CN201028564Y - T shaped nozzle button used for circulating fluidized bed boiler - Google Patents
T shaped nozzle button used for circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN201028564Y CN201028564Y CN 200720089297 CN200720089297U CN201028564Y CN 201028564 Y CN201028564 Y CN 201028564Y CN 200720089297 CN200720089297 CN 200720089297 CN 200720089297 U CN200720089297 U CN 200720089297U CN 201028564 Y CN201028564 Y CN 201028564Y
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- air
- blast cap
- hood
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a T-shaped air hood for circulating fluidized bed boiler. The hood top of the air hood is provided with an oval cavity, and the lower part is provided with a flat trapezoid cavity, and the bottom of the air hood is provided with a circular pipe; air hood holes are arranged at the walls around the oval cavity at the hood top, and a skirt brim is arranged at the periphery below the air hood holes; the periphery of the middle of the trapezoid cavity of the air hood is also provided with the skirt brim; the circular pipe at bottom of the air hood is inserted with an air connecting pipe. The air hoods of the utility model are not easy to clamp large slag, and the air hood has reasonable layout with even air distribution, and dose not exit dead area due to larger air distribution space in any section; the utility model has small wind flow consumption, large surplus amount of load adjustment, and can reduce effectively the content of fly ash combustible materials, the power consumption rate and the abrasion of boiler device; moreover, the utility model is convenient to install without large error of installing size. When replacing the air hoods, only the air hoods at the upper part is needed to replace and not the connecting pipe at the lower part, which can save more than half of cost and time.
Description
One, technical field
The utility model relates to a kind of Industrial Boiler parts, particularly the CFBB parts of country's popularization now.
Two, background technology
CFBB does not also have ripe domestic unified modular system at present, and often each producer decides the characteristics of own equipment with the form of the chamber structure of boiler, cyclone separator, blast cap.The employed blast cap of the boiler of each producer also has nothing in common with each other; Majority is based on cylinder, and each size has diameter from 40 millimeters to 100 millimeters, the perforate of blast cap has 4 millimeters to 8 millimeters of diameters, what inclined hole was arranged also has a flat hole, perforated is arranged out, and slot is also arranged out.The wind cap that the L type is also arranged, this blast cap often are used in the bed surface of inclination and arrange, seldom use this blast cap on the fluid bed on plane.Blast cap is mounted on the air distribution plate, and air distribution plate divides two kinds of water-cooled and non-water-cooleds.And the water-cooled air distribution plate passes through because of water pipe is arranged, will allow boiled water pipe when the hole of blast cap bore to be installed, the distance between the blast cap is just big, just needs bigger air quantity and fan pressure head when operation, blow the bed material between the blast cap, make its normal fluidisation reach the requirement of operation.Compare with non-water-cooled air distribution plate relatively, on with air quantity and on the fan pressure head, all want big many, on the energy loss and also be bigger on to the equipment attrition of boiler, bigger air quantity and the pressure head of blower fan use, and after coal entered burner hearth, the fly out probability of burner hearth of fine grained increased, fine grained shortened in the burning time of burner hearth, burning time is insufficient, has increased the content of fly ash combustible material, and energy loss is big; Air quantity is big, wind speed is just high, and air quantity is big, the high particle that carries of wind speed is just big, and wind speed height, particle are the growths that is cube multiple to the wearing and tearing of equipment greatly, have so just increased the wearing and tearing to equipment significantly.
Three, summary of the invention
The technical problems to be solved in the utility model is: design the blast cap that a kind of circulating fluidized bed boiler water-cooling formula air distribution plate is used, the distance of using this blast cap effectively the water-cooled air distribution plate to be enlarged between the blast cap because of cooling water pipe makes is adjusted to rational size, fluidisation is better when making operation, moves more stable.
The technical scheme that solution the utility model technical problem is taked is: design a kind of T type blast cap, crown is an oval cavity, and the bottom is a flat trapezoidal cavity, and the bottom of blast cap is a pipe, the blast cap hole is located on the oval cavity of the crown wall all around, and the lower outer periphery is provided with the shirt rim in the blast cap hole.For the stability that guarantees blast cap with to the protection of air distribution plate, periphery also is provided with the shirt rim at the trapezoidal cavity middle part of blast cap.For ease of maintenance, the pipe and the air intake tube connector of blast cap bottom adopt socket connection.
Good effect of the present utility model is: 1, be not easy between the blast cap to press from both sides big slag, can steady in a long-term move when deslagging is reasonable, miscellaneous equipment just often, unnecessary regular blowing out clearing furnace; 2, blast cap connection and reasonable arrangement, cloth wind is even, does not exist which piece to have bigger cloth wind space to become the dead band, little with air quantity, the Load Regulation surplus capacity is big, can effectively reduce fly ash combustible material content, reduce station service power consumption rate, reduce wearing and tearing boiler plant; 3, be convenient to install, the error that installation dimension can not occur is bigger than normal; When 4, blast cap is changed, only change the blast cap of portion, need not change the tube connector of bottom, can save expense over half and time.
Four, description of drawings
Accompanying drawing 1 is a front view of the present utility model; Accompanying drawing 2 is the vertical view of Fig. 1; Accompanying drawing 3 is Fig. 1 left view.
Five, the specific embodiment
Blast cap of the present utility model is a kind of blast cap of T type structure, the crown 2 on blast cap top is an oval cavity, and the bottom is a flat trapezoidal cavity 4, and the bottom of blast cap is a pipe 6, blast cap hole 1 is located on the crown 2 oval cavitys wall all around, and 1 lower outer periphery is provided with shirt rim 3 in the blast cap hole.Trapezoidal cavity 4 middle part peripheries at blast cap also are provided with shirt rim 5; The pipe 6 of blast cap bottom adopts socket connection with the air intake tube connector.
This blast cap adopts the heat-resisting steels casting to form, 30 millimeters of crown 2 height, and shirt rim 3 has only 4 millimeters apart from blast cap hole 1, is convenient to when mounted install, and installation dimension error thing bigger than normal can not occur; When operation, the refractory matter of the bottom of can not wearing and tearing causes the ditch between the blast cap to deepen, and makes big slag deposits.The blast cap bottom is a pipe 6, with the tube connector employing socket connection of its underpart; Space between the blast cap is filled up with fire-resistant casting material during installation in the shirt rim 5 at flat trapezoidal 4 middle parts, and the shirt rim of blast cap 5 is pushed down by casting material, and blast cap can not come off.Blast cap only need be changed the blast cap of portion when damaging replacing, need not change the tube connector of bottom, can save expense over half and time.
Width according to shirt rim 3 is inserted on the air distribution plate uniformly when mounted, and spots weld on the air distribution plate, and the junction of blast cap and tube connector can monolateral spot welding, takes down so that change fashion.The space of 3 bottoms, blast cap shirt rim will be tamped with fire-resistant casting material and insulation material, with the stability that guarantees blast cap with to the protection of air distribution plate.
Claims (3)
1. a CFBB is with T type blast cap, it is characterized in that: blast cap is a T type blast cap, crown (2) is an oval cavity, the bottom is a flat trapezoidal cavity (4), the bottom of blast cap is pipe (6), blast cap hole (1) is located on the oval cavity of crown (2) wall all around, and the lower outer periphery is provided with shirt rim (3) in blast cap hole (1).
2. CFBB according to claim 1 T type blast cap is characterized in that: periphery also is provided with shirt rim (5) at trapezoidal cavity (4) middle part of blast cap.
3. CFBB according to claim 1 is characterized in that: the pipe (6) of blast cap bottom and air intake tube connector employing socket connection with T type blast cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720089297 CN201028564Y (en) | 2007-01-26 | 2007-01-26 | T shaped nozzle button used for circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720089297 CN201028564Y (en) | 2007-01-26 | 2007-01-26 | T shaped nozzle button used for circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028564Y true CN201028564Y (en) | 2008-02-27 |
Family
ID=39132776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720089297 Expired - Fee Related CN201028564Y (en) | 2007-01-26 | 2007-01-26 | T shaped nozzle button used for circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028564Y (en) |
-
2007
- 2007-01-26 CN CN 200720089297 patent/CN201028564Y/en not_active Expired - Fee Related
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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: 20080227 |