CN202521634U - Secondary air device for boiler - Google Patents
Secondary air device for boiler Download PDFInfo
- Publication number
- CN202521634U CN202521634U CN2012201909747U CN201220190974U CN202521634U CN 202521634 U CN202521634 U CN 202521634U CN 2012201909747 U CN2012201909747 U CN 2012201909747U CN 201220190974 U CN201220190974 U CN 201220190974U CN 202521634 U CN202521634 U CN 202521634U
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- Prior art keywords
- pipe
- secondary air
- millimeters
- heat
- resisting
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- Expired - Fee Related
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Abstract
The utility model provides a set of secondary air device for an SHL10-16 steam boiler. According to the secondary air device, a part of refractory concrete is dismantled from a hogged head, so that a rear arch pipe and reinforcing steel bars are exposed; a reinforcing steel bar framework is manufactured by using heat-resisting round steel which is 10 millimeters thick, and the round steel and the rear arch pipe are connected; one end of a heat-resisting steel pipe with the diameter of 50 millimeters is closed, and the total length of the steel pipe is 200 millimeters shorter than the width of a hearth; a row of spray nozzles are welded on the steel pipe at intervals of 150 millimeters, each spray nozzle is manufactured by using a heat-resisting steel pipe with the diameter of 10 millimeters, the length of the steel pipe is 20 millimeters, and the axis of the spray nozzle downwards inclines 15 degrees; an integral secondary air duct is connected to the reinforcing steel bar framework by electric soldering, a wood pattern support is manufactured by using a wood board on the lower side of the reinforcing steel bar framework, and the reinforcing steel bar framework is poured by using refractory castings; and the secondary air duct and the spray nozzles are exposed completely and are maintained for 10 days, a wood pattern can be dismantled. The secondary air device has the advantages that the temperature of the hearth is improved obviously, the heat efficiency is high, and a blow-off phenomenon is avoided.
Description
Technical field
The utility model patent relates to the equipment on a kind of boiler; It is mounted in the overfire air device that can improve the boiler combustion operating mode in the boiler furnace; It is for the SHL10-16 steam boiler carries out improvement and design specially, and boiler hearth temperature is improved, and coal catches fire soon; Boiler output increases, and coal combustion is more complete.
Background technology
Defectives such as steam boiler SHL10-16 is unreasonable because of former design, and coal-fired ignition point takes off fire easily away from coal gate, and chamber flue gas temperature is on the low side, and phosphorus content is high in the cinder, and energy consumption is big.
Summary of the invention
The utility model patent proposes the SHL10-16 steam boiler is increased by a cover overfire air device; Concrete grammar is: remove the refractory concrete of hogging head a part of earlier; After exposing rear arch pipe and reinforcing bar; Make a framework of steel reinforcement with the heat-resisting round steel of thick 10mm again, link up with round steel and rear arch pipe again.With a quite long heat resisting pipe, diameter is 50mm, outside furnace wall, penetrates in the furnace wall; One at pipe is sealed, and the length overall of pipe in burner hearth is than the wide short 200mm of burner hearth, and interval 150mm is welded with whole row's nozzle on this root pipe; Each nozzle is to make with the heat resisting pipe of diameter 10mm, and length is 20mm, and nozzle-axis has a down dip 15 °; Whole secondary air channel is connected with electric welding on the framework of steel reinforcement made from heat-resisting round steel, makes the wooden model holder under framework of steel reinforcement with plank at last, with castable refractory it watered again; Secondary air channel and nozzle all are exposed, and can wooden model be removed after 10 days through maintenance again.
Set up a cover secondary steam wind apparatus, steam pressure control 0.3---0.35MPa scope.
Boiler furnace is after having installed overfire air device additional, and the furnace outlet temperature increases to 860 degree by the degree of 750 before transforming, and boiler slag carbon content reduces to 13% by original 30%, and boiler thermal output improves more than 5%.
This patent beneficial effect is that fire box temperature has obviously improved, and boiler thermal output is high, is difficult for taking off fire.
Description of drawings
Below in conjunction with accompanying drawing and embodiment this patent is described further.
Fig. 1 is boiler boiler structure sketch map behind reincarnate.
(1) among the figure, rear arch pipe, (2), framework of steel reinforcement, (3), nozzle, (4), secondary air channel, (5), rear arch castable refractory.
Secondary air channel
The specific embodiment
Earlier the refractory concrete of hogging head is removed a part of, expose rear arch pipe and reinforcing bar after, with framework of steel reinforcement of heat-resisting round steel making of thick 10mm, link up with round steel and rear arch pipe more again.With a quite long heat resisting pipe, diameter is 50mm, outside furnace wall, penetrates in the furnace wall; One at pipe is sealed, and the length overall of pipe in burner hearth is than the wide short 200mm of burner hearth, and interval 150mm is welded with whole row's nozzle on this root pipe; Each nozzle is to make with the heat resisting pipe of diameter 10mm, and length is 20mm, and nozzle-axis has a down dip 15 °; Whole secondary air channel is connected with electric welding on the framework of steel reinforcement made from heat-resisting round steel, makes the wooden model holder under framework of steel reinforcement with plank at last, with castable refractory it watered again; Secondary air channel and nozzle all are exposed, and can wooden model be removed after 10 days through maintenance again.
Claims (1)
1. boiler secondary air device is characterized in that: earlier the refractory concrete of hogging head is removed a part of, expose rear arch pipe and reinforcing bar after; Make a framework of steel reinforcement with the heat-resisting round steel of thick 10mm again, link up with round steel and rear arch pipe again, with a heat resisting pipe; Diameter is 50mm, and in a sealing of pipe, the pipe length overall is than the wide short 200mm of burner hearth; Interval 150mm is welded with whole row's nozzle on the pipe, and nozzle is made with the heat resisting pipe of diameter 10mm, and length is 20mm; Nozzle-axis has a down dip 15 °, and whole secondary air channel is connected on the framework of steel reinforcement with electric welding, makes the wooden model holder under framework of steel reinforcement with plank; With castable refractory it is watered, secondary air channel and nozzle all are exposed again, and can wooden model be removed after 10 days through maintenance again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201909747U CN202521634U (en) | 2012-04-23 | 2012-04-23 | Secondary air device for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201909747U CN202521634U (en) | 2012-04-23 | 2012-04-23 | Secondary air device for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202521634U true CN202521634U (en) | 2012-11-07 |
Family
ID=47104581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201909747U Expired - Fee Related CN202521634U (en) | 2012-04-23 | 2012-04-23 | Secondary air device for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202521634U (en) |
-
2012
- 2012-04-23 CN CN2012201909747U patent/CN202521634U/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: 20121107 Termination date: 20140423 |