CN203096105U - Top-combustion-type airheater with function of uniformly distributed smoke - Google Patents
Top-combustion-type airheater with function of uniformly distributed smoke Download PDFInfo
- Publication number
- CN203096105U CN203096105U CN 201320111245 CN201320111245U CN203096105U CN 203096105 U CN203096105 U CN 203096105U CN 201320111245 CN201320111245 CN 201320111245 CN 201320111245 U CN201320111245 U CN 201320111245U CN 203096105 U CN203096105 U CN 203096105U
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- CN
- China
- Prior art keywords
- distribution
- air flow
- airheater
- regenerator
- combustion
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Abstract
The utility model discloses a top-combustion-type airheater with a function of uniformly distributed smoke. The airheater comprises a swirling burner on the upper part of the airheater, an arch crown combustion chamber on the middle part of the airheater, and a heat storage chamber on the lower part of the airheater. The airheater is characterized in that the top part of the heat storage chamber is provided with an airflow distribution cap which is in stepped concave-convex shape and composed of a plurality of horizontal sections and slope sections, and the amount, the size and the angle parameters of the horizontal sections and the slope sections can be adjusted by changing the building mode of checker bricks so as to change the shape of the distribution cap. Due to the structure, the distribution situations of the smoke and the airflow can be effectively improved, the structure is simple, the realization is easy, and the effect of the top-combustion-type airheater is obviously superior to a traditional heat storage chamber of a flat-roofed top-combustion-type airheater.
Description
Technical field
The utility model relates to hotblast stove in a kind of Iron And Steel Industry blast furnace iron-making process.
Background technology
Present top combustion stove widespread usage turbulent burner 1, vault combustion chamber 2 and traditional flat-head type regenerator 3.Because the effect of turbulent burner 1, can cause flue gas flow 2 to distribute that to present central speed lower, all around the higher distribution form of speed in the vault combustion chamber.This air-flow distribution can cause following several problem:
1, flue gas flow velocity distribution when entering traditional flat-head type regenerator 3 still presents the form of " center is low, high " all around, this can cause the exhaust gas volumn of the exhaust gas volumn in regenerator cross-sectional edge zone greater than the central zone, thereby cause the utilization ratio of regenerator central zone lattice brick to descend, reduce the heat storage capacity of regenerator, influence the raising of wind-warm syndrome.
2, flue gas flow velocity distribution of " center is low, high all around " in traditional flat-head type regenerator 3 also can cause lattice brick temperature distributing disproportionation on the regenerator cross section, and edge lattice brick temperature is higher than the central zone, thereby differential expansion occurs with the central square brick around causing; Simultaneously heat storage capacity reduce also can increase on air in the fluctuation of temperature, long-time running will have a strong impact on the lattice brick life-span of chamber of hot-blast stove.
3, in vault combustion chamber 2, because eddy flow, sky, coal gas air-flow are concentrated be distributed in the edge of combustion chamber area, the pressure of central zone is on the low side, be subjected to the influence of traditional flat-head type regenerator 3 horizontal top surface, can form very big recirculating zone in the central zone of vault combustion chamber 2, influence the capacity utilization of vault combustion chamber 2; Simultaneously, air-flow concentrates on 2 edges, vault combustion chamber burnings, also makes the more close big wall zone in the vigorous district of burning of vault, and this all causes adverse influence to life-span of anti-material etc.
The utility model content
The purpose of this utility model is to provide a kind of top combustion stove with the flue gas even distribution function, can effectively improve the distribution of flue gas on the regenerator cross section, improves the utilization ratio of regenerator lattice brick, improves wind pushing temperature, and helps the long-time running of anti-material.
The purpose of this utility model realizes by following technical proposals: a kind of top combustion stove with the flue gas even distribution function, comprise the turbulent burner on top, the vault combustion chamber at middle part and the regenerator of bottom, it is characterized in that: the top of described regenerator is provided with the concavo-convex distribution of air flow cap of notch cuttype, and wherein the distribution of air flow cap is made up of some horizontal sections and bevel phase.
The distribution of air flow cap begins to radius from the center be L
1In the scope is the horizontal section of distribution of air flow cap; Radius L
1To L
1+ L
2The inclined-plane that has rising in the scope, bevel angle are a
2From radius L
1+ L
2To L
1+ L
2+ L
3Maintenance level in the scope; From radius L
1+ L
2+ L
3To L
1+ L
2+ L
3+ L
4The inclined-plane that has decline in the scope, the angle on inclined-plane are a
1From radius L
1+ L
2+ L
3+ L
4Keep level to distribution of air flow crown portion of regenerator edge.
The line that each ladder summit, the bevel phase vertical section of described this distribution of air flow cap protrusions is linked to be is multistage line or curve.
Because the effect of turbulent burner, flue gas flow can be concentrated and be distributed in the vault combustion chamber is in the zone of distribution of air flow cap horizontal section correspondence all around, using the concavo-convex distribution of air flow cap of notch cuttype can increase this regional resistance of regenerator, reduce center and other regional resistance, simultaneously, because the effect of distribution of air flow cap bevel phase, this can impel flue gas flow when arriving distribution crown portion, to regenerator center and the shunting of other part, thereby make the distribution of flue gas flow on whole regenerator cross section more even.
Further, the regenerator of distribution of air flow cap is set, can effectively improves the utilization ratio of regenerator lattice brick, increase the heat storage capacity of regenerator, thereby improve wind-warm syndrome owing to increased the uniformity coefficient of flue gas flow; The increase of heat storage capacity simultaneously can also reduce the on air fluctuation of wind-warm syndrome, to the stable and long-lived big favourable place of anti-material;
On the other hand; use the height that the concavo-convex distribution of air flow cap of notch cuttype can also reduce recirculating zone, center, combustion chamber; guaranteeing that empty, the smooth ignition of coal gas reaches the capacity utilization that improves the combustion chamber under the situation that does not change sky, coal gas stream eddy flow flow process; make the high-temperature zone away from the vault edge; move to the center, thereby protected the anti-material of vault.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing of I among Fig. 1;
Fig. 3 is the another kind of structural representation of distribution of air flow cap edge among Fig. 1.
Among the figure, 1 is that turbulent burner, 2 is that vault combustion chamber, 3 is that regenerator, 4 is the distribution of air flow cap.
Embodiment
Below in conjunction with accompanying drawing enforcement of the present utility model is described further:
As depicted in figs. 1 and 2, a kind of top combustion stove with the flue gas even distribution function mainly comprises turbulent burner 1, vault combustion chamber 2 and regenerator 3.Wherein distribution of air flow cap 4, L are set up in regenerator 3 tops
1, L
2, L
3, L
4, L
5Be the horizontal projection length of distribution of air flow cap vertical section horizontal section and bevel phase, a
1, a
2Be the bevel phase of distribution of air flow cap and the angle of horizontal plane.This distribution of air flow cap 4 begins to radius from the center be L
1In the scope is the horizontal section of distribution of air flow cap; Radius L
1To L
1+ L
2Interior each layer height of scope is compared adjacent interior ring and is increased progressively step by step, and angle is a
2, be the bevel phase of distribution of air flow cap; From radius L
1+ L
2To L
1+ L
2+ L
3Keeping distribution of air flow crown portion in the scope is level, is the horizontal section of distribution of air flow cap; From radius L
1+ L
2+ L
3To L
1+ L
2+ L
3+ L
4Interior each layer height of scope is compared adjacent interior ring and is successively decreased step by step, and angle is a
1, be the bevel phase of distribution of air flow cap; From radius L
1+ L
2+ L
3+ L
4Keep level to distribution of air flow crown portion of regenerator edge, for distributing the horizontal section of cap.
More than each parameter L
1, L
2, L
3, L
4, L
5, a
1, a
2All adjustable.
Build by laying bricks or stones finish after, the stepped machicolated form of distribution of air flow cap.In the burning phase, flue gas flow deflects when being provided with regenerator top of distribution of air flow cap through this, thus on the regenerator cross section, distribute more even.This also makes on air, and cold wind can make wind-warm syndrome increase after being provided with the regenerator of distribution of air flow cap by this, and all the other do not have influence.
As shown in Figure 2, the lattice brick summit of the edge of distribution of air flow cap couples together and is the multistage line.As shown in Figure 3, the lattice brick summit of the edge of distribution of air flow cap couples together and is curve.
The regenerator end face is provided with the concavo-convex distribution of air flow cap of notch cuttype in the utility model, the distribution of air flow cap is made up of some horizontal sections and bevel phase, thereby can change the shape of distributing cap by quantity, size, the angle parameter that the masonry way that changes checker brick is adjusted horizontal section and bevel phase.This kind structure can effectively be improved the distribution situation of flue gas flow, and simple in structure, realizes that easily its effect obviously is better than the top combustion stove regenerator of traditional flat-head type.
The above, it only is preferred embodiment of the present utility model, be not the scope that is used for limiting the utility model patent working, all variation and modification according to the described shape of the utility model claim, structure, feature and principle etc. all should be contained in the claim of the present utility model.
Claims (3)
1. top combustion stove with the flue gas even distribution function, comprise the turbulent burner on top, the vault combustion chamber at middle part and the regenerator of bottom, it is characterized in that: the top of described regenerator is provided with the concavo-convex distribution of air flow cap of notch cuttype, and wherein the distribution of air flow cap is made up of horizontal section and bevel phase.
2. the top combustion stove of band flue gas even distribution function as claimed in claim 1 is characterized in that: the distribution of air flow cap begins to radius from the center be L
1In the scope is the horizontal section of distribution of air flow cap; Radius L
1To L
1+ L
2The inclined-plane that has rising in the scope, bevel angle are a
2From radius L
1+ L
2To L
1+ L
2+ L
3Maintenance level in the scope; From radius L
1+ L
2+ L
3To L
1+ L
2+ L
3+ L
4The inclined-plane that has decline in the scope, the angle on inclined-plane are a
1From radius L
1+ L
2+ L
3+ L
4Keep level to distribution of air flow crown portion of regenerator edge.
3. the top combustion stove of band flue gas even distribution function as claimed in claim 1 is characterized in that: the line that each ladder summit, the bevel phase vertical section of described this distribution of air flow cap protrusions is linked to be is multistage line or curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320111245 CN203096105U (en) | 2013-03-12 | 2013-03-12 | Top-combustion-type airheater with function of uniformly distributed smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320111245 CN203096105U (en) | 2013-03-12 | 2013-03-12 | Top-combustion-type airheater with function of uniformly distributed smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203096105U true CN203096105U (en) | 2013-07-31 |
Family
ID=48847523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320111245 Expired - Lifetime CN203096105U (en) | 2013-03-12 | 2013-03-12 | Top-combustion-type airheater with function of uniformly distributed smoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203096105U (en) |
-
2013
- 2013-03-12 CN CN 201320111245 patent/CN203096105U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
|
| CX01 | Expiry of patent term |