CN201318798Y

CN201318798Y - Novel perforated checker brick

Info

Publication number: CN201318798Y
Application number: CNU2008202213500U
Authority: CN
Inventors: 刘世聚; 陈维汉; 黄丙乾; 刘力铭
Original assignee: HENAN YUXING HOT BLAST STOVE ENGINEERING TECHNOLOGY Co Ltd
Current assignee: HENAN YUXING HOT BLAST STOVE ENGINEERING TECHNOLOGY Co Ltd
Priority date: 2008-11-27
Filing date: 2008-11-27
Publication date: 2009-09-30
Anticipated expiration: 2018-11-27

Abstract

The utility model relates to a novel perforated checker brick, which can effectively resolve problems of poor heat-exchange capacity of heat retainers, nonuniform airflow distribution and accumulation of gas dust in checker holes. The technical scheme includes that the novel perforated checker brick comprises an equilaterally polygonal brick body which is vertically distributed with vertical through holes, each vertical through hole is composed of an isometric segment and a reducing segment, the outer port of the reducing segment and an oblique large aperture connected with the brick body form a flared passage, and the outer bottom surface of the isometric segment is provided with a parallel and horizontal passage which is communicated with the outer port of the isometric segment. Dust blocking can be eliminated because platforms formed by dislocation of checker holes are removed after the novel perforated checker bricks are stacked, flow field characteristics of continuous shrinking and diffusion in check holes strengthen heat transmission process, and then airflow distribution is enabled to be uniform by utilizing the horizontal passage and characteristics of airflow in holes. The utility model not only can effectively resolve the problems of poor heat-exchange capacity of heat retainers, non-uniform airflow distribution in a regenerating chamber and the like, but also has fine economic and social benefits in application.

Description

Novel porous checker brick

One, technical field

The utility model relates to a kind of novel porous checker brick of regulating the air-flow distribution that blast funnace hot blast stove is used.

Two, background technology

Checker brick are important accumulation of heat, heat transfer carriers of hot-blast stove, the thermal capacity of checker brick, the power of heat-exchange capacity are the key of hot-blast stove to the high hot blast temperature of the stable conveying of blast furnace, have only best heat-exchange capacity and best thermal capacity could effectively improve the result of use of checker brick.The checker brick that generally adopt have the seven apertures in the human head checker brick at present, and 19 hole checker brick etc., their checkerwork cell all are to adopt the equally spaced structure of equal diameter, and the air-flow exchange that this both had been unfavorable between checkerwork cell also is unfavorable for improving the exchange heat between air-flow and checkerwork cell.Therefore, be necessary that the structure of improving checker brick improves air-flow exchange capacity between checkerwork cell so that whole air-flow distribution is tending towards even in the regenerator, and pass through to change the heat-exchange capacity of the shape of checkerwork cell with the enhancing checkerwork cell, and the adhesion that reduces dust in the air-flow to a certain extent, result of use guaranteed.

Three, utility model content

At above-mentioned situation and actual needs, the purpose of this utility model is to provide a kind of novel porous checker brick, the problem of can solve effectively that the heat storage heat-exchange capacity is poor, air-flow skewness, gas dust being piled up in checkerwork cell.

The technical scheme that the utility model solves is: include how equilateral brick body, the brick body vertically is evenly equipped with vertical through holes, said vertical through holes is to be made of equal diameter section and change diameter segment, become the oblique large aperture that links to each other on diameter segment collar extension and the brick body and constitute horn-like passage, the parallel, horizontal passage that is connected with equal diameter section collar extension is arranged on the outer bottom of equal diameter section.

The utility model checker brick have been eliminated the platform of checkerwork cell dislocation formation and have been eliminated the dust obstruction after stacking, constantly shrink with the Field Characteristics of diffusion in the checkerwork cell and strengthened diabatic process, utilize the feature of air-flow in horizontal channel and the hole, impelled the even distribution of air-flow.The utility model can effectively solve problems such as the heat storage heat-exchange capacity is poor, regenerator air-flow skewness, and its application has good economic benefit and social benefit.

Four, description of drawings

Fig. 1 is a vertical view of the present utility model.

Fig. 2 be among Fig. 1 of the present utility model A-A to the cross section front view.

Fig. 3 is that the dress between the utility model checker brick is built state diagram.

Five, the specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is done nearly detailed explanation of a step.

As seen from Figure 1, Figure 2, the utility model includes how equilateral brick body 5, brick body 5 vertically is evenly equipped with vertical through holes, said vertical through holes is by equal diameter section (straight hole section) 2 and becomes diameter segment (taper hole section) 4 formations, become the horn-like passage of oblique large aperture 3 formations that links to each other on diameter segment collar extension and the brick body, the parallel, horizontal passage 1 that is connected with equal diameter section collar extension is arranged on the outer bottom of equal diameter section.

In order to guarantee result of use, said brick body 5 is for waiting hexagon, and how many parallel, horizontal passages that equal diameter section 2 collar extensions link to each other is decided by the checker brick hole, provides 19 hole checker brick among Fig. 1, and its horizontal channel has parallel 5.

The utility model can be porous checker brick such as seven apertures in the human head, 19 holes or 30 seven apertures in the human heads.

The method of piling up of the present utility model is on an aspect, and horizontal channel on checker brick and the horizontal channel on another piece checker brick join (as shown in Figure 3), so that the flowing of the horizontal direction of air-flow.Being up and down that the small-bore connects the large aperture between the checker brick, its objective is and realize that the checkerwork cell alteration of form brings the improvement of lattice brick performance.

By as can be seen above-mentioned, when flue gas stream enters the heat storage of being made up of checker brick from the combustion chamber, air-flow speeds up at place, checker brick small-bore, when entering oblique wide-aperture cross section, constitute a kind of air-flow jet flow state that is similar to, can swabbing action be arranged to the air-flow in its horizontal channel, this just can impel the air-flow distribution in the heat storage to be tending towards even.Simultaneously, at the heat storage lower area, the horizontal channel makes the flue gas stream that flows down from above cause air turbulence in the checkerwork cell in flow process, has strengthened the exchange capability of heat between checkerwork cell and air-flow like this.After cold air inlet feeds, from bottom to top, after cold wind enters from equal diameter section small-bore, speed reduces gradually, and cold wind flows out from oblique large aperture when entering equal diameter section small-bore once more, and mobile resistance increases, and can force air-flow to flow to the horizontal channel like this, can make so also that air-flow is tending towards evenly in the regenerator, disorderly simultaneously air-flow also can increase the heat exchange between hole wall and air-flow.In addition, enter from oblique large aperture when flue gas flows, flow velocity increases, and the dust that sticks in the checkerwork cell is had rolling action, is easy to the dust that sticks in the checkerwork cell is taken away; When checker brick are stacked simultaneously is that the small-bore is placed on the large aperture, can effectively prevent the horizontal bench (being commonly called as faulting of slab ends) that the checkerwork cell dislocation occurs in the stacking of lattice brick, fundamentally eliminated the dust that carries in the coal gas and in checkerwork cell, piled up, caused heat-transfer capability to descend so that stop up checkerwork cell.

That is to say when high-temperature flue gas stream when the combustion chamber enters heat storage, air-flow enters into checker brick equal diameter section 2 places and speeds up from oblique large aperture 3, when entering the cross section of oblique large aperture 3, constitute a kind of air-flow jet flow state that is similar to, can swabbing action be arranged to the air-flow in its horizontal channel, this just can impel the air-flow distribution in the heat storage to be tending towards even.Cold wind is when equal diameter section small-bore is blown in addition, and when entering horn shape through hole (awl section), flow velocity diminishes; When oblique large aperture entered equal diameter section small-bore once more, flow resistance increased again, can impel the flowing of horizontal direction of air-flow again, made the air-flow of regenerator be tending towards even so again.So this high performance burner structure is the new structure that the bidirectional modulation air-flow distributes.Be the heat-exchange capacity that strengthens checkerwork cell by the shape that changes checkerwork cell, reduce the adhesion of dust in the air-flow simultaneously again and stick to degree on the hole wall.Effectively guaranteed the result of use of checker brick, improved the result of use and the production efficiency of hot-blast stove, its application has good economic and social benefit.

Claims

1, a kind of novel porous checker brick, include how equilateral brick body (5), brick body (5) vertically is evenly equipped with vertical through holes, it is characterized in that, said vertical through holes is by equal diameter section (2) and becomes diameter segment (4) formation, become the oblique large aperture (3) that links to each other on diameter segment collar extension and the brick body and constitute horn-like passage, the parallel, horizontal passage (1) that is connected with equal diameter section collar extension is arranged on the outer bottom of equal diameter section.

2, novel porous checker brick according to claim 1 is characterized in that, said vertical through holes is seven apertures in the human head or 19 holes or 30 seven apertures in the human heads.

3, novel porous checker brick according to claim 1 is characterized in that, said brick body (5) is to wait hexagon.

4, novel porous checker brick according to claim 1 is characterized in that, said vertical through holes is 19 holes, and said parallel, horizontal passage (1) is parallel 5.