CN211373215U - Heat accumulating type steel pushing heating furnace bottom structure - Google Patents
Heat accumulating type steel pushing heating furnace bottom structure Download PDFInfo
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- CN211373215U CN211373215U CN201922101668.6U CN201922101668U CN211373215U CN 211373215 U CN211373215 U CN 211373215U CN 201922101668 U CN201922101668 U CN 201922101668U CN 211373215 U CN211373215 U CN 211373215U
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Abstract
The utility model provides a heat accumulation formula pushes away furnace bottom structure of steel heating furnace includes fire-resistant heat preservation, thermal-insulated structure and bearing structure from top to bottom in order, thermal-insulated structure is solid construction, thermal-insulated structure's upper surface with the lower surface of fire-resistant heat preservation meets, thermal-insulated structure's lower surface with bearing structure's upper surface meets. The utility model provides a bottom structure of a heat accumulating type steel pushing heating furnace, which cancels a bottom steel plate in the bottom structure in the prior art, and directly and fundamentally avoids the condition that the furnace body steel structure is damaged due to the deformation of the bottom steel plate when a fire-resistant heat preservation layer is burnt through; simultaneously the utility model discloses a set up the thermal-insulated structure that has solid construction between fire-resistant heat preservation and bearing structure, when fire-resistant heat preservation is burnt out, can effectively carry out thermal-insulated protection to bearing structure through thermal-insulated structure, effectively avoid the condition of bearing structure overheat damage to take place.
Description
Technical Field
The utility model belongs to the technical field of metallurgical heating equipment technique and specifically relates to indicate a heat accumulation formula pushes away stove bottom structure of steel heating furnace.
Background
The push type heating furnace is a common structure in the metallurgical industry project, when in use, a steel billet is pushed into the heating furnace by a push steel machine, and the steel billet slides on a slide rail supported by a water cooling pipe, so that the upper surface and the lower surface of the billet can be heated.
The hearth structure of the present heating furnace is composed of a refractory brick heat insulation layer 100, a hearth steel plate 200, an air heat insulation layer 300 formed by a hearth overhead steel beam 310, and a heat-resistant reinforced concrete support structure 400 from top to bottom, as shown in fig. 1. Although the furnace bottom structure is convenient to install, in actual production, when the refractory brick insulating layer 100 in the furnace bottom structure is burnt through, the refractory brick insulating layer 100 is hard to be found, once the refractory brick insulating layer 100 is burnt through, the furnace bottom steel plate 200 can be rapidly deformed due to the rapidly raised temperature, and the safety of the furnace body steel structure is damaged; in a more serious case, the strength of the reinforcing bars in the heat-resistant reinforced concrete support structure 400 is also sharply reduced due to the temperature increase, and the temperature stress of the concrete is sharply increased, thereby causing the destruction of the hearth structure. Once the heat-resistant reinforced concrete supporting structure 400 of the heating furnace bottom structure is damaged, the repairing difficulty is large, the investment is high, the safety degree is low, and generally, the problem can be solved only by adopting a remote reconstruction mode.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heat accumulation formula pushes away furnace bottom structure of steel heating furnace can effectively eliminate among the current furnace bottom structure because of the harm that resistant firebrick heat preservation burns through to furnace body steel construction and heat-resisting reinforced concrete bearing structure production.
In order to achieve the above object, the utility model provides a heat accumulation formula pushes away furnace bottom structure of steel heating furnace, wherein, heat accumulation formula pushes away furnace bottom structure of steel heating furnace from top to bottom and includes fire-resistant heat preservation, thermal-insulated structure and bearing structure in order, thermal-insulated structure is solid construction, thermal-insulated structure's upper surface with the lower surface of fire-resistant heat preservation meets, thermal-insulated structure's lower surface with bearing structure's upper surface meets.
The heat accumulating type push steel heating furnace bottom structure comprises a first heat insulation layer and a second heat insulation layer from top to bottom.
The furnace bottom structure of the heat accumulating type push steel heating furnace is characterized in that the first heat insulation layer is a heat-resistant concrete heat insulation layer.
The furnace bottom structure of the heat accumulating type push steel heating furnace is characterized in that the heat-resistant concrete heat-insulating layer is a heat-resistant concrete heat-insulating layer with the strength grade of more than or equal to C30.
The furnace bottom structure of the heat accumulating type steel pushing heating furnace is characterized in that the heat-resistant concrete heat-insulating layer is made of plain concrete or reinforced concrete.
The furnace bottom structure of the heat accumulating type push steel heating furnace is characterized in that the heat-resistant concrete heat-insulating layer is a heat-resistant concrete heat-insulating layer with the heat-resistant temperature of 1200 ℃.
The furnace bottom structure of the heat accumulating type push steel heating furnace is characterized in that the second heat insulation layer is a blast furnace water slag heat insulation layer.
The furnace bottom structure of the heat accumulating type push steel heating furnace is characterized in that the blast furnace water slag heat insulation layer has a density less than or equal to 500kg/m3The blast furnace granulated slag thermal insulation layer is made of the blast furnace granulated slag.
The furnace bottom structure of the heat accumulating type push steel heating furnace is characterized in that the blast furnace granulated slag heat insulation layer is a blast furnace granulated slag heat insulation layer with the heat resistance temperature of 900 ℃.
The furnace bottom structure of the heat accumulating type push steel heating furnace is characterized in that the heat accumulating type push steel heating furnace is a furnace bottom structure, the heat accumulating type.
Compared with the prior art, the utility model has the advantages as follows:
the utility model provides a bottom structure of a heat accumulating type steel pushing heating furnace, which cancels a bottom steel plate in the bottom structure in the prior art, and directly and fundamentally avoids the condition that the furnace body steel structure is damaged due to the deformation of the bottom steel plate when a fire-resistant heat preservation layer is burnt through; simultaneously the utility model discloses a set up the thermal-insulated structure that has solid construction between fire-resistant heat preservation and bearing structure, when fire-resistant heat preservation is burnt out, can effectively carry out thermal-insulated protection to bearing structure through thermal-insulated structure, effectively avoid the condition of bearing structure overheat damage to take place.
Drawings
The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. Wherein:
FIG. 1 is a schematic view of a prior art hearth structure;
fig. 2 is a schematic structural view of the furnace bottom structure of the heat accumulating type push steel heating furnace provided by the utility model.
The reference numbers illustrate:
the prior art is as follows:
100. a refractory brick heat-insulating layer;
200. a furnace bottom steel plate;
300. the formed air heat insulation layer;
310. a furnace bottom overhead steel beam;
400. a heat resistant reinforced concrete support structure;
the utility model discloses:
1. a fire-resistant insulating layer;
2. a thermally insulating structure;
21. a first insulating layer;
22. a second thermal insulation layer;
3. a support structure.
Detailed Description
In order to clearly understand the technical solution, purpose and effect of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 2, the utility model provides a heat accumulation formula pushes away furnace bottom structure of steel heating furnace, wherein, heat accumulation formula pushes away furnace bottom structure of steel heating furnace and includes fire-resistant heat preservation 1, thermal-insulated structure 2 and bearing structure 3 from top to bottom in order, and thermal-insulated structure 2 is solid construction, and thermal-insulated structure 2's upper surface meets with fire-resistant heat preservation 1's lower surface, and thermal-insulated structure 2's lower surface meets with bearing structure 3's upper surface. The utility model provides a bottom structure of a heat accumulating type steel pushing heating furnace, which cancels a bottom steel plate in the bottom structure in the prior art, and directly and fundamentally avoids the condition that the furnace body steel structure is damaged due to the deformation of the bottom steel plate when a fire-resistant heat preservation layer 1 is burnt through; simultaneously the utility model discloses a set up thermal-insulated structure 2 that has solid construction between fire-resistant heat preservation 1 and bearing structure 3, when fire-resistant heat preservation 1 is burnt on, can effectively carry out thermal-insulated protection to bearing structure 3 through thermal-insulated structure 2, effectively avoid the condition of the 3 overheated damages of bearing structure to take place.
Further, as shown in fig. 2, the heat accumulating type steel pushing heating furnace bottom structure provided by the present invention, wherein the heat insulation structure 2 comprises a first heat insulation layer 21 and a second heat insulation layer 22 from top to bottom, and the first heat insulation layer 21 and the second heat insulation layer 22 can be made of different heat insulation materials, so as to ensure the heat insulation effect of the heat insulation structure 2; and the thermal insulation coefficients of the first thermal insulation layer 21 and the second thermal insulation layer 22 can be set to be different, preferably, the thermal insulation coefficient of the first thermal insulation layer 21 can be set to be higher than that of the second thermal insulation layer 22 because the ambient temperature at the position of the first thermal insulation layer 21 is higher than that of the second thermal insulation layer 22 due to the direct contact of the first thermal insulation layer 21 with the fire-resistant insulation layer 1, and therefore the thermal insulation capability of the first thermal insulation layer 21 should be better than that of the second thermal insulation layer 22.
Preferably, the utility model provides a heat accumulation formula pushes away furnace bottom structure of steel heating furnace, wherein, first insulating layer 21 is heat-resisting concrete insulating layer. The heat-resistant concrete heat-insulating layer is a heat-resistant concrete heat-insulating layer which has the strength grade of more than or equal to C30, is made of plain concrete or reinforced concrete and has the heat-resistant temperature of 1200 ℃. The intensity of heat-resisting concrete insulating layer is high, can bear the weight of its upper portion fire-resistant heat preservation 1, and heat-resisting temperature is high, can effectively completely cut off heat energy after the fire-resistant heat preservation 1 of upper portion above that is burnt out, carries out thermal-insulated protection to bearing structure 3. The heat-resistant concrete heat-insulating layer is generally made of plain concrete, and if the heating furnace is large in size, a small amount of reinforcing steel bars can be arranged to prevent shrinkage cracks during concrete construction.
Preferably, the utility model provides a heat accumulation formula pushes away furnace bottom structure of steel heating furnace, wherein, second insulating layer 22 is blast furnace grain slag insulating layer. The blast furnace granulated slag heat insulation layer is made of blast furnace granulated slag with the density of less than or equal to 500kg/m3 and has the heat-resistant temperature of 900 ℃. The blast furnace granulated slag is solid waste in the metallurgical industry, and the blast furnace granulated slag thermal insulation layer effectively utilizes the blast furnace granulated slag, so that the green production in the metallurgical industry is promoted.
As preferred, the utility model provides a heat accumulation formula pushes away stove bottom structure of steel heating furnace, wherein, the fire-resistant heat preservation 1 that forms is built for resistant firebrick to guarantee its intensity and heat resistance, and bearing structure 3 is heat-resistant reinforced concrete bearing structure 3 that reinforced concrete made, in order to guarantee its structural strength.
Compared with the prior art, the utility model has the advantages as follows:
the utility model provides a furnace bottom structure of a heat accumulating type steel pushing heating furnace, which cancels a furnace bottom steel plate in the furnace bottom structure in the prior art, and directly and fundamentally avoids the condition that the furnace body steel structure is damaged due to the deformation of the furnace bottom steel plate when a fire-resistant heat preservation layer is burnt through; simultaneously the utility model discloses a set up the thermal-insulated structure that has solid construction between fire-resistant heat preservation and bearing structure, when fire-resistant heat preservation is burnt out, can effectively carry out thermal-insulated protection to bearing structure through thermal-insulated structure, effectively avoid the condition of bearing structure overheat damage to take place.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (10)
1. The utility model provides a heat accumulation formula pushes away furnace bottom structure of steel heating furnace, its characterized in that, heat accumulation formula pushes away furnace bottom structure of steel heating furnace includes fire-resistant heat preservation, thermal-insulated structure and bearing structure from top to bottom in order, thermal-insulated structure is solid construction, thermal-insulated structure's upper surface with the lower surface of fire-resistant heat preservation meets, thermal-insulated structure's lower surface with bearing structure's upper surface meets.
2. The bottom structure of a regenerative steel-pushing heating furnace according to claim 1, wherein the heat insulation structure comprises a first heat insulation layer and a second heat insulation layer from top to bottom.
3. The bottom structure of a regenerative steel-pushing heating furnace according to claim 2, wherein said first thermal insulation layer is a heat-resistant concrete thermal insulation layer.
4. The bottom structure of a regenerative steel-pushing heating furnace according to claim 3, wherein said heat-resistant concrete heat-insulating layer is a heat-resistant concrete heat-insulating layer having a strength grade of C30 or higher.
5. The hearth structure of a regenerative steel-pushing heating furnace according to claim 3 or 4, wherein said heat-resistant concrete heat-insulating layer is made of plain concrete or reinforced concrete.
6. The hearth structure of a regenerative steel-pushing heating furnace according to claim 3 or 4, wherein said heat-resistant concrete heat-insulating layer is a heat-resistant concrete heat-insulating layer having a heat-resistant temperature of 1200 ℃.
7. The bottom structure of a regenerative steel-pushing heating furnace according to claim 2, wherein the second thermal insulation layer is a blast furnace slag thermal insulation layer.
8. The bottom structure of a regenerative steel-pushing heating furnace according to claim 7, wherein said thermal insulation layer of the blast furnace slag is made of a material having a density of 500kg/m or less3The blast furnace granulated slag thermal insulation layer is made of the blast furnace granulated slag.
9. The bottom structure of a regenerative steel-pushing heating furnace according to claim 8, wherein the thermal insulation layer of the blast furnace slag is a thermal insulation layer of the blast furnace slag having a heat resistance temperature of 900 ℃.
10. The hearth structure of a regenerative push steel heating furnace according to claim 1, wherein said refractory insulating layer is a refractory insulating layer constructed of refractory bricks, and said support structure is a heat-resistant reinforced concrete support structure made of reinforced concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922101668.6U CN211373215U (en) | 2019-11-28 | 2019-11-28 | Heat accumulating type steel pushing heating furnace bottom structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849147A (en) * | 2019-11-28 | 2020-02-28 | 中冶京诚工程技术有限公司 | Heat accumulating type steel pushing heating furnace bottom structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849147A (en) * | 2019-11-28 | 2020-02-28 | 中冶京诚工程技术有限公司 | Heat accumulating type steel pushing heating furnace bottom structure |
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