Industrial furnace and lining joint structure

Abstract

The utility model relates to the technical field of thermal equipment, and discloses an industrial furnace and lining joint structure which comprises a plurality of corner modules, embedded anchoring parts are arranged in the corner modules, the embedded anchoring parts are connected to a furnace wall plate through anchoring parts, positioning steps are arranged at the bottoms of the corner modules, and the positioning steps are arranged on the corner modules. The positioning step is used for being in lap joint with a lining at the bottom of the transition section so as to cover the expansion gap. The corner modules are connected to the furnace wall plate through the embedded anchoring parts, a supporting plate and joint pressing bricks are omitted, the structure is simple, construction is convenient and fast, and the corrosion resistance and the heat preservation and insulation capacity are good.

Description

Technical Field

[0001] This utility model relates to the field of thermal equipment technology, and more specifically, to a lining connection structure. Furthermore, this utility model also provides an industrial furnace including the aforementioned lining connection structure. Background Technology

[0002] Please refer to Figure 1 The lining structure of the industrial furnace includes a radiant section 110 and a transition section 120. The bottom of the transition section 121 can serve as a load-bearing structure for maintenance and is usually made of fiberboard and brick. The radiant section 110 is usually made of ceramic fiber module structure. The connection between the two is usually made of castable material.

[0003] To prevent cracking and detachment of the lining structure at the junction of the radiant section 110 and the transition section 120, expansion joints are required between the castable structure and the refractory materials on both sides. Due to the high wind speed in the transition section 120, pressure bricks are required to prevent the fiber blankets in the expansion joints from being blown out. However, there is a risk of these pressure bricks falling during construction. At the same time, the expansion joints are exposed inside the furnace, resulting in poor corrosion resistance and making them prone to residual stress and even cracks due to thermal expansion and contraction and uneven cooling. This not only affects the service life of the refractory materials on both sides but may also pose a serious threat to the stability and safety of the industrial furnace.

[0004] In addition, the lining joints use a castable structure, which needs to be cast in an industrial furnace during construction, resulting in many construction steps and a long construction period.

[0005] In summary, finding a lining connection structure that is easy to construct and has good corrosion resistance and thermal insulation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a lining connection structure in which the corner module is connected to the furnace wall panel by pre-embedded anchors, and the positioning step of the corner module can overlap with the lining at the bottom of the transition section to cover the expansion joint. The structure is simple, easy to construct, and has good corrosion resistance and thermal insulation capabilities.

[0007] In addition, this utility model also provides an industrial furnace including the above-mentioned lining connection structure.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A lining connection structure includes several corner modules, each corner module having a pre-embedded anchor that is connected to a furnace wall panel via the anchor. The bottom of each corner module has a positioning step that abuts against the inner surface of the transition section bottom of the furnace wall panel to cover the expansion joint.

[0010] Preferably, the corner module is formed by stacking several layers of heat insulation, and the outer periphery of the corner module is provided with strapping straps for binding and fixing each layer of heat insulation.

[0011] Preferably, the outer surface of the corner module is provided with a high-temperature heat protection coating, which is used to enhance the corner module's resistance to wind erosion and high-temperature performance.

[0012] Preferably, the thickness of the high-temperature heat protection coating is 8-12 mm.

[0013] Preferably, a horizontal connector is provided between each two adjacent corner modules, and the horizontal connector is used to connect the two adjacent corner modules.

[0014] Preferably, the horizontal connector includes at least one through-rib, and the length L of the through-rib is greater than the length l of the corner module.

[0015] Preferably, the pre-embedded anchor includes an L-shaped connecting plate, one end of which is inserted between two adjacent insulation layers, the other end of which is provided with a connecting hole for connecting with the anchor, and the end of the L-shaped connecting plate inserted into the insulation layer is provided with a positioning hole for the horizontal connector to pass through.

[0016] Preferably, the L-shaped connecting plate is inserted between the two outermost heat insulation layers of two adjacent corner modules, or the L-shaped connecting plate is inserted between the outermost heat insulation layer and the next outermost heat insulation layer of the same corner module.

[0017] Preferably, the anchor includes a connecting bolt, which passes through the first locking nut and the connecting hole of the L-shaped connecting plate in sequence and is then threadedly connected to the second locking nut.

[0018] An industrial furnace includes a furnace wall panel, the furnace wall panel including a radiant section, a transition section and a connecting section for connecting the radiant section and the transition section, the connecting section being a lining connection structure as described in any of the preceding claims.

[0019] The lining connection structure provided by this utility model has a corner module connected to the furnace wall panel by pre-embedded anchors, eliminating the need for a support plate to support the corner module. The structure is simple and easy to construct. The positioning step of the corner module can overlap with the lining at the bottom of the transition section to cover the expansion joint, eliminating the need for a joint brick structure and effectively preventing the insulation materials such as fiber blankets in the expansion joint from being blown out, thereby ensuring the corrosion resistance and thermal insulation capacity of the lining connection structure.

[0020] In addition, this utility model also provides an industrial furnace including the above-mentioned lining connection structure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an industrial furnace lining in the prior art;

[0023] Figure 2 A schematic diagram of a specific embodiment of the lining connection structure provided by this utility model;

[0024] Figure 3 This is a structural diagram of the corner module;

[0025] Figure 4 This is a schematic diagram of the assembly of the corner module and the lining at the bottom of the transition section.

[0026] Figures 1-4 middle:

[0027] 1-Corner module; 11-Insulation layer; 12-High temperature heat protection coating; 13-Bundling strap; 14-Rigid protective sheet; 2-L-shaped connecting plate; 3-Through reinforcement; 4-Connecting bolt; 100-Furnace wall panel; 110-Radiation section; 120-Transition section; 121-Bottom of transition section. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The core of this utility model is to provide a lining connection structure. The corner module is connected to the furnace wall panel through pre-embedded anchors, and the positioning step of the corner module can overlap with the lining at the bottom of the transition section to cover the expansion joint. The structure is simple, easy to construct, and has good corrosion resistance and thermal insulation capabilities.

[0030] In addition, this utility model also provides an industrial furnace including the above-mentioned lining connection structure.

[0031] The lining connection structure provided by this utility model includes several corner modules 1. The corner module 1 is provided with pre-embedded anchors, which are connected to the furnace wall panel 100 through the anchors. The bottom of the corner module 1 is provided with a positioning step, which is used to overlap with the lining of the transition section bottom 121 so as to cover the expansion joint.

[0032] Please refer to Figure 2 The corner module 1 is fixed to the furnace wall panel 100 by pre-embedded anchors and the connection of anchors. In order to facilitate the construction of the lining connection, the corner module 1 is pre-formed in the factory by common fireproof materials such as ceramic fiber. The specific forming method of the corner module 1 is not limited. It can be integrally formed or stacked.

[0033] The pre-embedded anchors are embedded in the corner module 1 by means of plugging and other methods. The pre-embedded anchors and the anchors of the furnace wall panel 100 are mostly connected by means of bolts, welding and other methods to ensure the stable and reliable installation of the corner module 1.

[0034] The bottom of corner module 1 is provided with a positioning step, and an expansion joint is reserved at the lower part of the positioning step. The positioning step can overlap with the lining of the transition section bottom 121 to cover the expansion joint below, thereby preventing the fiber blanket inside the expansion joint from being blown out. Figure 4 As shown.

[0035] In addition, the positioning step of corner module 1 can also serve as a height positioning function, restricting the movement of corner module 1 in the height direction.

[0036] The width of the expansion joint is determined based on the temperature variation range of the industrial furnace in actual production, the material of the furnace wall panel 100, and the material of the corner module 1, so as to ensure that the expansion joint can meet the thermal stress release needs of the structures on both sides; the specific type of insulation material filled in the expansion joint can be determined with reference to existing technology, and will not be elaborated here.

[0037] The dimensions of the positioning step of corner module 1 are determined based on the width of the expansion joint and the designed overlap width between the positioning step and the inner surface of the transition section bottom 121 in actual production, so as to ensure the installation stability of corner module 1.

[0038] In this embodiment, the corner module 1 is connected to the furnace wall panel 100 by pre-embedded anchors. There is no need to set up a support plate to support the corner module 1. The structure is simple and easy to construct. The positioning step of the corner module 1 can overlap with the lining of the bottom of the transition section 121 and cover the expansion joint reserved below. This eliminates the need for the joint brick structure and effectively prevents the insulation materials such as fiber blankets in the expansion joint from being blown out, thereby ensuring the corrosion resistance and thermal insulation capacity of the structure at the lining connection.

[0039] Based on the above embodiments, the structure of the corner module 1 is defined. The corner module 1 is formed by stacking several layers of heat insulation layers 11. The outer periphery of the corner module 1 is provided with a strapping strap 13, which is used to tie and fix each layer of heat insulation layers 11.

[0040] Please refer to Figure 3 Multiple layers of insulation 11 are stacked sequentially and then secured with strapping 13 to form a corner module 1. The insulation layers 11 are made of insulation material, such as... Figure 3 The insulation layer 11 is made of fiber blanket, and the binding strap 13 can be replaced by clamps, wire ropes or similar structures.

[0041] To facilitate the forming of the corner module 11, it is preferable to provide a rigid protective sheet 14, such as a wooden protective sheet or a plastic protective sheet, on the outermost heat insulation layer 11. The rigid protective sheet 14 can assist the internal multi-layer heat insulation layers 11 in alignment so that the corner module 11 can be formed more quickly. After the corner module 11 is installed in the industrial furnace, the binding strap 13 can be cut and the protective sheet 14 can be pulled out to complete the assembly process.

[0042] In this embodiment, the corner module 1 is formed by stacking and bundling multiple layers of heat insulation 11, which is easier to manufacture and lower in cost compared to integral molding.

[0043] Preferably, a high-temperature thermal protection coating 12 can be provided on the outer surface of the corner module 1. The high-temperature thermal protection coating 12 is used to enhance the wind erosion resistance and high temperature resistance of the corner module 1, thereby reducing the high-temperature linear shrinkage rate of the corner module 1 so as to better adapt to the high-temperature and high-wind-speed thermal environment.

[0044] The thickness of the high-temperature heat protection coating 12 is preferably set to 8-12 mm. In a specific embodiment, the thickness of the high-temperature heat protection coating 12 is 10 mm.

[0045] Based on the above embodiments, in order to better fix the corner module 1, a horizontal connector can be provided between two adjacent corner modules 1. The horizontal connector is used to connect two adjacent corner modules 1, thereby enhancing the installation stability of the corner module 1.

[0046] The horizontal connector is preferably arranged along the extension direction of the corner module 1, such as... Figure 2 As shown; the horizontal connector can be specifically set as a through rib 3, etc., and is usually connected to two adjacent corner modules 1 by plugging in, which is convenient and easy to operate.

[0047] Considering that the longer the horizontal connector is, the more difficult the assembly becomes in order to avoid the horizontal connector going directly through the corner module 1, it is preferable that the horizontal connector includes at least one through rib 3, the length L of the through rib 3 is greater than the length l of the corner module 1, and it is usually set that the length L of the through rib 3 and the length l of the corner module 1 satisfy L=l+50mm.

[0048] Based on the above embodiments, the pre-embedded anchor can be provided, including an L-shaped connecting plate 2. One end of the L-shaped connecting plate 2 is inserted between two adjacent heat insulation layers 11, and the other end of the L-shaped connecting plate 2 is provided with a connecting hole for connecting with the anchor. The end of the L-shaped connecting plate 2 inserted into the heat insulation layer 11 is provided with a positioning hole for the horizontal connector to pass through.

[0049] The L-shaped connecting plate 2 and the anchor can be connected by bolts, welding or other means. The L-shaped connecting plate 2 is plugged into the horizontal connecting piece to position the horizontal connecting piece and prevent the horizontal connecting piece from only going into the corner module 1 on one side.

[0050] For easier installation of the horizontal connectors, please refer to... Figure 2 The L-shaped connecting plate 2 is inserted between the two outermost heat insulation layers 11 of two adjacent corner modules 1, or the L-shaped connecting plate 2 is inserted between the outermost heat insulation layer 11 and the second outermost heat insulation layer 11 of the same corner module 1, so that horizontal connecting parts such as through rods 3 can be inserted through the corner module 1 and inserted into the adjacent corner module 1, thereby completing the secondary fixation between the corner modules 1.

[0051] Therefore, one end of the L-shaped connecting plate 2 can be connected to the furnace wall panel 100 through anchors, and the other end can be connected to the adjacent corner module 1 through horizontal connectors. Thus, the L-shaped connecting plate 2 simultaneously achieves the connection between the corner module 1 and the furnace wall panel 1, and the secondary fixation between adjacent corner modules 1, ensuring the installation stability and reliability of the corner module 1.

[0052] Preferably, in order to facilitate the adjustment of the distance between the corner module 1 and the inner wall surface of the furnace wall panel 100, an anchor can be provided, including a connecting bolt 4. The connecting bolt 4 passes through the connecting hole of the first locking nut and the L-shaped connecting plate 2 in sequence and is then threadedly connected to the second locking nut.

[0053] Double locking nuts are installed on both sides of the L-shaped connecting plate 2. The distance between the corner module 1 and the inner wall of the furnace wall plate 100 can be adjusted by turning the locking nuts on both sides. The structure is simple and the adjustment is convenient.

[0054] In addition to the above-mentioned lining connection structure, this utility model also provides an industrial furnace including the lining connection structure disclosed in the above embodiments. The industrial furnace includes a furnace wall panel 100, which includes a radiant section 110, a transition section 120, and a connecting section for connecting the radiant section 110 and the transition section 120. The connecting section is the lining connection structure disclosed in the above embodiments. For the structure of other parts of the industrial furnace, please refer to the prior art, which will not be repeated here.

[0055] It should be noted that the "first" and "second" in the first and second locking nuts mentioned in this application are only used to distinguish the different positions and do not contain any limitation on the order.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0057] The above provides a detailed description of the industrial furnace and lining connection structure provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A lining joint structure, characterized in that, It includes several corner modules (1), each corner module (1) is provided with a pre-embedded anchor, which is connected to the furnace wall panel (100) by the anchor. The bottom of the corner module (1) is provided with a positioning step, which is used to overlap with the lining of the bottom of the transition section (121) so as to cover the expansion joint.

2. The lining connection structure according to claim 1, characterized in that, The corner module (2) is formed by stacking several layers of heat insulation layers (11). The corner module (1) is provided with a strapping strap (13) on its outer periphery. The strapping strap (13) is used to tie and fix each layer of heat insulation layer (11).

3. The lining connection structure according to claim 2, characterized in that, The outer surface of the corner module (1) is provided with a high-temperature heat protection coating (12), which is used to enhance the wind erosion resistance and high temperature resistance of the corner module (1).

4. The lining connection structure according to claim 3, characterized in that, The thickness of the high-temperature heat protection coating (12) is 8-12 mm.

5. The lining connection structure according to any one of claims 1-4, characterized in that, A horizontal connector is provided between each of the two adjacent corner modules (1), and the horizontal connector is used to connect the two adjacent corner modules (1).

6. The lining connection structure according to claim 5, characterized in that, The horizontal connector includes at least one through rib (3), the length L of which is greater than the length l of the corner module (1).

7. The lining connection structure according to claim 5, characterized in that, The pre-embedded anchor includes an L-shaped connecting plate (2), one end of which is inserted between two adjacent heat insulation layers (11), the other end of which is provided with a connecting hole for connecting with the anchor, and the end of which is inserted into the heat insulation layer (11) is provided with a positioning hole for the horizontal connector to pass through.

8. The lining connection structure according to claim 7, characterized in that, The L-shaped connecting plate (2) is inserted between the two outermost heat insulation layers (11) of two adjacent corner modules (1), or the L-shaped connecting plate (2) is inserted between the outermost heat insulation layer (11) and the next outermost heat insulation layer (11) of the same corner module (1).

9. The lining connection structure according to claim 7, characterized in that, The anchor includes a connecting bolt (4), which passes through the first locking nut and the connecting hole of the L-shaped connecting plate (2) in sequence and is then threadedly connected to the second locking nut.

10. An industrial furnace, characterized in that, The furnace wall panel (100) includes a radiant section (110), a transition section (120), and a connecting section for connecting the radiant section (110) and the transition section (120), wherein the connecting section is the lining connection structure as described in any one of claims 1-9.

Images