CN214361488U

CN214361488U - Foundation structure of top combustion type hot blast stove

Info

Publication number: CN214361488U
Application number: CN202120023747.4U
Authority: CN
Inventors: 刘轶群; 江世哲; 李勇; 荣哲; 邱井林
Original assignee: MCC Capital Engineering and Research Incorporation Ltd
Current assignee: MCC Capital Engineering and Research Incorporation Ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-10-08
Anticipated expiration: 2031-01-06

Abstract

The utility model provides a foundation structure of top combustion formula hot-blast furnace relates to metallurgical machinery equipment field, this foundation structure includes reinforced concrete ring beam and reinforced concrete slab, reinforced concrete ring beam is the annular and has the holding chamber that the axial link up, reinforced concrete slab sets up the axial setting in holding intracavity and reinforced concrete slab's face perpendicular to holding chamber, reinforced concrete slab's outer fringe and reinforced concrete ring beam's inner wall are through whole casting fixed connection, a reinforced concrete slab's face is the bearing surface, reinforced concrete ring beam's both ends protrusion in reinforced concrete slab. The utility model provides a foundation structure of top combustion formula hot-blast furnace, the atress form is reasonable, can enough satisfy the support of top combustion formula hot-blast furnace, can reduce the material quantity of reinforcing bar and concrete again.

Description

Foundation structure of top combustion type hot blast stove

Technical Field

The utility model relates to the field of metallurgical mechanical equipment, in particular to a foundation structure of a top combustion type hot blast stove.

Background

The hot blast stove is a regenerative heat exchanger, which comprises a combustion chamber and a heat transfer chamber. The coal gas is combusted in the combustion chamber, the checker bricks are heated by high-temperature flue gas through the regenerator, and then cold air is introduced into the checker bricks and heated to form hot air which is used for continuously supplying air to the blast furnace. The top combustion hot blast stove is a hot blast stove with a combustion chamber positioned at the upper part of a regenerative chamber.

Because the hot blast stove is a pressure-bearing container built with refractory materials in the metal shell, the hot blast stove can be ensured to stably and normally operate only by being arranged on a special foundation structure.

At present, the basic structure forms used for the top combustion type hot blast stove are more, most of the basic structure forms are large-block concrete basic structures, the basic structure forms are thick, the requirement of the minimum burial depth of the basic structure can be met, the structural forms and the stress forms are not reasonable enough, and the basic structure forms are easy to damage.

In view of the above, the present inventors designed a basic structure of a top combustion stove through repeated experiments according to production design experiences in this field and related fields for many years, in order to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a foundation structure of top combustion formula hot-blast furnace, the atress form is reasonable, can enough satisfy the support of top combustion formula hot-blast furnace, can reduce the material quantity of reinforcing bar and concrete again.

In order to achieve the above object, the utility model provides a foundation structure of top combustion formula hot-blast furnace, wherein, foundation structure includes reinforced concrete ring beam and reinforced concrete board, reinforced concrete ring beam is the annular and has the holding chamber that the axial link up, reinforced concrete board sets up the holding intracavity just reinforced concrete board's face perpendicular to the axial setting in holding chamber, reinforced concrete board's outer fringe with reinforced concrete ring beam's inner wall is through whole casting fixed connection, reinforced concrete board's a face is the bearing surface, reinforced concrete ring beam's both ends respectively protrusion in reinforced concrete board.

The basic structure of the top combustion hot blast stove comprises a bearing surface and a heat insulation layer arranged on the bearing surface.

The basic structure of the top-combustion hot blast stove comprises a refractory material layer, a refractory brick layer and a coarse sand layer which are arranged in sequence from bottom to top.

The basic structure of the top-fired hot blast stove as described above, wherein the refractory material layer has a thickness of 60mm, the refractory brick layer has a thickness of 75mm, and the coarse sand layer has a thickness of 25 mm.

The foundation structure of the top-combustion hot-blast stove comprises a reinforced concrete ring beam, wherein one end of the reinforced concrete ring beam, which protrudes out of the bearing surface, is a bearing end, and a secondary casting layer is arranged on the end surface of the bearing end.

The basic structure of the top-fired hot blast stove as described above, wherein the thickness of the secondary cast layer is 50 mm.

The basic structure of the top-combustion hot blast stove comprises a secondary casting layer and a top-combustion hot blast stove, wherein the secondary casting layer is a concrete secondary casting layer.

The foundation structure of the top-combustion hot-blast stove comprises a bearing end, a reinforced concrete ring beam, a plurality of anchor bolts, a secondary casting layer and a top-combustion hot-blast stove, wherein the bearing end is embedded with the anchor bolts, the anchor bolts are sequentially arranged along the circumferential direction of the reinforced concrete ring beam at intervals, and the end part of each anchor bolt protrudes out of the end surface of the bearing end and penetrates through the secondary casting layer.

The foundation structure of the top combustion hot blast stove comprises a containing cavity, a reinforced concrete slab and a top plate, wherein the containing cavity is arranged in a vertically through mode, the reinforced concrete slab is horizontally arranged, and the upper plate surface of the reinforced concrete slab is a bearing surface.

The basic structure of the top-fired hot blast stove comprises a bearing surface and a reinforced concrete ring beam, wherein the bearing surface is 160mm lower than the upper end surface of the reinforced concrete ring beam.

The utility model has the following characteristics and advantages:

the utility model provides a foundation structure of top combustion formula hot-blast furnace is formed by reinforced concrete ring beam and the whole casting of reinforced concrete slab. The reinforced concrete ring beam protrudes out of the reinforced concrete slab and is used for supporting the furnace shell, the furnace wall refractory and the foundation bolt which are parts with larger load; the reinforced concrete slab is arranged in the accommodating cavity of the reinforced concrete ring beam and used for supporting the parts with smaller load on the furnace bottom. By adopting the structure, the stress form of the foundation structure formed by combining the reinforced concrete ring beam and the reinforced concrete slab is reasonable, the support of the top combustion type hot blast stove can be met, and the material consumption of the reinforced steel bar and the concrete is reduced.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.

FIG. 1 is a schematic structural view of an embodiment of a basic structure of a top-fired hot blast stove provided by the present invention;

FIG. 2 is a schematic structural view of another embodiment of the basic structure of the top-fired hot blast stove provided by the present invention;

FIG. 3 is a top view of the basic structure of the middle top combustion stove of the present invention;

FIG. 4 is a partial enlarged view of the thermally insulating layer of the present invention;

fig. 5 is a partial enlarged view of the secondary cast layer of the present invention.

Description of reference numerals:

100. a base structure; 10. A reinforced concrete ring beam;

11. an accommodating cavity; 12. A load bearing end;

20. a reinforced concrete slab; 21. A bearing surface;

30. a thermal insulation layer; 31. Sealing a refractory material layer;

32. layering the refractory bricks; 33. Layering coarse sand;

40. secondary casting layer; 50. And (7) anchor bolts.

50. And (7) anchor bolts.

Detailed Description

The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of explanation only, and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may be present.

As shown in fig. 1 to 5, the utility model provides a foundation structure 100 of top combustion formula hot-blast furnace includes reinforced concrete ring beam 10 and reinforced concrete board 20, reinforced concrete ring beam 10 is the annular and has the holding chamber 11 that the axial link up, reinforced concrete board 20 sets up in holding chamber 11 and the axial setting of perpendicular to holding chamber 11, reinforced concrete board 20's outer fringe and reinforced concrete ring beam 10's inner wall are through whole casting fixed connection, a reinforced concrete board 20's a face is bearing surface 21, reinforced concrete ring beam 10's both ends bulge respectively in reinforced concrete board 20.

The utility model provides a foundation structure 100 of top combustion formula hot-blast furnace is formed by reinforced concrete ring beam 10 and the whole casting of reinforced concrete slab 20. The reinforced concrete ring beam 10 protrudes out of the reinforced concrete slab 20 and is used for supporting the furnace shell, the furnace wall refractory and the foundation bolt which are parts with larger load; the reinforced concrete plate 20 is arranged in the accommodating cavity 11 of the reinforced concrete ring beam 10 and is used for supporting the parts with smaller load of the furnace bottom. By adopting the structure, the stress form of the foundation structure formed by combining the reinforced concrete ring beam 10 and the reinforced concrete slab 20 is reasonable, the support of the top combustion type hot blast stove can be met, and the material consumption of the reinforced steel bar and the concrete is reduced.

In an alternative embodiment of the present invention, the bearing surface 21 is provided with a heat insulation layer 30. With the above arrangement, the insulating layer 30 is located between the hearth and the bearing surface 21 for insulating to reduce the temperature from the hearth of the top-fired stove to the bearing surface 21.

In an alternative example of this embodiment, the insulation layer 30 includes a refractory material layer 31, a refractory brick layer 32, and a coarse sand layer 33 arranged in this order from the bottom up.

Preferably, the refractory layer 31 has a thickness of 60mm, the refractory layer 32 has a thickness of 75mm, and the coarse sand layer 33 has a thickness of 25 mm.

In an alternative example, the refractory material layer 31 is made of a refractory material by spraying, the refractory brick layer is made of stacked refractory bricks, the coarse sand layer 33 is made of coarse sand concrete, and the refractory material, the refractory bricks and the coarse sand concrete can be selected from the prior art, which will not be described herein.

In an optional embodiment of the present invention, the end of the reinforced concrete ring beam 10 protruding from the bearing surface 21 is a bearing end 12, and a secondary casting layer 40 is disposed on the end surface of the bearing end 12. The secondary casting layer 40 is used for adjusting the distance between the furnace shell base and the top surface of the foundation, so that the installation of the furnace shell base is facilitated.

Preferably, the secondary cast layer 40 has a thickness of 50 mm.

In an alternative example of this embodiment, the secondary cast layer 40 is a concrete secondary cast layer. Preferably, the concrete secondary casting layer is a C35 fine-stone concrete secondary casting layer.

In an alternative example of this embodiment, a plurality of anchor bolts 50 are embedded in the load-bearing end 12, the anchor bolts 50 are sequentially spaced along the circumferential direction of the reinforced concrete ring beam 10, and the end portions of the anchor bolts 50 penetrate through the secondary casting layer 40. The anchor bolts 50 are used to connect the foundation structure 100 with the shell of the top-fired hot blast stove.

The utility model discloses an optional embodiment, the setting has a perfect understanding from top to bottom in holding chamber 11, and reinforced concrete slab 20 level sets up, and reinforced concrete slab 20's last face and lower face are the horizontal plane, and reinforced concrete slab 20's last face is bearing surface 21.

In an alternative example of this embodiment, the bearing surface 21 of the reinforced concrete slab 20 is 160mm lower than the upper end surface (end surface of the bearing end) of the reinforced concrete ring beam 10.

In an alternative example, the lower slab surface of the reinforced concrete slab 20 is higher than the lower end surface of the reinforced concrete ring beam 10 to further reduce the amount of reinforced concrete of the foundation structure 100.

In the following description of the embodiments, the invention is described in detail, but the description is not to be construed as limiting the invention for any reason, and in particular, the features described in the different embodiments may be combined with each other as desired, thereby forming other embodiments, and the features are understood to be applicable to any one embodiment and not limited to the described embodiments unless explicitly described to the contrary.

Claims

1. The foundation structure of the top combustion type hot blast stove is characterized by comprising a reinforced concrete ring beam and a reinforced concrete plate, wherein the reinforced concrete ring beam is annular and is provided with an axially through accommodating cavity, the reinforced concrete plate is arranged in the accommodating cavity, the surface of the reinforced concrete plate is perpendicular to the axial direction of the accommodating cavity, the outer edge of the reinforced concrete plate is fixedly connected with the inner wall of the reinforced concrete ring beam through integral casting, one surface of the reinforced concrete plate is a bearing surface, and two ends of the reinforced concrete ring beam respectively protrude out of the reinforced concrete plate.

2. The base structure of a top-fired hot blast stove according to claim 1, characterized in that the load bearing surface is provided with a thermally insulating layer.

3. The infrastructure of a top-fired stove according to claim 2, characterised in that the insulation layer comprises a refractory layer, a refractory brick layer and a grit layer in a bottom-up order.

4. The base structure of a top-firing stove according to claim 3, characterised in that the refractory layer is 60mm thick, the refractory brick layer is 75mm thick and the grit layer is 25mm thick.

5. The substructure of a top-fired hot blast stove according to claim 1, wherein the end of the reinforced concrete ring beam protruding from the bearing surface is a bearing end, and a secondary casting layer is provided on the end surface of the bearing end.

6. The base structure of a top-fired stove according to claim 5, characterised in that the secondary cast layer has a thickness of 50 mm.

7. The base structure of a top-fired stove according to claim 5, characterised in that the secondary cast layer is a concrete secondary cast layer.

8. The foundation structure of a top-fired hot blast stove according to claim 5, wherein a plurality of anchor bolts are embedded in the bearing end, the anchor bolts are sequentially arranged at intervals along the circumferential direction of the reinforced concrete ring beam, and the end of each anchor bolt protrudes from the end surface of the bearing end and penetrates through the secondary casting layer.

9. The substructure of a top-combustion hot-blast stove according to claim 1, wherein said receiving cavity is arranged to be vertically through, said reinforced concrete slab is horizontally arranged, and an upper surface of said reinforced concrete slab is a bearing surface.

10. The base structure of a top combustion stove according to claim 9, characterized in that the load bearing surface is 160mm below the upper end surface of the reinforced concrete ring beam.