CN203128605U - Blast furnace coal injection air inlet - Google Patents
Blast furnace coal injection air inlet Download PDFInfo
- Publication number
- CN203128605U CN203128605U CN 201320092663 CN201320092663U CN203128605U CN 203128605 U CN203128605 U CN 203128605U CN 201320092663 CN201320092663 CN 201320092663 CN 201320092663 U CN201320092663 U CN 201320092663U CN 203128605 U CN203128605 U CN 203128605U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- air port
- coal injection
- blast furnace
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a blast furnace coal injection air inlet. Both an inner barrel and an outer barrel of the air inlet are in a conical shape, the wall of the inner barrel forms an angle of 10 to 15 degrees with the axis of the inner barrel, and the wall of the outer barrel of the air inlet forms an angle of 5 to 10 degrees with the axis of the inner barrel. According to the blast furnace coal injection air inlet, by changing the shape of the inner wall of the air inlet, the cross section of the air inlet in the direction facing the inside of a furnace is gradually increased, so that the requirement that blown coal stock is increased can be met, and the service life of the air inlet can be prolonged.
Description
Technical field
The utility model relates to iron-smelting blast furnace, and particularly a kind of pulverized coal injection is used the air port.
Background technology
Blast-furnace tuyere is the visual plant to blast furnace supplying high temperature air, the good and bad production that directly influences blast furnace of its performance, and the length in its life-span influences cost and the operational continuity of product.Product all adopted the double-cylinder type structure in the past, and namely inner core is the high temperature air that enters blast furnace, and the passage between urceolus and the inner core leads to water coolant, with cooling wall, made the high performance material of the general employing of material in air port.Inner core be shaped as round shape, being shaped as of urceolus is round table-like.During pulverized coal injection, spray gun in the air port, the coal thigh air port of grinding away easily.
The utility model content
Technical problem to be solved in the utility model provides a kind of wear-resistant pulverized coal injection strong, long service life and uses the air port.
For solving the problems of the technologies described above, the utility model provides a kind of pulverized coal injection to use the air port, and the shape of its air port inner/outer tube is truncated cone-shaped.
Further, the inner tube wall in described air port becomes 10 °～15 ° angles with the inner core axle, and the wall of the outer-rotor in air port becomes 5 °～10 ° angles with the inner core axle.
A kind of pulverized coal injection that the utility model provides is used the air port, by changing the shape of air port inwall, makes toward the air port sectional area of the interior direction of stove to increase gradually, becomes big needs to adapt to the injection coal thigh, thereby prolongs the air port life-span.
Description of drawings
A kind of pulverized coal injection that Fig. 1 provides for the utility model embodiment sectional view in air port.
A kind of pulverized coal injection that Fig. 2 provides for the utility model embodiment A-A sectional view in air port.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of pulverized coal injection that the utility model embodiment provides is used the air port, and the shape of its air port inner core 1 and urceolus 2 is truncated cone-shaped.Wherein, the angle 3 that the inner tube wall in air port becomes with the inner core axle is 10 °～15 °, and the angle 4 that the wall of the outer-rotor in air port becomes with the inner core axle is 5 °～10 °.
A kind of pulverized coal injection that the utility model embodiment provides is as follows with the making method in air port:
1, according to the design needs, in 10 °～15 ° scope, determine the angle of air port inwall round platform, in 5 °～10 ° scope, determine the angle of air port outer wall round platform, determine the length in air port and the diameter (osculum place) of upper surface, air port then, determine inwall lower surface, air port diameter by calculating.
2, determine the relevant sand mold size that inwall is used in casting according to the diameter of the upper and lower end face that calculates.
3, cast the product that just can obtain needs by the sand mold size of making formulation again.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to example the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (2)
1. a pulverized coal injection is used the air port, it is characterized in that: the shape of described air port inner/outer tube is truncated cone-shaped.
2. pulverized coal injection according to claim 1 is used the air port, it is characterized in that: the inner tube wall in described air port becomes 10 °～15 ° angles with the inner core axle, and the wall of the outer-rotor in air port becomes 5 °～10 ° angles with the inner core axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320092663 CN203128605U (en) | 2013-02-28 | 2013-02-28 | Blast furnace coal injection air inlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320092663 CN203128605U (en) | 2013-02-28 | 2013-02-28 | Blast furnace coal injection air inlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203128605U true CN203128605U (en) | 2013-08-14 |
Family
ID=48936601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320092663 Expired - Lifetime CN203128605U (en) | 2013-02-28 | 2013-02-28 | Blast furnace coal injection air inlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203128605U (en) |
-
2013
- 2013-02-28 CN CN 201320092663 patent/CN203128605U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: SHOUGANG GROUP Co.,Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: SHOUGANG Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |