CN103939894B - A kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap - Google Patents
A kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap Download PDFInfo
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- CN103939894B CN103939894B CN201410102542.XA CN201410102542A CN103939894B CN 103939894 B CN103939894 B CN 103939894B CN 201410102542 A CN201410102542 A CN 201410102542A CN 103939894 B CN103939894 B CN 103939894B
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Abstract
The invention discloses a kind of 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.The lower end of blast pipe is fixed on air distribution plate hole, and the upper end blast pipe cover closure of blast pipe, the side of blast pipe has some air-out apertures; The top of blast pipe cover plate is welded with rotating shaft, and rotating shaft is processed with internal thread, and thread connection has screw mandrel nut; Air duct is hollow shell, and upper and lower both ends are end plate with holes, is matched in clearance between the hole of upper head plate and rotating shaft, between the hole of bottom plate and blast pipe; Gap is had between the upper surface of upper head plate and the nut lower surface of screw mandrel nut; The hypomere of air duct is circumferentially with one and irises out air holes.Instant invention overcomes the defect that inconvenience changed by traditional blast cap, there is advantages such as being convenient to dismounting and change, saving replacement cost, enhancing the empir-ical formulation of material, not easily block, abrasionproof is durable more.
Description
Technical field
The present invention relates to a kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap for boiler combustion field.
Background technology
Current Application comparison widely fluidized-bed combustion boiler blast cap roughly has following several large class: 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, the structure having again some partial modifications to design in some large class.
Above listed a few class blast cap, all adopt monolithic construction design mostly, that is: by blast cap head and blast pipe integrally welded, or adopt integral material processing (turning, milling, boring), the blast pipe lower end grafting of blast cap is welded on boiler grid plate pore, when blast cap damages, the refractory material of welding position must be dug up and cut away old weld seam, change whole blast cap, re-start to weld and mend and fill out refractory material, this situation can destroy the refractory masses on air distribution plate, and maintain and replace workload is large, cost is high.Minority blast cap is only had to make an exception, such as there is a kind of turret head blast cap, belong to split-type structural design, that is: adopt screw thread blast cap head and blast pipe to be connected, at blast pipe upper end threading, blast cap head endoporus machining internal thread, during installation, blast cap headgear is tightened in blast pipe upper end, then can be backed out replacing when blast cap head is damaged, do not destroy flame retardant coating, keep in repair more convenient.But current existing blast cap seldom considers that abrasion-proof structure designs, exhaust vent is all designed to straight hole, easily blocked mostly, and general service life is not long.
In a word, there is such or such deficiency in the above cited existing blast cap of several classes all separately: the inconvenience dismounting had, what have is not wear-resisting, the easy blocking exhaust vent had, or above several deficiency haves both at the same time.
Summary of the invention
Wind cap for boiler for conventional monolithic structural design is not easy to the technical problem of dismounting and change when keeping in repair, the object of this invention is to provide a kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap, be convenient to dismounting and change.
The technical solution used in the present invention 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 blast pipe cover closure of blast pipe, the side of blast pipe has some air-out apertures; The top of described blast pipe cover plate is welded with rotating shaft, and rotating shaft is processed with internal thread, 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 through the hole of bottom plate, and is matched in clearance between the hole of upper head plate and rotating shaft, between the hole of bottom plate and blast pipe; Gap is had between the upper surface of described upper head plate and the nut lower surface of screw mandrel nut; The hypomere of described air duct is circumferentially with one and irises out air holes.
Described blast pipe and rotating shaft and screw mandrel nut coaxial line.
Further, described rotating shaft is solid spindle, and 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 invention adopts detachable rotary type structure to add that abrasionproof designs, not only overcome the defect that inconvenience changed by traditional blast cap, and add rotation and abrasionproof function, enhance the empir-ical formulation of material on air distribution plate, form cross eddy formula goods fluid, like this, what just define in longitudinal direction (short transverse) and transverse direction (horizontal direction) both direction is ciculation fluidized simultaneously, greatly strengthen mixing of materials degree, thus improve efficiency of combustion, the energy-saving and emission-reduction of boiler, produce good environmental protection and economy benefit.There is advantages such as being convenient to dismounting and change, saving replacement cost, enhancing the empir-ical formulation of material, not easily block, abrasionproof is durable more.
Accompanying drawing explanation
Fig. 1 is sectional view of the present invention;
Fig. 2 is outside drawing of the present invention;
Fig. 3 is perspective view of the present invention;
Fig. 4 is top view of the present invention.
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 is protruding.
Detailed description of the invention
In FIG, blast pipe 1 upper end is by blast pipe cover plate 3 welded closure, and on blast pipe 1 epimere side, circumference has some exhaust vents; Blast pipe cover plate 3 has central through hole, and rotating shaft 4 lower end to be plugged on its through hole and to be welded to connect; The two end plates up and down of air duct 2 is provided with central through hole, during assembling, the upper head plate central through hole of air duct 2 is inserted in rotating shaft 4 upper end, the upper head plate of air duct 2 is held by the annular boss in rotating shaft 4 stage casing, be matched in clearance between air duct 2 upper head plate through hole and rotating shaft 4, air duct 2 bottom plate through hole and blast pipe 1 outer surface are matched in clearance, the nut lower surface of air duct 2 upper head plate upper surface and screw mandrel nut 5 has gap, the air-out in gap everywhere forms natural abrasionproof air cushion layer, can prevent from wearing and tearing between the parts that match; The hypomere circumference of air duct 2 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 epimere is processed with internal thread, and screw mandrel nut 5 grafting thereon and be attached thereto by screw thread.Formed blast cap entirety together with upper-part, air duct 2 can be changed easily 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, the First air of air compartment is entered by blast pipe 1 lower port, air-out aperture via blast pipe 1 epimere penetrates, then the cavity between blast pipe 1 and air duct 2 is entered, direction turn back after directive air duct 2 internal face to the injection of declivity circumference, then penetrates via the exhaust vent 6 of air duct 2 hypomere circumference horizontal tilt, enter bed material gap.Because air duct 2 hypomere exhaust vent 6 has certain circumferential horizontal tilt angle, so the propulsive thrust of air-out can be used, promote air duct 2 to rotate, strong rotating jet disturbance is transversely formed so just at bed material, not only enhance the mixing of First air and grate material, improve efficiency of combustion, and exhaust vent is not easily blocked.
In order to avoid wearing and tearing, abrasion-proof structure design has been carried out: its face of cylinder is designed with longitudinal abrasionproof fin 7 at air duct 2 outer surface, upper surface devises brachycephalic abrasionproof projection 8, whole air duct adopts wear-resistant cast iron material monoblock cast to form, and enhances the abrasionproof performance of blast cap, extends the examine and replace cycle.
Claims (5)
1. one kind detachably rotates 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 blast pipe cover closure of blast pipe, the side of blast pipe has some air-out apertures; The top of described blast pipe cover plate is welded with rotating shaft, and rotating shaft is processed with internal thread, 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 through the hole of bottom plate, and is matched in clearance between the hole of upper head plate and rotating shaft, between the hole of bottom plate and blast pipe; Gap is had between the upper surface of described upper head plate and the nut lower surface of screw mandrel nut; The hypomere of described air duct is circumferentially with one and irises out air holes; Described exhaust vent has certain horizontal tilt angle.
2. one according to claim 1 detachably rotates 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 detachably rotates 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 the upper head plate of air duct held by boss.
4. one according to claim 1 detachably rotates 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. detachably rotate wear-resistance fluidized-bed combustion boiler blast cap according to the one one of Claims 1-4 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 |
|---|---|---|---|
| CN201410102542.XA CN103939894B (en) | 2014-03-19 | 2014-03-19 | A kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410102542.XA CN103939894B (en) | 2014-03-19 | 2014-03-19 | A kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap |
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| Publication Number | Publication Date |
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| CN103939894A CN103939894A (en) | 2014-07-23 |
| CN103939894B true CN103939894B (en) | 2016-03-23 |
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| CN201410102542.XA Active CN103939894B (en) | 2014-03-19 | 2014-03-19 | A kind of detachable rotation wear-resistance fluidized-bed combustion boiler blast cap |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153030A1 (en) * | 2018-02-12 | 2019-08-15 | Evernal Technology Pte Ltd | Boiler nozzle and air distributor |
| CN108826282B (en) * | 2018-07-17 | 2019-12-20 | 丁杨洋 | Anti-blocking type hood used on boiler in power industry |
| KR102153032B1 (en) * | 2019-11-13 | 2020-09-07 | 한전케이피에스 주식회사 | An air-nozzle of circulating fluidized bed boiler |
| KR102221563B1 (en) * | 2020-04-23 | 2021-03-02 | 한전케이피에스 주식회사 | An air-nozzle of circulating fluidized bed boiler |
| CN111720817A (en) * | 2020-06-23 | 2020-09-29 | 杭州航民小城热电有限公司 | Hood structure and circulating fluidized bed air supply system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH660561A5 (en) * | 1982-08-30 | 1987-05-15 | Escher Wyss Gmbh | RING CLEANING NOZZLE AND THEIR USE IN A FLUID BED DRYER. |
| JP3779771B2 (en) * | 1996-06-17 | 2006-05-31 | 株式会社タクマ | Aeration nozzle for fluidized bed |
| CN101251252A (en) * | 2008-04-17 | 2008-08-27 | 无锡太湖锅炉有限公司 | Swirling eddy defluvium-proof kirtle |
| CN101363621B (en) * | 2008-09-05 | 2010-09-22 | 锦州爱斯特种钢铸造有限公司 | Boiler grid plate hood for circulating fluid bed |
| CN203784937U (en) * | 2014-03-19 | 2014-08-20 | 南京凯盛开能环保能源有限公司 | Dismountable rotating abrasion-proof fluidized bed boiler hood |
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