CN205628867U - AOD stove bale breaking collecting cover - Google Patents
AOD stove bale breaking collecting cover Download PDFInfo
- Publication number
- CN205628867U CN205628867U CN201620373834.1U CN201620373834U CN205628867U CN 205628867 U CN205628867 U CN 205628867U CN 201620373834 U CN201620373834 U CN 201620373834U CN 205628867 U CN205628867 U CN 205628867U
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- CN
- China
- Prior art keywords
- cover
- heater
- fan housing
- tapping
- draft hood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a AOD stove bale breaking collecting cover, including the furnace body, characterized by: the fire door of furnace body top is equipped with a suction hood, and top suction hood catches the tuber pipe on with and is connected, furnace body tapping direction is equipped with preceding fan housing, and first crosswind pipe and second crosswind pipe are connected respectively to the both sides of preceding fan housing. AOD stove bale breaking collecting cover replaces the roof cover, and entrapment smoke and dust distance shortens dramatically, adds top suction hood inner cover deflector control flue gas trend, has improved capture efficiency, can block all around that the crossflow disturbs, by preceding fan housing entrapment smoke and dust during the tapping, it does not influence the metallurgical process operation simultaneously again to remove dust.
Description
Technical field
This utility model relates to a kind of fume trap cover, and especially a kind of AOD furnace is unpacked fume trap cover.
Background technology
AOD furnace is the refining equipment of argon oxygen decarburizing process, is unpacked by the lifting of workshop overhead traveling crane during AOD furnace work, and charging is smelted to AOD furnace, is toppled over molten steel to other ladle by tumbler after having smelted.During AOD furnace charging, fume amount is big, and flue gas typical temperature is higher, up to more than 500 DEG C；Exhaust gas volumn is big, and along with process equipment keeps the large-scale development, exhaust gas volumn produced by these equipment is very large；Changing greatly of its smoke density and volume.
The big-and-middle-sized metallurgical furnace dedusting such as AOD furnace, roof cover configuration is in the majority.Roof cover is away from fire door distance, and flue dust diffusion is big, needs to increase dedusting air quantity and flow velocity.During metallurgical technology big during flue dust generation amount time little, have little time during big flow trapping；It addition, mainly there are two shift in position at flue dust control point during metallurgical technology, existing only with one trap sites of roof cover, uneconomical, the most efficient.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of AOD furnace is unpacked fume trap cover, and the trapping flue dust distance of this fume trap cover shortens dramatically, and stops crossflow interference, improves arresting efficiency, does not the most affect metallurgical technology operation simultaneously.
The technical scheme provided according to this utility model, described AOD furnace is unpacked fume trap cover, including body of heater, it is characterized in that: the fire door of described body of heater is arranged over top draft hood, top draft hood with on catch airduct and be connected；Fan housing before described body of heater tapping direction is provided with, the both sides of front fan housing connect the first crosswind pipe and the second crosswind pipe respectively.
The cover mouth of described top draft hood is towards the fire door of body of heater, and covers mouthful width more than furnace port diameter.
Cover mouth at described top draft hood is respectively provided on two sides with the first side seal board, is respectively provided on two sides with the second side seal board at body of heater.
When also including for tapping, body of heater carries out the tumbler tumbled.
AOD furnace described in the utility model unpack fume trap cover substitute roof cover, trapping flue dust distance shorten dramatically, add top draft hood inner cover guide plate control flue gas trend, improve arresting efficiency；Surrounding can stop that crossflow disturbs；Being trapped flue dust by front fan housing during tapping, dedusting does not the most affect metallurgical technology operation simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is this utility model charging state diagram.
Fig. 4 is this utility model tapping state diagram.
Detailed description of the invention
When AOD furnace flue dust can not be airtight or time enclosing gets up, can arrange outside gas collection vacuum cleaner, it is in the getter action utilizing cover mouth will have the flue dust inhalation mask of certain distance away from air entry.Actual cover mouth has certain area.Outer cup simple in construction, easily manufactured, it is divided into updraft type and side-suction type two class.When using this type of outer cup, it is considered as the setting height(from bottom) of process equipment, indoor cross-flow interference factor, takes enclosing and other corrective measure if desired.On the premise of not hindering technological operation, cover mouth, as far as possible near flue dust occurring source, avoids crossflow to disturb as far as possible；Set up flange in exhaust hood surrounding, exhaust air rate can be made to reduce；The exhaust air rate of outside gas collection dust shield is affected by the structure of dust shield, suction airflow VELOCITY DISTRIBUTION, the change of cover mouth pressure loss, it is important to determine that distance x and the controlled wind speed V of cover mouth are arrived in control pointx, control point refer to flue dust source to cover mouth point furthest, controlled wind speed is to ensure that dust can be by whole inhalation masks, and the suction velocity must having on control point, it can be determined by field measurement.
AOD furnace flue gas is mainly caught suction in a large number by top draft hood, when cover mouth size makes more greatly angle of flare α (°) of gas collection dust shield can not meet cover mouth central speed VcThan cover mouth average speed VoLess than 1.33 ratio (Vc/Vo< 1.33), and when internal mask pressure loss has considerable influence, adequate measures should be taked, a big exhaust hood is separated into several little exhaust hoods；Or it is baffled in cover；Or on cover mouth, setting bar sealing, it is desirable at bar sealing, wind speed is at more than 10m/s；Or set airflow-distribution board etc. at cover mouth, to guarantee the effect of gas collection dust shield.
When AOD furnace pours out molten steel, flue dust control point changes, and technological operation to be kept space, upper front should separately set side-draught hood, flue dust during to ensure to trap tapping, around installs shrouding additional and avoids workshop crossflow interference, and dissipation flue dust is caught suction inlet auxiliary by increase bilateral and caught suction.The control point of air-suction cover is mixed iron blast centrage, and respective suction nozzle is set up in both sides, then collects to total cleaning shaft and discharges.
Below in conjunction with concrete accompanying drawing, the utility model is described in further detail.
As shown in figures 1-4: described AOD furnace unpack fume trap cover include unpacking 1, body of heater 2, tumbler the 3, first side seal board 4, top draft hood 5, on catch airduct the 6, second side seal board 7, front fan housing the 8, first crosswind pipe the 9, second crosswind pipe 10 etc..
As shown in Figure 1, Figure 3, this utility model includes body of heater 2 and body of heater 2 carries out the tumbler 3 tumbled during for tapping；The fire door of described body of heater 2 is arranged over top draft hood 5, top draft hood 5 with on catch airduct 6 and be connected, the cover mouth of top draft hood 5 is towards the fire door of body of heater 2, and covers mouthful width more than furnace port diameter；Cover mouth at described top draft hood 5 is respectively provided on two sides with the first side seal board 4, is respectively provided on two sides with the second side seal board 7 at body of heater 2；Described body of heater 2 tap direction be provided with before fan housing 8, the both sides of front fan housing 8 connect the first crosswind pipe 9 and the second crosswind pipe 10 respectively.
Operation principle of the present utility model and work process: as it is shown on figure 3, overhead traveling crane lifting in workshop is unpacked 1(i.e. steel ladle) charging to AOD furnace body 2 time can produce volume of smoke, top draft hood 5 carries out catching suction, and the first side seal board 4 can stop that crossflow disturbs.As shown in Figure 4, being toppled over molten steel in body of heater 2 to the flue dust produced during other ladle by tumbler 3, front fan housing 8 catch suction after having smelted, the second side seal board 7 can stop that crossflow disturbs；By top draft hood 5 and front fan housing 8 catch the flue dust of suction respectively by catch airduct the 6, first crosswind pipe 9 and the second crosswind pipe 10 collects to total cleaning shaft and discharges.
Claims (4)
1. AOD furnace is unpacked a fume trap cover, including body of heater (2), it is characterized in that: the fire door of described body of heater (2) is arranged over top draft hood (5), top draft hood (5) with on catch airduct (6) and be connected；Being provided with front fan housing (8) in described body of heater (2) tapping direction, the both sides of front fan housing (8) connect the first crosswind pipe (9) and the second crosswind pipe (10) respectively.
2. AOD furnace as claimed in claim 1 is unpacked fume trap cover, it is characterized in that: the cover mouth of described top draft hood (5) is towards the fire door of body of heater (2), and covers mouthful width more than furnace port diameter.
3. AOD furnace as claimed in claim 1 is unpacked fume trap cover, it is characterized in that: the cover mouth at described top draft hood (5) is respectively provided on two sides with the first side seal board (4), is respectively provided on two sides with the second side seal board (7) at body of heater (2).
4. AOD furnace as claimed in claim 1 is unpacked fume trap cover, it is characterized in that: when also including for tapping, body of heater (2) carries out the tumbler (3) tumbled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620373834.1U CN205628867U (en) | 2016-04-28 | 2016-04-28 | AOD stove bale breaking collecting cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620373834.1U CN205628867U (en) | 2016-04-28 | 2016-04-28 | AOD stove bale breaking collecting cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205628867U true CN205628867U (en) | 2016-10-12 |
Family
ID=57060957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620373834.1U Expired - Fee Related CN205628867U (en) | 2016-04-28 | 2016-04-28 | AOD stove bale breaking collecting cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205628867U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750292A (en) * | 2016-04-28 | 2016-07-13 | 无锡三达环保科技有限公司 | Ladle detaching capturing hood for AOD furnace |
-
2016
- 2016-04-28 CN CN201620373834.1U patent/CN205628867U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750292A (en) * | 2016-04-28 | 2016-07-13 | 无锡三达环保科技有限公司 | Ladle detaching capturing hood for AOD furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20210428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |