CN2851868Y - Highly-wearable alumina ceramic blast cap - Google Patents
Highly-wearable alumina ceramic blast cap Download PDFInfo
- Publication number
- CN2851868Y CN2851868Y CN 200520077042 CN200520077042U CN2851868Y CN 2851868 Y CN2851868 Y CN 2851868Y CN 200520077042 CN200520077042 CN 200520077042 CN 200520077042 U CN200520077042 U CN 200520077042U CN 2851868 Y CN2851868 Y CN 2851868Y
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- China
- Prior art keywords
- blast cap
- cap
- steel alloy
- alumina ceramic
- wind
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- Expired - Fee Related
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Abstract
The utility model relates to a high wear resisting alumina ceramic wind cap, which belongs to an important component of a boiling furnace of a circulating fluidized bed. The utility model comprises a main wind pipe made of steel alloy and a wind outlet, wherein the top part of the main wind pipe made of steel alloy is provided with an alumina ceramic cap. When the equipment is in the working state of high temperature, the equipment has good wear resistance, difficult coke formation on the wind discharging hole and convenient installation and replacement. Compared with alloy steel cast products, the service life is prolonged.
Description
Technical field
The utility model belongs to the important spare part of recirculating fluidized bed fluidized bed furnace, refers in particular to a kind of high abrasion aluminium oxide ceramics blast cap.
Technical background
Blast cap is the critical component in recirculating fluidized bed (CFB) fluidized bed furnace, effect is boiler blower wind-force is delivered in the furnace bottom bed material, by control air output size, can make the siege bed material be in fluidisation formula fluidized state all the time, coal supply is fully burnt, because blast cap is in the hot operation state at work for a long time, and be subjected to washing away of coal particles and slag, the serious wear of blast cap, so traditional blast cap is to be formed by the steel alloy monoblock cast, its cost is very expensive, and the deficiency that also exists is in addition: 1, and wearability is not high.Under the hot operation state, its scuff resistance of steel alloy cast-in-block blast cap can reduce along with the rising of temperature, during work when being subjected to the washing away of solid coal particle and slag, the wearing and tearing of blast cap top are very serious, generally be no more than 1 year its service life, only be 3-6 month the service life of serious wear, after treating that blast cap is worn out, the bed material falls into air compartment in a large number, and the air output of boiler can not get effective control, cause the boiler fluidisation inhomogeneous, coal consumption increases, and not only waste energy, and operational efficiency descends, can cause coking to make a whole set of boiler be forced to shutdown maintenance when serious, bring enormous economic loss; 2, steel alloy cast-in-block blast cap is changed very difficult.CFB Wind cap for boiler quantity is more, and major part is to imbed in the castable refractory, in case blast cap needs to change, must chisel and water material feeding, change one by one, leak out after can causing absent-mindedness to the blast cap that does not need to change like this, and time-consuming, effort, have a strong impact on the normal operation of boiler.
Summary of the invention
The utility model is just in order to overcome above-mentioned deficiency, provide under a kind of hot operation state wearability good, vent is difficult for coking, long service life, high abrasion aluminium oxide ceramics blast cap is easily changed in installation, innovative point is embodied in the top of traditional blast cap part easy to wear and uses aluminium oxide ceramics instead, structure and shape are made novel nonmetal high abrasion blast cap as required, this kind structure scuff resistance of working under 1000 ℃ of high temperature can not descend, and it is cheap, with screw thread ceramic blast cap head is connected with former foundry goods simultaneously, be easy to install and change, need not break and water material feeding, need only back out the blast cap head along screw thread, change again and get final product, not only save the replacing time, also can not influence simultaneously the compactness of other blast cap, specifically implement like this: high abrasion aluminium oxide ceramics blast cap comprises the steel alloy air main, air outlet, but it is characterized in that steel alloy air main top is equipped with capping oxidation aluminium ceramic cap.Because high abrasion aluminium oxide ceramics blast cap is under the condition of high temperature, scuff resistance can not descend, and blast cap can not be worn through yet, and can not cause the bed material to fall into air compartment, influence air-supply effect, and vent is difficult for coking, can not influence the normal operation of boiler.
Aluminium oxide ceramics cap of the present utility model is threaded with the steel alloy air main, this demountable structure not only makes easy for installation, and when changing ceramic cap, need not break and water material feeding, need only back out the blast cap head along screw thread and can realize, the time saving and energy saving compactness that also can not influence other blast cap.
The utility model is the aluminium oxide ceramics cap of detachable structure by designing one with the steel alloy air main just, has improved the wearability of whole blast cap, and greatly prolong than the steel alloy cast article service life, and install change convenient.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
High abrasion aluminium oxide ceramics blast cap comprises steel alloy air main 1, air outlet 2, and steel alloy air main 1 top is equipped with aluminium oxide ceramics cap 3, and overlayable aluminium oxide ceramics cap 3 is threaded with steel alloy air main 1.
Claims (2)
1. high abrasion aluminium oxide ceramics blast cap comprises steel alloy air main, air outlet, it is characterized in that steel alloy air main top is equipped with the aluminium oxide ceramics cap.
2. high abrasion aluminium oxide ceramics blast cap according to claim 1 is characterized in that the aluminium oxide ceramics cap is threaded with the steel alloy air main.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077042 CN2851868Y (en) | 2005-11-03 | 2005-11-03 | Highly-wearable alumina ceramic blast cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077042 CN2851868Y (en) | 2005-11-03 | 2005-11-03 | Highly-wearable alumina ceramic blast cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2851868Y true CN2851868Y (en) | 2006-12-27 |
Family
ID=37585826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520077042 Expired - Fee Related CN2851868Y (en) | 2005-11-03 | 2005-11-03 | Highly-wearable alumina ceramic blast cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2851868Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881440A (en) * | 2010-07-15 | 2010-11-10 | 西安热工研究院有限公司 | Annular constant-current hood |
| CN109827171A (en) * | 2019-03-15 | 2019-05-31 | 镇江东亚碳素焦化有限公司 | A kind of petroleum coke combustion desulfurization fluidized-bed combustion boiler |
-
2005
- 2005-11-03 CN CN 200520077042 patent/CN2851868Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881440A (en) * | 2010-07-15 | 2010-11-10 | 西安热工研究院有限公司 | Annular constant-current hood |
| CN109827171A (en) * | 2019-03-15 | 2019-05-31 | 镇江东亚碳素焦化有限公司 | A kind of petroleum coke combustion desulfurization fluidized-bed combustion boiler |
| CN109827171B (en) * | 2019-03-15 | 2024-03-08 | 镇江东亚碳素焦化有限公司 | Fluidized bed boiler for petroleum coke combustion desulfurization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |