CN201262393Y - Dry-type bottom ignition device of circulating fluidized bed boiler - Google Patents
Dry-type bottom ignition device of circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN201262393Y CN201262393Y CNU2008201484810U CN200820148481U CN201262393Y CN 201262393 Y CN201262393 Y CN 201262393Y CN U2008201484810 U CNU2008201484810 U CN U2008201484810U CN 200820148481 U CN200820148481 U CN 200820148481U CN 201262393 Y CN201262393 Y CN 201262393Y
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- China
- Prior art keywords
- distribution plate
- air distribution
- air
- air compartment
- pipe joint
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- Expired - Fee Related
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Abstract
The utility model relates to a dry ignition device under bed of a circulating fluidized bed boiler, comprising a supporting frame, a grid plate and a wind chamber which are arranged on the supporting frame, and an igniter, wherein, the inner wall of the wind chamber and the upper plane and the lower plane of a steel plate of the grid plate are respectively covered with fireproof layers. A plurality of ignition holes are arranged on the grid plate and each ignition hole is internally loaded with a hood and pipe joint. As the heating surfaces of the grid plate and the wind chamber are covered with the fireproof layers and do not contact with flames so as to lead the wind chamber to have temperature high enough for igniting the fuel. Therefore, a cooling system is saved, and heat can be fully utilized in the ignition process; simultaneously, the grid plate has simple structure and convenient installation, and is safe and durable; and the whole dry ignition device under bed of the circulating fluidized bed boiler reduces the costs of production and operation, simultaneously when ensuring the working efficiency.
Description
Technical field
The utility model relates to a kind of CFBB, relates in particular to a kind of dry type ignition under bed device of CFBB.
Background technology
Usually CFBB adopts bed down during the oil drop fire, because of material can not be subjected to the direct baking of thermal-flame, has to adopt water-cooled mode to be lowered the temperature.General cooling method has two kinds, the heating surface of first air compartment and air distribution plate is formed by the membrane wall that the pipe that is marked with recirculated water, arranges side by side constitutes, between the pipe of air distribution plate, blast cap is set, upper pouring flame retardant coating at air distribution plate, but place at air compartment set-point firearm and air inlet, need the pipe of arranging be bent or the processing of having loose bowels according to the requirement of institute's spacing, make design, make all more complicated, workload and work difficulty that equipment is installed are also bigger.It two is interlayers of making hollow with steel plate, interior the flowing by water of interlayer lowered the temperature, but when on the air distribution plate at hollow sandwich the blast cap that much passes interlayer being set, in order to guarantee the sealing of interlayer, welding quality when blast cap is installed has very high requirement, so manufacturing process complexity, cost height, workload are big.
Summary of the invention
The purpose of this utility model provides and does not a kind ofly need with water cooling mode cooling, simple in structure, easy for installation safety durable and CFBB dry type ignition under bed device with low cost.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: this CFBB dry type ignition under bed device comprises bracing frame and is arranged on air distribution plate and air compartment on the bracing frame, air distribution plate is positioned at the last plane of air compartment, form the casing of sealing with air compartment, end at air compartment is provided with igniter, the other end at air compartment is provided with air inlet, described air distribution plate comprises steel plate that is fixed on the bracing frame and the flame retardant coating that covers the upper and lower plane of steel plate respectively, and air distribution plate is provided with fire hole; On the inwall of air compartment, also be coated with flame retardant coating, on air compartment, also be provided with the slag dropping tube that runs through air distribution plate and air compartment base plate.
The described fire hole that is arranged on the air distribution plate comprises and is that rule distributes, is vertically fixed on the blast cap on the air distribution plate that the upper end of blast cap is higher than the last plane of air distribution plate, and blast cap is provided with axially extending bore; The described air distribution plate that runs through is also at least 2 of vertical settings with the slag dropping tube of air compartment base plate.
Described fire hole also comprises pipe joint, the position of each pipe joint is corresponding with blast cap, the upper end of pipe joint is welded on the bottom surface of air distribution plate steel plate, the lower end of pipe joint is connected with the pipe nut, the end face of pipe nut contacts with the flame retardant coating on the air distribution plate bottom surface, and blast cap and pipe joint are provided with axially extending bore; Described slag dropping tube is 2～6.
The firing tip of described igniter is connected with the sidewall of air compartment one end bottom, and igniter is provided with suspended structure.
Because all be coated with flame retardant coating on the inwall of the upper and lower plane of air distribution plate and air compartment, when lowering the temperature without water cooling mode, locular wall also can tolerate the high temperature when lighting a fire.Again because of air distribution plate is one deck steel plate, on steel plate fixedly during blast cap processing technology simple, easy for installation, make not only safety durable of this CFBB dry type ignition under bed device, and simple in structure, with low cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
This CFBB dry type ignition under bed device mainly comprises bracing frame 8 and is arranged on air distribution plate, air compartment 6 and igniter 7 on the bracing frame.Bracing frame 8 is placed on the boiler foundation, air compartment 6 is placed on the bracing frame 8, the upper support plane of air compartment 6 is connected with steel plate 4 on the air distribution plate by flange and asbestos board, air distribution plate is formed the casing of sealing with air compartment, air compartment 6 is formed by the steel plate butt joint, has through hole on the locular wall of air compartment 6 bottoms one end, is provided with igniter 7 in the through hole, igniter 7 is provided with suspended structure, and igniter 7 is suspended in the boiler foundation by suspended structure.The other end at air compartment 6 is provided with air inlet 5.Be coated with flame retardant coating 2 on the upper and lower plane of air distribution plate steel plate 4 and on the inwall of air compartment 6 respectively, flame retardant coating 2 is smeared by refractory material on the heating surface that covers locular wall and is constituted.Air distribution plate is provided with and is a plurality of fire holes that rule distributes, and the effect of fire hole is the flue gas that the thermal-flame that igniter 7 is lighted in air compartment produces to be incorporated into light in the fire coal that is placed on the air distribution plate upper surface and heat.Each fire hole comprise the blast cap 1 that is vertically fixed on the air distribution plate steel plate 4 and with the corresponding pipe joint 3 of quantity and position of blast cap 1.Blast cap 1 is made by refractory metal, by pressing or be weldingly fixed on the steel plate 4, the effect of blast cap 1 is to avoid flame directly to contact with steel plate 4 in the air distribution plate, lights fire coal in order to be beneficial to, and the last plane that the upper end of blast cap 1 is higher than air distribution plate is the upper surface of flame retardant coating 2 on the steel plate 4.The upper end of pipe joint 3 is welded on the bottom surface of air distribution plate steel plate 4, the lower end of pipe joint 3 is connected with the pipe nut, the end face of pipe nut contacts with the flame retardant coating 2 on steel plate 4 bottom surfaces, and the effect of pipe joint 3 is to make the following flame retardant coating of air distribution plate obtain further fixing by the pipe nut.Blast cap 1 and pipe joint 3 are provided with axially extending bore.For the ease of the cleaning slag, on air compartment 6, also be provided with the slag dropping tube 9 that vertically runs through air distribution plate and air compartment base plate.In the present embodiment, described slag dropping tube 9 is set to 2.In addition, quantity that also can slag dropping tube is set to 3～6.Can transport by travelling bogie by the cinder that slag dropping tube 9 falls.
Its operation principle is: during ignition of the boiler, by the flame heat of igniter 7 ejection the hot blast that enters by air inlet 5, hot blast improves fuel temperature and fire fuel by blast cap 1 and fuel mix.Owing on the inwall of the upper and lower plane of air distribution plate and air compartment, all be coated with flame retardant coating 2, do not contact with flame, make can have sufficiently high temperature in the air compartment and come fire fuel.So both save cooling system, the heat in the whole ignition process is fully used, when guaranteeing operating efficiency, reduced the cost of making and moving.
Claims (4)
1, a kind of CFBB dry type ignition under bed device, comprise bracing frame and be arranged on air distribution plate and air compartment on the bracing frame, air distribution plate is positioned at the last plane of air compartment, form the casing of sealing with air compartment, end at air compartment is provided with igniter, the other end at air compartment is provided with air inlet, it is characterized in that: described air distribution plate comprises steel plate that is fixed on the bracing frame and the flame retardant coating that covers the upper and lower plane of steel plate respectively, and air distribution plate is provided with fire hole; On the inwall of air compartment, also be coated with flame retardant coating, on air compartment, also be provided with the slag dropping tube that runs through air distribution plate and air compartment base plate.
2, CFBB dry type ignition under bed device according to claim 1, it is characterized in that: the described fire hole that is arranged on the air distribution plate comprises and is that rule distributes, is vertically fixed on the blast cap on the air distribution plate, the upper end of blast cap is higher than the last plane of air distribution plate, and blast cap is provided with axially extending bore; The described air distribution plate that runs through is also at least 2 of vertical settings with the slag dropping tube of air compartment base plate.
3, CFBB dry type ignition under bed device according to claim 2, it is characterized in that: described fire hole also comprises pipe joint, the position of each pipe joint is corresponding with blast cap, the upper end of pipe joint is welded on the bottom surface of air distribution plate steel plate, the lower end of pipe joint is connected with the pipe nut, the end face of pipe nut contacts with the flame retardant coating on the air distribution plate bottom surface, and blast cap and pipe joint are provided with axially extending bore; Described slag dropping tube is 2～6.
4, CFBB dry type ignition under bed device according to claim 3, it is characterized in that: the firing tip of described igniter is connected with the sidewall of air compartment one end bottom, and igniter is provided with suspended structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201484810U CN201262393Y (en) | 2008-08-12 | 2008-08-12 | Dry-type bottom ignition device of circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201484810U CN201262393Y (en) | 2008-08-12 | 2008-08-12 | Dry-type bottom ignition device of circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262393Y true CN201262393Y (en) | 2009-06-24 |
Family
ID=40808868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201484810U Expired - Fee Related CN201262393Y (en) | 2008-08-12 | 2008-08-12 | Dry-type bottom ignition device of circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262393Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287828A (en) * | 2011-07-22 | 2011-12-21 | 东方电气集团东方锅炉股份有限公司 | Air-channel ignition burner |
| CN104791779A (en) * | 2015-04-16 | 2015-07-22 | 无锡锡能锅炉有限公司 | Ignition-under-bed combustion device with air cooling structure for circulating fluidized bed boiler |
| CN106147877A (en) * | 2016-07-19 | 2016-11-23 | 杭州燃油锅炉有限公司 | A kind of Circulating Fluidized Bed Gasifier For Biomass air-distribution device |
-
2008
- 2008-08-12 CN CNU2008201484810U patent/CN201262393Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287828A (en) * | 2011-07-22 | 2011-12-21 | 东方电气集团东方锅炉股份有限公司 | Air-channel ignition burner |
| CN104791779A (en) * | 2015-04-16 | 2015-07-22 | 无锡锡能锅炉有限公司 | Ignition-under-bed combustion device with air cooling structure for circulating fluidized bed boiler |
| CN106147877A (en) * | 2016-07-19 | 2016-11-23 | 杭州燃油锅炉有限公司 | A kind of Circulating Fluidized Bed Gasifier For Biomass air-distribution device |
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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: 20090624 Termination date: 20130812 |