CN113025770A - Blast furnace hot blast stove shell assembling device and construction method thereof - Google Patents
Blast furnace hot blast stove shell assembling device and construction method thereof Download PDFInfo
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- CN113025770A CN113025770A CN202110453257.2A CN202110453257A CN113025770A CN 113025770 A CN113025770 A CN 113025770A CN 202110453257 A CN202110453257 A CN 202110453257A CN 113025770 A CN113025770 A CN 113025770A
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- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
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Abstract
The invention relates to a furnace shell assembling device of a blast furnace hot blast stove, which comprises a platform base, wherein each arc-shaped furnace shell plate is arranged on the outer edge of the platform base, the inner side of each arc-shaped furnace shell plate is provided with a furnace shell positioner, each furnace shell positioner comprises a plurality of fixers, the fixers are fixedly connected with an upper clamping groove fixedly connected to the upper edge of the furnace shell plate, and a lower clamping groove fixedly connected to the lower edge of the furnace shell plate; the inner side of the upper clamping groove is connected with an oblique telescopic bolt; the inner side of the lower clamping groove is connected with a horizontal telescopic screw rod; the other ends of the oblique telescopic screw rod and the horizontal telescopic screw rod are connected with the fixer; the invention also provides a construction method for splicing the furnace shell by the blast furnace hot blast furnace shell splicing device, wherein a fixer is fixedly connected to the platform base, the furnace shell plate is placed on the platform base according to a positioning line, the furnace shell positioner is installed, and the lower opening and the upper opening of the furnace shell are supported to the radius meeting the drawing requirements by adjusting the lengths of the horizontal telescopic screw rod and the inclined telescopic screw rod.
Description
Technical Field
The invention belongs to the technical field of hot blast stove construction, and particularly relates to a blast furnace hot blast stove shell assembling device and a construction method thereof.
Background
Along with the development of the metallurgical industry in China, the volumes and the number of iron-making blast furnaces and hot blast stoves are continuously increased, and the building concept of low carbon, energy conservation, environmental protection is increasingly emphasized in China. The hot blast stove is large in size, and is constructed in a sectional installation mode, and each section of furnace shell is formed by assembling a plurality of arc-shaped furnace tiles. In the prior art, the furnace tiles are assembled on the assembly platform, positioning pieces need to be welded on the arc-shaped furnace tiles before assembly, and the positioning pieces welded on the surface of the furnace shell need to be cut off after the furnace tiles are butted and fixed according to positioning circles on the assembly platform. The furnace shell assembly in the prior art has the defects that: 1. the welding positioning piece is connected with the furnace tile, so that the operation is relatively complex and labor and time are consumed; 2. after the positioning piece is cut off, the surface of the furnace shell is damaged and needs to be repaired. 3. The roundness of the furnace shell is not sufficient.
Disclosure of Invention
The present invention is directed to solve the above problems, and therefore, to provide an adjusting device for assembling a furnace shell while reducing welding of unnecessary parts and ensuring that a furnace shell base metal is not damaged.
The invention solves the problems and adopts the technical scheme that:
a furnace shell assembling device for a blast furnace hot blast stove comprises a platform base, wherein the geometric center of the platform base is set as a furnace shell assembling reference central point; the outer edge of the platform base is provided with an assembling positioning circle arranged according to the diameter of the assembling furnace shell, each arc-shaped furnace shell plate is arranged on the fixed assembling positioning circle, the inner side of each arc-shaped furnace shell plate is provided with a furnace shell positioner, each furnace shell positioner comprises a fixer, and the distance from each fixer to a reference central point is equal; the furnace shell positioner also comprises an upper clamping groove fixedly connected to the upper edge of the furnace shell plate and a lower clamping groove fixedly connected to the lower edge of the furnace shell plate; ear plates are arranged on the inner sides of the upper clamping groove and the lower clamping groove; the upper clamping groove ear plate is connected with an oblique telescopic bolt; the lower clamping groove ear plate is connected with the horizontal telescopic screw rod; the other ends of the oblique telescopic screw rod and the horizontal telescopic screw rod are connected with the fixer.
Compared with the prior art, the invention adopting the technical scheme has the beneficial effects that:
firstly, the upper end and the lower end of the furnace shell plate are fixed through the U-shaped clamping grooves, and the furnace shell parent metal is not damaged. Compared with the supporting structure and the positioning structure in the prior art, the supporting structure of the assembling positioner has few node parts, is convenient to install and correct, and reduces construction errors.
Preferably, the furnace shell assembling device for the blast furnace hot blast stove further comprises the following technical scheme:
the upper clamping groove is a U-shaped clamping groove with a downward opening, a jacking bolt is arranged on a baffle plate on at least one side of the upper clamping groove, and the jacking bolt penetrates through the end part of the lower clamping groove and is connected with the pressing plate; the lower clamping groove is a U-shaped clamping groove with an upward opening, and grooves are formed in the positions where the upper clamping groove and the lower clamping groove of the platform base are arranged. In the scheme, the furnace shell is effectively fixed by the upper clamping groove structure, so that the upper clamping groove is prevented from falling off; the groove on the platform base effectively positions the lower clamping groove and avoids sliding when supporting.
The slant telescopic screw and the horizontal telescopic screw comprise threaded sleeves, lead screws are respectively installed at two ends of each threaded sleeve, the thread directions of the two lead screws are opposite, and the threaded sleeves are provided with rotating handles. The structure not only protects the strength of the supporting rod, but also realizes the length adjustment and has large range adjustment.
The construction method for splicing the furnace shells by adopting the furnace shell splicing device of the blast furnace hot blast furnace comprises the following specific operation steps:
firstly, determining the central point of an assembled furnace shell on a platform base, and determining the positions of concentric circles of an upper opening and a lower opening of the furnace shell; a fixer positioning circle is drawn according to the determined furnace shell center point as the circle center; and calculating the lengths of the horizontal telescopic screw and the inclined telescopic screw according to the radius of the furnace shell.
And secondly, hoisting each arc-shaped furnace shell plate to the platform base, installing a lower clamping groove at the bottom of the furnace shell plate, and fixing an upper clamping groove at the top of the furnace shell plate.
Thirdly, roughly adjusting the lengths of the horizontal telescopic screw rod and the inclined telescopic screw rod; the upper end of the oblique telescopic screw rod is connected with the upper clamping groove, and the lower end of the oblique telescopic screw rod is connected with the fixer; one end of the horizontal telescopic screw rod is connected with the lower clamping groove, and the other end of the horizontal telescopic screw rod is connected with the fixer.
And fourthly, welding the fixator on a fixator positioning circle drawn on the platform base.
Fifthly, finely adjusting the length of the horizontal telescopic screw according to the calculated length in the first step, and accurately supporting the lower opening of the furnace shell to a radius position required by a drawing; and finely adjusting the inclined telescopic screw rod to support the upper opening of the furnace shell to the radius position required by the drawing.
Compared with the prior art, the construction method has the beneficial effects that:
1. convenient and fast, alignment is efficient, has shortened the alignment time that the butt joint was assembled to the stove outer covering greatly. 2. The furnace shell parent metal is prevented from being damaged as much as possible. 3. The working efficiency of large-scale hoisting machinery is improved, and the cost is reduced. 4. The installation is more time-saving and labor-saving, and more cost is saved.
In the operation, in the fifth step of adjusting the upper opening of the furnace shell plate, the thin iron wire rope is placed at the diameter position of the upper opening of the blast furnace, and the measurement is carried out at any time through the steel tape, so that the basis is provided for the adjustment.
Drawings
FIG. 1 is a schematic view of a positioning line drawn on a platform base in the construction of the present invention;
FIG. 2 is a schematic view of the arc furnace shell plate moving onto the platform base in the construction of the present invention;
FIG. 3 is a schematic view of a welding fixture on a platform base in the construction of the present invention;
FIG. 4 is a schematic view of the mounting structure of the furnace shell assembling device of the blast furnace hot blast stove in the construction of the present invention;
FIG. 5 is a structural view of a furnace shell assembling device of a blast furnace hot blast stove in the invention;
FIG. 6 is a schematic view of the internal structure of the horizontal retractable screw or the oblique retractable screw according to the present invention;
FIG. 7 is a schematic view of an upper card slot structure of the present invention;
FIG. 8 is a schematic view of a connection structure of an upper clamping groove bolt and a pressing plate according to the present invention;
fig. 9 is a schematic view of a lower slot fixing structure according to the present invention.
Description of reference numerals: the furnace shell positioning device comprises a platform base 1, an assembling positioning circle 2, a furnace shell positioner 3, a furnace shell plate 4, a fixer 5, a horizontal telescopic screw 6, a threaded sleeve 6-1, a screw rod 6-2, a rotating handle 6-3, a lower clamping groove 7, an oblique telescopic screw 8, an upper clamping groove 9, a puller bolt 9-1, a pressing plate 9-2, a rubber pad 9-3, a protruding shaft 9-4, a bearing groove 9-5, an ear plate 10, a groove 11, a supporting plate 12 and a clamping ridge 13.
Detailed Description
The invention will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the invention.
Referring to fig. 5 to 6, the furnace shell assembling device of the blast furnace hot blast stove provided by the invention comprises a platform base 1, wherein the geometric center of the platform base 1 is set as a furnace shell assembling reference central point; the outer edge of the platform base 1 is provided with an assembling positioning circle 2 arranged according to the diameter of an assembling furnace shell, each arc-shaped furnace shell plate 4 is arranged on the assembling positioning circle 2, the inner side of each arc-shaped furnace shell plate 4 is provided with a furnace shell positioner 3, each furnace shell positioner 3 comprises a fixer 5, and the distance from each fixer 5 to a reference central point is equal; the furnace shell positioner 3 also comprises an upper clamping groove 9 fixedly connected to the upper edge of the furnace shell plate and a lower clamping groove 7 fixedly connected to the lower edge of the furnace shell plate 4; ear plates 10 are arranged on the inner sides of the upper clamping groove 9 and the lower clamping groove 7; the ear plate 10 of the upper clamping groove 9 is connected with the oblique telescopic bolt 8; the ear plate 10 of the lower clamping groove 7 is connected with the horizontal telescopic screw 6; the other ends of the oblique telescopic screw 8 and the horizontal telescopic screw 6 are connected with the fixer 5.
As shown in fig. 7 and 8, in the above device, the upper clamping groove 9 is a U-shaped clamping groove with a downward opening, a tightening bolt 9-1 is arranged on a baffle plate on at least one side of the upper clamping groove 9, and the tightening bolt 9-1 penetrates through the end part of the lower clamping groove 9 to be connected with the pressing plate 9-2. The pressing plate 9-2 presses the surface of the furnace shell plate 4 through the support of the puller bolt 9-1, and the upper clamping groove 9 is firmly fixed on the upper edge of the furnace shell plate 4, so that the upper clamping groove is prevented from dropping off. Furthermore, a rubber pad 9-3 is arranged on the side surface of the pressing plate, which is attached to the furnace shell plate 4, and a protruding shaft 9-4 is arranged on the other side surface; the top surface of the jacking bolt 9-1 is provided with a bearing groove 9-5 matched with the protruding shaft 9-4, and according to the scheme, when the bolt rotates, the pressure plate cannot rotate together, so that the surface of the furnace shell plate 4 is prevented from being abraded.
As shown in fig. 5 and 9, in the above device, the lower card slot 7 is a U-shaped card slot with an upward opening; a groove 11 is arranged on the platform base 1 corresponding to the lower clamping groove 7. The lower clamping groove cannot be separated after the furnace shell plate is placed into the lower clamping groove, but the furnace shell plate can slide when the roundness support of the furnace shell is adjusted if the furnace shell plate is not correspondingly fixed. The problem can be solved by welding the protruded baffle plates on the platform base, but more bulges can be generated on the surface of the assembled platform, so that the construction safety is not good. Therefore, the structure with the grooves arranged on the platform base is provided, the lower clamping groove is placed in the groove 11, the lower clamping groove 7 is effectively positioned, and slippage is avoided when the platform is supported. Aiming at the condition that the platform base 1 is generally made of H-shaped steel, and a web plate cannot stably support a lower clamping groove after the H-shaped steel is subjected to grooving, the groove 11 designed by the invention has the structure that: h shaped steel upper portion is provided with recess 11, and this recess 11 shows square through hole on the top flange board, shows the notch on the web, and this scheme sets up backup pad 12 in the web both sides, both ends and flange board rigid coupling about backup pad 12, and centre gripping arris 13 is established to the backup pad inboard. The clamping ribs 13 are matched, and a clamping groove can be formed in the lower clamping groove, so that a fixing structure is formed, wherein the bottom of the lower clamping groove 7 is supported by a web plate, and two sides of the lower clamping groove 7 are supported by a supporting plate.
Referring to the attached drawing 6, the oblique telescopic screw 8 and the horizontal telescopic screw 6 comprise a threaded sleeve 6-1, two ends of the threaded sleeve 6-1 are respectively provided with a screw rod 6-2, the thread directions of the two screw rods 6-2 are opposite, and the threaded sleeve 6-1 is provided with a rotating handle 6-3. The structure not only protects the strength of the supporting rod, but also realizes the length adjustment and has large range adjustment.
The construction method for splicing the furnace shells by adopting the furnace shell splicing device of the blast furnace hot blast furnace comprises the following specific operation steps:
firstly, referring to fig. 1, determining the central point of an assembled furnace shell on a platform base 1, and determining the positions of concentric circles of an upper opening and a lower opening of the furnace shell; a fixer positioning circle 3 is drawn according to the determined furnace shell center point as the circle center; and calculating the lengths of the horizontal telescopic screw 6 and the inclined telescopic screw 8 according to the radius of the furnace shell.
And secondly, hoisting each arc furnace shell plate 4 to the platform base 1, installing a lower clamping groove 7 at the bottom of the furnace shell plate 4, and fixing an upper clamping groove 9 at the top of the furnace shell plate 4.
Thirdly, roughly adjusting the lengths of the horizontal telescopic screw 6 and the oblique telescopic screw 8; the upper end of the oblique telescopic screw 8 is connected with the upper clamping groove 9, and the lower end is connected with the fixer 5; one end of a horizontal telescopic screw rod 6 is connected with the lower clamping groove 7, and the other end of the horizontal telescopic screw rod is connected with the fixer 5.
Fourthly, referring to fig. 2 and 3, the fixer 5 is welded on a fixer positioning circle 3 drawn on the platform base 1.
Fifthly, with reference to the attached figure 4, finely adjusting the length of the horizontal telescopic screw 6 according to the calculated length in the first step, and accurately supporting the lower opening of the furnace shell to the radius position required by the drawing; and finely adjusting the inclined telescopic screw 8 to support the upper opening of the furnace shell to the radius position required by the drawing.
In the fifth step of adjusting the upper opening of the furnace shell plate, a thin iron wire rope is placed at the diameter position of the upper opening of the blast furnace, and measurement is carried out at any time through a steel tape, so that a basis is provided for adjustment.
The invention has the beneficial effects that: 1. convenient and fast, alignment is efficient, has shortened the alignment time that the butt joint was assembled to the stove outer covering greatly. 2. The furnace shell parent metal is prevented from being damaged as much as possible. 3. The working efficiency of large-scale hoisting machinery is improved, and the cost is reduced. 4. The installation is more time-saving and labor-saving, and more cost is saved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.
Claims (5)
1. A furnace shell assembling device for a blast furnace hot blast stove comprises a platform base, wherein the geometric center of the platform base is set as a furnace shell assembling reference central point; platform base outer fringe is equipped with the location circle of assembling according to assembling stove outer covering diameter setting, and each arc stove outer covering board sets up on deciding the location circle of assembling, its characterized in that: a furnace shell positioner is arranged on the inner side of each arc-shaped furnace shell plate and comprises fixers, and the distances from the fixers to a reference central point are equal; the furnace shell positioner also comprises an upper clamping groove fixedly connected to the upper edge of the furnace shell plate and a lower clamping groove fixedly connected to the lower edge of the furnace shell plate; ear plates are arranged on the inner sides of the upper clamping groove and the lower clamping groove; the upper clamping groove ear plate is connected with an oblique telescopic bolt; the lower clamping groove ear plate is connected with the horizontal telescopic screw rod; the other ends of the oblique telescopic screw rod and the horizontal telescopic screw rod are connected with the fixer.
2. The furnace shell assembling device for the blast furnace hot blast stove according to claim 1, wherein: the upper clamping groove is a U-shaped clamping groove with a downward opening, a jacking bolt is arranged on a baffle plate on at least one side of the upper clamping groove, and the jacking bolt penetrates through the end part of the lower clamping groove and is connected with the pressing plate; the lower clamping groove is a U-shaped clamping groove with an upward opening, and grooves are formed in the positions where the upper clamping groove and the lower clamping groove of the platform base are arranged.
3. The furnace shell assembling device for the blast furnace hot blast stove according to claim 1, wherein: the slant telescopic screw and the horizontal telescopic screw comprise threaded sleeves, lead screws are respectively installed at two ends of each threaded sleeve, the thread directions of the two lead screws are opposite, and the threaded sleeves are provided with rotating handles.
4. The construction method for splicing the furnace shell by adopting any one of the blast furnace hot blast furnace shell splicing devices comprises the first step of determining the central point of the spliced furnace shell on a platform base and determining the positions of concentric circles of an upper opening and a lower opening of the furnace shell; the method is characterized in that: a fixer positioning circle is drawn according to the determined furnace shell center point as the circle center; calculating the lengths of the horizontal telescopic screw and the inclined telescopic screw according to the radius of the furnace shell;
secondly, hoisting each arc-shaped furnace shell plate to the platform base, installing a lower clamping groove at the bottom of the furnace shell plate, and fixing an upper clamping groove at the top of the furnace shell plate;
thirdly, roughly adjusting the lengths of the horizontal telescopic screw rod and the inclined telescopic screw rod; the upper end of the oblique telescopic screw rod is connected with the upper clamping groove, and the lower end of the oblique telescopic screw rod is connected with the fixer; one end of the horizontal telescopic screw rod is connected with the lower clamping groove, and the other end of the horizontal telescopic screw rod is connected with the fixer.
And fourthly, welding the fixator on a fixator positioning circle drawn on the platform base.
Fifthly, finely adjusting the length of the horizontal telescopic screw according to the calculated length in the first step, and accurately supporting the lower opening of the furnace shell to a radius position required by a drawing; and finely adjusting the inclined telescopic screw rod to support the upper opening of the furnace shell to the radius position required by the drawing.
5. The construction method for splicing the furnace shell of the blast furnace hot blast furnace shell splicing device according to claim 4 is characterized in that: and in the fifth step of adjusting the upper opening of the furnace shell plate, a thin iron wire rope is placed at the diameter position of the upper opening of the blast furnace, and measurement is carried out at any time through a steel tape so as to provide a basis for adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110453257.2A CN113025770A (en) | 2021-04-26 | 2021-04-26 | Blast furnace hot blast stove shell assembling device and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110453257.2A CN113025770A (en) | 2021-04-26 | 2021-04-26 | Blast furnace hot blast stove shell assembling device and construction method thereof |
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| CN113025770A true CN113025770A (en) | 2021-06-25 |
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| CN202110453257.2A Pending CN113025770A (en) | 2021-04-26 | 2021-04-26 | Blast furnace hot blast stove shell assembling device and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113814598A (en) * | 2021-10-28 | 2021-12-21 | 上海宝冶冶金工程有限公司 | Method for mounting furnace shell of ultra-large hot blast furnace |
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2021
- 2021-04-26 CN CN202110453257.2A patent/CN113025770A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113814598A (en) * | 2021-10-28 | 2021-12-21 | 上海宝冶冶金工程有限公司 | Method for mounting furnace shell of ultra-large hot blast furnace |
| CN113814598B (en) * | 2021-10-28 | 2023-09-26 | 上海宝冶冶金工程有限公司 | Method for installing furnace shell of ultra-large hot blast stove |
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