CN202099304U - Blast furnace tuyere sleeve - Google Patents
Blast furnace tuyere sleeve Download PDFInfo
- Publication number
- CN202099304U CN202099304U CN2011201381426U CN201120138142U CN202099304U CN 202099304 U CN202099304 U CN 202099304U CN 2011201381426 U CN2011201381426 U CN 2011201381426U CN 201120138142 U CN201120138142 U CN 201120138142U CN 202099304 U CN202099304 U CN 202099304U
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- CN
- China
- Prior art keywords
- tuyere
- sleeve
- blast furnace
- air port
- connecting plate
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- 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 relates to a tuyere sleeve sealing structure of a blast furnace for ironmaking, which aims at providing a blast furnace tuyere sleeve which is simple in structure and convenient to operate. The blast furnace tuyere sleeve comprises a tuyere large sleeve and a tuyere middle sleeve. The tuyere large sleeve and the tuyere middle sleeve are in seal connection through an annular connecting plate. The outer end of the annular connecting plate is fixedly connected with the inner wall of the tuyere large sleeve, and the inner end of the annular connecting plate is fixedly connected with the rear end face of the tuyere middle sleeve. A grouting hole is arranged on the wall of the tuyere middle sleeve, a round tube is arranged in the grouting hole, and the outer wall of the round tube is fixedly connected with the tuyere middle sleeve. The shape of the section of the annular connecting plate is formed along the axial direction of the tuyere middle sleeve and provided with extensible and compensated performance. By means of the structure, even though the tuyere middle sleeve flees from front to back due to the temperature changes in the blast furnace, the deformation of the annular connecting plate can compensate and neutralize the movement of the tuyere middle sleeve. Therefore, the blast furnace tuyere sleeve achieves good sealing effect, prevents the welding joint between the tuyere large sleeve and the tuyere middle sleeve from cracking, and avoiding gas leakage of the blast furnace from the welding joint.
Description
Technical field
The utility model relates to a kind of tuyere cover of blast furnace, particularly relates to the sealed structure between cover and tuyere big sleeve in a kind of blast-furnace tuyere, the furnace shell.
Background technology
Blast furnace is an airtight HTHP smelting vessel, and air-supply arrangement blasts hot blast through the air port equipment that is installed on the furnace shell in stove.One comprises big cover, middle cover and little cover air port equipment, is the necessary equipment of blast-furnace smelting, between the cover of each air port and and furnace shell between all to realize good sealing effectiveness; But in the existing blast furnace, as easy as rolling off a log generation gas leakage between the cover in tuyere big sleeve and the air port, the formation reason is: in the existing tuyere cover of blast furnace sealed structure; Realize sealing through being welded to connect plate between cover and the tuyere big sleeve in the air port, but its web plate one be dull and stereotyped connection, do not have compensation ability; Cover is supported among the refractory materials at furnace shell inwall place in the air port, and refractory materials can produce huge expansion and shrink repeated stress because of the continuous variation (damping down, multiple wind) of blast furnace operating temperature; Cover produces and in stove, scurries into or backward movement in feasible the sealing, the multiple character and conduct work of each damping down when large blast furnace is serious, and the cover advance and retreat can be up to 10mm in sealing; So just destroyed the sealing of sealing between middle cover and the tuyere big sleeve; Weld seam is torn very soon, seal failure, this just make pressure be the blast furnace gas of 0.1-0.35Mpa from the air port, overlap and big cover between ejection; Cause the serious potential safety hazard of tuyere platform, also limited the high top pressure operation of blast furnace simultaneously.
The utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of tuyere cover of blast furnace simple in structure, easy and simple to handle.
A kind of tuyere cover of blast furnace of the utility model; Comprise in tuyere big sleeve, the air port and overlapping; Be tightly connected through annular connecting plate between the cover in tuyere big sleeve and the air port, the outer end of said annular connecting plate is fixedly connected with the tuyere big sleeve inwall, and the aft end face that overlaps is fixedly connected in the inner and the air port; Have grout hole in the air port on the jacket wall; Pipe is installed in the grout hole, overlaps in the outer wall of said pipe and the air port and be fixedly connected, the cross-sectional shape of said annular connecting plate is for having the shape of flexible compensation ability along cover axis direction in the air port.
A kind of tuyere cover of blast furnace of the utility model, wherein said annular connecting plate be shaped as arc, S shape, multi sphere shape or L shaped.
A kind of tuyere cover of blast furnace of the utility model has ring groove on the cover outer wall in the wherein said air port, and said ring groove is through upper shed place of grout hole.Adopt after this structure; Make that the refractory mortar that pours into from grout hole can be diversion trench with the ring groove; Along circumferential flow of cover outer wall in the air port, the refractory mortar that pours into is more evenly distributed around in the air port, overlap, and makes that cover fuses with its outer wall refractory materials on every side in the air port as far as possible; Improved the inboard sealing effectiveness of blast furnace, further reduced blast furnace gas and penetrated the possibility that refractory materials is outwards revealed.
A kind of tuyere cover of blast furnace of the utility model, wherein said grout hole has two at least, and diameter is identical, on the same cross section that the axis of above-mentioned grout hole overlaps in the air port.
The utility model difference from prior art is; A kind of blast-furnace tuyere covering device of the utility model; The cross-sectional shape of annular connecting plate wherein is arranged to have the shape of flexible compensation ability, thus in the air port cover when scurrying into or retreating in damping down, the multiple wind direction stove, annular connecting plate generation deformation; Compensated the displacement of overlapping in the air port; Therefore alleviated the original stress that should bear of web plate weld seam, thereby made weld seam not ftracture easily, good sealing property between having guaranteed to overlap in tuyere big sleeve and the air port.
Below in conjunction with accompanying drawing the utility model is described further.
Description of drawings
Fig. 1 is the installation site synoptic diagram of web plate in the utility model tuyere cover of blast furnace;
Fig. 2 is three kinds of cross-sectional shape synoptic diagram of web plate in the utility model tuyere cover of blast furnace;
The front view of Fig. 3 for overlapping in the air port in the utility model tuyere cover of blast furnace;
Fig. 4 is along the sectional view of A-A line among Fig. 3.
Embodiment
Like Fig. 1, Fig. 3, shown in Figure 4, a kind of tuyere cover of blast furnace of the utility model comprises in tuyere big sleeve 1, the air port and overlaps 2; Be tightly connected through annular connecting plate 3 between the cover 2 in tuyere big sleeve 1 and the air port, the cross-sectional shape of annular connecting plate 3 is an arc, and the outer end of annular connecting plate 3 is welded on the inwall of tuyere big sleeve 1; The inner of annular connecting plate 3 is welded on the aft end face of cover 2 in the air port; Have two grout holes 4,5 that diameter is identical on cover 2 walls in the air port, on the same cross section that the axis of grout hole 4,5 overlaps, pipe 6 is installed in the grout hole 4 in the air port; The outer wall of pipe 6 is welded on and overlaps on 2 in the air port; It is identical that pipe setting in the grout hole 5 and pipes in the grout hole 4 are provided with, and has ring groove 7 on cover 2 outer walls in the air port, and ring groove 7 passes through upper shed place of grout holes 4,5.
The shape of the annular connecting plate 3 in the utility model can also be the shape shown in (b) among Fig. 2, (c).
Above-described embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that those of ordinary skills make the technical scheme of the utility model all should fall in the definite protection domain of the utility model claims.
Claims (4)
1. tuyere cover of blast furnace; Comprise in tuyere big sleeve, the air port and overlapping; Be tightly connected through annular connecting plate between the cover in tuyere big sleeve and the air port, the outer end of said annular connecting plate is fixedly connected with the tuyere big sleeve inwall, and the aft end face that overlaps is fixedly connected in the inner and the air port; Have grout hole in the air port on the jacket wall; Pipe is installed in the grout hole, overlaps in the outer wall of said pipe and the air port and be fixedly connected, it is characterized in that: the cross-sectional shape of said annular connecting plate is for having the shape of flexible compensation ability along cover axis direction in the air port.
2. tuyere cover of blast furnace according to claim 1 is characterized in that: said annular connecting plate be shaped as arc, S shape, multi sphere shape or L shaped.
3. tuyere cover of blast furnace according to claim 1 is characterized in that: have ring groove on the cover outer wall in the said air port, said ring groove is through upper shed place of grout hole.
4. tuyere cover of blast furnace according to claim 1 is characterized in that: said grout hole has two at least, and diameter is identical, on the same cross section that the axis of above-mentioned grout hole overlaps in the air port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201381426U CN202099304U (en) | 2011-05-04 | 2011-05-04 | Blast furnace tuyere sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201381426U CN202099304U (en) | 2011-05-04 | 2011-05-04 | Blast furnace tuyere sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202099304U true CN202099304U (en) | 2012-01-04 |
Family
ID=45385328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201381426U Expired - Lifetime CN202099304U (en) | 2011-05-04 | 2011-05-04 | Blast furnace tuyere sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202099304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182632A (en) * | 2018-11-14 | 2019-01-11 | 马鞍山钢铁股份有限公司 | It is a kind of to can inhibit the blast-furnace tuyere and its tools and production method that middle set upwarps |
| CN114369694A (en) * | 2022-01-10 | 2022-04-19 | 广东韶钢松山股份有限公司 | Blast furnace tuyere and method for preventing tuyere from upwarping |
-
2011
- 2011-05-04 CN CN2011201381426U patent/CN202099304U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182632A (en) * | 2018-11-14 | 2019-01-11 | 马鞍山钢铁股份有限公司 | It is a kind of to can inhibit the blast-furnace tuyere and its tools and production method that middle set upwarps |
| CN114369694A (en) * | 2022-01-10 | 2022-04-19 | 广东韶钢松山股份有限公司 | Blast furnace tuyere and method for preventing tuyere from upwarping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YANTAI WANLONG VACUUM METALLURGY CO., LTD. Free format text: FORMER NAME: WANLONG VACUUM METALLURGY CO LTD, YANTAI |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 264006 No. 7 Zhongshan street, Guangzhou Road, Yantai Development Zone, Shandong, China Patentee after: YANTAI WANLONG VACUUM METALLURGY CO., LTD. Address before: 264006 No. 7 Zhongshan street, Guangzhou Road, Yantai Development Zone, Shandong, China Patentee before: Yantai Wanlong Vacuum Metallurgy Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120104 |