CN203981374U - Blast furnace crucibe molten iron flow analogue means - Google Patents
Blast furnace crucibe molten iron flow analogue means Download PDFInfo
- Publication number
- CN203981374U CN203981374U CN201420391507.XU CN201420391507U CN203981374U CN 203981374 U CN203981374 U CN 203981374U CN 201420391507 U CN201420391507 U CN 201420391507U CN 203981374 U CN203981374 U CN 203981374U
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- CN
- China
- Prior art keywords
- blast furnace
- molten iron
- glass container
- organic glass
- furnace crucibe
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Abstract
A kind of blast furnace crucibe molten iron flow analogue means, comprises organic glass container, top cover, water distributor, conductivity measurement, data acquisition unit and the dead stock column being made up of metal framework, gauze and hard ball.The built-in dead stock column of organic glass container, upper end is provided with the top cover that adds entrance with water injection pipe and solution, and bottom is provided with drainpipe, side lower part is provided with rising pipe, on inwall brace table, lay water distributor, rising pipe root installation and measuring head, detection head connects respectively conductivity measurement and data acquisition unit.Reach after predetermined fluid level to water filling in organic glass container, add saturated KCl solution, in the time that testing conductivity value and initial value differ 2%, calculate container inner fluid piston region, dead band and full mixed zone volume ratio.The utility model can simulate the flow state of molten iron in blast furnace crucibe on the whole, understands dead stock column floating state in blast furnace crucibe, for alleviating molten iron, washing away of cupola well wall and cylinder bottom is corroded theoretical foundation is provided.
Description
Technical field
The utility model belongs to blast furnace ironmaking field, relates in particular to a kind of blast furnace crucibe molten iron flow analogue experiment installation.
Background technology
Cupola well is the key position that determines the life of the blast furnace.Hearth erosion can go out to send explanation from thermal conduction study and fluid mechanics substantially, and flowing of molten hot metal has certain erosion action to cupola well bottom lining.At cupola well middle part, tuyere area and shaft middle and lower part, exist a coke with the space that extremely slowly speed declines, and the fraction void that coke is piled up is herein 0.2～0.4, and this coke agglomerate is called dead stock column.In the blast furnace of normal operation, dead stock column swims in molten iron, and it may contact bearth brick lining, also may be full of whole cupola well.Cupola well fills with in slag molten iron situation, is subject to the impact of dead stock column and the process of tapping a blast furnace, and slag molten iron directly impacts cupola well furnace bottom hot side, is difficult to form stable speed and temperature boundary layer at cupola well furnace bottom hot side.In order to reduce or to avoid hot slag molten iron to the washing away of cupola well furnace bottom, need research to cause the reason of the inner slag molten iron flow of cupola well, to extend the life-span of blast furnace hearth and bottom.
Cupola well is interior owing to there being dead stock column, so mobility status more complicated, detect widely and surveillance equipment although have on blast furnace, but the mobility status in cupola well cannot directly be measured, because blast furnace hearth and bottom in smelting process will constantly be subject to the chemical erosion of washing away of 1500～1600 DEG C of left and right high temperature sludge molten iron and high temperature furnace slag, its condition of work is especially severe.
Want to address the above problem, need to study the flow state of molten iron in blast furnace crucibe, the means of the metallurgical simulation of application can calculate the motor behavior of cupola well inner fluid, reach a solution of a problem.
Domestic, less to the experimental study report of blast furnace crucibe bottom molten iron flow state in application simulation means, and unified experimental program and experimental standard are not proposed, mainly because the many factors that blast furnace crucibe bottom molten iron flow state relates to, need many cover experimental provisions or kinds of experiments method just can study, workload and experimental cost are larger, are unfavorable for the researcher research work that is in full swing.Also opinions vary for the external PHYSICAL MODELING OF IN at blast furnace crucibe molten iron flow state aspect, for field and the problem designed, designed empirical model be concerned about separately, in the process designing a model, propose different hypothesis and ignored different influence factors, so far do not form unified experimental technique and specification, the result obtaining for different experiments can not mutually be quoted and corroborate each other, and causes a large amount of repeating to study and the wasting of resources.
Notification number CN102279091A has introduced a kind of experimental provision and method of analog blast furnace cupola well furnace bottom molten iron flow, by setting up the physical model of blast furnace crucibe, application Laser Doppler Velocimeter, obtain the mean flow rate of cupola well inner fluid, but owing to being subject to the impact of dead stock column in cupola well, the method can only record partial fluid speed, can not reflect the flow state of whole model inner fluid.
Summary of the invention
The utility model provides a kind of blast furnace crucibe molten iron flow analogue means, its object is intended to utilize this unit simulation blast furnace crucibe molten iron flow state, to obtain mobility status and the parameter of molten iron in blast furnace crucibe, thereby the adjustment of guide field production technology, effectively alleviates molten iron washing away cupola well furnace bottom.
For this reason, the solution that the utility model is taked is:
A kind of blast furnace crucibe molten iron flow analogue means, is characterized in that, comprises organic glass container, top cover, water distributor, conductivity measurement, data acquisition unit and dead stock column; Described dead stock column is made up of metal framework, gauze and hard ball.Cylindrical metal framework excircle and bottom are all installed on gauze, filling hard ball in gauze; Equidistantly be fixed with at least 3 inverted "L" shaped brace tables on cylindrical shape organic glass container inner wall top, brace table lower inside has the circular hole of diameter 8～15mm, in circular hole, be threaded connection fixed bar, above brace table, lay circular water distributor, on water distributor, being uniformly distributed 700～750 diameters is 1～3mm aperture; Organic glass container upper end is provided with top cover, is provided with solution and adds entrance in the middle of top cover, and top cover one side connects water injection pipe; There is the scale taking millimeter as unit at organic glass container outer wall vertical direction mark, in organic glass container and the concentric dead stock column of simulation that is provided with, organic glass container bottom is provided with drainpipe, side lower part is evenly equipped with at least 2 rising pipes, rising pipe root is equipped with detection head, detection head connects conductivity measurement by wire, and conductivity measurement is connected with data acquisition unit.
Described hard ball is two kinds of hollow balls, and diameter is respectively 30～50mm and 8～15mm.
On described organic glass container, edge is provided with O-ring seal with top cover connecting portion.
The length of described fixed bar is 10～15mm.
Described rising pipe is arranged on upwards 220～320mm position of organic glass container bottoms.
Voidage after described dead stock column filling hard ball is 0.3～0.4.
Described cylindrical shape organic glass container dimensional is: high 1000～1050mm, diameter is 1000～1100mm.
Described cylindrical metal frame size is: high 800～850mm, diameter is 850～900mm.
The analogy method of the utility model blast furnace crucibe molten iron flow is:
1, by water injection pipe from top cover to organic glass container in water filling, current evenly drop onto dead stock column top through water distributor, when liquid level reaches after 400～420mm, open rising pipe, reduce injected water flow, make liquid level keep stable.
2, add the saturated KCl tracer solution of the instantaneous 1000ml of adding of entrance by top cover solution, carry out liquid electric conductivity test image data at water outlet simultaneously.
3, in the time that testing conductivity value and initial value differ 2%, think that tracer agent flows out completely, one group of simulated experiment finishes.
4, by data substitution flow regimes volume ratio computing formula (1)～(7) that gather, flow regimes volume ratio computing formula is as follows:
Piston region volume ratio:
V
p=(θ
min+θ
max)/2 （1）
The volume ratio in dead band:
V
d=1-θ
AV （2）
Full mixed zone volume ratio:
V
m=1-V
p-V
d （3）
In formula: θ
minnon dimensional time while starting to occur for tracer agent;
θ
min=t
min/t
a （4）
θ
maxnon dimensional time while reaching Cmax for tracer agent;
θ
max=t
max/t
a （5）
T
afor the theoretical residence time of tracer agent in model;
T
a=[intermediate tank liquid total measurement (volume) (V)]/[liquid volume flow (Q
m)] (6)
T
minfor tracer agent starts the response time;
T
maxfor tracer concentration reaches maximum response time;
T
mfor the mean residence time of tracer agent in model;
θ
aVnon dimensional time during for tracer agent mean concentration;
θ
AV= t
m/t
a （7）
After calculating, obtain piston region, the shared volume ratio in dead band and full mixed zone of container inner fluid, thereby obtain the flow state in container inner fluid region.
The beneficial effects of the utility model are:
The utility model warp is to production scene 3200m
3the analogue simulation of the 1:12 ratio that blast furnace crucibe carries out, for dead stock column floating state in blast furnace crucibe, and the impact of tapping hole height change on molten iron flow in cupola well, all carry out effective modeling effort, adjust by this cover analogue experiment installation guide field production technology, can effectively alleviate the wash away erosion of molten iron to cupola well wall and cupola well bottom in cupola well, be the blast furnace longevity theoretical foundation that provides the foundation.
Brief description of the drawings
Fig. 1 is blast furnace crucibe molten iron flow analogue means section of structure.
In figure: drainpipe 1, organic glass container 2, hard ball 3, metal framework 4, fixed bar 5, water injection pipe 6, top cover 7, solution add entrance 8, water distributor 9, packing ring 10, brace table 11, dead stock column 12, rising pipe 13, detection head 14, conductivity measurement 15, data acquisition unit 16.
Embodiment
As seen from Figure 1, the utility model blast furnace crucibe molten iron flow analogue means is made up of organic glass container 2, top cover 7, water distributor 9, conductivity measurement 15, data acquisition unit 16 and dead stock column 12.
Dead 12 of stock columns are made up of hard ball 3, metal framework 4 and gauze, the high 820mm of metal framework 4, and diameter is 880mm.Excircle and bottom at cylindrical metal framework 4 are all installed on gauze, gauze is in-built fills up diameter and is respectively the hard ball 3 of 30mm and two kinds of hollow balls of 10mm, wherein diameter is that 30mm hollow ball is 1927, diameter is that 10mm hollow ball is 33500, and the voidage of the dead stock column 12 of control simulation is 0.35.Organic glass container 2 is a cylindrical shape, and it is highly 1039mm, and diameter is 1080mm.Equidistantly be fixed with 4 inverted "L" shaped brace tables 11 in the upper inside wall of organic glass container 2, the length of brace table 11 is 120mm, brace table 11 tops to the height of organic glass container 2 upper ends is 50mm, have respectively the aperture of diameter 10mm apart from bottom 25mm and 45mm place in the lower inside of each brace table simultaneously, be used for arranging fixed bar 5, the diameter of fixed bar 5 is 10mm, its length is 15mm, be fixed on brace table 11 by screw thread, be used for limiting metal framework 4 Floating Heights, the rising pipe 13 that is arranged on organic glass container 2 bottoms is 280mm from organic glass container 2 bottom surfaces height upwards.Brace table 11 is laid circular water distributor 9 above, is uniformly distributed the aperture that 726 diameters are 1mm on water distributor 9, makes the current can be from top cover 7 uniform-flows till death above stock column 12.
The upper end of organic glass container 2 is provided with top cover 7, is installed on solution and adds entrance 8 in the middle of top cover 7, and a side of top cover 7 is connected with a water injection pipe 6.Be marked with the scale taking millimeter as unit in organic glass container 2 outer wall vertical direction signs, in organic glass container 2 and the concentric dead stock column 12 of simulation that is provided with, organic glass container 2 bottoms are provided with drainpipe 1, side lower part is evenly equipped with 4 rising pipes 13, rising pipe 13 roots are equipped with detection head 14, detection head 14 connects conductivity measurement 15 by wire, and conductivity measurement 15 is connected with data acquisition unit 16.
Claims (8)
1. a blast furnace crucibe molten iron flow analogue means, is characterized in that, comprises organic glass container, top cover, water distributor, conductivity measurement, data acquisition unit and dead stock column; Described dead stock column is made up of metal framework, gauze and hard ball, and cylindrical metal framework excircle and bottom are all installed on gauze, filling hard ball in gauze; Equidistantly be fixed with at least 3 inverted "L" shaped brace tables on cylindrical shape organic glass container inner wall top, brace table lower inside has the circular hole of diameter 8～15mm, in circular hole, be threaded connection fixed bar, above brace table, lay circular water distributor, on water distributor, being uniformly distributed 700～750 diameters is 1～3mm aperture; Organic glass container upper end is provided with top cover, is provided with solution and adds entrance in the middle of top cover, and top cover one side connects water injection pipe; There is the scale taking millimeter as unit at organic glass container outer wall vertical direction mark, in organic glass container and the concentric dead stock column of simulation that is provided with, organic glass container bottom is provided with drainpipe, side lower part is evenly equipped with at least 2 rising pipes, rising pipe root is equipped with detection head, detection head connects conductivity measurement by wire, and conductivity measurement is connected with data acquisition unit.
2. blast furnace crucibe molten iron flow analogue means according to claim 1, is characterized in that, described hard ball is two kinds of hollow balls, and diameter is respectively 30～50mm and 8～15mm.
3. blast furnace crucibe molten iron flow analogue means according to claim 1, is characterized in that, on described organic glass container, edge is provided with O-ring seal with top cover connecting portion.
4. blast furnace crucibe molten iron flow analogue means according to claim 1, is characterized in that, the length of described fixed bar is 10～15mm.
5. blast furnace crucibe molten iron flow analogue means according to claim 1, is characterized in that, described rising pipe is arranged on upwards 220～320mm position of organic glass container bottoms.
6. blast furnace crucibe molten iron flow analogue means according to claim 1, is characterized in that, the voidage after described dead stock column filling hard ball is 0.3～0.4.
7. blast furnace crucibe molten iron flow analogue means according to claim 1, is characterized in that, described cylindrical shape organic glass container dimensional is: high 1000～1050mm, diameter is 1000～1100mm.
8. blast furnace crucibe molten iron flow analogue means according to claim 1, is characterized in that, described cylindrical metal frame size is: high 800～850mm, diameter is 850～900mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420391507.XU CN203981374U (en) | 2014-07-16 | 2014-07-16 | Blast furnace crucibe molten iron flow analogue means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420391507.XU CN203981374U (en) | 2014-07-16 | 2014-07-16 | Blast furnace crucibe molten iron flow analogue means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981374U true CN203981374U (en) | 2014-12-03 |
Family
ID=51978804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420391507.XU Expired - Fee Related CN203981374U (en) | 2014-07-16 | 2014-07-16 | Blast furnace crucibe molten iron flow analogue means |
Country Status (1)
| Country | Link |
|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277334A (en) * | 2014-07-16 | 2016-01-27 | 鞍钢股份有限公司 | Apparatus for simulating flow of molten iron in hearth of blast furnace, and method thereof |
| CN106929615A (en) * | 2017-04-13 | 2017-07-07 | 安徽工业大学 | A kind of blast furnace crucibe numerical simulation and resolution system and its control method |
-
2014
- 2014-07-16 CN CN201420391507.XU patent/CN203981374U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277334A (en) * | 2014-07-16 | 2016-01-27 | 鞍钢股份有限公司 | Apparatus for simulating flow of molten iron in hearth of blast furnace, and method thereof |
| CN106929615A (en) * | 2017-04-13 | 2017-07-07 | 安徽工业大学 | A kind of blast furnace crucibe numerical simulation and resolution system and its control method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20200716 |