Leak-proof structure for coal leveling hole of side oven door of top-loading coke oven

Abstract

A top-loading coke oven machine side oven door coal leveling hole leakproof structure comprises a small oven door body, a web plate, a sliding plate and a top brick groove, the small oven door body comprises a small oven door body plate and an upper ring block, the bottom end face of the small oven door body plate coincides with the bottom end face of the upper ring block, and an embedded protrusion is arranged on the end face, facing a brick groove body plate, of the small oven door body plate. The top brick groove comprises a brick groove body plate and a lower ring block, the top surface of the lower ring block is higher than the top surface of the brick groove body plate, an embedding groove is formed in the brick groove body plate of the top brick groove, and the embedding protrusion is matched with the embedding groove; and the web plate and the sliding plate are fixed between the upper ring block and the lower ring block outside the small furnace door body plate and the brick groove body plate in parallel, and are fixed through the connecting bolts to fasten the small furnace door body and the top brick groove. And the sliding plate and the web plate are positioned outside the gap, so that the internal sealing of the sliding plate and the web plate cannot be influenced by the thermal expansion of the sliding plate and the web plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vertical top -charging coke oven, especially a top -charging coke oven machine side furnace door flat coal hole anti -leakage structure. BACKGROUND

[0002] Vertical top -charging coke oven adds coking coal into carbonization chamber through the coal charging car walking on the top of coke oven from the coal charging hole of carbonization chamber top, then pushes the top coke coal by flat coal pole after opening small furnace door cover, locks small furnace door cover and enters the coking process.

[0003] Refer to the attached Figure 3 The existing design flat coal hole is composed of top brick groove, web, slide plate, small furnace door and small furnace door cover, the temperature of carbonization chamber top in flat coal hole is about 900 DEG C, and small furnace door cover is in the normal closed state during the coking process. At present, the vertical top -charging coke oven at home and abroad is different in carbonization chamber height and width and coke output, and the flat coal hole is almost completely consistent in structure, and there is more or less smoke and fire phenomenon in the bottom of small furnace door body during operation, especially after using for a period of time. The specific reasons are as follows: 1. there is a big difference in the thermal expansion coefficient of the materials of the components of flat coal hole, stainless steel > carbon alloy steel > vermicular cast iron. The stainless steel web deforms greatly at high temperature, is prone to wrinkle, and is torn from the bolt hole due to the obstruction of fastening bolt. 2. the fastening bolt between small furnace door body and top brick groove is made of stainless steel to adapt to high temperature environment and prevent ablation, and the bolt becomes longer at high temperature, resulting in the gap between components. 3. the top brick groove cannot be protected by refractory material because flat coal pole passes through, and is arranged in the high temperature area above 900 DEG C, and is easily ablated. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem, overcomes the defects that the existing flat coal hole is composed of four components with big difference in thermal expansion rate, there are multiple layer joint gaps, and the bottom of small furnace door smokes and runs fire, and provides a top -charging coke oven machine side furnace door flat coal hole anti -leakage structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is a leakage prevention structure for the coal leveling hole of the side furnace door of a top-loading coke oven, including a small furnace door body, a sliding plate, a web plate, and a top brick groove. The small furnace door body includes a small furnace door body plate and an upper ring block. The top brick groove includes a brick groove body plate and a lower ring block. The upper ring block is disposed on the outer circumferential surface of the small furnace door body plate, and the bottom end faces of the small furnace door body plate and the upper ring block overlap each other. The end face of the small furnace door body plate facing the brick groove body plate is provided with an interlocking protrusion. The top surface of the lower ring block is higher than the top surface of the brick groove body plate and forms an interlocking groove on the brick groove body plate of the top brick groove. The interlocking protrusion and the interlocking groove match each other. The web plate and the sliding plate are fixed parallel to each other between the upper ring block and the lower ring block, and the upper ring block, the lower ring block, the web plate, and the sliding plate are fixed by connecting bolts to fasten the small furnace door body and the top brick groove.

[0006] Furthermore, the furnace door body plate, the upper ring block, and the fitting protrusion are integrally formed, and the brick groove body plate and the lower ring block are integrally formed.

[0007] Furthermore, the length of the fitting protrusion is equal to the sum of the thickness of the web, the thickness of the slide plate, and the depth of the fitting groove.

[0008] Furthermore, the thickness of the lower ring block is greater than the thickness of the upper ring block.

[0009] Furthermore, heat-resistant asbestos packing is provided on the inner side of the mating surface between the small furnace door body and the top brick groove.

[0010] Furthermore, the small furnace door body and the top brick groove are made of the same type of casting or different materials with similar coefficients of thermal expansion.

[0011] Furthermore, the fitting protrusion replaces the brick groove body plate, and the fitting groove replaces the small furnace door body plate.

[0012] This utility model has the following beneficial technical effects:

[0013] By reducing the three connection gaps of the four components to a single connection gap, which is then blocked by the lower ring block, the possibility of smoke and fire escape is reduced. Furthermore, since the sliding plate and web plate are outside the gap, their thermal expansion will not affect their internal seal. Simultaneously, the small furnace door body and the top brick groove are made of the same casting, ensuring the same coefficient of thermal expansion. This effectively avoids gas leakage caused by differential expansion and contraction due to differences in the thermal expansion coefficients of different materials. The gap at the joint surface will not widen. High-temperature resistant asbestos packing is installed on the inner side of the joint surface between the small furnace door body and the top brick groove, ensuring a good seal at the bottom of the small furnace door body even at high temperatures. Attached Figure Description

[0014] Figure 1 is the overall structure schematic diagram of the embodiment 1 of the side furnace door flat coal hole anti-leakage structure of the top charging coke oven machine of the utility model;

[0015] Figure 2 is the overall structure schematic diagram of the embodiment 2 of the side furnace door flat coal hole anti-leakage structure of the top charging coke oven machine of the utility model;

[0016] Figure 3 is the prior art structure schematic diagram in the background art.

[0017] Mark explanation:

[0018] 1, small furnace door body; 11, small furnace door body plate; 12, upper ring block; 13, embedded convex; 2, sliding plate; 3, web; 4, top brick groove; 41, brick groove body plate; 42, lower ring block; 43, embedded recess; 5, high-temperature asbestos packing; 6, connecting bolt. Specific implementation

[0019] The utility model will be further explained in detail in combination with the drawings and examples.

[0020] Reference Figure 1 , this embodiment includes small furnace door body 1, sliding plate 2, web 3 and top brick groove 4, small furnace door body 1 is arranged in the top of top brick groove 4, and sliding plate 2 and web 3 are fixed between small furnace door body 1 and top brick groove 4.

[0021] Small furnace door body 1 includes furnace door body plate 11, upper ring block 12 and embedded convex 13, and the three are integrally formed, wherein the bottom surface of upper ring block 12 and the bottom surface of furnace door body plate 11 are located on the same plane, and upper ring block 12 is arranged on the outer peripheral surface of furnace door body plate 11, and embedded convex 13 is located on the bottom of furnace door body plate 11;Top brick groove 4 includes brick groove body plate 41 and lower ring block 42, lower ring block 42 is arranged on the outer peripheral surface of brick groove body plate 41, and the top surface of lower ring block 42 is higher than the top surface of the brick groove body plate 41, to form embedded recess 43 on the brick groove body plate 41 of top brick groove 4, and the length of embedded convex 13 is greater than the depth of embedded recess 43.

[0022] When small furnace door body 1 and top brick groove 4 are embedded and installed with each other, because the length of embedded convex 13 is greater than the depth of embedded recess 43, the length of the part of lower ring block 42 higher than brick groove body plate 41 is also less than the length of embedded convex 13, and there will be space between upper ring block 12 and lower ring block 42, and sliding plate 2 and web 3 are arranged and installed in parallel between upper ring block 12 and lower ring block 42, and expansion gap is reserved when sliding plate 2 and web 3 are installed.

[0023] The length of the embedded protrusion 13 is equal to the sum of the thickness of the web 2, the thickness of the slide plate 3 and the depth of the embedded recess 43, and the small stove door body 1 and the top brick groove 4 are installed by simultaneously tightening the upper ring block 12, the lower ring block 42, the web 2 and the slide plate 3 through the connecting bolt 6. The connecting round holes on the slide plate 3 and the web 2 are appropriately increased in consideration of the thermal expansion factor of the material.

[0024] In addition, the thickness of the lower ring block 42 is greater than the thickness of the upper ring block 12, facilitating the slotting of the embedded recess 43 and the lengthening of the bolt hole. The small stove door body 1 and the top brick groove 4 are made of homogeneous castings, so that the thermal expansion coefficients are the same, which can effectively avoid the smoke leakage caused by the difference in expansion and contraction of the gap due to the difference in thermal expansion coefficients of different materials, and the gap of the joint surface will not be enlarged. The high-temperature-resistant asbestos packing 5 is arranged at the inner right angle of the embedded protrusion 13 and the embedded recess 43, and the sealing of the bottom of the small stove door body 1 is also good at high temperature.

[0025] Compared with the existing structure, by changing the three connecting gaps of the four components into one connecting gap, and the connecting gap is blocked by the lower ring block 42, the possibility of smoking and running fire is reduced, and the web 3 and the slide plate 2 are outside the gap, and the thermal expansion of the two will not affect the sealing inside.

[0026] Reference Figure 2 In another embodiment, the embedded protrusion 13 is located on the top brick groove 4, and the embedded recess 43 is arranged on the small stove door body 1, and the positions of the slide plate 2 and the web 3 remain unchanged.

[0027] The above are preferred embodiments of the present application, but not limited to the protection scope of the present application. Among them, the same parts are indicated by the same reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component. Therefore: all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A top-charging coke oven machine side oven door flat coal hole anti-leakage structure, comprising a small oven door body (1), a sliding plate (2), a web plate (3) and a top brick groove (4), characterized in that, The small furnace door body (1) comprises a small furnace door body plate (11) and an upper ring block (12), the top brick groove (4) comprises a brick groove body plate (41) and a lower ring block (42), the upper ring block (12) is arranged on the outer circumferential surface of the small furnace door body plate (11), and the bottom end surfaces of the small furnace door body plate (11) and the upper ring block (12) coincide with each other, the end surface of the small furnace door body plate (11) towards the brick groove body plate (41) is provided with an embedded protrusion (13), the top surface of the lower ring block (42) is higher than the top surface of the brick groove body plate (41), and an embedded recess (43) is formed on the brick groove body plate (41) of the top brick groove (4), and the embedded protrusion (13) and the embedded recess (43) coincide with each other; the sliding plate (2) and the web plate (3) are fixed between the upper ring block (12) of the top brick groove (4) and the lower ring block (42) of the top brick groove (4) and are parallel to each other, and the upper ring block (12), the lower ring block (42), the sliding plate (2) and the web plate (3) are fixed by the connecting bolt (6) to fasten the small furnace door body (1) and the top brick groove (4).

2. A leakage-proof structure for the coal feeding hole of the side door of a top-charged coke oven, according to claim 1, characterized in that, The small furnace door body plate (11), the upper ring block (12) and the embedded protrusion (13) are integrally formed, and the brick groove body plate (41) and the lower ring block (42) are integrally formed.

3. The leakage-proof structure of the coke charging hole of the side door of the top-charged coke oven according to claim 1, characterized in that, The length of the embedded protrusion (13) is equal to the sum of the thicknesses of the sliding plate (2) and the web plate (3) and the depth of the embedded recess (43).

4. The leakage-proof structure of the coke charging hole of the side door of the top-charged coke oven according to claim 1, characterized in that, The thickness of the lower ring block (42) is greater than the thickness of the upper ring block (12).

5. The leakage-proof structure of the coke charging hole of the side door of the top-charged coke oven according to claim 1, characterized in that, The inner side of the joint surface of the small furnace door body (1) and the top brick groove (4) is provided with a heat-resistant asbestos packing.

6. A leakage-proof structure for the coal feeding hole of the side door of a top-charged coke oven machine according to claim 1, characterized in that, The small furnace door body (1) and the top brick groove (4) adopt the same homogeneous castings or castings of different materials with close coefficients of thermal expansion.

7. The leakage-proof structure of the coke charging hole of the side door of the top-charged coke oven according to claim 1, characterized in that, The embedded protrusion (13) is replaced on the brick groove body plate (41), and the embedded recess (43) is replaced on the small furnace door body plate (11).

Images