CN208545451U - A kind of blast furnace tuyere small sleeve - Google Patents
A kind of blast furnace tuyere small sleeve Download PDFInfo
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- CN208545451U CN208545451U CN201820979160.9U CN201820979160U CN208545451U CN 208545451 U CN208545451 U CN 208545451U CN 201820979160 U CN201820979160 U CN 201820979160U CN 208545451 U CN208545451 U CN 208545451U
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- inner sleeve
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- tuyere small
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Abstract
The utility model relates to a kind of blast furnace tuyere small sleeves, including flange, inner sleeve, housing and air deflector, housing is set in outside of inner cover, housing rear end and inner sleeve rear end are fixedly connected with flange, housing, inner sleeve and flange surround an internal cavities, air deflector is set in internal cavities, the medial surface of housing front end and the lateral surface of the inner sleeve front end are in close contact, inner sleeve front end face is in the rear side of housing front end face, inner sleeve front end face and the medial surface of housing front end surround an annular groove, pass through first annular solder design between inner sleeve front end face and the medial surface of housing front end, first annular weld seam is in annular groove.First annular weld seam is hidden in the annular groove of inner sleeve front end by this blast furnace with tuyere small sleeve, it can be avoided coal dust and wash away first annular weld seam, it effectively avoids wearing and causing weld cracking leak, improve the service life of tuyere small sleeve, and facilitate welding, good operability, manufacturing process is simple, guarantees welding quality.
Description
Technical field
The utility model relates to a kind of cooling equipment for blast furnace, in particular to a kind of blast furnace tuyere small sleeve.
Background technique
Modern blast furnace is all smelted using coal powder injection mostly in order to improve rate of driving, save coke usage amount.As shown in Fig. 2,
Existing blast furnace generally includes flange 01, inner sleeve 02, housing 03 and air deflector 04 with welded type tuyere small sleeve, and housing 03 is set in
Outside inner sleeve 02,03 rear end of housing and 02 rear end of inner sleeve are fixedly connected (as welded) with flange 01, housing 03, inner sleeve 02 and method
Orchid 01 surrounds an internal cavities 05, and air deflector 04 is set in internal cavities 05, and 02 front end of inner sleeve and 03 front end of housing pass through the
The connection of one circular weld 06,03 rear end of housing are connect with flange 01 by the second circular weld 07,02 rear end of inner sleeve and flange 01
It is connected by third circular weld 08.
The main heat-conducting piece of above-mentioned welded type tuyere small sleeve, material are generally fine copper or copper alloy, either casting,
Forging (including rolled parts) or casting forging engaging member connect inner sleeve 02 at present, the first annular weld seam 06 of housing 03 is all that setting exists
Dock circular weld on tuyere small sleeve medial surface, the first annular weld seam 06 most nearby arrive the axial direction of tuyere small sleeve front end face
Distance generally 30~70mm.If coal powder injection tube hub line is relative to the angle or coal powder injection tube end of inner sleeve center line and air port
The distance adjustment of small set front end face is improper, all easily causes blow, i.e., swiftly flowing coal dust and tuyere small sleeve include the first ring
Partial inner side face including shape weld seam 06 directly contacts, and accelerates the abrasion of first annular weld seam 06 and base material in contact zone, in wind
When service life has not been reached yet in the small set of mouth, it is that main cause causes weld cracking leak with abrasion, tuyere small sleeve is caused to be scrapped.
Summary of the invention
The problem to be solved by the utility model is to provide a kind of blast furnace tuyere small sleeve, this blast furnace tuyere small sleeve energy
It enough avoids coal dust from washing away circular weld, effectively avoids wearing and causing weld cracking leak, improve the service life of tuyere small sleeve,
And facilitating welding, good operability, manufacturing process is simple, guarantees welding quality.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is as follows:
A kind of blast furnace tuyere small sleeve, including flange, inner sleeve, housing and air deflector, housing are set in outside of inner cover, housing
Rear end and inner sleeve rear end are fixedly connected with flange, and housing, inner sleeve and flange surround an internal cavities, and air deflector is set to inside
In cavity, it is characterized in that: the medial surface of the housing front end and the lateral surface of the inner sleeve front end are in close contact, inner sleeve front end face
Rear side in housing front end face, the medial surface of inner sleeve front end face and housing front end surround an annular groove, inner sleeve front end face with
By first annular solder design between the medial surface of housing front end, first annular weld seam is in annular groove.
In above structure, inner sleeve front end face is in the rear side of housing front end face, so that inner sleeve front end is relative to housing front end
Retraction, and by being welded and fixed between inner sleeve front end face and the medial surface of housing front end, the first annular weldering formed after welding
Seam is hidden in the annular groove of inner sleeve front end, even if blow occurs for coal injection pipe, swiftly flowing coal dust is only and in inner sleeve
Side wall directly contacts, and due to rear to before gradually becoming smaller without leave in the inlet and outlet of inner sleeve, inner sleeve has certain thickness, the first ring
Shape weld seam is sheltered from certain thickness inner sleeve, and swiftly flowing coal dust can not directly be contacted with first annular weld seam, no
The region of first annular weld seam can be made to wear, coal dust is can be avoided and wash away first annular weld seam, effectively avoid wearing
And weld cracking leak is caused, the service life of tuyere small sleeve is improved, and facilitate welding, good operability, manufacturing process is simple, protects
Demonstrate,prove welding quality.
In general, above-mentioned housing rear end, by the second circular weld and flanged joint, inner sleeve rear end passes through third circular weld
With flanged joint.
In general, generally offering inlet and outlet on flange, in air deflector will be surrounded by housing, inner sleeve and flange
Portion's cavity separates, and forms water cooling passageway.
As a preferred embodiment of the present invention, the inner sleeve front end face gradually slopes inwardly front to back certainly.
The utility model compared with prior art, has the advantages that
This blast furnace is retracted using inner sleeve front end relative to housing front end with tuyere small sleeve, so that inner sleeve front end face and housing
The medial surface of front end surrounds an annular groove, first annular weld seam is hidden in the annular groove of inner sleeve front end, even if coal powder injection
Pipe occur blow, swiftly flowing coal dust only directly contacted with the inner sidewall of inner sleeve, due in the inlet and outlet of inner sleeve without leave
Afterwards to before gradually becoming smaller, inner sleeve has certain thickness, and first annular weld seam is sheltered from certain thickness inner sleeve, high speed
The coal dust of flowing can not directly be contacted with first annular weld seam, the region of first annular weld seam will not be made to wear, energy
It enough avoids coal dust from washing away first annular weld seam, effectively avoids wearing and causing weld cracking leak, improve the use of tuyere small sleeve
Service life, and facilitate welding, good operability, manufacturing process is simple, guarantees welding quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model specific embodiment；
Fig. 2 is the structural schematic diagram of blast furnace welded type tuyere small sleeve in the utility model background technique.
Specific embodiment
The utility model is specifically described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the blast furnace tuyere small sleeve in the present embodiment, including flange 1, inner sleeve 2, housing 3 and air deflector 4,
Housing 3 is set in outside inner sleeve 2, and 3 rear end of housing and 2 rear end of inner sleeve are fixedly connected with flange 1, housing 3, inner sleeve 2 and flange 1
An internal cavities 5 are surrounded, air deflector 4 is set in internal cavities 5, the medial surface of 3 front end of housing and the lateral surface of 2 front end of inner sleeve
It is in close contact, 2 front end face of inner sleeve is in the rear side of 3 front end face of housing, and 2 front end face of inner sleeve and the medial surface of 3 front end of housing surround
One annular groove 9 is connected by first annular weld seam 6 between the medial surface of 3 front end of 2 front end face of inner sleeve and housing, first annular
Weld seam 6 is in annular groove 9.
3 rear end of housing is connect by the second circular weld 7 with flange 1, and 2 rear end of inner sleeve passes through third circular weld 8 and method
Orchid 1 connects.
In general, generally offering inlet and outlet on flange 1, air deflector 4 will be enclosed by housing 3, inner sleeve 2 and flange 1
At internal cavities 5 separate, formed cooling-water duct.
2 front end face of inner sleeve is in the rear side of 3 front end face of housing, so that 2 front end of inner sleeve is retracted relative to 3 front end of housing, and
By being welded and fixed between the medial surface of 3 front end of 2 front end face of inner sleeve and housing, the first annular weld seam 6 formed after welding is hidden
It ensconces in the annular groove 9 of 2 front end of inner sleeve, even if blow occurs for coal injection pipe, swiftly flowing coal dust is the inside with inner sleeve 2
Wall directly contacts, and due to rear to before gradually becoming smaller without leave in the inlet and outlet of inner sleeve 2, inner sleeve has certain thickness, the first ring
Shape weld seam 6 is sheltered from certain thickness inner sleeve 2, and swiftly flowing coal dust can not directly be contacted with first annular weld seam 6,
The region of first annular weld seam 6 will not be made to wear, coal dust is can be avoided and wash away first annular weld seam 6, effectively avoid
It wears and causes weld cracking leak, improve the service life of tuyere small sleeve, and facilitate welding, good operability, manufacturing process letter
It is single, guarantee welding quality.
In addition, it should be noted that, the specific embodiments described in this specification, each section title etc. can not
Together, all equivalent or simple changes done according to structure, feature and principle described in the concept of the patent of the utility model are included in this
In the protection scope of utility model patent.Those skilled in the art of the present invention can be to described specific reality
Example is applied to do various modifications or additions or be substituted in a similar manner, structure without departing from the utility model or
Beyond the scope defined by this claim, it all should belong to the protection range of the utility model.
Claims (2)
1. a kind of blast furnace tuyere small sleeve, including flange, inner sleeve, housing and air deflector, housing is set in outside of inner cover, after housing
End and inner sleeve rear end are fixedly connected with flange, and housing, inner sleeve and flange surround an internal cavities, and air deflector is set to internal sky
It is intracavitary, it is characterized in that: the medial surface of the housing front end and the lateral surface of the inner sleeve front end are in close contact, at inner sleeve front end face
In the rear side of housing front end face, the medial surface of inner sleeve front end face and housing front end surrounds an annular groove, inner sleeve front end face and outer
It covers by first annular solder design between the medial surface of front end, first annular weld seam is in annular groove.
2. blast furnace tuyere small sleeve as described in claim 1, it is characterized in that: the inner sleeve front end face is certainly gradually inside front to back
Inclination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820979160.9U CN208545451U (en) | 2018-06-25 | 2018-06-25 | A kind of blast furnace tuyere small sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820979160.9U CN208545451U (en) | 2018-06-25 | 2018-06-25 | A kind of blast furnace tuyere small sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208545451U true CN208545451U (en) | 2019-02-26 |
Family
ID=65423368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820979160.9U Active CN208545451U (en) | 2018-06-25 | 2018-06-25 | A kind of blast furnace tuyere small sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208545451U (en) |
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2018
- 2018-06-25 CN CN201820979160.9U patent/CN208545451U/en active Active
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