CN114908205A - Miniature cooler of blast furnace - Google Patents
Miniature cooler of blast furnace Download PDFInfo
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- CN114908205A CN114908205A CN202210428096.6A CN202210428096A CN114908205A CN 114908205 A CN114908205 A CN 114908205A CN 202210428096 A CN202210428096 A CN 202210428096A CN 114908205 A CN114908205 A CN 114908205A
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- cooler
- inner core
- blast furnace
- cooler body
- pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000007789 sealing Methods 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 20
- 229910052802 copper Inorganic materials 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 19
- 239000000498 cooling water Substances 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 32
- 239000010959 steel Substances 0.000 description 32
- 238000001816 cooling Methods 0.000 description 23
- 238000003466 welding Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 239000011440 grout Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a blast furnace micro cooler, which belongs to the technical field of metallurgical equipment, can simultaneously take the functions of heat conductivity and wear resistance of the micro cooler into account, and is beneficial to forming protective slag crust, thereby prolonging the service life of the micro cooler; the cooler comprises a cooler body, a sleeve, an inner core pipe, a water inlet pipe, a water outlet pipe and a plurality of water flow baffles; the cooler body is of a tubular structure with one open end; the inner core pipe is tubular with two open ends; the first end of the sleeve is fixedly connected with the open end of the cooler body in a sealing manner; the inner core pipe is inserted in the sleeve and the cooler body; the second end of the sleeve is hermetically connected with the outer wall of the inner core pipe; water flow channels are arranged between the inner core pipe and the cooler body and between the inner core pipe and the sleeve; a water outlet pipe is arranged on the sleeve; a water inlet pipe is arranged at one end of the inner core pipe, which is far away from the cooler body; the water flow baffle is fixed between the inner core pipe and the cooler body.
Description
Technical Field
The invention relates to the technical field of metallurgical equipment, in particular to a blast furnace micro cooler.
Background
With the development of large-scale and high-efficiency blast furnaces, the long service life of blast furnace bosh, waist and shaft lower coolers is more and more emphasized. The cooling walls at the lower part of the furnace bosh, the furnace waist and the furnace body are in the environment with high heat load and frequent fluctuation of temperature and are often subjected to the scouring and abrasion of high-temperature coal gas flow and furnace burden, so the service life of the cooling walls is greatly reduced. Once the cooling wall has large-area water leakage, the stable and smooth operation of the blast furnace can be seriously influenced, and the blast furnace is in danger of shutdown and intermediate repair under the more serious condition. The miniature cooler is arranged on the water leakage cooling wall, so that the risk caused by the failure of the cooling wall can be effectively relieved, and the service lives of the cooling wall, the furnace bosh, the furnace waist and the lower part of the furnace body are prolonged.
At present, the micro cooler is generally applied to the blast furnace in the later period of the furnace campaign, and the application effect of the micro cooler is confirmed by most blast furnaces. The service life of a common micro cooler can reach more than 1 year, but the micro cooler is damaged too early due to the reasons of high smelting strength, frequent falling of slag crust and the like of a part of blast furnaces, and the service life is less than 6 months. The existing micro cooler is generally made of copper, the interior of the micro cooler is generally double chambers or comprises a water channel baffle, and the flow speed of cooling water in the micro cooler is uneven, so that the heat transfer of the micro cooler is influenced, and the micro cooler is damaged due to overhigh temperature. The micro cooler has two schemes of adding a wear-resistant layer and not adding the wear-resistant layer, and the micro cooler without the wear-resistant layer is prematurely damaged due to poor wear resistance of copper; and the micro cooler added with the wear-resistant layer material has the defects of high surface temperature and difficult slag crust condensation and abrasion damage due to poor heat conducting property of the wear-resistant layer.
Accordingly, there is a need to address the deficiencies of the prior art by developing a blast furnace micro cooler that addresses or mitigates one or more of the problems set forth above.
Disclosure of Invention
In view of this, the present invention provides a micro cooler for a blast furnace, which can simultaneously take account of the functions of heat conductivity and wear resistance of the micro cooler, and is beneficial to forming protective slag crust, thereby prolonging the service life of the micro cooler.
On one hand, the invention provides a blast furnace micro cooler, which comprises a cooler body, a sleeve, an inner core pipe, a water inlet pipe, a water outlet pipe and a plurality of water flow baffles;
the cooler body is of a tubular structure with one open end; the inner core pipe is tubular with two open ends;
the first end of the sleeve is fixedly connected with the open end of the cooler body in a sealing manner; the inner core pipe is inserted in the sleeve and the cooler body; the second end of the sleeve is hermetically connected with the outer wall of the inner core pipe; water flow channels are arranged between the inner core pipe and the cooler body and between the inner core pipe and the sleeve;
a water outlet pipe is arranged on the sleeve; a water inlet pipe is arranged at one end of the inner core pipe, which is far away from the cooler body;
the water flow baffle is fixed between the inner core pipe and the cooler body;
and cooling water enters the inner core pipe from the water inlet pipe, then enters the water flow channel under the action of the water flow baffle, and finally is discharged from the water outlet pipe.
The above aspects and any possible implementation manners further provide an implementation manner, wherein the cooler further comprises a cooler fixing piece, and the cooler fixing piece is sleeved on the periphery of the first end of the sleeve and is used for being fixedly connected with the blast furnace.
The above aspects and any possible implementation manners further provide an implementation manner, wherein the cooler fixing member is provided with a grouting port, and the grouting port penetrates through the front and the back of the cooler fixing member;
the front end of the grouting opening is connected with the grouting pipe, and the end face of the rear end of the grouting opening is tightly attached to the outer wall of the cooler body; the end face is tightly attached, that is, the lowest end of the end face is not higher than the outer wall of the cooler body, so that grouting materials can enter a gap between the cooler body and the furnace wall structure conveniently during grouting.
The above aspect and any possible implementation manner further provide an implementation manner, wherein a plurality of annular wear-resistant layers are arranged on the periphery of the cooler body, and an inner concave wear-resistant layer is arranged on the outer surface of the non-open end of the cooler body.
The above aspect and any one of the possible implementations further provides an implementation in which the inner concave wear-resistant layer includes an annular wear-resistant layer and a disc-shaped wear-resistant layer that are integrally connected, the annular wear-resistant layer is sleeved on the outer periphery of the end portion of the cooler body, and the disc-shaped wear-resistant layer is provided on the end surface of the cooler body.
The above aspect and any possible implementation further provide an implementation in which the cooler body is a copper pipe.
The aspect and any possible implementation manner described above further provide an implementation manner that the end face thickness of the non-opening end of the cooler body is 20-30 mm.
The above aspects and any possible implementations further provide an implementation in which the water flow baffles are helically arranged along the outer wall of the inner core tube.
The above aspect and any possible implementation further provide an implementation in which the number of the water flow baffles is 2 to 4.
The above aspect and any possible implementation manner further provide an implementation manner that the annular wear-resistant layer and/or the concave wear-resistant layer is made of any one of an iron-based alloy, a nickel-based alloy, brass, and a ceramic wear-resistant material.
In another aspect, the present invention provides a blast furnace comprising a blast furnace micro-cooler as defined in any one of the above; the cooler body of the blast furnace micro cooler is inserted in a blast furnace wall structure, and grouting material poured into the gap between the cooler body and the blast furnace wall structure through the grouting pipe and the grouting opening is arranged in the gap between the cooler body and the blast furnace wall structure.
Compared with the prior art, one of the technical schemes has the following advantages or beneficial effects: the novel micro cooler is composed of a copper cooler body, a flange, a sleeve, a grouting pipe, a water inlet pipe, a water outlet pipe, a water flow baffle, an inner core pipe, an annular wear-resistant layer and other parts, and is an independent cooling structure; the existence of the grouting pipe can press grouting material into the furnace to protect the micro cooler and the cooling wall; the existence of the internal water flow baffle is beneficial to the uniform distribution of a cooling water flow field, and the micro cooler is cooled more uniformly; the annular wear-resisting layer is favorable for guaranteeing that the micro cooler has good heat-conducting property and wear-resisting property at the same time, and the service life of the micro cooler can be prolonged.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a cross-sectional view of a novel micro cooler provided in accordance with one embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 according to one embodiment of the present invention;
FIG. 3 is a left side view of the novel micro cooler provided in accordance with one embodiment of the present invention;
fig. 4 is a diagram of a novel micro cooler and a cooling wall according to an embodiment of the present invention.
Wherein, in the figure:
1. a cooler body; 2. a steel casing; 2.1, discharging a water pipe; 2.2, reserving a matching hole; 3. a flange; 3.1, grouting pipes; 3.2, a flange grouting opening; 4. an inner core tube; 4.1, a water inlet pipe; 5.1, a wear-resistant layer first ring; 5.2, a second ring of the wear-resistant layer; 5.3, a third ring of the wear-resistant layer; 5.4, a fourth ring of the wear-resistant layer; 6.1, first intervals of the wear-resistant layer; 6.2, second interval of the wear-resistant layer; 6.3, a third interval of the wear-resistant layer; 7.1, a first water flow baffle; 7.2, a second water flow baffle; 7.3, a third water flow baffle; 8.1, an inner core water channel; 8.2, a baffle gap water channel; 8.3, water channels in the steel sleeve; 8.4, a bottom water channel; 9. a furnace shell; 10. ramming the material; 11. a stave; 12. slag crust; 13. and (5) grouting the slurry.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a miniature cooler, which is shown in figures 1-3 and comprises a cooler body 1, a steel sleeve 2, a flange 3, an inner core pipe 4, a grouting pipe 3.1, a water inlet pipe 4.1, a water outlet pipe 2.1, a plurality of water flow baffles and a plurality of annular wear-resistant layers. The cooler body 1 is tubular with one open end, the inner core tube 4 is tubular with two open ends, and the cooler body 1 is sleeved on the periphery of the inner core tube 4. The steel sleeve 2 is tubular with two open ends, is fixedly connected with the flange 3 and is sleeved on the periphery of the inner core tube 4. The first end of the steel sleeve 2 is connected with the cooler body 1, and the second end is fixedly connected with the outer wall of the inner core pipe in a sealing mode.
The cooler body 1 is connected with a steel sleeve 2 (namely a steel sleeve) in a welding mode. A plurality of water flow channels are arranged between the cooler body 1 and the inner core tube 4, and each water flow channel comprises a baffle gap water channel 8.2 and a bottom end water channel 8.4. A water flow channel is also arranged between the steel sleeve 2 and the inner core pipe 4, namely the steel sleeve inner water channel 8.3. The cooler body passes through the furnace shell 9, the ramming mass 10, the cooling wall 11 and the slag crust 12 in sequence and enters the blast furnace, as shown in fig. 4, a connecting gap exists between the cooler body and the furnace shell 9, the ramming mass 10, the cooling wall 11 and the slag crust 12, grouting material 13 is arranged in the gap, and the grouting material 13 is wrapped at the tail end (i.e. the part penetrating into the blast furnace) of the cooler body. When the cooler body is inserted into the blast furnace, the flange 3 is connected to the outermost wall of the blast furnace.
The flange 3 is sleeved on the periphery of the steel sleeve, and the steel sleeve is fixedly connected with the flange, so that the stability of the structure during working is facilitated.
Further, cooler body one end opening, open end and steel sleeve pipe welded type are connected, and the other end is not the opening, and bottom thickness is 20 ~ 30mm, can be through thickening bottom thickness in order to guarantee into stove end life. The cooler body is of a copper structure.
Further, as shown in fig. 1, be equipped with a plurality of wearing layers on the cooler body, including a plurality of annular wearing layers of cooler body periphery and the interior concave wearing layer of setting in cooler body bottom, the wearing layer adopts the mode of build-up welding to add, at first 2mm of fluting on the body, on the build-up welding go to fill up again. Wherein the annular wear-resistant layer comprises a wear-resistant layer first ring 5.1, a wear-resistant layer second ring 5.2 and a wear-resistant layer third ring 5.3 shown in the figure; the concave wear-resistant layer comprises a fourth ring 5.4 of the wear-resistant layer and a disc-shaped wear-resistant layer arranged on the end face of the bottom end of the cooler body, and the fourth ring 5.4 of the wear-resistant layer and the disc-shaped wear-resistant layer are integrated to form the concave wear-resistant layer. The first ring 5.1, the second ring 5.2, the third ring 5.3 and the fourth ring 5.4 have the same width and the same spacing distance. An annular interval without the wear-resistant layer is arranged between the adjacent annular wear-resistant layers and comprises a first wear-resistant layer interval 6.1, a second wear-resistant layer interval 6.2 and a third wear-resistant layer interval 6.3. The annular wear layer and the annular space may be of equal width. As shown in FIG. 4, the part of the cooling wall which enters the furnace and exceeds the cooling wall is covered with a wear-resistant layer with the thickness of 3-5 mm, namely the concave wear-resistant layer, so as to enhance the wear-resistant performance of the micro cooler. The annular interval is preferably a copper cooler body, the wear-resistant layer is arranged in a grooving surfacing mode, and the original cooler body is reserved at other places.
Further, the width of the wear-resistant layers which are annularly distributed is 20-30 mm, and the distance between the wear-resistant layers is 20-30 mm, namely the width of the annular interval between the adjacent annular wear-resistant layers. The annular wear-resistant layer is sleeved on the cooler body.
In the invention, the wear-resistant layer and the copper are distributed at intervals, so that the micro cooler has enough capacity to resist the abrasion of furnace materials after the cooling wall slag crust disappears, and the slag crust can be rapidly re-condensed by virtue of the high heat-conducting property of the copper.
Furthermore, the steel sleeve 2 is fixedly connected with the water outlet pipe 2.1 and the flange 3, and can be welded together or integrally formed, the micro cooler is mainly connected and fixed with the furnace shell 9 through the flange 3, and cooling water flows out of the water outlet pipe. The end face of the steel sleeve 2 is provided with a reserved matching hole 2.2, the inner core pipe penetrates through the hole, and the inner core pipe and the hole are in welded sealing connection. A steel sleeve inner water channel 8.3 is arranged between the steel sleeve 2 and the inner core tube 4. The water outlet pipe 2.1 is communicated with a water channel 8.3 in the steel sleeve. The water inlet pipe 4.1 and one end of the inner core pipe 4 far away from the cooler body are fixedly and hermetically connected, and cooling water enters the inner core pipe 4 through the water inlet pipe 4.1 and is discharged through the water outlet pipe 2.1 after the cooling effect is achieved.
Be equipped with flange grout mouth 3.2 on the flange, flange grout mouth 3.2 and grout pipe 3.1's one end welding, flange grout mouth link up around the flange, and adjacent cooler body outer wall setting. After the cooler body 1 is placed into a furnace wall structure (namely, the furnace shell 9, the ramming mass 10, the cooling wall 11 and the slag crust 12 which are sequentially arranged in a layered manner), grouting material 13 is injected into the furnace through a grouting pipe, and the grouting material 13 is poured into the furnace along a flange grouting opening and a gap between the cooler body and the furnace wall structure, so that the cooler body is coated and filled in the gap by the grouting material. When the cooling strength of the cooling wall is not enough to generate slag crust, the grouting material is considered to be started, and the grouting material can be attached to the front end of the micro cooler to protect the cooler from being abraded and prolong the service life of the cooler.
The steel sleeve 2 is fixedly connected with the water inlet pipe 4.1, the water outlet pipe 2.1 and the grouting pipe 3.1, and the stability of the whole structure is facilitated.
And further, the inner core penetrates through a reserved matching hole in the end face of the steel sleeve and enters the copper cooler body. Leave rivers passageway between inner core pipe and the cooler body, the welding has a plurality of rivers baffles between inner core pipe and the cooler body, and the preferred 2 ~ 4 of rivers baffle quantity. The water flow baffle, the inner core pipe 4, the inside of the steel sleeve and the inside of the copper cooler body are enclosed together to form a cooling water channel.
According to the invention, the existence of the cooling water flow baffle can uniformly distribute water flow, so that the micro cooler is cooled more uniformly.
When the micro cooler works, cooling water flows into the inner core pipe through the water inlet pipe and directly reaches the bottom water channel 8.4 at the inner end of the micro cooler, then enters the water flow channel between the inner core pipe and the cooler body, flows along the water flow baffle in a rotating mode under the action of the water flow baffle and cools the cooler body, and then enters the steel sleeve inner water channel 8.3 and flows out through the water outlet pipe 2.1.
The water flow baffle plates can be arranged in a spiral mode along the outer wall of the inner core pipe, so that water flow has the characteristic of rotary flow, the flow path of the water flow is increased, and the cooling effect is improved.
Example 1:
a blast furnace micro cooler mainly comprises a cooler body 1, a flange 3, an inner core tube 4 and a steel sleeve 2 (namely a steel sleeve). The steel sleeve 2 is provided with a water outlet pipe 2.1 and a reserved matching hole 2.2, and the flange 3 is provided with a grouting pipe 3.1 and a flange grouting opening 3.2; wherein, the inner core tube 4 is integrally connected with the water inlet tube 4.1; the wear-resistant layer is mainly formed by combining different annular structures, namely a plurality of annular wear-resistant layers which are uniformly distributed on the copper cooler body 1, such as a first wear-resistant layer ring 5.1, a second wear-resistant layer ring 5.2, a third wear-resistant layer ring 5.3, a fourth wear-resistant layer ring 5.4 positioned at the end part and a circular wear-resistant layer on the end surface, which are shown in the figure. Annular intervals without the wear-resistant layers exist among the annular wear-resistant layers, and the annular intervals comprise first wear-resistant layer intervals 6.1, second wear-resistant layer intervals 6.2 and third wear-resistant layer intervals 6.3. The annular wear layer and the annular space may be of equal width. The rivers baffle has a plurality of, and this embodiment selects for use three, including first rivers baffle 7.1, second rivers baffle 7.2, third rivers baffle 7.3, three rivers baffle all with inner core pipe 4 welding together to cooperate with copper cooler body. The cooling water channel consists of a bottom water channel 8.4, an inner core water channel 8.1 (namely, the inner tube space of the inner core tube, which is marked by a partial section in figure 1), a baffle gap water channel 8.2 and a steel sleeve water channel 8.3.
In the technical scheme, one end of the copper cooler body 1 is opened and is welded with the first end of the steel sleeve 2; the other end of the cooler body 1 is not opened, the thickness is 20-30 mm, and the service life of the front end is guaranteed through thickening.
In the technical scheme, one end of the steel sleeve is opened and welded with the copper cooler body 1, the other end of the steel sleeve is provided with a reserved matching hole 2.2 and is in sealed welding connection with the inner core pipe 4, and the steel sleeve is connected with the water outlet pipe, the water inlet pipe (mainly connected with the inner core pipe) and the grouting pipe, so that the stability of the whole structure is facilitated.
In the technical scheme, the steel sleeve 2, the inner core tube 4 and the flange 3 are welded into a whole, wherein the flange is reserved with the grouting hole 3.2, the grouting tube 3.1 is welded at the position, and the flange 3 is directly welded with the furnace shell 9, so that the welding difficulty of welding the copper body and the steel furnace shell is reduced, and the stable connection of the micro cooler and the furnace shell is ensured.
Among the above-mentioned technical scheme, grout hole 3.2 communicates with each other in with the stove, can artificially pour grouting material 13 through grout pipe 3.1 when cooling wall cooling strength is not enough to produce the cinder, and grouting material 13 can be attached to the micro-cooler front end, and the protection cooler is not worn and torn, prolongs its life.
Among the above-mentioned technical scheme, three rivers baffle and the welding of inner core pipe 4 are in the same place, and welding process guarantees to distribute evenly between the baffle to cooperate in inserting copper cooler body 1 to reserve water passageway 8.4, according to experience water passageway width be between 15 ~ 25 mm.
In the above technical scheme, the three water flow baffles are spirally distributed on the inner core tube 4 to better distribute the cooling water. Among the above-mentioned technical scheme, the first ring of annular wearing layer 5.1, annular wearing layer second ring 5.2, annular wearing layer third ring 5.3 and annular wearing layer fourth ring 5.4 adopt the build-up welding mode to weld on copper cooler body 1, and the thickness scope of annular wearing layer is in 3 ~ 5 mm.
Among the above-mentioned technical scheme, four annular wearing layer width scope are 20 ~ 30mm, are provided with evenly distributed's interval between the adjacent annular wearing layer, and the width scope at interval is 20 ~ 30 mm. The interval between the annular wear-resistant layers 5.1-5.4 is the copper cooler body 1, the existence of the wear-resistant layers 5.1-5.4 is helpful for the micro cooler 1 to have enough capacity to resist furnace charge abrasion after the cooling wall slag crust 12 disappears, and on the other hand, the slag crust 12 can be rapidly re-condensed by virtue of the high heat-conducting property of copper.
In the technical scheme, the distribution range of the annular wear-resistant layer on the length is the part which protrudes out of the cooling wall during installation.
In the above technical solution, the material of the annular wear-resistant layer includes, but is not limited to, iron-based alloy, nickel-based alloy, brass, and ceramic wear-resistant material.
Among the above-mentioned technical scheme, the micro cooler is mainly connected fixedly through flange 3 and stove outer covering, and copper cooler body 1 gets into blast furnace inside and carries out the heat exchange.
Among the above-mentioned technical scheme, miniature cooler 1 during operation, cooling water flows in inner core pipe 4 through inlet tube 4.1, and cooling water is in inner core pipe 4 direct to miniature cooler's bottom water passageway 8.4, follows the rotatory flow of baffle and cools off cooler body 1 under the effect of rivers baffle afterwards, gets into steel bushing 2 afterwards, flows out along outlet pipe 2.1 at last.
The blast furnace micro cooler provided by the embodiment of the application is described in detail above. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core idea; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In the present application, the terms "upper", "lower", "left", "right", "inner", "outer", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. Some of the above terms may be used to indicate other meanings in addition to orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of dependency or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate. The term "and/or" as used herein is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Claims (10)
1. A blast furnace micro cooler is characterized by comprising a cooler body, a sleeve, an inner core pipe, a water inlet pipe, a water outlet pipe and a plurality of water flow baffles;
the cooler body is of a tubular structure with one open end; the inner core pipe is tubular with openings at two ends;
the first end of the sleeve is fixedly connected with the open end of the cooler body in a sealing manner; the inner core pipe is inserted in the sleeve and the cooler body; the second end of the sleeve is hermetically connected with the outer wall of the inner core pipe; water flow channels are arranged between the inner core pipe and the cooler body and between the inner core pipe and the sleeve;
a water outlet pipe is arranged on the sleeve; a water inlet pipe is arranged at one end of the inner core pipe, which is far away from the cooler body;
the water flow baffle is fixed between the inner core pipe and the cooler body;
and cooling water enters the inner core pipe from the water inlet pipe, then enters the water flow channel under the action of the water flow baffle, and finally is discharged from the water outlet pipe.
2. The blast furnace micro cooler according to claim 1, further comprising a cooler fixing member, wherein the cooler fixing member is fitted around the first end of the sleeve for fixedly connecting with the blast furnace.
3. The blast furnace micro cooler according to claim 2, wherein the cooler fixing member is provided with a grouting port, and the grouting port penetrates through the front and rear of the cooler fixing member;
the front end of the grouting opening is connected with the grouting pipe, and the end face of the rear end of the grouting opening is tightly attached to the outer wall of the cooler body.
4. The blast furnace micro cooler according to claim 1, wherein the cooler body is provided with a plurality of annular wear-resistant layers on the periphery, and the outer surface of the non-opening end of the cooler body is provided with an inner concave wear-resistant layer.
5. The blast furnace micro cooler according to claim 4, wherein the inner concave wear layer comprises an annular wear layer and a disc-shaped wear layer which are integrally connected, the annular wear layer is sleeved on the periphery of the end portion of the cooler body, and the disc-shaped wear layer is arranged on the end surface of the cooler body.
6. The blast furnace micro cooler of claim 1, wherein the cooler body is a copper tube.
7. The blast furnace micro cooler according to claim 1, wherein the thickness of the non-open end face of the cooler body is 20 to 30 mm.
8. The blast furnace micro cooler according to claim 1, wherein the water flow baffle is spirally disposed along an outer wall of the inner core tube.
9. The blast furnace micro cooler of claim 8, wherein the number of the water flow baffles is 2-4.
10. A blast furnace comprising a blast furnace micro cooler according to any one of claims 1 to 9; the cooler body of the blast furnace micro cooler is inserted in a blast furnace wall structure, and grouting material filled by the grouting pipe and the grouting opening is arranged in a gap between the cooler body and the blast furnace wall structure.
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| CN202210428096.6A CN114908205A (en) | 2022-04-22 | 2022-04-22 | Miniature cooler of blast furnace |
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| CN202210428096.6A CN114908205A (en) | 2022-04-22 | 2022-04-22 | Miniature cooler of blast furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117467809A (en) * | 2023-12-22 | 2024-01-30 | 河北万丰冶金备件有限公司 | Processing method of vertex angle reinforced cooling wall and cooling wall thereof |
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| CN202576457U (en) * | 2012-03-31 | 2012-12-05 | 闽东宏宇冶金备件有限公司 | Blast furnace cooling stick |
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Application publication date: 20220816 |