Water beam binding prefabricated part of hot rolling heating furnace

Abstract

The utility model belongs to the technical field of heating furnace water beams, and particularly relates to a hot rolling heating furnace water beam binding prefabricated part which comprises a prefabricated module. A plurality of counter bores which are oppositely arranged are formed in the middle parts of the first prefabricated part and the second prefabricated part; the water beam body comprises a connecting plate and two water beams, the two water beams are distributed in a spaced mode, the connecting plate is connected between the two water beams, the first prefabricated part and the second prefabricated part are arranged on the outer surfaces of the two water beams in a sleeving mode respectively, and a plurality of anchor bolts are arranged on the two side walls, opposite to the first prefabricated part and the second prefabricated part, of the connecting plate. The plurality of anchor bolts are arranged relative to the counter bores in the first prefabricated part and the second prefabricated part; and the outer ends of the anchor bolts penetrate through the counter bores and extend into the counter bores, and the outer ends of the anchor bolts are in threaded connection with nuts, so that disassembly and assembly of the prefabricated module are more convenient, and then local maintenance is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating furnace water beams, and in particular relates to a hot-rolled heating furnace water beam wrapped prefabricated part. Background Art

[0002] The slab heating furnace is the focus of energy consumption in the hot rolling process, accounting for about 70% of the energy consumption. For water beams and columns using vaporization cooling, water cooling heat loss accounts for 10% to 12% of the energy consumption of the heating furnace, which accounts for a considerable proportion of energy consumption. The existing water beam insulation solution adopts a double-layer coating structure of ceramic fiber blanket and refractory castable. Specifically, the inner layer uses a 20mm thick refractory fiber blanket, and the outer layer is a 50mm thick refractory castable. However, this structure usually has a service life of 2 to 3 years under the complex working conditions of the heating furnace, and local repairs are often required.

[0003] Among them, the prefabricated parts of refractory castables, due to their prefabricated characteristics, avoid the limitations of on-site construction conditions and have the characteristics of stable product quality. In order to enhance the structural strength, a number of heat-resistant steel anchor nails will be welded on the outer wall of the water pipe of the water beam for water beam wrapping prefabricated parts. The construction difficulties caused by the difference between the installation of prefabricated parts and the traditional water beam wrapping construction, and the welding anchor nails are not convenient for local repairs. Local repairs require on-site mold construction for repair. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a hot-rolling heating furnace water beam wrapping prefabricated part to solve the existing construction difficulties caused by the difference between the installation of prefabricated parts and the traditional water beam wrapping construction, and the welding anchor nails are not convenient for local repairs, and local repairs require on-site mold construction for repair.

[0005] The technical solution adopted by the utility model is as follows: a hot-rolled heating furnace water beam wrapped prefabricated part, including a prefabricated module, the prefabricated module includes a first prefabricated part and a second prefabricated part;

[0006] The first preform and the second preform are both provided with a plurality of countersunk holes arranged opposite to each other in the middle;

[0007] A water beam body, the water beam body comprising a connecting plate and two water beams, the two water beams are spaced apart, a connecting plate is connected between the two water beams, the first prefabricated part and the second prefabricated part are respectively sleeved on the outer surfaces of the two water beams, the connecting plate is provided with a plurality of anchor bolts on both side walls of the connecting plate relative to the first prefabricated part and the second prefabricated part, and the plurality of anchor bolts are provided relative to the countersunk holes on the first prefabricated part and the second prefabricated part;

[0008] The outer end of the anchor bolt passes through the countersunk hole and extends into the countersunk hole. The outer end of the anchor bolt is threadedly connected with a nut, and the inner end surface of the nut abuts against the bottom of the countersunk hole.

[0009] Furthermore, the water beam body also includes a pad, which is fixedly arranged on the outer side wall of any water beam, and the first prefabricated part and the second prefabricated part are respectively located on both sides of the pad, and the first prefabricated part and the second prefabricated part are fitted with an inverted trapezoidal gap on one side close to the pad.

[0010] Furthermore, the inverted trapezoidal gap between the first prefabricated part and the second prefabricated part is filled with a refractory plastic; and the countersunk hole is filled with a refractory plastic.

[0011] Furthermore, the first prefabricated component and the second prefabricated component have an inclined surface clearance fit at a side away from the cushion block, and the inclined surface clearance fit between the first prefabricated component and the second prefabricated component is filled with fire clay.

[0012] Furthermore, a plurality of the prefabricated modules are provided, and the plurality of the prefabricated modules are distributed in an array along the axial direction of the water beam, and adjacent prefabricated modules are fitted with a planar gap, and the planar gap fitting between adjacent prefabricated modules is filled with fire clay.

[0013] Furthermore, a heat insulation layer is provided between the water beam body and the prefabricated module, and the heat insulation layer is formed by filling a ceramic fiber blanket.

[0014] Beneficial effects of the utility model:

[0015] The anchor bolts required by the prefabricated module are set on the two side walls of the connecting plate to complete the positioning, and then the anchor bolts are matched with the corresponding countersunk holes on the first prefabricated part and the second prefabricated part. The outer end of the anchor bolt passes through the countersunk hole and extends into the countersunk hole, and is fastened to the anchor bolt by a nut. The coordinated use of the countersunk hole, anchor bolt and nut makes the disassembly and assembly of the first prefabricated part and the second prefabricated part more convenient, which is convenient for local maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the AA direction;

[0018] The attached drawings are marked as follows:

[0019] Prefabricated module 1, first prefabricated part 11, second prefabricated part 12, countersunk hole 13, water beam body 2, connecting plate 21, water beam 22, anchor bolts 23, nuts 24, spacers 25, inverted trapezoidal gap 3, inclined gap 4, plane gap 5, thermal insulation layer 6. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiment 1:

[0024] like Figure 1-2 As shown, a hot-rolled heating furnace water beam wrapped prefabricated part includes a prefabricated module 1, and the prefabricated module 1 includes a first prefabricated part 11 and a second prefabricated part 12;

[0025] The first preform 11 and the second preform 12 are both provided with a plurality of countersunk holes 13 disposed opposite to each other in the middle.

[0026] The water beam body 2 comprises a connecting plate 21 and two water beams 22, the two water beams 22 are spaced apart, a connecting plate 21 is connected between the two water beams 22, the first prefabricated member 11 and the second prefabricated member 12 are respectively sleeved on the outer surfaces of the two water beams 22, the connecting plate 21 is provided with a plurality of anchor bolts 23 on both side walls relative to the first prefabricated member 11 and the second prefabricated member 12, and the plurality of anchor bolts 23 are provided relative to the countersunk holes 13 on the first prefabricated member 11 and the second prefabricated member 12; in the present embodiment, two countersunk holes 13 are provided in the middle of the first prefabricated member 11 and the second prefabricated member 12, and two anchor bolts 23 are provided on both side walls of the connecting plate 21 relative to the first prefabricated member 11 and the second prefabricated member 12 for installation cooperation between the anchor bolts 23 and the first prefabricated member 11 and the second prefabricated member 12.

[0027] The outer end of the anchor bolt 23 passes through the countersunk hole 13 and extends into the countersunk hole 13. The outer end of the anchor bolt 23 is threadedly connected with a nut 24, and the inner end surface of the nut 24 abuts against the bottom of the countersunk hole 13. In this embodiment, the connecting plate 21 is a steel plate, which is used to increase the structural strength between the two water beams 22.

[0028] As a preferred solution, the water beam body 2 also includes a pad 25, which is fixedly arranged on the outer side wall of any water beam 22, and the first prefabricated part 11 and the second prefabricated part 12 are respectively located on both sides of the pad 25, and the first prefabricated part 11 and the second prefabricated part 12 are matched with an inverted trapezoidal gap 3 on the side close to the pad 25. In this embodiment, the pad 25 is welded on the outer side wall of the upper water beam 22 to support the steel billet, and the inverted trapezoidal gap 3 is easy to fill. The inverted trapezoidal gap 3 helps to enhance the insulation performance between the wrapped prefabricated part and the furnace rib tube, and can buffer the vibration force and thermal stress generated by the furnace temperature fluctuation during the steel pushing process of the wrapped block, and prevent the wrapped block from cracking due to excessive force. In this embodiment, the first prefabricated part 11 and the second prefabricated part 12 are matched with an inverted trapezoidal gap 3 on the side close to the pad 25 to form a multi-prism trapezoidal space, the minimum spacing of the inverted trapezoidal gap 3 is greater than 10mm, and the spacing between the inverted trapezoidal gap 3 and the pad 25 is greater than 5mm.

[0029] As a preferred embodiment, the first prefabricated part 11 and the second prefabricated part 12 are filled with refractory plastic at the fitting part of the inverted trapezoidal gap 3; and the countersunk hole 13 is filled with refractory plastic. Refractory plastic is an amorphous refractory material with good plasticity, which is composed of refractory aggregate and powder, raw clay, chemical composite binder and admixture. This material is extruded into a brick shape after preparation and mixing, and can still maintain its plasticity after being packaged and stored for a period of time. It is usually constructed by tamping, and can withstand rapid changes in temperature without being easily damaged. In this embodiment, a pad 25 is provided in the inverted trapezoidal gap 3, and a nut 24 is provided in the countersunk hole 13. Therefore, by utilizing the plasticity of the refractory plastic, tamping and shaping can be conveniently performed, thereby facilitating the filling of the inverted trapezoidal gap 3 and the countersunk hole 13, and the surface of the inverted trapezoidal gap 3 and the countersunk hole 13 is smoothed.

[0030] As a preferred solution, the first prefabricated part 11 and the second prefabricated part 12 are matched with a bevel gap 4 on the side away from the cushion block 25, with a spacing of 2mm-5mm, and the first prefabricated part 11 and the second prefabricated part 12 are filled with fire mud at the matching place of the bevel gap 4. The bevel gap 4 helps to buffer the vibration force of the wrapping block during the steel pushing process and the thermal stress generated by the furnace temperature fluctuation, and prevents the wrapping block from cracking due to excessive force. The first prefabricated part 11 and the second prefabricated part 12 are filled with fire mud at the matching place of the bevel gap 4. The fire mud is mainly composed of refractory powder and additives, and is used as a caulking material for refractory product masonry. In a high-temperature industrial environment, the fire mud as a binder can maintain the firm bonding effect of the first prefabricated part 11 and the second prefabricated part 12, and can maintain the stability of the structure and function of the first prefabricated part 11 and the second prefabricated part 12 even at high temperatures.

[0031] As a preferred solution, several prefabricated modules 1 are provided, and the prefabricated modules 1 are distributed in an array along the axial direction of the water beam 22. There are planar gaps 5 between adjacent prefabricated modules 1, and the spacing is 2mm-5mm. The planar gaps 5 between adjacent prefabricated modules 1 are filled with fire mud. The planar gaps 5 between adjacent prefabricated modules 1 make the prefabricated modules 1 independent of each other and do not affect each other, which is convenient for separate maintenance; there is enough space between the prefabricated modules 1 to allow for dimensional deviations of the prefabricated parts. Fire mud is used to fill the planar gaps 5 between adjacent prefabricated modules 1 as a caulking material. In a high-temperature industrial environment, fire mud as a binder can maintain a firm bonding effect between adjacent prefabricated modules 1, and can maintain the stability of the structure and function of adjacent prefabricated modules 1 even at high temperatures.

[0032] As a preferred solution, a heat insulation layer 6 is provided between the water beam body 2 and the prefabricated module 1, and the heat insulation layer 6 is formed by filling with a ceramic fiber blanket. The inner side of the prefabricated part is wrapped with a ceramic fiber blanket as a heat insulation material, which is usually wrapped by cutting and gluing. The ceramic fiber blanket is a highly efficient heat insulation material that can significantly reduce the loss of heat energy. The use of a ceramic fiber blanket in the water beam 22 prefabricated part can effectively reduce the loss of heat in the furnace through the water beam 22, thereby improving the heating efficiency.

[0033] The working mode of the utility model is as follows:

[0034] When in use, all the original wrapping of the water beam 22 of the hot rolling heating furnace is removed, the anchor nails welded on the surface of the water beam 22 are cut off, and the anchor bolts 23 required by the prefabricated module 1 are welded to the left and right side walls of the connecting plate 21 to complete the positioning. The ceramic fiber blanket is wrapped on the inner side of the prefabricated module 1 by cutting and gluing. Before the prefabricated module 1 is installed, the inclined gap 4 of the first prefabricated part 11 and the second prefabricated part 12 and the plane gap 5 between the adjacent prefabricated modules 1 need to be smeared with fire mud, so that the inclined gap 4 and the plane gap 5 are filled with fire mud, and then the anchor bolts 23 and the first prefabricated part 11 and the second prefabricated part 12 are smeared with fire mud. The corresponding countersunk holes 13 on the prefabricated part 11 and the second prefabricated part 12 match, the outer end of the anchor bolt 23 passes through the countersunk hole 13 and extends into the countersunk hole 13, and is fastened to the anchor bolt 23 through the nut 24. The coordinated use of the countersunk hole 13, the anchor bolt 23 and the nut 24 makes the disassembly and assembly of the prefabricated module 1 more convenient, and the inverted trapezoidal gap 3 and the countersunk hole 13 are filled with refractory plastic, and the surface is smoothed. The above steps are repeated to complete the installation of several prefabricated modules 1 along the axial direction of the water beam 22, so that the prefabricated modules 1 can be independent of each other and do not affect each other, which is convenient for local maintenance.

[0035] The utility model is described in detail above. The description of the specific embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A hot rolling heating furnace water beam wrapped prefabricated part, characterized in that: include A prefabricated module (1), the prefabricated module (1) comprising a first prefabricated component (11) and a second prefabricated component (12); The first preform (11) and the second preform (12) are both provided with a plurality of countersunk holes (13) arranged opposite to each other in the middle; A water beam body (2), the water beam body (2) comprising a connecting plate (21) and two water beams (22), the two water beams (22) being spaced apart, the connecting plate (21) being connected between the two water beams (22), the first prefabricated part (11) and the second prefabricated part (12) being respectively sleeved on the outer surfaces of the two water beams (22), the connecting plate (21) being provided with a plurality of anchor bolts (23) on both side walls relative to the first prefabricated part (11) and the second prefabricated part (12), the plurality of anchor bolts (23) being provided relative to the countersunk holes (13) on the first prefabricated part (11) and the second prefabricated part (12); The outer end of the anchor bolt (23) passes through the countersunk hole (13) and extends into the countersunk hole (13). The outer end of the anchor bolt (23) is threadedly connected to a nut (24), and the inner end surface of the nut (24) abuts against the inner bottom of the countersunk hole (13).

2. A hot rolling heating furnace water beam (22) wrapping prefabricated part according to claim 1, characterized in that: The water beam body (2) further comprises a cushion block (25), wherein the cushion block (25) is fixedly arranged on the outer side wall of any water beam (22), wherein the first prefabricated component (11) and the second prefabricated component (12) are respectively located on both sides of the cushion block (25), and the first prefabricated component (11) and the second prefabricated component (12) are matched with an inverted trapezoidal gap (3) on one side close to the cushion block (25).

3. A hot rolling heating furnace water beam (22) wrapped prefabricated part according to claim 2, characterized in that: The inverted trapezoidal gap (3) between the first preform (11) and the second preform (12) is filled with a refractory plastic; and the countersunk hole (13) is filled with a refractory plastic.

4. A hot rolling heating furnace water beam (22) wrapping prefabricated part according to claim 1, characterized in that: The first preform (11) and the second preform (12) are matched with each other in a bevel gap (4) on the side away from the cushion block (25), and the bevel gap (4) between the first preform (11) and the second preform (12) is filled with fire clay.

5. The hot rolling heating furnace water beam (22) wrapped prefabricated part according to claim 1, characterized in that: A plurality of the prefabricated modules (1) are provided, and the plurality of the prefabricated modules (1) are distributed in an array along the axial direction of the water beam (22), and adjacent prefabricated modules (1) are matched with planar gaps (5), and the planar gaps (5) between adjacent prefabricated modules (1) are filled with fire clay.

6. A hot rolling heating furnace water beam (22) wrapping prefabricated part according to claim 1, characterized in that: A heat insulation layer (6) is provided between the water beam body (2) and the prefabricated module (1), and the heat insulation layer (6) is formed by filling a ceramic fiber blanket.

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