 1 of blast cap head 4 and air main can effectively be prevented the generation of leak-stopping bed material problem.
In sum, the utlity model has slip-off preventing, wearability good, prevent bulky grain deposition, material leak-proof, be convenient to install, safeguard characteristics such as replacing.
Description of drawings
Fig. 1 is the structure half sectional view of the utility model.
Fig. 2 is the vertical view of the utility model.
Fig. 3 is for dividing the sketch map of airduct.
Fig. 4 is the sketch map of air main.
Fig. 5 is the utility model specific embodiment sketch map.
The specific embodiment
Specify the embodiment of the utility model below in conjunction with accompanying drawing and embodiment.
As depicted in figs. 1 and 2, the utility model is a kind of blast cap with function of self-tightening, comprises air main 1; Air main 1 extend in the blast cap head 4, and air main 1 is connected through screw is airtight with blast cap head 4, also comprises branch airduct 3; Divide airduct 3 in 4 inner and air main 1 releasable connections of blast cap head, for example be threaded or the plug-in mounting connection top closure of dividing airduct 3; Be evenly equipped with branch airduct air vent 5 on the sidewall, blast cap head 4 circumferentially be uniformly distributed with a plurality of blast cap head spiral air vents 2, that is: each blast cap head air vent 2 directions are identical with air main 1 radial direction angle and greater than zero; Simultaneously, the cross section of each blast cap head air vent 2 directions and blast cap head 4 also has certain angle.
Blast cap head air vent 2 can be left-handed or dextrorotation, can be straight hole, also can be curved slot, identical with the fastening direction of blast cap head thread, this kind structure solved prior art bell-jar blast cap be prone to come off, the problem of wearing and tearing, large granular materials deposition.
As shown in Figure 3, be minute airduct 3 structural representations, divide the top closure of airduct 3, only on sidewall, be evenly equipped with branch airduct air vent 5, avoided blast cap to install not in place and blast cap resistance that cause does not reach the design load problem.
As shown in Figure 4, be air main 1 structural representation, its with junction of dividing airduct 3 be provided with internal thread with minute airduct 3 through being threaded, perhaps the junction inner tubal wall is thinned, be convenient to branch airduct 3 plug-in mountings.
As shown in Figure 5, be the utility model specific embodiment sketch map, blast cap head 4, air main 1 and branch airduct 3 be assembled successively, then air main 1 is welded on the air distribution plate 7, lays refractory material 6 on the air distribution plate 7.
The operation principle of the utility model is: when air-flow when the lower end of air main 1 upwards flows into; Get into branch airduct 3 through air main 1; Through minute airduct 3 up after; Flow into blast cap heads 4 and divide the annular gap between the airduct 3 from branch airduct air vent all around 5, flow downward then, the blast cap head spiral air vent of offering from blast cap head 4 at last 2 flows out.
In the utility model, blast cap head, air main and branch airduct 3 be detachably assembling all, is convenient to the repairing or the replacement of blast cap, also is convenient to because of fuel change or the improper air distribution plate transformation that need carry out of air distribution plate resistance; The close palace structure that blast cap head 4 and air main are 1 can effectively be prevented the generation of leak-stopping bed material problem.Have slip-off preventing, wearability good, prevent bulky grain deposition, material leak-proof, be convenient to install, safeguard characteristics such as replacing.
Claims (7)
1. the blast cap with function of self-tightening comprises air main (1), and air main (1) extend in the blast cap head (4), and air main (1) and airtight connection of blast cap head (4) is characterized in that, blast cap head (4) circumferentially be uniformly distributed with a plurality of blast cap head spiral air vents (2).
2. the blast cap with function of self-tightening according to claim 1 is characterized in that, said air main (1) and blast cap head (4) are through being threaded.
3. the blast cap with function of self-tightening according to claim 1 is characterized in that, also comprises branch airduct (3), divides airduct (3) inner and air main (1) releasable connection at blast cap head (4).
4. the blast cap with function of self-tightening according to claim 3 is characterized in that, said minute airduct (3) top closure is evenly equipped with branch airduct air vent (5) on the sidewall.
5. the blast cap with function of self-tightening according to claim 3 is characterized in that, said minute airduct (3) with air main (1) through being threaded.
6. the blast cap with function of self-tightening according to claim 1 is characterized in that, said minute airduct (3) be connected for plug-in with air main (1).
7. the blast cap with function of self-tightening according to claim 1 is characterized in that, the cross section of said each blast cap head spiral air vent (2) direction and blast cap head (4) has certain angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203268451U CN202253612U (en) | 2011-09-01 | 2011-09-01 | Air cap with self-tightening function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203268451U CN202253612U (en) | 2011-09-01 | 2011-09-01 | Air cap with self-tightening function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202253612U true CN202253612U (en) | 2012-05-30 |
Family
ID=46114848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203268451U Expired - Lifetime CN202253612U (en) | 2011-09-01 | 2011-09-01 | Air cap with self-tightening function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202253612U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305399A (en) * | 2011-09-01 | 2012-01-04 | 中国华能集团清洁能源技术研究院有限公司 | Conveniently-assembled cowl with self-tightening function |
| CN103994427A (en) * | 2014-01-23 | 2014-08-20 | 浙江富春江环保热电股份有限公司 | Low-nitrogen combustion blast cap of circulating fluidized bed boiler |
| CN105683655A (en) * | 2013-12-11 | 2016-06-15 | 斗山能捷斯有限责任公司 | Air distribution nozzle and a fluidized bed reactor |
-
2011
- 2011-09-01 CN CN2011203268451U patent/CN202253612U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305399A (en) * | 2011-09-01 | 2012-01-04 | 中国华能集团清洁能源技术研究院有限公司 | Conveniently-assembled cowl with self-tightening function |
| CN105683655A (en) * | 2013-12-11 | 2016-06-15 | 斗山能捷斯有限责任公司 | Air distribution nozzle and a fluidized bed reactor |
| CN103994427A (en) * | 2014-01-23 | 2014-08-20 | 浙江富春江环保热电股份有限公司 | Low-nitrogen combustion blast cap of circulating fluidized bed boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202253612U (en) | Air cap with self-tightening function | |
| CN102305399A (en) | Conveniently-assembled cowl with self-tightening function | |
| CN2699136Y (en) | Vortex pulverized coal burner | |
| CN206944137U (en) | CFBB based on denitration minimum discharge technology | |
| CN203177163U (en) | Outer hexagonal air cap of circulating fluidized bed boiler | |
| CN105927975B (en) | A kind of air distribution plate, selective deslagging device and multipath circulating fluidized bed boiler | |
| CN202561732U (en) | Air distribution plate and air cap in circulating fluidized bed boiler | |
| CN103411214B (en) | Vortex burner inside contracts and extends out formula nozzle | |
| CN202973073U (en) | Air-cooled slag discharging pipe for small and medium-sized circulating fluidized bed boiler | |
| CN202688339U (en) | Pulverized coal distributor for blast furnace coal injection | |
| CN209341244U (en) | A kind of blast cap of circulating fluidized bed | |
| CN103411215A (en) | Multi-directional jet-type cyclone pulverized coal burner | |
| CN201706486U (en) | Novel bell jar cylindrical blast cap for circulating fluidized bed boiler | |
| CN103047644A (en) | Double-airflow channel air cap | |
| CN203927900U (en) | A kind of micro-oil coal powder burner | |
| CN210624512U (en) | Cyclone burner and cyclone burner ventilation air methane spraying system | |
| CN209445349U (en) | A kind of composite rotating coupling nonuniform air distribution plate | |
| CN201764492U (en) | Annular current stabilization wind cap | |
| CN108397767B (en) | Low-bed-pressure low-air-volume combustion operation method for circulating fluidized bed boiler | |
| CN204786421U (en) | Many fuel rotary kiln combustor | |
| CN205746809U (en) | Blast cap for CFBB | |
| CN206572502U (en) | One kind loosens wind apparatus | |
| CN106287684A (en) | A kind of blast cap for CFBB | |
| CN205782888U (en) | A kind of air distribution plate, selective deslagging device and multipath circulating fluidized bed boiler | |
| CN2676035Y (en) | Double-whirl multi-channel burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |