CN203159642U - Air quantity regulation device of blast furnace - Google Patents
Air quantity regulation device of blast furnace Download PDFInfo
- Publication number
- CN203159642U CN203159642U CN 201320177096 CN201320177096U CN203159642U CN 203159642 U CN203159642 U CN 203159642U CN 201320177096 CN201320177096 CN 201320177096 CN 201320177096 U CN201320177096 U CN 201320177096U CN 203159642 U CN203159642 U CN 203159642U
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- blast furnace
- air
- valve
- nipple
- blast
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Abstract
The utility model discloses an air quantity regulation device of a blast furnace, which comprises a hot air main pipe and a branch pipe, wherein the branch pipe comprises a gooseneck, a nipple, an elbow, a belly pipe and a tuyere. The air quantity regulation device is characterized in that the longitudinal center of the nipple is provided with a valve of which the opening cross-section area can be regulated; both ends of the valve are respectively connected with the nipple through flanges; and the opening/closing of the valve is controlled by a blast furnace operating chamber. The device partially or completely plugs the air supply area of the blast furnace tuyere, thereby flexibly and reasonably controlling the coal air flow at the lower part in the blast furnace, avoiding a series of air-reduced, air-halted and air-accompanied operations performed in order to regulate the air supply quantity, and finally ensuring that the blast furnace is safe and smooth to operate and high in yield.
Description
Technical field
The utility model relates to a kind of blast furnace volume adjusting apparatus, belongs to mechanical field.
Background technology
Blast furnace from air-supply arrangement in the blast furnace air blast be a very important process.Along with the change of bottom blowing system, will produce tremendous influence to the furnace run of blast furnace.Change air quantity, just can change wind speed, change blast energy, thereby influence the coal gas distributions of bottom house, thereby the direct motion of blast furnace is produced influence greatly.
The operation of blast furnace is a process complicated and changeable.At first owing to former, the fuel variations of blast furnace, the variation of equipment and peripheral logistics are protected for waiting variation of other factors all might require the corresponding adjustment of blowing system.And the variation of these peripheral operation environment is inevitably, therefore also just needs blast furnace to carry out the checking operation to keep ordinary production.Secondly, variation also is regular in the stove of blast furnace.Do not live such as cupola well, need reduce air quantity, progressively enliven cupola well.And above these situations only checking be not enough, also need to reduce simultaneously air supply areas, to reach big wind speed and the bigger blast energy that under less air quantity, produces.For many years the way that iron industry is traditional is: with refractory materials the air port of air-supply arrangement front end is blocked up behind the blast furnace staying, by the time the air port is disclosed out one by one after external circumstances is recovered normal or conditions of blast furnace takes a turn for the better again.Have two kinds and disclose the general traditional way in air port, first kind of way is that damping down is disclosed the air port, and second kind of way is not to be with wind to disclose the air port under the damping down state.Operation can bring many harm like this: the first, for stifled air port and disclose the air port and frequently the damping down operation will increase the chance of edge airflow scouring furnace wall, thereby reduce the life-span of blast furnace; The second, damping down operation meeting reduces the output of blast furnace frequently, influences the economic benefit of blast furnace; The 3rd, to disclose under the situation of air port operation at band wind, it is very big that the air port has a large amount of coal gas of high temperature generation and noise, can cause the pollution of operator's dangerous and environment.
Therefore, if can realize blast furnace not damping down reach the operation of adjusting the blast furnace feeding air quantity, will make great contribution aspect blast-furnace smelting and the blast furnace safety in production.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model provides a kind of blast furnace volume adjusting apparatus, set up the valve that to regulate air supply areas at air-supply arrangement, the air supply areas in certain air port of blast furnace is carried out part or all shutoff, thereby realize blast furnace to flexible, the control rationally of lower coal air-flow, thereby reach blast furnace safety, direct motion, aim of high yield.
The technical solution adopted in the utility model is: a kind of blast furnace volume adjusting apparatus, comprise hot-blast main and arm, arm comprises swan neck, nipple, elbow, belly pipe, air port successively, it is characterized in that: the valve of adjustable openings cross-sectional area is set the central position longitudinally at nipple, the valve two ends link to each other with nipple with flange respectively, and the switch of valve is controlled by the blast furnace operating chamber.
Further, described valve is glasses valve.
This programme is to improve on the basis of existing equipment, redesigns as follows:
A. existing nipple is carried out horizontal partition at vertical height 50% place, it is divided into two;
B. install the nipple cross-section that is divided into two additional flange respectively, and with electric welding itself and nipple cross section are welded, guarantee that weld seam does not tightly leak out, and can bear blast-furnace hot-air pressure;
C. the upper and lower end face flange of glasses valve is added gasket with the corresponding flange of nipple respectively and be fixed with bolt;
D. the glasses valve trip switch is caused the blast furnace operating chamber.
The blast furnace volume adjusting apparatus that the utility model provides, beneficial effect is as follows: (1) realizes the flexible of blast branch pipe of blast furnace air quantity; (2) avoided that a series of that the air-supply air quantity carries out subtract in order to regulate, damping down and the operation of band wind; (3) avoided traditional high furnace zone wind to disclose dangerous, uneconomic ways such as air port operation, finally realized blast furnace to flexible, the control rationally of lower coal air-flow, thereby reach blast furnace safety, direct motion, aim of high yield.
Below in conjunction with drawings and Examples the utility model is described further.
Description of drawings
Fig. 1 is structural representation of the present utility model.
1 is the hot-blast main among the figure, and 2 is swan neck, and 3 is nipple, and 4 is elbow, and 5 is belly pipe, and 6 is the air port, and 7 is valve, and 8,9 is flange, and 10 is the blast furnace operating chamber.
Embodiment
Embodiment:
As shown in Figure 1, a kind of blast furnace volume adjusting apparatus, comprise hot-blast main 1 and arm, arm comprises swan neck 2, nipple 3, elbow 4, belly pipe 5, air port 6 successively, it is characterized in that: the valve 7 of adjustable openings cross-sectional area is set the central position longitudinally at nipple 3, valve 7 two ends link to each other with nipple 3 with flange 8,9 respectively, and the switch of valve 7 is by 10 controls of blast furnace operating chamber; Described valve 7 is glasses valve.
Concrete making method is:
This programme is to improve on the basis of existing equipment, redesigns as follows:
A. existing nipple is carried out horizontal partition at vertical height 50% place, it is divided into two;
B. install the nipple cross-section that is divided into two additional flange respectively, and with electric welding itself and nipple cross section are welded, guarantee that weld seam does not tightly leak out, and can bear blast-furnace hot-air pressure;
C. the upper and lower end face flange of glasses valve is added gasket with the corresponding flange of nipple respectively and be fixed with bolt;
D. the glasses valve trip switch is caused the blast furnace operating chamber.
Be that example is described as follows with Taiyuan Iron and Steel Co. iron work three blast furnaces:
During three blast furnace scheduled overhauls, behind the damping down for blast furnace can recover smoothly, 3 in stifled air port, wherein two air ports are that checking to 1500 m3/min manually discloses the air port operation, have an air port then difficulty disclose, disclose out behind the damping down.
In this process, will produce a series of harm so: the first, checking is disclosed the air port and is caused coal gas to leak, and produces very big noise, is a kind of threat to people's safety; The second, checking, damping down cause slowing down of blast-furnace smelting process, lose certain iron amount accordingly, bring financial loss; The 3rd, checking has delayed the process that blast furnace recovers; The 4th, long-range and say that checking causes the development of edge air-flow, thus increased air-flow to the washing away of blast furnace lining, reduced the life-span of blast furnace.
The blast furnace volume adjusting apparatus that uses the utility model to provide, expectation will produce following economic benefit (year benefit):
1. calculated in 20 minutes to disclose an air port checking:
The normal air quantity of three blast furnaces is 3750m3/min, needs checking to 1500 m3/min can carry out artificial safety usually and discloses the air port operation, and the yearly plan damping down is 4 times usually, and stifled air port is 3 at every turn, divides and discloses out for 3 times.Average ton iron winds consumption is 1010 m3/min, and ton iron economic benefit is 500 yuan.Estimate that economic benefit is as follows:
(3750-1500) ÷ 2 * 20 * 2 ÷ 1010 * 4 * 3 * 500=267326.73 unit
2. once calculate to disclose the primary air nozzle damping down:
Disclose if run into the air port difficulty, must handle by damping down so, the time of stopping, blowing is generally 40min, the time of handling the air port is 15min, if air quantity also is to be down to 0 m3/min by 3750 m3/min, other parameters are the same, convert output with air quantity, economic benefit is calculated as follows:
Ten thousand yuan of [(3750 ÷ 2) * 40 * 2+3750 * 15] ÷ 1010 * 3 * 4 * 500=122.53.
Claims (2)
1. blast furnace volume adjusting apparatus, comprise hot-blast main and arm, arm comprises swan neck, nipple, elbow, belly pipe, air port successively, it is characterized in that: the valve of adjustable openings cross-sectional area is set the central position longitudinally at nipple, the valve two ends link to each other with nipple with flange respectively, and the switch of valve is controlled by the blast furnace operating chamber.
2. blast furnace volume adjusting apparatus according to claim 1, it is characterized in that: described valve is glasses valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177096 CN203159642U (en) | 2013-04-10 | 2013-04-10 | Air quantity regulation device of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177096 CN203159642U (en) | 2013-04-10 | 2013-04-10 | Air quantity regulation device of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203159642U true CN203159642U (en) | 2013-08-28 |
Family
ID=49020841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320177096 Expired - Fee Related CN203159642U (en) | 2013-04-10 | 2013-04-10 | Air quantity regulation device of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203159642U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506208A (en) * | 2016-02-02 | 2016-04-20 | 唐山金山腾宇科技有限公司 | Energy-saving environment-friendly air supply branch pipe |
| CN110172537A (en) * | 2019-05-13 | 2019-08-27 | 杭州良辰电子商务有限公司 | A kind of ironmaking hot-blast stove |
-
2013
- 2013-04-10 CN CN 201320177096 patent/CN203159642U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506208A (en) * | 2016-02-02 | 2016-04-20 | 唐山金山腾宇科技有限公司 | Energy-saving environment-friendly air supply branch pipe |
| CN110172537A (en) * | 2019-05-13 | 2019-08-27 | 杭州良辰电子商务有限公司 | A kind of ironmaking hot-blast stove |
| CN110172537B (en) * | 2019-05-13 | 2021-09-03 | 浙江泰邦电器有限公司 | Iron-making hot blast stove |
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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: 20130828 Termination date: 20190410 |