CN202081113U - Dual-medium guide compound coal injection gun - Google Patents
Dual-medium guide compound coal injection gun Download PDFInfo
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- CN202081113U CN202081113U CN2011201092093U CN201120109209U CN202081113U CN 202081113 U CN202081113 U CN 202081113U CN 2011201092093 U CN2011201092093 U CN 2011201092093U CN 201120109209 U CN201120109209 U CN 201120109209U CN 202081113 U CN202081113 U CN 202081113U
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Abstract
The utility model relates to a dual-medium guide compound coal injection gun. The technical scheme is as follows: the dual-medium guide compound coal injection gun comprises a double-layer pipeline structure; an inner cavity is a coal dust channel; a clamping cavity between the two layers is a combustible gas medium channel; the inner and outer layers of pipelines of the double-layer pipeline structure are coaxial; the radial dimension of the combustible gas medium channel is identical; the coal dust channel comprises a main channel and a guide channel; and the included angle Alpha of the central line of the main channel and the central line of the guide channel is 7-15 degrees. The benefits are as follows: the structural design is reasonable, the shake-proof effect is fine; while blowing coal dust, the gun additionally blows gas or other media beneficial to the combustion of the coal dust so that the coal dust combusts more fully and favorably rushes to a high temperature rotating area so that intra-furnace iron-making temperature is improved, energy is saved and iron-making cost is reduced; the guide channel changes the direction of a coal dust outlet so that the injection direction of the coal dust is parallel to the axial direction of a fire tube, and erosive wear against a tiny tuyere sleeve is relieved. The injection gun has the characteristics of reducing energy and accessory consumption, lowering production cost, improving the environment and the like.
Description
Technical field
The utility model relates to a kind of auxiliary equipment of iron-smelting blast furnace coal injection system, relates in particular to a kind of pair of medium compound coal spouting gun that leads.
Background technology
As iron work, iron-smelting blast furnace is the big power consumer, reduce one of important aspect of ironmaking cost, reduce coke ratio exactly, improve injecting coal quantity, but along with the further raising of single rifle injecting coal quantity, after to a certain degree, cause burning insufficient on the contrary, rate of combustion reduces the further raising that has hindered injecting coal quantity.
Summary of the invention
The utility model is at the existing in prior technology shortcoming, the technical scheme of compound coal spouting gun and two media that a kind of reasonable in design is provided lead, this pair medium compound spray gun that leads, in coal injection, increase and blow coal gas or other helps the medium of coal dust firing, coal dust is burnt more fully, be beneficial to coal dust and pour the high temperature district of circling round, improved ironmaking temperature in the stove, save energy reduces ironmaking cost; Guide channel changes direction with discharge, makes coal dust injection direction and fire tube axially parallel, has reduced the erosive wear to the air port, reduces the formation that the air port leaks, and has the energy of reduction and accessory consumption, reduces production costs, and improves characteristics such as environment.
The utility model is realized by following technical measures: a kind of pair of medium compound coal spouting gun that leads, it comprises the double-skin duct structure, inner chamber is the coal dust passage, folder chamber between two-layer is the inflammable gas medium channel, the internal layer and the outer layer pipe of described double-skin duct structure are coaxial, the radial dimension of described inflammable gas medium channel is identical, and described coal dust passage comprises main channel and guide channel, and the medullary ray angle α of the medullary ray of described main channel and guide channel is 7～15 degree.
Concrete characteristics of the present utility model also have, and the outlet of above-mentioned guide channel is positioned on the end face of rifle body.
Also be provided with sealing sheath on the above-mentioned outer layer pipe.
The front and back end of above-mentioned sealing sheath is fixedly supported on the outer layer pipe by preceding support ring and back support ring respectively.
Above-mentioned outer layer pipe is provided with the adjustment centering unit.
The beneficial effects of the utility model are: the inflammable gas medium channel feeds highly compressed coal gas or other inflammable gas, and the one, improved smelting temperature, intensity; The 2nd, the coal gas layer is wrapped in the coal dust that sprays into cupola well at a high speed, its group that looses is diminished, and kinetic energy increases, and more helps high temperature that coal dust pours air port in the stove district of circling round, make coal dust firing more abundant, improve efficiency, cut down the consumption of energy, reduce smelting cost, improve environment, the outermost layer pipeline is a sealing sheath, and it cooperates with outer layer pipe and the front and back end sealing, cooperates with seal valve, check valve by outer protective sleeve and realizes that coal powder injection terminal system and the sealing of stove internal gas pressure do not leak.
Guide channel changes direction with discharge, makes coal dust injection direction and fire tube axially parallel, has reduced the erosive wear to the air port, reduces the formation that the air port leaks, and has the energy of reduction and accessory consumption, reduces production costs, and improves characteristics such as environment.Sealing sheath cooperates with outer layer pipe and the front and back end sealing, cooperates with seal valve, check valve by outer protective sleeve and realizes that coal powder injection terminal system and the sealing of stove internal gas pressure do not leak.
It is even with the gap that guarantees the inflammable gas medium channel to adjust centering unit realization inner layer pipe and outer layer pipe dead in line (promptly keeping right alignment), outer layer pipe back-end closure, perforate and gas service pipe welding separately.The spout end of inner layer pipe and outer layer pipe is provided with guide channel, avoids the erosive wear of the coal dust of coal spouting gun ejection to blast-furnace tuyere, reduces the formation that the air port leaks.Thereby expenses such as the consumption of high furnace accessory and maintenance, repair have been reduced greatly.
Sealing sheath cooperates with outer layer pipe and the front and back end sealing, and by the transition of this layer, inside and outside layer pipeline cooperates with check valve, seal valve, realizes that high furnace pressure does not leak outside.Between sealing sheath and seal valve, the check valve certain interval is arranged simultaneously, when guaranteeing sealing, the plug that also will be convenient to coal spouting gun is changed.Cooperate realization coal powder injection terminal system and the sealing of stove internal gas pressure not to leak with seal valve, check valve by sealing sheath.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure, 1, guide channel, 2, the main channel, 3, adjust centering unit, 4, outer layer pipe, 5, inner layer pipe, 6, preceding support ring, 7, back support ring, 8, sealing sheath, 9, airflow manifold, 10, inner layer pipe stopping valve, 11, airflow manifold stopping valve, 12, the inflammable gas medium channel, 13, wear ring.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by an embodiment, and in conjunction with it
Accompanying drawing is set forth this programme.
As shown in Figure 1, the utility model is a kind of pair of medium compound coal spouting gun that leads, it comprises the double-skin duct structure, inner chamber is the coal dust passage, folder chamber between two-layer is an inflammable gas medium channel 12, and the internal layer and the outer layer pipe of described double-skin duct structure are coaxial, and the radial dimension of described inflammable gas medium channel 12 is identical, described coal dust passage comprises main channel 2 and guide channel 1, and the medullary ray angle α of the medullary ray of described main channel 2 and guide channel 1 is 7～15 degree.The outlet of guide channel 1 is positioned on the end face of rifle body.Also be provided with sealing sheath 8 on the outer layer pipe 4, the front and back end of sealing sheath 8 is fixedly supported on the outer layer pipe 4 by preceding support ring 6 and back support ring 7 respectively, and outer layer pipe 4 is provided with adjusts centering unit 3.
The utility model can pass through existing techniques in realizing without the technical characterictic of describing, and does not repeat them here.Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection domain of the present utility model.
Claims (5)
1. two media compound coal spouting gun that leads, it comprises the double-skin duct structure, inner chamber is the coal dust passage, folder chamber between two-layer is the inflammable gas medium channel, it is characterized in that, the internal layer of described double-skin duct structure and outer layer pipe right alignment, the radial dimension of described inflammable gas medium channel is identical, described coal dust passage comprises main channel and guide channel, and the medullary ray angle α of the medullary ray of described main channel and guide channel is 7～15 degree.
2. pair medium according to claim 1 compound coal spouting gun that leads is characterized in that the outlet of described guide channel is positioned on the end face of rifle body.
3. pair medium according to claim 1 and 2 compound coal spouting gun that leads is characterized in that, also is provided with sealing sheath on the described outer layer pipe.
4. pair medium according to claim 3 compound coal spouting gun that leads is characterized in that, the front and back end of described sealing sheath is fixedly supported on the outer layer pipe by preceding support ring and back support ring respectively.
5. pair medium according to claim 1 compound coal spouting gun that leads is characterized in that described outer layer pipe is provided with the adjustment centering unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201092093U CN202081113U (en) | 2011-04-14 | 2011-04-14 | Dual-medium guide compound coal injection gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201092093U CN202081113U (en) | 2011-04-14 | 2011-04-14 | Dual-medium guide compound coal injection gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202081113U true CN202081113U (en) | 2011-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201092093U Expired - Fee Related CN202081113U (en) | 2011-04-14 | 2011-04-14 | Dual-medium guide compound coal injection gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202081113U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021217707A1 (en) * | 2020-04-30 | 2021-11-04 | 南京韬恒工业科技有限公司 | Pulverized coal injection device |
-
2011
- 2011-04-14 CN CN2011201092093U patent/CN202081113U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021217707A1 (en) * | 2020-04-30 | 2021-11-04 | 南京韬恒工业科技有限公司 | Pulverized coal injection 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: 20111221 Termination date: 20140414 |