CN205803516U - Blast furnace full-sealing high-strength furnace bottom cooling structure - Google Patents

Abstract

The utility model proposes a blast furnace fully sealed high-strength furnace bottom cooling structure, which is arranged at the bottom sealing plate of the blast furnace, which includes: a plurality of upper-layer I-beams, located in the furnace shell of the blast furnace, and arranged side by side at intervals in sequence Set on the bottom sealing plate of the furnace, wherein at least one of the upper I-beams is equipped with a cooling water pipe; the copper sealing plate is laid on each of the upper I-beams, and its periphery is in contact with the inner side wall of the furnace shell phase seal; a plurality of lower I-beams are arranged side by side at intervals under the furnace bottom sealing plate. The fully-sealed high-strength bottom cooling structure of the blast furnace of the utility model strengthens the bottom sealing plate in two directions, effectively prevents the bottom plate from being deformed and upturned, ensures the life of the bottom cooling water pipe, and overcomes the defects of the prior art.

Description

Blast furnace fully sealed high-strength furnace bottom cooling structure

technical field

The utility model belongs to the technical field of iron and steel metallurgy, and relates to a fully sealed high-strength furnace bottom cooling structure for blast furnaces, submerged arc furnaces and cupolas.

Background technique

At present, in order to meet the requirements of long life of blast furnaces at home and abroad, the cooling form of the furnace bottom is mostly water cooling. There are two forms of furnace bottom water cooling: setting cooling water pipes above the furnace bottom sealing plate and setting cooling water pipes under the sealing plate. From the cooling point of view, it is more appropriate to set the cooling water pipe on the furnace bottom sealing plate, but there is a problem with the furnace bottom water cooling pipe, which is not good for the furnace bottom carbon brick; The bottom of the plate is suitable, but the water pipe and the furnace bottom sealing plate must be tight to ensure that the heat can be taken away by the water, and the construction requirements are high. At present, some blast furnaces in production have the problem of upturning of the furnace bottom sealing plate, which affects the normal production of the blast furnace.

How to not only ensure better furnace bottom cooling strength, but also ensure the life of the furnace bottom cooling water pipe, and prevent the furnace bottom sealing plate from warping is an extremely important and unresolved problem.

In view of this, the designer has developed a fully sealed high-strength furnace bottom cooling structure for blast furnaces based on years of experience in production design in this field and related fields, in order to solve the problems existing in the prior art.

Utility model content

The purpose of this utility model is to provide a fully sealed high-strength furnace bottom cooling structure for a blast furnace, which can strengthen the furnace bottom sealing plate in two directions, effectively prevent the furnace bottom plate from being deformed and upturned, ensure the life of the furnace bottom cooling water pipe, and overcome the existing technology Defects.

For this reason, the utility model proposes a fully sealed high-strength furnace bottom cooling structure for a blast furnace, which is arranged at the furnace bottom sealing plate of the blast furnace, which includes:

A plurality of upper-layer I-beams are located in the furnace shell of the blast furnace and arranged side by side on the furnace bottom sealing plate at intervals in sequence, wherein at least one of the upper-layer I-beams is equipped with a cooling water pipe;

A copper sealing plate is laid on each of the upper-layer I-beams, and its periphery is sealed with the inner sidewall of the furnace shell;

A plurality of lower-layer I-beams are arranged side by side at intervals in sequence under the furnace bottom sealing plate.

The above-mentioned blast furnace fully sealed high-strength furnace bottom cooling structure, wherein, the space between each adjacent upper layer of I-beams is filled with carbon ramming material.

The above-mentioned fully sealed high-strength furnace bottom cooling structure for a blast furnace, wherein a heat-resistant cement mortar layer is filled between the lower I-beam and the furnace bottom sealing plate.

The blast furnace fully sealed high-strength furnace bottom cooling structure as described above, wherein, the lower I-beams are supported on the blast furnace foundation of the blast furnace, and the spaces between adjacent lower I-beams are filled with resistant hot concrete.

The fully sealed high-strength furnace bottom cooling structure of the blast furnace as described above, wherein there are additionally fixed bolts, the fixed bolts are located on the outside of the furnace shell, and they are correspondingly installed on the furnace bottom sealing plate, the heat-resistant cement The mortar layer, the lower I-beam, the heat-resistant concrete and the blast furnace foundation.

The fully sealed high-strength furnace bottom cooling structure of the blast furnace described above, wherein the lower layer of I-beams and the upper layer of I-beams are arranged perpendicularly to each other.

The above-mentioned fully sealed high-strength furnace bottom cooling structure of the blast furnace, wherein a reinforcing ring is sleeved on the outer side of the furnace shell of the blast furnace in the circumferential direction, and the reinforcing ring is supported on the outer edge of the furnace bottom sealing plate through ribs superior.

The fully sealed high-strength furnace bottom cooling structure of a blast furnace as described above, wherein angle steel is welded on the web of the upper I-beam, and a clamp is set on the water pipe, and the clamp is connected and fixed to the angle steel .

In the above-mentioned fully-sealed high-strength furnace bottom cooling structure for a blast furnace, the clamp is in an inverted U shape, and its two ends are inserted on the angle steel, and nuts are screwed on the ends.

The fully-sealed high-strength furnace bottom cooling structure of the blast furnace proposed by the utility model, by setting the upper layer of I-steel and the lower layer of I-steel, strengthens the furnace bottom sealing plate in two directions, effectively preventing the furnace bottom plate from being deformed and upturned; the cooling water pipe is installed on the upper layer On the I-beam, it can meet the requirements of long life of the blast furnace; by filling the upper I-beam with carbon ramming material, the cooling capacity of the furnace bottom is strengthened; the laying of the copper sealing plate ensures the sealing of the furnace bottom and ensures the cooling of the furnace bottom life of the pipes.

The fully sealed high-strength furnace bottom cooling structure of the blast furnace proposed by the utility model has a reinforcing ring outside the furnace shell, which can prevent the thermal deformation of the furnace bottom sealing plate due to uneven temperature, and further strengthen the furnace shell and the sealing plate.

Description of drawings

Fig. 1 is a schematic diagram of a fully sealed high-strength furnace bottom cooling structure for a blast furnace of the present invention.

Explanation of main component labels:

1 Blast furnace 11 Furnace bottom sealing plate

12 Furnace Shell 13 Blast Furnace Foundation

14 Reinforcing ring 15 Rib

2 Upper I-beam 20 Cooling water pipe

201 Clamp 202 Nut

21 Web 22 Angle

3 Copper sealing plate 4 Lower I-beam

5 carbon ramming material 6 heat-resistant cement mortar layer

7 Heat-resistant concrete 8 Fixing bolts

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation of the present utility model is now described with reference to the accompanying drawings:

Fig. 1 is a schematic diagram of a fully sealed high-strength furnace bottom cooling structure for a blast furnace of the present invention.

Referring to Fig. 1, the blast furnace fully sealed high-strength furnace bottom cooling structure proposed by the utility model is arranged at the furnace bottom sealing plate 11 of the blast furnace 1, which includes a plurality of upper-layer I-beams 2, copper sealing plates 3 and a plurality of lower-layer I-beams. Zi Gang 4, of which:

The upper-layer I-beam 2 is located in the furnace shell 12 of the blast furnace 1, and is arranged side by side on the furnace bottom sealing plate 11 at intervals, and at least one of the upper-layer I-beams 2 is equipped with a cooling water pipe 20, wherein, the specific number of the cooling water pipes 20 can be determined according to actual needs;

The copper sealing plate 3 is laid on each of the upper-layer I-beams 2, and its periphery is sealed with the inner sidewall of the furnace shell 12. By arranging the copper sealing plate 3, the sealing performance of the bottom of the furnace is ensured, and the furnace bottom is guaranteed. The life-span of cooling water pipe at the bottom, as for the thickness of this copper sealing plate 3, can be decided according to actual needs;

The lower-layer I-beams 4 are arranged side by side at intervals in sequence under the furnace bottom sealing plate 11 . With such arrangement, the furnace bottom sealing plate 11 can be better bidirectionally reinforced, effectively preventing the furnace bottom plate 11 from being deformed and upturned.

In order to enhance the cooling capacity of the furnace bottom, as shown in FIG. 1 , the spaces between the adjacent upper-layer I-beams 2 are filled with carbon ramming material 5 to achieve a better cooling effect.

Wherein, a heat-resistant cement mortar layer 6 is filled between the lower I-beam 4 and the furnace bottom sealing plate 11 . Further, the lower I-beam 4 is supported on the blast furnace foundation 13 of the blast furnace 1 , and the space between each adjacent lower I-beam 4 is filled with heat-resistant concrete 7 .

By arranging the heat-resistant cement mortar layer 6 and the heat-resistant concrete 7, the heat insulation effect can be improved, and heat can be prevented from continuously being transmitted to the blast furnace foundation 13, thereby affecting its service life. In practical application, each of the lower-layer I-beams 4 can be laid side by side on the blast furnace foundation 13 first, and then, heat-resistant concrete 7 is filled with grouting on both sides of each of the lower-layer I-beams 4 . , and then set the heat-resistant cement mortar layer 6, and finally, lay the furnace bottom sealing plate 11 ... and other follow-up work.

Preferably, fixing bolts 8 are additionally provided, and the fixing bolts 8 are located outside the furnace shell 12, which are correspondingly installed in the furnace bottom sealing plate 11, the heat-resistant cement mortar layer 6, and the lower layer. beam 4, the heat-resistant concrete 7 and the blast furnace foundation 13, so as to further connect and fix the lower I-beam 4 and the blast furnace foundation 13.

As shown in the figure, in a preferred upper embodiment, the lower I-beam 4 and the upper I-beam 2 are arranged perpendicular to each other. With such an arrangement, no matter whether the furnace bottom sealing plate 11 is deformed upwards or downwards, the best two-way reinforcement effect can be achieved.

In order to prevent the thermal deformation of the furnace bottom sealing plate due to uneven temperature, the furnace bottom sealing plate 11 and the furnace shell 12 are further strengthened. A reinforcing ring 14 is sleeved on the outer side of the furnace shell 12 of the blast furnace 1 along the circumferential direction. The ring 14 is supported by ribs 15 on the outer edge of the furnace bottom cover 11 .

As shown in FIG. 1 , an angle steel 22 is welded on the web 21 of the upper I-beam 2 , and a clamp 201 is sleeved on the water pipe 20 , and the clamp 201 is connected and fixed to the angle steel 22 . Wherein, for the specific quantity of angle steel 22 and hoop 201, it can be determined according to the actual situation. The angle steel 22 is provided with a plurality of clips 201 .

Further, the clamp 201 is in the shape of an inverted U, and its two ends are inserted on the angle steel 22, and a nut 202 is screwed on its end to fasten the water pipe 20 and prevent it from falling from the The upper strata I-beam 2 is loosened.

To sum up, the fully sealed high-strength furnace bottom cooling structure of the blast furnace proposed by the utility model, by setting the upper layer of I-steel and the lower layer of I-steel, bidirectionally strengthens the furnace bottom sealing plate, effectively preventing the deformation of the furnace bottom plate; The cooling water pipe is installed on the upper side of the I-beam, which can meet the requirements of long life of the blast furnace; the cooling capacity of the furnace bottom is enhanced by filling the upper I-beam with carbon ramming material; the laying of the copper sealing plate ensures the sealing of the furnace bottom To ensure the life of the furnace bottom cooling water pipe.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A blast furnace fully sealed high-strength furnace bottom cooling structure, which is arranged at the furnace bottom sealing plate of the blast furnace, is characterized in that the blast furnace fully sealed high-strength furnace bottom cooling structure comprises: A plurality of upper-layer I-beams are located in the furnace shell of the blast furnace and arranged side by side on the furnace bottom sealing plate at intervals in sequence, wherein at least one of the upper-layer I-beams is equipped with a cooling water pipe; A copper sealing plate is laid on each of the upper-layer I-beams, and its periphery is sealed with the inner sidewall of the furnace shell; A plurality of lower-layer I-beams are arranged side by side at intervals in sequence under the furnace bottom sealing plate. 2. The blast furnace fully sealed high-strength furnace bottom cooling structure according to claim 1, characterized in that, the spaces between the adjacent upper-layer I-beams are filled with carbon ramming material. 3. The fully-sealed high-strength furnace bottom cooling structure of a blast furnace according to claim 2, wherein a heat-resistant cement mortar layer is filled between the lower I-beam and the furnace bottom sealing plate. 4. The fully-sealed high-strength furnace bottom cooling structure for a blast furnace as claimed in claim 3, wherein the lower I-beams are supported on the blast furnace foundation of the blast furnace, and each of the adjacent lower I-beams The space between is filled with heat-resistant concrete. 5. The fully-sealed high-strength furnace bottom cooling structure of a blast furnace according to claim 4, characterized in that there are additionally fixed bolts, the fixed bolts are located on the outside of the furnace shell and are correspondingly installed in the furnace bottom seal plate, the heat-resistant cement mortar layer, the lower I-beam, the heat-resistant concrete and the blast furnace foundation. 6. The fully sealed high-strength bottom cooling structure of a blast furnace according to claim 5, wherein the lower layer of I-beams and the upper layer of I-beams are arranged perpendicularly to each other. 7. The blast furnace fully sealed high-strength bottom cooling structure as claimed in claim 1 or 6, characterized in that a reinforcing ring is sheathed on the outer side of the furnace shell of the blast furnace along the circumferential direction, and the reinforcing ring is supported on the On the outer edge of the furnace bottom sealing plate. 8. The fully-sealed high-strength furnace bottom cooling structure of a blast furnace according to claim 1, wherein the lower layer of I-beams and the upper layer of I-beams are arranged perpendicularly to each other. 9. The fully-sealed high-strength furnace bottom cooling structure for a blast furnace as claimed in claim 1, 6 or 8, wherein an angle steel is welded on the web of the upper I-beam, and a clamp is set on the water pipe , the clip is connected and fixed with the angle steel. 10. The fully-sealed high-strength furnace bottom cooling structure for a blast furnace as claimed in claim 9, wherein the hoop is in an inverted U shape, and its two ends are inserted on the angle steel, and screwed on its end Connected with nuts.