CN203784937U - Dismountable rotating abrasion-proof fluidized bed boiler hood - Google Patents
Dismountable rotating abrasion-proof fluidized bed boiler hood Download PDFInfo
- Publication number
- CN203784937U CN203784937U CN201420125860.3U CN201420125860U CN203784937U CN 203784937 U CN203784937 U CN 203784937U CN 201420125860 U CN201420125860 U CN 201420125860U CN 203784937 U CN203784937 U CN 203784937U
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- Prior art keywords
- rotating shaft
- blast pipe
- air
- air duct
- inlet pipe
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- Withdrawn - After Issue
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model provides a dismountable rotating abrasion-proof fluidized bed boiler hood. The dismountable rotating abrasion-proof fluidized bed boiler hood comprises an air inlet pipe, an air inlet pipe cover plate, a rotating shaft, a screw rod nut and an external air barrel, wherein the lower end of the air inlet pipe is fixed in an air distributing plate hole, the upper end of the air inlet pipe is sealed by the air inlet pipe cover plate, and the side surface of the air inlet pipe is provided with multiple air outlet small holes; the rotating shaft is welded above the air inlet pipe cover plate, and an inner thread is processed on the rotating shaft and is connected with the screw rod nut; the air barrel is a hollow shell, the upper and lower end parts of the air barrel are provided with holed end plates, and a hole of the upper end plate and the rotating shaft as well as a hole of the lower end plate and the air inlet pipe are in clearance fit; a gap is formed between the upper surface of the upper end plate and the lower surface of the screw rod nut, and the circumference of the lower section of the air barrel is provided with a circle of air outlet holes. The dismountable rotating abrasion-proof fluidized bed boiler hood provided by the utility model has the advantages that a disadvantage that a traditional air cap is not convenient to change is overcome, the disassembly and change are convenient, the changing cost is saved, the horizontal mixing of materials is strengthened, the probability of blocking is low, the abrasion-proof performance and durableness are guaranteed and the like.
Description
Technical field
The utility model relates to a kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap for boiler combustion field.
Background technology
Application at present more widely fluidized-bed combustion boiler blast cap roughly has following several large classes: mushroom head blast cap, socket cap blast cap, nose cone blast cap, turret head blast cap, homalocephalus blast cap, trigonocephalia blast cap, Duckbill type blast cap, T font blast cap etc.Wherein, in some large class, there is again the structure of some local Variant Design.
Above listed a few class blast cap, all to adopt monolithic construction design mostly, that is: by integrally welded to blast cap head and blast pipe, or adopt integral material processing (turning, milling, boring), peg graft and be welded on boiler grid plate pore in the blast pipe lower end of blast cap, when blast cap damages, must dig up the refractory material of welding position and cut away old weld seam, change whole blast cap, re-start to weld and mend and fill out refractory material, this situation can be destroyed the refractory masses on air distribution plate, and maintain and replace workload is large, cost is high.Only has minority blast cap exception, for example there is a kind of turret head blast cap, belong to split-type structural design, that is: adopt screw thread that blast cap head and blast pipe are connected, at blast pipe upper end threading, blast cap head endoporus machining internal thread, when installation, blast cap headgear in blast pipe upper end and tighten, can be backed out to replacing in the time that blast cap head is damaged, do not destroy flame retardant coating, keep in repair more convenient.But current existing blast cap is seldom considered abrasion-proof structure design, exhaust vent is all designed to straight hole, easily blocked mostly, and general service life is not long.
In a word, all there is such or such deficiency in the above cited existing blast cap of several classes separately: the inconvenience dismounting having, and what have is not wear-resisting, the easy obstruction exhaust vent having, or above several deficiency haves both at the same time.
Summary of the invention
While maintenance for the Wind cap for boiler of traditional integral structure design, be not easy to the technical problem of dismounting and change, the purpose of this utility model is to provide a kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap, is convenient to dismounting and change.
The technical solution adopted in the utility model is as follows:
A kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap, comprises blast pipe, blast pipe cover plate, rotating shaft, screw mandrel nut and outside air duct.The lower end of blast pipe is fixed on air distribution plate hole, and the upper end of blast pipe blast pipe cover closure has some air-out apertures on the side of blast pipe; The top of described blast pipe cover plate is welded with rotating shaft, is processed with internal thread in rotating shaft, and thread connection has screw mandrel nut; Air duct is hollow shell, and upper and lower both ends are end plate with holes, and described rotating shaft is through the hole of upper head plate, and described blast pipe is through the hole of bottom plate, and between the hole and rotating shaft of upper head plate, be matched in clearance between the hole of bottom plate and blast pipe; Gapped between the nut lower surface of the upper surface of described upper head plate and screw mandrel nut; The hypomere of described air duct is circumferentially with a circle exhaust vent.
Described blast pipe and rotating shaft and screw mandrel nut coaxial line.
Described rotating shaft is solid spindle, and rotating shaft is provided with boss, and boss is held the upper head plate of air duct.
Further, described some air-out apertures are arranged on the epimere side of blast pipe, and air duct is hollow cylinder housing.
Further, the exhaust vent of described air duct lower end has certain horizontal tilt angle.
Further, air duct outer surface is provided with longitudinal abrasionproof fin, and the upper surface of upper head plate is provided with brachycephalic abrasionproof projection.
Blast cap of the present utility model adopts detachable rotary type structure to add abrasionproof design, not only overcome traditional blast cap and changed inconvenient defect, and rotation and abrasionproof function are increased, strengthen the horizontal mixing of material on air distribution plate, form cross eddy formula goods fluid, like this, just formed ciculation fluidized in longitudinally (short transverse) and horizontal (horizontal direction) both direction simultaneously, greatly strengthen mixing of materials degree, thereby improve efficiency of combustion, the energy-saving and emission-reduction of boiler, produced good environmental protection and economy benefit.Have be convenient to dismounting and change, save replacement cost, strengthened material horizontal mixing, the advantage such as be difficult for stopping up, abrasionproof is durable more.
Brief description of the drawings
Fig. 1 is cutaway view of the present utility model;
Fig. 2 is outside drawing of the present utility model;
Fig. 3 is perspective view of the present utility model;
Fig. 4 is top view of the present utility model.
In figure, 1-blast pipe, 2-air duct, 3-blast pipe cover plate, 4-rotating shaft, 5-screw mandrel nut, 6-exhaust vent, 7-abrasionproof fin, 8-abrasionproof projection.
Detailed description of the invention
In Fig. 1, blast pipe 1 upper end is by blast pipe cover plate 3 welded closure, and blast pipe circumferentially has some exhaust vents on 1 epimere side; Blast pipe cover plate 3 has central through hole, and rotating shaft 4 lower ends are plugged on its through hole and are welded to connect; The two end plates up and down of air duct 2 is provided with central through hole, when assembling, the upper head plate central through hole of air duct 2 is inserted in rotating shaft 4 upper ends, the upper head plate of air duct 2 is held by the annular boss in rotating shaft 4 stage casings, between air duct 2 upper head plate through holes and rotating shaft 4, it is matched in clearance, air duct 2 bottom plate through holes and blast pipe 1 outer surface are matched in clearance, the nut lower surface of air duct 2 upper head plate upper surfaces and screw mandrel nut 5 is gapped, the air-out in gap everywhere forms natural abrasionproof air cushion layer, between the parts that can prevent from matching, weares and teares; The hypomere of air duct 2 circumferentially has the exhaust vent 6 of a circle horizontal tilt, under the propulsive thrust effect of air-out, can promote air duct 2 and rotate around blast pipe 1 and rotating shaft 4; Rotating shaft 4 epimeres are processed with internal thread, and screw mandrel nut 5 is pegged graft and is attached thereto thereon and by screw thread.Form together blast cap entirety with upper-part, can change easily air duct 2 by dismounting screw mandrel nut 5.
When blast cap is installed, blast pipe 1 lower end is welded on boiler grid plate hole, below boiler grid plate, air compartment a wind is entered by blast pipe 1 lower port, air-out aperture via blast pipe 1 epimere penetrates, then enter the cavity between blast pipe 1 and air duct 2, the direction of turning back after directive air duct 2 internal faces is circumferentially sprayed to declivity, then penetrates via the exhaust vent 6 of the circumferential horizontal tilt of air duct 2 hypomere, enters bed material gap.Because air duct 2 hypomere exhaust vents 6 have certain circumferential horizontal tilt angle, so can use the propulsive thrust of air-out, promoting air duct 2 rotates, so just in the strong rotating jet disturbance of transversely forming of bed material, not only strengthen the mixing of wind and grate material, improve efficiency of combustion, and made exhaust vent be difficult for stopping up.
For fear of wearing and tearing, carry out abrasion-proof structure design at air duct 2 outer surfaces: on its face of cylinder, be designed with longitudinal abrasionproof fin 7, on upper surface, design brachycephalic abrasionproof projection 8, whole air duct adopts wear-resistant cast iron material monoblock cast to form, strengthened blast cap abrasionproof performance, extended the maintenance replacement cycle.
Claims (6)
1. a detachable rotation wear-resistance fluidized-bed combustion boiler blast cap, comprise blast pipe, blast pipe cover plate, rotating shaft, screw mandrel nut and outside air duct, it is characterized in that, the lower end of blast pipe is fixed on air distribution plate hole, the upper end of blast pipe blast pipe cover closure, has some air-out apertures on the side of blast pipe; The top of described blast pipe cover plate is welded with rotating shaft, is processed with internal thread in rotating shaft, and thread connection has screw mandrel nut; Air duct is hollow shell, and upper and lower both ends are end plate with holes, and described rotating shaft is through the hole of upper head plate, and described blast pipe is through the hole of bottom plate, and between the hole and rotating shaft of upper head plate, be matched in clearance between the hole of bottom plate and blast pipe; Gapped between the nut lower surface of the upper surface of described upper head plate and screw mandrel nut; The hypomere of described air duct is circumferentially with a circle exhaust vent.
2. one according to claim 1 is detachably rotated wear-resistance fluidized-bed combustion boiler blast cap, it is characterized in that described blast pipe and rotating shaft and screw mandrel nut coaxial line.
3. one according to claim 1 is detachably rotated wear-resistance fluidized-bed combustion boiler blast cap, it is characterized in that, described rotating shaft is solid spindle, and rotating shaft is provided with boss, and boss is held the upper head plate of air duct.
4. one according to claim 1 is detachably rotated wear-resistance fluidized-bed combustion boiler blast cap, it is characterized in that, described some air-out apertures are arranged on the epimere side of blast pipe, and described air duct is hollow cylinder housing.
5. one according to claim 1 is detachably rotated wear-resistance fluidized-bed combustion boiler blast cap, it is characterized in that, the exhaust vent of described air duct lower end has certain horizontal tilt angle.
6. detachably rotate wear-resistance fluidized-bed combustion boiler blast cap according to the one one of claim 1 to 5 Suo Shu, it is characterized in that, described air duct outer surface is provided with longitudinal abrasionproof fin, and the upper surface of upper head plate is provided with brachycephalic abrasionproof projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125860.3U CN203784937U (en) | 2014-03-19 | 2014-03-19 | Dismountable rotating abrasion-proof fluidized bed boiler hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125860.3U CN203784937U (en) | 2014-03-19 | 2014-03-19 | Dismountable rotating abrasion-proof fluidized bed boiler hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784937U true CN203784937U (en) | 2014-08-20 |
Family
ID=51321117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420125860.3U Withdrawn - After Issue CN203784937U (en) | 2014-03-19 | 2014-03-19 | Dismountable rotating abrasion-proof fluidized bed boiler hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784937U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939894A (en) * | 2014-03-19 | 2014-07-23 | 南京凯盛开能环保能源有限公司 | Detachable rotary wear-preventive fluidized bed boiler blast cap |
| CN107327841A (en) * | 2017-06-09 | 2017-11-07 | 广州市斤石电力科技有限公司 | A kind of CFBB air distribution plate component |
-
2014
- 2014-03-19 CN CN201420125860.3U patent/CN203784937U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939894A (en) * | 2014-03-19 | 2014-07-23 | 南京凯盛开能环保能源有限公司 | Detachable rotary wear-preventive fluidized bed boiler blast cap |
| CN107327841A (en) * | 2017-06-09 | 2017-11-07 | 广州市斤石电力科技有限公司 | A kind of CFBB air distribution plate component |
| CN107327841B (en) * | 2017-06-09 | 2023-07-14 | 广州市斤石电力科技有限公司 | Air distribution plate assembly of circulating fluidized bed boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140820 Effective date of abandoning: 20160323 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |