Castable high-temperature-resistant heating furnace lining

Abstract

The utility model relates to a castable high-temperature-resistant heating furnace lining which comprises precast blocks, reinforcing frames and screw rods, the reinforcing frames are pre-buried in the precast blocks when the precast blocks are manufactured, and the precast blocks are divided into a precast block type I and a precast block type II according to different reinforcing frames in the precast blocks. The first precast blocks and the second precast blocks are arranged in a staggered mode to form a cylindrical furnace lining, and the connecting screws are used for fixing the first precast blocks and the second precast blocks which are adjacent to each other. According to the utility model, the material strength of the precast block can be enhanced through the reinforcing frame pre-embedded in the precast block; on the basis of the special structure of the prefabricated part, butt joint between the prefabricated blocks is firm, and meanwhile the overall strength and the structural stability of the furnace lining can be enhanced through the screws used for connecting and fixing between the prefabricated blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace linings, in particular to a castable high-temperature resistant heating furnace lining. Background Art

[0002] Precast blocks are a common refractory material, which is cast by casting refractory castables of corresponding materials. Compared with the scheme of building furnace lining with refractory bricks or directly using refractory castables to cast furnace lining, the use of precast blocks of refractory castables to build furnace lining has the advantages of convenient construction, fast construction speed, strong and durable lining, and reduced maintenance times.

[0003] However, there are also certain disadvantages in using refractory castable prefabricated blocks to build the furnace lining, such as low overall strength of the built furnace lining and poor overall structural stability of the furnace lining. Utility Model Content

[0004] The utility model aims to provide a high temperature resistant heating furnace lining of a castable material, which is used to solve the above problems existing in the prior art.

[0005] In order to solve the above problems, the utility model provides a castable high-temperature resistant heating furnace lining, including a prefabricated block, a reinforcement frame and a screw rod. The reinforcement frame is embedded in the prefabricated block when the prefabricated block is manufactured. The prefabricated block is divided into a type I prefabricated block and a type II prefabricated block according to the difference of the reinforcement frame therein. The type I prefabricated block and the type II prefabricated block are staggered to form a cylindrical furnace lining. The screw rod is used to fix the adjacent type I prefabricated block and the type II prefabricated block.

[0006] The castable high temperature resistant heating furnace lining provided by the utility model also has the following technical features:

[0007] Furthermore, the prefabricated blocks are provided with arc protrusions, straight protrusions, arc grooves and straight grooves; among two adjacent prefabricated blocks arranged axially along the furnace lining, the arc protrusion of one can be embedded in the arc groove of the other; among two adjacent prefabricated blocks arranged circumferentially along the furnace lining, the straight protrusion of one can be embedded in the straight groove of the other.

[0008] Furthermore, the prefabricated block is provided with two installation arc grooves penetrating the prefabricated block along the circumferential direction of the furnace lining, and two installation straight grooves penetrating the prefabricated block along the axial direction of the furnace lining, the installation arc grooves penetrating the straight protrusions, and the installation straight grooves penetrating the arc protrusions.

[0009] Furthermore, the reinforcing frame is arranged in the installation arc groove and the installation straight groove, and the reinforcing frame is welded into a "well" shape by four hollow tubes, including an arc-shaped long tube, an arc-shaped short tube, a straight long tube and a straight short tube, and a rectangular block is provided at one end of the arc-shaped long tube and the straight long tube.

[0010] Furthermore, in the same prefabricated block, the arc-shaped long tube 21 and the arc-shaped short tube 22 are both on the same circumferential line coaxial with the furnace lining, that is, the radii of the two are equal; the straight long tube and the straight short tube are perpendicular to the central axis of the furnace lining and are at equal distances from the central axis of the furnace lining.

[0011] Furthermore, the prefabricated block in which the arc-shaped long tube is farther from the arc bulge than the arc-shaped short tube is the prefabricated block type I, and the prefabricated block in which the arc-shaped long tube is closer to the arc bulge than the arc-shaped short tube is the prefabricated block type II.

[0012] Furthermore, in two adjacent prefabricated blocks arranged circumferentially, the inner cavities of the arc-shaped long tube of one and the arc-shaped short tube of the other are connected; in two adjacent prefabricated blocks arranged radially, the inner cavities of the straight long tube of one and the straight short tube of the other are connected.

[0013] Furthermore, the screw includes an arc-shaped screw and a straight screw. The arc-shaped screw is used to be inserted into the arc-shaped long tube and the arc-shaped short tube in the adjacent prefabricated blocks and cooperate with a nut to fix the two together. The straight screw is used to be inserted into the straight long tube and the straight short tube in the adjacent prefabricated blocks and cooperate with a nut to fix the two together. The screw head of the screw is embedded in the rectangular block.

[0014] Furthermore, nut avoidance grooves are provided on the arc convex block and the straight convex block, and rectangular block avoidance grooves are provided in the arc concave groove and the straight concave groove.

[0015] Furthermore, the arc groove and the straight groove are connected and both pass through the prefabricated block, and the arc convex block and the straight convex block are connected.

[0016] The utility model has the following beneficial effects: the material strength of the prefabricated block can be strengthened by pre-embedded reinforcing frames in the prefabricated block; based on the special structure of the prefabricated parts, the butt joint between the prefabricated blocks is also relatively firm, and the overall strength and structural stability of the furnace lining can be strengthened by connecting and fixing screws between the prefabricated blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure decomposition of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the prefabricated block of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the prefabricated block of the utility model from another angle;

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the prefabricated block of the utility model from another angle;

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the prefabricated block of the utility model from another angle;

[0023] Figure 7 It is a schematic diagram of the circumferential assembly of the utility model. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0025] like Figure 1 , Figure 2 As shown, Figure 1 It is a schematic diagram of the overall structure of the utility model. Figure 2 It is a schematic diagram of structural decomposition; in the figure, the castable high-temperature resistant heating furnace lining of the utility model includes a prefabricated block 1, a reinforcement frame 2 and a screw 3. The reinforcement frame 2 is embedded in the prefabricated block 1 when the prefabricated block 1 is manufactured, and the reinforcement frame 2 plays a role in strengthening the overall structural strength of the prefabricated block 1; the prefabricated block 1 is divided into a prefabricated block type 11 and a prefabricated block type 2 12 according to the difference of the reinforcement frame 2 therein, and the prefabricated block type 11 and the prefabricated block type 2 12 are staggered to form a cylindrical furnace lining, and the screw 3 is used to fix the adjacent prefabricated blocks type 11 and prefabricated blocks type 2 12; among the six faces of the prefabricated block 1, except for the two curved surfaces that constitute the inner and outer surfaces of the furnace lining, the remaining four planes are connected to another type of prefabricated block 1, that is, the four planes of the prefabricated block type 11 are fixedly connected to four prefabricated blocks type 2 12, and vice versa. The material strength of the prefabricated block 1 can be enhanced by pre-embedded reinforcement frames 2 , and the overall strength and structural stability of the furnace lining can be enhanced by connecting fixing screws 3 between the prefabricated blocks 1 .

[0026] Figures 3 to 6 The three-dimensional views of the prefabricated block type 11 and the prefabricated block type 2 12 at four angles ( Figure 3 The arc protrusion 101 faces forward. Figure 4 The straight protrusion 102 faces forward. Figure 5 The arc groove 103 faces forward. Figure 6104 is forward), in the figure, the prefabricated block 1 is provided with an arc protrusion 101, a straight protrusion 102, an arc groove 103 and a straight groove 104, and the prefabricated block type 11 and the prefabricated block type 2 12 are all like this, and the positional relationship of the arc protrusion 101, the straight protrusion 102, the arc groove 103 and the straight groove 104 is the same, specifically, the arc protrusion 101 or the arc groove 103 is adjacent to the straight protrusion 102 and the straight groove 104; in two adjacent prefabricated blocks 1 arranged axially along the furnace lining, the arc protrusion 101 of one can be embedded in the arc groove 103 of the other; in two adjacent prefabricated blocks 1 arranged circumferentially along the furnace lining, the straight protrusion 102 of one can be embedded in the straight groove 104 of the other; according to the above-mentioned combination relationship, the four planes of the prefabricated block type 11 are fixedly connected with four prefabricated blocks type 2 12, and vice versa. The arc convex block 101, the straight convex block 102, the arc groove 103 and the straight groove 104 provided on the prefabricated block 1 can make the connection between the prefabricated blocks more firm, and the whole assembled furnace lining has no gap directly through the furnace wall, and has a good thermal insulation effect.

[0027] like Figures 1 to 6 As shown, the prefabricated block 1 is provided with two installation arc grooves 105 penetrating the prefabricated block 1 along the circumferential direction of the furnace lining, and two installation straight grooves 106 penetrating the prefabricated block 1 along the axial direction of the furnace lining, the installation arc grooves 105 penetrating the straight protrusion 102, and the installation straight grooves 106 penetrating the arc protrusion 101. The installation arc grooves 105 and the installation straight grooves 106 are actually the spaces where the installation frame 2 is located when the reinforcement frame 2 is pre-buried in the prefabricated block 1, that is, the reinforcement frame 2 is installed in the installation arc grooves 105 and the installation straight grooves 106.

[0028] like Figure 2 As shown, the reinforcing frame 2 is welded into a "well" shape by four hollow tubes, including an arc-shaped long tube 21, an arc-shaped short tube 22, a straight long tube 23 and a straight short tube 24; the reinforcing frame 2 in the figure is composed of a pipe with an outer square and an inner circular hole. The outer square can make the connection between the reinforcing frame 2 and the prefabricated block 1 tighter, and the inner circular hole is convenient for inserting the screw 3; a rectangular block 201 is provided at one end of the arc-shaped long tube 21 and the straight long tube 23, and the rectangular block 201 provides a fixed space for the screw head 301 of the screw 3.

[0029] like Figure 2As shown, in the same prefabricated block 1, the arc-shaped long tube 21 and the arc-shaped short tube 22 are both on the same circumferential line coaxial with the furnace lining, that is, the radii of the two are equal; the straight long tube 23 and the straight short tube 24 are perpendicular to the central axis of the furnace lining and are at equal distances from the central axis of the furnace lining; in two adjacent prefabricated blocks 1 arranged circumferentially, the inner cavities of the arc-shaped long tube 21 of one and the arc-shaped short tube 22 of the other are connected; in two adjacent prefabricated blocks 1 arranged radially, the inner cavities of the straight long tube 23 of one and the straight short tube 24 of the other are connected. The screw rod 3 includes an arc screw rod 31 and a straight screw rod 32. The arc screw rod 31 is used to be inserted into the arc long tube 21 and the arc short tube 22 in two adjacent prefabricated blocks 1 and cooperate with a nut to fix the two. The straight screw rod 32 is used to be inserted into the straight long tube 23 and the straight short tube 24 in two adjacent prefabricated blocks 1 and cooperate with a nut to fix the two. The screw head 301 of the screw rod 3 is embedded in the rectangular block 201, and the other end of the screw rod 3 relative to the screw head 301 is provided with a thread 302 for mounting the nut. The length of an arc screw rod 31 minus the thread 302 is equal to the sum of the lengths of an arc long tube 21 and an arc short tube 22, and the length of a straight screw rod 32 minus the thread 302 is equal to the sum of the lengths of a straight long tube 23 and a straight short tube 24. The length of the thread 302 is shorter than the thickness of the arc convex block 101 or the straight convex block 102. The specific installation method of the arc screw 31 is: the arc screw 31 is inserted from one end of the arc long tube 21 of one prefabricated block 1 with the rectangular block 201, and then inserted into the arc short tube 22 of another adjacent prefabricated block 1, until the screw head 301 is embedded in the rectangular block 201, and the nut is screwed on the thread 302 end. The specific installation method of the straight screw 31 is similar to the installation method of the arc screw 31, which will not be repeated here.

[0030] In addition, if Figures 3 to 6 As shown, the straight long tube 23 and the straight short tube 24 are closer to the outer surface of the furnace lining as a whole in the prefabricated block 1 than the arc-shaped long tube 21 and the arc-shaped short tube 22, and are prepared for convenient installation of nuts in the nut avoidance groove 107 when assembling the prefabricated block 1. The arc convex block 101 and the straight convex block 102 are provided with a nut avoidance groove 107, and the arc groove 103 and the straight groove 104 are provided with a rectangular block avoidance groove 108. The nut avoidance groove 107 does not penetrate the arc convex block 101 and the straight convex block 102 in the radial direction, which can prevent heat loss in the furnace; the nut avoidance groove 107 can be conveniently installed to install the nut for the screw 3 during assembly, and the rectangular block avoidance groove 108 can be embedded in the rectangular block 201, and the screw head 301 of the screw 3 is embedded in the rectangular block 201, which can effectively fix the screw 3. Specifically, when the prefabricated block 1 is installed circumferentially, the opening of the nut avoidance groove 107 faces the central axis of the furnace lining, so the nut can be conveniently tightened; while when the prefabricated block 1 is installed axially, the opening of the nut avoidance groove 107 faces away from the central axis of the furnace lining.

[0031] like Figure 2As shown, the prefabricated block 1 in which the arc-shaped long tube 21 is farther from the arc bulge 101 than the arc-shaped short tube 22 is a prefabricated block type 11, and the prefabricated block 1 in which the arc-shaped long tube 21 is closer to the arc bulge 101 than the arc-shaped short tube 22 is a prefabricated block type 2 12.

[0032] like Figures 3 to 6 As shown, the arc groove 103 and the straight groove 104 are connected and both pass through the prefabricated block 1, and the arc convex block 101 and the straight convex block 102 are connected; Figure 6 , Figure 7 As shown, the prefabricated block 1 is provided with an assembly groove 109 connecting its inner curved surface with the straight groove 104, and the assembly groove 109 is opposite to the installation arc groove 105 on the straight groove 104. The assembly groove 109 can be arranged on the prefabricated block type 11 or the prefabricated block type 2 12, and is used to reserve space for installing nuts on the screw 3 and welding the last screw 3 when assembling the circumferential prefabricated blocks 1 to the last block. After the circumferential prefabricated blocks 1 are assembled, the assembly groove 109 is sealed.

[0033] Figure 7 The circumferential assembly diagram of the utility model, in which the assembly groove 109 includes a welding groove 109a and a nut groove 109b; Figure 7 As an example, assume that Figure 7 The second prefabricated block 12 on the right side is the last prefabricated block 1 installed in the circumferential direction. The arc screw 31 extending from the prefabricated block 1 on the right side is cut off first to facilitate the insertion of the second prefabricated block 12. At the same time, before the second prefabricated block 12 is inserted, the installation arc groove 105 therein is pre-installed with two cut-off arc screws 31. After the second prefabricated block 12 is installed, the arc screw 31 is welded from the welding groove 109a of the second prefabricated block 12 on the right side, and then the arc screw 31 is inserted from the prefabricated block 12 in the figure. A nut is installed in the nut groove 109b of the prefabricated block type 11; then the arc screw 31 is welded from the welding groove 109a in the prefabricated block type 11 in the figure, and then the nut is installed in the nut groove 109b of the prefabricated block type 2 12 on the left side of the figure. At this time, the complete circumferential assembly of the prefabricated block 1 is completed, and the assembly groove 109 is sealed after the assembly is completed; accordingly, in order to facilitate welding, the arc long tube 21 does not completely cover the arc screw 31 at the welding groove 109a.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A castable high temperature resistant heating furnace lining, characterized in that: The invention comprises a prefabricated block (1), a reinforcing frame (2) and a screw rod (3); the reinforcing frame (2) is embedded in the prefabricated block (1) when the prefabricated block (1) is manufactured; the prefabricated block (1) is divided into a first type prefabricated block (11) and a second type prefabricated block (12) according to the difference of the reinforcing frame (2) therein; the first type prefabricated block (11) and the second type prefabricated block (12) are arranged alternately to form a cylindrical furnace lining; the screw rod (3) is used to fix adjacent first type prefabricated blocks (11) and second type prefabricated blocks (12).

2. The castable high temperature resistant heating furnace lining according to claim 1, characterized in that: The prefabricated block (1) is provided with an arc convex block (101), a straight convex block (102), an arc groove (103) and a straight groove (104); of two prefabricated blocks (1) adjacent to each other and arranged axially along the furnace lining, the arc convex block (101) of one of them can be embedded in the arc groove (103) of the other; of two prefabricated blocks (1) adjacent to each other and arranged circumferentially along the furnace lining, the straight convex block (102) of one of them can be embedded in the straight groove (104) of the other.

3. The castable high temperature resistant heating furnace lining according to claim 2, characterized in that: The prefabricated block (1) is provided with two installation arc grooves (105) penetrating the prefabricated block (1) along the circumferential direction of the furnace lining, and two installation straight grooves (106) penetrating the prefabricated block (1) along the axial direction of the furnace lining, the installation arc grooves (105) penetrating the straight protrusions (102), and the installation straight grooves (106) penetrating the arc protrusions (101).

4. The castable high temperature resistant heating furnace lining according to claim 3, characterized in that: The reinforcing frame (2) is arranged in the installation arc groove (105) and the installation straight groove (106). The reinforcing frame (2) is formed by welding four hollow tubes into a "well" shape, including an arc-shaped long tube (21), an arc-shaped short tube (22), a straight long tube (23) and a straight short tube (24). A rectangular block (201) is provided at one end of the arc-shaped long tube (21) and the straight long tube (23).

5. The castable high temperature resistant heating furnace lining according to claim 4, characterized in that: In the same prefabricated block (1), the arc-shaped long tube (21) and the arc-shaped short tube (22) are both located on the same circumference line coaxial with the furnace lining, that is, the radii of the two are equal; the straight long tube (23) and the straight short tube (24) are perpendicular to the central axis of the furnace lining and are at the same distance from the central axis of the furnace lining.

6. The castable high temperature resistant heating furnace lining according to claim 5, characterized in that: The prefabricated block (1) in which the arc-shaped long tube (21) is farther from the arc bulge (101) than the arc-shaped short tube (22) is the prefabricated block type 1 (11), and the prefabricated block (1) in which the arc-shaped long tube (21) is closer to the arc bulge (101) than the arc-shaped short tube (22) is the prefabricated block type 2 (12).

7. The castable high temperature resistant heating furnace lining according to claim 6, characterized in that: In two circumferentially adjacent prefabricated blocks (1), the inner cavities of the arc-shaped long tube (21) of one and the arc-shaped short tube (22) of the other are connected; in two radially adjacent prefabricated blocks (1), the inner cavities of the straight long tube (23) of one and the straight short tube (24) of the other are connected.

8. The castable high temperature resistant heating furnace lining according to claim 7, characterized in that: The screw rod (3) comprises an arc-shaped screw rod (31) and a straight screw rod (32); the arc-shaped screw rod (31) is used to be inserted into the arc-shaped long tube (21) and the arc-shaped short tube (22) in the adjacent prefabricated block (1) and cooperate with a nut to fix the two together; the straight screw rod (32) is used to be inserted into the straight long tube (23) and the straight short tube (24) in the adjacent prefabricated block (1) and cooperate with a nut to fix the two together; the screw rod head of the screw rod (3) is embedded in the rectangular block (201).

9. The castable high temperature resistant heating furnace lining according to claim 8, characterized in that: The arc convex block (101) and the straight convex block (102) are provided with nut avoidance grooves (107), and the arc groove (103) and the straight groove (104) are provided with rectangular block avoidance grooves (108).

10. The castable high temperature resistant heating furnace lining according to claim 3, characterized in that: The arc groove (103) and the straight groove (104) are connected and both pass through the prefabricated block (1), and the arc bulge (101) and the straight bulge (102) are connected.

Images