CN203904374U - Structure for simultaneously grouting and maintaining cold and hot surfaces of cooling wall of blast furnace hearth - Google Patents
Structure for simultaneously grouting and maintaining cold and hot surfaces of cooling wall of blast furnace hearth Download PDFInfo
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- CN203904374U CN203904374U CN201420344581.6U CN201420344581U CN203904374U CN 203904374 U CN203904374 U CN 203904374U CN 201420344581 U CN201420344581 U CN 201420344581U CN 203904374 U CN203904374 U CN 203904374U
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- mud jacking
- outer tube
- hot surface
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Abstract
本实用新型为一种高炉炉缸冷却壁冷热面同时压浆维护结构，在炉缸圆周及象脚区域的外壳上呈间隔地固定设置多个压浆接口；各个压浆接口向炉缸的冷却壁内侧延伸设有一阶梯型盲孔，阶梯型盲孔由贯穿外壳的第一孔道和贯穿冷却壁的第二孔道构成，第一孔道的孔径大于第二孔道的孔径；各个压浆接口中能拆卸地连接一冷热面压浆装置；该高炉炉缸冷却壁冷热面同时压浆维护结构，通过在炉缸圆周及象脚区域布置预留多个压浆孔和压浆接口，利用冷热面压浆装置可实现炉缸冷却壁冷热面同时压浆维护，全方位的封堵存在的煤气通道，从而维持炉缸良好的传热体系，改善炉缸冷却效果，降低耐火材料和冷却设备的工作温度，达到延长炉缸使用寿命的目的。
The utility model relates to a grouting maintenance structure for the cold and hot surfaces of the cooling wall of a blast furnace hearth at the same time. A plurality of grouting interfaces are fixedly arranged at intervals on the circumference of the hearth and the shell of the elephant foot area; A stepped blind hole is extended on the inner side of the cooling wall. The stepped blind hole is composed of a first hole through the shell and a second hole through the cooling wall. The diameter of the first hole is larger than that of the second hole; each grouting interface can A hot and cold surface grouting device is detachably connected; the cooling and hot surfaces of the blast furnace hearth cooling wall are simultaneously grouted to maintain the structure. The hot surface grouting device can realize simultaneous grouting maintenance on the cold and hot surfaces of the hearth cooling wall, and block the existing gas channels in all directions, so as to maintain a good heat transfer system in the hearth, improve the cooling effect of the hearth, reduce refractory materials and cooling The working temperature of the equipment can achieve the purpose of prolonging the service life of the hearth.
Description
Technical field
The utility model is the maintenance technology about a kind of blast furnace hearth, relates in particular to a kind of blast furnace hearth cooling stave cold and hot surface mud jacking enclosed structure simultaneously.
Background technology
The longevity at cupola well position is the restricted link of blast furnace longevity.The principal element that affects cupola well position longevity comprises project organization, refractory materials, construction quality and Operation and Maintenance etc.; Blast furnace is after going into operation, and except Operation and Maintenance factor, other factors can not change, therefore, ensures the smooth realization of generation furnace service life, and the daily furnace cylinder maintenance work of blast furnace seems particularly important.
Blast furnace is produced and is often occurred the non-aggressive temperature rising of cupola well sidewall phenomenon, the theoretical analysis and practice summary are found: most situations are because between basque and cooling stave or produced gas flue between cooling stave and furnace shell, due to the regional area producing due to flowing of heating gas heats.The more serious harm of gas flue is to have formed air gap thermal resistance, causes cupola well circumference heat transfer circuit in the radial direction to occur " opening circuit " phenomenon, hinders the derivation of cupola well heat, weakens the effect of cupola well cooling system.
Consult related data known: the thermal resistance that produces 1mm air gap is 30 times of cupola well cast-iron cooling wall (thick by 160mm) thermal resistance, it is 6 times that charcoal element is smash the bed of material (by 100mm) thermal resistance, it is 0.7 times of cupola well brick fuel (by ultramicropore brick fuel material, thickness 1100mm meter) thermal resistance.As can be seen here, once produce air gap, will greatly increase the thermal resistance of cylinder heat transfer system, hinder the derivation of cupola well heat, reduce the cooling performance of cupola well.If the gas flue long-term existence of cupola well inside and can not timely and effectively solving, makes the working temperature of cupola well constantly raise, cause the anti-molten iron erosional competency of brick fuel to weaken, erosive velocity aggravation, finally shortens work-ing life of cupola well.
Thus, the inventor relies on experience and the practice of being engaged in for many years relevant industries, proposes a kind of blast furnace hearth cooling stave cold and hot surface mud jacking enclosed structure simultaneously, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of blast furnace hearth cooling stave cold and hot surface mud jacking enclosed structure simultaneously, at cupola well circumference and resemble reserved mud jacking hole, pin region and interface, utilize cold and hot surface squeezing unit to carry out the mud jacking maintenance simultaneously of cupola well cooling stave cold and hot surface, the gas flue that comprehensive shutoff exists, to maintain the good heat transfer system in cupola well region, improve cooling performance, extend the cupola well life-span.
The purpose of this utility model is achieved in that a kind of blast furnace hearth cooling stave cold and hot surface mud jacking enclosed structure simultaneously, at cupola well circumference and resemble and be compartment of terrain on the shell in pin region and be fixedly installed multiple mud jacking interfaces; Described each mud jacking interface extends and is provided with a notch cuttype blind hole to the cooling stave inner side of cupola well, and described notch cuttype blind hole is made up of with the second duct of running through cooling stave the first duct of running through shell, and the aperture in described the first duct is greater than the aperture in the second duct; In described each mud jacking interface, connect removedly a cold and hot surface squeezing unit; Described cold and hot surface squeezing unit comprises that an outer tube and is arranged in the inner tube in outer tube, forms the flow-guiding channel of ring section between described inner tube and outer tube, and described outer tube front end is inserted in the first duct, and the front end of described inner tube is inserted in the second duct; Described outer tube back-end is fixed with a sealing nut, and described inner tube rear end is run through sealing nut and formed inner tube coupling end; Described outer tube wall sealing is provided with a pipe connecting, and the other end of this pipe connecting forms outer tube coupling end.
In a preferred embodiments of the present utility model, described each mud jacking interface is provided with the first joint flange; The outer tube of described cold and hot surface squeezing unit is provided with the second joint flange being connected with the first joint flange.
In a preferred embodiments of the present utility model, the tube wall of described outer tube is provided with to inner tube and pushes up the push bolt of establishing.
In a preferred embodiments of the present utility model, described inner tube coupling end and outer tube coupling end are respectively equipped with the 3rd joint flange and the 4th joint flange.
In a preferred embodiments of the present utility model, on described each mud jacking interface, be removably provided with a seal plug.
From the above mentioned, blast furnace hearth cooling stave cold and hot surface of the present utility model is mud jacking enclosed structure simultaneously, by being reserved in cupola well circumference and resembling mud jacking hole and the mud jacking interface in pin region, can directly carry out the grouting of cooling stave cold and hot surface, without carrying out extra drilling operation; Will be on every cooling stave of cupola well circumference equal reserved place's interfaces, described mud jacking interface, in the levels of cupola well layouts that rationally misplace, can be realized the omnibearing grouting maintenance of cupola well; Can realize simultaneously the gas flue of cooling stave hot side and huyashi-chuuka (cold chinese-style noodles) existence is carried out to shutoff, after hot side mud jacking has operated, with carrying out huyashi-chuuka (cold chinese-style noodles) mud jacking, avoid perforate again on furnace shell; The utility model is simple in structure, takes up room little, and operation and installation are convenient, detachably reuse, and are convenient to be arranged in cupola well region.The utility model has effectively solved cupola well sidewall and has occurred non-aggressive temperature rising problem, can maintain the heat transfer that cupola well is good, cooling system, has the effect of protection furnace shell, is conducive to extend cupola well work-ing life.
Brief description of the drawings
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be the position schematic diagram in blast furnace hearth mud jacking hole in the utility model;
Fig. 2: be the deployed configuration schematic diagram of Fig. 1;
Fig. 3: for connecting the structural representation of cold and hot surface squeezing unit in the utility model mud jacking interface;
Fig. 4: for not connecting the structural representation of cold and hot surface squeezing unit in the utility model mud jacking interface;
Fig. 5: be the structural representation of cold and hot surface squeezing unit in the utility model;
Fig. 6: for connecting the structural representation of seal plug on the utility model mud jacking interface;
Embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast brief description of the drawings embodiment of the present utility model.
As shown in Figure 1 and Figure 2, the utility model proposes a kind of blast furnace hearth cooling stave cold and hot surface mud jacking enclosed structure simultaneously, at the circumference of cupola well 9 and resemble and be compartment of terrain on the shell 91 of pin region (furnace bottom and cupola well intersection) and be fixedly installed multiple mud jacking interfaces 1; Described each mud jacking interface 1 extends and is provided with a notch cuttype blind hole (that is: mud jacking hole) 2 to cooling stave 92 inner sides of cupola well, as shown in Figure 3, Figure 4, described notch cuttype blind hole 2 is made up of with the second duct 22 of running through cooling stave 92 the first duct 21 of running through shell 91, and the aperture in described the first duct 21 is greater than the aperture in the second duct 22; In described each mud jacking interface 1, connect removedly a cold and hot surface squeezing unit 3; As shown in Figure 3 and Figure 5, described cold and hot surface squeezing unit 3 comprises that an outer tube (huyashi-chuuka (cold chinese-style noodles) madjack pipe) 31 and is arranged in the inner tube (hot side madjack pipe) 32 in outer tube, between described inner tube 32 and outer tube 31, form the flow-guiding channel 33 of ring section, described outer tube 31 front ends are inserted in the first duct 21, and the front end of described inner tube 32 is inserted in the second duct 22; Described outer tube back-end 31 is fixed with a sealing nut 34, and described inner tube 32 rear ends are run through sealing nut 34 and formed inner tube coupling end 321; Described outer tube 31 sidewall sealings are provided with a pipe connecting 35, and the other end of this pipe connecting 35 forms outer tube coupling end 351.Described each mud jacking interface 1 is provided with the first joint flange 11; The outer tube 31 of described cold and hot surface squeezing unit is provided with the second joint flange 311 being connected with the first joint flange.The tube wall of described outer tube 31 is provided with to inner tube 32 and pushes up the push bolt 36 of establishing.Described inner tube coupling end 321 and outer tube coupling end 351 are respectively equipped with the 3rd joint flange 3211 and the 4th joint flange 3511.In the present embodiment, as shown in Figure 6, on described each mud jacking interface 1, can also dismantle and be provided with a seal plug 4.
In the present embodiment, by at cupola well circumference and resemble pin region and arrange reserved multiple mud jacking hole and mud jacking interface, utilize cold and hot surface squeezing unit can realize the mud jacking maintenance simultaneously of cupola well cooling stave cold and hot surface, the gas flue that omnibearing shutoff exists, thereby maintain the heat transfer system that cupola well is good, improve cupola well cooling performance, reduce the working temperature of refractory materials and cooling apparatus, reach and extend the cupola well object in work-ing life.This cold and hot surface squeezing unit is easy for installation, takes up room little, detachably reuses, and is a kind of portable effective furnace cylinder maintenance device.
After cupola well cooling stave installs, each mud jacking interface 1 and the furnace shell at each reserved notch cuttype blind hole 2 outer end places can be welded, then seal plug 4 is linked together by bolt and the first joint flange 11, realize the sealing to mud jacking hole.When cupola well is normally produced, seal plug 4 is mounted on mud jacking interface 1, thus, eliminates the disadvantageous effect that perforate herein brings.
When cupola well need to be in the milk while safeguarding, in advance outer tube 31 (huyashi-chuuka (cold chinese-style noodles) madjack pipe) and inner tube 32 (hot side madjack pipe) are fitted together by sealing nut 34, then unload the seal plug 4 on mud jacking interface 1, install cold and hot surface squeezing unit 3 and be connected and carry out mud jacking with fluid-conveying pipe road (not shown).When after cold and hot surface mud jacking EO, more again load onto seal plug 4.The cold and hot surface squeezing unit 3 of pulling down is cleared up, prepared mud jacking operation next time or warehouse-in and preserve.
Concrete cupola well mud jacking attended operation is as follows: the seal plug 4 of first dismantling; Sealing nut 34 and pad (not shown) are set in inner tube 32, pad is placed in sealing nut 34, be inserted in the lump in outer tube 31, outer tube 31 rearward end are with outside screw, with be enclosed within sealing nut 34 in inner tube 32 and pad and be connected and tighten, thereby realize the sealing to this place.Adjust outer tube 31 push bolt 36 above, to compress inner tube 32, prevent that inner tube is moved within the outer tube.The second joint flange 311 on outer tube 31 is bolted with the first joint flange 11 on mud jacking interface.Outer tube 31 the inners extend furnace shell 91 inner sides (the huyashi-chuuka (cold chinese-style noodles) position of cooling stave), and the inner of inner tube 32 extends the inner side (the hot side position of cooling stave) of cooling stave 92.Finally, fluid-conveying pipe road (including conductive paste material conveying tube road and heat-insulating slurry transfer line, not shown) is connected with inner tube coupling end 321 and outer tube coupling end 351 respectively, carries out the cold and hot surface mud jacking of cooling stave simultaneously.Mud jacking is complete after slurry solidifies, and pulls down above-mentioned cold and hot surface squeezing unit 3, reloads seal plug 4.After above-mentioned cold and hot surface squeezing unit 3 is cleared up, can carry out again mud jacking operation or the warehouse-in at next position and preserve.
As shown in Figure 3, blast furnace hearth cooling stave cold and hot surface of the present utility model is mud jacking enclosed structure simultaneously, the one, heat-conducting type slurry is pressed in the gap between cooling stave 92 and brick fuel 95, together with smashing material 94 with charcoal element, fill up gap, the gas flue that this place of shutoff exists, not only can realize cooling stave, charcoal element is smash material 94 and brick fuel 95 threes' close contact, maintain the heat transfer system that cupola well is good, improve cupola well cooling performance, also solved this place heating effect bringing of collaborating simultaneously, thereby reduce the working temperature of cupola well refractory materials and cooling apparatus, reach and extend the cupola well object in work-ing life, the 2nd, heat insulation (thermal insulation) type slurry is pressed in the gap 93 between cooling stave 92 and furnace shell 91, the gas flue at this place of shutoff, solves the heating effect of collaborating and bringing, and reduces local temperature, protection furnace shell.
From the above mentioned, blast furnace hearth cooling stave cold and hot surface of the present utility model is mud jacking enclosed structure simultaneously, by being reserved in cupola well circumference and resembling mud jacking hole and the mud jacking interface in pin region, can directly carry out the grouting of cooling stave cold and hot surface, without carrying out extra drilling operation; Will be on every cooling stave of cupola well circumference 92 equal reserved place's interfaces, described mud jacking interface, in the levels of cupola well layouts that rationally misplace, can be realized the omnibearing grouting maintenance of cupola well; Can realize simultaneously the gas flue of cooling stave hot side and huyashi-chuuka (cold chinese-style noodles) existence is carried out to shutoff, after hot side mud jacking has operated, with carrying out huyashi-chuuka (cold chinese-style noodles) mud jacking, avoid perforate again on furnace shell; The utility model is simple in structure, takes up room little, and operation and installation are convenient, detachably reuse, and are convenient to be arranged in cupola well region.The utility model has effectively solved cupola well sidewall and has occurred non-aggressive temperature rising problem, can maintain the heat transfer that cupola well is good, cooling system, has the effect of protection furnace shell, is conducive to extend cupola well work-ing life.
The foregoing is only the schematic embodiment of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the amendment under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.
Claims (5)
1. a simultaneously mud jacking enclosed structure of blast furnace hearth cooling stave cold and hot surface, is characterized in that: at cupola well circumference and resemble and be compartment of terrain on the shell in pin region and be fixedly installed multiple mud jacking interfaces; Described each mud jacking interface extends and is provided with a notch cuttype blind hole to the cooling stave inner side of cupola well, and described notch cuttype blind hole is made up of with the second duct of running through cooling stave the first duct of running through shell, and the aperture in described the first duct is greater than the aperture in the second duct; In described each mud jacking interface, connect removedly a cold and hot surface squeezing unit; Described cold and hot surface squeezing unit comprises that an outer tube and is arranged in the inner tube in outer tube, forms the flow-guiding channel of ring section between described inner tube and outer tube, and described outer tube front end is inserted in the first duct, and the front end of described inner tube is inserted in the second duct; Described outer tube back-end is fixed with a sealing nut, and described inner tube rear end is run through sealing nut and formed inner tube coupling end; Described outer tube wall sealing is provided with a pipe connecting, and the other end of this pipe connecting forms outer tube coupling end.
2. blast furnace hearth cooling stave cold and hot surface as claimed in claim 1 mud jacking enclosed structure simultaneously, is characterized in that: described each mud jacking interface is provided with the first joint flange; The outer tube of described cold and hot surface squeezing unit is provided with the second joint flange being connected with the first joint flange.
3. blast furnace hearth cooling stave cold and hot surface as claimed in claim 1 mud jacking enclosed structure simultaneously, is characterized in that: the tube wall of described outer tube is provided with to inner tube and pushes up the push bolt of establishing.
4. blast furnace hearth cooling stave cold and hot surface as claimed in claim 1 mud jacking enclosed structure simultaneously, is characterized in that: described inner tube coupling end and outer tube coupling end are respectively equipped with the 3rd joint flange and the 4th joint flange.
5. blast furnace hearth cooling stave cold and hot surface as claimed in claim 1 mud jacking enclosed structure simultaneously, is characterized in that: on described each mud jacking interface, be removably provided with a seal plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344581.6U CN203904374U (en) | 2014-06-25 | 2014-06-25 | Structure for simultaneously grouting and maintaining cold and hot surfaces of cooling wall of blast furnace hearth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344581.6U CN203904374U (en) | 2014-06-25 | 2014-06-25 | Structure for simultaneously grouting and maintaining cold and hot surfaces of cooling wall of blast furnace hearth |
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| Publication Number | Publication Date |
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| CN203904374U true CN203904374U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420344581.6U Expired - Lifetime CN203904374U (en) | 2014-06-25 | 2014-06-25 | Structure for simultaneously grouting and maintaining cold and hot surfaces of cooling wall of blast furnace hearth |
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| CN (1) | CN203904374U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863600A (en) * | 2016-06-13 | 2016-08-17 | 山东鲁潍机械厂 | Temperature rise protection structure for underground coal gasification exhaust pipeline and construction process of temperature rise protection structure |
| CN110527759A (en) * | 2018-06-22 | 2019-12-03 | 广东韶钢松山股份有限公司 | A method of prevent blast furnace taphole from leaking coal gas |
-
2014
- 2014-06-25 CN CN201420344581.6U patent/CN203904374U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863600A (en) * | 2016-06-13 | 2016-08-17 | 山东鲁潍机械厂 | Temperature rise protection structure for underground coal gasification exhaust pipeline and construction process of temperature rise protection structure |
| CN105863600B (en) * | 2016-06-13 | 2018-05-29 | 山东鲁潍机械厂 | A kind of gasifying underground coal discharge duct temperature rises protection structure and construction technology |
| CN110527759A (en) * | 2018-06-22 | 2019-12-03 | 广东韶钢松山股份有限公司 | A method of prevent blast furnace taphole from leaking coal gas |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |
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| CX01 | Expiry of patent term |