Non-metal supporting device for hot blast stove checker brick masonry
阅读说明：本技术 一种热风炉格子砖砌体用非金属支撑装置 (Non-metal supporting device for hot blast stove checker brick masonry ) 是由 徐潇晗 李�东 吴敏 王秀伟 何汝生 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种热风炉格子砖砌体用非金属支撑装置,包括非金属箅子板、非金属支柱及安装附件,非金属箅子板支撑在非金属支柱顶部,非金属支柱通过安装附件固定、支撑在热风炉炉底板或热风炉基础上；非金属箅子板由位于热风炉平面中部的中部箅板与围绕中部箅板的周边箅板组成,中部箅板、周边箅板由至少一根非金属支柱支撑。本发明具有大于1200℃的长期安全使用温度,能够实现热风炉生产操作中采用大于800℃的燃烧废气温度,利用这种高温废气的余热可将助燃空气的温度加热至600℃以上、煤气温度加热至300℃以上,降低热风炉系统的燃料消耗、降低碳排放,并且避免了金属质炉箅子、炉箅子支柱的氧化腐蚀、重量大、投资高等缺陷。(The invention discloses a non-metal supporting device for a checker brick masonry of a hot-blast stove, which comprises a non-metal grate plate, a non-metal supporting column and an installation accessory, wherein the non-metal grate plate is supported at the top of the non-metal supporting column, and the non-metal supporting column is fixed and supported on a bottom plate of the hot-blast stove or a foundation of the hot-blast stove through the installation accessory; the non-metal grate plate consists of a middle grate plate positioned in the middle of the plane of the hot-blast stove and a peripheral grate plate surrounding the middle grate plate, and the middle grate plate and the peripheral grate plate are supported by at least one non-metal pillar. The invention has the long-term safe use temperature of more than 1200 ℃, can realize the combustion exhaust gas temperature of more than 800 ℃ adopted in the production operation of the hot blast stove, can heat the temperature of combustion air to more than 600 ℃ and the temperature of coal gas to more than 300 ℃ by utilizing the waste heat of the high-temperature exhaust gas, reduces the fuel consumption of a hot blast stove system, reduces the carbon emission, and avoids the defects of oxidation corrosion, heavy weight, high investment and the like of a metal grate and a grate support column.)
1. The utility model provides a non-metallic strutting arrangement for hot-blast furnace checker brick masonry, includes non-metal grate plate (2), non-metal pillar (1) and installation annex, its characterized in that: the nonmetal grate plate (2) is supported on the top of the nonmetal strut (1), the nonmetal strut (1) is fixed and supported on a bottom plate of a hot-blast stove or a base of the hot-blast stove through an installation accessory, and a bottom surface groove (25) matched with the section shape of the nonmetal strut (1) is arranged on the lower surface of the nonmetal grate plate (2) at the supporting position of the nonmetal strut (1);
the nonmetal grate plate (2) consists of a middle grate plate (21) positioned in the middle of the plane of the hot blast stove and peripheral grate plates (22) surrounding the middle grate plate (21), and the plane projection shape of the middle grate plate (21) is rectangular or regular hexagon; the edge projection shape of the peripheral grate plate (22) facing the outside of the furnace is arc-shaped or polygonal, and the plane projection shape of the rest edges is matched with the edge shapes of the adjacent middle grate plate (21) and the peripheral grate plate (22); the middle grate plate (21) and the peripheral grate plate (22) are supported by at least one non-metal pillar (1).
2. The non-metallic support arrangement for a hot blast stove checker work of claim 1, wherein: the section shape of nonmetal pillar (1) outward appearance is circular or hexagon or rectangle, and the hypomere of nonmetal pillar (1) is solid cylinder, and the upper segment is hollow cylinder, and the hollow cylinder top of upper segment is equipped with back taper platform cavity (15), and back taper platform cavity (15) are the back taper platform form that the size gradually enlarges.
3. The non-metallic support arrangement for a hot blast stove checker work of claim 1, wherein: the hollow column body of the nonmetal pillar (1) is provided with a through hole (14) which is connected with the outer surface of the column body (12) and the inner cavity (13).
4. The non-metallic support arrangement for a hot blast stove checker work of claim 1, wherein: the lower extreme of nonmetal pillar (1) is equipped with metal base (11), and metal base (11) lower extreme is equipped with backing plate (3), is equipped with connecting piece (4) that are used for nonmetal pillar (1) installation on metal base (11).
5. The non-metallic support arrangement for a hot blast stove checker work of claim 1, wherein: vertical grate holes (23) matched with the lattice brick lattice holes (28) are formed in the middle grate plate (21) and the peripheral grate plate (22), the single vertical grate hole (23) is matched with the single lattice brick lattice hole (28) or the three lattice brick lattice holes (28) of the lattice bricks (5), and the cross section of the vertical grate hole (23) is circular, regular hexagon or petal-shaped.
6. The non-metallic support arrangement for a hot blast stove checker work of claim 1, wherein: the edge and the corner of the middle grate plate (21) and the peripheral grate plate (22) are provided with vertical grate grooves (24) matched with the lattice brick lattice holes (28), the single vertical grate groove (24) is matched with a single or three complete lattice brick lattice holes (28) or incomplete lattice brick lattice holes (28) of the lattice bricks (5), and the cross section of the vertical grate groove (24) is in a circular shape, a regular hexagon shape or a petal shape.
7. A non-metallic support arrangement for a checker work of a hot blast stove as claimed in claim 5 or 6, wherein: the lower surfaces of the middle grate plate (21) and the peripheral grate plate (22) are provided with vertical grate holes (23) or vertical grate grooves (24) which are shielded by the tops of the non-metal pillars (1), and air flow channels (27) communicated with the vertical grate holes (23) or the vertical grate grooves (24) which are not shielded are arranged.
8. The non-metallic support arrangement for a hot blast stove checker work of claim 1, wherein: the upper surfaces of the middle grate plate (21) and the peripheral grate plate (22) are provided with top surface grooves (26) matched with the positions and the sizes of bosses on the bottom surface of the checker brick (5).
Technical Field
The invention relates to the technical field of ironmaking blast furnace hot blast stoves, in particular to a non-metal supporting device for a checker brick masonry of a hot blast stove.
Background
The checker brick masonry in the regenerative chamber of the hot blast stove is a refractory heat exchanger for absorbing the heat of combustion flue gas and heating blast of the blast furnace, and is built by a plurality of single checker bricks, the checker brick masonry is supported by a grate at the lower part of the regenerative chamber, and the grate is supported on a grate support column below the checker brick masonry.
At present, the grate and the grate support for supporting the checker brick masonry of the hot-blast stove are all made of metal castings such as nodular cast iron, heat-resistant cast iron, high-chromium cast iron and the like. Because of the significant strength decay of these metallic materials at high temperatures, the current maximum operating temperatures of grates and grate buckstays are less than 450 ℃. The utilization of the waste heat of the combustion waste gas of the hot blast stove to improve the temperature of combustion air and coal gas is a mature modern technology, and has the comprehensive effects of improving the temperature of hot blast, reducing fuel consumption, reducing the carbon emission of the hot blast stove and the like.
However, due to the above-mentioned safety operating temperature limitations of the metallic grates and grate struts, the temperature of the hot blast stove combustion exhaust gas cannot be further increased, which affects the attainment of higher combustion air and gas temperatures, and therefore, is not conducive to further reduction of the fuel consumption of the hot blast stove and to reduction of the carbon emission of the hot blast stove system. Meanwhile, the metal grate and the grate support have the defects of oxidation corrosion, thermal fatigue, heavy weight, high investment and the like. Therefore, the non-metal supporting device for the checker work of the hot blast stove is provided.
Disclosure of Invention
The invention aims to provide a non-metal supporting device for a checker brick building body of a hot blast stove, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a nonmetal supporting device for a checker brick masonry of a hot blast stove comprises a nonmetal grate plate, a nonmetal strut and an installation accessory, wherein the nonmetal grate plate is supported at the top of the nonmetal strut, the nonmetal strut is fixed and supported on a bottom plate of the hot blast stove or a foundation of the hot blast stove through the installation accessory, and a bottom groove matched with the section shape of the nonmetal strut is arranged on the lower surface of the nonmetal grate plate at the supporting position of the nonmetal strut;
the nonmetal grate plate consists of a middle grate plate positioned in the middle of the plane of the hot-blast stove and a peripheral grate plate surrounding the middle grate plate, and the plane projection shape of the middle grate plate is rectangular or regular hexagon; the projection shape of the edge of the peripheral grate plate facing the outside of the furnace is arc-shaped or polygonal, and the plane projection shapes of the other edges are matched with the edge shapes of the adjacent middle grate plate and the peripheral grate plate; the middle grate plate and the peripheral grate plate are supported by at least one non-metal pillar.
The section shape of nonmetal pillar outward appearance is circular or hexagon or rectangle, and the hypomere of nonmetal pillar is solid cylinder, and the upper segment is hollow cylinder, and the hollow cylinder top of upper segment is equipped with back taper platform cavity, and back taper platform cavity is the back taper platform form that the size enlarges gradually.
And the hollow cylinder body of the non-metal support column is provided with a through hole connected with the outer surface and the inner cavity of the cylinder body.
The lower extreme of nonmetal pillar is equipped with metal base, and metal base lower extreme is equipped with the backing plate, is equipped with the connecting piece that is used for nonmetal pillar installation on the metal base.
Vertical grate holes matched with the lattice brick lattice holes are formed in the middle grate plate and the peripheral grate plates, the single vertical grate hole is matched with the single lattice brick lattice hole or the three lattice brick lattice holes of the lattice brick, and the cross section of each vertical grate hole is circular, regular hexagon or petal-shaped.
The edge and the corner of the middle grate plate and the peripheral grate plate are provided with vertical grate grooves matched with the lattice brick lattice holes, a single vertical grate groove is matched with a single or three complete lattice brick lattice holes or incomplete lattice brick lattice holes of the lattice bricks, and the cross section of each vertical grate groove is in a circular shape, a regular hexagon shape or a petal shape.
The vertical grate holes or vertical grate grooves which are covered by the tops of the non-metal struts on the lower surfaces of the middle grate plate and the peripheral grate plates are provided with airflow channels communicated with the uncovered vertical grate holes or vertical grate grooves.
The upper surfaces of the middle grate plate and the peripheral grate plate are provided with top surface grooves matched with the positions and the sizes of the bosses on the bottom surfaces of the lattice bricks.
The non-metal grate plate and the non-metal supporting column are made of Al2O3-SiO2Is made of refractory material.
Compared with the prior art, the invention has the beneficial effects that: the invention has the long-term safe use temperature of more than 1200 ℃, can realize the combustion exhaust gas temperature of more than 800 ℃ adopted in the production operation of the hot blast stove, can heat the temperature of combustion air to more than 600 ℃ and the temperature of coal gas to more than 300 ℃ by utilizing the waste heat of the high-temperature exhaust gas, reduces the fuel consumption of a hot blast stove system, reduces the carbon emission, and avoids the defects of oxidation corrosion, heavy weight, high investment and the like of a metal grate and a grate support column.
Drawings
FIG. 1 is a schematic plan view of example 1 of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is an enlarged view at E of FIG. 1;
FIG. 4 is an enlarged view of FIG. 2 at B;
FIG. 5 is a schematic plan view showing embodiment 2 of the present invention;
FIG. 6 is a cross-sectional view taken at B-B of FIG. 5;
FIG. 7 is an enlarged view at C of FIG. 5;
fig. 8 is an enlarged view of fig. 6 at D.
In the figure: 1. a non-metallic strut; 11. a metal base; 12. a cylinder; 13. an interior cavity; 14. a through hole; 15. a cavity of the inverted frustum; 2. a non-metallic grate plate; 21. a middle grate plate; 22. a peripheral grate plate; 23. vertical grate holes; 24. a vertical grate groove; 25. a bottom surface groove; 26. a top surface groove; 27. an air flow channel; 28. lattice brick lattice holes; 3. a base plate; 4. a connecting member; 5. checker bricks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Example 1: referring to fig. 1-4, the checker bricks 5 selected in this embodiment are seven-hole checker bricks, and each complete checker brick 5 has three bosses on the bottom surface. The invention provides a non-metal supporting device for a checker brick masonry of a hot blast stove, which comprises a non-metal grate plate 2, a non-metal supporting column 1 and mounting accessories. The nonmetal grate plate 2 is supported on the top of the nonmetal support column 1, the nonmetal support column 1 is fixed and supported on the bottom plate of the hot blast stove through an installation accessory, and a bottom groove 25 matched with the section shape of the nonmetal support column 1 is arranged on the lower surface of the nonmetal grate plate 2 at the supporting position of the nonmetal support column 1;
the nonmetal grate plate 2 consists of a middle grate plate 21 positioned in the middle of the plane of the hot-blast stove and a peripheral grate plate 22 surrounding the middle grate plate 21, and the plane projection shape of the middle grate plate 21 is rectangular; the projection shape of the edge of the peripheral grate plate 22 facing the outside of the furnace is circular arc, and the plane projection shape of the rest edges is matched with the edge shapes of the adjacent middle grate plate 21 and the peripheral grate plate 22; the middle grate plate 21 and the peripheral grate plate 22 are supported by a non-metal pillar 1.
The section shape of the outer surface of the nonmetal strut 1 is circular, the lower section is a solid cylinder, the upper section is a hollow cylinder, the top end of the hollow cylinder at the upper section is provided with an inverted frustum cavity 15, and the inverted frustum cavity 15 is in an inverted frustum shape with gradually enlarged size.
The hollow column body of the non-metal column 1 is provided with a through hole 14 connected with the outer surface of the column body 12 and the inner cavity 13.
The lower extreme of nonmetal pillar 1 is equipped with metal base 11, and metal base 11 lower extreme is equipped with backing plate 3, is equipped with connecting piece 4 that is used for nonmetal pillar 1 to install on metal base 11.
Vertical grate holes 23 matched with the seven-hole checker brick grid holes 28 are formed in the middle grate plate 21 and the peripheral grate plate 22, a single vertical grate hole 23 is matched with a single checker brick grid hole 28 of the checker brick 5, and the cross section of the vertical grate hole 23 is circular.
The edges and corners of the middle grate plate 21 and the peripheral grate plate 22 are provided with vertical grate grooves 24 matched with the lattice brick lattice holes 28, a single vertical grate groove 24 is matched with a single complete lattice brick lattice hole 28 or an incomplete lattice brick lattice hole 28 of the lattice brick 5, and the cross section of the vertical grate groove 24 is circular.
The vertical grate holes 23 on the lower surfaces of the middle grate plate 21 and the peripheral grate plate 22, which are shielded by the tops of the non-metal struts 1, are provided with air flow channels 27 communicated with the vertical grate holes 23 which are not shielded.
The upper surfaces of the middle grate plate 21 and the peripheral grate plate 22 are provided with top surface grooves 26 matched with the positions and the sizes of bosses on the bottom surface of the checker brick 5.
The non-metal grating plate 2 and the non-metal pillar 1 are made of Al2O3-SiO2Is made of refractory material.
Example 2: referring to fig. 5-8, the checker brick 5 selected in this embodiment is a nineteen-hole checker brick, with three bosses on the bottom surface of each complete checker brick 5. The invention provides a non-metal supporting device for a checker brick masonry of a hot blast stove, which comprises a non-metal grate plate 2, a non-metal pillar 1 and mounting accessories. The nonmetal grate plate 2 is supported on the top of the nonmetal support column 1, the nonmetal support column 1 is fixed and supported on the bottom plate of the hot blast stove through an installation accessory, and a bottom groove 25 matched with the section shape of the nonmetal support column 1 is arranged on the lower surface of the nonmetal grate plate 2 at the supporting position of the nonmetal support column 1;
the nonmetal grate plate 2 consists of a middle grate plate 21 positioned in the middle of the plane of the hot-blast stove and a peripheral grate plate 22 surrounding the middle grate plate 21, and the plane projection shape of the middle grate plate 21 is a regular hexagon; the projection shape of the edge of the peripheral grate plate 22 facing the outside of the furnace is circular arc, and the plane projection shape of the rest edges is matched with the edge shapes of the adjacent middle grate plate 21 and the peripheral grate plate 22; the middle grate plate 21 and the peripheral grate plate 22 are supported by a non-metal pillar 1.
The apparent section shape of nonmetal pillar 1 is circular or hexagon or rectangle, and the hypomere of nonmetal pillar 1 is solid cylinder, and the upper segment is hollow cylinder, and the hollow cylinder top of upper segment is equipped with back frustum cavity 15, and back frustum cavity 15 is the back frustum form that the size enlarges gradually.
The hollow column body of the non-metal column 1 is provided with a through hole 14 connected with the outer surface of the column body 12 and the inner cavity 13.
The lower extreme of nonmetal pillar 1 is equipped with metal base 11, and metal base 11 lower extreme is equipped with backing plate 3, is equipped with connecting piece 4 that is used for nonmetal pillar 1 to install on metal base 11.
Vertical grate holes 23 matched with the lattice brick lattice holes 28 are formed in the middle grate plate 21 and the peripheral grate plate 22, a single vertical grate hole 23 is matched with the three lattice brick lattice holes 28 of the lattice bricks 5, and the vertical grate holes 23 are circular.
The edges and corners of the middle grate plate 21 and the peripheral grate plate 22 are provided with vertical grate grooves 24 matched with the lattice brick lattice holes 28, the single vertical grate groove 24 is matched with one or three complete lattice brick lattice holes 28 or incomplete lattice brick lattice holes 28 of the lattice bricks 5, and the cross section of the vertical grate groove 24 is circular.
The vertical grate holes 23 on the lower surfaces of the middle grate plate 21 and the peripheral grate plate 22, which are shielded by the tops of the non-metal struts 1, are provided with air flow channels 27 communicated with the vertical grate holes 23 which are not shielded.
The upper surfaces of the middle grate plate 21 and the peripheral grate plate 22 are provided with top surface grooves 26 matched with the positions and the sizes of bosses on the bottom surfaces of the lattice bricks 5.
The non-metal grate plate and the non-metal strut 1 are made of Al2O3-SiO2Is made of refractory material.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.