MODULAR ENCLOSURE STRUCTURE OF HIGH TEMPERATURE HEATING FURNACE AND INSTALLATION METHOD

Abstract

A modular structure wall of a high-temperature furnace, which greatly increases the radiation coefficient of the inner wall, enhances heat transfer efficiency, saves energy, reduces emissions, slows aging, and prolongs the furnace wall service life. The modular wall comprises preset furnace wall main trusses and a furnace roof truss. Connecting I-beams are respectively fixed on the bottom surface of the roof truss. Top clamping structures of hoisting outer screws are hooked with the bottoms of the I-beams. Upper surfaces of ceramic fiber cotton modules are uniformly distributed with upwardly convex hoisting outer screws. The ceramic fiber cotton modules are installed on the lower surface of the roof truss through the outer screws. A ceramic fiber cotton felt is laid in the gap between these modules and the lower I-beam surfaces, and a furnace wall inner protective lining is installed on the lower surfaces of the ceramic fiber cotton modules.

Claims

1. A modular enclosure structure of a high-temperature heating furnace comprising: a furnace wall comprising: furnace wall main truss; a plurality of first connectors clamped and fixed to the inner side of the furnace wall main truss; and wall module connected and fixed to the inner sides of the first connectors, and the wall module comprises an outer shell steel plate, a ceramic fiber cotton felt and a ceramic fiber cotton module sequentially arranged from the outside to the inside, wherein, the inner surface of the ceramic fiber cotton module of the furnace wall is provided with a furnace wall inner protective lining; and a furnace roof comprising: a furnace roof truss; a plurality of connecting I-beams connected and fixed at the bottom of the furnace roof truss, wherein a top clamping structure is clamped and fixed under each of the connecting I-beams; a hoisting outer screw connected and fixed at the bottom of the top clamping structure; and ceramic fiber cotton module connected and fixed below the hoisting outer screw, wherein a lower surface of the ceramic fiber cotton module of the furnace roof is provided with a furnace wall inner protective lining, wherein, a gap area is formed between the ceramic fiber cotton module of the furnace roof and the connecting I-beams, and the ceramic fiber cotton felt of the furnace roof is laid in the gap area.

2. The modular enclosure structure of the high-temperature heating furnace according to claim 1, wherein a plurality of steel beam frames are evenly distributed on the outer shell steel plate, an inner end of the steel beam frame is fixed and connected with the ceramic fiber cotton module of the furnace wall through a second connector, the space between the outer surface of the ceramic fiber cotton module of the furnace wall and the inner surface of the outer shell steel plate is filled with the ceramic fiber cotton felt of the furnace wall, and the inner surfaces of the ceramic fiber cotton felt of the furnace wall are fixedly provided with the furnace wall inner protective lining.

3. The modular enclosure structure of the high-temperature heating furnace according to claim 2, wherein each of the steel beam frames is a truss structure formed by riveting or welding angle steel, square steel, flat steel or pipes, the outer shell steel plate is fixed and connected with the inner side of the steel beam frame by riveting or welding, the outer end of the second connector is fixed and connected with the inner side of the steel beam frame by riveting or welding, and the inner end of the second connector is fixed and connected with the ceramic fiber cotton module of the furnace wall main trusses.

4. The modular enclosure structure of the high-temperature heating furnace according to claim 3, wherein the second connector is a bolt or a screw made of a high-temperature resistant material.

5. The modular enclosure structure of the high-temperature heating furnace according to claim 1, wherein the furnace wall main truss is a truss structure formed by riveting or welding channel steel, I-beams, angle steel, square steel or pipes, the first connector is evenly distributed on the inner side of the furnace wall main truss, and each of the first connectors is connected and fixed with the furnace wall main truss by riveting or welding.

6. The modular enclosure structure of the high-temperature heating furnace according to claim 1, wherein the furnace roof truss is a truss structure formed by riveting or welding channel steel, I-beams, angle steel, square steel or pipes.

7. The modular enclosure structure of the high-temperature heating furnace according to claim 1, wherein the furnace wall inner protective lining of the furnace roof and the furnace wall inner protective lining of the furnace wall are composite ceramic sheets, and the composite ceramic sheets of the furnace roof or the furnace wall are connected and fixed to the inner side of the ceramic fiber cotton module of the furnace roof wall through plenty of self-locking ceramic nails, the composite ceramic sheets of the furnace wall are connected and fixed to the inner side of the ceramic fiber cotton module of the furnace wall through plenty of self-locking ceramic nails.

8. The modular enclosure structure of the high-temperature heating furnace according to claim 1, wherein the top clamping structure is a crab-claw-shaped structure comprising: a base; two side walls which are formed by the corresponding two sides, extending upwards in a vertical direction, of the base; and two bent portions which are formed by the two side walls extending inwardly in a horizontal direction respectively, wherein, the two bent portions are supported on the upper surface of lower cross bar of each of the connecting I-beams, and the hoisting outer screw is slidably arranged along the length direction of each of the connecting I-beams.

9. The modular enclosure structure of the high-temperature heating furnace according to claim 7, wherein the self-locking ceramic nails of the furnace roof are penetrated through installation holes of the composite ceramic sheets of the furnace roof, and nail tips are exposed after the self-locking ceramic nails pierce the ceramic fiber cotton modules of the furnace roof, such that the composite ceramic sheets of the furnace roof are connected and fixed to the lower sides of the ceramic fiber cotton module of the furnace roof, the composite ceramic sheets of the furnace roof cover installation guide holes, and U-shaped clips are clamped and fixed to lower portions of the nail tips.

10. An installation method for a modular enclosure structure of a high-temperature heating furnace according to claim 1, comprising: assembling a furnace wall main truss and a furnace roof truss; fixing and installing wall module on the inner side of the furnace wall main truss, and installing a furnace wall inner protective lining of the furnace wall on the inner sides of the wall module, wherein the wall module comprises an outer shell steel plate, a ceramic fiber cotton felt and a ceramic fiber cotton module sequentially from the outside to the inside; and sliding hoisting outer screw in from lower cross bar of connecting I-beam at the bottom of the furnace roof truss and positioning the hoisting outer screw, connecting and fixing the ceramic fiber cotton module under the hoisting outer screw, then arranging a ceramic fiber cotton felt in a gap area between the ceramic fiber cotton module of the furnace roof and the connecting I-beams, and finally installing a furnace wall inner protective lining on the inner sides of the ceramic fiber cotton modules of the furnace roof.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG. 1 is a schematic diagram of the cross-sectional structure of a top furnace wall of the present invention;

[0039] FIG. 2 is a schematic diagram of the cross-sectional structure of a surrounding furnace wall of the present invention;

[0040] FIG. 3 is a schematic diagram of the cross-sectional structure of a wall module of the present invention;

[0041] FIG. 4 is a schematic diagram of an installation structure of a hoisting outer screw and a connecting I-beam of the present invention; and

[0042] FIG. 5 is an installation schematic top view of a U-shaped clip and a self-locking ceramic nail of the present invention;

[0043] The names corresponding to the serial numbers in the figures are as follows:

[0044] Furnace wall main trusses 1, furnace roof truss 2, ceramic fiber cotton felt 3, connecting I-beams 4, hoisting outer screws 5, ceramic fiber cotton modules 6, inner nuts 7, installation guide holes 8, small-diameter through holes 81, self-locking ceramic nails 9, nail tips 91, composite ceramic sheets 10, first connectors 11, wall modules 12, steel beam trusses 13, outer shell steel plates 14, second connectors 15, cylinder 16, lower threaded cylinders 17, necking junctions 18, crab-claw-shaped structures 19 and U-shaped clips 20.

DETAILED DESCRIPTION

[0045] A modular structure wall of a high-temperature heating furnace is shown in FIG. 1 to FIG. 5, and includes preset furnace wall main trusses 1 and a furnace roof truss 2, corresponding connecting I-beams 4 are respectively fixed on the bottom surface of the furnace roof truss 2, and top clamping structures of hoisting outer screws 5 are hooked with the bottoms of the connecting I-beams 4, [0046] the upper surfaces of ceramic fiber cotton modules 6 are uniformly distributed with upwardly convex hoisting outer screws 5, the ceramic fiber cotton modules 6 are installed on the lower surface of the furnace roof truss 2 through the hoisting outer screws 5, a gap is formed between the ceramic fiber cotton modules 6 and the lower surfaces of the connecting I-beams 4, a ceramic fiber cotton felt 3 is laid on the gap area between the ceramic fiber cotton modules 6 and the lower surfaces of the connecting I-beams 4, and an inner protective lining of the furnace wall is fixedly arranged on the lower surfaces of the ceramic fiber cotton modules 6; and [0047] each set of the furnace wall main trusses 1 located on the periphery is internally provided with first connectors 11 arranged in an array, and the inner sides of the first connectors 11 are respectively fixed to the outer surfaces of wall modules 12 of corresponding shapes, the inner surfaces of the wall modules 12 are fixedly provided with an inner protective lining of the furnace wall, and the wall modules 12 are composed of outer shell steel plates 14, the ceramic fiber cotton felt 3 and the ceramic fiber cotton modules 6 in sequence from the outside to the inside.

[0048] A plurality of steel beam frames 13 are evenly distributed in the surface area of the outer shell steel plates 14, the inner surfaces in the thickness direction of the adjacent steel beam frames 13 are covered with the corresponding outer shell steel plates 14, the inner end of each steel beam frame 13 in the thickness direction is fixedly connected to the ceramic fiber cotton modules 6 in the corresponding positions through second connectors 15, the space between the outer surfaces of the ceramic fiber cotton modules 6 and the inner surfaces of the outer shell steel plates 14 is filled with the ceramic fiber cotton felt 3, and the inner surfaces of the ceramic fiber cotton modules 6 are fixedly provided with an inner protective lining of the furnace wall; [0049] the steel beam frames 13 are stable plane truss structures formed by riveting and welding angle steel, square steel, flat steel, pipes and the like, the outer shell steel plates 14 are welded and riveted on the inner side area of the steel beam frames 13, the outer ends of the second connectors 15 are riveted or welded to the inner ends of the steel beam frames 13 in the thickness direction in an array, and the inner ends of the second connectors 15 are fixedly connected with a prime number of ceramic fiber cotton modules 6 in corresponding positions; [0050] the second connectors 15 are specifically bolts or screws made of a high-temperature resistant material; [0051] the furnace wall main trusses 1 is a stable truss structure formed by riveting and welding channel steel, I-beams, angle steel, square steel and pipes according to the design requirements, the first connectors 11 are riveted and welded in an array on the inner furnace sides of the furnace wall main trusses 1, and the furnace wall main trusses 1 form an outer frame of the periphery wall of the high-temperature heating furnace; [0052] the furnace roof truss 2 is a stable truss structure formed by riveting and welding channel steel, I-beams, angle steel, square steel and pipes according to design requirements, the bottom surface of the furnace roof truss 2 is provided with the connecting I-beams 4, and the furnace roof truss 2 forms an outer frame of the furnace top wall of the high-temperature heating furnace; [0053] the inner protective lining of the furnace wall is specifically composed of composite ceramic sheets 10, and the composite ceramic sheets 10 are fixedly arranged on the ceramic fiber cotton modules 6 through self-locking ceramic nails 9; [0054] each ceramic fiber cotton module 6 is provided with an installation guide hole 8, the outer side of each installation guide hole 8 is provided with a small-diameter through hole 81, and the diameter of each installation guide hole 8 is larger than that of the small-diameter through hole 81; [0055] when the ceramic fiber cotton modules 6 are used for side wall installation, inner protruding ends of the second connectors 15 are penetrated through the small-diameter through holes 81, then located in the installation guide holes 8 and connected with inner nuts 7 through threads, and the outer diameter of the inner nut 7 is larger than that of the small-diameter through hole 81; [0056] when the ceramic fiber cotton modules 6 are used for top wall installation, lower threaded cylinders 17 of the hoisting outer screws 5 are penetrated through the small-diameter through holes 81, then located in the installation guide holes 8 and connected with the inner nuts 7 through threads, the outer diameter of the inner nut 7 is larger than that of the small-diameter through hole 81, and therefore the upwardly convex hoisting outer screws 5 can be conveniently arranged on the ceramic fiber cotton modules 6 used for top wall installation; [0057] top clamping structures of the hoisting outer screws 5 are specifically upwardly convex crab-claw-shaped structures 19 which are symmetrically arranged and bent inwardly, wherein the top clamping structure is a crab-claw-shaped structure 19 comprising: a base; two side walls which are formed by the corresponding two sides, extending upwards in a vertical direction, of the base; and two bent portions which are formed by the two side walls extending inwardly in a horizontal direction respectively, wherein, the two bent portions are supported on the upper surface of lower cross bar of each of the connecting I-beams 4, and the hoisting outer screw 5 is slidably arranged along the length direction of each of the connecting I-beams 4. Paired inner bends of the crab-claw-shaped structures 19 are respectively supported by the upper surfaces of the two sides of lower cross bars of the connecting I-beams 4, the hoisting outer screws 5 are slidably arranged in the length direction of the connecting I-beams 4, and the corresponding positions are determined according to the positions of the hoisting outer screws 5; [0058] each hoisting outer screw 5 sequentially includes a crab-claw-shaped structure 19, a cylinder 16, a necking junction 18 and a lower threaded cylinder 17 from top to bottom, wherein the outer diameter of the lower threaded body 17 is smaller than that of the cylinder 16 so that the lower threaded body 17 can be conveniently inserted into the corresponding small-diameter through hole 81; [0059] when the composite ceramic sheets 10 are installed on the top wall, the self-locking ceramic nails 9 are penetrated through installation holes of the composite ceramic sheets 10 firstly, and then the composite ceramic sheets 10 are inserted from the lower ends of the ceramic fiber cotton modules 6, so that the composite ceramic sheets 10 cover the surface area of the installation guide holes 8, the self-locking ceramic nails 9 upwards penetrate the ceramic fiber cotton modules 6 by the thickness, then nail tips 91 protrude outwards, the U-shaped clips 20 clamp the lower end surfaces of the nail tips 91, and thus the self-locking ceramic nails 9 on the top wall are prevented from falling off; and [0060] the U-shaped clips 20 are specifically made in flat U shape machined with metal wires or ceramic materials, the width of U-shaped grooves is tightly matched with the diameter of the self-locking ceramic nails 9, and the groove depth is greater than the diameter of the self-locking ceramic nails.

[0061] An installation method of a modular structure wall of a high-temperature heating furnace is characterized in that other structures required by the design of the high-temperature heating furnace, as well as the position of a vent and a hard refractory structure near the vent are not changed, and only the materials, structures and the installation method of the surrounding furnace wall and the top furnace wall are changed, the surrounding furnace wall adopts wall modules instead of castable or refractory bricks adopted by traditional furnace walls, the wall modules are fixedly installed on the inner sides of furnace wall main trusses, and a furnace wall inner protective lining is installed on the inner furnace side of the wall modules; and the wall modules are composed of the outer shell steel plates, a ceramic fiber cotton felt and ceramic fiber cotton modules sequentially from the outside to the inside; [0062] the top furnace wall is hoisted by sliding the hoisting outer screws from the lower end surfaces of the connecting I-beams located on the inner side of the furnace roof truss, and installing the ceramic fiber cotton modules on the lower surface of the furnace roof truss through the hoisting outer screws, then the end surfaces of the I-beams are processed, the ceramic fiber cotton module felt is arranged on the upper layers of the I-beams, and finally an furnace wall inner protective lining is installed on the inner furnace side of the ceramic fiber cotton modules; and [0063] according to the design requirements, the furnace wall main trusses and the furnace wall roof truss are constructed on the high-temperature heating furnace site, then the wall modules are installed, the ceramic fiber cotton modules are hoisted, and finally a furnace wall lining is installed.

[0064] The wall modules, the inner protective lining of the furnace wall and the hoisting outer screws can be processed into finished products in advance at the production base outside the high-temperature heating furnace site, and then conveyed to the site where the high-temperature heating furnace needs to be built and installed to complete the furnace wall construction; the models of the ceramic fiber cotton felt and the ceramic fiber cotton modules can be selected from commercial products according to the temperature requirements of the high-temperature heating furnace; and [0065] the inner protective lining of the furnace wall is specifically a series product described in patent documents CN106839777A, CN103292598A, CN206682111U, and CN107726856A, and is mainly composed of composite ceramic sheets and self-locking ceramic nails, and the inner protective lining of the furnace wall is installed on the inner furnace sides of the wall modules and the top ceramic fiber cotton modules like an armor.

[0066] After the above technical solution is adopted, the high-temperature heating furnace can be constructed quickly and conveniently, the heat transfer efficiency in the furnace can be greatly improved, energy is saved, emission is reduced, the aging process of the furnace wall is slowed down, and the service life of the furnace wall is prolonged. In particular, high-temperature resistant castable furnace walls are replaced with those of the present invention, the advantages of reducing the weight of the wall and reducing the area of the furnace are achieved; meanwhile, the problem of cracks in the wall is avoided, and the wall heat dissipation and maintenance costs are greatly reduced; and the time of ignition temperature rise and shutdown temperature reduction is shortened, so that the non-productive time of the furnace is shortened.

[0067] For those skilled in the art, it is obvious that the present invention is not limited to the details of the foregoing exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore the present invention intends to encompass all changes within the meaning and scope of equivalent elements of the claims. Any reference symbols in the claims should not be regarded as limiting the claims involved.

[0068] In addition, it should be understood that although the specification is described in accordance with the implementation modes, not each implementation mode only includes an independent technical solution. This narration in the specification is only for clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in the various embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.