CN101846458B - Recirculation cooler and trolley inlet section of blast pipe thereof - Google Patents

Recirculation cooler and trolley inlet section of blast pipe thereof Download PDF

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Publication number
CN101846458B
CN101846458B CN2010102060530A CN201010206053A CN101846458B CN 101846458 B CN101846458 B CN 101846458B CN 2010102060530 A CN2010102060530 A CN 2010102060530A CN 201010206053 A CN201010206053 A CN 201010206053A CN 101846458 B CN101846458 B CN 101846458B
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blast pipe
chassis
entrance
striker plate
chassis entrance
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CN101846458A (en
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高德亮
张峰
戴传德
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Zhongye Changtian International Engineering Co Ltd
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Zhongye Changtian International Engineering Co Ltd
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Abstract

The invention discloses a trolley inlet section of a blast pipe. One end of the trolley inlet section is communicated with the blast pipe, while the other end is communicated with an air vent on a sealing plate at the inner side of the trolley. A plurality of striker plates are sequentially arranged inside the trolley inlet section of the blast pipe on one side closing to the air vent from top to bottom; each striker plate are arranged slantwise and upwards from the air vent side to the blast pipe side, and the left and right outer edges of each striker plate are fixedly and respectively connected with the pipe wall of the trolley inlet section of the blast pipe; and an included angle between each striker plate and a horizontal plane is greater than the repose angle of mineral aggregate. In the course of dynamically discharging by the trolley, the mineral aggregate can fall in the trolley inlet section of the blast pipe of the air vent side, slide out of the trolley inlet section of the blast pipe along the striker plate slantwise arranged and then fall into a discharge chute together with other mineral aggregate, thereby effectively solving the problem that the mineral aggregate can enter a blast pipe through the air vent on the sealing plate at the inner side of the trolley in the process of dynamic discharging. On the basis, the invention also provides a recirculation cooler provided with the trolley inlet section of the blast pipe.

Description

Central cooler and blast pipe chassis entrance thereof
Technical field
The present invention relates to field of iron and steel smelting, be specifically related to a kind of central cooler and blast pipe chassis entrance thereof.
Background technology
In the smelting iron and steel technical process, central cooler is arranged at sintering circuit and mineral aggregate is gone between furnaceman's preface, is used to cool off the mineral aggregate of sintering.The integral body of central cooler is circular, and the mineral aggregate after sintering is finished moves a week by circular cooler trolley in central cooler, and then finishes the cooling of mineral aggregate.
See also Fig. 1 and Fig. 2, wherein, Fig. 1 is the overall structure schematic diagram of central cooler, and Fig. 2 is the A-A part sectioned view of central cooler shown in Figure 1.
Central cooler 10 roughly is divided into I district, high-temperature region, middle warm area II district, low-temperature space III district and IV district, non-cooling zone.In the course of work, chassis 11 and backbar 12 center on the center uniform rotation of central cooler 10 in real time, mineral aggregate after sintering is finished is arranged on the chassis through the feed chute 13 of non-cooling zone loading station, and along with the rotation of chassis 11 enters three cooling zones successively: high-temperature region I, middle warm area II and low-temperature space III; Meanwhile, cold wind is blown into the chassis lower space of cooling zone through blast pipe 14, and pass the side plate of grate plate 111 and backbar 12 from bottom to top, thus force to pass the mineral aggregate layer on grate plate 111 and backbar 12 side plates, carry out discharging after sufficient heat exchange forms hot flue gas with mineral aggregate.Afterwards, chassis 11 returns back to non-cooling zone unloading station, finishes discharge operation.Wherein, the assembly relation between blast pipe 14 and the chassis inner seal plate 15 as shown in Figure 3, this figure is the profile that radially forms along central cooler.
Particularly, on chassis inner seal plate 15, have ventilating opening, one end of blast pipe chassis entrance 141 is fixedlyed connected with the chassis inner seal plate 15 of this ventilating opening periphery, and the other end is fixedlyed connected with blast pipe 14, thereby has formed by the cold air duct of blast pipe 14 to chassis 11 lower space.When entering unloading station, blast pipe 14 stops air intake, trolley grating plate 111 is downward-sloping gradually to be opened to realize discharge operation, in the process of dynamically discharging, will there be the part mineral aggregate to enter blast pipe chassis entrance 141 by this ventilating opening, and slowly accumulate and progressively press in the blast pipe, at last blast pipe chassis entrance 141 is stopped up, make the ventilating opening of chassis inner seal plate partially or completely lose draught effect.
For this reason, prior art has carried out improving design at the problems referred to above, with the blast pipe chassis entrance 141 of chassis inner seal plate 15 sides adjacent in add backgauge with ventilation fence 16, please in the lump referring to Fig. 4 and Fig. 5, wherein, Fig. 4 shows the assembly relation between the blast pipe 14 of unloading station and chassis inner seal plate 15, and is same, and this figure is the profile that radially forms along central cooler; Fig. 5 is the backgauge ventilation fence 16 shown in Fig. 4 and the assembling shaft side figure of blast pipe chassis entrance 141.As shown in Figure 4 and Figure 5, backgauge ventilation fence 16 is made up of vertical screen 161 and spacing cross bar 162, and this structure has solved material to a certain extent with the ventilating opening blocking problem.But, in actual discharge process, have the phenomenon that gets stuck between the adjacent two vertical screens 161 and occur, and also exist the hidden danger that continues buildup after occurring getting stuck; Obviously, the wind area excessively in air channel will inevitably reduce, and then influences the cooling effect of mineral aggregate.
In view of this, demand urgently being optimized design, thereby in the process of dynamically discharging, fundamentally solve the problem that mineral aggregate enters blast pipe through the ventilating opening of chassis inner seal plate at existing blast pipe chassis entrance.
Summary of the invention
At above-mentioned defective, the technical problem that the present invention solves is, a kind of blast pipe chassis entrance of optimal design is provided, so that effectively solve the problem that mineral aggregate enters blast pipe through the ventilating opening of chassis inner seal plate in the process of dynamically discharging.On this basis, the present invention also provides a kind of central cooler with this blast pipe chassis entrance.
Blast pipe chassis entrance provided by the invention, one end are used for being communicated with blast pipe, the other end is used for is communicated with ventilating opening on the chassis inner seal plate; Some striker plates from top to bottom are successively set in the described blast pipe chassis entrance of nearly ventilation oral-lateral; Each striker plate is by the setting that tilts of ventilation oral-lateral to blast pipe side direction, and fixedlys connected with the tube wall of described blast pipe chassis entrance respectively in the left and right side outer of each striker plate; Angle between each striker plate and the horizontal plane is all greater than the angle of repose of mineral aggregate.
Preferably, the angle between each striker plate and the horizontal plane is 35 °~60 °.
Preferably, also comprising the stiffener of fixedlying connected with each striker plate, fixedlys connected with the tube wall of described blast pipe chassis entrance respectively in the upper and lower side outer of described stiffener.
Preferably, be respectively arranged with slot on described some striker plates, described stiffener be plugged in the slot of each striker plate and welding fixing.
Preferably, described stiffener is two and is symmetrical set.
Preferably, the upper and lower part tube wall of described blast pipe chassis entrance is by the setting that tilts of ventilation oral-lateral to blast pipe side direction.
Preferably, the bottom tube wall of described blast pipe chassis entrance and the angle between the horizontal plane are greater than the angle of repose of mineral aggregate.
Preferably, the bottom tube wall of described blast pipe chassis entrance and the angle between the horizontal plane are 35 °~55 °.
Preferably, the upper edge of each described striker plate all is lower than the tube wall upper edge of the described blast pipe chassis entrance of ventilation oral-lateral.
Central cooler provided by the invention comprises the ducting system with some blast pipes, and the chassis entrance of each blast pipe is communicated with ventilating opening on the chassis inner seal plate; The chassis entrance of described blast pipe adopts foregoing blast pipe chassis entrance.
Compared with prior art, the present invention sets gradually some striker plates from top to bottom in the described blast pipe chassis entrance of nearly ventilation oral-lateral; Each striker plate is by the setting that tilts of ventilation oral-lateral to blast pipe side direction, and simultaneously, the angle between each striker plate and the horizontal plane is all greater than the angle of repose of mineral aggregate; Like this, in the process of the dynamic discharging of chassis, mineral aggregate can skid off blast pipe chassis entrance along the striker plate of oblique setting, and fall to discharge chute in the lump with other mineral aggregates after falling in the blast pipe chassis entrance of ventilation oral-lateral.Structural design of the present invention is simple, reliable, efficiently solves the problem that mineral aggregate in the dynamic discharge process enters blast pipe through the ventilating opening of chassis inner seal plate.
In preferred version of the present invention, have additional the stiffener of fixedlying connected with each striker plate, fixedlying connected with the tube wall of described blast pipe chassis entrance respectively in the upper and lower side outer of this stiffener, guaranteeing the integral rigidity of each striker plate, thereby improves job stability.
In another preferred version of the present invention, be respectively arranged with slot on each striker plate, it is fixing that stiffener is plugged in the slot interior back welding of each striker plate; So design is easy to realize the assembling location, has improved the manufacturability of product greatly.
In another preferred version of the present invention, the upper and lower part tube wall of this blast pipe chassis entrance is by the setting that tilts of ventilation oral-lateral to blast pipe side direction, to adapt to the striker plate of oblique setting, can guarantee the wind area excessively of blast pipe chassis entrance, and reduce distinguished and admirable resistance, thereby improve the cooling effect of mineral aggregate.
Description of drawings
Fig. 1 is the overall structure schematic diagram of existing central cooler;
Fig. 2 is the A-A part sectioned view of central cooler shown in Figure 1;
Fig. 3 is the blast pipe of existing central cooler and the assembly relation schematic diagram between the chassis inner seal plate, and this figure is the profile that radially forms along central cooler;
Fig. 4 be existing central cooler at the blast pipe of unloading station and the assembly relation schematic diagram between the chassis inner seal plate, this figure is the radially profile of formation along central cooler;
Fig. 5 is the backgauge ventilation fence 16 shown in Fig. 4 and the assembling shaft side figure of blast pipe chassis entrance 141;
Fig. 6 is the shaft side figure of the chassis of blast pipe described in specific embodiment entrance;
Fig. 7 is the radial view to blast pipe chassis entrance from the chassis side of this blast pipe chassis entrance;
Fig. 8 is the B-B cutaway view of Fig. 7;
Fig. 9 be among Fig. 8 C to shown in the structural representation of striker plate.
Among Fig. 6 to Fig. 9:
Blast pipe chassis entrance 20, ring flange 21, chassis inner seal plate 22, striker plate 23, slot 231, stiffener 24.
The specific embodiment
Core of the present invention provides a kind of blast pipe chassis entrance of structure optimization, so that solve mineral aggregate through the problem that the ventilating opening of chassis inner seal plate enters blast pipe, has effectively avoided producing buildup and influencing the fault of ventilation at blast pipe chassis entrance.
Be without loss of generality, specify present embodiment below in conjunction with Figure of description.
The related herein noun of locality inside and outside with the central cooler center as benchmark definition, the related noun of locality is upper and lower, a left side and right side are so that the visual angle towards blast pipe chassis entrance is that benchmark defines from chassis.The use that should be appreciated that the nouns of locality such as described inside and outside, upper and lower, left and right does not limit the scope that the application asks for protection.
In the present embodiment, constitute the basic function parts of described central cooler and position annexation each other is same as the prior art, can be in the lump referring to Fig. 1 and Fig. 2.Particularly, each chassis and inboard breast board, outside breast board and two adjacent backbar side plates constitute several central cooler cooling work unit, circumferentially setting gradually along central cooler respectively; In the course of work, along the guide rail that is fixedly arranged on the support, chassis and backbar are finished operations such as cloth, cooling and discharging around the center steering motion of central cooler.Wherein, the operation of cooling mineral aggregate is by the supply air system specific implementation, and the chassis lower space that enters the cooling zone respectively by blast pipe, and pass grate plate and backbar side plate from bottom to top, thereby force to pass the mineral aggregate layer on grate plate and the backbar side plate, carry out discharging after sufficient heat exchange forms hot flue gas with mineral aggregate.
In addition, the central cooler of function of recovering waste heat is set, also needs to be provided with functional parts such as flue gas cover and flue gas cover sealing for needs.
Need to prove that the structure of aforementioned main function components and operation principle and prior art are basic identical, those skilled in the art can realize fully based on prior art, so this paper repeats no more.For elaborating the inventive point place of this programme, see also Fig. 6, this figure is the shaft side figure of described blast pipe chassis entrance.
As shown in Figure 6, an end of blast pipe chassis entrance 20 has and is used for the ring flange 21 that is connected with the blast pipe (not shown), and its other end and chassis inner seal plate 22 are connected; After the chassis inner seal plate 22 of blast pipe chassis entrance 20 finished with adjacent two brace summers assembling, promptly set up by the cold air duct of blast pipe to the chassis lower space.
Please in the lump referring to Fig. 7 and Fig. 8, wherein, Fig. 7 is the radial view towards blast pipe chassis entrance from chassis of this blast pipe chassis entrance, and Fig. 8 is the B-B cutaway view of Fig. 7.In the blast pipe chassis entrance 20 of nearly ventilation oral-lateral, be disposed with some striker plates 23 from top to bottom; Each striker plate 23 is by the setting that tilts of ventilation oral-lateral to blast pipe side direction, fixedlys connected with the tube wall of blast pipe chassis entrance 20 respectively in the left and right side outer of striker plate 23; And the angle α between each striker plate 23 and the horizontal plane is all greater than the angle of repose of mineral aggregate.In the process of the dynamic discharging of chassis, mineral aggregate can skid off blast pipe chassis entrance 20 along the striker plate 23 of oblique setting, thereby avoid the problem of generation buildup blast pipe chassis entrance 20 in after falling in the blast pipe chassis entrance 20 of ventilation oral-lateral.Obviously, for angle of repose was approximately mineral aggregate about 35 °, as long as the angle α between aforementioned striker plate 23 of control and the horizontal plane is greater than 35 ° of basic needs that promptly can satisfy no backup, that is, this angle α can select arbitrarily between 35 °~90 °.Those skilled in the art can determine the size of this angle α based on different central cooler designs, use needs all in the scope that the application asks for protection as long as satisfy.
Need to prove that the difference of this angle α and mineral aggregate angle of repose is big more, be beneficial to more and satisfy the basic need that does not produce buildup, yet along with the increase of angle α, the wind area excessively of this blast pipe chassis entrance 20 will reduce.Determine that through repetition test it is preferred plan that the angle α between each striker plate 23 and the horizontal plane is 35 °~60 °, promptly can satisfy the basic need that does not produce buildup, can alleviate the influence of crossing the wind area again to greatest extent for blast pipe chassis entrance 20.
In addition, the upper edge of each striker plate 23 in this programme all is lower than the tube wall upper edge of the blast pipe chassis entrance 20 of ventilation oral-lateral, is beneficial to the flowability of cold wind in the cold air duct.Certainly, the angle between striker plate 23 and the horizontal plane hour such as 35 °~45 °, can concern for the height and position between the tube wall upper edge of the upper edge of each striker plate 23 and the blast pipe chassis entrance 20 of ventilation oral-lateral and not do requirement.
In the dynamic process of chassis discharging, falling will be to the bigger active force of each striker plate 23 generation, for each striker plate 23, for avoiding striker plate 23 generation stress deformations to the mineral aggregate of blast pipe chassis entrance 20, its thickness of slab size is corresponding bigger, and the complete machine manufacturing cost is higher.For effectively controlling manufacturing cost, further, also have additional stiffener 24 in this programme, this stiffener 24 is fixedlyed connected respectively with each striker plate 23, and fixedlys connected with the tube wall of blast pipe chassis entrance 20 respectively in its upper and lower side outer.Particularly, weld behind this stiffener 24 and each striker plate 23 plug-in mounting and be fixed as one, be respectively arranged with slot 231 on the striker plate 23, so that stiffener 24 is plugged in the slot 231 of each striker plate 23, corresponding construction as shown in Figure 9, this figure be among Fig. 8 C to shown in the structural representation of striker plate 23.
Shown in the figure, in the blast pipe chassis entrance 20 of nearly ventilation oral-lateral, be disposed with three striker plates 23 from top to bottom, be symmetrically set with two stiffeners 24.Should be appreciated that according to different installing spaces the quantity of striker plate 23 and stiffener 24 is not limited to shown in the figure, use needs as long as satisfy.In addition, with the suitable ground of the cavity volume shape of the blast pipe chassis entrance 20 of nearly ventilation duct side, striker plate shown in Fig. 9 23 is trapezoidal shape, and obviously, the shape of this striker plate 23 can be adjusted according to the cavity volume shape of different blast pipe chassis entrances 20.
In addition, the upper and lower part tube wall of blast pipe chassis entrance 20 so that the arranged direction of the flow direction of cold wind and striker plate 23 is roughly the same, can effectively reduce distinguished and admirable resistance by the setting that tilts of ventilation oral-lateral to blast pipe side direction.
Wherein, the bottom tube wall of blast pipe chassis entrance 20 and the angle β between the horizontal plane are greater than the angle of repose of mineral aggregate.Equally, for angle of repose is approximately mineral aggregate about 35 °, determine that through repetition test angle β is 35 °~55 ° and is preferred plan, promptly the basic need that does not produce buildup can be satisfied, the influence of crossing the wind area can be alleviated again to greatest extent for blast pipe chassis entrance 20.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. blast pipe chassis entrance, one end are used for being communicated with blast pipe, the other end is used for is communicated with ventilating opening on the chassis inner seal plate, it is characterized in that some striker plates are successively set in the described blast pipe chassis entrance of nearly ventilation oral-lateral from top to bottom; Each striker plate is by the setting that tilts of ventilation oral-lateral to blast pipe side direction, and fixedlys connected with the tube wall of described blast pipe chassis entrance respectively in the left and right side outer of each striker plate; Angle between each striker plate and the horizontal plane is all greater than the angle of repose of mineral aggregate.
2. blast pipe chassis entrance according to claim 1 is characterized in that, the angle between each striker plate and the horizontal plane is 35 °~60 °.
3. blast pipe chassis entrance according to claim 1 and 2 is characterized in that, also comprises the stiffener of fixedlying connected with each striker plate, fixedlys connected with the tube wall of described blast pipe chassis entrance respectively in the upper and lower side outer of described stiffener.
4. blast pipe chassis entrance according to claim 3 is characterized in that, is respectively arranged with slot on described some striker plates, described stiffener be plugged in the slot of each striker plate and welding fixing.
5. blast pipe chassis entrance according to claim 4 is characterized in that described stiffener is two and is symmetrical set.
6. blast pipe chassis entrance according to claim 1 is characterized in that, the upper and lower part tube wall of described blast pipe chassis entrance is by the setting that tilts of ventilation oral-lateral to blast pipe side direction.
7. blast pipe chassis entrance according to claim 6 is characterized in that, the bottom tube wall of described blast pipe chassis entrance and the angle between the horizontal plane are greater than the angle of repose of mineral aggregate.
8. blast pipe chassis entrance according to claim 7 is characterized in that, the bottom tube wall of described blast pipe chassis entrance and the angle between the horizontal plane are 35 °~55 °.
9. according to claim 7 or 8 described blast pipe chassis entrances, it is characterized in that the upper edge of each described striker plate all is lower than the tube wall upper edge of the described blast pipe chassis entrance of ventilation oral-lateral.
10. central cooler, comprise ducting system with some blast pipes, the chassis entrance of each blast pipe is communicated with ventilating opening on the chassis inner seal plate, it is characterized in that, the chassis entrance of described blast pipe adopts each described blast pipe chassis entrance in the claim 1 to 9.
CN2010102060530A 2010-06-13 2010-06-13 Recirculation cooler and trolley inlet section of blast pipe thereof Active CN101846458B (en)

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CN2010102060530A CN101846458B (en) 2010-06-13 2010-06-13 Recirculation cooler and trolley inlet section of blast pipe thereof

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CN101846458B true CN101846458B (en) 2011-09-07

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CN115178089B (en) * 2022-08-11 2024-01-23 国能锅炉压力容器检验有限公司 Purifying and regenerating one-tower carbon-based catalyst flue gas treatment device

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JP2922077B2 (en) * 1993-03-02 1999-07-19 日本鋼管株式会社 Cooling device for high temperature powder
JPH08285466A (en) * 1995-04-07 1996-11-01 Nippon Steel Corp Sintering cake support stand and its cooling method
JP5138245B2 (en) * 2007-03-20 2013-02-06 三菱日立製鉄機械株式会社 Sinter cooling device
CN100567868C (en) * 2007-09-03 2009-12-09 中冶长天国际工程有限责任公司 A kind of improved rotary forced-air cooler
CN101118122B (en) * 2007-09-03 2010-04-14 中冶长天国际工程有限责任公司 Block-resistant material air duct sealing plate used for ring cold machine

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