CN216097291U - Blast furnace tuyere flange welding structure and welding device - Google Patents
Blast furnace tuyere flange welding structure and welding device Download PDFInfo
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- CN216097291U CN216097291U CN202121989505.7U CN202121989505U CN216097291U CN 216097291 U CN216097291 U CN 216097291U CN 202121989505 U CN202121989505 U CN 202121989505U CN 216097291 U CN216097291 U CN 216097291U
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Abstract
The utility model provides a blast furnace tuyere flange welding structure and a welding device, belonging to the technical field of blast furnace welding, wherein the welding structure comprises a furnace shell, a plurality of flanges, an outer supporting piece and an inner supporting piece; a plurality of mounting openings are formed in the outer wall of the furnace shell at intervals around the circumferential direction of the outer wall, a single-side V-shaped welding groove is formed in the opening wall of each mounting opening, and the welding groove faces the inside of the furnace shell; and the inner part of the furnace shell is horizontally and fixedly connected with an inner supporting piece; the flanges correspond to the mounting openings one by one; the flange is provided with an extending end extending into the mounting port and an external end arranged outside the furnace shell; one surface of the external end opposite to the furnace shell is abutted against the outer surface of the furnace shell; the external end of the flange is fixedly connected with an outer supporting piece which is fixed outside the furnace shell; the flange and the furnace shell are fixed through a welding groove. The welding structure realized by the welding device can solve the problem of small welding space, and can prevent deformation and cracking when the welding seam is too deep and the welding opening is large, thereby improving the quality of the welding seam.
Description
Technical Field
The utility model belongs to the technical field of blast furnace welding, and particularly relates to a blast furnace tuyere flange welding structure and a welding device.
Background
When the blast furnace is in actual use, the steel plate with the furnace shell at the tuyere is generally required to be perforated, and then an upper tuyere flange is welded. Because the furnace shell and the tuyere flange are important structural components of iron-making equipment, the quality of welding quality has important influence on the stable structure of the blast furnace body and production, and particularly, a strict and thorough welding process is required. Because the furnace shell plate of the blast furnace is up to 40mm or more, and the common materials of the flange and the furnace shell are different, different materials need to be welded, the welding amount is large, and the problem of welding deformation is easy to generate; therefore, the tuyere flange is welded on the furnace shell by a double groove welding mode.
However, in actual work, sometimes the area of the tuyere flange edge covering the furnace shell is large, and the distance between the tuyere flange and the outer wall of the furnace shell is small, so that when the existing welding machine or manual welding is carried out, a welding tool cannot be directly extended into a small gap for welding, and double groove welding cannot meet construction requirements; the single-groove welding causes the problems of large groove height, too deep welding line and too large welding amount, and the phenomenon of welding line deformation or cracking is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a blast furnace tuyere flange welding structure and a welding device, aiming at solving the problem that double-groove welding is inconvenient when the welding space on one side is small; and when the welding seam is too deep and the welding opening is larger due to single-groove welding, the welding is easy to deform and crack.
In order to achieve the purpose, the utility model adopts the technical scheme that:
in a first aspect, a blast furnace tuyere flange welded structure is provided, including:
the furnace comprises a furnace shell, wherein a plurality of mounting ports are formed in the outer wall of the furnace shell at intervals around the circumference of the outer wall of the furnace shell, a unilateral V-shaped welding groove is formed in the wall of each mounting port, and the welding groove faces the inside of the furnace shell; an inner supporting piece is horizontally and fixedly connected inside the furnace shell, and the inner supporting piece is in a horizontal state;
the flanges correspond to the mounting openings one by one; the flange is provided with an extending end extending into the mounting port and an external end arranged outside the furnace shell; one surface of the external end opposite to the furnace shell is abutted against the outer surface of the furnace shell; the external end of each flange is fixedly connected with an outer supporting piece, and the outer supporting pieces are fixed outside the furnace shell; the flange and the furnace shell are fixed through the welding groove.
With reference to the first aspect, in one possible implementation manner, the inner support includes:
the first annular support is arranged inside the furnace shell and comprises an outer ring which is abutted with the inner wall of the furnace shell and an inner ring which is arranged inside the outer ring;
and the inner support beams are arranged in the first annular support at intervals along the circumferential direction of the outer ring, and two ends of the inner support beams are respectively fixed with the inner ring and the outer ring.
With reference to the first aspect, in one possible implementation manner, the outer support includes:
the second annular bracket is arranged outside the flange around the mounting opening;
and the outer support beams are arranged around the second annular support at intervals, one ends of the outer support beams are fixed with the second annular support, and the other ends of the outer support beams are fixed with the outer wall of the furnace shell.
Compared with the prior art, the blast furnace tuyere flange welded structure that this application embodiment provided has following advantage:
1. the unilateral V-shaped welding groove is formed in the furnace shell with the larger thickness, so that the technical problems that a welding space is small, a welding head is inconvenient to insert and welding cannot be performed during double groove welding are solved;
2. an inner supporting piece and an outer supporting piece are respectively arranged inside and outside the furnace shell and used for supporting the furnace shell and the flange, so that deformation and translocation of the flange or the furnace shell in the welding process are avoided, and the welding seam is prevented from deforming and cracking.
In a second aspect, the present invention further provides a welding apparatus for a blast furnace tuyere flange, which is used for welding any one of the above blast furnace tuyere flange welding structures, and includes:
the heating component is fixedly connected to the outer part of the furnace shell, arranged around the mounting port and fixedly connected with the outer supporting piece; the heating assembly comprises a combustion head arranged towards the mounting port;
and the welding part is used for welding around the welding groove under the driving of a welder.
With reference to the second aspect, in one possible implementation manner, the heating assembly further includes:
the annular piece surrounds the mounting opening and abuts against the outer part of the furnace shell; the annular piece is provided with a first accommodating cavity and a second accommodating cavity which are mutually isolated, and the first accommodating cavity is arranged on the outer side of the second accommodating cavity along the radial direction of the annular piece;
the fixing piece is arranged in the first accommodating cavity, one end of the fixing piece is fixedly connected with the furnace shell, and the other end of the fixing piece is fixedly connected with the annular piece and used for fixing the heating assembly outside the furnace shell; and
and the heating element is connected with the combustion head, and the heating element is arranged in the second accommodating cavity and used for carrying out preheating before welding and heat tracing treatment in welding on the welding groove.
In some embodiments, the heating element is a vent pipe penetrating through the second accommodating cavity, and the combustion head is arranged on the vent pipe at intervals; one end of the vent pipe extends out of the second accommodating cavity and is connected with an air inlet pipe, and the air inlet pipe is communicated with an external air supply device.
Illustratively, a breather valve is arranged on the air inlet pipe.
In some embodiments, the fixture includes:
the magnet is annularly arranged in the first accommodating cavity, and one end face of the magnet is attached to the outer surface of the furnace shell;
and the two groups of adjusting parts are symmetrically fixed on the other end surface of the magnet along the center of the magnet, and the adjusting parts are connected in the annular part in a rotating manner along the radial direction of the furnace shell and are used for driving the magnet to be close to or far away from the furnace shell.
Illustratively, the adjustment member includes:
the connecting block is fixed on the other end face of the magnet, and an accommodating groove is formed towards the direction of the magnet;
one end of the rotary connecting rod is screwed into the annular piece along the radial direction of the furnace shell and is rotatably connected with the connecting block; the other end is abutted against the outside of the furnace shell;
the limiting block is arranged in the accommodating groove and fixedly connected with the screwing-in end of the screwing rod.
With reference to the second aspect, in one possible implementation manner, a fixing beam is fixedly connected between the outer support and the heating assembly.
The blast furnace tuyere flange welding set that this application embodiment provided for weld above-mentioned blast furnace tuyere flange welded structure, compare with prior art, set up heating element through encircleing the installing port among this welding set for to weld the position and weld the foreweld and preheat and weld in the companion heat, and provide even stable heat through the combustion head, avoid electric heat piece to produce thermal discontinuity, the not enough problem of temperature, reduce the production of crack and deformation in the welding, improve the welding seam quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a first structural schematic diagram of a blast furnace tuyere flange welding structure and a welding device provided by an embodiment of the utility model;
FIG. 2 is a schematic view of a partially enlarged structure at I shown in FIG. 1;
FIG. 3 is a schematic structural view of an adjustment member employed in an embodiment of the present invention;
fig. 4 is a left side view structural schematic diagram of a blast furnace tuyere flange welding device provided by an embodiment of the utility model;
FIG. 5 is a schematic structural view of an inner support member employed in an embodiment of the present invention;
fig. 6 is a structural schematic diagram of a blast furnace tuyere flange welding structure and a welding device provided by an embodiment of the utility model.
In the figure: 1. a furnace shell; 11. an installation port; 2. welding a groove; 3. an inner support; 31. a first annular support; 311. an outer ring; 312. an inner ring; 32. an inner corbel; 4. a flange; 5. an outer support; 51. a second annular support; 52. an outer corbel; 53. a fixed beam; 6. a heating assembly; 61. an annular member; 611. a first accommodating chamber; 612. a second accommodating chamber; 62. a fixing member; 621. a magnet; 622. an adjustment member; 6221. connecting blocks; 62211. accommodating grooves; 6222. a rotary connecting rod; 6223. a limiting block; 63. a heating member; 631. a breather pipe; 632. an air inlet pipe; 633. a vent valve; 634. a burner head.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 to 6 together, the welding structure of the tuyere flange of the blast furnace according to the present invention will now be described. The welding structure comprises a furnace shell 1, a plurality of flanges 4, an outer support 5 and an inner support 3; a plurality of mounting openings 11 are formed in the outer wall of the furnace shell 1 at intervals around the circumferential direction of the outer wall, a single-side V-shaped welding groove 2 is formed in the opening wall of each mounting opening 11, and the welding groove 2 faces the inside of the furnace shell 1; an inner supporting piece 3 is horizontally and fixedly connected inside the furnace shell 1, and the inner supporting piece 3 is in a horizontal state; the plurality of flanges 4 correspond to the mounting openings 11 one by one; the flange 4 is provided with an extending end extending into the mounting opening 11 and an external end arranged outside the furnace shell 1; one surface of the external end opposite to the furnace shell 1 is abutted against the outer surface of the furnace shell 1; the external end of each flange 4 is fixedly connected with an external support 5, and the external support 5 is fixed outside the furnace shell 1; the flange 4 and the furnace shell 1 are fixed through a welding groove 2.
Compared with the prior art, the welding structure provided by the embodiment of the application has the following advantages: the unilateral V-shaped welding groove 2 is arranged on the furnace shell 1 with larger thickness, so that the technical problems that a welding space is small, a welding head is inconvenient to insert and welding cannot be performed during double-groove welding are solved; an inner supporting piece 3 and an outer supporting piece 5 are respectively arranged inside and outside the furnace shell 1 and are used for supporting the furnace shell 1 and the flange 4, deformation and translocation of the flange 4 or the furnace shell 1 in the welding process are avoided, and the welding seam is prevented from deforming and cracking.
Referring to fig. 5, in a possible implementation, the inner support 3 includes a first ring support 31 and a plurality of inner corbels 32; the first annular support 31 is arranged inside the furnace shell 1 and comprises an outer ring 311 abutted against the inner wall of the furnace shell 1 and an inner ring 312 arranged inside the outer ring 311; the plurality of inner corbels 32 are arranged in the first ring bracket 31 at intervals along the circumferential direction of the outer ring 311, and both ends of the inner corbels are fixed to the inner ring 312 and the outer ring 311, respectively.
The inner support beams 32 and the annular parts 61 are used for supporting the inside of the furnace shell 1, so that the furnace shell 1 is prevented from deforming in the welding process.
Referring to fig. 4, in a possible implementation, the outer support 5 comprises a second annular support 51 and a plurality of outer corbels 52; the second annular bracket 51 is arranged outside the flange 4 around the mounting opening 11; a plurality of outer corbels 52 are arranged around the second annular bracket 51 at intervals, one end of each outer corbel 52 is fixed with the second annular bracket 51, and the other end is fixed with the outer wall of the furnace shell 1.
Through setting up second ring support 51 and outer support 52, conveniently fix flange 4 outside stove outer covering 1, avoid the welding process in flange 4 aversion, influence welding quality.
In addition, a cross beam is provided on the second ring bracket 51 for supporting the second ring bracket 51.
Based on the same inventive concept, please refer to fig. 1 to 6 together, the utility model also provides a welding device for the blast furnace tuyere flange, which is used for welding any one of the above welding structures of the blast furnace tuyere flange and comprises a heating assembly 6 and a welding part which are fixedly connected with the outside of the furnace shell 1; the heating component 6 is fixedly connected to the outer part of the furnace shell 1, arranged around the mounting port 11 and fixedly connected with the outer support 5; the heating assembly 6 includes a burner head 634 disposed toward the mounting port 11; the welding part is used for welding around the welding groove 2 under the driving of a welder. Wherein the heating assembly 6 is fixedly connected with the outer support 5 and is disposed around the mounting port 11, and the heating assembly 6 includes a combustion head 634 disposed toward the mounting port 11.
It should be noted that, the combustion heads 634 and the welding parts adopted in the present application all belong to the prior art, and the combustion heads 634 are provided in plurality, so that the pre-welding preheating of the welding position and the heat tracing during welding can be realized through flame heating, thereby avoiding the generation of cracks or deformation during welding, and improving the quality of the welding seam. In addition, during welding, two welders are required to hold welding parts to weld on two sides of the symmetrical center of the mounting opening 11 at the same time, the welding speeds of the two welders are close, and the thickness of the welding meat on the two sides is equal to the welding length.
Referring to fig. 1 and 2, in a possible implementation, the heating assembly 6 further includes a ring member 61, a fixing member 62, and a heating member 63; the annular piece 61 is abutted to the outer part of the furnace shell 1 around the mounting opening 11; the ring member 61 is provided with a first accommodating cavity 611 and a second accommodating cavity 612 which are isolated from each other, and the first accommodating cavity 611 is arranged outside the second accommodating cavity 612 along the radial direction of the ring member 61; the fixing part 62 is arranged in the first accommodating cavity 611, one end of the fixing part 62 is fixedly connected with the furnace shell 1, and the other end is fixedly connected with the annular part 61 and used for fixing the heating assembly 6 outside the furnace shell 1; the heating element 63 is connected to the combustion head 634, and the heating element 63 is disposed in the second accommodating chamber 612 for performing pre-welding preheating and heat tracing treatment during welding on the welding groove 2.
Since the heating assembly 6 is provided with a plurality of burning heads 634, the weight of the heating assembly 6 is relatively large, and therefore, the fixing member 62 is further provided in the present apparatus to achieve the reinforcement of the burning heads 634. The heating component 6 is fixed outside the furnace shell 1 through the fixing piece 62, the stable support of the heating component 6 is realized, the heating of the welding part is realized through the heating piece 63, and different temperatures required by different stages of the welding process are ensured.
Referring to fig. 1 and 4, in some embodiments, the heating member 63 is a ventilation pipe 631 penetrating the second accommodating chamber 612, and the ventilation pipe 631 is provided with combustion heads 634 at intervals; one end of the vent tube 631 extends out of the second receiving chamber 612 and is connected to an intake tube 632, and the intake tube 632 is communicated with an external air supply device.
It should be appreciated that external gas supplies are known in the art, and heat is provided to the weld by passing combustible gas from the gas supply into the inlet conduit 632 and through the vent conduit 631 to the burner head 634, where it is combusted by the burner head 634.
Referring to fig. 4, the intake pipe 632 is exemplarily provided with a ventilation valve 633. Through setting up breather valve 633, the air output when conveniently controlling the flame burning to the control of the temperature of realization to the welding part.
Referring to fig. 1 and fig. 2, in some embodiments, the fixing element 62 includes a magnet 621 and two sets of adjusting elements 622, the magnet 621 is disposed around the first accommodating cavity 611, and an end surface of the magnet 621 is attached to the outer surface of the furnace shell 1; two sets of adjusting members 622 are symmetrically fixed on the other end surface of the magnet 621 along the center of the magnet 621, and the adjusting members 622 are screwed in the ring member 61 along the radial direction of the furnace casing 1 for driving the magnet 621 to approach or leave the furnace casing 1.
The magnet 621 is driven to move in the direction close to or far away from the furnace shell 1 by screwing in or out the adjusting part 622, the magnet 621 is attached to the furnace shell 1 and is adsorbed on the outer surface of the furnace shell 1 in a fixed state, and when the magnet 621 is adsorbed on the furnace shell 1, the heating component 6 is fixed on the outer surface of the furnace shell 1 through the adjusting part 622, so that the heating component 6 is prevented from moving; the magnet 621 also has a removal position away from the furnace shell 1, by rotating the adjustment member 622, the magnet 621 is brought away from the furnace shell 1, thereby facilitating the removal of the heating assembly 6 from the outer surface of the furnace shell 1.
Referring to fig. 2, for example, the adjusting member 622 includes a connecting block 6221, a connecting rod 6222 and a limiting block 6223; the connecting block 6221 is fixed on the other end surface of the magnet 621, and an accommodating groove 62211 is formed towards the magnet 621; one end of the rotary rod 6222 is screwed into the annular member 61 along the radial direction of the furnace shell 1 and is rotatably connected with the connecting block 6221; the other end is connected with the outside of the furnace shell 1; the limiting block 6223 is disposed in the accommodating groove 62211 and is fixedly connected to the screwing end of the screwing rod 6222.
When the screwing rod 6222 is screwed in the direction close to the furnace shell 1, the limiting block 6223 at one end of the screwing rod 6222 presses the magnet 621 against the outer surface of the furnace shell 1, so that the magnet 621 is in the above-mentioned fixed state; when the rotating rod 6222 is screwed out in a direction away from the furnace shell 1, the limiting block 6223 is limited in the accommodating groove 62211, so that the rotating rod 6222 drives the limiting block 6223 to move, the limiting block 6223 drives the connecting block 6221 to move, the magnet 621 fixedly connected with the connecting block 6221 is far away from the outer surface of the furnace shell 1, and the magnet 621 is in the above-mentioned dismounting state; through setting up connecting block 6221 for when rotatory extension pole 6222, the end that stretches into of extension pole 6222 rotates in connecting block 6221, and with extension pole 6222 spacing in connecting block 6221 simultaneously, realize that extension pole 6222 drives the direction that is close to or keeps away from stove outer shell 1 of magnet 621 and remove.
When the rotating rod 6222 and the connecting block 6221 are installed, the rotating rod 6222 may first pass through the ring member 61 and extend into the accommodating groove 62211 of the connecting block 6221, the limiting block 6223 is welded and fixed at the extending end of the rotating rod 6222, and then the connecting block 6221 and the magnet 621 are fixed, so as to fix the magnet 621 in the ring member 61.
As another specific example of the screw-on rod 6222 and the stopper 6223, the screw-on rod 6222 and the stopper 6223 may be replaced by a bolt and a nut, specifically, a head of the bolt is stopped in the accommodation groove 62211, a screw is rotated in the connection block 6221, and an end of the screw protrudes out of the ring member 61; the nut is welded and fixed at the extending end of the screw rod and abuts against the outer part of the annular piece 61.
Referring to fig. 1, in one possible implementation, a fixing beam 53 is fixedly connected between the outer support 5 and the heating element 6. Specifically, the fixing beam 53 is connected between the ring 61 and the heating assembly 6, and the heating assembly 6 and the outer support 5 are fixed by the fixing beam 53, so that the heating assembly 6 is abutted between the furnace shell 1 and the fixing beam 53, and the fixing of the heating assembly 6 is realized.
The blast furnace tuyere flange welding set that this application embodiment provided for weld above-mentioned blast furnace tuyere flange welded structure, compare with prior art, set up heating element 6 through encircleing installing port 11 among this welding set, be arranged in welding the position to weld the foreweld and preheat and weld in the companion heat, and provide even stable heat through combustion head 634, avoid the electric heat piece to produce thermal discontinuity, the problem that the temperature is not enough, reduce the production of crack and deformation in the welding, improve the welding seam quality.
It should be noted that, the wall thickness of the furnace shell 1 in the present application is greater than 50mm, and when welding, the single-side V-shaped welding groove 2 described in the present application needs to be matched with the heating assembly 6 and the welding method in the present application.
When the welding device is used for welding operation, the specific operation steps are as follows:
s100, polishing a welding groove 2 at the bottom of a furnace shell 1 and polishing and derusting a tuyere flange 4.
S200, positioning the tuyere flange 4, performing positioning welding on the tuyere flange 4 by adopting an inner opening of the welding groove 2, positioning by using the outer support piece 5 and the inner support piece 3, and fixing the heating assembly 6 outside.
S300, preheating the welding groove 2 before welding.
S400, welding the inner opening of the welding groove 2: firstly, back chipping is carried out on the broken welding spot planing port of the inner port of the welding groove 2; and then welding in stages.
Specifically, four stages of welding are divided, wherein the first stage is backing welding and 4 layers of welding are carried out in total; the first layer of welding meat reaches 5 mm; after the 2 nd to 4 th layers, the meat welding reaches 12 mm; and heat treatment is carried out after the four-layer welding is finished, so that the quality of the welding seam is improved. The specific heat treatment operation steps are as follows: each layer of solder is completed by flame heating through the burner head 634 to a temperature of 250-. Heating for 1 hour, maintaining the temperature at about 300 ℃ for 1.5 hours, and slowly cooling. Welding the 5 th to 11 th layers in the second stage to ensure that the welding meat reaches 20 to 25 mm; the above heat treatment operation is performed again. The third stage welds the 12 th to 19 th layers and carries on the above-mentioned heat treatment operation; welding the 20 th to 24 th layers at the fourth stage and carrying out the heat treatment operation; if the welding groove 2 is not welded completely after the four stages are finished, multilayer and multi-pass welding can be carried out again, namely, the 25 th layer to the 29 th layer are welded, heat treatment is carried out, and the like.
It should be noted that, in the multi-layer and multi-pass welding process, each layer of weld joint is completed, the internal stress needs to be eliminated by hammering.
S500, performing weld quality inspection; the method comprises deformation detection and ultrasonic flaw detection, namely, the deformation of the ovality of the furnace shell 1 is detected in the welding process and after welding, and then the internal defect detection after the welding is finished is carried out by adopting ultrasonic waves.
And S600, carrying out final heat treatment, hammering the welding groove 2, and eliminating internal stress at the welding seam.
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 utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Blast furnace tuyere flange welded structure, its characterized in that includes:
the furnace comprises a furnace shell, wherein a plurality of mounting ports are formed in the outer wall of the furnace shell at intervals around the circumference of the outer wall of the furnace shell, a unilateral V-shaped welding groove is formed in the wall of each mounting port, and the welding groove faces the inside of the furnace shell; an inner supporting piece is fixedly connected inside the furnace shell and is in a horizontal state;
the flanges correspond to the mounting openings one by one; the flange is provided with an extending end extending into the mounting port and an external end arranged outside the furnace shell; one surface of the external end opposite to the furnace shell is abutted against the outer surface of the furnace shell; the external end of each flange is fixedly connected with an external support piece; the flange and the furnace shell are fixed through the welding groove.
2. The blast furnace tuyere flange welding structure of claim 1, wherein the inner support comprises:
the first annular support is arranged inside the furnace shell and comprises an outer ring which is abutted with the inner wall of the furnace shell and an inner ring which is arranged inside the outer ring;
and the inner support beams are arranged in the first annular support at intervals along the circumferential direction of the outer ring, and two ends of the inner support beams are respectively fixed with the inner ring and the outer ring.
3. The blast furnace tuyere flange welding structure of claim 1, wherein the outer support includes:
the second annular bracket is arranged outside the flange around the mounting opening;
and the outer support beams are arranged around the second annular support at intervals, one ends of the outer support beams are fixed with the second annular support, and the other ends of the outer support beams are fixed with the outer wall of the furnace shell.
4. A blast furnace tuyere flange welding apparatus for welding a blast furnace tuyere flange welded structure according to any one of claims 1 to 3, comprising:
the heating component is fixedly connected to the outer part of the furnace shell, arranged around the mounting port and fixedly connected with the outer supporting piece; the heating assembly comprises a combustion head arranged towards the mounting port;
and the welding part is used for welding around the welding groove under the driving of a welder.
5. The blast furnace tuyere flange welding apparatus of claim 4, wherein the heating assembly further comprises:
the annular piece surrounds the mounting opening and abuts against the outer part of the furnace shell; the annular piece is provided with a first accommodating cavity and a second accommodating cavity which are mutually isolated, and the first accommodating cavity is arranged on the outer side of the second accommodating cavity along the radial direction of the annular piece;
the fixing piece is arranged in the first accommodating cavity, one end of the fixing piece is fixedly connected with the furnace shell, and the other end of the fixing piece is fixedly connected with the annular piece and used for fixing the heating assembly outside the furnace shell;
and the heating element is connected with the combustion head, and the heating element is arranged in the second accommodating cavity and used for carrying out preheating before welding and heat tracing treatment in welding on the welding groove.
6. The blast furnace tuyere flange welding device of claim 5, wherein the heating member is a ventilation pipe penetrating through the second accommodating chamber, and the combustion head is arranged on the ventilation pipe at intervals; one end of the vent pipe extends out of the second accommodating cavity and is connected with an air inlet pipe, and the air inlet pipe is communicated with an external air supply device.
7. The blast furnace tuyere flange welding device of claim 6, wherein a breather valve is provided on the intake pipe.
8. The blast furnace tuyere flange welding apparatus of claim 5, wherein the fixing member comprises:
the magnet is annularly arranged in the first accommodating cavity, and one end face of the magnet is attached to the outer surface of the furnace shell;
and the two groups of adjusting parts are symmetrically fixed on the other end surface of the magnet along the center of the magnet, and the adjusting parts are connected in the annular part in a rotating manner along the radial direction of the furnace shell and are used for driving the magnet to be close to or far away from the furnace shell.
9. The blast furnace tuyere flange welding apparatus of claim 8, wherein the adjusting member comprises:
the connecting block is fixed on the other end face of the magnet, and an accommodating groove is formed towards the direction of the magnet;
one end of the rotary connecting rod is screwed into the annular piece along the radial direction of the furnace shell and is rotatably connected with the connecting block; the other end is abutted against the outside of the furnace shell;
the limiting block is arranged in the accommodating groove and fixedly connected with the screwing-in end of the screwing rod.
10. The welding device for the blast furnace tuyere flange according to claim 4, wherein a fixing beam is fixedly connected between the outer support and the heating assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202121989505.7U CN216097291U (en) | 2021-08-23 | 2021-08-23 | Blast furnace tuyere flange welding structure and welding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121989505.7U CN216097291U (en) | 2021-08-23 | 2021-08-23 | Blast furnace tuyere flange welding structure and welding device |
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| CN216097291U true CN216097291U (en) | 2022-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115351451A (en) * | 2022-08-18 | 2022-11-18 | 东方电气集团东方锅炉股份有限公司 | Assembly welding method for side wall burner nozzle connecting pipe of multi-nozzle gasification furnace |
| CN115446426A (en) * | 2022-10-14 | 2022-12-09 | 河北冶金建设集团有限公司 | Off-line installation method for large-scale blast furnace tuyere flange |
-
2021
- 2021-08-23 CN CN202121989505.7U patent/CN216097291U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115351451A (en) * | 2022-08-18 | 2022-11-18 | 东方电气集团东方锅炉股份有限公司 | Assembly welding method for side wall burner nozzle connecting pipe of multi-nozzle gasification furnace |
| CN115446426A (en) * | 2022-10-14 | 2022-12-09 | 河北冶金建设集团有限公司 | Off-line installation method for large-scale blast furnace tuyere flange |
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