CN211471470U - Blast furnace tuyere small sleeve plugging structure - Google Patents
Blast furnace tuyere small sleeve plugging structure Download PDFInfo
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- CN211471470U CN211471470U CN201921777172.4U CN201921777172U CN211471470U CN 211471470 U CN211471470 U CN 211471470U CN 201921777172 U CN201921777172 U CN 201921777172U CN 211471470 U CN211471470 U CN 211471470U
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- tuyere
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Abstract
The utility model relates to a blast furnace tuyere small sleeve plugging structure, which belongs to the technical field of blast furnace tuyere. A blast furnace tuyere small sleeve plugging structure is characterized in that a tuyere small sleeve is provided with a conical inner cavity, the large end of the tuyere small sleeve is sealed through a plugging piece, the plugging piece is conical, the small end of the plugging piece is provided with a sealing end face, the outer diameter of the large end of the plugging piece is larger than the inner diameter of the large end of the tuyere small sleeve, the outer diameter of the small end of the plugging piece is smaller than the inner diameter of the large end of the tuyere small sleeve, the small end of the plugging piece is plugged into the tuyere small sleeve inner cavity along the axial part from the large end of the tuyere small sleeve until the plugging piece is tightly clamped on the large end of the tuyere small sleeve, and the large end of the plugging piece is exposed out of the tuyere small sleeve; the sealing layer is arranged on the outer surface of the plugging piece and seals the contact between the plugging piece and the tuyere small sleeve. This application is simple structure not only, and is practical convenient, can guarantee moreover that the stifled jail in wind gap or disclose the wind gap fast in time.
Description
Technical Field
The utility model relates to a blast furnace tuyere small sleeve plugging structure, which belongs to the technical field of blast furnace tuyere.
Background
At present, all domestic blast furnaces adopt the process operation of plugging the blast furnace tuyere in the aspects of stopping and reblowing or processing special furnace conditions. The blast furnace tuyere small sleeve is an important process part for air supply and coal injection of the iron-making blast furnace, all the tuyere small sleeves are opened in the normal production of the blast furnace, but when the condition of the blast furnace is seriously abnormal, in order to ensure certain blast kinetic energy of the blast furnace, part of the tuyere small sleeves need to be temporarily blocked; when part of the small air inlet sleeve is damaged and seriously leaks water, the small air inlet sleeve in the area is also required to be temporarily blocked in order to prevent a large amount of condensed slag iron from being formed in front of the small water-leaking air inlet sleeve to burn the small air inlet sleeve again. The traditional mode of blocking the blast furnace air inlet small sleeve is mainly to block the air inlet by using scattered amorphous refractory materials such as water stemming and the like in a manual mode, but due to the defects of the blocking materials and the difference of the technical level of an operator, the blocked air inlet small sleeve is often blown open automatically, or the blocked air inlet small sleeve is not poked when the air inlet small sleeve needs to be poked open, and the blocking materials are not arranged at the front end position of the air inlet small sleeve, so that the air inlet small sleeve is burnt out or the blast pipe is burnt through, and the serious influence is caused on the blast furnace condition and the production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a blast furnace tuyere small sleeve plugging structure aiming at the prior art, which not only has simple structure and convenient use; but also can ensure that the air opening is blocked firmly or poked open quickly in time.
The utility model provides a technical scheme that above-mentioned problem adopted does: a blast furnace tuyere small sleeve plugging structure is characterized in that a tuyere small sleeve is provided with a conical inner cavity, the large end of the tuyere small sleeve is sealed through a plugging piece, the plugging piece is conical, the small end of the plugging piece is provided with a sealing end face, the outer diameter of the large end of the plugging piece is larger than the inner diameter of the large end of the tuyere small sleeve, the outer diameter of the small end of the plugging piece is smaller than the inner diameter of the large end of the tuyere small sleeve, the small end of the plugging piece is plugged into the tuyere small sleeve inner cavity along the axial part from the large end of the tuyere small sleeve until the plugging piece is tightly clamped on the large end of the tuyere small sleeve, and the large end of the plugging piece is exposed out of the tuyere small sleeve; the sealing layer is arranged on the outer surface of the plugging piece and seals the contact between the plugging piece and the tuyere small sleeve.
The sealing layer is made of asbestos.
The plugging piece is a ceramic made piece.
The blocking piece is provided with a conical recess along the axial direction.
Compared with the prior art, the utility model has the advantages of: a blast furnace tuyere small sleeve plugging structure is characterized in that when a blast furnace stops blowing, a plugging piece is partially clamped in the tuyere small sleeve to seal a tuyere; when the blast furnace is rebleed, the steel chisel stretches into the tuyere, the sealing end face of the plugging piece can be poked through rapidly in time, and the production of the blast furnace can be recovered rapidly. This application is simple structure not only, and is practical convenient, can guarantee moreover that the stifled jail in wind gap or disclose the wind gap fast in time.
Drawings
FIG. 1 is a schematic view of a blast furnace tuyere small sleeve plugging structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a tuyere stock;
in the figure, 1 a plugging piece, 2 a sealing layer and 3 a tuyere small sleeve.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, in the present embodiment, a blast furnace tuyere small sleeve blocking structure is provided, the tuyere small sleeve has a tapered inner cavity, and a large end of the tuyere small sleeve is sealed by a blocking piece made of ceramic. The plugging piece is conical, the outer diameter D1 of the large end of the plugging piece 1 is larger than the inner diameter D2 of the large end of the tuyere small sleeve 3, the outer diameter D1 of the small end of the plugging piece 1 is smaller than the inner diameter D2 of the large end of the tuyere small sleeve 3, and the small end of the plugging piece is provided with a sealing end face. The small end of the plugging piece is plugged into the inner cavity of the small tuyere sleeve along the axial part from the large end of the small tuyere sleeve until the plugging piece is tightly clamped at the large end of the small tuyere sleeve, and the large end of the plugging piece is exposed out of the small tuyere sleeve. On the one hand, the tuyere is blocked and on the other hand, the blocking piece 1 is prevented from blowing into the blast furnace. The plugging piece 1 is provided with a conical concave part along the axial direction, and the conical concave part has the same taper as that of the plugging piece 1, so that the thickness of the sealing end part of the plugging piece 1 is thinned, and an air opening is convenient to poke. The outer surface of the plugging piece 1 is adhered with a high temperature (more than or equal to 1500 ℃) and high pressure (more than or equal to 500KPa) asbestos sealing layer 2, the asbestos sealing layer 2 is arranged between the outer surface of the plugging piece 1 and the inner surface of the tuyere small sleeve 3, soft contact between the plugging piece 1 and the tuyere small sleeve 3 is guaranteed, the sealing layer forms sealing for the contact between the plugging piece and the tuyere small sleeve, and the sealing effect is improved.
The mold of the plugging piece 1 is manufactured according to the size requirement of the tuyere small sleeve 3, and high-grade ceramic materials are put into the mold to manufacture the plugging piece 1. The manufactured plugging piece 1 is put into a baking furnace and baked according to certain temperature requirements, so that the plugging piece meets the requirements of high temperature resistance and high temperature resistance service performance.
Before the blast furnace is re-ventilated, according to the requirements of blast furnace operators, the front end of the tuyere small sleeve 3 to be blocked is filled and tamped by stemming, then the ceramic plugging piece 1 is placed into the cavity of the tuyere small sleeve 3 to be tamped, and finally the tuyere small sleeve is arranged on a tuyere device. In the process of blast furnace reblowing, according to the requirement of a blast furnace operator, when the tuyere needs to be poked open, the elbow peep hole cover of the tuyere is opened, a steel chisel extends into the tuyere, the ceramic plugging piece 1 plugged in the tuyere small sleeve 3 is poked open to allow the air to enter, the poked ceramic fragments are blown into the blast furnace, and the operation state of the tuyere is recovered. After the opening of the tuyere is confirmed, the drill steel is pulled out, and the elbow manhole cover is covered.
When the blast furnace stops blowing, part of the plugging piece 1 is tightly clamped in the tuyere small sleeve 3 to seal the tuyere; when the blast furnace is rebleed, the sealing end face of the plugging piece 1 can be poked through quickly in time, and the production of the blast furnace can be recovered quickly. This application is simple structure not only, and is practical convenient, can guarantee moreover that the stifled jail in wind gap or disclose the wind gap fast in time.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (4)
1. The utility model provides a blast furnace tuyere small sleeve block structure, tuyere small sleeve (3) have the toper inner chamber, the stub end of tuyere small sleeve (3) is sealed through shutoff piece (1), its characterized in that: the sealing and plugging piece (1) is conical, a sealing end face is arranged at the small end of the sealing and plugging piece (1), the outer diameter of the large end of the sealing and plugging piece (1) is larger than the inner diameter of the large end of the tuyere small sleeve (3), the outer diameter of the small end of the sealing and plugging piece (1) is smaller than the inner diameter of the large end of the tuyere small sleeve (3), the small end of the sealing and plugging piece (1) is plugged into the inner cavity of the tuyere small sleeve (3) from the large end of the tuyere small sleeve (3) along the axial part until the sealing and plugging piece (1) is clamped at the large end of the tuyere small sleeve (3), and the large end of the sealing and plugging piece (1) is exposed out of the tuyere small sleeve (3); the outer surface of the plugging piece (1) is provided with a sealing layer (2), and the sealing layer (2) seals the contact between the plugging piece (1) and the tuyere small sleeve (3).
2. The blast furnace tuyere small sleeve blocking structure of claim 1, wherein: the sealing layer (2) is made of asbestos.
3. The blast furnace tuyere small sleeve blocking structure of claim 1, wherein: the plugging piece (1) is a ceramic made piece.
4. The blast furnace tuyere small sleeve blocking structure of claim 1, wherein: the plugging piece (1) is provided with a conical concave part along the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921777172.4U CN211471470U (en) | 2019-10-22 | 2019-10-22 | Blast furnace tuyere small sleeve plugging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921777172.4U CN211471470U (en) | 2019-10-22 | 2019-10-22 | Blast furnace tuyere small sleeve plugging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211471470U true CN211471470U (en) | 2020-09-11 |
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ID=72360863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921777172.4U Active CN211471470U (en) | 2019-10-22 | 2019-10-22 | Blast furnace tuyere small sleeve plugging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211471470U (en) |
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2019
- 2019-10-22 CN CN201921777172.4U patent/CN211471470U/en active Active
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