CN204918642U - Rectilinear hot -blast tubular construction of tuber pipe is mixed in top combustion stove's area - Google Patents
Rectilinear hot -blast tubular construction of tuber pipe is mixed in top combustion stove's area Download PDFInfo
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- CN204918642U CN204918642U CN201520538216.3U CN201520538216U CN204918642U CN 204918642 U CN204918642 U CN 204918642U CN 201520538216 U CN201520538216 U CN 201520538216U CN 204918642 U CN204918642 U CN 204918642U
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- hot blast
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Abstract
(B, ) the utility model relates to a rectilinear hot -blast tubular construction of tuber pipe is mixed in top combustion stove's area, it is including the hot air exitus who sets up on hot -blast furnace lateral wall upper portion, hot air exitus department installs hot -blast branch pipe, is provided with muddy tuber pipe entry on the hot -blast branch pipe lateral wall, mixes the tuber pipe entrance and installs muddy tuber pipe, mixes the highest position of tuber pipe and is not higher than hot air exitus, mixes tuber pipe and cold wind house steward and communicates with each other. The tuber pipe was mixed in this area perpendicular hot -blast tubular construction has avoided the high wind -warm syndrome of fluctuation to hot -blast valve and hot -air pipes's destruction, has improved hot -air pipes's stability, and simultaneously, hot -blast rectilinear tubular construction has reduced the maintenance platform and has sew with long stitches the height of car frame, saving construction cost. (B, )
Description
Technical field
The utility model relates to the hot blast manifold in a kind of blast furnace iron-making process in top combustion stove system.
Background technology
Industrial practice is verified, and top combustion stove is that one can the hotblast stove structure of steady operation under 1200 DEG C ~ 1300 DEG C wind-warm syndrome for a long time, and the hot-blast outlet of this hotblast stove is positioned at bottom the vault above regenerator.In the technique of routine, export with hot air furnace hot air the hot blast manifold be connected, be connected in level pipe mode with hot blast main pipe, therefore, hot-blast outlet, hot blast manifold, hot blast main pipe are all on same absolute altitude.Because the position of hot blast main pipe is higher, under the operating mode of high wind-warm syndrome, the stability of hot air duct has become an important technical task.
In order to solve the problem of the difference of altitude between the hot blast main pipe of top combustion stove and blast furnace bustle pipe, common technical scheme arranges vertical pipe (i.e. so-called vertical tube) at hot blast main pipe end, start in the bottom of vertical tube, then be connected with blast furnace bustle pipe with the hot air duct of level.In order to keep blast furnace feeding wind-warm syndrome stable and consistent, hot blast needs the mixed wind system of access before entering blast furnace (namely introduce a small amount of cold wind, maintain a set(ting)value in order to regulate the temperature entering the hot blast of blast furnace).
So-called mixed wind system, be made up of mixing wind tube, mixed wind trip valve, mixed wind variable valve and loop expansion pipe, one end of mixing wind tube is drawn by cold blast main, the other end access hot blast main pipe or hot blast manifold.
In this case, be generally that as Fig. 1, or on vertical tube, access mixing wind tube as Fig. 2, now vertical tube also can be referred to as wind mixed chamber at hot blast main pipe end access mixing wind tube.
Through long-time running test, this structural disadvantages is obvious:
First, in the process of hotblast stove air-supply each time, hot blast starting temperature and latter stage temperature waving interval at about 80 ~ 150 DEG C, in this case, there is shock action to hot blast valve and hot blast main pipe in the temperature and pressure of hot blast, have impact on the stability of hot blast valve life-span and hot blast main pipe;
Secondly, in the technical scheme of routine, hot-blast main is only provided with a set of mixed wind system, once mixed wind devices fault or maintenance, the stability of blast furnace feeding wind-warm syndrome can be affected.
In addition, as Fig. 1 and Fig. 2, due to the structural limitations of vertical tube, vertical tube is subject to the impact from the thermal expansion of two sections hot blast main pipe, and refractory lining easily suffers damage, and therefore becomes one of the weakest link of hot blast main pipe.
The present invention's a kind of technical scheme relatively, it is the rectilinear hot blast manifold being configured with band ball vault on every hotblast stove, rectilinear hot blast manifold is provided with mixing wind tube, and its mixing wind tube is arranged at the top (mixing wind tube top is higher than hot-blast outlet) of rectilinear hot blast manifold, as Fig. 3.
The major defect of the program is, when hotblast stove is when burning the campaign, the mixing wind tube top higher than hot-blast outlet is easily subject to the damage of high-temperature flue gas, and such as, this position easily occurs intergranular stress corrosion, and inner lining refractory block builds also more complicated by laying bricks or stones.
Utility model content
the purpose of this utility model is to provide a kind of rectilinear hot blast manifold structure of band mixing wind tube of top combustion stove, owing to having accessed cold wind mixing wind tube on this hot blast manifold, therefore from hot blast manifold, namely the wind-warm syndrome of hot blast carries out mixed wind adjustment, avoid the damage of wind-warm syndrome to hot blast main pipe of fluctuation, reduce inspection platform simultaneously and sew with long stitches the height of frame, save construction cost.
for solving the problems of the technologies described above, the technical solution of the utility model is as follows:
a kind of rectilinear hot blast manifold structure of band mixing wind tube of top combustion stove, comprise the hot-blast outlet being arranged on hotblast stove side wall upper part, described hot-blast outlet is connected with hot blast manifold, hot blast manifold sidewall is provided with mixing wind tube entrance, mixing wind tube entrance is connected with mixing wind tube, the highest position of mixing wind tube is not higher than hot-blast outlet, and mixing wind tube and cold blast main communicate.
described mixing wind tube is provided with variable valve, trip valve and loop expansion pipe.
described rectilinear hot blast manifold comprises vertical section and horizontal section.
described vertical section is provided with loop expansion pipe, and vertical section bottom is fixed on steel structure platform by stationary bearing, and horizontal section is placed on steel structure platform, and the end of horizontal section is connected with hot blast main pipe, horizontal section is provided with hot blast valve and loop expansion pipe.
the utility model has following technique effect:
1, the mixed wind system of configuration on the hot blast manifold of every top combustion stove.The temperature of the hot blast after overmulling wind is stable, the metastable hot blast of this temperature, pressure enters hot blast main pipe through hot blast valve, and enter blast furnace through bustle pipe, therefore the working condition of hot blast valve, hot blast main pipe can be improved, be conducive to extending the hot blast valve life-span, effectively can improve the stability of hot blast main pipe;
2, at the side direction configuration mixing wind tube of vertical hot blast manifold, ensure that the highest portion position of mixing wind tube is not higher or lower than hot-blast outlet, the top that doing so avoids mixing wind tube suffers damage because temperature is too high between the burning campaign.Rule of thumb, when hotblast stove runs under high wind-warm syndrome, the mixing wind tube top higher than hot-blast outlet even can produce intergranular stress corrosion, present invention, avoiding mixing wind tube road and is subject to this damage;
3, present invention also offers a kind of rectilinear hot blast manifold structure, vertical hot blast manifold is made up of vertical section and horizontal section, vertical section arranges loop expansion pipe, horizontal section arranges hot blast valve, loop expansion pipe being connected with hot blast main pipe, the height of hot blast main pipe is the same with blast furnace bustle pipe, and then inspection platform can be reduced and sew with long stitches the height of frame, save construction cost.
Accompanying drawing explanation
below in conjunction with accompanying drawing, the utility model is described further
fig. 1 is one of prior art;
fig. 2 is prior art two;
fig. 3 is prior art three;
fig. 4 is the structural representation of rectilinear hot blast manifold described in embodiment 1;
fig. 5 is the structural representation of rectilinear hot blast manifold described in embodiment 2.
Embodiment
embodiment 1
as shown in Figure 4, bottom the vault of hotblast stove, be provided with hot-blast outlet 3, hot-blast outlet 3 be connected with hot blast manifold 2, hot blast manifold 2 has vertical section and horizontal section, the sidepiece of hot blast manifold 2 vertical section is provided with mixing wind tube entrance, and mixing wind tube entrance is connected with mixing wind tube 1, mixing wind tube 1 is provided with variable valve 6.The not high hot-blast outlet 3 in the position that mixing wind tube is the highest, the top avoiding mixing wind tube suffers damage because temperature is too high between the burning campaign.
mixing wind tube 1 is connected with cold blast main 4, is provided with trip valve 5 and loop expansion pipe 7 between mixing wind tube 1 and cold blast main 4.
embodiment 2
as shown in Figure 5, hot-blast outlet is provided with bottom the vault of hotblast stove, hot-blast outlet is connected with hot blast manifold 2, hot blast manifold 2 comprises vertical section and horizontal section, the sidepiece of hot blast manifold 2 vertical section arranges mixing wind tube entrance, mixing wind tube entrance is connected with mixing wind tube 1, at hot blast manifold 2 vertical section, axial compensator 8 is installed, vertical section bottom is fixed on platform 10 by stationary bearing 9, hot blast manifold 2 horizontal section is provided with hot blast valve 11, be provided with axial compensator between hot blast valve 11 and hot blast main pipe 13, hot blast main pipe height is consistent with the height of blast furnace bustle pipe.
mixing wind tube 1 is provided with variable valve 6.The not high hot-blast outlet 3 in the position that mixing wind tube is the highest, the top avoiding mixing wind tube suffers damage because temperature is too high between the burning campaign.
mixing wind tube 1 is connected with cold blast main 4, is provided with trip valve 5 and loop expansion pipe 7 between mixing wind tube 1 and cold blast main 4.
it will be recognized by those skilled in the art; under the prerequisite not departing from protection domain of the present utility model; various amendment, change and combination can be carried out to above-mentioned embodiment, and think that this amendment, change and combination are within the scope of originality thought.
Claims (5)
1. a rectilinear hot blast manifold structure for the band mixing wind tube of top combustion stove, comprises the hot-blast outlet being arranged on hotblast stove side wall upper part, it is characterized in that:
Described hot-blast outlet place is provided with rectilinear hot blast manifold, and described rectilinear hot blast manifold comprises vertical section and horizontal section,
The vertical section of described rectilinear hot blast manifold is provided with mixing wind tube entrance, and mixing wind tube ingress is provided with mixing wind tube, and the highest position of described mixing wind tube is not higher than hot-blast outlet, and mixing wind tube and cold blast main communicate.
2. the rectilinear hot blast manifold structure of the band mixing wind tube of a kind of top combustion stove as claimed in claim 1, is characterized in that, described mixing wind tube is provided with variable valve, trip valve and loop expansion pipe.
3. the rectilinear hot blast manifold structure of the band mixing wind tube of a kind of top combustion stove as claimed in claim 1, it is characterized in that, described hot blast manifold comprises vertical section and horizontal section.
4. the rectilinear hot blast manifold structure of the band mixing wind tube of a kind of top combustion stove as claimed in claim 3, is characterized in that, described vertical section is provided with loop expansion pipe, and vertical section bottom is fixed on steel structure platform by stationary bearing.
5. the rectilinear hot blast manifold structure of the band mixing wind tube of a kind of top combustion stove as claimed in claim 3, it is characterized in that, described horizontal section peace is shelved on steel structure platform, and the end of described horizontal section is connected with hot blast main pipe, horizontal section is provided with hot blast valve and loop expansion pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538216.3U CN204918642U (en) | 2015-07-23 | 2015-07-23 | Rectilinear hot -blast tubular construction of tuber pipe is mixed in top combustion stove's area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520538216.3U CN204918642U (en) | 2015-07-23 | 2015-07-23 | Rectilinear hot -blast tubular construction of tuber pipe is mixed in top combustion stove's area |
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| Publication Number | Publication Date |
|---|---|
| CN204918642U true CN204918642U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520538216.3U Active CN204918642U (en) | 2015-07-23 | 2015-07-23 | Rectilinear hot -blast tubular construction of tuber pipe is mixed in top combustion stove's area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337100A (en) * | 2016-10-31 | 2017-01-18 | 马鞍山钢铁股份有限公司 | Hot air pipeline system with self compensation function |
| CN112226562A (en) * | 2020-10-27 | 2021-01-15 | 山东莱钢永锋钢铁有限公司 | Hot air temperature automatic regulation protection system |
-
2015
- 2015-07-23 CN CN201520538216.3U patent/CN204918642U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337100A (en) * | 2016-10-31 | 2017-01-18 | 马鞍山钢铁股份有限公司 | Hot air pipeline system with self compensation function |
| CN112226562A (en) * | 2020-10-27 | 2021-01-15 | 山东莱钢永锋钢铁有限公司 | Hot air temperature automatic regulation protection system |
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