Round manhole plugging masonry structure

Abstract

The utility model provides a circular manhole plugging masonry structure. The masonry structure comprises an annular masonry area close to the inner wall of the manhole, a square blocking area located in the center area of the manhole and a transition area located between the annular masonry area and the square blocking area, and high-temperature-resistant fiber paper layers are arranged between the annular masonry area and the inner wall of the manhole, between the transition area and the annular masonry area and between the square blocking area and the transition area. The annular masonry area is formed by A-shaped bricks with isosceles trapezoid sections in a masonry mode, and the transition area is of a structure which is formed by eight B-shaped bricks with the same shape and size in a masonry mode and is round outside and square inside. The middle blocking area is arranged to be a blocking square section, mounting and dismounting are convenient, the high-temperature-resistant ceramic fiber paper enables the sealing performance of the masonry structure to be enhanced, meanwhile, the hole sealing bricks can be prevented from being extruded and cracked due to high-temperature expansion in the using process, refractory mortar is not arranged between the bricks, dismounting is quite easy and convenient, the bricks are completely not damaged, and the service life of the bricks is prolonged. And repeated use can be realized.

Description

Technical Field

[0001] The utility model belongs to the field of manhole blocking, in particular to a circular manhole blocking masonry structure of a TO furnace. Background Art

[0002] The TO furnace is a waste liquid incinerator primarily used to treat organic waste liquids generated during the production process of chemical companies. The TO furnace utilizes a tangential atomization device and an internal mixing dual-fluid atomizer. This achieves exceptionally high mixing efficiency, atomization effectiveness, combustion speed, and efficiency, saving significant amounts of fuel. Its combustion safety is high, and it is widely used.

[0003] In the TO furnace overhaul and renovation project, it is necessary to seal the circular manhole with masonry. In the existing TO furnace, the manhole sealing masonry uses refractory mud except for the circumference, and the rest is dry-laid. In order to enhance the sealing performance of the manhole bricks, the gap between the new manhole bricks and the original refractory bricks (less than or equal to 2mm) is filled with chrome corundum high-temperature mortar; the interlayer joints and vertical joints of the new manhole bricks are designed to be 0mm. In order to facilitate the installation and removal of the manhole bricks, the vertical joints of some bricks in the center area of ​​the manhole are 2mm. The specific masonry structure is as follows Figure 1 As shown, the first layer of bricks is laid sideways, with a middle brick not processed, and bricks on both sides are processed according to the extension of the arc. The processed bricks are symmetrical on the left and right. The processed bricks on the left are numbered A and the processed bricks on the right are numbered B. The first layer needs to process 6 bricks, A1, A2, A3 on the left and B1, B2, B3 on the right; the second to tenth layers are laid flat, and the processed bricks on both sides are symmetrical. Each layer first lays the processed bricks on both sides and ends in the middle, that is, the second layer first lays A4 and B4 bricks, then lays whole bricks (unnumbered), and finally lays processed brick Z1. The third layer first lays A5 and B5, then lays whole bricks (unnumbered), and finally lays processed brick Z2, and so on, for the fourth to tenth layers in sequence; the eleventh layer of bricks is laid sideways, first laying the processed bricks A13, A14, A15 and B13, B14, B15 on both sides in sequence, and finally lays the processed brick Z7 to end.

[0004] The existing circular manhole working layer masonry plan requires a total of 86 general bricks of 230×114×76, of which 37 need to be processed. This masonry process has the disadvantages of processing a large number of bricks. 37 bricks need to be processed, and the removed parts cannot be reused, which is a great waste. In addition, due to the large number of bricks to be processed, manual operation is unstable and there are processing errors, which will lead to a decrease in processing accuracy. Due to the tolerance of bricks, there are gaps between bricks and between layers, which will cause the sealed masonry to be loose. In addition, the existing masonry structure has the disadvantages of being difficult to remove the first brick, and some bricks cannot be reused after removal due to damage (mainly because some processed bricks are small and sharp, such as A3, B3, A13, and B13). Therefore, it is necessary to design a new masonry structure to overcome the problems existing in the existing technology. Summary of the Invention

[0005] In response to the problems existing in the prior art, the utility model provides a circular manhole sealing masonry structure. The masonry structure is formed by designing several brick types to form a combined brick form, which facilitates the reliable and dense sealing of the manhole and is easy to dismantle and reuse.

[0006] In order to achieve the above technical objectives, the technical solution provided by the present invention is as follows: a circular manhole blocking masonry structure, comprising an annular masonry area close to the inner wall of the manhole, a square blocking area located in the center of the manhole, and a transition area between the annular masonry area and the square blocking area, wherein a high-temperature resistant fiber paper layer is provided between the annular masonry area and the inner wall of the manhole, between the transition area and the annular masonry area, and between the square blocking area and the transition area;

[0007] The annular masonry area is built with A-type bricks with an isosceles trapezoidal cross-section, and all A-type bricks used to build the annular masonry area have the same size; the transition area is an outer circle and inner square structure built with eight B-type bricks of the same shape and size, the outer diameter of the outer circle matches the inner ring diameter of the annular masonry area, and the inner square surface matches the size of the square blocking area. The outer edge of the cross-section of the B-type brick is an arc, and the inner edge is a straight line. Two B-type bricks are built on each side of the square blocking area; the square blocking area is built with multiple C1 bricks, multiple C2 bricks and one C3 brick. The C1 brick and C2 brick are square bricks with the same thickness and length but different widths. The C3 brick is a square brick with the same thickness and length as the C1 brick, and one end face in the length direction is provided with a cutting area.

[0008] The better technical solution of the present invention is as follows: the square blocking area is a square masonry area composed of multiple rows of transverse masonry structures, each row of transverse masonry structures is provided with a C2 brick, and the C2 brick is located adjacent to the edge of the square blocking area, and the C2 bricks of two adjacent rows of transverse masonry structures are arranged on different sides; a C3 brick is arranged in the uppermost or lowermost row of transverse masonry structures, and the cutting area of ​​the C3 brick faces the outside of the manhole.

[0009] The better technical solution of the present invention is as follows: the outer edge of the B-type brick is a 90° arc, the inner edge is a straight line, the upper edge is 90° to the inner edge, the lower edge is 45° to the inner edge, and the angle between the upper edge and the lower edge is 45°. The combination of 8 B-type bricks forms a transition zone where the cross-section changes from circular to square.

[0010] The better technical solution of the utility model is as follows: the thickness of the high temperature resistant fiber paper layer is 2-4 mm, and a 1.5-2.5 mm thick chrome corundum high temperature clay layer is applied between the inner wall of the manhole and the high temperature resistant fiber paper layer.

[0011] The better technical solution of the present utility model is as follows: the thickness of the C1 brick, C2 brick and C3 brick is 80mm, the length is 230mm, the width of the C1 brick and C3 brick is 110mm, the width of the C2 brick is 70mm, the breaking area of ​​the C3 brick is provided with two parts, which are symmetrically arranged at the corners of the brick body. The outer width of each area is 30mm and the inner width is 35mm. A demolition part with an isosceles trapezoidal cross-section is formed on the outer end face of the C3 brick.

[0012] The preferred technical solution of the present invention is as follows: the weight of the B-type brick does not exceed 20 kg, and the minimum side dimension of the brick is not less than 40 mm.

[0013] Beneficial effects of the utility model:

[0014] (1) The central blocking area of ​​the utility model is configured to block a square cross section, which is convenient for installation and removal. A C3 brick with a broken outer end is provided in the blocking area. When removing the brick, the C3 brick can be taken out by simply pulling the end of the brick, thereby facilitating the protective removal of the remaining bricks one by one, thereby ensuring the reuse of the entire set of bricks.

[0015] (2) In the present invention, except for the C3 bricks, other bricks do not need to be broken. Each brick can be reused after being dismantled, which reduces waste and reduces the size error between bricks. In addition, the design adopts high-temperature resistant fiber paper between the areas. Since the high-temperature resistant ceramic fiber paper has high-temperature resistance and compressibility, the sealing performance of this combined masonry is enhanced. At the same time, it can avoid the high-temperature expansion during use and the cracking of the sealing bricks. Since there is no refractory mud between the bricks, it is very easy and convenient to dismantle. The bricks are completely intact and can be reused many times. Moreover, the fiber paper can be cut at will, which can further eliminate the size error and masonry error of the bricks.

[0016] (3) The middle blocking area of ​​the utility model is set to be square, and B-type bricks are used for transition from round to square. The outermost ring is set to be round, which can reduce the cross-sectional size of the above "round to square bricks", that is, reduce the weight of the "round to square bricks". BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a plan view of the existing manhole masonry structure;

[0018] Figure 2 It is a front view schematic diagram of the manhole of the utility model;

[0019] Figure 3 It is a schematic diagram of the partition of the masonry structure of the utility model;

[0020] Figure 4 yes Figure 2 Cross-sectional view of the middle AA part;

[0021] Figure 5 This is a schematic diagram of the cross section of the B-type brick in the width direction of the present invention;

[0022] Figure 6 This is a schematic diagram of the cross section in the length direction of the B-type brick in the utility model;

[0023] Figure 7 It is a schematic cross-sectional view of the width direction of the A-type brick in the present invention;

[0024] Figure 8 It is a schematic cross-sectional view of the width direction of the C3 type brick in the present invention;

[0025] Figure 9 It is a schematic cross-sectional view of the length direction of the C3 type brick in the present invention.

[0026] In the figure: 1—annular masonry area, 2—square blocking area, 3—transition area, 4—manhole, 5—high temperature resistant fiber paper layer, 6—B-type brick, 7—C1-type brick, 8—C2-type brick, 9—C3-type brick, 900—cutting area, 901—demolition part, 10—A-type brick. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figures 1 to 5 The accompanying drawings are simplified examples and are intended solely to clearly and concisely illustrate the embodiments of the present invention. The technical solutions presented in the accompanying drawings are specific examples of the present invention and are not intended to limit the scope of the claimed invention. All other examples derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper," "lower," "inner," "outer," "left," "right," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the present invention is typically placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] The embodiment provides a circular manhole blocking masonry structure, such as 2 to Figure 4As shown, it includes an annular masonry area 1 close to the inner wall of the manhole 4, a square blocking area 2 located in the center of the manhole 4, and a transition area 3 located between the annular masonry area 1 and the square blocking area. A high-temperature resistant fiber paper layer 5 is provided between the annular masonry area 1 and the inner wall of the manhole 4, between the transition area 3 and the annular masonry area 1, and between the square blocking area 2 and the transition area 3.

[0030] The thickness of the high-temperature resistant fiber paper layer 5 is 3 mm, and a 2 mm thick chrome corundum high-temperature clay layer is applied between the inner wall of the manhole 4 and the high-temperature resistant fiber paper layer 5 .

[0031] like Figure 3 As shown in the embodiment, the annular masonry area 1 is constructed using A-type bricks 10 with an isosceles trapezoidal cross-section. All A-type bricks 10 forming the annular masonry area 1 are of the same size. The transition zone 3 is constructed using eight B-type bricks 6 of the same shape and size, forming a circular outer circle with a square inner surface. The outer diameter of the circular outer circle matches the inner diameter of the annular masonry area 1, and the inner square surface matches the size of the square blocking area 2. The B-type bricks 6 have an arc-shaped outer edge and a straight inner edge. Two B-type bricks 6 are constructed on each side of the square blocking area 2. The outer edges of the B-type bricks 6 are 90° arcs and the inner edges are straight. The upper edge of the B-type bricks 6 forms a 90° arc with the inner edge, and the lower edge forms a 45° angle with the inner edge. The eight B-type bricks 6 form a transition zone with a circular to square cross-section. The weight of the B-type bricks 6 does not exceed 20 kg, and the minimum side dimension of the bricks is not less than 40 mm.

[0032] In the embodiment, Figure 2 As shown, the square blocking area 2 is constructed from multiple C1 bricks 7, multiple C2 bricks 8, and one C3 brick 9. The C1 and C2 bricks 7 and 8 are square bricks of the same thickness and length but different widths. The C3 brick 9 is a square brick of the same thickness and length as the C1 brick 7, and one end face of its length is provided with a cutout 900. The square blocking area 2 is a square masonry area composed of multiple rows of transverse masonry structures. Each row of transverse masonry structures is provided with a C2 brick 8, and the C2 bricks 8 are located adjacent to the edge of the square blocking area 2. The C2 bricks 8 of two adjacent rows of transverse masonry structures are arranged on different sides. A C3 brick 9 is arranged in the topmost or bottommost row of transverse masonry structures, and the cutout 900 of the C3 brick 9 faces the outside of the manhole 4. The thickness of the C1 brick 7, C2 brick 8 and C3 brick 9 is 80 mm, and the length is 230 mm. The width of the C1 brick 7 and C3 brick 9 is 110 mm, and the width of the C2 brick 8 is 70 mm. The breaking area of ​​the C3 brick 9 is provided with two parts, which are symmetrically arranged at the corners of the brick body. The outer width of each area is 30 mm and the inner width is 35 mm. A demolition part 901 with an isosceles trapezoidal cross-section is formed on the outer end face of the C3 brick 9.

[0033] In a major overhaul project for a certain company's TO furnaces, two sets of TO furnaces had a total of 18 circular manholes that needed to be blocked and masonryed. Twelve of these had a diameter of 914 mm and six had a diameter of 614 mm. The square blocking area 2 in the middle of the 914 mm manholes was constructed with five rows of horizontal masonry, each row consisting of a C3 brick. The specific masonry process was as follows:

[0034] (1) Apply a layer of chrome corundum high-temperature cement about 2 mm thick on the lower part of the manhole and stick a layer of 3 mm thick high-temperature resistant ceramic fiber paper;

[0035] (2) Lay the first ring of bricks according to conventional techniques, such as Figure 4 As shown, first lay A (1) brick, divide A (1) brick into two halves with the center line, then lay A (2), A (3) ... etc. on the left and right in turn until the waistline of the circular hole, that is, A (18) and A (19) bricks are laid to form a circular masonry area 1;

[0036] (3) Lay a layer of 3mm thick high temperature resistant ceramic fiber paper on the lower half of the inner arc of the completed annular masonry area 1; start to build the transition area, specifically as follows Figure 4 As shown, first lay B (1) and B (2) bricks. Pay attention to adjusting B (1) and B (2) bricks so that they are symmetrical with the center line. Use a level to measure the levelness of the brick surface. Then lay B (3) and B (5) bricks in sequence. After adjustment, lay B (4) and B (6) bricks in sequence. At the same time, lay a layer of 3mm thick high-temperature resistant ceramic fiber paper on the upper semicircle of the inner arc of brick A; and lay a layer of 3mm thick high-temperature resistant ceramic fiber paper on the upper / outer surface of the completed B brick.

[0037] (3) Lay bricks C1, C2, and C3; use bricks B (4) and B (6) as the arch and lay bricks A (20-26) and A (21-27) in sequence.

[0038] (4) Lay B (7) and B (8) bricks, and use B (7) and B (8) bricks as arches to lay A (28-34) and A (29-35) bricks in sequence, and finally lay A (36) bricks to close the door, thus completing the sealing of the circular cross-section of the manhole.

[0039] The masonry method of the 600mm diameter manhole is the same as the 914mm diameter circular manhole sealing masonry method, except that the middle square sealing area 2 is built with three rows of horizontal masonry structures.

[0040] In the above masonry process, all bricks are dry-laid, except for a layer of chrome corundum high-temperature mortar approximately 2mm thick applied to the original manhole brick surface. In addition, a 3mm thick layer of high-temperature resistant ceramic fiber paper is designed between each brick ring. Due to its high temperature resistance and compressibility, this modular masonry structure is sealed and prevents high-temperature expansion during use that could cause cracking of the sealing bricks. Because there is no refractory mortar between the bricks, removal is very easy and convenient, and the bricks are completely intact and can be reused many times.

[0041] The above is merely one embodiment of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A circular manhole blocking masonry structure, characterized by: It comprises an annular masonry area (1) close to the inner wall of the manhole (4), a square blocking area (2) located in the center of the manhole (4), and a transition area (3) located between the annular masonry area (1) and the square blocking area, and a high-temperature resistant fiber paper layer (5) is provided between the annular masonry area (1) and the inner wall of the manhole (4), between the transition area (3) and the annular masonry area (1), and between the square blocking area (2) and the transition area (3); The annular masonry area (1) is built with A-type bricks (10) with isosceles trapezoidal cross sections, and all A-type bricks (10) in the annular masonry area (1) are of the same size; the transition area (3) is a structure with an outer circle and an inner square, built with eight B-type bricks (6) of the same shape and size. The outer diameter of the outer circle matches the inner diameter of the annular masonry area (1), and the inner square surface matches the size of the square blocking area (2). The outer edge of the cross section of the B-type brick (6) is an arc, and the inner square surface is a square. The sides of the square blocking area (2) are straight lines, and each side of the square blocking area (2) is built with two B-type bricks (6); the square blocking area (2) is built with multiple C1-type bricks (7), multiple C2-type bricks (8) and one C3-type brick (9), wherein the C1-type bricks (7) and the C2-type bricks (8) are square bricks with the same thickness and length but different widths, and the C3-type brick (9) is a square brick with the same thickness and length as the C1-type brick (7), and a cutting area (900) is provided on one end face in the longitudinal direction.

2. A circular manhole sealing masonry structure according to claim 1, characterized in that: The square blocking area (2) is a square masonry area composed of multiple rows of transverse masonry structures, each row of transverse masonry structures is provided with a C2-type brick (8), and the C2-type brick (8) is located adjacent to the edge of the square blocking area (2), and the C2-type bricks (8) of two adjacent rows of transverse masonry structures are arranged on different sides; a C3-type brick (9) is arranged in the uppermost or lowermost row of transverse masonry structures, and the cutting area (900) of the C3-type brick (9) faces the outside of the manhole (4).

3. A circular manhole sealing masonry structure according to claim 1 or 2, characterized in that: The outer edge of the B-shaped brick (6) is a 90° arc, the inner edge is a straight line, the upper edge is 90° to the inner edge, the lower edge is 45° to the inner edge, and the angle between the upper edge and the lower edge is 45°. The eight B-shaped bricks (6) are combined to form a transition zone where the cross section changes from circular to square.

4. A circular manhole sealing masonry structure according to claim 1 or 2, characterized in that: The thickness of the high-temperature resistant fiber paper layer (5) is 2 to 4 mm, and a 1.5 to 2.5 mm thick chrome corundum high-temperature clay layer is applied between the inner wall of the manhole (4) and the high-temperature resistant fiber paper layer (5).

5. A circular manhole sealing masonry structure according to claim 1 or 2, characterized in that: The thickness of the C1 brick (7), C2 brick (8) and C3 brick (9) is 80 mm and the length is 230 mm. The width of the C1 brick (7) and C3 brick (9) is 110 mm, and the width of the C2 brick (8) is 70 mm. The breaking area of ​​the C3 brick (9) is provided with two parts, which are symmetrically arranged at the corners of the brick body. The outer width of each area is 30 mm and the inner width is 35 mm. A demolition part (901) with an isosceles trapezoidal cross section is formed on the outer end surface of the C3 brick (9).

6. A circular manhole sealing masonry structure according to claim 1 or 2, characterized in that: The weight of the B-type brick (6) does not exceed 20 kg, and the minimum side dimension of the brick is not less than 40 mm.

Images