CN202835342U - Fluid bed boiler air cover capable of preventing from residue leakage - Google Patents
Fluid bed boiler air cover capable of preventing from residue leakage Download PDFInfo
- Publication number
- CN202835342U CN202835342U CN 201220561018 CN201220561018U CN202835342U CN 202835342 U CN202835342 U CN 202835342U CN 201220561018 CN201220561018 CN 201220561018 CN 201220561018 U CN201220561018 U CN 201220561018U CN 202835342 U CN202835342 U CN 202835342U
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- Prior art keywords
- air cover
- blast cap
- fluid bed
- air
- bed boiler
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- Expired - Fee Related
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Abstract
The utility model provides a fluid bed boiler air cover capable of preventing from residue leakage. The fluid bed boiler air cover comprises an air cover capouch, a flexible blade, an air cover inner core pipe and a fixed hinge plate ring, wherein the air cover capouch is connected with the air cover inner core pipe through threads; and the fixed hinge plate ring is connected with the air cover inner core pipe through a rectangular hole arranged on the upper part of the air cover inner core pipe and is composed of six equidimensional circular ring clamping sleeve plates, and the circular ring clamping sleeve plates and a flexible blade are connected together through a pin shaft. The fluid bed boiler air cover provided by the utility model has the advantages that the design is reasonable, a bed material, residue or sand can be prevented from dropping in an air chamber through wind pressure, leaked residues are prevented from being stacked, the security of a boiler is guaranteed and the operation is economical.
Description
Technical field
The utility model relates to field of boilers, is specifically related to a kind of fluidized-bed combustion boiler blast cap of anti-leak-stopping slag
Background technology
At present, the blast cap of domestic common recirculating fluidized bed mainly is divided into several types namely: the little blast cap of mushroom-shaped; The large blast cap of bell-jar; Moreover be exactly " 7 " font guiding blast cap.Also have some other dissimilar blast caps, as: umbrella, column, arrow type etc.The characteristics of little blast cap are that the aperture of blast cap is less, and cloth wind uniformity is better, but more general because of the too small wear phenomenon that causes of its design pitch, the fuel granularity of adding domestic fluid bed generally all is wide-size distribution, and this wear phenomenon is particularly serious.The characteristics of large blast cap are that the aperture of blast cap is larger, turbulence intensity is larger after reaching critical fluidisation, the labyrinth type design is adopted again in the large wearing and tearing that therefore can effectively avoid blast cap to cause blowing of its design pitch because it is general, so the phenomenon of the return air compartment of bed material is less.The characteristics of guiding blast cap are that air-flow that furnace bottom forms is blowed to bulky grain bed material or slag near the cinder notch, to reach selectively continuous discharging slag of boiler, the return phenomenon to air compartment of bed material in use can appear, because its specific design causes the blast cap of back to blow the blast cap of front, wear phenomenon is more serious in addition.
In the design and use of air-distribution device resistance, usually adopt empirical equation namely at fluidized-bed combustion boiler: the resistance of air-distribution device accounts for about 1/3 of air-distribution device and bed resistance sum.The resistance of ubiquity air-distribution device problem less than normal in the actual motion.Air-distribution device resistance hour, air-flow will by the cross section that the bed local granule is dredged, resistance is less, cause local bed " to be blown sky ", and other local beds " be killed ".Make bed operate in labile state.Under unsure state, the concentrated phase bed is change at random under fluid bed and 2 states of fixed bed, and burning is pulsed, and the fluidized-bed combustion boiler of wide-size distribution, very large fluctuation pressure occurs in the fuel combustion meeting.When combustion pulsation pressure during greater than the resistance of air-distribution device blast cap will leak slag.
Little for the air-distribution device resistance, the pulsation of burning occurs, the leakage slag problem of generation, domestic some unit installs restriction sleeve additional usually in the core pipe of blast cap, increase the resistance of air-distribution device with this, but causes the power consumption of blower fan to increase.Because the size of the pulsation that burning occurs size and bed height, fuel particle size, blast cap aperture, and size, the bed structure of fluidisation air quantity are relevant, the structure of existing various fluidized bed hoods, the bed material bleeds in the boiler air compartment is difficulty to avoiding occuring.
The utility model content
For overcoming above-mentioned the deficiencies in the prior art, the utility model provides a kind of fluidized-bed combustion boiler blast cap of anti-leak-stopping slag.
The utility model is achieved in that a kind of fluidized-bed combustion boiler blast cap of anti-leak-stopping slag, comprise blast cap capouch, moving vane, blast cap innermost tube and Fixed hinge ring, the blast cap capouch is connected with the blast cap innermost tube by screw thread, the Fixed hinge ring is connected with the blast cap innermost tube by the rectangular opening on blast cap innermost tube top, form by the annulus chuck plate of Fixed hinge ring by six equidimensions, link together by bearing pin between annulus chuck plate and the moving vane.
The utility model is reasonable in design, can stop a material, slag or sand to be fallen in the air compartment by the fluctuation of blast, avoids leak slag muck long-pending, guarantees boiler safety, economical operation.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is Fixed hinge structure of rings schematic diagram.
The specific embodiment
The invention will be further described below in conjunction with upper Figure of description:
As shown in the figure, a kind of fluidized-bed combustion boiler blast cap of anti-leak-stopping slag, comprise blast cap capouch 1, moving vane 2, blast cap innermost tube 3 and Fixed hinge ring 4, blast cap capouch 1 is connected with blast cap innermost tube 3 by screw thread, Fixed hinge ring 4 is connected with blast cap innermost tube 3 by the rectangular opening on blast cap innermost tube 3 tops, form by the annulus chuck plate 5 of Fixed hinge ring 4 by six equidimensions, link together by bearing pin between annulus chuck plate 5 and the moving vane 2.
The utility model is reasonable in design, can stop a material, slag or sand to be fallen in the air compartment by the fluctuation of blast, avoids leak slag muck long-pending, guarantees boiler safety, economical operation.
Total circulation area of 6 rectangle ventholes that open innermost tube described in the utility model upper end equals the area of innermost tube internal diameter.The outside of the rectangle venthole of innermost tube upper end, i.e. the lower end of 6 rectangle ventholes is equipped with the blade of the movable hinge axles of 6 bands.Behind the internal diameter and rectangle venthole of a wind by the innermost tube of blast cap from the boiler air compartment during normal operation, the passage that consists of of the internal diameter by innermost tube and blast cap outer cover cap again is evenly arranged some apertures of giving vent to anger of (single) in burner hearth to the bottom of blast cap capouch.
When the design resistance of blast cap relative with the actual motion resistance when less than normal, or the pressure oscillation of the inside of air compartment is when larger, produce thus combustion pulsation namely: combustion pulsation pressure is during greater than the resistance of blast cap, and the blast of its refluence blows the blade of 6 activities, with 6 rectangle gas outlet shutoff.Thereby stoped pulse pneumatic to flow back to the innermost tube of blast cap.Prevented that pulse pneumatic from carrying bed material or slag to the air compartment of the air distribution plate of fluid bed.
Claims (1)
1. the fluidized-bed combustion boiler blast cap of an anti-leak-stopping slag, comprise blast cap capouch (1), moving vane (2), blast cap innermost tube (3) and Fixed hinge ring (4), it is characterized in that: blast cap capouch (1) is connected with blast cap innermost tube (3) by screw thread, Fixed hinge ring (4) is connected with blast cap innermost tube (3) by the rectangular opening on blast cap innermost tube (3) top, form by the annulus chuck plate (5) of Fixed hinge ring (4) by six equidimensions, link together by bearing pin between annulus chuck plate (5) and the moving vane (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561018 CN202835342U (en) | 2012-10-30 | 2012-10-30 | Fluid bed boiler air cover capable of preventing from residue leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561018 CN202835342U (en) | 2012-10-30 | 2012-10-30 | Fluid bed boiler air cover capable of preventing from residue leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202835342U true CN202835342U (en) | 2013-03-27 |
Family
ID=47947036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561018 Expired - Fee Related CN202835342U (en) | 2012-10-30 | 2012-10-30 | Fluid bed boiler air cover capable of preventing from residue leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202835342U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090940A (en) * | 2016-08-15 | 2016-11-09 | 北京中科通用能源环保有限责任公司 | Umbrella fluidization hood and incinerator |
| CN108800115A (en) * | 2018-07-09 | 2018-11-13 | 杭州启澄科技有限公司 | A kind of Wind cap for boiler that power plant field uses |
-
2012
- 2012-10-30 CN CN 201220561018 patent/CN202835342U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090940A (en) * | 2016-08-15 | 2016-11-09 | 北京中科通用能源环保有限责任公司 | Umbrella fluidization hood and incinerator |
| CN106090940B (en) * | 2016-08-15 | 2018-07-17 | 北京中科通用能源环保有限责任公司 | Umbrella fluidization hood and waste incinerator |
| CN108800115A (en) * | 2018-07-09 | 2018-11-13 | 杭州启澄科技有限公司 | A kind of Wind cap for boiler that power plant field uses |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131030 |