CN204629467U - cap structure - Google Patents
cap structure Download PDFInfo
- Publication number
- CN204629467U CN204629467U CN201520173948.7U CN201520173948U CN204629467U CN 204629467 U CN204629467 U CN 204629467U CN 201520173948 U CN201520173948 U CN 201520173948U CN 204629467 U CN204629467 U CN 204629467U
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- CN
- China
- Prior art keywords
- blast cap
- installing hole
- connecting ring
- exhaust vent
- upper boom
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- Expired - Fee Related
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Abstract
The utility model belongs to coal combustion technology field, be specially a kind of novel cap structure, its structure is simple, the problem that inconvenience installed by blast cap, the angle of blast cap exhaust vent can not be consistent can be solved, described blast cap head lower end has installing hole, internal thread is provided with in described installing hole, described blast cap bar is provided with the external screw thread with described screw-internal thread fit, described blast cap head is threaded with described blast cap bar, evenly have multiple exhaust vent around described installing hole, described installing hole is communicated with described exhaust vent inside.
Description
Technical field
The utility model belongs to coal combustion technology field, is specially a kind of cap structure.
Background technology
Combustion technology of circulating fluidized is as the coal combustion technology of a kind of advanced person, and because of its good fuel tolerance, higher efficiency of combustion, superior environmental-protecting performance and load adjustment ability, receive increasing concern.Upwards air blast bottom recirculating fluidized bed burner hearth, makes the fuel inside burner hearth realize a kind of fluidized state and combustion reaction occurs, and is a large feature of circulating fluidized bed technique.But wherein can realize " air blast ", the key equipment of " fluidisation " this process is exactly blast cap.Therefore, the design of blast cap all has a great impact the uniformity of cloth wind, the numerical value such as pressure and flow, also will directly affect fluidizing performance and the efficiency of combustion of material in burner hearth.
At present, a variety of for being designed with of cap structure, as mushroom-shaped, S shape, bell shape, T-shaped etc., various blast cap all has its respective pluses and minuses.In CFBB, the installation of current blast cap all adopts the method for Site Welding, and namely blast cap is fixed on the sleeve pipe of air distribution plate, but under the running environment of long-term high temperature, strong friction, blast cap very easily breaks down.Cut to maintenance or replacing blast cap, consume a large amount of human and material resources, be unfavorable for the safe and stable operation of system.Meanwhile, for the blast cap (as T-shaped blast cap) air outlet being had to angle requirement, the mode of Site Welding easily makes the angle of each blast cap air outlet not be consistent, thus affects the cloth wind uniformity and efficiency of combustion etc. of whole burner hearth.
Summary of the invention
In order to solve the problem, the utility model provides a kind of cap structure, and its structure is simple, can solve the problem that inconvenience installed by blast cap, the angle of blast cap exhaust vent can not be consistent.
Its technical scheme is such: a kind of cap structure, it comprises blast cap head and blast cap bar, it is characterized in that, described blast cap head lower end has installing hole, be provided with internal thread in described installing hole, described blast cap bar be provided with the external screw thread with described screw-internal thread fit, described blast cap head is threaded with described blast cap bar, evenly have multiple exhaust vent around described installing hole, described installing hole is communicated with described exhaust vent inside.
It is further characterized in that, described blast cap head is up-narrow and down-wide flechette-type blast cap head, and multiple described exhaust vent uniform pitch is arranged in around described installing hole;
Blast cap bar comprises upper boom, connecting ring, lower beam, and described upper boom upper end is provided with described external screw thread, and described upper boom lower end is fixedly connected with described connecting ring upper end, and described lower beam upper end is fixedly connected with described connecting ring lower end;
The external diameter of described connecting ring internal diameter and described upper boom, lower beam matches, described upper boom lower end is welded to connect described connecting ring upper end inwall, described lower beam upper end is welded to connect described connecting ring lower end inner wall, leaves gap between described upper boom lower end and described lower beam upper end;
Described installing hole lower end is provided with ring-shaped step, and described internal thread is arranged at described ring-shaped step sidepiece.
After adopting structure of the present utility model, blast cap head is threaded with blast cap bar by installing hole, structure is simple, convenient for installation and maintenance, evenly exhaust vent is had around installing hole, without the need to specially adjusting setting angle, solve the problem that blast cap installation is inconvenient, the angle of the exhaust vent of blast cap can not be consistent.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Detailed description of the invention
As shown in Figure 1, a kind of cap structure, it comprises blast cap head 1 and blast cap bar 2, blast cap head is up-narrow and down-wide flechette-type blast cap head, blast cap head 1 lower end has installing hole 3, internal thread is provided with in installing hole 3, blast cap bar 2 is provided with the external screw thread with screw-internal thread fit, blast cap head 1 is threaded with blast cap bar 2, multiple exhaust vent 4 be in tilted layout evenly is had around installing hole 3, can effectively prevent dust from blocking exhaust vent 4 like this, six exhaust vents can be had in the utility model, exhaust vent is in tilted layout as the best horizontal by 60 °, installing hole 3 is communicated with exhaust vent 4 inside.
Blast cap bar 2 comprises upper boom 2-1, connecting ring 2-2, lower beam 2-3, upper boom 2-1 and lower beam 2-3 is pipe, upper boom 2-1 upper end is provided with outer spiral shell, connecting ring 2-2 internal diameter and upper boom 2-1, the external diameter of lower beam 2-3 matches, upper boom 2-1 lower end is welded to connect connecting ring 2-2 upper end inwall, lower beam 2-3 upper end is welded to connect connecting ring 2-2 lower end inner wall, blast cap bar 2 adopts two sections pipe to be welded to connect ring 2-2 and forms, length adjustment is more flexible, flexible design length can be required according to user, improve operating efficiency, gap is left between upper boom 2-1 lower end and lower beam 2-3 upper end, reduce thermal expansion to the impact of pipe.
Installing hole 3 lower end is provided with ring-shaped step 5, and internal thread is arranged at ring-shaped step 5 sidepiece, and blast cap bar 2 upper end coordinates with ring-shaped step 5, ensures that blast cap head 1 installs stable putting in place further.
The utility model Apoplexy cap head 1 is foundry goods blast cap head, blast cap bar 2 is stainless pipe, fall cap structure welded and installed of the present utility model on boiler grid plate, make cloth wind evenly produce the numerical value such as comparatively stable pressure and flow, improve fluidizing performance and the efficiency of combustion of material in burner hearth.
Claims (5)
1. a cap structure, it comprises blast cap head and blast cap bar, it is characterized in that, described blast cap head lower end has installing hole, be provided with internal thread in described installing hole, described blast cap bar be provided with the external screw thread with described screw-internal thread fit, described blast cap head is threaded with described blast cap bar, evenly have multiple exhaust vent around described installing hole, described installing hole is communicated with described exhaust vent inside.
2. a kind of cap structure according to claim 1, is characterized in that, described blast cap head is up-narrow and down-wide flechette-type blast cap head, and multiple described exhaust vent uniform pitch is arranged in around described installing hole.
3. a kind of cap structure according to claim 1 and 2, it is characterized in that, blast cap bar comprises upper boom, connecting ring, lower beam, and described upper boom upper end is provided with described external screw thread, described upper boom lower end is fixedly connected with described connecting ring upper end, and described lower beam upper end is fixedly connected with described connecting ring lower end.
4. a kind of cap structure according to claim 3, it is characterized in that, the external diameter of described connecting ring internal diameter and described upper boom, lower beam matches, described upper boom lower end is welded to connect described connecting ring upper end inwall, described lower beam upper end is welded to connect described connecting ring lower end inner wall, leaves gap between described upper boom lower end and described lower beam upper end.
5. a kind of cap structure according to claim 1, is characterized in that, described installing hole lower end is provided with ring-shaped step, and described internal thread is arranged at described ring-shaped step sidepiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173948.7U CN204629467U (en) | 2015-03-26 | 2015-03-26 | cap structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520173948.7U CN204629467U (en) | 2015-03-26 | 2015-03-26 | cap structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204629467U true CN204629467U (en) | 2015-09-09 |
Family
ID=54048492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520173948.7U Expired - Fee Related CN204629467U (en) | 2015-03-26 | 2015-03-26 | cap structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204629467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465777A (en) * | 2015-03-26 | 2016-04-06 | 无锡华光锅炉股份有限公司 | Funnel cap structure |
| CN105841182A (en) * | 2016-06-08 | 2016-08-10 | 孙吉章 | Air outlet device of biomass combustion furnace |
-
2015
- 2015-03-26 CN CN201520173948.7U patent/CN204629467U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465777A (en) * | 2015-03-26 | 2016-04-06 | 无锡华光锅炉股份有限公司 | Funnel cap structure |
| CN105465777B (en) * | 2015-03-26 | 2017-11-17 | 无锡华光锅炉股份有限公司 | A kind of cap structure |
| CN105841182A (en) * | 2016-06-08 | 2016-08-10 | 孙吉章 | Air outlet device of biomass combustion furnace |
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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: 20150909 Termination date: 20180326 |