Coke oven bridge pipe sealing device

Abstract

The utility model relates to the technical field of coke oven bridge pipe sealing, in particular to a coke oven bridge pipe sealing device which comprises a left half hoop and a right half hoop which are oppositely arranged and connected through bolts, and the longitudinal sections of the left half hoop and the right half hoop are arranged in a concave shape. Extrusion plates are mounted in the left half hoop and the right half hoop through radial moving assemblies; asbestos ropes wound by matching with the axle tube are mounted on the inner sides of the extrusion plates; communicating pipes are fixedly arranged on the side walls of the left half hoop and the right half hoop; the space between the left half hoop and the extrusion plate and the space between the right half hoop and the extrusion plate are filled with filler through communicating pipes. Compared with the prior art, the leakage point can be quickly blocked on line without disassembling the bridge pipe, the high cost of replacing the bridge pipe, long-time operation and the influence on the production rhythm are avoided, black smoke is reduced, the environment-friendly red line is prevented from being touched, and meanwhile the production cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of coke oven bridge pipe sealing technology, and in particular to a coke oven bridge pipe sealing device. Background Technology

[0002] A coke oven is an indispensable key piece of equipment in steel production. It mainly consists of a carbonization chamber, combustion chamber, regenerator, inclined flue, furnace roof, foundation, and flue. The carbonization chamber is where coal is transformed into coke; the combustion chamber provides heat to the carbonization chamber; the regenerator preheats the coal gas and air; the inclined flue connects the regenerator and combustion chamber; the furnace roof has coal charging holes; the foundation supports the entire coke oven; and the flue is used to discharge waste gas.

[0003] In the flue, the coke oven bridge pipe is used to vent the raw coal gas from the carbonization chamber. During the venting process, the raw coal gas is cooled by ammonia water nozzles. Its main material is cast iron. Due to long-term exposure to temperature changes, high-pressure ammonia water injection, and ammonia water corrosion, the body gradually thins due to corrosion, eventually becoming porous. This causes the raw coal gas to escape over a large area at the pores, resulting in environmental pollution and deteriorating the operating environment.

[0004] To solve this problem, a new bridge pipe needs to be installed, which is expensive. Since the bridge pipe is installed on the coke oven side, about 15 meters above the ground and spanning about 25 meters, a 100-ton crane is required for replacement. The replacement time is about 3 hours per piece, which increases production costs and is complicated to operate. Furthermore, the replacement is likely to generate black smoke, which violates environmental protection regulations. Utility Model Content

[0005] In response to the current problems of time-consuming and labor-intensive bridge pipe replacement, which affects production rhythm, increases costs, and easily affects the environment, this utility model provides a coke oven bridge pipe sealing device.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0007] A coke oven bridge pipe sealing device includes a left and right half-hoops that are bolted together and arranged opposite to each other. Both the left and right half-hoops have a U-shaped longitudinal section. An extrusion plate is installed inside each half-hoop via a radially moving assembly. An asbestos rope, wound around the bridge pipe, is installed inside the extrusion plate. A connecting pipe is fixedly installed on the sidewall of each half-hoop. Filler material is filled between the left half-hoop and the extrusion plate, and between the right half-hoop and the extrusion plate, through the connecting pipe. The oppositely arranged and bolted left and right half-hoops, with their U-shaped longitudinal section design and the extrusion plates mounted with the radially moving assembly, can press the asbestos rope tightly against the leakage gaps on the outer surface of the bridge pipe, achieving a stable seal. The connecting pipes on the sidewalls and the filler material further fill tiny gaps, improving sealing performance. Furthermore, it can quickly seal leaks online without disassembling the bridge pipe, avoiding the high cost, long operation time, and disruption to production rhythm associated with bridge pipe replacement. It also reduces black smoke generation, prevents violations of environmental regulations, and significantly lowers production costs.

[0008] Preferably, the connecting pipe is positioned in the middle of the sidewalls of the left and right halves of the clamp. This location allows for a more even distribution of the filler material between the left and right halves and the extrusion plate, ensuring balanced stress distribution throughout the sealing process. This effectively avoids weak points in the seal caused by uneven filling, comprehensively improving the sealing effect. The middle connection also facilitates the rapid and efficient flow of the filler material to the minute gaps in the bridge pipe that need sealing when subjected to heat or pressure changes, quickly filling potential leaks and further enhancing sealing performance.

[0009] Preferably, the left half of the hoop has an annular groove 1 in the middle of its inner wall, which mates with the connecting pipe; the right half of the hoop has an annular groove 2 in the middle of its inner wall, which mates with the connecting pipe. This provides dedicated storage and flow space for the filler material, better guiding its even distribution within the left and right halves of the hoop, ensuring that the filler material can fully fill the tiny gaps in the bridge pipe, thereby effectively improving the reliability and tightness of the seal. This arrangement allows the filler material to form a relatively stable filling state within the annular grooves, avoiding leakage or unevenness during flow, further enhancing the sealing effect of the coke oven bridge pipe sealing device on bridge pipe leak points.

[0010] Preferably, both annular groove one and annular groove two have chamfered corners. The chamfers prevent the filler material from getting stuck or accumulating during injection and flow due to sharp corners, ensuring smooth and even distribution within annular groove one and annular groove two, thus improving the sealing effect from all angles. It also reduces wear and damage caused by stress concentration at the corners, extending the device's service life and reducing maintenance costs.

[0011] Preferably, the connecting pipe is L-shaped, which facilitates the operation of the connecting pipe by staff to inject filler material.

[0012] Preferably, the extrusion plate is uniformly provided with several through holes. These through holes allow the filler material to pass through the extrusion plate quickly and evenly under pressure, filling the tiny gaps between the bridge pipe and the asbestos rope, greatly enhancing the tightness of the seal and effectively preventing leakage. During thermal expansion and contraction, these through holes provide a certain buffer space for the filler material, preventing excessive compression or deformation due to thermal stress that could affect the sealing performance and ensuring stable operation of the coke oven bridge pipe sealing device under different working conditions. Simultaneously, the presence of through holes reduces the overall weight of the extrusion plate, facilitating installation and operation by workers, improving work efficiency, and saving material costs to a certain extent, thus optimizing the economy and practicality of the coke oven bridge pipe sealing device.

[0013] Preferably, the radial movement assembly includes several springs; one end of each spring is fixedly connected to a compression plate, and the end of the spring away from the compression plate is fixedly connected to the inner wall of either the left or right half-hoop. The springs are elastic and can adaptively adjust the position and pressure of the compression plate according to the actual shape of the outer surface of the bridge tube, ensuring a tight fit between the asbestos rope and the leaking gap in the bridge tube, thereby enhancing the stability and reliability of the seal. During equipment operation, when the bridge tube undergoes dimensional and positional changes due to thermal expansion and contraction or mechanical vibration, the springs can buffer these changes through their own expansion and contraction, preventing the compression plate from causing hard damage to the bridge tube and extending its service life. Furthermore, this structure is simple, low-cost, and easy to install and maintain, effectively reducing the overall cost of the sealing device and improving the cost-effectiveness of the coke oven bridge tube sealing device.

[0014] Preferably, flange plates for bolted connections are radially provided on both sides of the left and right halves of the hoop; insert plates are fixedly provided on both sides of the left halves of the hoop; slots are provided on both sides of the right halves of the hoop to cooperate with the insert plates. The fixed insert plates on both sides of the left halves of the hoop and the slots on both sides of the right halves of the hoop, together, can play a role in precise positioning during installation, speed up the installation process, improve installation efficiency, and at the same time enhance the tightness of the connection between the left and right halves of the hoop, effectively preventing displacement of the sealing device during use, ensuring the stability of the sealing effect, and providing strong support for the efficient sealing of the coke oven bridge pipe.

[0015] Preferably, a relief groove 1 is provided at both the upper and lower edges of the inner side of the left half-hoop; a relief groove 2 is provided at both the upper and lower edges of the inner side of the right half-hoop. This allows for the accommodation of the asbestos rope, preventing compression, deformation, or damage to the asbestos rope during installation of the left and right half-hoops, ensuring the asbestos rope maintains a good sealing condition and effectively enhancing the sealing effect. Simultaneously, relief grooves 1 and 2 provide a stable placement space for the asbestos rope, preventing displacement during the sealing process, ensuring the reliability and stability of the seal, thereby improving the overall sealing performance of the coke oven bridge pipe sealing device.

[0016] Preferably, the compression plate inside the left half-hoop has extension plates on both sides; the compression plate inside the right half-hoop has grooves that cooperate with the extension plates. The cooperation between the extension plates and the grooves allows for precise positioning of the compression plates inside the left and right half-hoops, ensuring quick alignment during installation and improving installation efficiency. During the sealing process, the extension plates embed into the grooves, enhancing the connection strength between the compression plates and enabling them to more stably press the asbestos rope against the leak in the bridge pipe, improving the stability of the sealing effect. Furthermore, this structure can also prevent the compression plates from shifting or shaking during operation, ensuring long-term stable operation of the sealing device and reducing maintenance frequency.

[0017] As can be seen from the above technical solutions, the advantages of this utility model include: the left and right halves of the hoop, which are arranged opposite to each other and connected by bolts, adopt a concave longitudinal section design, and with the extrusion plate installed by the radial moving component, the asbestos rope can be pressed tightly at the leakage gap on the outer surface of the bridge pipe to achieve a stable seal. The connecting pipe and the filling material set on the side wall can further fill the tiny gaps and improve the sealing performance. Moreover, the leakage point can be quickly sealed online without disassembling the bridge pipe, avoiding the high cost, long operation time and impact on the production rhythm of replacing the bridge pipe, reducing the generation of black smoke, preventing violation of environmental protection red lines, and greatly reducing production costs. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded structural diagram of the left half-hoop and the extrusion plate of this utility model;

[0021] Figure 3 This is an exploded structural diagram of the right half-hoop and the extrusion plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention in use.

[0023] Figure 5 This is a cross-sectional structural diagram of the present invention in use.

[0024] Explanation of reference numerals in the attached diagram: 1-Left half hoop, 2-Right half hoop, 3-Extrusion plate, 4-Bridge pipe, 5-Asbestos rope, 6-Connecting pipe, 7-Filling material, 8-Spring, 9-Flange plate, 10-Extension plate, 11-Groove;

[0025] 101-Annular groove one, 102-Insert plate, 103-Relief groove one; 201-Annular groove two, 202-Slot, 203-Relief groove two. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0027] like Figure 1 , Figure 4 and Figure 5 As shown, a coke oven bridge pipe sealing device includes a left half-hoop 1 and a right half-hoop 2, which are arranged opposite to each other and connected by bolts. The longitudinal sections of both the left half-hoop 1 and the right half-hoop 2 are U-shaped. The left half-hoop 1 includes a first annular end plate, a second annular end plate, and a first semi-cylindrical vertical plate. The two ends of the first semi-cylindrical vertical plate are perpendicularly connected to the first annular end plate and the second annular end plate. The right half-hoop 2 includes a third annular end plate, a fourth annular end plate, and a second semi-cylindrical vertical plate. The two ends of the second semi-cylindrical vertical plate are perpendicularly connected to the third annular end plate and the fourth annular end plate. An extrusion plate 3 is installed inside the left half-hoop 1 and the right half-hoop 2 through a radial moving assembly. An asbestos rope 5 is installed inside the extrusion plate 3 to cooperate with the bridge pipe 4 and wound around it. A connecting pipe 6 is fixedly installed on the side wall of both the left half-hoop 1 and the right half-hoop 2. Filler material 7 is filled between the left half-hoop 1 and the extrusion plate 3, and between the right half-hoop 2 and the extrusion plate 3, through the connecting pipe 6.

[0028] The left and right halves of the hoop 1 and 2, which are set opposite to each other and connected by bolts, adopt a concave longitudinal section design. With the extrusion plate 3 installed by the radial moving component, the asbestos rope 5 can be pressed tightly against the leakage gap on the outer surface of the bridge pipe 4 to achieve a stable seal. The connecting pipe 6 and the filler material 7 set on the side wall can further fill the tiny gaps and improve the sealing performance. Moreover, the leakage point can be quickly sealed online without disassembling the bridge pipe 4, avoiding the high cost, long operation time and impact on the production rhythm of replacing the bridge pipe 4, reducing the generation of black smoke, preventing violation of environmental protection red lines, and greatly reducing production costs.

[0029] In the above configuration, flange plates 9 for bolt connection are radially arranged on both sides of the left half-hoop 1 and the right half-hoop 2; several through holes are evenly arranged on the extrusion plate 3. The radial movement component includes several springs 8; one end of the spring 8 is fixedly connected to the extrusion plate 3, and the end of the spring 8 away from the extrusion plate 3 is fixedly connected to the inner wall of the left half-hoop 1 or the right half-hoop 2. The through holes allow the filler material 7 to quickly and evenly pass through the extrusion plate 3 under pressure, filling the tiny gaps between the bridge pipe 4 and the asbestos rope 5, greatly enhancing the tightness of the seal and effectively eliminating the risk of leakage. During thermal expansion and contraction, these through holes provide a certain buffer space for the filler material 7, avoiding excessive compression or deformation of the filler material 7 due to thermal stress, which would affect the sealing performance and ensure the stable operation of the coke oven bridge pipe sealing device under different working conditions. At the same time, the presence of through holes reduces the overall weight of the extrusion plate 3, making it easier for workers to install and operate, improving work efficiency, and saving material costs to a certain extent, thus optimizing the economy and practicality of the coke oven bridge pipe sealing device. The spring 8 is elastic and can adaptively adjust the position and pressure of the extrusion plate 3 according to the actual shape of the outer surface of the bridge tube 4, ensuring a tight fit between the asbestos rope 5 and the leakage gap of the bridge tube 4, thereby enhancing the stability and reliability of the seal. During equipment operation, when the bridge tube 4 changes in size and position due to thermal expansion and contraction or mechanical vibration, the spring 8 can buffer the movement through its own extension and contraction, preventing the extrusion plate 3 from causing hard damage to the bridge tube 4 and extending the service life of the bridge tube 4. In addition, this structure is simple, low-cost, and easy to install and maintain, which can effectively reduce the overall cost of the sealing device and improve the cost-effectiveness of the coke oven bridge tube sealing device.

[0030] The connecting pipe 6 is located in the middle of the side walls of the left half-hoop 1 and the right half-hoop 2. This position allows the filler material 7 to be more evenly distributed between the left half-hoop 1, the right half-hoop 2, and the extrusion plate 3, ensuring balanced stress on all parts during the sealing process and effectively avoiding weak points in the seal caused by uneven filling, thus comprehensively improving the sealing effect. The middle connection also facilitates the rapid and efficient flow of the filler material 7 to the tiny gaps in the bridge pipe 4 that need to be sealed when heated or subjected to pressure changes, quickly filling potential leak points and further enhancing the sealing performance. The connecting pipe 6 is L-shaped, making it convenient for operators to inject filler material into the connecting pipe 6.

[0031] like Figure 2 , Figure 3 and Figure 4As shown, the left half-hoop 1 has an annular groove 101 in the middle of its inner wall to accommodate the connecting pipe 6, i.e., the annular groove 101 is located on the inner wall of the middle of the first semi-cylindrical vertical plate; the right half-hoop 2 has an annular groove 201 in the middle of its inner wall to accommodate the connecting pipe 6, i.e., the annular groove 201 is located on the inner wall of the middle of the second semi-cylindrical vertical plate. The left half-hoop 1 has a clearance groove 103 at both the upper and lower edges of its inner side; the right half-hoop 2 has a clearance groove 203 at both the upper and lower edges of its inner side. This design provides dedicated storage and flow space for the filler material 7, better guiding its even distribution within the left and right halves of the clamp 1 and clamp 2. This ensures the filler material 7 fully fills the tiny gaps in the bridge pipe 4, effectively improving the reliability and tightness of the seal. This arrangement allows the filler material 7 to form a relatively stable filling state within the annular groove 101 and annular groove 201, preventing leakage or uneven distribution during flow and further enhancing the sealing effect of the coke oven bridge pipe sealing device on leak points in the bridge pipe 4. Both annular groove 101 and annular groove 201 have chamfered corners. These chamfers prevent the filler material 7 from getting stuck or accumulating during injection and flow, ensuring smooth and even distribution within the annular groove 101 and annular groove 201, comprehensively improving the sealing effect. It also reduces wear and damage caused by stress concentration at the corners, extending the device's service life and reducing maintenance costs. The fit between the extension plate 10 and the groove 11 precisely positions the extrusion plates 3 within the left and right halves of the clamp 1 and clamp 2, ensuring quick alignment during installation and improving installation efficiency. During the sealing process, the extension plate 10 embeds into the groove 11, enhancing the connection strength between the extrusion plates 3. This allows the extrusion plates 3 to more stably press the asbestos rope 5 against the leaking gap in the bridge pipe 4, improving the stability of the sealing effect. Furthermore, this structure can also prevent the extrusion plates 3 from shifting or shaking during operation, ensuring long-term stable operation of the coke oven bridge pipe sealing device and reducing maintenance frequency.

[0032] The left half-hoop 1 has insert plates 102 fixedly installed on both sides; the right half-hoop 2 has slots 202 on both sides that cooperate with the insert plates 102. The extrusion plate 3 inside the left half-hoop 1 has extension plates 10 on both sides; the extrusion plate 3 inside the right half-hoop 2 has grooves 11 that cooperate with the extension plates to accommodate the asbestos rope 5, preventing compression deformation or damage to the asbestos rope 5 during installation of the left and right half-hoops 1 and 2, ensuring that the asbestos rope 5 maintains a good sealing state and effectively enhancing the sealing effect. At the same time, the first relief groove 103 and the second relief groove 203 provide a stable placement space for the asbestos rope 5, making it less prone to displacement during the sealing process, ensuring the reliability and stability of the seal, thereby improving the overall sealing performance of the coke oven bridge pipe sealing device. The left half-clamp 1 has fixed insert plates 102 on both sides, and the right half-clamp 2 has slots 202 on both sides. The two work together to provide precise positioning during installation, speed up the installation process, improve installation efficiency, and enhance the tightness of the connection between the left half-clamp 1 and the right half-clamp 2. This effectively prevents the sealing device from shifting during use, ensures the stability of the sealing effect, and provides strong support for the efficient sealing of the coke oven bridge pipe.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sealing device for a coke oven bridge pipe, comprising a left half-hoop (1) and a right half-hoop (2) arranged opposite to each other and connected by bolts, characterized in that, The longitudinal sections of the left half hoop (1) and the right half hoop (2) are both U-shaped; the left half hoop (1) and the right half hoop (2) are both equipped with extrusion plates (3) through radial moving components; the inner side of the extrusion plate (3) is equipped with asbestos rope (5) that is wound around the bridge pipe (4); the left half hoop (1) and the right half hoop (2) are both fixedly equipped with connecting pipes (6); the left half hoop (1) and the extrusion plate (3) and the right half hoop (2) and the extrusion plate (3) are both filled with filler material (7) through the connecting pipes (6).

2. The coke oven bridge pipe sealing device according to claim 1, characterized in that, The connecting pipe (6) is connected to the middle of the side walls of the left half hoop (1) and the right half hoop (2).

3. The coke oven bridge pipe sealing device according to claim 2, characterized in that, The left half hoop (1) has an annular groove (101) in the middle of the inner wall of the connecting pipe (6); the right half hoop (2) has an annular groove (201) in the middle of the inner wall of the connecting pipe (6).

4. The coke oven bridge pipe sealing device according to claim 3, characterized in that, Both annular groove one (101) and annular groove two (201) have chamfers at their corners.

5. The coke oven bridge pipe sealing device according to claim 4, characterized in that, The connecting pipe (6) is arranged in an L-shape.

6. The coke oven bridge pipe sealing device according to claim 1, characterized in that, Several through holes are evenly arranged on the extrusion plate (3).

7. The coke oven bridge pipe sealing device according to claim 6, characterized in that, The radial movement assembly includes several springs (8); one end of the spring (8) is fixedly connected to the extrusion plate (3), and the other end of the spring (8) away from the extrusion plate (3) is fixedly connected to the inner wall of the left half hoop (1) or the right half hoop (2).

8. The coke oven bridge pipe sealing device according to claim 1, characterized in that, Flange plates (9) for bolt connection are provided radially on both sides of the left half hoop (1) and the right half hoop (2); insert plates (102) are fixedly provided on both sides of the left half hoop (1); slots (202) are provided on both sides of the right half hoop (2) in conjunction with the insert plates (102).

9. The coke oven bridge pipe sealing device according to claim 8, characterized in that, The left half hoop (1) has a relief groove 1 (103) on the upper and lower edges of the inner side; the right half hoop (2) has a relief groove 2 (203) on the upper and lower edges of the inner side.

10. The coke oven bridge pipe sealing device according to claim 1, characterized in that, The extrusion plate (3) inside the left half hoop (1) has extension plates (10) on both sides; the extrusion plate (3) inside the right half hoop (2) has grooves (11) in cooperation with the extension plates.

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