CN213803859U - Blast furnace tuyere small sleeve with double-helix water channel - Google Patents
Blast furnace tuyere small sleeve with double-helix water channel Download PDFInfo
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- CN213803859U CN213803859U CN202022994827.2U CN202022994827U CN213803859U CN 213803859 U CN213803859 U CN 213803859U CN 202022994827 U CN202022994827 U CN 202022994827U CN 213803859 U CN213803859 U CN 213803859U
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Abstract
The utility model discloses a blast furnace tuyere small sleeve with double spiral water channels, which comprises a flange, an inner sleeve, an outer sleeve and a fluid director, wherein the outer sleeve is arranged outside the inner sleeve, the rear end of the outer sleeve and the rear end of the inner sleeve are fixedly connected with the flange, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, the fluid director is arranged in the inner cavity, the flange is provided with a water inlet and a water outlet, the fluid director and the inner wall of the inner cavity jointly enclose a rear water channel, a front water channel, a spiral water inlet channel and a spiral water outlet channel, and the spiral water inlet channel and the spiral water outlet channel are parallel to each other; the front end water channel is a C-shaped flow channel; the water inlet is communicated with the rear end of the spiral water inlet channel through a water inlet pipe, the front end of the spiral water inlet channel is communicated with the water inlet end of the front end water channel, the water outlet end of the front end water channel is communicated with the front end of the spiral water outlet channel, the rear end of the spiral water outlet channel is communicated with the rear end water channel, and the rear end water channel is communicated with the water outlet. The tuyere small sleeve of the double-helix water channel blast furnace has good cooling effect and longer service life.
Description
Technical Field
The utility model relates to a cooling device of an air supply system of an iron-making blast furnace, in particular to a tuyere small sleeve of a blast furnace with a double-helix water channel.
Background
The tuyere small sleeve is an important part in the air inlet system of the iron-making blast furnace and is responsible for feeding hot air into the blast furnace. The service life of the tuyere small sleeve directly influences the whole stable and smooth operation of the blast furnace. With the continuous improvement of the smelting intensity of the blast furnace, particularly the common application of the coal injection technology of the blast furnace, the inner sleeve of the tuyere small sleeve is extremely easy to be eroded by the scouring of the coal powder when the tuyere small sleeve is used for blowing air, so that the working environment of the whole component is worse. If the cooling medium in the tuyere small sleeve can not conduct and dissipate heat in time, the abrasion and melting loss degree of each part of the tuyere small sleeve can be increased rapidly, and finally the whole tuyere small sleeve can be caused to leak water and lose efficacy.
The blast furnace tuyere small sleeve in the prior art comprises a flange, an inner sleeve, an outer sleeve and a fluid director, wherein the outer sleeve is sleeved outside the inner sleeve, the rear end of the outer sleeve and the rear end of the inner sleeve are fixedly connected with the flange, the outer sleeve, the inner sleeve and the flange enclose an inner cavity, and the fluid director is arranged in the inner cavity. The flow guider is mostly formed by welding an iron sleeve and a flow guide ring, a cavity structure is formed between the iron sleeve and the inner sleeve, and the flow guide ring divides the inner side of the outer sleeve into a plurality of water chambers and forms a circulating cooling water channel. When the cooling device works, water flows into the water channel at the front end of the air port along the cavity on the outer wall of the inner sleeve, then enters the water chamber on the inner side of the outer sleeve, and finally flows out through the water outlet channel to cool the parts of the small air port sleeve. Although the cooling effect of the air deflector structure welded by the iron sleeve on the tuyere outer sleeve is improved compared with the traditional integral cavity structure, a dead water area is easily formed by cooling water along the outer wall part of the inner sleeve because the inner sleeve outer wall and the iron sleeve are still in a local cavity structure, the cooling water cannot fully take away heat, and the cooling effect on the inner sleeve of the tuyere small sleeve is poor.
Disclosure of Invention
The utility model aims to solve the problem of providing a blast furnace tuyere small sleeve with a double-spiral water channel, which has good cooling effect and longer service life.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a double helix water course blast furnace tuyere small envelope, includes flange, endotheca, overcoat and divertor, and the overcoat cover is established in the endotheca outside, and overcoat rear end and endotheca rear end all with flange fixed connection, overcoat, endotheca and flange enclose into an inside cavity, and the divertor sets up in inside cavity, is equipped with water inlet and delivery port on the flange, its characterized in that: the fluid director and the inner wall of the inner cavity enclose a rear end water channel, a front end water channel, a spiral water inlet channel and a spiral water outlet channel, and the spiral water inlet channel and the spiral water outlet channel are parallel to each other; the front end water channel is a C-shaped flow channel; the water inlet is communicated with the rear end of the spiral water inlet channel through a water inlet pipe, the front end of the spiral water inlet channel is communicated with the water inlet end of the front end water channel, the water outlet end of the front end water channel is communicated with the front end of the spiral water outlet channel, the rear end of the spiral water outlet channel is communicated with the rear end water channel, and the rear end water channel is communicated with the water outlet.
When the cooling water circulation device is used, cooling water enters the spiral water inlet channel from the water inlet on the flange through the water inlet pipe, flows spirally in the spiral water inlet channel, flows into the front-end water channel from back to front, flows into the spiral water outlet channel after circulating for a circle in the front-end water channel, flows spirally in the spiral water outlet channel, flows into the rear-end water channel from front to back, and flows out from the water outlet on the flange, so that cooling water circulation with water inlet and water outlet alternately distributed is formed.
Generally, the front end of the outer sleeve is connected with the front end of the inner sleeve through a first annular welding seam, the rear end of the outer sleeve is connected with the flange through a second annular welding seam, and the rear end of the inner sleeve is connected with the flange through a third annular welding seam.
As a preferred scheme of the utility model, the fluid director comprises a rear end diversion ring, a front end diversion ring, a water stop plate and two spiral diversion plates, and the two spiral diversion plates are parallel to each other; the rear end guide ring is arranged at the rear end of the spiral guide plate, the front end guide ring is arranged at the front end of the spiral guide plate, and the water-stop sheet is arranged between the front end surface of the front end guide ring and the rear side surface of the front end of the outer sleeve; the two spiral guide plates divide a cavity between the rear end guide ring and the front end guide ring into a spiral water inlet channel and a spiral water outlet channel; the rear end guide ring separates the rear end water channel from the spiral water inlet channel, and a rear water passing notch which communicates the rear end of the spiral water outlet channel with the rear end water channel is formed in the rear end guide ring; the front end guide ring separates the spiral water outlet channel from the front end water channel, and a front water passing notch for communicating the front end of the spiral water inlet channel with the water inlet end of the front end water channel is arranged on the front end guide ring; the water-stop sheet separates the water inlet end of the front end water channel from the water outlet end of the front end water channel; the front end diversion ring is provided with a water through hole which communicates the water outlet end of the front end water channel with the front end of the spiral water outlet channel. The rear end guide ring, the spiral guide plate, the front end guide ring and the water-stop sheet jointly divide the inner cavity of the tuyere small sleeve into a rear end water channel, a spiral water inlet channel, a front end water channel and a spiral water outlet channel, so that the water inlet channel and the water outlet channel of the whole tuyere small sleeve are alternately distributed and arranged.
As a further preferred aspect of the present invention, the inner side edge of the rear end deflector ring, the inner side edge of the spiral deflector, and the inner side edge of the front end deflector ring are all fixed to the outer sidewall of the inner sleeve by welding, and the water-stop plate is fixed to the outer sidewall of the inner sleeve or the front side surface of the front end deflector ring by welding; the outside border of rear end water conservancy diversion ring, the outside border of spiral guide plate, the outside border of front end water conservancy diversion ring and the outside border of water-stop sheet all with the overcoat inside wall closely cooperates, the front end of water-stop sheet with the trailing flank of overcoat front end closely cooperates. The rear end guide ring, the spiral guide plate, the front end guide ring and the water stop plate are directly or indirectly fixed on the outer side wall of the inner sleeve in a welding mode and then are tightly matched with the inner side wall of the outer sleeve, so that the tuyere small sleeve is simple in internal structure and easy to machine, the material and machining and manufacturing cost of an iron sleeve of a traditional flow guider are saved, and the overall strength of an inner sleeve part is improved.
As the utility model discloses an optimal scheme, the inlet tube is big-end-up's water pipe in the front, and the cross sectional shape of the front end of inlet tube is oval, the front end of inlet tube with spiral inlet channel rear end intercommunication, the cross sectional shape of the rear end of inlet tube are circular, the rear end of inlet tube with the water inlet intercommunication. The water inlet pipe adopts a gradual-change type cross-section structure, the circular rear end is connected with the water inlet on the flange, and the oval front end is connected with the rear end of the spiral water inlet channel.
Generally, the flange, the inner sleeve and the outer sleeve are made of pure copper or copper alloy and are forged or extruded, so that the blast furnace tuyere small sleeve has more excellent performance, is compact in material, smaller in crystal grain and higher in heat conductivity, and avoids casting defects such as shrinkage cavities, slag inclusions, air holes or cracks.
The flange and the inner sleeve can also be made of steel, and the outer sleeve is made of pure copper or copper alloy.
The water inlet pipe is made of carbon steel.
Compared with the prior art, the utility model, have following advantage:
this kind of double helix water channel blast furnace tuyere small sleeve adopts double helix water channel structure, overcome the defect of the inside cavity formula structure and the perfusion formula structure of traditional tuyere small sleeve, make the cooling water flow the inner wall (enclosed by endotheca lateral wall and overcoat inside wall) of inside cavity in turn and the even flow through in-process at the inside cavity of tuyere small sleeve and cool off, avoid endotheca lateral wall part to form the stagnant water district, make cooling water can more smoothly flow rationally in inside cavity, more abundant take away the endotheca, the overcoat, the heat of each parts such as flange, better cooling effect has, thereby effectively improve the whole life of tuyere small sleeve.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a perspective view of the flange, inner sleeve and fluid director in an embodiment of the present invention;
fig. 3 is a schematic view illustrating the flow direction of the water path of the inner cavity according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, the double-spiral water channel blast furnace tuyere small sleeve in the embodiment comprises a flange 1, an inner sleeve 2, an outer sleeve 3 and a fluid director 4, wherein the outer sleeve 3 is sleeved outside the inner sleeve 2, the rear end of the outer sleeve 3 and the rear end of the inner sleeve 2 are fixedly connected with the flange 1, the outer sleeve 3, the inner sleeve 2 and the flange 1 define an internal cavity 5, the fluid director 4 is arranged in the internal cavity 5, and the flange 1 is provided with a water inlet 11 and a water outlet 12; the fluid director 4 and the inner wall of the inner cavity 5 jointly enclose a rear water channel 6, a front water channel 7, a spiral water inlet channel 8 and a spiral water outlet channel 9, and the spiral water inlet channel 8 and the spiral water outlet channel 9 are parallel to each other; the front end water channel 7 is a C-shaped flow channel; the water inlet 11 is communicated with the rear end of the spiral water inlet channel 8 through the water inlet pipe 10, the front end of the spiral water inlet channel 8 is communicated with the water inlet end of the front water channel 7, the water outlet end of the front water channel 7 is communicated with the front end of the spiral water outlet channel 9, the rear end of the spiral water outlet channel 9 is communicated with the rear water channel 6, and the rear water channel 6 is communicated with the water outlet 12.
Generally, the front end of the outer sleeve 3 is connected with the front end of the inner sleeve 2 through a first annular welding seam 13, the rear end of the outer sleeve 3 is connected with the flange 1 through a second annular welding seam 14, and the rear end of the inner sleeve 2 is connected with the flange 1 through a third annular welding seam 15.
The fluid director 4 comprises a rear end guide ring 41, a front end guide ring 42, a water stop sheet 43 and two spiral flow deflectors 44, wherein the two spiral flow deflectors 44 are parallel to each other; the rear guide ring 41 is arranged at the rear end of the spiral guide plate 44, the front guide ring 42 is arranged at the front end of the spiral guide plate 44, and the water stop plate 43 is arranged between the front end surface of the front guide ring 42 and the rear side surface of the front end of the outer sleeve 3; the two spiral guide plates 44 divide the cavity between the rear guide ring 41 and the front guide ring 42 into a spiral water inlet channel 8 and a spiral water outlet channel 9; the rear end guide ring 41 separates the rear end water channel 6 from the spiral water inlet channel 8, and a rear water passing notch 411 which communicates the rear end of the spiral water outlet channel 9 with the rear end water channel 6 is arranged on the rear end guide ring 41; the spiral water outlet channel 9 is separated from the front end water channel 7 by the front end guide ring 42, and a front water passing notch 421 for communicating the front end of the spiral water inlet channel 8 with the water inlet end of the front end water channel 7 is arranged on the front end guide ring 42; the water-stop sheet 43 separates the water inlet end of the front end water channel 7 from the water outlet end of the front end water channel 7; the front end guide ring 42 is provided with a water through hole 422 for communicating the water outlet end of the front end water channel 7 with the front end of the spiral water outlet channel 9. The rear end guide ring 41, the spiral guide plate 44, the front end guide ring 42 and the water stop plate 43 jointly divide the inner cavity 5 of the tuyere small sleeve into a rear end water channel 6, a spiral water inlet channel 8, a front end water channel 7 and a spiral water outlet channel 9, so that the water inlet channel and the water outlet channel of the whole tuyere small sleeve are alternately distributed and arranged.
The inner side edge of the rear guide ring 41, the inner side edge of the spiral guide plate 44 and the inner side edge of the front guide ring 42 are fixed on the outer side wall of the inner sleeve 2 by welding, and the water stop plate 43 is fixed on the front side surface of the front guide ring 42 by welding; the outer side edge of the rear end guide ring 41, the outer side edge of the spiral guide plate 44, the outer side edge of the front end guide ring 42 and the outer side edge of the water stop sheet 43 are all tightly matched with the inner side wall of the jacket 3, and the front end of the water stop sheet 43 is tightly matched with the rear side face of the front end of the jacket 3. The rear end guide ring 41, the spiral guide plate 44, the front end guide ring 42 and the water stop plate 43 are directly or indirectly fixed on the outer side wall of the inner sleeve 2 in a welding mode and are tightly matched with the inner side wall of the outer sleeve 3, so that the tuyere small sleeve is simple in internal structure and easy to machine, the material and machining and manufacturing cost of an iron sleeve of a traditional fluid director are saved, and the overall strength of the inner sleeve 2 is improved.
The inlet tube 10 is the big-end-back water pipe, and the cross sectional shape of the front end of inlet tube 10 is oval, and the front end of inlet tube 10 and 8 rear ends of spiral inlet channels communicate, and the cross sectional shape of the rear end of inlet tube 10 is circular, and the rear end of inlet tube 10 and water inlet 11 communicate. The water inlet pipe 10 is of a gradually-changing cross-sectional structure, the circular rear end of the water inlet pipe is connected with the water inlet 11 on the flange 1, and the oval front end of the water inlet pipe is connected with the rear end of the spiral water inlet channel 8. The water inlet pipe 10 is made of carbon steel.
Generally, the flange 1, the inner sleeve 2 and the outer sleeve 3 are made of pure copper or copper alloy and are formed by forging or extrusion processing, so that the blast furnace tuyere small sleeve has more excellent performance, is compact in material, smaller in crystal grain and higher in heat conductivity, and avoids casting defects such as shrinkage cavities, slag inclusions, air holes or cracks.
When the cooling water circulation cooling device is used, cooling water enters the spiral water inlet channel 8 from the water inlet 11 on the flange 1 through the water inlet pipe 10, flows spirally in the spiral water inlet channel 8, then flows into the front end water channel 7 from back to front, flows for a circle in the front end water channel 7, enters the spiral water outlet channel 9, flows spirally in the spiral water outlet channel 9, finally flows into the rear end water channel 6 from front to back, and flows out from the water outlet 12 on the flange 1, so that cooling water circulation with water inlet and water outlet alternately distributed and arranged is formed.
In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (4)
1. The utility model provides a double helix water course blast furnace tuyere small envelope, includes flange, endotheca, overcoat and divertor, and the overcoat cover is established in the endotheca outside, and overcoat rear end and endotheca rear end all with flange fixed connection, overcoat, endotheca and flange enclose into an inside cavity, and the divertor sets up in inside cavity, is equipped with water inlet and delivery port on the flange, its characterized in that: the fluid director and the inner wall of the inner cavity enclose a rear end water channel, a front end water channel, a spiral water inlet channel and a spiral water outlet channel, and the spiral water inlet channel and the spiral water outlet channel are parallel to each other; the front end water channel is a C-shaped flow channel; the water inlet is communicated with the rear end of the spiral water inlet channel through a water inlet pipe, the front end of the spiral water inlet channel is communicated with the water inlet end of the front end water channel, the water outlet end of the front end water channel is communicated with the front end of the spiral water outlet channel, the rear end of the spiral water outlet channel is communicated with the rear end water channel, and the rear end water channel is communicated with the water outlet.
2. The double helix channel blast furnace tuyere small sleeve according to claim 1, characterized in that: the flow guider comprises a rear end flow guide ring, a front end flow guide ring, a water stop plate and two spiral flow guide plates, and the two spiral flow guide plates are parallel to each other; the rear end guide ring is arranged at the rear end of the spiral guide plate, the front end guide ring is arranged at the front end of the spiral guide plate, and the water-stop sheet is arranged between the front end surface of the front end guide ring and the rear side surface of the front end of the outer sleeve; the two spiral guide plates divide a cavity between the rear end guide ring and the front end guide ring into a spiral water inlet channel and a spiral water outlet channel; the rear end guide ring separates the rear end water channel from the spiral water inlet channel, and a rear water passing notch which communicates the rear end of the spiral water outlet channel with the rear end water channel is formed in the rear end guide ring; the front end guide ring separates the spiral water outlet channel from the front end water channel, and a front water passing notch for communicating the front end of the spiral water inlet channel with the water inlet end of the front end water channel is arranged on the front end guide ring; the water-stop sheet separates the water inlet end of the front end water channel from the water outlet end of the front end water channel; the front end diversion ring is provided with a water through hole which communicates the water outlet end of the front end water channel with the front end of the spiral water outlet channel.
3. The double helix channel blast furnace tuyere small sleeve according to claim 2, characterized in that: the inner side edge of the rear end guide ring, the inner side edge of the spiral guide plate and the inner side edge of the front end guide ring are fixed on the outer side wall of the inner sleeve through welding, and the water stop plate is fixed on the outer side wall of the inner sleeve or the front side surface of the front end guide ring through welding; the outside border of rear end water conservancy diversion ring, the outside border of spiral guide plate, the outside border of front end water conservancy diversion ring and the outside border of water-stop sheet all with the overcoat inside wall closely cooperates, the front end of water-stop sheet with the trailing flank of overcoat front end closely cooperates.
4. The double helix channel blast furnace tuyere small sleeve according to claim 1, characterized in that: the inlet tube is big water pipe in the front and back, and the cross sectional shape of the front end of inlet tube is oval, the front end of inlet tube with spiral inlet channel rear end intercommunication, the cross sectional shape of the rear end of inlet tube are circular, the rear end of inlet tube with the water inlet intercommunication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022994827.2U CN213803859U (en) | 2020-12-14 | 2020-12-14 | Blast furnace tuyere small sleeve with double-helix water channel |
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| CN202022994827.2U CN213803859U (en) | 2020-12-14 | 2020-12-14 | Blast furnace tuyere small sleeve with double-helix water channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125343A (en) * | 2022-07-29 | 2022-09-30 | 内蒙古工业大学 | Wear-resistant high-temperature-resistant blast furnace tuyere |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125343A (en) * | 2022-07-29 | 2022-09-30 | 内蒙古工业大学 | Wear-resistant high-temperature-resistant blast furnace tuyere |
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