CN211451388U - Vault structure of hot blast stove - Google Patents

Vault structure of hot blast stove Download PDF

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Publication number
CN211451388U
CN211451388U CN201922049544.8U CN201922049544U CN211451388U CN 211451388 U CN211451388 U CN 211451388U CN 201922049544 U CN201922049544 U CN 201922049544U CN 211451388 U CN211451388 U CN 211451388U
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China
Prior art keywords
wall
fire
arc
vault
transverse
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CN201922049544.8U
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Chinese (zh)
Inventor
姜建荣
吴小雪
黄斌
柴荣才
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Zhejiang Mebo Industrial Technology Co ltd
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Zhejiang Mebo Industrial Technology Co ltd
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Abstract

The utility model provides a hot-blast furnace vault structure, including the arc footstock, the span of arc footstock is less than the distance between two relative side walls of hot-blast furnace, connects through a plurality of interconnect's perpendicular wall and horizontal wall between hunch foot and the corresponding side wall. The fire outlet of the combustion chamber is provided with a fire-blocking wall, and the top of the fire-blocking wall is connected with a vertical wall or a horizontal wall in a masonry mode. The structure reduces the span of the arc-shaped top seat and enhances the stability. And the vault and the below are connected with the fire wall in a masonry mode, part of vault load is shared on the fire wall, the vault is more stable, the fire wall is not an isolated structure any more, deformation stress can be transmitted, and the service life is prolonged.

Description

Vault structure of hot blast stove
Technical Field
The utility model relates to a heat energy equipment makes technical field, concretely relates to hot-blast furnace vault structure that stability is good, long service life.
Background
Hot blast stoves provide thermal power and have become an alternative product to electric and traditional steam powered heat sources in many industries. The hot blast stove comprises a combustion chamber, a high-temperature purification chamber, a heat exchanger and a tail gas treatment device. The vault of the hot blast stove is a masonry structure for connecting a combustion chamber and a high-temperature purification chamber, the vault structure of the hot blast stove in the prior art has a hemispherical shape, a conical shape, a parabolic shape and a catenary shape, and the prior domestic traditional internal combustion type hot blast stove generally adopts the hemispherical shape. Because the vault is in a high-temperature environment for a long time, the vault is lined with refractory bricks, and the exterior of the vault is covered with insulating bricks, in order to reduce the structural quality and improve the stability of the vault, the diameter of the vault is reduced as much as possible, the vault load is pressed on the side wall of the hot blast stove through the positive pressure of the arch foot, and the side wall supporting the vault is stressed greatly and is easy to damage.
A fire barrier is arranged between the fire outlet of the combustion chamber and the inlet of the high-temperature purification chamber, is a wall for preventing flame from directly entering the high-temperature purification chamber in a heat source and is built by refractory materials. The high-temperature air flow enters the high-temperature purification chamber from a channel between the fire-blocking wall and the vault, and the fire-blocking wall needs to be arranged according to the structure of the vault at the upper part, so that the wall body is high and is in an isolated state. In the actual production process, because the hot air flow is continuously washed and the two sides of the wall body are heated unevenly when the temperature is adjusted, so that the thermal expansion is inconsistent, the refractory material on the wall body is loosened and falls off or the wall body is inclined, and the wall body can collapse quickly. To solve this problem, patent document No. CN 204043366U sets a triangular bracket on the side of the fire wall near the fire hole.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a hot blast stove vault structure with high stability and good heat storage.
The technical scheme of the utility model is that: a vault structure of a hot blast stove comprises an arc-shaped top seat. The distance between the arch springing of arc footstock both sides is the span, is less than the distance between two relative side walls of hot-blast furnace, builds the connection through building by laying bricks or stones through a plurality of vertical walls and horizontal wall of interconnect between arch springing and the corresponding side wall. The fire outlet of the combustion chamber is provided with a fire-blocking wall, and the top of the fire-blocking wall is connected with a vertical wall or a horizontal wall in a masonry mode. The transverse wall and the vertical wall which are sequentially connected in a masonry mode are of a step-shaped structure to build the side wall of the hot blast stove and the arch foot of the upper arc-shaped top seat into a whole, the transverse wall and the vertical wall are arranged to reduce the span of the arc-shaped top seat, and the arc-shaped top seat is more stable. The transverse wall and the vertical wall of the connecting part are supported on the fire-blocking wall below and are also stable. Meanwhile, the fire wall is not an isolated wall body, stress generated by stress and deformation can be transmitted, and the service life is prolonged.
More specifically, the arch springing is directly connected with a vertical wall in a masonry mode, the side wall is directly connected with a transverse wall in a masonry mode, and the fire-blocking wall is connected with the uppermost transverse wall in a masonry mode. The structure can reduce the span of the arc-shaped top seat and the height of the wind-break wall on the premise of ensuring the reasonable wind speed in the furnace, and the stability of the wind-break wall is enhanced by reducing the height of the wind-break wall.
More specifically, the transverse wall is of an arc structure with the extending direction being the same as that of the arc top seat, the lower ends of the transverse wall and the vertical wall are both supported on the cross beam, the bearing capacity of the arc structure is high, and air flow in the hot blast stove is smooth.
More specifically, the arc top seat, the vertical wall and the transverse wall are all provided with heat preservation layers, and the linings are all made of refractory bricks. And the vertical wall and the transverse wall are both double-layer wall structures.
The utility model discloses a vault structure sets up a plurality of vertical walls and horizontal wall between hot-blast furnace wall body and arc footstock and builds connection structure by laying bricks or stones, and the horizontal wall of building bricks or stones the connection each other is the multiple ring echelonment with erecting the wall. The structure reduces the span of the arc-shaped top seat and enhances the stability. And the vault and the below are connected with the fire wall in a masonry mode, part of vault load is shared on the fire wall, the vault is more stable, the fire wall is not an isolated structure any more, deformation stress can be transmitted, and the service life is prolonged.
Drawings
FIG. 1: the structure of the utility model is shown schematically;
in the figure: 1-arc top seat; 2-vertical walls; 3-transverse wall; 4-a fire wall; 5-insulating layer; 6-beam.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the following description of the present invention with reference to the accompanying drawings is further provided, but not limited in any way, and all the modifications or improvements made based on the teaching of the present invention belong to the protection scope of the present invention.
Example one
As shown in figure 1, the vault of the hot blast stove comprises an arc-shaped top seat 1, and the arc-shaped top seat 1 is an inner layer masonry high-temperature resistant silica brick. And an outer layer is built with heat-insulating clay bricks, water slag diatomite fillers cover the heat-insulating clay bricks, and the heat-insulating clay bricks and the water slag diatomite fillers form a heat-insulating layer 5. The arch foot of arc footstock 1 both sides supports respectively on a vertical wall 2, and both build by laying bricks or stones the connection, and vertical wall 2 builds by laying bricks or stones the connection with a horizontal wall 3, and horizontal wall 3 is the horizontally wall body, and vertical wall 2 is vertical wall body. Therefore, the vertical wall 2 and the transverse wall 3 are sequentially connected, and finally the third transverse wall 3 is connected with the side wall of the hot blast stove in a masonry mode to form a three-ring arch top structure. Wherein the lower ends of the transverse wall 3 and the vertical wall 2 are supported on the cross beam 6, and the cross beam 6 is of a steel structure.
The transverse wall 3 and the vertical wall 2 are the same as the arc-shaped top seat, heat-insulating clay bricks are built outside the transverse wall and the vertical wall, water slag diatomite fillers cover the outside of the heat-insulating clay bricks, and the transverse wall and the vertical wall form a heat-insulating layer 5. The interior is a double-layer wall structure, and the double layers are made of high-temperature-resistant silicon bricks, so that the heat insulation effect is good.
The fire-blocking wall 4 is arranged at the fire outlet of the combustion chamber in the furnace body, and the top wall body of the fire-blocking wall 4 and the uppermost transverse wall 3 are connected into a whole through large-plate bricks. The distance between the upper end of the fire-blocking wall 4 and the arc-shaped top seat 1 is a main channel for hot air flow, but the effect of blocking flame is influenced by too low height of the fire-blocking wall 4, and the effects of blocking flame and smoothly flowing hot air can be achieved by only designing the span of the arc-shaped top seat 1 and the height of the vertical wall 2 directly connected with the arc-shaped top seat according to actual conditions.
Example two
In this embodiment, the fire-blocking wall 4 and the second vertical wall 2 at the top are built into a whole through large bricks, the first horizontal wall 3 at the top is an arc-shaped structure with the same extending direction as the arc-shaped top seat 1, the supporting force of the arc-shaped structure is good, and the airflow circulation is smoother, and the rest of the embodiment is the same as that of the embodiment I.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (7)

1. The utility model provides a hot-blast furnace vault structure, includes arc footstock (1), its characterized in that: the span of the arc-shaped top seat (1) is smaller than the distance between two opposite side walls of the hot blast stove, and the arch springing and the corresponding side walls are connected through a plurality of vertical walls (2) and transverse walls (3) which are connected with each other; the fire-blocking wall (4) is arranged at the fire outlet of the combustion chamber in the hot blast stove, and the top of the fire-blocking wall (4) is connected with the vertical wall (2) or the transverse wall (3) in a masonry mode.
2. A stove dome structure according to claim 1, characterised in that: the arch foot of arc footstock (1) and one erect wall (2) and directly build by laying bricks or stones the connection, the side wall with one horizontal wall (3) are directly built by laying bricks or stones the connection, keep off fire wall (4) and the horizontal wall (3) of telling of the top build by laying bricks or stones the connection.
3. A stove dome structure according to claim 1, characterised in that: the transverse wall (3) is of an arc structure with the same extension direction as the arc top seat (1).
4. A stove dome structure according to claim 1, characterised in that: the lower ends of the transverse wall (3) and the vertical wall (2) are supported on the cross beam (6).
5. A stove dome structure according to any one of claims 1-4, characterized in that: the arc top seat (1), the vertical wall (2) and the transverse wall (3) are all externally provided with heat insulation layers (5).
6. A stove dome structure according to claim 5, characterised in that: the liners of the arc top seat (1), the vertical wall (2) and the transverse wall (3) are all made of refractory bricks.
7. A stove dome structure according to claim 6, characterised in that: the vertical wall (2) and the transverse wall (3) are both of double-layer wall structures.
CN201922049544.8U 2019-11-23 2019-11-23 Vault structure of hot blast stove Active CN211451388U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922049544.8U CN211451388U (en) 2019-11-23 2019-11-23 Vault structure of hot blast stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922049544.8U CN211451388U (en) 2019-11-23 2019-11-23 Vault structure of hot blast stove

Publications (1)

Publication Number Publication Date
CN211451388U true CN211451388U (en) 2020-09-08

Family

ID=72300590

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922049544.8U Active CN211451388U (en) 2019-11-23 2019-11-23 Vault structure of hot blast stove

Country Status (1)

Country Link
CN (1) CN211451388U (en)

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