CN114774607A - Hot blast stove bottom structure and welding method thereof - Google Patents
Hot blast stove bottom structure and welding method thereof Download PDFInfo
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- CN114774607A CN114774607A CN202210434820.6A CN202210434820A CN114774607A CN 114774607 A CN114774607 A CN 114774607A CN 202210434820 A CN202210434820 A CN 202210434820A CN 114774607 A CN114774607 A CN 114774607A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/10—Other details, e.g. blast mains
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/02—Brick hot-blast stoves
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Abstract
The utility model relates to a hot-blast furnace bottom structure relates to the technical field of hot-blast furnace structure, including furnace body and a plurality of division board, on division board fixed connection bottom surface outside the furnace body, the division board is used for supporting the furnace body, and the division board is used for separating the furnace body bottom surface and is a plurality of cavities of each other not UNICOM, is provided with the packing heat insulating part in the cavity between the division board, packs the hole that the heat insulating part is used for shutoff furnace body bottom, reduces the probability that steam leaks outside the furnace body from the hole in the furnace body. This application has the effect that reduces the required cost of hot-blast furnace stove bottom welding.
Description
Technical Field
The application relates to the technical field of hot blast stove structures, in particular to a hot blast stove bottom structure and a welding method thereof.
Background
The hot blast stove is a device for providing hot air for a blast furnace by burning fuel. The blast furnace is filled with hot air, which can improve the heat utilization rate and the thermal working effect, so the hot blast furnace has wide application in industry.
Relevant hot-blast furnace substructure includes furnace body, concrete pedestal and fills the heat insulating part, and the concrete pedestal is through pouring cement mortar subaerial and forming, and the concrete pedestal is used for supporting the stove bottom, and the furnace body setting is on the concrete pedestal, and the bottom butt of furnace body is on the concrete pedestal, and it can set up to the bar planting and glue to fill the heat insulating part, and the bar planting is glued and is used for the space between shutoff furnace body and the concrete pedestal. After the furnace body has long service life, the bottom of the furnace body can generate holes, hot air in the furnace body leaks at the moment, and the quantity of the hot air diffused in the furnace body can be reduced by arranging the filling heat insulation piece on the outer wall of the furnace body. The user can carry out welding work to the furnace body bottom through destroying the packing heat insulating part and the hoist furnace body of furnace body below to reach the effect in shutoff furnace body hole.
The above related art has the following disadvantages: the area of the bottom of the furnace body is large, the consumption of the filling heat insulation pieces required by the installation of the furnace body is large, and when welding is carried out, the performance of a large part of the filling heat insulation pieces which need to be damaged and removed is good, so that waste is caused, and the cost required by welding is increased.
Disclosure of Invention
In order to reduce the cost required by welding the bottom of the hot blast stove, the application provides a bottom structure of the hot blast stove and a welding method thereof.
The application provides a hot-blast furnace bottom structure adopts following technical scheme:
the utility model provides a hot-blast furnace bottom structure, includes furnace body and a plurality of division board, division board fixed connection on the outer bottom surface of furnace body, and the division board is used for supporting the furnace body, and the division board is used for separating the furnace body bottom surface and is a plurality of cavities of each other's UNICOM, is provided with the packing heat insulating part in the cavity between the division board, and the packing heat insulating part is used for the hole of shutoff furnace body bottom, reduces the probability that steam leaked outside the furnace body in the furnace body from the hole.
Through adopting above-mentioned technical scheme, through bottom setting up the division board under the furnace body, a plurality of cavities can be formed at furnace body bottom to a plurality of division boards, the user of service can set up the packing heat insulating part among the cavity between the division board, after the furnace body bottom produces the hole, the packing heat insulating part of hole place plays the effect of shutoff hole, can reduce the probability that steam effluvium in the furnace body, after the hole is produced, the user of service is through detaching the packing heat insulating part of hole place, can make the hole expose, and then make things convenient for the user of service to carry out weldment work, after weldment work, the user of service can set up the packing heat insulating part again between the division board, the volume reduction of the packing heat insulating part that needs to detach during the welding, the volume correspondence of the packing heat insulating part that resets reduces, can reduce the required cost of hot-blast furnace stove bottom welding.
Optionally, a bottom plate is arranged on the outer side wall of the furnace body, the partition plate extends out of the furnace body along the bottom surface of the furnace body, the bottom plate is fixedly connected with the partition plate, and the bottom of the furnace body, the bottom plate, the partition plate and the ground form a cavity structure.
By adopting the technical scheme, the bottom plate is arranged outside the furnace body, so that the partition plate extends out of the furnace body, a user can conveniently weld the outer side of the bottom of the furnace body, and the space for welding is increased.
Optionally, the bottom of the furnace body is provided with a base, the base is formed by pouring and solidifying cement mortar, and one side of the partition plate, far away from the furnace body, abuts against the base.
Through adopting above-mentioned technical scheme, through setting up the base in the furnace body bottom, make the base can support the furnace body, promote the stability of furnace body, through setting up the furnace body on the base, make the furnace body bottom rise, further make things convenient for the user of service to clear up the packing heat insulating part and repair work of furnace body bottom.
Optionally, a pouring table is arranged on the base and formed by cement mortar solidification, and the cement mortar submerges one side of the partition plate, far away from the furnace body, and is solidified to form the pouring table.
Through adopting above-mentioned technical scheme, pour the platform through setting up on the base, make and pour the platform and solidify through cement mortar and form, cement mortar floods the division board after, the platform of pouring that cement mortar solidifies and forms can with division board zonulae occludens, and then promotes the leakproofness of pouring between platform and the division board, can reduce the probability that steam spilled to the external environment from the furnace body bottom in the furnace body.
Optionally, a blocking plate is arranged between adjacent partition plates, and the blocking plate is used for blocking a space between the two partition plates and covering the filling heat insulation piece.
By adopting the technical scheme, the plugging plates are arranged between the partition plates, so that the plugging plates can plug the filling heat insulation piece into the cavity between the partition plates, the probability that the filling heat insulation piece is further damaged and is released to the external environment after hot gas is released from the bottom of the furnace body is reduced, the effect of protecting the filling heat insulation piece can be achieved by the plugging plates, and adverse effects of external liquid and air on the filling heat insulation piece can be reduced.
Optionally, the edge of the blocking plate is provided with a sealing edge, the sealing edge is formed by solidifying thermosetting resin, and the sealing edge is used for blocking a gap between the partition plate and the blocking plate.
Through adopting above-mentioned technical scheme, through setting up the sealed edge on the shutoff board, after the shutoff board was installed between the division board, the user of service can pour into thermosetting resin into between division board and shutoff board, and then makes the clearance of thermosetting resin solidification back shutoff division board and shutoff board, reaches the effect that makes shutoff board and division board sealing connection.
Optionally, the plugging plate is provided with air holes, the air holes penetrate through the plugging plate, the plugging plate is connected with a flow detector, and the flow detector is used for detecting the flow of the air flowing through the air holes.
Through adopting above-mentioned technical scheme, through seting up the bleeder vent on the shutoff board, set up flow detector on the bleeder vent, and then make flow detector can show the flow of the gas through the bleeder vent, after the furnace body bottom produced the hole, steam in the furnace body can destroy and fill the heat insulating part and flow out from the bleeder vent, produces the reading on the flow detector this moment, and the user of service can judge furnace body bottom hole place through flow detector, and then makes things convenient for the user of service to repair the furnace body.
The application provides a welding method of a bottom structure of a hot blast stove, which adopts the following technical scheme:
a welding method of a hearth structure of a hot blast stove comprises the following steps:
s1: pouring a base on the ground, welding a partition plate at the bottom of the furnace body, hoisting the furnace body to the base, and enabling the partition plate to abut against the base;
s2: arranging a template on a base, pouring cement mortar on the base, and enabling the cement mortar to submerge the bottom of the partition plate and solidify the cement mortar to form a pouring table;
s3: filling heat insulation pieces are injected between the partition plates, and plugging plates are arranged between the partition plates and abut against the filling heat insulation pieces;
s4: arranging a sealing edge at the edge of the plugging plate to hermetically connect the plugging plate with the partition plate;
s5: when the bottom of the furnace body is provided with holes, the blocking plates are removed and the filled heat insulation pieces are removed, welding work is carried out in the space between the partition plates, and the holes of the furnace body are blocked;
s6: and resetting the filling heat insulation piece, reinstalling the plugging plate between the partition plates, and setting a sealing edge.
By adopting the technical scheme, the plurality of partition plates are arranged below the furnace body, so that a user can firstly detach the plugging plates and clean the filling heat insulation pieces corresponding to the plugging plates when repairing, and further the holes at the bottom of the furnace body are exposed.
A welding method of a hearth structure of a hot blast stove comprises the following steps:
s1: pouring a base on the ground, welding a partition plate at the bottom of the furnace body, hoisting the furnace body to the base, and enabling the partition plate to abut against the base;
s2: arranging a template on a base, pouring cement mortar on the base, and enabling the cement mortar to submerge the bottom of the partition plate and solidify the cement mortar to form a pouring table;
s3: filling heat insulation pieces are injected between the partition plates, and plugging plates are arranged between the partition plates and abut against the filling heat insulation pieces;
s4: arranging a sealing edge at the edge of the plugging plate to hermetically connect the plugging plate with the partition plate;
s51: judging the position of the hole at the bottom of the furnace body by observing the data of the flow detector on each plugging plate;
s52: removing the plugging plate where the flow detector with the changed reading is positioned, damaging the filling heat insulation piece corresponding to the position of the plugging plate, performing welding work in the space between the partition plates, and plugging the hole of the furnace body;
s6: and resetting the filling heat insulation piece, reinstalling the plugging plate between the partition plates, and setting a sealing edge.
By adopting the technical scheme, the air holes are formed in the plugging plate, the flow detector is arranged on the plugging plate, when the flow detector reads, holes are generated at the bottom of the furnace body where the flow detector is located, the heat insulation piece is filled by hot air damage, the hole cannot be plugged by the filled heat insulation piece, the holes can be repaired by a user at the moment, the filled heat insulation piece is reset, and the user can further find the position of the hole conveniently.
To sum up, the beneficial technical effect of this application does:
1. the partition plates are arranged at the bottom of the furnace body, the plurality of partition plates can form a plurality of cavities at the bottom of the furnace body, and a user can arrange the filling heat insulation pieces in the cavities between the partition plates;
2. the pouring table is arranged on the base, so that the pouring table is formed by solidifying cement mortar, after the partition plate is submerged by the cement mortar, the pouring table formed by solidifying the cement mortar can be tightly connected with the partition plate, the sealing property between the pouring table and the partition plate is further improved, and the probability that hot air in the furnace body is diffused from the bottom of the furnace body to the external environment can be reduced;
3. through seting up the bleeder vent on the shutoff board, set up flow detector on the bleeder vent, and then make flow detector can show the flow through the gaseous of bleeder vent, after the furnace body bottom produced the hole, steam in the furnace body can destroy and fill the heat insulating part and flow from the bleeder vent, produces the reading on the flow detector this moment, and the user of service can judge furnace body bottom hole place position through flow detector, and then makes things convenient for the user of service to repair the furnace body.
Drawings
Fig. 1 is a schematic structural view of a furnace body according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a partition plate according to an embodiment of the present application.
FIG. 3 is a schematic view of the structure of a divider panel and a filled insulation according to an embodiment of the present application.
Fig. 4 is a schematic structural view of a closure plate according to an embodiment of the present application.
Fig. 5 is a schematic structural view of the furnace body and the sealing edge according to the embodiment of the present application.
Reference numerals: 1. a furnace body; 2. a base plate; 3. a partition plate; 4. a base; 5. a pouring platform; 6. filling a thermal insulation member; 7. a plugging plate; 71. air holes are formed; 72. a flow detector; 8. and (7) sealing the edges.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a bottom structure of a hot blast stove. Referring to fig. 1, 2 and 3, the furnace body 1 is provided with a furnace body 1, and the furnace body 1 is used for placing fuel and burning. Furnace body 1 sets up to cylindrical barrel structure, and the bottom of furnace body 1 levels, is provided with bottom plate 2 on the outer wall of furnace body 1 bottom, and bottom plate 2 is circular flat structure, and bottom plate 2 passes through welded fastening in furnace body 1 bottom. A plurality of partition plates 3 are fixedly welded on the outer bottom surface of the furnace body 1, the partition plates 3 are of rectangular flat plate structures, the partition plates 3 are perpendicular to the bottom surface of the furnace body 1, and the partition plates 3 are arranged along the circumference of the furnace body 1. One end of the partition plate 3 is superposed with the circle center of the furnace body 1, and the other end extends to the outer edge of the bottom plate 2. One side of the partition plate 3 far away from the furnace body 1 is used for being abutted against the ground, a cavity is formed between the two adjacent partition plates 3, the bottom plate 2 and the ground, and a plurality of cavities are cut at the bottom part of the furnace body 1 by the plurality of partition plates 3. The cavity between the partition plates 3 is filled with a filling heat insulation piece 6, and the filling heat insulation piece 6 can be formed by filling and solidifying bar-planting glue. The filling heat insulation piece 6 is used for plugging the cavity between the partition plates 3, when the bottom of the furnace body 1 generates holes due to high temperature, the filling heat insulation piece 6 has the effects of plugging the holes and insulating heat, and the probability that high-temperature gas in the furnace body 1 is scattered out of the furnace body 1 can be reduced. Through separating the space at the bottom part of the furnace body 1, the user can clear the filling heat insulation piece 6 between the two sub-partition plates 3 at which the hole is located and perform welding work according to the position of the hole generated at the bottom of the furnace body 1, and then reset the filling heat insulation piece 6, so that the effect of reducing the consumption of the filling heat insulation piece 6 in the welding process is achieved, and the cost of the welding work can be reduced.
Referring to fig. 1 and 2, a base 4 is arranged below the furnace body 1, the base 4 is formed by pouring concrete, the base 4 is arranged in a cylindrical structure, and one side of the partition plate 3 far away from the furnace body 1 is fixed on the base 4. Through set up base 4 below furnace body 1, make the lower bottom of furnace body 1 be higher than ground setting, make things convenient for the user of service to clear away the packing heat insulating part 6 and arrange packing heat insulating part 6 of furnace body 1 lower bottom.
Referring to fig. 1 and 2, a casting table 5 is provided on a base 4, and the casting table 5 is formed by casting and solidifying cement mortar. When the user hoists furnace body 1 to base 4, the bottom butt of division board 3 is on base 4, and the user pours formation through setting up the template on base 4 and pours and pour platform 5, makes cement mortar can flood division board 3 downside, and then makes and pour platform 5 and can be connected with division board 3 sealing after solidifying, promotes the leakproofness of the cavity between the division board 3.
Referring to fig. 3 and 4, the furnace body 1 is detachably connected with a plugging plate 7, the plugging plate 7 is an arc-shaped plate structure, and the plugging plate 7 is located between two adjacent partition plates 3. The user will fill the back of packing heat insulating part 6 between division board 3, can fill in shutoff board 7 between two division boards 3, and then reach sealed and thermal-insulated effect, can reduce the volume that steam effluvium behind the 1 bottom of furnace body produced the hole.
Referring to fig. 5, the furnace body 1 is provided with a sealing edge 8, and the sealing edge 8 is formed by applying and solidifying a thermosetting resin. The sealing edge 8 is arranged on the outer side surface of the plugging plate 7 and is positioned at the gap between the partition plate 3 and the plugging plate 7. After the plugging plates 7 are arranged between the partition plates 3, a user can use thermosetting resin to plug the gaps between the partition plates 3 and the plugging plates 7, and further the probability that hot gas is diffused from the gaps between the plugging plates 7 and the partition plates 3 through the filling heat insulation pieces 6 is reduced.
Referring to fig. 3 and 4, an air hole 71 is formed in the blocking plate 7, the air hole 71 is formed in the middle of the blocking plate 7, the air hole 71 penetrates through the blocking plate 7, the air hole 71 is used for allowing air to pass through the blocking plate 7, a flow detector 72 is mounted on the blocking plate 7, an air inlet of the flow detector 72 is communicated with the air hole 71, and the flow detector 72 is used for detecting the amount of air flowing out of the air hole 71. When the bottom of the furnace body 1 generates a hole, the heat insulation piece 6 is filled with hot air which firstly blocks the hole in the furnace body 1, after the heat insulation piece 6 fails, the hot air is diffused through the air holes 71, and a user can know the position of the hole at the bottom of the furnace body 1 through the flow detector 72, so that the user can conveniently remove the blocking plate 7 and destroy the filled heat insulation piece 6, and the hole at the bottom of the furnace body 1 is blocked. When the hole in the bottom of the furnace body 1 is large, a user can pour the platform 5 through damage, so that the furnace body 1 is separated from the base 4, and the user can move the furnace body 1 and perform welding repair work.
The implementation principle of the embodiment of the application is as follows: through set up division board 3 in furnace body 1 outer bottom, make division board 3 evenly separate furnace body 1 lower part for a plurality of regions, user's personnel sets up the packing heat insulating part 6 through setting up in the cavity between division board 3, and user's personnel can carry out the weldment work of hole according to the different regional damage degree in furnace body 1 bottom, and the packing heat insulating part 6 of different positions is pertinence changed, can reduce the raw and other materials of consumption in the weldment work, and then reduce the cost.
The embodiment of the application discloses a welding method for a furnace bottom of a hot blast furnace, which comprises the following steps:
s1: pouring a base 4 on the ground, welding a partition plate 3 at the bottom of the furnace body 1, hoisting the furnace body 1 to the base 4, and enabling the partition plate 3 to abut against the base 4;
s2: arranging a template on the base 4, pouring cement mortar on the base 4 to submerge the bottom of the partition plate 3, and solidifying the cement mortar to form a pouring table 5;
s3: filling heat insulation pieces 6 are injected between the partition plates 3, and plugging plates 7 are arranged between the partition plates 3, so that the plugging plates 7 abut against the filling heat insulation pieces 6;
s4: a sealing edge 8 is arranged at the edge of the plugging plate 7, so that the plugging plate 7 is connected with the partition plate 3 in a sealing way;
s5: when the bottom of the furnace body 1 is provided with holes, the blocking plates 7 are removed and the filled heat insulation pieces 6 are removed, and welding work is carried out in the space between the partition plates 3 to block the holes of the furnace body 1;
s6: the filling insulation 6 is reset, the closure plate 7 is reinstalled between the partition plates 3, and the sealing edge 8 is set.
Further, in step S5, S5 includes S51 and S52:
s51: judging the position of the hole at the bottom of the furnace body 1 by observing the data of the flow detector 72 on each plugging plate 7;
s52: the plugging plate 7 where the flow detector 72 with the changed reading is located is removed, the filling heat insulation piece 6 corresponding to the position of the plugging plate 7 is damaged, welding work is carried out in the space between the partition plates 3, and the hole of the furnace body 1 is plugged.
The embodiments of the present invention are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a hot-blast furnace bottom structure which characterized in that: including furnace body (1) and a plurality of division board (3), division board (3) fixed connection be in on the outer bottom surface of furnace body (1), division board (3) are used for supporting furnace body (1), and division board (3) are used for separating furnace body (1) bottom surface into a plurality of not UNICOM's of each other cavity, are provided with in the cavity between division board (3) and fill thermal-insulated piece (6), fill thermal-insulated piece (6) and be used for the hole of shutoff furnace body (1) bottom, reduce furnace body (1) interior steam from the hole leak to the outer probability of furnace body (1).
2. A hot blast stove bottom structure according to claim 1, characterised in that: the furnace body (1) is provided with a bottom plate (2) on the outer side wall, the partition plate (3) extends to the outside of the furnace body (1) along the bottom surface of the furnace body (1), the bottom plate (2) is fixedly connected with the partition plate (3), and the bottom of the furnace body (1), the bottom plate (2), the partition plate (3) and the ground form a cavity structure.
3. The stove bottom structure of claim 1, wherein: the furnace body (1) bottom is provided with base (4), base (4) pour through cement mortar and solidify and form, and the one side butt of keeping away from furnace body (1) on division board (3) is on base (4).
4. A hot blast stove bottom structure according to claim 3, characterized in that: be provided with on base (4) and pour platform (5), pour platform (5) and solidify through cement mortar and form, cement mortar floods the division board (3) and goes up one side of keeping away from furnace body (1) and solidifies and form and pour platform (5).
5. A hot blast stove bottom structure according to claim 4, characterized in that: and a blocking plate (7) is arranged between the adjacent partition plates (3), and the blocking plate (7) is used for blocking the space between the two partition plates (3) and covering the filling heat insulation piece (6).
6. A hot blast stove bottom structure according to claim 5, characterized in that: the edge of the plugging plate (7) is provided with a sealing edge (8), the sealing edge (8) is formed by solidifying thermosetting resin, and the sealing edge (8) is used for plugging a gap between the partition plate (3) and the plugging plate (7).
7. A hot blast stove bottom structure according to claim 6, characterized in that: the air holes (71) are formed in the plugging plate (7), the air holes (71) penetrate through the plugging plate (7), the plugging plate (7) is connected with a flow detector (72), and the flow detector (72) is used for detecting the flow of gas flowing through the air holes (71).
8. A method of welding a hearth structure of a hot blast stove according to claim 6, characterised in that: the method comprises the following steps:
s1: pouring a base (4) on the ground, welding a partition plate (3) at the bottom of the furnace body (1), hoisting the furnace body (1) to the base (4), and enabling the partition plate (3) to abut against the base (4);
s2: arranging a template on the base (4), pouring cement mortar on the base (4) to submerge the bottom of the partition plate (3) and solidify the cement mortar to form a pouring table (5);
s3: filling heat insulation pieces (6) are injected between the partition plates (3), and plugging plates (7) are arranged between the partition plates (3) so that the plugging plates (7) abut against the filling heat insulation pieces (6);
s4: a sealing edge (8) is arranged at the edge of the plugging plate (7) to lead the plugging plate (7) to be connected with the partition plate (3) in a sealing way;
s5: when holes are generated at the bottom of the furnace body (1), the blocking plates (7) are removed, the filled heat insulation pieces (6) are removed, welding work is carried out in the space between the partition plates (3), and the holes of the furnace body (1) are blocked;
s6: the filling heat insulation piece (6) is reset, the plugging plate (7) is reinstalled between the partition plates (3), and the sealing edge (8) is arranged.
9. A method of welding a hearth structure of a hot blast stove according to claim 7, characterized in that: the method comprises the following steps:
s1: pouring a base (4) on the ground, welding a partition plate (3) at the bottom of the furnace body (1), hoisting the furnace body (1) to the base (4), and enabling the partition plate (3) to abut against the base (4);
s2: arranging a template on the base (4), pouring cement mortar on the base (4) to submerge the bottom of the partition plate (3) and solidify the cement mortar to form a pouring table (5);
s3: filling heat insulation pieces (6) are injected between the partition plates (3), and plugging plates (7) are arranged between the partition plates (3) so that the plugging plates (7) abut against the filling heat insulation pieces (6);
s4: a sealing edge (8) is arranged at the edge of the plugging plate (7) to lead the plugging plate (7) to be connected with the partition plate (3) in a sealing way;
s51: judging the position of the hole at the bottom of the furnace body (1) by observing the data of the flow detector (72) on each plugging plate (7);
s52: removing the plugging plate (7) where the flow detector (72) with the changed reading is positioned, destroying the filling heat insulation piece (6) corresponding to the position of the plugging plate (7), and performing welding work in the space between the partition plates (3) to plug the hole of the furnace body (1);
s6: the filling heat insulation piece (6) is reset, the plugging plate (7) is reinstalled between the partition plates (3), and the sealing edge (8) is arranged.
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